/* roulang page: index */
:root {
            --primary: #0A4A5A;
            --primary-dark: #0A2E3A;
            --primary-light: #E8F3F5;
            --accent: #FF5A36;
            --accent-hover: #E14826;
            --accent-yellow: #F2C94C;
            --bg: #F5F7F8;
            --card: #FFFFFF;
            --text: #1A2E35;
            --text-sub: #5A6F78;
            --text-light: #8AA0A8;
            --border: #E3EAED;
            --radius: 14px;
            --radius-sm: 10px;
            --radius-lg: 20px;
            --shadow: 0 6px 20px rgba(10, 74, 90, 0.06);
            --shadow-hover: 0 12px 32px rgba(10, 74, 90, 0.12);
            --shadow-lg: 0 20px 48px rgba(10, 74, 90, 0.14);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --container: 1200px;
            --section-pad: 72px;
            --section-pad-mobile: 48px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        a:hover {
            color: var(--accent);
        }

        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            outline: none;
            transition: all var(--transition);
        }

        input,
        select,
        textarea {
            font-family: var(--font);
            font-size: 16px;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-pad) 0;
        }

        .section-alt {
            background: var(--card);
        }

        .section-deep {
            background: var(--primary-dark);
            color: #E8F0F2;
        }

        .section-label {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.5px;
            color: var(--accent);
            background: rgba(255, 90, 54, 0.08);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            text-transform: none;
        }

        .section-title {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .section-title.light {
            color: #FFFFFF;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .section-deep .section-desc {
            color: #B8C9CF;
        }

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

        .text-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* Header & Navigation */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }

        .header.scrolled {
            box-shadow: 0 4px 18px rgba(10, 74, 90, 0.08);
        }

        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 18px;
            font-weight: 700;
            line-height: 1;
        }

        .nav-brand-icon svg {
            width: 20px;
            height: 20px;
        }

        .nav-brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-link .nav-label {
            font-size: 11px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.5px;
            display: block;
            line-height: 1;
            margin-bottom: 2px;
        }

        .nav-link .nav-main {
            display: block;
            line-height: 1.2;
        }

        .nav-link:hover,
        .nav-link.active {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-link.active {
            font-weight: 600;
        }

        .nav-arrow {
            width: 14px;
            height: 14px;
            flex-shrink: 0;
            transition: transform var(--transition);
        }

        .nav-item:hover .nav-arrow {
            transform: rotate(180deg);
        }

        .nav-dropdown {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-hover);
            padding: 8px;
            min-width: 200px;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: all var(--transition);
            z-index: 50;
        }

        .nav-item:hover .nav-dropdown {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transform: translateX(-50%) translateY(4px);
        }

        .nav-dropdown a {
            display: block;
            padding: 10px 14px;
            font-size: 14px;
            color: var(--text);
            border-radius: 6px;
            transition: all var(--transition);
        }

        .nav-dropdown a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            letter-spacing: 0.3px;
            white-space: nowrap;
            height: 40px;
            gap: 6px;
        }

        .btn-primary {
            background: var(--accent);
            color: #FFFFFF;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            color: #FFFFFF;
            box-shadow: 0 6px 18px rgba(255, 90, 54, 0.3);
            transform: translateY(-1px);
        }

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

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

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

        .btn-sm {
            padding: 6px 14px;
            font-size: 13px;
            height: 34px;
            border-radius: 8px;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 17px;
            height: 52px;
            border-radius: var(--radius-sm);
        }

        .btn-text {
            background: none;
            color: var(--primary);
            padding: 8px 16px;
            font-size: 14px;
        }

        .btn-text:hover {
            color: var(--accent);
            background: var(--primary-light);
        }

        .nav-toggle {
            display: none;
            background: none;
            padding: 8px;
            border-radius: 8px;
            color: var(--text);
        }

        .nav-toggle svg {
            width: 26px;
            height: 26px;
        }

        /* Hero */
        .hero {
            background: linear-gradient(135deg, #F0F6F7 0%, #E8F3F5 35%, #F5F7F8 70%, #FFF0EC 100%);
            padding: 60px 0 72px;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(10, 74, 90, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 6fr 4fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content {
            max-width: 640px;
        }

        .hero-title {
            font-size: 40px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .hero-title .highlight {
            color: var(--accent);
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 560px;
        }

        .hero-group-hint {
            display: flex;
            align-items: center;
            gap: 10px;
            background: #FFFFFF;
            border: 1px solid var(--border);
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            margin-bottom: 24px;
            box-shadow: var(--shadow);
        }

        .hero-group-hint .label {
            font-size: 14px;
            color: var(--text-sub);
        }

        .hero-group-hint .count {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent);
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .hero-image-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4 / 3;
        }

        .hero-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero-image-badge {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(10, 46, 58, 0.85);
            color: #FFFFFF;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 13px;
            font-weight: 500;
            backdrop-filter: blur(8px);
        }

        /* Cards & Grids */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            position: relative;
        }

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

        .card-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            color: var(--primary);
        }

        .card-icon svg {
            width: 22px;
            height: 22px;
        }

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

        .card-text {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-light);
            margin-top: 12px;
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }

        .badge-accent {
            background: rgba(255, 90, 54, 0.1);
            color: var(--accent);
        }

        .badge-primary {
            background: var(--primary-light);
            color: var(--primary);
        }

        .badge-yellow {
            background: rgba(242, 201, 76, 0.15);
            color: #B8860B;
        }

        .tag {
            display: inline-block;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            border-radius: 6px;
            background: var(--bg);
            color: var(--text-sub);
            border: 1px solid var(--border);
            margin-right: 8px;
            margin-bottom: 8px;
        }

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

        /* Pain Section */
        .pain-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .pain-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

        .pain-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .pain-num {
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 8px;
            letter-spacing: 1px;
        }

        .pain-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

        .pain-text {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* Solution */
        .solution-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .solution-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .solution-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: var(--card);
            padding: 18px 22px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .solution-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }

        .solution-item-num {
            width: 34px;
            height: 34px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--primary);
            color: #FFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
        }

        .solution-item-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
        }

        .solution-item-text {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.65;
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .step-card {
            background: var(--card);
            border-radius: var(--radius);
            padding: 28px 22px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            position: relative;
            transition: all var(--transition);
            text-align: center;
        }

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

        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent);
            color: #FFF;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }

        .step-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }

        .step-text {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        .step-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            border-radius: var(--radius-sm);
            object-fit: cover;
            margin-top: 12px;
        }

        /* Data / Stats */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .stat-item {
            text-align: center;
            background: var(--card);
            border-radius: var(--radius);
            padding: 32px 20px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

        .stat-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 42px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stat-number .unit {
            font-size: 22px;
            font-weight: 600;
        }

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

        /* Deep content */
        .deep-content {
            max-width: 780px;
            margin: 0 auto;
            text-align: left;
        }

        .deep-content p {
            font-size: 16px;
            line-height: 2;
            color: var(--text);
            margin-bottom: 24px;
            text-align: justify;
            letter-spacing: 0.2px;
        }

        .deep-content p:last-child {
            margin-bottom: 0;
        }

        .deep-content .drop-cap::first-letter {
            font-size: 48px;
            font-weight: 700;
            color: var(--accent);
            float: left;
            line-height: 1;
            margin-right: 8px;
            margin-top: 4px;
        }

        .deep-alt {
            background: var(--primary-dark);
            border-radius: var(--radius-lg);
            padding: 48px;
            max-width: 820px;
            margin: 0 auto;
        }

        .deep-alt p {
            color: #D5E3E6;
        }

        .deep-alt .section-title {
            color: #FFFFFF;
        }

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

        .testimonial-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

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

        .testimonial-text {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 20px;
            font-style: italic;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }

        .testimonial-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
        }

        .testimonial-org {
            font-size: 13px;
            color: var(--text-light);
        }

        /* Audience */
        .audience-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
        }

        .audience-item {
            background: var(--card);
            border: 1px solid var(--border);
            padding: 12px 22px;
            border-radius: 30px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition);
        }

        .audience-item:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* Brand intro */
        .brand-intro {
            background: linear-gradient(135deg, #F0F6F7 0%, #FFF 50%, #FFF5F2 100%);
            border-radius: var(--radius-lg);
            padding: 48px;
            border: 1px solid var(--border);
        }

        .brand-intro p {
            font-size: 16px;
            line-height: 2;
            color: var(--text);
            text-align: justify;
        }

        /* News */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 32px;
        }

        .news-item {
            display: flex;
            gap: 24px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 22px 24px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

        .news-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .news-date {
            flex-shrink: 0;
            width: 76px;
            height: 76px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: var(--primary);
        }

        .news-date .day {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.2;
        }

        .news-date .month {
            font-size: 13px;
            font-weight: 500;
        }

        .news-content {
            flex: 1;
        }

        .news-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .news-summary {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 8px;
        }

        .news-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .news-link:hover {
            color: var(--accent-hover);
        }

        .news-more {
            display: flex;
            justify-content: center;
            margin-top: 28px;
        }

        /* Indicators */
        .indicator-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .indicator-item {
            text-align: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 28px 20px;
            transition: all var(--transition);
        }

        .indicator-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }

        .indicator-circle {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            border: 4px solid var(--accent-yellow);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            background: rgba(242, 201, 76, 0.1);
        }

        .indicator-label {
            font-size: 14px;
            color: #B8C9CF;
            font-weight: 500;
        }

        /* Scene cards */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .scene-card {
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

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

        .scene-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }

        .scene-body {
            padding: 20px;
        }

        .scene-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .scene-text {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.65;
        }

        /* Calendar */
        .calendar-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 28px;
        }

        .calendar-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 16px 24px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

        .calendar-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .calendar-date {
            flex-shrink: 0;
            min-width: 64px;
            text-align: center;
            font-weight: 700;
            color: var(--primary);
            font-size: 18px;
        }

        .calendar-info {
            flex: 1;
        }

        .calendar-match {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
        }

        .calendar-time {
            font-size: 13px;
            color: var(--text-light);
        }

        .calendar-status {
            flex-shrink: 0;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
        }

        /* Partners */
        .partners-row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            margin-top: 28px;
        }

        .partner-item {
            background: var(--card);
            border: 1px solid var(--border);
            padding: 16px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            color: var(--text-sub);
            transition: all var(--transition);
        }

        .partner-item:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow);
        }

        /* Knowledge */
        .knowledge-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 28px;
        }

        .knowledge-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

        .knowledge-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .knowledge-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .knowledge-text {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* Venue */
        .venue-scroll {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 28px;
        }

        .venue-card {
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

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

        .venue-img {
            width: 100%;
            aspect-ratio: 3 / 2;
            object-fit: cover;
        }

        .venue-body {
            padding: 18px 20px;
        }

        .venue-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .venue-text {
            font-size: 14px;
            color: var(--text-sub);
        }

        /* FAQ */
        .faq-list {
            margin-top: 28px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 780px;
            margin-left: auto;
            margin-right: auto;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item.open {
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            gap: 16px;
            background: none;
            width: 100%;
            text-align: left;
            transition: all var(--transition);
        }

        .faq-question:hover {
            background: var(--primary-light);
        }

        .faq-arrow {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            transition: transform var(--transition);
            color: var(--text-sub);
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
            padding: 0 24px;
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(255, 90, 54, 0.15);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(242, 201, 76, 0.08);
            pointer-events: none;
        }

        .cta-title {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .cta-desc {
            font-size: 16px;
            color: #D5E3E6;
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.8;
            position: relative;
            z-index: 1;
        }

        .cta-form {
            max-width: 520px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-form input,
        .cta-form textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            font-size: 15px;
            transition: all var(--transition);
            height: 44px;
        }

        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }

        .cta-form input:focus,
        .cta-form textarea:focus {
            outline: none;
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.15);
            box-shadow: 0 0 0 3px rgba(255, 90, 54, 0.2);
        }

        .cta-form textarea {
            resize: vertical;
            min-height: 80px;
        }

        /* Footer */
        .footer {
            background: var(--primary-dark);
            color: #B8C9CF;
            padding: 60px 0 0;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #8AA0A8;
            max-width: 280px;
        }

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

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: #B8C9CF;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .footer-links a:hover {
            color: var(--accent);
        }

        .footer-contact p {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 8px;
            color: #8AA0A8;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: #6A7F88;
        }

        .footer-bottom a {
            color: #8AA0A8;
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        .footer-bottom .separator {
            margin: 0 8px;
            color: #4A5F68;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-image-wrap {
                aspect-ratio: 16 / 9;
                max-width: 600px;
            }

            .hero-content {
                max-width: 100%;
            }

            .grid-4,
            .steps-grid,
            .stats-row,
            .indicator-grid,
            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .pain-list {
                grid-template-columns: repeat(2, 1fr);
            }

            .testimonials-grid {
                grid-template-columns: 1fr;
                max-width: 560px;
                margin-left: auto;
                margin-right: auto;
            }

            .venue-scroll {
                grid-template-columns: repeat(2, 1fr);
            }

            .solution-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .nav {
                height: 60px;
                flex-wrap: wrap;
                gap: 12px;
            }

            .nav-links {
                display: none;
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                bottom: 0;
                background: #FFFFFF;
                flex-direction: column;
                padding: 24px;
                z-index: 99;
                justify-content: flex-start;
                align-items: stretch;
                overflow-y: auto;
                gap: 8px;
                box-shadow: var(--shadow-lg);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-item {
                width: 100%;
            }

            .nav-link {
                justify-content: space-between;
                padding: 14px 16px;
                font-size: 16px;
            }

            .nav-dropdown {
                position: static;
                transform: none;
                opacity: 1;
                visibility: visible;
                pointer-events: auto;
                box-shadow: none;
                border: none;
                background: var(--bg);
                padding: 4px;
                margin-top: 4px;
                display: none;
            }

            .nav-item.dropdown-open .nav-dropdown {
                display: block;
            }

            .nav-item:hover .nav-dropdown {
                transform: none;
            }

            .nav-toggle {
                display: block;
            }

            .nav-actions {
                display: none;
            }

            .nav-actions.mobile-visible {
                display: flex;
                flex-direction: column;
                width: 100%;
                gap: 10px;
            }

            .section {
                padding: var(--section-pad-mobile) 0;
            }

            .section-title {
                font-size: 26px;
            }

            .hero {
                padding: 40px 0 48px;
            }

            .hero-title {
                font-size: 30px;
            }

            .hero-desc {
                font-size: 16px;
            }

            .grid-3,
            .grid-2,
            .grid-4,
            .steps-grid,
            .stats-row,
            .indicator-grid,
            .scene-grid,
            .pain-list,
            .knowledge-list,
            .venue-scroll {
                grid-template-columns: 1fr;
            }

            .container {
                padding: 0 16px;
            }

            .deep-alt {
                padding: 28px 20px;
            }

            .brand-intro {
                padding: 28px 20px;
            }

            .cta-section {
                padding: 36px 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .news-item {
                flex-direction: column;
                gap: 12px;
            }

            .news-date {
                width: auto;
                height: auto;
                flex-direction: row;
                gap: 8px;
                padding: 8px 16px;
                border-radius: 8px;
            }

            .calendar-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .solution-item {
                flex-direction: column;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 26px;
            }

            .hero-actions {
                flex-direction: column;
                width: 100%;
            }

            .hero-actions .btn {
                width: 100%;
            }

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

            .stats-row .stat-number {
                font-size: 32px;
            }

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

            .step-card {
                text-align: left;
            }

            .step-num {
                margin-left: 0;
            }
        }

        /* Helper */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

/* roulang page: category3 */
:root {
            --primary: #0A4A5A;
            --primary-dark: #0A2E3A;
            --primary-light: #E8F3F5;
            --accent: #FF5A36;
            --accent-hover: #E14826;
            --accent-yellow: #F2C94C;
            --bg: #F5F7F8;
            --card: #FFFFFF;
            --text: #1A2E35;
            --text-sub: #5A6F78;
            --text-light: #8AA0A8;
            --border: #E3EAED;
            --radius: 14px;
            --radius-sm: 10px;
            --radius-lg: 20px;
            --shadow: 0 6px 20px rgba(10, 74, 90, 0.06);
            --shadow-hover: 0 12px 32px rgba(10, 74, 90, 0.12);
            --shadow-lg: 0 20px 48px rgba(10, 74, 90, 0.14);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --container: 1200px;
            --section-pad: 72px;
            --section-pad-mobile: 48px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        a:hover {
            color: var(--accent);
        }

        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            outline: none;
            transition: all var(--transition);
        }

        input,
        select,
        textarea {
            font-family: var(--font);
            font-size: 16px;
            outline: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-pad) 0;
        }

        .section-alt {
            background: var(--card);
        }

        .section-deep {
            background: var(--primary-dark);
            color: #E8F0F2;
        }

        .section-label {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.5px;
            color: var(--accent);
            background: rgba(255, 90, 54, 0.08);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .section-title.light {
            color: #FFFFFF;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .section-deep .section-desc {
            color: #B8C9CF;
        }

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

        .text-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }

        .header.scrolled {
            box-shadow: 0 4px 18px rgba(10, 74, 90, 0.08);
        }

        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 18px;
            font-weight: 700;
            line-height: 1;
        }

        .nav-brand-icon svg {
            width: 20px;
            height: 20px;
        }

        .nav-brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-link .nav-label {
            font-size: 11px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.5px;
            display: block;
            line-height: 1;
            margin-bottom: 2px;
        }

        .nav-link .nav-main {
            display: block;
            line-height: 1.2;
        }

        .nav-link:hover,
        .nav-link.active {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-link.active {
            font-weight: 600;
        }

        .nav-arrow {
            width: 14px;
            height: 14px;
            flex-shrink: 0;
            transition: transform var(--transition);
        }

        .nav-item:hover .nav-arrow {
            transform: rotate(180deg);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 20px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
            border: 2px solid transparent;
        }

        .btn-primary {
            background: var(--accent);
            color: #FFFFFF;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            color: #FFFFFF;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(255, 90, 54, 0.25);
        }

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

        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-secondary:hover {
            background: var(--primary-light);
            color: var(--primary);
            transform: translateY(-1px);
        }

        .btn-sm {
            height: 34px;
            padding: 0 14px;
            font-size: 13px;
            border-radius: 8px;
        }

        .btn-lg {
            height: 48px;
            padding: 0 28px;
            font-size: 16px;
            border-radius: 12px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 12px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: var(--text-light);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        .page-header {
            background: linear-gradient(135deg, #E8F3F5 0%, #F5F7F8 100%);
            padding: 56px 0 40px;
            border-bottom: 1px solid var(--border);
        }

        .page-header h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

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

        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

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

        .card {
            background: var(--card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            overflow: hidden;
        }

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

        .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
        }

        .card-body {
            padding: 20px 22px 22px;
        }

        .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(255, 90, 54, 0.08);
            padding: 3px 12px;
            border-radius: 16px;
            margin-bottom: 10px;
        }

        .card-date {
            font-size: 12px;
            color: var(--text-light);
            margin-bottom: 8px;
        }

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

        .card-desc {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

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

        .stat-card {
            background: var(--card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition);
        }

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

        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: 0.5px;
        }

        .stat-number .accent {
            color: var(--accent);
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-sub);
            margin-top: 6px;
            line-height: 1.5;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-cloud .tag {
            display: inline-block;
            font-size: 14px;
            padding: 6px 18px;
            border-radius: 20px;
            background: var(--card);
            color: var(--text-sub);
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: default;
        }

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

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--card);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item.active {
            background: var(--primary-light);
            box-shadow: var(--shadow-hover);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            border: none;
            background: transparent;
            width: 100%;
            text-align: left;
            gap: 12px;
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-arrow {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            transition: transform var(--transition);
            color: var(--text-light);
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        .cta-box {
            background: var(--primary-dark);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            color: #E8F0F2;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 90, 54, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -50%;
            left: -5%;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(242, 201, 76, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-box p {
            font-size: 16px;
            color: #B8C9CF;
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
            position: relative;
            z-index: 1;
        }

        .cta-box .btn {
            position: relative;
            z-index: 1;
        }

        .deep-text {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 2;
            max-width: 860px;
            margin: 0 auto;
        }

        .deep-text p {
            margin-bottom: 20px;
            text-align: justify;
        }

        .deep-text strong {
            color: var(--primary);
            font-weight: 600;
        }

        .list-more {
            text-align: center;
            margin-top: 28px;
        }

        .footer {
            background: var(--primary-dark);
            color: #B8C9CF;
            padding: 56px 0 28px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #B8C9CF;
            max-width: 280px;
        }

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

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #B8C9CF;
            font-size: 14px;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
        }

        .footer-contact {
            font-size: 14px;
            line-height: 1.8;
            color: #B8C9CF;
        }

        .footer-contact p {
            margin-bottom: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            font-size: 13px;
            color: #8AA0A8;
            text-align: center;
        }

        .footer-bottom a {
            color: #B8C9CF;
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        .footer-bottom .separator {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.2);
        }

        @media (max-width: 1024px) {
            .section {
                padding: 56px 0;
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-links {
                gap: 0;
            }
            .nav-link {
                padding: 8px 10px;
                font-size: 14px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-pad-mobile) 0;
            }
            .container {
                padding: 0 16px;
            }
            .section-title {
                font-size: 26px;
            }
            .page-header h1 {
                font-size: 28px;
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .nav {
                height: auto;
                flex-wrap: wrap;
                padding: 12px 0;
                gap: 10px;
            }
            .nav-links {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                padding-bottom: 4px;
            }
            .nav-cta {
                margin-left: auto;
            }
            .nav-link {
                font-size: 13px;
                padding: 6px 10px;
            }
            .nav-link .nav-label {
                font-size: 10px;
            }
            .cta-box {
                padding: 36px 24px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .faq-question {
                font-size: 16px;
                padding: 16px 18px;
            }
            .faq-answer-inner {
                padding: 0 18px 16px;
                font-size: 15px;
            }
            .stat-number {
                font-size: 28px;
            }
        }

        @media (max-width: 480px) {
            .section-title {
                font-size: 22px;
            }
            .page-header h1 {
                font-size: 24px;
            }
            .btn {
                padding: 0 14px;
                font-size: 13px;
                height: 36px;
            }
            .btn-lg {
                padding: 0 20px;
                font-size: 15px;
                height: 44px;
            }
            .nav-brand-text {
                font-size: 18px;
            }
            .nav-cta {
                gap: 6px;
            }
            .nav-cta .btn {
                padding: 0 10px;
                font-size: 12px;
                height: 34px;
            }
            .stat-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0A4A5A;
            --primary-dark: #0A2E3A;
            --primary-light: #E8F3F5;
            --accent: #FF5A36;
            --accent-hover: #E14826;
            --accent-yellow: #F2C94C;
            --bg: #F5F7F8;
            --card: #FFFFFF;
            --text: #1A2E35;
            --text-sub: #5A6F78;
            --text-light: #8AA0A8;
            --border: #E3EAED;
            --radius: 14px;
            --radius-sm: 10px;
            --radius-lg: 20px;
            --shadow: 0 6px 20px rgba(10, 74, 90, 0.06);
            --shadow-hover: 0 12px 32px rgba(10, 74, 90, 0.12);
            --shadow-lg: 0 20px 48px rgba(10, 74, 90, 0.14);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --container: 1200px;
            --section-pad: 72px;
            --section-pad-mobile: 48px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        a:hover {
            color: var(--accent);
        }

        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            outline: none;
            transition: all var(--transition);
        }

        input,
        select,
        textarea {
            font-family: var(--font);
            font-size: 16px;
            outline: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-pad) 0;
        }

        .section-alt {
            background: var(--card);
        }

        .section-deep {
            background: var(--primary-dark);
            color: #E8F0F2;
        }

        .section-label {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.5px;
            color: var(--accent);
            background: rgba(255, 90, 54, 0.08);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .section-title.light {
            color: #FFFFFF;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .section-deep .section-desc {
            color: #B8C9CF;
        }

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

        .text-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* Header & Navigation */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }

        .header.scrolled {
            box-shadow: 0 4px 18px rgba(10, 74, 90, 0.08);
        }

        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 18px;
            font-weight: 700;
            line-height: 1;
            flex-shrink: 0;
        }

        .nav-brand-icon svg {
            width: 20px;
            height: 20px;
        }

        .nav-brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
        }

        .nav-link .nav-label {
            font-size: 11px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.5px;
            display: block;
            line-height: 1;
            margin-bottom: 2px;
        }

        .nav-link .nav-main {
            display: block;
            line-height: 1.2;
        }

        .nav-link:hover,
        .nav-link.active {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-link.active {
            font-weight: 600;
        }

        .nav-arrow {
            width: 14px;
            height: 14px;
            flex-shrink: 0;
            transition: transform var(--transition);
        }

        .nav-item:hover .nav-arrow {
            transform: rotate(180deg);
        }

        .nav-dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 200px;
            background: #FFFFFF;
            border-radius: 12px;
            box-shadow: var(--shadow-hover);
            border: 1px solid var(--border);
            padding: 8px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all var(--transition);
            z-index: 101;
        }

        .nav-item:hover .nav-dropdown,
        .nav-dropdown:hover {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .nav-dropdown a {
            display: block;
            padding: 10px 14px;
            font-size: 14px;
            color: var(--text);
            border-radius: 8px;
            transition: all var(--transition);
        }

        .nav-dropdown a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-dropdown a.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 20px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .btn-primary {
            background: var(--accent);
            color: #FFFFFF;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            color: #FFFFFF;
            transform: translateY(-1px);
        }
        .btn-primary:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-secondary:hover {
            background: var(--primary-light);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .btn-secondary:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            background: var(--primary-light);
            border-radius: 8px;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            cursor: pointer;
            border: none;
        }

        .nav-toggle svg {
            width: 22px;
            height: 22px;
            color: var(--primary);
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            background: var(--primary-dark);
            padding: 32px 0;
            position: relative;
            overflow: hidden;
        }

        .breadcrumb-bar::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(255, 90, 54, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: #B8C9CF;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: #B8C9CF;
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }

        .breadcrumb .sep {
            color: #617A85;
        }
        .breadcrumb .current {
            color: #FFFFFF;
            font-weight: 600;
        }

        .breadcrumb-title-area {
            margin-top: 16px;
            position: relative;
            z-index: 1;
        }

        .breadcrumb-title-area h1 {
            font-size: 36px;
            line-height: 1.3;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }

        .breadcrumb-title-area .subtitle {
            font-size: 17px;
            color: #B8C9CF;
            margin-top: 8px;
            max-width: 600px;
        }

        /* Content Cards */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .content-card {
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .content-card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
        }

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

        .content-card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .content-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .content-card-desc {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 12px;
            flex: 1;
        }

        .content-card-meta {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* Stats */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--card);
            border-radius: var(--radius);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: 0.5px;
        }

        .stat-number .unit {
            font-size: 18px;
            font-weight: 600;
            color: var(--accent);
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-sub);
            margin-top: 8px;
        }

        /* Article */
        .article-block {
            max-width: 820px;
            margin: 0 auto;
        }

        .article-block p {
            margin-bottom: 20px;
            font-size: 16px;
            line-height: 1.9;
            color: var(--text);
            text-align: justify;
        }

        .article-block h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            margin: 28px 0 12px;
            line-height: 1.4;
        }
        .article-block h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin: 20px 0 8px;
            line-height: 1.4;
        }

        /* Tags */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 22px;
            transition: all var(--transition);
            cursor: default;
        }

        .tag-chip:hover {
            background: var(--primary);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        .tag-chip.accent {
            background: rgba(255, 90, 54, 0.08);
            color: var(--accent);
        }
        .tag-chip.accent:hover {
            background: var(--accent);
            color: #FFFFFF;
        }

        .tag-chip.yellow {
            background: rgba(242, 201, 76, 0.15);
            color: #B8860B;
        }
        .tag-chip.yellow:hover {
            background: var(--accent-yellow);
            color: var(--text);
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card);
            border-radius: var(--radius);
            margin-bottom: 12px;
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            list-style: none;
            transition: all var(--transition);
            gap: 16px;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            transition: transform var(--transition);
            color: var(--accent);
        }

        .faq-item[open] summary {
            background: var(--primary-light);
            color: var(--primary);
        }

        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 16px 24px 20px;
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.8;
            border-top: 1px solid var(--border);
        }

        /* CTA */
        .cta-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-lg);
            display: flex;
            gap: 40px;
            align-items: stretch;
            flex-wrap: wrap;
        }

        .cta-info {
            flex: 1;
            min-width: 280px;
        }

        .cta-info h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .cta-info p {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .cta-contact {
            display: flex;
            flex-direction: column;
            gap: 6px;
            font-size: 14px;
            color: var(--text-sub);
        }

        .cta-form {
            flex: 1;
            min-width: 280px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .cta-form .form-row {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .cta-form .form-row .form-group {
            flex: 1;
            min-width: 140px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-sub);
            margin-bottom: 4px;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            height: 44px;
            padding: 0 14px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: #FAFCFC;
            font-size: 15px;
            color: var(--text);
            transition: all var(--transition);
        }

        .form-group textarea {
            height: 88px;
            padding: 12px 14px;
            resize: vertical;
            line-height: 1.6;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(10, 74, 90, 0.08);
        }

        .btn-submit {
            height: 44px;
            padding: 0 32px;
            background: var(--accent);
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            align-self: flex-start;
        }
        .btn-submit:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
        }
        .btn-submit:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* Footer */
        .footer {
            background: var(--primary-dark);
            color: #E8F0F2;
            padding: 48px 0 32px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            padding-bottom: 28px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .footer-desc {
            font-size: 14px;
            color: #B8C9CF;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-heading {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 14px;
            color: #B8C9CF;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
        }

        .footer-contact p {
            font-size: 14px;
            color: #B8C9CF;
            margin-bottom: 6px;
            line-height: 1.6;
        }

        .footer-bottom {
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #8AA0A8;
            line-height: 1.8;
        }

        .footer-bottom a {
            color: #8AA0A8;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        .separator {
            margin: 0 6px;
            color: #617A85;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-links {
                gap: 0;
            }
            .nav-link {
                padding: 8px 10px;
                font-size: 14px;
            }
            .nav-cta .btn {
                padding: 0 14px;
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-pad-mobile) 0;
            }
            .section-title {
                font-size: 26px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: #FFFFFF;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 16px 32px rgba(10, 74, 90, 0.1);
                display: none;
                max-height: calc(100vh - 68px);
                overflow-y: auto;
                z-index: 99;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-item {
                width: 100%;
            }
            .nav-link {
                width: 100%;
                justify-content: flex-start;
                padding: 12px 16px;
                font-size: 15px;
            }
            .nav-dropdown {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                box-shadow: none;
                border: none;
                padding: 0 0 0 16px;
                margin: 4px 0;
                display: none;
            }
            .nav-item.dropdown-open .nav-dropdown {
                display: block;
            }
            .nav-dropdown a {
                padding: 10px 16px;
                font-size: 14px;
            }
            .nav-cta {
                width: 100%;
                padding: 12px 16px;
                flex-direction: column;
                gap: 8px;
            }
            .nav-cta .btn {
                width: 100%;
                justify-content: center;
            }
            .cards-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-number {
                font-size: 28px;
            }
            .cta-card {
                padding: 24px;
                flex-direction: column;
                gap: 24px;
            }
            .breadcrumb-title-area h1 {
                font-size: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .section-title {
                font-size: 22px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .stat-card {
                padding: 20px 16px;
            }
            .breadcrumb-title-area h1 {
                font-size: 24px;
            }
            .breadcrumb-title-area .subtitle {
                font-size: 15px;
            }
            .nav-brand-text {
                font-size: 18px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #0A4A5A;
            --primary-dark: #0A2E3A;
            --primary-light: #E8F3F5;
            --accent: #FF5A36;
            --accent-hover: #E14826;
            --accent-yellow: #F2C94C;
            --bg: #F5F7F8;
            --card: #FFFFFF;
            --text: #1A2E35;
            --text-sub: #5A6F78;
            --text-light: #8AA0A8;
            --border: #E3EAED;
            --radius: 14px;
            --radius-sm: 10px;
            --radius-lg: 20px;
            --shadow: 0 6px 20px rgba(10, 74, 90, 0.06);
            --shadow-hover: 0 12px 32px rgba(10, 74, 90, 0.12);
            --shadow-lg: 0 20px 48px rgba(10, 74, 90, 0.14);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --container: 1200px;
            --section-pad: 72px;
            --section-pad-mobile: 48px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        a:hover {
            color: var(--accent);
        }

        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            outline: none;
            transition: all var(--transition);
        }

        input,
        select,
        textarea {
            font-family: var(--font);
            font-size: 16px;
            outline: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-pad) 0;
        }

        .section-alt {
            background: var(--card);
        }

        .section-deep {
            background: var(--primary-dark);
            color: #E8F0F2;
        }

        .section-label {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.5px;
            color: var(--accent);
            background: rgba(255, 90, 54, 0.08);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .section-title.light {
            color: #FFFFFF;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .section-deep .section-desc {
            color: #B8C9CF;
        }

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

        .text-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* Header & Navigation */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }

        .header.scrolled {
            box-shadow: 0 4px 18px rgba(10, 74, 90, 0.08);
        }

        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
        }

        .nav-brand-icon svg {
            width: 20px;
            height: 20px;
        }

        .nav-brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-link .nav-label {
            font-size: 11px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.5px;
            display: block;
            line-height: 1;
            margin-bottom: 2px;
        }

        .nav-link .nav-main {
            display: block;
            line-height: 1.2;
        }

        .nav-link:hover,
        .nav-link.active {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-link.active {
            font-weight: 600;
        }

        .nav-arrow {
            width: 14px;
            height: 14px;
            flex-shrink: 0;
            transition: transform var(--transition);
        }

        .nav-item:hover .nav-arrow {
            transform: rotate(180deg);
        }

        .nav-dropdown {
            position: absolute;
            top: calc(100% + 8px);
            left: 0;
            min-width: 180px;
            background: #FFFFFF;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-hover);
            border: 1px solid var(--border);
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all var(--transition);
            z-index: 200;
            padding: 8px;
        }

        .nav-item:hover .nav-dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .nav-dropdown a {
            display: block;
            padding: 10px 14px;
            font-size: 14px;
            color: var(--text);
            border-radius: 8px;
            transition: all var(--transition);
        }

        .nav-dropdown a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0 22px;
            height: 40px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent);
            color: #FFFFFF;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

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

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary);
            transform: translateY(-1px);
        }

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

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            padding: 8px;
            cursor: pointer;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
            transition: all var(--transition);
        }

        /* Breadcrumb & Category Title */
        .breadcrumb-wrap {
            background: var(--primary-light);
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            padding: 18px 0;
            font-size: 14px;
            color: var(--text-sub);
        }

        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }

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

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

        .breadcrumb .current {
            color: var(--text);
            font-weight: 600;
        }

        .category-header {
            background: var(--primary-light);
            padding: 40px 0 52px;
            border-bottom: 1px solid var(--border);
        }

        .category-header h1 {
            font-size: 36px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .category-header .category-sub {
            font-size: 17px;
            color: var(--text-sub);
            max-width: 640px;
            line-height: 1.8;
        }

        /* Category Overview */
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .overview-text .large-text {
            font-size: 18px;
            line-height: 1.9;
            color: var(--text);
            margin-bottom: 16px;
        }

        .overview-text .normal-text {
            color: var(--text-sub);
            line-height: 1.9;
        }

        .overview-side {
            background: var(--card);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow);
            border-left: 4px solid var(--accent);
        }

        .overview-side h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 14px;
        }

        .overview-side ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .overview-side ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        .overview-side ul li::before {
            content: '';
            display: inline-block;
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
            margin-top: 10px;
            flex-shrink: 0;
        }

        /* News Cards Grid */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .news-card-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--primary-light);
        }

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

        .news-card:hover .news-card-image img {
            transform: scale(1.04);
        }

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

        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }

        .news-date {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 10px;
            border-radius: 6px;
            letter-spacing: 0.3px;
        }

        .news-tag {
            font-size: 12px;
            color: var(--accent);
            font-weight: 500;
        }

        .news-card-title {
            font-size: 18px;
            line-height: 1.4;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: 0.2px;
        }

        .news-card-summary {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
            flex: 1;
            margin-bottom: 16px;
        }

        .btn-readmore {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            background: transparent;
            padding: 6px 0;
            transition: all var(--transition);
        }

        .btn-readmore:hover {
            color: var(--accent-hover);
            gap: 10px;
        }

        .list-more {
            text-align: center;
            margin-top: 36px;
        }

        /* Deep Article */
        .deep-article {
            max-width: 800px;
            margin: 0 auto;
        }

        .deep-article .article-lead {
            font-size: 20px;
            font-weight: 600;
            color: var(--primary-dark);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .deep-article p {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 2;
            margin-bottom: 18px;
            text-align: justify;
        }

        /* Stats Band */
        .stats-band {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-block {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(232, 243, 245, 0.15);
            border-radius: var(--radius);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition);
        }

        .stat-block:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--accent);
        }

        .stat-number {
            font-size: 40px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stat-number .unit {
            font-size: 18px;
            font-weight: 500;
            color: var(--accent-yellow);
            margin-left: 2px;
        }

        .stat-label {
            font-size: 14px;
            color: #B8C9CF;
        }

        /* Tag Cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .tag-item {
            display: inline-block;
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 30px;
            transition: all var(--transition);
        }

        .tag-item:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card);
            border-radius: var(--radius);
            margin-bottom: 12px;
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 24px;
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            background: transparent;
            text-align: left;
            transition: all var(--transition);
            gap: 16px;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            transition: transform var(--transition);
            color: var(--text-light);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition), padding var(--transition);
            background: var(--primary-light);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 16px 24px 20px;
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* CTA */
        .cta-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            box-shadow: var(--shadow-lg);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }

        .cta-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .cta-text p {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .form-group label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
        }

        .form-group input,
        .form-group textarea {
            height: 44px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 0 14px;
            font-size: 15px;
            color: var(--text);
            background: #FBFCFD;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .form-group textarea {
            height: 80px;
            padding-top: 10px;
            resize: vertical;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(10, 74, 90, 0.08);
        }

        /* Footer */
        .footer {
            background: var(--primary-dark);
            color: #E8F0F2;
            padding: 56px 0 0;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(232, 240, 242, 0.15);
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

        .footer-desc {
            font-size: 14px;
            color: #B8C9CF;
            line-height: 1.8;
            max-width: 320px;
        }

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

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: #B8C9CF;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
        }

        .footer-contact p {
            font-size: 14px;
            color: #B8C9CF;
            line-height: 1.8;
            margin-bottom: 6px;
        }

        .footer-bottom {
            padding: 24px 0 32px;
            font-size: 13px;
            color: #8AA0A8;
            text-align: center;
        }

        .footer-bottom p {
            margin-bottom: 4px;
        }

        .footer-bottom a {
            color: #B8C9CF;
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        .separator {
            margin: 0 8px;
            color: #5A6F78;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            .stats-band {
                grid-template-columns: repeat(2, 1fr);
            }

            .overview-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .cta-card {
                grid-template-columns: 1fr;
                padding: 36px 28px;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: #FFFFFF;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                gap: 8px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-hover);
                display: none;
                z-index: 150;
                max-height: calc(100vh - 68px);
                overflow-y: auto;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-item {
                width: 100%;
            }

            .nav-link {
                width: 100%;
                justify-content: flex-start;
            }

            .nav-dropdown {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                box-shadow: none;
                border: none;
                padding-left: 16px;
                display: none;
            }

            .nav-item.dropdown-open .nav-dropdown {
                display: block;
            }

            .nav-item:hover .nav-dropdown {
                display: block;
            }

            .nav-actions {
                gap: 6px;
            }

            .btn {
                padding: 0 14px;
                height: 38px;
                font-size: 13px;
            }

            .section {
                padding: var(--section-pad-mobile) 0;
            }

            .section-title {
                font-size: 26px;
            }

            .news-grid {
                grid-template-columns: 1fr;
            }

            .stats-band {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-number {
                font-size: 32px;
            }

            .form-row {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

            .cta-card {
                padding: 28px 20px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .nav-brand-text {
                font-size: 18px;
            }

            .nav-actions .btn-outline {
                display: none;
            }

            .stats-band {
                grid-template-columns: 1fr;
            }

            .category-header {
                padding: 28px 0 36px;
            }

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

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

            .cta-card {
                padding: 24px 16px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #0A4A5A;
            --primary-dark: #0A2E3A;
            --primary-light: #E8F3F5;
            --accent: #FF5A36;
            --accent-hover: #E14826;
            --accent-yellow: #F2C94C;
            --bg: #F5F7F8;
            --card: #FFFFFF;
            --text: #1A2E35;
            --text-sub: #5A6F78;
            --text-light: #8AA0A8;
            --border: #E3EAED;
            --radius: 14px;
            --radius-sm: 10px;
            --radius-lg: 20px;
            --shadow: 0 6px 20px rgba(10, 74, 90, 0.06);
            --shadow-hover: 0 12px 32px rgba(10, 74, 90, 0.12);
            --shadow-lg: 0 20px 48px rgba(10, 74, 90, 0.14);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --container: 1200px;
            --section-pad: 72px;
            --section-pad-mobile: 48px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            margin: 0;
            padding: 0;
        }

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

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

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

        a:hover {
            color: var(--accent);
        }

        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            outline: none;
            transition: all var(--transition);
        }

        input,
        select,
        textarea {
            font-family: var(--font);
            font-size: 16px;
            outline: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-pad) 0;
        }

        .section-alt {
            background: var(--card);
        }

        .section-deep {
            background: var(--primary-dark);
            color: #E8F0F2;
        }

        .section-label {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.5px;
            color: var(--accent);
            background: rgba(255, 90, 54, 0.08);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            text-transform: none;
        }

        .section-title {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .section-title.light {
            color: #FFFFFF;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .section-deep .section-desc {
            color: #B8C9CF;
        }

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

        .text-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* Header & Navigation */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }

        .header.scrolled {
            box-shadow: 0 4px 18px rgba(10, 74, 90, 0.08);
        }

        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
            position: relative;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 18px;
            font-weight: 700;
            line-height: 1;
        }

        .nav-brand-icon svg {
            width: 20px;
            height: 20px;
        }

        .nav-brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
            background: transparent;
        }

        .nav-link .nav-label {
            font-size: 11px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.5px;
            display: block;
            line-height: 1;
            margin-bottom: 2px;
            pointer-events: none;
        }

        .nav-link .nav-main {
            display: block;
            line-height: 1.2;
            pointer-events: none;
        }

        .nav-link:hover,
        .nav-link.active {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-link.active {
            font-weight: 600;
        }

        .nav-arrow {
            width: 14px;
            height: 14px;
            flex-shrink: 0;
            transition: transform var(--transition);
            pointer-events: none;
        }

        .nav-item.has-dropdown:hover .nav-arrow {
            transform: rotate(180deg);
        }

        .nav-dropdown {
            position: absolute;
            top: calc(100% + 8px);
            left: 0;
            min-width: 220px;
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-hover);
            padding: 8px 0;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-8px);
            transition: all var(--transition);
            z-index: 200;
        }

        .nav-item.has-dropdown:hover .nav-dropdown,
        .nav-item.dropdown-open .nav-dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .nav-dropdown a {
            display: block;
            padding: 10px 20px;
            font-size: 14px;
            color: var(--text);
            transition: all var(--transition);
            border-left: 2px solid transparent;
        }

        .nav-dropdown a:hover,
        .nav-dropdown a.active {
            background: var(--primary-light);
            color: var(--primary);
            border-left-color: var(--accent);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 20px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
        }

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

        .btn-primary {
            background: var(--accent);
            color: #FFFFFF;
            box-shadow: 0 4px 14px rgba(255, 90, 54, 0.28);
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            color: #FFFFFF;
            box-shadow: 0 6px 20px rgba(225, 72, 38, 0.35);
            transform: translateY(-1px);
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

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

        .btn-lg {
            height: 48px;
            padding: 0 28px;
            font-size: 16px;
            border-radius: var(--radius-sm);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            cursor: pointer;
            flex-shrink: 0;
            z-index: 300;
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 36px 0 20px;
            background: linear-gradient(135deg, rgba(10, 74, 90, 0.04) 0%, rgba(10, 74, 90, 0.01) 100%);
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 20px;
        }

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

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

        .breadcrumb-sep {
            color: var(--text-light);
            font-size: 12px;
        }

        .breadcrumb-current {
            color: var(--primary);
            font-weight: 600;
            pointer-events: none;
        }

        /* Category Title Area */
        .category-title-wrap {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .category-title-content h1 {
            font-size: 36px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 12px 0;
            letter-spacing: 0.5px;
        }

        .category-title-content .h1-sub {
            font-size: 17px;
            color: var(--text-sub);
            max-width: 680px;
            line-height: 1.8;
            margin: 0;
        }

        /* Stats Strip */
        .stats-strip {
            background: var(--primary);
            padding: 40px 0;
        }

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

        .stat-strip-item {
            text-align: center;
            padding: 8px 12px;
        }

        .stat-strip-number {
            font-size: 40px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.2;
            letter-spacing: 0.5px;
        }

        .stat-strip-label {
            font-size: 14px;
            color: #B8C9CF;
            margin-top: 4px;
            letter-spacing: 0.3px;
        }

        /* Overview Section */
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .overview-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .overview-text p {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .overview-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 16/10;
        }

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

        /* Data Card Grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 32px;
        }

        .data-card {
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border);
        }

        .data-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(10, 74, 90, 0.15);
        }

        .data-card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--primary-light);
            position: relative;
        }

        .data-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .data-card:hover .data-card-img img {
            transform: scale(1.04);
        }

        .data-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 16px;
            letter-spacing: 0.3px;
            z-index: 5;
        }

        .data-card-body {
            padding: 22px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .data-card-date {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }

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

        .data-card-excerpt {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
            flex: 1;
            margin-bottom: 16px;
        }

        .data-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-light);
        }

        .data-card-tag {
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 14px;
            letter-spacing: 0.3px;
        }

        .view-more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            margin-top: 32px;
            transition: all var(--transition);
            text-decoration: none;
        }

        .view-more-link:hover {
            color: var(--accent);
            gap: 10px;
        }

        .view-more-link svg {
            width: 16px;
            height: 16px;
        }

        /* Deep Content */
        .deep-content-section {
            background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFA 100%);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 64px 0;
        }

        .deep-content-grid {
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 48px;
            align-items: start;
        }

        .deep-content-side {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            color: #E8F0F2;
            position: sticky;
            top: 90px;
        }

        .deep-content-side h3 {
            font-size: 20px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 16px;
            line-height: 1.4;
        }

        .deep-content-side p {
            font-size: 14px;
            color: #B8C9CF;
            line-height: 1.8;
            margin: 0 0 12px;
        }

        .deep-content-side .highlight-num {
            font-size: 36px;
            font-weight: 700;
            color: var(--accent-yellow);
            line-height: 1.2;
            margin: 8px 0;
        }

        .deep-content-main h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
            line-height: 1.3;
        }

        .deep-content-main p {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 2;
            margin-bottom: 20px;
            text-align: justify;
            letter-spacing: 0.2px;
        }

        /* Tag Cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }

        .tag-item {
            display: inline-block;
            padding: 8px 18px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 22px;
            font-size: 14px;
            color: var(--text-sub);
            transition: all var(--transition);
            cursor: default;
        }

        .tag-item:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item.active {
            background: var(--primary-light);
            border-color: rgba(10, 74, 90, 0.25);
            box-shadow: var(--shadow);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            gap: 16px;
            background: transparent;
            width: 100%;
            text-align: left;
            transition: all var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            transition: transform var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.9;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 72px 0;
            color: #E8F0F2;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-info h2 {
            font-size: 30px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-info p {
            font-size: 16px;
            color: #B8C9CF;
            line-height: 1.9;
            margin: 0;
        }

        .cta-form-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 32px 30px;
            box-shadow: var(--shadow-lg);
        }

        .cta-form-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 20px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-bottom: 16px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .form-group label {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-sub);
            letter-spacing: 0.3px;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            height: 44px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 0 14px;
            font-size: 15px;
            color: var(--text);
            background: var(--card);
            transition: all var(--transition);
            width: 100%;
        }

        .form-group textarea {
            height: 88px;
            padding: 12px 14px;
            resize: vertical;
            line-height: 1.6;
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(10, 74, 90, 0.1);
        }

        .form-group-full {
            grid-column: 1 / -1;
        }

        .btn-submit {
            width: 100%;
            height: 46px;
            background: var(--accent);
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            letter-spacing: 0.5px;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-submit:hover {
            background: var(--accent-hover);
            box-shadow: 0 6px 20px rgba(255, 90, 54, 0.3);
            transform: translateY(-1px);
        }

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

        /* Footer */
        .footer {
            background: var(--primary-dark);
            color: #B8C9CF;
            padding: 56px 0 0;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #8AA0A8;
            margin: 0;
            max-width: 320px;
        }

        .footer-heading {
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a,
        .footer-contact a {
            color: #B8C9CF;
            font-size: 14px;
            transition: color var(--transition);
        }

        .footer-links a:hover,
        .footer-contact a:hover {
            color: var(--accent);
        }

        .footer-contact p {
            font-size: 14px;
            color: #8AA0A8;
            margin: 0 0 8px;
            line-height: 1.7;
        }

        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: #5A6F78;
        }

        .footer-bottom p {
            margin: 0;
            line-height: 1.8;
        }

        .footer-bottom a {
            color: #B8C9CF;
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        .footer-bottom .separator {
            margin: 0 10px;
            color: rgba(255, 255, 255, 0.2);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }

            .nav-link {
                padding: 8px 12px;
                font-size: 14px;
            }

            .overview-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 22px;
            }

            .stats-strip-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .deep-content-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .deep-content-side {
                position: static;
            }

            .cta-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-pad: var(--section-pad-mobile);
            }

            .header {
                padding: 0;
            }

            .nav {
                height: 60px;
                gap: 12px;
                flex-wrap: nowrap;
            }

            .nav-brand-text {
                font-size: 18px;
            }

            .nav-actions {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-links {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: #FFFFFF;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
                visibility: hidden;
                z-index: 250;
                max-height: calc(100vh - 60px);
                overflow-y: auto;
            }

            .nav-links.mobile-open {
                transform: translateY(0);
                visibility: visible;
            }

            .nav-item {
                width: 100%;
            }

            .nav-link {
                width: 100%;
                justify-content: space-between;
                padding: 12px 14px;
                font-size: 15px;
            }

            .nav-dropdown {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                box-shadow: none;
                border: none;
                border-radius: 0;
                padding: 0 0 0 16px;
                display: none;
                min-width: 100%;
            }

            .nav-item.dropdown-open .nav-dropdown {
                display: block;
            }

            .nav-dropdown a {
                padding: 10px 14px;
                font-size: 14px;
            }

            .section-title {
                font-size: 26px;
            }

            .category-title-content h1 {
                font-size: 28px;
            }

            .category-title-wrap {
                flex-direction: column;
                align-items: flex-start;
            }

            .stats-strip-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
                padding: 0 8px;
            }

            .stat-strip-number {
                font-size: 32px;
            }

            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .data-card-body {
                padding: 18px 20px 20px;
            }

            .form-row {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .cta-form-card {
                padding: 24px 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 28px;
            }

            .footer-bottom {
                font-size: 12px;
            }

            .footer-bottom .separator {
                margin: 0 6px;
            }

            .breadcrumb-section {
                padding: 24px 0 16px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .section {
                padding: 40px 0;
            }

            .section-title {
                font-size: 23px;
            }

            .category-title-content h1 {
                font-size: 24px;
            }

            .stats-strip {
                padding: 28px 0;
            }

            .stats-strip-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-strip-number {
                font-size: 28px;
            }

            .stat-strip-label {
                font-size: 12px;
            }

            .deep-content-main h2 {
                font-size: 22px;
            }

            .deep-content-main p {
                font-size: 15px;
                line-height: 1.9;
            }

            .tag-cloud {
                gap: 8px;
            }

            .tag-item {
                padding: 6px 14px;
                font-size: 13px;
            }

            .faq-question {
                padding: 15px 16px;
                font-size: 15px;
            }

            .faq-answer-inner {
                padding: 0 16px 16px;
            }

            .cta-section {
                padding: 48px 0;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #0A4A5A;
            --primary-dark: #0A2E3A;
            --primary-light: #E8F3F5;
            --accent: #FF5A36;
            --accent-hover: #E14826;
            --accent-yellow: #F2C94C;
            --bg: #F5F7F8;
            --card: #FFFFFF;
            --text: #1A2E35;
            --text-sub: #5A6F78;
            --text-light: #8AA0A8;
            --border: #E3EAED;
            --radius: 14px;
            --radius-sm: 10px;
            --radius-lg: 20px;
            --shadow: 0 6px 20px rgba(10, 74, 90, 0.06);
            --shadow-hover: 0 12px 32px rgba(10, 74, 90, 0.12);
            --shadow-lg: 0 20px 48px rgba(10, 74, 90, 0.14);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --container: 1200px;
            --section-pad: 72px;
            --section-pad-mobile: 48px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        a:hover {
            color: var(--accent);
        }

        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            outline: none;
            transition: all var(--transition);
        }

        input,
        select,
        textarea {
            font-family: var(--font);
            font-size: 16px;
            outline: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-pad) 0;
        }

        .section-alt {
            background: var(--card);
        }

        .section-deep {
            background: var(--primary-dark);
            color: #E8F0F2;
        }

        .section-label {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.5px;
            color: var(--accent);
            background: rgba(255, 90, 54, 0.08);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            text-transform: none;
        }

        .section-title {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .section-title.light {
            color: #FFFFFF;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .section-deep .section-desc {
            color: #B8C9CF;
        }

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

        .text-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* Header & Navigation */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }

        .header.scrolled {
            box-shadow: 0 4px 18px rgba(10, 74, 90, 0.08);
        }

        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 18px;
            font-weight: 700;
            line-height: 1;
        }

        .nav-brand-icon svg {
            width: 20px;
            height: 20px;
        }

        .nav-brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
            flex: 1;
            justify-content: center;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-link .nav-label {
            font-size: 11px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.5px;
            display: block;
            line-height: 1;
            margin-bottom: 2px;
        }

        .nav-link .nav-main {
            display: block;
            line-height: 1.2;
        }

        .nav-link:hover,
        .nav-link.active {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-link.active {
            font-weight: 600;
        }

        .nav-arrow {
            width: 14px;
            height: 14px;
            flex-shrink: 0;
            transition: transform var(--transition);
        }

        .nav-item:hover .nav-arrow {
            transform: rotate(180deg);
        }

        .nav-dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 180px;
            background: #FFFFFF;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            padding: 8px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all var(--transition);
            z-index: 110;
        }

        .nav-item:hover .nav-dropdown,
        .nav-item:focus-within .nav-dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .nav-dropdown a {
            display: block;
            padding: 10px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            border-radius: 8px;
            transition: all var(--transition);
        }

        .nav-dropdown a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-dropdown a.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 40px;
            padding: 0 20px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 10px;
            letter-spacing: 0.3px;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: var(--accent);
            color: #FFFFFF;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

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

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }

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

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            padding: 4px;
            border-radius: 6px;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition);
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            background: var(--primary-light);
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-sub);
            flex-wrap: wrap;
        }

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

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

        .breadcrumb-current {
            color: var(--primary);
            font-weight: 600;
        }

        .breadcrumb-separator {
            color: var(--text-light);
        }

        /* Page title area */
        .page-title-area {
            padding: 28px 0 32px;
            background: var(--card);
            border-bottom: 1px solid var(--border);
        }

        .page-title-area h1 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }

        .page-title-area p {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
        }

        /* Partners overview */
        .partners-overview {
            padding: 40px 0;
            background: var(--bg);
        }

        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .overview-text p {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .overview-text p:last-child {
            margin-bottom: 0;
        }

        .overview-highlights {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .overview-highlight-card {
            background: var(--card);
            border-radius: var(--radius);
            padding: 20px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .overview-highlight-card .highlight-icon {
            font-size: 28px;
            margin-bottom: 8px;
            display: block;
        }

        .overview-highlight-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

        .overview-highlight-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* Partners list */
        .partners-list {
            padding: var(--section-pad) 0;
            background: var(--bg);
        }

        .partners-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-bottom: 32px;
        }

        .partner-card {
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .partner-card-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--primary-light);
            position: relative;
        }

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

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

        .partner-card-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }

        .partner-tag {
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }

        .tag-primary {
            background: var(--primary-light);
            color: var(--primary);
        }

        .tag-accent {
            background: rgba(255, 90, 54, 0.1);
            color: var(--accent);
        }

        .tag-yellow {
            background: rgba(242, 201, 76, 0.18);
            color: #8A6D00;
        }

        .partner-card-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .partner-card-body p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.75;
            flex: 1;
        }

        .list-more {
            text-align: center;
        }

        .btn-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            font-size: 15px;
            font-weight: 600;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: 10px;
            transition: all var(--transition);
        }

        .btn-more:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        /* Stats band */
        .stats-band {
            background: var(--primary-dark);
            padding: 48px 0;
        }

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

        .stat-item {
            padding: 12px;
        }

        .stat-number {
            font-size: 44px;
            font-weight: 700;
            color: var(--accent-yellow);
            line-height: 1.1;
            letter-spacing: 1px;
        }

        .stat-label {
            font-size: 15px;
            color: #B8C9CF;
            margin-top: 8px;
        }

        /* Deep content */
        .deep-content {
            padding: var(--section-pad) 0;
            background: var(--card);
        }

        .deep-content-inner {
            max-width: 860px;
            margin: 0 auto;
        }

        .deep-content-inner p {
            font-size: 16px;
            color: var(--text);
            line-height: 2.1;
            margin-bottom: 20px;
            text-align: justify;
        }

        .deep-content-inner p:last-child {
            margin-bottom: 0;
        }

        .deep-content-inner blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 24px;
            margin: 24px 0;
            background: var(--primary-light);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.9;
        }

        /* Tags aggregation */
        .tags-section {
            padding: var(--section-pad) 0;
            background: var(--bg);
        }

        .tags-wall {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }

        .tag-pill:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .tag-pill .pill-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        /* FAQ */
        .faq-section {
            padding: var(--section-pad) 0;
            background: var(--card);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            background: var(--card);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item.open {
            background: var(--primary-light);
            border-color: rgba(10, 74, 90, 0.2);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            background: transparent;
            text-align: left;
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            width: 100%;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-arrow {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            transition: transform var(--transition);
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer p {
            padding: 0 20px 18px;
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* CTA */
        .cta-section {
            padding: var(--section-pad) 0;
            background: var(--bg);
        }

        .cta-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
            max-width: 1000px;
            margin: 0 auto;
        }

        .cta-info h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .cta-info p {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        .cta-form-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
        }

        .cta-form-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }

        .form-group {
            margin-bottom: 14px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            height: 44px;
            border-radius: 10px;
            border: 1px solid var(--border);
            padding: 0 14px;
            font-size: 15px;
            color: var(--text);
            background: var(--bg);
            transition: all var(--transition);
        }

        .form-group textarea {
            height: auto;
            min-height: 90px;
            padding: 12px 14px;
            resize: vertical;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            background: #FFFFFF;
            box-shadow: 0 0 0 3px rgba(10, 74, 90, 0.1);
        }

        .form-submit {
            width: 100%;
            height: 44px;
            background: var(--accent);
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 600;
            border-radius: 10px;
            letter-spacing: 0.5px;
            transition: all var(--transition);
        }

        .form-submit:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
        }

        .form-submit:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* Footer */
        .footer {
            background: var(--primary-dark);
            color: #E8F0F2;
            padding: 56px 0 20px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .footer-desc {
            font-size: 14px;
            color: #B8C9CF;
            line-height: 1.8;
            max-width: 300px;
        }

        .footer-heading {
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 14px;
            color: #B8C9CF;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
        }

        .footer-contact p {
            font-size: 14px;
            color: #B8C9CF;
            margin-bottom: 6px;
            line-height: 1.6;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 18px;
            font-size: 13px;
            color: #8AA0A8;
            text-align: center;
        }

        .footer-bottom a {
            color: #B8C9CF;
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        .footer-bottom .separator {
            margin: 0 8px;
            color: #5A6F78;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }

            .nav-links {
                gap: 0;
            }

            .nav-link {
                padding: 8px 10px;
                font-size: 14px;
            }

            .overview-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .overview-highlights {
                grid-template-columns: 1fr 1fr;
            }

            .cta-wrapper {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-pad-mobile) 0;
            }

            .section-title {
                font-size: 26px;
            }

            .nav {
                height: 60px;
                gap: 12px;
            }

            .nav-links {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                bottom: 0;
                background: #FFFFFF;
                flex-direction: column;
                align-items: flex-start;
                padding: 20px;
                gap: 8px;
                transform: translateX(-100%);
                transition: transform var(--transition);
                z-index: 99;
                justify-content: flex-start;
                overflow-y: auto;
            }

            .nav-links.mobile-open {
                transform: translateX(0);
            }

            .nav-item {
                width: 100%;
            }

            .nav-link {
                width: 100%;
                padding: 12px 14px;
                font-size: 15px;
                justify-content: space-between;
            }

            .nav-dropdown {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                box-shadow: none;
                padding: 0 14px 8px;
                display: block;
                min-width: auto;
                background: transparent;
            }

            .nav-dropdown a {
                padding: 10px 14px;
                font-size: 14px;
            }

            .nav-cta {
                gap: 8px;
            }

            .btn {
                height: 36px;
                padding: 0 14px;
                font-size: 13px;
            }

            .nav-toggle {
                display: flex;
            }

            .partners-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .overview-highlights {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .stat-number {
                font-size: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .page-title-area h1 {
                font-size: 24px;
            }

            .cta-form-card {
                padding: 20px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .nav-brand-text {
                font-size: 17px;
            }

            .nav-brand-icon {
                width: 30px;
                height: 30px;
            }

            .nav-cta .btn-outline {
                display: none;
            }

            .nav-cta .btn-primary {
                height: 34px;
                padding: 0 12px;
                font-size: 12px;
            }

            .partner-card-body {
                padding: 16px;
            }

            .partner-card-body h3 {
                font-size: 17px;
            }

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

            .page-title-area h1 {
                font-size: 21px;
            }

            .stats-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                font-size: 12px;
            }

            .footer-bottom .separator {
                margin: 0 4px;
            }

            .cta-wrapper {
                padding: 0 8px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0A4A5A;
            --primary-dark: #0A2E3A;
            --primary-light: #E8F3F5;
            --accent: #FF5A36;
            --accent-hover: #E14826;
            --accent-yellow: #F2C94C;
            --bg: #F5F7F8;
            --card: #FFFFFF;
            --text: #1A2E35;
            --text-sub: #5A6F78;
            --text-light: #8AA0A8;
            --border: #E3EAED;
            --radius: 14px;
            --radius-sm: 10px;
            --radius-lg: 20px;
            --shadow: 0 6px 20px rgba(10, 74, 90, 0.06);
            --shadow-hover: 0 12px 32px rgba(10, 74, 90, 0.12);
            --shadow-lg: 0 20px 48px rgba(10, 74, 90, 0.14);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --container: 1200px;
            --section-pad: 72px;
            --section-pad-mobile: 48px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            outline: none;
            transition: all var(--transition);
        }
        input,
        select,
        textarea {
            font-family: var(--font);
            font-size: 16px;
            outline: none;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--section-pad) 0;
        }
        .section-alt {
            background: var(--card);
        }
        .section-deep {
            background: var(--primary-dark);
            color: #E8F0F2;
        }
        .section-label {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.5px;
            color: var(--accent);
            background: rgba(255, 90, 54, 0.08);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .section-title.light {
            color: #FFFFFF;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .section-deep .section-desc {
            color: #B8C9CF;
        }
        .text-center {
            text-align: center;
        }
        .text-center .section-desc {
            margin-left: auto;
            margin-right: auto;
            max-width: 720px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 24px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            line-height: 1.4;
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .btn:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--accent);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 90, 54, 0.28);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-white {
            background: #FFFFFF;
            color: var(--primary);
        }
        .btn-white:hover {
            background: #F0F7F8;
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
        }
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }
        .header.scrolled {
            box-shadow: 0 4px 18px rgba(10, 74, 90, 0.08);
        }
        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
            position: relative;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 18px;
            font-weight: 700;
            line-height: 1;
            flex-shrink: 0;
        }
        .nav-brand-icon svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }
        .nav-brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .nav-item {
            position: relative;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-link .nav-label {
            font-size: 11px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.5px;
            display: block;
            line-height: 1;
            margin-bottom: 2px;
        }
        .nav-link .nav-main {
            display: block;
            line-height: 1.2;
        }
        .nav-link:hover,
        .nav-link.active {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-link.active {
            font-weight: 600;
        }
        .nav-arrow {
            width: 14px;
            height: 14px;
            flex-shrink: 0;
            transition: transform var(--transition);
        }
        .nav-item:hover .nav-arrow,
        .nav-item:focus-within .nav-arrow {
            transform: rotate(180deg);
        }
        .nav-dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 200px;
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-hover);
            padding: 8px 0;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all var(--transition);
            z-index: 101;
        }
        .nav-item:hover .nav-dropdown,
        .nav-item:focus-within .nav-dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .nav-dropdown a {
            display: block;
            padding: 10px 20px;
            font-size: 14px;
            color: var(--text);
            transition: all var(--transition);
            border-left: 3px solid transparent;
        }
        .nav-dropdown a:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-left-color: var(--accent);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-actions .btn {
            padding: 8px 18px;
            font-size: 14px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 36px;
            height: 36px;
            background: transparent;
            border: none;
            align-items: center;
            justify-content: center;
            padding: 6px;
            border-radius: 8px;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .breadcrumb {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-light);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .separator {
            color: var(--text-light);
            opacity: 0.6;
        }
        .breadcrumb .current {
            color: var(--text-sub);
            font-weight: 500;
        }
        .page-header-area {
            background: var(--primary-dark);
            padding: 56px 0 48px;
            color: #E8F0F2;
            position: relative;
            overflow: hidden;
        }
        .page-header-area::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 480px;
            height: 100%;
            background: radial-gradient(circle at 80% 60%, rgba(242, 201, 76, 0.12) 0%, transparent 65%);
            pointer-events: none;
        }
        .page-header-area .breadcrumb a {
            color: #B8C9CF;
        }
        .page-header-area .breadcrumb a:hover {
            color: var(--accent);
        }
        .page-header-area .breadcrumb .current {
            color: #FFFFFF;
        }
        .page-header-area .breadcrumb .separator {
            color: #8AA0A8;
        }
        .page-header-area h1 {
            font-size: 36px;
            line-height: 1.3;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }
        .page-header-area .header-desc {
            font-size: 17px;
            color: #C5D5DA;
            max-width: 680px;
            line-height: 1.8;
            margin: 0;
        }
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .overview-grid .overview-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .overview-grid .overview-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }
        .overview-text h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 16px;
            line-height: 1.4;
        }
        .overview-text p {
            color: var(--text-sub);
            margin-bottom: 16px;
            line-height: 1.8;
        }
        .overview-text .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
        }
        .overview-text .feature-list li {
            padding: 8px 0 8px 28px;
            position: relative;
            color: var(--text-sub);
            line-height: 1.7;
        }
        .overview-text .feature-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 16px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            border: 2px solid rgba(255, 90, 54, 0.25);
        }
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card-item {
            background: var(--card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border);
        }
        .card-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-item .card-image {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--primary-light);
        }
        .card-item .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card-item:hover .card-image img {
            transform: scale(1.04);
        }
        .card-item .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-item .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(255, 90, 54, 0.08);
            padding: 3px 10px;
            border-radius: 16px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .card-item .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin: 0 0 8px;
        }
        .card-item .card-desc {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin: 0 0 12px;
            flex: 1;
        }
        .card-item .card-meta {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: auto;
        }
        .card-item .card-meta .dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--text-light);
            flex-shrink: 0;
        }
        .view-more-wrap {
            text-align: center;
            margin-top: 36px;
        }
        .stats-band {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 48px 36px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            color: #FFFFFF;
        }
        .stat-item {
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--accent-yellow);
            letter-spacing: 1px;
        }
        .stat-item .stat-label {
            font-size: 15px;
            color: #D6E2E5;
            margin-top: 6px;
        }
        .deep-text-section {
            background: var(--card);
            border-radius: var(--radius-lg);
            padding: 48px 56px;
            box-shadow: var(--shadow);
        }
        .deep-text-section h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 20px;
            line-height: 1.35;
        }
        .deep-text-section p {
            color: var(--text-sub);
            line-height: 2;
            margin-bottom: 18px;
            text-align: justify;
        }
        .deep-text-section p:last-child {
            margin-bottom: 0;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tag-cloud .tag {
            display: inline-block;
            padding: 8px 18px;
            font-size: 14px;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 24px;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .tag-cloud .tag:hover {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item.open {
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }
        .faq-item.open .faq-question {
            background: var(--primary-light);
            color: var(--primary);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            transition: all var(--transition);
            background: transparent;
            width: 100%;
            text-align: left;
            line-height: 1.5;
        }
        .faq-question:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            transition: transform var(--transition);
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            padding: 0 20px;
            overflow: hidden;
            transition: all var(--transition);
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }
        .cta-section {
            background: var(--primary-dark);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 75% 25%, rgba(255, 90, 54, 0.15) 0%, transparent 55%);
            pointer-events: none;
        }
        .cta-section .cta-info {
            position: relative;
            z-index: 1;
        }
        .cta-section .cta-info h3 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.35;
            margin: 0 0 14px;
        }
        .cta-section .cta-info p {
            color: #C5D5DA;
            line-height: 1.8;
            margin: 0 0 20px;
        }
        .cta-section .cta-info .cta-contact {
            font-size: 15px;
            color: #D6E2E5;
        }
        .cta-section .cta-info .cta-contact strong {
            color: #FFFFFF;
            font-weight: 600;
        }
        .cta-form-card {
            background: #FFFFFF;
            border-radius: var(--radius);
            padding: 28px;
            position: relative;
            z-index: 1;
            box-shadow: var(--shadow-lg);
        }
        .cta-form-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 16px;
        }
        .form-group {
            margin-bottom: 14px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-sub);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 10px 14px;
            font-size: 15px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            background: #FAFCFC;
            color: var(--text);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            background: #FFFFFF;
            box-shadow: 0 0 0 3px rgba(10, 74, 90, 0.08);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 80px;
        }
        .footer {
            background: var(--primary-dark);
            color: #D6E2E5;
            margin-top: auto;
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 36px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: 14px;
            color: #B8C9CF;
            line-height: 1.8;
            max-width: 300px;
            margin: 0;
        }
        .footer-heading {
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            color: #B8C9CF;
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-contact p {
            font-size: 14px;
            color: #B8C9CF;
            margin: 0 0 8px;
            line-height: 1.6;
        }
        .footer-bottom {
            padding: 20px 0 24px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: #8AA0A8;
            margin: 0;
            line-height: 1.8;
        }
        .footer-bottom a {
            color: #B8C9CF;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-bottom .separator {
            margin: 0 10px;
            color: #5A6F78;
        }
        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-link {
                padding: 8px 10px;
                font-size: 14px;
            }
            .nav-actions .btn {
                padding: 8px 14px;
                font-size: 13px;
            }
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-band {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: #FFFFFF;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 16px 20px;
                box-shadow: var(--shadow-hover);
                border-bottom: 1px solid var(--border);
                display: none;
                z-index: 99;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-item {
                width: 100%;
            }
            .nav-link {
                padding: 12px 16px;
                font-size: 16px;
                width: 100%;
                justify-content: space-between;
            }
            .nav-dropdown {
                position: static;
                background: var(--bg);
                border: none;
                box-shadow: none;
                padding: 0;
                opacity: 1;
                visibility: visible;
                transform: none;
                max-height: 0;
                overflow: hidden;
                transition: max-height var(--transition);
                min-width: auto;
                border-radius: 0;
            }
            .nav-item.dropdown-open .nav-dropdown {
                max-height: 200px;
            }
            .nav-actions {
                gap: 6px;
            }
            .nav-actions .btn {
                padding: 8px 12px;
                font-size: 13px;
            }
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cards-grid {
                grid-template-columns: 1fr;
            }
            .stats-band {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
                padding: 32px 20px;
            }
            .deep-text-section {
                padding: 32px 24px;
            }
            .cta-section {
                grid-template-columns: 1fr;
                gap: 28px;
                padding: 40px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .section {
                padding: var(--section-pad-mobile) 0;
            }
            .page-header-area {
                padding: 40px 0 36px;
            }
            .page-header-area h1 {
                font-size: 28px;
            }
        }
        @media (max-width: 520px) {
            .nav-brand-text {
                font-size: 17px;
                letter-spacing: 0.5px;
            }
            .nav-actions {
                gap: 4px;
            }
            .nav-actions .btn {
                padding: 6px 10px;
                font-size: 12px;
                border-radius: 6px;
            }
            .stats-band {
                grid-template-columns: 1fr;
                gap: 16px;
                padding: 24px 16px;
            }
            .stat-item .stat-number {
                font-size: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section-title {
                font-size: 26px;
            }
            .page-header-area h1 {
                font-size: 24px;
            }
            .cta-section {
                padding: 32px 16px;
            }
            .cta-form-card {
                padding: 18px;
            }
            .deep-text-section {
                padding: 24px 16px;
            }
            .overview-text h3 {
                font-size: 20px;
            }
        }