/* roulang page: index */
:root {
            --primary: #0d1b33;
            --primary-soft: #152a4d;
            --primary-muted: #1e3a5f;
            --accent: #f59e0b;
            --accent-hover: #e08900;
            --accent-light: #fbbf24;
            --bg: #ffffff;
            --bg-light: #f6f8fc;
            --bg-dark: #0b1526;
            --text: #1e293b;
            --text-muted: #5b6b83;
            --text-light: #8a98ab;
            --border: #e4e9f0;
            --radius-lg: 24px;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 10px rgba(13, 27, 51, 0.05);
            --shadow: 0 8px 30px rgba(13, 27, 51, 0.08);
            --shadow-lg: 0 20px 60px rgba(13, 27, 51, 0.14);
            --tt: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --header-h: 76px;
            --container: 1200px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
            border: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--tt);
        }
        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
        }
        section[id] {
            scroll-margin-top: calc(var(--header-h) + 10px);
        }
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section {
            padding: 90px 0;
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }
        .section-tag {
            display: inline-block;
            background: rgba(245, 158, 11, 0.12);
            color: var(--accent-hover);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.05em;
            padding: 6px 18px;
            border-radius: 999px;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 34px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.7;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.2;
            border: 2px solid transparent;
            transition: var(--tt);
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-lg {
            padding: 16px 42px;
            font-size: 17px;
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-soft);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(13, 27, 51, 0.25);
        }
        .btn-accent {
            background: linear-gradient(135deg, #f59e0b, #f97316);
            color: #fff;
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
        }
        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(245, 158, 11, 0.45);
        }
        .btn-ghost {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }
        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(13, 27, 51, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--tt);
        }
        .site-header.scrolled {
            background: rgba(8, 18, 36, 0.95);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 20px;
        }
        .brand {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
        }
        .brand .brand-dot {
            color: var(--accent);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            color: rgba(255, 255, 255, 0.78);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 999px;
            transition: var(--tt);
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-link.active {
            color: #fff;
            background: rgba(255, 255, 255, 0.14);
            font-weight: 600;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--tt);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Hero */
        .hero {
            position: relative;
            padding: 170px 0 110px;
            background:
                linear-gradient(135deg, rgba(10, 20, 40, 0.92) 0%, rgba(13, 27, 51, 0.78) 50%, rgba(30, 58, 95, 0.65) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: -100px;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.18), transparent 70%);
            pointer-events: none;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 760px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.18);
            padding: 8px 20px;
            border-radius: 999px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
        }
        .hero h1 {
            font-size: 62px;
            font-weight: 900;
            line-height: 1.1;
            letter-spacing: -0.03em;
            margin-bottom: 16px;
        }
        .hero h1 .accent {
            color: var(--accent);
        }
        .hero-sub {
            font-size: 18px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.82);
            max-width: 620px;
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 56px;
        }
        .hero-stats {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: left;
        }
        .hero-stat strong {
            display: block;
            font-size: 34px;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
        }
        .hero-stat strong span {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.6);
            font-weight: 500;
        }
        .hero-stat small {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }

        /* Features */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--tt);
            box-shadow: var(--shadow-sm);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .feature-img {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-light);
        }
        .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .feature-card:hover .feature-img img {
            transform: scale(1.05);
        }
        .feature-body {
            padding: 28px 26px 30px;
        }
        .feature-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .feature-body p {
            color: var(--text-muted);
            font-size: 14.5px;
            line-height: 1.75;
        }

        /* Stats */
        .stats-section {
            background: var(--bg-dark);
            background-image:
                radial-gradient(circle at 20% 50%, rgba(245, 158, 11, 0.08), transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.1), transparent 45%);
            padding: 70px 0;
            color: #fff;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            text-align: center;
        }
        .stat-item {
            padding: 20px 10px;
        }
        .stat-num {
            display: block;
            font-size: 42px;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
        }

        /* Channel */
        .channel-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .channel-img {
            height: 100%;
            min-height: 360px;
            overflow: hidden;
        }
        .channel-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .channel-body {
            padding: 48px 44px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .channel-body h3 {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 14px;
            line-height: 1.35;
        }
        .channel-body>p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .channel-points {
            list-style: none;
            margin-bottom: 30px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
        }
        .channel-points li {
            position: relative;
            padding-left: 24px;
            font-size: 14.5px;
            color: var(--text);
            line-height: 1.6;
        }
        .channel-points li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 0;
            color: var(--accent);
            font-weight: 700;
            font-size: 15px;
        }

        /* News */
        .news-section {
            background: var(--bg-light);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 18px;
            max-width: 860px;
            margin: 0 auto;
        }
        .news-card {
            display: block;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 26px 30px;
            transition: var(--tt);
            box-shadow: var(--shadow-sm);
        }
        .news-card:hover {
            transform: translateX(6px);
            box-shadow: var(--shadow);
            border-color: rgba(245, 158, 11, 0.3);
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 12px;
        }
        .news-meta .tag {
            background: rgba(245, 158, 11, 0.12);
            color: var(--accent-hover);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
        }
        .news-meta time {
            font-size: 13px;
            color: var(--text-light);
        }
        .news-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.45;
            transition: var(--tt);
        }
        .news-card:hover h3 {
            color: var(--accent-hover);
        }
        .news-card p {
            color: var(--text-muted);
            font-size: 14.5px;
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .read-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .news-card:hover .read-more {
            color: var(--accent-hover);
        }
        .empty-tip {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            background: var(--bg);
            border: 1px dashed var(--border);
            border-radius: var(--radius);
            color: var(--text-muted);
            font-size: 15px;
        }

        /* Process */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .process-step {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            text-align: center;
            position: relative;
            transition: var(--tt);
        }
        .process-step:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            border-radius: 50%;
            margin-bottom: 20px;
        }
        .process-step h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--tt);
        }
        .faq-item:hover {
            border-color: rgba(245, 158, 11, 0.3);
        }
        .faq-item summary {
            padding: 20px 28px;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--tt);
        }
        .faq-item summary::after {
            content: '+';
            font-size: 22px;
            font-weight: 400;
            color: var(--text-light);
            transition: var(--tt);
        }
        .faq-item[open] summary::after {
            content: '−';
            color: var(--accent);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item[open] summary {
            color: var(--accent-hover);
        }
        .faq-item p {
            padding: 0 28px 22px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            padding: 90px 0;
            background:
                linear-gradient(120deg, rgba(13, 27, 51, 0.92), rgba(13, 27, 51, 0.82)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
        }
        .cta-inner {
            max-width: 680px;
        }
        .cta-inner h2 {
            font-size: 36px;
            font-weight: 900;
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }
        .cta-inner p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 30px;
        }

        /* Footer */
        .site-footer {
            background: #081321;
            color: rgba(255, 255, 255, 0.7);
            padding-top: 60px;
        }
        .footer-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            padding-bottom: 40px;
            flex-wrap: wrap;
        }
        .footer-brand .brand {
            font-size: 20px;
            margin-bottom: 6px;
        }
        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-nav {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .footer-nav a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            padding: 6px 0;
            border-bottom: 1px solid transparent;
        }
        .footer-nav a:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero {
                padding: 150px 0 90px;
            }
            .hero h1 {
                font-size: 48px;
            }
            .features-grid {
                gap: 20px;
            }
            .channel-body {
                padding: 36px 32px;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }
            .section-head h2 {
                font-size: 28px;
            }
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(8, 18, 36, 0.98);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                display: none;
            }
            .main-nav.open {
                display: flex;
            }
            .nav-link,
            .nav-link.active {
                padding: 12px 16px;
                border-radius: 12px;
                color: rgba(255, 255, 255, 0.85);
            }
            .header-actions {
                display: none;
            }
            .hero h1 {
                font-size: 38px;
            }
            .hero-sub {
                font-size: 16px;
            }
            .hero-stats {
                gap: 28px;
            }
            .hero-stat strong {
                font-size: 28px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .channel-card {
                grid-template-columns: 1fr;
            }
            .channel-img {
                min-height: 220px;
            }
            .channel-body {
                padding: 28px 24px;
            }
            .channel-points {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-inner {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }
            .hero {
                padding: 130px 0 70px;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-stats {
                flex-direction: column;
                gap: 18px;
            }
            .hero-stat {
                display: flex;
                align-items: baseline;
                gap: 10px;
            }
            .hero-stat strong {
                font-size: 24px;
            }
            .hero-stat small {
                font-size: 12px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .stat-num {
                font-size: 32px;
            }
            .channel-body h3 {
                font-size: 22px;
            }
            .news-card {
                padding: 20px;
            }
            .news-card h3 {
                font-size: 17px;
            }
            .footer-nav {
                flex-direction: column;
                gap: 10px;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #0f1e3d;
  --primary-light: #1b2e55;
  --primary-dark: #080f1f;
  --accent: #f0a500;
  --accent-hover: #d49400;
  --accent-soft: rgba(240, 165, 0, 0.12);
  --bg: #f5f7fb;
  --bg-alt: #ffffff;
  --bg-dark: #0f1e3d;
  --text: #1a2333;
  --text-weak: #63718a;
  --text-light: #ffffff;
  --border: #e3e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 40px rgba(15, 30, 61, 0.08);
  --shadow-lg: 0 20px 60px rgba(15, 30, 61, 0.12);
  --transition: all 0.3s ease;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ===== 基础 reset/base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
}
input {
  font-family: inherit;
}
ul, ol {
  list-style: none;
}

/* ===== 容器 ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header 导航 ===== */
.site-header {
  background: rgba(15, 30, 61, 0.98);
  backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-light);
  letter-spacing: -0.5px;
  white-space: nowrap;
}
.brand-dot {
  color: var(--accent);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  color: rgba(255, 255, 255, 0.75);
  font-weight: 500;
  font-size: 15px;
  padding: 8px 16px;
  border-radius: 8px;
  transition: var(--transition);
  position: relative;
}
.nav-link:hover {
  color: var(--text-light);
  background: rgba(255, 255, 255, 0.08);
}
.nav-link.active {
  color: var(--text-light);
  background: var(--accent-soft);
}
.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--accent);
  border-radius: 3px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  padding: 10px;
  border-radius: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text-light);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: var(--text-light);
}
.btn-primary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(15, 30, 61, 0.25);
}
.btn-accent {
  background: var(--accent);
  color: var(--primary-dark);
}
.btn-accent:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(240, 165, 0, 0.3);
}
.btn-outline {
  border: 2px solid var(--border);
  color: var(--text);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(15, 30, 61, 0.04);
}
.btn-lg {
  padding: 16px 40px;
  font-size: 17px;
}
.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
}

/* ===== Hero/Banner ===== */
.category-banner {
  position: relative;
  padding: 120px 0 100px;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, #2a4a8a 100%);
  overflow: hidden;
}
.category-banner::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -100px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: rgba(240, 165, 0, 0.1);
  filter: blur(80px);
}
.category-banner::after {
  content: "";
  position: absolute;
  bottom: -50px;
  left: -50px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(240, 165, 0, 0.08);
  filter: blur(60px);
}
.banner-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
}
.banner-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}
.banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-soft);
  border: 1px solid rgba(240, 165, 0, 0.3);
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 20px;
}
.banner-tag i {
  font-style: normal;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}
.banner-content h1 {
  font-size: 48px;
  line-height: 1.2;
  color: var(--text-light);
  margin-bottom: 20px;
  letter-spacing: -1px;
  font-weight: 800;
}
.banner-content p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 32px;
  line-height: 1.8;
  max-width: 620px;
}
.banner-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.banner-meta {
  display: flex;
  gap: 32px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.banner-meta-item {
  display: flex;
  align-items: center;
  gap: 12px;
}
.banner-meta-item .num {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
}
.banner-meta-item .label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

/* ===== Section 通用 ===== */
.section {
  padding: 90px 0;
}
.section-alt {
  background: var(--bg-alt);
}
.section-head {
  text-align: center;
  max-width: 660px;
  margin: 0 auto 56px;
}
.section-head .section-eyebrow {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 16px;
}
.section-head h2 {
  font-size: 36px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: -0.5px;
  margin-bottom: 14px;
}
.section-head p {
  font-size: 16px;
  color: var(--text-weak);
  line-height: 1.8;
}

/* ===== 分类卡片 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.feature-card:hover::before {
  opacity: 1;
}
.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--accent-soft);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
}

/* ===== 攻略卡片 ===== */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.guide-card {
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}
.guide-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.guide-card .guide-cover {
  position: relative;
  height: 220px;
  overflow: hidden;
}
.guide-card .guide-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.guide-card:hover .guide-cover img {
  transform: scale(1.05);
}
.guide-card .guide-body {
  padding: 24px;
}
.guide-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}
.tag {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 50px;
}
.tag-dark {
  background: var(--primary);
  color: var(--text-light);
}
.guide-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.4;
}
.guide-card .guide-excerpt {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  margin-bottom: 16px;
}
.guide-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.guide-link:hover {
  color: var(--accent);
  gap: 10px;
}

/* ===== 数据面板 ===== */
.stats-section {
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(240, 165, 0, 0.15), transparent);
  border-radius: 50%;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  position: relative;
  z-index: 2;
}
.stat-item {
  text-align: center;
  padding: 36px 20px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: var(--transition);
}
.stat-item:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-4px);
}
.stat-item .stat-num {
  font-size: 44px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  margin-bottom: 8px;
}
.stat-item .stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

/* ===== 流程步骤 ===== */
.steps-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  counter-reset: step;
}
.step-item {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 32px 24px;
  border: 1px solid var(--border);
  position: relative;
  transition: var(--transition);
}
.step-item:hover {
  box-shadow: var(--shadow);
  border-color: var(--accent);
}
.step-item .step-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
  display: block;
}
.step-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}
.step-item p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
}

/* ===== 资讯列表 ===== */
.news-section {
  background: var(--bg-alt);
}
.news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.news-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.news-item:last-child {
  border-bottom: none;
}
.news-item:hover {
  padding-left: 12px;
}
.news-item .news-date {
  font-size: 14px;
  color: var(--text-weak);
  min-width: 72px;
  font-weight: 500;
}
.news-item .news-title {
  flex: 1;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  transition: var(--transition);
}
.news-item:hover .news-title {
  color: var(--accent);
}
.news-item .news-tag {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 50px;
  white-space: nowrap;
}
.news-cover {
  width: 100px;
  height: 70px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: rgba(240, 165, 0, 0.4);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: var(--transition);
}
.faq-question::after {
  content: "+";
  font-size: 24px;
  font-weight: 400;
  color: var(--accent);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner {
  padding: 0 28px 22px;
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(240, 165, 0, 0.15);
  filter: blur(40px);
}
.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}
.cta-content h2 {
  font-size: 38px;
  font-weight: 800;
  color: var(--text-light);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.cta-content p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 32px;
  line-height: 1.8;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.7);
  padding-top: 70px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand {
  max-width: 280px;
}
.footer-brand .brand {
  color: var(--text-light);
  font-size: 26px;
}
.footer-brand p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 12px;
  line-height: 1.7;
}
.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-nav a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  transition: var(--transition);
}
.footer-nav a:hover {
  color: var(--accent);
}
.footer-bottom {
  padding: 24px 0;
  text-align: center;
}
.footer-bottom p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 20px 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-weak);
}
.breadcrumb a {
  color: var(--text-weak);
  transition: var(--transition);
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb .sep {
  color: var(--border);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .feature-grid,
  .guide-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-wrap {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .banner-content h1 {
    font-size: 40px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--primary-dark);
    flex-direction: column;
    padding: 20px;
    gap: 8px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .main-nav .nav-link {
    width: 100%;
    text-align: center;
    padding: 14px;
    font-size: 16px;
  }
  .nav-toggle {
    display: flex;
  }
  .header-actions .btn-sm {
    display: none;
  }
  .category-banner {
    padding: 80px 0 60px;
  }
  .banner-content h1 {
    font-size: 32px;
  }
  .banner-content p {
    font-size: 16px;
  }
  .banner-meta {
    flex-direction: column;
    gap: 16px;
  }
  .section {
    padding: 60px 0;
  }
  .section-head h2 {
    font-size: 28px;
  }
  .footer-inner {
    flex-direction: column;
    gap: 28px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .feature-grid,
  .guide-grid,
  .steps-wrap,
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .banner-content h1 {
    font-size: 26px;
  }
  .banner-actions .btn {
    width: 100%;
  }
  .news-item {
    flex-wrap: wrap;
    gap: 12px;
    padding: 20px 0;
  }
  .news-item .news-title {
    flex-basis: 100%;
    order: 3;
  }
  .news-item .news-date {
    font-size: 13px;
  }
  .news-cover {
    width: 80px;
    height: 56px;
  }
  .cta-content h2 {
    font-size: 28px;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .faq-question {
    padding: 18px 20px;
    font-size: 14px;
  }
  .faq-answer-inner {
    padding: 0 20px 18px;
  }
}

/* ===== 焦点状态 ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(240, 165, 0, 0.5);
  outline-offset: 2px;
}

/* roulang page: article */
:root {
            --primary: #0a1628;
            --primary-light: #152436;
            --primary-lighter: #1e3048;
            --accent: #c9a96a;
            --accent-hover: #b89554;
            --accent-soft: rgba(201, 169, 106, 0.12);
            --text: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --bg: #f1f5f9;
            --bg-card: #ffffff;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-lg: 24px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(10, 22, 40, 0.06);
            --shadow-lg: 0 12px 48px rgba(10, 22, 40, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
        }

        *, *::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;
        }

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

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            background: var(--primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .brand {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: #fff;
            white-space: nowrap;
            display: flex;
            align-items: center;
        }

        .brand-dot {
            color: var(--accent);
            margin-left: 2px;
            font-size: 26px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            color: rgba(255, 255, 255, 0.75);
            padding: 8px 18px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.02em;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link.active {
            color: #fff;
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            border: 2px solid transparent;
            line-height: 1.2;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(201, 169, 106, 0.4);
            outline-offset: 2px;
        }

        .btn-accent {
            background: var(--accent);
            color: #0a1628;
        }

        .btn-accent:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201, 169, 106, 0.35);
        }

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

        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
            border-radius: 8px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-lighter);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(10, 22, 40, 0.3);
        }

        .btn-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.3);
            color: #fff;
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            cursor: pointer;
            background: transparent;
        }

        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            background:
                linear-gradient(140deg, rgba(10, 22, 40, 0.92) 0%, rgba(15, 30, 52, 0.88) 50%, rgba(10, 22, 40, 0.96) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 88px 0 96px;
            position: relative;
            overflow: hidden;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(201, 169, 106, 0.3), transparent);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.6);
        }

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

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

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

        .article-title {
            font-size: clamp(28px, 4vw, 44px);
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 20px;
            max-width: 760px;
            letter-spacing: -0.01em;
        }

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

        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        .badge-accent {
            background: var(--accent);
            color: #0a1628;
        }

        .badge-soft {
            background: rgba(255, 255, 255, 0.12);
            color: rgba(255, 255, 255, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
        }

        .meta-icon {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
        }

        /* ===== Article Main ===== */
        .article-main {
            margin-top: -48px;
            position: relative;
            z-index: 2;
            padding-bottom: 64px;
        }

        .article-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
        }

        .article-cover {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .article-content {
            padding: 48px 56px;
        }

        .article-content > * + * {
            margin-top: 1.5em;
        }

        .article-content h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.4;
            margin-top: 2em;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border);
        }

        .article-content h3 {
            font-size: 21px;
            font-weight: 600;
            color: var(--primary);
            margin-top: 1.8em;
            line-height: 1.5;
        }

        .article-content h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-top: 1.5em;
        }

        .article-content p {
            color: #334155;
            line-height: 1.9;
            font-size: 16px;
        }

        .article-content ul,
        .article-content ol {
            padding-left: 24px;
            color: #334155;
            line-height: 1.9;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: var(--accent-soft);
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: var(--primary);
            margin: 2em 0;
            font-size: 17px;
        }

        .article-content img {
            border-radius: var(--radius);
            margin: 2em 0;
        }

        .article-content a:not(.btn) {
            color: var(--accent-hover);
            border-bottom: 1px solid rgba(201, 169, 106, 0.4);
        }

        .article-content a:not(.btn):hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        .article-content code {
            background: rgba(10, 22, 40, 0.06);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 14px;
            font-family: 'SF Mono', Consolas, monospace;
        }

        /* ===== Empty State ===== */
        .empty-state {
            text-align: center;
            padding: 80px 40px;
        }

        .empty-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(201, 169, 106, 0.1);
            color: var(--accent);
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 24px;
        }

        .empty-state h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .empty-state p {
            color: var(--text-muted);
            margin-bottom: 32px;
        }

        /* ===== Tags ===== */
        .tags-section {
            padding: 40px 0 24px;
        }

        .tags-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .tags-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 600;
            letter-spacing: 0.05em;
        }

        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            background: #fff;
            border: 1px solid var(--border);
            font-size: 13px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
        }

        .tag:hover {
            border-color: var(--accent);
            color: var(--accent-hover);
            background: var(--accent-soft);
            transform: translateY(-1px);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 64px 0;
        }

        .cta-card {
            background:
                linear-gradient(135deg, rgba(10, 22, 40, 0.95), rgba(20, 38, 64, 0.92)),
                url('/assets/images/backpic/back-2.png') center/cover;
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            border: 2px solid rgba(201, 169, 106, 0.2);
        }

        .cta-card::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(201, 169, 106, 0.08);
        }

        .cta-card h2 {
            position: relative;
            z-index: 1;
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-card p {
            position: relative;
            z-index: 1;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 32px;
            font-size: 16px;
        }

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

        /* ===== FAQ ===== */
        .faq-section {
            padding: 64px 0;
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-tag {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent-hover);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

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

        .faq-item:hover {
            border-color: rgba(201, 169, 106, 0.4);
            box-shadow: 0 4px 16px rgba(10, 22, 40, 0.05);
        }

        .faq-item.open {
            border-color: rgba(201, 169, 106, 0.5);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            text-align: left;
            background: transparent;
            transition: var(--transition);
            gap: 16px;
        }

        .faq-question::after {
            content: '+';
            font-size: 24px;
            font-weight: 300;
            color: var(--accent);
            transition: var(--transition);
            flex-shrink: 0;
            line-height: 1;
        }

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

        .faq-item.open .faq-question::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .faq-answer-inner p + p {
            margin-top: 12px;
        }

        /* ===== Related ===== */
        .related-section {
            padding: 72px 0;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

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

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(201, 169, 106, 0.3);
        }

        .related-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .related-info {
            padding: 24px;
        }

        .related-info .badge {
            margin-bottom: 12px;
        }

        .related-info h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--primary);
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .related-info p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .related-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-hover);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .related-link:hover {
            gap: 8px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary);
            padding: 56px 0 24px;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-inner {
            display: flex;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand {
            max-width: 320px;
        }

        .footer-brand .brand {
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
        }

        .footer-nav {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            align-items: center;
        }

        .footer-nav a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
        }

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

        .footer-bottom {
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-content {
                padding: 40px;
            }

            .related-grid {
                gap: 20px;
            }

            .cta-card {
                padding: 48px 32px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--primary);
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 24px;
                gap: 4px;
                transform: translateY(-110%);
                transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                z-index: 99;
            }

            .main-nav.open {
                transform: translateY(0);
            }

            .main-nav .nav-link {
                width: 100%;
                padding: 12px 16px;
                font-size: 16px;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-toggle.active span:nth-child(1) {
                transform: translateY(7px) rotate(45deg);
            }

            .nav-toggle.active span:nth-child(2) {
                opacity: 0;
            }

            .nav-toggle.active span:nth-child(3) {
                transform: translateY(-7px) rotate(-45deg);
            }

            .header-actions {
                display: none;
            }

            .article-hero {
                padding: 64px 0 72px;
            }

            .article-title {
                font-size: 28px;
            }

            .article-cover {
                height: 260px;
            }

            .article-content {
                padding: 28px 24px;
            }

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

            .cta-card h2 {
                font-size: 24px;
            }

            .footer-inner {
                flex-direction: column;
                gap: 24px;
            }

            .section-head h2 {
                font-size: 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .article-hero {
                padding: 48px 0 56px;
            }

            .article-title {
                font-size: 24px;
                line-height: 1.35;
            }

            .article-meta {
                gap: 10px;
            }

            .article-main {
                margin-top: -24px;
            }

            .article-cover {
                height: 200px;
            }

            .article-content {
                padding: 24px 18px;
            }

            .cta-card {
                padding: 36px 24px;
                border-radius: var(--radius);
            }

            .cta-card h2 {
                font-size: 20px;
            }

            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }

            .footer-inner {
                padding-bottom: 28px;
            }
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .article-hero .container {
            animation: fadeUp 0.5s ease-out;
        }