/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --bg:#100E17;
  --surface:#191625;
  --panel:#221E33;
  --primary:#6D3BF5;
  --primary-deep:#5A28E0;
  --primary-light:#8A5BFF;
  --mint:#22D3A8;
  --orange:#FF9A3C;
  --text:#F4F2FF;
  --text-sub:#A8A1BF;
  --muted:#5B5570;
  --line:rgba(255,255,255,.08);
  --line-strong:#2A2540;
  --radius-btn:12px;
  --radius-card:18px;
  --radius-lg:24px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-hover:0 20px 44px -22px rgba(109,59,245,.55);
  --container:1200px;
  --font:system-ui,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
}
/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input{font-family:inherit}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--mint);
  outline-offset:2px;
}
/* ============ 容器 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.grid-overlay{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:34px 34px;
}
/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(16,14,23,.86);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:var(--bg);
  border-bottom-color:var(--line);
  box-shadow:0 14px 34px -26px rgba(0,0,0,.95);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:20px;
  height:76px;
  transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:62px}
.left-cluster{grid-column:1;display:flex;align-items:center;gap:26px;justify-self:start}
.right-cluster{grid-column:3;display:flex;align-items:center;gap:22px;justify-self:end}
.nav-link{
  font-size:15px;color:var(--text-sub);position:relative;
  padding:6px 0;transition:color .2s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--mint));
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;border-radius:2px;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.logo{grid-column:2;display:flex;align-items:center;gap:10px;justify-self:center}
.logo-mark{
  width:26px;height:26px;flex:none;border-radius:8px;
  background:linear-gradient(135deg,var(--primary),var(--mint));
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
  box-shadow:0 0 0 1px rgba(109,59,245,.5);
}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:4px;
  width:38px;height:38px;padding:0 8px;background:transparent;
  border:1px solid var(--line-strong);border-radius:10px;
}
.nav-toggle span{display:block;height:2px;background:var(--text);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-cta{display:none}
.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--bg);
  padding:8px 32px 24px;
}
.drawer.is-open{display:block}
.drawer-group{
  font-size:12px;letter-spacing:.12em;color:var(--muted);
  margin:18px 0 8px;
}
.drawer a.drawer-link{
  display:block;padding:12px 0;font-size:16px;color:var(--text-sub);
  border-bottom:1px solid var(--line);
}
.drawer a.drawer-link:hover{color:var(--text)}
.drawer .btn{margin-top:18px}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  padding:13px 24px;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(.98)}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;
  box-shadow:0 14px 30px -20px rgba(109,59,245,.95);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 36px -18px rgba(109,59,245,.85)}
.btn-ghost{
  background:transparent;border-color:var(--line-strong);color:var(--text-sub);
}
.btn-ghost:hover{border-color:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-accent{
  background:transparent;border-color:rgba(255,154,60,.55);color:var(--orange);
}
.btn-accent:hover{background:rgba(255,154,60,.1);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%}
.text-link{
  color:var(--mint);font-size:14px;font-weight:600;border-bottom:1px solid rgba(34,211,168,.4);
  padding-bottom:2px;transition:border-color .2s ease,color .2s ease;
}
.text-link:hover{border-color:var(--mint);color:#fff}
/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1;
  padding:6px 11px;border-radius:999px;
}
.badge-primary{background:rgba(109,59,245,.14);color:var(--primary-light)}
.badge-mint{background:rgba(34,211,168,.13);color:var(--mint)}
.badge-orange{background:rgba(255,154,60,.14);color:var(--orange)}
.badge-muted{background:rgba(168,161,191,.1);color:var(--text-sub)}
/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:84px 0 76px;border-bottom:1px solid var(--line)}
.hero::after{
  content:"";position:absolute;left:50%;top:-260px;width:900px;height:620px;
  transform:translateX(-50%);
  background:radial-gradient(circle at 50% 50%,rgba(109,59,245,.28),transparent 66%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}
.hero h1{
  font-size:52px;font-weight:800;line-height:1.15;letter-spacing:-.02em;
  margin-bottom:18px;
}
.hero h1 em{font-style:normal;color:var(--mint)}
.hero-sub{
  font-size:17px;color:var(--text-sub);max-width:34em;margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px}
.hero-stats{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  font-size:14px;color:var(--text-sub);
}
.hero-stats span.sep{width:1px;height:14px;background:var(--line-strong);display:inline-block}
.hero-stats b{color:var(--text);font-weight:700}
.hero-visual{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid rgba(109,59,245,.55);
  box-shadow:0 30px 60px -34px rgba(109,59,245,.75);
  background:var(--surface);
}
.hero-visual img{width:100%;height:392px;object-fit:cover;opacity:.88}
.hero-visual .grid-overlay{border-radius:var(--radius-lg)}
.hero-float{
  position:absolute;right:16px;bottom:16px;
  background:rgba(34,30,51,.96);
  border:1px solid var(--line-strong);
  border-radius:14px;
  padding:14px 16px;min-width:196px;
  box-shadow:0 20px 40px -24px rgba(0,0,0,.95);
}
.hero-float .hf-label{font-size:12px;color:var(--text-sub);letter-spacing:.08em}
.hero-float .hf-title{font-size:16px;font-weight:700;margin:4px 0 10px}
.hero-float .hf-bar{height:6px;border-radius:999px;background:rgba(255,255,255,.09);overflow:hidden}
.hero-float .hf-bar i{display:block;height:100%;width:78%;background:linear-gradient(90deg,var(--primary),var(--mint));border-radius:999px}
.hero-float .hf-note{font-size:12px;color:var(--text-sub);margin-top:8px}
/* ============ 板块标题 ============ */
.section-head{max-width:720px;margin-bottom:44px}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.14em;
  color:var(--primary-light);margin-bottom:12px;
}
.section-head h2{font-size:34px;font-weight:700;line-height:1.25;letter-spacing:-.01em;margin-bottom:14px}
.section-head p{color:var(--text-sub);font-size:15.5px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
/* ============ 对比表 ============ */
.table-panel{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--surface);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.table-scroll{overflow-x:auto}
table.compare{width:100%;border-collapse:collapse;min-width:760px}
table.compare th,table.compare td{
  padding:17px 20px;font-size:15px;text-align:center;
  border-bottom:1px solid var(--line);
}
table.compare thead th{
  background:var(--panel);font-weight:700;font-size:15px;color:var(--text);
  position:sticky;top:0;z-index:3;
}
table.compare th:first-child,table.compare td:first-child{
  text-align:left;color:var(--text);font-weight:600;
  position:sticky;left:0;background:var(--surface);z-index:2;
}
table.compare thead th:first-child{background:var(--panel);z-index:4}
table.compare tbody tr:nth-child(even) td{background:rgba(255,255,255,.018)}
table.compare tbody tr:nth-child(even) td:first-child{background:#1C1929}
table.compare tbody tr:last-child td{border-bottom:none}
.compare .col-reco{background:rgba(109,59,245,.1)}
table.compare tbody tr:nth-child(even) .col-reco{background:rgba(109,59,245,.13)}
.compare th.col-reco,.compare td.col-reco{
  border-left:1px solid rgba(109,59,245,.45);
  border-right:1px solid rgba(109,59,245,.45);
}
.th-inner{display:flex;flex-direction:column;align-items:center;gap:6px}
.mark-yes{color:var(--mint);font-weight:700}
.mark-no{color:var(--muted)}
.table-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:18px 24px;border-top:1px solid var(--line);background:rgba(34,30,51,.5);
  font-size:14px;color:var(--text-sub);
}
/* ============ 等级卡 ============ */
.cards-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.tier-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  overflow:hidden;
}
.tier-card::before{
  content:"";position:absolute;top:0;right:0;width:30px;height:30px;
  background:linear-gradient(225deg,rgba(109,59,245,.9),transparent 72%);
  clip-path:polygon(100% 0,100% 100%,0 0);
}
.tier-card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--shadow-hover)}
.tier-card.is-top{border-color:rgba(255,154,60,.6)}
.tier-card.is-top::before{background:linear-gradient(225deg,rgba(255,154,60,.95),transparent 72%)}
.tier-id{
  font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--primary-light);
  margin-bottom:10px;
}
.tier-card.is-top .tier-id{color:var(--orange)}
.tier-name{font-size:20px;font-weight:700;margin-bottom:16px}
.tier-list li{
  position:relative;padding-left:20px;font-size:14px;color:var(--text-sub);margin-bottom:10px;
}
.tier-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;
  background:var(--mint);opacity:.85;
}
.tier-card.is-top .tier-list li::before{background:var(--orange)}
.tier-foot{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
/* ============ 内容预览卡 ============ */
.cards-4 .cover-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;
}
.cover-card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--shadow-hover)}
.cover-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--panel)}
.cover-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.cover-card:hover .cover-media img{transform:scale(1.05)}
.cover-media .badge{position:absolute;left:12px;top:12px}
.cover-body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1}
.cover-body h3{font-size:17px;font-weight:700;line-height:1.45}
.cover-body p{font-size:14px;color:var(--text-sub)}
.cover-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--text-sub);
}
.cover-card.is-locked{opacity:.72}
.cover-card.is-locked .lock-icon{color:var(--muted)}
.lock-icon{display:inline-flex;align-items:center;gap:6px}
/* ============ 资讯列表（CMS 区） ============ */
.news-panel{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:rgba(25,22,37,.72);padding:10px;
}
.news-head{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding:14px 16px 18px;
}
.news-head h3{font-size:18px;font-weight:700}
.news-item{
  display:grid;grid-template-columns:160px 1fr;gap:20px;
  padding:16px;border-radius:14px;border:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.news-item + .news-item{margin-top:8px;border-top:1px solid var(--line);border-radius:0 0 14px 14px}
.news-item:hover{background:rgba(109,59,245,.08);border-color:rgba(109,59,245,.4)}
.news-thumb{border-radius:12px;overflow:hidden;background:var(--panel);aspect-ratio:16/10}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body h4{
  font-size:17px;font-weight:700;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:8px;
}
.news-body p{
  font-size:14px;color:var(--text-sub);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:12px;
}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--text-sub)}
.news-arrow{margin-left:auto;color:var(--primary-light);font-weight:700;transition:transform .2s ease}
.news-item:hover .news-arrow{transform:translateX(4px)}
.empty-state{
  border:1px dashed var(--line-strong);border-radius:14px;
  padding:38px 20px;text-align:center;color:var(--text-sub);font-size:15px;
  background:rgba(34,30,51,.35);
}
/* ============ 证据 / 保障 ============ */
.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.proof-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;transition:border-color .25s ease,transform .25s ease;
}
.proof-card:hover{border-color:var(--primary);transform:translateY(-4px)}
.proof-num{font-size:30px;font-weight:800;color:var(--mint);letter-spacing:-.02em;line-height:1.2}
.proof-card h3{font-size:17px;font-weight:700;margin:10px 0 8px}
.proof-card p{font-size:14px;color:var(--text-sub)}
/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:17px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;font-size:22px;line-height:1;color:var(--primary-light);
  transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open]{border-color:rgba(109,59,245,.45)}
.faq-body{padding:0 32px 22px;font-size:15px;color:var(--text-sub);line-height:1.9}
/* ============ CTA 横幅 ============ */
.cta-banner{
  position:relative;overflow:hidden;
  border:1px solid rgba(109,59,245,.45);
  border-radius:var(--radius-lg);
  padding:48px 44px;
  background:
    linear-gradient(115deg,rgba(109,59,245,.42),rgba(16,14,23,.2) 62%),
    var(--panel);
  box-shadow:0 30px 60px -34px rgba(109,59,245,.7);
}
.cta-banner::before{
  content:"";position:absolute;top:0;right:0;width:58px;height:58px;
  background:linear-gradient(225deg,rgba(255,154,60,.9),transparent 72%);
  clip-path:polygon(100% 0,100% 100%,0 0);
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-inner h2{font-size:30px;font-weight:700;line-height:1.3;margin-bottom:10px}
.cta-inner p{color:var(--text-sub);font-size:15px;max-width:40em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:rgba(16,14,23,.96);
  padding:64px 0 28px;
  margin-top:96px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;
}
.footer-brand .logo{margin-bottom:16px;justify-self:start}
.footer-brand p{font-size:14px;color:var(--text-sub);max-width:30em}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-sub);transition:color .2s ease}
.footer-col a:hover{color:var(--mint)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}
/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 28px}
  .hero h1{font-size:46px}
  .cards-4{grid-template-columns:repeat(2,1fr)}
  .proof-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .left-cluster,.right-cluster{display:none}
  .header-inner{grid-template-columns:42px 1fr 42px;height:64px;gap:12px}
  .site-header.is-scrolled .header-inner{height:58px}
  .nav-toggle{display:flex;grid-column:1;justify-self:start}
  .logo{grid-column:2;justify-self:center}
  .logo-text{font-size:16px}
  .mobile-cta{
    display:inline-flex;grid-column:3;justify-self:end;
    padding:8px 12px;font-size:13px;border-radius:10px;
  }
  .hero{padding:64px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:38px}
  .hero-visual img{height:320px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .section-head h2{font-size:24px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:15.5px}
  .hero-visual img{height:236px}
  .hero-float{right:12px;bottom:12px;min-width:168px;padding:12px}
  .hero-stats{gap:12px;font-size:13px}
  .hero-stats span.sep{display:none}
  .cards-4,.proof-grid{grid-template-columns:1fr}
  .cta-banner{padding:32px 24px}
  .cta-inner h2{font-size:24px}
  .news-item{grid-template-columns:1fr;gap:14px}
  .news-thumb{aspect-ratio:16/9}
  .faq-item summary{font-size:16px;padding:18px 20px}
  .faq-body{padding:0 20px 20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{margin-top:56px;padding-top:48px}
}
@media (max-width:520px){
  .btn{width:100%}
  .hero-actions{gap:10px}
  .cta-actions{width:100%}
  .mobile-cta{width:auto}
  .logo-text{font-size:15px}
  .table-foot{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --bg:#100E17;
  --surface:#191625;
  --panel:#221E33;
  --primary:#6D3BF5;
  --primary-deep:#5A28E0;
  --primary-soft:rgba(109,59,245,.12);
  --mint:#22D3A8;
  --amber:#FF9A3C;
  --text:#F4F2FF;
  --muted:#A8A1BF;
  --line:rgba(255,255,255,.08);
  --border:#2A2540;
  --missing:#5B5570;
  --radius-sm:12px;
  --radius:18px;
  --radius-lg:24px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-hover:0 20px 44px -22px rgba(109,59,245,.55);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h2{font-size:34px;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
h3{font-size:22px;line-height:1.35;font-weight:600;}
p{font-size:16px;line-height:1.8;color:var(--muted);}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(16,14,23,.86);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:var(--bg);
  border-bottom-color:var(--line);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:20px;
  height:76px;
  transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:62px;}
.left-cluster{justify-self:start;display:flex;align-items:center;gap:26px;}
.right-cluster{justify-self:end;display:flex;align-items:center;gap:26px;}
.logo{
  justify-self:center;
  display:inline-flex;
  align-items:center;
  gap:10px;
  white-space:nowrap;
}
.logo-mark{
  width:22px;height:22px;
  background:linear-gradient(135deg,var(--primary),var(--mint));
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
  flex:0 0 auto;
}
.logo-text{font-size:17px;font-weight:800;color:var(--text);letter-spacing:.01em;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--muted);
  padding:6px 2px;
  transition:color .2s ease;
}
.nav-link:hover{color:#fff;}
.nav-link.is-active{color:#fff;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-4px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;height:42px;
  padding:0 11px;
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  background:transparent;
  cursor:pointer;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--text);transition:transform .25s ease,opacity .25s ease;}
.mobile-cta{display:none;justify-self:end;}

.drawer{
  display:none;
  max-height:0;
  overflow:hidden;
  background:var(--bg);
  border-top:1px solid var(--line);
  transition:max-height .3s ease,padding .3s ease;
}
.drawer.is-open{max-height:600px;padding:16px 20px 24px;}
.drawer-group{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--muted);
  margin:14px 0 6px;
  text-transform:uppercase;
}
.drawer-link{
  display:block;
  padding:12px 0;
  font-size:16px;
  color:var(--text);
  border-bottom:1px solid var(--line);
}
.drawer-link:hover{color:#fff;}
.drawer .btn{margin-top:16px;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 20px;
  border:1px solid transparent;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease,background .2s ease;
}
.btn:active{transform:scale(.98);}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#8A5BFF);
  color:#fff;
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 30px -12px rgba(109,59,245,.75);
}
.btn-ghost{
  background:transparent;
  border-color:var(--border);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--primary);color:#fff;}
.btn-accent{
  background:transparent;
  border-color:rgba(255,154,60,.6);
  color:var(--amber);
}
.btn-accent:hover{background:rgba(255,154,60,.1);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--mint);
  font-size:14px;
  font-weight:600;
  border-bottom:1px solid rgba(34,211,168,.35);
  padding-bottom:2px;
  transition:border-color .2s ease,color .2s ease;
}
.btn-text:hover{border-bottom-color:var(--mint);color:#fff;}

/* ---------- Badges & tags ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  line-height:1.6;
  white-space:nowrap;
}
.badge-primary{background:var(--primary-soft);color:#B79CFF;}
.badge-mint{background:rgba(34,211,168,.12);color:var(--mint);}
.badge-amber{background:rgba(255,154,60,.12);color:var(--amber);}
.badge-muted{background:rgba(255,255,255,.05);color:var(--muted);}
.tagrow{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  padding:8px 16px;
  border:1px solid var(--border);
  border-radius:999px;
  font-size:14px;
  color:var(--muted);
  transition:border-color .2s ease,color .2s ease;
}
.tag:hover{border-color:var(--primary);color:#fff;}

/* ---------- Layout sections ---------- */
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .badge{margin-bottom:16px;}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:16px;}
.eyebrow{
  font-size:13px;
  letter-spacing:.16em;
  color:var(--primary);
  font-weight:700;
  margin-bottom:12px;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:84px 0 72px;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(16,14,23,.94),rgba(16,14,23,.99));
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.7;
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.hero-inner{max-width:860px;}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.hero h1{
  font-size:52px;
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.02em;
  margin-bottom:18px;
}
.hero-sub{
  font-size:17px;
  color:var(--muted);
  max-width:640px;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:14px 28px;
  padding-top:24px;
  border-top:1px solid var(--line);
  font-size:14px;
  color:var(--muted);
}
.hero-stats span strong{color:var(--text);font-weight:700;}

/* ---------- Split block ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
  align-items:center;
}
.figure-panel{
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:var(--surface);
  box-shadow:var(--shadow);
}
.figure-panel img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.check-list li{
  position:relative;
  padding-left:26px;
  margin-bottom:14px;
  font-size:15.5px;
  color:var(--muted);
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:.62em;
  width:10px;height:10px;
  background:var(--mint);
  border-radius:2px;
}

/* ---------- Table ---------- */
.table-wrap{
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--surface);
  overflow-x:auto;
  box-shadow:var(--shadow);
}
table.compare{
  width:100%;
  min-width:860px;
  border-collapse:collapse;
}
table.compare th,
table.compare td{
  padding:16px 20px;
  font-size:15px;
  text-align:left;
  border-bottom:1px solid var(--line);
  vertical-align:middle;
}
table.compare thead th{
  position:sticky;
  top:0;
  z-index:3;
  background:#1E1A2C;
  color:var(--muted);
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
}
table.compare tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
table.compare tbody tr:last-child td{border-bottom:none;}
table.compare tbody th{
  position:sticky;
  left:0;
  z-index:2;
  background:#1B1828;
  color:var(--text);
  font-weight:600;
  font-size:15px;
  min-width:200px;
}
table.compare thead th:first-child{
  z-index:4;
  left:0;
  background:#1E1A2C;
}
.col-reco{
  background:rgba(109,59,245,.08)!important;
  border-left:1px solid rgba(109,59,245,.45)!important;
  border-right:1px solid rgba(109,59,245,.45)!important;
}
.reco-head{display:flex;align-items:center;gap:8px;}
.yes{color:var(--mint);font-weight:600;}
.no{color:var(--missing);}
.table-note{
  margin-top:18px;
  font-size:14px;
  color:var(--muted);
}

/* ---------- Tier rows ---------- */
.tier-list{display:grid;gap:20px;}
.tier-row{
  position:relative;
  display:grid;
  grid-template-columns:64px 1fr 190px;
  gap:24px;
  align-items:start;
  padding:26px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.tier-row:hover{
  transform:translateY(-4px);
  border-color:var(--primary);
  box-shadow:var(--shadow-hover);
}
.tier-row.is-top{
  border-color:rgba(255,154,60,.5);
}
.tier-row.is-top::after{
  content:"";
  position:absolute;
  top:-1px;right:-1px;
  width:24px;height:24px;
  background:var(--bg);
  clip-path:polygon(100% 0,100% 100%,0 0);
}
.tier-icon{
  width:56px;height:56px;
  display:grid;
  place-items:center;
  border-radius:14px;
  background:var(--primary-soft);
  border:1px solid rgba(109,59,245,.35);
  color:#B79CFF;
  font-weight:800;
  font-size:17px;
}
.tier-row.is-top .tier-icon{
  background:rgba(255,154,60,.12);
  border-color:rgba(255,154,60,.45);
  color:var(--amber);
}
.tier-body h3{margin-bottom:6px;}
.tier-body p{font-size:14.5px;margin-bottom:14px;}
.tier-points li{
  position:relative;
  padding-left:22px;
  font-size:14px;
  color:var(--muted);
  margin-bottom:8px;
}
.tier-points li::before{
  content:"";
  position:absolute;
  left:0;top:.6em;
  width:8px;height:8px;
  background:var(--mint);
  border-radius:2px;
}
.tier-side{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:12px;
  padding-left:24px;
  border-left:1px solid var(--line);
}

/* ---------- Feature grid ---------- */
.grid-3{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.card{
  position:relative;
  padding:24px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.card:hover{
  transform:translateY(-4px);
  border-color:var(--primary);
  box-shadow:var(--shadow-hover);
}
.card h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.card p{font-size:14px;line-height:1.75;}
.card .card-foot{
  margin-top:18px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}
.card-icon{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:12px;
  background:var(--primary-soft);
  border:1px solid rgba(109,59,245,.32);
  color:#B79CFF;
  font-weight:800;
  font-size:14px;
  margin-bottom:16px;
}

/* ---------- Steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  counter-reset:step;
}
.step{
  position:relative;
  padding:26px 22px;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  transition:border-color .22s ease,transform .22s ease;
}
.step:hover{border-color:var(--primary);transform:translateY(-4px);}
.step-num{
  display:grid;
  place-items:center;
  width:38px;height:38px;
  border-radius:50%;
  background:var(--primary);
  color:#fff;
  font-weight:800;
  font-size:15px;
  margin-bottom:16px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14px;}

/* ---------- FAQ ---------- */
.faq{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 0;
  background:none;
  border:0;
  color:var(--text);
  font-size:17px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  transition:color .2s ease;
}
.faq-q:hover{color:#fff;}
.faq-q .plus{
  flex:0 0 auto;
  color:var(--primary);
  font-size:22px;
  line-height:1;
  transition:transform .25s ease;
}
.faq-item.is-open .plus{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  padding-left:32px;
  font-size:15px;
  line-height:1.9;
  color:var(--muted);
  transition:max-height .3s ease,padding .3s ease;
}
.faq-item.is-open .faq-a{max-height:420px;padding-bottom:22px;}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:48px;
  border-radius:var(--radius-lg);
  border:1px solid var(--border);
  overflow:hidden;
  background-image:linear-gradient(120deg,rgba(109,59,245,.55),rgba(16,14,23,.96)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:44px 44px;
  opacity:.6;
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:30px;margin-bottom:10px;}
.cta-band p{color:rgba(244,242,255,.78);font-size:15px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto;}
.cta-band::before{
  content:"";
  position:absolute;
  top:-1px;left:-1px;
  width:26px;height:26px;
  background:var(--bg);
  clip-path:polygon(0 0,100% 0,0 100%);
  z-index:3;
}

/* ---------- Breadcrumb ---------- */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:20px;
}
.crumb a:hover{color:#fff;}
.crumb span.sep{color:var(--missing);}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:24px;
  padding:72px 0 32px;
  border-top:1px solid var(--line);
  background:#0C0A12;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line);
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;max-width:360px;}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col li{margin-bottom:10px;}
.footer-col a{
  font-size:14px;
  color:var(--muted);
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--mint);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  padding-top:24px;
  font-size:13px;
  color:var(--muted);
}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .tier-row{grid-template-columns:64px 1fr;}
  .tier-side{
    grid-column:2;
    padding-left:0;
    border-left:0;
    border-top:1px solid var(--line);
    padding-top:16px;
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    width:100%;
  }
}
@media (max-width:1023px){
  .header-inner{grid-template-columns:auto 1fr auto;height:64px;gap:12px;}
  .nav-toggle{display:inline-flex;justify-self:start;}
  .left-cluster,.right-cluster{display:none;}
  .mobile-cta{display:inline-flex;}
  .drawer{display:block;}
  .hero{padding:64px 0 56px;}
  .hero h1{font-size:38px;}
  .section{padding:72px 0;}
  h2{font-size:28px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .hero{padding:52px 0 44px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .hero-stats{gap:10px 20px;font-size:13px;}
  .section{padding:56px 0;}
  h2{font-size:24px;}
  h3{font-size:18px;}
  p{font-size:15.5px;}
  .grid-3{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .tier-row{padding:20px;grid-template-columns:56px 1fr;gap:16px;}
  .tier-side{
    grid-column:1 / -1;
    flex-direction:column;
    align-items:stretch;
  }
  .tier-side .btn{width:100%;}
  .cta-band{
    flex-direction:column;
    align-items:flex-start;
    padding:32px 24px;
  }
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .faq-a{padding-left:0;}
  .section-head{margin-bottom:28px;}
}
@media (max-width:480px){
  .logo-text{font-size:15px;}
  .badge{font-size:11px;}
  .btn{font-size:14px;}
  .hero-actions .btn{width:100%;}
}

/* roulang page: article */
:root{
  --bg:#100E17;
  --surface:#191625;
  --surface-2:#221E33;
  --primary:#6D3BF5;
  --primary-light:#8A5BFF;
  --primary-deep:#5A28E0;
  --mint:#22D3A8;
  --warm:#FF9A3C;
  --text:#F4F2FF;
  --text-soft:#DCD8EE;
  --muted:#A8A1BF;
  --line:rgba(255,255,255,.08);
  --line-strong:#2A2540;
  --missing:#5B5570;
  --r-btn:12px;
  --r-card:18px;
  --r-lg:24px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-hover:0 20px 44px -22px rgba(109,59,245,.55);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px}
::selection{background:rgba(109,59,245,.45);color:#fff}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:96px 0}
.section-sm{padding:64px 0}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,border-color .22s ease,color .22s ease;
}
.btn:active{transform:scale(.98)}
.btn-primary{
  background:linear-gradient(135deg,#6D3BF5 0%,#8A5BFF 100%);
  color:#fff;
  box-shadow:0 12px 28px -18px rgba(109,59,245,.9);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px -16px rgba(109,59,245,.85)}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-accent{
  background:transparent;
  border-color:rgba(255,154,60,.65);
  color:var(--warm);
}
.btn-accent:hover{border-color:var(--warm);background:rgba(255,154,60,.1)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--mint);
  font-weight:600;
  font-size:15px;
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,color .2s ease;
}
.link-arrow::after{content:"→";transition:transform .2s ease}
.link-arrow:hover{border-bottom-color:var(--mint)}
.link-arrow:hover::after{transform:translateX(4px)}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  line-height:1.5;
  letter-spacing:.02em;
}
.badge-primary{background:rgba(109,59,245,.12);color:#B49BFF}
.badge-mint{background:rgba(34,211,168,.12);color:var(--mint)}
.badge-warm{background:rgba(255,154,60,.12);color:var(--warm)}

.card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line-strong);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow-card);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--shadow-hover)}
.panel{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line-strong);
  border-radius:var(--r-card);
  padding:24px;
}
.cut-corner::after{
  content:"";
  position:absolute;
  top:0;
  right:0;
  width:16px;
  height:16px;
  background:rgba(255,154,60,.85);
  clip-path:polygon(100% 0,0 0,100% 100%);
  border-top-right-radius:var(--r-card);
}
.section-head{margin-bottom:40px;max-width:720px}
.section-head h2{font-size:34px;font-weight:700;line-height:1.25;letter-spacing:-.01em}
.section-head p{margin-top:12px;color:var(--muted);font-size:15px}
.grid-texture{position:relative;overflow:hidden}
.grid-texture::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(16,14,23,.82);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:#100E17;
  border-bottom-color:var(--line);
  box-shadow:0 12px 30px -24px rgba(0,0,0,.95);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:76px;
  transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:62px}
.left-cluster{display:flex;align-items:center;gap:22px;justify-self:start}
.right-cluster{display:flex;align-items:center;gap:22px;justify-self:end}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--muted);
  padding:6px 0;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transition:width .24s ease;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:#fff}
.nav-link.is-active::after{width:100%}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  justify-self:center;
  font-weight:800;
  letter-spacing:-.01em;
}
.logo-mark{
  width:26px;
  height:26px;
  flex:0 0 26px;
  border-radius:9px;
  background:linear-gradient(135deg,#6D3BF5 0%,#22D3A8 100%);
  box-shadow:0 0 0 1px rgba(255,255,255,.1) inset;
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
}
.logo-text{font-size:17px;white-space:nowrap}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:40px;
  height:40px;
  border:1px solid var(--line-strong);
  border-radius:10px;
  padding:0 9px;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--text);transition:transform .22s ease,opacity .22s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-cta{display:none}
.drawer{
  display:none;
  padding:16px 24px 26px;
  background:var(--surface);
  border-top:1px solid var(--line);
}
.drawer.is-open{display:block}
.drawer-group{margin:14px 0 8px;font-size:12px;letter-spacing:.14em;color:var(--missing);text-transform:uppercase}
.drawer-link{display:block;padding:11px 0;font-size:15px;color:var(--text-soft);border-bottom:1px solid var(--line)}
.drawer-link:last-of-type{border-bottom:0}
.drawer-link:hover{color:var(--mint)}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  padding:52px 0 40px;
  background:linear-gradient(180deg,rgba(34,30,51,.75) 0%,rgba(16,14,23,0) 100%);
  border-bottom:1px solid var(--line);
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--muted);transition:color .2s ease}
.breadcrumb a:hover{color:var(--mint)}
.breadcrumb .sep{color:var(--missing)}
.breadcrumb .current{color:var(--text-soft)}
.article-title{
  font-size:38px;
  font-weight:800;
  line-height:1.25;
  letter-spacing:-.02em;
  max-width:900px;
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:14px;
  margin-top:22px;
  font-size:13px;
  color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--missing)}

/* ---------- 文章主体 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:48px;
  align-items:start;
  padding-top:64px;
  padding-bottom:96px;
}
.article-body{
  max-width:760px;
  font-size:16px;
  line-height:1.9;
  color:var(--text-soft);
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  position:relative;
  font-size:26px;
  font-weight:700;
  line-height:1.35;
  color:var(--text);
  margin:44px 0 16px;
  padding-left:16px;
  border-left:4px solid var(--primary);
}
.article-body h3{
  position:relative;
  font-size:20px;
  font-weight:600;
  color:var(--text);
  margin:32px 0 12px;
  padding-left:18px;
}
.article-body h3::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:9px;
  height:9px;
  border-radius:2px;
  background:var(--mint);
}
.article-body h4{font-size:17px;font-weight:600;color:var(--text);margin:24px 0 10px}
.article-body p{margin:0 0 1em}
.article-body strong{color:#fff;font-weight:600}
.article-body a{color:var(--mint);border-bottom:1px solid rgba(34,211,168,.35)}
.article-body a:hover{border-bottom-color:var(--mint)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:4px}
.article-body li{position:relative;padding-left:22px;margin-bottom:8px}
.article-body ul > li::before{
  content:"";
  position:absolute;
  left:2px;
  top:11px;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--mint);
  opacity:.85;
}
.article-body ol{counter-reset:item}
.article-body ol > li::before{
  counter-increment:item;
  content:counter(item);
  position:absolute;
  left:0;
  top:1px;
  width:20px;
  height:20px;
  border-radius:6px;
  background:rgba(109,59,245,.18);
  color:#B49BFF;
  font-size:12px;
  line-height:20px;
  text-align:center;
  font-weight:700;
}
.article-body blockquote{
  margin:24px 0;
  padding:18px 22px;
  background:var(--surface);
  border-left:3px solid var(--mint);
  border-radius:0 14px 14px 0;
  color:var(--text-soft);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:16px;margin:22px 0;border:1px solid var(--line-strong)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--muted);margin-top:8px;text-align:center}
.article-body table{
  margin:24px 0;
  font-size:14px;
  border:1px solid var(--line-strong);
  border-radius:var(--r-card);
  overflow:hidden;
}
.article-body thead th{
  background:#221E33;
  color:var(--text);
  font-weight:600;
  text-align:left;
  padding:14px 16px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.article-body tbody td{
  padding:13px 16px;
  border-bottom:1px solid var(--line);
  color:var(--text-soft);
}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

.empty-panel{
  border:1px dashed var(--line-strong);
  border-radius:var(--r-card);
  padding:40px 28px;
  text-align:center;
  color:var(--muted);
  background:var(--surface);
}
.empty-panel strong{display:block;color:var(--text);font-size:18px;margin-bottom:8px}
.empty-panel .link-arrow{margin-top:16px}

.article-foot{
  max-width:760px;
  margin-top:32px;
  padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.article-foot .note{font-size:13px;color:var(--muted)}

/* ---------- 侧栏 ---------- */
.article-side{display:grid;gap:24px;position:sticky;top:104px}
.side-title{
  font-size:15px;
  font-weight:700;
  color:var(--text);
  margin-bottom:16px;
  display:flex;
  align-items:center;
  gap:8px;
}
.side-title::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:2px;
  background:var(--primary);
}
.member-card .tier{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:12px;
}
.member-card .tier-name{font-size:19px;font-weight:700}
.member-card p{font-size:14px;color:var(--muted);line-height:1.75}
.member-card .meta-line{
  margin-top:16px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
  display:flex;
  justify-content:space-between;
  gap:10px;
}
.member-card .btn{margin-top:18px}
.side-list li + li{margin-top:14px}
.side-list a{display:block}
.side-list .item-title{
  font-size:15px;
  line-height:1.6;
  color:var(--text-soft);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color .2s ease;
}
.side-list a:hover .item-title{color:#fff}
.side-list .item-time{font-size:12px;color:var(--missing);margin-top:6px}
.side-cats a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:11px 0;
  font-size:14px;
  color:var(--text-soft);
  border-bottom:1px solid var(--line);
  transition:color .2s ease,padding-left .2s ease;
}
.side-cats a:last-child{border-bottom:0}
.side-cats a:hover{color:var(--mint);padding-left:4px}
.side-cats span{color:var(--missing);font-size:12px}

/* ---------- 相关推荐 ---------- */
.related-block{margin-top:56px;max-width:760px}
.related-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-bottom:22px;
}
.related-head h2{font-size:22px;font-weight:700;line-height:1.4;padding-left:14px;border-left:4px solid var(--primary)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.related-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line-strong);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.related-card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--shadow-hover)}
.related-card img{aspect-ratio:16/10;object-fit:cover;width:100%}
.related-card .body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-card h3{
  font-size:15px;
  font-weight:600;
  line-height:1.6;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-card .foot{
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid var(--line);
  font-size:12px;
  color:var(--muted);
  display:flex;
  align-items:center;
  justify-content:space-between;
}

/* ---------- CTA ---------- */
.cta-wrap{padding:0 0 96px}
.cta{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:center;
  gap:28px;
  padding:44px 48px;
  border-radius:var(--r-lg);
  background:linear-gradient(100deg,rgba(109,59,245,.85) 0%,rgba(109,59,245,.18) 55%,rgba(34,211,168,.12) 100%);
  border:1px solid rgba(109,59,245,.5);
  overflow:hidden;
}
.cta h2{font-size:28px;font-weight:700;line-height:1.3}
.cta p{margin-top:10px;font-size:15px;color:rgba(244,242,255,.82);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#0C0A13;
  border-top:1px solid var(--line);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--muted);max-width:340px;line-height:1.85}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--text)}
.footer-col li + li{margin-top:10px}
.footer-col a{font-size:14px;color:var(--muted);transition:color .2s ease}
.footer-col a:hover{color:var(--mint)}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--missing);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:36px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .nav-toggle{display:flex}
  .left-cluster,.right-cluster{display:none}
  .mobile-cta{display:inline-flex}
  .header-inner{grid-template-columns:auto 1fr auto;height:66px;gap:12px}
  .logo{justify-self:center}
  .logo-text{font-size:15px}
  .article-title{font-size:30px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;padding-top:44px;padding-bottom:72px}
  .article-side{position:static}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta{grid-template-columns:minmax(0,1fr);padding:36px 30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .article-hero{padding:36px 0 28px}
  .article-title{font-size:26px}
  .article-body{font-size:15.5px}
  .article-body h2{font-size:22px}
  .article-body h3{font-size:18px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .cta h2{font-size:22px}
  .cta{padding:30px 22px}
}
@media (max-width:520px){
  .btn{width:100%}
  .btn-sm,.mobile-cta{width:auto}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .logo-text{font-size:14px}
  .article-meta{gap:10px}
}

/* roulang page: category2 */
:root{
  --bg:#100E17;
  --bg-2:#191625;
  --bg-3:#221E33;
  --brand:#6D3BF5;
  --brand-deep:#5A28E0;
  --brand-2:#8A5BFF;
  --mint:#22D3A8;
  --amber:#FF9A3C;
  --text:#F4F2FF;
  --muted:#A8A1BF;
  --dim:#5B5570;
  --line:rgba(255,255,255,.08);
  --line-2:#2A2540;
  --r-btn:12px;
  --r-card:18px;
  --r-lg:24px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-hover:0 20px 44px -22px rgba(109,59,245,.55);
  --container:1200px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.2;font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-block;margin-bottom:14px;font-size:13px;letter-spacing:.14em;
  color:var(--mint);text-transform:none;
}
.section-head h2{font-size:34px;font-weight:700;}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.85;}
.lead{color:var(--muted);max-width:40em;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;height:76px;
  background:transparent;border-bottom:1px solid transparent;
  transition:height .28s ease,background-color .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.site-header.is-scrolled{height:62px;background:var(--bg);border-bottom-color:var(--line);box-shadow:0 12px 30px -24px rgba(0,0,0,.95);}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:100%;gap:16px;
}
.left-cluster{display:flex;align-items:center;gap:4px;justify-self:start;}
.right-cluster{display:flex;align-items:center;gap:8px;justify-self:end;}
.nav-link{
  padding:9px 13px;border-radius:10px;font-size:15px;color:var(--muted);
  border:1px solid transparent;white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.05);}
.nav-link.is-active{color:#fff;background:rgba(109,59,245,.16);border-color:rgba(109,59,245,.4);}
.logo{display:inline-flex;align-items:center;gap:10px;justify-self:center;white-space:nowrap;}
.logo-mark{
  width:26px;height:26px;flex:0 0 auto;background:linear-gradient(135deg,var(--brand),var(--brand-2));
  clip-path:polygon(50% 0,100% 26%,100% 74%,50% 100%,0 74%,0 26%);
  box-shadow:0 0 18px -4px rgba(109,59,245,.9);
}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--text);}
.nav-toggle{
  display:none;width:42px;height:38px;border-radius:10px;border:1px solid var(--line-2);
  background:var(--bg-2);flex-direction:column;justify-content:center;align-items:center;gap:4px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-cta{display:none;justify-self:end;}
.drawer{
  display:none;position:fixed;top:62px;left:0;right:0;z-index:55;
  background:#15121f;border-bottom:1px solid var(--line);
  max-height:0;overflow:hidden;padding:0 20px;
  transition:max-height .35s ease,padding .3s ease;
}
.drawer.is-open{max-height:560px;padding:16px 20px 26px;}
.drawer-group{margin:14px 0 8px;font-size:12px;letter-spacing:.16em;color:var(--dim);}
.drawer-link{display:block;padding:12px 4px;font-size:16px;color:var(--muted);border-bottom:1px solid var(--line);}
.drawer-link:hover,.drawer-link.is-active{color:#fff;}
.drawer .btn{margin-top:18px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;color:#fff;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,box-shadow .25s ease,border-color .25s ease,background-color .25s ease,color .25s ease;
}
.btn:active{transform:scale(.98);}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 12px 28px -18px rgba(109,59,245,.95);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 38px -18px rgba(109,59,245,.95);}
.btn-ghost{background:transparent;border-color:var(--line-2);color:var(--text);}
.btn-ghost:hover{border-color:var(--brand);color:#fff;transform:translateY(-2px);}
.btn-accent{background:transparent;border-color:var(--amber);color:var(--amber);}
.btn-accent:hover{background:rgba(255,154,60,.12);transform:translateY(-2px);}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px;}
.btn-block{display:flex;width:100%;}

/* ---------- badges / chips ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;white-space:nowrap;
}
.badge-brand{background:rgba(109,59,245,.14);color:#B79BFF;}
.badge-mint{background:rgba(34,211,168,.14);color:var(--mint);}
.badge-amber{background:rgba(255,154,60,.14);color:var(--amber);}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:18px;}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:40px;}
.chip{
  padding:9px 18px;border-radius:999px;border:1px solid var(--line-2);
  font-size:14px;color:var(--muted);background:var(--bg-2);
  transition:color .2s ease,border-color .2s ease,background-color .2s ease,transform .2s ease;
}
.chip:hover{color:#fff;border-color:var(--brand);transform:translateY(-2px);}
.chip.is-active{background:linear-gradient(135deg,var(--brand),var(--brand-2));border-color:transparent;color:#fff;box-shadow:0 12px 26px -18px rgba(109,59,245,.95);}

/* ---------- hero ---------- */
.page-hero{
  position:relative;padding:150px 0 72px;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(16,14,23,.86),rgba(16,14,23,.97)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.7) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.7) 1px,transparent 1px);
  background-size:56px 56px;
}
.page-hero .container{position:relative;z-index:1;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;justify-content:center;margin-bottom:32px;font-size:13px;color:var(--muted);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:#fff;}
.crumb .sep{color:var(--dim);}
.crumb .current{color:var(--text);}
.hero-narrow{max-width:820px;margin:0 auto;text-align:center;}
.hero-narrow h1{font-size:52px;font-weight:800;line-height:1.15;letter-spacing:-.02em;}
.hero-sub{margin-top:20px;font-size:17px;color:var(--muted);line-height:1.85;max-width:34em;margin-left:auto;margin-right:auto;}
.hero-stats{
  margin-top:32px;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:0;
  font-size:14px;color:var(--muted);
}
.hero-stats li{padding:0 18px;position:relative;}
.hero-stats li + li{border-left:1px solid var(--line);}
.hero-stats strong{color:var(--text);font-weight:700;}

/* ---------- cover grid ---------- */
.cover-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.cover-card{
  display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line-2);
  border-radius:var(--r-card);padding:18px;box-shadow:var(--shadow);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.cover-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-hover);}
.cover-card.is-locked{opacity:.72;}
.thumb{
  display:block;aspect-ratio:16/10;overflow:hidden;border-radius:14px;background:var(--bg-3);
  border:1px solid var(--line);
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.cover-card:hover .thumb img{transform:scale(1.05);}
.cover-body{padding:18px 4px 0;}
.cover-body h3{margin-top:12px;font-size:18px;font-weight:700;line-height:1.45;}
.cover-body p{margin:10px 0 0;font-size:14px;color:var(--muted);line-height:1.8;}
.cover-foot{
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--dim);
}
.state{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;}
.state-open{color:var(--mint);}
.state-locked{color:var(--dim);}
.state::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor;}

/* ---------- pager ---------- */
.pager{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:8px;margin-top:44px;}
.page-item{
  min-width:40px;height:40px;padding:0 12px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-2);border-radius:12px;color:var(--muted);font-size:14px;background:var(--bg-2);
}
.page-item:hover{color:#fff;border-color:var(--brand);}
.page-item.is-active{background:linear-gradient(135deg,var(--brand),var(--brand-2));border-color:transparent;color:#fff;font-weight:700;}
.page-next{color:var(--mint);border-color:rgba(34,211,168,.35);}

/* ---------- info grid ---------- */
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.info-card{
  background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--shadow);position:relative;overflow:hidden;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.info-card::after{
  content:"";position:absolute;top:0;right:0;width:64px;height:64px;
  background:linear-gradient(225deg,rgba(109,59,245,.22),transparent 70%);
}
.info-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-hover);}
.info-num{font-size:13px;letter-spacing:.16em;color:var(--brand-2);font-weight:700;}
.info-card h3{margin:14px 0 10px;font-size:20px;font-weight:700;}
.info-card p{font-size:14px;color:var(--muted);line-height:1.85;margin:0;}
.info-list{margin-top:16px;display:grid;gap:10px;}
.info-list li{position:relative;padding-left:22px;font-size:14px;color:var(--muted);line-height:1.75;}
.info-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;
  background:var(--mint);transform:rotate(45deg);
}

/* ---------- feature rows ---------- */
.feature-list{display:grid;gap:24px;}
.feature{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:36px;align-items:center;
  background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow);
}
.feature:nth-child(even) .feature-media{order:2;}
.feature-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.feature-body h3{font-size:22px;font-weight:700;margin:14px 0 12px;}
.feature-body p{font-size:15px;color:var(--muted);line-height:1.85;}
.feature-body .meta{display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--dim);margin-top:16px;}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:var(--bg-2);border:1px solid var(--line-2);border-radius:14px;
  margin-bottom:12px;overflow:hidden;transition:border-color .25s ease;
}
.faq-item:hover{border-color:#3a3357;}
.faq-item[open]{border-color:var(--brand);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-plus{position:relative;width:14px;height:14px;flex:0 0 auto;transition:transform .3s ease;}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--mint);border-radius:2px;}
.faq-plus::before{top:6px;left:0;width:14px;height:2px;}
.faq-plus::after{left:6px;top:0;width:2px;height:14px;}
.faq-item[open] .faq-plus{transform:rotate(45deg);}
.faq-body{padding:0 22px 20px 32px;font-size:15px;color:var(--muted);line-height:1.9;}
.faq-body p{margin:0;}

/* ---------- cta ---------- */
.cta-banner{
  position:relative;overflow:hidden;border-radius:var(--r-lg);border:1px solid rgba(109,59,245,.4);
  background-color:var(--bg-2);
  background-image:linear-gradient(120deg,rgba(109,59,245,.34),rgba(16,14,23,.35) 55%,rgba(16,14,23,.85)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  padding:48px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-banner::before{
  content:"";position:absolute;inset:0;opacity:.07;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.8) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.8) 1px,transparent 1px);
  background-size:48px 48px;
}
.cta-banner > *{position:relative;z-index:1;}
.cta-copy{max-width:620px;}
.cta-copy h2{font-size:30px;font-weight:800;}
.cta-copy p{margin:12px 0 0;color:#D8D3EC;font-size:15px;line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:#0C0A13;padding:64px 0 28px;margin-top:24px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.85;max-width:34em;}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text);}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--muted);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--dim);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .cover-grid{grid-template-columns:repeat(2,1fr);}
  .info-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
  .hero-narrow h1{font-size:44px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .site-header{height:62px;}
  .header-inner{grid-template-columns:auto 1fr auto;}
  .left-cluster,.right-cluster{display:none;}
  .nav-toggle{display:flex;}
  .mobile-cta{display:inline-flex;padding:8px 14px;font-size:14px;}
  .drawer{display:block;}
  .logo{justify-self:center;}
  .page-hero{padding:118px 0 56px;}
  .hero-narrow h1{font-size:36px;}
  .section-head h2{font-size:27px;}
  .feature{grid-template-columns:1fr;gap:20px;}
  .feature:nth-child(even) .feature-media{order:0;}
  .cta-banner{padding:36px 28px;}
  .cta-copy h2{font-size:25px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .page-hero{padding:104px 0 48px;}
  .hero-narrow h1{font-size:30px;line-height:1.2;}
  .hero-sub{font-size:15.5px;margin-top:16px;}
  .crumb{margin-bottom:24px;}
  .hero-stats{margin-top:24px;font-size:13px;}
  .hero-stats li{padding:0 12px;}
  .hero-stats li:nth-child(3){border-left:0;padding-left:0;}
  .cover-grid{grid-template-columns:1fr;}
  .info-grid{grid-template-columns:1fr;}
  .section-head h2{font-size:24px;}
  .faq-item summary{font-size:16px;padding:16px 18px;}
  .faq-body{padding:0 18px 18px 26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-copy h2{font-size:22px;}
  .feature-body h3{font-size:19px;}
}
@media (max-width:480px){
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .btn{padding:12px 18px;}
  .pager .page-item{padding:0 10px;}
  .footer-grid{grid-template-columns:1fr;}
}

/* roulang page: category3 */
:root{
  --bg:#100E17;
  --bg-2:#191625;
  --bg-3:#221E33;
  --violet:#6D3BF5;
  --violet-deep:#5A28E0;
  --violet-light:#8A5BFF;
  --mint:#22D3A8;
  --orange:#FF9A3C;
  --text:#F4F2FF;
  --text-2:#A8A1BF;
  --muted:#5B5570;
  --line:rgba(255,255,255,.08);
  --line-strong:#2A2540;
  --r-btn:12px;
  --r-card:18px;
  --r-lg:24px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-hover:0 20px 44px -22px rgba(109,59,245,.55);
  --container:1200px;
  --pad:32px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
::selection{background:rgba(109,59,245,.45);}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--pad);
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(16,14,23,.94);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:var(--bg);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:76px;
  transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:62px;}
.left-cluster,.right-cluster{
  display:flex;
  align-items:center;
  gap:26px;
}
.right-cluster{justify-content:flex-end;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:6px 0;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:100%;
  bottom:0;
  height:2px;
  background:linear-gradient(90deg,var(--violet),var(--mint));
  transition:right .25s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{right:0;}
.nav-link.is-active{color:var(--text);font-weight:600;}
.nav-link.is-active::after{right:0;}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  justify-self:center;
}
.logo-mark{
  width:26px;
  height:26px;
  flex:0 0 26px;
  background:linear-gradient(135deg,var(--violet),var(--mint));
  clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);
}
.logo-text{
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.nav-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  width:40px;
  height:40px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line-strong);
  border-radius:10px;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:var(--text);
  transition:transform .2s ease,opacity .2s ease;
}
.mobile-cta{display:none;}
.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--bg-2);
  padding:18px var(--pad) 24px;
}
.drawer.is-open{display:block;}
.drawer-group{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--muted);
  margin:12px 0 8px;
}
.drawer-group:first-child{margin-top:0;}
.drawer-link{
  display:block;
  padding:12px 4px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  font-size:15px;
}
.drawer-link:hover{color:var(--text);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(.98);}
.btn-primary{
  background:linear-gradient(135deg,var(--violet) 0%,var(--violet-light) 100%);
  color:#fff;
  box-shadow:0 14px 30px -18px rgba(109,59,245,.9);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 18px 36px -16px rgba(109,59,245,.85);
}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text-2);
}
.btn-ghost:hover{
  border-color:var(--violet);
  color:#fff;
  transform:translateY(-2px);
}
.btn-accent{
  background:transparent;
  border-color:var(--orange);
  color:var(--orange);
}
.btn-accent:hover{
  background:rgba(255,154,60,.12);
  transform:translateY(-2px);
}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn:disabled{opacity:.45;pointer-events:none;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{
  max-width:720px;
  margin-bottom:44px;
}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--mint);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:1px;
  background:var(--mint);
}
h1{font-size:52px;line-height:1.15;font-weight:800;letter-spacing:-.02em;}
h2{font-size:34px;line-height:1.25;font-weight:700;letter-spacing:-.015em;}
h3{font-size:22px;line-height:1.35;font-weight:600;}
.lead{
  color:var(--text-2);
  font-size:17px;
  margin-top:18px;
  max-width:40em;
}
p{color:var(--text-2);}
p + p{margin-top:1em;}
.strong{color:var(--text);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  line-height:1.6;
  font-weight:600;
  letter-spacing:.02em;
}
.badge-violet{background:rgba(109,59,245,.12);color:#B79BFF;}
.badge-mint{background:rgba(34,211,168,.12);color:var(--mint);}
.badge-orange{background:rgba(255,154,60,.12);color:var(--orange);}

/* ---------- 卡片 ---------- */
.card{
  position:relative;
  background:var(--bg-2);
  border:1px solid var(--line-strong);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card:hover{
  transform:translateY(-4px);
  border-color:var(--violet);
  box-shadow:var(--shadow-card),var(--shadow-hover);
}
.card-title{font-size:18px;font-weight:700;color:var(--text);margin-bottom:8px;}
.card-text{font-size:14px;color:var(--text-2);line-height:1.75;}
.card-foot{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-2);
}
.cut-corner{overflow:hidden;}
.cut-corner::after{
  content:"";
  position:absolute;
  top:-1px;
  right:-1px;
  width:20px;
  height:20px;
  background:linear-gradient(225deg,transparent 0 50%,var(--violet) 50% 100%);
  pointer-events:none;
}
.cut-corner.accent::after{
  background:linear-gradient(225deg,transparent 0 50%,var(--orange) 50% 100%);
}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:24px;}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(16,14,23,.86) 0%,rgba(16,14,23,.96) 62%,var(--bg) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:38px 38px;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  padding:104px 0 84px;
  max-width:820px;
}
.hero h1{margin-top:18px;}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0;
  margin-top:34px;
  font-size:14px;
  color:var(--text-2);
}
.hero-meta span{
  padding:0 18px;
  border-left:1px solid var(--line);
}
.hero-meta span:first-child{padding-left:0;border-left:0;}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.breadcrumb{
  position:relative;
  padding-top:26px;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--mint);}
.breadcrumb .sep{margin:0 8px;}

/* ---------- 开通步骤时间线 ---------- */
.guide-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  gap:48px;
  align-items:start;
}
.timeline{position:relative;}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:52px minmax(0,1fr);
  gap:22px;
  padding-bottom:38px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:25px;
  top:52px;
  bottom:0;
  width:1px;
  background:var(--line);
}
.tl-item:last-child::before{display:none;}
.tl-num{
  width:52px;
  height:52px;
  border-radius:50%;
  display:grid;
  place-items:center;
  font-weight:800;
  font-size:16px;
  color:var(--text);
  background:var(--bg-3);
  border:1px solid var(--line-strong);
  position:relative;
  z-index:1;
}
.tl-item.is-current .tl-num{
  border-color:var(--violet);
  background:linear-gradient(135deg,rgba(109,59,245,.28),rgba(109,59,245,.05));
  color:#fff;
}
.tl-body{padding-top:8px;}
.tl-body h3{margin-bottom:8px;}
.tl-body p{font-size:15px;line-height:1.85;}
.tl-tip{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:14px;
}
.tl-tip .badge{font-weight:500;}

/* ---------- 价格卡 ---------- */
.price-card{
  position:sticky;
  top:104px;
  background:var(--bg-2);
  border:1px solid var(--violet);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:0 24px 60px -30px rgba(109,59,245,.7);
}
.price-card .plan-name{
  font-size:20px;
  font-weight:700;
  margin-top:12px;
}
.price-note{
  font-size:13px;
  color:var(--text-2);
  margin-top:6px;
}
.price-amount{
  display:flex;
  align-items:baseline;
  gap:8px;
  margin:20px 0 6px;
  padding:16px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.price-amount .num{
  font-size:30px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--text);
}
.price-amount .unit{font-size:13px;color:var(--text-2);}
.price-list{margin:18px 0 22px;}
.price-list li{
  position:relative;
  padding-left:22px;
  font-size:14px;
  color:var(--text-2);
  margin-bottom:10px;
}
.price-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--mint);
}
.price-foot{
  font-size:12.5px;
  color:var(--muted);
  margin-top:14px;
  line-height:1.7;
}

/* ---------- 准备清单（图文） ---------- */
.split{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:48px;
  align-items:center;
}
.split-media{
  border-radius:var(--r-lg);
  border:1px solid var(--line-strong);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;}
.check-list{margin-top:26px;}
.check-list li{
  position:relative;
  padding-left:30px;
  margin-bottom:16px;
  font-size:15px;
  color:var(--text-2);
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:8px;
  width:14px;
  height:14px;
  border-radius:4px;
  background:rgba(34,211,168,.16);
  border:1px solid var(--mint);
}
.check-list li strong{color:var(--text);font-weight:600;}

/* ---------- 表格 ---------- */
.table-wrap{
  border:1px solid var(--line-strong);
  border-radius:var(--r-card);
  background:var(--bg-2);
  overflow-x:auto;
  box-shadow:var(--shadow-card);
}
table{
  width:100%;
  border-collapse:collapse;
  min-width:640px;
  font-size:14.5px;
}
thead th{
  position:sticky;
  top:0;
  background:var(--bg-3);
  color:var(--text);
  font-weight:700;
  font-size:14px;
  text-align:left;
  padding:16px 20px;
  border-bottom:1px solid var(--line-strong);
  white-space:nowrap;
}
tbody td{
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  color:var(--text-2);
  vertical-align:top;
}
tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
tbody tr:last-child td{border-bottom:0;}
tbody td:first-child{
  color:var(--text);
  font-weight:600;
  white-space:nowrap;
}
.cell-yes{color:var(--mint);font-weight:600;}
.cell-no{color:var(--muted);}
.table-note{
  font-size:13px;
  color:var(--muted);
  margin-top:14px;
}

/* ---------- 方案对比卡 ---------- */
.plan-card{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.plan-card .plan-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.plan-card .plan-price{
  font-size:24px;
  font-weight:800;
  color:var(--text);
}
.plan-card ul li{
  position:relative;
  padding-left:20px;
  font-size:14px;
  color:var(--text-2);
  margin-bottom:8px;
}
.plan-card ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--violet);
}
.plan-card .card-foot{margin-top:auto;}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;}
.faq-item{
  border-bottom:1px solid var(--line);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 0;
  font-size:17px;
  font-weight:600;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  font-size:22px;
  font-weight:400;
  color:var(--mint);
  transition:transform .25s ease;
  flex:0 0 auto;
  line-height:1;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-answer{
  padding:0 32px 24px;
  font-size:15px;
  line-height:1.9;
  color:var(--text-2);
}
.faq-answer p{font-size:15px;}

/* ---------- CTA 横幅 ---------- */
.cta-banner{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line-strong);
  background:linear-gradient(115deg,rgba(109,59,245,.42) 0%,rgba(109,59,245,.08) 46%,rgba(16,14,23,0) 100%),var(--bg-2);
  padding:52px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-banner::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:34px 34px;
  pointer-events:none;
}
.cta-banner > *{position:relative;}
.cta-banner h2{font-size:30px;}
.cta-banner p{margin-top:10px;max-width:34em;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-2);
  border-top:1px solid var(--line);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand p{
  font-size:14px;
  margin-top:18px;
  max-width:34em;
  line-height:1.85;
}
.footer-brand .logo{justify-self:start;}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--text);
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col li{margin-bottom:12px;}
.footer-col a{
  font-size:14px;
  color:var(--text-2);
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--mint);}
.footer-bottom{
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  h1{font-size:44px;}
  .guide-layout{grid-template-columns:minmax(0,1fr) 310px;gap:36px;}
}
@media (max-width:1023px){
  :root{--pad:26px;}
  h1{font-size:38px;}
  h2{font-size:28px;}
  .section{padding:72px 0;}
  .header-inner{height:68px;}
  .left-cluster,.right-cluster{display:none;}
  .nav-toggle{display:flex;justify-self:start;}
  .mobile-cta{display:inline-flex;justify-self:end;}
  .header-inner{grid-template-columns:auto 1fr auto;}
  .guide-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .price-card{position:static;order:2;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .split{grid-template-columns:minmax(0,1fr);gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--pad:20px;}
  body{font-size:15.5px;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:18px;}
  .section{padding:56px 0;}
  .hero-inner{padding:76px 0 62px;}
  .hero-actions .btn{width:100%;}
  .hero-meta{font-size:13px;}
  .hero-meta span{padding:0 12px;}
  .grid-2,.grid-3{grid-template-columns:minmax(0,1fr);}
  .tl-item{grid-template-columns:44px minmax(0,1fr);gap:16px;}
  .tl-num{width:44px;height:44px;font-size:15px;}
  .tl-item::before{left:21px;top:44px;}
  .cta-banner{padding:34px 24px;}
  .cta-banner h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-answer{padding:0 0 22px;}
}
@media (max-width:480px){
  .btn{padding:12px 20px;}
  .price-card{padding:22px;}
}

/* roulang page: category4 */
:root{
  --bg:#100E17;
  --bg-block:#191625;
  --panel:#221E33;
  --primary:#6D3BF5;
  --primary-deep:#5A28E0;
  --primary-light:#8A5BFF;
  --mint:#22D3A8;
  --orange:#FF9A3C;
  --text:#F4F2FF;
  --text-2:#A8A1BF;
  --line:rgba(255,255,255,.08);
  --line-2:#2A2540;
  --muted:#5B5570;
  --r-sm:12px;
  --r-md:18px;
  --r-lg:24px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-hover:0 20px 44px -22px rgba(109,59,245,.55);
  --container:1200px;
  --pad:32px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.25;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:6px;}

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--pad);
  width:100%;
}

/* ===== 通用组件 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(.98);}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);
  color:#fff;
  box-shadow:0 12px 28px -18px rgba(109,59,245,.9);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px -16px rgba(109,59,245,.85);}
.btn-ghost{
  background:transparent;
  border-color:var(--line-2);
  color:var(--text-2);
}
.btn-ghost:hover{border-color:var(--primary);color:#fff;transform:translateY(-2px);}
.btn-accent{
  background:transparent;
  border-color:rgba(255,154,60,.55);
  color:var(--orange);
}
.btn-accent:hover{background:rgba(255,154,60,.1);transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--mint);
  font-size:14px;
  font-weight:600;
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,color .2s ease;
}
.btn-text:hover{border-color:var(--mint);}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  line-height:1.6;
}
.badge-primary{background:rgba(109,59,245,.14);color:#B79BFF;}
.badge-mint{background:rgba(34,211,168,.14);color:var(--mint);}
.badge-orange{background:rgba(255,154,60,.14);color:var(--orange);}
.badge-plain{background:rgba(255,255,255,.05);color:var(--text-2);}

.card{
  background:var(--bg-block);
  border:1px solid var(--line-2);
  border-radius:var(--r-md);
  padding:24px;
  box-shadow:var(--shadow);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--shadow-hover);}

.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:34px;font-weight:700;letter-spacing:-.01em;}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15.5px;margin-bottom:0;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--mint);
  letter-spacing:.06em;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:18px;height:2px;
  background:var(--mint);
  border-radius:2px;
}
.grid-texture{
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:44px 44px;
}

/* ===== 头部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(16,14,23,.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,height .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:var(--bg);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:76px;
  transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:62px;}
.left-cluster,.right-cluster{
  display:flex;
  align-items:center;
  gap:22px;
  flex:1 1 0;
}
.left-cluster{justify-content:flex-start;}
.right-cluster{justify-content:flex-end;}
.nav-link{
  font-size:14.5px;
  color:var(--text-2);
  padding:6px 0;
  position:relative;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--primary);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:#fff;}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:#fff;}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.logo-mark{
  width:26px;height:26px;
  display:inline-block;
  background:linear-gradient(135deg,var(--primary) 0%,var(--mint) 100%);
  clip-path:polygon(0 0,72% 0,100% 28%,100% 100%,28% 100%,0 72%);
  border-radius:4px;
}
.logo-text{
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.nav-toggle{
  display:none;
  width:42px;height:38px;
  background:transparent;
  border:1px solid var(--line-2);
  border-radius:10px;
  padding:9px 10px;
  cursor:pointer;
  flex-direction:column;
  justify-content:space-between;
}
.nav-toggle span{
  display:block;
  height:2px;
  background:var(--text);
  border-radius:2px;
}
.mobile-cta{display:none;}
.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--bg);
  padding:18px var(--pad) 26px;
}
.drawer.is-open{display:block;}
.drawer-group{
  font-size:12px;
  color:var(--muted);
  letter-spacing:.12em;
  margin:14px 0 8px;
}
.drawer-link{
  display:block;
  padding:12px 0;
  font-size:15px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer-link:hover{color:#fff;}
.drawer .btn{margin-top:18px;}

/* ===== Hero ===== */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:84px 0 76px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 88%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 88%);
  pointer-events:none;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-140px;top:-120px;
  width:420px;height:420px;
  background:radial-gradient(circle,rgba(109,59,245,.32),transparent 68%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.page-hero h1{
  font-size:52px;
  font-weight:800;
  line-height:1.15;
  letter-spacing:-.02em;
  max-width:900px;
}
.page-hero .hero-sub{
  margin-top:18px;
  font-size:17px;
  color:var(--text-2);
  max-width:660px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:24px;
  margin-top:34px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.hero-meta-item{
  display:flex;
  flex-direction:column;
  gap:4px;
  padding-right:24px;
  border-right:1px solid var(--line);
}
.hero-meta-item:last-child{border-right:none;padding-right:0;}
.hero-meta-item strong{font-size:22px;font-weight:800;color:#fff;line-height:1.2;}
.hero-meta-item span{font-size:13px;color:var(--text-2);}

/* ===== 近期重点 ===== */
.focus-wrap{
  display:grid;
  grid-template-columns:minmax(0,420px) minmax(0,1fr);
  gap:44px;
  align-items:center;
  background:var(--bg-block);
  border:1px solid var(--line-2);
  border-radius:var(--r-lg);
  padding:28px;
  position:relative;
  overflow:hidden;
}
.focus-wrap::before{
  content:"";
  position:absolute;
  left:0;top:0;
  width:150px;height:150px;
  background:radial-gradient(circle at top left,rgba(34,211,168,.18),transparent 70%);
  pointer-events:none;
}
.focus-media{
  position:relative;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid rgba(109,59,245,.4);
  aspect-ratio:16/10;
}
.focus-media img{width:100%;height:100%;object-fit:cover;}
.focus-media::after{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:32px 32px;
  pointer-events:none;
}
.focus-body h2{font-size:26px;font-weight:700;margin-top:14px;}
.focus-body p{color:var(--text-2);font-size:15px;margin:14px 0 22px;max-width:560px;}
.focus-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ===== 时间轴主区 ===== */
.timeline-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;
  align-items:start;
}
.timeline-day{
  margin-bottom:42px;
}
.day-head{
  display:flex;
  align-items:center;
  gap:14px;
  margin-bottom:22px;
}
.day-head h3{
  font-size:19px;
  font-weight:700;
}
.day-head .day-line{
  flex:1;
  height:1px;
  background:var(--line);
}
.day-head .day-count{
  font-size:13px;
  color:var(--text-2);
}
.timeline{
  position:relative;
  padding-left:30px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:6px;
  top:8px;
  bottom:0;
  width:1px;
  background:var(--line);
}
.tl-item{
  position:relative;
  padding-bottom:28px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:-30px;
  top:7px;
  width:13px;height:13px;
  border-radius:50%;
  background:var(--bg);
  border:2px solid var(--primary);
  box-shadow:0 0 0 4px rgba(109,59,245,.14);
}
.tl-item.is-mint::before{border-color:var(--mint);box-shadow:0 0 0 4px rgba(34,211,168,.14);}
.tl-item.is-orange::before{border-color:var(--orange);box-shadow:0 0 0 4px rgba(255,154,60,.14);}
.tl-title{
  font-size:17px;
  font-weight:600;
  color:var(--text);
  transition:color .2s ease;
}
.tl-title:hover{color:var(--primary-light);}
.tl-desc{
  margin:8px 0 12px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
  max-width:640px;
}
.tl-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  font-size:13px;
  color:var(--muted);
}
.tl-meta .arrow{
  color:var(--primary-light);
  font-weight:600;
}

/* ===== 侧栏 ===== */
.side-col{position:relative;}
.side-panel{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:24px;
}
.panel{
  background:var(--panel);
  border:1px solid var(--line-2);
  border-radius:var(--r-md);
  padding:22px;
}
.panel h4{
  font-size:16px;
  font-weight:700;
  margin-bottom:6px;
}
.panel .panel-note{
  font-size:13px;
  color:var(--text-2);
  margin-bottom:16px;
}
.tag-cloud{
  display:flex;
  flex-wrap:wrap;
  gap:9px;
}
.tag-cloud a{
  display:inline-flex;
  align-items:center;
  padding:6px 13px;
  border-radius:999px;
  font-size:13px;
  color:var(--text-2);
  background:rgba(255,255,255,.04);
  border:1px solid transparent;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.tag-cloud a:hover{color:#fff;border-color:var(--primary);background:rgba(109,59,245,.12);}
.tag-cloud a.is-active{
  background:var(--primary);
  color:#fff;
  border-color:var(--primary);
}
.side-list li{
  border-bottom:1px solid var(--line);
}
.side-list li:last-child{border-bottom:none;}
.side-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:11px 0;
  font-size:14px;
  color:var(--text-2);
  transition:color .2s ease,padding-left .2s ease;
}
.side-list a:hover{color:#fff;padding-left:6px;}
.side-list .dot{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--mint);
  flex:0 0 auto;
}
.side-cta{
  background:linear-gradient(150deg,rgba(109,59,245,.28),rgba(34,211,168,.12));
  border:1px solid rgba(109,59,245,.45);
  border-radius:var(--r-md);
  padding:22px;
}
.side-cta h4{font-size:16px;font-weight:700;}
.side-cta p{font-size:13.5px;color:var(--text-2);margin:10px 0 18px;}

/* ===== 更新节奏 ===== */
.rhythm-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.rhythm-card{
  background:var(--bg-block);
  border:1px solid var(--line-2);
  border-radius:var(--r-md);
  padding:26px 24px;
  position:relative;
  overflow:hidden;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.rhythm-card::after{
  content:"";
  position:absolute;
  right:-1px;top:-1px;
  width:34px;height:34px;
  background:linear-gradient(225deg,rgba(109,59,245,.55),transparent 65%);
  clip-path:polygon(100% 0,100% 100%,0 0);
}
.rhythm-card:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.rhythm-num{
  font-size:13px;
  font-weight:700;
  color:var(--mint);
  letter-spacing:.1em;
  margin-bottom:14px;
}
.rhythm-card h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.rhythm-card p{font-size:14px;color:var(--text-2);margin:0;}

/* ===== 订阅提醒 ===== */
.subscribe{
  background:var(--bg-block);
  border:1px solid var(--line-2);
  border-radius:var(--r-lg);
  padding:38px;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,420px);
  gap:40px;
  align-items:center;
  position:relative;
  overflow:hidden;
}
.subscribe::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:38px 38px;
  pointer-events:none;
}
.subscribe > *{position:relative;z-index:2;}
.subscribe h2{font-size:28px;font-weight:700;}
.subscribe p{color:var(--text-2);font-size:15px;margin:12px 0 0;max-width:520px;}
.form-field{margin-bottom:14px;}
.form-field label{
  display:block;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:8px;
}
.form-field input{
  width:100%;
  background:var(--bg-block);
  border:1px solid var(--line-2);
  border-radius:var(--r-sm);
  padding:14px 16px;
  color:var(--text);
  font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field input::placeholder{color:var(--muted);}
.form-field input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 2px rgba(34,211,168,.35);
}
.form-hint{font-size:12.5px;color:var(--muted);margin:10px 0 0;}

/* ===== FAQ ===== */
.faq-list{
  max-width:860px;
  margin:0 auto;
}
.faq-item{
  border-bottom:1px solid var(--line);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  padding:22px 0;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary-light);}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:50%;
  border:1px solid var(--line-2);
  color:var(--mint);
  font-size:16px;
  line-height:24px;
  text-align:center;
  transition:transform .25s ease,border-color .25s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);border-color:var(--primary);}
.faq-answer{
  padding:0 0 24px 32px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.9;
  max-width:720px;
}

/* ===== CTA ===== */
.cta-band{
  position:relative;
  overflow:hidden;
  border:1px solid rgba(109,59,245,.4);
  border-radius:var(--r-lg);
  padding:48px;
  background:linear-gradient(115deg,rgba(109,59,245,.5) 0%,rgba(109,59,245,.12) 46%,rgba(16,14,23,0) 100%);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:40px 40px;
  pointer-events:none;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-40px;bottom:-40px;
  width:180px;height:180px;
  background:linear-gradient(135deg,rgba(255,154,60,.28),transparent 70%);
  clip-path:polygon(100% 0,100% 100%,0 100%);
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:30px;font-weight:700;max-width:560px;}
.cta-band p{color:var(--text-2);margin:14px 0 0;font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ===== 页脚 ===== */
.site-footer{
  border-top:1px solid var(--line);
  background:#0C0A13;
  padding:64px 0 26px;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr repeat(3,1fr);
  gap:40px;
  padding-bottom:42px;
  border-bottom:1px solid var(--line);
}
.footer-brand p{
  margin-top:18px;
  font-size:14px;
  color:var(--text-2);
  max-width:340px;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  margin-bottom:16px;
  color:var(--text);
}
.footer-col li{margin-bottom:10px;}
.footer-col a{
  font-size:14px;
  color:var(--text-2);
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--mint);}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:13px;
  color:var(--muted);
}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  .timeline-layout{grid-template-columns:minmax(0,1fr) 270px;gap:36px;}
}
@media (max-width:1023px){
  :root{--pad:24px;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .page-hero{padding:60px 0 54px;}
  .page-hero h1{font-size:38px;}
  .section-head h2{font-size:28px;}
  .focus-wrap{grid-template-columns:minmax(0,1fr);gap:28px;}
  .timeline-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .side-panel{position:static;}
  .rhythm-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .subscribe{grid-template-columns:minmax(0,1fr);gap:26px;padding:30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:899px){
  .left-cluster,.right-cluster{display:none;}
  .nav-toggle{display:flex;}
  .mobile-cta{display:inline-flex;margin-left:auto;}
  .header-inner{justify-content:space-between;gap:12px;}
  .logo{position:absolute;left:50%;transform:translateX(-50%);}
  .header-inner{position:relative;}
}
@media (max-width:767px){
  :root{--pad:20px;}
  body{font-size:15.5px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .page-hero h1{font-size:30px;}
  .page-hero .hero-sub{font-size:15.5px;}
  .hero-meta{gap:18px;}
  .hero-meta-item{padding-right:18px;}
  .hero-meta-item strong{font-size:19px;}
  .section-head h2{font-size:24px;}
  .logo-text{font-size:15px;}
  .rhythm-grid{grid-template-columns:minmax(0,1fr);}
  .cta-band{padding:32px 24px;}
  .cta-band h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
  .timeline{padding-left:24px;}
  .tl-item::before{left:-24px;width:11px;height:11px;}
  .faq-item summary{font-size:16px;}
  .faq-answer{padding-left:0;}
}
@media (max-width:520px){
  .btn{width:100%;}
  .hero-meta-item{border-right:none;padding-right:0;width:100%;}
  .focus-actions .btn,.cta-actions .btn{width:100%;}
  .mobile-cta{width:auto;}
}