/* roulang page: index */
:root {
            --brand-primary: #0c8ee7;
            --brand-dark: #015a9e;
            --accent-primary: #ec8b23;
            --bg-light: #f8fafc;
            --bg-muted: #f1f5f9;
            --text-dark: #0f172a;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border-light: #e2e8f0;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.06);
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-dark);
            background: #ffffff;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            transition: var(--transition-base);
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (min-width: 768px) {
            .container-custom {
                padding: 0 40px;
            }
        }

        @media (min-width: 1024px) {
            .container-custom {
                padding: 0 60px;
            }
        }

        /* header & nav */
        .top-bar {
            background: var(--text-dark);
            color: #cbd5e1;
            font-size: 0.8125rem;
            padding: 8px 0;
            letter-spacing: 0.3px;
        }

        .top-bar a {
            color: #e2e8f0;
        }

        .top-bar a:hover {
            color: #ffffff;
        }

        .main-header {
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: var(--transition-base);
        }

        .main-header.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
        }

        .nav-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--brand-dark);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--brand-primary), var(--brand-dark));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
        }

        .nav-logo span {
            background: linear-gradient(135deg, var(--brand-dark), var(--brand-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-link {
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 4px;
            position: relative;
            transition: var(--transition-base);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2.5px;
            background: var(--brand-primary);
            border-radius: 4px;
            transition: var(--transition-base);
        }

        .nav-link:hover {
            color: var(--text-dark);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--brand-dark);
            font-weight: 600;
        }

        .nav-link.active::after {
            width: 100%;
            background: var(--brand-primary);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            cursor: pointer;
            padding: 8px;
        }

        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }

            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                border-bottom: 1px solid var(--border-light);
                padding: 16px 24px;
                flex-direction: column;
                gap: 12px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
            }

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

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

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

        /* hero */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #f0f7ff 0%, #e0effe 40%, #fef8ee 100%);
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            z-index: 0;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(255, 255, 255, 0.7) 0%, transparent 70%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 0;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(12, 142, 231, 0.10);
            color: var(--brand-primary);
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 0.875rem;
            font-weight: 500;
            border: 1px solid rgba(12, 142, 231, 0.20);
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 800;
            line-height: 1.12;
            letter-spacing: -1.5px;
            color: var(--text-dark);
            margin-bottom: 24px;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--brand-primary), #6366f1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.125rem;
            color: var(--text-muted);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 36px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--brand-primary), #6366f1);
            color: #fff;
            padding: 14px 32px;
            border-radius: 60px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(12, 142, 231, 0.30);
            transition: var(--transition-base);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(12, 142, 231, 0.40);
        }

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

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--text-dark);
            padding: 14px 32px;
            border-radius: 60px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid var(--border-light);
            cursor: pointer;
            transition: var(--transition-base);
        }

        .btn-outline:hover {
            border-color: var(--brand-primary);
            color: var(--brand-primary);
            background: rgba(12, 142, 231, 0.05);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 48px;
            padding-top: 40px;
            border-top: 1px solid var(--border-light);
        }

        .hero-stat-item {
            text-align: left;
        }

        .hero-stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 0.9375rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .hero-visual {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-image-card {
            width: 100%;
            max-width: 520px;
            border-radius: 24px;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.12);
            overflow: hidden;
            transform: perspective(1000px) rotateY(-4deg);
            transition: var(--transition-base);
        }

        .hero-image-card:hover {
            transform: perspective(1000px) rotateY(-2deg) translateY(-4px);
            box-shadow: 0 32px 80px rgba(0, 0, 0, 0.16);
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: auto;
                padding: 40px 0 60px;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat-number {
                font-size: 1.5rem;
            }
            .hero-image-card {
                transform: none;
                max-width: 100%;
                margin-top: 40px;
            }
            .hero-image-card:hover {
                transform: none;
            }
        }

        /* sections */
        .section-padding {
            padding: 80px 0;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 56px 0;
            }
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(12, 142, 231, 0.08);
            color: var(--brand-primary);
            padding: 4px 16px;
            border-radius: 100px;
            font-size: 0.8125rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(1.8rem, 3.5vw, 2.8rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.5px;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 1.0625rem;
            color: var(--text-muted);
            max-width: 600px;
            line-height: 1.7;
        }

        .section-divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--brand-primary), #6366f1);
            border-radius: 4px;
            margin-top: 16px;
        }

        /* cards */
        .card-base {
            background: #ffffff;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: var(--transition-base);
            overflow: hidden;
        }

        .card-base:hover {
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
            transform: translateY(-3px);
        }

        .feature-card {
            padding: 32px 28px;
            text-align: center;
        }

        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.75rem;
            margin-bottom: 20px;
            transition: var(--transition-base);
        }

        .feature-card:hover .icon-wrap {
            transform: scale(1.05);
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 0.9375rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .cover-card {
            border-radius: var(--radius-xl);
            overflow: hidden;
            background: #fff;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: var(--transition-base);
        }

        .cover-card:hover {
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
            transform: translateY(-4px);
        }

        .cover-card .cover-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            transition: var(--transition-base);
        }

        .cover-card:hover .cover-img {
            transform: scale(1.02);
        }

        .cover-card .card-body {
            padding: 20px 24px 24px;
        }

        .cover-card .card-cat {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--brand-primary);
            text-transform: uppercase;
            letter-spacing: 0.8px;
            margin-bottom: 8px;
        }

        .cover-card .card-title {
            font-size: 1.125rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
            color: var(--text-dark);
        }

        .cover-card .card-excerpt {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cover-card .card-meta {
            font-size: 0.8125rem;
            color: var(--text-light);
            margin-top: 12px;
            display: flex;
            align-items: center;
            gap: 16px;
        }

        /* category tabs */
        .cat-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 32px;
        }

        .cat-tab {
            padding: 8px 22px;
            border-radius: 60px;
            font-size: 0.875rem;
            font-weight: 500;
            border: 1.5px solid var(--border-light);
            background: #fff;
            color: var(--text-muted);
            cursor: pointer;
            transition: var(--transition-base);
        }

        .cat-tab:hover {
            border-color: var(--brand-primary);
            color: var(--brand-primary);
            background: rgba(12, 142, 231, 0.04);
        }

        .cat-tab.active {
            border-color: var(--brand-primary);
            background: var(--brand-primary);
            color: #fff;
        }

        /* stats / data */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 24px;
        }

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

        .stat-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
        }

        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--brand-primary);
            margin-bottom: 12px;
        }

        .stat-card .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            background: linear-gradient(135deg, var(--brand-dark), var(--brand-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-card .stat-label {
            font-size: 0.9375rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* faq */
        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 20px 0;
        }

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

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 1.0625rem;
            font-weight: 600;
            color: var(--text-dark);
            padding: 4px 0;
            user-select: none;
        }

        .faq-question .faq-toggle {
            font-size: 1.25rem;
            color: var(--text-muted);
            transition: var(--transition-base);
        }

        .faq-question.open .faq-toggle {
            transform: rotate(45deg);
            color: var(--brand-primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-muted);
            font-size: 0.9375rem;
            line-height: 1.7;
        }

        .faq-answer.open {
            max-height: 400px;
            padding-top: 14px;
        }

        /* cta */
        .cta-section {
            background: linear-gradient(135deg, #f0f7ff 0%, #e0effe 50%, #fef8ee 100%);
            border-radius: 32px;
            padding: 64px 48px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            z-index: 0;
        }

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

        @media (max-width: 768px) {
            .cta-section {
                padding: 40px 24px;
                border-radius: 20px;
            }
        }

        /* footer */
        .site-footer {
            background: var(--text-dark);
            color: #94a3b8;
            padding: 60px 0 32px;
        }

        .footer-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--brand-primary), #6366f1);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
        }

        .footer-desc {
            font-size: 0.9375rem;
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-heading {
            font-size: 0.9375rem;
            font-weight: 700;
            color: #e2e8f0;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #94a3b8;
            font-size: 0.9rem;
            transition: var(--transition-base);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 40px;
            font-size: 0.8125rem;
            color: #64748b;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }

        /* breadcrumb */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

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

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

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

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

        /* news list */
        .news-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition-base);
        }

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

        .news-item:hover {
            padding-left: 8px;
        }

        .news-thumb {
            width: 120px;
            min-width: 120px;
            height: 80px;
            border-radius: 12px;
            object-fit: cover;
            background: var(--bg-muted);
        }

        .news-info {
            flex: 1;
        }

        .news-info .news-title {
            font-size: 1.0625rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
            transition: var(--transition-base);
        }

        .news-info .news-title:hover {
            color: var(--brand-primary);
        }

        .news-info .news-desc {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-info .news-meta {
            font-size: 0.8125rem;
            color: var(--text-light);
            margin-top: 8px;
            display: flex;
            align-items: center;
            gap: 16px;
        }

        @media (max-width: 640px) {
            .news-item {
                flex-direction: column;
                gap: 12px;
            }
            .news-thumb {
                width: 100%;
                height: 160px;
            }
        }

        /* etc */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            font-size: 0.9375rem;
        }

        .empty-state i {
            font-size: 2.5rem;
            color: var(--text-light);
            margin-bottom: 16px;
            display: block;
        }

        .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(12, 142, 231, 0.08);
            color: var(--brand-primary);
        }

        .tag-accent {
            background: rgba(236, 139, 35, 0.10);
            color: #b75a16;
        }

        .tag-green {
            background: rgba(34, 197, 94, 0.10);
            color: #15803d;
        }

        .scroll-hide {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }
        .scroll-hide::-webkit-scrollbar {
            display: none;
        }

/* roulang page: category1 */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --accent: #d946ef;
            --accent-light: #f0abfc;
            --bg-light: #f8fafc;
            --bg-dark: #0f172a;
            --text-dark: #1e293b;
            --text-muted: #64748b;
            --border-light: #e2e8f0;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
            --radius: 16px;
            --radius-sm: 10px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            background: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== 顶部信息条 ===== */
        .top-bar {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            font-size: 13px;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .top-bar .container-custom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px 16px;
        }

        .top-bar a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: var(--transition);
        }

        .top-bar a:hover {
            color: #fff;
        }

        /* ===== 主导航 ===== */
        .main-header {
            background: #fff;
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 50;
            box-shadow: var(--shadow-sm);
        }

        .main-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 22px;
        }

        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.3px;
        }

        .logo-text span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            text-decoration: none;
            padding: 6px 4px;
            position: relative;
            transition: var(--transition);
            border-bottom: 2px solid transparent;
        }

        .nav-link:hover {
            color: var(--text-dark);
        }

        .nav-link.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-dark);
            cursor: pointer;
            padding: 8px;
        }

        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }

            .nav-desktop {
                display: none !important;
            }

            .nav-mobile-open {
                display: flex !important;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                padding: 16px 24px;
                gap: 12px;
            }

            .nav-mobile-open .nav-link {
                padding: 10px 0;
                border-bottom: none;
            }

            .nav-mobile-open .nav-link.active {
                border-bottom: none;
                color: var(--primary);
            }
        }

        @media (max-width: 480px) {
            .logo-text {
                font-size: 18px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 18px;
            }
            .main-header .container-custom {
                height: 60px;
            }
            .top-bar {
                font-size: 12px;
                padding: 6px 0;
            }
        }

        /* ===== 通用组件 ===== */
        .section-padding {
            padding: 80px 0;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
        }

        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 640px;
            line-height: 1.7;
        }

        @media (max-width: 640px) {
            .section-title {
                font-size: 26px;
            }
            .section-subtitle {
                font-size: 16px;
            }
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            text-decoration: none;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            line-height: 1.2;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #1d4ed8);
            color: #fff;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(37, 99, 235, 0.45);
        }

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

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--accent), #c026d3);
            color: #fff;
            box-shadow: 0 4px 15px rgba(217, 70, 239, 0.35);
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(217, 70, 239, 0.45);
        }

        .card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            overflow: hidden;
        }

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

        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
        }

        .badge-accent {
            background: rgba(217, 70, 239, 0.1);
            color: var(--accent);
        }

        .badge-green {
            background: rgba(16, 185, 129, 0.1);
            color: #10b981;
        }

        /* ===== 横幅 Banner ===== */
        .banner-section {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            overflow: hidden;
        }

        .banner-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }

        .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 40%, rgba(30, 41, 59, 0.6) 100%);
        }

        .banner-content {
            position: relative;
            z-index: 2;
            padding: 60px 0;
            max-width: 720px;
        }

        .banner-content h1 {
            font-size: 48px;
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
        }

        .banner-content p {
            font-size: 20px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.7;
            margin-bottom: 32px;
        }

        .banner-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
        }

        .banner-breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: var(--transition);
        }

        .banner-breadcrumb a:hover {
            color: #fff;
        }

        .banner-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.3);
        }

        @media (max-width: 768px) {
            .banner-section {
                min-height: 320px;
            }
            .banner-content h1 {
                font-size: 32px;
            }
            .banner-content p {
                font-size: 17px;
            }
            .banner-content {
                padding: 40px 0;
            }
        }

        @media (max-width: 480px) {
            .banner-content h1 {
                font-size: 26px;
            }
            .banner-content p {
                font-size: 15px;
            }
        }

        /* ===== 指南卡片网格 ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
        }

        .guide-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            padding: 32px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .guide-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

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

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

        .guide-card .icon-box {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 18px;
            color: #fff;
        }

        .guide-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .guide-card p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .guide-card .step-count {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== 图文步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
        }

        .step-item {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
        }

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

        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 16px;
        }

        .step-item h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

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

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            transition: var(--transition);
            cursor: pointer;
        }

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

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-dark);
        }

        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 14px;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-top: 14px;
        }

        /* ===== CTA区块 ===== */
        .cta-block {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            border-radius: var(--radius);
            padding: 60px 48px;
            position: relative;
            overflow: hidden;
        }

        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }

        .cta-block * {
            position: relative;
            z-index: 1;
        }

        .cta-block h2 {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-block p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin-bottom: 28px;
        }

        @media (max-width: 640px) {
            .cta-block {
                padding: 40px 24px;
            }
            .cta-block h2 {
                font-size: 26px;
            }
            .cta-block p {
                font-size: 16px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 32px;
        }

        .site-footer .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .site-footer .footer-logo .logo-icon {
            width: 36px;
            height: 36px;
            font-size: 18px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }

        .footer-heading {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-heading::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links li {
            font-size: 14px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-links a:hover {
            color: #fff;
            transform: translateX(4px);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 40px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        @media (max-width: 640px) {
            .site-footer {
                padding: 40px 0 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 工具类 ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .bg-gradient-primary {
            background: linear-gradient(135deg, var(--primary), #1d4ed8);
        }

        .bg-gradient-accent {
            background: linear-gradient(135deg, var(--accent), #c026d3);
        }

        .shadow-card {
            box-shadow: var(--shadow-sm);
        }

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

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

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== 文章列表 ===== */
        .article-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 28px;
        }

        .article-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .article-card .card-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .article-card .card-img .badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255, 255, 255, 0.9);
            color: var(--text-dark);
            backdrop-filter: blur(4px);
        }

        .article-card .card-body {
            padding: 24px;
        }

        .article-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .article-card .card-body p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== 标签云 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-item {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            background: #fff;
            border: 1px solid var(--border-light);
            text-decoration: none;
            transition: var(--transition);
        }

        .tag-item:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(37, 99, 235, 0.05);
            transform: translateY(-1px);
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
                gap: 20px;
            }
            .article-list {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
                gap: 20px;
            }
        }

        @media (max-width: 520px) {
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .article-list {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .banner-content h1 {
                font-size: 24px;
            }
            .section-title {
                font-size: 22px;
            }
            .guide-card {
                padding: 24px 20px;
            }
        }

        /* ===== 轮播/横向滚动（轻量） ===== */
        .scroll-x {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding-bottom: 12px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }

        .scroll-x::-webkit-scrollbar {
            height: 4px;
        }

        .scroll-x::-webkit-scrollbar-track {
            background: var(--border-light);
            border-radius: 2px;
        }

        .scroll-x::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 2px;
        }

        .scroll-x .scroll-item {
            scroll-snap-align: start;
            flex: 0 0 280px;
        }

        @media (max-width: 520px) {
            .scroll-x .scroll-item {
                flex: 0 0 240px;
            }
        }

/* roulang page: article */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --accent: #d946ef;
            --bg-body: #f8fafc;
            --text-main: #1e293b;
            --text-soft: #64748b;
            --border-light: #e2e8f0;
            --radius-card: 1rem;
            --shadow-card: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif; background: var(--bg-body); color: var(--text-main); line-height: 1.7; -webkit-font-smoothing: antialiased; }
        .container-custom { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
        .site-header { background: #fff; border-bottom: 1px solid var(--border-light); position: sticky; top: 0; z-index: 100; }
        .top-bar { background: #0f172a; color: #cbd5e1; font-size: 0.8rem; padding: 0.4rem 0; }
        .top-bar .container-custom { display: flex; justify-content: flex-end; align-items: center; gap: 1.5rem; }
        .top-bar a { color: #94a3b8; transition: var(--transition); }
        .top-bar a:hover { color: #fff; }
        .header-main { display: flex; align-items: center; justify-content: space-between; padding: 0.75rem 0; }
        .logo-wrap { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; }
        .logo-icon { width: 2.4rem; height: 2.4rem; background: linear-gradient(135deg, var(--primary), var(--accent)); border-radius: 0.6rem; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 800; font-size: 1.2rem; }
        .logo-text { font-size: 1.35rem; font-weight: 700; color: #0f172a; letter-spacing: -0.01em; }
        .nav-link { position: relative; font-size: 0.95rem; font-weight: 500; color: #475569; padding: 0.4rem 0; transition: var(--transition); text-decoration: none; }
        .nav-link::after { content: ''; position: absolute; left: 0; bottom: -2px; width: 0; height: 2.5px; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 2px; transition: var(--transition); }
        .nav-link:hover { color: var(--primary); }
        .nav-link:hover::after { width: 100%; }
        .nav-link.active { color: var(--primary); }
        .nav-link.active::after { width: 100%; }
        .mobile-toggle { display: flex; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; border: none; }
        .mobile-toggle span { width: 26px; height: 2.5px; background: #334155; border-radius: 2px; transition: var(--transition); }
        .article-hero { position: relative; padding: 3rem 0 2rem; background: linear-gradient(135deg, #eef2ff 0%, #f5f3ff 100%); overflow: hidden; }
        .article-hero::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.08; pointer-events: none; }
        .article-hero .container-custom { position: relative; z-index: 2; }
        .breadcrumb { display: flex; flex-wrap: wrap; gap: 0.4rem; font-size: 0.85rem; color: var(--text-soft); margin-bottom: 1.5rem; }
        .breadcrumb a { color: var(--text-soft); text-decoration: none; transition: var(--transition); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb span { color: #94a3b8; }
        .article-category { display: inline-block; background: linear-gradient(135deg, var(--primary), #7c3aed); color: #fff; font-size: 0.8rem; font-weight: 600; padding: 0.25rem 1rem; border-radius: 20px; margin-bottom: 1rem; }
        .article-title { font-size: clamp(1.6rem, 4vw, 2.6rem); font-weight: 800; color: #0f172a; line-height: 1.25; margin-bottom: 1rem; letter-spacing: -0.01em; }
        .article-meta { display: flex; flex-wrap: wrap; gap: 1.2rem; font-size: 0.9rem; color: var(--text-soft); margin-bottom: 1rem; }
        .article-meta i { margin-right: 0.3rem; }
        .article-body { padding: 2.5rem 0 3rem; }
        .article-main { background: #fff; border-radius: var(--radius-card); box-shadow: var(--shadow-card); padding: 2.5rem; overflow: hidden; }
        .article-cover { width: 100%; border-radius: 0.75rem; margin-bottom: 2rem; object-fit: cover; aspect-ratio: 16/9; box-shadow: 0 4px 16px rgba(0,0,0,0.06); }
        .article-content { font-size: 1.05rem; line-height: 1.85; color: #334155; }
        .article-content p { margin-bottom: 1.4rem; }
        .article-content h2 { font-size: 1.5rem; font-weight: 700; margin: 2rem 0 1rem; color: #0f172a; }
        .article-content h3 { font-size: 1.2rem; font-weight: 600; margin: 1.6rem 0 0.8rem; color: #1e293b; }
        .article-content ul, .article-content ol { padding-left: 1.6rem; margin-bottom: 1.4rem; }
        .article-content li { margin-bottom: 0.4rem; }
        .article-content img { max-width: 100%; border-radius: 0.75rem; margin: 1.6rem auto; display: block; box-shadow: 0 4px 16px rgba(0,0,0,0.06); }
        .article-content blockquote { border-left: 4px solid var(--primary); background: #f1f5f9; padding: 1rem 1.5rem; margin: 1.4rem 0; border-radius: 0 0.5rem 0.5rem 0; color: #475569; }
        .article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
        .article-content a:hover { color: var(--primary-dark); }
        .article-tags { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--border-light); }
        .tag { display: inline-block; background: #f1f5f9; color: #475569; font-size: 0.8rem; padding: 0.3rem 0.9rem; border-radius: 20px; text-decoration: none; transition: var(--transition); }
        .tag:hover { background: var(--primary); color: #fff; }
        .share-bar { display: flex; align-items: center; gap: 0.8rem; margin-top: 1.5rem; padding-top: 1.2rem; border-top: 1px solid var(--border-light); }
        .share-bar span { font-size: 0.9rem; color: var(--text-soft); }
        .share-btn { width: 2.4rem; height: 2.4rem; border-radius: 50%; background: #f1f5f9; display: inline-flex; align-items: center; justify-content: center; color: #64748b; text-decoration: none; transition: var(--transition); }
        .share-btn:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .article-nav { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--border-light); }
        .article-nav a { color: var(--primary); text-decoration: none; font-weight: 500; transition: var(--transition); display: flex; align-items: center; gap: 0.5rem; }
        .article-nav a:hover { color: var(--primary-dark); gap: 0.8rem; }
        .related-section { padding: 3rem 0; background: #fff; }
        .section-title { font-size: 1.6rem; font-weight: 700; color: #0f172a; margin-bottom: 2rem; position: relative; display: inline-block; }
        .section-title::after { content: ''; display: block; width: 50%; height: 3px; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 2px; margin-top: 0.4rem; }
        .related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
        .related-card { background: #fff; border: 1px solid var(--border-light); border-radius: var(--radius-card); overflow: hidden; transition: var(--transition); text-decoration: none; color: inherit; display: block; }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: transparent; }
        .related-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
        .related-card-body { padding: 1.2rem 1.4rem 1.4rem; }
        .related-card-body h3 { font-size: 1.05rem; font-weight: 600; color: #0f172a; margin-bottom: 0.4rem; line-height: 1.4; }
        .related-card-body p { font-size: 0.88rem; color: var(--text-soft); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .meta { font-size: 0.78rem; color: #94a3b8; margin-top: 0.6rem; display: flex; gap: 0.8rem; }
        .faq-section { padding: 3.5rem 0; background: var(--bg-body); }
        .faq-grid { display: grid; gap: 1rem; max-width: 800px; }
        .faq-item { background: #fff; border-radius: 0.75rem; border: 1px solid var(--border-light); overflow: hidden; transition: var(--transition); }
        .faq-item:hover { border-color: var(--primary); }
        .faq-question { padding: 1.2rem 1.5rem; font-weight: 600; color: #0f172a; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 1rem; font-size: 1rem; background: none; border: none; width: 100%; text-align: left; }
        .faq-question i { color: var(--primary); transition: var(--transition); font-size: 0.9rem; }
        .faq-answer { padding: 0 1.5rem 1.2rem; color: #475569; font-size: 0.95rem; line-height: 1.7; display: none; }
        .faq-item.open .faq-answer { display: block; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .cta-section { padding: 3.5rem 0; background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%); color: #fff; text-align: center; }
        .cta-section h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 0.8rem; }
        .cta-section p { color: #94a3b8; max-width: 600px; margin: 0 auto 1.8rem; font-size: 1rem; }
        .btn { display: inline-flex; align-items: center; gap: 0.6rem; padding: 0.75rem 2rem; border-radius: 50px; font-weight: 600; font-size: 0.95rem; text-decoration: none; transition: var(--transition); border: none; cursor: pointer; }
        .btn-primary { background: linear-gradient(135deg, var(--primary), #7c3aed); color: #fff; box-shadow: 0 4px 16px rgba(37,99,235,0.3); }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(37,99,235,0.4); }
        .btn-outline-light { border: 2px solid rgba(255,255,255,0.3); color: #fff; background: transparent; }
        .btn-outline-light:hover { background: rgba(255,255,255,0.1); border-color: #fff; transform: translateY(-2px); }
        .site-footer { background: #0f172a; color: #cbd5e1; padding: 3.5rem 0 0; }
        .footer-logo { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 1rem; font-size: 1.2rem; font-weight: 700; color: #fff; }
        .footer-logo .logo-icon { width: 2.2rem; height: 2.2rem; font-size: 1rem; }
        .footer-desc { font-size: 0.9rem; color: #94a3b8; max-width: 320px; line-height: 1.7; }
        .footer-heading { font-size: 1rem; font-weight: 600; color: #fff; margin-bottom: 1.2rem; position: relative; padding-bottom: 0.6rem; }
        .footer-heading::after { content: ''; position: absolute; bottom: 0; left: 0; width: 2rem; height: 2px; background: var(--primary); border-radius: 2px; }
        .footer-links { list-style: none; padding: 0; }
        .footer-links li { margin-bottom: 0.5rem; font-size: 0.9rem; }
        .footer-links a { color: #94a3b8; text-decoration: none; transition: var(--transition); }
        .footer-links a:hover { color: #fff; padding-left: 4px; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding: 1.5rem 0; margin-top: 2.5rem; text-align: center; font-size: 0.85rem; color: #64748b; }
        .not-found { text-align: center; padding: 4rem 2rem; }
        .not-found i { font-size: 3rem; color: var(--text-soft); margin-bottom: 1rem; }
        .not-found h2 { font-size: 1.6rem; font-weight: 700; color: #0f172a; margin-bottom: 0.6rem; }
        .not-found p { color: var(--text-soft); margin-bottom: 1.5rem; }
        @media (max-width: 768px) {
            .header-main { padding: 0.6rem 0; }
            .nav-menu { display: none; flex-direction: column; background: #fff; position: absolute; top: 100%; left: 0; right: 0; padding: 1rem 1.5rem; border-bottom: 1px solid var(--border-light); box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
            .nav-menu.open { display: flex; }
            .nav-link { padding: 0.6rem 0; font-size: 1rem; }
            .article-main { padding: 1.5rem; }
            .article-title { font-size: 1.4rem; }
            .article-meta { flex-direction: column; gap: 0.4rem; font-size: 0.82rem; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; gap: 0.5rem; }
        }
        @media (max-width: 520px) {
            .top-bar .container-custom { justify-content: center; font-size: 0.72rem; gap: 0.8rem; }
            .container-custom { padding: 0 1rem; }
            .article-hero { padding: 1.5rem 0; }
            .article-main { padding: 1rem; }
            .article-content { font-size: 0.95rem; }
            .section-title { font-size: 1.3rem; }
            .cta-section h2 { font-size: 1.4rem; }
            .footer-links li { font-size: 0.85rem; }
        }