/* roulang page: index */
:root{
  --c-bg:#0A0B10;
  --c-bg-soft:#10131C;
  --c-surface:#161A26;
  --c-surface-2:#1D2233;
  --c-line:rgba(255,255,255,.08);
  --c-line-strong:rgba(255,255,255,.16);
  --c-primary:#6F4BFF;
  --c-primary-glow:rgba(111,75,255,.45);
  --c-accent:#2CE8C0;
  --c-highlight:#D8FF45;
  --c-text:#EDEFFA;
  --c-text-2:#A3ABC2;
  --c-text-3:#6E768C;
  --c-invert-bg:#F4F5F9;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-glow:0 16px 40px var(--c-primary-glow);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.75;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index: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:64px 64px;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.5px;line-height:1.28}
p{margin:0}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px;position:relative;z-index:1}
.mono{font-family:ui-monospace,"JetBrains Mono",Menlo,monospace}
.sec{padding:96px 0;position:relative;z-index:1}
.sec-sm{padding:64px 0;position:relative;z-index:1}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.sec-head h2{font-size:32px}
.sec-head p{color:var(--c-text-2);font-size:15px;margin-top:10px;max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:1px;color:var(--c-accent);text-transform:uppercase}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--c-accent);display:inline-block}

/* header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,11,16,.78);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(10,11,16,.98);box-shadow:0 12px 32px rgba(0,0,0,.5)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:70px;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:-.5px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--c-primary),#3A22A8);
  display:grid;place-items:center;
  box-shadow:0 0 0 1px rgba(255,255,255,.12),0 8px 20px rgba(111,75,255,.35);
  font-size:15px;font-weight:800;color:#fff;
}
.brand-name b{color:var(--c-highlight)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  position:relative;display:block;padding:10px 14px;font-size:15.5px;color:var(--c-text-2);
  border-radius:8px;transition:color .2s ease,background .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--c-accent);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;border-radius:2px;
  box-shadow:0 0 10px rgba(44,232,192,.8);
}
.nav-links a:hover{color:var(--c-text);background:rgba(255,255,255,.04)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:#fff;text-shadow:0 0 12px rgba(44,232,192,.45)}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line-strong);
  background:transparent;display:grid;place-items:center;cursor:pointer;color:var(--c-text-2);
  transition:all .2s ease;
}
.icon-btn:hover{color:var(--c-text);border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(111,75,255,.14)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;transition:all .2s ease;line-height:1;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 10px 24px rgba(111,75,255,.3)}
.btn-primary:hover{background:#7F5FFF;transform:translateY(-2px);box-shadow:var(--shadow-glow)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;border-color:var(--c-line-strong);color:var(--c-text)}
.btn-ghost:hover{border-color:var(--c-accent);background:rgba(44,232,192,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:scale(.98)}
.btn-accent{background:var(--c-highlight);color:#0A0B10}
.btn-accent:hover{background:#E4FF6B;transform:translateY(-2px);box-shadow:0 14px 32px rgba(216,255,69,.25)}
.btn-accent:active{transform:scale(.98)}
.btn-block{width:100%}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:700;color:var(--c-accent)}
.text-link span{transition:transform .2s ease}
.text-link:hover span{transform:translateX(4px)}
.burger{display:none}

/* hero */
.hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(rgba(10,11,16,.82),rgba(10,11,16,.9)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.hero::after{
  content:"";position:absolute;width:520px;height:520px;right:-140px;top:-160px;border-radius:50%;
  background:radial-gradient(circle,rgba(111,75,255,.42),transparent 68%);
  filter:blur(10px);pointer-events:none;
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;
  padding:88px 0 96px;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;font-size:12.5px;font-weight:700;
  color:var(--c-accent);border:1px solid rgba(44,232,192,.4);background:rgba(44,232,192,.08);
  margin-bottom:22px;letter-spacing:.4px;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--c-highlight);box-shadow:0 0 10px var(--c-highlight);font-style:normal}
.hero h1{font-size:48px;line-height:1.2;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--c-highlight);text-shadow:0 0 26px rgba(216,255,69,.28)}
.hero-sub{font-size:17.5px;color:var(--c-text-2);max-width:560px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px}
.hero-stats .num{font-size:26px;font-weight:800;color:var(--c-highlight);font-family:ui-monospace,"JetBrains Mono",monospace;line-height:1.2}
.hero-stats .lbl{font-size:13px;color:var(--c-text-3);margin-top:4px}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/3;border-radius:20px;border:1px solid var(--c-line-strong);
  box-shadow:0 30px 70px rgba(0,0,0,.6),0 0 60px rgba(111,75,255,.22);
}
.hero-visual .float-card{
  position:absolute;left:-24px;bottom:28px;
  background:rgba(16,19,28,.94);border:1px solid var(--c-line-strong);border-radius:14px;
  padding:14px 18px;backdrop-filter:blur(8px);box-shadow:var(--shadow-card);
}
.hero-visual .float-card .t{font-size:12px;color:var(--c-text-3)}
.hero-visual .float-card .v{font-size:15px;font-weight:700;margin-top:4px}
.hero-visual .float-card .v b{color:var(--c-accent)}

/* claims */
.claims{border-bottom:1px solid var(--c-line);background:var(--c-bg-soft)}
.claims-lead{
  display:flex;align-items:center;gap:16px;padding:28px 0;
  border-bottom:1px solid var(--c-line);
}
.claims-lead .tag{
  font-family:ui-monospace,"JetBrains Mono",monospace;font-size:12px;color:#0A0B10;background:var(--c-highlight);
  padding:4px 10px;border-radius:6px;font-weight:700;flex-shrink:0;
}
.claims-lead p{font-size:16.5px;color:var(--c-text-2)}
.claims-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:44px 0}
.claim-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:28px;transition:all .22s ease;
}
.claim-card:hover{transform:translateY(-4px);border-color:var(--c-primary);box-shadow:var(--shadow-glow)}
.claim-card .ico{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
  background:rgba(111,75,255,.16);border:1px solid rgba(111,75,255,.36);color:var(--c-accent);
  font-size:20px;margin-bottom:18px;
}
.claim-card h3{font-size:20px;margin-bottom:10px}
.claim-card p{color:var(--c-text-2);font-size:15.5px}

/* story */
.story{display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:center}
.story-img{position:relative}
.story-img img{width:100%;aspect-ratio:3/2;border-radius:var(--radius-card);border:1px solid var(--c-line)}
.story-img::before{
  content:"";position:absolute;inset:-14px -14px 22px 22px;border:1px solid rgba(44,232,192,.28);
  border-radius:var(--radius-card);z-index:-1;
}
.story h2{font-size:32px;margin:16px 0 20px}
.story p{color:var(--c-text-2);margin-bottom:16px;font-size:16.5px}
.story .text-link{margin-top:8px}
.story-points{margin-top:26px;display:grid;gap:14px}
.story-points li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--c-text-2)}
.story-points li b{color:var(--c-highlight);font-family:ui-monospace,"JetBrains Mono",monospace;flex-shrink:0}

/* cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;
  transition:all .22s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--c-primary);box-shadow:var(--shadow-glow)}
.card-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--c-surface-2)}
.card-media img{width:100%;height:100%;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-media::after{content:"";position:absolute;inset:auto 0 0 0;height:52%;background:linear-gradient(transparent,rgba(10,11,16,.85))}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19.5px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:15px;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-text-3)}
.badge{display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:700;border:1px solid rgba(44,232,192,.4);background:rgba(44,232,192,.1);color:var(--c-accent);white-space:nowrap}
.badge-solid{background:var(--c-highlight);color:#0A0B10;border-color:transparent}

/* latest list */
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.tab{
  padding:9px 18px;border-radius:999px;font-size:14px;border:1px solid var(--c-line-strong);
  color:var(--c-text-2);background:transparent;cursor:pointer;transition:all .2s ease;
}
.tab:hover{color:var(--c-text);border-color:var(--c-primary)}
.tab.is-active{background:rgba(44,232,192,.12);border-color:rgba(44,232,192,.5);color:var(--c-accent);font-weight:700}
.post-list{display:grid;gap:16px}
.post-item{
  display:grid;grid-template-columns:96px 1fr auto;gap:24px;align-items:center;
  background:var(--c-bg-soft);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:22px 24px;transition:all .2s ease;
}
.post-item:hover{border-color:var(--c-primary);transform:translateY(-3px);box-shadow:var(--shadow-glow)}
.post-idx{
  font-family:ui-monospace,"JetBrains Mono",monospace;font-size:30px;font-weight:700;color:var(--c-highlight);
  text-align:center;opacity:.9;letter-spacing:-1px;
}
.post-main h3{font-size:19px;margin:8px 0 8px;line-height:1.45}
.post-main p{font-size:15px;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-side{display:flex;flex-direction:column;align-items:flex-end;gap:10px;text-align:right}
.post-side .time{font-size:13px;color:var(--c-text-3);font-family:ui-monospace,"JetBrains Mono",monospace;white-space:nowrap}
.post-side .go{
  font-size:13px;font-weight:700;color:var(--c-accent);border:1px solid rgba(44,232,192,.4);
  padding:7px 14px;border-radius:8px;white-space:nowrap;transition:all .2s ease;
}
.post-item:hover .post-side .go{background:rgba(44,232,192,.14)}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center;
  padding:56px 24px;border:1px dashed var(--c-line-strong);border-radius:var(--radius-card);
  background:var(--c-bg-soft);
}
.empty-state .box{
  width:64px;height:64px;border-radius:16px;border:1px solid var(--c-line-strong);
  display:grid;place-items:center;color:var(--c-text-3);font-size:24px;background:var(--c-surface);
}
.empty-state p{color:var(--c-text-2)}

/* trust */
.trust{background:var(--c-invert-bg);color:#0F1220;padding:88px 0;position:relative;z-index:1}
.trust .eyebrow{color:#4B2FE0}
.trust .eyebrow::before{background:#4B2FE0}
.trust h2{font-size:32px;color:#0F1220;margin:16px 0 12px}
.trust .lead{color:#4A5068;max-width:680px;font-size:16.5px}
.trust-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin:48px 0}
.trust-stat{background:#fff;border:1px solid #E1E4EE;border-radius:var(--radius-card);padding:26px}
.trust-stat .num{font-size:34px;font-weight:800;font-family:ui-monospace,"JetBrains Mono",monospace;color:#3A22A8;line-height:1.1}
.trust-stat .lbl{font-size:14px;color:#5B6178;margin-top:8px}
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;margin-bottom:48px}
.logo-wall div{
  height:64px;border-radius:12px;background:#EAECF4;border:1px solid #DFE2ED;
  display:grid;place-items:center;font-size:13px;color:#5B6178;font-weight:700;letter-spacing:.5px;
}
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.quote{background:#fff;border:1px solid #E1E4EE;border-radius:var(--radius-card);padding:26px}
.quote .stars{color:#F0A500;font-size:14px;letter-spacing:2px;margin-bottom:12px}
.quote p{color:#3B4157;font-size:15.5px;margin-bottom:18px}
.quote .who{display:flex;align-items:center;gap:12px;border-top:1px solid #E9EBF3;padding-top:16px}
.quote .avatar{
  width:40px;height:40px;border-radius:50%;background:#3A22A8;color:#fff;display:grid;place-items:center;
  font-weight:700;font-size:15px;
}
.quote .who b{display:block;font-size:14.5px;color:#0F1220}
.quote .who span{font-size:13px;color:#6E7488}

/* faq */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{border:1px solid var(--c-line);border-radius:14px;background:var(--c-surface);margin-bottom:14px;overflow:hidden;transition:border-color .2s ease}
.faq-item[open]{border-color:var(--c-primary);background:var(--c-surface-2)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:22px 26px;font-size:17px;font-weight:700;
  display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:60px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"›";font-size:22px;color:var(--c-accent);transition:transform .22s ease;flex-shrink:0;
}
.faq-item[open] summary::after{transform:rotate(90deg)}
.faq-item .ans{padding:0 26px 24px;color:var(--c-text-2);font-size:15.5px}

/* cta */
.cta{
  position:relative;overflow:hidden;border-top:1px solid var(--c-line);
  background-image:linear-gradient(rgba(10,11,16,.88),rgba(10,11,16,.94)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.cta-inner{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:84px 0}
.cta h2{font-size:32px;margin-bottom:14px}
.cta p{color:var(--c-text-2);max-width:520px}
.sub-form{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.sub-form input{
  flex:1;min-width:220px;background:rgba(22,26,38,.9);border:1px solid var(--c-line-strong);
  border-radius:var(--radius-btn);padding:14px 16px;font-size:15px;transition:all .2s ease;
}
.sub-form input::placeholder{color:var(--c-text-3)}
.sub-form input:focus{border-color:var(--c-accent);outline:none;box-shadow:0 0 0 4px rgba(44,232,192,.14)}
.form-note{font-size:13px;color:var(--c-text-3);margin-top:14px}

/* footer */
.site-footer{background:var(--c-bg-soft);border-top:1px solid var(--c-line);padding:72px 0 0;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px}
.footer-brand p{color:var(--c-text-2);font-size:15px;margin-top:18px;max-width:320px}
.footer-col h4{font-size:15px;margin-bottom:20px;color:var(--c-text)}
.footer-col ul{display:grid;gap:12px}
.footer-col a{font-size:14.5px;color:var(--c-text-2);transition:color .2s ease}
.footer-col a:hover{color:var(--c-accent)}
.footer-contact{display:grid;gap:12px;font-size:14.5px;color:var(--c-text-2)}
.footer-contact .k{color:var(--c-text-3);font-size:13px}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:24px 0;display:flex;align-items:center;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:var(--c-text-3);
}
.to-top{
  border:1px solid var(--c-line-strong);background:transparent;border-radius:8px;
  padding:8px 14px;font-size:13px;color:var(--c-text-2);cursor:pointer;transition:all .2s ease;
}
.to-top:hover{color:var(--c-accent);border-color:var(--c-accent)}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(5,6,10,.72);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:300px;max-width:86%;
  background:var(--c-bg-soft);border-left:1px solid var(--c-line-strong);
  transform:translateX(100%);transition:transform .28s ease;z-index:80;
  padding:22px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-group{font-size:12px;color:var(--c-text-3);letter-spacing:1px;margin:18px 0 10px}
.drawer a{
  display:block;padding:14px 14px;border-radius:10px;font-size:15.5px;color:var(--c-text-2);
  min-height:44px;transition:all .2s ease;
}
.drawer a:hover{background:rgba(255,255,255,.05);color:var(--c-text)}
.drawer a.is-active{color:#fff;background:rgba(44,232,192,.1);border-left:3px solid var(--c-accent)}

@media (max-width:1024px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .burger{display:grid}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:64px 0 72px}
  .hero h1{font-size:36px}
  .hero-visual .float-card{left:12px;bottom:14px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .claims-grid{grid-template-columns:repeat(2,1fr)}
  .story{grid-template-columns:1fr;gap:36px}
  .trust-stats{grid-template-columns:repeat(2,1fr)}
  .logo-wall{grid-template-columns:repeat(3,1fr)}
  .quotes{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding:64px 0}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .sec{padding:72px 0}
}
@media (max-width:640px){
  body{font-size:16px}
  .container{padding:0 16px}
  .sec{padding:56px 0}
  .sec-sm{padding:44px 0}
  .sec-head{flex-direction:column;align-items:flex-start;margin-bottom:28px}
  .sec-head h2{font-size:24px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:16px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .hero-stats{gap:24px}
  .hero-stats .num{font-size:22px}
  .card-grid{grid-template-columns:1fr}
  .claims-grid{grid-template-columns:1fr;padding:32px 0}
  .claims-lead{flex-direction:column;align-items:flex-start;gap:10px}
  .post-item{grid-template-columns:1fr;padding:20px}
  .post-idx{text-align:left;font-size:22px}
  .post-side{align-items:flex-start;text-align:left}
  .trust-stats{grid-template-columns:1fr;margin:32px 0}
  .logo-wall{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .story h2,.cta h2,.trust h2{font-size:24px}
  .sub-form .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --c-bg:#0A0B10;
  --c-bg-soft:#10131C;
  --c-surface:#161A26;
  --c-surface-2:#1D2233;
  --c-line:rgba(255,255,255,.08);
  --c-line-strong:rgba(255,255,255,.16);
  --c-primary:#6F4BFF;
  --c-primary-glow:rgba(111,75,255,.45);
  --c-accent:#2CE8C0;
  --c-highlight:#D8FF45;
  --c-text:#EDEFFA;
  --c-text-2:#A3ABC2;
  --c-text-3:#6E768C;
  --c-invert-bg:#F4F5F9;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px var(--c-primary-glow);
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -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:64px 64px;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer;background:none;border:none;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.5px;line-height:1.25}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;position:relative;z-index:1}
.mono{font-family:var(--font-mono)}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(10,11,16,.74);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(10,11,16,.97);box-shadow:0 10px 32px rgba(0,0,0,.5)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),#9a7cff);
  color:#fff;font-weight:800;font-size:17px;
  box-shadow:0 0 18px var(--c-primary-glow);
}
.brand-name{font-size:18px;font-weight:700;letter-spacing:-.5px}
.brand-name b{color:var(--c-accent);font-weight:800}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;padding:9px 12px;font-size:15px;color:var(--c-text-2);
  transition:color .18s ease;border-radius:8px;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--c-accent);box-shadow:0 0 10px var(--c-accent);
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav-links a:hover{color:var(--c-text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:#fff;text-shadow:0 0 12px rgba(44,232,192,.55)}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:42px;height:42px;border-radius:10px;display:grid;place-items:center;
  color:var(--c-text-2);border:1px solid var(--c-line);
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.icon-btn:hover{color:var(--c-accent);border-color:var(--c-line-strong);background:rgba(255,255,255,.05)}
.icon-btn:active{transform:scale(.96)}
.burger{display:none}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:700;
  border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  min-height:44px;
}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 24px rgba(111,75,255,.3)}
.btn-primary:hover{background:#7f5fff;transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-accent{background:var(--c-highlight);color:#0A0B10;box-shadow:0 8px 24px rgba(216,255,69,.18)}
.btn-accent:hover{background:#e4ff6b;transform:translateY(-2px);box-shadow:0 16px 40px rgba(216,255,69,.28)}
.btn-ghost{border-color:var(--c-line-strong);color:var(--c-text);background:transparent}
.btn-ghost:hover{border-color:var(--c-accent);color:var(--c-accent);background:rgba(44,232,192,.08);transform:translateY(-2px)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-accent);font-weight:600;font-size:15px}
.link-arrow svg{transition:transform .18s ease}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- Badges & chips ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;font-weight:700;line-height:1.6;
}
.badge-cyan{border:1px solid rgba(44,232,192,.5);color:var(--c-accent);background:rgba(44,232,192,.14)}
.badge-lemon{background:var(--c-highlight);color:#0A0B10}
.badge-plain{border:1px solid var(--c-line-strong);color:var(--c-text-2)}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  padding:8px 16px;border-radius:999px;font-size:14px;color:var(--c-text-2);
  border:1px solid var(--c-line);background:var(--c-surface);
  transition:color .18s ease,border-color .18s ease;
}
.chip:hover{color:var(--c-text);border-color:var(--c-line-strong)}
.chip.is-active{color:#0A0B10;background:var(--c-accent);border-color:var(--c-accent);font-weight:700;box-shadow:0 0 18px rgba(44,232,192,.35)}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;margin-top:72px;
  min-height:320px;display:flex;align-items:center;
  background-image:linear-gradient(90deg,rgba(10,11,16,.94) 0%,rgba(10,11,16,.78) 45%,rgba(10,11,16,.55) 100%),url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(111,75,255,.42),transparent 65%);
  pointer-events:none;
}
.page-hero .container{padding-top:64px;padding-bottom:64px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-2);margin-bottom:18px}
.breadcrumb a:hover{color:var(--c-accent)}
.breadcrumb .sep{color:var(--c-text-3)}
.breadcrumb .current{color:var(--c-accent);font-weight:600}
.page-hero h1{font-size:clamp(28px,4.2vw,48px);max-width:820px;margin-bottom:16px}
.page-hero .sub{max-width:720px;color:var(--c-text-2);font-size:17px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 22px;font-size:13px;color:var(--c-text-3)}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta i{width:6px;height:6px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 8px var(--c-accent);display:block}

/* ---------- Sections ---------- */
.section{padding:96px 0;position:relative}
.section-soft{background:var(--c-bg-soft);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{max-width:760px;margin-bottom:48px}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--c-accent);
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--c-accent);box-shadow:0 0 8px var(--c-accent)}
.section-head h2{font-size:clamp(26px,3vw,34px);margin:16px 0 14px}
.section-head p{color:var(--c-text-2);margin:0}

/* ---------- Value cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.vcard{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:30px 28px;box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.vcard:hover{transform:translateY(-4px);border-color:rgba(111,75,255,.7);box-shadow:var(--shadow-hover)}
.vcard .ico{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;margin-bottom:20px;
  background:rgba(111,75,255,.16);border:1px solid rgba(111,75,255,.45);color:var(--c-accent);
}
.vcard h3{font-size:20px;margin-bottom:10px}
.vcard p{color:var(--c-text-2);font-size:15px;margin:0}
.vcard .tagline{margin-top:18px;font-family:var(--font-mono);font-size:12px;color:var(--c-highlight);letter-spacing:.08em}

/* ---------- Timeline ---------- */
.timeline{position:relative;display:grid;gap:26px}
.timeline::before{
  content:"";position:absolute;left:31px;top:26px;bottom:26px;width:1px;
  background:linear-gradient(180deg,var(--c-accent),rgba(111,75,255,.55),rgba(255,255,255,.05));
}
.tl-item{position:relative;display:grid;grid-template-columns:64px minmax(0,1fr);gap:22px;align-items:start}
.tl-num{
  width:64px;height:64px;border-radius:18px;display:grid;place-items:center;
  background:var(--c-bg);border:1px solid var(--c-line-strong);
  font-family:var(--font-mono);font-size:18px;font-weight:700;color:var(--c-highlight);
  box-shadow:0 0 0 6px var(--c-bg);
}
.tl-body{
  display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:26px;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:26px 28px;box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.tl-body:hover{transform:translateY(-4px);border-color:rgba(111,75,255,.7);box-shadow:var(--shadow-hover)}
.tl-body h3{font-size:21px;margin-bottom:10px}
.tl-body p{color:var(--c-text-2);font-size:15px;margin:0}
.tl-body .stage{
  display:inline-block;font-family:var(--font-mono);font-size:12px;color:var(--c-accent);
  letter-spacing:.12em;margin-bottom:10px;
}
.tl-thumb{
  border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--c-line);
  aspect-ratio:16/9;background:var(--c-surface-2);
}
.tl-thumb img{width:100%;height:100%}

/* ---------- Scenario cards ---------- */
.scard{
  background:linear-gradient(180deg,var(--c-surface-2),var(--c-surface));
  border:1px solid var(--c-line);border-radius:var(--radius-card);padding:28px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.scard:hover{transform:translateY(-4px);border-color:rgba(44,232,192,.55);box-shadow:0 16px 40px rgba(44,232,192,.16)}
.scard .role{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.scard h3{font-size:19px}
.scard ul{display:grid;gap:10px;margin-top:14px}
.scard li{position:relative;padding-left:20px;color:var(--c-text-2);font-size:15px}
.scard li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:2px;background:var(--c-accent);box-shadow:0 0 8px var(--c-accent)}

/* ---------- Checklist ---------- */
.checklist{counter-reset:step;display:grid;gap:18px}
.check-item{
  display:grid;grid-template-columns:56px minmax(0,1fr);gap:20px;align-items:center;
  padding:22px 26px;border:1px solid var(--c-line-strong);border-radius:var(--radius-card);
  background:rgba(22,26,38,.6);
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.check-item:hover{border-color:rgba(44,232,192,.6);background:rgba(29,34,51,.85);transform:translateY(-3px)}
.check-item .no{
  font-family:var(--font-mono);font-size:20px;font-weight:700;color:var(--c-highlight);
  border-right:1px solid var(--c-line);padding-right:16px;text-align:center;
}
.check-item h3{font-size:18px;margin-bottom:6px}
.check-item p{color:var(--c-text-2);font-size:15px;margin:0}

/* ---------- Stats ---------- */
.stats-band{
  border:1px solid var(--c-line-strong);border-radius:24px;padding:48px 40px;
  background:linear-gradient(135deg,rgba(111,75,255,.14),rgba(10,11,16,.4) 55%);
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px;
}
.stat .num{font-family:var(--font-mono);font-size:34px;font-weight:700;color:var(--c-highlight);line-height:1.2}
.stat .lbl{margin-top:8px;font-size:14px;color:var(--c-text-2)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;transition:border-color .2s ease}
.faq-item[open]{border-color:rgba(111,75,255,.6);background:var(--c-surface-2)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:60px;padding:18px 24px;font-weight:700;font-size:16.5px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";flex:none;width:9px;height:9px;
  border-right:2px solid var(--c-accent);border-bottom:2px solid var(--c-accent);
  transform:rotate(-45deg);transition:transform .22s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-body{padding:0 24px 24px;color:var(--c-text-2);font-size:15.5px;border-top:1px solid var(--c-line);margin-top:-1px;padding-top:18px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;border-radius:24px;overflow:hidden;border:1px solid var(--c-line-strong);
  padding:64px 56px;
  background-image:linear-gradient(100deg,rgba(10,11,16,.94),rgba(10,11,16,.7)),url(/assets/images/backpic/back-3.png);
  background-size:cover;background-position:center;
}
.cta-band::after{
  content:"";position:absolute;left:-100px;bottom:-160px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(44,232,192,.28),transparent 68%);
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:40px;align-items:center}
.cta-band h2{font-size:clamp(24px,2.8vw,32px);margin-bottom:14px}
.cta-band p{color:var(--c-text-2);margin:0}
.sub-form{display:flex;gap:12px}
.sub-form input{
  flex:1;min-width:0;background:rgba(10,11,16,.75);border:1px solid var(--c-line-strong);
  border-radius:var(--radius-btn);padding:12px 16px;color:var(--c-text);min-height:44px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.sub-form input::placeholder{color:var(--c-text-3)}
.sub-form input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(44,232,192,.18)}
.form-note{margin-top:10px;font-size:13px;color:var(--c-text-3);min-height:20px}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--c-line);background:var(--c-bg-soft);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{color:var(--c-text-2);font-size:14.5px;margin:16px 0 0;max-width:320px}
.footer-col h4{font-size:15px;color:var(--c-text);margin-bottom:16px;letter-spacing:0}
.footer-col ul{display:grid;gap:11px}
.footer-col a{color:var(--c-text-2);font-size:14.5px;transition:color .18s ease}
.footer-col a:hover{color:var(--c-accent)}
.footer-contact{color:var(--c-text-2);font-size:14.5px;display:grid;gap:14px}
.footer-contact .k{color:var(--c-text-3);font-size:12.5px;font-family:var(--font-mono)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  color:var(--c-text-3);font-size:13px;
}
.to-top{
  border:1px solid var(--c-line-strong);border-radius:999px;padding:8px 18px;font-size:13px;color:var(--c-text-2);
  transition:color .18s ease,border-color .18s ease,transform .18s ease;
}
.to-top:hover{color:var(--c-accent);border-color:var(--c-accent);transform:translateY(-2px)}

/* ---------- Search panel & Drawer ---------- */
.search-panel{
  position:fixed;top:72px;left:0;right:0;z-index:55;
  background:rgba(10,11,16,.97);border-bottom:1px solid var(--c-line-strong);
  padding:22px 0;transform:translateY(-14px);opacity:0;visibility:hidden;
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.search-panel.is-open{transform:translateY(0);opacity:1;visibility:visible}
.search-inner{display:flex;gap:12px;max-width:760px}
.search-inner input{
  flex:1;min-width:0;background:var(--c-surface);border:1px solid var(--c-line-strong);border-radius:var(--radius-btn);
  padding:12px 16px;color:var(--c-text);min-height:44px;
}
.search-inner input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(44,232,192,.18)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(5,6,10,.7);backdrop-filter:blur(2px);
  z-index:80;opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:90;
  background:var(--c-bg-soft);border-left:1px solid var(--c-line-strong);
  padding:22px 22px 32px;display:flex;flex-direction:column;gap:8px;
  transform:translateX(102%);transition:transform .26s ease;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.drawer-group{font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--c-text-3);margin:16px 0 8px}
.drawer a.nav-item{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:10px;
  color:var(--c-text-2);border-left:3px solid transparent;font-size:15.5px;
}
.drawer a.nav-item:hover{background:rgba(255,255,255,.05);color:var(--c-text)}
.drawer a.nav-item.is-active{color:#fff;border-left-color:var(--c-accent);background:rgba(44,232,192,.08)}
.drawer .btn{margin-top:18px;width:100%}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .burger{display:grid}
  .grid-3,.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats-band{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .cta-inner{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}
  .tl-body{grid-template-columns:minmax(0,1fr)}
  .tl-thumb{max-width:420px}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .nav-wrap{height:64px}
  .nav-right .btn-accent{display:none}
  .page-hero{margin-top:64px;min-height:280px}
  .page-hero .container{padding-top:52px;padding-bottom:52px}
  .search-panel{top:64px}
  .cta-band{padding:44px 26px;border-radius:20px}
  .stats-band{padding:34px 24px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .stats-band{grid-template-columns:1fr;gap:22px}
  .footer-grid{grid-template-columns:1fr}
  .page-hero h1{font-size:28px}
  .tl-item{grid-template-columns:48px minmax(0,1fr);gap:14px}
  .tl-num{width:48px;height:48px;border-radius:14px;font-size:15px}
  .timeline::before{left:23px}
  .tl-body{padding:22px 20px}
  .check-item{grid-template-columns:44px minmax(0,1fr);padding:18px 18px}
  .sub-form{flex-direction:column}
  .sub-form .btn{width:100%}
  .hero-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --c-bg:#0A0B10;
  --c-bg-soft:#10131C;
  --c-surface:#161A26;
  --c-surface-2:#1D2233;
  --c-line:rgba(255,255,255,.08);
  --c-line-strong:rgba(255,255,255,.16);
  --c-primary:#6F4BFF;
  --c-primary-glow:rgba(111,75,255,.45);
  --c-accent:#2CE8C0;
  --c-highlight:#D8FF45;
  --c-text:#EDEFFA;
  --c-text-2:#A3ABC2;
  --c-text-3:#6E768C;
  --c-invert-bg:#F4F5F9;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px var(--c-primary-glow);
  --font-body:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding-top:68px;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.5px;line-height:1.3;color:#fff}
p{margin:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}

/* ---------- 顶栏 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;height:68px;
  display:flex;align-items:center;
  background:rgba(10,11,16,.74);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(10,11,16,.97);box-shadow:0 12px 32px rgba(0,0,0,.5)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),#9578ff);
  color:#fff;font-weight:800;font-size:16px;
  box-shadow:0 0 0 1px rgba(255,255,255,.08),0 6px 18px var(--c-primary-glow);
}
.brand-name{font-size:17px;font-weight:700;color:#fff;letter-spacing:-.4px}
.brand-name b{color:var(--c-accent);font-weight:800}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{
  position:relative;padding:10px 12px;font-size:15px;color:var(--c-text-2);
  border-radius:8px;transition:color .18s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--c-accent);box-shadow:0 0 10px var(--c-accent);
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav-links a:hover{color:var(--c-text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:#fff;text-shadow:0 0 14px rgba(44,232,192,.55)}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;border-radius:10px;
  background:rgba(255,255,255,.04);border:1px solid var(--c-line);
  color:var(--c-text-2);cursor:pointer;transition:all .2s ease;
}
.icon-btn:hover{color:var(--c-accent);border-color:rgba(44,232,192,.5);background:rgba(44,232,192,.08)}
.icon-btn:active{transform:scale(.96)}
.burger{display:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--radius-btn);font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;transition:all .2s ease;white-space:nowrap;
}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 22px rgba(111,75,255,.3)}
.btn-primary:hover{background:#7d5cff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-accent{background:var(--c-highlight);color:#0A0B10}
.btn-accent:hover{background:#e4ff6b;transform:translateY(-2px);box-shadow:0 14px 32px rgba(216,255,69,.25)}
.btn-ghost{background:transparent;border-color:var(--c-line-strong);color:var(--c-text)}
.btn-ghost:hover{border-color:var(--c-primary);background:rgba(111,75,255,.14)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-text-2);transition:color .2s ease}
.link-arrow span{transition:transform .2s ease}
.link-arrow:hover{color:var(--c-accent)}
.link-arrow:hover span{transform:translateX(4px)}
@media(max-width:1023px){
  .nav-links{display:none}
  .burger{display:grid}
  .nav-right .btn{display:none}
}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{position:fixed;inset:0;z-index:200;pointer-events:none}
.mobile-drawer .drawer-mask{position:absolute;inset:0;background:rgba(0,0,0,.62);opacity:0;transition:opacity .28s ease}
.mobile-drawer .drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:var(--c-bg-soft);border-left:1px solid var(--c-line);
  transform:translateX(102%);transition:transform .28s cubic-bezier(.4,0,.2,1);
  padding:20px;overflow-y:auto;
}
.mobile-drawer.is-open{pointer-events:auto}
.mobile-drawer.is-open .drawer-mask{opacity:1}
.mobile-drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-group{font-size:12px;letter-spacing:1px;color:var(--c-text-3);margin:18px 0 10px}
.drawer-link{
  display:flex;align-items:center;min-height:46px;padding:0 12px;
  border-radius:10px;color:var(--c-text-2);font-size:15px;
  border-left:3px solid transparent;transition:all .2s ease;
}
.drawer-link:hover{background:rgba(255,255,255,.04);color:#fff}
.drawer-link.is-active{color:#fff;background:rgba(44,232,192,.08);border-left-color:var(--c-accent)}

/* ---------- 搜索面板 ---------- */
.search-panel{
  position:fixed;left:0;right:0;top:68px;z-index:110;
  background:rgba(16,19,28,.98);border-bottom:1px solid var(--c-line);
  padding:18px 0;opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:all .25s ease;
}
.search-panel.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.search-form{display:flex;gap:10px}
.search-form input{
  flex:1;height:46px;padding:0 16px;border-radius:var(--radius-btn);
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-text);
  transition:border-color .2s ease;
}
.search-form input::placeholder{color:var(--c-text-3)}
.search-form input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(44,232,192,.14)}

/* ---------- 顶部区域 ---------- */
.page-top{
  position:relative;overflow:hidden;
  padding:36px 0 8px;
  border-bottom:1px solid var(--c-line);
}
.page-top::before{
  content:"";position:absolute;top:-160px;left:-80px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(111,75,255,.28),transparent 68%);
  pointer-events:none;
}
.page-top::after{
  content:"";position:absolute;top:-120px;right:-60px;width:360px;height:360px;
  background:radial-gradient(circle,rgba(44,232,192,.16),transparent 70%);
  pointer-events:none;
}
.page-top .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--c-text-2);padding:12px 0 20px}
.breadcrumb a{color:var(--c-text-2);transition:color .18s ease}
.breadcrumb a:hover{color:var(--c-accent)}
.breadcrumb .sep{color:var(--c-text-3)}
.breadcrumb .current{color:var(--c-accent);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头 ---------- */
.article-head{padding:8px 0 32px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.4px;
}
.badge-cyan{color:var(--c-accent);border:1px solid rgba(44,232,192,.42);background:rgba(44,232,192,.12)}
.badge-lemon{color:#0A0B10;background:var(--c-highlight)}
.article-head h1{font-size:28px;line-height:1.35;margin:16px 0 18px;max-width:22ch}
@media(min-width:768px){.article-head h1{font-size:38px;max-width:30ch}}
@media(min-width:1024px){.article-head h1{font-size:44px;max-width:26ch}}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--c-text-3);font-family:var(--font-mono)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--c-text-3)}
.article-cover{margin:28px 0 0;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--shadow-1)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- 布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:36px;padding:12px 0 0}
@media(min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:56px;align-items:start}
}
.article-main{min-width:0}
@media(min-width:1024px){.article-main{max-width:820px}}
.article-side{order:-1}
@media(min-width:1024px){.article-side{order:0;position:sticky;top:96px}}

/* ---------- 目录 ---------- */
.toc{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:18px 20px;
}
.toc-toggle{
  display:flex;width:100%;align-items:center;justify-content:space-between;gap:10px;
  background:none;border:0;color:#fff;font-size:15px;font-weight:700;cursor:pointer;padding:0;
}
.toc-toggle .mark{color:var(--c-accent);font-size:18px;line-height:1;transition:transform .2s ease}
.toc.is-open .toc-toggle .mark{transform:rotate(45deg)}
.toc-list{display:none;margin-top:14px;padding-top:14px;border-top:1px solid var(--c-line);max-height:52vh;overflow-y:auto}
.toc.is-open .toc-list{display:block}
.toc a{
  display:block;font-size:13.5px;color:var(--c-text-2);padding:7px 0 7px 12px;
  border-left:2px solid transparent;transition:all .2s ease;
}
.toc a.toc-sub{padding-left:24px;font-size:13px;color:var(--c-text-3)}
.toc a:hover{color:#fff}
.toc a.is-current{color:var(--c-accent);border-left-color:var(--c-accent);background:rgba(44,232,192,.06)}
@media(min-width:1024px){
  .toc-list{display:block}
  .toc-toggle{cursor:default;pointer-events:none}
  .toc-toggle .mark{display:none}
}

/* ---------- 正文排版 ---------- */
.article-body{font-size:17px;line-height:1.9;color:#DCE0EE;word-break:break-word}
.article-body p{margin:0 0 1.2em}
.article-body h1,.article-body h2,.article-body h3,.article-body h4{scroll-margin-top:96px}
.article-body h2{
  position:relative;font-size:24px;line-height:1.45;margin:48px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:2px;
  background:var(--c-accent);box-shadow:0 0 12px var(--c-accent);
}
.article-body h3{font-size:20px;margin:34px 0 12px;color:#fff}
.article-body h4{font-size:17px;margin:24px 0 10px;color:#fff}
.article-body ul{margin:0 0 1.3em}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:9px}
.article-body ul li::before{
  content:"";position:absolute;left:5px;top:.72em;width:6px;height:6px;border-radius:1px;
  background:var(--c-accent);transform:rotate(45deg);
}
.article-body ol{counter-reset:li;margin:0 0 1.3em}
.article-body ol li{position:relative;counter-increment:li;padding-left:34px;margin-bottom:9px}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);position:absolute;left:0;top:.16em;
  font-family:var(--font-mono);font-size:13px;color:var(--c-highlight);letter-spacing:0;
}
.article-body img{border-radius:12px;margin:24px 0;width:100%;height:auto;background:var(--c-surface);border:1px solid var(--c-line)}
.article-body figure{margin:24px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--c-text-3);margin-top:10px}
.article-body blockquote{
  margin:26px 0;padding:16px 20px;background:var(--c-surface);color:var(--c-text-2);
  border-left:3px solid var(--c-primary);border-radius:0 12px 12px 0;
  box-shadow:inset 0 0 0 1px var(--c-line);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--c-accent);border-bottom:1px solid transparent;transition:border-color .2s ease}
.article-body a:hover{border-bottom-color:var(--c-accent)}
.article-body strong{color:#fff;font-weight:700}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--c-line-strong);padding:10px 14px;text-align:left}
.article-body th{background:var(--c-surface-2);color:#fff;font-weight:700;white-space:nowrap}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.03)}
.article-body code{
  font-family:var(--font-mono);font-size:14px;background:var(--c-surface-2);
  padding:2px 6px;border-radius:6px;color:var(--c-highlight);
}
.article-body hr{border:0;height:1px;background:var(--c-line);margin:36px 0}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--c-line-strong);
  border-radius:var(--radius-card);background:var(--c-surface);
}
.empty-state .mark{
  width:56px;height:56px;margin:0 auto 18px;border-radius:14px;display:grid;place-items:center;
  border:1px solid var(--c-line-strong);color:var(--c-text-3);font-size:22px;font-family:var(--font-mono);
}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--c-text-2);font-size:15px;margin-bottom:22px}

/* ---------- 文末标签与分享 ---------- */
.article-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:44px;padding-top:24px;border-top:1px solid var(--c-line);
}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  padding:5px 12px;border-radius:999px;font-size:12.5px;color:var(--c-text-2);
  background:rgba(255,255,255,.04);border:1px solid var(--c-line);transition:all .2s ease;
}
.tag:hover{color:var(--c-accent);border-color:rgba(44,232,192,.45)}
.share{display:flex;align-items:center;gap:8px}
.share span.k{font-size:13px;color:var(--c-text-3);margin-right:4px}

/* ---------- 相关栏目卡 ---------- */
.section{padding:64px 0}
@media(min-width:1024px){.section{padding:88px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:32px}
.section-head h2{font-size:26px}
.section-head p{color:var(--c-text-2);font-size:15px;margin-top:8px;max-width:60ch}
.grid-3{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:768px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.grid-3{grid-template-columns:repeat(3,1fr)}}
.card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(111,75,255,.65);box-shadow:var(--shadow-2)}
.card-media{position:relative;overflow:hidden;background:var(--c-surface-2)}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-media::after{content:"";position:absolute;inset:auto 0 0 0;height:56%;background:linear-gradient(transparent,rgba(10,11,16,.86))}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14px;line-height:1.75;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--c-text-3);font-family:var(--font-mono)}

/* ---------- 继续阅读 ---------- */
.next-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.next-grid{grid-template-columns:repeat(2,1fr)}}
.next-card{
  display:block;padding:22px 24px;border:1px solid var(--c-line);border-radius:var(--radius-card);
  background:var(--c-surface);transition:all .22s ease;
}
.next-card:hover{border-color:rgba(111,75,255,.65);transform:translateY(-3px);box-shadow:0 16px 36px rgba(0,0,0,.4)}
.next-card .k{font-size:12px;letter-spacing:1px;color:var(--c-highlight);font-family:var(--font-mono)}
.next-card h3{font-size:17px;margin:8px 0 6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.next-card p{font-size:14px;color:var(--c-text-2);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:860px}
.faq-item{
  border:1px solid var(--c-line);border-radius:14px;background:var(--c-surface);
  overflow:hidden;transition:border-color .2s ease;
}
.faq-item[open]{border-color:rgba(44,232,192,.45);background:var(--c-surface-2)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:58px;padding:14px 20px;font-size:16px;font-weight:700;color:#fff;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"›";font-size:22px;line-height:1;color:var(--c-accent);transform:rotate(90deg);
  transition:transform .22s ease;flex-shrink:0;
}
.faq-item[open] summary::after{transform:rotate(270deg)}
.faq-item .answer{padding:0 20px 20px;color:var(--c-text-2);font-size:15px;line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--c-bg-soft) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding:72px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(10,11,16,.95) 10%,rgba(16,19,28,.88) 55%,rgba(111,75,255,.28));
}
.cta-band .container{position:relative;z-index:2}
.cta-box{max-width:680px}
.cta-box h2{font-size:26px;margin-bottom:14px}
@media(min-width:1024px){.cta-box h2{font-size:32px}}
.cta-box p{color:#C9CFE4;font-size:15.5px;line-height:1.85;margin-bottom:26px}
.subscribe{display:flex;flex-direction:column;gap:12px}
@media(min-width:768px){.subscribe{flex-direction:row;align-items:center}}
.subscribe input{
  flex:1;height:48px;padding:0 16px;border-radius:var(--radius-btn);
  background:rgba(10,11,16,.7);border:1px solid var(--c-line-strong);color:var(--c-text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.subscribe input::placeholder{color:var(--c-text-3)}
.subscribe input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(44,232,192,.16)}
.subscribe .btn{width:100%}
@media(min-width:768px){.subscribe .btn{width:auto;height:48px;padding:0 26px}}
.form-note{margin-top:12px;font-size:13px;color:var(--c-text-3)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg-soft);border-top:1px solid var(--c-line);padding:64px 0 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand p{color:var(--c-text-2);font-size:14px;line-height:1.8;margin-top:14px;max-width:38ch}
.footer-col h4{font-size:14px;letter-spacing:.5px;margin-bottom:14px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:var(--c-text-2);font-size:14px;transition:color .18s ease}
.footer-col a:hover{color:var(--c-accent)}
.footer-contact{color:var(--c-text-2);font-size:14px;line-height:1.9;display:grid;gap:12px}
.footer-contact .k{color:var(--c-text-3);font-size:12px;letter-spacing:.5px}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  color:var(--c-text-3);font-size:13px;
}
.to-top{
  background:transparent;border:1px solid var(--c-line-strong);color:var(--c-text-2);
  border-radius:999px;padding:8px 18px;font-size:13px;cursor:pointer;transition:all .2s ease;
}
.to-top:hover{border-color:var(--c-accent);color:var(--c-accent);background:rgba(44,232,192,.08)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --c-bg:#0A0B10;
  --c-bg-soft:#10131C;
  --c-surface:#161A26;
  --c-surface-2:#1D2233;
  --c-line:rgba(255,255,255,.08);
  --c-line-strong:rgba(255,255,255,.16);
  --c-primary:#6F4BFF;
  --c-primary-glow:rgba(111,75,255,.45);
  --c-accent:#2CE8C0;
  --c-highlight:#D8FF45;
  --c-text:#EDEFFA;
  --c-text-2:#A3ABC2;
  --c-text-3:#6E768C;
  --c-invert-bg:#F4F5F9;
  --r-card:16px;
  --r-btn:10px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.5px;line-height:1.28}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.divider{height:1px;background:var(--c-line);border:0;margin:0}

/* ---------- 顶栏 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(10,11,16,.74);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--c-line);transition:background .25s,box-shadow .25s}
.site-header.is-scrolled{background:#0A0B10;box-shadow:0 10px 30px rgba(0,0,0,.5)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-text)}
.brand-mark{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:16px;color:#fff;background:linear-gradient(135deg,var(--c-primary),#9a7bff);box-shadow:0 0 18px var(--c-primary-glow)}
.brand-name{font-size:18px;font-weight:700;letter-spacing:-.4px}
.brand-name b{color:var(--c-accent);font-weight:700}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;padding:9px 12px;font-size:15px;color:var(--c-text-2);border-radius:8px;transition:color .18s,background .18s}
.nav-links a::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--c-accent);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .18s ease}
.nav-links a:hover{color:var(--c-text);background:rgba(255,255,255,.04)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--c-text);text-shadow:0 0 12px rgba(44,232,192,.5)}
.nav-links a.is-active::after{transform:scaleX(1);box-shadow:0 0 10px var(--c-accent)}
.nav-right{display:flex;align-items:center;gap:10px}
.icon-btn{width:40px;height:40px;display:grid;place-items:center;border-radius:10px;border:1px solid var(--c-line);background:transparent;color:var(--c-text-2);cursor:pointer;transition:.18s}
.icon-btn:hover{color:var(--c-accent);border-color:var(--c-accent);background:rgba(44,232,192,.08)}
.icon-btn:active{transform:scale(.96)}
.burger{display:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .18s,box-shadow .18s,background .18s,border-color .18s,color .18s}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 24px rgba(0,0,0,.35)}
.btn-primary:hover{background:#7d5cff;transform:translateY(-2px);box-shadow:0 16px 40px var(--c-primary-glow)}
.btn-ghost{background:transparent;color:var(--c-text);border-color:var(--c-line-strong)}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--c-accent);color:var(--c-accent)}
.btn-accent{background:var(--c-highlight);color:#0A0B10}
.btn-accent:hover{background:#e6ff7a;transform:translateY(-2px);box-shadow:0 14px 34px rgba(216,255,69,.22)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.nav-mask{position:fixed;inset:0;background:rgba(5,6,10,.6);opacity:0;pointer-events:none;transition:opacity .25s;z-index:65}
.nav-mask.is-open{opacity:1;pointer-events:auto}
.search-panel{overflow:hidden;max-height:0;transition:max-height .28s ease;background:var(--c-bg-soft);border-bottom:1px solid var(--c-line)}
.search-panel.is-open{max-height:120px}
.search-inner{display:flex;gap:12px;padding:16px 0;align-items:center}
.search-inner input{flex:1;height:46px;border-radius:var(--r-btn);background:rgba(10,11,16,.7);border:1px solid var(--c-line-strong);color:var(--c-text);padding:0 16px}
.search-inner input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(44,232,192,.18)}

/* ---------- 内页横幅 ---------- */
.page-hero{position:relative;padding:60px 0 56px;background:url(/assets/images/backpic/back-2.webp) center/cover no-repeat;border-bottom:1px solid var(--c-line);overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(10,11,16,.96) 0%,rgba(10,11,16,.86) 52%,rgba(10,11,16,.7) 100%)}
.page-hero .glow-a{position:absolute;width:420px;height:420px;right:-80px;top:-160px;background:radial-gradient(circle,rgba(111,75,255,.42),transparent 68%);filter:blur(6px)}
.page-hero .glow-b{position:absolute;width:300px;height:300px;left:-60px;bottom:-160px;background:radial-gradient(circle,rgba(44,232,192,.24),transparent 70%)}
.page-hero .container{position:relative;z-index:2}
.crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--c-text-2);margin-bottom:22px}
.crumbs a{color:var(--c-text-2);transition:color .18s}
.crumbs a:hover{color:var(--c-accent)}
.crumbs .sep{color:var(--c-text-3)}
.crumbs .current{color:var(--c-accent)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.1em;color:var(--c-accent);font-family:var(--mono);text-transform:uppercase;margin-bottom:16px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--c-accent);box-shadow:0 0 8px var(--c-accent)}
h1.page-title{font-size:46px;line-height:1.2;max-width:820px;margin-bottom:18px}
.page-lead{max-width:700px;color:var(--c-text-2);font-size:17px;line-height:1.8;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 通用板块头 ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.sec-title{font-size:31px;letter-spacing:-.6px}
.sec-sub{color:var(--c-text-2);font-size:15px;line-height:1.75;margin-top:12px;max-width:660px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-accent);font-weight:600}
.link-arrow span{transition:transform .18s}
.link-arrow:hover span{transform:translateX(4px)}

/* ---------- 数据条 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;transition:border-color .2s,transform .2s}
.stat:hover{border-color:var(--c-primary);transform:translateY(-3px)}
.stat-num{font-family:var(--mono);font-size:32px;font-weight:700;color:var(--c-highlight);line-height:1.2}
.stat-label{color:var(--c-text-2);font-size:14px;margin-top:6px}
.stat-note{color:var(--c-text-3);font-size:13px;margin-top:10px;font-family:var(--mono)}

/* ---------- 筛选条 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.filter-bar a{padding:9px 18px;border-radius:999px;border:1px solid var(--c-line);color:var(--c-text-2);font-size:14px;transition:.18s}
.filter-bar a:hover{color:var(--c-text);border-color:var(--c-line-strong)}
.filter-bar a.is-active{background:rgba(44,232,192,.12);border-color:var(--c-accent);color:var(--c-accent)}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .22s,border-color .22s,box-shadow .22s}
.card:hover{transform:translateY(-4px);border-color:var(--c-primary);box-shadow:0 16px 40px var(--c-primary-glow)}
.card-media{position:relative;aspect-ratio:16/9;background:var(--c-surface-2);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-media::after{content:"";position:absolute;left:0;right:0;bottom:0;height:52%;background:linear-gradient(to top,rgba(10,11,16,.88),transparent)}
.card-media .tag-on-img{position:absolute;left:14px;bottom:14px;z-index:2}
.card-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-title{font-size:18px;letter-spacing:-.3px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{font-size:14px;color:var(--c-text-2);line-height:1.72;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-text-3);font-family:var(--mono);flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;line-height:1.6;font-weight:600}
.badge-cyan{color:var(--c-accent);border:1px solid rgba(44,232,192,.55);background:rgba(44,232,192,.14)}
.badge-lemon{color:#0A0B10;background:var(--c-highlight)}
.badge-quiet{color:var(--c-text-2);border:1px solid var(--c-line-strong);background:rgba(255,255,255,.04)}

/* ---------- 分页 ---------- */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:46px;flex-wrap:wrap}
.pagination a,.pagination span{min-width:42px;height:42px;padding:0 14px;display:grid;place-items:center;border-radius:var(--r-btn);border:1px solid var(--c-line);color:var(--c-text-2);font-size:14px;font-family:var(--mono);transition:.18s}
.pagination a:hover{border-color:var(--c-accent);color:var(--c-accent)}
.pagination .is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.pagination .is-disabled{opacity:.45;cursor:not-allowed}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{position:relative;background:var(--c-bg-soft);border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px 24px;transition:border-color .2s,transform .2s}
.step:hover{border-color:var(--c-primary);transform:translateY(-3px)}
.step::before{content:"";position:absolute;left:24px;top:60px;right:24px;height:1px;background:var(--c-line)}
.step-num{font-family:var(--mono);font-size:13px;letter-spacing:.12em;color:var(--c-highlight)}
.step h3{font-size:19px;margin:14px 0 10px;position:relative;z-index:2}
.step p{color:var(--c-text-2);font-size:14px;line-height:1.75}

/* ---------- 图文分栏 + 清单 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.figure{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--shadow-card)}
.figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.check-list{display:flex;flex-direction:column;gap:14px;margin-top:26px}
.check-list li{display:flex;gap:14px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:14px;padding:16px 18px;transition:border-color .2s}
.check-list li:hover{border-color:var(--c-primary)}
.check-mark{flex:0 0 auto;width:24px;height:24px;border-radius:8px;display:grid;place-items:center;font-size:12px;color:var(--c-accent);background:rgba(44,232,192,.14);border:1px solid rgba(44,232,192,.5);font-family:var(--mono)}
.check-list b{display:block;font-size:16px;margin-bottom:4px}
.check-list span{color:var(--c-text-2);font-size:14px;line-height:1.72}

/* ---------- 反白断点区块 ---------- */
.trust{background:var(--c-invert-bg);border-radius:20px;padding:52px 48px;color:#12141C}
.trust h2{font-size:29px;color:#12141C;letter-spacing:-.6px}
.trust .sec-sub{color:#4C5266}
.trust-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin:34px 0 40px}
.trust-metric{border-left:3px solid var(--c-primary);padding-left:16px}
.trust-metric .n{font-family:var(--mono);font-size:28px;font-weight:700;color:#12141C}
.trust-metric .l{font-size:14px;color:#525A70;margin-top:4px}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.quote{background:#fff;border:1px solid rgba(18,20,28,.08);border-radius:14px;padding:22px;box-shadow:0 6px 18px rgba(18,20,28,.06)}
.quote .stars{color:#F2A93B;font-size:13px;letter-spacing:2px;margin-bottom:10px}
.quote p{font-size:14px;line-height:1.75;color:#3A4152}
.quote .who{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:13px;color:#6A7186}
.avatar{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--c-primary),var(--c-accent));display:grid;place-items:center;color:#fff;font-size:13px;font-weight:700}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:14px;overflow:hidden;transition:border-color .2s}
.faq-item:hover{border-color:var(--c-line-strong)}
.faq-item[open]{background:var(--c-bg-soft);border-color:rgba(44,232,192,.4)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 24px;min-height:60px;font-size:16px;font-weight:700;cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";flex:0 0 auto;width:8px;height:8px;border-right:2px solid var(--c-accent);border-bottom:2px solid var(--c-accent);transform:rotate(45deg);transition:transform .2s}
.faq-item[open] summary::after{transform:rotate(225deg)}
.faq-item[open] summary{color:var(--c-accent)}
.faq-body{padding:0 24px 22px;color:var(--c-text-2);font-size:15px;line-height:1.85}

/* ---------- CTA ---------- */
.cta{position:relative;border-radius:20px;overflow:hidden;padding:56px}
.cta-bg{position:absolute;inset:0;background:url(/assets/images/backpic/back-3.png) center/cover no-repeat}
.cta-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,11,16,.95),rgba(10,11,16,.72))}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta h2{font-size:30px;margin-bottom:12px}
.cta p{color:var(--c-text-2);font-size:15px;max-width:520px}
.subscribe{display:flex;gap:10px;flex-wrap:wrap}
.subscribe input{height:48px;min-width:280px;border-radius:var(--r-btn);background:rgba(10,11,16,.65);border:1px solid var(--c-line-strong);color:var(--c-text);padding:0 16px}
.subscribe input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(44,232,192,.18)}
.form-note{font-size:13px;color:var(--c-text-3);margin-top:10px;font-family:var(--mono)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg-soft);border-top:1px solid var(--c-line);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{color:var(--c-text-2);font-size:14px;line-height:1.78;margin-top:16px;max-width:340px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--c-text)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:var(--c-text-2);font-size:14px;transition:color .18s}
.footer-col a:hover{color:var(--c-accent)}
.footer-contact{color:var(--c-text-2);font-size:14px;line-height:1.85;display:flex;flex-direction:column;gap:12px}
.footer-contact .k{color:var(--c-text)}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--c-text-3);font-size:13px}
.to-top{background:transparent;border:1px solid var(--c-line-strong);color:var(--c-text-2);border-radius:999px;padding:8px 18px;font-size:13px;cursor:pointer;transition:.18s}
.to-top:hover{border-color:var(--c-accent);color:var(--c-accent)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  h1.page-title{font-size:36px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:32px}
  .trust-metrics{grid-template-columns:repeat(2,1fr)}
  .quote-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-links{position:fixed;top:0;right:0;height:100vh;width:290px;flex-direction:column;align-items:stretch;gap:6px;padding:88px 20px 32px;background:var(--c-bg-soft);border-left:1px solid var(--c-line);transform:translateX(102%);transition:transform .28s ease;z-index:70;overflow-y:auto}
  .nav-links.is-open{transform:none}
  .nav-links a{padding:14px 14px 14px 18px;font-size:16px;border-radius:10px}
  .nav-links a::after{left:0;right:auto;top:12px;bottom:12px;width:3px;height:auto;transform:scaleY(0);transform-origin:top}
  .nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleY(1)}
  .nav-links a.is-active{background:rgba(44,232,192,.08)}
  .burger{display:grid}
}
@media (max-width:768px){
  .section{padding:60px 0}
  .section-tight{padding:52px 0}
  h1.page-title{font-size:30px}
  .page-lead{font-size:16px}
  .sec-title{font-size:25px}
  .card-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr 1fr}
  .trust{padding:34px 22px}
  .cta{padding:36px 22px}
  .cta h2{font-size:24px}
  .subscribe input{min-width:0;width:100%}
  .subscribe{width:100%}
  .subscribe .btn{width:100%}
  .hero-actions .btn{width:100%}
}
@media (max-width:520px){
  .container{padding:0 16px}
  h1.page-title{font-size:27px}
  .stat-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .nav-right .btn{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
    --c-bg:#0A0B10;
    --c-bg-soft:#10131C;
    --c-surface:#161A26;
    --c-surface-2:#1D2233;
    --c-line:rgba(255,255,255,.08);
    --c-line-strong:rgba(255,255,255,.16);
    --c-primary:#6F4BFF;
    --c-primary-glow:rgba(111,75,255,.45);
    --c-accent:#2CE8C0;
    --c-highlight:#D8FF45;
    --c-text:#EDEFFA;
    --c-text-2:#A3ABC2;
    --c-text-3:#6E768C;
    --c-invert-bg:#F4F5F9;
    --r-card:16px;
    --r-img:14px;
    --r-btn:10px;
    --shadow-1:0 8px 24px rgba(0,0,0,.35);
    --shadow-2:0 16px 40px var(--c-primary-glow);
    --container:1200px;
    --mono:ui-monospace,"JetBrains Mono",SFMono-Regular,Menlo,Consolas,monospace;
    --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;background:var(--c-bg);color:var(--c-text);
    font-family:var(--sans);font-size:16px;line-height:1.75;
    letter-spacing:.1px;
    background-image:linear-gradient(rgba(255,255,255,.024) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.024) 1px,transparent 1px);
    background-size:64px 64px,64px 64px;
  }
  img{max-width:100%;display:block;object-fit:cover;}
  a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  h1,h2,h3,h4{font-weight:800;letter-spacing:-.5px;line-height:1.28;color:var(--c-text);}
  button,input{font-family:inherit;font-size:inherit;}
  :focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
  ::selection{background:var(--c-primary);color:#fff;}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
  .section{padding:96px 0;}
  .section-soft{background:var(--c-bg-soft);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;
    letter-spacing:.16em;text-transform:uppercase;color:var(--c-accent);
  }
  .eyebrow::before{content:"";width:20px;height:1px;background:var(--c-accent);display:block;}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
  .section-head h2{font-size:32px;margin-top:12px;}
  .section-head p{color:var(--c-text-2);max-width:640px;margin-top:10px;font-size:15px;}
  .link-more{
    display:inline-flex;align-items:center;gap:6px;color:var(--c-text-2);font-size:14px;font-weight:600;
  }
  .link-more svg{transition:transform .18s ease;}
  .link-more:hover{color:var(--c-accent);}
  .link-more:hover svg{transform:translateX(4px);}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:120;width:100%;
    background:rgba(10,11,16,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--c-line);transition:background-color .22s ease,box-shadow .22s ease;
  }
  .site-header.is-scrolled{background:#0A0B10;box-shadow:0 10px 30px rgba(0,0,0,.5);}
  .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:70px;}
  .brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;}
  .brand-mark{
    width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:16px;
    color:#fff;background:linear-gradient(140deg,var(--c-primary),#3B27A8);
    box-shadow:0 6px 18px var(--c-primary-glow);
  }
  .brand-name{font-size:18px;font-weight:800;letter-spacing:-.4px;color:var(--c-text);}
  .brand-name b{color:var(--c-accent);font-weight:800;}
  .nav-links{display:flex;align-items:center;gap:6px;}
  .nav-links a{
    position:relative;display:inline-flex;align-items:center;height:70px;padding:0 14px;
    font-size:15px;color:var(--c-text-2);font-weight:600;
  }
  .nav-links a::after{
    content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;width:0;
    background:linear-gradient(90deg,var(--c-accent),var(--c-primary));transition:width .18s ease;
  }
  .nav-links a:hover{color:var(--c-text);}
  .nav-links a:hover::after{width:calc(100% - 28px);}
  .nav-links a.is-active{color:var(--c-text);text-shadow:0 0 14px rgba(44,232,192,.45);}
  .nav-links a.is-active::after{width:calc(100% - 28px);}
  .nav-right{display:flex;align-items:center;gap:10px;}
  .icon-btn{
    width:42px;height:42px;display:grid;place-items:center;border-radius:10px;
    background:transparent;border:1px solid var(--c-line-strong);color:var(--c-text-2);cursor:pointer;
    transition:all .18s ease;
  }
  .icon-btn:hover{color:var(--c-text);border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(44,232,192,.08);}
  .icon-btn:active{transform:scale(.96);}
  .burger{display:none;}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;
    border-radius:var(--r-btn);font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;
    transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
    white-space:nowrap;
  }
  .btn:active{transform:scale(.98);}
  .btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(111,75,255,.35);}
  .btn-primary:hover{background:#7F5DFF;transform:translateY(-2px);box-shadow:var(--shadow-2);}
  .btn-accent{background:var(--c-highlight);color:#14170A;}
  .btn-accent:hover{background:#E4FF66;transform:translateY(-2px);box-shadow:0 14px 34px rgba(216,255,69,.22);}
  .btn-ghost{background:transparent;border-color:var(--c-line-strong);color:var(--c-text);}
  .btn-ghost:hover{border-color:var(--c-accent);background:rgba(44,232,192,.08);transform:translateY(-2px);}
  .btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

  /* search panel */
  .search-panel{
    position:absolute;left:0;right:0;top:100%;background:#0D1017;border-bottom:1px solid var(--c-line);
    box-shadow:0 24px 50px rgba(0,0,0,.55);padding:22px 0;display:none;
  }
  .search-panel.is-open{display:block;}
  .search-form{display:flex;gap:12px;align-items:center;}
  .search-form input{
    flex:1;height:48px;padding:0 16px;border-radius:var(--r-btn);background:var(--c-surface);
    border:1px solid var(--c-line-strong);color:var(--c-text);transition:border-color .18s ease,box-shadow .18s ease;
  }
  .search-form input::placeholder{color:var(--c-text-3);}
  .search-form input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(44,232,192,.12);}
  .search-hint{margin-top:10px;font-size:13px;color:var(--c-text-3);}

  /* mobile drawer */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(4,5,9,.7);opacity:0;pointer-events:none;
    transition:opacity .22s ease;z-index:200;
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto;}
  .drawer{
    position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);background:#0D1017;
    border-left:1px solid var(--c-line);z-index:210;padding:20px 20px 32px;overflow-y:auto;
    transform:translateX(102%);transition:transform .26s ease;
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
  .drawer-title{font-size:13px;color:var(--c-text-3);letter-spacing:.14em;font-family:var(--mono);text-transform:uppercase;}
  .drawer nav a{
    display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:10px;
    color:var(--c-text-2);font-weight:600;border-left:3px solid transparent;
  }
  .drawer nav a:hover{background:var(--c-surface);color:var(--c-text);}
  .drawer nav a.is-active{color:var(--c-text);border-left-color:var(--c-accent);background:var(--c-surface);}
  .drawer .btn{width:100%;margin-top:18px;}

  /* ---------- hero banner ---------- */
  .page-hero{
    position:relative;overflow:hidden;min-height:320px;display:flex;align-items:flex-end;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
    border-bottom:1px solid var(--c-line);
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(10,11,16,.86) 0%,rgba(10,11,16,.72) 45%,rgba(10,11,16,.96) 100%);
  }
  .page-hero::after{
    content:"";position:absolute;width:520px;height:520px;right:-120px;top:-220px;border-radius:50%;
    background:radial-gradient(circle,rgba(111,75,255,.35),transparent 70%);pointer-events:none;
  }
  .page-hero .container{position:relative;z-index:2;padding-top:64px;padding-bottom:44px;}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-2);margin-bottom:18px;}
  .breadcrumb a:hover{color:var(--c-accent);}
  .breadcrumb span.sep{color:var(--c-text-3);}
  .breadcrumb .current{color:var(--c-highlight);font-weight:600;}
  .page-hero h1{font-size:44px;max-width:900px;}
  .page-hero h1 em{font-style:normal;color:var(--c-accent);}
  .page-hero .lead{margin-top:16px;max-width:760px;color:var(--c-text-2);font-size:16.5px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
  .tag{
    display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;font-size:12.5px;
    color:var(--c-accent);border:1px solid rgba(44,232,192,.4);background:rgba(44,232,192,.1);font-weight:600;
  }
  .tag-solid{background:var(--c-highlight);color:#151803;border-color:transparent;}

  /* ---------- stat strip ---------- */
  .stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
  .stat-card{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:24px;box-shadow:var(--shadow-1);transition:border-color .2s ease,transform .2s ease;
  }
  .stat-card:hover{border-color:rgba(111,75,255,.6);transform:translateY(-4px);}
  .stat-num{font-family:var(--mono);font-size:30px;font-weight:700;color:var(--c-highlight);letter-spacing:-1px;}
  .stat-label{margin-top:6px;font-size:14px;color:var(--c-text-2);}

  /* ---------- timeline ---------- */
  .timeline{position:relative;margin-top:12px;}
  .timeline::before{
    content:"";position:absolute;left:29px;top:12px;bottom:12px;width:1px;
    background:linear-gradient(180deg,rgba(44,232,192,.6),rgba(111,75,255,.45),rgba(255,255,255,.06));
  }
  .tl-item{position:relative;display:grid;grid-template-columns:60px 1fr;gap:26px;padding-bottom:44px;}
  .tl-item:last-child{padding-bottom:0;}
  .tl-num{
    position:relative;z-index:2;width:60px;height:60px;border-radius:14px;display:grid;place-items:center;
    font-family:var(--mono);font-size:19px;font-weight:700;color:var(--c-highlight);
    background:var(--c-bg-soft);border:1px solid var(--c-line-strong);
    box-shadow:0 0 0 6px rgba(10,11,16,1);
  }
  .tl-item:hover .tl-num{border-color:var(--c-highlight);box-shadow:0 0 0 6px rgba(10,11,16,1),0 0 24px rgba(216,255,69,.22);}
  .tl-body{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:24px;display:grid;grid-template-columns:1fr 220px;gap:24px;align-items:center;
    transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  }
  .tl-body:hover{border-color:rgba(111,75,255,.65);transform:translateY(-4px);box-shadow:var(--shadow-2);}
  .tl-body h3{font-size:21px;margin-bottom:10px;}
  .tl-body p{color:var(--c-text-2);font-size:15px;}
  .tl-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
  .chip{
    font-family:var(--mono);font-size:12px;color:var(--c-text-2);border:1px solid var(--c-line-strong);
    padding:3px 10px;border-radius:999px;
  }
  .tl-thumb{
    border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);aspect-ratio:16/9;
    background:var(--c-surface-2);
  }
  .tl-thumb img{width:100%;height:100%;}

  /* ---------- update type cards ---------- */
  .type-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .type-card{
    background:linear-gradient(180deg,var(--c-surface-2),var(--c-surface));
    border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px;
    transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .type-card:hover{transform:translateY(-4px);border-color:rgba(111,75,255,.65);box-shadow:var(--shadow-2);}
  .type-icon{
    width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:18px;
    background:rgba(44,232,192,.12);border:1px solid rgba(44,232,192,.35);color:var(--c-accent);
  }
  .type-card h3{font-size:19px;margin-bottom:10px;}
  .type-card p{color:var(--c-text-2);font-size:14.5px;}

  /* ---------- schedule table ---------- */
  .table-wrap{
    border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;background:var(--c-surface);
  }
  table.schedule{width:100%;border-collapse:collapse;font-size:15px;}
  table.schedule caption{
    caption-side:top;text-align:left;padding:20px 24px;color:var(--c-text-2);font-size:14px;
    border-bottom:1px solid var(--c-line);
  }
  table.schedule th{
    text-align:left;padding:14px 24px;font-family:var(--mono);font-size:12.5px;letter-spacing:.1em;
    text-transform:uppercase;color:var(--c-text-3);background:rgba(255,255,255,.02);border-bottom:1px solid var(--c-line);
  }
  table.schedule td{padding:16px 24px;border-bottom:1px solid var(--c-line);color:var(--c-text-2);vertical-align:top;}
  table.schedule tbody tr:nth-child(even){background:rgba(255,255,255,.015);}
  table.schedule tbody tr:hover{background:rgba(111,75,255,.09);}
  table.schedule td:first-child{color:var(--c-text);font-weight:700;}
  table.schedule tr:last-child td{border-bottom:none;}

  /* ---------- checklist ---------- */
  .split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
  .split h2{font-size:32px;margin-top:12px;}
  .split p{color:var(--c-text-2);margin-top:14px;}
  .check-list{margin-top:26px;display:grid;gap:14px;}
  .check-list li{
    display:flex;gap:12px;align-items:flex-start;background:var(--c-surface);border:1px solid var(--c-line);
    border-radius:12px;padding:14px 18px;color:var(--c-text-2);font-size:15px;
    transition:border-color .2s ease,transform .2s ease;
  }
  .check-list li:hover{border-color:rgba(44,232,192,.5);transform:translateX(4px);}
  .check-list li::before{
    content:"";flex:0 0 auto;width:18px;height:18px;margin-top:4px;border-radius:5px;
    border:1px solid var(--c-accent);background:
      linear-gradient(45deg,transparent 42%,var(--c-accent) 42%,var(--c-accent) 58%,transparent 58%);
  }
  .split-media{
    border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);
    box-shadow:var(--shadow-1);aspect-ratio:4/3;background:var(--c-surface-2);
  }
  .split-media img{width:100%;height:100%;}

  /* ---------- faq ---------- */
  .faq-list{display:grid;gap:12px;max-width:900px;}
  .faq-item{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
    transition:border-color .2s ease;
  }
  .faq-item[open]{border-color:rgba(111,75,255,.6);background:var(--c-surface-2);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:62px;padding:18px 24px;font-size:16.5px;font-weight:700;color:var(--c-text);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"";flex:0 0 auto;width:9px;height:9px;border-right:2px solid var(--c-accent);border-bottom:2px solid var(--c-accent);
    transform:rotate(45deg);transition:transform .2s ease;
  }
  .faq-item[open] summary::after{transform:rotate(-135deg);}
  .faq-item .faq-body{padding:0 24px 22px;color:var(--c-text-2);font-size:15px;}

  /* ---------- cta ---------- */
  .cta-band{
    position:relative;overflow:hidden;border-radius:20px;border:1px solid var(--c-line-strong);
    background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;
    padding:56px;
  }
  .cta-band::before{
    content:"";position:absolute;inset:0;
    background:linear-gradient(120deg,rgba(10,11,16,.94) 0%,rgba(20,16,48,.88) 55%,rgba(10,11,16,.92) 100%);
  }
  .cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 380px;gap:40px;align-items:center;}
  .cta-inner h2{font-size:30px;}
  .cta-inner p{color:var(--c-text-2);margin-top:12px;font-size:15px;}
  .subscribe{display:flex;gap:10px;}
  .subscribe input{
    flex:1;height:48px;padding:0 16px;border-radius:var(--r-btn);background:rgba(13,16,23,.85);
    border:1px solid var(--c-line-strong);color:var(--c-text);
  }
  .subscribe input::placeholder{color:var(--c-text-3);}
  .subscribe input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(44,232,192,.14);}
  .form-note{margin-top:10px;font-size:13px;color:var(--c-text-3);min-height:20px;}

  /* ---------- footer ---------- */
  .site-footer{border-top:1px solid var(--c-line);background:#08090E;padding:64px 0 28px;margin-top:0;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
  .footer-brand p{color:var(--c-text-2);font-size:14.5px;margin-top:14px;max-width:320px;}
  .footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--c-text);margin-bottom:16px;}
  .footer-col ul{display:grid;gap:10px;}
  .footer-col a{color:var(--c-text-2);font-size:14.5px;}
  .footer-col a:hover{color:var(--c-accent);}
  .footer-contact{color:var(--c-text-2);font-size:14.5px;display:grid;gap:12px;}
  .footer-contact .k{color:var(--c-text-3);font-size:12.5px;font-family:var(--mono);letter-spacing:.08em;}
  .footer-bottom{
    margin-top:44px;padding-top:22px;border-top:1px solid var(--c-line);display:flex;
    align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--c-text-3);font-size:13.5px;
  }
  .to-top{
    background:transparent;border:1px solid var(--c-line-strong);color:var(--c-text-2);border-radius:999px;
    padding:8px 18px;cursor:pointer;font-size:13.5px;transition:all .18s ease;
  }
  .to-top:hover{border-color:var(--c-accent);color:var(--c-accent);transform:translateY(-2px);}

  /* ---------- motion ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease;}
  .reveal.is-in{opacity:1;transform:none;}

  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important;}
    .reveal{opacity:1;transform:none;}
  }

  /* ---------- responsive ---------- */
  @media (max-width:1024px){
    .container{padding:0 24px;}
    .section{padding:76px 0;}
    .nav-links{display:none;}
    .burger{display:grid;}
    .page-hero h1{font-size:34px;}
    .stat-grid{grid-template-columns:repeat(2,1fr);}
    .type-grid{grid-template-columns:repeat(2,1fr);}
    .split{grid-template-columns:1fr;gap:32px;}
    .cta-inner{grid-template-columns:1fr;gap:26px;}
    .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  }
  @media (max-width:768px){
    .section-head{align-items:flex-start;}
    .section-head h2{font-size:26px;}
    .page-hero{min-height:auto;}
    .page-hero h1{font-size:28px;}
    .page-hero .lead{font-size:15.5px;}
    .tl-item{grid-template-columns:1fr;gap:14px;}
    .timeline::before{display:none;}
    .tl-num{width:52px;height:52px;font-size:17px;box-shadow:none;}
    .tl-body{grid-template-columns:1fr;gap:18px;}
    .tl-thumb{order:-1;}
    .cta-band{padding:34px 24px;}
    .cta-inner h2{font-size:24px;}
  }
  @media (max-width:520px){
    .container{padding:0 16px;}
    .section{padding:56px 0;}
    .stat-grid{grid-template-columns:1fr;}
    .type-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .subscribe{flex-direction:column;}
    .subscribe .btn{width:100%;}
    .search-form{flex-direction:column;align-items:stretch;}
    .search-form .btn{width:100%;}
    .page-hero h1{font-size:25px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    /* schedule table -> cards */
    table.schedule,table.schedule thead,table.schedule tbody,table.schedule tr,table.schedule td{display:block;width:100%;}
    table.schedule thead{display:none;}
    table.schedule tr{border-bottom:1px solid var(--c-line);padding:8px 0;}
    table.schedule td{border:none;padding:8px 20px;}
    table.schedule td::before{
      content:attr(data-l);display:block;font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;
      color:var(--c-text-3);text-transform:uppercase;margin-bottom:4px;
    }
  }

/* roulang page: category4 */
:root{
  --c-bg:#0A0B10;--c-bg-soft:#10131C;--c-surface:#161A26;--c-surface-2:#1D2233;
  --c-line:rgba(255,255,255,.08);--c-line-strong:rgba(255,255,255,.16);
  --c-primary:#6F4BFF;--c-primary-glow:rgba(111,75,255,.45);
  --c-accent:#2CE8C0;--c-highlight:#D8FF45;
  --c-text:#EDEFFA;--c-text-2:#A3ABC2;--c-text-3:#6E768C;
  --c-invert-bg:#F4F5F9;
  --r-card:16px;--r-img:14px;--r-btn:10px;--r-pill:999px;
  --shadow:0 8px 24px rgba(0,0,0,.35);--shadow-hover:0 16px 40px var(--c-primary-glow);
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
html body{
  margin:0;padding-top:68px;background:var(--c-bg);color:var(--c-text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  background-image:linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:48px 48px;
}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.5px;line-height:1.25}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}
::selection{background:rgba(111,75,255,.55);color:#fff}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- Header / Nav ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;height:68px;
  background:rgba(10,11,16,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);transition:background .25s,box-shadow .25s}
.site-header.is-solid{background:rgba(10,11,16,.97);box-shadow:0 12px 32px rgba(0,0,0,.5)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),#4326C9);color:#fff;font-weight:800;font-size:17px;
  box-shadow:0 0 18px var(--c-primary-glow)}
.brand-name{font-size:19px;font-weight:800;letter-spacing:-.5px;color:var(--c-text)}
.brand-name b{color:var(--c-accent);font-weight:800}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{position:relative;display:inline-flex;align-items:center;height:68px;padding:0 15px;
  font-size:15.5px;color:var(--c-text-2);transition:color .18s}
.nav-links a::after{content:"";position:absolute;left:15px;right:15px;bottom:0;height:2px;
  background:var(--c-accent);box-shadow:0 0 12px var(--c-accent);
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease}
.nav-links a:hover{color:var(--c-text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--c-text);text-shadow:0 0 14px rgba(44,232,192,.55)}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:10px;flex-shrink:0}
.icon-btn{width:42px;height:42px;border-radius:10px;display:grid;place-items:center;
  color:var(--c-text-2);border:1px solid transparent;transition:all .18s}
.icon-btn:hover{color:var(--c-accent);border-color:var(--c-line-strong);background:rgba(255,255,255,.04)}
.icon-btn:active{transform:scale(.95)}
.burger{display:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15.5px;font-weight:700;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s,box-shadow .18s,background .18s,color .18s,border-color .18s}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{background:#7E5DFF;transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-accent{background:var(--c-highlight);color:#10131C}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(216,255,69,.28)}
.btn-ghost{border-color:var(--c-line-strong);color:var(--c-text)}
.btn-ghost:hover{border-color:var(--c-accent);color:var(--c-accent);background:rgba(44,232,192,.08);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:14.5px}

/* ---------- Search panel ---------- */
.search-panel{position:fixed;top:68px;left:0;right:0;z-index:55;background:var(--c-bg-soft);
  border-bottom:1px solid var(--c-line);padding:20px 0;
  opacity:0;visibility:hidden;transform:translateY(-10px);transition:all .22s ease}
.search-panel.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.search-form{display:flex;gap:12px;align-items:center}
.field{flex:1;background:var(--c-surface);border:1px solid var(--c-line-strong);border-radius:var(--r-btn);
  padding:12px 16px;color:var(--c-text);transition:border-color .18s,box-shadow .18s}
.field::placeholder{color:var(--c-text-3)}
.field:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(44,232,192,.18)}
.search-hint{margin-top:10px;font-size:13.5px;color:var(--c-text-3)}

/* ---------- Drawer ---------- */
.drawer-mask{position:fixed;inset:0;z-index:70;background:rgba(4,5,9,.72);
  opacity:0;visibility:hidden;transition:all .25s}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;z-index:71;width:308px;max-width:86vw;
  background:var(--c-bg-soft);border-left:1px solid var(--c-line);
  transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:18px;overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-group-title{font-size:12.5px;letter-spacing:.14em;color:var(--c-text-3);margin:14px 0 8px}
.drawer-nav a{display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:10px;
  color:var(--c-text-2);font-size:16px;border-left:3px solid transparent;transition:all .18s}
.drawer-nav a:hover{background:rgba(255,255,255,.05);color:var(--c-text)}
.drawer-nav a.is-active{color:var(--c-text);border-left-color:var(--c-accent);background:rgba(44,232,192,.08)}
.drawer .btn{margin-top:20px;width:100%}

/* ---------- Hero banner ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line);
  background:linear-gradient(90deg,rgba(10,11,16,.94) 0%,rgba(10,11,16,.7) 55%,rgba(10,11,16,.55) 100%),
             url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  padding:66px 0 46px}
.page-hero::after{content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(111,75,255,.38),transparent 65%);pointer-events:none}
.hero-inner{position:relative;z-index:2;max-width:820px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-text-2);margin-bottom:18px}
.crumbs a{transition:color .18s}
.crumbs a:hover{color:var(--c-accent)}
.crumbs .sep{color:var(--c-text-3)}
.crumbs .current{color:var(--c-text)}
.hero-title{font-size:clamp(28px,3.6vw,46px);letter-spacing:-.6px;margin-bottom:16px}
.hero-sub{font-size:17px;color:var(--c-text-2);max-width:660px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;line-height:1.5}
.badge-accent{color:var(--c-accent);border:1px solid rgba(44,232,192,.55);background:rgba(44,232,192,.12)}
.badge-highlight{background:var(--c-highlight);color:#10131C}
.badge-muted{color:var(--c-text-2);border:1px solid var(--c-line-strong);background:rgba(255,255,255,.04)}

/* ---------- Layout ---------- */
main{padding:56px 0 0}
.layout{display:grid;grid-template-columns:284px minmax(0,1fr);gap:44px;align-items:start}
.side-sticky{position:sticky;top:96px}
.toc-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px}
.toc-label{font-size:12.5px;letter-spacing:.14em;color:var(--c-text-3);margin-bottom:12px}
.toc-list li+li{margin-top:2px}
.toc-list a{display:block;padding:9px 12px;border-left:3px solid transparent;border-radius:0 8px 8px 0;
  font-size:15px;color:var(--c-text-2);transition:all .18s}
.toc-list a:hover{color:var(--c-text);background:rgba(255,255,255,.05)}
.toc-list a.is-active{color:var(--c-text);border-left-color:var(--c-accent);background:rgba(44,232,192,.09)}
.side-note{margin-top:20px;background:linear-gradient(160deg,var(--c-surface-2),var(--c-surface));
  border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px}
.side-note p{font-size:14.5px;color:var(--c-text-2);margin:12px 0 14px}
.side-stat{margin-top:20px;text-align:center;background:var(--c-bg-soft);border:1px dashed var(--c-line-strong);
  border-radius:var(--r-card);padding:18px}
.side-stat .num{font-family:var(--mono);font-size:26px;color:var(--c-highlight);font-weight:700;line-height:1.2}
.side-stat .cap{font-size:13px;color:var(--c-text-3);margin-top:6px}

.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:700;color:var(--c-accent);transition:gap .18s}
.link-arrow::after{content:"→";transition:transform .18s}
.link-arrow:hover{color:#5CF6D6}
.link-arrow:hover::after{transform:translateX(4px)}

/* ---------- Content blocks ---------- */
.block{margin-bottom:64px;scroll-margin-top:96px}
.block:last-child{margin-bottom:0}
.sec-head{margin-bottom:24px}
.sec-kicker{font-family:var(--mono);font-size:13px;letter-spacing:.16em;color:var(--c-highlight);margin-bottom:10px;display:block}
.sec-title{font-size:clamp(23px,2.4vw,31px);margin-bottom:12px}
.sec-desc{color:var(--c-text-2);font-size:16.5px;max-width:720px}

.split{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center}
.img-wrap{position:relative;overflow:hidden;border-radius:var(--r-img);border:1px solid var(--c-line);
  background:var(--c-surface-2);box-shadow:var(--shadow)}
.img-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.img-wrap:hover img{transform:scale(1.03)}
.img-16x9{aspect-ratio:16/9}
.img-3x2{aspect-ratio:3/2}

.check-list li{position:relative;padding-left:30px;margin-bottom:14px;color:var(--c-text-2);font-size:16.5px}
.check-list li::before{content:"";position:absolute;left:6px;top:11px;width:8px;height:8px;
  background:var(--c-accent);box-shadow:0 0 10px var(--c-accent);transform:rotate(45deg)}
.check-list li strong{color:var(--c-text);font-weight:700}

.step-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.step-card{position:relative;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 24px;transition:transform .2s,border-color .2s,box-shadow .2s}
.step-card:hover{transform:translateY(-4px);border-color:rgba(111,75,255,.7);box-shadow:var(--shadow-hover)}
.step-num{font-family:var(--mono);font-size:30px;font-weight:700;color:var(--c-highlight);line-height:1;margin-bottom:14px;display:block}
.step-card h3{font-size:19px;margin-bottom:10px}
.step-card p{font-size:15.5px;color:var(--c-text-2);margin:0}
.step-meta{margin-top:14px;font-size:13px;color:var(--c-text-3);font-family:var(--mono)}

.data-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:26px 0}
.data-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:22px}
.data-card .label{font-size:13px;color:var(--c-text-3);letter-spacing:.06em;margin-bottom:10px}
.data-card .value{font-family:var(--mono);font-size:28px;font-weight:700;color:var(--c-highlight);line-height:1.15}
.data-card .desc{font-size:14.5px;color:var(--c-text-2);margin-top:10px}

.compare-bar{display:flex;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;background:var(--c-surface)}
.compare-bar div{flex:1;padding:16px 18px;font-size:14.5px;color:var(--c-text-2)}
.compare-bar div+div{border-left:1px solid var(--c-line)}
.compare-bar strong{display:block;color:var(--c-text);font-size:15.5px;margin-bottom:4px}

.row-list{display:flex;flex-direction:column;gap:20px}
.row-item{display:grid;grid-template-columns:300px minmax(0,1fr);gap:24px;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:16px;
  transition:transform .2s,border-color .2s,box-shadow .2s}
.row-item:hover{transform:translateY(-4px);border-color:rgba(111,75,255,.7);box-shadow:var(--shadow-hover)}
.row-item h3{font-size:19px;margin-bottom:10px}
.row-item p{font-size:15.5px;color:var(--c-text-2);margin-bottom:12px}
.row-meta{display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--c-text-3);font-family:var(--mono)}

.mistake-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.mistake-col{border-radius:var(--r-card);padding:24px;border:1px solid var(--c-line)}
.mistake-col.bad{background:rgba(255,86,86,.05);border-color:rgba(255,120,120,.24)}
.mistake-col.good{background:rgba(44,232,192,.06);border-color:rgba(44,232,192,.3)}
.mistake-col h3{font-size:18px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.mistake-col ul li{position:relative;padding-left:20px;margin-bottom:12px;font-size:15.5px;color:var(--c-text-2)}
.mistake-col.bad ul li::before{content:"×";position:absolute;left:0;top:0;color:#FF7A7A;font-weight:700}
.mistake-col.good ul li::before{content:"✓";position:absolute;left:0;top:0;color:var(--c-accent);font-weight:700}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:64px;padding:14px 4px;cursor:pointer;list-style:none;font-size:17px;font-weight:700;transition:color .18s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";width:9px;height:9px;flex:0 0 9px;margin-right:6px;
  border-right:2px solid var(--c-text-2);border-bottom:2px solid var(--c-text-2);
  transform:rotate(-45deg);transition:transform .25s,border-color .2s}
.faq-item summary:hover{color:var(--c-accent)}
.faq-item[open] summary::after{transform:rotate(45deg);border-color:var(--c-accent)}
.faq-item[open] summary{color:var(--c-accent)}
.faq-body{padding:4px 4px 22px;color:var(--c-text-2);font-size:16px;background:transparent}

/* ---------- CTA ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:20px;border:1px solid var(--c-line);
  background:linear-gradient(120deg,rgba(10,11,16,.95),rgba(30,20,70,.86)),
             url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  padding:48px 44px;margin:72px 0 0}
.cta-band::before{content:"";position:absolute;left:-80px;bottom:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(44,232,192,.28),transparent 65%);pointer-events:none}
.cta-inner{position:relative;z-index:2;max-width:720px}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:12px}
.cta-band p{color:var(--c-text-2);margin-bottom:24px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- Subscribe ---------- */
.subscribe{margin-top:72px;background:var(--c-invert-bg);color:#14161F;border-radius:20px;padding:44px}
.subscribe h2{font-size:clamp(22px,2.4vw,29px);margin-bottom:10px;color:#14161F}
.subscribe p{color:#4C5468;margin-bottom:24px;max-width:640px}
.subscribe .form-row{display:flex;gap:12px}
.subscribe .field{background:#fff;border:1px solid #D5D9E6;color:#14161F}
.subscribe .field::placeholder{color:#8A93A8}
.subscribe .field:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(111,75,255,.18)}
.subscribe .form-note{margin-top:12px;font-size:13.5px;color:#6E768C}

/* ---------- Footer ---------- */
.site-footer{margin-top:96px;background:var(--c-bg-soft);border-top:1px solid var(--c-line);padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px}
.footer-brand p{font-size:14.5px;color:var(--c-text-2);margin-top:16px;max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--c-text)}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14.5px;color:var(--c-text-2);transition:color .18s}
.footer-col ul a:hover{color:var(--c-accent)}
.footer-contact{font-size:14.5px;color:var(--c-text-2);line-height:1.9}
.footer-contact .k{color:var(--c-text-3);font-size:13px}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13.5px;color:var(--c-text-3)}
.to-top{border:1px solid var(--c-line-strong);border-radius:var(--r-pill);padding:8px 18px;
  font-size:13.5px;color:var(--c-text-2);transition:all .18s}
.to-top:hover{color:var(--c-accent);border-color:var(--c-accent);background:rgba(44,232,192,.08)}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .img-wrap:hover img{transform:none}
}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .nav-cta{display:none}
  .burger{display:grid}
  .layout{grid-template-columns:1fr;gap:32px}
  .side-sticky{position:static;top:auto}
  .toc-card{padding:16px}
  .toc-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none}
  .toc-list::-webkit-scrollbar{display:none}
  .toc-list li+li{margin-top:0}
  .toc-list a{border-left:0;border:1px solid var(--c-line);border-radius:var(--r-pill);
    padding:9px 15px;white-space:nowrap;border-radius:999px}
  .toc-list a.is-active{border-color:var(--c-accent);background:rgba(44,232,192,.1);border-left-color:var(--c-accent)}
  .split{grid-template-columns:1fr;gap:26px}
  .step-grid{grid-template-columns:1fr}
  .data-grid{grid-template-columns:1fr 1fr}
  .row-item{grid-template-columns:1fr}
  .mistake-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .compare-bar{flex-direction:column}
  .compare-bar div+div{border-left:0;border-top:1px solid var(--c-line)}
}
@media (max-width:640px){
  html body{font-size:16px;padding-top:64px}
  .container{padding:0 16px}
  .site-header,.nav-wrap{height:64px}
  .search-panel{top:64px}
  main{padding-top:40px}
  .page-hero{padding:48px 0 36px}
  .block{margin-bottom:52px;scroll-margin-top:88px}
  .data-grid{grid-template-columns:1fr}
  .cta-band{padding:34px 22px;border-radius:16px}
  .subscribe{padding:30px 20px;border-radius:16px}
  .subscribe .form-row{flex-direction:column}
  .subscribe .form-row .btn{width:100%}
  .search-form{flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%}
  .row-item{padding:14px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category5 */
:root{
  --c-bg:#0A0B10;
  --c-bg-soft:#10131C;
  --c-surface:#161A26;
  --c-surface-2:#1D2233;
  --c-line:rgba(255,255,255,.08);
  --c-line-strong:rgba(255,255,255,.16);
  --c-primary:#6F4BFF;
  --c-primary-glow:rgba(111,75,255,.45);
  --c-accent:#2CE8C0;
  --c-highlight:#D8FF45;
  --c-text:#EDEFFA;
  --c-text-2:#A3ABC2;
  --c-text-3:#6E768C;
  --c-invert-bg:#F4F5F9;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px var(--c-primary-glow);
  --font-mono:ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;height:auto;}
button,input{font:inherit;color:inherit;}
button{background:none;border:none;cursor:pointer;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media (max-width:1024px){.container{padding:0 24px;}}
@media (max-width:640px){.container{padding:0 16px;}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,11,16,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:#0A0B10;box-shadow:0 12px 30px rgba(0,0,0,.5);}
.nav-wrap{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;}
.footer-brand .brand{cursor:default;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,#6F4BFF,#3A2394);
  color:#fff;font-weight:800;font-size:16px;
  box-shadow:0 0 18px var(--c-primary-glow);
}
.brand-name{font-size:17px;letter-spacing:-.4px;color:var(--c-text);}
.brand-name b{color:var(--c-accent);font-weight:800;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-links a{
  position:relative;padding:10px 12px;font-size:15px;color:var(--c-text-2);
  border-radius:8px;transition:color .18s ease;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--c-accent);box-shadow:0 0 10px var(--c-accent);
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav-links a:hover{color:var(--c-text);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--c-text);text-shadow:0 0 12px rgba(44,232,192,.4);}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:10px;margin-left:4px;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--c-line);background:transparent;color:var(--c-text-2);
  transition:all .2s ease;
}
.icon-btn:hover{color:var(--c-text);border-color:var(--c-line-strong);background:rgba(255,255,255,.06);}
.icon-btn:active{transform:scale(.96);}
.burger{display:none;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all .2s ease;min-height:44px;white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 22px rgba(111,75,255,.35);}
.btn-primary:hover{background:#7C5CFF;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0) scale(.98);}
.btn-ghost{border-color:var(--c-line-strong);color:var(--c-text);background:transparent;}
.btn-ghost:hover{background:rgba(111,75,255,.16);border-color:var(--c-primary);}
.btn-ghost:active{transform:scale(.98);}
.btn-accent{background:var(--c-highlight);color:#0A0B10;font-weight:700;}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(216,255,69,.22);}
.btn-accent:active{transform:translateY(0) scale(.98);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-accent);
  font-size:15px;font-weight:600;transition:color .2s ease;
}
.link-arrow span{transition:transform .2s ease;}
.link-arrow:hover span{transform:translateX(4px);}
.link-arrow:hover{color:#63F5D6;}

/* ---------- Mobile drawer & search ---------- */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(86vw,340px);
  background:var(--c-bg-soft);border-left:1px solid var(--c-line);
  transform:translateX(100%);transition:transform .28s ease;
  z-index:90;padding:18px 16px 32px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-title{font-size:13px;color:var(--c-text-3);letter-spacing:.08em;}
.drawer a{
  display:block;padding:14px 12px;border-radius:10px;color:var(--c-text-2);
  font-size:16px;min-height:44px;transition:background .2s ease,color .2s ease;
}
.drawer a:hover{background:rgba(255,255,255,.05);color:var(--c-text);}
.drawer a.is-active{
  color:var(--c-text);border-left:3px solid var(--c-accent);
  background:rgba(44,232,192,.07);padding-left:14px;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.62);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.search-panel{
  position:fixed;top:68px;left:0;right:0;z-index:55;
  background:var(--c-bg-soft);border-bottom:1px solid var(--c-line);
  padding:20px 0;opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:all .22s ease;
}
.search-panel.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.search-row{display:flex;gap:12px;}
.search-row input{
  flex:1;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-btn);padding:12px 16px;font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-row input::placeholder{color:var(--c-text-3);}
.search-row input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(44,232,192,.16);}
.search-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.search-tags span{
  font-size:13px;color:var(--c-text-2);padding:5px 12px;border-radius:999px;
  border:1px solid var(--c-line);cursor:pointer;transition:all .2s ease;
}
.search-tags span:hover{color:var(--c-accent);border-color:rgba(44,232,192,.5);background:rgba(44,232,192,.08);}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;padding:78px 0 62px;
  background-color:#0A0B10;
  background-image:linear-gradient(rgba(10,11,16,.74),rgba(10,11,16,.86)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.page-hero::before{
  content:"";position:absolute;width:520px;height:520px;right:-140px;top:-180px;
  background:radial-gradient(circle,rgba(111,75,255,.42),transparent 65%);
  filter:blur(20px);pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;width:380px;height:380px;left:-120px;bottom:-200px;
  background:radial-gradient(circle,rgba(44,232,192,.24),transparent 62%);
  filter:blur(24px);pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-text-2);
}
.breadcrumb a{color:var(--c-text-2);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--c-accent);}
.breadcrumb .sep{color:var(--c-text-3);}
.breadcrumb .current{color:var(--c-accent);}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;margin-top:20px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  border:1px solid rgba(44,232,192,.42);background:rgba(44,232,192,.1);color:var(--c-accent);
}
.page-title{
  font-size:44px;line-height:1.24;font-weight:800;letter-spacing:-.5px;
  margin:18px 0 16px;max-width:880px;
}
.page-title em{font-style:normal;color:var(--c-highlight);}
.hero-lead{color:var(--c-text-2);font-size:17px;max-width:760px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:40px;margin-top:38px;
  padding-top:26px;border-top:1px solid var(--c-line);
}
.stat-num{font-family:var(--font-mono);font-size:26px;font-weight:700;color:var(--c-highlight);line-height:1.3;}
.stat-label{font-size:13px;color:var(--c-text-3);}

/* ---------- Sections ---------- */
.section{padding:88px 0;}
.section-soft{background:var(--c-bg-soft);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{
  display:flex;justify-content:space-between;align-items:flex-end;
  gap:24px;margin-bottom:40px;flex-wrap:wrap;
}
.eyebrow{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;
  color:var(--c-highlight);text-transform:uppercase;
}
.section-title{font-size:30px;font-weight:800;letter-spacing:-.5px;margin-top:10px;line-height:1.35;}
.section-desc{color:var(--c-text-2);font-size:15px;max-width:600px;margin-top:10px;}

/* ---------- Table ---------- */
.table-wrap{
  border:1px solid var(--c-line);border-radius:var(--radius-card);
  overflow:hidden;background:var(--c-surface);box-shadow:var(--shadow-card);
}
.gift-table{width:100%;border-collapse:collapse;font-size:15px;}
.gift-table thead th{
  background:var(--c-surface-2);text-align:left;padding:16px 18px;
  font-size:13px;font-weight:600;color:var(--c-text-3);letter-spacing:.04em;
  border-bottom:1px solid var(--c-line);white-space:nowrap;
}
.gift-table td{
  padding:16px 18px;border-bottom:1px solid var(--c-line);
  color:var(--c-text-2);vertical-align:top;
}
.gift-table tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
.gift-table tbody tr:hover{background:rgba(111,75,255,.09);}
.gift-table tbody tr:last-child td{border-bottom:none;}
.gift-table td:first-child{color:var(--c-text);font-weight:600;}
.table-note{color:var(--c-text-3);font-size:13px;margin-top:14px;}
.tag{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;
  border-radius:999px;font-size:12px;line-height:1;
  border:1px solid rgba(44,232,192,.42);color:var(--c-accent);
  background:rgba(44,232,192,.12);white-space:nowrap;
}
.tag-solid{
  background:var(--c-highlight);color:#0A0B10;border-color:transparent;font-weight:700;
}

/* ---------- Compare cards ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.compare-card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.compare-card:hover{transform:translateY(-4px);border-color:var(--c-primary);box-shadow:var(--shadow-hover);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-2);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.compare-card:hover .card-media img{transform:scale(1.03);}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(10,11,16,.78),rgba(10,11,16,0) 62%);
}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.card-body h3{font-size:20px;font-weight:700;margin-bottom:8px;letter-spacing:-.3px;}
.card-body .card-sub{font-size:13px;color:var(--c-text-3);font-family:var(--font-mono);margin-bottom:14px;}
.feat-list{margin-bottom:20px;}
.feat-list li{
  position:relative;padding-left:20px;margin-bottom:9px;
  font-size:15px;color:var(--c-text-2);
}
.feat-list li::before{
  content:"";position:absolute;left:0;top:12px;width:9px;height:2px;
  background:var(--c-accent);border-radius:2px;
}
.card-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);}

/* ---------- Flow ---------- */
.flow{max-width:900px;}
.flow-item{
  display:grid;grid-template-columns:64px 1fr;gap:22px;
  padding-bottom:34px;position:relative;
}
.flow-item:not(:last-child)::before{
  content:"";position:absolute;left:25px;top:58px;bottom:6px;width:1px;
  background:var(--c-line-strong);
}
.flow-num{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  font-family:var(--font-mono);font-size:16px;font-weight:700;color:var(--c-highlight);
  background:rgba(216,255,69,.08);border:1px solid rgba(216,255,69,.3);
}
.flow-body h3{font-size:20px;font-weight:700;margin-bottom:8px;}
.flow-body p{color:var(--c-text-2);font-size:15.5px;max-width:680px;}
.flow-body .flow-meta{
  margin-top:10px;font-family:var(--font-mono);font-size:13px;color:var(--c-text-3);
}

/* ---------- Checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.check-card{
  display:flex;gap:16px;padding:22px;border-radius:var(--radius-card);
  background:var(--c-surface);border:1px solid var(--c-line);
  transition:border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.check-card:hover{border-color:var(--c-primary);transform:translateY(-3px);box-shadow:var(--shadow-card);}
.check-icon{
  flex:0 0 auto;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(111,75,255,.16);border:1px solid rgba(111,75,255,.4);
  color:var(--c-highlight);font-family:var(--font-mono);font-size:14px;font-weight:700;
}
.check-card h3{font-size:17px;font-weight:700;margin-bottom:6px;}
.check-card p{font-size:14.5px;color:var(--c-text-2);}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;}
.faq-item{
  border:1px solid var(--c-line);border-radius:14px;background:var(--c-surface);
  margin-bottom:12px;overflow:hidden;transition:border-color .22s ease;
}
.faq-item:hover{border-color:var(--c-line-strong);}
.faq-item[open]{border-color:rgba(111,75,255,.5);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 56px 20px 22px;font-size:16.5px;font-weight:600;
  min-height:60px;display:flex;align-items:center;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";position:absolute;right:24px;top:50%;width:8px;height:8px;
  border-right:2px solid var(--c-accent);border-bottom:2px solid var(--c-accent);
  transform:translateY(-70%) rotate(45deg);transition:transform .22s ease;
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(225deg);}
.faq-body{
  padding:18px 22px 22px;color:var(--c-text-2);font-size:15.5px;
  border-top:1px solid var(--c-line);background:rgba(255,255,255,.02);
}

/* ---------- Summary ---------- */
.summary-box{
  margin-top:36px;padding:26px 28px;border-radius:var(--radius-card);
  border:1px solid var(--c-line);background:linear-gradient(120deg,rgba(111,75,255,.14),rgba(44,232,192,.06));
}
.summary-box h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.summary-box p{color:var(--c-text-2);font-size:15px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;padding:78px 0;border-top:1px solid var(--c-line);
  background-image:linear-gradient(rgba(10,11,16,.82),rgba(10,11,16,.9)),url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
}
.cta-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;}
.cta-inner h2{font-size:30px;font-weight:800;letter-spacing:-.5px;margin-bottom:12px;}
.cta-inner p{color:var(--c-text-2);font-size:16px;max-width:560px;}
.subscribe-form{display:flex;gap:12px;}
.subscribe-form input{
  flex:1;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-btn);padding:13px 16px;font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.subscribe-form input::placeholder{color:var(--c-text-3);}
.subscribe-form input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(44,232,192,.16);}
.form-hint{font-size:13px;color:var(--c-text-3);margin-top:12px;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--c-bg-soft);border-top:1px solid var(--c-line);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;
}
.footer-brand p{color:var(--c-text-2);font-size:14.5px;margin-top:16px;max-width:320px;}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--c-text);}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{color:var(--c-text-2);font-size:14.5px;transition:color .2s ease;}
.footer-col ul li a:hover{color:var(--c-accent);}
.footer-contact{color:var(--c-text-2);font-size:14.5px;}
.footer-contact div{margin-bottom:12px;}
.footer-contact .k{color:var(--c-text-3);font-size:13px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:var(--c-text-3);
}
.to-top{
  padding:9px 16px;border-radius:999px;border:1px solid var(--c-line);
  color:var(--c-text-2);font-size:13px;transition:all .2s ease;min-height:38px;
}
.to-top:hover{color:var(--c-accent);border-color:rgba(44,232,192,.5);background:rgba(44,232,192,.08);}

/* ---------- Content blocks ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.split-media{
  border-radius:20px;overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--shadow-card);aspect-ratio:16/10;background:var(--c-surface-2);
}
.split-media img{width:100%;height:100%;object-fit:cover;}
.split-body p{color:var(--c-text-2);font-size:16px;margin-bottom:16px;}
.split-body h2{font-size:28px;font-weight:800;letter-spacing:-.5px;margin-bottom:16px;}

@media (max-width:1024px){
  .nav-links{display:none;}
  .burger{display:grid;place-items:center;}
  .nav-right .btn-accent{display:none;}
  .compare-grid{grid-template-columns:repeat(2,1fr);}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .search-panel{top:64px;}
}
@media (max-width:768px){
  .page-title{font-size:30px;}
  .section{padding:60px 0;}
  .page-hero{padding:56px 0 46px;}
  .section-title{font-size:24px;}
  .compare-grid{grid-template-columns:1fr;}
  .check-grid{grid-template-columns:1fr;}
  .hero-stats{gap:26px;}
  .gift-table thead{display:none;}
  .gift-table,.gift-table tbody,.gift-table tr,.gift-table td{display:block;width:100%;}
  .gift-table tbody tr{
    border:1px solid var(--c-line);border-radius:14px;
    margin-bottom:12px;padding:8px 12px;background:var(--c-surface) !important;
  }
  .gift-table td{
    display:flex;justify-content:space-between;gap:14px;
    border-bottom:1px dashed var(--c-line);padding:10px 2px;
  }
  .gift-table td:last-child{border-bottom:none;}
  .gift-table td::before{
    content:attr(data-label);color:var(--c-text-3);font-size:13px;flex:0 0 auto;
  }
  .gift-table td:first-child{font-size:16px;}
}
@media (max-width:520px){
  .page-title{font-size:27px;}
  .hero-actions .btn{width:100%;}
  .subscribe-form{flex-direction:column;}
  .subscribe-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .flow-item{grid-template-columns:52px 1fr;gap:16px;}
  .flow-item:not(:last-child)::before{left:21px;}
  .flow-num{width:44px;height:44px;border-radius:12px;font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}