/* roulang page: index */
:root {
            --primary: #0A4C8A;
            --primary-light: #E8F1FA;
            --primary-dark: #06305A;
            --secondary: #E89C0D;
            --secondary-hover: #c8850b;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text-primary: #1E293B;
            --text-secondary: #475569;
            --border: #E2E8F0;
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
            --radius: 12px;
            --radius-sm: 8px;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        button,
        input,
        textarea {
            font-family: var(--font-stack);
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        /* Top Info Bar */
        .top-info-bar {
            background-color: var(--primary-dark);
            color: #ffffff;
            font-size: 0.875rem;
            padding: 0.5rem 0;
            z-index: 1001;
            position: relative;
        }
        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .top-info-bar .domain-text {
            font-weight: 500;
            letter-spacing: 0.02em;
        }
        .top-info-bar .action-links a {
            color: #ffffff;
            margin-left: 1rem;
            font-size: 0.85rem;
            transition: opacity 0.2s;
        }
        .top-info-bar .action-links a:hover {
            opacity: 0.8;
        }

        /* Main Navigation */
        .main-nav {
            background-color: #ffffff;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0.75rem 0;
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.03em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        .nav-logo i {
            font-size: 1.5rem;
            color: var(--secondary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-links a {
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-primary);
            transition: all 0.2s ease;
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0.9rem;
            right: 0.9rem;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-btn {
            background-color: var(--secondary);
            color: #ffffff !important;
            padding: 0.5rem 1.2rem !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            transition: all 0.2s ease !important;
        }
        .nav-cta-btn:hover {
            background-color: var(--secondary-hover) !important;
            color: #ffffff !important;
        }
        /* Hamburger */
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            cursor: pointer;
            color: var(--primary);
            padding: 0.4rem;
            line-height: 1;
        }
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.55);
            z-index: 2000;
            justify-content: flex-end;
        }
        .mobile-menu-overlay.open {
            display: flex;
        }
        .mobile-menu-panel {
            background: #fff;
            width: 280px;
            height: 100%;
            padding: 2rem 1.5rem;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .mobile-menu-panel a {
            display: block;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-primary);
            transition: all 0.2s;
        }
        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .mobile-menu-close {
            align-self: flex-end;
            background: none;
            border: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--text-primary);
            padding: 0.3rem;
        }

        /* Section spacing */
        section {
            padding: 3.5rem 0;
        }
        @media (min-width: 768px) {
            section {
                padding: 5rem 0;
            }
        }

        /* Section titles */
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 48px;
            height: 3px;
            background-color: var(--primary);
            border-radius: 2px;
            margin-top: 0.4rem;
        }
        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-bottom: 2rem;
            max-width: 600px;
        }

        /* Hero coupon wall */
        .hero-coupon-wall {
            background: linear-gradient(135deg, #0A3D6B 0%, #0A4C8A 40%, #06305A 100%);
            position: relative;
            overflow: hidden;
            padding: 4rem 0;
        }
        .hero-coupon-wall::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(232, 156, 13, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-coupon-wall::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 2rem;
        }
        .hero-main-coupon {
            background: #ffffff;
            border-radius: 20px;
            padding: 2.5rem 2rem;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
            max-width: 520px;
            width: 100%;
            position: relative;
            border: 3px dashed var(--secondary);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .hero-main-coupon:hover {
            transform: translateY(-6px);
            box-shadow: 0 28px 60px rgba(0, 0, 0, 0.3);
        }
        .hero-main-coupon .coupon-badge {
            position: absolute;
            top: -18px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--secondary);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 0.4rem 1.5rem;
            border-radius: 30px;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }
        .hero-main-coupon h1 {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 0.5rem;
            line-height: 1.3;
        }
        .hero-main-coupon .hero-desc {
            color: var(--text-secondary);
            font-size: 1rem;
            margin: 1rem 0 1.5rem;
            line-height: 1.6;
        }
        .hero-main-coupon .btn-claim {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            padding: 0.85rem 2.5rem;
            border-radius: 50px;
            transition: all 0.25s ease;
            cursor: pointer;
            border: none;
            letter-spacing: 0.03em;
        }
        .hero-main-coupon .btn-claim:hover {
            background: var(--secondary-hover);
            transform: scale(1.04);
            box-shadow: 0 8px 24px rgba(232, 156, 13, 0.4);
        }
        .hero-mini-coupons {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
            max-width: 600px;
            width: 100%;
        }
        .mini-coupon {
            background: rgba(255, 255, 255, 0.94);
            border-radius: 12px;
            padding: 1rem 1.3rem;
            text-align: center;
            flex: 1 1 130px;
            max-width: 170px;
            box-shadow: var(--shadow-card);
            transition: all 0.25s ease;
            cursor: pointer;
            border: 2px solid transparent;
        }
        .mini-coupon:hover {
            border-color: var(--secondary);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .mini-coupon .mini-icon {
            font-size: 1.6rem;
            color: var(--secondary);
            margin-bottom: 0.3rem;
        }
        .mini-coupon .mini-title {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
        }
        .mini-coupon .mini-sub {
            font-size: 0.78rem;
            color: var(--text-secondary);
        }

        /* Cards */
        .card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .card-body {
            padding: 1.5rem;
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: var(--radius) var(--radius) 0 0;
        }
        .card-date {
            display: inline-block;
            font-size: 0.8rem;
            color: var(--text-secondary);
            background: var(--primary-light);
            padding: 0.25rem 0.7rem;
            border-radius: 20px;
            margin-bottom: 0.5rem;
        }
        .card-title {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
            margin-bottom: 0.4rem;
            line-height: 1.5;
        }
        .card-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0.8rem;
        }
        .card-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            transition: color 0.2s;
        }
        .card-link:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        /* Buttons */
        .btn {
            display: inline-block;
            padding: 0.7rem 1.8rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.25s ease;
            cursor: pointer;
            text-align: center;
            border: none;
            letter-spacing: 0.02em;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 18px rgba(10, 76, 138, 0.3);
        }
        .btn-secondary {
            background: var(--secondary);
            color: #fff;
        }
        .btn-secondary:hover {
            background: var(--secondary-hover);
            box-shadow: 0 6px 18px rgba(232, 156, 13, 0.35);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            border-color: var(--primary-dark);
        }
        .btn:focus-visible {
            outline: 3px solid rgba(10, 76, 138, 0.4);
            outline-offset: 2px;
        }

        /* Stats bar */
        .stat-item {
            text-align: center;
            padding: 1.5rem;
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.1;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 0.3rem;
        }

        /* FAQ */
        .faq-item {
            border-radius: var(--radius-sm);
            margin-bottom: 0.5rem;
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all 0.2s ease;
        }
        .faq-item summary {
            padding: 1rem 1.3rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #fff;
            user-select: none;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            font-size: 1.2rem;
            transition: transform 0.3s ease;
            color: var(--primary);
            flex-shrink: 0;
            margin-left: 0.8rem;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            padding: 0 1.3rem 1.2rem;
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.7;
            background: #fff;
        }
        .faq-item:nth-child(even) summary {
            background: var(--primary-light);
        }
        .faq-item:nth-child(even) .faq-answer {
            background: var(--primary-light);
        }
        .faq-item[open] {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(10, 76, 138, 0.06);
        }

        /* Form */
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.35rem;
            color: var(--text-primary);
            font-size: 0.9rem;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            transition: all 0.2s ease;
            background: #fff;
            color: var(--text-primary);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(10, 76, 138, 0.1);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 110px;
        }

        /* Footer */
        .site-footer {
            background: #0F2238;
            color: #cbd5e1;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .site-footer h4 {
            color: #fff;
            font-weight: 600;
            margin-bottom: 0.8rem;
            font-size: 1rem;
        }
        .site-footer a {
            color: #cbd5e1;
            transition: color 0.2s;
        }
        .site-footer a:hover {
            color: var(--secondary);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.82rem;
            color: #94a3b8;
            line-height: 1.8;
        }
        .site-footer .footer-bottom a {
            color: #94a3b8;
            margin: 0 0.4rem;
        }

        /* Testimonial bubbles */
        .testimonial-bubble {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
            position: relative;
            transition: all 0.3s ease;
        }
        .testimonial-bubble:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .testimonial-bubble::before {
            content: '\201C';
            font-size: 3rem;
            color: var(--primary-light);
            position: absolute;
            top: 0.5rem;
            left: 1rem;
            line-height: 1;
            font-family: serif;
        }
        .testimonial-bubble .t-text {
            padding-top: 1.2rem;
            color: var(--text-primary);
            font-size: 0.93rem;
            line-height: 1.7;
        }
        .testimonial-bubble .t-author {
            margin-top: 0.8rem;
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--primary);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-main-coupon h1 {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .stat-number {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .hamburger-btn {
                display: block;
            }
            .hero-coupon-wall {
                padding: 3rem 0;
            }
            .hero-main-coupon {
                padding: 1.8rem 1.3rem;
                border-radius: 16px;
            }
            .hero-main-coupon h1 {
                font-size: 1.65rem;
            }
            .hero-main-coupon .hero-desc {
                font-size: 0.9rem;
            }
            .hero-mini-coupons {
                gap: 0.6rem;
            }
            .mini-coupon {
                flex: 1 1 100px;
                max-width: 140px;
                padding: 0.8rem;
            }
            section {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .hero-main-coupon h1 {
                font-size: 1.4rem;
            }
            .hero-mini-coupons {
                flex-direction: column;
                align-items: center;
            }
            .mini-coupon {
                max-width: 100%;
                width: 100%;
            }
            .container {
                padding-left: 0.8rem;
                padding-right: 0.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .stat-number {
                font-size: 1.6rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #0A4C8A;
            --primary-light: #E8F1FA;
            --primary-dark: #06305A;
            --secondary: #E89C0D;
            --secondary-hover: #c8850b;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text-primary: #1E293B;
            --text-secondary: #475569;
            --border: #E2E8F0;
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
            --radius: 12px;
            --radius-sm: 8px;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            margin: 0;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        button,
        input,
        textarea {
            font-family: var(--font-stack);
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        /* Top Info Bar */
        .top-info-bar {
            background-color: var(--primary-dark);
            color: #ffffff;
            font-size: 0.85rem;
            padding: 0.5rem 0;
        }
        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .top-info-bar .domain-text {
            font-weight: 500;
            letter-spacing: 0.02em;
        }
        .top-info-bar .action-links a {
            color: #ffffff;
            margin-left: 1rem;
            font-size: 0.85rem;
            transition: opacity 0.2s;
        }
        .top-info-bar .action-links a:hover {
            opacity: 0.8;
        }

        /* Main Navigation */
        .main-nav {
            background-color: #ffffff;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0.75rem 0;
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.03em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        .nav-logo i {
            font-size: 1.5rem;
            color: var(--secondary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            flex-wrap: wrap;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-primary);
            transition: all 0.2s ease;
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0.9rem;
            right: 0.9rem;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-btn {
            background-color: var(--secondary);
            color: #ffffff !important;
            padding: 0.5rem 1.2rem !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            transition: all 0.2s ease !important;
        }
        .nav-cta-btn:hover {
            background-color: var(--secondary-hover) !important;
            color: #ffffff !important;
        }

        /* Hamburger */
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            cursor: pointer;
            color: var(--primary);
            padding: 0.4rem;
            line-height: 1;
        }
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.55);
            z-index: 2000;
            justify-content: flex-end;
        }
        .mobile-menu-overlay.open {
            display: flex;
        }
        .mobile-menu-panel {
            background: #fff;
            width: 280px;
            height: 100%;
            padding: 2rem 1.5rem;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .mobile-menu-panel a {
            display: block;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-primary);
            transition: all 0.2s;
        }
        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .mobile-menu-close {
            align-self: flex-end;
            background: none;
            border: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--text-primary);
            padding: 0.3rem;
        }

        /* Hero Section */
        .category-hero {
            background: linear-gradient(135deg, #f0f6fc 0%, #e8f1fa 40%, #fdf8ee 100%);
            padding: 3.5rem 0 4rem;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(10, 76, 138, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(232, 156, 13, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .breadcrumb a {
            color: var(--primary);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        .breadcrumb .separator {
            color: #94a3b8;
            font-size: 0.75rem;
        }
        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 600;
        }
        .category-hero-content {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 3rem;
            flex-wrap: wrap;
        }
        .category-hero-text {
            flex: 1;
            min-width: 280px;
        }
        .category-hero-text h1 {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 0.75rem;
            line-height: 1.3;
        }
        .category-hero-text .hero-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin: 0 0 1.5rem;
            line-height: 1.6;
            max-width: 560px;
        }
        .category-hero-visual {
            flex: 0 0 340px;
            min-width: 260px;
            position: relative;
            z-index: 1;
        }
        .category-hero-visual img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-hover);
            width: 100%;
        }

        /* Section spacing */
        section {
            padding: 3.5rem 0;
        }

        /* Section titles */
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 50px;
            height: 3px;
            background-color: var(--primary);
            border-radius: 2px;
            margin-top: 0.4rem;
        }
        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        /* Cards */
        .card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 1.5rem;
            transition: all 0.3s ease;
            border: 1px solid var(--border);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: #d0dbe8;
        }

        /* Buttons */
        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
            padding: 0.75rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: inline-block;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
            text-align: center;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            box-shadow: 0 6px 18px rgba(10, 76, 138, 0.25);
            transform: translateY(-1px);
        }
        .btn-secondary {
            background-color: var(--secondary);
            color: #ffffff;
            padding: 0.75rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: inline-block;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
            text-align: center;
        }
        .btn-secondary:hover {
            background-color: var(--secondary-hover);
            box-shadow: 0 6px 18px rgba(232, 156, 13, 0.3);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
            padding: 0.7rem 1.8rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: inline-block;
            transition: all 0.25s ease;
            cursor: pointer;
            text-align: center;
        }
        .btn-outline:hover {
            background-color: var(--primary-light);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
        }

        /* Stat cards */
        .stat-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 1.8rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: all 0.3s ease;
        }
        .stat-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-number.gold {
            color: var(--secondary);
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 0.4rem;
        }

        /* Score cards */
        .score-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 1.2rem 1.5rem;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            transition: all 0.3s ease;
        }
        .score-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: #c5d3e3;
        }
        .score-card .team {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
            min-width: 90px;
            text-align: center;
        }
        .score-card .score-display {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            min-width: 70px;
            text-align: center;
            letter-spacing: 0.05em;
        }
        .score-card .match-status {
            font-size: 0.8rem;
            color: var(--secondary);
            font-weight: 600;
            text-align: center;
            background: #fef9ee;
            padding: 0.25rem 0.7rem;
            border-radius: 20px;
            white-space: nowrap;
        }
        .score-card .match-info {
            font-size: 0.8rem;
            color: var(--text-secondary);
            text-align: center;
        }

        /* Process steps */
        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 1.2rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid var(--border);
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
        }
        .step-content h4 {
            margin: 0 0 0.3rem;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-primary);
        }
        .step-content p {
            margin: 0;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 0.75rem;
            overflow: hidden;
            background: var(--card-bg);
            transition: all 0.2s ease;
        }
        .faq-item:hover {
            border-color: #c5d3e3;
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 1rem 1.3rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            text-align: left;
            gap: 1rem;
            transition: background 0.2s;
        }
        .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-question .faq-icon {
            font-size: 1.2rem;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 1.3rem;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.3rem 1rem;
        }
        .faq-answer p {
            margin: 0;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #ffffff;
            padding: 4rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.04) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.9;
            margin-bottom: 1.8rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }

        /* Footer */
        .site-footer {
            background: #1a2535;
            color: #cbd5e1;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .site-footer h4 {
            color: #ffffff;
            font-size: 1.05rem;
            margin-bottom: 0.8rem;
            font-weight: 600;
        }
        .site-footer a {
            color: #cbd5e1;
            transition: color 0.2s;
        }
        .site-footer a:hover {
            color: #ffffff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-bottom {
            border-top: 1px solid #2d3a4a;
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.8rem;
            color: #94a3b8;
            line-height: 2;
        }
        .footer-bottom a {
            color: #94a3b8;
            margin: 0 0.3rem;
        }
        .footer-bottom a:hover {
            color: #ffffff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .category-hero-content {
                flex-direction: column;
                gap: 2rem;
            }
            .category-hero-visual {
                flex: 0 0 auto;
                width: 100%;
                max-width: 400px;
            }
            .category-hero-text h1 {
                font-size: 2rem;
            }
            .stat-number {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .hamburger-btn {
                display: block;
            }
            .category-hero {
                padding: 2.5rem 0 3rem;
            }
            .category-hero-text h1 {
                font-size: 1.75rem;
            }
            .category-hero-text .hero-desc {
                font-size: 1rem;
            }
            section {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .score-card {
                flex-direction: column;
                text-align: center;
                gap: 0.5rem;
            }
            .score-card .team {
                min-width: auto;
            }
            .score-card .score-display {
                font-size: 1.6rem;
                min-width: auto;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .category-hero-text h1 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .btn-primary,
            .btn-secondary,
            .btn-outline {
                padding: 0.6rem 1.4rem;
                font-size: 0.9rem;
            }
            .stat-number {
                font-size: 1.6rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0A4C8A;
            --primary-light: #E8F1FA;
            --primary-dark: #06305A;
            --secondary: #E89C0D;
            --secondary-hover: #c8850b;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text-primary: #1E293B;
            --text-secondary: #475569;
            --border: #E2E8F0;
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
            --radius: 12px;
            --radius-sm: 8px;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            margin: 0;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        button,
        input,
        textarea,
        select {
            font-family: var(--font-stack);
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        /* Top Info Bar */
        .top-info-bar {
            background-color: var(--primary-dark);
            color: #ffffff;
            font-size: 0.85rem;
            padding: 0.5rem 0;
        }
        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .top-info-bar .domain-text {
            font-weight: 500;
            letter-spacing: 0.02em;
        }
        .top-info-bar .action-links a {
            color: #ffffff;
            margin-left: 1rem;
            font-size: 0.85rem;
            transition: opacity 0.2s;
        }
        .top-info-bar .action-links a:hover {
            opacity: 0.8;
        }

        /* Main Navigation */
        .main-nav {
            background-color: #ffffff;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0.75rem 0;
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.03em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        .nav-logo i {
            font-size: 1.5rem;
            color: var(--secondary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            flex-wrap: wrap;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-primary);
            transition: all 0.2s ease;
            position: relative;
            white-space: nowrap;
            display: inline-block;
        }
        .nav-links a:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0.9rem;
            right: 0.9rem;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-btn {
            background-color: var(--secondary);
            color: #ffffff !important;
            padding: 0.5rem 1.2rem !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            transition: all 0.2s ease !important;
        }
        .nav-cta-btn:hover {
            background-color: var(--secondary-hover) !important;
            color: #ffffff !important;
        }
        .nav-cta-btn.active::after {
            display: none !important;
        }

        /* Hamburger */
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            cursor: pointer;
            color: var(--primary);
            padding: 0.4rem;
            line-height: 1;
        }
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.55);
            z-index: 2000;
            justify-content: flex-end;
        }
        .mobile-menu-overlay.open {
            display: flex;
        }
        .mobile-menu-panel {
            background: #fff;
            width: 280px;
            height: 100%;
            padding: 2rem 1.5rem;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .mobile-menu-panel a {
            display: block;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-primary);
            transition: all 0.2s;
        }
        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .mobile-menu-close {
            align-self: flex-end;
            background: none;
            border: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--text-primary);
            padding: 0.3rem;
        }

        /* Section spacing */
        section {
            padding: 4rem 0;
        }

        /* Section titles */
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 50px;
            height: 3px;
            background-color: var(--primary);
            margin-top: 0.5rem;
            border-radius: 2px;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            max-width: 600px;
        }

        /* Cards */
        .card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .card-body {
            padding: 1.5rem;
        }

        /* Buttons */
        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
            padding: 0.75rem 1.8rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.2s ease;
            display: inline-block;
            text-align: center;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-secondary {
            background-color: var(--secondary);
            color: #ffffff;
            padding: 0.75rem 1.8rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.2s ease;
            display: inline-block;
            text-align: center;
        }
        .btn-secondary:hover {
            background-color: var(--secondary-hover);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: all 0.2s ease;
            display: inline-block;
            text-align: center;
        }
        .btn-outline:hover {
            background-color: var(--primary-light);
        }

        /* Form */
        .form-input {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            transition: all 0.2s ease;
            background: #fff;
            color: var(--text-primary);
        }
        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(10, 76, 138, 0.15);
        }
        .form-label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.4rem;
            color: var(--text-primary);
            font-size: 0.9rem;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            gap: 0.5rem;
            align-items: center;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0.75rem;
        }
        .breadcrumb a {
            color: var(--primary);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        .breadcrumb .separator {
            color: var(--border);
        }

        /* Stats */
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 0.25rem;
        }

        /* FAQ */
        .faq-item {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 0.75rem;
            border: 1px solid var(--border);
            background: #fff;
        }
        .faq-question {
            padding: 1rem 1.25rem;
            cursor: pointer;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            transition: background 0.2s;
            background: #fff;
            color: var(--text-primary);
        }
        .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-question .faq-icon {
            font-size: 1.2rem;
            transition: transform 0.3s ease;
            color: var(--primary);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 1.25rem;
            background: #fafbfc;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0.75rem 1.25rem 1.25rem;
        }

        /* Table */
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
        }
        .data-table thead {
            background: var(--primary);
            color: #fff;
        }
        .data-table thead th {
            padding: 0.8rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        .data-table tbody td {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid var(--border);
            color: var(--text-primary);
        }
        .data-table tbody tr:hover {
            background: var(--primary-light);
        }
        .data-table tbody tr:nth-child(even) {
            background: #f9fafb;
        }
        .data-table tbody tr:nth-child(even):hover {
            background: var(--primary-light);
        }
        .table-badge {
            display: inline-block;
            padding: 0.2rem 0.6rem;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
        }
        .badge-up {
            background: #dcfce7;
            color: #166534;
        }
        .badge-down {
            background: #fef2f2;
            color: #991b1b;
        }
        .badge-stable {
            background: #f0f9ff;
            color: #075985;
        }

        /* Footer */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .site-footer h4 {
            color: #ffffff;
            font-weight: 600;
            margin-bottom: 1rem;
            font-size: 1rem;
        }
        .site-footer a {
            color: #cbd5e1;
            transition: color 0.2s;
        }
        .site-footer a:hover {
            color: #ffffff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.8rem;
            color: #94a3b8;
            line-height: 2;
        }
        .footer-bottom a {
            color: #94a3b8;
            margin: 0 0.5rem;
        }
        .footer-bottom a:hover {
            color: #ffffff;
        }

        /* Hero download card */
        .report-cover {
            background: linear-gradient(135deg, #ffffff 0%, #f0f5fa 100%);
            border: 2px solid var(--border);
            border-radius: var(--radius);
            padding: 2rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .report-cover img {
            border-radius: 6px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            margin: 0 auto 1rem;
        }
        .report-cover .cover-badge {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.04em;
        }

        /* Process steps */
        .step-item {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            margin-bottom: 1.5rem;
        }
        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-links a {
                padding: 0.4rem 0.6rem;
                font-size: 0.85rem;
            }
            .stat-number {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger-btn {
                display: block;
            }
            .nav-links {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            section {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .data-table {
                font-size: 0.75rem;
            }
            .data-table thead th,
            .data-table tbody td {
                padding: 0.5rem 0.6rem;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .top-info-bar .container {
                flex-direction: column;
                text-align: center;
            }
            .data-table {
                font-size: 0.7rem;
            }
            .data-table thead th,
            .data-table tbody td {
                padding: 0.4rem 0.4rem;
            }
            .btn-primary,
            .btn-secondary,
            .btn-outline {
                padding: 0.6rem 1.2rem;
                font-size: 0.9rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0A4C8A;
            --primary-light: #E8F1FA;
            --primary-dark: #06305A;
            --secondary: #E89C0D;
            --secondary-hover: #c8850b;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text-primary: #1E293B;
            --text-secondary: #475569;
            --border: #E2E8F0;
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
            --radius: 12px;
            --radius-sm: 8px;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            margin: 0;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        button,
        input,
        textarea {
            font-family: var(--font-stack);
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        .top-info-bar {
            background-color: var(--primary-dark);
            color: #ffffff;
            font-size: 0.85rem;
            padding: 0.5rem 0;
            letter-spacing: 0.02em;
        }
        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .top-info-bar .domain-text {
            font-weight: 500;
            letter-spacing: 0.02em;
        }
        .top-info-bar .action-links a {
            color: #ffffff;
            margin-left: 1rem;
            font-size: 0.85rem;
            transition: opacity 0.2s;
        }
        .top-info-bar .action-links a:hover {
            opacity: 0.8;
        }

        .main-nav {
            background-color: #ffffff;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0.75rem 0;
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.03em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        .nav-logo i {
            font-size: 1.5rem;
            color: var(--secondary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            flex-wrap: wrap;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-primary);
            transition: all 0.2s ease;
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0.9rem;
            right: 0.9rem;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-btn {
            background-color: var(--secondary);
            color: #ffffff !important;
            padding: 0.5rem 1.2rem !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            transition: all 0.2s ease !important;
        }
        .nav-cta-btn:hover {
            background-color: var(--secondary-hover) !important;
            color: #ffffff !important;
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            cursor: pointer;
            color: var(--primary);
            padding: 0.4rem;
            line-height: 1;
        }
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.55);
            z-index: 2000;
            justify-content: flex-end;
        }
        .mobile-menu-overlay.open {
            display: flex;
        }
        .mobile-menu-panel {
            background: #fff;
            width: 280px;
            height: 100%;
            padding: 2rem 1.5rem;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .mobile-menu-panel a {
            display: block;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-primary);
            transition: all 0.2s;
        }
        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .mobile-menu-close {
            align-self: flex-end;
            background: none;
            border: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--text-primary);
            padding: 0.3rem;
        }

        section {
            padding: 4.5rem 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 0.5rem;
            background: var(--primary-light);
            padding: 0.3rem 0.9rem;
            border-radius: 20px;
        }
        .section-title {
            font-size: 1.85rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 56px;
            height: 3px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            max-width: 650px;
            line-height: 1.6;
        }

        .btn-primary {
            display: inline-block;
            background-color: var(--primary);
            color: #ffffff;
            padding: 0.75rem 1.8rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
            text-align: center;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
        }
        .btn-secondary {
            display: inline-block;
            background-color: var(--secondary);
            color: #ffffff;
            padding: 0.75rem 1.8rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
            text-align: center;
        }
        .btn-secondary:hover {
            background-color: var(--secondary-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
        }
        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--primary);
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            border: 2px solid var(--primary);
            transition: all 0.25s ease;
            cursor: pointer;
            text-align: center;
        }
        .btn-outline:hover {
            background-color: var(--primary-light);
        }

        .card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .card-body {
            padding: 1.5rem;
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 0.25rem;
        }

        .faq-item {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 0.75rem;
            border: 1px solid var(--border);
            background: var(--card-bg);
            transition: all 0.2s ease;
        }
        .faq-item summary {
            padding: 1.1rem 1.5rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            list-style: none;
            background: var(--card-bg);
            transition: background 0.2s;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            background: var(--primary-light);
        }
        .faq-item summary .faq-icon {
            font-size: 1.2rem;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        .breadcrumb {
            font-size: 0.9rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
            margin-bottom: 0.75rem;
        }
        .breadcrumb a {
            color: var(--primary);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--primary-dark);
        }
        .breadcrumb span {
            color: var(--text-secondary);
        }

        .hero-skew-img {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            transform: perspective(800px) rotateY(-3deg);
            transition: transform 0.4s ease;
        }
        .hero-skew-img:hover {
            transform: perspective(800px) rotateY(0deg);
        }
        .hero-skew-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .kpi-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: var(--secondary);
            margin-right: 0.4rem;
            flex-shrink: 0;
        }

        .process-step {
            display: flex;
            align-items: flex-start;
            gap: 1.2rem;
            padding: 1.5rem;
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            position: relative;
        }
        .process-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .process-step .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.3rem;
            flex-shrink: 0;
        }
        .process-step .step-content h4 {
            margin: 0 0 0.3rem;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-primary);
        }
        .process-step .step-content p {
            margin: 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .site-footer {
            background-color: #0f1d2e;
            color: #cbd5e1;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .site-footer h4 {
            color: #ffffff;
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 1rem;
            position: relative;
            padding-bottom: 0.5rem;
        }
        .site-footer h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background-color: var(--secondary);
            border-radius: 1px;
        }
        .site-footer a {
            color: #cbd5e1;
            transition: color 0.2s;
        }
        .site-footer a:hover {
            color: #ffffff;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.8rem;
            color: #94a3b8;
            line-height: 2;
        }
        .site-footer .footer-bottom a {
            color: #94a3b8;
            margin: 0 0.3rem;
        }
        .site-footer .footer-bottom a:hover {
            color: #ffffff;
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 0;
            }
            .nav-links a {
                padding: 0.4rem 0.6rem;
                font-size: 0.85rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-skew-img {
                transform: none;
            }
            section {
                padding: 3rem 0;
            }
            .stat-number {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .hamburger-btn {
                display: block;
            }
            .nav-links {
                display: none;
            }
            .nav-logo {
                font-size: 1.1rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .stat-number {
                font-size: 1.9rem;
            }
            .process-step {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-skew-img {
                transform: none;
                margin-top: 1.5rem;
            }
            section {
                padding: 2.5rem 0;
            }
        }

        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .top-info-bar .container {
                flex-direction: column;
                text-align: center;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .btn-primary,
            .btn-secondary,
            .btn-outline {
                padding: 0.6rem 1.3rem;
                font-size: 0.9rem;
            }
            section {
                padding: 2rem 0;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #0A4C8A;
            --primary-light: #E8F1FA;
            --primary-dark: #06305A;
            --secondary: #E89C0D;
            --secondary-hover: #c8850b;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text-primary: #1E293B;
            --text-secondary: #475569;
            --border: #E2E8F0;
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
            --radius: 12px;
            --radius-sm: 8px;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            margin: 0;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        button,
        input,
        textarea {
            font-family: var(--font-stack);
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        /* Top Info Bar */
        .top-info-bar {
            background-color: var(--primary-dark);
            color: #ffffff;
            font-size: 0.85rem;
            padding: 0.5rem 0;
        }
        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .top-info-bar .domain-text {
            font-weight: 500;
            letter-spacing: 0.02em;
        }
        .top-info-bar .action-links a {
            color: #ffffff;
            margin-left: 1rem;
            font-size: 0.85rem;
            transition: opacity 0.2s;
            cursor: pointer;
        }
        .top-info-bar .action-links a:hover {
            opacity: 0.8;
        }

        /* Main Navigation */
        .main-nav {
            background-color: #ffffff;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0.75rem 0;
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.03em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        .nav-logo i {
            font-size: 1.5rem;
            color: var(--secondary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            flex-wrap: wrap;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-primary);
            transition: all 0.2s ease;
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0.9rem;
            right: 0.9rem;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-btn {
            background-color: var(--secondary);
            color: #ffffff !important;
            padding: 0.5rem 1.2rem !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            transition: all 0.2s ease !important;
        }
        .nav-cta-btn:hover {
            background-color: var(--secondary-hover) !important;
            color: #ffffff !important;
        }

        /* Hamburger */
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            cursor: pointer;
            color: var(--primary);
            padding: 0.4rem;
            line-height: 1;
        }
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.55);
            z-index: 2000;
            justify-content: flex-end;
        }
        .mobile-menu-overlay.open {
            display: flex;
        }
        .mobile-menu-panel {
            background: #fff;
            width: 280px;
            height: 100%;
            padding: 2rem 1.5rem;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .mobile-menu-panel a {
            display: block;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-primary);
            transition: all 0.2s;
        }
        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .mobile-menu-close {
            align-self: flex-end;
            background: none;
            border: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--text-primary);
            padding: 0.3rem;
        }

        /* Section spacing */
        section {
            padding: 4rem 0;
        }

        /* Section titles */
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 56px;
            height: 3px;
            background-color: var(--primary);
            border-radius: 2px;
            margin-top: 0.5rem;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        /* Cards */
        .card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 1.5rem;
            transition: all 0.3s ease;
            border: 1px solid var(--border);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        /* Buttons */
        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
            padding: 0.75rem 1.8rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.2s ease;
            display: inline-block;
            text-align: center;
            font-size: 1rem;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
        }
        .btn-secondary-cta {
            background-color: var(--secondary);
            color: #ffffff;
            padding: 0.85rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: all 0.2s ease;
            display: inline-block;
            text-align: center;
            font-size: 1.05rem;
            letter-spacing: 0.02em;
        }
        .btn-secondary-cta:hover {
            background-color: var(--secondary-hover);
            transform: scale(1.03);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s ease;
            display: inline-block;
            text-align: center;
            font-size: 0.95rem;
        }
        .btn-outline:hover {
            background-color: var(--primary-light);
        }

        /* Badge */
        .badge {
            display: inline-block;
            padding: 0.35rem 0.85rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .badge-hot {
            background-color: #dc2626;
            color: #fff;
        }
        .badge-new {
            background-color: var(--secondary);
            color: #fff;
        }
        .badge-popular {
            background-color: var(--primary);
            color: #fff;
        }

        /* Hero */
        .hero-section {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            min-height: 520px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 76, 138, 0.88) 0%, rgba(6, 48, 90, 0.7) 60%, rgba(0, 0, 0, 0.4) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            color: #ffffff;
            max-width: 700px;
        }
        .hero-badge-wrap {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 1.2rem;
            flex-wrap: wrap;
        }
        .hero-burst-badge {
            background: #ff3b3b;
            color: #fff;
            padding: 0.4rem 1rem;
            border-radius: 4px;
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.04em;
            animation: pulse-badge 2s ease-in-out infinite;
            position: relative;
        }
        .hero-burst-badge::after {
            content: '';
            position: absolute;
            top: -6px;
            right: -8px;
            width: 16px;
            height: 16px;
            background: #ff3b3b;
            border-radius: 50%;
            opacity: 0.6;
            animation: burst-dot 1.5s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.04);
            }
        }
        @keyframes burst-dot {
            0%,
            100% {
                opacity: 0.6;
                transform: scale(1);
            }
            50% {
                opacity: 0;
                transform: scale(2.2);
            }
        }
        .hero-title {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }
        .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 560px;
        }
        .hero-cta-group {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        /* Tip cards */
        .tip-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 1.8rem;
            border-left: 4px solid var(--primary);
            transition: all 0.3s ease;
            position: relative;
        }
        .tip-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .tip-card .tip-number {
            position: absolute;
            top: -14px;
            left: 1.2rem;
            background: var(--secondary);
            color: #fff;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
        }

        /* FAQ */
        .faq-item {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 0.75rem;
            border: 1px solid var(--border);
            background: #fff;
        }
        .faq-question {
            padding: 1rem 1.5rem;
            cursor: pointer;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #fff;
            transition: background 0.2s;
            user-select: none;
            color: var(--text-primary);
        }
        .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-answer {
            padding: 0 1.5rem 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question {
            background: var(--primary-light);
            color: var(--primary);
        }
        .faq-icon {
            transition: transform 0.3s ease;
            font-size: 1.1rem;
            color: var(--primary);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        /* Step timeline */
        .step-item {
            display: flex;
            gap: 1.5rem;
            align-items: flex-start;
            padding: 1.5rem 0;
            border-bottom: 1px solid var(--border);
            position: relative;
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-circle {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
        }
        .step-content h4 {
            font-weight: 700;
            margin-bottom: 0.3rem;
            color: var(--text-primary);
        }
        .step-content p {
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /* Stat bar */
        .stat-item {
            text-align: center;
            padding: 1.5rem;
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-top: 0.4rem;
        }

        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            color: #fff;
            text-align: center;
            padding: 4rem 0;
            border-radius: var(--radius);
            margin: 2rem 0;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 2rem;
            font-size: 1.05rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Footer */
        .site-footer {
            background-color: #1a1f2e;
            color: #cbd5e1;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .site-footer h4 {
            color: #fff;
            font-weight: 600;
            margin-bottom: 1rem;
            font-size: 1.05rem;
        }
        .site-footer a {
            color: #cbd5e1;
            transition: color 0.2s;
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.82rem;
            color: #94a3b8;
            line-height: 2;
        }
        .footer-bottom a {
            color: #94a3b8;
            margin: 0 0.3rem;
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-section {
                min-height: 420px;
            }
            .nav-links {
                gap: 0;
            }
            .nav-links a {
                padding: 0.4rem 0.6rem;
                font-size: 0.85rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .hamburger-btn {
                display: block;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-section {
                min-height: 380px;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            section {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .stat-number {
                font-size: 2rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .hero-cta-group {
                flex-direction: column;
                gap: 0.7rem;
            }
            .btn-secondary-cta,
            .btn-outline {
                width: 100%;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.45rem;
            }
            .hero-section {
                min-height: 340px;
            }
            .hero-burst-badge {
                font-size: 0.75rem;
                padding: 0.3rem 0.7rem;
            }
            .card {
                padding: 1rem;
            }
            .tip-card {
                padding: 1.2rem;
            }
            .step-item {
                flex-direction: column;
                gap: 0.8rem;
            }
            .step-circle {
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #0A4C8A;
            --primary-light: #E8F1FA;
            --primary-dark: #06305A;
            --secondary: #E89C0D;
            --secondary-hover: #c8850b;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text-primary: #1E293B;
            --text-secondary: #475569;
            --border: #E2E8F0;
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
            --radius: 12px;
            --radius-sm: 8px;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            margin: 0;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        button,
        input,
        textarea {
            font-family: var(--font-stack);
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        /* Top Info Bar */
        .top-info-bar {
            background-color: var(--primary-dark);
            color: #ffffff;
            font-size: 0.85rem;
            padding: 0.5rem 0;
        }
        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .top-info-bar .domain-text {
            font-weight: 500;
            letter-spacing: 0.02em;
        }
        .top-info-bar .action-links a {
            color: #ffffff;
            margin-left: 1rem;
            font-size: 0.85rem;
            transition: opacity 0.2s;
        }
        .top-info-bar .action-links a:hover {
            opacity: 0.8;
        }

        /* Main Navigation */
        .main-nav {
            background-color: #ffffff;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0.75rem 0;
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.03em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        .nav-logo i {
            font-size: 1.5rem;
            color: var(--secondary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            flex-wrap: wrap;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-primary);
            transition: all 0.2s ease;
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0.9rem;
            right: 0.9rem;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-btn {
            background-color: var(--secondary);
            color: #ffffff !important;
            padding: 0.5rem 1.2rem !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            transition: all 0.2s ease !important;
        }
        .nav-cta-btn:hover {
            background-color: var(--secondary-hover) !important;
            color: #ffffff !important;
        }

        /* Hamburger */
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            cursor: pointer;
            color: var(--primary);
            padding: 0.4rem;
            line-height: 1;
        }
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.55);
            z-index: 2000;
            justify-content: flex-end;
        }
        .mobile-menu-overlay.open {
            display: flex;
        }
        .mobile-menu-panel {
            background: #fff;
            width: 280px;
            height: 100%;
            padding: 2rem 1.5rem;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .mobile-menu-panel a {
            display: block;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-primary);
            transition: all 0.2s;
        }
        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .mobile-menu-close {
            align-self: flex-end;
            background: none;
            border: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--text-primary);
            padding: 0.3rem;
        }

        /* Section spacing */
        section {
            padding: 3.5rem 0;
        }

        /* Section titles */
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background-color: var(--primary);
            margin-top: 0.5rem;
            border-radius: 2px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            max-width: 700px;
        }

        /* Card base */
        .card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        /* Buttons */
        .btn-primary {
            display: inline-block;
            background-color: var(--primary);
            color: #ffffff;
            padding: 0.75rem 1.8rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.2s ease;
            text-align: center;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #ffffff;
        }
        .btn-primary:focus {
            outline: 3px solid rgba(10, 76, 138, 0.3);
            outline-offset: 2px;
        }
        .btn-secondary {
            display: inline-block;
            background-color: transparent;
            color: var(--primary);
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: all 0.2s ease;
            text-align: center;
        }
        .btn-secondary:hover {
            background-color: var(--primary-light);
        }
        .btn-cta {
            display: inline-block;
            background-color: var(--secondary);
            color: #ffffff;
            padding: 0.85rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: all 0.2s ease;
            text-align: center;
            font-size: 1.05rem;
        }
        .btn-cta:hover {
            background-color: var(--secondary-hover);
            color: #ffffff;
        }
        .btn-cta:focus {
            outline: 3px solid rgba(232, 156, 13, 0.4);
            outline-offset: 2px;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--primary);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        .breadcrumb .separator {
            color: var(--border);
            user-select: none;
        }

        /* Article list card */
        .article-card {
            display: flex;
            gap: 1.5rem;
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 1.5rem;
            transition: all 0.3s ease;
            overflow: hidden;
            align-items: flex-start;
        }
        .article-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .article-card .article-img {
            flex-shrink: 0;
            width: 220px;
            height: 140px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            object-fit: cover;
        }
        .article-card .article-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .article-card .article-body {
            flex: 1;
            min-width: 0;
        }
        .article-card .article-date {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 0.4rem;
        }
        .article-card .article-title {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }
        .article-card .article-title a {
            color: inherit;
            transition: color 0.2s;
        }
        .article-card .article-title a:hover {
            color: var(--primary);
        }
        .article-card .article-excerpt {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0.75rem;
        }
        .article-card .read-more {
            font-weight: 600;
            color: var(--primary);
            font-size: 0.9rem;
            transition: color 0.2s;
        }
        .article-card .read-more:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        /* Sidebar */
        .sidebar {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 1.5rem;
        }
        .sidebar .sidebar-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
            padding-bottom: 0.6rem;
            border-bottom: 2px solid var(--primary);
        }
        .sidebar .search-box {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
        }
        .sidebar .search-box input {
            flex: 1;
            padding: 0.65rem 0.9rem;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            transition: all 0.2s;
            outline: none;
        }
        .sidebar .search-box input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(10, 76, 138, 0.1);
        }
        .sidebar .search-box button {
            background-color: var(--primary);
            color: #fff;
            border: none;
            padding: 0.65rem 1rem;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: background-color 0.2s;
        }
        .sidebar .search-box button:hover {
            background-color: var(--primary-dark);
        }
        .sidebar .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
        }
        .sidebar .tag-cloud .tag {
            display: inline-block;
            padding: 0.35rem 0.8rem;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: all 0.2s;
            cursor: pointer;
        }
        .sidebar .tag-cloud .tag:hover {
            background-color: var(--primary);
            color: #fff;
        }
        .sidebar .news-mini-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar .news-mini-list li {
            padding: 0.6rem 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.9rem;
            line-height: 1.4;
        }
        .sidebar .news-mini-list li:last-child {
            border-bottom: none;
        }
        .sidebar .news-mini-list li a {
            color: var(--text-primary);
            transition: color 0.2s;
        }
        .sidebar .news-mini-list li a:hover {
            color: var(--primary);
        }
        .sidebar .news-mini-list li .mini-date {
            font-size: 0.78rem;
            color: var(--text-secondary);
            display: block;
            margin-top: 0.15rem;
        }

        /* Pagination */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 0.4rem;
            flex-wrap: wrap;
            margin-top: 2.5rem;
        }
        .pagination .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.9rem;
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text-primary);
            cursor: pointer;
            transition: all 0.2s;
        }
        .pagination .page-btn:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }
        .pagination .page-btn.active {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 700;
        }
        .pagination .page-btn.disabled {
            opacity: 0.4;
            cursor: not-allowed;
            pointer-events: none;
        }

        /* Strategy comparison cards */
        .strategy-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 1.8rem;
            transition: all 0.3s ease;
            border-left: 4px solid var(--primary);
            position: relative;
        }
        .strategy-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .strategy-card.featured {
            border-left-color: var(--secondary);
        }
        .strategy-card .strategy-badge {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background-color: var(--secondary);
            color: #fff;
            padding: 0.25rem 0.7rem;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
        }

        /* FAQ */
        .faq-item {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 0.75rem;
            transition: all 0.2s;
        }
        .faq-item summary {
            padding: 1rem 1.5rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: var(--primary-light);
            color: var(--text-primary);
            border-radius: var(--radius-sm);
            transition: all 0.2s;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            transition: transform 0.3s;
        }
        .faq-item[open] summary::after {
            content: '−';
            transform: rotate(180deg);
        }
        .faq-item[open] summary {
            background-color: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
        }
        .faq-item[open] summary::after {
            color: #fff;
        }
        .faq-item .faq-content {
            padding: 1rem 1.5rem;
            background-color: #fff;
            border: 1px solid var(--border);
            border-top: none;
            border-radius: 0 0 var(--radius-sm) var(--radius-sm);
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-item:nth-child(even) summary {
            background-color: #fff;
            border: 1px solid var(--border);
        }
        .faq-item:nth-child(even)[open] summary {
            background-color: var(--primary);
            border-color: var(--primary);
        }

        /* Footer */
        .site-footer {
            background-color: #1a1f2e;
            color: #cbd5e1;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .site-footer h4 {
            color: #ffffff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1rem;
            position: relative;
            padding-bottom: 0.5rem;
        }
        .site-footer h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background-color: var(--secondary);
            border-radius: 1px;
        }
        .site-footer a {
            color: #cbd5e1;
            transition: color 0.2s;
        }
        .site-footer a:hover {
            color: #ffffff;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.82rem;
            color: #94a3b8;
            line-height: 2;
        }
        .site-footer .footer-bottom a {
            color: #94a3b8;
            margin: 0 0.3rem;
        }
        .site-footer .footer-bottom a:hover {
            color: #ffffff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 0.1rem;
            }
            .nav-links a {
                padding: 0.4rem 0.6rem;
                font-size: 0.85rem;
            }
            .nav-logo {
                font-size: 1.15rem;
            }
            .article-card {
                flex-direction: column;
            }
            .article-card .article-img {
                width: 100%;
                height: 180px;
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .strategy-card {
                padding: 1.2rem;
            }
        }

        @media (max-width: 768px) {
            .hamburger-btn {
                display: block;
            }
            .nav-links {
                display: none;
            }
            .main-nav .container {
                flex-wrap: wrap;
            }
            section {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .article-card {
                flex-direction: column;
                padding: 1rem;
            }
            .article-card .article-img {
                width: 100%;
                height: 160px;
            }
            .article-card .article-title {
                font-size: 1rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .pagination .page-btn {
                width: 35px;
                height: 35px;
                font-size: 0.8rem;
            }
            .sidebar {
                margin-top: 2rem;
            }
            .top-info-bar .container {
                flex-direction: column;
                text-align: center;
            }
            .top-info-bar .action-links a {
                margin-left: 0.5rem;
                margin-right: 0.5rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 0.6rem;
                padding-right: 0.6rem;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .btn-primary,
            .btn-cta,
            .btn-secondary {
                padding: 0.6rem 1.2rem;
                font-size: 0.9rem;
            }
            .article-card .article-img {
                height: 140px;
            }
            .article-card .article-excerpt {
                font-size: 0.85rem;
            }
            .pagination .page-btn {
                width: 30px;
                height: 30px;
                font-size: 0.75rem;
            }
            .strategy-card {
                padding: 1rem;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #0A4C8A;
            --primary-light: #E8F1FA;
            --primary-dark: #06305A;
            --secondary: #E89C0D;
            --secondary-hover: #c8850b;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text-primary: #1E293B;
            --text-secondary: #475569;
            --border: #E2E8F0;
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
            --radius: 12px;
            --radius-sm: 8px;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --dark-bg: #0f172a;
            --dark-card: #1e293b;
            --dark-border: #334155;
            --accent-glow: rgba(232, 156, 13, 0.3);
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            margin: 0;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease, background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
        }

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

        button,
        input,
        textarea {
            font-family: var(--font-stack);
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        /* Top Info Bar */
        .top-info-bar {
            background-color: var(--primary-dark);
            color: #ffffff;
            font-size: 0.85rem;
            padding: 0.45rem 0;
            z-index: 1001;
            position: relative;
        }
        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .top-info-bar .domain-text {
            font-weight: 500;
            letter-spacing: 0.02em;
        }
        .top-info-bar .action-links a {
            color: #ffffff;
            margin-left: 1rem;
            font-size: 0.85rem;
            transition: opacity 0.2s;
        }
        .top-info-bar .action-links a:hover {
            opacity: 0.8;
        }

        /* Main Navigation */
        .main-nav {
            background-color: #ffffff;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0.75rem 0;
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.03em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        .nav-logo i {
            font-size: 1.5rem;
            color: var(--secondary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            flex-wrap: wrap;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-primary);
            transition: all 0.2s ease;
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0.9rem;
            right: 0.9rem;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-btn {
            background-color: var(--secondary);
            color: #ffffff !important;
            padding: 0.5rem 1.2rem !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            transition: all 0.2s ease !important;
        }
        .nav-cta-btn:hover {
            background-color: var(--secondary-hover) !important;
            color: #ffffff !important;
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            cursor: pointer;
            color: var(--primary);
            padding: 0.4rem;
            line-height: 1;
        }
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.55);
            z-index: 2000;
            justify-content: flex-end;
        }
        .mobile-menu-overlay.open {
            display: flex;
        }
        .mobile-menu-panel {
            background: #fff;
            width: 280px;
            height: 100%;
            padding: 2rem 1.5rem;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .mobile-menu-panel a {
            display: block;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-primary);
            transition: all 0.2s;
        }
        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .mobile-menu-close {
            align-self: flex-end;
            background: none;
            border: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--text-primary);
            padding: 0.3rem;
        }

        /* Section base */
        section {
            padding: 4rem 0;
        }

        /* Dark Hero */
        .dark-hero {
            position: relative;
            background: linear-gradient(135deg, #0a0f1e 0%, #0f1b35 30%, #1a2744 60%, #0d1528 100%);
            min-height: 520px;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding: 5rem 0 4rem;
        }
        .dark-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(232, 156, 13, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .dark-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -15%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(10, 76, 138, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .dark-hero .hero-bg-img {
            position: absolute;
            right: 0;
            top: 0;
            width: 50%;
            height: 100%;
            object-fit: cover;
            opacity: 0.35;
            mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.05) 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.05) 100%);
        }
        .dark-hero .container {
            position: relative;
            z-index: 2;
        }
        .dark-hero .breadcrumb {
            display: flex;
            gap: 0.5rem;
            align-items: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
        }
        .dark-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            transition: color 0.2s;
        }
        .dark-hero .breadcrumb a:hover {
            color: var(--secondary);
        }
        .dark-hero .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.4);
        }
        .dark-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
            line-height: 1.25;
        }
        .dark-hero .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 2rem;
        }
        .dark-hero .hero-cta-wrap {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .dark-hero .hero-cta-primary {
            background: var(--secondary);
            color: #1a1a1a;
            padding: 0.85rem 2rem;
            border-radius: var(--radius);
            font-weight: 700;
            font-size: 1.05rem;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border: none;
            cursor: pointer;
        }
        .dark-hero .hero-cta-primary:hover {
            background: #f5b830;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(232, 156, 13, 0.4);
        }
        .dark-hero .hero-cta-secondary {
            background: transparent;
            color: #ffffff;
            padding: 0.85rem 2rem;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 1.05rem;
            border: 2px solid rgba(255, 255, 255, 0.4);
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .dark-hero .hero-cta-secondary:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
        }
        .dark-hero .heat-badges {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
            margin-top: 2rem;
        }
        .heat-badge {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 50px;
            padding: 0.5rem 1.2rem;
            color: #ffffff;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            backdrop-filter: blur(4px);
        }
        .heat-badge .badge-icon {
            color: var(--secondary);
            font-size: 1rem;
        }
        .heat-badge .badge-count {
            font-weight: 700;
            color: var(--secondary);
        }

        /* Stats strip */
        .stats-strip {
            background: #ffffff;
            border-bottom: 1px solid var(--border);
            padding: 1.5rem 0;
        }
        .stats-strip .container {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 2rem;
        }
        .stat-item {
            text-align: center;
            flex: 1;
            min-width: 120px;
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 0.3rem;
        }

        /* Tag cloud section */
        .tag-cloud-section {
            background: var(--bg);
            padding: 2.5rem 0;
        }
        .tag-cloud-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            justify-content: center;
        }
        .tag-pill {
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 0.55rem 1.3rem;
            font-size: 0.9rem;
            color: var(--text-primary);
            transition: all 0.25s ease;
            cursor: pointer;
            font-weight: 500;
        }
        .tag-pill:hover {
            background: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .tag-pill.hot {
            background: #fff8e6;
            border-color: var(--secondary);
            color: #b87a08;
            font-weight: 600;
        }
        .tag-pill.hot:hover {
            background: var(--secondary);
            color: #ffffff;
            border-color: var(--secondary);
        }

        /* Main content area */
        .content-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 2.5rem;
            align-items: start;
        }
        .article-list-col {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .article-card {
            background: #ffffff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            display: flex;
            flex-direction: row;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .article-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .article-card .card-img-wrap {
            flex: 0 0 240px;
            min-height: 180px;
            overflow: hidden;
            position: relative;
        }
        .article-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .article-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .article-card .card-date-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0, 0, 0, 0.7);
            color: #ffffff;
            padding: 0.3rem 0.7rem;
            border-radius: 4px;
            font-size: 0.78rem;
            font-weight: 500;
            z-index: 1;
        }
        .article-card .card-body {
            flex: 1;
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .article-card .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card .card-excerpt {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 1rem;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card .card-readmore {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            transition: gap 0.2s;
            align-self: flex-start;
        }
        .article-card .card-readmore:hover {
            gap: 0.6rem;
            color: var(--primary-dark);
        }

        /* Sidebar */
        .sidebar-col {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            position: sticky;
            top: 100px;
        }
        .sidebar-card {
            background: #ffffff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 1.5rem;
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
            padding-bottom: 0.6rem;
            border-bottom: 2px solid var(--primary-light);
        }
        .sidebar-search {
            display: flex;
            gap: 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1px solid var(--border);
        }
        .sidebar-search input {
            flex: 1;
            padding: 0.65rem 1rem;
            border: none;
            outline: none;
            font-size: 0.9rem;
            background: #f9fafb;
        }
        .sidebar-search input:focus {
            background: #fff;
        }
        .sidebar-search button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 0.65rem 1rem;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 0.9rem;
        }
        .sidebar-search button:hover {
            background: var(--primary-dark);
        }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .sidebar-tag {
            background: var(--primary-light);
            color: var(--primary);
            padding: 0.35rem 0.8rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            transition: all 0.2s;
            cursor: pointer;
        }
        .sidebar-tag:hover {
            background: var(--primary);
            color: #fff;
        }
        .sidebar-news-item {
            display: flex;
            gap: 0.75rem;
            padding: 0.7rem 0;
            border-bottom: 1px solid #f1f5f9;
            transition: all 0.2s;
            cursor: pointer;
        }
        .sidebar-news-item:last-child {
            border-bottom: none;
        }
        .sidebar-news-item:hover {
            color: var(--primary);
        }
        .sidebar-news-item .sn-date {
            font-size: 0.75rem;
            color: #94a3b8;
            white-space: nowrap;
            min-width: 60px;
        }
        .sidebar-news-item .sn-title {
            font-size: 0.85rem;
            line-height: 1.4;
            font-weight: 500;
        }

        /* Pagination */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            gap: 0.4rem;
            margin-top: 2rem;
            flex-wrap: wrap;
        }
        .pagination-wrap .page-btn {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text-primary);
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
        }
        .pagination-wrap .page-btn:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }
        .pagination-wrap .page-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 700;
        }
        .pagination-wrap .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* Deep content */
        .deep-content-section {
            background: #ffffff;
            padding: 4rem 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .deep-content-section .content-prose {
            max-width: 860px;
            margin: 0 auto;
        }
        .deep-content-section h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1.5rem;
            padding-bottom: 0.6rem;
            border-bottom: 2px solid var(--primary);
            display: inline-block;
        }
        .deep-content-section h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--primary-dark);
            margin-top: 2rem;
            margin-bottom: 0.75rem;
        }
        .deep-content-section p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 1.2rem;
        }
        .deep-content-section .highlight-box {
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            padding: 1.2rem 1.5rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.5rem 0;
            font-size: 0.95rem;
            color: var(--primary-dark);
            line-height: 1.7;
        }

        /* Comparison cards */
        .comparison-section {
            background: var(--bg);
            padding: 4rem 0;
        }
        .comparison-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
        }
        .comparison-card {
            background: #ffffff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 2rem;
            transition: all 0.3s ease;
            border-top: 4px solid transparent;
        }
        .comparison-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .comparison-card.card-gold {
            border-top-color: var(--secondary);
        }
        .comparison-card.card-blue {
            border-top-color: var(--primary);
        }
        .comparison-card.card-green {
            border-top-color: #10b981;
        }
        .comparison-card .comp-icon {
            font-size: 2.2rem;
            margin-bottom: 1rem;
        }
        .comparison-card h4 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .comparison-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .comparison-card .comp-stat {
            display: flex;
            align-items: baseline;
            gap: 0.4rem;
            margin-top: 1rem;
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
        }
        .comparison-card .comp-stat .unit {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
        }

        /* Case cards */
        .case-section {
            background: #ffffff;
            padding: 4rem 0;
        }
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 1.5rem;
        }
        .case-card {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            background: #fff;
        }
        .case-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .case-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .case-card .case-body {
            padding: 1.5rem;
        }
        .case-card h4 {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }
        .case-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .case-card .case-tag {
            display: inline-block;
            background: #e8f5e9;
            color: #2e7d32;
            padding: 0.25rem 0.7rem;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            margin-top: 0.75rem;
        }

        /* Expert section */
        .expert-section {
            background: linear-gradient(135deg, #f0f4f9 0%, #e8eef5 100%);
            padding: 4rem 0;
        }
        .expert-card {
            background: #ffffff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 2rem;
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
        }
        .expert-card .expert-avatar {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: var(--primary-light);
            margin: 0 auto 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.2rem;
            color: var(--primary);
        }
        .expert-card h4 {
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 0.25rem;
        }
        .expert-card .expert-role {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        .expert-card blockquote {
            font-size: 1.05rem;
            font-style: italic;
            color: var(--text-primary);
            line-height: 1.8;
            border-left: 3px solid var(--secondary);
            padding-left: 1.5rem;
            text-align: left;
            margin: 0;
        }

        /* FAQ */
        .faq-section {
            background: var(--bg);
            padding: 4rem 0;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: #ffffff;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all 0.2s;
        }
        .faq-item summary {
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1rem;
            color: var(--text-primary);
            transition: background 0.2s;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            background: #fafbfc;
        }
        .faq-item summary .faq-icon {
            font-size: 1.2rem;
            color: var(--primary);
            transition: transform 0.3s;
            flex-shrink: 0;
            margin-left: 1rem;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            padding: 0 1.5rem 1.3rem;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        .faq-item:nth-child(even) {
            background: #fafcfd;
        }

        /* CTA section */
        .cta-section {
            background: var(--primary-dark);
            padding: 4rem 0;
            text-align: center;
            color: #ffffff;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 2rem;
            line-height: 1.7;
        }
        .cta-section .cta-btn-large {
            background: var(--secondary);
            color: #1a1a1a;
            padding: 1rem 2.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.3s;
            cursor: pointer;
            border: none;
        }
        .cta-section .cta-btn-large:hover {
            background: #f5b830;
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(232, 156, 13, 0.5);
        }

        /* Footer */
        .site-footer {
            background: #0f1a2e;
            color: #cbd5e1;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .site-footer h4 {
            color: #ffffff;
            font-weight: 700;
            margin-bottom: 0.8rem;
            font-size: 1rem;
        }
        .site-footer a {
            color: #94a3b8;
            transition: color 0.2s;
        }
        .site-footer a:hover {
            color: #ffffff;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.8rem;
            color: #94a3b8;
            line-height: 2;
        }
        .site-footer .footer-bottom a {
            color: #94a3b8;
        }
        .site-footer .footer-bottom a:hover {
            color: #ffffff;
        }

        /* Section title */
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .section-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        .section-header .section-subtitle {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-top: 0.5rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .content-layout {
                grid-template-columns: 1fr;
            }
            .sidebar-col {
                position: static;
                order: 3;
            }
            .article-card {
                flex-direction: column;
            }
            .article-card .card-img-wrap {
                flex: 0 0 auto;
                height: 200px;
                width: 100%;
            }
            .dark-hero h1 {
                font-size: 2.2rem;
            }
            .dark-hero .hero-bg-img {
                width: 100%;
                opacity: 0.2;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .case-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .hamburger-btn {
                display: block;
            }
            .dark-hero {
                min-height: auto;
                padding: 3rem 0;
            }
            .dark-hero h1 {
                font-size: 1.8rem;
            }
            .dark-hero .hero-subtitle {
                font-size: 1rem;
            }
            .dark-hero .heat-badges {
                gap: 0.75rem;
            }
            .heat-badge {
                font-size: 0.78rem;
                padding: 0.4rem 0.9rem;
            }
            .stats-strip .container {
                gap: 1rem;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .article-card .card-body {
                padding: 1rem;
            }
            .article-card .card-title {
                font-size: 1.05rem;
            }
            .pagination-wrap .page-btn {
                width: 34px;
                height: 34px;
                font-size: 0.8rem;
            }
            section {
                padding: 2.5rem 0;
            }
            .dark-hero .hero-cta-wrap {
                flex-direction: column;
                align-items: flex-start;
            }
            .content-prose {
                padding: 0 0.5rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .dark-hero h1 {
                font-size: 1.5rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .case-grid {
                grid-template-columns: 1fr;
            }
            .stats-strip .container {
                flex-direction: column;
                align-items: center;
            }
            .tag-cloud-wrap {
                gap: 0.5rem;
            }
            .tag-pill {
                font-size: 0.78rem;
                padding: 0.4rem 0.9rem;
            }
        }