/* roulang page: index */
:root {
            --primary: #1a4fbf;
            --primary-dark: #0f3790;
            --primary-light: #e8f0ff;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --accent-glow: #fef3c7;
            --bg: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0b1a3b;
            --bg-dark-soft: #111f3d;
            --text: #1e293b;
            --text-soft: #64748b;
            --text-light: #94a3b8;
            --text-on-dark: #e2e8f0;
            --text-on-primary: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow: 0 4px 16px rgba(0,0,0,0.07), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.05);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.13), 0 6px 20px rgba(0,0,0,0.06);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --section-gap: 80px;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        *, *::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-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
        }

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

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

        button, input {
            font-family: inherit;
            font-size: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul, ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 32px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.01em;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary) 0%, #3b82f6 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.15rem;
            flex-shrink: 0;
        }

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

        .nav-main a {
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-soft);
            transition: all var(--transition);
            white-space: nowrap;
        }

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

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            background: linear-gradient(135deg, var(--accent) 0%, #fbbf24 100%);
            color: #1e293b;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-nav-cta:hover {
            box-shadow: 0 6px 22px rgba(245, 158, 11, 0.50);
            transform: translateY(-1px);
            color: #1e293b;
        }

        .btn-nav-cta:active {
            transform: translateY(0);
            box-shadow: 0 3px 10px rgba(245, 158, 11, 0.30);
        }

        .mobile-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            color: var(--text);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .mobile-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            z-index: 999;
            padding: 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
        }

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

        .mobile-menu a {
            display: block;
            padding: 14px 20px;
            border-radius: var(--radius);
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--primary-light);
            color: var(--primary);
        }

        .mobile-menu .btn-nav-cta {
            display: flex;
            justify-content: center;
            margin-top: 8px;
            border-radius: var(--radius);
            padding: 15px;
            font-size: 1rem;
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            padding: 100px 0 110px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            color: #ffffff;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11,26,59,0.88) 0%, rgba(15,43,120,0.78) 50%, rgba(11,26,59,0.85) 100%);
            z-index: 0;
        }

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

        .hero-content {
            max-width: 680px;
        }

        .hero-badge {
            display: inline-block;
            padding: 8px 18px;
            border-radius: var(--radius-full);
            background: rgba(255,255,255,0.12);
            border: 1px solid rgba(255,255,255,0.22);
            font-size: 0.875rem;
            font-weight: 500;
            color: #fde68a;
            margin-bottom: 24px;
            letter-spacing: 0.02em;
        }

        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.18;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }

        .hero h1 span {
            color: var(--accent);
        }

        .hero-desc {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.78);
            line-height: 1.75;
            margin-bottom: 36px;
            max-width: 540px;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 34px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 1rem;
            background: linear-gradient(135deg, var(--accent) 0%, #fbbf24 100%);
            color: #1e293b;
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.40);
            transition: all var(--transition);
            letter-spacing: 0.01em;
        }

        .btn-primary:hover {
            box-shadow: 0 12px 36px rgba(245, 158, 11, 0.55);
            transform: translateY(-2px);
        }

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

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 34px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 1rem;
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255,255,255,0.40);
            transition: all var(--transition);
        }

        .btn-outline-light:hover {
            background: rgba(255,255,255,0.10);
            border-color: rgba(255,255,255,0.65);
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-label {
            display: inline-block;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: -0.015em;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-soft);
            max-width: 600px;
            margin: 0 auto;
        }

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

        .bg-dark-section {
            background: var(--bg-dark);
            color: var(--text-on-dark);
        }

        .bg-dark-section .section-title {
            color: #ffffff;
        }

        .bg-dark-section .section-subtitle {
            color: var(--text-light);
        }

        .bg-dark-section .section-label {
            background: rgba(255,255,255,0.10);
            color: #fde68a;
        }

        /* ========== FEATURE CARDS ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 36px 28px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .feature-icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 20px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.55rem;
            background: var(--primary-light);
            color: var(--primary);
        }

        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-soft);
            line-height: 1.6;
        }

        /* ========== CATEGORY ENTRY CARD ========== */
        .category-entry-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

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

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

        .cat-entry-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .cat-entry-body {
            padding: 28px 28px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .cat-entry-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: var(--radius-full);
            background: var(--accent-glow);
            color: var(--accent-dark);
            font-weight: 600;
            font-size: 0.8rem;
            margin-bottom: 12px;
            align-self: flex-start;
        }

        .cat-entry-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

        .cat-entry-body p {
            font-size: 0.92rem;
            color: var(--text-soft);
            line-height: 1.6;
            margin-bottom: 20px;
            flex: 1;
        }

        .cat-entry-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--primary);
            transition: gap var(--transition);
        }

        .cat-entry-link:hover {
            gap: 10px;
        }

        /* ========== NEWS LIST ========== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 860px;
            margin: 0 auto;
        }

        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 22px 26px;
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

        .news-item:hover {
            box-shadow: var(--shadow);
            border-color: transparent;
            transform: translateX(4px);
        }

        .news-thumb {
            width: 100px;
            height: 72px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg);
        }

        .news-info {
            flex: 1;
            min-width: 0;
        }

        .news-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-info h4 a:hover {
            color: var(--primary);
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-light);
            flex-wrap: wrap;
        }

        .news-meta .tag-dot {
            display: inline-block;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 500;
            font-size: 0.78rem;
        }

        .news-empty {
            text-align: center;
            padding: 48px 20px;
            color: var(--text-soft);
            font-size: 1rem;
        }

        /* ========== STATS ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .stat-item {
            padding: 32px 16px;
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.02em;
            margin-bottom: 6px;
        }

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

        .stat-label {
            font-size: 0.95rem;
            color: var(--text-light);
            font-weight: 500;
        }

        /* ========== STEPS / PROCESS ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 30px 34px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            position: relative;
            transition: all var(--transition);
            text-align: center;
        }

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

        .step-number {
            width: 52px;
            height: 52px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, #3b82f6 100%);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 6px 18px rgba(26,79,191,0.30);
        }

        .step-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

        .step-card p {
            font-size: 0.9rem;
            color: var(--text-soft);
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 26px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            gap: 16px;
            transition: background var(--transition);
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: all var(--transition);
            color: var(--text-soft);
            border: 1px solid var(--border);
        }

        .faq-item.open .faq-question .faq-icon {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 26px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 26px 22px;
        }

        .faq-answer p {
            font-size: 0.93rem;
            color: var(--text-soft);
            line-height: 1.7;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            position: relative;
            padding: 80px 0;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            text-align: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11,26,59,0.9) 0%, rgba(26,79,191,0.75) 100%);
            z-index: 0;
        }

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

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.75);
            margin-bottom: 32px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #070e1f;
            color: var(--text-on-dark);
            padding: 60px 0 32px;
        }

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

        .footer-brand .logo-link {
            color: #ffffff;
            font-size: 1.2rem;
            margin-bottom: 12px;
            display: inline-flex;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-top: 8px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

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

        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--text-light);
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: #ffffff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.10);
            padding-top: 24px;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-light);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            :root {
                --section-gap: 60px;
            }
            .hero h1 {
                font-size: 2.3rem;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-entry-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 48px;
                --nav-height: 64px;
            }
            .nav-main {
                display: none;
            }
            .nav-actions .btn-nav-cta {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .hero {
                padding: 70px 0 80px;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-buttons {
                flex-direction: column;
                gap: 10px;
            }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-outline-light {
                justify-content: center;
                width: 100%;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .category-entry-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cat-entry-img {
                height: 180px;
            }
            .news-item {
                flex-direction: column;
                gap: 14px;
                padding: 18px;
            }
            .news-thumb {
                width: 100%;
                height: 140px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .btn-primary, .btn-outline-light {
                padding: 14px 26px;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-gap: 38px;
            }
            .container {
                padding: 0 16px;
            }
            .hero {
                padding: 50px 0 60px;
            }
            .hero h1 {
                font-size: 1.55rem;
            }
            .hero-desc {
                font-size: 0.9rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .feature-card {
                padding: 26px 20px 24px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .stat-item {
                padding: 20px 10px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .section-subtitle {
                font-size: 0.9rem;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 18px;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 18px;
            }
            .news-item {
                padding: 14px;
            }
            .news-thumb {
                height: 110px;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #5b3cc4;
            --color-primary-dark: #43308a;
            --color-primary-light: #7c5fe0;
            --color-accent: #ff6b3d;
            --color-accent-hover: #e8552b;
            --color-gold: #f5a623;
            --color-bg: #f7f6fb;
            --color-bg-alt: #edeaf5;
            --color-surface: #ffffff;
            --color-text: #1e1b2e;
            --color-text-secondary: #5c5870;
            --color-text-muted: #8b879e;
            --color-border: #e2deed;
            --color-border-light: #f0edf6;
            --color-success: #22c55e;
            --color-warning: #f59e0b;
            --color-error: #ef4444;
            --color-nav-bg: rgba(255,255,255,0.97);
            --color-footer-bg: #1a1730;
            --color-footer-text: #c5c1d6;
            --color-footer-heading: #ffffff;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-xs: 0 1px 2px rgba(30,27,46,0.05);
            --shadow-sm: 0 2px 8px rgba(30,27,46,0.07);
            --shadow-md: 0 6px 20px rgba(30,27,46,0.09);
            --shadow-lg: 0 12px 36px rgba(30,27,46,0.12);
            --shadow-xl: 0 20px 50px rgba(30,27,46,0.16);
            --shadow-card: 0 4px 16px rgba(30,27,46,0.07);
            --shadow-card-hover: 0 10px 30px rgba(30,27,46,0.13);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', 'Courier New', monospace;
            --container-max: 1140px;
            --container-padding: 24px;
            --nav-height: 68px;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        ul, ol { list-style: none; }
        input, textarea { font-family: inherit; font-size: inherit; }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-padding);
            padding-right: var(--container-padding);
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-nav-bg);
            border-bottom: 1px solid var(--color-border-light);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow-xs);
            height: var(--nav-height);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.22rem;
            color: var(--color-primary);
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }
        .logo-link:hover { opacity: 0.82; }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: var(--radius-md);
            color: #fff;
            font-size: 1.1rem;
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-main a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-main a:hover { color: var(--color-primary); background: var(--color-bg-alt); }
        .nav-main a.active { color: #fff; background: var(--color-primary); font-weight: 600; }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 20px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.93rem;
            background: var(--color-accent);
            color: #fff;
            transition: all var(--transition-base);
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(255,107,61,0.3);
        }
        .nav-cta-btn:hover { background: var(--color-accent-hover); box-shadow: 0 6px 20px rgba(255,107,61,0.4); transform: translateY(-1px); }
        .nav-cta-btn i { font-size: 0.85rem; }

        .btn-mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-md);
            color: var(--color-text);
            font-size: 1.35rem;
            transition: background var(--transition-fast);
        }
        .btn-mobile-toggle:hover { background: var(--color-bg-alt); }
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.45);
            z-index: 998;
        }
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: var(--nav-height);
            right: 0;
            width: 280px;
            max-width: 85vw;
            bottom: 0;
            background: var(--color-surface);
            z-index: 999;
            padding: 20px;
            flex-direction: column;
            gap: 6px;
            box-shadow: var(--shadow-xl);
            overflow-y: auto;
        }
        .mobile-nav-panel a {
            display: block;
            padding: 13px 16px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 0.98rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
        }
        .mobile-nav-panel a:hover { background: var(--color-bg-alt); color: var(--color-primary); }
        .mobile-nav-panel a.active { background: var(--color-primary); color: #fff; font-weight: 600; }
        .mobile-nav-panel .nav-cta-btn {
            margin-top: 8px;
            justify-content: center;
            text-align: center;
            border-radius: var(--radius-md);
        }

        @media (max-width: 768px) {
            .nav-main { display: none; }
            .header-inner .nav-cta-btn { display: none; }
            .btn-mobile-toggle { display: flex; }
            .mobile-nav-overlay.active,
            .mobile-nav-panel.active { display: flex; }
            .mobile-nav-overlay.active { display: block; }
        }

        /* ========== ARTICLE BANNER ========== */
        .article-banner {
            position: relative;
            padding: 48px 0;
            background: linear-gradient(135deg, #1a1730 0%, #2d2458 40%, #3b2d6e 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: #fff;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26,23,48,0.72) 0%, rgba(26,23,48,0.85) 100%);
            z-index: 1;
            pointer-events: none;
        }
        .article-banner .container { position: relative; z-index: 2; }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.75);
            margin-bottom: 18px;
        }
        .breadcrumb a {
            color: rgba(255,255,255,0.85);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover { color: #fff; text-decoration: underline; }
        .breadcrumb .sep { color: rgba(255,255,255,0.5); margin: 0 2px; }
        .breadcrumb .current { color: rgba(255,255,255,0.6); }
        .article-banner-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
            max-width: 800px;
        }
        .article-banner-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
        }
        .article-banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .article-banner-meta .meta-category {
            display: inline-block;
            padding: 3px 12px;
            background: rgba(255,255,255,0.15);
            border-radius: var(--radius-full);
            color: #fff;
            font-weight: 500;
            font-size: 0.83rem;
            backdrop-filter: blur(4px);
        }

        /* ========== MAIN CONTENT AREA ========== */
        .article-main {
            flex: 1;
            padding: 40px 0 60px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 36px;
            align-items: flex-start;
        }
        .article-content-wrapper {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }
        .article-featured-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
        }
        .article-body {
            padding: 32px 36px 40px;
        }
        @media (max-width: 768px) {
            .article-body { padding: 22px 18px 28px; }
        }
        .article-content {
            font-size: 1.04rem;
            line-height: 1.85;
            color: var(--color-text);
        }
        .article-content h2 {
            font-size: 1.45rem;
            font-weight: 700;
            margin: 32px 0 14px;
            color: var(--color-primary-dark);
            padding-bottom: 8px;
            border-bottom: 2px solid var(--color-border-light);
        }
        .article-content h3 {
            font-size: 1.22rem;
            font-weight: 600;
            margin: 24px 0 10px;
            color: var(--color-text);
        }
        .article-content h4 {
            font-size: 1.08rem;
            font-weight: 600;
            margin: 20px 0 8px;
            color: var(--color-text-secondary);
        }
        .article-content p { margin-bottom: 16px; }
        .article-content ul, .article-content ol {
            margin: 12px 0 18px 20px;
        }
        .article-content ul { list-style: disc; }
        .article-content ol { list-style: decimal; }
        .article-content li { margin-bottom: 6px; }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            max-width: 100%;
            height: auto;
            box-shadow: var(--shadow-sm);
        }
        .article-content blockquote {
            margin: 20px 0;
            padding: 16px 20px;
            background: var(--color-bg-alt);
            border-left: 4px solid var(--color-primary);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--color-text-secondary);
            font-style: italic;
        }
        .article-content a {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover { color: var(--color-primary-dark); }
        .article-content code {
            background: var(--color-bg-alt);
            padding: 2px 7px;
            border-radius: var(--radius-sm);
            font-family: var(--font-mono);
            font-size: 0.9em;
            color: var(--color-primary-dark);
        }
        .article-content pre {
            background: #1e1b2e;
            color: #e2deed;
            padding: 20px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 18px 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .article-content pre code {
            background: none;
            padding: 0;
            color: inherit;
            font-size: inherit;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 18px 0;
        }
        .article-content th, .article-content td {
            padding: 10px 14px;
            border: 1px solid var(--color-border);
            text-align: left;
        }
        .article-content th {
            background: var(--color-bg-alt);
            font-weight: 600;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid var(--color-border-light);
        }
        .article-tags .tag-label {
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            margin-right: 4px;
        }
        .article-tags .tag {
            display: inline-block;
            padding: 5px 13px;
            background: var(--color-bg-alt);
            border-radius: var(--radius-full);
            font-size: 0.83rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
        }
        .article-tags .tag:hover { background: var(--color-primary); color: #fff; }

        /* ========== SIDEBAR ========== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: calc(var(--nav-height) + 20px);
        }
        .sidebar-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 22px 20px;
        }
        .sidebar-card h4 {
            font-size: 0.98rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--color-text);
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-border-light);
        }
        .sidebar-card ul li { margin-bottom: 8px; }
        .sidebar-card ul li a {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
            display: inline-block;
            padding: 3px 0;
        }
        .sidebar-card ul li a:hover { color: var(--color-primary); }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            text-align: center;
        }
        .sidebar-cta h4 { color: #fff; border-bottom-color: rgba(255,255,255,0.25); }
        .sidebar-cta p { font-size: 0.9rem; margin-bottom: 14px; opacity: 0.9; }
        .sidebar-cta .btn-sidebar {
            display: inline-block;
            padding: 10px 22px;
            background: #fff;
            color: var(--color-primary);
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-cta .btn-sidebar:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

        @media (max-width: 900px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { position: static; flex-direction: row; flex-wrap: wrap; gap: 16px; }
            .sidebar-card { flex: 1 1 220px; min-width: 200px; }
            .article-banner-title { font-size: 1.5rem; }
        }
        @media (max-width: 520px) {
            .article-sidebar { flex-direction: column; }
            .sidebar-card { flex: 1 1 auto; }
            .article-banner-title { font-size: 1.3rem; }
            .article-banner { padding: 32px 0; }
            .breadcrumb { font-size: 0.8rem; }
        }

        /* ========== NOT FOUND STATE ========== */
        .not-found-section {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-section .icon-large {
            font-size: 4rem;
            color: var(--color-text-muted);
            margin-bottom: 18px;
        }
        .not-found-section h2 {
            font-size: 1.5rem;
            margin-bottom: 10px;
            color: var(--color-text);
        }
        .not-found-section p {
            color: var(--color-text-secondary);
            margin-bottom: 20px;
        }
        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 11px 24px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }
        .btn-back-home:hover { background: var(--color-primary-dark); box-shadow: var(--shadow-md); transform: translateY(-1px); }

        /* ========== RELATED POSTS ========== */
        .section-related {
            padding: 50px 0 30px;
        }
        .section-related .section-heading {
            text-align: center;
            margin-bottom: 32px;
        }
        .section-related .section-heading h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
        }
        .section-related .section-heading p {
            color: var(--color-text-muted);
            font-size: 0.92rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .related-card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .related-card-body {
            padding: 16px 18px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card-body h3 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 6px;
            line-height: 1.4;
            color: var(--color-text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card-body h3 a { color: inherit; }
        .related-card-body h3 a:hover { color: var(--color-primary); }
        .related-card-body .related-meta {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: auto;
            padding-top: 10px;
        }
        @media (max-width: 900px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .related-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
        }

        /* ========== CTA SECTION ========== */
        .section-cta {
            padding: 50px 0;
            text-align: center;
        }
        .cta-box {
            background: linear-gradient(135deg, #2d2458 0%, #3b2d6e 50%, #4a3890 100%);
            border-radius: var(--radius-xl);
            padding: 48px 36px;
            color: #fff;
            box-shadow: var(--shadow-lg);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
        }
        .cta-box h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .cta-box p {
            font-size: 1rem;
            opacity: 0.85;
            margin-bottom: 22px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-base);
            box-shadow: 0 6px 22px rgba(255,107,61,0.35);
        }
        .btn-cta-lg:hover { background: #fff; color: var(--color-primary); box-shadow: 0 10px 30px rgba(255,255,255,0.25); transform: translateY(-2px); }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 48px 0 0;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .footer-brand .logo-link {
            color: #fff;
            font-size: 1.15rem;
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand .logo-icon {
            background: linear-gradient(135deg, var(--color-accent), var(--color-gold));
        }
        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.6;
            color: var(--color-footer-text);
            margin-top: 8px;
        }
        .footer-col h4 {
            color: var(--color-footer-heading);
            font-size: 0.93rem;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--color-footer-text);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover { color: #fff; }
        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.83rem;
            color: rgba(255,255,255,0.45);
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; text-align: center; }
            .footer-brand { text-align: center; }
        }

/* roulang page: category1 */
/* ========================================
           设计变量
           ======================================== */
        :root {
            --color-primary: #4F46E5;
            --color-primary-light: #6366F1;
            --color-primary-dark: #3730A3;
            --color-primary-bg: #EEF2FF;
            --color-accent: #F59E0B;
            --color-accent-light: #FBBF24;
            --color-accent-dark: #D97706;
            --color-accent-bg: #FFFBEB;
            --color-bg: #F8FAFC;
            --color-bg-alt: #F1F5F9;
            --color-surface: #FFFFFF;
            --color-text: #1E293B;
            --color-text-secondary: #475569;
            --color-text-muted: #64748B;
            --color-text-light: #94A3B8;
            --color-border: #E2E8F0;
            --color-border-light: #F1F5F9;
            --color-success: #10B981;
            --color-success-bg: #ECFDF5;
            --color-danger: #EF4444;
            --color-danger-bg: #FEF2F2;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.10), 0 4px 8px rgba(0,0,0,0.05);
            --shadow-xl: 0 20px 48px rgba(0,0,0,0.12), 0 8px 16px rgba(0,0,0,0.06);
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --container-padding: 24px;
            --nav-height: 72px;
        }

        /* ========================================
           基础 Reset
           ======================================== */
        *, *::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-family);
            font-size: 16px;
            line-height: 1.6;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        ul, ol {
            list-style: none;
        }

        input {
            font-family: inherit;
            border: none;
            outline: none;
        }

        /* ========================================
           容器
           ======================================== */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-padding);
        }

        @media (min-width: 1400px) {
            :root {
                --container-max: 1280px;
            }
        }

        /* ========================================
           导航栏
           ======================================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-xs);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.01em;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }

        .logo-link:hover {
            opacity: 0.85;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            flex-shrink: 0;
        }

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

        .nav-main a {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            border-radius: var(--radius);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-main a:hover {
            color: var(--color-primary);
            background: var(--color-primary-bg);
        }

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

        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--color-primary);
            border-radius: var(--radius-full);
        }

        .nav-cta-btn {
            display: inline-flex !important;
            align-items: center;
            gap: 8px;
            padding: 10px 22px !important;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)) !important;
            color: #fff !important;
            border-radius: var(--radius) !important;
            font-weight: 600 !important;
            font-size: 0.95rem !important;
            box-shadow: 0 2px 8px rgba(79,70,229,0.3);
            transition: all var(--transition) !important;
        }

        .nav-cta-btn:hover {
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary)) !important;
            box-shadow: 0 4px 16px rgba(79,70,229,0.4) !important;
            transform: translateY(-1px);
        }

        .nav-cta-btn i {
            font-size: 0.85rem;
        }

        /* 移动端菜单按钮 */
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            color: var(--color-text);
            font-size: 1.3rem;
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: var(--color-bg-alt);
        }

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

            .nav-main {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                border-bottom: 2px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition);
                z-index: 999;
            }

            .nav-main.mobile-open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-main a {
                width: 100%;
                padding: 14px 18px;
                justify-content: center;
                font-size: 1rem;
            }

            .nav-cta-btn {
                margin-top: 8px;
            }
        }

        /* ========================================
           分类 Banner
           ======================================== */
        .category-banner {
            position: relative;
            background: linear-gradient(135deg, #1E293B 0%, #0F172A 40%, #1a1a2e 70%, #16213e 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 80px 0;
            text-align: center;
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(79,70,229,0.25) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .category-banner .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.12);
            color: rgba(255,255,255,0.9);
            padding: 8px 20px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255,255,255,0.15);
        }

        .category-banner .banner-badge i {
            color: var(--color-accent);
            font-size: 0.85rem;
        }

        .category-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .category-banner h1 span {
            background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .category-banner .banner-desc {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.75);
            max-width: 650px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .category-banner .banner-search {
            display: flex;
            max-width: 520px;
            margin: 0 auto;
            background: rgba(255,255,255,0.95);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .category-banner .banner-search input {
            flex: 1;
            padding: 16px 22px;
            font-size: 1rem;
            color: var(--color-text);
            background: transparent;
            border: none;
            outline: none;
        }

        .category-banner .banner-search input::placeholder {
            color: var(--color-text-muted);
        }

        .category-banner .banner-search button {
            padding: 16px 28px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            white-space: nowrap;
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .category-banner .banner-search button:hover {
            background: linear-gradient(135deg, var(--color-primary-dark), #312E81);
        }

        .category-banner .banner-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 32px;
            flex-wrap: wrap;
        }

        .category-banner .stat-item {
            text-align: center;
            color: #fff;
        }

        .category-banner .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-accent-light);
            line-height: 1;
        }

        .category-banner .stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.65);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .category-banner {
                padding: 50px 0;
            }
            .category-banner h1 {
                font-size: 2rem;
            }
            .category-banner .banner-desc {
                font-size: 1rem;
                padding: 0 10px;
            }
            .category-banner .banner-search {
                flex-direction: column;
                max-width: 90%;
                border-radius: var(--radius);
            }
            .category-banner .banner-search input {
                padding: 14px 18px;
            }
            .category-banner .banner-search button {
                justify-content: center;
                padding: 14px;
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .category-banner .banner-stats {
                gap: 24px;
            }
            .category-banner .stat-number {
                font-size: 1.5rem;
            }
        }

        /* ========================================
           子分类标签栏
           ======================================== */
        .subcat-section {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: var(--nav-height);
            z-index: 100;
            padding: 14px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .subcat-section::-webkit-scrollbar {
            height: 0;
        }

        .subcat-list {
            display: flex;
            gap: 8px;
            flex-wrap: nowrap;
            white-space: nowrap;
            min-width: max-content;
        }

        .subcat-tag {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .subcat-tag.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(79,70,229,0.3);
        }

        @media (max-width: 768px) {
            .subcat-section {
                padding: 10px 0;
            }
            .subcat-tag {
                padding: 7px 15px;
                font-size: 0.85rem;
            }
        }

        /* ========================================
           攻略卡片网格
           ======================================== */
        .articles-section {
            padding: 56px 0;
            background: var(--color-bg);
        }

        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 36px;
            flex-wrap: wrap;
            gap: 16px;
        }

        .section-header h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.01em;
        }

        .section-header .sort-options {
            display: flex;
            gap: 6px;
        }

        .sort-btn {
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 500;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            color: var(--color-text-muted);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

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

        .sort-btn.active {
            background: var(--color-primary-bg);
            color: var(--color-primary);
            border-color: var(--color-primary);
            font-weight: 600;
        }

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

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

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

        .article-card .card-image {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-bg-alt);
        }

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

        .article-card:hover .card-image img {
            transform: scale(1.06);
        }

        .article-card .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 5px 14px;
            background: rgba(0,0,0,0.7);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 500;
            border-radius: var(--radius-full);
            backdrop-filter: blur(4px);
            z-index: 2;
        }

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

        .article-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.45;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .article-card:hover .card-title {
            color: var(--color-primary);
        }

        .article-card .card-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
            margin-bottom: 16px;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--color-text-light);
            padding-top: 14px;
            border-top: 1px solid var(--color-border-light);
        }

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

        @media (max-width: 1024px) {
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 640px) {
            .articles-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .articles-section {
                padding: 36px 0;
            }
        }

        /* ========================================
           热门排行板块
           ======================================== */
        .hot-ranking-section {
            padding: 56px 0;
            background: var(--color-surface);
        }

        .hot-ranking-section .section-header h2 {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hot-ranking-section .section-header h2 i {
            color: var(--color-accent);
            font-size: 1.4rem;
        }

        .ranking-list {
            display: grid;
            gap: 12px;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 18px 22px;
            background: var(--color-bg);
            border-radius: var(--radius);
            transition: all var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
        }

        .ranking-item:hover {
            background: var(--color-surface);
            border-color: var(--color-border);
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }

        .ranking-item .rank-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            border-radius: var(--radius-sm);
            background: var(--color-bg-alt);
            color: var(--color-text-muted);
        }

        .ranking-item:nth-child(1) .rank-number {
            background: linear-gradient(135deg, #F59E0B, #EF4444);
            color: #fff;
            box-shadow: 0 4px 12px rgba(245,158,11,0.35);
        }

        .ranking-item:nth-child(2) .rank-number {
            background: linear-gradient(135deg, #94A3B8, #64748B);
            color: #fff;
            box-shadow: 0 4px 12px rgba(100,116,139,0.3);
        }

        .ranking-item:nth-child(3) .rank-number {
            background: linear-gradient(135deg, #D97706, #B45309);
            color: #fff;
            box-shadow: 0 4px 12px rgba(217,119,6,0.3);
        }

        .ranking-item .rank-info {
            flex: 1;
            min-width: 0;
        }

        .ranking-item .rank-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color var(--transition-fast);
        }

        .ranking-item:hover .rank-title {
            color: var(--color-primary);
        }

        .ranking-item .rank-tag {
            display: inline-block;
            font-size: 0.78rem;
            color: var(--color-text-muted);
            margin-top: 2px;
        }

        .ranking-item .rank-views {
            flex-shrink: 0;
            font-size: 0.85rem;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .ranking-item .rank-views i {
            font-size: 0.8rem;
        }

        @media (max-width: 640px) {
            .ranking-item {
                padding: 14px 16px;
                gap: 12px;
            }
            .ranking-item .rank-number {
                width: 36px;
                height: 36px;
                font-size: 1.1rem;
            }
            .ranking-item .rank-title {
                font-size: 0.95rem;
            }
        }

        /* ========================================
           技巧速览板块
           ======================================== */
        .tips-section {
            padding: 56px 0;
            background: var(--color-bg);
        }

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

        .tip-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }

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

        .tip-card .tip-icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 1.5rem;
            background: var(--color-primary-bg);
            color: var(--color-primary);
        }

        .tip-card:nth-child(2) .tip-icon {
            background: var(--color-accent-bg);
            color: var(--color-accent-dark);
        }

        .tip-card:nth-child(3) .tip-icon {
            background: var(--color-success-bg);
            color: var(--color-success);
        }

        .tip-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .tip-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .tips-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        /* ========================================
           FAQ板块
           ======================================== */
        .faq-section {
            padding: 56px 0;
            background: var(--color-surface);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: grid;
            gap: 12px;
        }

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

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            background: transparent;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            transition: all var(--transition-fast);
            gap: 16px;
            text-align: left;
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--color-surface);
            color: var(--color-text-muted);
            font-size: 0.85rem;
            transition: all var(--transition);
            border: 1px solid var(--color-border);
        }

        .faq-item.active .faq-question .faq-icon {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            display: none;
        }

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

        @media (max-width: 640px) {
            .faq-question {
                padding: 15px 16px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 16px 15px;
            }
        }

        /* ========================================
           CTA板块
           ======================================== */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(79,70,229,0.3) 0%, transparent 60%);
            pointer-events: none;
        }

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

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
            color: #1E293B;
            font-weight: 700;
            font-size: 1rem;
            border-radius: var(--radius);
            box-shadow: 0 4px 16px rgba(245,158,11,0.4);
            transition: all var(--transition);
        }

        .cta-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,158,11,0.5);
        }

        .cta-btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: rgba(255,255,255,0.1);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border-radius: var(--radius);
            border: 1px solid rgba(255,255,255,0.25);
            backdrop-filter: blur(4px);
            transition: all var(--transition);
        }

        .cta-btn-secondary:hover {
            background: rgba(255,255,255,0.2);
            border-color: rgba(255,255,255,0.4);
            transform: translateY(-2px);
        }

        @media (max-width: 640px) {
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
        }

        /* ========================================
           分页
           ======================================== */
        .pagination-section {
            padding: 20px 0 48px;
            background: var(--color-bg);
            display: flex;
            justify-content: center;
        }

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

        .pagination .page-btn {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

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

        .pagination .page-btn.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 700;
            box-shadow: 0 2px 8px rgba(79,70,229,0.3);
        }

        .pagination .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
            cursor: not-allowed;
        }

        /* ========================================
           页脚
           ======================================== */
        .site-footer {
            background: #0F172A;
            color: rgba(255,255,255,0.85);
            padding: 56px 0 0;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .footer-brand .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
        }

        .footer-brand .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1rem;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.55);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        .footer-col ul {
            display: grid;
            gap: 10px;
        }

        .footer-col ul li a {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ========================================
           面包屑导航
           ======================================== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            padding: 16px 0;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: var(--color-text-light);
            font-size: 0.75rem;
        }

        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
        }

        /* ========================================
           辅助样式
           ======================================== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            white-space: nowrap;
            border: 0;
        }

        /* 平滑过渡的通用链接 */
        .hover-underline {
            position: relative;
        }

        .hover-underline::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: width var(--transition);
        }

        .hover-underline:hover::after {
            width: 100%;
        }