/* roulang page: index */
:root{
  --bg-0:#060B18;
  --bg-1:#0B1426;
  --bg-2:#101B33;
  --glass:rgba(255,255,255,.055);
  --glass-hover:rgba(255,255,255,.085);
  --line:rgba(255,255,255,.08);
  --line-lit:rgba(34,211,238,.45);
  --c-primary:#22D3EE;
  --c-accent:#6D5CFF;
  --c-warm:#FFB84D;
  --tx-1:#E8EEF9;
  --tx-2:#A9B6CE;
  --tx-3:#6E7C99;
  --ok:#34D399;
  --warn:#F87171;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --sh-card:0 12px 32px rgba(0,0,0,.45);
  --sh-hover:0 20px 48px rgba(0,0,0,.55),0 0 0 1px var(--line-lit);
  --sh-glow:0 0 0 1px rgba(34,211,238,.5),0 10px 28px rgba(34,211,238,.28);
  --ease:200ms cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:#060B18;
  --bs-body-color:#A9B6CE;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-primary-rgb:34,211,238;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:68px 68px;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--c-accent);text-decoration:none}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
}
h1,h2,h3,h4,h5{color:var(--tx-1);line-height:1.25;letter-spacing:.2px;margin:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{max-width:1320px;padding-left:24px;padding-right:24px;margin:0 auto;width:100%}
@media(max-width:575.98px){.container{padding-left:16px;padding-right:16px}}
main{position:relative;z-index:1}
.section{padding:clamp(56px,7vw,96px) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:700}
.section-head h2 .dot{color:var(--c-primary)}
.section-sub{color:var(--tx-3);font-size:14px;margin-top:8px;max-width:640px}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-primary);border-bottom:1px solid transparent;transition:var(--ease)}
.link-more:hover{border-bottom-color:var(--c-primary)}
.link-more span{transition:transform var(--ease)}
.link-more:hover span{transform:translateX(4px)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(6,11,24,.72);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.7),rgba(109,92,255,.7),transparent);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(34,211,238,.22),rgba(109,92,255,.22));
  border:1px solid rgba(34,211,238,.42);
  box-shadow:0 0 18px rgba(34,211,238,.22);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:18px;color:var(--tx-1);letter-spacing:.3px}
.brand-text em{font-style:normal;font-size:13px;color:var(--c-primary);letter-spacing:.6px}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{
  position:relative;
  display:inline-flex;align-items:center;
  height:40px;padding:0 14px;
  border-radius:10px;
  color:var(--tx-2);
  font-size:15px;
  white-space:nowrap;
  transition:var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.045)}
.nav-links a.active{color:var(--c-primary)}
.nav-links a.active::after{
  content:"";
  position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
  box-shadow:0 0 12px rgba(34,211,238,.85);
}
.nav-cta{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 20px;border-radius:12px;font-size:15px;font-weight:600;color:#04121A;background:linear-gradient(135deg,var(--c-primary),#4EC5E8);box-shadow:var(--sh-glow);transition:var(--ease);white-space:nowrap}
.nav-cta:hover{color:#04121A;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,211,238,.65),0 14px 34px rgba(34,211,238,.38)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--glass);color:var(--tx-1);align-items:center;justify-content:center;cursor:pointer}
.nav-toggle svg{width:20px;height:20px}
.nav-drawer{
  position:fixed;
  inset:0;
  z-index:1040;
  background:rgba(6,11,24,.96);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  display:flex;
  flex-direction:column;
  padding:20px 20px 28px;
  transform:translateY(-100%);
  opacity:0;
  visibility:hidden;
  transition:transform 260ms cubic-bezier(.2,.7,.3,1),opacity 260ms;
}
.nav-drawer.open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--glass);color:var(--tx-1);display:grid;place-items:center;cursor:pointer}
.drawer-links{display:flex;flex-direction:column;gap:6px;margin-top:8px}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 16px;border-radius:12px;
  border:1px solid transparent;
  color:var(--tx-1);font-size:16px;
  background:rgba(255,255,255,.03);
  transition:var(--ease);
}
.drawer-links a:hover,.drawer-links a.active{background:rgba(34,211,238,.1);border-color:rgba(34,211,238,.35);color:var(--c-primary)}
.drawer-links a::after{content:"›";font-size:20px;color:var(--tx-3)}
.drawer-cta{margin-top:auto;display:flex;align-items:center;justify-content:center;height:52px;border-radius:12px;font-weight:600;color:#04121A;background:linear-gradient(135deg,var(--c-primary),var(--c-accent));box-shadow:var(--sh-glow)}

/* ---------- Hero ---------- */
.hero{padding-top:clamp(16px,2.4vw,28px)}
.hero-shell{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  min-height:clamp(480px,72vh,720px);
  display:flex;
  align-items:center;
  box-shadow:var(--sh-card);
}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-mask{
  position:absolute;inset:0;z-index:1;
  background:
    radial-gradient(60% 72% at 12% 52%,rgba(34,211,238,.20),transparent 66%),
    radial-gradient(52% 62% at 88% 18%,rgba(109,92,255,.16),transparent 72%),
    linear-gradient(to top,var(--bg-0) 0%,rgba(6,11,24,.82) 42%,rgba(6,11,24,.42) 100%);
}
.hero-content{position:relative;z-index:2;max-width:680px;padding:clamp(28px,5vw,56px)}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  font-size:12px;letter-spacing:.4px;color:var(--tx-1);
  background:var(--glass);border:1px solid var(--line);
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--c-warm);box-shadow:0 0 10px var(--c-warm);display:block}
.hero h1{
  font-size:clamp(30px,4.4vw,44px);
  font-weight:800;
  margin:18px 0 14px;
  letter-spacing:.4px;
  text-shadow:0 6px 30px rgba(0,0,0,.6);
}
.hero h1 span{color:var(--c-primary)}
.hero-lead{font-size:clamp(15px,1.5vw,17px);color:var(--tx-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.btn-primary-x{
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 26px;border-radius:12px;
  font-size:15px;font-weight:600;color:#04121A;
  background:linear-gradient(135deg,var(--c-primary),#4EC5E8);
  box-shadow:var(--sh-glow);
  border:none;cursor:pointer;
  transition:var(--ease);
}
.btn-primary-x:hover{color:#04121A;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,211,238,.7),0 16px 38px rgba(34,211,238,.4)}
.btn-ghost-x{
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 24px;border-radius:12px;
  font-size:15px;font-weight:600;color:var(--tx-1);
  background:var(--glass);border:1px solid var(--line);
  cursor:pointer;transition:var(--ease);
}
.btn-ghost-x:hover{color:#fff;background:var(--glass-hover);border-color:var(--line-lit);transform:translateY(-2px)}
.hero-stats{
  display:flex;align-items:center;gap:0;
  margin-top:32px;padding:14px 4px;
  border:1px solid var(--line);border-radius:14px;
  background:rgba(255,255,255,.035);
  max-width:520px;
}
.hero-stats div{flex:1;text-align:center;padding:0 8px}
.hero-stats div+div{border-left:1px solid var(--line)}
.hero-stats b{display:block;font-size:20px;color:var(--tx-1);font-variant-numeric:tabular-nums;font-weight:700}
.hero-stats span{font-size:12px;color:var(--tx-3)}
.hero-aside{
  position:absolute;right:clamp(20px,3vw,40px);bottom:clamp(20px,3vw,40px);
  z-index:3;width:280px;
  padding:20px;border-radius:var(--r-md);
  background:rgba(11,20,38,.72);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:var(--sh-card);
}
.hero-aside h4{font-size:15px;margin-bottom:10px}
.hero-aside p{font-size:13px;line-height:1.7;color:var(--tx-2)}
.hero-aside a{display:inline-flex;align-items:center;gap:6px;font-size:13px;margin-top:12px;font-weight:600}

/* ---------- 横滑轨道 ---------- */
.track-wrap{position:relative}
.track{
  display:flex;gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding-bottom:14px;
  scrollbar-width:none;
}
.track::-webkit-scrollbar{height:3px;background:rgba(255,255,255,.05);border-radius:999px}
.track::-webkit-scrollbar-thumb{background:linear-gradient(90deg,var(--c-primary),var(--c-accent));border-radius:999px}
.track-card{
  flex:0 0 260px;
  scroll-snap-align:start;
  border-radius:var(--r-md);
  background:var(--bg-2);
  border:1px solid var(--line);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:var(--ease);
  color:inherit;
  display:block;
}
.track-card:hover{transform:translateY(-6px);border-color:var(--line-lit);box-shadow:var(--sh-hover);color:inherit}
.track-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-1)}
.track-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms cubic-bezier(.2,.7,.3,1)}
.track-card:hover .track-thumb img{transform:scale(1.04)}
.track-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(6,11,24,.85),transparent 62%)}
.track-badge{position:absolute;left:10px;top:10px;z-index:2;height:24px;padding:0 10px;border-radius:999px;display:inline-flex;align-items:center;font-size:11px;color:var(--tx-1);background:rgba(6,11,24,.7);border:1px solid var(--line)}
.track-body{padding:14px 16px 16px}
.track-body h3{font-size:15px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.track-time{margin-top:8px;font-size:12px;color:var(--tx-3);font-variant-numeric:tabular-nums}
.track-arrows{display:flex;gap:10px}
.track-arrows button{
  width:48px;height:48px;border-radius:50%;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--tx-1);
  display:grid;place-items:center;
  cursor:pointer;
  transition:var(--ease);
}
.track-arrows button:hover{border-color:var(--line-lit);background:var(--glass-hover);color:var(--c-primary)}
.track-arrows button:disabled{opacity:.35;cursor:not-allowed}
.track-arrows svg{width:18px;height:18px}
.track-progress{height:2px;margin-top:6px;border-radius:999px;background:rgba(255,255,255,.06);overflow:hidden}
.track-progress i{display:block;height:100%;width:32%;border-radius:999px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));transition:width var(--ease)}

/* ---------- 最新信息 CMS ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;gap:12px;
  padding:22px;
  border-radius:var(--r-md);
  background:var(--bg-2);
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
  color:inherit;
  transition:var(--ease);
  min-height:180px;
}
.post-card:hover{transform:translateY(-6px);border-color:var(--line-lit);box-shadow:var(--sh-hover);color:inherit}
.cat-pill{
  display:inline-flex;align-items:center;
  align-self:flex-start;
  height:24px;padding:0 12px;border-radius:999px;
  font-size:12px;color:var(--c-primary);
  background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.28);
}
.post-card h3{font-size:17px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-ex{font-size:14px;line-height:1.8;color:var(--tx-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:12px;color:var(--tx-3);font-variant-numeric:tabular-nums}
.post-meta .arrow{transition:transform var(--ease);color:var(--c-primary)}
.post-card:hover .post-meta .arrow{transform:translateX(4px)}
.empty-state{
  min-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  border:1px dashed rgba(255,255,255,.14);
  border-radius:var(--r-md);
  background:rgba(255,255,255,.02);
  color:var(--tx-3);
  font-size:14px;
}
.empty-state svg{width:40px;height:40px;color:var(--tx-3)}

/* ---------- 精选推荐（非对称） ---------- */
.feature-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px}
.feature-main{
  position:relative;overflow:hidden;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--bg-2);
  box-shadow:var(--sh-card);
  display:flex;flex-direction:column;
  transition:var(--ease);
  color:inherit;
  min-height:420px;
}
.feature-main:hover{transform:translateY(-6px);border-color:var(--line-lit);box-shadow:var(--sh-hover);color:inherit}
.feature-main .fm-img{position:relative;aspect-ratio:16/8;overflow:hidden}
.feature-main .fm-img img{width:100%;height:100%;object-fit:cover;transition:transform 320ms cubic-bezier(.2,.7,.3,1)}
.feature-main:hover .fm-img img{transform:scale(1.03)}
.feature-main .fm-img::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(16,27,51,.95),transparent 58%)}
.feature-main .fm-body{padding:24px 26px 26px}
.feature-main h3{font-size:22px;margin:12px 0 10px;line-height:1.4}
.feature-main p{font-size:14px;line-height:1.85;color:var(--tx-2)}
.feature-side{display:grid;grid-template-columns:1fr 1fr;grid-auto-rows:1fr;gap:16px}
.side-item{
  display:flex;flex-direction:column;justify-content:space-between;gap:14px;
  padding:18px;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--line);
  transition:var(--ease);
  color:inherit;
}
.side-item:hover{background:var(--glass-hover);border-color:var(--line-lit);transform:translateY(-4px);color:inherit}
.side-item h4{font-size:15px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.side-item time{font-size:12px;color:var(--tx-3);font-variant-numeric:tabular-nums}
.feature-more{margin-top:24px}

/* ---------- 专题分区 ---------- */
.topic-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.topic-tabs a{
  display:inline-flex;align-items:center;
  height:38px;padding:0 18px;border-radius:999px;
  font-size:14px;color:var(--tx-2);
  background:var(--glass);border:1px solid var(--line);
  transition:var(--ease);
}
.topic-tabs a:hover{color:#fff;border-color:var(--line-lit)}
.topic-tabs a.on{background:linear-gradient(135deg,rgba(34,211,238,.9),rgba(109,92,255,.9));color:#04121A;font-weight:600;border-color:transparent}
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.topic-card{
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--bg-2);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:var(--ease);
  color:inherit;
  display:block;
}
.topic-card:hover{transform:translateY(-6px);border-color:var(--line-lit);box-shadow:var(--sh-hover);color:inherit}
.topic-card .tc-img{aspect-ratio:16/9;overflow:hidden}
.topic-card .tc-img img{width:100%;height:100%;object-fit:cover;transition:transform 320ms cubic-bezier(.2,.7,.3,1)}
.topic-card:hover .tc-img img{transform:scale(1.04)}
.topic-card .tc-body{padding:20px}
.topic-card h3{font-size:17px;margin-bottom:8px}
.topic-card p{font-size:14px;line-height:1.8;color:var(--tx-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- 流程 ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow-item{
  position:relative;
  padding:24px 22px;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--line);
  transition:var(--ease);
}
.flow-item:hover{background:var(--glass-hover);border-color:var(--line-lit);transform:translateY(-4px)}
.flow-num{
  font-size:13px;font-weight:700;color:var(--c-warm);
  font-variant-numeric:tabular-nums;letter-spacing:1px;
}
.flow-item h3{font-size:17px;margin:10px 0 8px}
.flow-item p{font-size:14px;line-height:1.8;color:var(--tx-2)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  border-radius:var(--r-sm);
  background:var(--glass);
  border:1px solid var(--line);
  margin-bottom:12px;
  overflow:hidden;
  transition:var(--ease);
}
.faq-item:hover{border-color:rgba(34,211,238,.3)}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  background:transparent;border:none;
  color:var(--tx-1);font-size:17px;font-weight:600;text-align:left;
  cursor:pointer;transition:var(--ease);
}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{flex-shrink:0;width:20px;height:20px;position:relative;transition:transform var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);border-radius:2px;transform:translate(-50%,-50%)}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px;transition:opacity var(--ease)}
.faq-item.open .faq-icon::after{opacity:0}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 260ms cubic-bezier(.2,.7,.3,1);
}
.faq-a .inner{
  padding:16px 22px 20px;
  font-size:15px;line-height:1.85;color:var(--tx-2);
  border-top:1px solid var(--line);
}
.faq-item.open{border-color:rgba(34,211,238,.42);box-shadow:inset 3px 0 0 rgba(34,211,238,.75)}

/* ---------- CTA ---------- */
.cta-shell{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(140deg,rgba(34,211,238,.1),rgba(109,92,255,.12));
  padding:clamp(28px,5vw,56px);
  box-shadow:var(--sh-card);
}
.cta-shell::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:52px 52px;pointer-events:none;
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
.cta-inner h2{font-size:clamp(22px,2.8vw,30px);margin-bottom:12px}
.cta-inner p{font-size:15px;color:var(--tx-2);max-width:460px}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.cta-form input{
  flex:1 1 160px;min-width:0;height:48px;
  padding:0 16px;border-radius:12px;
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  color:var(--tx-1);font-size:15px;
  transition:var(--ease);
}
.cta-form input::placeholder{color:var(--tx-3)}
.cta-form input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(34,211,238,.22);background:rgba(255,255,255,.07)}
.cta-form button{flex:0 0 auto;height:48px;padding:0 26px;border-radius:12px;border:none;font-size:15px;font-weight:600;color:#04121A;background:linear-gradient(135deg,var(--c-primary),#4EC5E8);box-shadow:var(--sh-glow);cursor:pointer;transition:var(--ease)}
.cta-form button:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,211,238,.7),0 16px 38px rgba(34,211,238,.4)}
.form-note{font-size:12px;color:var(--tx-3);margin-top:12px;line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;z-index:1;background:var(--bg-1);border-top:1px solid var(--line);margin-top:clamp(40px,5vw,64px)}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;gap:32px;padding:clamp(40px,5vw,64px) 0 32px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--tx-2);max-width:320px}
.footer-contact{margin-top:16px;font-size:13px;color:var(--tx-3);line-height:1.9}
.footer-col h5{font-size:14px;font-weight:600;color:var(--tx-1);margin-bottom:14px;letter-spacing:.4px}
.footer-col ul li+li{margin-top:10px}
.footer-col ul a{font-size:14px;color:var(--tx-2);transition:var(--ease)}
.footer-col ul a:hover{color:var(--c-primary)}
.footer-note{
  display:flex;align-items:flex-start;gap:12px;
  padding:16px 20px;
  border-radius:var(--r-sm);
  background:var(--glass);
  border:1px solid var(--line);
  font-size:12.5px;line-height:1.8;color:var(--tx-3);
  margin-bottom:24px;
}
.footer-note svg{flex-shrink:0;width:18px;height:18px;color:var(--c-warm);margin-top:3px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--tx-3);
}
.footer-bottom .policy{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .policy a{color:var(--tx-3);font-size:13px}
.footer-bottom .policy a:hover{color:var(--c-primary)}

/* ---------- 响应式 ---------- */
@media(max-width:1199.98px){
  .post-grid{grid-template-columns:repeat(3,1fr)}
  .topic-grid{grid-template-columns:repeat(3,1fr)}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:1.4fr 1fr 1fr;row-gap:28px}
}
@media(max-width:991.98px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .nav-inner{height:60px}
  .hero-aside{display:none}
  .hero-shell{min-height:clamp(420px,64vh,560px)}
  .hero-content{max-width:100%}
  .cta-inner{grid-template-columns:1fr;gap:24px}
  .feature-grid{grid-template-columns:1fr}
  .feature-main{min-height:0}
}
@media(max-width:767.98px){
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .topic-grid{grid-template-columns:1fr}
  .flow-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr 1fr}
  .hero-stats{max-width:100%}
  .track-card{flex:0 0 210px}
  .feature-side{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
}
@media(max-width:575.98px){
  .post-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-primary-x,.hero-actions .btn-ghost-x{width:100%;justify-content:center}
  .cta-form input{flex:1 1 100%}
  .cta-form button{width:100%}
  .hero-stats b{font-size:17px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:1ms!important;scroll-behavior:auto!important}
  .track-card:hover,.post-card:hover,.topic-card:hover,.feature-main:hover,.side-item:hover,.flow-item:hover{transform:none}
}

/* roulang page: article */
:root{
  --bg-0:#060B18;
  --bg-1:#0B1426;
  --bg-2:#101B33;
  --glass:rgba(255,255,255,.055);
  --glass-hover:rgba(255,255,255,.085);
  --line:rgba(255,255,255,.08);
  --line-lit:rgba(34,211,238,.45);
  --c-primary:#22D3EE;
  --c-accent:#6D5CFF;
  --c-warm:#FFB84D;
  --tx-1:#E8EEF9;
  --tx-2:#A9B6CE;
  --tx-3:#6E7C99;
  --ok:#34D399;
  --warn:#F87171;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --shadow-hover:0 20px 48px rgba(0,0,0,.55);
  --glow-btn:0 0 0 1px rgba(34,211,238,.5), 0 10px 28px rgba(34,211,238,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:#060B18;
  --bs-body-color:#A9B6CE;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-primary-rgb:34,211,238;
  --bs-link-color:#22D3EE;
  --bs-link-hover-color:#6D5CFF;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--tx-2);
  background-color:var(--bg-0);
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:56px 56px;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--c-accent);text-decoration:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px;}
.container{max-width:1320px;padding-left:24px;padding-right:24px;margin:0 auto;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(6,11,24,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.75),rgba(109,92,255,.75),transparent);
  pointer-events:none;
}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;display:grid;place-items:center;border-radius:12px;
  background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.35);
  box-shadow:0 0 18px rgba(34,211,238,.22);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.brand:hover .brand-mark{box-shadow:0 0 24px rgba(34,211,238,.4);border-color:rgba(34,211,238,.6);}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.12;}
.brand-text strong{font-size:18px;color:var(--tx-1);letter-spacing:.4px;font-weight:700;}
.brand-text em{font-size:12.5px;font-style:normal;color:var(--tx-3);letter-spacing:1.8px;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 13px;border-radius:10px;
  font-size:14.5px;color:var(--tx-2);white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.nav-links a:hover{color:#fff;background:var(--glass);transform:translateY(1px);}
.nav-links a.active{color:var(--c-primary);}
.nav-links a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-primary);box-shadow:0 0 10px var(--c-primary),0 -6px 14px rgba(34,211,238,.45);
}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:42px;padding:0 20px;border-radius:var(--r-sm);
  font-size:14.5px;font-weight:600;color:#04121C;
  background:linear-gradient(135deg,var(--c-primary),#3ED9F0);
  box-shadow:var(--glow-btn);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
  white-space:nowrap;
}
.nav-cta:hover{color:#04121C;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,211,238,.7),0 14px 34px rgba(34,211,238,.42);filter:brightness(1.05);}
.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);color:var(--tx-1);
  align-items:center;justify-content:center;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--line-lit);background:var(--glass-hover);}
.nav-toggle svg{width:22px;height:22px;}
.mobile-drawer{
  position:fixed;inset:0;z-index:1100;
  background:rgba(6,11,24,.96);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  display:flex;flex-direction:column;
  padding:20px 20px 28px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
}
.mobile-drawer.open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-close{
  width:44px;height:44px;border-radius:12px;background:var(--glass);border:1px solid var(--line);
  color:var(--tx-1);display:grid;place-items:center;
}
.drawer-close svg{width:20px;height:20px;}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 4px;font-size:16px;color:var(--tx-1);
  border-bottom:1px solid var(--line);
}
.drawer-nav a::after{content:"›";color:var(--tx-3);font-size:20px;line-height:1;}
.drawer-nav a.active{color:var(--c-primary);}
.drawer-cta{
  margin-top:auto;display:flex;align-items:center;justify-content:center;
  min-height:52px;border-radius:var(--r-sm);font-weight:600;color:#04121C;
  background:linear-gradient(135deg,var(--c-primary),#3ED9F0);
  box-shadow:var(--glow-btn);
}

/* ============ 阅读进度条 ============ */
.read-progress{
  position:fixed;top:0;left:0;height:3px;width:0;z-index:2000;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
  box-shadow:0 0 12px rgba(34,211,238,.7);
  transition:width .08s linear;
}

/* ============ 面包屑 ============ */
.breadcrumb-bar{padding:22px 0 16px;border-bottom:1px solid var(--line);}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);margin:0;padding:0;list-style:none;}
.breadcrumb-list a{color:var(--tx-3);}
.breadcrumb-list a:hover{color:var(--c-primary);}
.breadcrumb-list .sep{color:rgba(255,255,255,.16);}
.breadcrumb-list .current{color:var(--tx-1);}

/* ============ 文章头部 ============ */
.article-hero{position:relative;padding:clamp(40px,5vw,64px) 0 clamp(32px,4vw,48px);overflow:hidden;}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center 30%;
  opacity:.16;filter:saturate(.9);
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(680px 320px at 8% 20%, rgba(34,211,238,.18), transparent 70%),
    linear-gradient(180deg, rgba(6,11,24,.5), var(--bg-0) 88%);
}
.article-hero .container{position:relative;z-index:2;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(255,184,77,.35);
  background:rgba(255,184,77,.08);
  font-size:12.5px;letter-spacing:.6px;color:var(--c-warm);
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--c-warm);box-shadow:0 0 10px var(--c-warm);display:inline-block;}
.article-title{
  font-size:clamp(30px,3.6vw,44px);
  line-height:1.25;letter-spacing:.2px;
  color:var(--tx-1);font-weight:700;
  margin:20px 0 18px;max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  font-size:13.5px;color:var(--tx-3);
  font-variant-numeric:tabular-nums;
}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta svg{width:15px;height:15px;stroke:var(--tx-3);}
.meta-divider{width:1px;height:14px;background:rgba(255,255,255,.14);}
.share-group{display:inline-flex;align-items:center;gap:8px;}
.share-btn{
  display:inline-flex;align-items:center;gap:6px;
  height:34px;padding:0 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  color:var(--tx-2);font-size:13px;cursor:pointer;
  transition:all .2s var(--ease);
}
.share-btn:hover{border-color:var(--line-lit);color:var(--c-primary);background:var(--glass-hover);}
.share-btn:active{transform:scale(.97);}
.share-btn svg{width:14px;height:14px;}

/* ============ 正文区 ============ */
.article-main{padding:clamp(32px,4vw,56px) 0 clamp(48px,6vw,80px);}
.article-body{
  max-width:760px;
  font-size:17px;line-height:1.9;color:var(--tx-2);
  overflow-wrap:break-word;word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 20px;font-size:17px;line-height:1.9;color:var(--tx-2);}
.article-body h2{
  position:relative;
  font-size:24px;line-height:1.4;font-weight:700;color:var(--tx-1);
  margin:40px 0 18px;padding-left:16px;letter-spacing:.2px;
  scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.34em;width:3px;height:1.05em;border-radius:2px;
  background:var(--c-primary);
  box-shadow:0 0 12px rgba(34,211,238,.75);
}
.article-body h3{
  font-size:19px;font-weight:600;color:var(--tx-1);
  margin:32px 0 14px;line-height:1.5;scroll-margin-top:96px;
}
.article-body h4{font-size:17px;font-weight:600;color:var(--tx-1);margin:24px 0 12px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:24px;}
.article-body li{margin-bottom:8px;line-height:1.8;}
.article-body li::marker{color:var(--c-primary);}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(34,211,238,.35);}
.article-body a:hover{color:var(--c-accent);border-bottom-color:rgba(109,92,255,.5);}
.article-body strong{color:var(--tx-1);font-weight:600;}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  background:var(--glass);
  border-left:3px solid var(--c-accent);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:15px;font-style:italic;line-height:1.85;color:var(--tx-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:22px 0 10px;max-width:100%;height:auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--tx-3);text-align:center;margin-top:8px;}
.article-body table{
  display:block;width:100%;max-width:100%;overflow-x:auto;
  border-collapse:collapse;margin:24px 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:12px;
}
.article-body thead{background:var(--glass);}
.article-body th{
  text-align:left;padding:12px 16px;color:var(--tx-1);font-weight:600;
  border-bottom:1px solid var(--line);white-space:nowrap;
}
.article-body td{padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.05);}
.article-body tr:last-child td{border-bottom:none;}
.article-body pre{
  background:#050A14;border:1px solid var(--line);border-radius:12px;
  padding:18px;overflow-x:auto;margin:22px 0;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:13.5px;line-height:1.7;color:#B9C8E2;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.9em;padding:2px 6px;border-radius:6px;
  background:rgba(34,211,238,.1);color:#8FE9F7;
}
.article-body pre code{background:none;padding:0;color:inherit;font-size:inherit;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0;}

/* 空态 */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;min-height:220px;padding:36px 20px;text-align:center;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
}
.empty-state svg{width:40px;height:40px;stroke:var(--tx-3);}
.empty-state p{margin:0;font-size:14px;color:var(--tx-3);}
.empty-state a{
  display:inline-flex;align-items:center;height:42px;padding:0 20px;border-radius:var(--r-sm);
  border:1px solid var(--line-lit);color:var(--c-primary);font-size:14px;font-weight:600;
  transition:all .2s var(--ease);
}
.empty-state a:hover{background:rgba(34,211,238,.1);color:var(--c-primary);}

/* ============ 右侧栏 ============ */
.side-col{position:sticky;top:96px;align-self:flex-start;}
.side-card{
  background:linear-gradient(180deg, var(--bg-2), var(--bg-1));
  border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--shadow-card);
  margin-bottom:20px;
}
.side-card:last-child{margin-bottom:0;}
.side-title{
  display:flex;align-items:center;gap:9px;
  font-size:15px;font-weight:600;color:var(--tx-1);margin:0 0 16px;
}
.side-title::before{
  content:"";width:7px;height:7px;border-radius:50%;
  background:var(--c-primary);box-shadow:0 0 10px var(--c-primary);
}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:320px;overflow-y:auto;}
.toc-link{
  display:block;padding:8px 12px;border-radius:8px;
  font-size:13.5px;line-height:1.5;color:var(--tx-2);
  border-left:2px solid transparent;
  transition:all .2s var(--ease);
}
.toc-link:hover{background:var(--glass);color:var(--tx-1);}
.toc-link.active{
  color:var(--c-primary);background:rgba(34,211,238,.08);
  border-left-color:var(--c-primary);
}
.toc-empty{font-size:13px;color:var(--tx-3);margin:0;}
.mini-post{display:block;padding:11px 0;border-bottom:1px solid var(--line);}
.mini-post:last-child{border-bottom:none;padding-bottom:0;}
.mini-post:first-of-type{padding-top:0;}
.mini-post strong{
  display:block;font-size:14px;font-weight:500;line-height:1.55;color:var(--tx-2);
  transition:color .2s var(--ease);
}
.mini-post:hover strong{color:var(--c-primary);}
.mini-post time{
  display:block;margin-top:5px;font-size:12px;color:var(--tx-3);
  font-variant-numeric:tabular-nums;
}
.side-cta{
  background:
    radial-gradient(320px 160px at 100% 0%, rgba(109,92,255,.22), transparent 70%),
    linear-gradient(180deg, var(--bg-2), var(--bg-1));
}
.side-cta p{font-size:13.5px;line-height:1.75;color:var(--tx-2);margin:0 0 16px;}
.btn-neon{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  width:100%;min-height:46px;padding:0 20px;border-radius:var(--r-sm);
  font-size:14.5px;font-weight:600;color:#04121C;
  background:linear-gradient(135deg,var(--c-primary),#46DDF2);
  box-shadow:var(--glow-btn);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.btn-neon:hover{color:#04121C;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,211,238,.7),0 14px 34px rgba(34,211,238,.42);filter:brightness(1.04);}
.btn-neon:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:14.5px;font-weight:600;color:var(--tx-1);
  background:var(--glass);border:1px solid var(--line);
  transition:all .2s var(--ease);
}
.btn-ghost:hover{color:var(--tx-1);border-color:var(--line-lit);background:var(--glass-hover);transform:translateY(-2px);}

/* ============ 上下篇 + 返回 ============ */
.post-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
  max-width:760px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line);
}
.post-nav-item{
  display:flex;flex-direction:column;gap:6px;
  padding:18px 20px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);
  transition:all .2s var(--ease);
}
.post-nav-item:hover{border-color:var(--line-lit);background:var(--glass-hover);transform:translateY(-3px);}
.post-nav-item span{font-size:12px;color:var(--tx-3);letter-spacing:.5px;}
.post-nav-item strong{font-size:14.5px;font-weight:500;color:var(--tx-1);line-height:1.5;}
.post-back{
  display:inline-flex;align-items:center;gap:8px;margin-top:22px;
  font-size:14px;color:var(--tx-2);
}
.post-back:hover{color:var(--c-primary);}

/* ============ 相关推荐 ============ */
.related-section{padding:clamp(48px,6vw,80px) 0;border-top:1px solid var(--line);background:linear-gradient(180deg, rgba(11,20,38,.6), transparent);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:700;
  color:var(--tx-1);margin:0;letter-spacing:.2px;
}
.section-head p{margin:8px 0 0;font-size:14px;color:var(--tx-3);}
.card-link{
  display:flex;flex-direction:column;height:100%;
  background:linear-gradient(180deg, var(--bg-2), var(--bg-1));
  border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card-link:hover{transform:translateY(-6px);border-color:var(--line-lit);box-shadow:var(--shadow-hover),0 0 0 1px var(--line-lit);}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.card-link:hover .card-cover img{transform:scale(1.03);}
.card-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(6,11,24,0) 45%, rgba(6,11,24,.82));
}
.cover-badge{
  position:absolute;left:14px;top:14px;z-index:2;
  padding:4px 11px;border-radius:999px;font-size:11.5px;letter-spacing:.4px;
  color:#BFF6FE;background:rgba(34,211,238,.16);
  border:1px solid rgba(34,211,238,.42);
  backdrop-filter:blur(6px);
}
.card-body-inner{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body-inner h3{
  font-size:17px;line-height:1.5;font-weight:600;color:var(--tx-1);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body-inner p{
  font-size:13.5px;line-height:1.75;color:var(--tx-2);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:auto;padding-top:10px;font-size:12.5px;color:var(--tx-3);
  font-variant-numeric:tabular-nums;
}
.card-foot .arrow{transition:transform .2s var(--ease);color:var(--c-primary);}
.card-link:hover .card-foot .arrow{transform:translateX(4px);}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;padding:clamp(48px,6vw,72px) 0 32px;
  background:linear-gradient(180deg, rgba(11,20,38,.5), rgba(6,11,24,.95));
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.5),rgba(109,92,255,.5),transparent);
}
.footer-top{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;
  gap:36px 28px;padding-bottom:36px;
}
.footer-brand p{font-size:13.5px;line-height:1.85;color:var(--tx-3);margin:16px 0 0;max-width:340px;}
.footer-contact{margin-top:16px;font-size:13px;line-height:1.9;color:var(--tx-3);}
.footer-col h5{font-size:14px;font-weight:600;color:var(--tx-1);margin:0 0 16px;letter-spacing:.3px;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--tx-2);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--c-primary);}
.footer-note{
  display:flex;gap:14px;align-items:flex-start;
  padding:18px 20px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);
  font-size:12.5px;line-height:1.8;color:var(--tx-3);
}
.footer-note svg{width:20px;height:20px;flex:0 0 auto;stroke:var(--c-warm);margin-top:2px;}
.footer-note strong{color:var(--tx-2);font-weight:600;display:block;margin-bottom:2px;font-size:13px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:24px;padding-top:22px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--tx-3);
}
.footer-policy{display:flex;flex-wrap:wrap;gap:18px;}
.footer-policy a{color:var(--tx-3);font-size:12.5px;}
.footer-policy a:hover{color:var(--c-primary);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .footer-top{grid-template-columns:1.4fr 1fr 1fr;gap:32px 24px;}
}
@media (max-width:991px){
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{height:64px;}
  .side-col{position:static;margin-top:40px;}
  .article-body{max-width:none;}
  .post-nav{max-width:none;}
  .footer-top{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px;}
  .article-hero{padding:32px 0 28px;}
  .article-body,.article-body p{font-size:15.5px;}
  .article-body h2{font-size:21px;margin-top:32px;}
  .article-body h3{font-size:18px;margin-top:26px;}
  .breadcrumb-list{font-size:12.5px;}
  .post-nav{grid-template-columns:1fr;}
}
@media (max-width:575px){
  .nav-inner{height:60px;}
  .brand-mark{width:34px;height:34px;border-radius:10px;}
  .brand-text strong{font-size:16px;}
  .brand-text em{font-size:11px;letter-spacing:1.2px;}
  .footer-top{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .section-head h2{font-size:22px;}
  .side-card{padding:18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  .card-link:hover,.btn-neon:hover,.btn-ghost:hover,.post-nav-item:hover,.nav-cta:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --bg-0:#060B18;
  --bg-1:#0B1426;
  --bg-2:#101B33;
  --glass:rgba(255,255,255,.055);
  --glass-hover:rgba(255,255,255,.085);
  --line:rgba(255,255,255,.08);
  --line-lit:rgba(34,211,238,.45);
  --c-primary:#22D3EE;
  --c-accent:#6D5CFF;
  --c-warm:#FFB84D;
  --tx-1:#E8EEF9;
  --tx-2:#A9B6CE;
  --tx-3:#6E7C99;
  --ok:#34D399;
  --warn:#F87171;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --sh-card:0 12px 32px rgba(0,0,0,.45);
  --sh-hover:0 20px 48px rgba(0,0,0,.55);
  --t:200ms cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--tx-2);
  --bs-border-color:var(--line);
  --bs-primary-rgb:34,211,238;
  --bs-link-color:var(--c-primary);
  --bs-link-hover-color:var(--c-accent);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.45;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--c-accent);}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:3px;
  border-radius:6px;
}
h1,h2,h3,h4,h5{
  color:var(--tx-1);
  margin:0;
  line-height:1.25;
  letter-spacing:.2px;
  font-weight:700;
}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.container{
  width:100%;
  max-width:1320px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
main{position:relative;z-index:1;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(6,11,24,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.7),rgba(109,92,255,.7),transparent);
  opacity:.7;
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:26px;
  height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  flex-shrink:0;
}
.brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(150deg,rgba(34,211,238,.18),rgba(109,92,255,.16));
  border:1px solid var(--line);
  box-shadow:inset 0 0 12px rgba(34,211,238,.12);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text strong{
  font-size:18px;
  color:var(--tx-1);
  letter-spacing:.4px;
  font-weight:700;
}
.brand-text em{
  font-style:normal;
  font-size:12px;
  color:var(--tx-3);
  letter-spacing:1.6px;
  margin-top:3px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:44px;
  padding:0 14px;
  font-size:15px;
  color:var(--tx-2);
  border-radius:10px;
  transition:color var(--t),background var(--t),transform var(--t);
}
.nav-links a:hover{
  color:var(--tx-1);
  background:rgba(255,255,255,.045);
}
.nav-links a.active{
  color:var(--c-primary);
  background:rgba(34,211,238,.08);
}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:6px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
  box-shadow:0 0 10px rgba(34,211,238,.9),0 -5px 16px rgba(34,211,238,.35);
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:42px;
  padding:0 20px;
  font-size:14.5px;
  font-weight:600;
  color:#04121a;
  border-radius:var(--r-sm);
  background:linear-gradient(135deg,#22D3EE,#59E6F6);
  box-shadow:0 0 0 1px rgba(34,211,238,.5),0 10px 28px rgba(34,211,238,.28);
  transition:transform var(--t),box-shadow var(--t),filter var(--t);
  white-space:nowrap;
}
.nav-cta:hover{
  color:#04121a;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(34,211,238,.72),0 14px 34px rgba(34,211,238,.4);
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  margin-left:auto;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:12px;
  color:var(--tx-1);
  cursor:pointer;
  transition:border-color var(--t),background var(--t);
}
.nav-toggle:hover{border-color:var(--line-lit);background:var(--glass-hover);}
.nav-toggle svg{width:22px;height:22px;}

/* 移动抽屉 */
.drawer{
  position:fixed;
  inset:0;
  z-index:1100;
  background:rgba(6,11,24,.96);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  display:flex;
  flex-direction:column;
  padding:20px 20px 32px;
  transform:translateX(100%);
  visibility:hidden;
  transition:transform 260ms cubic-bezier(.2,.7,.3,1),visibility 260ms;
}
.drawer.open{transform:translateX(0);visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{
  width:44px;height:44px;
  display:grid;place-items:center;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:12px;
  color:var(--tx-1);
  cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:52px;
  padding:0 4px;
  font-size:16px;
  color:var(--tx-2);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.drawer-nav a::after{
  content:"";
  width:7px;height:7px;
  border-right:1.6px solid var(--tx-3);
  border-top:1.6px solid var(--tx-3);
  transform:rotate(45deg);
}
.drawer-nav a.active{color:var(--c-primary);}
.drawer-nav a:hover{color:var(--tx-1);}
.drawer-cta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:center;
  height:50px;
  border-radius:var(--r-sm);
  font-weight:600;
  color:#04121a;
  background:linear-gradient(135deg,#22D3EE,#59E6F6);
  box-shadow:0 0 0 1px rgba(34,211,238,.5),0 12px 30px rgba(34,211,238,.3);
}

/* ---------- 通用按钮 ---------- */
.btn-glow,.btn-glass,.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:12px 24px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t),background var(--t),color var(--t);
  cursor:pointer;
}
.btn-glow{
  color:#04121a;
  background:linear-gradient(135deg,#22D3EE,#59E6F6);
  box-shadow:0 0 0 1px rgba(34,211,238,.5),0 10px 28px rgba(34,211,238,.28);
}
.btn-glow:hover{
  color:#04121a;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(34,211,238,.75),0 16px 36px rgba(34,211,238,.4);
}
.btn-glass{
  color:var(--tx-1);
  background:var(--glass);
  border-color:var(--line);
}
.btn-glass:hover{
  color:var(--tx-1);
  transform:translateY(-2px);
  border-color:var(--line-lit);
  background:var(--glass-hover);
}
.btn-ghost{
  color:var(--tx-1);
  background:transparent;
  border-color:rgba(255,255,255,.18);
}
.btn-ghost:hover{color:var(--c-primary);border-color:var(--line-lit);}

/* ---------- 分类头部 ---------- */
.cat-hero{padding:28px 0 0;position:relative;z-index:1;}
.hero-card{
  position:relative;
  min-height:320px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:16px;
  padding:clamp(26px,4vw,52px);
  background:
    linear-gradient(90deg,rgba(6,11,24,.95) 0%,rgba(6,11,24,.82) 46%,rgba(6,11,24,.42) 100%),
    radial-gradient(90% 120% at 4% 18%,rgba(34,211,238,.18),transparent 58%),
    url(/assets/images/backpic/back-1.webp) right center/cover no-repeat;
  box-shadow:var(--sh-card);
}
.hero-card::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:58%;
  background:linear-gradient(180deg,transparent,rgba(6,11,24,.86));
  pointer-events:none;
}
.hero-badge{
  position:relative;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:9px;
  align-self:flex-start;
  padding:6px 15px;
  font-size:12.5px;
  letter-spacing:1px;
  color:var(--tx-1);
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line);
}
.hero-badge .dot{
  width:7px;height:7px;
  border-radius:50%;
  background:var(--c-warm);
  box-shadow:0 0 10px rgba(255,184,77,.9);
}
.hero-card h1{
  position:relative;
  z-index:2;
  font-size:clamp(26px,3.4vw,42px);
  max-width:18em;
  line-height:1.3;
}
.hero-sub{
  position:relative;
  z-index:2;
  font-size:clamp(15px,1.3vw,17px);
  color:var(--tx-2);
  max-width:34em;
  margin:0;
}
.hero-actions{
  position:relative;
  z-index:2;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:6px;
}

/* ---------- 面包屑 ---------- */
.crumb-bar{
  padding:16px 0 14px;
  font-size:13px;
  color:var(--tx-3);
  border-bottom:1px solid rgba(255,255,255,.06);
  margin-bottom:clamp(28px,4vw,44px);
}
.crumb-bar a{color:var(--tx-3);}
.crumb-bar a:hover{color:var(--c-primary);}
.crumb-bar .sep{margin:0 8px;opacity:.55;}
.crumb-bar .current{color:var(--tx-1);}

/* ---------- 板块 ---------- */
.section{padding:clamp(46px,5vw,76px) 0;position:relative;z-index:1;}
.section-head{margin-bottom:28px;max-width:760px;}
.section-head h2{font-size:clamp(22px,2.4vw,30px);}
.section-head p{margin-top:10px;font-size:14.5px;color:var(--tx-3);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:2px;
  color:var(--c-primary);
  margin-bottom:10px;
}
.eyebrow::before{
  content:"";
  width:18px;height:1px;
  background:linear-gradient(90deg,var(--c-primary),transparent);
}

/* ---------- 卡片网格 ---------- */
.entry-grid{
  display:grid;
  gap:20px;
  grid-template-columns:repeat(2,minmax(0,1fr));
}
.entry-card{
  display:flex;
  flex-direction:column;
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018)),var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.entry-card:hover{
  transform:translateY(-6px);
  border-color:var(--line-lit);
  box-shadow:var(--sh-hover),0 0 0 1px var(--line-lit);
}
.entry-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-2);
}
.entry-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 320ms cubic-bezier(.2,.7,.3,1);
}
.entry-card:hover .entry-thumb img{transform:scale(1.03);}
.entry-thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(6,11,24,.66));
}
.entry-body{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:20px;
  flex:1;
}
.chip{
  display:inline-flex;
  align-items:center;
  align-self:flex-start;
  padding:3px 11px;
  font-size:12px;
  letter-spacing:.5px;
  color:var(--c-primary);
  background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.26);
  border-radius:999px;
}
.entry-body h3{
  font-size:18px;
  line-height:1.45;
  color:var(--tx-1);
  transition:color var(--t);
}
.entry-card:hover h3{color:var(--c-primary);}
.entry-body p{
  font-size:14px;
  line-height:1.75;
  color:var(--tx-2);
  margin:0;
}
.entry-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid rgba(255,255,255,.07);
  font-size:13px;
  color:var(--tx-3);
  font-variant-numeric:tabular-nums;
}
.entry-foot .arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--c-primary);
  font-weight:600;
  transition:transform var(--t);
}
.entry-card:hover .entry-foot .arrow{transform:translateX(4px);}

/* ---------- 侧栏 ---------- */
.side-col{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.side-card{
  padding:20px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.015)),var(--bg-2);
  box-shadow:var(--sh-card);
}
.side-card h3{
  font-size:15px;
  letter-spacing:.5px;
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:8px;
}
.side-card h3::before{
  content:"";
  width:3px;height:15px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-accent));
  box-shadow:0 0 10px rgba(34,211,238,.7);
}
.filter-chips{display:flex;flex-wrap:wrap;gap:8px;}
.filter-chips .fchip{
  padding:6px 14px;
  font-size:13px;
  color:var(--tx-2);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:999px;
  cursor:pointer;
  transition:all var(--t);
}
.filter-chips .fchip:hover{color:var(--tx-1);border-color:var(--line-lit);}
.filter-chips .fchip.is-active{
  color:#04121a;
  font-weight:600;
  background:linear-gradient(135deg,var(--c-primary),var(--c-accent));
  border-color:transparent;
  box-shadow:0 8px 22px rgba(34,211,238,.28);
}
.side-note{
  font-size:13.5px;
  line-height:1.8;
  color:var(--tx-2);
}
.side-note strong{color:var(--tx-1);font-weight:600;}
.side-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:14px;
  font-size:13.5px;
  font-weight:600;
  transition:gap var(--t);
}
.side-link:hover{gap:10px;}
.side-list{display:flex;flex-direction:column;gap:14px;}
.side-list li{
  display:flex;
  gap:10px;
  font-size:13.5px;
  line-height:1.7;
  color:var(--tx-2);
}
.side-list .idx{
  flex-shrink:0;
  width:22px;height:22px;
  display:grid;place-items:center;
  font-size:12px;
  font-weight:600;
  color:var(--c-warm);
  border-radius:7px;
  background:rgba(255,184,77,.1);
  border:1px solid rgba(255,184,77,.28);
  font-variant-numeric:tabular-nums;
}

/* ---------- 流程步骤 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
}
.step{
  position:relative;
  padding:24px 20px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012)),var(--bg-1);
  transition:border-color var(--t),transform var(--t),background var(--t);
}
.step:hover{
  transform:translateY(-4px);
  border-color:var(--line-lit);
  background:linear-gradient(180deg,rgba(34,211,238,.09),rgba(255,255,255,.015)),var(--bg-1);
}
.step .num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:30px;height:30px;
  margin-bottom:14px;
  font-size:13px;
  font-weight:700;
  color:#04121a;
  border-radius:9px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-accent));
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:13.5px;line-height:1.75;color:var(--tx-2);margin:0;}

/* ---------- 数据条 ---------- */
.stat-band{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012)),var(--bg-1);
  overflow:hidden;
}
.stat-band .stat{
  padding:24px 22px;
  border-right:1px solid rgba(255,255,255,.07);
}
.stat-band .stat:last-child{border-right:none;}
.stat b{
  display:block;
  font-size:clamp(24px,2.6vw,32px);
  color:var(--tx-1);
  font-variant-numeric:tabular-nums;
  letter-spacing:.5px;
  line-height:1.2;
}
.stat span{
  display:block;
  margin-top:6px;
  font-size:13.5px;
  color:var(--tx-3);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.014)),var(--bg-1);
  overflow:hidden;
  transition:border-color var(--t),background var(--t);
}
.faq-item:hover{border-color:rgba(34,211,238,.3);}
.faq-item[open]{
  border-color:rgba(34,211,238,.42);
  box-shadow:inset 2px 0 0 rgba(34,211,238,.85),0 10px 30px rgba(0,0,0,.35);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  font-size:17px;
  font-weight:600;
  color:var(--tx-1);
  cursor:pointer;
  list-style:none;
  min-height:56px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-ico{
  flex-shrink:0;
  width:20px;height:20px;
  color:var(--c-primary);
  transition:transform var(--t),color var(--t);
}
.faq-item[open] .faq-ico{transform:rotate(45deg);color:var(--c-accent);}
.faq-body{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--tx-2);
  border-top:1px solid rgba(255,255,255,.07);
  padding-top:16px;
}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  overflow:hidden;
  padding:clamp(26px,4vw,48px);
  background:
    radial-gradient(70% 120% at 88% 12%,rgba(109,92,255,.22),transparent 60%),
    radial-gradient(60% 100% at 6% 90%,rgba(34,211,238,.16),transparent 62%),
    linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012)),var(--bg-1);
  box-shadow:var(--sh-card);
}
.cta-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:32px;
  align-items:center;
}
.cta-grid h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.cta-grid p{font-size:14.5px;color:var(--tx-2);}
.cta-form{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.cta-form .field{flex:1 1 160px;min-width:0;}
.form-control-dark{
  width:100%;
  height:48px;
  padding:0 16px;
  font-size:15px;
  color:var(--tx-1);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.form-control-dark::placeholder{color:var(--tx-3);}
.form-control-dark:focus{
  outline:none;
  border-color:var(--c-primary);
  background:rgba(255,255,255,.06);
  box-shadow:0 0 0 3px rgba(34,211,238,.22);
}
.cta-form .btn-glow{flex:0 0 auto;}
.form-hint{
  width:100%;
  font-size:12px;
  line-height:1.7;
  color:var(--tx-3);
  margin-top:2px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:clamp(40px,5vw,72px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,20,38,.9),rgba(6,11,24,1));
  padding-top:clamp(40px,5vw,64px);
}
.footer-top{
  display:grid;
  grid-template-columns:1.6fr repeat(4,1fr);
  gap:32px;
  padding-bottom:36px;
}
.footer-brand p{
  margin:18px 0 14px;
  font-size:13.5px;
  line-height:1.85;
  color:var(--tx-2);
  max-width:34em;
}
.footer-contact{
  font-size:13px;
  line-height:1.9;
  color:var(--tx-3);
}
.footer-col h5{
  font-size:14px;
  font-weight:600;
  color:var(--tx-1);
  margin-bottom:14px;
  letter-spacing:.5px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{
  font-size:14px;
  color:var(--tx-2);
  transition:color var(--t),padding-left var(--t);
}
.footer-col a:hover{color:var(--c-primary);padding-left:3px;}
.footer-note{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:18px 20px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  font-size:12.5px;
  line-height:1.8;
  color:var(--tx-3);
}
.footer-note svg{flex-shrink:0;width:18px;height:18px;margin-top:3px;color:var(--c-warm);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:22px;
  padding:22px 0 30px;
  border-top:1px solid rgba(255,255,255,.07);
  font-size:13px;
  color:var(--tx-3);
}
.footer-bottom .policy{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom a{color:var(--tx-3);}
.footer-bottom a:hover{color:var(--c-primary);}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  .entry-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
}
@media (max-width:1199.98px){
  .footer-top{grid-template-columns:1fr 1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{height:60px;}
  .side-col{position:static;}
  .cta-grid{grid-template-columns:1fr;gap:22px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .hero-card{min-height:290px;}
}
@media (max-width:767.98px){
  .container{padding-left:16px;padding-right:16px;}
  .stat-band{grid-template-columns:1fr;}
  .stat-band .stat{border-right:none;border-bottom:1px solid rgba(255,255,255,.07);}
  .stat-band .stat:last-child{border-bottom:none;}
  .footer-top{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  .entry-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .hero-actions .btn-glow,.hero-actions .btn-glass{width:100%;}
  .cta-form .btn-glow{width:100%;}
  .footer-top{grid-template-columns:1fr;}
  .brand-text strong{font-size:16px;}
  .brand-text em{font-size:11px;letter-spacing:1.2px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:1ms !important;animation-duration:1ms !important;}
  .entry-card:hover,.step:hover,.btn-glow:hover,.btn-glass:hover,.nav-cta:hover{transform:none;}
}

/* roulang page: category2 */
/* ===== 设计令牌 ===== */
:root{
  --bg-0:#060B18;
  --bg-1:#0B1426;
  --bg-2:#101B33;
  --glass:rgba(255,255,255,.055);
  --glass-hover:rgba(255,255,255,.085);
  --line:rgba(255,255,255,.08);
  --line-lit:rgba(34,211,238,.45);
  --c-primary:#22D3EE;
  --c-accent:#6D5CFF;
  --c-warm:#FFB84D;
  --tx-1:#E8EEF9;
  --tx-2:#A9B6CE;
  --tx-3:#6E7C99;
  --ok:#34D399;
  --warn:#F87171;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --shadow-hover:0 20px 48px rgba(0,0,0,.55);
  --ease:200ms cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:#060B18;
  --bs-body-color:#A9B6CE;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-primary-rgb:34,211,238;
  --bs-link-color:#22D3EE;
  --bs-link-hover-color:#6D5CFF;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:72px 72px;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease),transform var(--ease)}
a:hover{color:var(--c-accent);text-decoration:none}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px}
h1,h2,h3,h4,h5{color:var(--tx-1);line-height:1.25;letter-spacing:.2px;margin:0;font-weight:700}
p{margin:0 0 16px}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(34,211,238,.28);color:#fff}

/* ===== 容器 ===== */
.container{max-width:1320px;width:100%;padding-left:24px;padding-right:24px;margin:0 auto}
.section{padding:clamp(56px,7vw,96px) 0;position:relative;z-index:1}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,2.4vw,32px)}
.section-head p{margin:8px 0 0;color:var(--tx-3);font-size:14px;max-width:620px}
.section-link{font-size:14px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}
.section-link svg{width:16px;height:16px;transition:transform var(--ease)}
.section-link:hover svg{transform:translateX(4px)}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(6,11,24,.72);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.75),rgba(109,92,255,.7),transparent);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--line);
  box-shadow:inset 0 0 18px rgba(34,211,238,.16);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:18px;color:var(--tx-1);letter-spacing:.4px;font-weight:700}
.brand-text em{font-style:normal;font-size:13px;color:var(--tx-3);letter-spacing:1px}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links > a{
  position:relative;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--tx-2);font-weight:500;white-space:nowrap;
}
.nav-links > a:hover{color:#fff;background:rgba(255,255,255,.045);transform:translateY(1px)}
.nav-links > a.active{color:var(--c-primary)}
.nav-links > a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
  box-shadow:0 0 12px rgba(34,211,238,.7);
}
.nav-cta{
  margin-left:14px;height:42px;padding:0 20px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:#04121A;
  background:linear-gradient(135deg,#22D3EE,#4CD7F0);
  box-shadow:0 0 0 1px rgba(34,211,238,.5),0 10px 28px rgba(34,211,238,.28);
  transition:transform var(--ease),box-shadow var(--ease);
  white-space:nowrap;
}
.nav-cta:hover{transform:translateY(-2px);color:#04121A;box-shadow:0 0 0 1px rgba(34,211,238,.75),0 14px 34px rgba(34,211,238,.42)}
.nav-cta:active{transform:translateY(0)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--glass);color:var(--tx-1);place-items:center;margin-left:auto;
}
.nav-toggle svg{width:22px;height:22px}
.mobile-cta{display:none}

/* ===== 分类页矮版 Hero ===== */
.cat-hero{
  position:relative;z-index:1;
  min-height:320px;display:flex;align-items:flex-end;
  border-bottom-left-radius:var(--r-lg);border-bottom-right-radius:var(--r-lg);
  overflow:hidden;isolation:isolate;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:right 20%;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(680px 320px at 88% 40%,rgba(109,92,255,.22),transparent 70%),
    linear-gradient(270deg,rgba(6,11,24,.96) 8%,rgba(6,11,24,.78) 46%,rgba(6,11,24,.42) 100%),
    linear-gradient(to top,var(--bg-0) 4%,rgba(6,11,24,.15) 62%,transparent 100%);
}
.cat-hero-inner{padding:44px 0 40px;max-width:760px}
.badge-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:12px;letter-spacing:.6px;
  color:var(--tx-1);background:var(--glass);border:1px solid var(--line);
}
.badge-pill i{width:6px;height:6px;border-radius:50%;background:var(--c-warm);box-shadow:0 0 10px var(--c-warm);display:inline-block}
.cat-hero h1{
  font-size:clamp(26px,3.4vw,44px);margin:18px 0 14px;line-height:1.22;
}
.cat-hero h1 span{
  background:linear-gradient(120deg,#22D3EE,#6D5CFF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.cat-hero .hero-sub{font-size:15px;color:var(--tx-2);max-width:560px;margin:0}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-meta span{
  font-size:13px;color:var(--tx-2);padding:6px 12px;border-radius:999px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
}

/* ===== 面包屑 ===== */
.crumb-bar{padding:16px 0 0;position:relative;z-index:1}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--tx-3);padding-bottom:16px;border-bottom:1px solid var(--line);
}
.crumb a{color:var(--tx-3)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:rgba(255,255,255,.16)}
.crumb .current{color:var(--tx-1)}

/* ===== 概览条 ===== */
.overview{
  display:grid;grid-template-columns:1.5fr 1fr;gap:24px;align-items:stretch;
}
.overview-text{
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
  border:1px solid var(--line);border-radius:var(--r-md);padding:28px;
  box-shadow:var(--shadow-card);
}
.overview-text h2{font-size:22px;margin-bottom:12px}
.overview-text p{color:var(--tx-2);font-size:15px;line-height:1.9;margin:0}
.overview-text p + p{margin-top:12px}
.stat-panel{
  display:grid;grid-template-columns:1fr;gap:12px;
}
.stat-item{
  border:1px solid var(--line);border-radius:var(--r-md);padding:18px 20px;
  background:var(--glass);display:flex;align-items:center;justify-content:space-between;gap:12px;
  transition:border-color var(--ease),background var(--ease),transform var(--ease);
}
.stat-item:hover{border-color:var(--line-lit);background:var(--glass-hover);transform:translateY(-3px)}
.stat-item b{font-size:26px;color:var(--tx-1);font-weight:700;line-height:1.1}
.stat-item b em{font-style:normal;font-size:13px;color:var(--c-warm);margin-left:4px;font-weight:600}
.stat-item span{font-size:13px;color:var(--tx-3);text-align:right}

/* ===== 竖排图文列表流 ===== */
.brief-list{border-top:1px solid var(--line);margin-top:8px}
.brief-item{
  display:grid;grid-template-columns:240px 1fr;gap:28px;
  padding:28px 0;border-bottom:1px solid var(--line);
  align-items:center;transition:background var(--ease);
}
.brief-item:hover{background:linear-gradient(90deg,rgba(34,211,238,.045),transparent 72%)}
.brief-thumb{
  border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/10;background:var(--bg-2);position:relative;
}
.brief-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.3,1)}
.brief-item:hover .brief-thumb img{transform:scale(1.04)}
.brief-body{min-width:0}
.brief-body h3{font-size:20px;margin-bottom:10px;line-height:1.4}
.brief-body h3 a{color:var(--tx-1)}
.brief-body h3 a:hover{color:var(--c-primary)}
.brief-body p{font-size:14.5px;color:var(--tx-2);line-height:1.85;margin:0 0 14px}
.brief-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--tx-3)}
.tag-pill{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
  font-size:12px;color:var(--c-primary);background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.28);
}
.tag-pill.violet{color:#B9B1FF;background:rgba(109,92,255,.12);border-color:rgba(109,92,255,.3)}
.tag-pill.warm{color:var(--c-warm);background:rgba(255,184,77,.1);border-color:rgba(255,184,77,.3)}
.brief-meta .go{
  margin-left:auto;font-weight:600;color:var(--tx-2);display:inline-flex;align-items:center;gap:6px;
}
.brief-meta .go svg{width:15px;height:15px;transition:transform var(--ease)}
.brief-item:hover .brief-meta .go{color:var(--c-primary)}
.brief-item:hover .brief-meta .go svg{transform:translateX(4px)}

/* ===== 三步自查 ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step-card{
  position:relative;padding:24px;border-radius:var(--r-md);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.015));
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.step-card:hover{transform:translateY(-6px);border-color:var(--line-lit);box-shadow:var(--shadow-hover)}
.step-num{
  font-size:13px;font-weight:700;color:var(--c-warm);letter-spacing:1.5px;
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
}
.step-num::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--c-warm),transparent)}
.step-card h3{font-size:18px;margin-bottom:10px}
.step-card p{font-size:14px;color:var(--tx-2);margin:0;line-height:1.85}

/* ===== FAQ ===== */
.faq-wrap{max-width:860px;margin:0 auto}
.accordion-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-sm);
  margin-bottom:12px;overflow:hidden;
}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  background:transparent;color:var(--tx-1);font-size:17px;font-weight:600;
  padding:18px 20px;box-shadow:none;border:0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
}
.accordion-button:not(.collapsed){color:var(--c-primary);background:rgba(34,211,238,.05)}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--c-primary);outline-offset:-2px}
.accordion-button::after{
  content:"+";background-image:none;width:24px;height:24px;flex:0 0 24px;
  display:grid;place-items:center;font-size:20px;line-height:1;color:var(--c-primary);
  transition:transform var(--ease);transform:none;
}
.accordion-button:not(.collapsed)::after{content:"−";transform:none}
.accordion-body{
  padding:0 20px 20px;font-size:15px;color:var(--tx-2);line-height:1.85;
  border-top:1px solid var(--line);margin-top:0;padding-top:16px;
}
.accordion-collapse{position:relative}
.accordion-collapse.show::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:var(--c-primary);box-shadow:0 0 12px rgba(34,211,238,.8);
}

/* ===== CTA ===== */
.cta-band{
  border-radius:var(--r-lg);border:1px solid var(--line);
  background:
    radial-gradient(600px 240px at 12% 0%,rgba(34,211,238,.16),transparent 68%),
    radial-gradient(520px 260px at 92% 100%,rgba(109,92,255,.18),transparent 70%),
    linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  padding:clamp(28px,4vw,52px);
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.cta-band p{color:var(--tx-2);font-size:15px;max-width:640px;margin-bottom:24px}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.cta-form .form-control{
  flex:1 1 200px;min-width:0;height:48px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--tx-1);font-size:15px;padding:0 16px;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.cta-form .form-control::placeholder{color:var(--tx-3)}
.cta-form .form-control:focus{
  background:rgba(255,255,255,.06);border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(34,211,238,.2);color:var(--tx-1);
}
.btn-glow{
  height:48px;padding:0 26px;border-radius:var(--r-sm);border:0;
  font-size:15px;font-weight:700;color:#04121A;
  background:linear-gradient(135deg,#22D3EE,#4CD7F0);
  box-shadow:0 0 0 1px rgba(34,211,238,.5),0 10px 28px rgba(34,211,238,.28);
  transition:transform var(--ease),box-shadow var(--ease);
  white-space:nowrap;flex:0 0 auto;
}
.btn-glow:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,211,238,.8),0 16px 36px rgba(34,211,238,.42)}
.btn-glow:active{transform:translateY(0)}
.btn-ghost{
  height:44px;padding:0 22px;border-radius:var(--r-sm);
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--tx-1);
  background:var(--glass);border:1px solid var(--line);
  transition:border-color var(--ease),transform var(--ease),background var(--ease);
}
.btn-ghost:hover{color:#fff;border-color:var(--line-lit);background:var(--glass-hover);transform:translateY(-2px)}
.form-tip{font-size:12px;color:var(--tx-3);margin:12px 0 0}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:clamp(56px,7vw,96px);position:relative;z-index:1;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,20,38,.9),rgba(6,11,24,.98));
  padding:56px 0 28px;
}
.footer-top{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:32px}
.footer-brand p{font-size:14px;color:var(--tx-3);line-height:1.85;margin:16px 0 12px;max-width:340px}
.footer-contact{font-size:13px;color:var(--tx-3);line-height:1.9}
.footer-col h5{font-size:14px;font-weight:600;color:var(--tx-1);margin-bottom:14px;letter-spacing:.3px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:var(--tx-2)}
.footer-col ul li a:hover{color:var(--c-primary)}
.footer-note{
  margin-top:36px;padding:16px 20px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.03);border:1px solid var(--line);
  font-size:12.5px;line-height:1.85;color:var(--tx-3);
  display:flex;gap:12px;align-items:flex-start;
}
.footer-note svg{width:18px;height:18px;flex:0 0 18px;color:var(--c-warm);margin-top:2px}
.footer-bottom{
  margin-top:24px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--tx-3);
}
.footer-bottom .policy{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .policy a{color:var(--tx-3)}
.footer-bottom .policy a:hover{color:var(--c-primary)}

/* ===== 响应式 ===== */
@media (max-width:1199.98px){
  .footer-top{grid-template-columns:1.4fr repeat(2,1fr);gap:28px}
}
@media (max-width:991.98px){
  .nav-links{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    padding:18px 20px 28px;margin:0;
    background:rgba(6,11,24,.96);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    border-top:1px solid var(--line);
    transform:translateY(-10px);opacity:0;visibility:hidden;
    transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
    overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none}
  .nav-links > a{
    height:52px;display:flex;align-items:center;justify-content:space-between;
    font-size:16px;padding:0 6px;border-bottom:1px solid var(--line);border-radius:0;
  }
  .nav-links > a::before{
    content:"";order:2;width:8px;height:8px;border-right:1.5px solid var(--tx-3);
    border-top:1.5px solid var(--tx-3);transform:rotate(45deg);
  }
  .nav-links > a.active::after{display:none}
  .nav-links > a.active{color:var(--c-primary);background:transparent}
  .nav-links > a:hover{transform:none;background:transparent;color:#fff}
  .mobile-cta{
    display:flex;align-items:center;justify-content:center;
    margin-top:22px;order:99;height:48px;border-radius:12px;
    font-size:15px;font-weight:700;color:#04121A;
    background:linear-gradient(135deg,#22D3EE,#4CD7F0);
    box-shadow:0 0 0 1px rgba(34,211,238,.5),0 10px 28px rgba(34,211,238,.28);
  }
  .mobile-cta::before{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:grid}
  .nav-inner{height:60px}
  .overview{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .brief-item{grid-template-columns:200px 1fr;gap:20px}
  .cat-hero{min-height:280px}
}
@media (max-width:767.98px){
  .container{padding-left:16px;padding-right:16px}
  .brief-item{grid-template-columns:1fr;gap:16px;padding:22px 0}
  .brief-thumb{aspect-ratio:16/9;max-width:100%}
  .brief-meta .go{margin-left:0;width:100%;justify-content:flex-start}
  .footer-top{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
  .cta-form .form-control{flex:1 1 100%}
  .btn-glow{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:575.98px){
  .cat-hero-inner{padding:32px 0 30px}
  .hero-meta span{font-size:12px;padding:5px 10px}
  .brief-body h3{font-size:18px}
  .overview-text{padding:20px}
  .stat-item b{font-size:22px}
  .footer-top{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .brief-item:hover{transform:none}
  .step-card:hover{transform:none}
  .btn-glow:hover{transform:none}
  .nav-cta:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --bg-0:#060B18;
  --bg-1:#0B1426;
  --bg-2:#101B33;
  --glass:rgba(255,255,255,.055);
  --glass-hover:rgba(255,255,255,.085);
  --line:rgba(255,255,255,.08);
  --line-lit:rgba(34,211,238,.45);
  --c-primary:#22D3EE;
  --c-accent:#6D5CFF;
  --c-warm:#FFB84D;
  --tx-1:#E8EEF9;
  --tx-2:#A9B6CE;
  --tx-3:#6E7C99;
  --ok:#34D399;
  --warn:#F87171;
  --radius-lg:24px;
  --radius:16px;
  --radius-sm:12px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --shadow-hover:0 20px 48px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:#060B18;
  --bs-body-color:#E8EEF9;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-primary-rgb:34,211,238;
  --bs-link-color:#22D3EE;
  --bs-link-hover-color:#6D5CFF;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--tx-2);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index: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:46px 46px;
  mask-image:radial-gradient(circle at 50% 0%,#000 0%,rgba(0,0,0,.35) 70%,transparent 100%);
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 0%,rgba(0,0,0,.35) 70%,transparent 100%);
  opacity:.6;
}
h1,h2,h3,h4,h5{color:var(--tx-1);line-height:1.25;letter-spacing:.2px;margin:0;font-weight:700;}
p{margin:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--c-accent);}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:3px;
  border-radius:6px;
}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.container{max-width:1320px;padding-left:24px;padding-right:24px;margin:0 auto;width:100%;}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px;}
  body{font-size:15.5px;}
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(6,11,24,.78);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.75),rgba(109,92,255,.75),transparent);
  opacity:.8;
  pointer-events:none;
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:22px;
  min-height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  flex-shrink:0;
  color:var(--tx-1);
}
.brand:hover{color:var(--tx-1);}
.brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(145deg,rgba(34,211,238,.18),rgba(109,92,255,.18));
  border:1px solid rgba(34,211,238,.35);
  box-shadow:0 0 18px rgba(34,211,238,.18);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:18px;font-weight:700;letter-spacing:.4px;color:var(--tx-1);}
.brand-text em{font-style:normal;font-size:12.5px;color:var(--c-primary);letter-spacing:1px;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  font-size:15px;
  color:var(--tx-2);
  border-radius:10px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:6px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
  opacity:0;
  transform:translateY(2px);
  transition:opacity .2s var(--ease),transform .2s var(--ease);
  box-shadow:0 0 10px rgba(34,211,238,.7);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.04);}
.nav-links a:hover::after{opacity:.55;transform:translateY(0);}
.nav-links a.active{
  color:var(--c-primary);
  background:rgba(34,211,238,.08);
}
.nav-links a.active::after{opacity:1;transform:translateY(0);}
.nav-cta{
  flex-shrink:0;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:42px;
  padding:0 20px;
  border-radius:var(--radius-sm);
  font-size:14.5px;
  font-weight:600;
  color:#04121A;
  background:linear-gradient(135deg,var(--c-primary),#4FE4F5);
  box-shadow:0 0 0 1px rgba(34,211,238,.5),0 10px 28px rgba(34,211,238,.28);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.nav-cta:hover{
  color:#04121A;
  transform:translateY(-2px);
  filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(34,211,238,.7),0 14px 34px rgba(34,211,238,.4);
}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:11px;
  color:var(--tx-1);
  cursor:pointer;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--line-lit);background:var(--glass-hover);}
.nav-toggle svg{width:22px;height:22px;}

@media (max-width:991.98px){
  .nav-inner{min-height:60px;gap:12px;}
  .brand-mark{width:34px;height:34px;border-radius:10px;}
  .brand-text strong{font-size:16px;}
  .brand-text em{font-size:11.5px;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .nav-links{
    position:fixed;
    top:60px;left:0;right:0;bottom:0;
    margin-left:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:14px 20px 40px;
    background:rgba(6,11,24,.97);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    overflow-y:auto;
    border-top:1px solid var(--line);
  }
  .nav-links.is-open{display:flex;}
  .nav-links a{
    min-height:52px;
    padding:0 6px;
    font-size:16.5px;
    border-bottom:1px solid var(--line);
    border-radius:0;
    justify-content:space-between;
  }
  .nav-links a::after{display:none;}
  .nav-links a::before{
    content:"›";
    order:2;
    color:var(--tx-3);
    font-size:20px;
    line-height:1;
  }
  .nav-links a:hover,.nav-links a.active{background:transparent;}
  .nav-links a.active{color:var(--c-primary);}
}

/* ============ 面包屑 ============ */
.breadcrumb-bar{
  padding:16px 0;
  font-size:13px;
  color:var(--tx-3);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.breadcrumb-bar .sep{margin:0 8px;color:rgba(255,255,255,.2);}
.breadcrumb-bar a{color:var(--tx-3);}
.breadcrumb-bar a:hover{color:var(--c-primary);}
.breadcrumb-bar .current{color:var(--tx-1);}

/* ============ 页面 Hero ============ */
.page-hero{
  position:relative;
  margin-top:24px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  min-height:320px;
  display:flex;
  align-items:flex-end;
  isolation:isolate;
}
.page-hero .hero-img{
  position:absolute;
  inset:0;
  width:100%;height:100%;
  object-fit:cover;
  object-position:82% 40%;
  z-index:-2;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:
    radial-gradient(680px 340px at 12% 78%,rgba(109,92,255,.24),transparent 68%),
    linear-gradient(100deg,rgba(6,11,24,.96) 0%,rgba(6,11,24,.82) 42%,rgba(6,11,24,.5) 100%);
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:linear-gradient(180deg,rgba(6,11,24,.1) 0%,rgba(6,11,24,.55) 62%,rgba(6,11,24,.94) 100%);
}
.hero-inner{
  position:relative;
  padding:clamp(32px,5vw,52px) clamp(22px,4vw,44px);
  max-width:860px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  font-size:12.5px;
  letter-spacing:.6px;
  color:var(--tx-1);
  background:var(--glass);
  border:1px solid var(--line);
  margin-bottom:18px;
}
.eyebrow .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--c-warm);
  box-shadow:0 0 10px rgba(255,184,77,.9);
}
.page-hero h1{
  font-size:clamp(28px,4.2vw,44px);
  line-height:1.22;
  margin-bottom:14px;
}
.page-hero h1 span{
  display:block;
  color:var(--c-primary);
  text-shadow:0 0 26px rgba(34,211,238,.35);
}
.hero-sub{
  font-size:clamp(14.5px,1.6vw,16.5px);
  color:var(--tx-2);
  line-height:1.8;
  max-width:640px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 26px;
  margin-top:22px;
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.09);
  font-size:13px;
  color:var(--tx-3);
}
.hero-meta strong{
  color:var(--tx-1);
  font-variant-numeric:tabular-nums;
  font-weight:600;
  margin-right:4px;
}

/* ============ 胶囊切换条 ============ */
.switch-bar{
  margin-top:28px;
  padding:14px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  align-items:center;
}
.switch-bar .switch-label{
  font-size:12.5px;
  letter-spacing:1px;
  color:var(--tx-3);
  padding:0 6px;
}
.pill{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 18px;
  border-radius:999px;
  font-size:14px;
  color:var(--tx-2);
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  transition:all .2s var(--ease);
}
.pill:hover{
  color:#fff;
  border-color:var(--line-lit);
  background:rgba(34,211,238,.1);
  transform:translateY(-2px);
}
.pill.active{
  color:#04121A;
  font-weight:600;
  border-color:transparent;
  background:linear-gradient(135deg,var(--c-primary),var(--c-accent));
  box-shadow:0 8px 22px rgba(34,211,238,.28);
}
.pill.active:hover{transform:none;color:#04121A;}

/* ============ 板块通用 ============ */
.section{
  padding:clamp(48px,6.5vw,84px) 0 0;
}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:28px;
}
.section-head h2{
  font-size:clamp(23px,3vw,32px);
  position:relative;
  padding-left:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:.22em;bottom:.22em;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-accent));
  box-shadow:0 0 14px rgba(34,211,238,.7);
}
.section-head p{
  font-size:14.5px;
  color:var(--tx-3);
  max-width:560px;
  margin-top:10px;
}
.lead-text{
  font-size:15px;
  color:var(--tx-2);
  max-width:760px;
  line-height:1.9;
}

/* ============ 双列大卡 ============ */
.big-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.card-big{
  display:flex;
  flex-direction:column;
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  background-color:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card-big:hover{
  transform:translateY(-6px);
  border-color:var(--line-lit);
  box-shadow:var(--shadow-hover),0 0 0 1px var(--line-lit);
}
.card-big .thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:linear-gradient(135deg,#101B33,#0B1426);
}
.card-big .thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .35s var(--ease);
}
.card-big:hover .thumb img{transform:scale(1.03);}
.card-big .thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,11,24,0) 40%,rgba(6,11,24,.72) 100%);
}
.card-big .tag{
  position:absolute;
  top:14px;left:14px;
  z-index:2;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;
  color:var(--tx-1);
  background:rgba(6,11,24,.72);
  border:1px solid var(--line-lit);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}
.card-big .body{
  padding:22px 24px 24px;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1;
}
.card-big h3{
  font-size:21px;
  line-height:1.35;
}
.card-big .desc{
  font-size:14.5px;
  color:var(--tx-2);
  line-height:1.85;
}
.mini-list{
  display:flex;
  flex-direction:column;
  gap:8px;
  margin-top:2px;
}
.mini-list li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--tx-2);
  line-height:1.7;
}
.mini-list li::before{
  content:"";
  position:absolute;
  left:2px;top:.72em;
  width:5px;height:5px;
  border-radius:50%;
  background:var(--c-primary);
  box-shadow:0 0 8px rgba(34,211,238,.85);
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:auto;
  padding-top:12px;
  font-size:14.5px;
  font-weight:600;
  color:var(--c-primary);
}
.text-link svg{width:16px;height:16px;transition:transform .2s var(--ease);}
.card-big:hover .text-link svg,
.text-link:hover svg{transform:translateX(4px);}
@media (max-width:991.98px){
  .big-grid{grid-template-columns:1fr;}
}

/* ============ 能力四宫格 ============ */
.cap-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.cap-card{
  padding:26px 22px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  transition:border-color .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.cap-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-lit);
  background:var(--glass-hover);
}
.cap-card .ico{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:12px;
  margin-bottom:16px;
  background:linear-gradient(145deg,rgba(34,211,238,.16),rgba(109,92,255,.16));
  border:1px solid rgba(34,211,238,.28);
}
.cap-card .ico svg{width:22px;height:22px;stroke:var(--c-primary);}
.cap-card h3{font-size:17.5px;margin-bottom:8px;}
.cap-card p{font-size:14px;line-height:1.8;color:var(--tx-2);}
.cap-num{
  font-variant-numeric:tabular-nums;
  font-weight:600;
  font-size:26px;
  color:var(--c-warm);
  letter-spacing:.5px;
  margin-bottom:6px;
  display:block;
}
@media (max-width:1199.98px){
  .cap-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:575.98px){
  .cap-grid{grid-template-columns:1fr;}
}

/* ============ 场景与流程 ============ */
.two-col{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:24px;
}
.panel{
  padding:clamp(22px,3vw,32px);
  border-radius:var(--radius);
  background:var(--bg-1);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.panel h3{
  font-size:20px;
  margin-bottom:18px;
}
.scene-list{display:flex;flex-direction:column;gap:14px;}
.scene-list li{
  padding:16px 18px;
  border-radius:var(--radius-sm);
  background:rgba(255,255,255,.035);
  border:1px solid var(--line);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.scene-list li:hover{border-color:var(--line-lit);background:rgba(34,211,238,.06);}
.scene-list strong{
  display:block;
  color:var(--tx-1);
  font-size:15.5px;
  margin-bottom:4px;
}
.scene-list span{font-size:14px;color:var(--tx-2);line-height:1.75;}

.steps{display:flex;flex-direction:column;gap:0;}
.step{
  position:relative;
  padding:0 0 26px 46px;
}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";
  position:absolute;
  left:15px;
  top:32px;
  bottom:0;
  width:1px;
  background:linear-gradient(180deg,rgba(34,211,238,.55),rgba(109,92,255,.15));
}
.step:last-child::before{display:none;}
.step .num{
  position:absolute;
  left:0;top:0;
  width:32px;height:32px;
  display:grid;place-items:center;
  border-radius:50%;
  font-size:13px;
  font-weight:600;
  font-variant-numeric:tabular-nums;
  color:var(--c-primary);
  background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.4);
  box-shadow:0 0 16px rgba(34,211,238,.18);
}
.step h4{font-size:16px;margin-bottom:5px;}
.step p{font-size:14px;line-height:1.8;color:var(--tx-2);}
@media (max-width:991.98px){
  .two-col{grid-template-columns:1fr;}
}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-wrap .accordion-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  margin-bottom:12px;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-wrap .accordion-item:hover{border-color:rgba(34,211,238,.3);}
.faq-wrap .accordion-button{
  background:transparent;
  color:var(--tx-1);
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  padding:18px 22px;
  box-shadow:none;
  border-radius:0;
}
.faq-wrap .accordion-button:not(.collapsed){
  color:var(--c-primary);
  background:rgba(34,211,238,.07);
  box-shadow:inset 3px 0 0 var(--c-primary);
}
.faq-wrap .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-wrap .accordion-button:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:-3px;
}
.faq-wrap .accordion-button::after{
  filter:brightness(0) invert(1);
  opacity:.7;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.faq-wrap .accordion-button:not(.collapsed)::after{
  filter:none;
  opacity:1;
}
.faq-wrap .accordion-body{
  padding:16px 22px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--tx-2);
  border-top:1px solid rgba(255,255,255,.07);
}

/* ============ CTA ============ */
.cta-block{
  position:relative;
  overflow:hidden;
  padding:clamp(30px,5vw,56px);
  border-radius:var(--radius-lg);
  background:
    radial-gradient(520px 260px at 12% 0%,rgba(34,211,238,.16),transparent 70%),
    radial-gradient(480px 260px at 92% 110%,rgba(109,92,255,.2),transparent 70%),
    var(--bg-1);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:clamp(24px,4vw,52px);
  align-items:center;
}
.cta-block h2{
  font-size:clamp(24px,3.2vw,32px);
  margin-bottom:12px;
}
.cta-block p{
  font-size:15px;
  color:var(--tx-2);
  line-height:1.9;
  max-width:520px;
}
.cta-form{display:flex;flex-direction:column;gap:12px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.form-control{
  height:48px;
  padding:0 16px;
  font-size:15px;
  color:var(--tx-1);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.form-control::placeholder{color:var(--tx-3);}
.form-control:focus{
  background:rgba(255,255,255,.06);
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(34,211,238,.22);
  color:var(--tx-1);
  outline:none;
}
.btn-glow{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:48px;
  padding:0 26px;
  border:0;
  border-radius:var(--radius-sm);
  font-size:15.5px;
  font-weight:600;
  color:#04121A;
  background:linear-gradient(135deg,var(--c-primary),#4FE4F5);
  box-shadow:0 0 0 1px rgba(34,211,238,.5),0 10px 28px rgba(34,211,238,.28);
  cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.btn-glow:hover{
  transform:translateY(-2px);
  filter:brightness(1.07);
  box-shadow:0 0 0 1px rgba(34,211,238,.75),0 16px 36px rgba(34,211,238,.4);
  color:#04121A;
}
.btn-glow:active{transform:translateY(0);}
.form-tip{
  font-size:12px;
  color:var(--tx-3);
  line-height:1.7;
}
@media (max-width:991.98px){
  .cta-block{grid-template-columns:1fr;}
}
@media (max-width:575.98px){
  .form-row{grid-template-columns:1fr;}
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:clamp(56px,7vw,96px);
  padding-top:clamp(44px,5.5vw,72px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,20,38,.6),rgba(6,11,24,.95));
  position:relative;
  z-index:1;
}
.footer-top{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:36px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{
  font-size:14px;
  line-height:1.85;
  color:var(--tx-3);
  max-width:340px;
}
.footer-contact{
  margin-top:16px;
  font-size:13px;
  line-height:1.9;
  color:var(--tx-3);
}
.footer-col h5{
  font-size:14px;
  font-weight:600;
  color:var(--tx-1);
  margin-bottom:14px;
  letter-spacing:.4px;
}
.footer-col ul{display:flex;flex-direction:column;gap:9px;}
.footer-col a{
  font-size:14px;
  color:var(--tx-2);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-col a:hover{color:var(--c-primary);padding-left:3px;}
.footer-note{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:16px 20px;
  border-radius:var(--radius-sm);
  background:var(--glass);
  border:1px solid var(--line);
  font-size:12.5px;
  line-height:1.8;
  color:var(--tx-3);
}
.footer-note svg{
  width:18px;height:18px;
  flex-shrink:0;
  margin-top:3px;
  color:var(--c-warm);
}
.footer-bottom{
  margin-top:22px;
  padding:20px 0 28px;
  border-top:1px solid rgba(255,255,255,.06);
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  align-items:center;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--tx-3);
}
.footer-bottom .policy{display:flex;flex-wrap:wrap;gap:16px;}
.footer-bottom a{color:var(--tx-3);}
.footer-bottom a:hover{color:var(--c-primary);}
@media (max-width:1199.98px){
  .footer-top{grid-template-columns:1.4fr 1fr 1fr;}
}
@media (max-width:767.98px){
  .footer-top{grid-template-columns:1fr 1fr;gap:26px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:575.98px){
  .footer-top{grid-template-columns:1fr;}
}

/* 动效降级 */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
  }
  .card-big:hover,.cap-card:hover,.btn-glow:hover,.nav-cta:hover{transform:none !important;}
}

/* roulang page: category4 */
:root{
  --bg-0:#060B18;
  --bg-1:#0B1426;
  --bg-2:#101B33;
  --glass:rgba(255,255,255,.055);
  --glass-hover:rgba(255,255,255,.085);
  --line:rgba(255,255,255,.08);
  --line-lit:rgba(34,211,238,.45);
  --c-primary:#22D3EE;
  --c-accent:#6D5CFF;
  --c-warm:#FFB84D;
  --tx-1:#E8EEF9;
  --tx-2:#A9B6CE;
  --tx-3:#6E7C99;
  --ok:#34D399;
  --warn:#F87171;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-1:0 12px 32px rgba(0,0,0,.45);
  --shadow-2:0 20px 48px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);

  --bs-body-bg:#060B18;
  --bs-body-color:#A9B6CE;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-primary-rgb:34,211,238;
  --bs-link-color:#22D3EE;
  --bs-link-hover-color:#6D5CFF;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --bs-border-radius:12px;
  --bs-emphasis-color:#E8EEF9;
}

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

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  min-height:100vh;
  color:var(--tx-2);
  background-color:var(--bg-0);
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:48px 48px, 48px 48px;
  background-position:0 0, 0 0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{max-width:100%;display:block;border:0;}

a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--c-accent);text-decoration:none;}
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:3px;
  border-radius:6px;
}

h1,h2,h3,h4,h5,h6{
  color:var(--tx-1);
  margin:0 0 14px;
  line-height:1.25;
  letter-spacing:.2px;
  font-weight:700;
}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;}

.container{
  width:100%;
  max-width:1320px;
  margin-inline:auto;
  padding-inline:24px;
}

.row{--bs-gutter-x:24px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(6,11,24,.72);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .2s var(--ease), box-shadow .2s var(--ease);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:1px;
  background:linear-gradient(90deg, transparent, var(--c-primary), var(--c-accent), transparent);
  opacity:.7;
}
.site-header.is-scrolled{
  background:rgba(6,11,24,.92);
  box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:72px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--tx-1);
  text-decoration:none;
  flex-shrink:0;
}
.brand:hover{color:var(--tx-1);}
.brand-mark{
  width:38px;
  height:38px;
  border-radius:11px;
  display:grid;
  place-items:center;
  background:linear-gradient(150deg, rgba(34,211,238,.16), rgba(109,92,255,.18));
  border:1px solid var(--line);
  box-shadow:inset 0 0 18px rgba(34,211,238,.12);
  flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text strong{
  font-size:18px;
  font-weight:700;
  letter-spacing:.4px;
  color:var(--tx-1);
}
.brand-text em{
  font-style:normal;
  font-size:13px;
  color:var(--c-primary);
  letter-spacing:1px;
  margin-top:3px;
}

.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:10px 14px;
  font-size:15px;
  color:var(--tx-2);
  white-space:nowrap;
  transition:color .2s var(--ease), transform .2s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:0;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg, var(--c-primary), var(--c-accent));
  opacity:0;
  transform:scaleX(.55);
  transition:opacity .2s var(--ease), transform .2s var(--ease);
}
.nav-links a:hover{color:var(--tx-1);transform:translateY(1px);}
.nav-links a:hover::after{opacity:.45;transform:scaleX(1);}
.nav-links a.active{color:var(--c-primary);}
.nav-links a.active::after{
  opacity:1;
  transform:scaleX(1);
  box-shadow:0 0 12px rgba(34,211,238,.7), 0 -6px 14px rgba(34,211,238,.25);
}

.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:42px;
  padding:0 20px;
  border-radius:var(--r-sm);
  font-size:14px;
  font-weight:700;
  color:#04101C;
  background:linear-gradient(120deg, var(--c-primary), #4AC5F0);
  border:1px solid rgba(34,211,238,.55);
  box-shadow:0 0 0 1px rgba(34,211,238,.32), 0 10px 28px rgba(34,211,238,.26);
  white-space:nowrap;
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), filter .2s var(--ease);
  flex-shrink:0;
}
.nav-cta:hover{
  color:#04101C;
  transform:translateY(-2px);
  filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(34,211,238,.6), 0 14px 34px rgba(34,211,238,.36);
}
.nav-cta:active{transform:translateY(0);}

.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--tx-1);
  place-items:center;
  cursor:pointer;
  transition:border-color .2s var(--ease), background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--line-lit);background:var(--glass-hover);}
.nav-toggle svg{width:22px;height:22px;}

.nav-drawer-cta{display:none;}

/* ============ 分类页头部 ============ */
.cat-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  isolation:isolate;
}
.cat-hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center 32%;
  opacity:.55;
  filter:saturate(.9);
  z-index:-2;
}
.cat-hero-mask{
  position:absolute;
  inset:0;
  z-index:-1;
  background:
    radial-gradient(900px 380px at 10% 112%, rgba(109,92,255,.28), transparent 66%),
    radial-gradient(700px 320px at 90% -12%, rgba(34,211,238,.20), transparent 62%),
    linear-gradient(180deg, rgba(6,11,24,.74) 0%, rgba(6,11,24,.94) 68%, var(--bg-0) 100%);
}
.cat-hero-inner{
  position:relative;
  padding:76px 0 64px;
  max-width:820px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--glass);
  font-size:12px;
  letter-spacing:1.5px;
  color:var(--tx-2);
  margin-bottom:20px;
}
.eyebrow .dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--c-warm);
  box-shadow:0 0 10px rgba(255,184,77,.9);
}
.cat-hero h1{
  font-size:clamp(28px, 4.2vw, 42px);
  line-height:1.22;
  margin-bottom:16px;
  background:linear-gradient(100deg, #FFFFFF 10%, #C8E9F5 55%, #A9B6CE 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.cat-hero-sub{
  font-size:16px;
  color:var(--tx-2);
  max-width:620px;
  margin:0;
}

/* ============ 面包屑 ============ */
.crumb-bar{
  border-bottom:1px solid var(--line);
  background:rgba(11,20,38,.5);
}
.crumb-inner{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  padding:14px 0;
  font-size:13px;
  color:var(--tx-3);
}
.crumb-inner a{color:var(--tx-3);}
.crumb-inner a:hover{color:var(--c-primary);}
.crumb-inner .sep{color:rgba(110,124,153,.6);}
.crumb-inner .current{color:var(--tx-1);}

/* ============ 板块通用 ============ */
.section{
  padding-block:clamp(56px, 7vw, 96px);
}
.section-tight{padding-block:clamp(40px, 5vw, 64px);}
.section-head{
  max-width:760px;
  margin-bottom:32px;
}
.section-head h2{
  font-size:clamp(24px, 3vw, 32px);
  margin-bottom:12px;
  position:relative;
  padding-left:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;
  top:8px;
  bottom:8px;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg, var(--c-primary), var(--c-accent));
  box-shadow:0 0 14px rgba(34,211,238,.65);
}
.section-head p{
  font-size:15px;
  color:var(--tx-2);
  margin:0;
}
.narrow{
  max-width:900px;
  margin-inline:auto;
}

/* ============ 胶囊 ============ */
.chips{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:28px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:38px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--tx-2);
  font-size:14px;
  transition:color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease);
}
.chip:hover{
  color:var(--tx-1);
  border-color:var(--line-lit);
  background:var(--glass-hover);
  transform:translateY(-1px);
}
.chip.is-active{
  color:#04101C;
  font-weight:700;
  border-color:transparent;
  background:linear-gradient(120deg, var(--c-primary), var(--c-accent));
  box-shadow:0 8px 22px rgba(34,211,238,.24);
}

/* ============ 编号条目 ============ */
.index-list{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.index-item > a{
  display:grid;
  grid-template-columns:56px 1fr 40px;
  align-items:center;
  gap:18px;
  padding:22px 24px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  color:inherit;
  box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease);
}
.index-item > a:hover{
  color:inherit;
  transform:translateY(-3px);
  border-color:var(--line-lit);
  background:var(--glass-hover);
  box-shadow:var(--shadow-2), 0 0 0 1px var(--line-lit);
}
.idx-no{
  font-variant-numeric:tabular-nums;
  font-weight:600;
  font-size:20px;
  letter-spacing:1px;
  color:var(--c-warm);
  text-align:center;
  line-height:1;
}
.idx-body strong{
  display:block;
  font-size:17px;
  font-weight:700;
  color:var(--tx-1);
  line-height:1.45;
  margin-bottom:6px;
}
.idx-body em{
  display:block;
  font-style:normal;
  font-size:14px;
  line-height:1.7;
  color:var(--tx-2);
}
.idx-arrow{
  width:36px;
  height:36px;
  border-radius:50%;
  border:1px solid var(--line);
  display:grid;
  place-items:center;
  color:var(--tx-3);
  transition:transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.idx-arrow svg{width:16px;height:16px;}
.index-item > a:hover .idx-arrow{
  transform:translateX(4px);
  color:#04101C;
  background:var(--c-primary);
  border-color:transparent;
}

/* ============ 图文横幅 ============ */
.media-band{
  margin:36px 0 0;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-2);
  box-shadow:var(--shadow-1);
}
.media-band img{
  width:100%;
  aspect-ratio:21 / 9;
  object-fit:cover;
  opacity:.92;
}
.media-band figcaption{
  padding:12px 18px;
  font-size:13px;
  color:var(--tx-3);
  border-top:1px solid var(--line);
  background:rgba(11,20,38,.7);
}

/* ============ 流程三步 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:20px;
}
.step{
  position:relative;
  padding:28px 24px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(165deg, rgba(16,27,51,.95), rgba(11,20,38,.72));
  box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.step:hover{
  transform:translateY(-4px);
  border-color:var(--line-lit);
  box-shadow:var(--shadow-2);
}
.step-no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:12px;
  margin-bottom:16px;
  font-variant-numeric:tabular-nums;
  font-weight:600;
  font-size:16px;
  color:var(--c-primary);
  border:1px solid rgba(34,211,238,.32);
  background:rgba(34,211,238,.08);
}
.step h3{
  font-size:18px;
  margin-bottom:10px;
}
.step p{
  font-size:14.5px;
  color:var(--tx-2);
  margin:0;
}

/* ============ FAQ ============ */
.faq-list{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.faq-item{
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  overflow:hidden;
  transition:border-color .2s var(--ease), background .2s var(--ease);
}
.faq-item[open]{
  border-color:var(--line-lit);
  background:var(--glass-hover);
  box-shadow:0 0 0 1px rgba(34,211,238,.18);
}
.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(--tx-1);
  min-height:56px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  width:26px;
  height:26px;
  border-radius:50%;
  display:grid;
  place-items:center;
  border:1px solid var(--line);
  color:var(--c-primary);
  flex-shrink:0;
  transition:border-color .2s var(--ease), color .2s var(--ease);
}
.faq-icon svg{width:14px;height:14px;}
.faq-icon .v{transition:opacity .2s var(--ease);}
.faq-item[open] .faq-icon{border-color:var(--line-lit);color:var(--c-accent);}
.faq-item[open] .faq-icon .v{opacity:0;}
.faq-answer{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--tx-2);
  border-top:1px solid var(--line);
  padding-top:16px;
  margin-top:0;
}

/* ============ CTA ============ */
.cta-box{
  position:relative;
  padding:clamp(28px, 4vw, 48px);
  border-radius:var(--r-lg);
  border:1px solid rgba(34,211,238,.28);
  background:
    radial-gradient(700px 300px at 12% 0%, rgba(109,92,255,.22), transparent 62%),
    radial-gradient(600px 260px at 92% 100%, rgba(34,211,238,.18), transparent 60%),
    linear-gradient(160deg, rgba(16,27,51,.96), rgba(11,20,38,.86));
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.cta-box h2{
  font-size:clamp(22px, 2.8vw, 30px);
  margin-bottom:12px;
}
.cta-box > p{
  max-width:640px;
  color:var(--tx-2);
  font-size:15px;
}
.cta-form{
  margin-top:24px;
}
.form-control{
  height:48px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--tx-1);
  font-size:15px;
  padding:0 16px;
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
}
.form-control::placeholder{color:var(--tx-3);}
.form-control:focus{
  background:rgba(255,255,255,.06);
  border-color:var(--c-primary);
  color:var(--tx-1);
  box-shadow:0 0 0 3px rgba(34,211,238,.18);
  outline:none;
}
.btn-neon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--r-sm);
  border:1px solid rgba(34,211,238,.55);
  background:linear-gradient(120deg, var(--c-primary), #4AC5F0);
  color:#04101C;
  font-size:15px;
  font-weight:700;
  letter-spacing:.5px;
  cursor:pointer;
  box-shadow:0 0 0 1px rgba(34,211,238,.5), 0 10px 28px rgba(34,211,238,.28);
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), filter .2s var(--ease);
}
.btn-neon:hover{
  color:#04101C;
  transform:translateY(-2px);
  filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(34,211,238,.7), 0 16px 36px rgba(34,211,238,.36);
}
.btn-neon:active{transform:translateY(0);}
.btn-glass{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--tx-1);
  font-size:15px;
  font-weight:600;
  transition:border-color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease), color .2s var(--ease);
}
.btn-glass:hover{
  color:var(--tx-1);
  border-color:var(--line-lit);
  background:var(--glass-hover);
  transform:translateY(-2px);
}
.form-note{
  margin-top:14px;
  font-size:12.5px;
  line-height:1.7;
  color:var(--tx-3);
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:clamp(40px, 6vw, 80px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(11,20,38,.6), rgba(6,11,24,.98));
  padding-top:clamp(40px, 5vw, 64px);
}
.footer-top{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;
  gap:32px 28px;
  padding-bottom:40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:var(--tx-2);
  max-width:340px;
}
.footer-contact{
  margin-top:14px;
  font-size:13px;
  line-height:1.9;
  color:var(--tx-3);
}
.footer-col h5{
  font-size:14px;
  font-weight:600;
  color:var(--tx-1);
  letter-spacing:.5px;
  margin-bottom:16px;
}
.footer-col ul{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-col ul a{
  font-size:14px;
  color:var(--tx-2);
  transition:color .2s var(--ease), padding-left .2s var(--ease);
}
.footer-col ul a:hover{
  color:var(--c-primary);
  padding-left:4px;
}
.footer-note{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:16px 20px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  font-size:12.5px;
  line-height:1.8;
  color:var(--tx-3);
  margin-bottom:24px;
}
.footer-note svg{
  width:18px;
  height:18px;
  flex-shrink:0;
  margin-top:2px;
  color:var(--c-warm);
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:18px 0 28px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--tx-3);
}
.footer-bottom p{margin:0;}
.footer-bottom-links{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom-links a{color:var(--tx-3);font-size:13px;}
.footer-bottom-links a:hover{color:var(--c-primary);}
.footer-bottom-links span{color:rgba(110,124,153,.8);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .footer-top{grid-template-columns:1.4fr 1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
}

@media (max-width:991.98px){
  .nav-inner{height:60px;gap:12px;}
  .nav-toggle{display:grid;margin-left:auto;}
  .nav-cta{display:none;}
  .brand-mark{width:34px;height:34px;border-radius:10px;}
  .brand-text strong{font-size:16px;}
  .brand-text em{font-size:12px;}

  .nav-links{
    position:fixed;
    top:60px;
    left:0;
    right:0;
    bottom:0;
    margin-left:0;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:12px 20px 28px;
    background:rgba(6,11,24,.97);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    border-top:1px solid var(--line);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity .22s var(--ease), transform .22s var(--ease), visibility .22s var(--ease);
    z-index:70;
  }
  .nav-links.is-open{
    opacity:1;
    visibility:visible;
    transform:none;
  }
  .nav-links a{
    height:52px;
    padding:0 4px;
    font-size:16px;
    justify-content:space-between;
    border-bottom:1px solid var(--line);
    transform:none;
  }
  .nav-links a:hover{transform:none;}
  .nav-links a::after{
    content:"›";
    position:static;
    left:auto;
    right:auto;
    bottom:auto;
    width:auto;
    height:auto;
    background:none;
    box-shadow:none;
    opacity:1;
    transform:none;
    color:var(--tx-3);
    font-size:20px;
    line-height:1;
    border-radius:0;
  }
  .nav-links a.active::after{
    color:var(--c-primary);
    box-shadow:none;
    transform:none;
  }
  .nav-links a.active{border-bottom-color:rgba(34,211,238,.4);}
  .nav-drawer-cta{
    display:flex !important;
    align-items:center;
    justify-content:center;
    margin-top:22px;
    height:48px;
    border-radius:var(--r-sm);
    border:1px solid rgba(34,211,238,.55) !important;
    background:linear-gradient(120deg, var(--c-primary), var(--c-accent));
    color:#04101C !important;
    font-weight:700;
    box-shadow:0 0 0 1px rgba(34,211,238,.4), 0 10px 26px rgba(34,211,238,.26);
  }
  .nav-drawer-cta::after{display:none;}
  body.nav-locked{overflow:hidden;}

  .cat-hero-inner{padding:56px 0 48px;}
  .steps{grid-template-columns:1fr;}
  .index-item > a{grid-template-columns:44px 1fr 32px;gap:14px;padding:18px;}
  .idx-no{font-size:18px;}
  .idx-body strong{font-size:16px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px;}
}

@media (max-width:575.98px){
  .container{padding-inline:16px;}
  body{font-size:15.5px;}
  .cat-hero-inner{padding:44px 0 40px;}
  .cat-hero-sub{font-size:14.5px;}
  .index-item > a{
    grid-template-columns:38px 1fr 28px;
    padding:16px;
    gap:12px;
    border-radius:14px;
  }
  .idx-arrow{width:28px;height:28px;}
  .idx-arrow svg{width:13px;height:13px;}
  .idx-body em{font-size:13.5px;}
  .faq-item summary{font-size:16px;padding:16px 18px;}
  .faq-answer{padding:14px 18px 18px;font-size:14.5px;}
  .btn-neon, .btn-glass{width:100%;}
  .footer-top{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .media-band img{aspect-ratio:16 / 9;}
}

@media (prefers-reduced-motion: reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .index-item > a:hover,
  .step:hover,
  .btn-neon:hover,
  .btn-glass:hover,
  .nav-cta:hover,
  .chip:hover{
    transform:none;
  }
}