/* roulang page: index */
/* ========== 设计变量 ========== */
:root {
  --primary: #7c3aed;
  --primary-light: #a78bfa;
  --primary-dark: #4c1d95;
  --accent: #06b6d4;
  --accent-glow: rgba(6, 182, 212, 0.45);
  --success: #10b981;
  --warning: #f59e0b;
  --bg: #080c18;
  --bg-panel: #0e1424;
  --bg-card: #141b2f;
  --bg-elevated: #1b2440;
  --border: rgba(124, 58, 237, 0.16);
  --border-strong: rgba(124, 58, 237, 0.36);
  --text: #e6eaf2;
  --text-muted: #8b9bb8;
  --text-dim: #5d6b84;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 4px 16px rgba(0, 0, 0, .25);
  --shadow: 0 14px 44px rgba(0, 0, 0, .38);
  --shadow-glow: 0 0 36px rgba(124, 58, 237, .28);
  --spacing-section: 92px;
  --container: 1180px;
  --transition: all .25s ease;
}

/* ========== Reset / Base ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: var(--spacing-section) 0; }
.section-alt { background: var(--bg-panel); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* ========== 按钮 ========== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 12px 26px; border-radius: 999px; font-weight: 600; font-size: 15px;
  border: 2px solid transparent; transition: var(--transition); white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 8px 26px rgba(124,58,237,.35); }
.btn-primary:hover { background: var(--primary-light); color: #fff; transform: translateY(-2px); box-shadow: 0 12px 34px rgba(124,58,237,.5); }
.btn-primary:active { transform: translateY(0); }
.btn-accent { background: var(--accent); color: #06121a; box-shadow: 0 8px 26px rgba(6,182,212,.3); }
.btn-accent:hover { background: #22d3ee; transform: translateY(-2px); box-shadow: 0 12px 34px rgba(6,182,212,.5); }
.btn-ghost { background: rgba(255,255,255,.05); color: var(--text); border-color: var(--border-strong); backdrop-filter: blur(8px); }
.btn-ghost:hover { border-color: var(--primary-light); color: #fff; background: rgba(124,58,237,.12); }
.btn-lg { padding: 15px 34px; font-size: 16px; }
.btn-sm { padding: 7px 18px; font-size: 14px; }

/* ========== 徽章 ========== */
.badge {
  display: inline-flex; align-items: center; gap: 6px; padding: 5px 14px;
  border-radius: 999px; font-size: 13px; font-weight: 600; line-height: 1.2;
}
.badge-primary { background: rgba(124,58,237,.14); border: 1px solid rgba(124,58,237,.32); color: var(--primary-light); }
.badge-accent { background: rgba(6,182,212,.13); border: 1px solid rgba(6,182,212,.32); color: #67e8f9; }
.badge-success { background: rgba(16,185,129,.12); border: 1px solid rgba(16,185,129,.3); color: var(--success); }
.badge-warning { background: rgba(245,158,11,.13); border: 1px solid rgba(245,158,11,.3); color: var(--warning); }
.badge-hot { background: linear-gradient(135deg, #f43f5e, #f97316); color: #fff; border: none; }

/* ========== Header / Nav ========== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(8,12,24,.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 74px; gap: 20px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 800; color: #fff; letter-spacing: .4px; white-space: nowrap; }
.logo-icon {
  width: 38px; height: 38px; border-radius: 12px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-glow); font-size: 18px;
}
.logo b { color: var(--primary-light); font-weight: 800; }
.main-nav { display: flex; gap: 30px; }
.main-nav a {
  color: var(--text-muted); font-size: 15px; font-weight: 500;
  padding: 10px 0; position: relative; transition: var(--transition);
}
.main-nav a:hover { color: #fff; }
.main-nav a.active { color: #fff; }
.main-nav a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 2px;
  border-radius: 2px; background: linear-gradient(90deg, var(--primary), var(--accent));
}
.header-actions { display: flex; align-items: center; gap: 14px; }
.live-badge {
  display: inline-flex; align-items: center; gap: 7px; padding: 6px 14px;
  border-radius: 999px; background: rgba(16,185,129,.1); border: 1px solid rgba(16,185,129,.28);
  color: var(--success); font-size: 13px; font-weight: 600; white-space: nowrap;
}
.live-badge i { width: 7px; height: 7px; border-radius: 50%; background: var(--success); animation: pulse 1.4s infinite; }
@keyframes pulse { 0%,100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.5); opacity: .5; } }
.nav-toggle { display: none; background: none; border: 1px solid var(--border-strong); border-radius: 10px; width: 42px; height: 42px; align-items: center; justify-content: center; color: var(--text); font-size: 20px; transition: var(--transition); }
.nav-toggle:hover { border-color: var(--primary-light); }
.nav-toggle.open { background: var(--primary); border-color: var(--primary); }

/* ========== Hero ========== */
.hero { position: relative; min-height: 680px; display: flex; align-items: center; padding: 90px 0 70px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center 30% / cover no-repeat; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(8,12,24,.5) 0%, rgba(8,12,24,.78) 55%, var(--bg) 100%); }
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 860px; margin: 0 auto; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 18px; border-radius: 999px;
  font-size: 14px; font-weight: 600; color: var(--primary-light);
  background: rgba(124,58,237,.12); border: 1px solid rgba(124,58,237,.32); margin-bottom: 20px;
  backdrop-filter: blur(6px);
}
.hero-tag .fire { color: var(--warning); }
.hero h1 {
  font-size: clamp(42px, 6vw, 74px); font-weight: 900; line-height: 1.12; margin-bottom: 20px;
  background: linear-gradient(120deg, #fff 25%, var(--primary-light) 70%, var(--accent) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc { font-size: 18px; color: var(--text-muted); line-height: 1.8; max-width: 640px; margin: 0 auto 32px; }
.hero-activity { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; margin-bottom: 30px; }
.hero-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: flex; justify-content: center; gap: 18px; margin-top: 56px; flex-wrap: wrap; }
.hero-stat {
  min-width: 140px; padding: 20px 28px; border-radius: var(--radius);
  background: rgba(20,27,47,.72); border: 1px solid var(--border);
  backdrop-filter: blur(10px); text-align: center; transition: var(--transition);
}
.hero-stat:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.hero-stat strong { display: block; font-size: 30px; font-weight: 800; color: #fff; letter-spacing: .5px; }
.hero-stat span { font-size: 13px; color: var(--text-muted); }

/* ========== 板块标题 ========== */
.section-head { text-align: center; max-width: 680px; margin: 0 auto 50px; }
.section-head .section-tag {
  display: inline-block; padding: 6px 16px; border-radius: 999px;
  background: rgba(124,58,237,.1); border: 1px solid rgba(124,58,237,.28);
  color: var(--primary-light); font-size: 14px; font-weight: 600; margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; line-height: 1.22; margin-bottom: 12px; letter-spacing: .5px; }
.section-head p { color: var(--text-muted); font-size: 16px; line-height: 1.75; }

/* ========== 核心特色 ========== */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  padding: 34px 28px; border-radius: var(--radius-lg); background: var(--bg-card);
  border: 1px solid var(--border); transition: var(--transition); position: relative; overflow: hidden;
}
.feature-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0; transition: var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--border-strong); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 52px; height: 52px; border-radius: 14px; font-size: 22px;
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
  background: rgba(124,58,237,.14); border: 1px solid rgba(124,58,237,.26);
}
.feature-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { color: var(--text-muted); font-size: 14px; line-height: 1.72; }

/* ========== 分类入口 ========== */
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.category-card {
  border-radius: var(--radius-lg); overflow: hidden; background: var(--bg-card);
  border: 1px solid var(--border); display: flex; flex-direction: column; transition: var(--transition);
}
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--border-strong); }
.category-cover { position: relative; height: 184px; overflow: hidden; }
.category-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.category-card:hover .category-cover img { transform: scale(1.05); }
.category-cover .category-badge { position: absolute; top: 12px; left: 12px; }
.category-body { padding: 24px 24px 26px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.category-body h3 { font-size: 20px; font-weight: 700; }
.category-body p { color: var(--text-muted); font-size: 14px; line-height: 1.7; flex: 1; }
.category-link { display: inline-flex; align-items: center; gap: 6px; color: var(--primary-light); font-weight: 600; font-size: 14px; margin-top: 12px; transition: var(--transition); }
.category-link:hover { color: var(--accent); gap: 12px; }

/* ========== 数据总览 ========== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card {
  padding: 36px 24px; border-radius: var(--radius-lg); background: var(--bg-card);
  border: 1px solid var(--border); text-align: center; transition: var(--transition); position: relative; overflow: hidden;
}
.stat-card::after {
  content: ""; position: absolute; bottom: -40px; right: -40px; width: 120px; height: 120px;
  border-radius: 50%; background: radial-gradient(circle, rgba(124,58,237,.2), transparent 70%);
}
.stat-card:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: var(--shadow-sm); }
.stat-card .stat-num {
  font-size: 42px; font-weight: 900; color: #fff; letter-spacing: 1px; line-height: 1.1;
  background: linear-gradient(120deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.stat-card .stat-label { margin-top: 10px; color: var(--text-muted); font-size: 14px; font-weight: 500; }

/* ========== 最新资讯 ========== */
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.news-item {
  display: flex; gap: 18px; padding: 20px; border-radius: var(--radius-lg);
  background: var(--bg-card); border: 1px solid var(--border); transition: var(--transition);
}
.news-item:hover { transform: translateY(-3px); border-color: var(--border-strong); box-shadow: var(--shadow-sm); }
.news-thumb { width: 138px; height: 92px; border-radius: 12px; overflow: hidden; flex-shrink: 0; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-content { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.news-meta { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-dim); }
.news-meta time { white-space: nowrap; }
.news-content h3 { font-size: 16px; font-weight: 600; line-height: 1.5; margin: 8px 0 6px; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.news-content h3 a { color: var(--text); transition: var(--transition); }
.news-content h3 a:hover { color: var(--primary-light); }
.news-content p { font-size: 13px; color: var(--text-muted); line-height: 1.6; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.empty-tip {
  grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-muted);
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); font-size: 15px;
}

/* ========== 参与流程 ========== */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; position: relative; }
.process-step {
  padding: 34px 22px; border-radius: var(--radius-lg); background: var(--bg-card);
  border: 1px solid var(--border); text-align: center; transition: var(--transition); position: relative;
}
.process-step:hover { transform: translateY(-5px); border-color: var(--border-strong); box-shadow: var(--shadow-sm); }
.step-num {
  width: 48px; height: 48px; margin: 0 auto 16px; border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 800; color: #fff;
  box-shadow: var(--shadow-glow);
}
.process-step h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.process-step p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* ========== FAQ ========== */
.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  border-radius: var(--radius); background: var(--bg-card); border: 1px solid var(--border);
  overflow: hidden; transition: var(--transition);
}
.faq-item[open] { border-color: var(--border-strong); }
.faq-item summary {
  padding: 20px 24px; cursor: pointer; font-size: 15px; font-weight: 600; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 16px; transition: var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; font-size: 22px; color: var(--primary-light); font-weight: 400;
  transition: transform .3s ease; flex-shrink: 0;
}
.faq-item[open] summary { color: var(--primary-light); }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer { padding: 0 24px 22px; color: var(--text-muted); font-size: 14px; line-height: 1.75; }

/* ========== CTA ========== */
.cta-section { position: relative; padding: 96px 0; text-align: center; overflow: hidden; }
.cta-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center 35% / cover no-repeat; }
.cta-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(8,12,24,.7), rgba(8,12,24,.9)); }
.cta-content { position: relative; z-index: 2; max-width: 720px; margin: 0 auto; }
.cta-content h2 { font-size: clamp(28px, 4vw, 42px); font-weight: 900; margin-bottom: 16px; line-height: 1.2; }
.cta-content p { color: var(--text-muted); font-size: 17px; line-height: 1.75; margin-bottom: 32px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ========== 页脚 ========== */
.site-footer { background: var(--bg-panel); border-top: 1px solid var(--border); padding: 56px 0 26px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 36px; }
.footer-brand .logo { margin-bottom: 14px; }
.footer-brand p { color: var(--text-muted); font-size: 14px; line-height: 1.7; max-width: 320px; }
.footer-col h4 { font-size: 15px; font-weight: 700; margin-bottom: 16px; color: #fff; }
.footer-col a { display: block; color: var(--text-muted); padding: 5px 0; font-size: 14px; transition: var(--transition); }
.footer-col a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-bottom { margin-top: 42px; padding-top: 22px; border-top: 1px solid var(--border); text-align: center; color: var(--text-dim); font-size: 13px; display: flex; flex-direction: column; gap: 6px; }

/* ========== 移动端导航抽屉 ========== */
@media (max-width: 1024px) {
  .header-inner { height: 66px; }
  .main-nav {
    position: fixed; top: 66px; left: 0; right: 0; z-index: 99;
    background: rgba(8,12,24,.97); backdrop-filter: blur(18px);
    flex-direction: column; gap: 0; padding: 12px 24px 20px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%); opacity: 0; pointer-events: none;
    transition: transform .35s ease, opacity .25s ease;
  }
  .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .main-nav a { padding: 14px 4px; border-bottom: 1px solid rgba(255,255,255,.04); font-size: 16px; }
  .main-nav a.active::after { display: none; }
  .main-nav a.active { color: var(--primary-light); }
  .nav-toggle { display: inline-flex; }
  .live-badge { display: none; }
}
@media (max-width: 900px) {
  .feature-grid, .category-grid, .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .news-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  :root { --spacing-section: 60px; }
  .container { padding: 0 18px; }
  .feature-grid, .category-grid, .stats-grid, .process-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .hero { min-height: 580px; padding: 64px 0 50px; }
  .hero-stats { gap: 12px; }
  .hero-stat { min-width: 100px; padding: 16px 18px; }
  .hero-stat strong { font-size: 24px; }
  .hero-desc { font-size: 16px; }
  .news-item { flex-direction: column; }
  .news-thumb { width: 100%; height: 170px; }
  .hero-actions .btn, .cta-actions .btn { width: 100%; }
  .header-actions .btn { display: none; }
  .faq-item summary { padding: 16px 18px; font-size: 14px; }
  .faq-answer { padding: 0 18px 18px; }
}

/* ========== 其它细节 ========== */
::selection { background: var(--primary); color: #fff; }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #2a3450; border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: #3a4668; }

/* roulang page: category1 */
:root {
    --primary: #7c5cff;
    --primary-light: #9d7cff;
    --primary-dark: #5b3ce0;
    --accent: #00e0c6;
    --accent-glow: rgba(0, 224, 198, 0.45);
    --warn: #ffb55a;
    --bg-deep: #070b14;
    --bg-dark: #0c1220;
    --bg-panel: #111a2c;
    --bg-card: #141f35;
    --bg-input: #0f1728;
    --border: rgba(124, 92, 255, 0.16);
    --border-light: rgba(255, 255, 255, 0.07);
    --text-main: #eaf0ff;
    --text-body: #b7c1d9;
    --text-muted: #7e89a6;
    --radius-lg: 22px;
    --radius-md: 14px;
    --radius-sm: 8px;
    --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(124, 92, 255, 0.06);
    --shadow-glow: 0 0 40px rgba(124, 92, 255, 0.25);
    --space-section: 96px;
    --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
    --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  }

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

  html {
    scroll-behavior: smooth;
  }

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

  body::before {
    content: "";
    position: fixed;
    inset: 0;
    background: radial-gradient(ellipse 60% 40% at 50% -10%, rgba(124, 92, 255, 0.18), transparent 70%),
      radial-gradient(ellipse 44% 34% at 90% 110%, rgba(0, 224, 198, 0.1), transparent 70%);
    pointer-events: none;
    z-index: 0;
  }

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

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

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

  ul,
  ol {
    list-style: none;
  }

  .container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 28px;
    position: relative;
    z-index: 1;
  }

  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(7, 11, 20, 0.86);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border-light);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 20px;
  }

  .logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 19px;
    font-weight: 700;
    letter-spacing: 0.5px;
    white-space: nowrap;
    color: var(--text-main);
  }

  .logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 10px;
    font-size: 16px;
    color: #fff;
    box-shadow: 0 0 18px rgba(124, 92, 255, 0.4);
    flex-shrink: 0;
  }

  .logo b {
    color: var(--accent);
    font-weight: 700;
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .main-nav a {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-body);
    transition: all 0.25s ease;
    position: relative;
  }

  .main-nav a:hover {
    color: var(--text-main);
    background: rgba(124, 92, 255, 0.1);
  }

  .main-nav a.active {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    box-shadow: 0 6px 18px rgba(124, 92, 255, 0.35);
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
  }

  .live-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-body);
    background: rgba(0, 224, 198, 0.08);
    border: 1px solid rgba(0, 224, 198, 0.2);
    padding: 6px 14px;
    border-radius: 999px;
    white-space: nowrap;
  }

  .live-badge i {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
    animation: pulse 1.8s ease infinite;
  }

  @keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.55; transform: scale(0.78); }
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.28s ease;
    letter-spacing: 0.3px;
    line-height: 1.2;
  }

  .btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 10px 26px rgba(124, 92, 255, 0.35);
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 34px rgba(124, 92, 255, 0.5);
  }

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

  .btn-outline {
    background: transparent;
    color: var(--text-main);
    border: 1px solid rgba(124, 92, 255, 0.5);
  }

  .btn-outline:hover {
    background: rgba(124, 92, 255, 0.12);
    border-color: var(--primary-light);
    transform: translateY(-2px);
  }

  .btn-outline-light {
    background: transparent;
    color: var(--text-main);
    border: 1px solid rgba(255, 255, 255, 0.3);
  }

  .btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.6);
  }

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

  .nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--text-main);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.03);
  }

  .page-banner {
    position: relative;
    padding: 120px 0 100px;
    background: linear-gradient(135deg, rgba(12, 18, 34, 0.92), rgba(7, 11, 20, 0.7)), url("/assets/images/backpic/back-2.png") center/cover no-repeat;
    border-bottom: 1px solid var(--border-light);
    overflow: hidden;
  }

  .page-banner::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(to top, var(--bg-deep), transparent);
    z-index: 1;
    pointer-events: none;
  }

  .page-banner-inner {
    position: relative;
    z-index: 2;
    max-width: 760px;
  }

  .banner-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(124, 92, 255, 0.15);
    border: 1px solid rgba(124, 92, 255, 0.35);
    color: var(--primary-light);
    font-size: 13px;
    padding: 6px 16px;
    border-radius: 999px;
    margin-bottom: 24px;
    font-weight: 500;
  }

  .banner-tag::before {
    content: "◈";
    font-size: 11px;
  }

  .page-banner h1 {
    font-size: 46px;
    font-weight: 800;
    line-height: 1.18;
    letter-spacing: -0.5px;
    margin-bottom: 18px;
  }

  .page-banner h1 .gradient-text {
    background: linear-gradient(90deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .page-banner p {
    font-size: 17px;
    color: var(--text-body);
    line-height: 1.8;
  }

  .banner-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 30px;
  }

  .meta-chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-light);
    border-radius: 999px;
    padding: 10px 20px;
    font-size: 14px;
    color: var(--text-body);
  }

  .meta-chip strong {
    color: var(--text-main);
    font-size: 17px;
  }

  .section {
    padding: var(--space-section) 0;
    position: relative;
  }

  .section-alt {
    background: var(--bg-dark);
    border: solid var(--border-light);
    border-width: 1px 0;
  }

  .section-head {
    margin-bottom: 50px;
  }

  .section-head .section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 10px;
  }

  .section-head h2 {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.4px;
  }

  .section-head p {
    color: var(--text-body);
    margin-top: 12px;
    max-width: 560px;
    font-size: 15px;
  }

  .section-head.center {
    text-align: center;
  }

  .section-head.center p {
    margin-left: auto;
    margin-right: auto;
  }

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

  .stat-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 30px 24px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
  }

  .stat-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0.7;
  }

  .stat-card:hover {
    transform: translateY(-5px);
    border-color: rgba(124, 92, 255, 0.3);
    box-shadow: var(--shadow-card);
  }

  .stat-icon {
    font-size: 24px;
    margin-bottom: 14px;
    display: inline-block;
  }

  .stat-number {
    font-size: 40px;
    font-weight: 800;
    font-family: var(--font-mono);
    line-height: 1.2;
    background: linear-gradient(120deg, var(--text-main), var(--primary-light));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }

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

  .event-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .event-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all 0.35s ease;
  }

  .event-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-card);
    border-color: rgba(124, 92, 255, 0.28);
  }

  .event-cover {
    height: 200px;
    overflow: hidden;
    background: #0d1424;
    position: relative;
  }

  .event-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.45s ease;
  }

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

  .event-status {
    position: absolute;
    top: 16px;
    left: 16px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(7, 11, 20, 0.72);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    padding: 5px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
  }

  .event-status .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 8px var(--accent-glow);
  }

  .event-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
  }

  .event-date {
    font-size: 13px;
    color: var(--text-muted);
    font-family: var(--font-mono);
  }

  .event-title {
    font-size: 19px;
    font-weight: 700;
    margin: 8px 0 10px;
    line-height: 1.4;
  }

  .event-desc {
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.7;
    flex: 1;
  }

  .event-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 22px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
  }

  .event-prize {
    font-size: 15px;
    font-weight: 700;
    color: var(--warn);
  }

  .event-link {
    font-size: 14px;
    color: var(--primary-light);
    font-weight: 600;
    transition: all 0.2s ease;
  }

  .event-link:hover {
    color: var(--accent);
  }

  .bracket-wrap {
    background: var(--bg-panel);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 50px 40px;
    margin-top: 10px;
  }

  .bracket-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    position: relative;
  }

  .bracket-steps::before {
    content: "";
    position: absolute;
    top: 38px;
    left: 8%;
    right: 8%;
    height: 2px;
    background: linear-gradient(90deg, rgba(124, 92, 255, 0.2), rgba(0, 224, 198, 0.4), rgba(124, 92, 255, 0.2));
    z-index: 0;
  }

  .step-item {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 4px;
  }

  .step-num {
    width: 76px;
    height: 76px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, rgba(124, 92, 255, 0.18), rgba(0, 224, 198, 0.1));
    border: 1px solid rgba(124, 92, 255, 0.4);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--primary-light);
    box-shadow: 0 0 24px rgba(124, 92, 255, 0.12);
  }

  .step-item h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .step-item p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
  }

  .reward-layout {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 28px;
    align-items: stretch;
  }

  .reward-card {
    display: flex;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    padding: 32px;
    align-items: center;
    gap: 24px;
    transition: all 0.3s ease;
  }

  .reward-card:hover {
    border-color: rgba(124, 92, 255, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
  }

  .reward-card .reward-icon {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
  }

  .reward-card h3 {
    font-size: 20px;
    margin-bottom: 6px;
  }

  .reward-card p {
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.7;
  }

  .reward-feature {
    background: linear-gradient(135deg, rgba(124, 92, 255, 0.12), rgba(0, 224, 198, 0.06));
    border: 1px solid rgba(124, 92, 255, 0.22);
    border-radius: var(--radius-lg);
    padding: 36px;
  }

  .reward-feature h3 {
    font-size: 20px;
    margin-bottom: 16px;
  }

  .reward-feature ul li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 14px;
    color: var(--text-body);
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  }

  .reward-feature ul li::before {
    content: "✦";
    color: var(--accent);
    flex-shrink: 0;
  }

  .timeline {
    position: relative;
    padding: 10px 0 10px 30px;
  }

  .timeline::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--accent), transparent);
  }

  .timeline-item {
    position: relative;
    padding: 16px 0 16px 24px;
  }

  .timeline-item::before {
    content: "";
    position: absolute;
    left: -28px;
    top: 26px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 14px rgba(124, 92, 255, 0.6);
    border: 2px solid var(--bg-deep);
  }

  .timeline-item .tl-date {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent);
    font-weight: 600;
  }

  .timeline-item h3 {
    font-size: 18px;
    font-weight: 700;
    margin: 6px 0 6px;
  }

  .timeline-item p {
    font-size: 14px;
    color: var(--text-body);
    max-width: 560px;
  }

  .faq-list {
    max-width: 820px;
    margin: 0 auto;
  }

  .faq-item {
    background: var(--bg-panel);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    margin-bottom: 14px;
    overflow: hidden;
    transition: border 0.3s ease;
  }

  .faq-item.open {
    border-color: rgba(124, 92, 255, 0.4);
  }

  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 22px 24px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    transition: background 0.2s ease;
  }

  .faq-question:hover {
    background: rgba(124, 92, 255, 0.05);
  }

  .faq-icon {
    flex-shrink: 0;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    color: var(--accent);
    transition: transform 0.3s ease;
  }

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

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }

  .faq-answer-inner {
    padding: 0 24px 24px;
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.8;
  }

  .cta-section {
    background: linear-gradient(115deg, rgba(124, 92, 255, 0.18), rgba(0, 224, 198, 0.08)), url("/assets/images/backpic/back-3.png") center/cover no-repeat;
    border-radius: var(--radius-lg);
    padding: 72px 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    border: 1px solid rgba(124, 92, 255, 0.26);
    position: relative;
    overflow: hidden;
  }

  .cta-section::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(7, 11, 20, 0.25);
    pointer-events: none;
  }

  .cta-section>* {
    position: relative;
    z-index: 1;
  }

  .cta-section h2 {
    font-size: 30px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 10px;
  }

  .cta-section p {
    font-size: 15px;
    color: var(--text-body);
  }

  .cta-actions {
    display: flex;
    gap: 16px;
    flex-shrink: 0;
    flex-wrap: wrap;
  }

  .site-footer {
    background: #060912;
    border-top: 1px solid var(--border-light);
    padding: 64px 0 30px;
    position: relative;
    z-index: 1;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 0.8fr 0.8fr;
    gap: 48px;
    padding-bottom: 44px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .footer-brand .logo {
    margin-bottom: 18px;
  }

  .footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
    max-width: 340px;
  }

  .footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 18px;
  }

  .footer-col a {
    display: block;
    font-size: 14px;
    color: var(--text-muted);
    padding: 7px 0;
    transition: color 0.2s ease;
  }

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

  .footer-bottom {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding-top: 24px;
    font-size: 13px;
    color: var(--text-muted);
  }

  @media (max-width: 1024px) {
    :root {
      --space-section: 80px;
    }

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

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

    .bracket-steps {
      grid-template-columns: repeat(2, 1fr);
      gap: 40px 30px;
    }

    .bracket-steps::before {
      display: none;
    }

    .reward-layout {
      grid-template-columns: 1fr;
    }

    .cta-section {
      padding: 50px 34px;
      flex-direction: column;
      text-align: center;
    }

    .cta-actions {
      justify-content: center;
    }
  }

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

    .main-nav {
      display: none;
      position: absolute;
      top: 64px;
      left: 0;
      right: 0;
      background: rgba(8, 12, 22, 0.98);
      backdrop-filter: blur(18px);
      flex-direction: column;
      padding: 16px 24px 24px;
      border-bottom: 1px solid var(--border-light);
      gap: 8px;
    }

    .main-nav.open {
      display: flex;
    }

    .main-nav a {
      width: 100%;
      justify-content: center;
      padding: 14px;
    }

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

    .live-badge {
      display: none;
    }

    .page-banner {
      padding: 80px 0 64px;
    }

    .page-banner h1 {
      font-size: 32px;
    }

    .banner-meta {
      gap: 10px;
    }

    .meta-chip {
      padding: 8px 14px;
      font-size: 13px;
    }

    .section-head h2 {
      font-size: 28px;
    }

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

    .bracket-wrap {
      padding: 36px 22px;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 34px;
    }
  }

  @media (max-width: 520px) {
    .container {
      padding: 0 20px;
    }

    .header-actions .btn-primary {
      display: none;
    }

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

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

    .reward-card {
      flex-direction: column;
      text-align: center;
    }

    .cta-section {
      padding: 40px 24px;
    }

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

    .footer-bottom {
      flex-direction: column;
      text-align: center;
    }
  }

  @media (max-width: 360px) {
    .logo {
      font-size: 16px;
    }

    .logo-icon {
      width: 30px;
      height: 30px;
      font-size: 14px;
    }
  }

/* roulang page: article */
:root {
    --bg-body: #0b0f1e;
    --bg-deep: #070b14;
    --bg-card: #121828;
    --bg-card-hover: #1a2335;
    --bg-elevated: #1d2740;
    --accent: #7c5cff;
    --accent-2: #00d4ff;
    --accent-3: #ffb800;
    --text-main: #e5e7eb;
    --text-weak: #94a3b8;
    --text-faint: #64748b;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.16);
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --shadow-card: 0 16px 48px rgba(0, 0, 0, 0.35);
    --shadow-hover: 0 24px 60px rgba(124, 92, 255, 0.12);
    --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    --container: 1200px;
    --spacer: 90px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: 'Noto Sans SC', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-body);
    color: var(--text-main);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea, select { font: inherit; }
ul, ol { list-style: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    padding: 14px 32px;
    line-height: 1;
    transition: var(--transition);
    border: 2px solid transparent;
    font-size: 15px;
    letter-spacing: 0.5px;
}
.btn:focus-visible { outline: 3px solid rgba(0, 212, 255, 0.4); outline-offset: 2px; }
.btn-primary {
    background: linear-gradient(135deg, var(--accent), #9b6bff);
    color: #fff;
    box-shadow: 0 8px 28px rgba(124, 92, 255, 0.35);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 38px rgba(124, 92, 255, 0.45);
}
.btn-primary:active { transform: translateY(-1px); }
.btn-outline {
    border-color: var(--border-strong);
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.04);
}
.btn-outline:hover {
    border-color: var(--accent-2);
    color: var(--accent-2);
    background: rgba(0, 212, 255, 0.08);
}
.btn-sm { padding: 10px 22px; font-size: 14px; border-radius: 8px; }

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    background: rgba(124, 92, 255, 0.15);
    color: #c4b5fd;
    border: 1px solid rgba(124, 92, 255, 0.3);
    white-space: nowrap;
}
.badge i {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: #22c55e;
    display: inline-block;
    animation: pulse 2s infinite;
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6);
}
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5); }
    70% { box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
    100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(11, 15, 26, 0.85);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
    gap: 24px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 900;
    color: var(--text-main);
    letter-spacing: -0.5px;
    flex-shrink: 0;
}
.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #fff;
    font-size: 18px;
    box-shadow: 0 6px 18px rgba(124, 92, 255, 0.4);
}
.logo b { color: var(--accent-2); font-weight: 900; }
.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    justify-content: center;
}
.main-nav a {
    position: relative;
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-weak);
    transition: var(--transition);
}
.main-nav a:hover { color: var(--text-main); background: rgba(255, 255, 255, 0.04); }
.main-nav a.active { color: var(--accent-2); font-weight: 700; }
.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    border-radius: 99px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}
.live-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: #86efac;
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.2);
    padding: 6px 14px;
    border-radius: 999px;
}
.live-badge i {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: #22c55e;
    display: inline-block;
    animation: pulse 2s infinite;
}
.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    font-size: 20px;
    color: var(--text-main);
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border);
}
.nav-toggle:hover { background: rgba(255, 255, 255, 0.1); }

.article-hero {
    position: relative;
    padding: 100px 0 64px;
    background: linear-gradient(135deg, rgba(11, 15, 30, 0.94), rgba(7, 10, 20, 0.82)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    border-bottom: 1px solid var(--border);
}
.article-hero::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -80px;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(124, 92, 255, 0.16), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.article-hero::after {
    content: '';
    position: absolute;
    bottom: -40px;
    left: -60px;
    width: 260px;
    height: 260px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.article-hero .container {
    position: relative;
    z-index: 1;
}
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: var(--text-weak);
    margin-bottom: 28px;
}
.breadcrumb a { color: var(--text-weak); }
.breadcrumb a:hover { color: var(--accent-2); }
.breadcrumb .sep { color: var(--text-faint); }
.breadcrumb .current { color: var(--text-main); font-weight: 500; }
.article-title {
    font-size: clamp(28px, 4.5vw, 46px);
    line-height: 1.3;
    font-weight: 900;
    color: var(--text-main);
    letter-spacing: -1px;
    max-width: 860px;
    margin-bottom: 24px;
}
.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px 24px;
    color: var(--text-weak);
    font-size: 14px;
}
.article-meta .meta-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.article-meta .meta-item i { color: var(--accent); width: 16px; }
.article-meta .cat-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 14px;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(124, 92, 255, 0.2), rgba(0, 212, 255, 0.12));
    color: #c4b5fd;
    font-weight: 600;
    font-size: 13px;
    border: 1px solid rgba(124, 92, 255, 0.25);
}

.article-main {
    padding: 72px 0;
}
.article-main .container {
    max-width: 920px;
}
.cms-article-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: clamp(28px, 4vw, 56px);
    box-shadow: var(--shadow-card);
}
.cms-article-content p {
    margin-bottom: 1.6em;
    line-height: 1.9;
    color: rgba(229, 231, 235, 0.92);
    font-size: 16px;
}
.cms-article-content h2 {
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 800;
    color: var(--text-main);
    margin: 2em 0 0.8em;
    padding-left: 16px;
    border-left: 4px solid var(--accent);
    line-height: 1.4;
}
.cms-article-content h3 {
    font-size: clamp(18px, 2vw, 22px);
    font-weight: 700;
    color: var(--text-main);
    margin: 1.8em 0 0.6em;
}
.cms-article-content ul {
    margin: 0 0 1.6em;
    padding-left: 0;
}
.cms-article-content ul li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 10px;
    color: rgba(229, 231, 235, 0.9);
    line-height: 1.8;
}
.cms-article-content ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 8px;
    height: 8px;
    border-radius: 2px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.cms-article-content ol {
    margin: 0 0 1.6em;
    padding-left: 22px;
}
.cms-article-content ol li {
    margin-bottom: 10px;
    color: rgba(229, 231, 235, 0.9);
    line-height: 1.8;
}
.cms-article-content blockquote {
    background: rgba(124, 92, 255, 0.08);
    border-left: 4px solid var(--accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 20px 24px;
    margin: 1.8em 0;
    color: rgba(196, 181, 253, 0.9);
    font-style: italic;
}
.cms-article-content img {
    border-radius: var(--radius-md);
    margin: 1.6em 0;
    max-width: 100%;
    height: auto;
    border: 1px solid var(--border);
}
.cms-article-content a {
    color: var(--accent-2);
    border-bottom: 1px solid rgba(0, 212, 255, 0.4);
    padding-bottom: 2px;
}
.cms-article-content a:hover { color: #fff; border-bottom-color: var(--accent-2); }
.cms-article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.6em 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    font-size: 15px;
}
.cms-article-content th {
    background: rgba(124, 92, 255, 0.1);
    color: var(--text-main);
    font-weight: 700;
    padding: 12px 16px;
    text-align: left;
}
.cms-article-content td {
    padding: 10px 16px;
    border-top: 1px solid var(--border);
    color: rgba(229, 231, 235, 0.85);
}

.article-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    padding-top: 32px;
    margin-top: 40px;
    border-top: 1px solid var(--border);
}
.article-tags {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}
.article-tag {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-weak);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    transition: var(--transition);
}
.article-tag:hover {
    color: var(--accent-2);
    border-color: rgba(0, 212, 255, 0.4);
    background: rgba(0, 212, 255, 0.06);
}
.article-share {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-weak);
}
.share-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    color: var(--text-weak);
    font-size: 15px;
    transition: var(--transition);
}
.share-link:hover {
    color: #fff;
    border-color: var(--accent);
    background: rgba(124, 92, 255, 0.15);
    transform: translateY(-2px);
}

.article-not-found {
    text-align: center;
    padding: 80px 20px;
}
.article-not-found .empty-icon {
    font-size: 56px;
    color: var(--accent);
    margin-bottom: 24px;
    display: block;
}
.article-not-found h2 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 14px;
}
.article-not-found p {
    color: var(--text-weak);
    margin-bottom: 32px;
}

.article-pager {
    margin-top: 48px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.pager-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: var(--transition);
}
.pager-item:hover {
    border-color: rgba(0, 212, 255, 0.3);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}
.pager-item .pager-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    background: rgba(124, 92, 255, 0.12);
    color: var(--accent);
    flex-shrink: 0;
}
.pager-item.next { text-align: right; flex-direction: row-reverse; }
.pager-item .pager-label {
    font-size: 12px;
    color: var(--text-faint);
    margin-bottom: 4px;
}
.pager-item .pager-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.4;
}

.related-section {
    padding: var(--spacer) 0;
    background: linear-gradient(180deg, transparent, rgba(7, 10, 20, 0.6));
}
.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 44px;
}
.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent-2);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 8px;
}
.section-label i { font-size: 16px; }
.section-title {
    font-size: clamp(26px, 3vw, 38px);
    font-weight: 900;
    color: var(--text-main);
    letter-spacing: -1px;
}
.section-sub { color: var(--text-weak); font-size: 15px; }
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.related-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.related-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(124, 92, 255, 0.3);
}
.related-card .related-img {
    position: relative;
    height: 190px;
    overflow: hidden;
    background: var(--bg-elevated);
}
.related-card .related-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.related-card:hover .related-img img { transform: scale(1.05); }
.related-card .related-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(11, 15, 30, 0.7));
    pointer-events: none;
}
.related-card .related-cat {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    background: rgba(7, 10, 20, 0.7);
    backdrop-filter: blur(10px);
    color: var(--accent-2);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 999px;
    border: 1px solid rgba(0, 212, 255, 0.2);
}
.related-card .related-body {
    padding: 22px 24px 26px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.related-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.5;
    margin-bottom: 12px;
}
.related-card .related-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--text-faint);
    margin-top: auto;
}
.related-card .related-meta i { width: 14px; color: var(--accent); }
.related-card .related-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent-2);
    font-size: 14px;
    font-weight: 600;
    margin-top: 14px;
    transition: var(--transition);
}
.related-card .related-link:hover { gap: 10px; color: #fff; }

.cta-section {
    padding: 0 0 var(--spacer);
}
.cta-box {
    position: relative;
    background: linear-gradient(135deg, rgba(124, 92, 255, 0.2), rgba(0, 212, 255, 0.1)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(124, 92, 255, 0.25);
    padding: clamp(36px, 6vw, 64px);
    text-align: center;
    overflow: hidden;
}
.cta-box::before {
    content: '';
    position: absolute;
    top: -80px;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(124, 92, 255, 0.25), transparent 70%);
    border-radius: 50%;
}
.cta-box h2 {
    font-size: clamp(26px, 3.5vw, 38px);
    font-weight: 900;
    color: #fff;
    margin-bottom: 14px;
    position: relative;
    z-index: 1;
}
.cta-box p {
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto 32px;
    font-size: 16px;
    position: relative;
    z-index: 1;
}
.cta-box .btn {
    position: relative;
    z-index: 1;
    margin: 0 6px;
}

.site-footer {
    background: var(--bg-deep);
    border-top: 1px solid var(--border);
    padding: 70px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
}
.footer-brand p {
    color: var(--text-weak);
    font-size: 15px;
    line-height: 1.8;
    margin-top: 18px;
    max-width: 400px;
}
.footer-col h4 {
    color: var(--text-main);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
}
.footer-col a {
    display: block;
    color: var(--text-weak);
    font-size: 14px;
    padding: 6px 0;
    transition: var(--transition);
}
.footer-col a:hover { color: var(--accent-2); padding-left: 6px; }
.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 13px;
    color: var(--text-faint);
}

@media (max-width: 1024px) {
    .main-nav { gap: 2px; }
    .main-nav a { padding: 10px 12px; font-size: 14px; }
    .live-badge { display: none; }
    .related-grid { gap: 20px; }
}

@media (max-width: 768px) {
    .site-header { position: sticky; }
    .header-inner { height: 68px; }
    .main-nav {
        position: fixed;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--bg-deep);
        flex-direction: column;
        align-items: stretch;
        padding: 16px 24px 24px;
        gap: 4px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-120%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
        z-index: 99;
    }
    .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .main-nav a { font-size: 16px; padding: 14px 16px; }
    .main-nav a.active::after { display: none; }
    .main-nav a.active { background: rgba(0, 212, 255, 0.08); }
    .nav-toggle { display: flex; }
    .header-actions .btn-sm { display: none; }
    .article-hero { padding: 72px 0 48px; }
    .article-main { padding: 48px 0; }
    .cms-article-content { padding: 24px 20px; }
    .related-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .article-pager { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
    .container { padding: 0 18px; }
    .header-inner { height: 62px; }
    .main-nav { top: 62px; }
    .logo { font-size: 17px; }
    .logo-icon { width: 32px; height: 32px; font-size: 15px; }
    .article-title { font-size: 26px; }
    .article-meta { gap: 8px 16px; font-size: 13px; }
    .related-grid { grid-template-columns: 1fr; }
    .cta-box { padding: 36px 20px; }
    .cta-box .btn { width: 100%; margin-bottom: 12px; }
    .article-foot { flex-direction: column; align-items: flex-start; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: category3 */
*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #5b6cff;
            --primary-dark: #3f4fd8;
            --primary-light: #e8ebff;
            --secondary: #00d4aa;
            --secondary-dark: #00a386;
            --accent: #ffbc3b;
            --bg-deep: #0b0e1a;
            --bg-dark: #12162a;
            --bg-card: #1a1f35;
            --bg-card-hover: #202642;
            --bg-light: #f5f6fe;
            --bg-white: #ffffff;
            --text-primary: #1d2130;
            --text-body: #3d4356;
            --text-subtle: #6b7280;
            --text-light: #9aa3b8;
            --border: #e5e8f2;
            --border-dark: #2a3050;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(13, 18, 50, 0.05);
            --shadow: 0 8px 30px rgba(13, 18, 50, 0.08);
            --shadow-lg: 0 20px 50px rgba(13, 18, 50, 0.14);
            --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: #f0f1f8;
            color: var(--text-body);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
        }
        .container {
            width: 100%;
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(90, 100, 130, 0.14);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: 72px;
            display: flex;
            align-items: center;
            box-shadow: 0 1px 20px rgba(10, 15, 40, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
            flex-wrap: wrap;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            letter-spacing: 0.2px;
            white-space: nowrap;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary) 0%, #7b2ff7 100%);
            color: #fff;
            font-size: 16px;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            box-shadow: 0 4px 14px rgba(91, 108, 255, 0.28);
        }
        .logo b {
            color: var(--primary);
            font-weight: 700;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .main-nav a {
            color: var(--text-body);
            font-size: 15px;
            font-weight: 500;
            padding: 9px 18px;
            border-radius: 999px;
            transition: background 0.25s ease, color 0.25s ease, transform 0.2s ease;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 6px 18px rgba(91, 108, 255, 0.3);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .live-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--secondary-dark);
            background: rgba(0, 212, 170, 0.1);
            padding: 6px 14px;
            border-radius: 999px;
            border: 1px solid rgba(0, 212, 170, 0.3);
        }
        .live-badge i {
            display: inline-block;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--secondary);
            box-shadow: 0 0 0 0 rgba(0, 212, 170, 0.6);
            animation: pulse-dot 1.8s infinite;
        }
        @keyframes pulse-dot {
            0% {
                box-shadow: 0 0 0 0 rgba(0, 212, 170, 0.55);
            }
            70% {
                box-shadow: 0 0 0 7px rgba(0, 212, 170, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(0, 212, 170, 0);
            }
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: 999px;
            padding: 12px 26px;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            line-height: 1.4;
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 24px rgba(91, 108, 255, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(91, 108, 255, 0.38);
        }
        .btn-secondary {
            background: var(--secondary);
            color: #fff;
            box-shadow: 0 8px 24px rgba(0, 212, 170, 0.25);
        }
        .btn-secondary:hover {
            background: var(--secondary-dark);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.4);
            color: #fff;
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-2px);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 26px;
            color: var(--text-primary);
            cursor: pointer;
            padding: 6px;
            border-radius: 8px;
            line-height: 1;
        }
        @media (max-width: 920px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px;
                border-radius: 0 0 20px 20px;
                gap: 8px;
                z-index: 1001;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 14px 16px;
                border-radius: 12px;
                font-size: 16px;
            }
            .nav-toggle {
                display: inline-block;
            }
            .live-badge {
                display: none;
            }
        }
        @media (max-width: 560px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .logo {
                font-size: 17px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .btn-sm {
                padding: 7px 14px;
                font-size: 13px;
            }
        }

        /* ===== 内页Banner ===== */
        .page-banner {
            position: relative;
            background: linear-gradient(120deg, #101430 0%, #1c2340 60%, #242c52 100%);
            min-height: 300px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .page-banner .bg-img {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.28;
        }
        .page-banner .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 14, 26, 0.85) 0%, rgba(11, 14, 26, 0.65) 50%, rgba(11, 14, 26, 0.3) 100%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            padding-top: 50px;
            padding-bottom: 50px;
        }
        .banner-subtitle {
            color: var(--accent);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 2px;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .banner-subtitle::before {
            content: "";
            width: 30px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .page-banner h1 {
            color: #fff;
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .page-banner p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 17px;
            max-width: 680px;
            margin-bottom: 24px;
        }
        .banner-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .page-banner {
                min-height: 260px;
            }
            .page-banner h1 {
                font-size: 32px;
            }
            .page-banner p {
                font-size: 15px;
            }
        }

        /* ===== 内容区 ===== */
        .section-page {
            padding: 70px 0 40px;
        }
        .section {
            padding: 60px 0;
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 36px;
            flex-wrap: wrap;
        }
        .section-header h2 {
            font-size: 30px;
            color: var(--text-primary);
            font-weight: 700;
            position: relative;
            padding-bottom: 12px;
        }
        .section-header h2::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 46px;
            height: 4px;
            border-radius: 4px;
            background: var(--primary);
        }
        .section-header .sub-text {
            color: var(--text-subtle);
            font-size: 15px;
            max-width: 520px;
        }

        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .strategy-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.35s ease, border-color 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .strategy-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(91, 108, 255, 0.3);
        }
        .strategy-card .card-cover {
            height: 190px;
            overflow: hidden;
            background: #ddd;
            position: relative;
        }
        .strategy-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .strategy-card:hover .card-cover img {
            transform: scale(1.05);
        }
        .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(11, 14, 26, 0.75);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 12px;
            padding: 5px 13px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .card-tag.hot {
            background: linear-gradient(135deg, #ff6b6b, #ff3d68);
            border-color: transparent;
        }
        .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-body h3 {
            font-size: 18px;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.5;
        }
        .card-body h3 a {
            color: inherit;
        }
        .card-body h3 a:hover {
            color: var(--primary);
        }
        .card-body p {
            color: var(--text-subtle);
            font-size: 14px;
            margin-bottom: 16px;
            flex: 1;
        }
        .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border);
            padding-top: 14px;
            font-size: 13px;
            color: var(--text-light);
        }
        .card-meta .author {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .card-meta .author i {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 11px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-style: normal;
        }
        .card-meta .views {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        @media (max-width: 1024px) {
            .strategy-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 620px) {
            .strategy-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 24px;
            }
        }

        /* ===== 流程/步骤 ===== */
        .steps-section {
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }
        .step-card {
            background: var(--bg-light);
            border-radius: var(--radius);
            padding: 30px 24px;
            border: 1px solid var(--border);
            position: relative;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .step-number {
            font-size: 32px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), #8c6dff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 12px;
        }
        .step-card h4 {
            font-size: 17px;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-subtle);
        }
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 560px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        /* ===== 热门话题 ===== */
        .topic-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .topic-item {
            background: var(--bg-light);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-left: 4px solid var(--primary);
            transition: background 0.3s ease, transform 0.3s ease;
        }
        .topic-item:hover {
            background: var(--primary-light);
            transform: translateX(4px);
        }
        .topic-item a {
            font-size: 15px;
            color: var(--text-primary);
            font-weight: 500;
        }
        .topic-item .topic-count {
            font-size: 13px;
            color: var(--primary);
            background: rgba(91, 108, 255, 0.1);
            padding: 4px 12px;
            border-radius: 999px;
            white-space: nowrap;
        }
        @media (max-width: 768px) {
            .topic-list {
                grid-template-columns: 1fr;
            }
            .topic-item {
                padding: 16px 18px;
            }
        }

        /* ===== 高手分享/大咖栏 ===== */
        .expert-section {
            background: var(--bg-deep);
            color: #fff;
        }
        .expert-section .section-header h2 {
            color: #fff;
        }
        .expert-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .expert-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 28px;
            backdrop-filter: blur(10px);
            transition: background 0.3s ease, transform 0.3s ease;
        }
        .expert-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }
        .expert-card h4 {
            font-size: 18px;
            color: #fff;
            margin-bottom: 10px;
        }
        .expert-card h4 span {
            color: var(--accent);
            font-size: 13px;
            margin-left: 8px;
            font-weight: 500;
        }
        .expert-card p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
        }
        @media (max-width: 768px) {
            .expert-grid {
                grid-template-columns: 1fr;
            }
            .expert-section {
                padding: 50px 0;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-white);
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 16px;
            overflow: hidden;
            background: var(--bg-light);
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .faq-item summary {
            padding: 22px 26px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background 0.2s ease;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: "+";
            font-size: 22px;
            font-weight: 400;
            color: var(--primary);
            transition: transform 0.3s ease;
            margin-left: 16px;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-item[open] {
            border-color: rgba(91, 108, 255, 0.3);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .answer {
            padding: 0 26px 22px;
            color: var(--text-body);
            font-size: 15px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(120deg, rgba(11, 14, 26, 0.92), rgba(18, 22, 42, 0.88)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            text-align: center;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 32px;
            margin-bottom: 14px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 30px;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0d1020;
            padding: 70px 0 30px;
            color: rgba(255, 255, 255, 0.6);
        }
        .site-footer .logo {
            color: #fff;
            margin-bottom: 18px;
        }
        .site-footer .logo b {
            color: var(--primary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 50px;
            margin-bottom: 50px;
        }
        .footer-brand p {
            font-size: 14px;
            max-width: 360px;
            margin-top: 16px;
            line-height: 1.8;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .footer-col {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-col a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            transition: color 0.25s ease, padding-left 0.25s ease;
        }
        .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        .pagination {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-top: 50px;
            flex-wrap: wrap;
        }
        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 42px;
            height: 42px;
            border-radius: 10px;
            padding: 0 14px;
            font-size: 14px;
            border: 1px solid var(--border);
            background: var(--bg-white);
            color: var(--text-body);
            transition: all 0.25s ease;
        }
        .pagination a:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }
        .pagination .current {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

/* roulang page: category2 */
/* ==============================================
   设计变量
============================================== */
:root {
  --bg-page: #0b0f1a;
  --bg-section: #0f1524;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 229, 255, 0.35);
  --text-main: #e8ecf4;
  --text-secondary: #9aa4b8;
  --text-muted: #6b7688;
  --primary: #00e5ff;
  --secondary: #a855f7;
  --primary-glow: rgba(0, 229, 255, 0.18);
  --secondary-glow: rgba(168, 85, 247, 0.18);
  --gradient: linear-gradient(135deg, #00e5ff, #a855f7);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 12px 42px rgba(0, 0, 0, 0.5);
  --transition: 0.3s ease;
  --container: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-page);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

input {
  font-family: inherit;
}

ul, ol {
  list-style: none;
}

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

/* ==============================================
   按钮
============================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient);
  color: #0b0f1a;
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 40px rgba(0, 229, 255, 0.45);
  color: #0b0f1a;
}

.btn-outline {
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.04);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-glow);
  transform: translateY(-2px);
}

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

.btn-lg {
  padding: 16px 40px;
  font-size: 16px;
}

/* ==============================================
   顶部导航
============================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 15, 26, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--gradient);
  color: #0b0f1a;
  font-size: 18px;
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.3);
}

.logo b {
  font-weight: 700;
  color: var(--primary);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav a {
  position: relative;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: all var(--transition);
}

.main-nav a:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.main-nav a.active {
  color: var(--primary);
  background: rgba(0, 229, 255, 0.08);
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: var(--gradient);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.25);
}

.live-badge i {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  animation: pulse 1.6s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 229, 255, 0.5); }
  50% { box-shadow: 0 0 0 6px rgba(0, 229, 255, 0); }
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  font-size: 20px;
  align-items: center;
  justify-content: center;
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.04);
  line-height: 1;
}

/* ==============================================
   页面 Hero
============================================== */
.page-hero {
  position: relative;
  padding: 120px 0 110px;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 15, 26, 0.72) 30%, rgba(11, 15, 26, 0.94) 100%);
}

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

.hero-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  padding: 8px 18px;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 14px;
  color: var(--text-secondary);
  backdrop-filter: blur(8px);
}

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

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

.hero-breadcrumb span {
  color: var(--text-muted);
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 30%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 660px;
  margin-left: auto;
  margin-right: auto;
}

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

/* ==============================================
   通用区块
============================================== */
.section {
  padding: 100px 0;
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--primary);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.2);
  margin-bottom: 16px;
}

.section-title {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ==============================================
   学习路径
============================================== */
.path-section {
  position: relative;
  background: var(--bg-section);
}

.path-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.4), transparent);
}

.path-steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 860px;
  margin: 0 auto;
}

.path-step {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 28px 32px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
  position: relative;
}

.path-step:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  box-shadow: var(--shadow);
  transform: translateX(8px);
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--gradient);
  color: #0b0f1a;
  font-size: 20px;
  font-weight: 800;
  flex-shrink: 0;
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
}

.step-content {
  flex: 1;
}

.step-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.step-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ==============================================
   教学体系分类
============================================== */
.category-section {
  background: var(--bg-page);
}

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

.category-card {
  position: relative;
  padding: 36px 30px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity var(--transition);
}

.category-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-6px);
}

.category-card:hover::before {
  opacity: 1;
}

.category-num {
  font-size: 42px;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 229, 255, 0.35);
  line-height: 1;
  margin-bottom: 20px;
  font-family: "SF Mono", "Consolas", monospace;
  transition: all var(--transition);
}

.category-card:hover .category-num {
  -webkit-text-stroke: 1px var(--primary);
}

.category-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.category-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 20px;
}

.category-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}

.category-link::after {
  content: '→';
  transition: transform var(--transition);
}

.category-link:hover::after {
  transform: translateX(4px);
}

/* ==============================================
   精选教程推荐
============================================== */
.tutorial-section {
  background: var(--bg-section);
}

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

.tutorial-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all var(--transition);
}

.tutorial-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-6px);
  border-color: var(--border-hover);
}

.tutorial-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.tutorial-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.tutorial-card:hover .tutorial-cover img {
  transform: scale(1.06);
}

.tutorial-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 15, 26, 0) 40%, rgba(11, 15, 26, 0.5));
}

.tutorial-info {
  padding: 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.tutorial-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.2);
}

.tag.tag-purple {
  color: var(--secondary);
  background: rgba(168, 85, 247, 0.08);
  border-color: rgba(168, 85, 247, 0.25);
}

.tutorial-title {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
  transition: color var(--transition);
}

.tutorial-card:hover .tutorial-title {
  color: var(--primary);
}

.tutorial-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  flex: 1;
}

.tutorial-meta {
  padding-top: 16px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* ==============================================
   数据统计
============================================== */
.stats-section {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(168, 85, 247, 0.08)), var(--bg-page);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}

.stat-number {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.1;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 15px;
  color: var(--text-secondary);
}

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

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

.faq-item:hover {
  border-color: rgba(0, 229, 255, 0.25);
}

.faq-item details {
  padding: 0;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 28px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: color var(--transition);
}

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

.faq-item summary::after {
  content: '+';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  font-size: 20px;
  font-weight: 400;
  color: var(--text-secondary);
  transition: all var(--transition);
  flex-shrink: 0;
}

.faq-item details[open] summary::after {
  transform: rotate(45deg);
  background: var(--gradient);
  color: #0b0f1a;
  border-color: transparent;
}

.faq-item details[open] summary {
  color: var(--primary);
}

.faq-body {
  padding: 0 28px 24px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.faq-body p:last-child {
  margin-bottom: 0;
}

/* ==============================================
   CTA 区块
============================================== */
.cta-section {
  position: relative;
  padding: 100px 0;
  background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 15, 26, 0.88), rgba(11, 15, 26, 0.78));
}

.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 18px;
}

.cta-text {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
}

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

/* ==============================================
   页脚
============================================== */
.site-footer {
  background: #080c15;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding: 72px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 48px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 360px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

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

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

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

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

/* ==============================================
   响应式断点
============================================== */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 46px;
  }

  .section {
    padding: 80px 0;
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .footer-grid {
    gap: 40px;
  }
}

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

  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(11, 15, 26, 0.98);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px 20px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    backdrop-filter: blur(20px);
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 14px 16px;
    font-size: 16px;
  }

  .main-nav a.active::after {
    left: 16px;
    right: auto;
    width: 28px;
    bottom: auto;
  }

  .nav-toggle {
    display: flex;
  }

  .live-badge {
    display: none;
  }

  .page-hero {
    padding: 80px 0 70px;
  }

  .hero-title {
    font-size: 36px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 30px;
  }

  .section-head {
    margin-bottom: 40px;
  }

  .path-step {
    flex-direction: column;
    gap: 16px;
    padding: 24px;
  }

  .step-number {
    width: 44px;
    height: 44px;
    font-size: 18px;
  }

  .path-step:hover {
    transform: translateY(-4px);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    margin-bottom: 36px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .cta-title {
    font-size: 30px;
  }
}

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

  .hero-title {
    font-size: 30px;
  }

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

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

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

  .section-title {
    font-size: 26px;
  }

  .path-step {
    padding: 20px;
  }
}