/* roulang page: index */
:root {
            --primary: #1a2744;
            --primary-light: #253255;
            --primary-dark: #0f1a2e;
            --accent: #e8a817;
            --accent-light: #f5c34b;
            --accent-dark: #c48a0f;
            --teal: #0d9488;
            --teal-light: #14b8a6;
            --bg: #f6f7fb;
            --bg-alt: #eef1f7;
            --surface: #ffffff;
            --text: #1e293b;
            --text-secondary: #64748b;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 2px rgba(15, 26, 46, 0.04);
            --shadow: 0 4px 16px rgba(15, 26, 46, 0.07);
            --shadow-md: 0 8px 30px rgba(15, 26, 46, 0.10);
            --shadow-lg: 0 16px 48px rgba(15, 26, 46, 0.13);
            --shadow-xl: 0 24px 64px rgba(15, 26, 46, 0.16);
            --sidebar-width: 260px;
            --topbar-height: 60px;
            --transition-fast: 0.18s ease;
            --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
        }

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

        html {
            font-size: 16px;
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            outline: none;
            transition: all var(--transition-fast);
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }
        ul,
        ol {
            list-style: none;
        }
        input {
            font-family: inherit;
            font-size: inherit;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--primary);
        }

        /* ========== SIDEBAR ========== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--primary);
            color: #e8ecf4;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            overflow-x: hidden;
            transition: transform var(--transition-slow);
            box-shadow: var(--shadow-lg);
        }
        .sidebar-brand {
            padding: 26px 24px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            flex-shrink: 0;
        }
        .sidebar-brand a {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.25rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .sidebar-brand a:hover {
            color: var(--accent-light);
        }
        .sidebar-brand .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--primary-dark);
            flex-shrink: 0;
            font-weight: 900;
        }
        .sidebar-nav {
            flex: 1;
            padding: 16px 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 18px;
            border-radius: var(--radius);
            color: #c5cddb;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .sidebar-nav a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #ffffff;
        }
        .sidebar-nav a.active {
            background: rgba(232, 168, 23, 0.15);
            color: var(--accent-light);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--accent);
        }
        .sidebar-nav .nav-badge {
            margin-left: auto;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 9px;
            border-radius: 20px;
            letter-spacing: 0.03em;
        }
        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            flex-shrink: 0;
            font-size: 0.78rem;
            color: #8892a8;
        }
        .sidebar-footer .sf-status {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 4px;
        }
        .sidebar-footer .sf-dot {
            width: 8px;
            height: 8px;
            background: #22c55e;
            border-radius: 50%;
            flex-shrink: 0;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(34, 197, 94, 0);
            }
        }

        /* ========== TOPBAR (mobile) ========== */
        .topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--topbar-height);
            background: var(--primary);
            z-index: 999;
            align-items: center;
            padding: 0 16px;
            gap: 12px;
            box-shadow: var(--shadow-md);
        }
        .topbar .tb-brand {
            font-weight: 800;
            font-size: 1.1rem;
            color: #fff;
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .topbar .tb-brand .logo-icon {
            display: inline-flex;
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            border-radius: 6px;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            color: var(--primary-dark);
            font-weight: 900;
            margin-right: 8px;
            vertical-align: middle;
        }
        .topbar .hamburger {
            margin-left: auto;
            background: none;
            color: #fff;
            font-size: 1.5rem;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            line-height: 1;
            flex-shrink: 0;
        }
        .topbar .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        /* Overlay */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 998;
            opacity: 0;
            transition: opacity var(--transition-slow);
            pointer-events: none;
        }
        .sidebar-overlay.show {
            opacity: 1;
            pointer-events: auto;
        }

        /* ========== MAIN CONTENT ========== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 40px;
        }
        .container-narrow {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 40px;
        }
        section {
            padding: 72px 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-dark);
            background: rgba(232, 168, 23, 0.1);
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-subtitle {
            margin: 0 auto;
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            padding: 100px 0 90px;
            background: var(--primary);
            color: #ffffff;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
            filter: blur(1px);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 39, 68, 0.75) 0%, rgba(26, 39, 68, 0.92) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .hero-text h1 {
            font-size: 3rem;
            font-weight: 900;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
            line-height: 1.2;
        }
        .hero-text h1 .highlight {
            color: var(--accent-light);
            position: relative;
        }
        .hero-text p {
            font-size: 1.15rem;
            color: #c5cddb;
            margin-bottom: 32px;
            line-height: 1.8;
            max-width: 460px;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232, 168, 23, 0.35);
            color: var(--primary-dark);
        }
        .btn-outline {
            background: transparent;
            color: #ffffff;
            border-color: rgba(255, 255, 255, 0.35);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #ffffff;
            transform: translateY(-2px);
            color: #ffffff;
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.82rem;
        }
        .btn-lg {
            padding: 16px 34px;
            font-size: 1.05rem;
        }
        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-card-stack {
            position: relative;
            width: 100%;
            max-width: 380px;
        }
        .hero-card-stack .hc-card {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 24px;
            position: relative;
            z-index: 1;
        }
        .hero-card-stack .hc-card h3 {
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 6px;
        }
        .hero-card-stack .hc-card p {
            color: #bcc5d4;
            font-size: 0.9rem;
            margin: 0;
        }
        .hero-card-stack .hc-card-shadow {
            position: absolute;
            top: 14px;
            left: 14px;
            right: -14px;
            bottom: -14px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-lg);
            z-index: 0;
        }
        .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 28px;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .hs-num {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-light);
        }
        .hero-stat .hs-label {
            font-size: 0.8rem;
            color: #8892a8;
            margin-top: 2px;
        }

        /* ========== FEATURES ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--teal-light));
            transform: scaleX(0);
            transform-origin: center;
            transition: transform var(--transition-slow);
            border-radius: 0 0 var(--radius-sm) var(--radius-sm);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .feature-card:hover::before {
            transform: scaleX(1);
        }
        .feature-card .fc-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            background: rgba(232, 168, 23, 0.1);
            color: var(--accent-dark);
        }
        .feature-card h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .feature-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ========== CATEGORY ENTRY ========== */
        .category-entry-section {
            background: var(--bg-alt);
        }
        .cat-entry-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            background: var(--surface);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .cat-entry-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .cat-entry-card .cec-img {
            min-height: 300px;
            background: url('/assets/images/coverpic/cover-1.png') center / cover no-repeat;
            position: relative;
        }
        .cat-entry-card .cec-body {
            padding: 40px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .cat-entry-card .cec-body h3 {
            font-size: 1.6rem;
            margin-bottom: 10px;
        }
        .cat-entry-card .cec-body p {
            color: var(--text-secondary);
            margin-bottom: 20px;
            line-height: 1.7;
        }
        .tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            background: rgba(13, 148, 136, 0.1);
            color: var(--teal);
        }
        .tag-accent {
            background: rgba(232, 168, 23, 0.12);
            color: var(--accent-dark);
        }

        /* ========== CMS LIST ========== */
        .cms-list-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .cms-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .cms-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .cms-card .cms-card-img {
            height: 180px;
            background: var(--bg-alt) center / cover no-repeat;
            position: relative;
            flex-shrink: 0;
        }
        .cms-card .cms-card-img .cms-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 14px;
            letter-spacing: 0.03em;
        }
        .cms-card .cms-card-body {
            padding: 20px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .cms-card .cms-card-body h4 {
            font-size: 1rem;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .cms-card .cms-card-body h4 a {
            color: var(--primary);
        }
        .cms-card .cms-card-body h4 a:hover {
            color: var(--accent-dark);
        }
        .cms-card .cms-card-body .cms-excerpt {
            font-size: 0.84rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .cms-card .cms-card-body .cms-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 12px;
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .cms-empty {
            text-align: center;
            padding: 40px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            grid-column: 1 / -1;
        }

        /* ========== STATS ========== */
        .stats-section {
            background: var(--primary);
            color: #fff;
        }
        .stats-section .section-title {
            color: #fff;
        }
        .stats-section .section-subtitle {
            color: #bcc5d4;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }
        .stat-item .stat-num {
            font-size: 3rem;
            font-weight: 900;
            color: var(--accent-light);
            line-height: 1;
        }
        .stat-item .stat-unit {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent-light);
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: #8892a8;
            margin-top: 6px;
        }

        /* ========== PROCESS ========== */
        .process-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .process-item {
            text-align: center;
            position: relative;
            padding: 28px 18px;
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .process-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .process-item .pi-step {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 900;
            font-size: 1.1rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
        }
        .process-item h4 {
            font-size: 1rem;
            margin-bottom: 6px;
        }
        .process-item p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 0.98rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--primary);
            user-select: none;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-item[open] {
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--primary);
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: #c5cddb;
            font-size: 1rem;
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--primary-dark);
            color: #8892a8;
            padding: 48px 0 28px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.9rem;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .footer-col a {
            display: block;
            font-size: 0.84rem;
            color: #8892a8;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-light);
        }
        .footer-col .fc-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }
        .footer-col .fc-desc {
            font-size: 0.82rem;
            line-height: 1.6;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.78rem;
            color: #667085;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1200px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cms-list-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .process-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-visual {
                display: none;
            }
            .hero-text h1 {
                font-size: 2.4rem;
            }
            section {
                padding: 56px 0;
            }
        }

        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay {
                display: block;
            }
            .topbar {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: var(--topbar-height);
            }
            .container,
            .container-narrow {
                padding: 0 24px;
            }
            .hero {
                padding: 60px 0 50px;
                min-height: auto;
            }
            .hero-text h1 {
                font-size: 2rem;
            }
            .hero-stats {
                gap: 20px;
            }
            .cat-entry-card {
                grid-template-columns: 1fr;
            }
            .cat-entry-card .cec-img {
                min-height: 200px;
            }
            .section-title {
                font-size: 1.7rem;
            }
            section {
                padding: 44px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .cms-list-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .process-list {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .hero-text h1 {
                font-size: 1.7rem;
            }
            .hero-text p {
                font-size: 0.95rem;
            }
            .btn {
                padding: 11px 22px;
                font-size: 0.88rem;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .hero-stats {
                flex-wrap: wrap;
                gap: 16px;
            }
            .hero-stat .hs-num {
                font-size: 1.5rem;
            }
            .stat-item .stat-num {
                font-size: 2.2rem;
            }
            .container,
            .container-narrow {
                padding: 0 16px;
            }
            section {
                padding: 36px 0;
            }
            .cat-entry-card .cec-body {
                padding: 24px 20px;
            }
            .feature-card {
                padding: 20px 16px;
            }
        }

        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .hero-text h1 {
                font-size: 1.45rem;
            }
            .hero-btns {
                flex-direction: column;
            }
            .hero-btns .btn {
                width: 100%;
                justify-content: center;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .btn-lg {
                padding: 13px 24px;
                font-size: 0.9rem;
            }
            .cms-card .cms-card-img {
                height: 160px;
            }
        }

/* roulang page: article */
:root {
            --sidebar-width: 260px;
            --sidebar-width-tablet: 200px;
            --sidebar-bg: #0b1120;
            --sidebar-bg-hover: #151d30;
            --sidebar-text: #c8d6e5;
            --sidebar-active-bg: #1a2744;
            --sidebar-active-text: #f0c060;
            --sidebar-accent: #f0c060;
            --primary: #1a3a5c;
            --primary-light: #2563a0;
            --accent: #f0c060;
            --accent-hover: #e0a830;
            --bg: #f5f6f8;
            --surface: #ffffff;
            --text: #1e293b;
            --text-secondary: #64748b;
            --text-muted: #94a3b8;
            --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-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.05);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            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;
        }

        /* ========== SIDEBAR ========== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--sidebar-bg);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            overflow-x: hidden;
            transition: transform var(--transition), width var(--transition);
            box-shadow: 2px 0 24px rgba(0,0,0,0.18);
        }

        .sidebar-brand {
            padding: 28px 24px 20px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            flex-shrink: 0;
        }

        .sidebar-brand a {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.25rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .sidebar-brand .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent) 0%, #d4942a 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #1a1a2e;
            flex-shrink: 0;
        }

        .sidebar-nav {
            flex: 1;
            padding: 20px 16px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius);
            color: var(--sidebar-text);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .sidebar-nav a:hover {
            background: var(--sidebar-bg-hover);
            color: #ffffff;
        }

        .sidebar-nav a.active {
            background: var(--sidebar-active-bg);
            color: var(--sidebar-active-text);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--sidebar-accent);
        }

        .sidebar-nav a .nav-badge {
            margin-left: auto;
            font-size: 0.7rem;
            padding: 3px 10px;
            border-radius: 20px;
            background: rgba(240,192,96,0.18);
            color: var(--sidebar-accent);
            font-weight: 600;
            letter-spacing: 0.04em;
            flex-shrink: 0;
        }

        .sidebar-footer {
            padding: 16px 24px 24px;
            border-top: 1px solid rgba(255,255,255,0.06);
            flex-shrink: 0;
            font-size: 0.78rem;
            color: rgba(255,255,255,0.35);
            text-align: center;
        }

        /* ========== MAIN CONTENT ========== */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            transition: margin-left var(--transition);
        }

        /* Mobile top bar */
        .mobile-topbar {
            display: none;
            position: sticky;
            top: 0;
            z-index: 900;
            background: #ffffff;
            border-bottom: 1px solid var(--border);
            padding: 12px 20px;
            align-items: center;
            gap: 16px;
            box-shadow: var(--shadow-sm);
        }

        .mobile-topbar .hamburger {
            font-size: 1.4rem;
            color: var(--text);
            padding: 6px;
            line-height: 1;
            flex-shrink: 0;
        }

        .mobile-topbar .topbar-logo {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--primary);
            white-space: nowrap;
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.5);
            z-index: 999;
        }

        .sidebar-overlay.visible {
            display: block;
        }

        /* ========== ARTICLE CONTENT AREA ========== */
        .article-container {
            max-width: 860px;
            margin: 0 auto;
            padding: 36px 28px 60px;
            width: 100%;
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-light);
        }

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

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

        .breadcrumb .separator {
            color: var(--text-muted);
            font-size: 0.7rem;
        }

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

        .article-cover {
            width: 100%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 28px;
            box-shadow: var(--shadow-md);
            aspect-ratio: 16 / 9;
            background: #e8ecf1;
        }

        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

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

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(26,58,92,0.07);
            color: var(--primary-light);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .article-date {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .article-header h1 {
            font-size: 1.9rem;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text);
            letter-spacing: 0.01em;
            margin: 0;
        }

        /* Article body */
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }

        .article-body h2 {
            font-size: 1.45rem;
            font-weight: 700;
            margin: 2em 0 0.75em;
            color: #0f1d2f;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border-light);
        }

        .article-body h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 1.6em 0 0.6em;
            color: #1e293b;
        }

        .article-body p {
            margin-bottom: 1.15em;
        }

        .article-body ul, .article-body ol {
            margin: 1em 0;
            padding-left: 1.6em;
        }

        .article-body li {
            margin-bottom: 0.45em;
        }

        .article-body blockquote {
            margin: 1.5em 0;
            padding: 18px 24px;
            border-left: 4px solid var(--accent);
            background: #fdfaf3;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: #5c4a1f;
            font-style: italic;
            font-size: 0.98rem;
        }

        .article-body img {
            border-radius: var(--radius);
            margin: 1.5em 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body code {
            background: #f1f5f9;
            padding: 2px 8px;
            border-radius: 4px;
            font-family: var(--font-mono);
            font-size: 0.9em;
            color: #d44;
        }

        .article-body pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 1.5em 0;
            font-family: var(--font-mono);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .article-body pre code {
            background: none;
            padding: 0;
            color: inherit;
        }

        /* Not found */
        .not-found-card {
            text-align: center;
            padding: 60px 30px;
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }

        .not-found-card .nf-icon {
            font-size: 3.5rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            display: block;
        }

        .not-found-card h2 {
            font-size: 1.5rem;
            margin-bottom: 12px;
            color: var(--text);
        }

        .not-found-card p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 24px;
            background: var(--primary);
            color: #fff;
            border-radius: 25px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
        }

        .btn-back:hover {
            background: var(--primary-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        /* Related posts */
        .related-section {
            margin-top: 48px;
            padding-top: 36px;
            border-top: 1px solid var(--border);
        }

        .related-section h2 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .related-section h2::before {
            content: '';
            width: 4px;
            height: 22px;
            background: var(--accent);
            border-radius: 2px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 20px;
        }

        .related-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .related-card-img {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #e8ecf1;
        }

        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .related-card-body {
            padding: 16px 18px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card-body .rc-tag {
            font-size: 0.72rem;
            color: var(--primary-light);
            font-weight: 600;
            margin-bottom: 6px;
            letter-spacing: 0.03em;
        }

        .related-card-body h3 {
            font-size: 0.95rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 8px;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-body .rc-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: auto;
        }

        /* Footer */
        .site-footer {
            background: #0f172a;
            color: #c8d6e5;
            padding: 48px 0 0;
            margin-top: auto;
        }

        .site-footer .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

        .footer-col .fc-brand {
            font-size: 1.15rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
        }

        .footer-col .fc-desc {
            font-size: 0.85rem;
            line-height: 1.7;
            color: #94a3b8;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: #94a3b8;
            padding: 5px 0;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.8rem;
            color: #64748b;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .sidebar {
                width: var(--sidebar-width-tablet);
            }
            .main-wrapper {
                margin-left: var(--sidebar-width-tablet);
            }
            .article-container {
                padding: 28px 22px 48px;
            }
            .article-header h1 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .related-grid {
                grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .main-wrapper {
                margin-left: 0;
            }
            .mobile-topbar {
                display: flex;
            }
            .sidebar-overlay.visible {
                display: block;
            }
            .article-container {
                padding: 20px 16px 40px;
            }
            .article-header h1 {
                font-size: 1.4rem;
            }
            .article-body {
                font-size: 1rem;
            }
            .article-body h2 {
                font-size: 1.25rem;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 520px) {
            .sidebar {
                width: 260px;
            }
            .article-container {
                padding: 16px 12px 32px;
            }
            .article-header h1 {
                font-size: 1.25rem;
            }
            .article-cover {
                border-radius: var(--radius);
            }
            .breadcrumb {
                font-size: 0.8rem;
                margin-bottom: 16px;
                padding-bottom: 14px;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .related-card-body h3 {
                font-size: 0.9rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .not-found-card {
                padding: 40px 20px;
            }
        }

/* roulang page: category1 */
/* ==================== 设计变量 ==================== */
        :root {
            --color-primary: #1a1f3c;
            --color-primary-light: #252b4d;
            --color-primary-dark: #111530;
            --color-accent: #f0a500;
            --color-accent-hover: #e69500;
            --color-accent-light: #fff3d6;
            --color-bg: #f6f7fa;
            --color-bg-white: #ffffff;
            --color-bg-card: #ffffff;
            --color-text: #2c3040;
            --color-text-heading: #1a1f3c;
            --color-text-weak: #6b7084;
            --color-text-muted: #9498a8;
            --color-border: #e2e5ed;
            --color-border-light: #eef0f5;
            --color-success: #22c55e;
            --color-success-bg: #f0fdf4;
            --color-warning: #f59e0b;
            --color-warning-bg: #fffbeb;
            --color-info: #3b82f6;
            --color-info-bg: #eff6ff;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07), 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);
            --sidebar-width: 250px;
            --sidebar-collapsed-width: 0px;
            --header-height: 0px;
            --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ==================== 基础 Reset ==================== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
        }

        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--color-accent);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            cursor: pointer;
        }

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--color-text-heading);
            line-height: 1.35;
            font-weight: 700;
        }

        h1 {
            font-size: 2rem;
        }
        h2 {
            font-size: 1.6rem;
        }
        h3 {
            font-size: 1.25rem;
        }
        h4 {
            font-size: 1.1rem;
        }

        /* ==================== 侧边栏导航 ==================== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: linear-gradient(180deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, var(--color-primary-light) 100%);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            transition: transform var(--transition-slow), box-shadow var(--transition-slow);
            box-shadow: 4px 0 24px rgba(0, 0, 0, 0.15);
            overflow-y: auto;
        }

        .sidebar-logo {
            padding: 28px 24px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            margin-bottom: 8px;
        }

        .sidebar-logo a {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .sidebar-logo a:hover {
            color: var(--color-accent);
        }

        .sidebar-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--color-accent);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--color-primary-dark);
            flex-shrink: 0;
        }

        .sidebar-nav {
            flex: 1;
            padding: 12px 16px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 16px;
            border-radius: var(--radius-md);
            color: rgba(255, 255, 255, 0.78);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .sidebar-nav a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
            transform: translateX(2px);
        }

        .sidebar-nav a.active {
            background: rgba(255, 255, 255, 0.14);
            color: #ffffff;
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--color-accent);
        }

        .sidebar-nav a.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--color-accent);
            border-radius: 0 3px 3px 0;
        }

        .nav-badge {
            display: inline-flex;
            align-items: center;
            padding: 2px 8px;
            font-size: 0.72rem;
            font-weight: 600;
            background: var(--color-accent);
            color: var(--color-primary-dark);
            border-radius: 20px;
            margin-left: auto;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        /* 侧边栏底部 */
        .sidebar-footer {
            padding: 16px 20px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            margin-top: auto;
        }

        .sidebar-footer .sf-info {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.5);
            text-align: center;
            line-height: 1.5;
        }

        /* ==================== 主内容区 ==================== */
        .main-wrapper {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            transition: margin-left var(--transition-slow);
        }

        /* ==================== 移动端菜单按钮 ==================== */
        .mobile-menu-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            width: 44px;
            height: 44px;
            background: var(--color-primary);
            color: #ffffff;
            border-radius: var(--radius-md);
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: var(--shadow-lg);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

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

        /* 遮罩层 */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            transition: opacity var(--transition-slow);
            cursor: pointer;
        }

        .sidebar-overlay.active {
            display: block;
            opacity: 1;
        }

        /* ==================== 容器 ==================== */
        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 28px;
        }

        .container-wide {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 28px;
        }

        /* ==================== 面包屑 ==================== */
        .breadcrumb-bar {
            background: var(--color-bg-white);
            border-bottom: 1px solid var(--color-border-light);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 50;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--color-text-weak);
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: var(--color-border);
            font-size: 0.7rem;
        }

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

        /* ==================== 分类Banner ==================== */
        .category-banner {
            position: relative;
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 40%, #1e2a5a 100%);
            padding: 60px 0 50px;
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(240, 165, 0, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-banner::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-banner .banner-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }

        .category-banner .banner-text {
            flex: 1;
            min-width: 280px;
        }

        .category-banner .banner-text .cat-label {
            display: inline-block;
            padding: 5px 14px;
            background: rgba(240, 165, 0, 0.2);
            color: var(--color-accent);
            font-size: 0.82rem;
            font-weight: 600;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .category-banner h1 {
            color: #ffffff;
            font-size: 2.2rem;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .category-banner .banner-desc {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            max-width: 560px;
            line-height: 1.7;
        }

        .category-banner .banner-stats {
            display: flex;
            gap: 32px;
            margin-top: 28px;
        }

        .category-banner .banner-stat {
            text-align: center;
        }

        .category-banner .banner-stat .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--color-accent);
            letter-spacing: 1px;
        }

        .category-banner .banner-stat .stat-label {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }

        .category-banner .banner-image {
            flex-shrink: 0;
            width: 220px;
            height: 220px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            border: 3px solid rgba(255, 255, 255, 0.15);
        }

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

        /* ==================== 板块通用样式 ==================== */
        .section {
            padding: 56px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-header h2 {
            font-size: 1.7rem;
            color: var(--color-text-heading);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }

        .section-header .section-subtitle {
            color: var(--color-text-weak);
            font-size: 0.95rem;
            max-width: 500px;
            margin: 0 auto;
        }

        .section-label {
            display: inline-block;
            padding: 4px 12px;
            background: var(--color-accent-light);
            color: var(--color-accent);
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 20px;
            margin-bottom: 10px;
            letter-spacing: 1px;
        }

        /* ==================== 步骤流程板块 ==================== */
        .steps-section {
            background: var(--color-bg-white);
        }

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

        .step-card {
            background: var(--color-bg);
            border-radius: var(--radius-lg);
            padding: 32px 24px 28px;
            position: relative;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            text-align: center;
        }

        .step-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-accent);
        }

        .step-card .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #ffffff;
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            z-index: 2;
            box-shadow: 0 4px 14px rgba(26, 31, 60, 0.3);
        }

        .step-card .step-number.accent {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            box-shadow: 0 4px 14px rgba(240, 165, 0, 0.35);
        }

        .step-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--color-text-heading);
        }

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

        .step-card .step-icon-img {
            width: 80px;
            height: 80px;
            margin: 0 auto 16px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .step-card .step-icon-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ==================== 文章列表板块 ==================== */
        .articles-section {
            background: var(--color-bg);
        }

        .articles-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .article-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .article-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: var(--color-accent);
        }

        .article-card .card-img {
            width: 100%;
            height: 200px;
            overflow: hidden;
            flex-shrink: 0;
        }

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

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

        .article-card .card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-card .card-tag {
            display: inline-block;
            padding: 3px 10px;
            font-size: 0.72rem;
            font-weight: 600;
            background: var(--color-info-bg);
            color: var(--color-info);
            border-radius: 4px;
            margin-bottom: 10px;
            align-self: flex-start;
            letter-spacing: 0.3px;
        }

        .article-card h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--color-text-heading);
            line-height: 1.4;
        }

        .article-card .card-excerpt {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 14px;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            border-top: 1px solid var(--color-border-light);
            padding-top: 12px;
            margin-top: auto;
        }

        .article-card .card-meta i {
            margin-right: 4px;
        }

        .article-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-accent);
            margin-top: 10px;
            transition: gap var(--transition-fast);
        }

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

        /* ==================== 提示/注意事项板块 ==================== */
        .tips-section {
            background: var(--color-bg-white);
        }

        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .tip-card {
            display: flex;
            gap: 16px;
            padding: 24px;
            background: var(--color-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            align-items: flex-start;
        }

        .tip-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent);
        }

        .tip-card .tip-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .tip-card .tip-icon.warning {
            background: var(--color-warning-bg);
            color: var(--color-warning);
        }

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

        .tip-card .tip-icon.info {
            background: var(--color-info-bg);
            color: var(--color-info);
        }

        .tip-card .tip-content h4 {
            font-size: 1rem;
            margin-bottom: 4px;
            color: var(--color-text-heading);
        }

        .tip-card .tip-content p {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            line-height: 1.5;
        }

        /* ==================== FAQ板块 ==================== */
        .faq-section {
            background: var(--color-bg);
        }

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

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

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

        .faq-question {
            padding: 18px 22px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text-heading);
            transition: color var(--transition-fast);
            user-select: none;
        }

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

        .faq-question .faq-arrow {
            flex-shrink: 0;
            transition: transform var(--transition-base);
            color: var(--color-text-muted);
            font-size: 0.8rem;
        }

        .faq-item.open .faq-question .faq-arrow {
            transform: rotate(180deg);
            color: var(--color-accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        .faq-answer p {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.7;
        }

        /* ==================== CTA板块 ==================== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, #1e2a5a 100%);
            padding: 56px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(240, 165, 0, 0.13) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            color: #ffffff;
            font-size: 1.8rem;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            max-width: 500px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: 30px;
            transition: all var(--transition-fast);
            letter-spacing: 0.4px;
            cursor: pointer;
        }

        .btn-accent {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            box-shadow: 0 4px 16px rgba(240, 165, 0, 0.35);
        }

        .btn-accent:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 6px 24px rgba(240, 165, 0, 0.45);
            transform: translateY(-2px);
            color: var(--color-primary-dark);
        }

        .btn-outline-light {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #ffffff;
            color: #ffffff;
            transform: translateY(-2px);
        }

        .btn-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
        }

        /* ==================== 页脚 ==================== */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 0;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-col .fc-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .footer-col .fc-desc {
            font-size: 0.85rem;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.55);
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            transition: all var(--transition-fast);
        }

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

        .footer-bottom {
            text-align: center;
            padding: 18px 0;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ==================== 响应式设计 ==================== */
        @media (max-width: 1024px) {
            :root {
                --sidebar-width: 220px;
            }

            .category-banner h1 {
                font-size: 1.8rem;
            }

            .category-banner .banner-image {
                width: 170px;
                height: 170px;
            }

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

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

            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
                gap: 24px;
            }

            .footer-col:last-child {
                grid-column: span 3;
            }

            .container {
                padding: 0 20px;
            }

            .container-wide {
                padding: 0 20px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --sidebar-width: 260px;
            }

            .sidebar {
                transform: translateX(-100%);
                box-shadow: none;
            }

            .sidebar.open {
                transform: translateX(0);
                box-shadow: 8px 0 32px rgba(0, 0, 0, 0.4);
            }

            .sidebar-overlay.active {
                display: block;
            }

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

            .main-wrapper {
                margin-left: 0;
            }

            .category-banner {
                padding: 44px 0 36px;
            }

            .category-banner .banner-content {
                flex-direction: column;
                text-align: center;
                gap: 24px;
            }

            .category-banner h1 {
                font-size: 1.6rem;
            }

            .category-banner .banner-desc {
                margin: 0 auto;
            }

            .category-banner .banner-stats {
                justify-content: center;
            }

            .category-banner .banner-image {
                width: 150px;
                height: 150px;
            }

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

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

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

            .section {
                padding: 40px 0;
            }

            .section-header h2 {
                font-size: 1.4rem;
            }

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

            .footer-col:first-child {
                grid-column: span 2;
            }

            .footer-col:last-child {
                grid-column: span 2;
            }

            .container {
                padding: 0 16px;
            }

            .container-wide {
                padding: 0 16px;
            }

            .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

        @media (max-width: 520px) {
            .category-banner h1 {
                font-size: 1.4rem;
            }

            .category-banner .banner-desc {
                font-size: 0.9rem;
            }

            .category-banner .banner-image {
                width: 120px;
                height: 120px;
            }

            .category-banner .banner-stats {
                gap: 18px;
            }

            .category-banner .banner-stat .stat-num {
                font-size: 1.4rem;
            }

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

            .step-card {
                padding: 24px 18px 20px;
            }

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

            .article-card .card-img {
                height: 180px;
            }

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

            .section {
                padding: 32px 0;
            }

            .section-header h2 {
                font-size: 1.3rem;
            }

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

            .footer-col:first-child {
                grid-column: span 1;
            }

            .footer-col:last-child {
                grid-column: span 1;
            }

            .faq-question {
                font-size: 0.9rem;
                padding: 15px 16px;
            }

            .faq-answer p {
                font-size: 0.85rem;
            }

            .btn {
                padding: 11px 22px;
                font-size: 0.88rem;
            }

            .cta-section h2 {
                font-size: 1.4rem;
            }
        }