/* roulang page: index */
:root {
            --brand-primary: #2B6CB0;
            --brand-primary-hover: #2C5282;
            --brand-primary-light: rgba(43, 108, 176, 0.08);
            --brand-primary-border: rgba(43, 108, 176, 0.3);
            --brand-accent: #F56500;
            --brand-accent-light: #ED8936;
            --brand-dark: #1A2B4A;
            --brand-footer: #1A202C;
            --brand-bg: #F7FAFC;
            --brand-bg-alt: #EDF2F7;
            --text-heading: #1A202C;
            --text-body: #4A5568;
            --text-muted: #718096;
            --text-weak: #A0AEC0;
            --border-light: #E2E8F0;
            --border-mid: #CBD5E0;
            --shadow-sm: 0 2px 8px rgba(26, 32, 44, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 32, 44, 0.08);
            --shadow-lg: 0 8px 24px rgba(26, 32, 44, 0.10);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 5px;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --container-pad-desktop: 48px;
            --container-pad-tablet: 32px;
            --container-pad-mobile: 24px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-body);
            background-color: #ffffff;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--brand-primary-hover);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: var(--container-pad-desktop);
            padding-right: var(--container-pad-desktop);
        }

        @media (max-width: 1199px) {
            .container {
                padding-left: var(--container-pad-tablet);
                padding-right: var(--container-pad-tablet);
            }
        }
        @media (max-width: 575px) {
            .container {
                padding-left: var(--container-pad-mobile);
                padding-right: var(--container-pad-mobile);
            }
        }

        section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }
        @media (max-width: 991px) {
            section {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
        }

        .section-bg-alt {
            background-color: var(--brand-bg);
        }
        .section-bg-white {
            background-color: #ffffff;
        }
        .section-bg-deep {
            background-color: var(--brand-dark);
            color: #ffffff;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-heading);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 0.5rem;
        }

        h1 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.2;
        }
        h2 {
            font-size: 26px;
            font-weight: 700;
        }
        h3 {
            font-size: 20px;
            font-weight: 600;
        }

        @media (max-width: 767px) {
            h1 {
                font-size: 26px;
            }
            h2 {
                font-size: 22px;
            }
            h3 {
                font-size: 18px;
            }
        }
        @media (max-width: 575px) {
            h1 {
                font-size: 24px;
            }
            h2 {
                font-size: 20px;
            }
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-primary);
            background-color: var(--brand-primary-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-body);
            max-width: 680px;
            line-height: 1.8;
        }

        .btn {
            border-radius: var(--radius-btn);
            font-weight: 500;
            font-size: 15px;
            padding: 10px 20px;
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
        }
        .btn:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
        }

        .btn-primary-custom {
            background-color: var(--brand-primary);
            color: #ffffff;
            border: 1px solid var(--brand-primary);
        }
        .btn-primary-custom:hover {
            background-color: var(--brand-primary-hover);
            border-color: var(--brand-primary-hover);
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(43, 108, 176, 0.3);
        }
        .btn-primary-custom:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-outline-custom {
            background-color: transparent;
            color: var(--brand-primary);
            border: 1px solid var(--brand-primary);
        }
        .btn-outline-custom:hover {
            background-color: var(--brand-primary-light);
            color: var(--brand-primary-hover);
            border-color: var(--brand-primary);
        }

        .btn-accent {
            background-color: var(--brand-accent);
            color: #ffffff;
            border: 1px solid var(--brand-accent);
        }
        .btn-accent:hover {
            background-color: #dd4a00;
            border-color: #dd4a00;
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(245, 101, 0, 0.35);
        }

        .btn-white-outline {
            background-color: transparent;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.6);
        }
        .btn-white-outline:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: #ffffff;
            border-color: #ffffff;
        }

        .btn-lg-custom {
            font-size: 16px;
            padding: 14px 28px;
        }

        .btn-sm-custom {
            font-size: 13px;
            padding: 6px 14px;
        }

        .top-info-bar {
            background-color: var(--brand-dark);
            color: #CBD5E0;
            font-size: 12px;
            min-height: 38px;
            display: flex;
            align-items: center;
            line-height: 1.4;
        }
        .top-info-bar a {
            color: #CBD5E0;
            transition: color var(--transition-fast);
        }
        .top-info-bar a:hover {
            color: #ffffff;
            border-bottom: 1px solid #ffffff;
        }
        .top-info-bar .bar-left {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .top-info-bar .bar-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .navbar-main {
            background-color: #ffffff;
            min-height: 68px;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
            transition: box-shadow var(--transition-base);
        }
        .navbar-main.scrolled {
            box-shadow: var(--shadow-sm);
        }
        .navbar-main .navbar-brand {
            font-size: 21px;
            font-weight: 700;
            color: var(--text-heading);
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
        }
        .navbar-main .navbar-brand:hover {
            color: var(--brand-primary);
        }
        .brand-icon {
            width: 28px;
            height: 28px;
            background-color: var(--brand-primary);
            border-radius: 6px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .navbar-main .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-heading);
            padding: 8px 14px;
            position: relative;
            transition: color var(--transition-fast);
        }
        .navbar-main .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--brand-primary);
            transform: scaleX(0);
            transition: transform var(--transition-fast);
            border-radius: 2px;
        }
        .navbar-main .nav-link:hover {
            color: var(--brand-primary);
        }
        .navbar-main .nav-link:hover::after {
            transform: scaleX(1);
        }
        .navbar-main .nav-link.active {
            color: var(--brand-primary);
        }
        .navbar-main .nav-link.active::after {
            transform: scaleX(1);
        }
        .navbar-main .navbar-toggler {
            border: 1px solid var(--border-mid);
            border-radius: 6px;
            padding: 6px 10px;
            color: var(--text-heading);
            background: transparent;
        }
        .navbar-main .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.2);
            outline: none;
        }
        .navbar-main .navbar-toggler-icon {
            background-image: none;
            width: 20px;
            height: 20px;
            position: relative;
            display: inline-block;
        }
        .navbar-main .navbar-toggler-icon::before,
        .navbar-main .navbar-toggler-icon::after {
            content: '';
            position: absolute;
            left: 0;
            width: 20px;
            height: 2px;
            background-color: var(--text-heading);
            border-radius: 2px;
            transition: transform var(--transition-fast);
            top: 5px;
        }
        .navbar-main .navbar-toggler-icon::after {
            top: auto;
            bottom: 5px;
        }

        .hero-section {
            background-color: var(--brand-bg);
            padding-top: 60px;
            padding-bottom: 60px;
            position: relative;
            overflow: hidden;
        }
        .hero-section .hero-bg-img {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }
        .hero-section .container {
            position: relative;
            z-index: 1;
        }
        .hero-content {
            max-width: 720px;
            text-align: left;
        }
        .hero-content h1 {
            font-size: 40px;
            font-weight: 800;
            color: var(--text-heading);
            margin-bottom: 16px;
        }
        .hero-content .hero-sub {
            font-size: 17px;
            line-height: 1.7;
            color: var(--text-body);
            margin-bottom: 24px;
        }
        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }
        .hero-metrics {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }
        .hero-metric-item .metric-num {
            font-size: 26px;
            font-weight: 700;
            color: var(--brand-primary);
            line-height: 1.2;
        }
        .hero-metric-item .metric-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        .features-grid-21 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .features-grid-21 .feature-card-wide {
            grid-column: span 1;
            background: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }
        .features-grid-21 .feature-card-tall {
            grid-column: span 1;
            grid-row: span 2;
            background: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .features-grid-21 .feature-card-wide:hover,
        .features-grid-21 .feature-card-tall:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            border-color: var(--brand-primary-border);
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background-color: var(--brand-primary-light);
            color: var(--brand-primary);
            font-size: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .feature-card-wide h3,
        .feature-card-tall h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-heading);
        }
        .feature-card-wide p,
        .feature-card-tall p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .brand-intro-block {
            background-color: var(--brand-bg-alt);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            border: 1px solid var(--border-light);
        }
        .brand-intro-block h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-heading);
        }
        .brand-intro-block p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-body);
            margin-bottom: 12px;
        }

        .scenario-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
            padding: 24px 0;
        }
        .scenario-row:nth-child(even) .scenario-img-wrap {
            order: 2;
        }
        .scenario-row:nth-child(even) .scenario-text {
            order: 1;
        }
        .scenario-text h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .scenario-text p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .scenario-img-wrap {
            border-radius: var(--radius-card);
            overflow: hidden;
            background-color: var(--brand-bg);
            box-shadow: var(--shadow-sm);
        }
        .scenario-img-wrap img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .case-card {
            background: #ffffff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition-base);
            height: 100%;
        }
        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--brand-primary-border);
        }
        .case-card .case-img {
            height: 160px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .case-card .case-body {
            padding: 20px 24px;
        }
        .case-card .case-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .case-card .case-metric {
            font-size: 24px;
            font-weight: 700;
            color: var(--brand-primary);
            margin-bottom: 4px;
        }
        .case-card .case-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .price-card {
            background: #ffffff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            padding: 32px 28px;
            text-align: center;
            transition: all var(--transition-base);
            height: 100%;
            position: relative;
        }
        .price-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }
        .price-card.featured {
            border: 2px solid var(--brand-primary);
            background-color: var(--brand-primary-light);
        }
        .price-card .badge-featured {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--brand-accent);
            color: #ffffff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            white-space: nowrap;
        }
        .price-card .price-name {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .price-card .price-amount {
            font-size: 36px;
            font-weight: 800;
            color: var(--brand-primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .price-card .price-amount small {
            font-size: 14px;
            font-weight: 400;
            color: var(--text-muted);
        }
        .price-card .price-features {
            list-style: none;
            padding: 0;
            margin: 20px 0 24px;
            text-align: left;
        }
        .price-card .price-features li {
            font-size: 14px;
            color: var(--text-body);
            padding: 6px 0;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .price-card .price-features li:last-child {
            border-bottom: none;
        }
        .price-card .price-features li i {
            color: var(--brand-primary);
            font-size: 14px;
        }

        .guarantee-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .guarantee-item {
            text-align: center;
            padding: 20px 16px;
            background: #ffffff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .guarantee-item i {
            font-size: 28px;
            color: var(--brand-primary);
            margin-bottom: 8px;
            display: block;
        }
        .guarantee-item .guarantee-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 4px;
        }
        .guarantee-item .guarantee-desc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .brand-story-band {
            background-color: var(--brand-dark);
            color: #ffffff;
            border-radius: var(--radius-card);
            padding: 48px 40px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .brand-story-band h3 {
            font-size: 24px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
        }
        .brand-story-band p {
            font-size: 15px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 12px;
        }
        .brand-story-band .story-img {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .brand-story-band .story-img img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .news-list-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            transition: background-color var(--transition-fast);
        }
        .news-list-item:last-child {
            border-bottom: none;
        }
        .news-list-item:hover {
            background-color: var(--brand-bg);
        }
        .news-date-block {
            flex-shrink: 0;
            text-align: center;
            background-color: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: 8px;
            padding: 8px 12px;
            min-width: 64px;
            align-self: flex-start;
        }
        .news-date-block .news-day {
            font-size: 20px;
            font-weight: 700;
            color: var(--brand-primary);
            line-height: 1.2;
        }
        .news-date-block .news-month {
            font-size: 12px;
            color: var(--text-muted);
        }
        .news-content h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .news-content h3 a {
            color: var(--text-heading);
        }
        .news-content h3 a:hover {
            color: var(--brand-primary);
        }
        .news-content p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.65;
            margin-bottom: 8px;
        }
        .news-content .btn-read-more {
            font-size: 13px;
            font-weight: 500;
            color: var(--brand-primary);
            border: 1px solid var(--brand-primary);
            border-radius: 6px;
            padding: 4px 12px;
            transition: all var(--transition-fast);
            display: inline-block;
        }
        .news-content .btn-read-more:hover {
            background-color: var(--brand-primary);
            color: #ffffff;
        }

        .deep-content-block {
            background: #ffffff;
            border-radius: var(--radius-card);
            padding: 32px 36px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            margin-bottom: 24px;
        }
        .deep-content-block h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-heading);
        }
        .deep-content-block p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-body);
            margin-bottom: 12px;
        }
        .deep-content-block p:last-child {
            margin-bottom: 0;
        }

        .accordion-custom .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: 8px;
            margin-bottom: 8px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .accordion-custom .accordion-item:last-child {
            margin-bottom: 0;
        }
        .accordion-custom .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            background-color: #ffffff;
            padding: 16px 20px;
            border: none;
            box-shadow: none;
            border-radius: 8px;
            transition: all var(--transition-base);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background-color: var(--brand-bg);
            color: var(--brand-primary);
            box-shadow: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.2);
            border-color: var(--brand-primary);
        }
        .accordion-custom .accordion-button::after {
            transition: transform var(--transition-base);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }
        .accordion-custom .accordion-body {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            padding: 16px 20px;
            background-color: var(--brand-bg);
        }

        .cta-deep-section {
            background-color: var(--brand-dark);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            color: #ffffff;
        }
        .cta-deep-section h2 {
            color: #ffffff;
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cta-deep-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            line-height: 1.7;
            margin-bottom: 24px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .footer-main {
            background-color: var(--brand-footer);
            color: var(--text-weak);
            padding: 48px 0 24px;
        }
        .footer-main .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-main .footer-brand:hover {
            color: #ffffff;
        }
        .footer-main p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.7;
        }
        .footer-main .footer-heading {
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
        }
        .footer-main ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-main ul li {
            margin-bottom: 8px;
        }
        .footer-main ul li a {
            font-size: 13px;
            color: var(--text-weak);
            transition: color var(--transition-fast);
        }
        .footer-main ul li a:hover {
            color: #ffffff;
        }
        .footer-main .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 32px;
            padding-top: 16px;
            font-size: 12px;
            color: var(--text-weak);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .footer-main .footer-divider a {
            color: var(--text-weak);
            font-size: 12px;
        }
        .footer-main .footer-divider a:hover {
            color: #ffffff;
        }

        .back-to-top {
            position: fixed;
            bottom: 24px;
            right: 24px;
            width: 44px;
            height: 44px;
            background-color: var(--brand-primary);
            color: #ffffff;
            border: none;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: var(--shadow-md);
            cursor: pointer;
            z-index: 999;
            transition: all var(--transition-base);
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
        }
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background-color: var(--brand-primary-hover);
            color: #ffffff;
            transform: translateY(-2px);
        }

        @media (max-width: 991px) {
            .features-grid-21 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .features-grid-21 .feature-card-wide,
            .features-grid-21 .feature-card-tall {
                grid-column: span 1;
                grid-row: auto;
            }
            .scenario-row {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .scenario-row:nth-child(even) .scenario-img-wrap {
                order: 0;
            }
            .scenario-row:nth-child(even) .scenario-text {
                order: 0;
            }
            .guarantee-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .brand-story-band {
                grid-template-columns: 1fr;
                padding: 32px 24px;
            }
            .brand-story-band .story-img img {
                height: 160px;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .hero-metrics {
                gap: 16px;
            }
        }

        @media (max-width: 767px) {
            .hero-content h1 {
                font-size: 26px;
            }
            .hero-content .hero-sub {
                font-size: 15px;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-cta-group .btn {
                width: 100%;
            }
            .guarantee-bar {
                grid-template-columns: 1fr 1fr;
            }
            .footer-main .footer-divider {
                flex-direction: column;
                text-align: center;
            }
            .price-card {
                margin-bottom: 16px;
            }
            .deep-content-block {
                padding: 24px 20px;
            }
        }

        @media (max-width: 575px) {
            .top-info-bar {
                min-height: 32px;
                font-size: 11px;
            }
            .top-info-bar .bar-right .hide-mobile {
                display: none;
            }
            .navbar-main .navbar-brand {
                font-size: 19px;
            }
            .hero-section {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .hero-metrics {
                flex-direction: column;
                gap: 8px;
            }
            .guarantee-bar {
                grid-template-columns: 1fr;
            }
            .brand-intro-block {
                padding: 24px 20px;
            }
            .news-list-item {
                flex-direction: column;
                gap: 8px;
                padding: 16px 0;
            }
            .news-date-block {
                flex-direction: row;
                display: flex;
                gap: 6px;
                align-items: baseline;
                padding: 6px 10px;
                min-width: auto;
            }
            .cta-deep-section {
                padding: 32px 20px;
            }
            .cta-deep-section h2 {
                font-size: 20px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

/* roulang page: category2 */
:root {
            --brand-primary: #2B6CB0;
            --brand-primary-hover: #2C5282;
            --brand-primary-light: rgba(43, 108, 176, 0.08);
            --brand-primary-border: rgba(43, 108, 176, 0.3);
            --brand-accent: #F56500;
            --brand-accent-light: #ED8936;
            --brand-dark: #1A2B4A;
            --brand-footer: #1A202C;
            --brand-bg: #F7FAFC;
            --brand-bg-alt: #EDF2F7;
            --text-heading: #1A202C;
            --text-body: #4A5568;
            --text-muted: #718096;
            --text-weak: #A0AEC0;
            --border-light: #E2E8F0;
            --border-mid: #CBD5E0;
            --shadow-sm: 0 2px 8px rgba(26, 32, 44, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 32, 44, 0.08);
            --shadow-lg: 0 8px 24px rgba(26, 32, 44, 0.10);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 5px;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --container-pad-desktop: 48px;
            --container-pad-tablet: 32px;
            --container-pad-mobile: 24px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-body);
            background-color: #ffffff;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--brand-primary-hover);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-heading);
            font-weight: 700;
            margin-top: 0;
        }

        h1 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.25;
        }

        h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        h3 {
            font-size: 19px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 12px;
        }

        p {
            margin-bottom: 16px;
        }

        .container {
            max-width: 1200px;
            padding-left: var(--container-pad-desktop);
            padding-right: var(--container-pad-desktop);
            margin: 0 auto;
        }

        section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        .section-bg-alt {
            background-color: var(--brand-bg);
        }

        .section-bg-white {
            background-color: #ffffff;
        }

        .section-bg-deep {
            background-color: var(--brand-dark);
            color: #ffffff;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-primary);
            background-color: var(--brand-primary-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-body);
            max-width: 680px;
            line-height: 1.8;
        }

        .btn {
            border-radius: var(--radius-btn);
            font-weight: 500;
            font-size: 15px;
            padding: 10px 20px;
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
        }

        .btn:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
        }

        .btn-primary-custom {
            background-color: var(--brand-primary);
            color: #ffffff;
            border: 1px solid var(--brand-primary);
        }

        .btn-primary-custom:hover {
            background-color: var(--brand-primary-hover);
            border-color: var(--brand-primary-hover);
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(43, 108, 176, 0.3);
        }

        .btn-primary-custom:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-outline-custom {
            background-color: transparent;
            color: var(--brand-primary);
            border: 1px solid var(--brand-primary);
        }

        .btn-outline-custom:hover {
            background-color: var(--brand-primary-light);
            color: var(--brand-primary-hover);
            border-color: var(--brand-primary);
        }

        .btn-accent {
            background-color: var(--brand-accent);
            color: #ffffff;
            border: 1px solid var(--brand-accent);
        }

        .btn-accent:hover {
            background-color: #dd4a00;
            border-color: #dd4a00;
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(245, 101, 0, 0.35);
        }

        .btn-white-outline {
            background-color: transparent;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.6);
        }

        .btn-white-outline:hover {
            background-color: rgba(255, 255, 255, 0.15);
            border-color: #ffffff;
            color: #ffffff;
        }

        .btn-sm-custom {
            padding: 8px 16px;
            font-size: 14px;
        }

        .btn-lg-custom {
            padding: 14px 28px;
            font-size: 17px;
        }

        /* 顶部信息条 */
        .top-info-bar {
            background-color: var(--brand-dark);
            color: #CBD5E0;
            font-size: 12px;
            height: 38px;
            display: flex;
            align-items: center;
            padding: 0;
        }

        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .top-info-bar a {
            color: #CBD5E0;
            transition: border-color var(--transition-fast), color var(--transition-fast);
            border-bottom: 1px solid transparent;
        }

        .top-info-bar a:hover {
            color: #ffffff;
            border-bottom: 1px solid #ffffff;
        }

        /* 主导航 */
        .navbar-main {
            background-color: #ffffff;
            min-height: 68px;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            transition: box-shadow var(--transition-base);
        }

        .navbar-main.scrolled {
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
        }

        .navbar-main .navbar-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 21px;
            font-weight: 700;
            color: var(--text-heading);
            padding: 0;
        }

        .navbar-main .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 6px;
            background-color: var(--brand-primary);
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .navbar-main .navbar-brand:hover {
            color: var(--brand-primary);
        }

        .navbar-main .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-heading);
            padding: 8px 12px;
            position: relative;
            transition: color var(--transition-fast);
        }

        .navbar-main .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 12px;
            right: 12px;
            height: 2px;
            background-color: var(--brand-primary);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform var(--transition-fast);
        }

        .navbar-main .nav-link:hover {
            color: var(--brand-primary);
        }

        .navbar-main .nav-link:hover::after {
            transform: scaleX(1);
        }

        .navbar-main .nav-link.active {
            color: var(--brand-primary);
        }

        .navbar-main .nav-link.active::after {
            transform: scaleX(1);
        }

        .navbar-toggler {
            border: 1px solid var(--border-mid);
            border-radius: 6px;
            padding: 6px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.2);
            border-color: var(--brand-primary);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%232B6CB0' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* 页面标题区 */
        .page-header {
            background-color: var(--brand-bg);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border-light);
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb-custom a {
            color: var(--brand-primary);
        }

        .breadcrumb-custom a:hover {
            color: var(--brand-primary-hover);
            text-decoration: underline;
        }

        .breadcrumb-custom .sep {
            color: var(--text-weak);
        }

        /* 筛选栏 */
        .filter-bar {
            background-color: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            margin-bottom: 36px;
        }

        .filter-bar .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-heading);
            margin-right: 6px;
            white-space: nowrap;
        }

        .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid var(--border-mid);
            background-color: #ffffff;
            color: var(--text-body);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .filter-chip:hover {
            border-color: var(--brand-primary);
            color: var(--brand-primary);
            background-color: var(--brand-primary-light);
        }

        .filter-chip.active {
            background-color: var(--brand-primary);
            border-color: var(--brand-primary);
            color: #ffffff;
        }

        .filter-chip:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
        }

        /* 卡片网格 */
        .data-card-grid {
            margin-bottom: 24px;
        }

        .data-card {
            background-color: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .data-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .data-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--brand-bg-alt);
        }

        .data-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }

        .data-card:hover .card-img-wrap img {
            transform: scale(1.03);
        }

        .data-card .card-img-wrap .card-tag-top {
            position: absolute;
            top: 12px;
            left: 12px;
            background-color: rgba(26, 32, 44, 0.75);
            color: #ffffff;
            font-size: 12px;
            padding: 4px 10px;
            border-radius: var(--radius-badge);
            font-weight: 500;
        }

        .data-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .data-card .card-category-label {
            font-size: 12px;
            font-weight: 600;
            color: var(--brand-primary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }

        .data-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
            line-height: 1.4;
            transition: color var(--transition-fast);
        }

        .data-card:hover .card-title {
            color: var(--brand-primary);
        }

        .data-card .card-desc {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }

        .data-card .card-stats-row {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
            margin-top: 4px;
        }

        .data-card .card-stat-item {
            display: flex;
            flex-direction: column;
        }

        .data-card .card-stat-item .stat-value {
            font-size: 16px;
            font-weight: 700;
            color: var(--brand-primary);
            line-height: 1.2;
        }

        .data-card .card-stat-item .stat-label {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 数据统计条 */
        .stats-banner {
            background-color: var(--brand-dark);
            border-radius: var(--radius-card);
            padding: 32px 36px;
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            justify-content: space-between;
            align-items: center;
        }

        .stats-banner .stat-block {
            text-align: center;
            min-width: 120px;
        }

        .stats-banner .stat-block .stat-number {
            font-size: 30px;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.2;
        }

        .stats-banner .stat-block .stat-text {
            font-size: 13px;
            color: #CBD5E0;
            margin-top: 4px;
        }

        /* 深度内容区 */
        .deep-content {
            max-width: 860px;
            margin: 0 auto;
        }

        .deep-content h3 {
            margin-top: 24px;
        }

        .deep-content p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 18px;
        }

        .deep-content .content-quote {
            border-left: 3px solid var(--brand-primary);
            padding: 16px 20px;
            background-color: var(--brand-primary-light);
            border-radius: 0 8px 8px 0;
            margin: 20px 0;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
        }

        /* FAQ */
        .accordion-custom .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card) !important;
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition-base);
        }

        .accordion-custom .accordion-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .accordion-custom .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            background-color: #ffffff;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            transition: all var(--transition-base);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--brand-primary);
            background-color: var(--brand-bg);
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.15);
            border-color: var(--brand-primary);
        }

        .accordion-custom .accordion-button::after {
            transition: transform var(--transition-fast);
        }

        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }

        .accordion-custom .accordion-body {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-body);
            padding: 18px 22px 22px;
            background-color: #ffffff;
        }

        /* CTA */
        .cta-section {
            background-color: var(--brand-dark);
            border-radius: 16px;
            padding: 56px 40px;
            text-align: center;
            color: #ffffff;
        }

        .cta-section h2 {
            color: #ffffff;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: #CBD5E0;
            font-size: 16px;
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn {
            background-color: #ffffff;
            color: var(--brand-dark);
            border: 1px solid #ffffff;
            font-weight: 600;
        }

        .cta-section .btn:hover {
            background-color: #E2E8F0;
            border-color: #E2E8F0;
            color: var(--brand-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }

        /* 页脚 */
        .footer-main {
            background-color: var(--brand-footer);
            color: #A0AEC0;
            padding: 56px 0 24px;
            margin-top: 0;
        }

        .footer-main .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
        }

        .footer-main .footer-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            border-radius: 6px;
            background-color: var(--brand-primary);
            color: #ffffff;
            font-size: 15px;
            font-weight: 700;
        }

        .footer-main .footer-brand:hover {
            color: #ffffff;
        }

        .footer-main p {
            font-size: 13px;
            line-height: 1.7;
            color: #A0AEC0;
        }

        .footer-main .footer-heading {
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
        }

        .footer-main ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-main ul li {
            margin-bottom: 8px;
        }

        .footer-main ul li a {
            color: #A0AEC0;
            font-size: 13px;
            transition: color var(--transition-fast);
        }

        .footer-main ul li a:hover {
            color: #ffffff;
        }

        .footer-main .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            margin-top: 40px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: #A0AEC0;
        }

        .footer-main .footer-divider a {
            color: #A0AEC0;
        }

        .footer-main .footer-divider a:hover {
            color: #ffffff;
        }

        /* 响应式 */
        @media (max-width: 1199px) {
            .container {
                padding-left: var(--container-pad-tablet);
                padding-right: var(--container-pad-tablet);
            }
            section {
                padding-top: 64px;
                padding-bottom: 64px;
            }
            h1 {
                font-size: 30px;
            }
        }

        @media (max-width: 991px) {
            .navbar-main .navbar-collapse {
                background-color: #ffffff;
                border-radius: 0 0 12px 12px;
                padding: 12px 16px;
                box-shadow: var(--shadow-md);
                margin-top: 8px;
            }
            .navbar-main .nav-link {
                padding: 10px 12px;
                border-left: 3px solid transparent;
            }
            .navbar-main .nav-link.active {
                border-left: 3px solid var(--brand-primary);
            }
            .navbar-main .nav-link::after {
                display: none;
            }
            .stats-banner {
                padding: 24px;
                gap: 20px;
            }
            .cta-section {
                padding: 40px 24px;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding-left: var(--container-pad-mobile);
                padding-right: var(--container-pad-mobile);
            }
            section {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
            h1 {
                font-size: 26px;
            }
            h2 {
                font-size: 22px;
            }
            .top-info-bar {
                height: 32px;
                font-size: 11px;
            }
            .filter-bar {
                padding: 12px 14px;
            }
            .data-card .card-body {
                padding: 16px 18px 18px;
            }
            .stats-banner {
                flex-direction: column;
                gap: 16px;
                padding: 20px;
            }
            .stats-banner .stat-block .stat-number {
                font-size: 26px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section h2 {
                font-size: 22px;
            }
            .footer-main .footer-divider {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }

        @media (max-width: 575px) {
            .top-info-bar .top-right-secondary {
                display: none;
            }
            .btn-lg-custom {
                padding: 10px 20px;
                font-size: 15px;
            }
            h1 {
                font-size: 24px;
            }
            .breadcrumb-custom {
                font-size: 12px;
            }
            .data-card .card-title {
                font-size: 16px;
            }
            .filter-chip {
                padding: 5px 12px;
                font-size: 12px;
            }
        }

/* roulang page: category1 */
:root {
            --brand-primary: #2B6CB0;
            --brand-primary-hover: #2C5282;
            --brand-primary-light: rgba(43, 108, 176, 0.08);
            --brand-primary-border: rgba(43, 108, 176, 0.3);
            --brand-accent: #F56500;
            --brand-accent-light: #ED8936;
            --brand-dark: #1A2B4A;
            --brand-footer: #1A202C;
            --brand-bg: #F7FAFC;
            --brand-bg-alt: #EDF2F7;
            --text-heading: #1A202C;
            --text-body: #4A5568;
            --text-muted: #718096;
            --text-weak: #A0AEC0;
            --border-light: #E2E8F0;
            --border-mid: #CBD5E0;
            --shadow-sm: 0 2px 8px rgba(26, 32, 44, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 32, 44, 0.08);
            --shadow-lg: 0 8px 24px rgba(26, 32, 44, 0.10);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 5px;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacing-section: 72px;
            --spacing-section-mobile: 48px;
            --container-pad-desktop: 48px;
            --container-pad-tablet: 32px;
            --container-pad-mobile: 24px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-body);
            background-color: #ffffff;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--brand-primary-hover);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: var(--container-pad-desktop);
            padding-right: var(--container-pad-desktop);
        }

        @media (max-width: 1199.98px) {
            .container {
                padding-left: var(--container-pad-tablet);
                padding-right: var(--container-pad-tablet);
            }
        }
        @media (max-width: 575.98px) {
            .container {
                padding-left: var(--container-pad-mobile);
                padding-right: var(--container-pad-mobile);
            }
        }

        section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }
        @media (max-width: 991.98px) {
            section {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
        }

        .section-bg-alt {
            background-color: var(--brand-bg);
        }
        .section-bg-white {
            background-color: #ffffff;
        }
        .section-bg-deep {
            background-color: var(--brand-dark);
            color: #ffffff;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-primary);
            background-color: var(--brand-primary-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-body);
            max-width: 680px;
            line-height: 1.8;
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.3;
            margin-bottom: 16px;
        }
        @media (min-width: 992px) {
            .section-title {
                font-size: 30px;
            }
        }

        .btn {
            border-radius: var(--radius-btn);
            font-weight: 500;
            font-size: 15px;
            padding: 10px 20px;
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
        }
        .btn:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background-color: var(--brand-primary);
            color: #ffffff;
            border: 1px solid var(--brand-primary);
        }
        .btn-primary-custom:hover {
            background-color: var(--brand-primary-hover);
            border-color: var(--brand-primary-hover);
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(43, 108, 176, 0.3);
        }
        .btn-primary-custom:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-outline-custom {
            background-color: transparent;
            color: var(--brand-primary);
            border: 1px solid var(--brand-primary);
        }
        .btn-outline-custom:hover {
            background-color: var(--brand-primary-light);
            color: var(--brand-primary-hover);
            border-color: var(--brand-primary);
        }
        .btn-accent {
            background-color: var(--brand-accent);
            color: #ffffff;
            border: 1px solid var(--brand-accent);
        }
        .btn-accent:hover {
            background-color: #dd4a00;
            border-color: #dd4a00;
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(245, 101, 0, 0.35);
        }
        .btn-white-outline {
            background-color: transparent;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.5);
        }
        .btn-white-outline:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: #ffffff;
            border-color: #ffffff;
        }
        .btn-sm-custom {
            padding: 8px 16px;
            font-size: 14px;
        }
        .btn-lg-custom {
            padding: 14px 28px;
            font-size: 16px;
            border-radius: var(--radius-btn);
        }

        /* Top info bar */
        .top-info-bar {
            background-color: var(--brand-dark);
            color: #CBD5E0;
            font-size: 12px;
            height: 38px;
            display: flex;
            align-items: center;
            padding: 0;
        }
        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-info-bar a {
            color: #CBD5E0;
            font-size: 12px;
            transition: color var(--transition-fast);
        }
        .top-info-bar a:hover {
            color: #ffffff;
            text-decoration: underline;
        }
        .top-info-bar .left-text {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .top-info-bar .right-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        @media (max-width: 575.98px) {
            .top-info-bar {
                height: 32px;
            }
            .top-info-bar .right-actions span {
                display: none;
            }
        }

        /* Main navbar */
        .navbar-main {
            background-color: #ffffff;
            min-height: 68px;
            padding-top: 8px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1030;
            transition: box-shadow var(--transition-base);
        }
        .navbar-main.scrolled {
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
        }
        .navbar-main .navbar-brand {
            font-weight: 700;
            font-size: 21px;
            color: var(--text-heading);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-main .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background-color: var(--brand-primary);
            color: #ffffff;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .navbar-main .navbar-brand:hover {
            color: var(--brand-primary);
        }
        .navbar-main .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-heading);
            padding: 8px 12px;
            position: relative;
            transition: color var(--transition-fast);
        }
        .navbar-main .nav-link::after {
            content: '';
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: 2px;
            height: 2px;
            background-color: var(--brand-primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-fast);
        }
        .navbar-main .nav-link:hover {
            color: var(--brand-primary);
        }
        .navbar-main .nav-link:hover::after,
        .navbar-main .nav-link.active::after {
            transform: scaleX(1);
        }
        .navbar-main .nav-link.active {
            color: var(--brand-primary);
        }
        .navbar-toggler {
            border: 1px solid var(--border-mid);
            border-radius: 6px;
            padding: 6px 10px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--brand-primary);
        }
        @media (max-width: 991.98px) {
            .navbar-main .navbar-collapse {
                background-color: #ffffff;
                padding: 16px 0;
                border-top: 1px solid var(--border-light);
                margin-top: 8px;
            }
            .navbar-main .nav-link {
                padding: 12px 16px;
                display: block;
            }
            .navbar-main .nav-link.active {
                border-left: 3px solid var(--brand-primary);
                background-color: var(--brand-primary-light);
            }
            .navbar-main .nav-link::after {
                display: none;
            }
        }

        /* Page header */
        .page-header {
            background-color: var(--brand-bg);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border-light);
        }
        .page-header .breadcrumb-custom {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .page-header .breadcrumb-custom a {
            color: var(--text-muted);
        }
        .page-header .breadcrumb-custom a:hover {
            color: var(--brand-primary);
        }
        .page-header .breadcrumb-custom .separator {
            margin: 0 8px;
            color: var(--text-weak);
        }
        .page-header .breadcrumb-custom .current {
            color: var(--brand-primary);
            font-weight: 500;
        }
        .page-header h1 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-heading);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        @media (min-width: 992px) {
            .page-header h1 {
                font-size: 36px;
            }
        }
        .page-header .header-desc {
            font-size: 15px;
            color: var(--text-body);
            max-width: 600px;
            line-height: 1.7;
        }

        /* News list items */
        .news-list-section {
            padding-top: 48px;
            padding-bottom: 48px;
        }
        .news-list-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            transition: background-color var(--transition-fast);
            border-radius: 0;
        }
        .news-list-item:hover {
            background-color: var(--brand-bg);
            padding-left: 16px;
            padding-right: 16px;
            margin-left: -16px;
            margin-right: -16px;
            border-radius: 8px;
        }
        .news-date-block {
            flex-shrink: 0;
            width: 64px;
            height: 64px;
            background-color: var(--brand-bg);
            border-radius: 8px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            border: 1px solid var(--border-light);
        }
        .news-date-block .day {
            font-size: 20px;
            font-weight: 700;
            color: var(--brand-primary);
            line-height: 1.2;
        }
        .news-date-block .month {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.3;
        }
        .news-item-content {
            flex: 1;
            min-width: 0;
        }
        .news-item-content .news-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.4;
            margin-bottom: 6px;
            display: block;
            transition: color var(--transition-fast);
        }
        .news-item-content .news-title:hover {
            color: var(--brand-primary);
        }
        @media (min-width: 768px) {
            .news-item-content .news-title {
                font-size: 18px;
            }
        }
        .news-item-content .news-excerpt {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item-content .read-more-link {
            font-size: 14px;
            color: var(--brand-primary);
            font-weight: 500;
            transition: color var(--transition-fast);
        }
        .news-item-content .read-more-link:hover {
            color: var(--brand-primary-hover);
        }
        .news-item-content .read-more-link i {
            font-size: 12px;
            margin-left: 4px;
            transition: transform var(--transition-fast);
        }
        .news-item-content .read-more-link:hover i {
            transform: translateX(3px);
        }
        .news-thumb {
            flex-shrink: 0;
            width: 120px;
            height: 80px;
            border-radius: 8px;
            overflow: hidden;
            background-color: var(--brand-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--text-weak);
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        @media (max-width: 575.98px) {
            .news-list-item {
                flex-direction: column;
                gap: 12px;
            }
            .news-date-block {
                flex-direction: row;
                width: auto;
                height: auto;
                padding: 6px 14px;
                gap: 6px;
                border-radius: 20px;
            }
            .news-date-block .day {
                font-size: 14px;
            }
            .news-date-block .month {
                font-size: 12px;
            }
            .news-thumb {
                width: 100%;
                height: 160px;
            }
        }

        /* Sidebar */
        .sidebar-card {
            background-color: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 24px;
        }
        .sidebar-card .sidebar-heading {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--brand-primary);
            display: inline-block;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud .tag-badge {
            display: inline-block;
            font-size: 13px;
            color: var(--text-body);
            background-color: var(--brand-bg);
            padding: 5px 12px;
            border-radius: 20px;
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .tag-cloud .tag-badge:hover {
            background-color: var(--brand-primary);
            color: #ffffff;
            border-color: var(--brand-primary);
        }
        .recent-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .recent-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 14px;
        }
        .recent-list li:last-child {
            border-bottom: none;
        }
        .recent-list li a {
            color: var(--text-body);
            transition: color var(--transition-fast);
            display: block;
            line-height: 1.5;
        }
        .recent-list li a:hover {
            color: var(--brand-primary);
        }
        .recent-list li .recent-date {
            font-size: 12px;
            color: var(--text-weak);
            display: block;
            margin-top: 2px;
        }
        .sidebar-cta {
            background-color: var(--brand-dark);
            border-radius: var(--radius-card);
            padding: 24px;
            color: #ffffff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .sidebar-cta::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 120px;
            height: 120px;
            background: rgba(43, 108, 176, 0.3);
            border-radius: 50%;
        }
        .sidebar-cta .cta-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }
        .sidebar-cta .cta-text {
            font-size: 13px;
            color: #CBD5E0;
            line-height: 1.6;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .sidebar-cta .btn {
            position: relative;
            z-index: 1;
        }

        /* Section: hot topics */
        .hot-topics {
            background-color: var(--brand-bg);
        }
        .topic-card {
            background-color: #ffffff;
            border-radius: var(--radius-card);
            padding: 20px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            height: 100%;
            display: block;
            color: inherit;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--brand-primary-border);
            color: inherit;
        }
        .topic-card .topic-icon {
            font-size: 28px;
            color: var(--brand-primary);
            margin-bottom: 10px;
            display: block;
        }
        .topic-card .topic-name {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }
        .topic-card .topic-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Deep content */
        .deep-content {
            background-color: #ffffff;
        }
        .deep-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 12px;
        }
        @media (min-width: 768px) {
            .deep-content h3 {
                font-size: 22px;
            }
        }
        .deep-content p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        /* CTA section */
        .cta-section {
            background-color: var(--brand-dark);
            text-align: center;
            padding-top: 64px;
            padding-bottom: 64px;
        }
        .cta-section .cta-headline {
            font-size: 24px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }
        @media (min-width: 768px) {
            .cta-section .cta-headline {
                font-size: 30px;
            }
        }
        .cta-section .cta-sub {
            font-size: 15px;
            color: #CBD5E0;
            margin-bottom: 24px;
            line-height: 1.7;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        /* FAQ */
        .faq-section {
            background-color: var(--brand-bg);
        }
        .accordion-custom .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: 8px !important;
            margin-bottom: 12px;
            overflow: hidden;
            background-color: #ffffff;
            transition: box-shadow var(--transition-base);
        }
        .accordion-custom .accordion-item:last-child {
            margin-bottom: 0;
        }
        .accordion-custom .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            padding: 16px 20px;
            background-color: #ffffff;
            border: none;
            box-shadow: none;
            border-radius: 8px !important;
            transition: color var(--transition-fast), background-color var(--transition-fast);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--brand-primary);
            background-color: var(--brand-bg);
            box-shadow: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.15);
            border-color: var(--brand-primary-border);
        }
        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '\F282';
            font-family: 'bootstrap-icons';
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition-base), color var(--transition-fast);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--brand-primary);
        }
        .accordion-custom .accordion-body {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            padding: 0 20px 20px 20px;
            background-color: var(--brand-bg);
            border-radius: 0 0 8px 8px;
        }
        .accordion-custom .accordion-item:has(.accordion-button:not(.collapsed)) {
            box-shadow: var(--shadow-md);
            border-color: var(--brand-primary-border);
        }

        /* Footer */
        .footer-main {
            background-color: var(--brand-footer);
            padding: 56px 0 0;
            color: #A0AEC0;
        }
        .footer-main .footer-brand {
            font-weight: 700;
            font-size: 20px;
            color: #ffffff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-main .footer-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background-color: var(--brand-primary);
            color: #ffffff;
            border-radius: 7px;
            font-size: 15px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .footer-main .footer-brand:hover {
            color: #ffffff;
        }
        .footer-main p {
            font-size: 13px;
            color: #A0AEC0;
            line-height: 1.7;
        }
        .footer-main .footer-heading {
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
        }
        .footer-main ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-main ul li {
            margin-bottom: 8px;
        }
        .footer-main ul li a {
            font-size: 13px;
            color: #A0AEC0;
            transition: color var(--transition-fast);
        }
        .footer-main ul li a:hover {
            color: #ffffff;
        }
        .footer-main .footer-divider {
            margin-top: 40px;
            padding: 16px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: #718096;
        }
        .footer-main .footer-divider a {
            color: #718096;
            font-size: 12px;
        }
        .footer-main .footer-divider a:hover {
            color: #ffffff;
        }
        @media (max-width: 767.98px) {
            .footer-main {
                padding-top: 40px;
            }
            .footer-main .footer-divider {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        /* Responsive fine-tuning */
        @media (max-width: 575.98px) {
            section {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .section-title {
                font-size: 22px;
            }
            .page-header h1 {
                font-size: 26px;
            }
            .news-item-content .news-title {
                font-size: 15px;
            }
            .sidebar-card {
                padding: 16px;
            }
        }

/* roulang page: category3 */
:root {
        --brand-primary: #2B6CB0;
        --brand-primary-hover: #2C5282;
        --brand-primary-light: rgba(43, 108, 176, 0.08);
        --brand-primary-border: rgba(43, 108, 176, 0.3);
        --brand-accent: #F56500;
        --brand-accent-light: #ED8936;
        --brand-dark: #1A2B4A;
        --brand-footer: #1A202C;
        --brand-bg: #F7FAFC;
        --brand-bg-alt: #EDF2F7;
        --text-heading: #1A202C;
        --text-body: #4A5568;
        --text-muted: #718096;
        --text-weak: #A0AEC0;
        --border-light: #E2E8F0;
        --border-mid: #CBD5E0;
        --shadow-sm: 0 2px 8px rgba(26, 32, 44, 0.06);
        --shadow-md: 0 4px 16px rgba(26, 32, 44, 0.08);
        --shadow-lg: 0 8px 24px rgba(26, 32, 44, 0.10);
        --radius-card: 12px;
        --radius-btn: 8px;
        --radius-badge: 5px;
        --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        --spacing-section: 80px;
        --spacing-section-mobile: 48px;
        --container-pad-desktop: 48px;
        --container-pad-tablet: 32px;
        --container-pad-mobile: 24px;
        --transition-fast: 0.2s ease;
        --transition-base: 0.3s ease;
    }

    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }

    body {
        font-family: var(--font-stack);
        font-size: 16px;
        font-weight: 400;
        line-height: 1.8;
        color: var(--text-body);
        background-color: #ffffff;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    a {
        color: var(--brand-primary);
        text-decoration: none;
        transition: color var(--transition-fast);
    }
    a:hover {
        color: var(--brand-primary-hover);
        text-decoration: none;
    }
    a:focus-visible {
        outline: 2px solid var(--brand-primary);
        outline-offset: 2px;
        border-radius: 2px;
    }

    img {
        max-width: 100%;
        height: auto;
        display: block;
    }

    button, input, select, textarea {
        font-family: inherit;
        font-size: inherit;
        line-height: inherit;
    }

    .container {
        max-width: 1200px;
        padding-left: var(--container-pad-desktop);
        padding-right: var(--container-pad-desktop);
    }

    @media (max-width: 1199px) {
        .container {
            padding-left: var(--container-pad-tablet);
            padding-right: var(--container-pad-tablet);
        }
    }
    @media (max-width: 575px) {
        .container {
            padding-left: var(--container-pad-mobile);
            padding-right: var(--container-pad-mobile);
        }
    }

    section {
        padding-top: var(--spacing-section);
        padding-bottom: var(--spacing-section);
    }
    @media (max-width: 991px) {
        section {
            padding-top: var(--spacing-section-mobile);
            padding-bottom: var(--spacing-section-mobile);
        }
    }

    .section-bg-alt {
        background-color: var(--brand-bg);
    }
    .section-bg-white {
        background-color: #ffffff;
    }
    .section-bg-deep {
        background-color: var(--brand-dark);
        color: #ffffff;
    }

    .section-label {
        display: inline-block;
        font-size: 13px;
        font-weight: 600;
        color: var(--brand-primary);
        background-color: var(--brand-primary-light);
        padding: 4px 12px;
        border-radius: 20px;
        margin-bottom: 12px;
        letter-spacing: 0.5px;
    }

    .section-desc {
        font-size: 16px;
        color: var(--text-body);
        max-width: 680px;
        line-height: 1.8;
    }

    .btn {
        border-radius: var(--radius-btn);
        font-weight: 500;
        font-size: 15px;
        padding: 10px 20px;
        transition: all var(--transition-base);
        border: none;
        cursor: pointer;
    }
    .btn:focus-visible {
        outline: 2px solid var(--brand-primary);
        outline-offset: 2px;
    }

    .btn-primary-custom {
        background-color: var(--brand-primary);
        color: #ffffff;
        border: 1px solid var(--brand-primary);
    }
    .btn-primary-custom:hover,
    .btn-primary-custom:focus {
        background-color: var(--brand-primary-hover);
        border-color: var(--brand-primary-hover);
        color: #ffffff;
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(43, 108, 176, 0.3);
    }
    .btn-primary-custom:active {
        transform: translateY(0);
        box-shadow: none;
    }

    .btn-outline-custom {
        background-color: transparent;
        color: var(--brand-primary);
        border: 1px solid var(--brand-primary);
    }
    .btn-outline-custom:hover,
    .btn-outline-custom:focus {
        background-color: var(--brand-primary-light);
        color: var(--brand-primary-hover);
        border-color: var(--brand-primary);
    }

    .btn-accent {
        background-color: var(--brand-accent);
        color: #ffffff;
        border: 1px solid var(--brand-accent);
    }
    .btn-accent:hover,
    .btn-accent:focus {
        background-color: #dd4a00;
        border-color: #dd4a00;
        color: #ffffff;
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(245, 101, 0, 0.35);
    }

    .btn-white-outline {
        background-color: transparent;
        color: #ffffff;
        border: 1px solid rgba(255, 255, 255, 0.5);
    }
    .btn-white-outline:hover,
    .btn-white-outline:focus {
        background-color: rgba(255, 255, 255, 0.12);
        border-color: #ffffff;
        color: #ffffff;
    }

    .btn-sm-custom {
        padding: 8px 16px;
        font-size: 14px;
    }

    /* 顶部信息条 */
    .topbar {
        background-color: var(--brand-dark);
        color: #CBD5E0;
        font-size: 12px;
        height: 40px;
        display: flex;
        align-items: center;
        z-index: 1030;
        position: relative;
    }
    .topbar a {
        color: #CBD5E0;
        transition: all var(--transition-fast);
    }
    .topbar a:hover {
        color: #ffffff;
        border-bottom: 1px solid rgba(255, 255, 255, 0.6);
    }
    .topbar .topbar-inner {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
    }
    .topbar .topbar-right {
        display: flex;
        gap: 16px;
        align-items: center;
    }
    @media (max-width: 575px) {
        .topbar {
            height: 32px;
            font-size: 11px;
        }
        .topbar .topbar-right .topbar-secondary-text {
            display: none;
        }
    }

    /* 主导航 */
    .navbar-main {
        background-color: #ffffff;
        min-height: 68px;
        padding: 0;
        z-index: 1025;
        transition: box-shadow var(--transition-base);
        border-bottom: 1px solid var(--border-light);
    }
    .navbar-main.scrolled {
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    }
    .navbar-main .navbar-brand {
        font-weight: 700;
        font-size: 22px;
        color: var(--text-heading);
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 0;
    }
    .navbar-main .navbar-brand .brand-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 32px;
        height: 32px;
        background-color: var(--brand-primary);
        color: #ffffff;
        border-radius: 8px;
        font-size: 16px;
        font-weight: 800;
        flex-shrink: 0;
    }
    .navbar-main .nav-link {
        font-size: 15px;
        font-weight: 500;
        color: var(--text-heading);
        padding: 8px 10px;
        position: relative;
        transition: color var(--transition-fast);
        white-space: nowrap;
    }
    .navbar-main .nav-link::after {
        content: '';
        position: absolute;
        left: 10px;
        right: 10px;
        bottom: 2px;
        height: 2px;
        background-color: var(--brand-primary);
        transform: scaleX(0);
        transform-origin: left;
        transition: transform var(--transition-fast);
        border-radius: 2px;
    }
    .navbar-main .nav-link:hover {
        color: var(--brand-primary);
    }
    .navbar-main .nav-link:hover::after,
    .navbar-main .nav-link.active::after {
        transform: scaleX(1);
    }
    .navbar-main .nav-link.active {
        color: var(--brand-primary);
        font-weight: 600;
    }
    .navbar-main .navbar-toggler {
        border: 1px solid var(--border-mid);
        border-radius: 8px;
        padding: 6px 10px;
        box-shadow: none;
    }
    .navbar-main .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%231A202C' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }
    @media (max-width: 991px) {
        .navbar-main {
            min-height: 60px;
        }
        .navbar-main .navbar-collapse {
            padding: 12px 0 16px;
            border-top: 1px solid var(--border-light);
        }
        .navbar-main .nav-link {
            padding: 12px 4px;
        }
        .navbar-main .nav-link::after {
            left: 4px;
            right: 4px;
            bottom: 4px;
        }
    }

    /* Page Header */
    .page-header {
        background-color: var(--brand-bg);
        padding: 36px 0 32px;
    }
    .page-header .breadcrumb {
        margin-bottom: 10px;
        font-size: 13px;
        color: var(--text-muted);
    }
    .page-header .breadcrumb a {
        color: var(--text-muted);
    }
    .page-header .breadcrumb a:hover {
        color: var(--brand-primary);
    }
    .page-header .breadcrumb .separator {
        margin: 0 6px;
        color: var(--text-weak);
    }
    .page-header h1 {
        font-size: 34px;
        font-weight: 800;
        line-height: 1.25;
        color: var(--text-heading);
        margin-bottom: 10px;
    }
    .page-header .page-header-desc {
        font-size: 16px;
        color: var(--text-body);
        max-width: 680px;
        line-height: 1.8;
        margin-bottom: 0;
    }
    @media (max-width: 575px) {
        .page-header {
            padding: 24px 0 22px;
        }
        .page-header h1 {
            font-size: 24px;
        }
    }

    /* 图文交错区 */
    .interleave-section .interleave-item {
        margin-bottom: 48px;
    }
    .interleave-section .interleave-item:last-child {
        margin-bottom: 0;
    }
    .interleave-img-wrap {
        position: relative;
        overflow: hidden;
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-sm);
        transition: box-shadow var(--transition-base), transform var(--transition-base);
        background-color: var(--brand-bg-alt);
    }
    .interleave-img-wrap:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-2px);
    }
    .interleave-img-wrap img {
        width: 100%;
        height: 260px;
        object-fit: cover;
        border-radius: var(--radius-card);
    }
    .interleave-content {
        padding: 12px 0;
    }
    .interleave-content .interleave-tag {
        display: inline-block;
        font-size: 12px;
        font-weight: 600;
        color: var(--brand-accent);
        background-color: rgba(245, 101, 0, 0.08);
        padding: 3px 10px;
        border-radius: var(--radius-badge);
        margin-bottom: 10px;
        letter-spacing: 0.3px;
    }
    .interleave-content h3 {
        font-size: 20px;
        font-weight: 700;
        color: var(--text-heading);
        line-height: 1.4;
        margin-bottom: 10px;
    }
    .interleave-content .interleave-brief {
        font-size: 15px;
        color: var(--text-body);
        line-height: 1.8;
        margin-bottom: 14px;
        max-width: 520px;
    }
    .interleave-content .interleave-more {
        font-size: 14px;
        font-weight: 500;
        color: var(--brand-primary);
        display: inline-flex;
        align-items: center;
        gap: 4px;
    }
    .interleave-content .interleave-more:hover {
        color: var(--brand-primary-hover);
    }
    .interleave-content .interleave-more i {
        font-size: 12px;
        transition: transform var(--transition-fast);
    }
    .interleave-content .interleave-more:hover i {
        transform: translateX(3px);
    }
    @media (max-width: 991px) {
        .interleave-img-wrap img {
            height: 200px;
        }
        .interleave-content {
            padding: 12px 4px;
        }
        .interleave-section .interleave-item {
            margin-bottom: 36px;
        }
    }
    @media (max-width: 767px) {
        .interleave-img-wrap img {
            height: 180px;
        }
    }

    /* 玩法卡片 */
    .play-card-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    .play-card {
        background: #fff;
        border: 1px solid var(--border-light);
        border-radius: var(--radius-card);
        padding: 24px 20px;
        box-shadow: var(--shadow-sm);
        transition: all var(--transition-base);
        display: flex;
        flex-direction: column;
    }
    .play-card:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-4px);
        border-color: var(--brand-primary-border);
    }
    .play-card .play-card-icon {
        width: 44px;
        height: 44px;
        border-radius: 10px;
        background-color: var(--brand-primary-light);
        color: var(--brand-primary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        margin-bottom: 14px;
    }
    .play-card h4 {
        font-size: 17px;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 8px;
        line-height: 1.4;
    }
    .play-card p {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.7;
        margin-bottom: 0;
        flex-grow: 1;
    }
    .play-card .play-card-link {
        margin-top: 12px;
        font-size: 13px;
        font-weight: 600;
        color: var(--brand-primary);
    }
    .play-card .play-card-link:hover {
        color: var(--brand-primary-hover);
    }
    .play-card.card-featured {
        border-color: var(--brand-primary);
        background: linear-gradient(180deg, rgba(43, 108, 176, 0.04) 0%, #ffffff 100%);
    }
    .play-card.card-featured .play-card-icon {
        background-color: var(--brand-primary);
        color: #fff;
    }
    @media (max-width: 991px) {
        .play-card-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
    }
    @media (max-width: 575px) {
        .play-card-grid {
            grid-template-columns: 1fr;
            gap: 14px;
        }
    }

    /* 统计条 */
    .stat-bar-section {
        background-color: var(--brand-dark);
        color: #ffffff;
        padding: 32px 0;
    }
    .stat-bar-section .stat-item {
        text-align: center;
        padding: 12px 8px;
    }
    .stat-bar-section .stat-number {
        font-size: 28px;
        font-weight: 800;
        color: var(--brand-accent-light);
        line-height: 1.2;
        margin-bottom: 4px;
    }
    .stat-bar-section .stat-label {
        font-size: 13px;
        color: #CBD5E0;
    }
    @media (max-width: 767px) {
        .stat-bar-section {
            padding: 22px 0;
        }
        .stat-bar-section .stat-number {
            font-size: 22px;
        }
    }

    /* 安全与规则 */
    .rule-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    .rule-card {
        background: #fff;
        border: 1px solid var(--border-light);
        border-radius: var(--radius-card);
        padding: 20px;
        box-shadow: var(--shadow-sm);
        display: flex;
        align-items: flex-start;
        gap: 14px;
        transition: all var(--transition-base);
    }
    .rule-card:hover {
        box-shadow: var(--shadow-md);
        border-color: var(--brand-primary-border);
    }
    .rule-card .rule-icon {
        width: 40px;
        height: 40px;
        border-radius: 8px;
        background-color: var(--brand-primary-light);
        color: var(--brand-primary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        flex-shrink: 0;
    }
    .rule-card h4 {
        font-size: 16px;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 6px;
        line-height: 1.4;
    }
    .rule-card p {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.7;
        margin-bottom: 0;
    }
    @media (max-width: 767px) {
        .rule-grid {
            grid-template-columns: 1fr;
            gap: 12px;
        }
    }

    /* FAQ */
    .faq-section .accordion-item {
        border: 1px solid var(--border-light);
        border-radius: 8px;
        margin-bottom: 10px;
        overflow: hidden;
        box-shadow: none;
        transition: box-shadow var(--transition-base);
    }
    .faq-section .accordion-item:hover {
        box-shadow: var(--shadow-sm);
    }
    .faq-section .accordion-item:has(.accordion-button:not(.collapsed)) {
        box-shadow: var(--shadow-md);
        border-color: var(--brand-primary-border);
    }
    .faq-section .accordion-button {
        font-size: 16px;
        font-weight: 600;
        color: var(--text-heading);
        background-color: #ffffff;
        padding: 16px 20px;
        border: none;
        box-shadow: none;
        transition: color var(--transition-fast), background-color var(--transition-fast);
    }
    .faq-section .accordion-button:not(.collapsed) {
        background-color: var(--brand-bg);
        color: var(--brand-primary);
    }
    .faq-section .accordion-button:focus {
        box-shadow: none;
        outline: none;
    }
    .faq-section .accordion-button::after {
        width: 14px;
        height: 14px;
        background-size: 14px;
        transition: transform var(--transition-base);
    }
    .faq-section .accordion-button:not(.collapsed)::after {
        transform: rotate(180deg);
    }
    .faq-section .accordion-body {
        font-size: 15px;
        color: var(--text-body);
        line-height: 1.8;
        padding: 8px 20px 18px;
        background-color: var(--brand-bg);
    }

    /* CTA */
    .cta-section {
        padding-top: 0;
        padding-bottom: var(--spacing-section);
    }
    .cta-section .cta-card {
        background-color: var(--brand-dark);
        border-radius: 16px;
        padding: 48px 40px;
        text-align: center;
        color: #ffffff;
    }
    .cta-section .cta-card h2 {
        font-size: 26px;
        font-weight: 800;
        color: #ffffff;
        margin-bottom: 12px;
        line-height: 1.3;
    }
    .cta-section .cta-card p {
        font-size: 15px;
        color: #CBD5E0;
        margin-bottom: 24px;
        max-width: 520px;
        margin-left: auto;
        margin-right: auto;
    }
    .cta-section .cta-card .btn {
        padding: 14px 28px;
        font-size: 16px;
    }
    @media (max-width: 767px) {
        .cta-section .cta-card {
            padding: 32px 20px;
            border-radius: 12px;
        }
        .cta-section .cta-card h2 {
            font-size: 20px;
        }
    }

    /* 页脚 */
    .footer-main {
        background-color: var(--brand-footer);
        color: var(--text-weak);
        padding: 56px 0 0;
    }
    .footer-main .footer-brand {
        font-weight: 700;
        font-size: 20px;
        color: #ffffff;
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 12px;
    }
    .footer-main .footer-brand .brand-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 30px;
        height: 30px;
        background-color: var(--brand-primary);
        color: #ffffff;
        border-radius: 7px;
        font-size: 14px;
        font-weight: 800;
    }
    .footer-main p {
        font-size: 14px;
        color: var(--text-weak);
        line-height: 1.7;
        margin-bottom: 0;
    }
    .footer-main .footer-heading {
        font-size: 15px;
        font-weight: 700;
        color: #ffffff;
        margin-bottom: 14px;
    }
    .footer-main ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .footer-main ul li {
        margin-bottom: 8px;
    }
    .footer-main ul li a {
        font-size: 14px;
        color: var(--text-weak);
        transition: color var(--transition-fast);
    }
    .footer-main ul li a:hover {
        color: #ffffff;
    }
    .footer-main .footer-divider {
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding: 16px 0;
        margin-top: 32px;
        display: flex;
        flex-wrap: wrap;
        gap: 10px 20px;
        justify-content: space-between;
        font-size: 12px;
        color: var(--text-weak);
    }
    .footer-main .footer-divider a {
        color: var(--text-weak);
    }
    .footer-main .footer-divider a:hover {
        color: #ffffff;
    }
    @media (max-width: 767px) {
        .footer-main {
            padding: 40px 0 0;
        }
        .footer-main .footer-divider {
            flex-direction: column;
            gap: 6px;
            text-align: center;
            margin-top: 24px;
        }
    }

/* roulang page: category4 */
:root {
            --brand-primary: #2B6CB0;
            --brand-primary-hover: #2C5282;
            --brand-primary-light: rgba(43, 108, 176, 0.08);
            --brand-primary-border: rgba(43, 108, 176, 0.3);
            --brand-accent: #F56500;
            --brand-accent-light: #ED8936;
            --brand-dark: #1A2B4A;
            --brand-footer: #1A202C;
            --brand-bg: #F7FAFC;
            --brand-bg-alt: #EDF2F7;
            --text-heading: #1A202C;
            --text-body: #4A5568;
            --text-muted: #718096;
            --text-weak: #A0AEC0;
            --border-light: #E2E8F0;
            --border-mid: #CBD5E0;
            --shadow-sm: 0 2px 8px rgba(26, 32, 44, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 32, 44, 0.08);
            --shadow-lg: 0 8px 24px rgba(26, 32, 44, 0.10);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 5px;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --container-pad-desktop: 48px;
            --container-pad-tablet: 32px;
            --container-pad-mobile: 24px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-body);
            background-color: #ffffff;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--brand-primary-hover);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
            border-radius: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: 1200px;
            padding-left: var(--container-pad-desktop);
            padding-right: var(--container-pad-desktop);
        }
        section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }
        .section-bg-alt {
            background-color: var(--brand-bg);
        }
        .section-bg-white {
            background-color: #ffffff;
        }
        .section-bg-deep {
            background-color: var(--brand-dark);
            color: #ffffff;
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-primary);
            background-color: var(--brand-primary-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-body);
            max-width: 680px;
            line-height: 1.8;
        }
        .btn {
            border-radius: var(--radius-btn);
            font-weight: 500;
            font-size: 15px;
            padding: 10px 20px;
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
        }
        .btn:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background-color: var(--brand-primary);
            color: #ffffff;
            border: 1px solid var(--brand-primary);
        }
        .btn-primary-custom:hover {
            background-color: var(--brand-primary-hover);
            border-color: var(--brand-primary-hover);
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(43, 108, 176, 0.3);
        }
        .btn-primary-custom:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-outline-custom {
            background-color: transparent;
            color: var(--brand-primary);
            border: 1px solid var(--brand-primary);
        }
        .btn-outline-custom:hover {
            background-color: var(--brand-primary-light);
            color: var(--brand-primary-hover);
            border-color: var(--brand-primary);
        }
        .btn-accent {
            background-color: var(--brand-accent);
            color: #ffffff;
            border: 1px solid var(--brand-accent);
        }
        .btn-accent:hover {
            background-color: #dd4a00;
            border-color: #dd4a00;
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(245, 101, 0, 0.35);
        }
        .btn-white-outline {
            background-color: transparent;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.6);
        }
        .btn-white-outline:hover {
            background-color: rgba(255, 255, 255, 0.12);
            color: #ffffff;
            border-color: #ffffff;
        }
        .btn-sm-custom {
            padding: 8px 18px;
            font-size: 14px;
        }
        .top-info-bar {
            background-color: var(--brand-dark);
            color: #CBD5E0;
            font-size: 12px;
            padding: 8px 0;
            height: 38px;
            display: flex;
            align-items: center;
        }
        .top-info-bar a {
            color: #CBD5E0;
            border-bottom: 1px solid transparent;
            transition: all var(--transition-fast);
        }
        .top-info-bar a:hover {
            color: #ffffff;
            border-bottom-color: #ffffff;
        }
        .navbar-main {
            background-color: #ffffff;
            padding: 12px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: box-shadow var(--transition-base);
        }
        .navbar-main.scrolled {
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
        }
        .navbar-brand {
            font-size: 21px;
            font-weight: 700;
            color: var(--text-heading);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-brand:hover {
            color: var(--brand-primary);
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background-color: var(--brand-primary);
            color: #ffffff;
            font-size: 18px;
            font-weight: 700;
            border-radius: 8px;
            flex-shrink: 0;
        }
        .navbar-main .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-heading);
            padding: 8px 14px;
            position: relative;
            transition: color var(--transition-fast);
        }
        .navbar-main .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--brand-primary);
            transition: width var(--transition-fast);
        }
        .navbar-main .nav-link:hover {
            color: var(--brand-primary);
        }
        .navbar-main .nav-link:hover::after,
        .navbar-main .nav-link.active::after {
            width: 100%;
        }
        .navbar-main .nav-link.active {
            color: var(--brand-primary);
        }
        .navbar-toggler {
            border: none;
            padding: 6px 10px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%232B6CB0' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .page-header {
            background-color: var(--brand-bg);
            padding: 48px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .breadcrumb-custom {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb-custom a {
            color: var(--text-muted);
        }
        .breadcrumb-custom a:hover {
            color: var(--brand-primary);
        }
        .breadcrumb-custom .separator {
            color: var(--text-weak);
        }
        .breadcrumb-custom .current {
            color: var(--brand-primary);
            font-weight: 600;
        }
        .page-header h1 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-heading);
            line-height: 1.3;
            margin-bottom: 8px;
        }
        .page-header .header-desc {
            font-size: 16px;
            color: var(--text-body);
            max-width: 720px;
        }
        .feature-block {
            background: #ffffff;
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            height: 100%;
            border: 1px solid var(--border-light);
        }
        .feature-block:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: var(--brand-primary-border);
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background-color: var(--brand-primary-light);
            color: var(--brand-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .feature-block h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 10px;
        }
        .feature-block p {
            font-size: 15px;
            color: var(--text-body);
            margin-bottom: 0;
        }
        .feature-block .feature-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--brand-accent);
            background-color: rgba(245, 101, 0, 0.1);
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
        }
        .stat-badge {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            box-shadow: var(--shadow-sm);
        }
        .stat-badge .stat-number {
            font-size: 26px;
            font-weight: 700;
            color: var(--brand-primary);
            line-height: 1.2;
        }
        .stat-badge .stat-label {
            font-size: 13px;
            color: var(--text-muted);
        }
        .deep-content-card {
            background: #ffffff;
            border-radius: var(--radius-card);
            padding: 32px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .deep-content-card h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
        }
        .deep-content-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 12px;
        }
        .deep-content-card p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: 8px !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: none;
            transition: box-shadow var(--transition-base);
        }
        .faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
            box-shadow: var(--shadow-md);
        }
        .faq-accordion .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            padding: 18px 20px;
            background-color: #ffffff;
            border-radius: 8px !important;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--brand-primary);
            background-color: var(--brand-bg);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--brand-primary);
            outline-offset: -2px;
        }
        .faq-accordion .accordion-button::after {
            transition: transform var(--transition-base);
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }
        .faq-accordion .accordion-body {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            padding: 16px 20px 20px;
            background-color: var(--brand-bg);
        }
        .cta-section {
            background-color: var(--brand-dark);
            border-radius: 16px;
            padding: 48px 40px;
            text-align: center;
            color: #ffffff;
        }
        .cta-section h2 {
            font-size: 26px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
        }
        .footer-main {
            background-color: var(--brand-footer);
            color: #A0AEC0;
            padding: 56px 0 0;
            margin-top: 0;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }
        .footer-brand:hover {
            color: #ffffff;
        }
        .footer-brand .brand-icon {
            background-color: var(--brand-primary);
        }
        .footer-main p {
            font-size: 14px;
            line-height: 1.7;
            color: #A0AEC0;
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
        }
        .footer-main ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-main ul li {
            margin-bottom: 10px;
        }
        .footer-main ul li a {
            font-size: 14px;
            color: #A0AEC0;
            transition: color var(--transition-fast);
        }
        .footer-main ul li a:hover {
            color: #ffffff;
        }
        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 16px 0;
            margin-top: 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 12px;
            color: #A0AEC0;
        }
        .footer-divider a {
            color: #A0AEC0;
            font-size: 12px;
        }
        .footer-divider a:hover {
            color: #ffffff;
        }
        @media (max-width: 991.98px) {
            .container {
                padding-left: var(--container-pad-tablet);
                padding-right: var(--container-pad-tablet);
            }
            section {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
            .page-header h1 {
                font-size: 26px;
            }
        }
        @media (max-width: 767.98px) {
            .container {
                padding-left: var(--container-pad-mobile);
                padding-right: var(--container-pad-mobile);
            }
            .page-header {
                padding: 32px 0;
            }
            .page-header h1 {
                font-size: 22px;
            }
            .feature-block {
                padding: 20px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section h2 {
                font-size: 20px;
            }
            .footer-divider {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .top-info-bar .d-none-sm {
                display: none !important;
            }
        }
        @media (max-width: 575.98px) {
            .top-info-bar {
                height: 32px;
                font-size: 11px;
            }
            .page-header h1 {
                font-size: 20px;
            }
            .btn-sm-custom {
                font-size: 13px;
                padding: 6px 14px;
            }
            .stat-badge .stat-number {
                font-size: 20px;
            }
        }

/* roulang page: category5 */
:root {
            --brand-primary: #2B6CB0;
            --brand-primary-hover: #2C5282;
            --brand-primary-light: rgba(43, 108, 176, 0.08);
            --brand-primary-border: rgba(43, 108, 176, 0.3);
            --brand-accent: #F56500;
            --brand-accent-light: #ED8936;
            --brand-dark: #1A2B4A;
            --brand-footer: #1A202C;
            --brand-bg: #F7FAFC;
            --brand-bg-alt: #EDF2F7;
            --text-heading: #1A202C;
            --text-body: #4A5568;
            --text-muted: #718096;
            --text-weak: #A0AEC0;
            --border-light: #E2E8F0;
            --border-mid: #CBD5E0;
            --shadow-sm: 0 2px 8px rgba(26, 32, 44, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 32, 44, 0.08);
            --shadow-lg: 0 8px 24px rgba(26, 32, 44, 0.10);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 5px;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --container-pad-desktop: 48px;
            --container-pad-tablet: 32px;
            --container-pad-mobile: 24px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-body);
            background-color: #ffffff;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--brand-primary-hover);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: var(--container-pad-desktop);
            padding-right: var(--container-pad-desktop);
        }

        @media (max-width: 1199px) {
            .container {
                padding-left: var(--container-pad-tablet);
                padding-right: var(--container-pad-tablet);
            }
        }

        @media (max-width: 575px) {
            .container {
                padding-left: var(--container-pad-mobile);
                padding-right: var(--container-pad-mobile);
            }
        }

        section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        @media (max-width: 991px) {
            section {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
        }

        .section-bg-alt {
            background-color: var(--brand-bg);
        }

        .section-bg-white {
            background-color: #ffffff;
        }

        .section-bg-deep {
            background-color: var(--brand-dark);
            color: #ffffff;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-primary);
            background-color: var(--brand-primary-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-body);
            max-width: 680px;
            line-height: 1.8;
        }

        .btn {
            border-radius: var(--radius-btn);
            font-weight: 500;
            font-size: 15px;
            padding: 10px 20px;
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
        }

        .btn:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
        }

        .btn-primary-custom {
            background-color: var(--brand-primary);
            color: #ffffff;
            border: 1px solid var(--brand-primary);
        }

        .btn-primary-custom:hover {
            background-color: var(--brand-primary-hover);
            border-color: var(--brand-primary-hover);
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(43, 108, 176, 0.3);
        }

        .btn-primary-custom:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-outline-custom {
            background-color: transparent;
            color: var(--brand-primary);
            border: 1px solid var(--brand-primary);
        }

        .btn-outline-custom:hover {
            background-color: var(--brand-primary-light);
            color: var(--brand-primary-hover);
            border-color: var(--brand-primary);
        }

        .btn-accent {
            background-color: var(--brand-accent);
            color: #ffffff;
            border: 1px solid var(--brand-accent);
        }

        .btn-accent:hover {
            background-color: #dd4a00;
            border-color: #dd4a00;
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(245, 101, 0, 0.35);
        }

        .btn-white-outline {
            background-color: transparent;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.6);
        }

        .btn-white-outline:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: #ffffff;
            color: #ffffff;
        }

        .btn-white-solid {
            background-color: #ffffff;
            color: var(--brand-primary);
            border: 1px solid #ffffff;
        }

        .btn-white-solid:hover {
            background-color: #EDF2F7;
            border-color: #EDF2F7;
            color: var(--brand-primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(255, 255, 255, 0.3);
        }

        .btn-sm-custom {
            font-size: 14px;
            padding: 8px 18px;
        }

        /* Top Info Bar */
        .top-info-bar {
            background-color: var(--brand-dark);
            color: #CBD5E0;
            font-size: 12px;
            height: 38px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .top-info-bar a {
            color: #CBD5E0;
            font-size: 12px;
            border-bottom: 1px solid transparent;
            transition: border-color var(--transition-fast), color var(--transition-fast);
        }

        .top-info-bar a:hover {
            color: #ffffff;
            border-bottom-color: #CBD5E0;
        }

        .top-info-bar .top-info-left {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .top-info-bar .top-info-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        @media (max-width: 575px) {
            .top-info-bar {
                height: 32px;
                font-size: 11px;
            }
            .top-info-bar .top-info-right .secondary-link {
                display: none;
            }
        }

        /* Navbar */
        .navbar-main {
            background-color: #ffffff;
            min-height: 68px;
            padding: 10px 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            transition: box-shadow var(--transition-base);
            border-bottom: 1px solid var(--border-light);
        }

        .navbar-main.scrolled {
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
        }

        .navbar-main .navbar-brand {
            font-size: 21px;
            font-weight: 700;
            color: var(--text-heading);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-right: 24px;
        }

        .navbar-main .navbar-brand:hover {
            color: var(--brand-primary);
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background-color: var(--brand-primary);
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            border-radius: 8px;
            flex-shrink: 0;
        }

        .navbar-main .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-heading);
            padding: 8px 14px;
            position: relative;
            transition: color var(--transition-fast);
            border-bottom: 2px solid transparent;
        }

        .navbar-main .nav-link::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            width: 0;
            height: 2px;
            background-color: var(--brand-primary);
            transition: all var(--transition-fast);
            transform: translateX(-50%);
        }

        .navbar-main .nav-link:hover {
            color: var(--brand-primary);
        }

        .navbar-main .nav-link:hover::after {
            width: 70%;
        }

        .navbar-main .nav-link.active {
            color: var(--brand-primary);
        }

        .navbar-main .nav-link.active::after {
            width: 70%;
        }

        .navbar-main .navbar-toggler {
            border: 1px solid var(--border-mid);
            border-radius: var(--radius-btn);
            padding: 8px 10px;
            background-color: transparent;
        }

        .navbar-main .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
        }

        .navbar-main .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%231A202C' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        @media (max-width: 991px) {
            .navbar-main .navbar-collapse {
                margin-top: 12px;
                padding: 16px;
                border-radius: 12px;
                background-color: #ffffff;
                border: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
            }
            .navbar-main .nav-link {
                padding: 12px 10px;
                border-left: 3px solid transparent;
                border-bottom: none;
            }
            .navbar-main .nav-link::after {
                display: none;
            }
            .navbar-main .nav-link.active {
                border-left: 3px solid var(--brand-primary);
                background-color: var(--brand-primary-light);
                border-radius: 0 8px 8px 0;
            }
            .navbar-main .nav-link:hover {
                background-color: var(--brand-bg);
                border-radius: 8px;
            }
            .navbar-main .nav-link.active:hover {
                background-color: var(--brand-primary-light);
            }
        }

        /* Page Header */
        .page-header {
            background-color: var(--brand-bg);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border-light);
        }

        .page-header .breadcrumb {
            margin-bottom: 16px;
            font-size: 14px;
        }

        .page-header .breadcrumb a {
            color: var(--text-muted);
            font-weight: 500;
        }

        .page-header .breadcrumb a:hover {
            color: var(--brand-primary);
        }

        .page-header .breadcrumb .breadcrumb-item.active {
            color: var(--text-heading);
            font-weight: 600;
        }

        .page-header .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-weak);
        }

        .page-header h1 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .page-header .page-header-desc {
            font-size: 16px;
            color: var(--text-body);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        @media (max-width: 767px) {
            .page-header h1 {
                font-size: 26px;
            }
            .page-header {
                padding: 32px 0 28px;
            }
        }

        /* Stats Bar */
        .stats-bar-section {
            padding: 40px 0;
            background-color: #ffffff;
            border-bottom: 1px solid var(--border-light);
        }

        .stats-bar-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-item {
            text-align: center;
            padding: 20px 16px;
            border-radius: var(--radius-card);
            background-color: var(--brand-bg);
            transition: all var(--transition-base);
        }

        .stat-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .stat-item .stat-number {
            font-size: 26px;
            font-weight: 700;
            color: var(--brand-primary);
            line-height: 1.3;
            margin-bottom: 4px;
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        @media (max-width: 991px) {
            .stats-bar-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 575px) {
            .stats-bar-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .stat-number {
                font-size: 20px;
            }
            .stat-item .stat-label {
                font-size: 12px;
            }
        }

        /* Team Ranking Cards */
        .ranking-cards-section {
            background-color: #ffffff;
        }

        .ranking-cards-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .team-card {
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            overflow: hidden;
            background-color: #ffffff;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            height: 100%;
        }

        .team-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--brand-primary-border);
        }

        .team-card .team-card-img-wrapper {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
        }

        .team-card .team-card-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .team-card .team-ranking-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background-color: var(--brand-accent);
            color: #ffffff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            letter-spacing: 0.5px;
        }

        .team-card .team-card-body {
            padding: 24px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .team-card .team-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }

        .team-card:hover .team-name {
            color: var(--brand-primary);
        }

        .team-card .team-desc {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .team-card .team-metrics {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 16px;
            border-top: 1px solid var(--border-light);
        }

        .team-card .metric-item {
            text-align: center;
        }

        .team-card .metric-item .metric-value {
            font-size: 16px;
            font-weight: 700;
            color: var(--brand-primary);
            line-height: 1.3;
        }

        .team-card .metric-item .metric-name {
            font-size: 12px;
            color: var(--text-muted);
        }

        @media (max-width: 991px) {
            .ranking-cards-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 575px) {
            .team-card .team-card-body {
                padding: 16px 20px;
            }
            .team-card .team-name {
                font-size: 18px;
            }
        }

        /* Ranking Rules */
        .ranking-rules-section {
            background-color: var(--brand-bg);
        }

        .rules-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .rule-card {
            background-color: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            height: 100%;
        }

        .rule-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--brand-primary-border);
        }

        .rule-card .rule-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background-color: var(--brand-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-size: 20px;
            color: var(--brand-primary);
        }

        .rule-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
        }

        .rule-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 0;
        }

        @media (max-width: 991px) {
            .rules-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 767px) {
            .rules-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Team Deep Analysis */
        .team-analysis-section {
            background-color: #ffffff;
        }

        .analysis-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            padding: 32px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .analysis-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .analysis-item:first-child {
            padding-top: 0;
        }

        .analysis-item .analysis-img {
            border-radius: var(--radius-card);
            overflow: hidden;
            aspect-ratio: 16/9;
            box-shadow: var(--shadow-md);
        }

        .analysis-item .analysis-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .analysis-item .analysis-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .analysis-item .analysis-content p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .analysis-item .analysis-content .analysis-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--brand-primary);
            background-color: var(--brand-primary-light);
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        @media (max-width: 767px) {
            .analysis-item {
                grid-template-columns: 1fr;
                gap: 20px;
                padding: 24px 0;
            }
            .analysis-item .analysis-content h3 {
                font-size: 18px;
            }
        }

        /* Data Dimensions */
        .data-dimensions-section {
            background-color: var(--brand-bg);
        }

        .dimension-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-top: 32px;
        }

        .dimension-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background-color: #ffffff;
            border-radius: var(--radius-card);
            padding: 20px 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .dimension-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .dimension-item .dim-icon {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background-color: var(--brand-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-primary);
            font-size: 16px;
        }

        .dimension-item .dim-info h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 4px;
        }

        .dimension-item .dim-info p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        @media (max-width: 767px) {
            .dimension-list {
                grid-template-columns: 1fr;
            }
        }

        /* Trend Section */
        .trend-section {
            background-color: #ffffff;
        }

        .trend-card {
            background-color: var(--brand-bg);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }

        .trend-card h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
        }

        .trend-card p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .trend-card .trend-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 8px;
        }

        .trend-card .trend-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--text-muted);
            background-color: #ffffff;
            border: 1px solid var(--border-light);
            padding: 4px 12px;
            border-radius: 20px;
            transition: all var(--transition-fast);
        }

        .trend-card .trend-tag:hover {
            color: var(--brand-primary);
            border-color: var(--brand-primary);
            background-color: var(--brand-primary-light);
        }

        /* FAQ */
        .faq-section {
            background-color: var(--brand-bg);
        }

        .accordion-custom {
            border: 1px solid var(--border-light);
            border-radius: 8px;
            overflow: hidden;
            background-color: #ffffff;
            margin-top: 32px;
        }

        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border-light);
            border-radius: 0;
            background-color: transparent;
        }

        .accordion-custom .accordion-item:last-child {
            border-bottom: none;
        }

        .accordion-custom .accordion-header {
            margin: 0;
        }

        .accordion-custom .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            background-color: #ffffff;
            padding: 18px 24px;
            border: none;
            border-radius: 0;
            box-shadow: none;
            transition: all var(--transition-base);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background-color: var(--brand-bg);
            color: var(--brand-primary);
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--brand-primary);
            outline-offset: -2px;
        }

        .accordion-custom .accordion-button .accordion-arrow {
            transition: transform var(--transition-base);
        }

        .accordion-custom .accordion-button:not(.collapsed) .accordion-arrow {
            transform: rotate(180deg);
        }

        .accordion-custom .accordion-body {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            padding: 16px 24px 20px;
            background-color: var(--brand-bg);
        }

        /* CTA */
        .cta-section {
            background-color: var(--brand-dark);
            padding: 60px 0;
        }

        .cta-inner {
            text-align: center;
        }

        .cta-inner h2 {
            font-size: 28px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .cta-inner p {
            font-size: 16px;
            color: #CBD5E0;
            margin-bottom: 24px;
            line-height: 1.7;
        }

        .cta-inner .btn {
            font-size: 16px;
            padding: 14px 28px;
        }

        @media (max-width: 575px) {
            .cta-inner h2 {
                font-size: 22px;
            }
        }

        /* Footer */
        .footer-main {
            background-color: var(--brand-footer);
            color: var(--text-weak);
            padding: 56px 0 0;
        }

        .footer-main .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
        }

        .footer-main .footer-brand:hover {
            color: #ffffff;
        }

        .footer-main .footer-brand .brand-icon {
            background-color: var(--brand-primary);
        }

        .footer-main p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .footer-main .footer-heading {
            font-size: 15px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
        }

        .footer-main ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-main ul li {
            margin-bottom: 8px;
        }

        .footer-main ul li a {
            font-size: 14px;
            color: var(--text-weak);
            transition: color var(--transition-fast);
        }

        .footer-main ul li a:hover {
            color: #ffffff;
        }

        .footer-main .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 16px 0;
            margin-top: 40px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-weak);
        }

        .footer-main .footer-divider a {
            font-size: 12px;
            color: var(--text-weak);
        }

        .footer-main .footer-divider a:hover {
            color: #ffffff;
        }

        @media (max-width: 767px) {
            .footer-main {
                padding: 40px 0 0;
            }
            .footer-main .footer-divider {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

/* roulang page: category6 */
:root {
            --brand-primary: #2B6CB0;
            --brand-primary-hover: #2C5282;
            --brand-primary-light: rgba(43, 108, 176, 0.08);
            --brand-primary-border: rgba(43, 108, 176, 0.3);
            --brand-accent: #F56500;
            --brand-accent-light: #ED8936;
            --brand-dark: #1A2B4A;
            --brand-footer: #1A202C;
            --brand-bg: #F7FAFC;
            --brand-bg-alt: #EDF2F7;
            --text-heading: #1A202C;
            --text-body: #4A5568;
            --text-muted: #718096;
            --text-weak: #A0AEC0;
            --border-light: #E2E8F0;
            --border-mid: #CBD5E0;
            --shadow-sm: 0 2px 8px rgba(26, 32, 44, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 32, 44, 0.08);
            --shadow-lg: 0 8px 24px rgba(26, 32, 44, 0.10);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 5px;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --container-pad-desktop: 48px;
            --container-pad-tablet: 32px;
            --container-pad-mobile: 24px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-body);
            background-color: #ffffff;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--brand-primary-hover);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: var(--container-pad-desktop);
            padding-right: var(--container-pad-desktop);
            margin-left: auto;
            margin-right: auto;
        }

        section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        .section-bg-alt {
            background-color: var(--brand-bg);
        }

        .section-bg-white {
            background-color: #ffffff;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-primary);
            background-color: var(--brand-primary-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-body);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .btn {
            border-radius: var(--radius-btn);
            font-weight: 500;
            font-size: 15px;
            padding: 10px 20px;
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
            display: inline-block;
            text-align: center;
        }

        .btn:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
        }

        .btn-primary-custom {
            background-color: var(--brand-primary);
            color: #ffffff;
            border: 1px solid var(--brand-primary);
        }

        .btn-primary-custom:hover {
            background-color: var(--brand-primary-hover);
            border-color: var(--brand-primary-hover);
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(43, 108, 176, 0.3);
        }

        .btn-primary-custom:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-outline-custom {
            background-color: transparent;
            color: var(--brand-primary);
            border: 1px solid var(--brand-primary);
        }

        .btn-outline-custom:hover {
            background-color: var(--brand-primary-light);
            color: var(--brand-primary-hover);
            border-color: var(--brand-primary);
        }

        .btn-accent {
            background-color: var(--brand-accent);
            color: #ffffff;
            border: 1px solid var(--brand-accent);
        }

        .btn-accent:hover {
            background-color: #dd4a00;
            border-color: #dd4a00;
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(245, 101, 0, 0.35);
        }

        .btn-white-outline {
            background-color: transparent;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.6);
        }

        .btn-white-outline:hover {
            background-color: rgba(255, 255, 255, 0.12);
            color: #ffffff;
            border-color: #ffffff;
        }

        /* 顶部信息条 */
        .topbar {
            height: 38px;
            background-color: var(--brand-dark);
            color: #CBD5E0;
            font-size: 12px;
            display: flex;
            align-items: center;
            padding: 0 24px;
        }

        .topbar-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .topbar-left {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .topbar-right a {
            color: #CBD5E0;
            font-size: 12px;
            transition: color var(--transition-fast);
            border-bottom: 1px solid transparent;
        }

        .topbar-right a:hover {
            color: #ffffff;
            border-bottom-color: #ffffff;
        }

        /* 主导航 */
        .navbar-main {
            background-color: #ffffff;
            min-height: 68px;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 1px 0 var(--border-light);
            transition: box-shadow var(--transition-base);
        }

        .navbar-main.scrolled {
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
        }

        .navbar-main .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            flex-wrap: wrap;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 21px;
            font-weight: 700;
            color: var(--text-heading);
            transition: color var(--transition-fast);
            padding: 0;
            margin: 0;
        }

        .navbar-brand:hover {
            color: var(--brand-primary);
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background-color: var(--brand-primary);
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            border-radius: 6px;
            flex-shrink: 0;
        }

        .navbar-nav .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-heading);
            padding: 8px 12px;
            position: relative;
            transition: color var(--transition-fast);
        }

        .navbar-nav .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 12px;
            right: 12px;
            height: 2px;
            background-color: var(--brand-primary);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform var(--transition-fast);
        }

        .navbar-nav .nav-link:hover {
            color: var(--brand-primary);
        }

        .navbar-nav .nav-link:hover::after {
            transform: scaleX(1);
        }

        .navbar-nav .nav-link.active {
            color: var(--brand-primary);
        }

        .navbar-nav .nav-link.active::after {
            transform: scaleX(1);
        }

        .navbar-toggler {
            border: 1px solid var(--border-mid);
            border-radius: 6px;
            padding: 6px 10px;
            background-color: #ffffff;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.15);
            outline: none;
        }

        .btn-sm-custom {
            padding: 8px 18px;
            font-size: 14px;
        }

        /* Page Header */
        .page-header-section {
            background-color: var(--brand-bg);
            padding-top: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid var(--border-light);
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            list-style: none;
            padding: 0;
        }

        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-custom li + li::before {
            content: '›';
            color: var(--text-weak);
            font-size: 16px;
        }

        .breadcrumb-custom a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb-custom a:hover {
            color: var(--brand-primary);
        }

        .breadcrumb-custom .current {
            color: var(--text-heading);
            font-weight: 500;
        }

        .page-header-section h1 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .page-header-section .lead {
            font-size: 16px;
            color: var(--text-body);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* 排名速览 */
        .ranking-overview-section {
            background-color: #ffffff;
        }

        .overview-card {
            background-color: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
            height: 100%;
        }

        .overview-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .overview-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--brand-primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .overview-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 时间线新闻列表 */
        .timeline-news-section {
            background-color: var(--brand-bg);
        }

        .timeline {
            position: relative;
            padding-left: 36px;
            max-width: 860px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background-color: var(--border-mid);
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 32px;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-marker {
            position: absolute;
            left: -36px;
            top: 6px;
            width: 26px;
            height: 26px;
            background-color: #ffffff;
            border: 3px solid var(--brand-primary);
            border-radius: 50%;
            z-index: 1;
        }

        .timeline-date {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-primary);
            background-color: var(--brand-primary-light);
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }

        .timeline-card {
            background-color: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
        }

        .timeline-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .timeline-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .timeline-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .timeline-card .read-more {
            font-size: 14px;
            font-weight: 500;
            color: var(--brand-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            border: 1px solid var(--brand-primary-border);
            padding: 6px 16px;
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
        }

        .timeline-card .read-more:hover {
            background-color: var(--brand-primary);
            color: #ffffff;
            border-color: var(--brand-primary);
        }

        .timeline-card .read-more i {
            font-size: 12px;
            transition: transform var(--transition-fast);
        }

        .timeline-card .read-more:hover i {
            transform: translateX(3px);
        }

        /* 深度解读 */
        .depth-analysis-section {
            background-color: #ffffff;
        }

        .depth-analysis-section .depth-block {
            margin-bottom: 48px;
        }

        .depth-analysis-section .depth-block:last-child {
            margin-bottom: 0;
        }

        .depth-analysis-section h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .depth-analysis-section p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.9;
            margin-bottom: 14px;
        }

        .depth-figure {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            margin: 20px 0 24px;
        }

        .depth-figure img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .depth-figure figcaption {
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            padding: 10px 16px;
            background-color: var(--brand-bg);
        }

        /* 战队实力对比 */
        .team-comparison-section {
            background-color: var(--brand-bg);
        }

        .team-comp-row {
            display: flex;
            align-items: center;
            gap: 40px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }

        .team-comp-row:last-child {
            margin-bottom: 0;
        }

        .team-comp-row.reverse {
            flex-direction: row-reverse;
        }

        .team-comp-text {
            flex: 1 1 420px;
            min-width: 0;
        }

        .team-comp-text h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 10px;
        }

        .team-comp-text p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.85;
            margin-bottom: 12px;
        }

        .team-comp-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--brand-primary);
            background-color: var(--brand-primary-light);
            padding: 3px 10px;
            border-radius: 16px;
            margin-right: 6px;
            margin-bottom: 4px;
        }

        .team-comp-text .metric-row {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            margin-top: 12px;
        }

        .team-comp-text .metric-item {
            text-align: center;
        }

        .team-comp-text .metric-item .metric-num {
            font-size: 18px;
            font-weight: 700;
            color: var(--brand-primary);
        }

        .team-comp-text .metric-item .metric-label {
            font-size: 12px;
            color: var(--text-muted);
        }

        .team-comp-img {
            flex: 1 1 340px;
            min-width: 0;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .team-comp-img img {
            width: 100%;
            height: 260px;
            object-fit: cover;
        }

        /* 观赛指南 */
        .watching-guide-section {
            background-color: #ffffff;
        }

        .guide-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .guide-list li {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .guide-list li:last-child {
            border-bottom: none;
        }

        .guide-list .guide-num {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            background-color: var(--brand-primary-light);
            color: var(--brand-primary);
            font-size: 15px;
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .guide-list p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin: 0;
        }

        /* FAQ */
        .faq-section {
            background-color: var(--brand-bg);
        }

        .accordion-custom .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: 8px !important;
            margin-bottom: 12px;
            overflow: hidden;
            background-color: #ffffff;
            box-shadow: var(--shadow-sm);
        }

        .accordion-custom .accordion-item:last-child {
            margin-bottom: 0;
        }

        .accordion-custom .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            padding: 18px 22px;
            background-color: #ffffff;
            transition: all var(--transition-fast);
            border: none;
            box-shadow: none;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background-color: var(--brand-bg);
            color: var(--brand-primary);
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.15);
            outline: none;
        }

        .accordion-custom .accordion-button::after {
            transition: transform var(--transition-fast);
        }

        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }

        .accordion-custom .accordion-body {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            padding: 16px 22px 22px;
            background-color: #ffffff;
        }

        /* CTA */
        .cta-section {
            background-color: var(--brand-dark);
            text-align: center;
            padding-top: 72px;
            padding-bottom: 72px;
        }

        .cta-section h2 {
            font-size: 26px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
            line-height: 1.35;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 24px;
            line-height: 1.7;
        }

        /* 页脚 */
        .footer-main {
            background-color: var(--brand-footer);
            color: #A0AEC0;
            padding-top: 60px;
            padding-bottom: 24px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
            transition: color var(--transition-fast);
        }

        .footer-brand:hover {
            color: #ffffff;
        }

        .footer-brand .brand-icon {
            width: 30px;
            height: 30px;
            background-color: var(--brand-primary);
            color: #ffffff;
            font-size: 14px;
            font-weight: 700;
            border-radius: 5px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .footer-main p {
            font-size: 13px;
            color: #A0AEC0;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .footer-heading {
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
        }

        .footer-main ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-main ul li {
            margin-bottom: 8px;
        }

        .footer-main ul li a {
            font-size: 13px;
            color: #A0AEC0;
            transition: color var(--transition-fast);
        }

        .footer-main ul li a:hover {
            color: #ffffff;
        }

        .footer-divider {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 24px;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 40px;
            padding-top: 20px;
            font-size: 12px;
            color: #A0AEC0;
        }

        .footer-divider a {
            color: #A0AEC0;
            font-size: 12px;
            transition: color var(--transition-fast);
        }

        .footer-divider a:hover {
            color: #ffffff;
        }

        /* 响应式 */
        @media (max-width: 1199px) {
            .container {
                padding-left: var(--container-pad-tablet);
                padding-right: var(--container-pad-tablet);
            }

            section {
                padding-top: 64px;
                padding-bottom: 64px;
            }

            .section-title {
                font-size: 24px;
            }
        }

        @media (max-width: 991px) {
            .container {
                padding-left: var(--container-pad-tablet);
                padding-right: var(--container-pad-tablet);
            }

            section {
                padding-top: 56px;
                padding-bottom: 56px;
            }

            .navbar-main .container {
                padding-top: 8px;
                padding-bottom: 8px;
            }

            .navbar-collapse {
                background-color: #ffffff;
                padding: 12px 16px 16px;
                border-radius: 8px;
                box-shadow: var(--shadow-md);
                margin-top: 8px;
            }

            .navbar-nav .nav-link {
                padding: 12px 4px;
                border-bottom: 1px solid var(--border-light);
            }

            .navbar-nav .nav-link::after {
                display: none;
            }

            .navbar-nav .nav-link.active {
                border-left: 3px solid var(--brand-primary);
                padding-left: 12px;
            }

            .navbar-nav .nav-item.ms-lg-2 {
                margin-top: 8px;
            }

            .btn-sm-custom {
                width: 100%;
                text-align: center;
                padding: 10px 16px;
            }

            .page-header-section h1 {
                font-size: 28px;
            }

            .timeline {
                padding-left: 28px;
            }

            .timeline::before {
                left: 8px;
            }

            .timeline-marker {
                left: -28px;
                width: 20px;
                height: 20px;
                border-width: 2px;
                top: 8px;
            }

            .team-comp-row,
            .team-comp-row.reverse {
                flex-direction: column;
                gap: 20px;
            }

            .team-comp-img {
                flex-basis: auto;
                width: 100%;
            }

            .team-comp-img img {
                height: 200px;
            }

            .cta-section {
                padding-top: 56px;
                padding-bottom: 56px;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding-left: var(--container-pad-mobile);
                padding-right: var(--container-pad-mobile);
            }

            section {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }

            .section-title {
                font-size: 22px;
            }

            .page-header-section {
                padding-top: 36px;
                padding-bottom: 36px;
            }

            .page-header-section h1 {
                font-size: 24px;
            }

            .overview-card {
                padding: 18px 16px;
            }

            .overview-number {
                font-size: 22px;
            }

            .timeline-card {
                padding: 18px 16px;
            }

            .timeline-card h3 {
                font-size: 16px;
            }

            .topbar {
                height: 32px;
                font-size: 11px;
                padding: 0 16px;
            }

            .topbar-right {
                display: none;
            }

            .topbar-right a:first-child {
                display: inline;
            }

            .topbar-right {
                display: block;
            }

            .topbar-right a:nth-child(n+2) {
                display: none;
            }

            .footer-divider {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }

            .footer-main {
                padding-top: 40px;
            }

            .footer-divider {
                margin-top: 28px;
            }
        }

        @media (max-width: 575px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .section-title {
                font-size: 20px;
            }

            .page-header-section h1 {
                font-size: 22px;
            }

            .timeline {
                padding-left: 0;
            }

            .timeline::before {
                display: none;
            }

            .timeline-marker {
                display: none;
            }

            .timeline-date {
                font-size: 12px;
                padding: 2px 10px;
            }

            .timeline-card {
                padding: 16px 14px;
            }

            .depth-analysis-section p {
                font-size: 14px;
            }

            .cta-section h2 {
                font-size: 22px;
            }

            .guide-list li {
                gap: 10px;
                padding: 14px 0;
            }

            .guide-list .guide-num {
                width: 30px;
                height: 30px;
                font-size: 13px;
            }

            .accordion-custom .accordion-button {
                font-size: 14px;
                padding: 14px 16px;
            }

            .accordion-custom .accordion-body {
                font-size: 14px;
                padding: 12px 16px 18px;
            }
        }

/* roulang page: category7 */
:root {
            --brand-primary: #2B6CB0;
            --brand-primary-hover: #2C5282;
            --brand-primary-light: rgba(43, 108, 176, 0.08);
            --brand-primary-border: rgba(43, 108, 176, 0.3);
            --brand-accent: #F56500;
            --brand-accent-light: #ED8936;
            --brand-dark: #1A2B4A;
            --brand-footer: #1A202C;
            --brand-bg: #F7FAFC;
            --brand-bg-alt: #EDF2F7;
            --text-heading: #1A202C;
            --text-body: #4A5568;
            --text-muted: #718096;
            --text-weak: #A0AEC0;
            --border-light: #E2E8F0;
            --border-mid: #CBD5E0;
            --shadow-sm: 0 2px 8px rgba(26, 32, 44, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 32, 44, 0.08);
            --shadow-lg: 0 8px 24px rgba(26, 32, 44, 0.10);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 5px;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacing-section: 72px;
            --spacing-section-mobile: 48px;
            --container-pad-desktop: 48px;
            --container-pad-tablet: 32px;
            --container-pad-mobile: 20px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-body);
            background-color: #ffffff;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--brand-primary-hover);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: var(--container-pad-desktop);
            padding-right: var(--container-pad-desktop);
        }

        section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        .section-bg-alt {
            background-color: var(--brand-bg);
        }

        .section-bg-white {
            background-color: #ffffff;
        }

        .section-bg-deep {
            background-color: var(--brand-dark);
            color: #ffffff;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-primary);
            background-color: var(--brand-primary-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-body);
            max-width: 680px;
            line-height: 1.8;
        }

        .btn {
            border-radius: var(--radius-btn);
            font-weight: 500;
            font-size: 15px;
            padding: 10px 20px;
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
        }

        .btn:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
        }

        .btn-primary-custom {
            background-color: var(--brand-primary);
            color: #ffffff;
            border: 1px solid var(--brand-primary);
        }

        .btn-primary-custom:hover {
            background-color: var(--brand-primary-hover);
            border-color: var(--brand-primary-hover);
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(43, 108, 176, 0.3);
        }

        .btn-primary-custom:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-outline-custom {
            background-color: transparent;
            color: var(--brand-primary);
            border: 1px solid var(--brand-primary);
        }

        .btn-outline-custom:hover {
            background-color: var(--brand-primary-light);
            color: var(--brand-primary-hover);
            border-color: var(--brand-primary);
        }

        .btn-accent {
            background-color: var(--brand-accent);
            color: #ffffff;
            border: 1px solid var(--brand-accent);
        }

        .btn-accent:hover {
            background-color: #dd4a00;
            border-color: #dd4a00;
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(245, 101, 0, 0.35);
        }

        .btn-white-outline {
            background-color: transparent;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.5);
        }

        .btn-white-outline:hover {
            background-color: rgba(255, 255, 255, 0.12);
            color: #ffffff;
            border-color: #ffffff;
        }

        .btn-sm-custom {
            padding: 8px 18px;
            font-size: 14px;
        }

        .navbar-top {
            background-color: var(--brand-dark);
            height: 38px;
            display: flex;
            align-items: center;
            font-size: 12px;
            color: #CBD5E0;
        }

        .navbar-top a {
            color: #CBD5E0;
            transition: border-bottom 0.2s ease, color 0.2s ease;
            border-bottom: 1px solid transparent;
        }

        .navbar-top a:hover {
            color: #ffffff;
            border-bottom: 1px solid #ffffff;
        }

        .navbar-main {
            background-color: #ffffff;
            height: 68px;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1020;
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow 0.3s ease;
        }

        .navbar-main.scrolled {
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 21px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: 0.5px;
        }

        .navbar-brand:hover {
            color: var(--brand-primary);
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background-color: var(--brand-primary);
            color: #ffffff;
            font-size: 18px;
            font-weight: 700;
            border-radius: 6px;
        }

        .navbar-main .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-heading);
            padding: 8px 14px !important;
            position: relative;
            transition: color 0.2s ease;
        }

        .navbar-main .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--brand-primary);
            transition: width 0.2s ease;
        }

        .navbar-main .nav-link:hover {
            color: var(--brand-primary);
        }

        .navbar-main .nav-link:hover::after,
        .navbar-main .nav-link.active::after {
            width: 70%;
        }

        .navbar-main .nav-link.active {
            color: var(--brand-primary);
        }

        .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 6px;
            padding: 6px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px rgba(43, 108, 176, 0.3);
            outline: none;
        }

        .navbar-toggler-icon {
            background-image: none;
            display: inline-block;
            width: 20px;
            height: 2px;
            background-color: var(--text-heading);
            position: relative;
        }

        .navbar-toggler-icon::before,
        .navbar-toggler-icon::after {
            content: '';
            position: absolute;
            left: 0;
            width: 20px;
            height: 2px;
            background-color: var(--text-heading);
            transition: transform 0.2s ease;
        }

        .navbar-toggler-icon::before {
            top: -6px;
        }

        .navbar-toggler-icon::after {
            top: 6px;
        }

        .page-header {
            background-color: var(--brand-bg);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border-light);
        }

        .breadcrumb {
            margin-bottom: 16px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .breadcrumb a {
            color: var(--text-muted);
        }

        .breadcrumb a:hover {
            color: var(--brand-primary);
        }

        .breadcrumb-item+.breadcrumb-item::before {
            content: '›';
            color: var(--text-weak);
        }

        .page-header h1 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-heading);
            margin-bottom: 12px;
            line-height: 1.25;
        }

        .page-header .lead {
            font-size: 16px;
            color: var(--text-body);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }

        .filter-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            border: 1px solid var(--border-mid);
            background-color: #ffffff;
            color: var(--text-body);
            transition: all 0.25s ease;
        }

        .filter-btn:hover {
            border-color: var(--brand-primary);
            color: var(--brand-primary);
            background-color: var(--brand-primary-light);
        }

        .filter-btn.active {
            background-color: var(--brand-primary);
            border-color: var(--brand-primary);
            color: #ffffff;
            box-shadow: 0 2px 8px rgba(43, 108, 176, 0.3);
        }

        .filter-btn:focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 2px;
        }

        .resource-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .resource-card {
            background: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }

        .resource-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent));
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .resource-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--brand-primary-border);
        }

        .resource-card:hover::before {
            opacity: 1;
        }

        .resource-card .resource-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 10px;
            font-size: 24px;
            margin-bottom: 16px;
            background-color: var(--brand-primary-light);
            color: var(--brand-primary);
        }

        .resource-card .resource-icon.icon-accent {
            background-color: rgba(245, 101, 0, 0.1);
            color: var(--brand-accent);
        }

        .resource-card .resource-icon.icon-green {
            background-color: rgba(72, 187, 120, 0.12);
            color: #38A169;
        }

        .resource-card .resource-icon.icon-purple {
            background-color: rgba(128, 90, 213, 0.12);
            color: #805AD5;
        }

        .resource-card .resource-icon.icon-teal {
            background-color: rgba(49, 151, 149, 0.12);
            color: #319795;
        }

        .resource-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
            line-height: 1.4;
            transition: color 0.2s ease;
        }

        .resource-card:hover h3 {
            color: var(--brand-primary);
        }

        .resource-card .resource-meta {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .resource-card .resource-desc {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            flex-grow: 1;
            margin-bottom: 16px;
        }

        .resource-card .btn-get {
            align-self: flex-start;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            background-color: var(--brand-primary);
            color: #ffffff;
            border: 1px solid var(--brand-primary);
            transition: all 0.3s ease;
            cursor: pointer;
            text-decoration: none;
        }

        .resource-card .btn-get:hover {
            background-color: var(--brand-primary-hover);
            border-color: var(--brand-primary-hover);
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(43, 108, 176, 0.3);
        }

        .resource-card .btn-get.btn-accent-get {
            background-color: var(--brand-accent);
            border-color: var(--brand-accent);
        }

        .resource-card .btn-get.btn-accent-get:hover {
            background-color: #dd4a00;
            border-color: #dd4a00;
            box-shadow: 0 4px 12px rgba(245, 101, 0, 0.35);
        }

        .resource-card .resource-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 12px;
            background-color: var(--brand-primary-light);
            color: var(--brand-primary);
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .resource-card .resource-tag.tag-accent {
            background-color: rgba(245, 101, 0, 0.1);
            color: var(--brand-accent);
        }

        .resource-card .resource-tag.tag-green {
            background-color: rgba(72, 187, 120, 0.12);
            color: #38A169;
        }

        .resource-card .resource-tag.tag-purple {
            background-color: rgba(128, 90, 213, 0.12);
            color: #805AD5;
        }

        .resource-card .resource-tag.tag-teal {
            background-color: rgba(49, 151, 149, 0.12);
            color: #319795;
        }

        .resource-banner {
            border-radius: var(--radius-card);
            overflow: hidden;
            position: relative;
            background-color: var(--brand-dark);
            color: #ffffff;
            padding: 40px;
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: wrap;
        }

        .resource-banner .banner-text {
            flex: 1;
            min-width: 280px;
        }

        .resource-banner .banner-text h2 {
            font-size: 26px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .resource-banner .banner-text p {
            font-size: 15px;
            color: #CBD5E0;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .resource-banner .banner-image {
            flex: 0 0 180px;
            height: 120px;
            border-radius: 8px;
            overflow: hidden;
        }

        .resource-banner .banner-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .step-item {
            background: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
        }

        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--brand-primary-border);
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: var(--brand-primary);
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .step-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        .deep-content {
            padding: 32px 0;
        }

        .deep-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
        }

        .deep-content h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-heading);
            margin-top: 24px;
            margin-bottom: 10px;
        }

        .deep-content p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-body);
            margin-bottom: 16px;
        }

        .faq-accordion .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease;
        }

        .faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
            box-shadow: var(--shadow-md);
        }

        .faq-accordion .accordion-button {
            background-color: #ffffff;
            color: var(--text-heading);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 20px;
            border: none;
            box-shadow: none;
            transition: color 0.2s ease, background-color 0.2s ease;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background-color: var(--brand-bg);
            color: var(--brand-primary);
            box-shadow: none;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.2);
            border: none;
        }

        .faq-accordion .accordion-button::after {
            background-image: none;
            content: '\F282';
            font-family: 'bootstrap-icons';
            font-size: 16px;
            font-weight: 400;
            transition: transform 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--brand-primary);
        }

        .faq-accordion .accordion-body {
            padding: 16px 20px 20px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-body);
            background-color: #ffffff;
            border-top: 1px solid var(--border-light);
        }

        .cta-section {
            background-color: var(--brand-dark);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            color: #ffffff;
        }

        .cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 16px;
            color: #CBD5E0;
            margin-bottom: 24px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .footer-main {
            background-color: var(--brand-footer);
            color: #A0AEC0;
            padding: 48px 0 0;
            margin-top: 0;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .footer-brand:hover {
            color: #ffffff;
        }

        .footer-brand .brand-icon {
            width: 30px;
            height: 30px;
            font-size: 16px;
        }

        .footer-main p {
            font-size: 14px;
            line-height: 1.7;
            color: #A0AEC0;
        }

        .footer-heading {
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 14px;
        }

        .footer-main ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-main ul li {
            margin-bottom: 8px;
        }

        .footer-main ul li a {
            font-size: 14px;
            color: #A0AEC0;
            transition: color 0.2s ease;
        }

        .footer-main ul li a:hover {
            color: #ffffff;
        }

        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 16px 0;
            margin-top: 32px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: #A0AEC0;
        }

        .footer-divider a {
            color: #A0AEC0;
            transition: color 0.2s ease;
        }

        .footer-divider a:hover {
            color: #ffffff;
        }

        .footer-divider span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        @media (max-width: 1199px) {
            .container {
                padding-left: var(--container-pad-tablet);
                padding-right: var(--container-pad-tablet);
            }
            .resource-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 991px) {
            section {
                padding-top: 56px;
                padding-bottom: 56px;
            }
            .page-header h1 {
                font-size: 28px;
            }
            .navbar-main {
                height: auto;
                min-height: 64px;
                padding: 8px 0;
            }
            .navbar-collapse {
                background-color: #ffffff;
                padding: 16px 20px;
                border-radius: 0 0 12px 12px;
                box-shadow: var(--shadow-md);
                margin-top: 4px;
            }
            .navbar-nav .nav-link {
                padding: 10px 12px !important;
                border-left: 3px solid transparent;
            }
            .navbar-nav .nav-link.active {
                border-left-color: var(--brand-primary);
            }
            .navbar-nav .nav-link::after {
                display: none;
            }
            .resource-banner {
                padding: 28px 24px;
                flex-direction: column;
                text-align: center;
            }
            .resource-banner .banner-image {
                flex: 0 0 auto;
                width: 100%;
                height: 160px;
            }
            .cta-section {
                padding: 36px 24px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
        }

        @media (max-width: 767px) {
            section {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .container {
                padding-left: var(--container-pad-mobile);
                padding-right: var(--container-pad-mobile);
            }
            .page-header {
                padding: 32px 0 28px;
            }
            .page-header h1 {
                font-size: 24px;
            }
            .resource-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .resource-card {
                padding: 20px 18px;
            }
            .steps-list {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .step-item {
                text-align: left;
                display: flex;
                align-items: flex-start;
                gap: 14px;
                padding: 16px;
            }
            .step-num {
                flex-shrink: 0;
                margin-bottom: 0;
            }
            .filter-bar {
                gap: 8px;
            }
            .filter-btn {
                padding: 6px 14px;
                font-size: 13px;
            }
            .footer-divider {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        @media (max-width: 575px) {
            .navbar-top {
                height: 32px;
                font-size: 11px;
            }
            .navbar-top .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .navbar-main {
                min-height: 56px;
            }
            .navbar-brand {
                font-size: 18px;
            }
            .brand-icon {
                width: 28px;
                height: 28px;
                font-size: 15px;
            }
            .page-header h1 {
                font-size: 21px;
            }
            .page-header .lead {
                font-size: 14px;
            }
            .filter-btn {
                padding: 5px 12px;
                font-size: 12px;
            }
            .resource-card h3 {
                font-size: 16px;
            }
            .resource-card .resource-desc {
                font-size: 13px;
            }
            .cta-section h2 {
                font-size: 21px;
            }
            .cta-section p {
                font-size: 14px;
            }
        }