/* roulang page: index */
/* ===== CSS Design System ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a42;
            --accent: #c9a84c;
            --accent-light: #e0c56a;
            --accent-dark: #a88a30;
            --bg-body: #f5f6fa;
            --bg-white: #ffffff;
            --bg-light: #eef0f7;
            --bg-dark: #0f1a42;
            --text-primary: #1a1a2e;
            --text-body: #2d2d44;
            --text-muted: #6c757d;
            --text-light: #f0f0f5;
            --text-white: #ffffff;
            --border: #dce0e8;
            --border-light: #e8ebf2;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26,42,108,0.06);
            --shadow-md: 0 6px 24px rgba(26,42,108,0.10);
            --shadow-lg: 0 12px 40px rgba(26,42,108,0.14);
            --shadow-xl: 0 20px 60px rgba(26,42,108,0.18);
            --transition: all 0.25s ease;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --topbar-height: 40px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-body);
            background: var(--bg-body);
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; color: var(--text-primary); font-weight: 700; }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.1rem; margin-bottom: 0.75rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Top Bar ===== */
        .topbar {
            background: var(--primary-dark);
            color: var(--text-light);
            font-size: 0.82rem;
            height: var(--topbar-height);
            display: flex;
            align-items: center;
        }
        .topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .topbar a {
            color: var(--accent-light);
            font-weight: 500;
        }
        .topbar a:hover { color: #fff; }
        .topbar-left span { margin-right: 20px; }
        .topbar-left i { margin-right: 6px; color: var(--accent); }
        .topbar-right i { margin-right: 4px; }

        /* ===== Header / Nav ===== */
        .header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-height);
            display: flex;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.8rem;
        }
        .logo span { color: var(--primary); }
        .logo .accent { color: var(--accent); }
        .logo:hover { color: var(--primary); }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: var(--primary);
            background: var(--bg-light);
        }
        .nav-list a.active {
            color: var(--bg-white);
            background: var(--primary);
            box-shadow: 0 2px 12px rgba(26,42,108,0.25);
        }
        .nav-list a.active::after {
            display: none;
        }
        .nav-cta {
            background: var(--accent) !important;
            color: var(--primary-dark) !important;
            font-weight: 700 !important;
            padding: 10px 24px !important;
            border-radius: var(--radius-md) !important;
            box-shadow: 0 4px 14px rgba(201,168,76,0.35);
        }
        .nav-cta:hover {
            background: var(--accent-light) !important;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(201,168,76,0.45) !important;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            background: none;
            border: none;
        }
        .hamburger span {
            width: 28px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
            transition: var(--transition);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 80px 0;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,66,0.78) 0%, rgba(26,42,108,0.65) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: var(--text-white);
        }
        .hero h1 {
            font-size: 3.4rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -1px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.25);
        }
        .hero h1 .highlight {
            color: var(--accent);
            background: linear-gradient(135deg, var(--accent), #f0d68a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 680px;
            margin: 0 auto 32px;
            color: rgba(255,255,255,0.88);
            line-height: 1.7;
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 4px 18px rgba(201,168,76,0.4);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(201,168,76,0.5);
            color: var(--primary-dark);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255,255,255,0.7);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.12);
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }

        /* ===== Section Shared ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .section-dark h2, .section-dark h3 { color: var(--text-white); }
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 48px;
        }
        .section-header h2 {
            position: relative;
            display: inline-block;
        }
        .section-header h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 1.1rem;
            margin-top: 12px;
        }
        .section-dark .section-header p { color: rgba(255,255,255,0.65); }

        /* ===== Feature / Intro ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .intro-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        .intro-text h3 {
            font-size: 1.8rem;
            margin-bottom: 16px;
        }
        .intro-text p {
            color: var(--text-muted);
            font-size: 1.05rem;
            line-height: 1.7;
        }
        .intro-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .stat-item {
            background: var(--bg-light);
            padding: 20px 16px;
            border-radius: var(--radius-md);
            text-align: center;
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== Category Cards ===== */
        .cat-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 28px;
        }
        .cat-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .cat-card-img {
            height: 180px;
            background: var(--bg-light);
            overflow: hidden;
        }
        .cat-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .cat-card:hover .cat-card-img img { transform: scale(1.05); }
        .cat-card-body {
            padding: 24px 22px 28px;
        }
        .cat-card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .cat-card-body p {
            color: var(--text-muted);
            font-size: 0.92rem;
            margin-bottom: 16px;
        }
        .cat-tag {
            display: inline-block;
            background: var(--bg-light);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
        }

        /* ===== CMS List / Latest ===== */
        .cms-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .cms-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 22px 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .cms-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .cms-item .cms-cat {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent-dark);
            background: rgba(201,168,76,0.12);
            padding: 2px 14px;
            border-radius: 20px;
            display: inline-block;
            align-self: flex-start;
            margin-bottom: 8px;
        }
        .cms-item h4 {
            font-size: 1.08rem;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .cms-item h4 a {
            color: var(--text-primary);
        }
        .cms-item h4 a:hover { color: var(--primary); }
        .cms-item .cms-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            flex: 1;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .cms-item .cms-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
        }
        .cms-item .cms-meta i { margin-right: 4px; }
        .cms-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px;
            color: var(--text-muted);
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border);
            font-size: 1.05rem;
        }

        /* ===== Features Grid ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-white);
            padding: 32px 26px;
            border-radius: var(--radius-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            background: var(--bg-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: var(--accent);
        }
        .feature-card h4 { margin-bottom: 8px; }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-sm); }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 1rem;
            transition: var(--transition);
        }
        .faq-question i {
            color: var(--accent);
            transition: var(--transition);
            font-size: 1.1rem;
        }
        .faq-question.active i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            padding: 72px 0;
            text-align: center;
            color: var(--text-white);
        }
        .cta-section h2 {
            color: var(--text-white);
            font-size: 2.4rem;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0 auto 32px;
            font-size: 1.1rem;
        }
        .cta-section .btn-primary {
            font-size: 1.1rem;
            padding: 16px 44px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo {
            color: var(--text-white);
            font-size: 1.4rem;
            margin-bottom: 12px;
        }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h5 {
            color: var(--text-white);
            font-size: 1rem;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: var(--accent-light); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .intro-grid { grid-template-columns: 1fr; gap: 32px; }
            .intro-image { order: -1; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            h1 { font-size: 2.4rem; }
            .hero h1 { font-size: 2.6rem; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; --topbar-height: 36px; }
            .topbar-left span { display: none; }
            .topbar-left i { margin-right: 0; }
            .hamburger { display: flex; }
            .nav-list {
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 24px;
                gap: 6px;
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                display: none;
                border-top: 1px solid var(--border-light);
            }
            .nav-list.open { display: flex; }
            .nav-list a { width: 100%; padding: 12px 16px; }
            .nav-list .nav-cta { text-align: center; }
            .hero { min-height: 400px; padding: 60px 0; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .section { padding: 56px 0; }
            h2 { font-size: 1.7rem; }
            .intro-stats { grid-template-columns: repeat(3, 1fr); gap: 12px; }
            .stat-number { font-size: 1.5rem; }
            .cms-list { grid-template-columns: 1fr; }
            .cat-cards { grid-template-columns: 1fr 1fr; }
            .features-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .cta-section h2 { font-size: 1.8rem; }
            .btn { padding: 12px 28px; font-size: 0.95rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero h1 { font-size: 1.6rem; }
            .hero p { font-size: 0.92rem; }
            .hero-btns { flex-direction: column; align-items: center; }
            .btn { width: 100%; justify-content: center; }
            .cat-cards { grid-template-columns: 1fr; }
            .features-grid { grid-template-columns: 1fr; }
            .intro-stats { grid-template-columns: 1fr; }
            .section-header h2::after { width: 40px; }
            .stat-item { padding: 16px; }
            .cms-item { padding: 18px; }
            .faq-question { font-size: 0.92rem; padding: 14px 18px; }
            .footer { padding-top: 36px; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #1a2a6c;
  --primary-light: #2d4a8e;
  --primary-dark: #0f1a4a;
  --secondary: #b8860b;
  --accent: #d4a843;
  --accent-light: #f0d080;
  --gradient-main: linear-gradient(135deg, #1a2a6c 0%, #2d4a8e 50%, #b8860b 100%);
  --gradient-card: linear-gradient(145deg, #ffffff 0%, #f8f6f2 100%);
  --bg-body: #faf9f6;
  --bg-section-light: #ffffff;
  --bg-section-alt: #f3f1ed;
  --bg-dark: #0f1a4a;
  --text-primary: #1e1e2a;
  --text-secondary: #4a4a5a;
  --text-weak: #8a8a9a;
  --text-inverse: #f5f0e8;
  --border-light: #e8e4dc;
  --border-card: #ddd8ce;
  --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
  --shadow-md: 0 6px 24px rgba(26, 42, 108, 0.10);
  --shadow-lg: 0 16px 48px rgba(26, 42, 108, 0.14);
  --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 12px 36px rgba(26, 42, 108, 0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --container-max: 1200px;
  --header-top-height: 40px;
  --nav-height: 72px;
}
/* ===== Reset / Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-family);font-size:16px;line-height:1.7;color:var(--text-primary);background:var(--bg-body);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--secondary)}
button,input,select,textarea{font-family:inherit;font-size:inherit;transition:var(--transition)}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{line-height:1.25;font-weight:700;color:var(--text-primary)}
h1{font-size:2.8rem;letter-spacing:-0.02em}
h2{font-size:2.2rem;letter-spacing:-0.01em}
h3{font-size:1.6rem}
h4{font-size:1.25rem}
p{margin-bottom:1rem;color:var(--text-secondary)}
.container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-alt{background:var(--bg-section-alt)}
.section-dark{background:var(--bg-dark);color:var(--text-inverse)}
.section-title{text-align:center;margin-bottom:56px}
.section-title h2{position:relative;display:inline-block}
.section-title h2::after{content:'';display:block;width:60px;height:4px;background:var(--gradient-main);border-radius:4px;margin:16px auto 0}
.section-title p{max-width:620px;margin:16px auto 0;font-size:1.1rem;color:var(--text-weak)}
/* ===== Header Top Bar ===== */
.header-top{background:var(--primary-dark);color:var(--text-inverse);font-size:0.85rem;height:var(--header-top-height);display:flex;align-items:center}
.header-top .container{display:flex;justify-content:space-between;align-items:center}
.header-top a{color:var(--accent-light);margin-left:16px;font-weight:500}
.header-top a:hover{color:#fff}
.header-top .top-left span{margin-right:20px}
.header-top .top-left i{margin-right:6px;color:var(--accent)}
/* ===== Main Navigation ===== */
.main-header{background:#fff;border-bottom:1px solid var(--border-light);position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm);height:var(--nav-height);display:flex;align-items:center}
.main-header .container{display:flex;justify-content:space-between;align-items:center}
.logo{font-size:1.6rem;font-weight:800;color:var(--primary);display:flex;align-items:center;gap:10px;letter-spacing:-0.03em}
.logo i{color:var(--accent);font-size:1.8rem}
.logo .accent{color:var(--secondary);font-weight:700}
.nav-list{display:flex;align-items:center;gap:8px}
.nav-list a{padding:8px 18px;border-radius:var(--radius-sm);font-weight:500;color:var(--text-secondary);font-size:0.95rem;position:relative;transition:var(--transition);white-space:nowrap}
.nav-list a:hover{color:var(--primary);background:rgba(26,42,108,0.05)}
.nav-list a.active{color:var(--primary);background:rgba(26,42,108,0.08);font-weight:600}
.nav-list a.active::after{content:'';position:absolute;bottom:0;left:18px;right:18px;height:3px;background:var(--gradient-main);border-radius:3px 3px 0 0}
.nav-list a.nav-cta{background:var(--gradient-main);color:#fff;padding:8px 24px;border-radius:var(--radius-xl);font-weight:600;box-shadow:0 4px 14px rgba(26,42,108,0.25)}
.nav-list a.nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(26,42,108,0.35);color:#fff}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{width:26px;height:3px;background:var(--primary);border-radius:3px;transition:var(--transition)}
/* ===== Banner / Hero (分类页内页Banner) ===== */
.page-banner{background:var(--gradient-main);padding:80px 0 64px;position:relative;overflow:hidden}
.page-banner::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:0.15;mix-blend-mode:overlay}
.page-banner .container{position:relative;z-index:2}
.page-banner h1{color:#fff;font-size:2.8rem;margin-bottom:16px;text-shadow:0 2px 20px rgba(0,0,0,0.2)}
.page-banner p{color:rgba(255,255,255,0.85);font-size:1.15rem;max-width:680px;margin-bottom:0}
.page-banner .breadcrumb{display:flex;gap:8px;font-size:0.9rem;color:rgba(255,255,255,0.7);margin-bottom:20px;flex-wrap:wrap}
.page-banner .breadcrumb a{color:var(--accent-light)}
.page-banner .breadcrumb a:hover{color:#fff}
.page-banner .breadcrumb span{color:rgba(255,255,255,0.9)}
/* ===== Cards ===== */
.card{background:var(--gradient-card);border:1px solid var(--border-card);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-card);transition:var(--transition);height:100%}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-card-hover);border-color:var(--accent)}
.card-img{width:100%;height:200px;object-fit:cover;display:block}
.card-body{padding:24px}
.card-body h3{font-size:1.15rem;margin-bottom:10px;color:var(--primary)}
.card-body p{font-size:0.95rem;color:var(--text-secondary);margin-bottom:16px;line-height:1.6}
.card-meta{font-size:0.85rem;color:var(--text-weak);display:flex;gap:16px;align-items:center}
.card-meta i{margin-right:4px;color:var(--accent)}
.card-tag{display:inline-block;padding:4px 14px;border-radius:var(--radius-xl);font-size:0.8rem;font-weight:600;background:rgba(184,134,11,0.12);color:var(--secondary);margin-bottom:12px}
/* ===== Grid ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 32px;border-radius:var(--radius-xl);font-weight:600;font-size:1rem;border:none;cursor:pointer;transition:var(--transition);text-decoration:none}
.btn-primary{background:var(--gradient-main);color:#fff;box-shadow:0 4px 16px rgba(26,42,108,0.25)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 10px 32px rgba(26,42,108,0.35);color:#fff}
.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:var(--primary-dark);box-shadow:0 4px 16px rgba(184,134,11,0.3)}
.btn-accent:hover{transform:translateY(-3px);box-shadow:0 10px 32px rgba(184,134,11,0.4);color:var(--primary-dark)}
.btn-sm{padding:8px 20px;font-size:0.9rem}
/* ===== Badge / Tag ===== */
.badge{display:inline-block;padding:4px 14px;border-radius:var(--radius-xl);font-size:0.8rem;font-weight:600}
.badge-primary{background:rgba(26,42,108,0.1);color:var(--primary)}
.badge-accent{background:rgba(184,134,11,0.15);color:var(--secondary)}
.badge-green{background:rgba(34,139,34,0.1);color:#228b22}
/* ===== Stats / Data ===== */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-item{padding:28px 16px;background:rgba(255,255,255,0.06);border-radius:var(--radius-md);border:1px solid rgba(255,255,255,0.1)}
.stat-num{font-size:2.6rem;font-weight:800;color:var(--accent);line-height:1.2}
.stat-label{font-size:0.95rem;color:rgba(255,255,255,0.75);margin-top:6px}
/* ===== Quick Links / Icon Grid ===== */
.icon-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:20px}
.icon-card{background:#fff;border:1px solid var(--border-light);border-radius:var(--radius-md);padding:28px 16px;text-align:center;transition:var(--transition);cursor:default}
.icon-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--accent)}
.icon-card i{font-size:2.2rem;color:var(--primary);margin-bottom:12px;display:block}
.icon-card h4{font-size:1rem;margin-bottom:4px}
.icon-card p{font-size:0.85rem;color:var(--text-weak);margin:0}
/* ===== FAQ ===== */
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--border-light);border-radius:var(--radius-md);overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:var(--accent);box-shadow:var(--shadow-sm)}
.faq-q{width:100%;text-align:left;padding:18px 24px;background:none;border:none;font-size:1.05rem;font-weight:600;color:var(--text-primary);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-q i{color:var(--accent);font-size:1.2rem;transition:var(--transition)}
.faq-q[aria-expanded="true"] i{transform:rotate(180deg)}
.faq-a{padding:0 24px 18px;font-size:0.95rem;color:var(--text-secondary);line-height:1.7;display:none}
.faq-a.show{display:block}
/* ===== CTA Section ===== */
.cta-section{background:var(--gradient-main);padding:72px 0;text-align:center;position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:0.08;mix-blend-mode:overlay}
.cta-section .container{position:relative;z-index:2}
.cta-section h2{color:#fff;font-size:2.4rem;margin-bottom:16px}
.cta-section p{color:rgba(255,255,255,0.85);max-width:600px;margin:0 auto 32px;font-size:1.1rem}
.cta-section .btn{background:#fff;color:var(--primary);box-shadow:0 6px 24px rgba(0,0,0,0.2)}
.cta-section .btn:hover{transform:translateY(-3px);box-shadow:0 12px 40px rgba(0,0,0,0.3);color:var(--primary)}
.cta-section .btn-outline-light{background:transparent;color:#fff;border:2px solid rgba(255,255,255,0.6);margin-left:12px}
.cta-section .btn-outline-light:hover{background:rgba(255,255,255,0.12);border-color:#fff;color:#fff}
/* ===== Footer ===== */
.footer{background:var(--primary-dark);color:var(--text-inverse);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.08)}
.footer-brand .logo{color:#fff;font-size:1.5rem;margin-bottom:16px}
.footer-brand p{color:rgba(255,255,255,0.65);font-size:0.9rem;margin-bottom:0;line-height:1.7}
.footer-col h5{color:#fff;font-size:1rem;font-weight:600;margin-bottom:16px;letter-spacing:0.02em}
.footer-col a{display:block;color:rgba(255,255,255,0.6);font-size:0.9rem;padding:4px 0;transition:var(--transition)}
.footer-col a:hover{color:var(--accent);padding-left:4px}
.footer-bottom{padding:24px 0;text-align:center;font-size:0.85rem;color:rgba(255,255,255,0.45)}
/* ===== 分类页特色：内容列表（图文混合） ===== */
.featured-list{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.featured-card{display:flex;background:#fff;border:1px solid var(--border-light);border-radius:var(--radius-md);overflow:hidden;transition:var(--transition);box-shadow:var(--shadow-sm)}
.featured-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--accent)}
.featured-card .fc-img{width:220px;min-height:180px;object-fit:cover;flex-shrink:0}
.featured-card .fc-body{padding:20px 24px;display:flex;flex-direction:column;justify-content:center}
.featured-card .fc-body h3{font-size:1.1rem;margin-bottom:8px;color:var(--primary)}
.featured-card .fc-body p{font-size:0.9rem;color:var(--text-secondary);margin-bottom:12px;line-height:1.6}
.featured-card .fc-meta{font-size:0.82rem;color:var(--text-weak);display:flex;gap:16px}
.featured-card .fc-meta i{margin-right:4px;color:var(--accent)}
/* ===== 知识路径 / 步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.step-item{background:#fff;border:1px solid var(--border-light);border-radius:var(--radius-md);padding:32px 24px;text-align:center;position:relative;transition:var(--transition)}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--accent)}
.step-item::before{counter-increment:step;content:"0" counter(step);position:absolute;top:16px;right:20px;font-size:2.8rem;font-weight:800;color:rgba(26,42,108,0.06);line-height:1}
.step-icon{width:60px;height:60px;border-radius:50%;background:rgba(184,134,11,0.1);display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.step-icon i{font-size:1.6rem;color:var(--accent)}
.step-item h4{font-size:1.05rem;margin-bottom:8px;color:var(--primary)}
.step-item p{font-size:0.9rem;color:var(--text-secondary);margin:0;line-height:1.6}
/* ===== 标签云 ===== */
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;padding:16px 0}
.tag-cloud a{display:inline-block;padding:8px 22px;border-radius:var(--radius-xl);background:#fff;border:1px solid var(--border-light);font-size:0.9rem;color:var(--text-secondary);transition:var(--transition);font-weight:500}
.tag-cloud a:hover{background:var(--primary);color:#fff;border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
/* ===== 响应式 ===== */
@media(max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .icon-grid{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .featured-list{grid-template-columns:1fr}
  .featured-card .fc-img{width:180px;min-height:150px}
}
@media(max-width:768px){
  .header-top .top-right{display:none}
  .nav-list{display:none;flex-direction:column;position:absolute;top:var(--nav-height);left:0;right:0;background:#fff;border-bottom:2px solid var(--border-light);padding:16px 24px;box-shadow:var(--shadow-md);gap:4px}
  .nav-list.open{display:flex}
  .nav-list a{padding:12px 16px;border-radius:var(--radius-sm);width:100%;text-align:left}
  .nav-list a.active::after{display:none}
  .nav-list a.nav-cta{text-align:center}
  .nav-toggle{display:flex}
  h1{font-size:2rem}
  h2{font-size:1.8rem}
  .page-banner h1{font-size:2rem}
  .grid-3{grid-template-columns:1fr 1fr;gap:20px}
  .grid-2{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .featured-card{flex-direction:column}
  .featured-card .fc-img{width:100%;height:180px}
  .section{padding:56px 0}
  .icon-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .page-banner{padding:56px 0 40px}
  .container{padding:0 16px}
}
@media(max-width:520px){
  .grid-3{grid-template-columns:1fr}
  .grid-4{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr 1fr;gap:12px}
  .stat-num{font-size:2rem}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .icon-grid{grid-template-columns:1fr 1fr}
  .header-top .top-left span{font-size:0.75rem;margin-right:10px}
  .logo{font-size:1.3rem}
  .logo i{font-size:1.4rem}
  .page-banner h1{font-size:1.7rem}
  h2{font-size:1.5rem}
  .section-title{margin-bottom:36px}
  .faq-q{padding:14px 16px;font-size:0.95rem}
  .faq-a{padding:0 16px 14px;font-size:0.9rem}
}

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a9e;
            --primary-dark: #0f1b4a;
            --accent: #f5a623;
            --accent-light: #ffc655;
            --accent-dark: #d4891a;
            --bg: #f8f9fc;
            --bg-alt: #eef1f8;
            --bg-dark: #0f1b4a;
            --text: #1a1a2e;
            --text-light: #5a6a8a;
            --text-white: #ffffff;
            --border: #dce1ed;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(26, 42, 108, 0.08);
            --shadow-hover: 0 12px 40px rgba(26, 42, 108, 0.18);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            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);
            transition: var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }
        .logo {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.5px;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.4rem;
        }
        .logo .accent {
            color: var(--accent);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: var(--primary);
            background: var(--bg-alt);
        }
        .nav-list a.active {
            color: var(--primary);
            background: var(--bg-alt);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--accent);
        }
        .nav-list a.nav-cta {
            background: var(--accent);
            color: #fff;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(245, 166, 35, 0.3);
        }
        .nav-list a.nav-cta:hover {
            background: var(--accent-dark);
            box-shadow: 0 6px 20px rgba(245, 166, 35, 0.4);
            transform: translateY(-2px);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            margin-top: var(--nav-height);
            padding: 80px 0 60px;
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
            color: var(--text-white);
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 27, 74, 0.85) 0%, rgba(26, 42, 108, 0.7) 100%);
        }
        .article-banner .container {
            position: relative;
            z-index: 1;
        }
        .article-banner .breadcrumb {
            font-size: 0.9rem;
            opacity: 0.8;
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-banner .breadcrumb a {
            color: var(--text-white);
            opacity: 0.8;
        }
        .article-banner .breadcrumb a:hover {
            opacity: 1;
        }
        .article-banner .breadcrumb span {
            opacity: 0.5;
        }
        .article-banner h1 {
            font-size: 2.4rem;
            font-weight: 700;
            line-height: 1.3;
            max-width: 860px;
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.95rem;
            opacity: 0.85;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            color: var(--accent);
        }
        .article-meta .category-tag {
            background: var(--accent);
            color: #fff;
            padding: 2px 14px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        /* ===== 文章正文 ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-body {
            background: #fff;
            border-radius: var(--radius);
            padding: 40px 44px;
            box-shadow: var(--shadow);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text);
        }
        .article-body .content p {
            margin-bottom: 1.6em;
        }
        .article-body .content h2,
        .article-body .content h3 {
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            font-weight: 700;
            color: var(--primary);
        }
        .article-body .content h2 {
            font-size: 1.6rem;
        }
        .article-body .content h3 {
            font-size: 1.25rem;
        }
        .article-body .content ul,
        .article-body .content ol {
            margin-bottom: 1.6em;
            padding-left: 24px;
        }
        .article-body .content ul li {
            list-style: disc;
            margin-bottom: 6px;
        }
        .article-body .content ol li {
            list-style: decimal;
            margin-bottom: 6px;
        }
        .article-body .content img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--accent);
            background: var(--bg-alt);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body .content a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body .content a:hover {
            color: var(--accent);
        }
        .article-body .content code {
            background: var(--bg-alt);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--primary);
        }
        .article-body .content pre {
            background: var(--bg-dark);
            color: #e4e8f0;
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: 24px 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i {
            color: var(--accent);
        }
        .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            color: var(--text-light);
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .sidebar-card ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .sidebar-card ul li a i {
            color: var(--accent);
            font-size: 0.75rem;
        }
        .sidebar-cta {
            background: var(--primary);
            color: var(--text-white);
            padding: 32px 24px;
            text-align: center;
            border-radius: var(--radius);
            box-shadow: 0 8px 30px rgba(26, 42, 108, 0.2);
        }
        .sidebar-cta h4 {
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 12px;
        }
        .sidebar-cta p {
            opacity: 0.85;
            font-size: 0.95rem;
            margin-bottom: 20px;
        }
        .sidebar-cta .btn {
            background: var(--accent);
            color: #fff;
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 600;
            display: inline-block;
            transition: var(--transition);
        }
        .sidebar-cta .btn:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245, 166, 35, 0.3);
        }

        /* ===== 文章未找到 ===== */
        .not-found-wrap {
            text-align: center;
            padding: 80px 24px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .not-found-wrap i {
            font-size: 3.6rem;
            color: var(--accent);
            margin-bottom: 20px;
        }
        .not-found-wrap h2 {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .not-found-wrap p {
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .not-found-wrap .btn {
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            display: inline-block;
        }
        .not-found-wrap .btn:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }

        /* ===== 相关文章 ===== */
        .related-section {
            margin-top: 48px;
            padding-top: 40px;
            border-top: 1px solid var(--border);
        }
        .related-section h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-section h3 i {
            color: var(--accent);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            padding: 20px;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .related-card:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            background: #fff;
        }
        .related-card .rc-cat {
            font-size: 0.8rem;
            color: var(--accent);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .related-card h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card p {
            font-size: 0.9rem;
            color: var(--text-light);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 64px 0 32px;
        }
        .footer .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.5rem;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.7;
            opacity: 0.75;
            max-width: 360px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.92rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            opacity: 0.6;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-list {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list a {
                width: 100%;
                padding: 12px 16px;
            }
            .nav-list a.active::after {
                display: none;
            }
            .nav-list a.nav-cta {
                text-align: center;
                margin-top: 8px;
            }
            .nav-toggle {
                display: block;
            }
            .article-banner h1 {
                font-size: 1.6rem;
            }
            .article-banner {
                padding: 60px 0 40px;
            }
            .article-body {
                padding: 24px 20px;
            }
            .article-body .content {
                font-size: 1rem;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo {
                font-size: 1.3rem;
            }
            .article-banner h1 {
                font-size: 1.3rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 8px;
            }
            .article-body {
                padding: 18px 16px;
            }
            .sidebar-card {
                padding: 20px 16px;
            }
        }