/* roulang page: index */
:root{
  --bg-deep:#060B12;
  --bg-panel:#0C1522;
  --bg-raise:#111E2F;
  --glass:rgba(255,255,255,.06);
  --line:rgba(126,180,255,.14);
  --line-strong:rgba(126,180,255,.28);
  --brand:#35E6C0;
  --brand-deep:#12A98C;
  --accent:#FFB84D;
  --text:#EAF2FF;
  --text-sub:#A3B4CB;
  --text-dim:#6E819A;
  --radius-card:18px;
  --radius-lg:24px;
  --radius-img:16px;
  --radius-pill:999px;
  --shadow-card:0 24px 60px -32px rgba(0,0,0,.85);
  --shadow-card-hover:0 30px 70px -30px rgba(0,0,0,.9);
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  padding-bottom:84px;
}
body::before{
  content:"";
  position:fixed;
  inset:0 0 auto 0;
  height:800px;
  background:
    radial-gradient(760px 420px at 16% -8%, rgba(53,230,192,.10), transparent 70%),
    radial-gradient(620px 360px at 88% 4%, rgba(126,180,255,.08), transparent 72%);
  pointer-events:none;
  z-index:0;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:88px 88px;
  pointer-events:none;
  z-index:0;
  mask-image:radial-gradient(circle at 50% 0%, #000 0%, transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 50% 0%, #000 0%, transparent 72%);
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:#7CF2DC}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
@media (min-width:1024px){.container{padding:0 32px}}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,11,18,.82);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background .24s var(--ease), box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,11,18,.94);
  box-shadow:0 12px 40px -22px rgba(53,230,192,.55);
}
.nav-wrap{display:flex;align-items:center;gap:18px;height:72px;transition:height .24s var(--ease)}
.site-header.is-scrolled .nav-wrap{height:60px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex-shrink:0}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  border:1px solid var(--line-strong);
  display:grid;place-items:center;
  background:linear-gradient(160deg, rgba(53,230,192,.16), rgba(53,230,192,0));
  box-shadow:0 0 0 1px rgba(53,230,192,.10) inset;
}
.brand-mark svg{width:20px;height:20px;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.01em}
.brand-text span{font-size:11px;color:var(--text-dim);letter-spacing:.16em;font-family:var(--font-mono)}
.main-nav{display:none}
@media (min-width:1024px){
  .main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
}
.nav-link{
  position:relative;display:inline-block;
  padding:9px 14px;border-radius:var(--radius-pill);
  font-size:15px;color:var(--text-sub);
  transition:color .22s var(--ease), background .22s var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(53,230,192,.9);
}
.nav-cta{margin-left:10px}
.nav-toggle{
  margin-left:auto;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);background:rgba(255,255,255,.04);
  display:grid;place-items:center;cursor:pointer;
}
@media (min-width:1024px){.nav-toggle{display:none}}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* Drawer */
.drawer{
  position:fixed;inset:0;z-index:120;display:none;
  background:rgba(6,11,18,.98);
  padding:22px 20px calc(28px + env(safe-area-inset-bottom));
  flex-direction:column;gap:6px;
  overflow-y:auto;
}
.drawer.is-open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);color:var(--text);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px}
.drawer-nav a{
  display:block;padding:15px 16px;border-radius:14px;
  border:1px solid var(--line);background:var(--bg-panel);
  color:var(--text);font-size:16px;font-weight:600;
}
.drawer-nav a.is-active{color:var(--brand);border-color:rgba(53,230,192,.42);box-shadow:0 0 24px -12px rgba(53,230,192,.8)}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;line-height:1;
  padding:14px 28px;border-radius:var(--radius-pill);
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
  text-decoration:none;white-space:nowrap;
}
.btn-primary{
  background:var(--brand);color:#04120E;
  box-shadow:0 0 0 1px rgba(53,230,192,.4), 0 12px 30px -12px rgba(53,230,192,.7);
}
.btn-primary:hover{
  background:#4FF0CD;color:#04120E;transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(53,230,192,.55), 0 18px 40px -14px rgba(53,230,192,.85);
}
.btn-primary:active{transform:translateY(-1px)}
.btn-ghost{
  background:transparent;color:var(--text);border:1px solid var(--line-strong);
}
.btn-ghost:hover{
  border-color:var(--brand);color:var(--brand);transform:translateY(-2px);
  box-shadow:inset 0 0 22px -8px rgba(53,230,192,.55);
}
.btn-ghost:active{transform:translateY(-1px)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-block{width:100%}

/* ============ Badge / Tag ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1.6;
  padding:4px 10px;border-radius:6px;
  color:var(--brand);background:rgba(53,230,192,.10);
  border:1px solid rgba(53,230,192,.30);
  letter-spacing:.02em;
}
.badge-accent{color:var(--accent);background:rgba(255,184,77,.10);border-color:rgba(255,184,77,.32)}
.chip{
  display:inline-flex;align-items:center;
  padding:8px 16px;border-radius:var(--radius-pill);
  font-size:14px;color:var(--text-sub);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:all .22s var(--ease);
}
.chip:hover{color:var(--text);border-color:var(--line-strong)}
.chip.is-active{color:#04120E;background:var(--brand);border-color:var(--brand);font-weight:700}

/* ============ Section base ============ */
.section{padding:56px 0;position:relative;z-index:1}
@media (min-width:1024px){.section{padding:104px 0}}
.section-head{
  display:flex;flex-direction:column;gap:14px;margin-bottom:32px;
}
@media (min-width:768px){
  .section-head{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;
  color:var(--accent);text-transform:uppercase;
}
.section-eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);opacity:.8}
.section-title{font-size:clamp(22px,2.8vw,34px);font-weight:700;line-height:1.3;margin-top:10px}
.section-desc{color:var(--text-sub);font-size:15px;max-width:60ch;margin-top:10px}
.link-more{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--brand);
  border-bottom:1px solid transparent;transition:border-color .22s var(--ease),gap .22s var(--ease);
}
.link-more:hover{border-bottom-color:var(--brand);gap:12px}

/* ============ Hero ============ */
.hero{position:relative;padding:40px 0 56px;overflow:hidden}
@media (min-width:1024px){
  .hero{padding:56px 0 96px;min-height:78vh;display:flex;align-items:center}
}
.hero .container{max-width:1320px}
.hero-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:48px;align-items:center}}
.hero-copy{max-width:640px}
.hero-tag{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 14px 6px 10px;border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);background:rgba(53,230,192,.07);
  font-size:13px;color:var(--text-sub);margin-bottom:22px;
}
.hero-tag i{
  width:7px;height:7px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 10px rgba(53,230,192,.95);display:inline-block;
}
h1.hero-title{
  font-size:clamp(30px,4.6vw,54px);
  font-weight:800;line-height:1.15;letter-spacing:-.01em;
  max-width:22ch;
}
h1.hero-title em{font-style:normal;color:var(--brand)}
.hero-sub{
  margin-top:20px;font-size:17px;line-height:1.8;color:var(--text-sub);max-width:34em;
}
@media (min-width:1024px){.hero-sub{font-size:19px}}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:30px;
  padding-top:22px;border-top:1px solid var(--line);
}
.hero-trust li{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-sub);
}
.hero-trust li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);flex:0 0 6px;
  box-shadow:0 0 8px rgba(53,230,192,.8);
}
.hero-visual{position:relative}
.hero-media{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line-strong);
  aspect-ratio:4/3;
  box-shadow:var(--shadow-card);
}
@media (min-width:1024px){.hero-media{aspect-ratio:5/5.2}}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(6,11,18,.10) 0%, rgba(6,11,18,.72) 100%);
}
.hero-card{
  position:relative;margin-top:-64px;margin-left:12px;margin-right:12px;
  z-index:2;
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(53,230,192,.40);
  border-radius:var(--radius-card);
  padding:20px;
  box-shadow:0 0 0 1px rgba(53,230,192,.10) inset, 0 26px 60px -30px rgba(0,0,0,.95);
}
@media (min-width:768px){.hero-card{margin-left:-24px;margin-right:0;padding:22px 24px}}
.hero-card-status{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-bottom:14px;border-bottom:1px solid var(--line);
  font-size:13px;color:var(--text-sub);
}
.hero-card-status b{color:var(--brand);font-weight:700;display:flex;align-items:center;gap:8px}
.hero-card-status b::before{
  content:"";width:8px;height:8px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 12px rgba(53,230,192,.95);
  animation:pulse 2.6s infinite ease-in-out;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}
.hero-card-list{margin-top:14px;display:grid;gap:10px}
.hero-card-list li{
  display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text);
}
.hero-card-list li span{
  font-family:var(--font-mono);font-size:12px;color:var(--accent);
  flex:0 0 auto;padding-top:3px;
}
.hero-card-time{
  margin-top:16px;padding-top:12px;border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:12px;color:var(--text-dim);
  display:flex;justify-content:space-between;gap:10px;
}

/* ============ Highlights ============ */
.highlight-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:900px){.highlight-grid{grid-template-columns:5fr 3.5fr 3.5fr;align-items:stretch}}
.card{
  position:relative;background:var(--bg-panel);
  border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,.26), transparent);
  pointer-events:none;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:rgba(53,230,192,.35)}
.card:hover .card-title{color:var(--brand)}
.highlight-main{display:flex;flex-direction:column}
.highlight-main .thumb{aspect-ratio:16/9;overflow:hidden}
.highlight-main .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.highlight-main:hover .thumb img{transform:scale(1.03)}
.highlight-body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1}
@media (min-width:1024px){.highlight-body{padding:28px 30px}}
.card-num{
  font-family:var(--font-mono);font-size:13px;color:var(--accent);letter-spacing:.12em;
}
.card-title{font-size:20px;font-weight:700;line-height:1.4;transition:color .22s var(--ease)}
.card-text{font-size:15px;color:var(--text-sub);line-height:1.8}
.highlight-side{padding:24px;display:flex;flex-direction:column;gap:12px;height:100%}
@media (min-width:1024px){.highlight-side{padding:26px 28px}}
.highlight-side .card-title{font-size:18px}

/* ============ Flow ============ */
.flow-steps{
  display:grid;grid-template-columns:1fr;gap:18px;
  padding:26px;border-radius:var(--radius-lg);
  background:var(--bg-panel);border:1px solid var(--line);
}
@media (min-width:768px){.flow-steps{grid-template-columns:repeat(3,1fr);gap:0;padding:32px 36px}}
.step{position:relative;display:flex;gap:16px;align-items:flex-start;padding:6px 0}
@media (min-width:768px){.step{padding:0 24px}}
.step-dot{
  width:32px;height:32px;flex:0 0 32px;border-radius:50%;
  border:1px solid var(--brand);color:var(--brand);
  display:grid;place-items:center;
  font-family:var(--font-mono);font-size:13px;font-weight:700;
  background:rgba(53,230,192,.08);
}
.step.is-done .step-dot{background:var(--brand);color:#04120E;box-shadow:0 0 22px -6px rgba(53,230,192,.9)}
.step-title{font-size:16px;font-weight:700;line-height:1.5}
.step-desc{font-size:14px;color:var(--text-sub);margin-top:4px}
.step:not(:last-child)::after{
  content:"";position:absolute;left:15px;top:38px;bottom:-6px;width:1px;background:var(--line);
}
@media (min-width:768px){
  .step:not(:last-child)::after{left:auto;right:0;top:16px;bottom:auto;width:1px;height:24px}
}
.split{
  display:grid;grid-template-columns:1fr;gap:28px;align-items:center;margin-top:32px;
}
@media (min-width:900px){.split{grid-template-columns:5fr 7fr;gap:44px;margin-top:44px}}
.split.reverse .split-media{order:2}
.split.reverse .split-body{order:1}
.split-media{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card)}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;transition:transform .5s var(--ease)}
.split-media:hover img{transform:scale(1.03)}
.split-body h3{font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.4}
.checklist{margin-top:18px;display:grid;gap:12px}
.checklist li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text-sub);line-height:1.75;
  padding:10px 14px;border-radius:12px;border:1px solid transparent;
  transition:background .22s var(--ease), border-color .22s var(--ease);
}
.checklist li:hover{background:rgba(255,255,255,.03);border-color:var(--line)}
.checklist li::before{
  content:"";width:8px;height:8px;flex:0 0 8px;margin-top:9px;
  background:var(--brand);border-radius:2px;
  box-shadow:0 0 10px rgba(53,230,192,.7);
}

/* ============ News (CMS) ============ */
.news-toolbar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.news-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(2,1fr);gap:24px}}
.news-card{display:flex;flex-direction:column}
.news-cover{position:relative;display:block;aspect-ratio:16/9;overflow:hidden}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.03)}
.news-cover .badge{position:absolute;left:16px;top:16px;z-index:2;background:rgba(6,11,18,.82)}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body .card-title{font-size:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-excerpt{
  font-size:14px;color:var(--text-sub);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-dim);
}
.news-foot .read{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:gap .22s var(--ease)}
.news-card:hover .news-foot .read{gap:10px}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:220px;padding:36px 20px;text-align:center;
  border:1px dashed var(--line-strong);border-radius:var(--radius-card);
  background:rgba(255,255,255,.02);color:var(--text-sub);font-size:15px;
}
.empty-state svg{width:44px;height:44px;color:var(--text-dim)}
.news-more{display:flex;justify-content:center;margin-top:34px}

/* ============ Proof ============ */
.proof-bar{
  display:grid;grid-template-columns:1fr;gap:20px;
  padding:26px 24px;border-radius:var(--radius-lg);
  background:var(--glass);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line-strong);
}
@media (min-width:768px){.proof-bar{grid-template-columns:repeat(3,1fr);gap:0;padding:30px 36px}}
.proof-item{text-align:left;padding:0}
@media (min-width:768px){.proof-item{padding:0 24px}.proof-item:not(:first-child){border-left:1px solid var(--line)}}
.proof-num{
  font-family:var(--font-mono);font-size:clamp(26px,3.6vw,38px);font-weight:700;
  color:var(--brand);line-height:1.1;
  text-shadow:0 0 26px rgba(53,230,192,.55);
}
.proof-label{font-size:14px;color:var(--text-sub);margin-top:6px}
.quote-grid{display:grid;grid-template-columns:1fr;gap:22px;margin-top:26px}
@media (min-width:900px){.quote-grid{grid-template-columns:repeat(2,1fr)}}
.quote-card{padding:26px;border-radius:var(--radius-card);background:var(--bg-panel);border:1px solid var(--line);box-shadow:var(--shadow-card)}
.quote-mark{font-family:Georgia,serif;font-size:34px;line-height:1;color:var(--brand);opacity:.55}
.quote-text{font-size:15px;color:var(--text-sub);line-height:1.85;margin-top:10px}
.quote-meta{display:flex;align-items:center;gap:10px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-dim)}
.quote-avatar{
  width:30px;height:30px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--brand);font-size:12px;font-family:var(--font-mono);
  background:rgba(53,230,192,.08);
}

/* ============ FAQ ============ */
.faq-wrap{
  border-radius:var(--radius-lg);border:1px solid var(--line-strong);
  background:var(--glass);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  color:var(--text);font-size:16px;font-weight:600;line-height:1.6;
  transition:color .22s var(--ease), background .22s var(--ease);
  position:relative;
}
@media (min-width:768px){.faq-q{padding:22px 28px}}
.faq-q:hover{color:var(--brand);background:rgba(255,255,255,.03)}
.faq-ico{
  flex:0 0 22px;width:22px;height:22px;position:relative;
  transition:transform .24s var(--ease);color:var(--brand);
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-ico::before{left:0;right:0;top:10px;height:2px}
.faq-ico::after{top:0;bottom:0;left:10px;width:2px;transition:opacity .2s var(--ease)}
.faq-item.is-open .faq-ico{transform:rotate(180deg)}
.faq-item.is-open .faq-ico::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{
  padding:0 22px 20px 22px;font-size:15px;color:var(--text-sub);line-height:1.85;
  border-left:3px solid transparent;
}
@media (min-width:768px){.faq-a-inner{padding:0 28px 22px 28px}}
.faq-item.is-open .faq-a-inner{border-left-color:var(--brand)}
.faq-item.is-open .faq-q{color:var(--brand)}

/* ============ CTA band ============ */
.cta-band{
  display:none;
}
@media (min-width:1024px){
  .cta-band{
    display:flex;align-items:center;justify-content:space-between;gap:32px;
    padding:34px 40px;border-radius:var(--radius-lg);
    background:linear-gradient(120deg, rgba(53,230,192,.14), rgba(12,21,34,.9) 55%);
    border:1px solid rgba(53,230,192,.30);
    box-shadow:var(--shadow-card);
  }
}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.35}
.cta-band p{color:var(--text-sub);font-size:15px;margin-top:8px}

/* ============ Sticky mobile bar ============ */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(17,30,47,.96);
  border-top:1px solid rgba(53,230,192,.32);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 -18px 40px -24px rgba(0,0,0,.95);
}
.sticky-bar span{font-size:13px;color:var(--text-sub);line-height:1.5}
@media (min-width:1024px){.sticky-bar{display:none}body{padding-bottom:0}}

/* ============ Footer ============ */
.site-footer{
  margin-top:56px;background:var(--bg-raise);
  border-top:1px solid var(--line);position:relative;z-index:1;
}
@media (min-width:1024px){.site-footer{margin-top:104px}}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:34px;padding:48px 0 34px;
}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:36px;padding:60px 0 40px}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand .brand{margin-bottom:16px}
.footer-text{font-size:14px;color:var(--text-sub);line-height:1.85;max-width:34ch}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text-sub)}
.footer-col a:hover{color:var(--brand)}
.footer-note{font-size:13px;color:var(--text-dim);line-height:1.9}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 calc(20px + env(safe-area-inset-bottom));
  display:flex;flex-direction:column;gap:10px;
  font-size:13px;color:var(--text-dim);
}
@media (min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}
.footer-bottom a{color:var(--text-sub)}
.footer-bottom a:hover{color:var(--brand)}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;
  }
  .card:hover,.btn:hover,.highlight-main:hover .thumb img,.news-card:hover .news-cover img,.split-media:hover img{transform:none !important}
}

/* roulang page: article */
:root{
  --bg-deep:#060B12;
  --bg-panel:#0C1522;
  --bg-raise:#111E2F;
  --glass:rgba(255,255,255,.06);
  --line:rgba(126,180,255,.14);
  --line-strong:rgba(126,180,255,.28);
  --brand:#35E6C0;
  --brand-deep:#12A98C;
  --accent:#FFB84D;
  --text:#EAF2FF;
  --text-sub:#A3B4CB;
  --text-dim:#6E819A;
  --radius-card:18px;
  --radius-big:24px;
  --radius-img:16px;
  --radius-input:12px;
  --shadow-card:0 24px 60px -32px rgba(0,0,0,.85);
  --shadow-hover:0 30px 70px -30px rgba(0,0,0,.9);
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-bottom:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg-deep);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0 0 auto 0;
  height:800px;
  background:radial-gradient(60% 70% at 22% 0%,rgba(53,230,192,.10),transparent 70%),
             radial-gradient(50% 60% at 85% 8%,rgba(255,184,77,.06),transparent 72%);
  pointer-events:none;
  z-index:0;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(126,180,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(126,180,255,.03) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand)}
button{font-family:inherit}
ul,ol{margin:0;padding:0}
p{margin:0}
h1,h2,h3,h4{margin:0;line-height:1.3}
::selection{background:rgba(53,230,192,.28);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
  position:relative;
  z-index:2;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background-color .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
  text-align:center;
}
.btn-primary{
  background:var(--brand);
  color:#04211C;
  box-shadow:0 0 0 1px rgba(53,230,192,.4),0 12px 30px -12px rgba(53,230,192,.7);
}
.btn-primary:hover{
  color:#04211C;
  background:#4df0cd;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(53,230,192,.55),0 18px 40px -12px rgba(53,230,192,.85);
}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:var(--line-strong);
}
.btn-ghost:hover{
  color:var(--text);
  border-color:var(--brand);
  box-shadow:inset 0 0 22px -12px rgba(53,230,192,.9);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 20px;font-size:14px}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  height:72px;
  display:flex;
  align-items:center;
  background:rgba(6,11,18,.74);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:height .26s var(--ease),background-color .26s var(--ease),box-shadow .26s var(--ease);
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(6,11,18,.94);
  border-bottom-color:var(--line-strong);
  box-shadow:0 14px 34px -24px rgba(53,230,192,.75);
}
.header-inner{
  width:100%;
  max-width:1320px;
  margin:0 auto;
  padding:0 32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  text-decoration:none;
  flex:0 0 auto;
}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:12px;
  background:radial-gradient(circle at 30% 20%,rgba(53,230,192,.22),rgba(17,30,47,.9));
  border:1px solid var(--line-strong);
  box-shadow:0 0 20px -10px rgba(53,230,192,.9);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.02em}
.brand-text span{font-size:11px;color:var(--text-sub);letter-spacing:.16em}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  padding:9px 14px;
  border-radius:10px;
  font-size:15px;
  color:var(--text-sub);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:1px;
  height:2px;border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(53,230,192,.9);
}
.nav-cta{margin-left:14px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  background:var(--bg-raise);
  cursor:pointer;
  padding:0;
  align-items:center;
  justify-content:center;
  gap:4px;
  flex-direction:column;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--text);
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 主体 ---------- */
.article-main{padding:52px 0 96px;position:relative;z-index:2}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  list-style:none;
  font-size:14px;
  color:var(--text-dim);
  margin-bottom:34px;
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:rgba(126,180,255,.32)}
.breadcrumb a{color:var(--text-sub)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current{color:var(--text-dim);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:52px;
  align-items:start;
}
.article-head{padding-bottom:26px;border-bottom:1px solid var(--line);margin-bottom:38px}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  letter-spacing:.08em;
  padding:4px 10px;
  border-radius:6px;
  color:var(--brand);
  background:rgba(53,230,192,.1);
  border:1px solid rgba(53,230,192,.3);
}
.badge-accent{
  color:var(--accent);
  background:rgba(255,184,77,.1);
  border-color:rgba(255,184,77,.34);
}
.article-title{
  font-size:clamp(28px,3.6vw,40px);
  font-weight:800;
  line-height:1.28;
  letter-spacing:-.01em;
  margin:18px 0 20px;
  max-width:820px;
  word-break:break-word;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 20px;
  font-size:14px;
  color:var(--text-sub);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta .mono{font-family:var(--font-mono);font-size:13px;color:var(--text-sub);letter-spacing:.02em}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-dim)}

/* ---------- 正文 ---------- */
.article-body{
  counter-reset:sec;
  max-width:760px;
  font-size:17px;
  line-height:1.85;
  color:#DCE7F5;
  word-break:break-word;
}
.article-body p{margin:0 0 22px}
.article-body h2{
  counter-increment:sec;
  display:flex;
  align-items:baseline;
  gap:12px;
  font-size:clamp(21px,2.4vw,28px);
  font-weight:700;
  line-height:1.4;
  color:var(--text);
  margin:48px 0 18px;
}
.article-body h2::before{
  content:counter(sec,decimal-leading-zero);
  font-family:var(--font-mono);
  font-size:14px;
  font-weight:600;
  color:var(--accent);
  letter-spacing:.06em;
  flex:0 0 auto;
}
.article-body h3{
  font-size:19px;
  font-weight:600;
  color:var(--text);
  margin:32px 0 12px;
}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px;color:var(--text)}
.article-body ul,
.article-body ol{margin:0 0 22px;padding-left:0;list-style:none}
.article-body ol{list-style:decimal;padding-left:24px}
.article-body ul>li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
}
.article-body ul>li::before{
  content:"";
  position:absolute;
  left:2px;top:12px;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 10px -2px rgba(53,230,192,.9);
}
.article-body ol>li{
  margin-bottom:10px;
  padding-left:6px;
}
.article-body ol>li::marker{color:var(--brand);font-family:var(--font-mono);font-size:14px}
.article-body li>ul{margin-top:10px}
.article-body a{
  color:var(--brand);
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
  text-decoration-color:rgba(53,230,192,.4);
  transition:text-decoration-color .2s var(--ease),color .2s var(--ease);
}
.article-body a:hover{text-decoration-color:var(--brand)}
.article-body blockquote{
  margin:26px 0;
  padding:18px 24px;
  background:var(--bg-panel);
  border-left:3px solid var(--brand);
  border-radius:0 var(--radius-input) var(--radius-input) 0;
  color:var(--text-sub);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body code{
  font-family:var(--font-mono);
  font-size:.9em;
  padding:2px 6px;
  border-radius:6px;
  background:var(--bg-raise);
  border:1px solid var(--line);
  color:var(--brand);
}
.article-body pre{
  margin:26px 0;
  padding:20px 22px;
  overflow-x:auto;
  background:var(--bg-raise);
  border:1px solid var(--line);
  border-radius:var(--radius-input);
}
.article-body pre code{
  padding:0;border:0;background:transparent;color:#CFE1F5;font-size:14px;line-height:1.7;
}
.article-body img{
  width:100%;
  height:auto;
  border-radius:var(--radius-img);
  border:1px solid var(--line);
  margin:26px 0;
}
.article-body figure{margin:26px 0}
.article-body figure img{margin:0}
.article-body figcaption{
  margin-top:10px;
  text-align:center;
  font-size:13px;
  color:var(--text-dim);
}
.article-body hr{
  border:0;
  border-top:1px solid var(--line);
  margin:38px 0;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:26px 0;
  font-size:15px;
}
.article-body th{
  background:var(--bg-raise);
  color:var(--text);
  font-weight:600;
  text-align:left;
}
.article-body th,
.article-body td{
  padding:12px 14px;
  border-bottom:1px solid var(--line);
}
.article-body td:first-child,
.article-body th:first-child{font-weight:600;color:var(--text)}

/* 空状态 */
.empty-state{
  min-height:220px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  text-align:center;
  padding:40px 20px;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
}
.empty-state svg{width:46px;height:46px;stroke:var(--text-dim)}
.empty-state p{color:var(--text-sub);font-size:15px;margin:0}

/* ---------- 文中 CTA 卡 ---------- */
.article-cta{
  max-width:760px;
  margin:44px 0 0;
  padding:26px 28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  border-radius:var(--radius-card);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(53,230,192,.26);
  box-shadow:0 0 0 1px rgba(255,255,255,.03) inset;
}
.article-cta .cta-copy{max-width:420px}
.article-cta strong{display:block;font-size:17px;font-weight:700;margin-bottom:6px}
.article-cta span{font-size:14px;color:var(--text-sub)}

/* ---------- 确认清单 ---------- */
.checklist{
  max-width:760px;
  margin-top:56px;
  padding:30px 30px 26px;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}
.checklist h2{
  font-size:clamp(20px,2.2vw,24px);
  font-weight:700;
  margin-bottom:18px;
}
.checklist ol{list-style:none;counter-reset:ck}
.checklist li{
  counter-increment:ck;
  position:relative;
  padding:0 0 16px 44px;
  color:var(--text-sub);
  font-size:15px;
  line-height:1.75;
}
.checklist li:last-child{padding-bottom:0}
.checklist li::before{
  content:counter(ck,decimal-leading-zero);
  position:absolute;
  left:0;top:2px;
  width:30px;height:30px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid rgba(53,230,192,.45);
  color:var(--brand);
  font-family:var(--font-mono);
  font-size:12px;
}
.checklist li strong{display:block;color:var(--text);font-size:15px;font-weight:600;margin-bottom:2px}

/* ---------- 相关推荐 ---------- */
.related{max-width:760px;margin-top:64px}
.section-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  margin-bottom:22px;
}
.section-head h2{font-size:clamp(20px,2.2vw,24px);font-weight:700}
.section-head .link-more{font-size:14px;color:var(--text-sub);transition:color .2s var(--ease)}
.section-head .link-more:hover{color:var(--brand)}
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.rel-card{
  display:flex;
  flex-direction:column;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.rel-card:hover{
  transform:translateY(-2px);
  border-color:rgba(53,230,192,.35);
  box-shadow:var(--shadow-hover);
}
.rel-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-raise);
}
.rel-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-thumb .badge{
  position:absolute;
  top:10px;left:10px;
  background:rgba(6,11,18,.78);
  backdrop-filter:blur(6px);
}
.rel-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{
  font-size:16px;
  font-weight:600;
  line-height:1.55;
  color:var(--text);
  transition:color .2s var(--ease);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-card:hover .rel-body h3{color:var(--brand)}
.rel-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-dim);
  font-family:var(--font-mono);
}
.rel-foot .arrow{color:var(--brand)}

/* ---------- 文末导航 ---------- */
.article-foot-nav{
  max-width:760px;
  margin-top:44px;
  padding-top:26px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.back-link{font-size:15px;color:var(--text-sub);display:inline-flex;align-items:center;gap:6px}
.back-link:hover{color:var(--brand)}

/* ---------- 侧栏 ---------- */
.sidebar{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.toc-card{
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px 22px 24px;
  box-shadow:var(--shadow-card);
}
.side-title{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--text-dim);
  margin-bottom:14px;
  font-weight:600;
}
.toc-list{list-style:none;counter-reset:toc}
.toc-list li{counter-increment:toc;margin-bottom:4px}
.toc-list a{
  display:flex;
  gap:10px;
  padding:8px 10px;
  border-radius:10px;
  font-size:14px;
  line-height:1.6;
  color:var(--text-sub);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.toc-list a::before{
  content:counter(toc,decimal-leading-zero);
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--accent);
  flex:0 0 auto;
  opacity:.8;
}
.toc-list a:hover{background:rgba(255,255,255,.04);color:var(--text)}
.toc-empty{font-size:14px;color:var(--text-dim);line-height:1.7}
.toc-more{
  margin-top:18px;
  padding-top:18px;
  border-top:1px solid var(--line);
}
.toc-more h3{font-size:13px;letter-spacing:.14em;color:var(--text-dim);font-weight:600;margin-bottom:10px}
.toc-more a{
  display:block;
  padding:8px 10px;
  border-radius:10px;
  font-size:14px;
  color:var(--text-sub);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.toc-more a:hover{background:rgba(255,255,255,.04);color:var(--brand)}
.side-note{
  padding:18px 20px;
  border-radius:var(--radius-card);
  border:1px dashed var(--line-strong);
  font-size:13px;
  line-height:1.75;
  color:var(--text-sub);
}
.side-note strong{display:block;color:var(--accent);font-size:13px;margin-bottom:6px;letter-spacing:.06em}

/* ---------- 页脚前 CTA ---------- */
.prefooter{padding:0 0 72px;position:relative;z-index:2}
.prefooter-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  padding:36px 40px;
  border-radius:var(--radius-big);
  background:linear-gradient(120deg,rgba(17,30,47,.95),rgba(12,21,34,.95));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card);
}
.prefooter-inner h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;margin-bottom:8px}
.prefooter-inner p{font-size:15px;color:var(--text-sub);max-width:560px}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-raise);
  border-top:1px solid var(--line);
  padding:64px 0 0;
  position:relative;
  z-index:2;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand .brand{margin-bottom:16px}
.footer-text{font-size:14px;line-height:1.85;color:var(--text-sub);max-width:340px}
.footer-col h4{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--text);
  font-weight:600;
  margin-bottom:16px;
}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-sub);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-note{font-size:13px;line-height:1.85;color:var(--text-dim)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-dim);
}

/* ---------- 移动端底部条 ---------- */
.mobile-bar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  height:64px;
  padding:0 16px calc(0px + env(safe-area-inset-bottom));
  align-items:center;
  justify-content:space-between;
  gap:14px;
  background:rgba(9,16,26,.96);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line-strong);
  box-shadow:0 -12px 30px -22px rgba(0,0,0,.9);
}
.mobile-bar span{font-size:13px;color:var(--text-sub);line-height:1.4}
.mobile-bar .btn{flex:0 0 auto;padding:11px 20px;font-size:14px}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 24px}
  .header-inner{padding:0 24px}
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;
    left:0;right:0;
    top:72px;
    margin:0;
    padding:20px 24px 26px;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    background:rgba(9,16,26,.98);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line-strong);
    max-height:calc(100vh - 72px);
    overflow-y:auto;
    display:none;
    box-shadow:0 30px 60px -30px rgba(0,0,0,.95);
  }
  .main-nav.is-open{display:flex}
  .nav-link{padding:14px 12px;font-size:16px;border-radius:12px}
  .nav-link.is-active{background:rgba(53,230,192,.1)}
  .nav-link.is-active::after{display:none}
  .nav-cta{width:100%;margin:12px 0 0;padding:15px 24px;font-size:16px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .sidebar{display:none}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .mobile-bar{display:flex}
  body{padding-bottom:80px}
  .prefooter{padding-bottom:48px}
}
@media (max-width:639px){
  .container{padding:0 20px}
  .header-inner{padding:0 20px}
  .brand-text strong{font-size:15px}
  .brand-text span{font-size:10px;letter-spacing:.12em}
  .brand-mark{width:34px;height:34px;border-radius:10px}
  .site-header{height:64px}
  .site-header.is-scrolled{height:58px}
  .main-nav{top:64px}
  .article-main{padding:34px 0 64px}
  .breadcrumb{font-size:13px;margin-bottom:24px}
  .breadcrumb .current{white-space:normal}
  .article-head{padding-bottom:20px;margin-bottom:26px}
  .article-title{margin:14px 0 16px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{margin:36px 0 14px}
  .article-cta{padding:22px;flex-direction:column;align-items:flex-start}
  .article-cta .btn{width:100%}
  .checklist{padding:24px 20px}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .article-foot-nav{flex-direction:column;align-items:flex-start}
  .prefooter-inner{padding:26px 22px}
  .prefooter-inner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .mobile-bar span{max-width:46%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .rel-card:hover{transform:none}
  .btn:hover{transform:none}
  .rel-card:hover .rel-thumb img{transform:none}
}

/* roulang page: category1 */
:root{
  --bg-deep:#060B12;
  --bg-panel:#0C1522;
  --bg-raise:#111E2F;
  --glass:rgba(255,255,255,.06);
  --line:rgba(126,180,255,.14);
  --line-strong:rgba(126,180,255,.28);
  --brand:#35E6C0;
  --brand-deep:#12A98C;
  --accent:#FFB84D;
  --text:#EAF2FF;
  --text-sub:#A3B4CB;
  --text-dim:#6E819A;
  --radius-card:18px;
  --radius-lg:24px;
  --radius-btn:999px;
  --radius-img:16px;
  --radius-input:12px;
  --shadow-card:0 24px 60px -32px rgba(0,0,0,.85);
  --shadow-card-hover:0 30px 70px -30px rgba(0,0,0,.9);
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
  --section-gap:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 800px at 50% -300px,rgba(53,230,192,.08),transparent 70%),
    linear-gradient(to right,rgba(126,180,255,.03) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(126,180,255,.03) 1px,transparent 1px);
  background-size:auto,64px 64px,64px 64px;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:#6df3d6}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px;padding-left:20px}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
.grid-container{max-width:1200px!important;padding-left:20px!important;padding-right:20px!important;position:relative;z-index:1}
@media(min-width:1024px){
  .container,.grid-container{padding-left:32px!important;padding-right:32px!important}
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,11,18,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(6,11,18,.92);border-bottom-color:var(--line-strong);box-shadow:0 20px 50px -40px rgba(53,230,192,.9)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;transition:height .25s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex-shrink:0}
.brand:hover{color:var(--text)}
.brand-mark{width:36px;height:36px;display:grid;place-items:center;border-radius:11px;border:1px solid var(--line-strong);background:rgba(53,230,192,.08);flex-shrink:0}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.02em}
.brand-text span{font-size:11px;color:var(--text-sub);letter-spacing:.16em}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;display:inline-block;
  padding:9px 14px;border-radius:999px;
  font-size:15px;color:var(--text-sub);text-decoration:none;
  transition:color .22s var(--ease),background .22s var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(53,230,192,.85);
}
.nav-cta{margin-left:10px;flex-shrink:0}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-strong);
  color:var(--text);font-size:16px;cursor:pointer;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.nav-toggle:hover{border-color:var(--brand);background:rgba(53,230,192,.1)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;line-height:1.2;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),filter .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-primary{
  background:var(--brand);color:#04211B;
  box-shadow:0 0 0 1px rgba(53,230,192,.4),0 12px 30px -12px rgba(53,230,192,.7);
}
.btn-primary:hover{
  color:#04211B;filter:brightness(1.08);transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(53,230,192,.5),0 18px 42px -12px rgba(53,230,192,.85);
}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;border-color:var(--line-strong);color:var(--text);
}
.btn-ghost:hover{
  color:var(--text);border-color:var(--brand);
  box-shadow:inset 0 0 26px rgba(53,230,192,.14);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ---------- banner ---------- */
.page-banner{
  position:relative;overflow:hidden;
  padding:40px 0 56px;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(17,30,47,.55),rgba(6,11,18,0));
}
.page-banner-media{
  position:absolute;top:0;right:0;width:60%;height:100%;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  opacity:.4;pointer-events:none;
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 58%);
  mask-image:linear-gradient(90deg,transparent 0%,#000 58%);
}
.page-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(6,11,18,.35),rgba(6,11,18,.9));
}
.banner-copy{position:relative;z-index:2;max-width:660px}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0 0 18px;padding:0;font-size:13px;color:var(--text-sub)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--text-dim)}
.breadcrumb a{color:var(--text-sub)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb li[aria-current] {color:var(--text-dim)}
.page-banner h1{
  font-size:clamp(30px,4.4vw,46px);
  font-weight:800;line-height:1.18;letter-spacing:-.01em;
  margin-bottom:18px;max-width:660px;
}
.page-banner h1 .hl{color:var(--brand)}
.banner-lead{font-size:16px;line-height:1.85;color:var(--text-sub);max-width:600px;margin-bottom:26px}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- section base ---------- */
.section{padding:var(--section-gap) 0;position:relative}
.section-tight{padding-top:64px}
.section-head{max-width:760px;margin-bottom:40px}
.section-num{
  display:inline-block;font-family:var(--font-mono);font-size:13px;
  letter-spacing:.18em;color:var(--accent);margin-bottom:12px;
}
.section-head h2{font-size:clamp(22px,2.8vw,34px);font-weight:700;margin-bottom:14px}
.section-sub{font-size:15.5px;color:var(--text-sub);line-height:1.85;margin:0}

/* ---------- note panel ---------- */
.note-panel{
  display:grid;grid-template-columns:auto 1fr;gap:22px;align-items:start;
  background:var(--bg-panel);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:26px 24px;
  box-shadow:var(--shadow-card);position:relative;overflow:hidden;
}
.note-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(53,230,192,.5),rgba(126,180,255,.1),transparent);
}
.note-index{
  font-family:var(--font-mono);font-size:14px;color:var(--accent);
  border:1px solid rgba(255,184,77,.35);background:rgba(255,184,77,.08);
  border-radius:10px;padding:8px 12px;line-height:1;flex-shrink:0;
}
.note-body h2{font-size:20px;margin-bottom:12px}
.note-body p{font-size:15.5px;color:var(--text-sub);line-height:1.85;margin-bottom:12px}
.note-body p:last-child{margin-bottom:0}
.note-body strong{color:var(--text)}

/* ---------- flow layout ---------- */
.flow-layout{display:grid;grid-template-columns:1fr;gap:30px}
.step-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.step-item{
  display:grid;grid-template-columns:auto 1fr;gap:18px;
  background:var(--bg-panel);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;
  box-shadow:var(--shadow-card);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.step-item:hover{transform:translateY(-2px);border-color:rgba(53,230,192,.35);box-shadow:var(--shadow-card-hover)}
.step-index{
  width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;flex-shrink:0;
  font-family:var(--font-mono);font-size:13px;
  color:var(--brand);background:rgba(53,230,192,.08);
  border:1px solid rgba(53,230,192,.4);
}
.step-body h3{font-size:17px;margin-bottom:8px}
.step-body p{margin:0;font-size:15px;line-height:1.8;color:var(--text-sub)}
.step-tip{display:block;margin-top:10px;font-size:13px;color:var(--text-dim);line-height:1.7}
.flow-side{display:flex;flex-direction:column;gap:20px}
.side-figure{
  border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:16/11;background:var(--bg-raise);
}
.side-figure img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.side-figure:hover img{transform:scale(1.03)}
.side-card{
  background:var(--bg-raise);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;
}
.side-card h3{font-size:16px;margin-bottom:12px}
.side-card ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.side-card li{
  position:relative;padding-left:16px;font-size:14.5px;
  color:var(--text-sub);line-height:1.7;
}
.side-card li::before{
  content:"";position:absolute;left:0;top:10px;
  width:4px;height:4px;border-radius:1px;background:var(--brand);
}

/* ---------- check cards ---------- */
.check-grid{display:grid;grid-template-columns:1fr;gap:20px}
.check-card{
  background:var(--bg-panel);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px 24px;
  box-shadow:var(--shadow-card);position:relative;overflow:hidden;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.check-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(53,230,192,.45),transparent 70%);
}
.check-card:hover{transform:translateY(-2px);border-color:rgba(53,230,192,.35);box-shadow:var(--shadow-card-hover)}
.check-card .num{font-family:var(--font-mono);font-size:13px;color:var(--accent);letter-spacing:.14em;display:block;margin-bottom:14px}
.check-card h3{font-size:18px;margin-bottom:10px}
.check-card p{font-size:15px;color:var(--text-sub);line-height:1.8;margin:0 0 16px}
.text-link{font-size:14px;color:var(--brand);border-bottom:1px solid transparent;transition:border-color .22s var(--ease),color .22s var(--ease)}
.text-link:hover{border-bottom-color:var(--brand)}

/* ---------- split list ---------- */
.split{display:grid;grid-template-columns:1fr;gap:32px}
.split-head h2{font-size:clamp(22px,2.8vw,32px);margin-bottom:16px}
.split-head p{font-size:15.5px;color:var(--text-sub);line-height:1.85;max-width:520px}
.plain-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.plain-list li{
  border-bottom:1px solid var(--line);
  padding:18px 14px 18px 18px;
  transition:background .22s var(--ease);
}
.plain-list li:first-child{border-top:1px solid var(--line)}
.plain-list li:hover{background:rgba(255,255,255,.03)}
.plain-list strong{display:block;font-size:16px;margin-bottom:6px;color:var(--text)}
.plain-list span{font-size:14.5px;color:var(--text-sub);line-height:1.75}

/* ---------- faq ---------- */
.faq-wrap{
  border:1px solid var(--line);border-radius:var(--radius-lg);
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  overflow:hidden;
}
.faq-item+.faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:none;border:0;cursor:pointer;text-align:left;
  color:var(--text);font-size:16px;font-weight:600;line-height:1.6;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.faq-q:hover{color:var(--brand);background:rgba(255,255,255,.03)}
.faq-icon{
  flex-shrink:0;width:24px;height:24px;display:grid;place-items:center;
  border-radius:50%;border:1px solid var(--line-strong);
  color:var(--text-sub);font-size:13px;line-height:1;
  transition:transform .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--brand);border-color:rgba(53,230,192,.55)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{
  padding:0 24px 22px 24px;margin-left:24px;
  border-left:3px solid transparent;
  padding-left:18px;
  font-size:15px;line-height:1.8;color:var(--text-sub);
  transition:border-color .25s var(--ease);
}
.faq-item.is-open .faq-a-inner{border-left-color:var(--brand)}

/* ---------- cta band ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  border:1px solid var(--line-strong);border-radius:var(--radius-lg);
  padding:34px 28px;
  background:linear-gradient(135deg,rgba(53,230,192,.13),rgba(255,184,77,.06) 60%,rgba(12,21,34,.6));
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(20px,2.4vw,28px);margin-bottom:10px}
.cta-band p{margin:0;font-size:15px;color:var(--text-sub);max-width:560px}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-raise);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;margin-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-text{font-size:14px;line-height:1.85;color:var(--text-sub);margin:0;max-width:360px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col li a{font-size:14px;color:var(--text-sub);transition:color .22s var(--ease),padding-left .22s var(--ease)}
.footer-col li a:hover{color:var(--brand);padding-left:4px}
.footer-note{font-size:13.5px;line-height:1.8;color:var(--text-sub);margin:0}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-dim);
}

/* ---------- mobile bar ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:75;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(9,16,26,.94);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-top:1px solid var(--line-strong);
}
.mobile-bar span{font-size:13px;color:var(--text-sub);line-height:1.5}
.mobile-bar .btn{flex-shrink:0;padding:11px 20px;font-size:14px}

/* ---------- responsive ---------- */
@media(max-width:1023px){
  :root{--section-gap:72px}
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:fixed;top:0;left:0;right:0;bottom:0;
    z-index:78;
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:10px;
    padding:92px 24px 40px;
    background:rgba(6,11,18,.98);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    transform:translateX(100%);
    transition:transform .3s var(--ease);
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{
    font-size:17px;padding:15px 18px;border-radius:12px;
    border:1px solid var(--line);background:rgba(255,255,255,.02);
  }
  .nav-link.is-active{border-color:rgba(53,230,192,.45);box-shadow:0 0 0 1px rgba(53,230,192,.2) inset}
  .nav-link.is-active::after{display:none}
  .nav-cta{margin:18px 0 0;width:100%;padding:16px;font-size:16px;box-shadow:0 0 0 1px rgba(53,230,192,.4),0 16px 40px -14px rgba(53,230,192,.8)}
  body{padding-bottom:80px}
  .page-banner-media{width:100%;opacity:.22}
  .page-banner::after{background:linear-gradient(180deg,rgba(6,11,18,.7),rgba(6,11,18,.95))}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(min-width:768px){
  .check-grid{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}
}
@media(min-width:1024px){
  .flow-layout{grid-template-columns:1.15fr .85fr;gap:40px}
  .split{grid-template-columns:1fr 1.15fr;gap:56px;align-items:start}
  .mobile-bar{display:none}
  .note-panel{padding:32px 34px;gap:28px}
  .step-item{padding:24px 26px}
  .cta-band{padding:44px 40px}
  .page-banner{padding:56px 0 72px}
}
@media(max-width:639px){
  .banner-actions .btn{width:100%}
  .note-panel{grid-template-columns:1fr;gap:16px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .footer-grid{gap:28px}
  .page-banner h1{font-size:clamp(26px,7.4vw,34px)}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  .btn:hover,.check-card:hover,.step-item:hover{transform:none}
  .side-figure:hover img{transform:none}
}

/* roulang page: category2 */
:root{
  --bg-deep:#060B12;
  --bg-panel:#0C1522;
  --bg-raise:#111E2F;
  --glass:rgba(255,255,255,0.06);
  --line:rgba(126,180,255,0.14);
  --line-strong:rgba(126,180,255,0.28);
  --brand:#35E6C0;
  --brand-deep:#12A98C;
  --accent:#FFB84D;
  --text:#EAF2FF;
  --text-sub:#A3B4CB;
  --text-dim:#6E819A;
  --radius-card:18px;
  --radius-lg:24px;
  --radius-img:16px;
  --radius-input:12px;
  --shadow-card:0 24px 60px -32px rgba(0,0,0,.85);
  --shadow-hover:0 30px 70px -30px rgba(0,0,0,.9);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,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(--bg-deep);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-cn);
  margin:0;
  color:var(--text);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-0.01em;
}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),opacity .22s var(--ease)}
a:hover{color:var(--brand)}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:inherit}
::selection{background:rgba(53,230,192,.28);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

.page-glow{
  position:fixed;
  inset:0 0 auto 0;
  height:800px;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 420px at 18% 0%, rgba(53,230,192,.10), transparent 70%),
    radial-gradient(720px 460px at 82% 6%, rgba(18,169,140,.08), transparent 72%);
}
.page-grid{
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:88px 88px;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
  position:relative;
  z-index:1;
}
.grid-container{max-width:1200px;padding-left:20px;padding-right:20px}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,11,18,.72);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,11,18,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:rgba(53,230,192,.28);
  box-shadow:0 18px 40px -30px rgba(0,0,0,.95);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height .24s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:rgba(53,230,192,.08);
  border:1px solid rgba(53,230,192,.30);
  flex:0 0 auto;
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.02em}
.brand-text span{font-size:11px;color:var(--text-sub);letter-spacing:.16em;font-family:var(--font-mono)}
.main-nav{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  border-radius:999px;
  font-size:14.5px;
  color:var(--text-sub);
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link.is-active{color:var(--text);background:rgba(53,230,192,.10)}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(53,230,192,.9);
}
.nav-cta{margin-left:10px;flex:0 0 auto}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  align-items:center;justify-content:center;
  flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),filter .22s var(--ease);
}
.btn-primary{
  background:var(--brand);
  color:#04211B;
  box-shadow:0 0 0 1px rgba(53,230,192,.4),0 12px 30px -12px rgba(53,230,192,.7);
}
.btn-primary:hover{
  color:#04211B;
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(53,230,192,.55),0 18px 40px -12px rgba(53,230,192,.85);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(53,230,192,.5),0 8px 20px -14px rgba(53,230,192,.8)}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border:1px solid var(--line-strong);
}
.btn-ghost:hover{
  color:var(--text);
  border-color:var(--brand);
  box-shadow:inset 0 0 22px rgba(53,230,192,.12);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.link-more{
  font-size:14px;
  color:var(--brand);
  border-bottom:1px solid transparent;
}
.link-more:hover{border-bottom-color:rgba(53,230,192,.6)}

/* ---------- badge ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  line-height:1.4;
  padding:4px 10px;
  border-radius:6px;
  background:rgba(53,230,192,.10);
  border:1px solid rgba(53,230,192,.30);
  color:var(--brand);
  letter-spacing:.04em;
  white-space:nowrap;
}
.badge-accent{
  background:rgba(255,184,77,.10);
  border-color:rgba(255,184,77,.32);
  color:var(--accent);
}

/* ---------- banner ---------- */
.page-banner{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:var(--bg-deep);
}
.banner-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:right center;
  opacity:.40;
  pointer-events:none;
}
.page-banner::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(96deg, rgba(6,11,18,.97) 26%, rgba(6,11,18,.82) 58%, rgba(6,11,18,.55) 100%);
  pointer-events:none;
}
.banner-inner{
  position:relative;
  z-index:2;
  padding-top:36px;
  padding-bottom:48px;
  min-height:300px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:14px;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-dim);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:rgba(126,180,255,.35)}
.breadcrumb a{color:var(--text-sub)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current{color:var(--text-dim)}
.page-banner h1{
  font-size:clamp(28px,4vw,46px);
  font-weight:800;
  line-height:1.15;
  max-width:22em;
}
.page-banner h1 .hl{color:var(--brand)}
.banner-lead{
  font-size:17px;
  color:var(--text-sub);
  max-width:62ch;
  margin:0;
}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:8px}

/* ---------- section ---------- */
.section{padding:72px 0}
.section-tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-num{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.22em;
  color:var(--accent);
  margin-bottom:10px;
}
.section-title{
  font-size:clamp(22px,2.8vw,34px);
  font-weight:700;
  margin-bottom:12px;
}
.section-desc{color:var(--text-sub);font-size:16px;margin:0;max-width:70ch}

/* ---------- intro panel ---------- */
.intro-panel{
  display:grid;
  grid-template-columns:120px 1fr;
  gap:28px;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:32px;
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.intro-panel::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg, rgba(53,230,192,.55), rgba(53,230,192,0) 60%);
}
.intro-index{
  font-family:var(--font-mono);
  font-size:46px;
  line-height:1;
  color:var(--accent);
  letter-spacing:-0.02em;
}
.intro-panel h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:12px}
.intro-panel p{color:var(--text-sub);font-size:16px;max-width:72ch}
.intro-facts{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:20px;
}
.fact-chip{
  font-size:13px;
  color:var(--text-sub);
  padding:6px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  display:inline-flex;
  align-items:center;
  gap:7px;
}
.fact-chip::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 8px rgba(53,230,192,.8);
}

/* ---------- alert ---------- */
.alert-strip{
  display:grid;
  grid-template-columns:52px 1fr;
  gap:18px;
  align-items:flex-start;
  background:linear-gradient(90deg, rgba(255,184,77,.11), rgba(255,184,77,.02));
  border:1px solid rgba(255,184,77,.22);
  border-left:3px solid var(--accent);
  border-radius:var(--radius-card);
  padding:24px 26px;
  margin:28px 0;
}
.alert-icon{
  width:40px;height:40px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,184,77,.4);
  background:rgba(255,184,77,.10);
  color:var(--accent);
  font-family:var(--font-mono);
  font-weight:700;
  font-size:18px;
}
.alert-strip h3{font-size:17px;color:var(--accent);margin-bottom:8px}
.alert-strip p{color:var(--text-sub);font-size:15px;margin:0}

/* ---------- cards ---------- */
.cards-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{
  display:flex;
  flex-direction:column;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  position:relative;
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg, rgba(255,255,255,.22), rgba(255,255,255,0) 65%);
  z-index:2;
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(53,230,192,.35);
  box-shadow:var(--shadow-hover);
}
.card-media{
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-raise);
}
.card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{
  padding:24px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1 1 auto;
}
.card-title{font-size:18px;font-weight:600;line-height:1.4;transition:color .22s var(--ease)}
.card:hover .card-title{color:var(--brand)}
.card-text{
  font-size:14.5px;
  line-height:1.75;
  color:var(--text-sub);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin:0;
}
.card-foot{
  margin-top:auto;
  padding-top:14px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-dim);
}

/* ---------- checklist ---------- */
.check-layout{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:36px;
  align-items:center;
}
.check-list{counter-reset:step}
.check-item{
  display:grid;
  grid-template-columns:44px 1fr;
  gap:16px;
  padding:20px 0;
  border-bottom:1px solid var(--line);
}
.check-item:last-child{border-bottom:0}
.check-item::before{
  counter-increment:step;
  content:counter(step,decimal-leading-zero);
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--brand);
  width:40px;height:40px;
  border-radius:50%;
  border:1px solid rgba(53,230,192,.4);
  display:flex;align-items:center;justify-content:center;
  letter-spacing:.02em;
}
.check-item h3{font-size:17px;margin-bottom:6px}
.check-item p{color:var(--text-sub);font-size:15px;margin:0}
.check-visual{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
  aspect-ratio:4/3;
}
.check-visual img{width:100%;height:100%;object-fit:cover}

/* ---------- form ---------- */
.form-panel{
  display:grid;
  grid-template-columns:1fr 1.1fr;
  gap:36px;
  align-items:start;
}
.form-card{
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-card);
}
.field{margin-bottom:20px}
.field label{
  display:block;
  font-size:14px;
  color:var(--text-sub);
  margin-bottom:8px;
  letter-spacing:.02em;
}
.field select,
.field input,
.field textarea{
  width:100%;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-input);
  color:var(--text);
  padding:12px 14px;
  font-size:15px;
  line-height:1.6;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.field textarea{min-height:140px;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-sub) 50%),linear-gradient(135deg,var(--text-sub) 50%,transparent 50%);background-position:calc(100% - 20px) 22px,calc(100% - 14px) 22px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field select:focus,
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 2px rgba(53,230,192,.18);
  background:rgba(53,230,192,.04);
}
.field input::placeholder,
.field textarea::placeholder{color:var(--text-dim)}
.form-hint{font-size:13px;color:var(--text-dim);margin-top:12px}
.form-result{
  margin-top:16px;
  padding:14px 16px;
  border-radius:12px;
  border:1px solid rgba(53,230,192,.32);
  background:rgba(53,230,192,.08);
  color:var(--brand);
  font-size:14px;
}
.form-aside h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px}
.form-aside p{color:var(--text-sub);max-width:56ch}
.aside-list{margin-top:22px;display:grid;gap:12px}
.aside-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  color:var(--text-sub);
}
.aside-list li::before{
  content:"";
  width:6px;height:6px;
  margin-top:11px;
  flex:0 0 auto;
  border-radius:2px;
  background:var(--brand);
}

/* ---------- faq ---------- */
.faq{
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:8px 24px;
}
.faq-item{
  border-bottom:1px solid var(--line);
  border-left:3px solid transparent;
  padding-left:16px;
  transition:border-color .22s var(--ease);
}
.faq-item:last-child{border-bottom:0}
.faq-item.is-open{border-left-color:var(--brand)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  text-align:left;
  padding:20px 0;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  transition:color .22s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  position:relative;
  width:16px;height:16px;
  flex:0 0 auto;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
  transition:transform .26s var(--ease),opacity .26s var(--ease);
}
.faq-icon::before{top:7px;left:0;width:16px;height:2px}
.faq-icon::after{top:0;left:7px;width:2px;height:16px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-a p{
  font-size:15px;
  line-height:1.8;
  color:var(--text-sub);
  padding:0 0 20px;
  max-width:76ch;
}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--bg-raise);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:36px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(520px 220px at 12% 0%, rgba(53,230,192,.12), transparent 70%);
  pointer-events:none;
}
.cta-band h2{
  font-size:clamp(21px,2.4vw,28px);
  margin-bottom:8px;
  position:relative;
}
.cta-band p{
  color:var(--text-sub);
  font-size:15px;
  margin:0;
  position:relative;
}
.cta-band .btn{position:relative;flex:0 0 auto}

/* ---------- footer ---------- */
.site-footer{
  margin-top:72px;
  background:var(--bg-raise);
  border-top:1px solid var(--line);
  padding:56px 0 28px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:36px;
  padding-bottom:36px;
  border-bottom:1px solid var(--line);
}
.footer-brand .brand{margin-bottom:16px}
.footer-text{font-size:14px;color:var(--text-sub);line-height:1.8;max-width:38ch}
.footer-col h4{font-size:15px;margin-bottom:14px;color:var(--text)}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text-sub)}
.footer-col a:hover{color:var(--brand)}
.footer-note{font-size:13.5px;color:var(--text-sub);line-height:1.8;margin:0}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:22px;
  font-size:13px;
  color:var(--text-dim);
}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  .header-inner{height:64px}
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(360px,86vw);
    background:rgba(12,21,34,.98);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-left:1px solid rgba(53,230,192,.28);
    box-shadow:-30px 0 60px -30px rgba(0,0,0,.95);
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:88px 22px 32px;
    transform:translateX(102%);
    transition:transform .3s var(--ease);
    overflow-y:auto;
    z-index:70;
  }
  body.nav-open .main-nav{transform:translateX(0)}
  body.nav-open{overflow:hidden}
  .nav-link{padding:14px 16px;font-size:16px;border-radius:12px}
  .nav-link.is-active::after{left:16px;right:auto;width:26px;bottom:8px}
  .nav-cta{margin:14px 0 0;width:100%;padding:14px 20px;font-size:15px}
  .nav-toggle{position:relative;z-index:80}
  body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  body.nav-open .nav-toggle span:nth-child(2){opacity:0}
  body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .intro-panel{grid-template-columns:1fr;gap:16px;padding:26px}
  .intro-index{font-size:34px}
  .cards-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .check-layout{grid-template-columns:1fr;gap:28px}
  .form-panel{grid-template-columns:1fr;gap:28px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:60px 0}
}
@media screen and (max-width:767px){
  .cards-grid{grid-template-columns:1fr}
  .page-banner h1{max-width:100%}
  .banner-inner{padding-top:28px;padding-bottom:36px;min-height:0}
  .alert-strip{grid-template-columns:1fr;gap:14px;padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
}
@media screen and (max-width:519px){
  body{font-size:16px}
  .container{padding:0 20px}
  .banner-actions{flex-direction:column;align-items:stretch}
  .banner-actions .btn{width:100%}
  .card-body{padding:20px}
  .faq{padding:4px 16px}
  .faq-q{font-size:15px;padding:18px 0}
  .cta-band{padding:26px 22px}
  .footer-bottom{font-size:12.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .card:hover{transform:none}
  .card:hover .card-media img{transform:none}
  .btn:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --bg-deep:#060B12;
  --bg-panel:#0C1522;
  --bg-raise:#111E2F;
  --glass:rgba(255,255,255,0.06);
  --line:rgba(126,180,255,0.14);
  --line-strong:rgba(126,180,255,0.28);
  --brand:#35E6C0;
  --brand-deep:#12A98C;
  --accent:#FFB84D;
  --text:#EAF2FF;
  --text-sub:#A3B4CB;
  --text-dim:#6E819A;
  --radius-card:18px;
  --radius-lg:24px;
  --radius-img:16px;
  --radius-input:12px;
  --shadow-card:0 24px 60px -32px rgba(0,0,0,.85);
  --shadow-hover:0 30px 70px -30px rgba(0,0,0,.9);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
html body{
  margin:0;
  padding:0;
  background:var(--bg-deep);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
html body::before{
  content:"";
  position:fixed;
  inset:0 0 auto 0;
  height:800px;
  background:radial-gradient(60% 55% at 50% 0%,rgba(53,230,192,.08),transparent 70%);
  pointer-events:none;
  z-index:0;
}
html body::after{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(126,180,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(126,180,255,.03) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease);}
a:hover{color:#5cf0d2;}
p{margin:0 0 16px;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.3;letter-spacing:-.01em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
  position:relative;
  z-index:1;
}
.section{padding:96px 0;position:relative;z-index:1;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:40px;max-width:760px;}
.section-head h2{font-size:clamp(22px,2.8vw,34px);margin-bottom:14px;}
.section-head p{color:var(--text-sub);font-size:16px;margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;
  color:var(--accent);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);display:inline-block;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(6,11,18,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),height .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,11,18,.92);
  border-bottom:1px solid var(--line-strong);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:72px;transition:height .25s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;display:grid;place-items:center;
  border:1px solid var(--line-strong);border-radius:11px;background:rgba(53,230,192,.07);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.02em;}
.brand-text span{font-size:11px;color:var(--text-sub);letter-spacing:.16em;margin-top:3px;}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  padding:9px 14px;border-radius:999px;
  font-size:15px;color:var(--text-sub);font-weight:500;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(53,230,192,.9);
  transform:scaleX(0);transform-origin:left;transition:transform .26s var(--ease);
}
.nav-link.is-active{color:var(--text);}
.nav-link.is-active::after{transform:scaleX(1);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;
  padding:14px 28px;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),filter .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--brand);color:#04120F;
  box-shadow:0 0 0 1px rgba(53,230,192,.4),0 12px 30px -12px rgba(53,230,192,.7);
}
.btn-primary:hover{
  color:#04120F;filter:brightness(1.08);transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(53,230,192,.55),0 18px 40px -14px rgba(53,230,192,.85);
}
.btn-primary:active{transform:translateY(-1px);}
.btn-ghost{
  background:transparent;color:var(--text);border:1px solid var(--line-strong);
}
.btn-ghost:hover{color:var(--text);border-color:var(--brand);box-shadow:inset 0 0 24px rgba(53,230,192,.12);}
.btn-sm{padding:10px 20px;font-size:14px;}
.nav-cta{margin-left:8px;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line-strong);
  color:var(--text);font-size:16px;cursor:pointer;
}
.nav-drawer{
  position:fixed;inset:0;z-index:200;
  background:rgba(6,11,18,.97);
  backdrop-filter:blur(16px);
  padding:22px 20px 32px;
  display:none;flex-direction:column;
  overflow-y:auto;
}
.nav-drawer.is-open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);color:var(--text);font-size:16px;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:28px;}
.drawer-nav a{
  padding:15px 16px;border-radius:14px;color:var(--text-sub);font-size:17px;
  border:1px solid transparent;transition:all .22s var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.is-active{
  color:var(--text);background:rgba(53,230,192,.08);
  border-color:rgba(53,230,192,.32);
  box-shadow:inset 0 0 22px rgba(53,230,192,.1);
}
.drawer-nav .btn{width:100%;margin-top:16px;}

/* ============ 页面 Banner ============ */
.page-banner{
  position:relative;overflow:hidden;
  padding:56px 0 48px;
  min-height:300px;
  display:flex;align-items:center;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(17,30,47,.72),rgba(6,11,18,.9));
}
.banner-visual{
  position:absolute;top:0;right:0;bottom:0;width:58%;
  object-fit:cover;object-position:center right;
  opacity:.4;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 42%);
  mask-image:linear-gradient(90deg,transparent,#000 42%);
  pointer-events:none;
}
.page-banner::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,230,192,.5),transparent);
}
.banner-inner{position:relative;z-index:2;max-width:720px;}
.crumbs{margin-bottom:22px;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-dim);}
.crumbs li{display:inline-flex;align-items:center;gap:8px;}
.crumbs li+li::before{content:"/";color:var(--text-dim);opacity:.6;}
.crumbs a{color:var(--text-sub);}
.crumbs a:hover{color:var(--brand);}
.crumbs .current{color:var(--text-dim);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:6px;
  color:var(--brand);background:rgba(53,230,192,.1);
  border:1px solid rgba(53,230,192,.3);
  letter-spacing:.04em;
}
.badge-accent{color:var(--accent);background:rgba(255,184,77,.1);border-color:rgba(255,184,77,.32);}
.page-banner h1{
  font-size:clamp(30px,4.6vw,52px);
  font-weight:800;line-height:1.15;letter-spacing:-.01em;
  margin:16px 0 16px;
}
.page-banner h1 .hl{color:var(--brand);}
.banner-lead{color:var(--text-sub);font-size:17px;max-width:600px;margin:0 0 26px;}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 筛选胶囊 ============ */
.chip-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.chip{
  padding:9px 18px;border-radius:999px;font-size:14px;font-weight:500;
  color:var(--text-sub);background:rgba(255,255,255,.03);
  border:1px solid var(--line);cursor:pointer;
  transition:all .22s var(--ease);
}
.chip:hover{color:var(--text);border-color:var(--line-strong);background:rgba(255,255,255,.06);}
.chip.is-active{
  color:#04120F;background:var(--brand);border-color:var(--brand);
  box-shadow:0 0 0 1px rgba(53,230,192,.35),0 10px 26px -14px rgba(53,230,192,.8);
}

/* ============ FAQ 手风琴 ============ */
.faq-shell{
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);
  padding:8px 28px;
  box-shadow:var(--shadow-card);
}
.faq-item{border-bottom:1px solid var(--line);position:relative;}
.faq-item:last-child{border-bottom:none;}
.faq-item::before{
  content:"";position:absolute;left:-28px;top:14px;bottom:14px;width:3px;
  border-radius:3px;background:var(--brand);
  opacity:0;transform:scaleY(.4);transform-origin:top;
  transition:opacity .26s var(--ease),transform .26s var(--ease);
}
.faq-item.is-open::before{opacity:1;transform:scaleY(1);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:14px;
  background:none;border:none;text-align:left;cursor:pointer;
  padding:22px 0;color:var(--text);
  transition:color .22s var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-num{
  font-family:var(--font-mono);font-size:13px;color:var(--accent);
  padding-top:4px;flex:0 0 30px;
}
.faq-title{flex:1;font-size:16px;font-weight:600;line-height:1.7;}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;margin-top:2px;position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--brand);
  border-radius:2px;transform:translate(-50%,-50%);
  transition:transform .26s var(--ease),opacity .26s var(--ease);
}
.faq-icon::before{width:12px;height:1.6px;}
.faq-icon::after{width:1.6px;height:12px;}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s var(--ease);}
.faq-a-inner{padding:0 0 20px 44px;}
.faq-a-inner p{color:var(--text-sub);font-size:15px;line-height:1.8;margin:0;}
.faq-empty{
  display:none;text-align:center;padding:56px 20px;color:var(--text-sub);
}
.faq-empty i{font-size:26px;color:var(--text-dim);display:block;margin-bottom:12px;}

/* ============ 分类说明卡 ============ */
.intro-card{
  display:flex;gap:26px;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:32px;
  box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
}
.intro-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(53,230,192,.5),rgba(126,180,255,.14),transparent);
}
.intro-num{
  font-family:var(--font-mono);font-size:34px;font-weight:700;color:var(--accent);
  line-height:1;flex:0 0 auto;padding-top:4px;
}
.intro-body h3{font-size:19px;margin-bottom:12px;}
.intro-body p{color:var(--text-sub);font-size:15.5px;margin:0 0 12px;}
.intro-body p:last-child{margin-bottom:0;}
.intro-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.tag{
  font-size:13px;color:var(--text-sub);padding:5px 12px;border-radius:8px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
}

/* ============ 公告时间线 ============ */
.notice-list{
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:10px 28px;
  box-shadow:var(--shadow-card);
}
.notice-item{
  display:flex;gap:20px;padding:22px 0;
  border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.notice-item:last-child{border-bottom:none;}
.notice-date{
  font-family:var(--font-mono);font-size:13px;color:var(--text-dim);
  flex:0 0 96px;padding-top:3px;letter-spacing:.02em;
}
.notice-body{flex:1;}
.notice-body h3{font-size:17px;margin-bottom:8px;font-weight:600;}
.notice-item:hover h3{color:var(--brand);}
.notice-body p{color:var(--text-sub);font-size:14.5px;margin:0 0 10px;line-height:1.75;}
.notice-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-dim);}

/* ============ 表单区 ============ */
.ask-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:start;}
.ask-copy h2{font-size:clamp(22px,2.8vw,32px);margin-bottom:16px;}
.ask-copy p{color:var(--text-sub);font-size:16px;}
.ask-points{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.ask-points li{display:flex;gap:10px;font-size:15px;color:var(--text-sub);line-height:1.7;}
.ask-points i{color:var(--brand);font-size:13px;margin-top:6px;}
.form-card{
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px;
  box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
}
.form-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(53,230,192,.45),transparent);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;color:var(--text-sub);margin-bottom:8px;}
.field select,.field input,.field textarea{
  width:100%;padding:13px 15px;
  background:var(--bg-deep);color:var(--text);
  border:1px solid var(--line-strong);border-radius:var(--radius-input);
  font-family:var(--font-sans);font-size:15px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.field textarea{min-height:140px;resize:vertical;line-height:1.75;}
.field select:focus,.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 2px rgba(53,230,192,.22);
}
.field select::placeholder,.field input::placeholder,.field textarea::placeholder{color:var(--text-dim);}
.form-hint{font-size:13px;color:var(--text-dim);margin:0 0 18px;line-height:1.7;}
.form-card .btn{width:100%;}

/* ============ CTA 通栏 ============ */
.cta-band{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:linear-gradient(120deg,rgba(17,30,47,.95),rgba(6,11,18,.95));
  padding:56px 0;
  position:relative;z-index:1;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px;}
.cta-inner p{color:var(--text-sub);margin:0;font-size:15.5px;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-raise);
  border-top:1px solid var(--line);
  padding:64px 0 30px;
  position:relative;z-index:1;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid var(--line);
}
.footer-brand .brand{margin-bottom:16px;}
.footer-text{color:var(--text-sub);font-size:14.5px;line-height:1.8;margin:0;max-width:340px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{color:var(--text-sub);font-size:14.5px;}
.footer-col ul a:hover{color:var(--brand);}
.footer-note{color:var(--text-sub);font-size:14px;line-height:1.8;margin:0;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;color:var(--text-dim);font-size:13px;
}

/* ============ 移动端底部条 ============ */
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:130;
  height:64px;padding:0 16px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(12,21,34,.96);
  backdrop-filter:blur(14px);
  border-top:1px solid var(--line-strong);
  align-items:center;justify-content:space-between;gap:14px;
}
.mobile-cta span{font-size:13.5px;color:var(--text-sub);}
.mobile-cta .btn{padding:11px 20px;font-size:14px;}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding:64px 0;}
  .section-tight{padding:48px 0;}
  .page-banner{min-height:260px;padding:44px 0 40px;}
  .banner-visual{width:100%;opacity:.22;mask-image:linear-gradient(180deg,transparent,#000 60%);-webkit-mask-image:linear-gradient(180deg,transparent,#000 60%);}
  .ask-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .mobile-cta{display:flex;}
  body{padding-bottom:80px;}
}
@media (max-width:767px){
  .intro-card{flex-direction:column;gap:14px;padding:26px;}
  .notice-item{flex-direction:column;gap:8px;}
  .notice-date{flex:none;}
  .faq-shell{padding:6px 18px;}
  .faq-item::before{left:-18px;}
  .faq-a-inner{padding-left:0;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:639px){
  .header-inner{height:64px;}
  .section{padding:56px 0;}
  .page-banner h1{font-size:clamp(26px,7.2vw,34px);}
  .banner-lead{font-size:15.5px;}
  .banner-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .faq-title{font-size:15px;}
  .faq-num{flex-basis:24px;font-size:12px;}
  .form-card{padding:22px;}
  .cta-actions .btn{width:100%;}
  .chip{padding:8px 14px;font-size:13px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .btn:hover{transform:none;}
}