/* roulang page: index */
:root{
  --primary:#e9402b;
  --primary-dark:#c22f1f;
  --primary-soft:#fff1ee;
  --accent:#f5a623;
  --accent-soft:#fff7e8;
  --ink:#13202e;
  --ink-2:#263849;
  --muted:#6b7b8d;
  --line:#e6ebf0;
  --bg:#f5f7fa;
  --card:#ffffff;
  --dark:#0d1926;
  --dark-2:#142434;
  --radius:20px;
  --radius-sm:12px;
  --radius-lg:28px;
  --shadow:0 6px 24px rgba(13,25,38,.07);
  --shadow-lg:0 18px 46px rgba(13,25,38,.13);
  --transition:.3s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{line-height:1.25;margin:0 0 12px;color:var(--ink)}
p{margin:0 0 16px}
ul{list-style:none;margin:0;padding:0}
a:focus-visible,button:focus-visible{outline:3px solid rgba(233,64,43,.4);outline-offset:2px;border-radius:8px}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important}
}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:84px 0}
.section-alt{background:var(--bg)}
section[id],.section[id]{scroll-margin-top:120px}
.grid-margin-x{margin-left:-.75rem;margin-right:-.75rem}
.grid-margin-x>.cell{padding:0 .75rem}

.section-head{max-width:680px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-tag{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--primary-soft);color:var(--primary-dark);
  font-size:13px;font-weight:700;letter-spacing:.04em;
  padding:7px 16px;border-radius:999px;margin-bottom:14px;
}
.section-head h2{font-size:32px;font-weight:800;letter-spacing:-.01em}
.section-head p{color:var(--muted);font-size:16px;margin:0}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-weight:700;font-size:15px;line-height:1;
  padding:14px 28px;border-radius:999px;border:2px solid transparent;
  transition:var(--transition);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;box-shadow:0 10px 26px rgba(233,64,43,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(233,64,43,.36)}
.btn-ghost{
  border-color:rgba(255,255,255,.5);color:#fff;
  background:rgba(255,255,255,.06);backdrop-filter:blur(4px);
}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:#fff}
.btn-dark{background:var(--ink);color:#fff}
.btn-sm{padding:10px 20px;font-size:14px}

.site-header{
  position:sticky;top:0;z-index:100;
  padding:16px 12px 0;
}
.dock-nav{
  max-width:1180px;margin:0 auto;
  display:flex;align-items:center;gap:18px;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.7);
  border-radius:999px;
  padding:10px 14px 10px 20px;
  box-shadow:0 12px 40px rgba(13,25,38,.10);
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:800;font-size:17px;color:var(--ink);white-space:nowrap;
}
.brand-icon{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;font-size:16px;
  box-shadow:0 6px 16px rgba(233,64,43,.25);
}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  padding:9px 18px;border-radius:999px;
  font-weight:600;font-size:15px;color:var(--ink-2);
  transition:var(--transition);
}
.nav-link:hover{background:var(--bg);color:var(--primary)}
.nav-link.active{background:var(--primary-soft);color:var(--primary-dark)}
.nav-cta{margin-left:6px}
.nav-toggle{
  display:none;flex-direction:column;gap:5px;
  background:transparent;border:0;padding:10px;
}
.nav-toggle .bar{width:20px;height:2px;background:var(--ink);border-radius:4px;transition:var(--transition)}
.nav-toggle.open .bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open .bar:nth-child(2){opacity:0}
.nav-toggle.open .bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{
  position:absolute;top:calc(100% - 2px);left:50%;
  transform:translateX(-50%) translateY(-10px);
  width:min(600px,calc(100% - 24px));
  background:rgba(255,255,255,.97);
  border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--shadow-lg);padding:14px;
  display:flex;flex-direction:column;gap:4px;
  opacity:0;visibility:hidden;transition:var(--transition);
}
.mobile-menu.open{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mobile-menu a{
  padding:12px 16px;border-radius:14px;font-weight:600;color:var(--ink-2);
  transition:var(--transition);
}
.mobile-menu a:hover,.mobile-menu a.active{background:var(--primary-soft);color:var(--primary-dark)}
.mobile-menu .mobile-cta{
  margin-top:6px;text-align:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;
}

.hero{
  position:relative;max-width:1280px;margin:10px auto 0;
  min-height:620px;border-radius:var(--radius-lg);overflow:hidden;
  display:flex;align-items:center;
  background:linear-gradient(100deg,rgba(10,18,30,.94) 0%,rgba(13,25,38,.72) 50%,rgba(13,25,38,.36) 100%),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.hero-inner{padding:72px 56px;max-width:680px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:700;color:#ffd9d3;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  padding:8px 16px;border-radius:999px;margin-bottom:22px;
}
.hero-eyebrow i{color:var(--accent)}
.hero h1{color:#fff;font-size:46px;font-weight:800;letter-spacing:-.02em;margin-bottom:18px}
.hero-sub{color:rgba(255,255,255,.78);font-size:17px;max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:46px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:40px;
  border-top:1px solid rgba(255,255,255,.18);padding-top:28px;
}
.stat{color:#fff}
.stat strong{display:block;font-size:28px;font-weight:800;line-height:1.2}
.stat span{font-size:13px;color:rgba(255,255,255,.6)}

.ticker{margin-top:22px;position:relative;z-index:2}
.ticker-inner{
  display:flex;align-items:center;gap:20px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow);padding:12px 20px;overflow:hidden;
}
.ticker-label{
  display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;
  background:var(--primary);color:#fff;font-size:13px;font-weight:700;
  padding:6px 14px;border-radius:999px;white-space:nowrap;
}
.ticker-track{flex:1;overflow:hidden;display:flex}
.ticker-group{
  display:inline-flex;align-items:center;gap:42px;flex:0 0 auto;
  white-space:nowrap;padding-right:42px;
  animation:tickerMove 30s linear infinite;will-change:transform;
}
.ticker-group .item{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:var(--ink-2);
}
.ticker-group .item .dot{width:5px;height:5px;border-radius:50%;background:var(--primary)}
@keyframes tickerMove{from{transform:translateX(0)}to{transform:translateX(-100%)}}

.features-grid{margin-top:46px}
.feature-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  transition:var(--transition);
}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-media{aspect-ratio:16/10;overflow:hidden;background:var(--dark-2)}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.feature-card:hover .feature-media img{transform:scale(1.05)}
.feature-body{padding:22px 22px 26px;flex:1;display:flex;flex-direction:column}
.feature-icon{
  width:44px;height:44px;border-radius:13px;
  background:var(--primary-soft);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:18px;margin-bottom:14px;
}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.75}

.portal-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:24px;margin-top:46px}
.portal-main{
  position:relative;border-radius:var(--radius);overflow:hidden;min-height:360px;
  display:flex;align-items:flex-end;padding:36px;
  background:linear-gradient(180deg,rgba(13,25,38,0) 30%,rgba(13,25,38,.88) 100%),url('/assets/images/coverpic/cover-5.png') center/cover no-repeat;
  transition:var(--transition);
}
.portal-main:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.portal-main .content{color:#fff;position:relative;z-index:1}
.portal-main .badge{background:var(--accent);color:#1b1206}
.portal-main h3{color:#fff;font-size:30px;font-weight:800;margin:14px 0 8px}
.portal-main p{color:rgba(255,255,255,.78);max-width:420px;margin-bottom:18px}
.portal-link{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:700;font-size:15px;color:#fff;
  transition:var(--transition);
}
.portal-link i{transition:transform var(--transition)}
.portal-link:hover i{transform:translateX(5px)}
.portal-side{display:flex;flex-direction:column;gap:24px}
.portal-card{
  flex:1;display:flex;align-items:center;gap:18px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;transition:var(--transition);
}
.portal-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.portal-icon{
  width:52px;height:52px;flex:0 0 auto;border-radius:16px;
  display:flex;align-items:center;justify-content:center;font-size:20px;
}
.portal-icon.red{background:var(--primary-soft);color:var(--primary)}
.portal-icon.gold{background:var(--accent-soft);color:#c87f12}
.portal-card h4{font-size:17px;font-weight:700;margin:0 0 4px}
.portal-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.6}

.posts-grid{margin-top:46px}
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  transition:var(--transition);
}
.post-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.post-cover{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--dark-2)}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.post-card:hover .post-cover img{transform:scale(1.04)}
.post-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.post-meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;gap:10px}
.post-meta time{font-size:13px;color:var(--muted)}
.badge{
  display:inline-flex;align-items:center;flex:0 0 auto;
  background:var(--primary-soft);color:var(--primary-dark);
  font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px;
}
.post-card h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:10px}
.post-card h3 a{transition:color var(--transition)}
.post-card h3 a:hover{color:var(--primary)}
.post-card .post-body>p{
  font-size:14px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
  overflow:hidden;margin-bottom:16px;
}
.post-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:700;color:var(--primary);
}
.post-link i{transition:transform var(--transition)}
.post-link:hover i{transform:translateX(4px)}
.empty-tip{
  grid-column:1/-1;text-align:center;padding:48px 20px;
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius);
  color:var(--muted);font-size:15px;
}

.stats-section{
  background:linear-gradient(rgba(10,18,30,.92),rgba(10,18,30,.92)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  background-attachment:fixed;color:#fff;
}
.stats-section .section-head h2{color:#fff}
.stats-section .section-head p{color:rgba(255,255,255,.6)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:50px}
.stat-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius);padding:32px 20px;text-align:center;
  transition:var(--transition);
}
.stat-card:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}
.stat-card strong{
  display:block;font-size:38px;font-weight:800;line-height:1.2;
  background:linear-gradient(135deg,#ffb4a6,var(--accent));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.stat-card span{color:rgba(255,255,255,.65);font-size:14px;font-weight:600}

.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:46px}
.process-step{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:30px 24px;transition:var(--transition);
}
.process-step:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.step-num{
  width:52px;height:52px;border-radius:16px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;font-weight:800;font-size:20px;
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
  box-shadow:0 10px 24px rgba(233,64,43,.24);
}
.process-step h3{font-size:18px;font-weight:700;margin-bottom:8px}
.process-step p{font-size:14px;color:var(--muted);margin:0}

.faq-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:50px;align-items:start}
.faq-intro h2{font-size:32px;font-weight:800}
.faq-intro p{color:var(--muted);margin-top:14px}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:var(--transition)}
.faq-item.active{border-color:var(--primary);box-shadow:var(--shadow)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;padding:20px 22px;
  font-size:16px;font-weight:700;color:var(--ink);text-align:left;
}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:9px;
  background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;transition:transform var(--transition);
}
.faq-item.active .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.active .faq-a{max-height:320px}
.faq-a p{padding:0 22px 20px;font-size:14px;color:var(--muted);margin:0}

.cta-section{padding:40px 0 90px}
.cta-box{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:linear-gradient(105deg,rgba(160,32,20,.92),rgba(13,25,38,.88)),url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  padding:72px 48px;text-align:center;color:#fff;
}
.cta-box h2{color:#fff;font-size:34px;font-weight:800;margin-bottom:12px}
.cta-box p{color:rgba(255,255,255,.78);max-width:560px;margin:0 auto 26px}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}
.cta-note{margin-top:22px;font-size:13px;color:rgba(255,255,255,.55)}

.site-footer{background:#0b141d;color:#9aa8b6;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:40px}
.footer-brand .brand{color:#fff;margin-bottom:14px}
.footer-brand p{font-size:14px;color:#7f8fa0;line-height:1.8;max-width:360px;margin:0}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:#7f8fa0;padding:5px 0;transition:color var(--transition)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:#66788a;flex-wrap:wrap;
}
.footer-bottom .domain{color:#8a9aa9}

@media (max-width:1024px){
  .hero{min-height:560px}
  .hero h1{font-size:38px}
  .hero-inner{padding:60px 40px}
  .portal-grid{grid-template-columns:1fr 1fr}
  .portal-side{display:grid;grid-template-columns:1fr 1fr}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .hero-stats{gap:28px}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .dock-nav{justify-content:space-between}
  .hero{min-height:520px;border-radius:20px;margin-top:6px}
  .hero-inner{padding:48px 24px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:15px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-stats{gap:20px;padding-top:22px}
  .stat{flex:1 1 40%}
  .ticker-inner{flex-direction:column;align-items:flex-start;gap:10px}
  .portal-grid{grid-template-columns:1fr}
  .portal-side{display:grid;grid-template-columns:1fr 1fr}
  .stats-section{background-attachment:scroll}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section-head h2{font-size:26px}
  .cta-box{padding:52px 24px}
  .cta-box h2{font-size:26px}
}
@media (max-width:520px){
  .brand-text{font-size:15px}
  .hero h1{font-size:26px}
  .hero-stats{flex-direction:column;gap:14px}
  .portal-side{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr;gap:14px}
  .stat-card{padding:22px 14px}
  .stat-card strong{font-size:30px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;text-align:center}
  .section{padding:52px 0}
  .cta-actions .btn{width:100%}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
    :root {
      --primary: #2563EB;
      --primary-dark: #1A4FBD;
      --primary-light: #EEF4FF;
      --accent: #F59E0B;
      --accent-light: #FEF3C7;
      --bg: #F8FAFC;
      --white: #FFFFFF;
      --text: #1E293B;
      --text-light: #64748B;
      --text-muted: #94A3B8;
      --border: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --shadow-sm: 0 2px 8px rgba(30,41,59,0.06);
      --shadow-md: 0 8px 24px rgba(30,41,59,0.08);
      --shadow-lg: 0 16px 48px rgba(30,41,59,0.12);
      --space-xs: 8px;
      --space-sm: 16px;
      --space-md: 32px;
      --space-lg: 64px;
      --space-xl: 96px;
      --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    }

    /* ===== 基础 Reset ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-size: 16px; }
    body {
      font-family: var(--font-main);
      background: var(--bg);
      color: var(--text);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; transition: color .2s ease; }
    a:hover { color: var(--primary); }
    button, input { font-family: inherit; font-size: inherit; border: none; background: none; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5 { line-height: 1.3; font-weight: 700; color: var(--text); }

    /* ===== 容器 ===== */
    .site-container {
      max-width: 1200px;
      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-weight: 600;
      font-size: 15px;
      cursor: pointer;
      transition: all .25s ease;
      line-height: 1.4;
      letter-spacing: 0.02em;
      white-space: nowrap;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 4px 16px rgba(37,99,235,0.3);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(37,99,235,0.4);
    }
    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 2px solid var(--primary);
    }
    .btn-outline:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-2px);
    }
    .btn-light {
      background: #fff;
      color: var(--text);
      box-shadow: var(--shadow-md);
    }
    .btn-light:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-lg);
    }
    .btn:focus-visible {
      outline: 3px solid rgba(37,99,235,0.4);
      outline-offset: 2px;
    }
    .btn-sm { padding: 8px 20px; font-size: 14px; }
    .btn-lg { padding: 16px 40px; font-size: 17px; }

    /* ===== 顶部导航 ===== */
    .site-header {
      position: sticky;
      top: 16px;
      z-index: 100;
      padding: 0 20px;
      pointer-events: none;
    }
    .dock-nav {
      pointer-events: auto;
      max-width: 1200px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-radius: 56px;
      padding: 12px 24px;
      box-shadow: var(--shadow-md);
      border: 1px solid rgba(255,255,255,0.7);
      gap: 16px;
      transition: box-shadow .3s;
    }
    .dock-nav:hover { box-shadow: var(--shadow-lg); }
    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .brand-icon {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), #38BDF8);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 18px;
      box-shadow: 0 4px 12px rgba(37,99,235,0.3);
    }
    .brand-text {
      font-size: 19px;
      font-weight: 800;
      color: var(--text);
      letter-spacing: 0.01em;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      margin: 0 auto;
    }
    .nav-link {
      padding: 8px 18px;
      border-radius: 40px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-light);
      transition: all .25s ease;
      position: relative;
    }
    .nav-link:hover { color: var(--primary); background: var(--primary-light); }
    .nav-link.active { color: var(--primary); background: var(--primary-light); font-weight: 600; }
    .nav-link:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
    .nav-cta { margin-left: 8px; flex-shrink: 0; }
    .nav-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary-light);
      align-items: center;
      justify-content: center;
      cursor: pointer;
    }
    .nav-toggle .bar {
      display: block;
      width: 20px;
      height: 2.5px;
      background: var(--primary);
      border-radius: 4px;
      transition: all .3s ease;
    }
    .nav-toggle[aria-expanded="true"] .bar:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
    .nav-toggle[aria-expanded="true"] .bar:nth-child(2) { opacity: 0; }
    .nav-toggle[aria-expanded="true"] .bar:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

    /* ===== 页面 Banner ===== */
    .page-banner {
      position: relative;
      padding: 140px 0 100px;
      background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      text-align: center;
    }
    .page-banner::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(15,23,42,0.75) 0%, rgba(15,23,42,0.55) 100%);
    }
    .page-banner .site-container { position: relative; z-index: 2; }
    .breadcrumb {
      display: flex;
      justify-content: center;
      gap: 8px;
      font-size: 14px;
      color: rgba(255,255,255,0.75);
      margin-bottom: 20px;
    }
    .breadcrumb a { color: rgba(255,255,255,0.85); }
    .breadcrumb a:hover { color: #fff; }
    .breadcrumb .sep { color: rgba(255,255,255,0.4); }
    .page-banner h1 {
      font-size: 48px;
      color: #fff;
      margin-bottom: 16px;
      letter-spacing: 0.02em;
      text-shadow: 0 4px 20px rgba(0,0,0,0.3);
    }
    .page-banner .banner-desc {
      font-size: 18px;
      color: rgba(255,255,255,0.8);
      max-width: 660px;
      margin: 0 auto 32px;
      line-height: 1.7;
    }
    .banner-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

    /* ===== 通用板块 ===== */
    .section { padding: var(--space-xl) 0; }
    .section-alt { background: var(--white); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto var(--space-lg);
    }
    .section-tag {
      display: inline-block;
      padding: 6px 16px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 40px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.06em;
      margin-bottom: 16px;
    }
    .section-title { font-size: 34px; margin-bottom: 12px; letter-spacing: -0.01em; }
    .section-subtitle { font-size: 16px; color: var(--text-light); line-height: 1.7; }

    /* ===== 分类简介 ===== */
    .cat-intro { padding: var(--space-xl) 0; }
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 64px;
      align-items: center;
    }
    .intro-content .intro-label {
      display: inline-block;
      padding: 6px 16px;
      background: var(--accent-light);
      color: #B45309;
      border-radius: 40px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .intro-content h2 { font-size: 32px; margin-bottom: 20px; line-height: 1.35; }
    .intro-content p { color: var(--text-light); font-size: 15px; margin-bottom: 16px; line-height: 1.8; }
    .intro-points { margin-top: 24px; display: grid; gap: 14px; }
    .intro-point { display: flex; gap: 12px; align-items: flex-start; }
    .intro-point i {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
      flex-shrink: 0;
      margin-top: 3px;
    }
    .intro-point span { font-size: 15px; color: var(--text-light); line-height: 1.65; }
    .intro-media {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      position: relative;
    }
    .intro-media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }
    .intro-media::after {
      content: '';
      position: absolute;
      inset: 0;
      border: 1px solid rgba(255,255,255,0.2);
      border-radius: inherit;
      pointer-events: none;
    }

    /* ===== 资讯卡片 ===== */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: var(--white);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all .35s ease;
      border: 1px solid var(--border);
      display: flex;
      flex-direction: column;
    }
    .news-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: transparent;
    }
    .news-card-image {
      position: relative;
      overflow: hidden;
      aspect-ratio: 16/10;
    }
    .news-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
    .news-card:hover .news-card-image img { transform: scale(1.05); }
    .news-tag {
      position: absolute;
      top: 16px;
      left: 16px;
      padding: 4px 14px;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(6px);
      border-radius: 40px;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
    }
    .news-content { padding: 24px; display: flex; flex-direction: column; flex: 1; }
    .news-title { font-size: 18px; margin-bottom: 10px; line-height: 1.4; }
    .news-title a { color: var(--text); }
    .news-title a:hover { color: var(--primary); }
    .news-excerpt {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.7;
      margin-bottom: 18px;
      flex: 1;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .news-meta {
      display: flex;
      align-items: center;
      gap: 16px;
      font-size: 13px;
      color: var(--text-muted);
      border-top: 1px solid var(--border);
      padding-top: 14px;
    }
    .news-meta i { margin-right: 4px; }

    /* ===== 热门排行 ===== */
    .rank-section { background: var(--white); }
    .rank-list { max-width: 860px; margin: 0 auto; display: grid; gap: 14px; }
    .rank-card {
      display: flex;
      align-items: center;
      gap: 20px;
      padding: 18px 24px;
      background: var(--bg);
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      transition: all .3s ease;
    }
    .rank-card:hover { background: var(--primary-light); border-color: rgba(37,99,235,0.3); transform: translateX(4px); }
    .rank-number {
      font-size: 24px;
      font-weight: 800;
      color: var(--text-muted);
      width: 48px;
      text-align: center;
      flex-shrink: 0;
    }
    .rank-card:nth-child(1) .rank-number { color: var(--accent); }
    .rank-card:nth-child(2) .rank-number { color: var(--primary); }
    .rank-card:nth-child(3) .rank-number { color: #10B981; }
    .rank-info { flex: 1; }
    .rank-info h3 { font-size: 17px; margin-bottom: 4px; }
    .rank-info p { font-size: 13px; color: var(--text-light); }
    .rank-tag {
      padding: 4px 14px;
      background: var(--white);
      border-radius: 40px;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .rank-hot {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      color: var(--accent);
      font-weight: 600;
      flex-shrink: 0;
    }
    .rank-hot .score-bar {
      width: 80px;
      height: 6px;
      background: var(--border);
      border-radius: 4px;
      overflow: hidden;
    }
    .rank-hot .score-bar span { display: block; height: 100%; border-radius: 4px; background: linear-gradient(90deg, var(--accent), #F97316); }

    /* ===== 专题推荐 ===== */
    .feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
    .feature-card {
      display: flex;
      background: var(--white);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border);
      transition: all .35s ease;
    }
    .feature-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
    .feature-card .feature-img { width: 44%; overflow: hidden; }
    .feature-card .feature-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
    .feature-card:hover .feature-img img { transform: scale(1.04); }
    .feature-body { flex: 1; padding: 24px; display: flex; flex-direction: column; }
    .feature-body .tag {
      align-self: flex-start;
      padding: 4px 14px;
      background: var(--accent-light);
      color: #B45309;
      border-radius: 40px;
      font-size: 12px;
      font-weight: 600;
      margin-bottom: 12px;
    }
    .feature-body h3 { font-size: 19px; margin-bottom: 10px; line-height: 1.4; }
    .feature-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; flex: 1; }
    .feature-link { margin-top: 16px; font-weight: 600; color: var(--primary); font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
    .feature-link:hover { gap: 10px; }

    /* ===== 数据统计 ===== */
    .stats-section {
      position: relative;
      padding: var(--space-xl) 0;
      background: url('/assets/images/backpic/back-3.png') center/cover no-repeat fixed;
    }
    .stats-section::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(15,23,42,0.92), rgba(37,99,235,0.82));
    }
    .stats-section .site-container { position: relative; z-index: 2; }
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; text-align: center; }
    .stat-item { padding: 24px; }
    .stat-icon {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: rgba(255,255,255,0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 20px;
      font-size: 22px;
      color: #fff;
      backdrop-filter: blur(6px);
    }
    .stat-number { font-size: 42px; font-weight: 800; color: #fff; line-height: 1.2; margin-bottom: 6px; }
    .stat-label { font-size: 15px; color: rgba(255,255,255,0.75); }

    /* ===== FAQ ===== */
    .faq-list { max-width: 800px; margin: 0 auto; display: grid; gap: 16px; }
    .faq-item {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: box-shadow .3s;
    }
    .faq-item:hover { box-shadow: var(--shadow-md); }
    .faq-question {
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text);
      cursor: pointer;
      text-align: left;
      background: transparent;
      transition: all .3s;
    }
    .faq-question:hover { color: var(--primary); }
    .faq-question i {
      font-size: 14px;
      color: var(--primary);
      transition: transform .3s;
      flex-shrink: 0;
      margin-left: 16px;
    }
    .faq-item.active .faq-question i { transform: rotate(45deg); }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height .45s ease, padding .3s;
      padding: 0 24px;
      color: var(--text-light);
      font-size: 14px;
      line-height: 1.75;
    }
    .faq-item.active .faq-answer {
      max-height: 260px;
      padding: 0 24px 20px;
    }

    /* ===== CTA ===== */
    .cta-section { padding: var(--space-xl) 0; position: relative; overflow: hidden; }
    .cta-box {
      background: linear-gradient(135deg, var(--primary), #38BDF8);
      border-radius: var(--radius-lg);
      padding: 64px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-lg);
    }
    .cta-box::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--accent), #F97316, var(--accent));
    }
    .cta-box h2 { font-size: 32px; color: #fff; margin-bottom: 14px; }
    .cta-box p { color: rgba(255,255,255,0.85); font-size: 16px; max-width: 560px; margin: 0 auto 32px; }
    .cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

    /* ===== 页脚 ===== */
    .site-footer {
      background: #0F172A;
      color: rgba(255,255,255,0.7);
      padding: 64px 0 0;
      margin-top: 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 48px;
      padding-bottom: 48px;
    }
    .footer-brand .brand-text { color: #fff; }
    .footer-brand p { font-size: 14px; line-height: 1.8; margin-top: 16px; max-width: 380px; }
    .footer-col h4 {
      color: #fff;
      font-size: 16px;
      margin-bottom: 20px;
    }
    .footer-col a {
      display: block;
      padding: 6px 0;
      font-size: 14px;
      color: rgba(255,255,255,0.6);
    }
    .footer-col a:hover { color: var(--accent); padding-left: 4px; }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: rgba(255,255,255,0.45);
      flex-wrap: wrap;
      gap: 8px;
    }
    .footer-bottom .domain { color: rgba(255,255,255,0.3); }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .page-banner h1 { font-size: 36px; }
      .news-grid { grid-template-columns: repeat(2, 1fr); }
      .feature-card { flex-direction: column; }
      .feature-card .feature-img { width: 100%; aspect-ratio: 16/9; }
      .stats-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .site-header { top: 8px; padding: 0 12px; }
      .dock-nav { padding: 10px 16px; border-radius: 40px; flex-wrap: wrap; gap: 10px; }
      .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 4px;
        padding: 12px 0 4px;
        order: 4;
        border-top: 1px solid var(--border);
        margin-top: 4px;
      }
      .nav-links.open { display: flex; }
      .nav-link { display: block; text-align: center; padding: 10px 16px; width: 100%; }
      .nav-toggle { display: flex; order: 3; margin-left: auto; }
      .nav-cta { order: 2; margin-left: 0; }
      .brand { order: 1; }
      .page-banner { padding: 110px 0 70px; }
      .page-banner h1 { font-size: 30px; }
      .page-banner .banner-desc { font-size: 15px; }
      .intro-grid { grid-template-columns: 1fr; gap: 40px; }
      .section-title { font-size: 26px; }
      .section { padding: 56px 0; }
      .rank-card { flex-wrap: wrap; gap: 10px; }
      .rank-hot { width: 100%; justify-content: flex-end; }
      .cta-box { padding: 40px 24px; }
      .cta-box h2 { font-size: 24px; }
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
      .footer-bottom { flex-direction: column; justify-content: center; text-align: center; }
    }

    @media (max-width: 520px) {
      .site-container { padding: 0 16px; }
      .news-grid { grid-template-columns: 1fr; }
      .stats-grid { grid-template-columns: 1fr; }
      .btn-lg { padding: 14px 28px; font-size: 15px; }
      .brand-text { font-size: 16px; }
      .brand-icon { width: 36px; height: 36px; font-size: 16px; }
      .page-banner h1 { font-size: 26px; }
      .section-tag { font-size: 12px; }
      .faq-question { font-size: 15px; padding: 16px 18px; }
      .faq-answer { padding: 0 18px; font-size: 14px; }
      .feature-body { padding: 18px; }
      .v-wrap { display: none; }
    }

    /* ===== 辅助 ===== */
    .text-center { text-align: center; }
    .mt-1 { margin-top: 8px; }
    .mt-2 { margin-top: 16px; }
    .mt-3 { margin-top: 24px; }
    .mb-2 { margin-bottom: 16px; }
    .mb-3 { margin-bottom: 24px; }
    .pt-0 { padding-top: 0; }
    a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --primary: #0f2137;
  --primary-light: #1c3a5f;
  --accent: #e6a23c;
  --accent-dark: #c98a26;
  --bg: #f4f6f9;
  --bg-deep: #0b1622;
  --card: #ffffff;
  --text: #17233b;
  --text-weak: #5d6b82;
  --border: #e3e8f0;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --shadow: 0 6px 24px rgba(15, 33, 55, 0.08);
  --shadow-lg: 0 14px 44px rgba(15, 33, 55, 0.14);
  --container: 1200px;
  --transition: 0.25s ease;
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

/* ===== 容器 ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}
.row {
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
  display: flex;
  flex-wrap: wrap;
}
.columns {
  padding-left: 16px;
  padding-right: 16px;
  margin-bottom: 28px;
  flex: 0 0 auto;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 40px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  transition: all var(--transition);
  text-align: center;
  border: 2px solid transparent;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-accent { background: var(--accent); color: #0b1622; }
.btn-accent:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-outline { border-color: rgba(255, 255, 255, 0.6); color: #fff; background: transparent; }
.btn-outline:hover { border-color: #fff; background: rgba(255, 255, 255, 0.1); }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-lg { padding: 16px 36px; font-size: 17px; }
.btn:focus-visible { outline: 3px solid rgba(230, 162, 60, 0.45); outline-offset: 3px; }

/* ===== 站点 Header / 浮动 Dock 导航 ===== */
.site-header {
  position: sticky;
  top: 12px;
  z-index: 100;
  margin-bottom: 24px;
}
.dock-nav {
  max-width: 1120px;
  width: calc(100% - 32px);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 10px 24px;
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 56px;
  box-shadow: 0 8px 32px rgba(15, 33, 55, 0.1);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--primary); font-size: 17px; white-space: nowrap; }
.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 17px;
  box-shadow: 0 4px 12px rgba(15, 33, 55, 0.22);
  flex-shrink: 0;
}
.nav-links { display: flex; align-items: center; gap: 6px; margin: 0 auto; }
.nav-link {
  padding: 8px 16px;
  border-radius: 32px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: all var(--transition);
}
.nav-link:hover { background: rgba(15, 33, 55, 0.06); color: var(--primary); }
.nav-link.active { background: var(--primary); color: #fff; font-weight: 600; }
.nav-link.active:hover { background: var(--primary-light); color: #fff; }
.nav-cta { margin-left: 4px; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 10px;
  background: rgba(15, 33, 55, 0.05);
}
.nav-toggle .bar { width: 20px; height: 2px; background: var(--text); border-radius: 4px; transition: all 0.3s; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); background: var(--accent); }
.nav-toggle[aria-expanded="true"] .bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); background: var(--accent); }

/* ===== 文章 Hero ===== */
.article-hero {
  position: relative;
  max-width: var(--container);
  margin: 0 auto 40px;
  padding: 64px 0;
  border-radius: 24px;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-image: url('/assets/images/backpic/back-2.png');
  color: #fff;
  box-shadow: var(--shadow-lg);
}
.article-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 22, 34, 0.85), rgba(15, 33, 55, 0.6));
}
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 20px;
}
.breadcrumb a { color: rgba(255, 255, 255, 0.85); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { opacity: 0.5; }
.breadcrumb .current { color: var(--accent); }
.article-hero h1 {
  font-size: 36px;
  line-height: 1.35;
  font-weight: 800;
  margin-bottom: 18px;
  max-width: 840px;
  color: #fff;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
}
.article-meta span { display: inline-flex; align-items: center; gap: 7px; }
.article-meta i { color: var(--accent); }

/* ===== 文章主体 ===== */
.article-body { padding: 0 0 20px; }
.article-main {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  box-shadow: var(--shadow);
  min-height: 400px;
}
.article-content { font-size: 16.5px; line-height: 1.9; color: var(--text); word-break: break-word; }
.article-content > * + * { margin-top: 1.2em; }
.article-content h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  margin: 1.6em 0 0.6em;
  line-height: 1.4;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
}
.article-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin: 1.4em 0 0.5em;
  line-height: 1.4;
}
.article-content p { margin-bottom: 1.2em; }
.article-content ul, .article-content ol { margin: 1em 0 1.4em; padding-left: 24px; }
.article-content ul li { list-style: disc; margin-bottom: 0.4em; }
.article-content ol li { list-style: decimal; margin-bottom: 0.4em; }
.article-content img { border-radius: var(--radius); margin: 1.4em 0; box-shadow: var(--shadow); }
.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: rgba(230, 162, 60, 0.08);
  padding: 16px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.4em 0;
  color: var(--text-weak);
}
.article-content a { color: var(--primary); font-weight: 600; border-bottom: 1px solid rgba(15, 33, 55, 0.2); }
.article-content a:hover { color: var(--accent); border-color: var(--accent); }
.article-content table { width: 100%; border-collapse: collapse; margin: 1.4em 0; }
.article-content table th, .article-content table td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; }
.article-content table th { background: var(--primary); color: #fff; }

/* 内容未找到 */
.not-found-card {
  text-align: center;
  padding: 60px 30px;
}
.not-found-card .not-found-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(230, 162, 60, 0.12);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin: 0 auto 20px;
}
.not-found-card h2 { font-size: 28px; color: var(--primary); margin-bottom: 10px; }
.not-found-card p { color: var(--text-weak); margin-bottom: 24px; }

/* ===== 侧边栏 ===== */
.sidebar-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}
.sidebar-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-card h3::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.sidebar-info li {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 14px;
}
.sidebar-info li:last-child { border-bottom: none; }
.sidebar-info .label { color: var(--text-weak); }
.sidebar-info .value { color: var(--primary); font-weight: 600; text-align: right; }
.sidebar-list li { padding: 10px 0; border-bottom: 1px solid var(--border); }
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list a {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--text);
  font-weight: 500;
}
.sidebar-list a:hover { color: var(--accent); }
.sidebar-list .list-cat {
  font-size: 12px;
  color: var(--accent);
  background: rgba(230, 162, 60, 0.1);
  padding: 2px 8px;
  border-radius: 12px;
  flex-shrink: 0;
  margin-top: 3px;
  white-space: nowrap;
}
.sidebar-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.sidebar-tags a {
  padding: 5px 14px;
  border-radius: 20px;
  background: var(--bg);
  border: 1px solid var(--border);
  font-size: 13px;
  color: var(--text);
  transition: all var(--transition);
}
.sidebar-tags a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.muted { color: var(--text-weak); font-size: 14px; }

/* ===== 延伸阅读 ===== */
.related-section {
  background: #fff;
  border-radius: 24px;
  max-width: var(--container);
  margin: 0 auto 40px;
  padding: 60px 40px;
  box-shadow: var(--shadow);
}
.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 { font-size: 30px; font-weight: 800; color: var(--primary); }
.section-head p { color: var(--text-weak); margin-top: 8px; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--bg);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  border: 1px solid var(--border);
}
.related-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; }
.related-cover { aspect-ratio: 16 / 9; overflow: hidden; }
.related-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.related-card:hover .related-cover img { transform: scale(1.05); }
.related-body { padding: 18px 20px; }
.related-body .tag {
  font-size: 12px;
  color: var(--accent);
  background: rgba(230, 162, 60, 0.1);
  padding: 3px 10px;
  border-radius: 14px;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 10px;
}
.related-body h3 {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  margin-bottom: 8px;
}
.related-body time { font-size: 13px; color: var(--text-weak); }

/* ===== FAQ ===== */
.faq-section { padding: 20px 0 40px; }
.faq-grid { max-width: 840px; margin: 0 auto; }
.faq-item {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 16px;
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item summary {
  padding: 20px 26px;
  font-weight: 600;
  font-size: 16px;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: color var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  color: var(--accent);
  font-size: 14px;
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-item[open] summary::before { transform: rotate(180deg); }
.faq-item summary:hover { color: var(--accent); }
.faq-item p {
  padding: 2px 26px 22px;
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section { padding: 20px 0 80px; }
.cta-card {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: var(--radius-lg);
  padding: 60px 50px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-card::before {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(230, 162, 60, 0.15);
  top: -100px;
  right: -60px;
}
.cta-card::after {
  content: "";
  position: absolute;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  bottom: -60px;
  left: -40px;
}
.cta-card h2 { font-size: 30px; font-weight: 800; margin-bottom: 12px; position: relative; z-index: 1; color: #fff; }
.cta-card p { font-size: 16px; color: rgba(255, 255, 255, 0.8); max-width: 560px; margin: 0 auto 30px; position: relative; z-index: 1; }
.cta-card .btn { position: relative; z-index: 1; }
.cta-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; position: relative; z-index: 1; }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255, 255, 255, 0.8);
  padding: 60px 0 0;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.4fr;
  gap: 48px;
  padding-bottom: 40px;
  margin-bottom: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand .brand { color: #fff; margin-bottom: 16px; }
.footer-brand p { font-size: 14.5px; line-height: 1.8; color: rgba(255, 255, 255, 0.65); max-width: 360px; }
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.footer-col a {
  display: block;
  padding: 7px 0;
  font-size: 14.5px;
  color: rgba(255, 255, 255, 0.65);
  transition: all var(--transition);
}
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 22px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}
.footer-bottom .domain { color: rgba(255, 255, 255, 0.3); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .article-hero h1 { font-size: 32px; }
}

@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    flex-direction: column;
    align-items: center;
    gap: 4px;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(18px);
    padding: 16px 20px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    display: none;
    width: min(320px, 90vw);
    margin: 0;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  .article-hero { padding: 48px 0; }
  .article-hero h1 { font-size: 28px; }
  .article-main { padding: 26px 22px; }
  .cta-card { padding: 40px 24px; }
  .cta-card h2 { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .related-section { padding: 40px 20px; }
}

@media (max-width: 520px) {
  .related-grid { grid-template-columns: 1fr; }
  .article-hero { padding: 40px 0; border-radius: 16px; }
  .article-hero h1 { font-size: 24px; }
  .breadcrumb { font-size: 13px; gap: 6px; }
  .article-content { font-size: 15.5px; }
  .article-main { padding: 20px 16px; border-radius: 16px; }
  .dock-nav { padding: 8px 16px; }
  .brand-text { font-size: 15px; }
  .faq-item summary { font-size: 15px; padding: 16px 18px; }
  .faq-item p { padding: 2px 18px 18px; font-size: 14px; }
  .cta-card { padding: 32px 20px; border-radius: 16px; }
  .cta-card h2 { font-size: 22px; }
}