/* roulang page: index */
:root {
  --primary: #00e5ff;
  --primary-rgb: 0, 229, 255;
  --primary-dark: #00b3c4;
  --accent: #7c4dff;
  --accent-rgb: 124, 77, 255;
  --bg-dark: #0a0e1a;
  --bg-deep: #060a14;
  --bg-card: #111827;
  --bg-elevated: #1a2332;
  --text-main: #e5e7eb;
  --text-muted: #94a3b8;
  --text-bright: #ffffff;
  --border: rgba(255, 255, 255, 0.08);
  --border-neon: rgba(0, 229, 255, 0.25);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif; background: var(--bg-dark); color: var(--text-main); line-height: 1.75; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; height: auto; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
button, input, select, textarea { font-family: inherit; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.grid-container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }
.section { padding: 96px 0; position: relative; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .overline { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 3px; color: var(--primary); text-transform: uppercase; margin-bottom: 12px; }
.section-head h2 { font-size: 40px; line-height: 1.25; font-weight: 800; color: var(--text-bright); letter-spacing: -0.5px; }
.section-head p { font-size: 17px; color: var(--text-muted); margin-top: 14px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 30px; border-radius: 50px; font-weight: 600; font-size: 15px; border: none; cursor: pointer; transition: var(--transition); text-decoration: none; }
.btn-primary { background: var(--primary); color: #060a14; box-shadow: 0 0 20px rgba(0, 229, 255, 0.25); }
.btn-primary:hover { background: #33eaff; transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0, 229, 255, 0.4); }
.btn-outline { background: transparent; color: var(--text-bright); border: 1px solid rgba(255, 255, 255, 0.25); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow-glow); }
.btn-lg { padding: 15px 36px; font-size: 16px; }
.btn-sm { padding: 8px 20px; font-size: 14px; }
.badge { display: inline-block; padding: 5px 14px; border-radius: 50px; font-size: 12px; font-weight: 600; background: rgba(0, 229, 255, 0.1); color: var(--primary); border: 1px solid var(--border-neon); }
/* Header */
.site-header { background: rgba(6, 10, 20, 0.95); border-bottom: 1px solid var(--border); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); position: sticky; top: 0; z-index: 200; }
.site-header::before { content: ''; position: absolute; left: 0; top: 0; width: 100%; height: 2px; background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; position: relative; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 800; color: #fff; letter-spacing: 0.5px; }
.logo-icon { width: 38px; height: 38px; border-radius: 10px; background: linear-gradient(135deg, var(--primary), var(--accent)); display: flex; align-items: center; justify-content: center; color: #060a14; font-size: 16px; box-shadow: 0 0 20px rgba(0, 229, 255, 0.3); }
.main-nav { display: flex; align-items: center; }
.nav-list { display: flex; gap: 6px; }
.nav-list a { display: inline-block; padding: 10px 20px; border-radius: 10px; font-weight: 500; font-size: 15px; color: var(--text-muted); position: relative; }
.nav-list a:hover { color: #fff; background: rgba(0, 229, 255, 0.08); }
.nav-list a.active { color: var(--primary); background: rgba(0, 229, 255, 0.1); box-shadow: 0 0 18px rgba(0, 229, 255, 0.1); text-shadow: 0 0 8px rgba(0, 229, 255, 0.5); }
.nav-list a.active::after { content: ''; position: absolute; left: 50%; bottom: 4px; transform: translateX(-50%); width: 20px; height: 2px; border-radius: 2px; background: var(--primary); box-shadow: 0 0 8px var(--primary); }
.header-actions { display: flex; align-items: center; gap: 14px; }
.menu-toggle { display: none; flex-direction: column; gap: 5px; width: 42px; height: 42px; border: 1px solid var(--border); border-radius: 10px; background: transparent; cursor: pointer; align-items: center; justify-content: center; }
.menu-toggle span { width: 20px; height: 2px; background: var(--text-main); border-radius: 2px; transition: var(--transition); }
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
/* Hero */
.hero { position: relative; min-height: 640px; display: flex; align-items: center; overflow: hidden; padding: 120px 0 90px; }
.hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(6, 10, 20, 0.92) 0%, rgba(6, 10, 20, 0.75) 50%, rgba(10, 14, 26, 0.85) 100%); }
.hero-content { position: relative; z-index: 2; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(0, 229, 255, 0.1); border: 1px solid var(--border-neon); color: var(--primary); padding: 7px 18px; border-radius: 50px; font-size: 13px; font-weight: 600; margin-bottom: 24px; }
.hero h1 { font-size: 52px; line-height: 1.2; font-weight: 900; color: #fff; letter-spacing: -1px; margin-bottom: 20px; }
.hero h1 .highlight { color: var(--primary); text-shadow: 0 0 30px rgba(0, 229, 255, 0.4); }
.hero-desc { font-size: 18px; color: rgba(229, 231, 235, 0.8); max-width: 560px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 20px; font-size: 14px; color: var(--text-muted); }
.hero-tags i { color: var(--primary); margin-right: 4px; }
.hero-panel { background: rgba(17, 24, 39, 0.85); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; backdrop-filter: blur(12px); box-shadow: var(--shadow-card); position: relative; overflow: hidden; }
.hero-panel::after { content: ''; position: absolute; top: 0; right: 0; width: 120px; height: 120px; border-radius: 50%; background: rgba(0, 229, 255, 0.08); filter: blur(40px); }
.panel-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; font-size: 14px; color: var(--text-muted); }
.status-dot { width: 10px; height: 10px; border-radius: 50%; background: #22c55e; box-shadow: 0 0 10px rgba(34, 197, 94, 0.6); animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
.panel-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 28px; }
.stat-item { text-align: center; padding: 18px 10px; background: rgba(255, 255, 255, 0.03); border-radius: var(--radius-md); border: 1px solid rgba(255, 255, 255, 0.05); }
.stat-num { display: block; font-size: 28px; font-weight: 800; color: #fff; line-height: 1.2; }
.stat-label { display: block; font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.panel-bar { background: rgba(255, 255, 255, 0.03); border-radius: var(--radius-md); padding: 16px 20px; border: 1px solid rgba(255, 255, 255, 0.05); }
.bar-label { display: flex; justify-content: space-between; font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
.progress-track { height: 6px; background: rgba(255, 255, 255, 0.1); border-radius: 6px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 6px; box-shadow: 0 0 12px rgba(0, 229, 255, 0.5); }
/* About */
.section-about { background: var(--bg-deep); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-media { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-card); position: relative; }
.about-media img { width: 100%; height: 380px; object-fit: cover; }
.about-media::after { content: ''; position: absolute; inset: 0; border-radius: var(--radius-lg); box-shadow: inset 0 0 40px rgba(6, 10, 20, 0.4); background: linear-gradient(180deg, transparent 60%, rgba(6, 10, 20, 0.6)); }
.about-content h2 { font-size: 36px; font-weight: 800; line-height: 1.3; color: #fff; margin-bottom: 20px; }
.about-content p { font-size: 16px; color: var(--text-muted); margin-bottom: 24px; }
.about-tags { display: flex; flex-wrap: wrap; gap: 12px; }
.about-tags span { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 50px; background: rgba(0, 229, 255, 0.06); border: 1px solid var(--border-neon); color: var(--primary); font-size: 13px; font-weight: 600; }
/* Category Section */
.section-category { background: linear-gradient(180deg, var(--bg-deep), var(--bg-dark)); }
.cat-card { position: relative; border-radius: var(--radius-lg); overflow: hidden; background: var(--bg-card); border: 1px solid var(--border); padding: 56px 48px; display: flex; align-items: center; gap: 48px; box-shadow: var(--shadow-card); transition: var(--transition); }
.cat-card:hover { box-shadow: 0 8px 40px rgba(0, 229, 255, 0.1); transform: translateY(-4px); border-color: var(--border-neon); }
.cat-card-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.08; }
.cat-card-info { position: relative; flex: 1; }
.cat-card-info h3 { font-size: 32px; font-weight: 800; color: #fff; margin-bottom: 14px; }
.cat-card-info p { color: var(--text-muted); margin-bottom: 24px; font-size: 16px; max-width: 480px; }
.cat-card-img { position: relative; flex: 0 0 280px; border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-card); }
.cat-card-img img { width: 100%; height: 220px; object-fit: cover; }
/* News */
.section-news { background: var(--bg-deep); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card { background: var(--bg-card); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); transition: var(--transition); height: 100%; }
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-card); border-color: var(--border-neon); }
.news-card-link { display: block; height: 100%; }
.news-card-body { padding: 28px; display: flex; flex-direction: column; height: 100%; }
.news-card-body .badge { align-self: flex-start; margin-bottom: 16px; }
.news-card-body h3 { font-size: 18px; font-weight: 700; color: #fff; line-height: 1.5; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card-body p { font-size: 14px; color: var(--text-muted); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 20px; flex: 1; }
.news-card-footer { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--border); padding-top: 16px; }
.news-date { font-size: 13px; color: var(--text-muted); }
.news-more { font-size: 13px; font-weight: 600; color: var(--primary); }
.news-more i { transition: transform 0.3s; }
.news-card:hover .news-more i { transform: translateX(4px); }
.news-empty { grid-column: 1 / -1; text-align: center; padding: 60px; background: var(--bg-card); border-radius: var(--radius-lg); color: var(--text-muted); font-size: 16px; border: 1px dashed var(--border); }
/* Stats */
.section-stats { background: var(--bg-dark); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stats-card { text-align: center; padding: 36px 20px; background: var(--bg-card); border-radius: var(--radius-lg); border: 1px solid var(--border); transition: var(--transition); }
.stats-card:hover { border-color: var(--border-neon); box-shadow: var(--shadow-glow); }
.stats-icon { width: 48px; height: 48px; border-radius: 12px; background: rgba(0, 229, 255, 0.1); display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; color: var(--primary); font-size: 20px; }
.stats-num { font-size: 44px; font-weight: 900; color: #fff; line-height: 1.1; }
.stats-label { font-size: 14px; color: var(--text-muted); margin-top: 8px; }
/* Features */
.section-features { background: var(--bg-deep); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature-card { background: var(--bg-card); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); transition: var(--transition); }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-card); border-color: var(--border-neon); }
.feature-img { overflow: hidden; position: relative; }
.feature-img img { width: 100%; height: 200px; object-fit: cover; transition: transform 0.5s; }
.feature-card:hover .feature-img img { transform: scale(1.05); }
.feature-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 50%, rgba(10, 14, 26, 0.5)); }
.feature-body { padding: 28px; }
.feature-body h3 { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.feature-body p { font-size: 15px; color: var(--text-muted); }
/* Flow */
.section-flow { background: var(--bg-dark); }
.flow-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; position: relative; }
.flow-grid::before { content: ''; position: absolute; top: 40px; left: 12%; right: 12%; height: 2px; background: linear-gradient(90deg, var(--primary), var(--accent)); opacity: 0.3; }
.flow-step { text-align: center; padding: 32px 24px; position: relative; z-index: 1; background: var(--bg-card); border-radius: var(--radius-lg); border: 1px solid var(--border); }
.flow-step::before { content: attr(data-step); display: flex; align-items: center; justify-content: center; width: 56px; height: 56px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--accent)); color: #060a14; font-size: 20px; font-weight: 800; margin: 0 auto 20px; box-shadow: 0 0 24px rgba(0, 229, 255, 0.3); }
.flow-step h3 { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.flow-step p { font-size: 14px; color: var(--text-muted); }
/* FAQ */
.section-faq { background: var(--bg-deep); }
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { background: var(--bg-card); border-radius: var(--radius-md); border: 1px solid var(--border); margin-bottom: 16px; overflow: hidden; transition: var(--transition); }
.faq-item.active { border-color: var(--border-neon); box-shadow: var(--shadow-glow); }
.faq-question { display: flex; justify-content: space-between; align-items: center; padding: 22px 28px; cursor: pointer; font-weight: 600; font-size: 16px; color: #fff; }
.faq-question i { color: var(--primary); transition: transform 0.3s; font-size: 14px; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-item.active .faq-answer { max-height: 500px; }
.faq-answer p { padding: 0 28px 24px; color: var(--text-muted); font-size: 15px; }
/* CTA */
.section-cta { padding: 0; }
.cta-box { position: relative; border-radius: var(--radius-lg); overflow: hidden; padding: 72px 64px; text-align: center; margin: 96px 0; background-color: var(--bg-card); border: 1px solid var(--border); }
.cta-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.15; }
.cta-content { position: relative; z-index: 1; }
.cta-content h2 { font-size: 36px; font-weight: 800; color: #fff; margin-bottom: 16px; }
.cta-content p { font-size: 17px; color: var(--text-muted); margin-bottom: 32px; max-width: 560px; margin-left: auto; margin-right: auto; }
/* Footer */
.site-footer { background: var(--bg-deep); border-top: 1px solid var(--border); padding: 64px 0 24px; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 14px; color: var(--text-muted); max-width: 300px; }
.footer-col h4 { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 14px; color: var(--text-muted); }
.footer-col a:hover { color: var(--primary); }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 24px; text-align: center; font-size: 13px; color: var(--text-muted); }
/* Responsive */
@media (max-width: 1024px) {
  .hero { padding: 100px 0 60px; }
  .hero h1 { font-size: 40px; }
  .about-grid { gap: 40px; }
  .cat-card { flex-direction: column; padding: 40px 28px; gap: 28px; }
  .cat-card-img { flex: 0 0 auto; width: 100%; max-width: 360px; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 30px; }
  .hero { min-height: auto; padding: 80px 0 50px; }
  .hero h1 { font-size: 32px; }
  .hero-content .grid-x { flex-direction: column; }
  .hero-right { margin-top: 40px; }
  .about-grid { grid-template-columns: 1fr; }
  .flow-grid { grid-template-columns: 1fr; gap: 20px; }
  .flow-grid::before { display: none; }
  .cta-box { padding: 48px 28px; }
  .main-nav { position: fixed; left: 0; right: 0; top: 72px; background: var(--bg-deep); border-bottom: 1px solid var(--border); padding: 16px 24px; display: none; flex-direction: column; align-items: flex-start; box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6); }
  .main-nav.open { display: flex; }
  .nav-list { flex-direction: column; width: 100%; }
  .nav-list a { display: block; padding: 14px 16px; width: 100%; }
  .menu-toggle { display: flex; }
  .header-cta-btn { display: none; }
  .news-grid, .features-grid, .stats-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 30px; }
}
@media (max-width: 520px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .hero h1 { font-size: 28px; }
  .hero-desc { font-size: 15px; }
  .panel-stats { grid-template-columns: 1fr; }
  .stat-item { padding: 14px; }
  .section-head h2 { font-size: 26px; }
  .btn-lg { padding: 12px 24px; font-size: 14px; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
    :root {
      --primary: #00d4ff;
      --primary-glow: rgba(0, 212, 255, 0.35);
      --secondary: #a855f7;
      --secondary-glow: rgba(168, 85, 247, 0.25);
      --bg-dark: #080d18;
      --bg-deep: #050810;
      --bg-card: #0f172a;
      --bg-card-hover: #16213a;
      --border-dark: #1e2a44;
      --text-light: #e8edf5;
      --text-body: #a7b4cc;
      --text-muted: #6a7a99;
      --white: #ffffff;
      --radius-lg: 18px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --shadow-lg: 0 18px 50px rgba(0, 0, 0, 0.5), 0 0 40px rgba(0, 212, 255, 0.05);
      --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.4);
      --shadow-sm: 0 4px 18px rgba(0, 0, 0, 0.35);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }

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

    html { scroll-behavior: smooth; }

    body {
      font-family: var(--font-main);
      background: var(--bg-dark);
      color: var(--text-body);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

    img { max-width: 100%; display: block; }
    a { color: var(--primary); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--text-light); }
    button, input, select, textarea { font-family: inherit; }

    ul, ol { list-style: none; }

    .grid-container { max-width: 1280px; padding-left: 24px; padding-right: 24px; }

    ::selection { background: rgba(0, 212, 255, 0.3); color: #fff; }

    /* ===== 顶部导航 ===== */
    .site-header {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 1000;
      background: rgba(8, 13, 24, 0.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-dark);
      box-shadow: 0 0 24px rgba(0, 212, 255, 0.04);
      transition: var(--transition);
    }

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

    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 21px;
      font-weight: 700;
      color: var(--text-light);
      letter-spacing: 0.5px;
      white-space: nowrap;
    }

    .logo-icon {
      display: inline-flex;
      width: 38px; height: 38px;
      align-items: center;
      justify-content: center;
      border-radius: 10px;
      background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(168, 85, 247, 0.15));
      border: 1px solid rgba(0, 212, 255, 0.25);
      color: var(--primary);
      font-size: 17px;
      box-shadow: 0 0 18px var(--primary-glow);
    }

    .main-nav { flex: 1; display: flex; justify-content: center; }

    .nav-list {
      display: flex;
      gap: 8px;
      align-items: center;
    }

    .nav-list a {
      display: inline-block;
      padding: 8px 18px;
      border-radius: 999px;
      font-size: 14.5px;
      font-weight: 500;
      color: var(--text-body);
      background: transparent;
      border: 1px solid transparent;
      transition: var(--transition);
    }

    .nav-list a:hover {
      color: var(--white);
      background: rgba(0, 212, 255, 0.06);
      border-color: rgba(0, 212, 255, 0.15);
    }

    .nav-list a.active {
      color: var(--white);
      background: rgba(0, 212, 255, 0.1);
      border-color: rgba(0, 212, 255, 0.35);
      box-shadow: 0 0 20px var(--primary-glow), inset 0 0 12px rgba(0, 212, 255, 0.06);
      text-shadow: 0 0 10px rgba(0, 212, 255, 0.4);
      font-weight: 600;
    }

    .header-actions { display: flex; align-items: center; gap: 14px; }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border-radius: var(--radius-md);
      font-size: 14.5px;
      font-weight: 600;
      padding: 10px 22px;
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      text-align: center;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #fff;
      border: none;
      box-shadow: 0 4px 20px rgba(0, 212, 255, 0.25);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4), 0 0 30px rgba(168, 85, 247, 0.2);
      color: #fff;
    }

    .btn-outline {
      background: transparent;
      border-color: rgba(0, 212, 255, 0.4);
      color: var(--primary);
    }

    .btn-outline:hover {
      background: rgba(0, 212, 255, 0.08);
      border-color: var(--primary);
      color: var(--white);
      box-shadow: 0 0 16px var(--primary-glow);
    }

    .btn-lg { padding: 14px 34px; font-size: 16px; }

    .nav-toggle {
      display: none;
      width: 44px; height: 44px;
      background: transparent;
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-sm);
      cursor: pointer;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
    }
    .nav-toggle span {
      display: block;
      width: 20px; height: 2px;
      background: var(--text-body);
      border-radius: 2px;
      transition: var(--transition);
    }

    /* ===== 页面 Hero ===== */
    .page-hero {
      position: relative;
      padding: 170px 0 100px;
      background: linear-gradient(135deg, rgba(5, 8, 16, 0.88), rgba(8, 13, 24, 0.76)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
      border-bottom: 1px solid var(--border-dark);
      overflow: hidden;
    }

    .page-hero::after {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse at top right, rgba(0, 212, 255, 0.1), transparent 60%);
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 780px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: 999px;
      background: rgba(0, 212, 255, 0.1);
      border: 1px solid rgba(0, 212, 255, 0.3);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 24px;
      box-shadow: 0 0 16px var(--primary-glow);
    }

    .hero-content h1 {
      font-size: 48px;
      line-height: 1.2;
      color: var(--white);
      font-weight: 800;
      letter-spacing: 1px;
      margin-bottom: 20px;
    }

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

    .hero-content p {
      font-size: 17px;
      color: var(--text-body);
      max-width: 620px;
      margin-bottom: 32px;
    }

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

    .hero-tags {
      display: flex;
      gap: 14px;
      margin-top: 32px;
      flex-wrap: wrap;
    }

    .hero-tags span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      color: var(--text-body);
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.06);
      border-radius: 999px;
      padding: 5px 14px;
    }

    .hero-tags i { color: var(--primary); font-size: 12px; }

    /* ===== 通用板块 ===== */
    .section { padding: 90px 0; }

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

    .section-head {
      text-align: center;
      max-width: 680px;
      margin: 0 auto 54px;
    }

    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 2px;
      text-transform: uppercase;
      color: var(--primary);
      background: rgba(0, 212, 255, 0.08);
      border: 1px solid rgba(0, 212, 255, 0.2);
      border-radius: 999px;
      padding: 6px 20px;
      margin-bottom: 16px;
    }

    .section-head h2 {
      font-size: 34px;
      color: var(--white);
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 12px;
    }

    .section-head p { font-size: 16px; color: var(--text-body); }

    /* ===== 步骤卡片 ===== */
    .steps-section { padding: 90px 0; }

    .step-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 34px 28px;
      height: 100%;
      position: relative;
      transition: var(--transition);
      overflow: hidden;
    }

    .step-card::before {
      content: "";
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      opacity: 0.5;
    }

    .step-card:hover {
      transform: translateY(-5px);
      border-color: rgba(0, 212, 255, 0.3);
      box-shadow: var(--shadow-md), 0 0 30px rgba(0, 212, 255, 0.06);
    }

    .step-num {
      font-size: 44px;
      font-weight: 800;
      color: transparent;
      -webkit-background-clip: text;
      background-clip: text;
      background-image: linear-gradient(135deg, var(--primary), var(--secondary));
      line-height: 1;
      margin-bottom: 20px;
      opacity: 0.9;
    }

    .step-card h3 {
      font-size: 20px;
      color: var(--white);
      margin-bottom: 12px;
      font-weight: 700;
    }

    .step-card p { font-size: 14.5px; color: var(--text-body); }

    .step-card .step-icon {
      position: absolute;
      right: 20px;
      top: 26px;
      font-size: 26px;
      color: rgba(0, 212, 255, 0.25);
    }

    /* ===== 登录方式卡片 ===== */
    .methods-section { padding: 90px 0; background: var(--bg-deep); }

    .method-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      overflow: hidden;
      height: 100%;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .method-card:hover {
      transform: translateY(-6px);
      border-color: rgba(168, 85, 247, 0.35);
      box-shadow: var(--shadow-md), 0 0 26px rgba(168, 85, 247, 0.08);
    }

    .method-cover {
      position: relative;
      height: 200px;
      overflow: hidden;
    }

    .method-cover img {
      width: 100%; height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .method-card:hover .method-cover img { transform: scale(1.05); }

    .method-cover::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 50%, rgba(8, 13, 24, 0.85) 100%);
    }

    .method-body { padding: 26px 24px 30px; flex: 1; display: flex; flex-direction: column; }

    .method-body h3 { font-size: 20px; color: var(--white); font-weight: 700; margin-bottom: 10px; }

    .method-body p { font-size: 14.5px; color: var(--text-body); flex: 1; margin-bottom: 18px; }

    .method-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
    }

    .method-link i { font-size: 13px; transition: var(--transition); }

    .method-link:hover i { transform: translateX(5px); }

    /* ===== 安全区块 ===== */
    .security-section {
      padding: 90px 0;
      background: linear-gradient(135deg, rgba(5, 8, 16, 0.94), rgba(8, 13, 24, 0.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }

    .security-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: center; }

    .security-content .section-tag { margin-left: 0; }

    .security-content h2 {
      font-size: 30px;
      color: var(--white);
      line-height: 1.35;
      margin-bottom: 20px;
    }

    .security-content p { font-size: 15.5px; margin-bottom: 26px; }

    .security-list { display: flex; flex-direction: column; gap: 18px; }

    .security-item {
      display: flex;
      align-items: center;
      gap: 16px;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.06);
      border-radius: var(--radius-md);
      padding: 16px 18px;
      transition: var(--transition);
    }

    .security-item:hover { border-color: rgba(0, 212, 255, 0.25); background: rgba(0, 212, 255, 0.03); }

    .security-item i {
      font-size: 22px;
      color: var(--primary);
      flex-shrink: 0;
    }

    .security-item strong { display: block; color: var(--white); font-size: 15px; margin-bottom: 2px; }
    .security-item span { font-size: 13.5px; color: var(--text-muted); }

    /* ===== 数据统计 ===== */
    .stats-section { padding: 70px 0; background: var(--bg-dark); border-bottom: 1px solid var(--border-dark); }

    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

    .stat-card {
      text-align: center;
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 32px 20px;
      transition: var(--transition);
    }

    .stat-card:hover { transform: translateY(-4px); border-color: rgba(0, 212, 255, 0.3); box-shadow: var(--shadow-md); }

    .stat-num {
      font-size: 42px;
      font-weight: 800;
      color: var(--white);
      line-height: 1.2;
    }

    .stat-num span { color: var(--primary); }

    .stat-label { font-size: 14px; color: var(--text-muted); margin-top: 6px; }

    /* ===== FAQ ===== */
    .faq-section { padding: 90px 0; }

    .faq-wrap { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }

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

    .faq-item:hover { border-color: rgba(0, 212, 255, 0.25); }

    .faq-item details > summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 20px 24px;
      cursor: pointer;
      color: var(--text-light);
      font-weight: 600;
      font-size: 16px;
      list-style: none;
      transition: var(--transition);
    }

    .faq-item details > summary::-webkit-details-marker { display: none; }

    .faq-item details > summary i {
      color: var(--primary);
      transition: var(--transition);
      font-size: 16px;
    }

    .faq-item details[open] > summary { color: var(--primary); }
    .faq-item details[open] > summary i { transform: rotate(45deg); }

    .faq-answer { padding: 0 24px 22px; font-size: 14.5px; color: var(--text-body); line-height: 1.8; }

    /* ===== CTA ===== */
    .cta-section {
      padding: 80px 0;
      background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(168, 85, 247, 0.06)), var(--bg-deep);
      border-top: 1px solid var(--border-dark);
      text-align: center;
    }

    .cta-inner {
      max-width: 700px;
      margin: 0 auto;
    }

    .cta-inner h2 { font-size: 34px; color: var(--white); font-weight: 800; margin-bottom: 14px; }

    .cta-inner p { font-size: 16px; color: var(--text-body); margin-bottom: 30px; }

    .cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

    /* ===== 页脚 ===== */
    .site-footer {
      background: var(--bg-deep);
      border-top: 1px solid var(--border-dark);
      padding: 64px 0 28px;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      margin-bottom: 28px;
    }

    .footer-brand p { font-size: 14px; color: var(--text-muted); margin-top: 16px; max-width: 340px; line-height: 1.7; }

    .footer-col h4 {
      font-size: 15px;
      color: var(--white);
      font-weight: 700;
      margin-bottom: 18px;
    }

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

    .footer-col a { font-size: 14px; color: var(--text-muted); }

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

    .footer-bottom {
      text-align: center;
      font-size: 13px;
      color: var(--text-muted);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .hero-content h1 { font-size: 38px; }

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

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

      .footer-top { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .header-row { height: 64px; }

      .main-nav {
        position: fixed;
        top: 64px; left: 0; right: 0;
        background: rgba(8, 13, 24, 0.98);
        padding: 16px 24px;
        transform: translateY(-120%);
        transition: transform 0.3s ease;
        flex-direction: column;
        align-items: stretch;
        border-bottom: 1px solid var(--border-dark);
        z-index: 999;
        backdrop-filter: blur(14px);
      }

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

      .nav-list { flex-direction: column; gap: 4px; width: 100%; }

      .nav-list a { display: block; width: 100%; text-align: center; }

      .nav-toggle { display: inline-flex; }

      .page-hero { padding: 140px 0 70px; }

      .hero-content h1 { font-size: 32px; }

      .section { padding: 65px 0; }

      .section-head h2 { font-size: 27px; }

      .footer-top { grid-template-columns: 1fr; gap: 30px; }

      .faq-item details > summary { font-size: 15px; padding: 18px 18px; }

      .faq-answer { padding: 0 18px 18px; }
    }

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

      .hero-content h1 { font-size: 27px; }

      .hero-content p { font-size: 15px; }

      .hero-actions { flex-direction: column; width: 100%; }
      .hero-actions .btn { width: 100%; }

      .step-card { padding: 26px 20px; }

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

      .footer-bottom { font-size: 12px; }

      .btn-lg { padding: 12px 26px; font-size: 15px; }
    }

/* roulang page: article */
:root {
  --bg-dark: #0a0e1a;
  --bg-deep: #0d1220;
  --bg-card: #111827;
  --bg-card-hover: #161f33;
  --neon: #00e5ff;
  --neon-glow: rgba(0, 229, 255, 0.35);
  --accent: #7b61ff;
  --accent-glow: rgba(123, 97, 255, 0.3);
  --text-main: #e8eaf0;
  --text-muted: #8e96a8;
  --border: rgba(0, 229, 255, 0.12);
  --border-strong: rgba(0, 229, 255, 0.28);
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.55), 0 0 20px rgba(0, 229, 255, 0.08);
  --space-section: 80px;
  --space-section-sm: 50px;
  --transition: all 0.3s ease;
}
*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background-color: var(--bg-dark);
  overflow-x: hidden;
}
a {
  color: var(--neon);
  text-decoration: none;
  transition: var(--transition);
}
a:hover {
  color: #fff;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
ul, ol {
  padding: 0;
  margin: 0;
  list-style: none;
}
button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}
input {
  font-family: inherit;
}
.grid-container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 30px;
  border-radius: 50px;
  background: linear-gradient(135deg, var(--neon), #00b8d4);
  color: #0a0e1a;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.5px;
  border: 1px solid rgba(0, 229, 255, 0.5);
  box-shadow: 0 4px 20px rgba(0, 229, 255, 0.25);
  transition: var(--transition);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #33ecff, #00d4ff);
  box-shadow: 0 6px 28px rgba(0, 229, 255, 0.4);
  transform: translateY(-2px);
  color: #0a0e1a;
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 30px;
  border-radius: 50px;
  border: 1px solid var(--border-strong);
  color: var(--neon);
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  background: transparent;
}
.btn-outline:hover {
  background: rgba(0, 229, 255, 0.08);
  border-color: var(--neon);
  color: #fff;
  transform: translateY(-2px);
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: 50px;
  background: rgba(0, 229, 255, 0.12);
  border: 1px solid var(--border);
  color: var(--neon);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--neon);
  margin-bottom: 14px;
}
.section-label::before {
  content: '';
  width: 28px;
  height: 2px;
  background: var(--neon);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--neon-glow);
}
.site-header {
  background: rgba(10, 14, 26, 0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 229, 255, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
}
.site-header .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.5px;
}
.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--neon), var(--accent));
  color: #0a0e1a;
  font-size: 16px;
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.3);
}
.main-nav {
  display: flex;
  align-items: center;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-list a {
  display: inline-block;
  padding: 9px 20px;
  border-radius: 50px;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  border: 1px solid transparent;
}
.nav-list a:hover {
  color: var(--neon);
  background: rgba(0, 229, 255, 0.07);
}
.nav-list a.active {
  color: var(--neon);
  background: rgba(0, 229, 255, 0.1);
  border-color: var(--border);
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.12);
}
.nav-toggle {
  display: none;
  font-size: 22px;
  color: var(--text-main);
  padding: 6px;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
}
.nav-toggle:hover {
  color: var(--neon);
  background: rgba(0, 229, 255, 0.08);
}
.article-hero {
  position: relative;
  padding: 100px 0 70px;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border);
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10, 14, 26, 0.95) 20%, rgba(20, 24, 40, 0.82) 60%, rgba(10, 14, 26, 0.6) 100%);
}
.article-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 900px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--neon);
}
.breadcrumb a:hover {
  color: #fff;
}
.breadcrumb .sep {
  color: rgba(232, 234, 240, 0.4);
}
.article-hero h1 {
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1.25;
  font-weight: 800;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text-muted);
  font-size: 14px;
}
.meta-item i {
  color: var(--neon);
  opacity: 0.8;
}
.article-main-section {
  padding: var(--space-section) 0;
  background: var(--bg-dark);
  position: relative;
}
.article-main-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.2), transparent);
}
.article-body {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 45px;
  position: relative;
  overflow: hidden;
}
.article-body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--neon), var(--accent));
  opacity: 0.7;
}
.article-body h2 {
  font-size: 26px;
  font-weight: 700;
  color: #fff;
  margin: 40px 0 18px;
  padding-left: 16px;
  border-left: 3px solid var(--neon);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin: 30px 0 14px;
  line-height: 1.5;
}
.article-body p {
  margin: 0 0 20px;
  color: #c7cdd9;
  font-size: 16.5px;
  line-height: 1.9;
}
.article-body ul, .article-body ol {
  margin: 0 0 24px 20px;
  color: #c7cdd9;
  line-height: 1.9;
}
.article-body ul {
  list-style: disc;
}
.article-body ol {
  list-style: decimal;
}
.article-body li {
  margin-bottom: 8px;
}
.article-body blockquote {
  margin: 30px 0;
  padding: 20px 28px;
  border-left: 4px solid var(--accent);
  background: rgba(123, 97, 255, 0.08);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: #d5d9e5;
  font-style: italic;
}
.article-body img {
  border-radius: var(--radius-sm);
  margin: 30px 0;
  box-shadow: var(--shadow);
}
.article-body a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.article-body a:hover {
  color: #fff;
}
.not-found-box {
  text-align: center;
  padding: 80px 30px;
}
.not-found-box h2 {
  font-size: 40px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
  border: none;
  padding: 0;
}
.not-found-box p {
  color: var(--text-muted);
  font-size: 17px;
  margin-bottom: 32px;
}
.not-found-box .btn-primary {
  margin-top: 8px;
}
.article-sidebar {
  position: sticky;
  top: 100px;
}
.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 24px;
  transition: var(--transition);
}
.sidebar-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-hover);
}
.sidebar-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-card h3::before {
  content: '';
  width: 4px;
  height: 18px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--neon), var(--accent));
}
.sidebar-card p {
  color: var(--text-muted);
  font-size: 14.5px;
  line-height: 1.8;
  margin-bottom: 18px;
}
.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sidebar-links a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 14.5px;
  border: 1px solid transparent;
  transition: var(--transition);
}
.sidebar-links a i {
  color: var(--neon);
  font-size: 14px;
  opacity: 0.8;
}
.sidebar-links a:hover {
  color: var(--neon);
  background: rgba(0, 229, 255, 0.06);
  border-color: var(--border);
}
.sidebar-img {
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-top: 8px;
}
.sidebar-img img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.sidebar-img:hover img {
  transform: scale(1.04);
}
.sidebar-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 10px;
}
.sidebar-stat {
  background: rgba(0, 229, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 10px;
  text-align: center;
}
.sidebar-stat .num {
  font-size: 26px;
  font-weight: 800;
  color: var(--neon);
  line-height: 1.2;
  display: block;
}
.sidebar-stat .label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
  display: block;
}
.related-section {
  padding: var(--space-section) 0;
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
}
.related-section .section-header {
  text-align: center;
  margin-bottom: 50px;
}
.related-section .section-header h2 {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
  letter-spacing: -0.5px;
}
.related-section .section-header p {
  color: var(--text-muted);
  font-size: 16px;
}
.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-hover);
  transform: translateY(-6px);
}
.related-card-img {
  position: relative;
  overflow: hidden;
  height: 180px;
}
.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.related-card:hover .related-card-img img {
  transform: scale(1.05);
}
.related-card-img .badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(8px);
}
.related-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.related-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  line-height: 1.5;
  margin: 0;
}
.related-card-body h3 a {
  color: #fff;
}
.related-card-body h3 a:hover {
  color: var(--neon);
}
.related-card-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
  flex: 1;
}
.related-card-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--text-muted);
}
.related-card-meta a {
  color: var(--neon);
  font-weight: 600;
}
.faq-section {
  padding: var(--space-section) 0;
  background: var(--bg-dark);
}
.faq-section .section-header {
  text-align: center;
  margin-bottom: 50px;
}
.faq-section .section-header h2 {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
}
.faq-section .section-header p {
  color: var(--text-muted);
  font-size: 16px;
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 30px;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}
.faq-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.faq-item h3::before {
  content: '\f059';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: var(--neon);
  font-size: 16px;
  opacity: 0.8;
}
.faq-item p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
  padding-left: 26px;
}
.cta-section {
  padding: 90px 0;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(123, 97, 255, 0.1)), var(--bg-deep);
  border-top: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(0, 229, 255, 0.08);
  filter: blur(60px);
}
.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.cta-inner p {
  color: var(--text-muted);
  font-size: 16px;
  margin-bottom: 32px;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 50px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-brand .logo {
  margin-bottom: 16px;
  font-size: 20px;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 14.5px;
  line-height: 1.8;
  max-width: 360px;
  margin: 0;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 20px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--neon);
  box-shadow: 0 0 8px var(--neon-glow);
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a {
  color: var(--text-muted);
  font-size: 14.5px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.footer-col a:hover {
  color: var(--neon);
  transform: translateX(4px);
}
.footer-col a::before {
  content: '\f105';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 12px;
  color: var(--neon);
  opacity: 0.6;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  margin: 0;
  font-size: 13.5px;
  color: var(--text-muted);
}
.footer-bottom .footer-domain {
  color: rgba(0, 229, 255, 0.5);
  font-weight: 600;
}
:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}
@media screen and (max-width: 1024px) {
  .article-body {
    padding: 32px;
  }
  .article-sidebar {
    margin-top: 40px;
    position: static;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}
@media screen and (max-width: 768px) {
  :root {
    --space-section: 60px;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    width: 100%;
    background: rgba(10, 14, 26, 0.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 20px;
    display: none;
    z-index: 999;
  }
  .main-nav.open {
    display: block;
  }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }
  .nav-list a {
    display: block;
    padding: 14px 20px;
    text-align: center;
    border-radius: var(--radius-sm);
  }
  .article-hero {
    padding: 60px 0 40px;
  }
  .article-hero h1 {
    font-size: 28px;
  }
  .article-body {
    padding: 24px;
  }
  .article-body h2 {
    font-size: 22px;
  }
  .related-card-img {
    height: 150px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}
@media screen and (max-width: 520px) {
  .grid-container {
    padding-left: 18px;
    padding-right: 18px;
  }
  .article-body {
    padding: 20px;
  }
  .hero-meta {
    gap: 12px;
  }
  .faq-item {
    padding: 20px;
  }
  .cta-section {
    padding: 60px 0;
  }
  .cta-inner h2 {
    font-size: 26px;
  }
  .badge {
    font-size: 12px;
    padding: 3px 10px;
  }
}