/* roulang page: index */
:root {
            --brand-deep: #0B6E6E;
            --brand-darker: #0A5C5C;
            --brand-teal: #16A7A0;
            --brand-warm: #F97316;
            --brand-warm-light: #FB8C3D;
            --brand-warm-bg: #FFF3E8;
            --background-mist: #F7FAF9;
            --background-sand: #F0F5F4;
            --card-white: #FFFFFF;
            --text-ink: #1A2E2C;
            --text-heading: #0F3D3B;
            --text-secondary: #5B6F6D;
            --border-soft: #D9E5E3;
            --border-light: #E6EFED;
            --gradient-brand: linear-gradient(135deg, #0B6E6E 0%, #16A7A0 60%, #1FB8AE 100%);
            --gradient-cta: linear-gradient(135deg, #F97316 0%, #FB8C3D 60%, #FDA04F 100%);
            --shadow-card: 0 8px 24px rgba(11, 110, 110, 0.08);
            --shadow-card-hover: 0 16px 40px rgba(11, 110, 110, 0.14);
            --shadow-warm: 0 8px 20px rgba(249, 115, 22, 0.18);
            --radius-sm: 12px;
            --radius-md: 18px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --radius-pill: 999px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", "Helvetica Neue", Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --max-width: 1200px;
            --nav-height: 76px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-ink);
            background-color: var(--background-mist);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-base);
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(249, 115, 22, 0.55);
            outline-offset: 2px;
            border-radius: 4px;
        }
        ul,
        ol {
            list-style: none;
        }

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

        .section {
            padding: 72px 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--background-sand);
        }
        .section-white {
            background-color: var(--background-mist);
        }
        .section-tight {
            padding: 48px 0;
        }

        .section-header {
            max-width: 720px;
            margin: 0 auto 48px;
            text-align: center;
        }
        .section-header .section-tag {
            display: inline-block;
            background: rgba(11, 110, 110, 0.08);
            color: var(--brand-deep);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .section-header h2 {
            font-size: clamp(26px, 3.2vw, 34px);
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.35;
            letter-spacing: -0.3px;
            margin-bottom: 14px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 auto;
            max-width: 640px;
        }

        .text-gradient {
            background: var(--gradient-brand);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--gradient-brand);
            box-shadow: 0 2px 16px rgba(11, 110, 110, 0.28);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }
        .brand-logo:hover {
            opacity: 0.85;
            color: #FFFFFF;
        }
        .brand-logo .logo-mark {
            width: 38px;
            height: 38px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #FFFFFF;
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.16);
            color: #FFFFFF;
        }
        .main-nav a.active {
            background: rgba(255, 255, 255, 0.22);
            color: #FFFFFF;
            font-weight: 600;
        }
        .main-nav .nav-cta {
            background: var(--brand-warm);
            color: #FFFFFF;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-pill);
            box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
            margin-left: 8px;
        }
        .main-nav .nav-cta:hover {
            background: var(--brand-warm-light);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(249, 115, 22, 0.4);
            color: #FFFFFF;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            padding: 10px;
            transition: all var(--transition-fast);
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: #FFFFFF;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.3);
        }
        .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);
        }

        /* Mobile nav drawer */
        .mobile-nav {
            display: none;
            background: var(--gradient-brand);
            padding: 16px 24px 24px;
            box-shadow: 0 16px 32px rgba(11, 110, 110, 0.25);
            border-top: 1px solid rgba(255, 255, 255, 0.18);
        }
        .mobile-nav a {
            display: block;
            color: rgba(255, 255, 255, 0.9);
            font-size: 16px;
            font-weight: 500;
            padding: 12px 16px;
            border-radius: 12px;
            transition: all var(--transition-fast);
        }
        .mobile-nav a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #FFFFFF;
        }
        .mobile-nav a.active {
            background: rgba(255, 255, 255, 0.22);
            color: #FFFFFF;
        }
        .mobile-nav .nav-cta-mobile {
            background: var(--brand-warm);
            color: #FFFFFF;
            text-align: center;
            font-weight: 600;
            margin-top: 8px;
            box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
        }
        .mobile-nav .nav-cta-mobile:hover {
            background: var(--brand-warm-light);
        }

        /* ===== Hero Section ===== */
        .hero-video {
            position: relative;
            min-height: 680px;
            display: flex;
            align-items: center;
            background: var(--gradient-brand);
            overflow: hidden;
            isolation: isolate;
        }
        .hero-video::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(10, 44, 42, 0.88) 0%, rgba(11, 110, 110, 0.72) 40%, rgba(22, 167, 160, 0.42) 100%);
            z-index: 1;
        }
        .hero-video .hero-bg-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
            border-radius: 0;
        }
        .hero-video .hero-overlay-pattern {
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.06) 0%, transparent 45%), radial-gradient(circle at 80% 70%, rgba(249, 115, 22, 0.08) 0%, transparent 40%);
            z-index: 1;
            pointer-events: none;
        }
        .hero-video .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .hero-video .hero-grid {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 48px;
            align-items: center;
        }
        .hero-video .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.28);
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            margin-bottom: 20px;
            backdrop-filter: blur(8px);
        }
        .hero-video h1 {
            font-size: clamp(34px, 4.8vw, 52px);
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.22;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
        }
        .hero-video h1 .highlight-warm {
            color: var(--brand-warm-light);
        }
        .hero-video .hero-subtitle {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 540px;
        }
        .hero-video .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            padding: 14px 30px;
            border-radius: var(--radius-pill);
            transition: all var(--transition-base);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--gradient-cta);
            color: #FFFFFF;
            box-shadow: 0 8px 20px rgba(249, 115, 22, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(249, 115, 22, 0.45);
            color: #FFFFFF;
        }
        .btn-primary:active {
            transform: translateY(0) scale(0.98);
            box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
        }
        .btn-glass {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #FFFFFF;
            backdrop-filter: blur(8px);
        }
        .btn-glass:hover {
            background: rgba(255, 255, 255, 0.25);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .btn-play {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.2);
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #FFFFFF;
            font-size: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-base);
            flex-shrink: 0;
        }
        .btn-play:hover {
            background: rgba(255, 255, 255, 0.35);
            transform: scale(1.08);
            color: #FFFFFF;
        }
        .hero-video .hero-visual {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
            border: 2px solid rgba(255, 255, 255, 0.15);
            aspect-ratio: 16/10;
            background: rgba(0, 0, 0, 0.2);
        }
        .hero-video .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-xl);
        }
        .hero-video .hero-visual .video-play-overlay {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(10, 44, 42, 0.25);
            transition: background var(--transition-base);
            cursor: pointer;
        }
        .hero-video .hero-visual .video-play-overlay:hover {
            background: rgba(10, 44, 42, 0.4);
        }
        .hero-video .hero-visual .video-play-overlay .play-circle {
            width: 72px;
            height: 72px;
            background: rgba(255, 255, 255, 0.92);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-deep);
            font-size: 28px;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
            transition: all var(--transition-base);
        }
        .hero-video .hero-visual .video-play-overlay:hover .play-circle {
            transform: scale(1.1);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
        }
        .hero-video .hero-stats-bar {
            display: flex;
            gap: 28px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .hero-stats-bar .stat-item {
            color: rgba(255, 255, 255, 0.85);
        }
        .hero-stats-bar .stat-item strong {
            display: block;
            font-size: 26px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.2;
        }
        .hero-stats-bar .stat-item span {
            font-size: 13px;
            opacity: 0.8;
        }

        /* ===== Global Coverage Section ===== */
        .coverage-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .coverage-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .coverage-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .coverage-card .coverage-icon {
            width: 52px;
            height: 52px;
            background: var(--brand-warm-bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 22px;
            color: var(--brand-warm);
        }
        .coverage-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 6px;
        }
        .coverage-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== Scene Cards ===== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .scene-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .scene-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .scene-card .scene-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }
        .scene-card .scene-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
            border-radius: 0;
        }
        .scene-card:hover .scene-img img {
            transform: scale(1.06);
        }
        .scene-card .scene-body {
            padding: 22px 24px 24px;
        }
        .scene-card .scene-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .scene-card .scene-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== Localization ===== */
        .local-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .local-content h2 {
            font-size: clamp(26px, 3.2vw, 34px);
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.35;
            margin-bottom: 16px;
        }
        .local-content p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 20px;
        }
        .local-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }
        .local-feature-item {
            background: var(--card-white);
            border-radius: var(--radius-md);
            padding: 16px 18px;
            display: flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 2px 8px rgba(11, 110, 110, 0.05);
            border: 1px solid var(--border-light);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-heading);
        }
        .local-feature-item i {
            color: var(--brand-warm);
            font-size: 16px;
            flex-shrink: 0;
        }
        .local-visual {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
            aspect-ratio: 16/11;
        }
        .local-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ===== Testimonials ===== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .testimonial-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .testimonial-card .quote-icon {
            color: var(--brand-warm);
            font-size: 28px;
            margin-bottom: 12px;
            display: block;
        }
        .testimonial-card p {
            font-size: 15px;
            color: var(--text-ink);
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-card .testimonial-author .avatar {
            width: 42px;
            height: 42px;
            background: var(--brand-deep);
            border-radius: 50%;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }
        .testimonial-card .testimonial-author .author-info strong {
            display: block;
            font-size: 14px;
            color: var(--text-heading);
        }
        .testimonial-card .testimonial-author .author-info span {
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* ===== Method Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 18px;
        }
        .step-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 26px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .step-card .step-num {
            width: 44px;
            height: 44px;
            background: var(--gradient-brand);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            margin: 0 auto 14px;
        }
        .step-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== Data Badges Section ===== */
        .badges-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .badge-stat {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .badge-stat:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .badge-stat .badge-circle {
            width: 86px;
            height: 86px;
            background: var(--brand-warm-bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            border: 3px solid rgba(249, 115, 22, 0.2);
        }
        .badge-stat .badge-circle span {
            font-size: 28px;
            font-weight: 700;
            color: var(--brand-warm);
        }
        .badge-stat h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 4px;
        }
        .badge-stat p {
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* ===== Target Audience ===== */
        .audience-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .audience-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            text-align: center;
        }
        .audience-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .audience-card .audience-icon {
            font-size: 32px;
            color: var(--brand-deep);
            margin-bottom: 12px;
        }
        .audience-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .audience-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ===== Deep Content Areas ===== */
        .deep-content {
            background: var(--card-white);
            border-radius: var(--radius-xl);
            padding: 48px 44px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }
        .deep-content .deep-content-header {
            margin-bottom: 24px;
        }
        .deep-content .deep-content-header h2 {
            font-size: clamp(24px, 2.8vw, 30px);
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.35;
            margin-bottom: 8px;
        }
        .deep-content .deep-content-header .deep-tag {
            display: inline-block;
            background: var(--brand-warm-bg);
            color: var(--brand-warm);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
        }
        .deep-content p {
            font-size: 16px;
            color: var(--text-ink);
            line-height: 1.9;
            margin-bottom: 18px;
        }
        .deep-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 20px 0 10px;
        }
        .deep-content blockquote {
            border-left: 4px solid var(--brand-warm);
            padding: 16px 20px;
            margin: 20px 0;
            background: var(--background-sand);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-size: 15px;
            color: var(--text-heading);
            line-height: 1.8;
            font-style: italic;
        }

        /* ===== News Center ===== */
        .news-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .news-item {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 22px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .news-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .news-item .news-thumb {
            width: 100px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }
        .news-item .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-sm);
        }
        .news-item .news-content {
            flex: 1;
        }
        .news-item .news-date {
            font-size: 12px;
            color: var(--text-secondary);
            margin-bottom: 4px;
        }
        .news-item .news-content h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-item .news-content p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
        }
        .news-item .news-content .read-more {
            font-size: 13px;
            color: var(--brand-warm);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-fast);
        }
        .news-item .news-content .read-more:hover {
            color: var(--brand-warm-light);
            gap: 8px;
        }

        /* ===== Data Metrics Section ===== */
        .metrics-card {
            background: var(--gradient-brand);
            border-radius: var(--radius-xl);
            padding: 44px 40px;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 36px;
            color: #FFFFFF;
            box-shadow: 0 20px 44px rgba(11, 110, 110, 0.3);
        }
        .metrics-card .metrics-text h3 {
            font-size: clamp(22px, 2.6vw, 28px);
            font-weight: 700;
            margin-bottom: 14px;
            line-height: 1.4;
        }
        .metrics-card .metrics-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.8;
        }
        .metrics-card .metrics-numbers {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .metrics-card .metric-item {
            background: rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 18px 16px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .metrics-card .metric-item strong {
            display: block;
            font-size: 28px;
            font-weight: 700;
            color: var(--brand-warm-light);
            margin-bottom: 4px;
        }
        .metrics-card .metric-item span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
        }

        /* ===== Brand Intro ===== */
        .brand-intro {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            gap: 40px;
            align-items: center;
        }
        .brand-intro .brand-intro-img {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
            aspect-ratio: 4/3;
        }
        .brand-intro .brand-intro-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .brand-intro .brand-intro-text h2 {
            font-size: clamp(24px, 2.8vw, 30px);
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            line-height: 1.35;
        }
        .brand-intro .brand-intro-text p {
            font-size: 16px;
            color: var(--text-ink);
            line-height: 1.85;
            margin-bottom: 14px;
        }

        /* ===== Scene Topics ===== */
        .scene-topic-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .scene-topic-card {
            background: var(--card-white);
            border-radius: var(--radius-xl);
            padding: 36px 32px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .scene-topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .scene-topic-card .topic-icon {
            font-size: 32px;
            color: var(--brand-warm);
            margin-bottom: 14px;
        }
        .scene-topic-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }
        .scene-topic-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
        }
        .scene-topic-card ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .scene-topic-card ul li {
            font-size: 14px;
            color: var(--text-ink);
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.6;
        }
        .scene-topic-card ul li i {
            color: var(--brand-teal);
            font-size: 13px;
            flex-shrink: 0;
        }

        /* ===== Coupon Wall ===== */
        .coupon-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .coupon-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 2px dashed var(--border-soft);
            transition: all var(--transition-base);
            position: relative;
        }
        .coupon-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--brand-warm);
        }
        .coupon-card .coupon-amount {
            font-size: 36px;
            font-weight: 700;
            color: var(--brand-warm);
            line-height: 1;
            margin-bottom: 6px;
        }
        .coupon-card .coupon-amount small {
            font-size: 16px;
        }
        .coupon-card .coupon-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 6px;
        }
        .coupon-card .coupon-condition {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .coupon-card .coupon-expiry {
            font-size: 12px;
            color: var(--text-secondary);
            opacity: 0.75;
            margin-bottom: 14px;
        }
        .btn-coupon {
            background: var(--brand-warm);
            color: #FFFFFF;
            font-size: 13px;
            font-weight: 600;
            padding: 8px 20px;
            border-radius: var(--radius-pill);
            display: inline-block;
            transition: all var(--transition-fast);
        }
        .btn-coupon:hover {
            background: var(--brand-warm-light);
            transform: translateY(-1px);
            color: #FFFFFF;
        }

        /* ===== Guarantee Icons Bar ===== */
        .guarantee-bar {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }
        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-heading);
        }
        .guarantee-item i {
            font-size: 22px;
            color: var(--brand-teal);
            flex-shrink: 0;
        }

        /* ===== FAQ Section ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-white);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            box-shadow: 0 2px 8px rgba(11, 110, 110, 0.05);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--border-soft);
        }
        .faq-item .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 22px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            gap: 12px;
            transition: all var(--transition-fast);
            user-select: none;
        }
        .faq-item .faq-question:hover {
            color: var(--brand-deep);
        }
        .faq-item .faq-question .faq-icon {
            color: var(--brand-warm);
            font-size: 16px;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 22px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.75;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 22px 18px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--gradient-brand);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            text-align: center;
            box-shadow: 0 24px 52px rgba(11, 110, 110, 0.35);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 30% 40%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
        }
        .cta-section h2 {
            font-size: clamp(26px, 3.2vw, 34px);
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
            line-height: 1.35;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }
        .cta-section .btn-primary {
            font-size: 16px;
            padding: 16px 38px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0A3A38;
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 28px;
            margin-top: 40px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .site-footer .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 300px;
        }
        .site-footer .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .site-footer .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-col a:hover {
            color: var(--brand-warm-light);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom .footer-legal {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 13px;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--brand-warm-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .coverage-grid,
            .badges-grid,
            .audience-grid,
            .coupon-grid,
            .guarantee-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .scene-grid,
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-video .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-video {
                min-height: auto;
                padding: 60px 0;
            }
            .hero-video .hero-visual {
                max-width: 520px;
            }
            .local-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .brand-intro {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .metrics-card {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .scene-topic-grid {
                grid-template-columns: 1fr;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-nav.open {
                display: block;
            }
            .section {
                padding: 48px 0;
            }
            .coverage-grid,
            .badges-grid,
            .audience-grid,
            .coupon-grid,
            .guarantee-bar {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .scene-grid,
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .hero-video h1 {
                font-size: clamp(28px, 6vw, 36px);
            }
            .hero-video .hero-subtitle {
                font-size: 16px;
            }
            .hero-video .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-stats-bar {
                gap: 16px;
            }
            .deep-content {
                padding: 28px 20px;
            }
            .metrics-card {
                padding: 28px 20px;
            }
            .cta-section {
                padding: 36px 20px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .site-footer .footer-bottom .footer-legal {
                justify-content: center;
            }
            .container {
                padding: 0 16px;
            }
        }
        @media (max-width: 520px) {
            .hero-video h1 {
                font-size: 26px;
            }
            .hero-video .hero-subtitle {
                font-size: 14px;
            }
            .btn {
                font-size: 13px;
                padding: 12px 22px;
            }
            .badge-stat .badge-circle {
                width: 70px;
                height: 70px;
            }
            .badge-stat .badge-circle span {
                font-size: 22px;
            }
            .testimonial-card,
            .scene-card .scene-body,
            .news-item {
                padding: 16px;
            }
            .news-item .news-thumb {
                width: 70px;
                height: 60px;
            }
            .coupon-card .coupon-amount {
                font-size: 28px;
            }
            .site-footer {
                padding: 32px 0 20px;
            }
        }

/* roulang page: category2 */
:root {
            --brand-deep: #0B6E6E;
            --brand-darker: #0A5C5C;
            --brand-teal: #16A7A0;
            --brand-warm: #F97316;
            --brand-warm-light: #FB8C3D;
            --brand-warm-bg: #FFF3E8;
            --background-mist: #F7FAF9;
            --background-sand: #F0F5F4;
            --card-white: #FFFFFF;
            --text-ink: #1A2E2C;
            --text-heading: #0F3D3B;
            --text-secondary: #5B6F6D;
            --border-soft: #D9E5E3;
            --border-light: #E6EFED;
            --gradient-brand: linear-gradient(135deg, #0B6E6E 0%, #16A7A0 60%, #1FB8AE 100%);
            --gradient-cta: linear-gradient(135deg, #F97316 0%, #FB8C3D 60%, #FDA04F 100%);
            --shadow-card: 0 8px 24px rgba(11, 110, 110, 0.08);
            --shadow-card-hover: 0 16px 40px rgba(11, 110, 110, 0.14);
            --shadow-warm: 0 8px 20px rgba(249, 115, 22, 0.18);
            --radius-sm: 12px;
            --radius-md: 18px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --radius-pill: 999px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", "Helvetica Neue", Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --max-width: 1200px;
            --nav-height: 76px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-ink);
            background-color: var(--background-mist);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-base);
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(249, 115, 22, 0.55);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 72px 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--background-sand);
        }
        .section-white {
            background-color: var(--background-mist);
        }
        .section-tight {
            padding: 48px 0;
        }
        .section-header {
            max-width: 720px;
            margin: 0 auto 48px;
            text-align: center;
        }
        .section-header .section-tag {
            display: inline-block;
            background: rgba(11, 110, 110, 0.08);
            color: var(--brand-deep);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .section-header h2 {
            font-size: clamp(26px, 3.2vw, 34px);
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.35;
            letter-spacing: -0.3px;
            margin-bottom: 14px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 auto;
            max-width: 640px;
        }
        .text-gradient {
            background: var(--gradient-brand);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--gradient-brand);
            box-shadow: 0 2px 16px rgba(11, 110, 110, 0.28);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }
        .brand-logo:hover {
            opacity: 0.85;
            color: #FFFFFF;
        }
        .brand-logo .logo-mark {
            width: 38px;
            height: 38px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #FFFFFF;
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            border-radius: var(--radius-pill);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.16);
            color: #FFFFFF;
        }
        .main-nav a.active {
            background: rgba(255, 255, 255, 0.22);
            color: #FFFFFF;
            font-weight: 600;
        }
        .main-nav .nav-cta {
            background: var(--brand-warm);
            color: #FFFFFF;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: var(--radius-pill);
            box-shadow: var(--shadow-warm);
        }
        .main-nav .nav-cta:hover {
            background: var(--brand-warm-light);
            color: #FFFFFF;
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: rgba(255, 255, 255, 0.18);
            border-radius: 8px;
            padding: 10px;
            cursor: pointer;
            transition: background var(--transition-fast);
        }
        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.28);
        }
        .mobile-toggle span {
            width: 22px;
            height: 2px;
            background: #FFFFFF;
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        .mobile-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .mobile-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-pill);
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
            transition: all var(--transition-base);
            cursor: pointer;
            text-align: center;
        }
        .btn-primary {
            background: var(--gradient-brand);
            color: #FFFFFF;
            box-shadow: 0 8px 20px rgba(11, 110, 110, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(11, 110, 110, 0.32);
            color: #FFFFFF;
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .btn-warm {
            background: var(--gradient-cta);
            color: #FFFFFF;
            box-shadow: var(--shadow-warm);
        }
        .btn-warm:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(249, 115, 22, 0.28);
            color: #FFFFFF;
        }
        .btn-warm:active {
            transform: scale(0.97);
        }
        .btn-outline {
            background: transparent;
            color: var(--brand-deep);
            border: 2px solid var(--brand-deep);
        }
        .btn-outline:hover {
            background: var(--brand-deep);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }

        /* Category Hero */
        .category-hero {
            background: var(--gradient-brand);
            padding: 72px 0 64px;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: #FFFFFF;
        }
        .breadcrumb i {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.5);
        }
        .category-hero h1 {
            font-size: clamp(34px, 5vw, 46px);
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            color: #FFFFFF;
        }
        .category-hero .hero-subtitle {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.88);
            max-width: 680px;
            line-height: 1.8;
        }

        /* Filter / Search */
        .filter-bar {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 24px 28px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            margin-top: -36px;
            position: relative;
            z-index: 5;
            border: 1px solid var(--border-light);
        }
        .filter-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            flex: 1;
            min-width: 240px;
        }
        .filter-chip {
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--background-mist);
            border: 1px solid var(--border-soft);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .filter-chip:hover {
            border-color: var(--brand-teal);
            color: var(--brand-deep);
            background: rgba(11, 110, 110, 0.06);
        }
        .filter-chip.active {
            background: var(--brand-deep);
            color: #FFFFFF;
            border-color: var(--brand-deep);
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--background-mist);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-pill);
            padding: 0 16px;
            min-width: 200px;
            flex: 0 1 260px;
        }
        .search-box i {
            color: var(--text-secondary);
            font-size: 14px;
        }
        .search-box input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 10px 0;
            font-size: 14px;
            color: var(--text-ink);
            font-family: var(--font-family);
            outline: none;
        }
        .search-box input::placeholder {
            color: var(--text-secondary);
            font-size: 14px;
        }

        /* Cards Grid */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 40px;
        }
        .course-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border-light);
        }
        .course-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
        }
        .course-card .card-image {
            position: relative;
            height: 200px;
            overflow: hidden;
            border-radius: 0;
        }
        .course-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-slow);
        }
        .course-card:hover .card-image img {
            transform: scale(1.05);
        }
        .course-card .card-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--brand-warm);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            z-index: 2;
        }
        .course-card .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .course-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .course-card .card-meta i {
            font-size: 12px;
            color: var(--brand-teal);
        }
        .course-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .course-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }
        .course-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-deep);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast);
        }
        .course-card .card-link:hover {
            color: var(--brand-warm);
            gap: 10px;
        }

        /* Data Badges */
        .badge-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }
        .data-badge {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .data-badge:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .data-badge .badge-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--brand-warm-bg);
            color: var(--brand-warm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin: 0 auto 14px;
        }
        .data-badge .badge-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .data-badge .badge-label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* Deep Content */
        .deep-content {
            background: var(--card-white);
            border-radius: var(--radius-xl);
            padding: 48px 52px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            max-width: 900px;
            margin: 0 auto;
        }
        .deep-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 20px;
            line-height: 1.4;
        }
        .deep-content p {
            font-size: 16px;
            color: var(--text-ink);
            line-height: 1.9;
            margin-bottom: 18px;
            text-align: justify;
        }

        /* Hot Picks */
        .hot-picks {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 40px;
        }
        .hot-pick-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--card-white);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .hot-pick-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .hot-pick-item .pick-rank {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--brand-warm-bg);
            color: var(--brand-warm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }
        .hot-pick-item .pick-info h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 4px;
        }
        .hot-pick-item .pick-info p {
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-white);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            box-shadow: 0 2px 8px rgba(11, 110, 110, 0.05);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--brand-teal);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            text-align: left;
            background: none;
            cursor: pointer;
            gap: 16px;
        }
        .faq-question i {
            font-size: 14px;
            color: var(--brand-teal);
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 22px;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* CTA Section */
        .cta-band {
            background: var(--gradient-brand);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            text-align: center;
            color: #FFFFFF;
            box-shadow: 0 16px 40px rgba(11, 110, 110, 0.25);
            position: relative;
            overflow: hidden;
        }
        .cta-band::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-band h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }
        .cta-band p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.88);
            max-width: 560px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 1;
        }
        .cta-band .btn {
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .site-footer {
            background: #0A3A3A;
            color: rgba(255, 255, 255, 0.85);
            padding: 64px 0 0;
            margin-top: 72px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }
        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.75);
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 10px;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--brand-warm-light);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-legal {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .footer-legal a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-legal a:hover {
            color: var(--brand-warm-light);
        }

        /* Responsive */
        @media (max-width: 992px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 22px;
            }
            .badge-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .hot-picks {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .category-hero {
                padding: 56px 0 48px;
            }
            .mobile-toggle {
                display: flex;
            }
            .main-nav {
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--gradient-brand);
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 16px 24px;
                box-shadow: 0 12px 24px rgba(11, 110, 110, 0.3);
                border-bottom: 1px solid rgba(255, 255, 255, 0.18);
                display: none;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 16px;
            }
            .main-nav .nav-cta {
                text-align: center;
                justify-content: center;
                margin-top: 8px;
            }
            .cards-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .deep-content {
                padding: 32px 24px;
            }
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
                padding: 20px;
                margin-top: -28px;
            }
            .search-box {
                min-width: 100%;
            }
            .cta-band {
                padding: 40px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-legal {
                justify-content: center;
            }
            .badge-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
        }
        @media (max-width: 520px) {
            .badge-grid {
                grid-template-columns: 1fr;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .brand-logo .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .section-header h2 {
                font-size: 24px;
            }
        }

/* roulang page: category1 */
:root {
            --brand-deep: #0B6E6E;
            --brand-darker: #0A5C5C;
            --brand-teal: #16A7A0;
            --brand-warm: #F97316;
            --brand-warm-light: #FB8C3D;
            --brand-warm-bg: #FFF3E8;
            --background-mist: #F7FAF9;
            --background-sand: #F0F5F4;
            --card-white: #FFFFFF;
            --text-ink: #1A2E2C;
            --text-heading: #0F3D3B;
            --text-secondary: #5B6F6D;
            --border-soft: #D9E5E3;
            --border-light: #E6EFED;
            --gradient-brand: linear-gradient(135deg, #0B6E6E 0%, #16A7A0 60%, #1FB8AE 100%);
            --gradient-cta: linear-gradient(135deg, #F97316 0%, #FB8C3D 60%, #FDA04F 100%);
            --shadow-card: 0 8px 24px rgba(11, 110, 110, 0.08);
            --shadow-card-hover: 0 16px 40px rgba(11, 110, 110, 0.14);
            --shadow-warm: 0 8px 20px rgba(249, 115, 22, 0.18);
            --radius-sm: 12px;
            --radius-md: 18px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --radius-pill: 999px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", "Helvetica Neue", Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --max-width: 1200px;
            --nav-height: 76px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-ink);
            background-color: var(--background-mist);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 3px solid rgba(249, 115, 22, 0.55);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        .section {
            padding: 72px 0;
            position: relative;
        }

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

        .section-white {
            background-color: var(--background-mist);
        }

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

        .section-header {
            max-width: 720px;
            margin: 0 auto 48px;
            text-align: center;
        }

        .section-header .section-tag {
            display: inline-block;
            background: rgba(11, 110, 110, 0.08);
            color: var(--brand-deep);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .section-header h2 {
            font-size: clamp(26px, 3.2vw, 34px);
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.35;
            letter-spacing: -0.3px;
            margin-bottom: 14px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 auto;
            max-width: 640px;
        }

        .text-gradient {
            background: var(--gradient-brand);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--gradient-brand);
            box-shadow: 0 2px 16px rgba(11, 110, 110, 0.28);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }

        .brand-logo:hover {
            opacity: 0.85;
            color: #FFFFFF;
        }

        .brand-logo .logo-mark {
            width: 38px;
            height: 38px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #FFFFFF;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            border-radius: var(--radius-pill);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #FFFFFF;
        }

        .main-nav a.active {
            background: rgba(255, 255, 255, 0.22);
            color: #FFFFFF;
            font-weight: 600;
        }

        .main-nav .nav-cta {
            background: var(--brand-warm);
            color: #FFFFFF;
            font-weight: 600;
            padding: 10px 20px;
            margin-left: 6px;
            box-shadow: var(--shadow-warm);
        }

        .main-nav .nav-cta:hover {
            background: var(--brand-warm-light);
            color: #FFFFFF;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            padding: 8px;
            border-radius: var(--radius-sm);
        }

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

        /* Breadcrumb */
        .breadcrumb {
            background: var(--background-sand);
            padding: 16px 0;
            border-bottom: 1px solid var(--border-light);
        }

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

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

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

        .breadcrumb .sep {
            color: var(--border-soft);
        }

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

        /* Category Hero */
        .category-hero {
            background: var(--gradient-brand);
            padding: 64px 0 72px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            right: -80px;
            top: -60px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(249, 115, 22, 0.18);
            pointer-events: none;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            left: -120px;
            bottom: -100px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
        }

        .category-hero h1 {
            font-size: clamp(32px, 4vw, 44px);
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.3;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        .category-hero .hero-sub {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.8;
            max-width: 680px;
            margin-bottom: 28px;
        }

        .hero-meta-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }

        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.9);
            font-size: 14px;
            font-weight: 500;
        }

        .hero-meta-item i {
            color: var(--brand-warm-light);
            font-size: 16px;
        }

        /* Filter Bar */
        .filter-bar {
            background: var(--card-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 20px 24px;
            margin-top: -36px;
            position: relative;
            z-index: 5;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            border: 1px solid var(--border-light);
        }

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

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

        .filter-select {
            padding: 8px 14px;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-pill);
            background: var(--background-mist);
            font-size: 14px;
            color: var(--text-ink);
            font-family: var(--font-family);
            cursor: pointer;
            transition: all var(--transition-fast);
            min-width: 120px;
        }

        .filter-select:hover {
            border-color: var(--brand-teal);
        }

        .filter-search {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
            background: var(--background-mist);
            border-radius: var(--radius-pill);
            padding: 0 16px;
            border: 1px solid var(--border-soft);
            flex: 1 1 200px;
            max-width: 280px;
        }

        .filter-search i {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .filter-search input {
            width: 100%;
            padding: 10px 0;
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-ink);
            font-family: var(--font-family);
        }

        .filter-search input:focus {
            outline: none;
        }

        /* Event Cards */
        .events-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 28px;
            margin-top: 40px;
        }

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

        .event-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(22, 167, 160, 0.3);
        }

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

        .event-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-slow);
        }

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

        .event-card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, 0.95);
            color: var(--brand-deep);
            font-size: 12px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

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

        .event-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.45;
            margin-bottom: 10px;
        }

        .event-card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }

        .event-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .event-card-meta i {
            font-size: 13px;
            color: var(--brand-teal);
        }

        .event-card-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }

        .event-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
        }

        .event-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-deep);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .event-card-link:hover {
            color: var(--brand-teal);
        }

        .event-card-link i {
            font-size: 13px;
            transition: transform var(--transition-fast);
        }

        .event-card-link:hover i {
            transform: translateX(3px);
        }

        /* Data Badges */
        .data-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
            margin-top: 32px;
        }

        .data-badge {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--card-white);
            border-radius: var(--radius-pill);
            padding: 14px 22px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }

        .data-badge .badge-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--brand-warm);
            line-height: 1;
        }

        .data-badge .badge-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
            line-height: 1.3;
        }

        /* Deep Content */
        .deep-content {
            max-width: 860px;
            margin: 0 auto;
        }

        .deep-content h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.4;
            margin-bottom: 20px;
        }

        .deep-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.5;
            margin-bottom: 12px;
            margin-top: 24px;
        }

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

        .deep-content blockquote {
            background: var(--brand-warm-bg);
            border-left: 4px solid var(--brand-warm);
            padding: 18px 22px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            color: var(--text-heading);
            line-height: 1.7;
            margin: 20px 0;
            font-weight: 500;
        }

        /* Hot Picks */
        .hot-picks {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 24px;
            margin-top: 36px;
        }

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

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

        .hot-card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .hot-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }

        .hot-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .hot-card-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .hot-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            flex: 1;
        }

        .hot-tag {
            display: inline-block;
            background: rgba(249, 115, 22, 0.1);
            color: var(--brand-warm);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            margin-bottom: 10px;
            align-self: flex-start;
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--card-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .faq-question {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
        }

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

        .faq-question i {
            font-size: 14px;
            color: var(--brand-teal);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* CTA */
        .cta-section {
            background: var(--gradient-brand);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            right: -60px;
            top: -60px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }

        .cta-section::after {
            content: '';
            position: absolute;
            left: -80px;
            bottom: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(249, 115, 22, 0.2);
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
            line-height: 1.35;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-pill);
            font-size: 16px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: all var(--transition-base);
            text-decoration: none;
        }

        .btn-primary {
            background: var(--brand-warm);
            color: #FFFFFF;
            box-shadow: var(--shadow-warm);
        }

        .btn-primary:hover {
            background: var(--brand-warm-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(249, 115, 22, 0.3);
            color: #FFFFFF;
        }

        .btn-outline {
            background: transparent;
            color: #FFFFFF;
            border: 2px solid rgba(255, 255, 255, 0.7);
        }

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

        .btn:active {
            transform: scale(0.97);
        }

        /* Footer */
        .site-footer {
            background: #0A3D3B;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
            margin-top: auto;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--brand-warm-light);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 22px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
        }

        .footer-legal {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .footer-legal a {
            color: rgba(255, 255, 255, 0.7);
        }

        .footer-legal a:hover {
            color: var(--brand-warm-light);
        }

        /* Responsive */
        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            .events-grid {
                grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            }

            .hot-picks {
                grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: var(--nav-height);
                right: 0;
                width: 280px;
                flex-direction: column;
                background: var(--gradient-brand);
                padding: 20px;
                border-radius: 0 0 0 var(--radius-lg);
                box-shadow: -8px 16px 32px rgba(11, 110, 110, 0.3);
                transform: translateX(100%);
                transition: transform var(--transition-base);
                gap: 6px;
                align-items: stretch;
            }

            .main-nav.open {
                transform: translateX(0);
            }

            .main-nav a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                width: 100%;
            }

            .main-nav .nav-cta {
                margin-left: 0;
                text-align: center;
                justify-content: center;
            }

            .section {
                padding: 48px 0;
            }

            .category-hero {
                padding: 40px 0 56px;
            }

            .category-hero h1 {
                font-size: 30px;
            }

            .filter-bar {
                margin-top: -24px;
                flex-direction: column;
                align-items: stretch;
            }

            .filter-search {
                max-width: 100%;
                margin-left: 0;
            }

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

            .data-badges {
                gap: 12px;
            }

            .data-badge {
                padding: 10px 16px;
            }

            .data-badge .badge-num {
                font-size: 22px;
            }

            .cta-section {
                padding: 40px 20px;
                border-radius: var(--radius-lg);
            }
        }

        @media (max-width: 576px) {
            .container {
                padding: 0 16px;
            }

            .section {
                padding: 36px 0;
            }

            .section-header {
                margin-bottom: 32px;
            }

            .section-header h2 {
                font-size: 24px;
            }

            .category-hero h1 {
                font-size: 26px;
            }

            .category-hero .hero-sub {
                font-size: 16px;
            }

            .hero-meta-bar {
                gap: 12px;
            }

            .hero-meta-item {
                font-size: 13px;
            }

            .event-card-body {
                padding: 16px 18px 18px;
            }

            .event-card-body h3 {
                font-size: 18px;
            }

            .event-card-desc {
                font-size: 14px;
            }

            .hot-picks {
                grid-template-columns: 1fr;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .footer-legal {
                justify-content: center;
                gap: 10px;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

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

            .deep-content p {
                font-size: 15px;
            }

            .faq-question {
                padding: 14px 18px;
                font-size: 15px;
            }

            .faq-answer {
                padding: 0 18px 14px;
                font-size: 14px;
            }
        }

/* roulang page: category3 */
:root {
            --brand-deep: #0B6E6E;
            --brand-darker: #0A5C5C;
            --brand-teal: #16A7A0;
            --brand-warm: #F97316;
            --brand-warm-light: #FB8C3D;
            --brand-warm-bg: #FFF3E8;
            --background-mist: #F7FAF9;
            --background-sand: #F0F5F4;
            --card-white: #FFFFFF;
            --text-ink: #1A2E2C;
            --text-heading: #0F3D3B;
            --text-secondary: #5B6F6D;
            --border-soft: #D9E5E3;
            --border-light: #E6EFED;
            --gradient-brand: linear-gradient(135deg, #0B6E6E 0%, #16A7A0 60%, #1FB8AE 100%);
            --gradient-cta: linear-gradient(135deg, #F97316 0%, #FB8C3D 60%, #FDA04F 100%);
            --shadow-card: 0 8px 24px rgba(11, 110, 110, 0.08);
            --shadow-card-hover: 0 16px 40px rgba(11, 110, 110, 0.14);
            --shadow-warm: 0 8px 20px rgba(249, 115, 22, 0.18);
            --radius-sm: 12px;
            --radius-md: 18px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --radius-pill: 999px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", "Helvetica Neue", Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --max-width: 1200px;
            --nav-height: 76px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-ink);
            background-color: var(--background-mist);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(249, 115, 22, 0.55);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        .section {
            padding: 72px 0;
            position: relative;
        }

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

        .section-white {
            background-color: var(--background-mist);
        }

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

        .section-header {
            max-width: 720px;
            margin: 0 auto 48px;
            text-align: center;
        }

        .section-header .section-tag {
            display: inline-block;
            background: rgba(11, 110, 110, 0.08);
            color: var(--brand-deep);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .section-header h2 {
            font-size: clamp(26px, 3.2vw, 34px);
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.35;
            letter-spacing: -0.3px;
            margin-bottom: 14px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 auto;
            max-width: 640px;
        }

        .text-gradient {
            background: var(--gradient-brand);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--gradient-brand);
            box-shadow: 0 2px 16px rgba(11, 110, 110, 0.28);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }

        .brand-logo:hover {
            opacity: 0.85;
            color: #FFFFFF;
        }

        .brand-logo .logo-mark {
            width: 38px;
            height: 38px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #FFFFFF;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 10px 16px;
            border-radius: var(--radius-pill);
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.14);
            color: #FFFFFF;
        }

        .main-nav a.active {
            background: rgba(255, 255, 255, 0.22);
            color: #FFFFFF;
            font-weight: 600;
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.3);
        }

        .main-nav .nav-cta {
            background: var(--brand-warm);
            color: #FFFFFF;
            font-weight: 600;
            box-shadow: var(--shadow-warm);
            margin-left: 6px;
        }

        .main-nav .nav-cta:hover {
            background: var(--brand-warm-light);
            box-shadow: 0 10px 24px rgba(249, 115, 22, 0.28);
            transform: translateY(-1px);
            color: #FFFFFF;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            background: rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-sm);
            color: #FFFFFF;
            font-size: 20px;
            align-items: center;
            justify-content: center;
            transition: background var(--transition-fast);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.28);
        }

        /* ===== Category Page Header ===== */
        .category-header {
            padding: 56px 0 40px;
            background: var(--background-sand);
            border-bottom: 1px solid var(--border-soft);
            position: relative;
            overflow: hidden;
        }

        .category-header::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(22, 167, 160, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-header .container {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: flex-start;
            gap: 40px;
            flex-wrap: wrap;
        }

        .category-header-text {
            flex: 1 1 520px;
        }

        .category-header h1 {
            font-size: clamp(30px, 4vw, 42px);
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .category-header h1 .highlight {
            color: var(--brand-deep);
        }

        .category-header .lead {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 680px;
            margin-bottom: 0;
        }

        .category-header-image {
            flex: 0 0 320px;
            max-width: 320px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
            border: 4px solid #FFFFFF;
        }

        .category-header-image img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        /* ===== Cards Grid ===== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

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

        .card-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(11, 110, 110, 0.2);
        }

        .card-image {
            width: 100%;
            height: 200px;
            overflow: hidden;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            position: relative;
        }

        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-slow);
        }

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

        .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(11, 110, 110, 0.88);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            backdrop-filter: blur(4px);
            letter-spacing: 0.3px;
        }

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

        .card-content h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 12px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .card-meta .date {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .card-meta .tag {
            background: rgba(11, 110, 110, 0.08);
            color: var(--brand-deep);
            padding: 3px 10px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 12px;
        }

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

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-deep);
            transition: all var(--transition-fast);
            align-self: flex-start;
        }

        .card-link:hover {
            color: var(--brand-warm);
            gap: 10px;
        }

        /* ===== Data Badges ===== */
        .data-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
            margin-top: 8px;
        }

        .data-badge {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 24px 28px;
            background: var(--card-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            min-width: 160px;
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

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

        .data-badge .number {
            font-size: 32px;
            font-weight: 800;
            background: var(--gradient-cta);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .data-badge .label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
            text-align: center;
        }

        .data-badge.warm {
            background: var(--brand-warm-bg);
            border-color: rgba(249, 115, 22, 0.2);
        }

        .data-badge.warm .number {
            color: var(--brand-warm);
            -webkit-text-fill-color: var(--brand-warm);
        }

        /* ===== Hot Recommendations ===== */
        .hot-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .hot-card {
            background: var(--card-white);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            text-align: left;
        }

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

        .hot-card .hot-icon {
            width: 44px;
            height: 44px;
            background: rgba(11, 110, 110, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--brand-deep);
            margin-bottom: 14px;
        }

        .hot-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .hot-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ===== Deep Content ===== */
        .deep-content {
            background: var(--card-white);
            border-radius: var(--radius-xl);
            padding: 40px 44px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            margin-bottom: 28px;
        }

        .deep-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 18px;
            line-height: 1.4;
        }

        .deep-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--brand-deep);
            margin: 20px 0 10px;
            line-height: 1.4;
        }

        .deep-content p {
            font-size: 16px;
            color: var(--text-ink);
            line-height: 1.85;
            margin-bottom: 14px;
        }

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

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

        .faq-item {
            background: var(--card-white);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            margin-bottom: 14px;
            box-shadow: 0 2px 8px rgba(11, 110, 110, 0.05);
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(11, 110, 110, 0.25);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .faq-question .faq-icon {
            color: var(--brand-warm);
            font-size: 18px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        .faq-answer {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding-left: 28px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--gradient-brand);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            text-align: center;
            box-shadow: 0 20px 48px rgba(11, 110, 110, 0.3);
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.3;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
            max-width: 560px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 1;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-pill);
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition-base);
            letter-spacing: 0.3px;
        }

        .btn-primary {
            background: var(--brand-warm);
            color: #FFFFFF;
            box-shadow: var(--shadow-warm);
        }

        .btn-primary:hover {
            background: var(--brand-warm-light);
            box-shadow: 0 12px 28px rgba(249, 115, 22, 0.35);
            transform: translateY(-2px);
        }

        .btn-outline-light {
            background: transparent;
            color: #FFFFFF;
            box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.6);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.9);
            transform: translateY(-2px);
        }

        .btn:active {
            transform: scale(0.97);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--brand-darker);
            color: rgba(255, 255, 255, 0.85);
            padding: 56px 0 28px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            padding: 5px 0;
            transition: all var(--transition-fast);
        }

        .footer-col a:hover {
            color: #FFFFFF;
            padding-left: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 22px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-legal {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .footer-legal a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition-fast);
            font-size: 13px;
        }

        .footer-legal a:hover {
            color: #FFFFFF;
        }

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

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

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }

            .category-header .container {
                flex-direction: column;
            }

            .category-header-image {
                flex: 0 0 auto;
                max-width: 100%;
                width: 100%;
            }

            .category-header-image img {
                height: 260px;
                width: 100%;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--gradient-brand);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                gap: 4px;
                box-shadow: 0 16px 32px rgba(11, 110, 110, 0.3);
                border-bottom: 1px solid rgba(255, 255, 255, 0.18);
            }

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

            .main-nav a {
                padding: 13px 18px;
                border-radius: var(--radius-sm);
                font-size: 16px;
            }

            .main-nav .nav-cta {
                margin-left: 0;
                text-align: center;
                justify-content: center;
                margin-top: 6px;
            }

            .section {
                padding: 48px 0;
            }

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

            .hot-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .data-badges {
                gap: 12px;
            }

            .data-badge {
                min-width: 120px;
                padding: 18px 20px;
            }

            .data-badge .number {
                font-size: 26px;
            }

            .deep-content {
                padding: 28px 24px;
            }

            .cta-section {
                padding: 40px 24px;
            }

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

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

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

            .category-header .lead {
                font-size: 15px;
            }
        }

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

            .brand-logo {
                font-size: 19px;
                gap: 8px;
            }

            .brand-logo .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }

            .section {
                padding: 36px 0;
            }

            .section-header {
                margin-bottom: 28px;
            }

            .section-header h2 {
                font-size: 23px;
            }

            .card-image {
                height: 160px;
            }

            .card-content {
                padding: 18px 18px 20px;
            }

            .card-content h3 {
                font-size: 17px;
            }

            .deep-content h2 {
                font-size: 20px;
            }

            .faq-item {
                padding: 18px 18px;
            }

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

            .faq-answer {
                font-size: 14px;
                padding-left: 0;
            }

            .cta-section h2 {
                font-size: 24px;
            }

            .btn {
                padding: 12px 24px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }

            .cta-buttons {
                flex-direction: column;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 12px;
            }

            .footer-legal {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

/* roulang page: category5 */
:root {
            --brand-deep: #0B6E6E;
            --brand-darker: #0A5C5C;
            --brand-teal: #16A7A0;
            --brand-warm: #F97316;
            --brand-warm-light: #FB8C3D;
            --brand-warm-bg: #FFF3E8;
            --background-mist: #F7FAF9;
            --background-sand: #F0F5F4;
            --card-white: #FFFFFF;
            --text-ink: #1A2E2C;
            --text-heading: #0F3D3B;
            --text-secondary: #5B6F6D;
            --border-soft: #D9E5E3;
            --border-light: #E6EFED;
            --gradient-brand: linear-gradient(135deg, #0B6E6E 0%, #16A7A0 60%, #1FB8AE 100%);
            --gradient-cta: linear-gradient(135deg, #F97316 0%, #FB8C3D 60%, #FDA04F 100%);
            --shadow-card: 0 8px 24px rgba(11, 110, 110, 0.08);
            --shadow-card-hover: 0 16px 40px rgba(11, 110, 110, 0.14);
            --shadow-warm: 0 8px 20px rgba(249, 115, 22, 0.18);
            --radius-sm: 12px;
            --radius-md: 18px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --radius-pill: 999px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", "Helvetica Neue", Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --max-width: 1200px;
            --nav-height: 76px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-ink);
            background-color: var(--background-mist);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(249, 115, 22, 0.55);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        .section {
            padding: 72px 0;
            position: relative;
        }

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

        .section-white {
            background-color: var(--background-mist);
        }

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

        .section-header {
            max-width: 720px;
            margin: 0 auto 48px;
            text-align: center;
        }

        .section-header .section-tag {
            display: inline-block;
            background: rgba(11, 110, 110, 0.08);
            color: var(--brand-deep);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .section-header h2 {
            font-size: clamp(26px, 3.2vw, 34px);
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.35;
            letter-spacing: -0.3px;
            margin-bottom: 14px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 auto;
            max-width: 640px;
        }

        .text-gradient {
            background: var(--gradient-brand);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--gradient-brand);
            box-shadow: 0 2px 16px rgba(11, 110, 110, 0.28);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }

        .brand-logo:hover {
            opacity: 0.85;
            color: #FFFFFF;
        }

        .brand-logo .logo-mark {
            width: 38px;
            height: 38px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #FFFFFF;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 16px;
            border-radius: var(--radius-pill);
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.92);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.16);
            color: #FFFFFF;
        }

        .main-nav a.active {
            background: rgba(255, 255, 255, 0.2);
            color: #FFFFFF;
            font-weight: 600;
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.28);
        }

        .main-nav a.nav-cta {
            background: var(--gradient-cta);
            color: #FFFFFF;
            font-weight: 600;
            box-shadow: var(--shadow-warm);
            padding: 10px 20px;
            margin-left: 6px;
        }

        .main-nav a.nav-cta:hover {
            box-shadow: 0 12px 28px rgba(249, 115, 22, 0.32);
            transform: translateY(-1px);
            background: var(--gradient-cta);
            color: #FFFFFF;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: rgba(255, 255, 255, 0.16);
            border-radius: 8px;
            transition: background var(--transition-fast);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.28);
        }

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

        /* Page Hero (Category) */
        .page-hero {
            background: var(--gradient-brand);
            padding: 64px 0 56px;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .page-hero .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.16);
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 18px;
            color: rgba(255, 255, 255, 0.95);
            letter-spacing: 0.3px;
        }

        .page-hero h1 {
            font-size: clamp(32px, 4.5vw, 44px);
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            color: #FFFFFF;
        }

        .page-hero .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            max-width: 680px;
            margin-bottom: 24px;
        }

        .page-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
        }

        .page-hero .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .page-hero .hero-meta i {
            font-size: 14px;
            color: var(--brand-warm-light);
        }

        /* News List Section */
        .news-list-section {
            background: var(--background-mist);
        }

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

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

        .news-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--border-soft);
        }

        .news-card .news-thumb {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            background: var(--background-sand);
        }

        .news-card .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            transition: transform var(--transition-slow);
        }

        .news-card:hover .news-thumb img {
            transform: scale(1.05);
        }

        .news-card .news-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--brand-warm);
            color: #FFFFFF;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.3px;
        }

        .news-card .news-body {
            padding: 24px 26px 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-card .news-date {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .news-card .news-date i {
            font-size: 13px;
            color: var(--brand-teal);
        }

        .news-card .news-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.45;
            margin-bottom: 10px;
            letter-spacing: -0.2px;
        }

        .news-card .news-excerpt {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }

        .news-card .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-deep);
            transition: all var(--transition-fast);
        }

        .news-card .read-more i {
            font-size: 13px;
            transition: transform var(--transition-fast);
        }

        .news-card .read-more:hover {
            color: var(--brand-warm);
        }

        .news-card .read-more:hover i {
            transform: translateX(4px);
        }

        /* Deep Content Section */
        .deep-content-section {
            background: var(--background-sand);
        }

        .deep-content-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            max-width: 880px;
            margin: 0 auto;
        }

        .deep-content-card h2 {
            font-size: clamp(22px, 2.8vw, 28px);
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 20px;
            line-height: 1.4;
        }

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

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

        .deep-content-card .content-highlight {
            background: var(--brand-warm-bg);
            border-left: 4px solid var(--brand-warm);
            padding: 18px 22px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
            font-size: 16px;
            color: var(--text-heading);
            line-height: 1.8;
        }

        /* Stats Badge Section */
        .stats-badge-section {
            background: var(--background-mist);
        }

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

        .stat-badge-item {
            background: var(--card-white);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

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

        .stat-badge-item .stat-badge-icon {
            width: 48px;
            height: 48px;
            margin: 0 auto 14px;
            background: var(--brand-warm-bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--brand-warm);
        }

        .stat-badge-item .stat-badge-number {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 4px;
            letter-spacing: -0.5px;
        }

        .stat-badge-item .stat-badge-label {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* Hot Articles Section */
        .hot-articles-section {
            background: var(--background-sand);
        }

        .hot-articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .hot-article-card {
            background: var(--card-white);
            border-radius: var(--radius-md);
            padding: 26px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

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

        .hot-article-card .hot-rank {
            font-size: 13px;
            font-weight: 700;
            color: var(--brand-warm);
            margin-bottom: 8px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        .hot-article-card .hot-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.5;
            margin-bottom: 10px;
        }

        .hot-article-card .hot-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
        }

        .hot-article-card .hot-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-deep);
            margin-top: 14px;
            transition: color var(--transition-fast);
        }

        .hot-article-card .hot-link:hover {
            color: var(--brand-warm);
        }

        /* CTA Section */
        .cta-section {
            background: var(--gradient-brand);
            padding: 64px 0;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -50%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(26px, 3vw, 32px);
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 12px;
            color: #FFFFFF;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.7;
            max-width: 560px;
            margin: 0 auto 28px;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--gradient-cta);
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-pill);
            box-shadow: 0 8px 28px rgba(249, 115, 22, 0.35);
            transition: all var(--transition-base);
            letter-spacing: 0.3px;
        }

        .cta-btn:hover {
            box-shadow: 0 14px 40px rgba(249, 115, 22, 0.48);
            transform: translateY(-2px);
            color: #FFFFFF;
            background: var(--gradient-cta);
        }

        .cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 6px 20px rgba(249, 115, 22, 0.3);
        }

        /* Related Topics */
        .related-topics-section {
            background: var(--background-mist);
        }

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

        .related-topic-card {
            background: var(--card-white);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            text-align: center;
        }

        .related-topic-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: var(--brand-teal);
        }

        .related-topic-card .topic-icon {
            width: 44px;
            height: 44px;
            margin: 0 auto 12px;
            background: rgba(11, 110, 110, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--brand-deep);
        }

        .related-topic-card .topic-name {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }

        .related-topic-card .topic-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Footer */
        .site-footer {
            background: #0A3D3A;
            color: rgba(255, 255, 255, 0.85);
            padding: 56px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .site-footer .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            max-width: 320px;
        }

        .site-footer .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .site-footer .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 10px;
            transition: color var(--transition-fast);
        }

        .site-footer .footer-col a:hover {
            color: var(--brand-warm-light);
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }

        .site-footer .footer-legal {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .site-footer .footer-legal a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition-fast);
        }

        .site-footer .footer-legal a:hover {
            color: var(--brand-warm-light);
        }

        .site-footer .footer-legal span {
            white-space: nowrap;
        }

        /* Mobile Navigation */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            z-index: 999;
            background: var(--gradient-brand);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
            box-shadow: 0 16px 32px rgba(11, 110, 110, 0.3);
            padding: 20px 24px 24px;
            flex-direction: column;
            gap: 4px;
        }

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

        .mobile-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.92);
            transition: all var(--transition-fast);
        }

        .mobile-nav a:hover {
            background: rgba(255, 255, 255, 0.16);
            color: #FFFFFF;
        }

        .mobile-nav a.active {
            background: rgba(255, 255, 255, 0.2);
            color: #FFFFFF;
            font-weight: 600;
        }

        .mobile-nav a.nav-cta {
            background: var(--gradient-cta);
            color: #FFFFFF;
            font-weight: 600;
            box-shadow: var(--shadow-warm);
            margin-top: 8px;
            justify-content: center;
        }

        .mobile-nav a.nav-cta:hover {
            background: var(--gradient-cta);
            box-shadow: 0 12px 28px rgba(249, 115, 22, 0.32);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }

            .stats-badge-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .hot-articles-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .related-topics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

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

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .section {
                padding: 48px 0;
            }

            .page-hero {
                padding: 44px 0 40px;
            }

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

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

            .news-card .news-title {
                font-size: 17px;
            }

            .deep-content-card {
                padding: 26px 22px;
            }

            .hot-articles-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

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

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

            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }

            .site-footer .footer-legal {
                justify-content: center;
                gap: 10px;
            }
        }

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

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

            .page-hero .hero-desc {
                font-size: 15px;
            }

            .stats-badge-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .related-topics-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .stats-badge-item .stat-badge-number {
                font-size: 22px;
            }

            .cta-btn {
                font-size: 15px;
                padding: 12px 24px;
            }
        }

/* roulang page: category4 */
:root {
            --brand-deep: #0B6E6E;
            --brand-darker: #0A5C5C;
            --brand-teal: #16A7A0;
            --brand-warm: #F97316;
            --brand-warm-light: #FB8C3D;
            --brand-warm-bg: #FFF3E8;
            --background-mist: #F7FAF9;
            --background-sand: #F0F5F4;
            --card-white: #FFFFFF;
            --text-ink: #1A2E2C;
            --text-heading: #0F3D3B;
            --text-secondary: #5B6F6D;
            --border-soft: #D9E5E3;
            --border-light: #E6EFED;
            --gradient-brand: linear-gradient(135deg, #0B6E6E 0%, #16A7A0 60%, #1FB8AE 100%);
            --gradient-cta: linear-gradient(135deg, #F97316 0%, #FB8C3D 60%, #FDA04F 100%);
            --shadow-card: 0 8px 24px rgba(11, 110, 110, 0.08);
            --shadow-card-hover: 0 16px 40px rgba(11, 110, 110, 0.14);
            --shadow-warm: 0 8px 20px rgba(249, 115, 22, 0.18);
            --radius-sm: 12px;
            --radius-md: 18px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --radius-pill: 999px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", "Helvetica Neue", Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --max-width: 1200px;
            --nav-height: 76px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-ink);
            background-color: var(--background-mist);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(249, 115, 22, 0.55);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        .section {
            padding: 72px 0;
            position: relative;
        }

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

        .section-white {
            background-color: var(--background-mist);
        }

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

        .section-header {
            max-width: 760px;
            margin: 0 auto 48px;
            text-align: center;
        }

        .section-header .section-tag {
            display: inline-block;
            background: rgba(11, 110, 110, 0.08);
            color: var(--brand-deep);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .section-header h2 {
            font-size: clamp(26px, 3.2vw, 34px);
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.35;
            letter-spacing: -0.3px;
            margin-bottom: 14px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 auto;
            max-width: 640px;
        }

        .text-gradient {
            background: var(--gradient-brand);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--gradient-brand);
            box-shadow: 0 2px 16px rgba(11, 110, 110, 0.28);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
            flex-shrink: 0;
        }

        .brand-logo:hover {
            opacity: 0.85;
            color: #FFFFFF;
        }

        .brand-logo .logo-mark {
            width: 38px;
            height: 38px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #FFFFFF;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            color: rgba(255, 255, 255, 0.88);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            transition: all var(--transition-base);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.16);
        }

        .main-nav a.active {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.22);
            font-weight: 600;
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 3px;
            background: var(--brand-warm-light);
            border-radius: 2px;
        }

        .main-nav .nav-cta {
            background: var(--gradient-cta);
            color: #FFFFFF;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-pill);
            box-shadow: var(--shadow-warm);
            margin-left: 8px;
            transition: all var(--transition-base);
        }

        .main-nav .nav-cta:hover {
            background: linear-gradient(135deg, #e8620a 0%, #f07a1f 60%, #f9943b 100%);
            box-shadow: 0 12px 28px rgba(249, 115, 22, 0.3);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: rgba(255, 255, 255, 0.18);
            border-radius: 10px;
            padding: 10px;
            flex-shrink: 0;
        }

        .nav-toggle span {
            width: 24px;
            height: 2px;
            background: #FFFFFF;
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        .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);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 16px;
            padding: 14px 28px;
            border-radius: var(--radius-pill);
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .btn-primary {
            background: var(--gradient-brand);
            color: #FFFFFF;
            box-shadow: var(--shadow-card);
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            color: #FFFFFF;
            background: linear-gradient(135deg, #0A5C5C 0%, #139A94 60%, #17B0A6 100%);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-card);
        }

        .btn-warm {
            background: var(--gradient-cta);
            color: #FFFFFF;
            box-shadow: var(--shadow-warm);
        }

        .btn-warm:hover {
            background: linear-gradient(135deg, #e8620a 0%, #f07a1f 60%, #f9943b 100%);
            box-shadow: 0 12px 28px rgba(249, 115, 22, 0.3);
            transform: translateY(-2px);
            color: #FFFFFF;
        }

        .btn-warm:active {
            transform: translateY(0);
        }

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

        .btn-outline:hover {
            background: rgba(11, 110, 110, 0.06);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }

        .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--brand-deep);
            font-weight: 600;
            font-size: 15px;
            padding: 0;
            transition: all var(--transition-fast);
        }

        .btn-link:hover {
            color: var(--brand-warm);
            gap: 10px;
        }

        /* ===== Category Header ===== */
        .category-header {
            background: var(--gradient-brand);
            position: relative;
            overflow: hidden;
            padding: 60px 0 80px;
        }

        .category-header::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-header::after {
            content: '';
            position: absolute;
            bottom: -50%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: rgba(249, 115, 22, 0.12);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-header .container {
            position: relative;
            z-index: 2;
        }

        .category-header .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .category-header .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
        }

        .category-header .breadcrumb a:hover {
            color: #FFFFFF;
        }

        .category-header .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.45);
        }

        .category-header h1 {
            font-size: clamp(32px, 4.5vw, 42px);
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.3;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        .category-header .category-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .category-header .category-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }

        .category-header .stat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #FFFFFF;
            font-size: 15px;
        }

        .category-header .stat-item .stat-icon {
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.18);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
        }

        /* ===== Search / Filter ===== */
        .filter-section {
            background: var(--background-mist);
            padding: 32px 0 24px;
            border-bottom: 1px solid var(--border-light);
        }

        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            justify-content: space-between;
        }

        .filter-search {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--card-white);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-pill);
            padding: 8px 20px;
            flex: 1;
            min-width: 220px;
            max-width: 380px;
            transition: all var(--transition-base);
        }

        .filter-search:focus-within {
            border-color: var(--brand-teal);
            box-shadow: 0 0 0 4px rgba(22, 167, 160, 0.1);
        }

        .filter-search i {
            color: var(--text-secondary);
            font-size: 15px;
        }

        .filter-search input {
            border: none;
            background: transparent;
            font-family: var(--font-family);
            font-size: 15px;
            color: var(--text-ink);
            width: 100%;
            outline: none;
        }

        .filter-search input::placeholder {
            color: var(--text-secondary);
            opacity: 0.7;
        }

        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 7px 18px;
            background: var(--card-white);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-base);
            cursor: pointer;
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--brand-teal);
            color: var(--brand-deep);
            background: rgba(22, 167, 160, 0.06);
        }

        .filter-tag.active {
            background: var(--brand-deep);
            color: #FFFFFF;
            border-color: var(--brand-deep);
        }

        /* ===== Knowledge List ===== */
        .knowledge-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

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

        .knowledge-card .card-image {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        .knowledge-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            transition: transform var(--transition-slow);
        }

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

        .knowledge-card .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(11, 110, 110, 0.9);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.3px;
        }

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

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

        .knowledge-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.45;
            margin-bottom: 10px;
            transition: color var(--transition-fast);
        }

        .knowledge-card:hover .card-title {
            color: var(--brand-deep);
        }

        .knowledge-card .card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 18px;
            flex: 1;
        }

        .knowledge-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
            margin-top: auto;
        }

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

        .knowledge-card .card-meta i {
            font-size: 13px;
            color: var(--brand-teal);
        }

        /* ===== Deep Paragraph Sections ===== */
        .deep-text {
            max-width: 820px;
            margin: 0 auto;
        }

        .deep-text h2 {
            font-size: clamp(24px, 3vw, 30px);
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.4;
            margin-bottom: 20px;
            letter-spacing: -0.3px;
        }

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

        .deep-text .highlight-box {
            background: var(--brand-warm-bg);
            border-left: 4px solid var(--brand-warm);
            padding: 20px 24px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 24px 0;
            font-size: 15px;
            color: var(--text-ink);
            line-height: 1.8;
        }

        .deep-text .highlight-box strong {
            color: var(--brand-deep);
        }

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

        .stat-badge-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            border: 1px solid var(--border-light);
        }

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

        .stat-badge-card .badge-number {
            font-size: clamp(32px, 4vw, 42px);
            font-weight: 800;
            background: var(--gradient-cta);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stat-badge-card .badge-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 4px;
        }

        .stat-badge-card .badge-desc {
            font-size: 13px;
            color: var(--text-secondary);
        }

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

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

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

        .topic-card .topic-image {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        .topic-card .topic-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-slow);
        }

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

        .topic-card .topic-body {
            padding: 22px 24px 24px;
        }

        .topic-card .topic-tag {
            display: inline-block;
            background: rgba(22, 167, 160, 0.1);
            color: var(--brand-deep);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 10px;
        }

        .topic-card .topic-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.45;
            margin-bottom: 8px;
        }

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

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

        .faq-item {
            background: var(--card-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            margin-bottom: 14px;
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--border-soft);
        }

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

        .faq-question:hover {
            color: var(--brand-deep);
            background: rgba(11, 110, 110, 0.03);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(11, 110, 110, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-deep);
            font-size: 14px;
            transition: all var(--transition-base);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            background: var(--brand-deep);
            color: #FFFFFF;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow) ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding-top: 4px;
            border-top: 1px solid var(--border-light);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--gradient-brand);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -5%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 350px;
            height: 350px;
            background: rgba(249, 115, 22, 0.15);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(26px, 3.5vw, 36px);
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 580px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .cta-section .btn-warm {
            font-size: 17px;
            padding: 16px 36px;
            box-shadow: 0 12px 30px rgba(249, 115, 22, 0.35);
        }

        .cta-section .btn-warm:hover {
            box-shadow: 0 16px 40px rgba(249, 115, 22, 0.45);
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--brand-darker);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }

        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            padding: 6px 0;
            transition: all var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--brand-warm-light);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-legal {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .footer-legal a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition-fast);
        }

        .footer-legal a:hover {
            color: var(--brand-warm-light);
        }

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

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

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

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

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--gradient-brand);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                box-shadow: 0 16px 32px rgba(11, 110, 110, 0.3);
                border-bottom: 1px solid rgba(255, 255, 255, 0.2);
            }

            .main-nav.mobile-open {
                display: flex;
            }

            .main-nav a {
                padding: 12px 16px;
                border-radius: 10px;
                font-size: 16px;
            }

            .main-nav .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }

            .nav-toggle {
                display: flex;
            }

            .section {
                padding: 48px 0;
            }

            .category-header {
                padding: 40px 0 56px;
            }

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

            .category-header .category-desc {
                font-size: 15px;
            }

            .knowledge-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .topic-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .stats-badges {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .filter-bar {
                flex-direction: column;
                align-items: stretch;
                gap: 14px;
            }

            .filter-search {
                max-width: 100%;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

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

            .section {
                padding: 36px 0;
            }

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

            .category-header {
                padding: 28px 0 40px;
            }

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

            .knowledge-card .card-body {
                padding: 16px 18px 18px;
            }

            .knowledge-card .card-title {
                font-size: 16px;
            }

            .stats-badges {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .stat-badge-card {
                padding: 20px 14px;
            }

            .stat-badge-card .badge-number {
                font-size: 26px;
            }

            .btn {
                padding: 12px 22px;
                font-size: 14px;
            }

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

            .cta-section p {
                font-size: 15px;
            }

            .deep-text h2 {
                font-size: 20px;
            }

            .deep-text p {
                font-size: 15px;
            }

            .filter-tag {
                padding: 5px 14px;
                font-size: 13px;
            }
        }