/* roulang page: index */
:root {
            --primary: #0f1b3d;
            --primary-light: #1a2d5e;
            --primary-dark: #0a1228;
            --accent: #c9a84c;
            --accent-hover: #dbb95a;
            --accent-light: #f0e6c0;
            --red-dot: #d43f3f;
            --bg-light: #f5f6fa;
            --bg-card: #ffffff;
            --text-dark: #0f1b3d;
            --text-muted: #5a6a8a;
            --text-white: #f0f2f7;
            --border-light: #e2e5ed;
            --shadow-sm: 0 2px 8px rgba(15, 27, 61, 0.06);
            --shadow-md: 0 6px 24px rgba(15, 27, 61, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 27, 61, 0.12);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            color: var(--text-dark);
            background: var(--bg-light);
            line-height: 1.6;
            font-size: 16px;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* header & nav */
        .site-header {
            background: var(--primary);
            color: var(--text-white);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 20px rgba(15, 27, 61, 0.3);
            border-bottom: 2px solid var(--accent);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 24px;
            height: 72px;
            max-width: 1200px;
            margin: 0 auto;
            position: relative;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }
        .nav-left {
            justify-content: flex-start;
        }
        .nav-right {
            justify-content: flex-end;
        }
        .site-logo {
            font-size: 1.6rem;
            font-weight: 700;
            letter-spacing: 2px;
            color: #fff;
            padding: 0 28px;
            white-space: nowrap;
            position: relative;
            flex-shrink: 0;
        }
        .site-logo span {
            color: var(--accent);
        }
        .site-logo::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-link.active {
            color: #fff;
            background: rgba(201, 168, 76, 0.18);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--accent);
            border-radius: 1px;
        }
        .nav-cta-btn {
            background: var(--accent);
            color: var(--primary);
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            letter-spacing: 0.3px;
        }
        .nav-cta-btn:hover {
            background: var(--accent-hover);
            color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(201, 168, 76, 0.3);
        }
        .hamburger {
            display: none;
            background: transparent;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .mobile-menu {
            display: none;
            background: var(--primary-dark);
            padding: 16px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu .nav-link {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .mobile-menu .nav-cta-btn {
            display: inline-block;
            margin-top: 12px;
        }
        @media (max-width: 768px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .hamburger {
                display: block;
                position: absolute;
                right: 16px;
                top: 50%;
                transform: translateY(-50%);
            }
            .header-inner {
                justify-content: center;
                height: 64px;
            }
            .site-logo {
                font-size: 1.3rem;
                padding: 0 12px;
            }
            .site-logo::after {
                width: 40%;
            }
        }

        /* hero */
        .hero {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 27, 61, 0.88) 0%, rgba(15, 27, 61, 0.70) 60%, rgba(10, 18, 40, 0.85) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            padding: 60px 24px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(201, 168, 76, 0.18);
            border: 1px solid rgba(201, 168, 76, 0.3);
            color: var(--accent);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }
        .hero-title span {
            color: var(--accent);
        }
        .hero-sub {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary);
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            letter-spacing: 0.5px;
            box-shadow: 0 4px 16px rgba(201, 168, 76, 0.25);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(201, 168, 76, 0.35);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.25);
            transition: var(--transition);
            letter-spacing: 0.3px;
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(201, 168, 76, 0.08);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .hero {
                min-height: 440px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-sub {
                font-size: 1rem;
            }
            .btn-primary,
            .btn-outline {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.6rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
        }

        /* section common */
        .section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-label {
            display: inline-block;
            background: var(--accent-light);
            color: var(--primary);
            padding: 4px 18px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .section-desc {
            max-width: 640px;
            margin: 0 auto;
            color: var(--text-muted);
            font-size: 1.05rem;
            line-height: 1.7;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 3px;
            margin: 16px auto 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-desc {
                font-size: 0.95rem;
            }
        }

        /* cards grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 22px;
            }
        }
        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--primary-light);
        }
        .card-body {
            padding: 22px 24px 26px;
        }
        .card-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 10px;
        }
        .card-title {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-text {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-top: 14px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .card-meta i {
            margin-right: 4px;
            color: var(--accent);
        }

        /* feature / icon cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            background: var(--accent-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent);
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--accent);
            color: var(--primary);
            transform: scale(1.05);
        }
        .feature-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .feature-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* stats */
        .stats-section {
            background: var(--primary);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 1;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }
        .stat-item {
            text-align: center;
            padding: 16px 8px;
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            letter-spacing: 0.5px;
        }

        /* process / timeline */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .process-grid::before {
            content: '';
            position: absolute;
            top: 44px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: var(--border-light);
            z-index: 0;
        }
        @media (max-width: 768px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px 16px;
            }
            .process-grid::before {
                display: none;
            }
        }
        @media (max-width: 480px) {
            .process-grid {
                grid-template-columns: 1fr;
            }
        }
        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .process-num {
            width: 44px;
            height: 44px;
            background: var(--accent);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            margin: 0 auto 16px;
            box-shadow: 0 0 0 4px var(--bg-light), 0 0 0 6px var(--accent);
        }
        .process-title {
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 4px;
            font-size: 1rem;
        }
        .process-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* faq */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 500;
            color: var(--primary);
            transition: var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question i {
            color: var(--accent);
            font-size: 1rem;
            transition: var(--transition);
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }

        /* cta */
        .cta-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 60px 24px;
        }
        .cta-title {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-desc {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.05rem;
            max-width: 540px;
            margin: 0 auto 28px;
        }
        .cta-btn {
            display: inline-block;
            background: var(--accent);
            color: var(--primary);
            padding: 14px 44px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            letter-spacing: 0.5px;
            box-shadow: 0 4px 20px rgba(201, 168, 76, 0.3);
        }
        .cta-btn:hover {
            background: var(--accent-hover);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(201, 168, 76, 0.4);
        }
        @media (max-width: 768px) {
            .cta-title {
                font-size: 1.5rem;
            }
            .cta-desc {
                font-size: 0.95rem;
            }
        }

        /* footer */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.65);
            padding: 48px 0 28px;
            border-top: 3px solid var(--accent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .footer-brand h3 {
            color: #fff;
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: 1px;
        }
        .footer-brand h3 span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            max-width: 280px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 480px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* category entry block */
        .cat-entry-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        @media (max-width: 640px) {
            .cat-entry-grid {
                grid-template-columns: 1fr;
            }
        }
        .cat-entry-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .cat-entry-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .cat-entry-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--primary-light);
        }
        .cat-entry-body {
            padding: 24px 26px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .cat-entry-body .card-tag {
            align-self: flex-start;
        }
        .cat-entry-body h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary);
            margin: 8px 0 6px;
        }
        .cat-entry-body p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }
        .cat-entry-body .btn-primary {
            align-self: flex-start;
            padding: 10px 28px;
            font-size: 0.9rem;
        }

        /* empty state */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-light);
        }
        .empty-state i {
            font-size: 2.4rem;
            color: var(--accent);
            margin-bottom: 12px;
            display: block;
        }
        .empty-state p {
            font-size: 1rem;
        }

        /* utility */
        .bg-accent-light {
            background: var(--accent-light);
        }
        .text-accent {
            color: var(--accent);
        }
        .border-accent {
            border-color: var(--accent);
        }

        /* scroll animations subtle */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: article */
:root {
            --primary: #1E3A5F;
            --primary-light: #2A5080;
            --primary-dark: #14273E;
            --accent: #C0392B;
            --accent-hover: #A93226;
            --bg-body: #F5F7FA;
            --bg-card: #FFFFFF;
            --text-body: #1E2A3A;
            --text-soft: #5A6A7A;
            --text-light: #8A9AA8;
            --border-light: #E2E8F0;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.10);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        /* 导航 */
        .site-header {
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 2px solid var(--border-light);
        }
        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }
        .nav-left { justify-content: flex-end; margin-right: 32px; }
        .nav-right { justify-content: flex-start; margin-left: 32px; }
        .nav-link {
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-soft);
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: all 0.2s ease;
            letter-spacing: 0.3px;
        }
        .nav-link:hover { color: var(--primary); background: rgba(30,58,95,0.06); }
        .nav-link.active { color: var(--primary); background: rgba(30,58,95,0.08); font-weight: 600; }
        .nav-cta-btn {
            padding: 8px 22px;
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background: var(--accent);
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: all 0.25s ease;
            letter-spacing: 0.5px;
        }
        .nav-cta-btn:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(192,57,43,0.3); }
        .site-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            letter-spacing: 1px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .site-logo span { color: var(--accent); font-weight: 700; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            cursor: pointer;
            padding: 8px;
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            background: var(--bg-card);
            padding: 16px 24px 24px;
            border-top: 1px solid var(--border-light);
            box-shadow: var(--shadow-md);
        }
        .mobile-menu .nav-link { padding: 12px 16px; font-size: 1rem; }
        .mobile-menu.open { display: flex; }
        /* 文章页面专属样式 */
        .article-hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            padding: 64px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .article-hero .container { position: relative; z-index: 1; }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a { color: rgba(255,255,255,0.8); text-decoration: none; transition: color 0.2s; }
        .article-breadcrumb a:hover { color: #fff; text-decoration: underline; }
        .article-breadcrumb .sep { color: rgba(255,255,255,0.4); }
        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            max-width: 860px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .article-meta-hero {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            color: rgba(255,255,255,0.75);
            font-size: 0.95rem;
        }
        .article-meta-hero span { display: flex; align-items: center; gap: 6px; }
        .article-meta-hero i { opacity: 0.7; }
        .article-meta-hero .category-tag {
            background: var(--accent);
            color: #fff;
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
        }
        /* 正文区域 */
        .article-main {
            padding: 48px 0 64px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 48px 56px;
            max-width: 860px;
            margin: 0 auto;
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-body);
        }
        .article-body .content p { margin-bottom: 1.4em; }
        .article-body .content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            margin: 1.6em 0 0.6em;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border-light);
        }
        .article-body .content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--primary-dark);
            margin: 1.4em 0 0.5em;
        }
        .article-body .content ul, .article-body .content ol {
            padding-left: 1.8em;
            margin-bottom: 1.4em;
        }
        .article-body .content li { margin-bottom: 0.4em; }
        .article-body .content img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-sm);
            margin: 1.6em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--accent);
            padding: 12px 20px;
            margin: 1.4em 0;
            background: rgba(192,57,43,0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-soft);
            font-style: italic;
        }
        .article-body .content a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
        .article-body .content a:hover { color: var(--accent-hover); }
        .article-footer-meta {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .article-footer-meta .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-footer-meta .tag {
            background: rgba(30,58,95,0.07);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 500;
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .article-share span { font-size: 0.9rem; color: var(--text-soft); }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--border-light);
            color: var(--text-soft);
            text-decoration: none;
            transition: all 0.2s ease;
        }
        .article-share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        /* 未找到 */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-box i { font-size: 4rem; color: var(--text-light); margin-bottom: 20px; }
        .not-found-box h2 { font-size: 1.8rem; color: var(--primary); margin-bottom: 12px; }
        .not-found-box p { color: var(--text-soft); margin-bottom: 24px; }
        .not-found-box .btn-back {
            display: inline-block;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            text-decoration: none;
            font-weight: 600;
            transition: all 0.25s ease;
        }
        .not-found-box .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
        /* 页脚 */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.8);
            padding: 56px 0 24px;
        }
        .site-footer .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h3 { font-size: 1.5rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
        .footer-brand h3 span { color: var(--accent); }
        .footer-brand p { font-size: 0.92rem; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 320px; }
        .footer-col h4 { font-size: 1rem; font-weight: 600; color: #fff; margin-bottom: 16px; letter-spacing: 0.5px; }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color 0.2s;
        }
        .footer-col a:hover { color: #fff; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
            gap: 12px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); text-decoration: none; margin: 0 4px; }
        .footer-bottom a:hover { color: #fff; }
        /* 响应式 */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .article-body { padding: 36px 32px; }
            .article-hero h1 { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .nav-left, .nav-right { display: none; }
            .hamburger { display: block; }
            .header-inner { justify-content: center; height: 64px; }
            .site-logo { font-size: 1.35rem; }
            .article-hero { padding: 40px 0 36px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-body { padding: 24px 20px; border-radius: var(--radius-sm); }
            .article-body .content { font-size: 1rem; }
            .article-footer-meta { flex-direction: column; align-items: flex-start; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .container { padding: 0 16px; }
            .article-meta-hero { gap: 12px; font-size: 0.85rem; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.35rem; }
            .article-body { padding: 16px 14px; }
            .article-body .content h2 { font-size: 1.25rem; }
            .article-body .content h3 { font-size: 1.05rem; }
        }

/* roulang page: category1 */
:root {
            --primary: #1e3a5f;
            --primary-light: #2a5298;
            --primary-dark: #0f2440;
            --accent: #c9362b;
            --accent-hover: #b02e24;
            --accent-light: #fbeae8;
            --bg-light: #f4f6f9;
            --bg-white: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #2d3748;
            --text-muted: #6b7280;
            --border-light: #e2e8f0;
            --border-mid: #cbd5e1;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .site-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 2px;
        }
        .site-logo span {
            color: var(--accent);
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            transition: background 0.2s, color 0.2s;
        }
        .nav-link:hover {
            background: var(--bg-light);
            color: var(--primary);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
        }
        .nav-cta-btn {
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            transition: background 0.2s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .nav-cta-btn:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            padding: 4px 8px;
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 12px 24px 20px;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
        }
        .mobile-menu .nav-link {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .mobile-menu .nav-link.active {
            background: transparent;
            color: var(--primary);
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .mobile-menu.open {
                display: flex;
            }
            .header-inner {
                height: 60px;
            }
        }
        @media (min-width: 769px) {
            .mobile-menu {
                display: none !important;
            }
        }

        .page-banner {
            position: relative;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            padding: 80px 0 64px;
            text-align: center;
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url(/assets/images/backpic/back-2.png) center center / cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 2px;
            margin-bottom: 12px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.20);
        }
        .page-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .page-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }
        .page-banner .breadcrumb a:hover {
            color: #fff;
        }
        .page-banner .breadcrumb span {
            color: rgba(255, 255, 255, 0.5);
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 56px 0 44px;
                min-height: 200px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.5rem;
            }
        }

        .section {
            padding: 64px 0;
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 36px;
            max-width: 600px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 44px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
        }

        .card-grid {
            display: grid;
            gap: 24px;
        }
        .grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        .grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .grid-3,
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
        }

        .card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: transform 0.2s, box-shadow 0.2s;
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .card-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .card .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--accent-light);
            color: var(--accent);
            margin-top: 10px;
        }

        .card-cover {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: transform 0.2s, box-shadow 0.2s;
            border: 1px solid var(--border-light);
        }
        .card-cover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .card-cover .cover-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--border-light);
        }
        .card-cover .card-body {
            padding: 20px;
        }
        .card-cover .card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .card-cover .card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .card-cover .card-body .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 12px;
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
        }

        .process-steps {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .process-step {
            flex: 1 1 180px;
            max-width: 220px;
            text-align: center;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 16px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            position: relative;
            transition: transform 0.2s;
        }
        .process-step:hover {
            transform: translateY(-3px);
        }
        .process-step .step-num {
            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: 1.1rem;
            margin: 0 auto 12px;
        }
        .process-step h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .process-step {
                flex: 1 1 140px;
                max-width: 180px;
                padding: 20px 12px 18px;
            }
        }
        @media (max-width: 520px) {
            .process-step {
                flex: 1 1 100%;
                max-width: 100%;
            }
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow 0.2s;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1rem;
            background: var(--bg-white);
            transition: background 0.2s;
        }
        .faq-question:hover {
            background: var(--bg-light);
        }
        .faq-question i {
            transition: transform 0.3s;
            color: var(--text-muted);
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }

        .cta-block {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 64px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url(/assets/images/backpic/back-3.png) center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-block .container {
            position: relative;
            z-index: 2;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-block .cta-btn {
            display: inline-block;
            padding: 14px 44px;
            border-radius: var(--radius-sm);
            font-size: 1.05rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            transition: background 0.2s, transform 0.15s;
            box-shadow: 0 4px 20px rgba(201, 54, 43, 0.35);
        }
        .cta-block .cta-btn:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .cta-block {
                padding: 44px 0;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .cta-block p {
                font-size: 0.95rem;
            }
            .cta-block .cta-btn {
                padding: 12px 32px;
                font-size: 0.95rem;
            }
        }

        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 52px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-brand h3 span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            padding: 4px 0;
            transition: color 0.2s;
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-col a i {
            width: 20px;
            margin-right: 6px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.65);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        .stat-row {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
        }
        .stat-item {
            flex: 1 1 180px;
            max-width: 220px;
            text-align: center;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 16px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .stat-item .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-item .label {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-top: 6px;
        }
        @media (max-width: 520px) {
            .stat-item {
                flex: 1 1 140px;
                max-width: 160px;
                padding: 20px 12px;
            }
            .stat-item .num {
                font-size: 1.6rem;
            }
        }

        .cover-card-grid {
            display: grid;
            gap: 24px;
            grid-template-columns: repeat(3, 1fr);
        }
        @media (max-width: 1024px) {
            .cover-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .cover-card-grid {
                grid-template-columns: 1fr;
            }
        }

        .btn-outline {
            display: inline-block;
            padding: 10px 28px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            background: transparent;
            transition: background 0.2s, color 0.2s;
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        .text-accent {
            color: var(--accent);
        }
        .bg-accent-light {
            background: var(--accent-light);
        }
        .text-primary {
            color: var(--primary);
        }
        .bg-primary {
            background: var(--primary);
        }
        .bg-light {
            background: var(--bg-light);
        }
        .bg-white {
            background: var(--bg-white);
        }
        .rounded-card {
            border-radius: var(--radius-md);
        }
        .shadow-card {
            box-shadow: var(--shadow-sm);
        }

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

        @media (max-width: 768px) {
            .section-title br {
                display: none;
            }
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 12px;
        }
        .tag-list .tag-item {
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--bg-light);
            color: var(--text-muted);
            border: 1px solid var(--border-light);
            transition: background 0.2s, color 0.2s;
        }
        .tag-list .tag-item:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .divider {
            width: 60px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
            margin-top: 8px;
            margin-bottom: 20px;
        }
        .divider-center {
            margin-left: auto;
            margin-right: auto;
        }

        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: var(--shadow-md);
            z-index: 99;
            transition: opacity 0.3s, transform 0.2s;
            opacity: 0;
            pointer-events: none;
            border: none;
        }
        .back-to-top.show {
            opacity: 1;
            pointer-events: auto;
        }
        .back-to-top:hover {
            transform: translateY(-3px);
            background: var(--primary-light);
        }
        @media (max-width: 768px) {
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }