/* roulang page: index */
:root {
  --primary: #0f0b1a;
  --primary-light: #1a1535;
  --primary-mid: #2a1f4e;
  --accent: #c9a84c;
  --accent-light: #e8c96a;
  --accent-dark: #a88a2e;
  --energy: #ff7a3d;
  --energy-light: #ff9a6a;
  --bg: #0a0812;
  --bg-card: rgba(26, 21, 53, 0.85);
  --bg-card-hover: rgba(42, 31, 78, 0.95);
  --text: #f0ece4;
  --text-soft: #c8c0b4;
  --text-muted: #8a8278;
  --border: rgba(201, 168, 76, 0.2);
  --border-hover: rgba(201, 168, 76, 0.5);
  --radius: 12px;
  --radius-lg: 20px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 30px rgba(201, 168, 76, 0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, system-ui, sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.7; font-size: 16px; }
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-light); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; position: relative; }
.section-dark { background: var(--primary); }
.section-glow { position: relative; }
.section-glow::before { content: ''; position: absolute; top: -60px; left: 50%; transform: translateX(-50%); width: 600px; height: 200px; background: radial-gradient(ellipse, rgba(201,168,76,0.06) 0%, transparent 70%); pointer-events: none; }
.section-title { font-size: 2.4rem; font-weight: 800; line-height: 1.2; margin-bottom: 16px; letter-spacing: -0.02em; }
.section-title .highlight { background: linear-gradient(135deg, var(--accent), var(--energy)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.section-subtitle { font-size: 1.1rem; color: var(--text-soft); max-width: 680px; margin-bottom: 48px; line-height: 1.6; }
.text-center { text-align: center; }
.text-center .section-subtitle { margin-left: auto; margin-right: auto; }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 32px; border-radius: 50px; font-weight: 700; font-size: 0.95rem; transition: var(--transition); border: none; cursor: pointer; letter-spacing: 0.01em; }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: var(--primary); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(201, 168, 76, 0.35); color: var(--primary); }
.btn-outline { background: transparent; border: 2px solid var(--accent); color: var(--accent); }
.btn-outline:hover { background: var(--accent); color: var(--primary); transform: translateY(-2px); }
.btn-energy { background: linear-gradient(135deg, var(--energy), #e0552a); color: #fff; }
.btn-energy:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(255, 122, 61, 0.4); color: #fff; }
.btn-lg { padding: 18px 48px; font-size: 1.1rem; }
.badge { display: inline-block; padding: 4px 14px; border-radius: 50px; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }
.badge-accent { background: rgba(201, 168, 76, 0.15); color: var(--accent); border: 1px solid rgba(201, 168, 76, 0.3); }
.badge-energy { background: rgba(255, 122, 61, 0.15); color: var(--energy); border: 1px solid rgba(255, 122, 61, 0.3); }
.badge-new { background: rgba(201, 168, 76, 0.2); color: var(--accent-light); border: 1px solid var(--accent); animation: pulse-badge 2s infinite; }
@keyframes pulse-badge { 0%, 100% { opacity: 1; } 50% { opacity: 0.7; } }
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; transition: var(--transition); backdrop-filter: blur(12px); }
.card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-glow); transform: translateY(-4px); background: var(--bg-card-hover); }
.card-img { border-radius: var(--radius) var(--radius) 0 0; overflow: hidden; width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.card-body { padding: 20px 0 0; }
.card-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
.card-text { color: var(--text-soft); font-size: 0.9rem; line-height: 1.6; }
.card-tag { display: inline-flex; align-items: center; gap: 6px; font-size: 0.8rem; color: var(--text-muted); }
/* ===== HEADER / NAV ===== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(10, 8, 18, 0.92); backdrop-filter: blur(20px); border-bottom: 1px solid rgba(201, 168, 76, 0.1); height: var(--header-height); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.logo { font-size: 1.5rem; font-weight: 900; letter-spacing: -0.03em; background: linear-gradient(135deg, var(--accent), var(--energy)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; white-space: nowrap; }
.logo:hover { opacity: 0.9; }
.nav { display: flex; align-items: center; gap: 8px; }
.nav a { padding: 8px 20px; border-radius: 50px; font-size: 0.9rem; font-weight: 600; color: var(--text-soft); transition: var(--transition); position: relative; }
.nav a:hover { color: var(--accent); background: rgba(201, 168, 76, 0.08); }
.nav a.active { color: var(--accent); background: rgba(201, 168, 76, 0.12); }
.nav a.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--accent); border-radius: 2px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }
.nav-toggle span { display: block; width: 26px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }
/* ===== HERO ===== */
.hero { position: relative; min-height: 92vh; display: flex; align-items: center; padding-top: var(--header-height); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat; filter: brightness(0.35) saturate(1.2); z-index: 0; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(10,8,18,0.88) 0%, rgba(10,8,18,0.4) 50%, rgba(10,8,18,0.7) 100%); z-index: 1; }
.hero-glow { position: absolute; bottom: -120px; left: 50%; transform: translateX(-50%); width: 800px; height: 400px; background: radial-gradient(ellipse, rgba(201,168,76,0.12) 0%, transparent 70%); pointer-events: none; z-index: 1; }
.hero-content { position: relative; z-index: 2; max-width: 760px; padding: 80px 0; }
.hero-badge { margin-bottom: 20px; }
.hero-title { font-size: 3.8rem; font-weight: 900; line-height: 1.1; margin-bottom: 20px; letter-spacing: -0.03em; }
.hero-title .highlight { background: linear-gradient(135deg, var(--accent), var(--energy-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-desc { font-size: 1.2rem; color: var(--text-soft); max-width: 600px; margin-bottom: 36px; line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.hero-stats { display: flex; gap: 40px; margin-top: 48px; padding-top: 32px; border-top: 1px solid rgba(201, 168, 76, 0.15); }
.stat-item { text-align: center; }
.stat-number { font-size: 2rem; font-weight: 900; color: var(--accent); line-height: 1.2; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 4px; letter-spacing: 0.03em; }
/* ===== FEATURES / 核心能力 ===== */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { text-align: center; padding: 40px 28px; }
.feature-icon { width: 64px; height: 64px; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 1.8rem; background: rgba(201, 168, 76, 0.1); color: var(--accent); border: 1px solid rgba(201, 168, 76, 0.15); }
.feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; }
.feature-card p { color: var(--text-soft); font-size: 0.9rem; line-height: 1.7; }
/* ===== CATEGORY ENTRY / 分类入口 ===== */
.category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.category-card { display: flex; flex-direction: column; border-radius: var(--radius-lg); overflow: hidden; background: var(--bg-card); border: 1px solid var(--border); transition: var(--transition); }
.category-card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-glow); transform: translateY(-6px); }
.category-card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.category-card-body { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.category-card-body h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 10px; }
.category-card-body p { color: var(--text-soft); font-size: 0.9rem; line-height: 1.7; margin-bottom: 16px; flex: 1; }
.category-card-footer { display: flex; align-items: center; justify-content: space-between; padding-top: 16px; border-top: 1px solid rgba(201, 168, 76, 0.1); }
/* ===== LATEST POSTS / 最新资讯 ===== */
.posts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.post-card { padding: 24px; border-radius: var(--radius-lg); background: var(--bg-card); border: 1px solid var(--border); transition: var(--transition); }
.post-card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-glow); transform: translateY(-4px); }
.post-card .badge { margin-bottom: 12px; }
.post-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.post-card h3 a { color: var(--text); }
.post-card h3 a:hover { color: var(--accent); }
.post-excerpt { color: var(--text-soft); font-size: 0.85rem; line-height: 1.6; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-meta { display: flex; align-items: center; gap: 16px; font-size: 0.78rem; color: var(--text-muted); }
.post-meta i { margin-right: 4px; }
.empty-state { grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty-state i { font-size: 3rem; margin-bottom: 16px; opacity: 0.5; }
/* ===== PROCESS / 流程 ===== */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.process-step { text-align: center; padding: 36px 20px; position: relative; }
.process-step::before { counter-increment: step; content: '0' counter(step); position: absolute; top: 16px; right: 24px; font-size: 3rem; font-weight: 900; color: rgba(201, 168, 76, 0.08); line-height: 1; }
.process-icon { width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; font-size: 1.4rem; background: rgba(201, 168, 76, 0.1); color: var(--accent); border: 2px solid rgba(201, 168, 76, 0.2); }
.process-step h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.process-step p { color: var(--text-soft); font-size: 0.85rem; line-height: 1.6; }
.process-arrow { display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 1.5rem; opacity: 0.5; }
/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: var(--border-hover); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; font-size: 1rem; font-weight: 600; color: var(--text); text-align: left; background: none; border: none; cursor: pointer; transition: var(--transition); }
.faq-question:hover { color: var(--accent); }
.faq-question i { transition: var(--transition); color: var(--accent); font-size: 0.9rem; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease, padding 0.3s ease; padding: 0 24px; }
.faq-item.active .faq-answer { max-height: 300px; padding: 0 24px 20px; }
.faq-answer p { color: var(--text-soft); font-size: 0.9rem; line-height: 1.7; }
/* ===== CTA ===== */
.cta-section { background: linear-gradient(135deg, var(--primary-light), var(--primary)); border-radius: var(--radius-lg); padding: 64px; text-align: center; border: 1px solid rgba(201, 168, 76, 0.15); position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat; opacity: 0.08; }
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 { font-size: 2.4rem; font-weight: 800; margin-bottom: 16px; }
.cta-section p { color: var(--text-soft); font-size: 1.05rem; max-width: 560px; margin: 0 auto 28px; }
.cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
/* ===== FOOTER ===== */
.footer { border-top: 1px solid rgba(201, 168, 76, 0.08); padding: 48px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo { font-size: 1.4rem; }
.footer-brand p { color: var(--text-muted); font-size: 0.85rem; margin-top: 12px; max-width: 300px; line-height: 1.7; }
.footer-col h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 16px; color: var(--text); letter-spacing: 0.03em; }
.footer-col a { display: block; color: var(--text-muted); font-size: 0.85rem; padding: 4px 0; transition: var(--transition); }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(201, 168, 76, 0.08); padding-top: 24px; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; }
.footer-bottom p { color: var(--text-muted); font-size: 0.8rem; }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { color: var(--text-muted); font-size: 0.8rem; }
.footer-bottom-links a:hover { color: var(--accent); }
/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero-title { font-size: 3rem; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .posts-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section-title { font-size: 1.8rem; }
  .hero-title { font-size: 2.2rem; }
  .hero-desc { font-size: 1rem; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .stat-number { font-size: 1.6rem; }
  .nav { position: fixed; top: var(--header-height); left: 0; right: 0; background: rgba(10, 8, 18, 0.98); backdrop-filter: blur(20px); flex-direction: column; padding: 20px; gap: 4px; transform: translateY(-120%); transition: var(--transition); border-bottom: 1px solid rgba(201, 168, 76, 0.1); }
  .nav.open { transform: translateY(0); }
  .nav a { width: 100%; text-align: center; padding: 12px 20px; }
  .nav-toggle { display: flex; }
  .features-grid { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .posts-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; gap: 16px; }
  .process-arrow { transform: rotate(90deg); }
  .cta-section { padding: 40px 24px; }
  .cta-section h2 { font-size: 1.6rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
}
@media (max-width: 520px) {
  .hero-title { font-size: 1.8rem; }
  .hero { min-height: 80vh; }
  .hero-content { padding: 40px 0; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .stat-item { display: flex; align-items: center; gap: 12px; text-align: left; }
  .section-title { font-size: 1.5rem; }
  .container { padding: 0 16px; }
  .btn-lg { padding: 14px 32px; font-size: 1rem; }
  .card { padding: 20px; }
}

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f1b2d;
            --primary-light: #1a2d4a;
            --primary-dark: #080f1a;
            --accent: #d4a017;
            --accent-light: #e8c04a;
            --accent-dark: #b8890a;
            --danger: #e74c3c;
            --success: #27ae60;
            --bg: #f5f7fa;
            --bg-card: #ffffff;
            --bg-dark: #0a1422;
            --text: #1a1a2e;
            --text-light: #5a6377;
            --text-white: #f0f2f5;
            --border: #e2e6ed;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow: 0 8px 30px rgba(0,0,0,0.08);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --content-width: 820px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent-dark); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--primary); }
        h1 { font-size: 2.4rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 27, 45, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: opacity var(--transition);
        }
        .logo:hover { opacity: 0.85; color: #fff; }
        .logo i { color: var(--accent); font-size: 1.6rem; }
        .nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.75);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
        }
        .nav a:hover {
            color: #fff;
            background: rgba(255,255,255,0.08);
        }
        .nav a.active {
            color: #fff;
            background: rgba(212, 160, 23, 0.2);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: rgba(255,255,255,0.06);
            border-radius: var(--radius-sm);
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .nav-toggle.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
        .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* ===== Banner ===== */
        .article-banner {
            background: var(--primary-dark) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 80px 0 60px;
            position: relative;
            color: #fff;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8,15,26,0.88) 0%, rgba(15,27,45,0.72) 60%, rgba(15,27,45,0.5) 100%);
        }
        .article-banner .container-narrow {
            position: relative;
            z-index: 2;
        }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-banner .breadcrumb a {
            color: rgba(255,255,255,0.6);
            transition: color var(--transition);
        }
        .article-banner .breadcrumb a:hover { color: var(--accent); }
        .article-banner .breadcrumb .sep { color: rgba(255,255,255,0.3); }
        .article-banner .breadcrumb .current { color: rgba(255,255,255,0.85); }
        .article-banner h1 {
            color: #fff;
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            max-width: 90%;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .article-banner .meta-line {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
        }
        .article-banner .meta-line span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-banner .meta-line i { color: var(--accent); }
        .article-banner .meta-line .category-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            background: rgba(212, 160, 23, 0.2);
            border: 1px solid rgba(212, 160, 23, 0.3);
            color: var(--accent-light);
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* ===== Article Body ===== */
        .article-body-section {
            padding: 50px 0 30px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 48px 52px;
            box-shadow: var(--shadow);
            margin-bottom: 40px;
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body .content p {
            margin-bottom: 1.4em;
        }
        .article-body .content h2, .article-body .content h3 {
            margin-top: 1.8em;
            margin-bottom: 0.6em;
        }
        .article-body .content img {
            border-radius: var(--radius);
            margin: 1.5em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content ul, .article-body .content ol {
            margin: 1.2em 0;
            padding-left: 1.6em;
        }
        .article-body .content li {
            margin-bottom: 0.5em;
            list-style: disc;
        }
        .article-body .content a {
            color: var(--accent-dark);
            text-decoration: underline;
        }
        .article-body .content a:hover {
            color: var(--primary);
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(212,160,23,0.05);
            padding: 16px 24px;
            margin: 1.5em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body .content code {
            background: rgba(15,27,45,0.06);
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 0.9em;
            font-family: 'Fira Code', monospace;
        }
        .article-body .content pre {
            background: var(--primary-dark);
            color: #e8e8e8;
            padding: 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 1.5em 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* ===== Article Nav (prev/next) ===== */
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin-top: 32px;
            padding-top: 32px;
            border-top: 1px solid var(--border);
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            background: var(--bg);
            color: var(--text);
            font-weight: 500;
            font-size: 0.9rem;
            transition: all var(--transition);
            max-width: 48%;
            flex: 1;
        }
        .article-nav a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        .article-nav a i { font-size: 1rem; }
        .article-nav .prev { text-align: left; }
        .article-nav .next { text-align: right; justify-content: flex-end; }
        .article-nav .disabled {
            opacity: 0.3;
            pointer-events: none;
            background: transparent;
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 50px 0 60px;
            background: var(--bg);
        }
        .related-section .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .related-section .section-title h2 {
            font-size: 1.8rem;
            position: relative;
            display: inline-block;
        }
        .related-section .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            margin: 12px auto 0;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: var(--accent);
        }
        .related-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .card-img { transform: scale(1.05); }
        .related-card .card-body {
            padding: 18px 20px 22px;
        }
        .related-card .card-body h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h4 a {
            color: var(--primary);
            transition: color var(--transition);
        }
        .related-card .card-body h4 a:hover { color: var(--accent); }
        .related-card .card-body .card-meta {
            font-size: 0.8rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-card .card-body .card-meta i { font-size: 0.75rem; }
        .related-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px 20px;
            color: var(--text-light);
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 70px 0;
            background: var(--primary-dark) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            position: relative;
            text-align: center;
            color: #fff;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8,15,26,0.85) 0%, rgba(15,27,45,0.75) 100%);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.75);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(212,160,23,0.35);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255,255,255,0.3);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.1);
            border-color: rgba(255,255,255,0.6);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary);
            color: rgba(255,255,255,0.75);
            padding: 60px 0 0;
            border-top: 1px solid rgba(255,255,255,0.05);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 14px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.55);
            max-width: 360px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.5);
            font-size: 0.88rem;
            padding: 5px 0;
            transition: all var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 22px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom-links {
            display: flex;
            gap: 14px;
        }
        .footer-bottom-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.5);
            font-size: 1rem;
            transition: all var(--transition);
        }
        .footer-bottom-links a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
        }
        .not-found-box i {
            font-size: 4rem;
            color: var(--accent);
            margin-bottom: 20px;
            display: block;
        }
        .not-found-box h2 {
            font-size: 1.6rem;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .not-found-box .btn {
            display: inline-flex;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
            .article-banner h1 { font-size: 2.2rem; max-width: 100%; }
        }

        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            .nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(15, 27, 45, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                transform: translateY(-110%);
                opacity: 0;
                transition: all 0.4s ease;
                border-bottom: 1px solid rgba(255,255,255,0.06);
                box-shadow: 0 20px 60px rgba(0,0,0,0.4);
                pointer-events: none;
                max-height: calc(100vh - var(--header-height));
                overflow-y: auto;
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav a {
                padding: 12px 16px;
                font-size: 1rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav a.active::after { display: none; }
            .nav-toggle { display: flex; }
            .article-banner { padding: 60px 0 40px; min-height: 200px; }
            .article-banner h1 { font-size: 1.7rem; }
            .article-body { padding: 28px 24px; }
            .article-body .content { font-size: 1rem; }
            .related-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .cta-section h2 { font-size: 1.5rem; }
            .btn { padding: 12px 26px; font-size: 0.9rem; }
            .article-nav { flex-direction: column; }
            .article-nav a { max-width: 100%; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .container-narrow { padding: 0 16px; }
            .article-banner h1 { font-size: 1.4rem; }
            .article-banner .meta-line { gap: 12px; font-size: 0.8rem; }
            .article-body { padding: 20px 16px; border-radius: var(--radius); }
            .article-body .content { font-size: 0.95rem; }
            .related-grid { grid-template-columns: 1fr; }
            .related-card .card-body { padding: 14px 16px 18px; }
            .footer { padding: 40px 0 0; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section { padding: 50px 0; }
            .cta-buttons { flex-direction: column; align-items: center; }
            .logo { font-size: 1.15rem; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --primary-bg: #eff6ff;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #10b981;
            --dark: #0f172a;
            --dark-soft: #1e293b;
            --text: #1e293b;
            --text-light: #64748b;
            --text-white: #f8fafc;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-card: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.18);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
            --space-section: 100px;
            --space-block: 60px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }

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

        ul,
        ol {
            list-style: none;
            padding: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--dark);
        }

        h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: clamp(1.15rem, 1.8vw, 1.5rem);
        }
        h4 {
            font-size: 1.1rem;
        }

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

        /* ===== Header & Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }
        .header.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
        }

        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.03em;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: opacity var(--transition);
            white-space: nowrap;
        }
        .logo:hover {
            opacity: 0.85;
            color: var(--dark);
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: background var(--transition), color var(--transition);
            position: relative;
        }
        .nav a:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .nav a.active {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 20px;
            right: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            background: transparent;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-alt);
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--dark);
            border-radius: 2px;
            margin: 4px 0;
            transition: transform var(--transition), opacity var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(9px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-9px) rotate(-45deg);
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            padding: calc(var(--header-h) + 60px) 0 80px;
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-soft) 100%);
            position: relative;
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(37, 99, 235, 0.15), transparent 70%);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .page-hero p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.15rem;
            max-width: 720px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .page-hero .hero-badge {
            display: inline-block;
            background: rgba(245, 158, 11, 0.2);
            color: var(--secondary-light);
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            border: 1px solid rgba(245, 158, 11, 0.3);
            backdrop-filter: blur(4px);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            padding: 16px 0;
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text);
            font-weight: 500;
        }
        .breadcrumb i {
            font-size: 0.7rem;
            color: var(--text-light);
        }

        /* ===== Section ===== */
        .section {
            padding: var(--space-section) 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3 {
            color: var(--text-white);
        }

        .section-title {
            text-align: center;
            margin-bottom: 16px;
        }
        .section-title h2 {
            margin-bottom: 12px;
        }
        .section-title p {
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .section-dark .section-title p {
            color: rgba(255, 255, 255, 0.7);
        }

        .section-divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
            margin: 0 auto 32px;
        }

        /* ===== Cards ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
            margin-top: 48px;
        }
        .card-grid-2 {
            grid-template-columns: repeat(auto-fill, minmax(480px, 1fr));
        }
        .card-grid-3 {
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 32px 24px;
            transition: transform var(--transition), box-shadow var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 18px;
        }
        .card h3 {
            margin-bottom: 10px;
        }
        .card p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .card .card-tag {
            display: inline-block;
            margin-top: 14px;
            padding: 4px 14px;
            border-radius: 100px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
        }
        .card .card-img {
            margin: -32px -24px 20px -24px;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            overflow: hidden;
            max-height: 200px;
            object-fit: cover;
            width: calc(100% + 48px);
        }

        /* ===== 流程步骤 ===== */
        .steps {
            margin-top: 48px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            border: 1px solid var(--border);
            text-align: center;
            position: relative;
            transition: transform var(--transition), box-shadow var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }
        .step-item h4 {
            margin-top: 8px;
            margin-bottom: 8px;
        }
        .step-item p {
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .step-item .step-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 8px;
        }

        /* ===== 平台类型 ===== */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
            margin-top: 48px;
        }
        .platform-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 24px 20px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
            transition: transform var(--transition), box-shadow var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .platform-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .platform-card .platform-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
        }
        .platform-card .platform-info h4 {
            margin-bottom: 4px;
            font-size: 1rem;
        }
        .platform-card .platform-info p {
            color: var(--text-light);
            font-size: 0.85rem;
            line-height: 1.6;
        }
        .platform-card .platform-badge {
            display: inline-block;
            margin-top: 8px;
            padding: 2px 12px;
            border-radius: 100px;
            font-size: 0.7rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
        }

        /* ===== 图文区块 ===== */
        .content-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            margin-top: 48px;
        }
        .content-row.reverse {
            direction: rtl;
        }
        .content-row.reverse>* {
            direction: ltr;
        }
        .content-row .text-col h3 {
            margin-bottom: 16px;
        }
        .content-row .text-col p {
            color: var(--text-light);
            margin-bottom: 16px;
            line-height: 1.8;
        }
        .content-row .text-col ul {
            margin-top: 12px;
        }
        .content-row .text-col ul li {
            padding: 8px 0 8px 28px;
            position: relative;
            color: var(--text-light);
        }
        .content-row .text-col ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: 700;
        }
        .content-row .img-col img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
            object-fit: cover;
        }

        /* ===== 优势亮点 ===== */
        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 28px;
            margin-top: 48px;
        }
        .highlight-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: transform var(--transition), box-shadow var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .highlight-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .highlight-item .hl-icon {
            font-size: 2.4rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .highlight-item h4 {
            margin-bottom: 8px;
        }
        .highlight-item p {
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .highlight-item .hl-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 8px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 40px auto 0;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--dark);
            padding: 4px 0;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 0.9rem;
            color: var(--text-light);
            transition: transform var(--transition);
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding-top: 12px;
            color: var(--text-light);
            line-height: 1.8;
            display: none;
            font-size: 0.95rem;
        }
        .faq-answer.open {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            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-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            border: none;
            line-height: 1.2;
        }
        .btn:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 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);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.2);
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
        }
        .btn-white:hover {
            background: var(--bg-alt);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
            color: var(--primary-dark);
        }
        .btn-outline-white {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
        }
        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 32px;
        }
        .footer .logo {
            font-size: 1.3rem;
            margin-bottom: 12px;
            display: inline-block;
        }
        .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 p {
            font-size: 0.9rem;
            line-height: 1.8;
            margin-top: 12px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            padding: 6px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 28px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom-links {
            display: flex;
            gap: 16px;
        }
        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.4);
            font-size: 1.2rem;
            transition: color var(--transition);
        }
        .footer-bottom-links a:hover {
            color: var(--primary-light);
        }

        /* ===== 标签 ===== */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 16px;
        }
        .tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 100px;
            background: var(--bg-alt);
            color: var(--text-light);
            font-size: 0.8rem;
            font-weight: 500;
            border: 1px solid var(--border);
            transition: background var(--transition), color var(--transition), border-color var(--transition);
        }
        .tag:hover {
            background: var(--primary-bg);
            color: var(--primary);
            border-color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .content-row {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .content-row.reverse {
                direction: ltr;
            }
            .card-grid-2 {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 60px;
                --header-h: 64px;
            }

            .nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px 28px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: transform 0.35s ease, opacity 0.35s ease;
                pointer-events: none;
                gap: 4px;
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .nav a.active::after {
                display: none;
            }
            .nav a.active {
                background: var(--primary-bg);
                color: var(--primary);
            }

            .nav-toggle {
                display: flex;
            }

            .page-hero {
                padding: calc(var(--header-h) + 40px) 0 60px;
                min-height: 300px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 1rem;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .section-title h2 {
                font-size: 1.6rem;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .content-row .img-col img {
                max-height: 260px;
                object-fit: cover;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .highlights-grid {
                grid-template-columns: 1fr;
            }
            .steps {
                grid-template-columns: 1fr;
            }
            .card {
                padding: 24px 18px;
            }
            .platform-card {
                padding: 18px 16px;
                flex-direction: column;
                align-items: flex-start;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .footer-grid {
                gap: 20px;
            }
            .section {
                padding: 44px 0;
            }
            .page-hero {
                padding: calc(var(--header-h) + 28px) 0 44px;
                min-height: 240px;
            }
            .breadcrumb .container {
                font-size: 0.8rem;
                flex-wrap: wrap;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mt-48 {
            margin-top: 48px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }