/* roulang page: index */
:root{
  --bg-0:#060A13;
  --bg-1:#0B1220;
  --bg-2:#111A2C;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(120,200,255,.35);
  --brand:#38BDF8;
  --brand-2:#6E5BFF;
  --neon:#2DE2C6;
  --cta:#FF8A3D;
  --text:#E9EFFA;
  --text-2:#A7B6D0;
  --text-3:#6C7C99;
  --radius-card:16px;
  --radius-block:24px;
  --radius-btn:12px;
  --shadow-card:0 20px 60px -24px rgba(0,0,0,.85);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:'Noto Sans SC','PingFang SC','HarmonyOS Sans','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:32px 32px;
}
body::after{
  content:"";position:fixed;top:-260px;left:50%;transform:translateX(-50%);
  width:1100px;height:620px;pointer-events:none;z-index:0;
  background:radial-gradient(closest-side,rgba(56,189,248,.16),transparent);
}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease)}
img{max-width:100%;display:block}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.3;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 16px;position:relative;z-index:1}
@media (min-width:768px){.container-x{padding:0 24px}}
@media (min-width:1024px){.container-x{padding:0 32px}}
@media (min-width:1280px){.container-x{max-width:1280px}}
.num{font-family:'JetBrains Mono','Barlow',ui-monospace,monospace;font-variant-numeric:tabular-nums}
.h1{font-size:clamp(30px,5vw,52px);line-height:1.18}
.h2{font-size:clamp(24px,3.4vw,34px)}
.h3{font-size:clamp(19px,2.2vw,22px)}
.lead{font-size:clamp(15px,1.4vw,18px);color:var(--text-2);line-height:1.85;max-width:56ch}
.muted{color:var(--text-2);font-size:15px;line-height:1.75}
.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.14);
}
.link{color:var(--brand);border-bottom:1px solid rgba(56,189,248,.35);padding-bottom:1px}
.link:hover{color:var(--neon);text-shadow:0 0 12px rgba(45,226,198,.55)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;border-radius:var(--radius-btn);
  padding:12px 24px;border:1px solid transparent;cursor:pointer;
  transition:all .18s var(--ease);white-space:nowrap;
}
.btn-cta{background:linear-gradient(135deg,#FF9A52,#FF7A26);color:#1A0E04;box-shadow:0 0 24px -6px rgba(255,138,61,.65)}
.btn-cta:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 32px -4px rgba(255,138,61,.8)}
.btn-cta:active{transform:translateY(0);box-shadow:0 0 16px -8px rgba(255,138,61,.6)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);box-shadow:0 0 22px -8px rgba(56,189,248,.7)}
.btn:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.btn[disabled]{opacity:.4;cursor:not-allowed;box-shadow:none;transform:none}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:10px}
.btn-full{width:100%}
@media (min-width:640px){.btn-auto{width:auto}}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;color:var(--neon);
  border:1px solid rgba(45,226,198,.4);background:rgba(45,226,198,.06);
  font-family:'JetBrains Mono','Barlow',monospace;
}
.badge-warm{color:var(--cta);border-color:rgba(255,138,61,.45);background:rgba(255,138,61,.08)}
.badge-plain{color:var(--text-2);border-color:var(--line);background:rgba(255,255,255,.03);font-family:inherit}

/* 公告条 */
.ticker{position:relative;z-index:60;background:linear-gradient(90deg,rgba(110,91,255,.18),rgba(56,189,248,.14),rgba(45,226,198,.12))}
.ticker-inner{display:flex;align-items:center;gap:10px;min-height:38px;padding-top:6px;padding-bottom:6px}
.ticker p{font-size:12.5px;line-height:1.6;color:var(--text-2);margin:0}
.ticker-dot{width:7px;height:7px;border-radius:50%;background:var(--neon);box-shadow:0 0 10px rgba(45,226,198,.9);flex:none}
.ticker strong{color:var(--cta);font-weight:600}

/* 导航 */
.site-header{position:sticky;top:0;z-index:50;background:rgba(6,10,19,.82);-webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(56,189,248,.55),rgba(45,226,198,.5),transparent)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:56px}
@media (min-width:1024px){.nav-inner{height:68px}}
.logo{display:inline-flex;align-items:baseline;font-size:19px;font-weight:700;line-height:1;letter-spacing:-.01em}
.logo .logo-a{color:var(--brand)}
.logo .logo-b{color:var(--text);margin-left:1px;transition:color .18s var(--ease)}
.logo:hover .logo-b{color:var(--neon)}
.nav-main{display:none}
@media (min-width:1024px){.nav-main{display:flex;align-items:center;gap:2px}}
.nav-link{position:relative;display:inline-flex;align-items:center;height:68px;padding:0 12px;font-size:15px;color:var(--text-2)}
.nav-link:hover{color:var(--text)}
.nav-link:hover::before{content:"";position:absolute;left:12px;right:12px;bottom:14px;height:1px;background:rgba(56,189,248,.65);box-shadow:0 0 10px rgba(56,189,248,.75)}
.nav-link.active{color:var(--neon)}
.nav-link.active::after{content:"";position:absolute;left:10px;right:10px;bottom:15px;height:2px;border-radius:2px;background:var(--neon);box-shadow:0 0 12px rgba(45,226,198,.85)}
.nav-link:focus-visible{outline:2px solid var(--neon);outline-offset:-4px;border-radius:8px}
.nav-right{display:flex;align-items:center;gap:10px}
.nav-cta{display:none}
@media (min-width:640px){.nav-cta{display:inline-flex}}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);cursor:pointer;transition:all .18s var(--ease)}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--brand)}
@media (min-width:1024px){.nav-toggle{display:none}}
.drawer{position:fixed;inset:0;z-index:80;background:rgba(6,10,19,.97);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:flex;flex-direction:column;padding:16px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s}
.drawer.open{opacity:1;visibility:visible;transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);cursor:pointer;display:inline-flex;align-items:center;justify-content:center}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px}
.drawer-nav a{height:56px;display:flex;align-items:center;font-size:17px;color:var(--text-2);border-bottom:1px solid var(--line);padding-left:4px;transition:all .18s var(--ease)}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--neon);padding-left:10px}
.drawer-foot{margin-top:auto;padding-top:20px}

/* 区块 */
.section{padding:56px 0;position:relative;z-index:1}
@media (min-width:1024px){.section{padding:96px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:30px}
@media (min-width:768px){.section-head{margin-bottom:40px}}
.section-head .sub{font-size:15px;color:var(--text-2);margin-top:8px;max-width:62ch}

/* Hero */
.hero{position:relative;z-index:1;padding:56px 0 64px;overflow:hidden}
@media (min-width:1024px){.hero{padding:88px 0 112px}}
.hero::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(45,226,198,.6),rgba(56,189,248,.55),transparent)}
.hero::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:70%;height:1px;background:linear-gradient(90deg,transparent,rgba(110,91,255,.5),transparent)}
.hero-grid{display:grid;gap:36px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:56px}}
.hero-title{margin-top:18px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.trust-item{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03);font-size:13px;color:var(--text-2)}
.trust-item svg{color:var(--brand);flex:none}
.hero-visual{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line-strong);aspect-ratio:16/10;box-shadow:0 30px 80px -32px rgba(0,0,0,.9)}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,rgba(110,91,255,.24),transparent 58%),linear-gradient(0deg,rgba(6,10,19,.6),transparent 62%)}
.hero-visual::before{content:"";position:absolute;right:-40px;bottom:-60px;width:240px;height:240px;z-index:2;background:radial-gradient(closest-side,rgba(45,226,198,.35),transparent);pointer-events:none}

/* 三步上手 */
.step-grid{display:grid;gap:20px;position:relative}
@media (min-width:640px){.step-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.step-grid{grid-template-columns:repeat(3,1fr);gap:28px;padding-top:24px}
  .step-grid::after{content:"";position:absolute;left:4%;right:4%;top:0;height:2px;background:linear-gradient(90deg,transparent,rgba(45,226,198,.7),rgba(56,189,248,.65),transparent);box-shadow:0 0 14px rgba(45,226,198,.45)}
}
.step-card{position:relative;padding:28px 24px;border-radius:var(--radius-card);transition:all .18s var(--ease)}
.step-card::before{content:"";position:absolute;left:24px;right:24px;top:0;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--neon),transparent)}
.step-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow-card),0 0 28px -6px rgba(56,189,248,.5)}
.step-num{font-family:'JetBrains Mono','Barlow',monospace;font-size:44px;font-weight:700;color:var(--neon);line-height:1;letter-spacing:-.02em}
.step-card h3{margin-top:16px;font-size:20px}
.step-card p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* 案例证明 */
.proof-grid{display:grid;gap:24px}
@media (min-width:1024px){.proof-grid{grid-template-columns:1.35fr 1fr}}
.stat-panel{padding:28px;border-radius:var(--radius-block);position:relative;overflow:hidden}
@media (min-width:768px){.stat-panel{padding:36px}}
.stat-panel::before{content:"";position:absolute;left:-80px;top:-80px;width:280px;height:280px;background:radial-gradient(closest-side,rgba(56,189,248,.22),transparent);pointer-events:none}
.stat-row{display:grid;gap:18px;grid-template-columns:1fr;margin-top:26px}
@media (min-width:520px){.stat-row{grid-template-columns:repeat(3,1fr)}}
.stat-item{padding:18px 16px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.stat-num{font-family:'JetBrains Mono','Barlow',monospace;font-size:clamp(34px,4.6vw,50px);font-weight:700;line-height:1;color:var(--neon);letter-spacing:-.02em}
.stat-unit{font-size:13px;color:var(--text-2);margin-left:4px}
.stat-label{margin-top:10px;font-size:13.5px;color:var(--text-2);line-height:1.7}
.quote-list{display:flex;flex-direction:column;gap:16px}
.quote{position:relative;padding:22px 22px 20px 30px;border-radius:var(--radius-card);border:1px solid var(--line);background:rgba(255,255,255,.03);transition:all .18s var(--ease)}
.quote:hover{border-color:var(--line-strong);box-shadow:0 0 24px -8px rgba(56,189,248,.55)}
.quote::before{content:"\201C";position:absolute;left:12px;top:6px;font-size:38px;line-height:1;color:rgba(56,189,248,.4);font-family:Georgia,serif}
.quote p{font-size:14.5px;line-height:1.8;color:var(--text-2)}
.quote cite{display:block;margin-top:10px;font-size:13px;color:var(--text-3);font-style:normal}

/* 最新信息 */
.info-grid{display:grid;gap:22px}
@media (min-width:640px){.info-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.info-grid{grid-template-columns:repeat(3,1fr)}}
.info-card{display:flex;flex-direction:column;height:100%;overflow:hidden;border-radius:var(--radius-card);transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease)}
.info-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow-card),0 0 28px -4px rgba(56,189,248,.45)}
.info-cover{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.info-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.info-card:hover .info-cover img{transform:scale(1.03)}
.info-body{display:flex;flex-direction:column;gap:10px;flex:1;padding:18px 18px 20px}
.info-title{font-size:18px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.info-title a:hover{color:var(--brand)}
.info-sum{margin:0;font-size:15px;line-height:1.7;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.info-meta{margin-top:auto;display:flex;align-items:center;gap:8px;padding-top:8px;font-size:12.5px;color:var(--text-3);font-family:'JetBrains Mono','Barlow',monospace}
.info-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);flex:none}
.empty-state{padding:46px 28px;text-align:center;border-radius:var(--radius-block)}
.empty-state svg{color:var(--brand);margin:0 auto 14px}
.empty-state p{font-size:15px;color:var(--text-2)}
.empty-state .btn{margin-top:18px}

/* FAQ */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line);transition:background .18s var(--ease)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 4px;background:none;border:0;color:var(--text);font-size:17px;font-weight:600;text-align:left;line-height:1.6;cursor:pointer;transition:color .18s var(--ease)}
.faq-q:hover{color:var(--brand)}
.faq-q:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:8px}
.faq-arrow{flex:none;color:var(--neon);transition:transform .25s var(--ease)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{margin:0 0 20px;font-size:15px;line-height:1.85;color:var(--text-2);padding-right:8px}
.faq-item.open{position:relative;padding:0 18px;border-radius:14px;border-bottom-color:transparent;background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.12)}
.faq-item.open::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:var(--neon);box-shadow:0 0 14px rgba(45,226,198,.75)}
.faq-item.open .faq-arrow{transform:rotate(180deg)}
.faq-item.open .faq-a{max-height:460px}

/* 立即开通 */
.cta-band{position:relative;overflow:hidden;border-radius:var(--radius-block);border:1px solid var(--line-strong);padding:30px;background:linear-gradient(150deg,rgba(17,26,44,.96),rgba(11,18,32,.94));box-shadow:var(--shadow-card)}
@media (min-width:768px){.cta-band{padding:44px}}
.cta-band::before{content:"";position:absolute;right:-140px;top:-140px;width:440px;height:440px;background:radial-gradient(closest-side,rgba(255,138,61,.26),transparent);pointer-events:none}
.cta-band::after{content:"";position:absolute;left:-120px;bottom:-140px;width:360px;height:360px;background:radial-gradient(closest-side,rgba(56,189,248,.18),transparent);pointer-events:none}
.cta-grid{position:relative;z-index:1;display:grid;gap:32px}
@media (min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;gap:48px;align-items:start}}
.cta-list{display:flex;flex-direction:column;gap:12px;margin-top:22px}
.cta-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--text-2);line-height:1.75}
.cta-list svg{flex:none;margin-top:6px;color:var(--neon)}
.form-panel{padding:24px;border-radius:var(--radius-card);border:1px solid rgba(255,255,255,.12);background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));-webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%)}
@media (min-width:768px){.form-panel{padding:28px}}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.field label{font-size:13px;color:var(--text-2)}
.field input,.field select{width:100%;background:rgba(6,10,19,.72);border:1px solid var(--line);border-radius:10px;padding:11px 14px;color:var(--text);font-size:15px;font-family:inherit;outline:none;transition:all .18s var(--ease)}
.field input::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(56,189,248,.16)}
.field.error input{border-color:#F87171;box-shadow:0 0 0 4px rgba(248,113,113,.14)}
.field-msg{font-size:12px;color:#F87171;line-height:1.5}
.form-note{margin-top:12px;font-size:13px;color:var(--text-3);line-height:1.7}
.form-ok{display:none;margin-top:14px;padding:10px 14px;border-radius:10px;border:1px solid rgba(45,226,198,.4);background:rgba(45,226,198,.08);font-size:13.5px;color:var(--neon)}

/* 页脚 */
.site-footer{position:relative;z-index:1;margin-top:56px;padding-top:56px;background:#04070E}
@media (min-width:1024px){.site-footer{margin-top:112px;padding-top:72px}}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(56,189,248,.5),rgba(45,226,198,.45),transparent)}
.footer-grid{display:grid;gap:32px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.footer-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px;letter-spacing:.02em}
.footer-link{display:block;font-size:14px;color:var(--text-2);padding:5px 0;transition:all .18s var(--ease)}
.footer-link:hover{color:var(--brand);transform:translateX(2px)}
.footer-text{font-size:14px;line-height:1.85;color:var(--text-2)}
.footer-contact{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);padding:5px 0}
.footer-contact svg{color:var(--brand);flex:none}
.footer-bottom{margin-top:40px;border-top:1px solid var(--line);padding:20px 0;text-align:center;font-size:13px;color:var(--text-3);line-height:1.8}

/* 返回顶部 */
.to-top{position:fixed;right:18px;bottom:22px;z-index:60;width:44px;height:44px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line-strong);background:rgba(11,18,32,.88);color:var(--text-2);cursor:pointer;opacity:0;visibility:hidden;transition:all .22s var(--ease)}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{color:var(--neon);box-shadow:0 0 24px -6px rgba(45,226,198,.8)}

/* 进场动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .info-card:hover,.step-card:hover{transform:none}
}

/* roulang page: article */
:root{
    --bg-0:#060A13;
    --bg-1:#0B1220;
    --bg-2:#111A2C;
    --line:rgba(255,255,255,.10);
    --line-strong:rgba(120,200,255,.35);
    --brand:#38BDF8;
    --brand-2:#6E5BFF;
    --neon:#2DE2C6;
    --cta:#FF8A3D;
    --text:#E9EFFA;
    --text-2:#A7B6D0;
    --text-3:#6C7C99;
    --radius-card:16px;
    --radius-block:24px;
    --radius-btn:12px;
    --shadow-card:0 20px 60px -24px rgba(0,0,0,.85);
    --glow-brand:0 0 28px -4px rgba(56,189,248,.45);
    --glow-cta:0 0 24px -6px rgba(255,138,61,.65);
    --ease:180ms cubic-bezier(.4,0,.2,1);
    --font-sans:'Noto Sans SC','PingFang SC','HarmonyOS Sans','Microsoft YaHei',sans-serif;
    --font-mono:'JetBrains Mono','Barlow',ui-monospace,monospace;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg-0);
    color:var(--text);
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.9;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
    overflow-x:hidden;
  }
  body::before{
    content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
    background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
    background-size:32px 32px;
  }
  body::after{
    content:"";position:fixed;top:-240px;left:50%;transform:translateX(-50%);
    width:960px;height:640px;z-index:0;pointer-events:none;
    background:radial-gradient(circle,rgba(56,189,248,.15),rgba(110,91,255,.08) 45%,transparent 68%);
  }
  img{max-width:100%;display:block}
  a{color:var(--brand);text-decoration:none;transition:color var(--ease)}
  a:hover{color:var(--neon)}
  button{font-family:inherit}
  h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.35}
  p{margin:0}
  .container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 16px;position:relative;z-index:1}
  @media (min-width:768px){ .container-x{padding:0 24px} }
  @media (min-width:1024px){ .container-x{padding:0 32px} }
  @media (min-width:1280px){ .container-x{max-width:1280px} }

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(6,10,19,.80);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid var(--line);
  }
  .site-header::after{
    content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
    background:linear-gradient(90deg,transparent,rgba(45,226,198,.55),rgba(56,189,248,.55),transparent);
  }
  .nav-inner{display:flex;align-items:center;gap:18px;height:68px}
  .logo{display:inline-flex;align-items:baseline;font-weight:700;font-size:19px;letter-spacing:-.01em;text-decoration:none;white-space:nowrap}
  .logo:hover{color:var(--neon)}
  .logo-a{color:var(--brand)}
  .logo-b{color:var(--text)}
  .logo:hover .logo-b{color:var(--neon)}
  .nav-main{display:none;gap:2px;margin-left:auto}
  .nav-link{
    position:relative;display:inline-block;padding:9px 12px;border-radius:10px;
    font-size:14.5px;color:var(--text-2);text-decoration:none;
    transition:color var(--ease),background var(--ease);
  }
  .nav-link:hover{color:var(--text);box-shadow:0 1px 0 0 rgba(56,189,248,.5)}
  .nav-link.active{color:var(--neon)}
  .nav-link.active::after{
    content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
    background:var(--neon);box-shadow:0 0 12px rgba(45,226,198,.85);
  }
  .nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
  .nav-toggle{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
    background:rgba(255,255,255,.03);color:var(--text);cursor:pointer;transition:all var(--ease);
  }
  .nav-toggle:hover{border-color:var(--line-strong);color:var(--brand)}
  @media (min-width:1024px){
    .nav-main{display:flex}
    .nav-toggle{display:none}
    .nav-right{margin-left:0}
  }

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 22px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;line-height:1.2;
    border:1px solid transparent;cursor:pointer;
    transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease),filter var(--ease);
    text-decoration:none;
  }
  .btn-sm{padding:9px 16px;font-size:14px}
  .btn-cta{
    background:linear-gradient(135deg,#FF9A50,#FF7A28);
    color:#1A0E05;border-radius:999px;box-shadow:var(--glow-cta);
  }
  .btn-cta:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 34px -4px rgba(255,138,61,.8);color:#1A0E05}
  .btn-cta:active{transform:translateY(0);box-shadow:0 0 16px -8px rgba(255,138,61,.6)}
  .btn-ghost{
    background:transparent;border:1px solid var(--line-strong);color:var(--text-2);
  }
  .btn-ghost:hover{color:var(--brand);border-color:var(--brand);box-shadow:var(--glow-brand);transform:translateY(-1px)}
  .btn:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
  .btn[disabled]{opacity:.4;box-shadow:none;cursor:not-allowed}

  /* ============ 移动抽屉 ============ */
  .drawer{
    position:fixed;inset:0;z-index:80;background:rgba(6,10,19,.97);
    -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
    display:none;flex-direction:column;padding:22px 20px 40px;
  }
  .drawer.is-open{display:flex}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
  .drawer-close{
    width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
    background:transparent;color:var(--text);cursor:pointer;
  }
  .drawer-link{
    display:flex;align-items:center;min-height:56px;padding:0 6px;
    font-size:17px;color:var(--text-2);border-bottom:1px solid var(--line);
    animation:drawerIn 340ms cubic-bezier(.4,0,.2,1) both;
  }
  .drawer-link.active{color:var(--neon)}
  .drawer-link:nth-child(2){animation-delay:40ms}
  .drawer-link:nth-child(3){animation-delay:80ms}
  .drawer-link:nth-child(4){animation-delay:120ms}
  .drawer-link:nth-child(5){animation-delay:160ms}
  @keyframes drawerIn{from{opacity:0;transform:translateX(-10px)}to{opacity:1;transform:none}}
  .drawer-cta{margin-top:26px}

  /* ============ 面包屑 ============ */
  .crumbs{
    display:flex;align-items:center;gap:8px;height:40px;margin-top:10px;
    font-size:13px;color:var(--text-3);white-space:nowrap;overflow:hidden;
  }
  .crumbs a{color:var(--text-3)}
  .crumbs a:hover{color:var(--brand)}
  .crumbs .sep{opacity:.55}
  .crumbs .current{color:var(--text-2);overflow:hidden;text-overflow:ellipsis}

  /* ============ 文章头部 ============ */
  .article-head{max-width:860px;margin:0 auto;padding:30px 0 0}
  .badge{
    display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
    font-size:12px;letter-spacing:.02em;color:var(--neon);
    border:1px solid rgba(45,226,198,.42);background:rgba(45,226,198,.06);
  }
  .badge-warm{color:#FFD3AF;border-color:rgba(255,138,61,.5);background:rgba(255,138,61,.10)}
  .article-title{
    font-size:clamp(28px,4.4vw,44px);font-weight:700;line-height:1.3;
    margin:16px 0 18px;letter-spacing:-.01em;
  }
  .meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13.5px;color:var(--text-3)}
  .meta-row .mono{font-family:var(--font-mono);font-size:13px;color:var(--text-2)}
  .meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.6}

  /* ============ 封面 ============ */
  .cover{
    max-width:1000px;margin:34px auto 0;border-radius:var(--radius-card);overflow:hidden;
    border:1px solid var(--line);box-shadow:var(--shadow-card);position:relative;
  }
  .cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
  .cover::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:linear-gradient(180deg,rgba(6,10,19,0) 45%,rgba(6,10,19,.55));
  }

  /* ============ 正文 ============ */
  .article-body{
    max-width:760px;margin:0 auto;padding:52px 0 0;
    font-size:16.5px;line-height:1.9;color:#D9E3F3;
    word-break:break-word;
  }
  .article-body p{margin:0 0 1.5em}
  .article-body h2{
    position:relative;font-size:clamp(21px,2.6vw,26px);font-weight:700;color:var(--text);
    margin:2em 0 .85em;padding-left:16px;line-height:1.45;
  }
  .article-body h2::before{
    content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:3px;border-radius:3px;
    background:linear-gradient(180deg,var(--neon),var(--brand));
    box-shadow:0 0 14px rgba(45,226,198,.55);
  }
  .article-body h3{font-size:19px;font-weight:600;color:var(--text);margin:1.6em 0 .7em}
  .article-body h4{font-size:17px;font-weight:600;color:var(--text-2);margin:1.4em 0 .6em}
  .article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
  .article-body a:hover{color:var(--neon)}
  .article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.5em}
  .article-body li{margin:.45em 0;line-height:1.8}
  .article-body blockquote{
    margin:1.6em 0;padding:16px 20px;border-left:3px solid var(--brand);
    background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
    border-radius:0 12px 12px 0;color:var(--text-2);font-style:normal;
  }
  .article-body blockquote p:last-child{margin-bottom:0}
  .article-body img{width:100%;height:auto;border-radius:12px;margin:1.4em 0 .5em}
  .article-body figure{margin:1.4em 0}
  .article-body figcaption{font-size:13px;color:var(--text-3);margin-top:8px;text-align:center}
  .article-body .table-wrap{overflow-x:auto;margin:1.5em 0;border-radius:12px;border:1px solid var(--line)}
  .article-body table{width:100%;border-collapse:collapse;font-size:15px;min-width:480px}
  .article-body th,.article-body td{border-bottom:1px solid var(--line);padding:11px 14px;text-align:left}
  .article-body th{background:rgba(255,255,255,.04);color:var(--text);font-weight:600}
  .article-body hr{border:none;height:1px;background:var(--line);margin:2.4em 0}
  .article-body strong{color:#fff}

  .empty-state{
    text-align:center;padding:46px 24px;border-radius:var(--radius-card);
    border:1px solid var(--line);background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
    box-shadow:var(--shadow-card);
  }
  .empty-state svg{color:var(--brand);margin:0 auto 14px}
  .empty-state h2{font-size:22px;font-weight:700;margin-bottom:10px;padding:0}
  .empty-state h2::before{display:none}
  .empty-state p{color:var(--text-2);font-size:15px;margin-bottom:20px}

  /* ============ 标签 ============ */
  .tag-row{max-width:760px;margin:34px auto 0;display:flex;flex-wrap:wrap;gap:10px;align-items:center}
  .tag-row .label{font-size:13px;color:var(--text-3);margin-right:4px}
  .tag{
    display:inline-flex;align-items:center;padding:5px 13px;border-radius:999px;
    font-size:13px;color:var(--text-2);border:1px solid var(--line);
    background:rgba(255,255,255,.03);transition:all var(--ease);
  }
  .tag:hover{color:var(--neon);border-color:rgba(45,226,198,.5);box-shadow:0 0 18px -6px rgba(45,226,198,.6)}

  /* ============ 相关推荐 ============ */
  .rel-section{padding:96px 0 0}
  @media (max-width:640px){ .rel-section{padding:56px 0 0} }
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px}
  .sec-title{font-size:clamp(22px,3vw,30px);font-weight:700}
  .sec-sub{font-size:14.5px;color:var(--text-2);margin-top:8px}
  .rel-grid{display:grid;gap:24px;grid-template-columns:1fr}
  @media (min-width:640px){ .rel-grid{grid-template-columns:repeat(2,1fr)} }
  @media (min-width:1024px){ .rel-grid{grid-template-columns:repeat(3,1fr)} }
  .rel-card{
    display:flex;flex-direction:column;height:100%;
    border-radius:var(--radius-card);overflow:hidden;
    border:1px solid var(--line);
    background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
    -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.12),var(--shadow-card);
    transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  }
  .rel-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:inset 0 1px 0 rgba(255,255,255,.12),var(--shadow-card),var(--glow-brand)}
  .rel-card .thumb{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--bg-2)}
  .rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms cubic-bezier(.4,0,.2,1)}
  .rel-card:hover .thumb img{transform:scale(1.03)}
  .rel-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
  .rel-card h3{font-size:17.5px;font-weight:600;line-height:1.5;margin:12px 0 0}
  .rel-card h3 a{color:var(--text);text-decoration:none}
  .rel-card h3 a:hover{color:var(--brand)}
  .rel-card p{font-size:14.5px;line-height:1.75;color:var(--text-2);margin-top:9px;flex:1}
  .rel-card .meta{margin-top:14px;font-size:12.5px;color:var(--text-3);font-family:var(--font-mono);letter-spacing:.02em}

  /* ============ CTA 带 ============ */
  .cta-band{padding:100px 0 0}
  @media (max-width:640px){ .cta-band{padding:64px 0 0} }
  .cta-inner{
    position:relative;overflow:hidden;border-radius:var(--radius-block);
    border:1px solid var(--line);padding:38px 24px;
    background:
      radial-gradient(600px 220px at 88% 8%,rgba(255,138,61,.20),transparent 70%),
      linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
    -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.12),var(--shadow-card);
    display:grid;gap:30px;grid-template-columns:1fr;
  }
  @media (min-width:1024px){ .cta-inner{grid-template-columns:1.05fr .95fr;padding:46px 44px;gap:48px;align-items:center} }
  .cta-inner h2{font-size:clamp(23px,3vw,32px);font-weight:700;line-height:1.35}
  .cta-inner .lead{color:var(--text-2);font-size:15.5px;margin-top:14px;line-height:1.85}
  .cta-list{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:10px}
  .cta-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--text-2)}
  .cta-list svg{flex:none;margin-top:6px;color:var(--neon)}
  .form-card{padding:22px;border-radius:var(--radius-card);border:1px solid var(--line);background:rgba(10,16,28,.60)}
  .field{margin-bottom:16px}
  .field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px}
  .field input,.field select{
    width:100%;padding:11px 14px;border-radius:10px;
    background:rgba(6,10,19,.72);border:1px solid var(--line);
    color:var(--text);font-size:15px;font-family:inherit;
    transition:border-color var(--ease),box-shadow var(--ease);
  }
  .field input::placeholder{color:var(--text-3)}
  .field input:focus,.field select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(56,189,248,.16)}
  .field .hint{font-size:12px;color:var(--text-3);margin-top:6px}
  .form-note{font-size:12.5px;color:var(--text-3);margin-top:12px;line-height:1.7}

  /* ============ 页脚 ============ */
  .site-footer{
    margin-top:112px;border-top:1px solid var(--line);
    background:#04070E;position:relative;z-index:1;
  }
  .site-footer::before{
    content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
    background:linear-gradient(90deg,transparent,rgba(45,226,198,.5),rgba(56,189,248,.5),transparent);
  }
  .footer-grid{display:grid;gap:32px;padding:56px 0 40px;grid-template-columns:1fr}
  @media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,1fr)} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px} }
  .footer-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px;letter-spacing:.02em}
  .footer-link{display:block;font-size:14px;color:var(--text-2);padding:5px 0;transition:color var(--ease),transform var(--ease)}
  .footer-link:hover{color:var(--brand);transform:translateX(2px)}
  .footer-text{font-size:13.5px;color:var(--text-3);line-height:1.8}
  .footer-contact{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-2)}
  .footer-bottom{
    border-top:1px solid var(--line);padding:20px 0 28px;text-align:center;
    font-size:13px;color:var(--text-3);
  }

  /* ============ 返回顶部 ============ */
  .to-top{
    position:fixed;right:18px;bottom:22px;z-index:70;
    width:44px;height:44px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    border:1px solid var(--line);
    background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.03));
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    color:var(--text-2);cursor:pointer;opacity:0;pointer-events:none;
    transition:opacity var(--ease),transform var(--ease),color var(--ease),box-shadow var(--ease);
  }
  .to-top.show{opacity:1;pointer-events:auto}
  .to-top:hover{color:var(--brand);box-shadow:var(--glow-brand);transform:translateY(-2px)}

  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important}
    html{scroll-behavior:auto}
  }

/* roulang page: category1 */
:root{
  --bg-0:#060A13;
  --bg-1:#0B1220;
  --bg-2:#111A2C;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(120,200,255,.35);
  --brand:#38BDF8;
  --brand-2:#6E5BFF;
  --neon:#2DE2C6;
  --cta:#FF8A3D;
  --text:#E9EFFA;
  --text-2:#A7B6D0;
  --text-3:#6C7C99;
  --radius-card:16px;
  --radius-big:24px;
  --radius-btn:12px;
  --shadow-card:0 20px 60px -24px rgba(0,0,0,.85);
  --ease:180ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
.site-body{
  margin:0;
  min-height:100vh;
  color:var(--text);
  font-family:'Noto Sans SC','PingFang SC','HarmonyOS Sans','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:0;
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 480px at 14% -10%, rgba(110,91,255,.26), transparent 62%),
    radial-gradient(760px 420px at 88% 2%, rgba(56,189,248,.16), transparent 60%),
    linear-gradient(180deg,#060A13 0%,#0A1024 46%,#0C0F2B 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
.grid-overlay{
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size:32px 32px;
}
.page-wrap{position:relative;z-index:1}
.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),box-shadow var(--ease)}
a:hover{color:var(--neon)}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,10,19,.74);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(45,226,198,.55), rgba(56,189,248,.45), transparent);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  font-size:19px;
  font-weight:700;
  letter-spacing:-.01em;
  text-decoration:none;
  white-space:nowrap;
}
.logo-a{color:var(--brand)}
.logo-b{color:var(--text)}
.logo:hover .logo-b{color:var(--neon)}
.nav-main{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 13px;
  font-size:15px;
  color:var(--text-2);
  border-radius:10px;
  text-decoration:none;
  transition:color var(--ease),background var(--ease),box-shadow var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);box-shadow:0 1px 0 0 rgba(120,200,255,.35) inset}
.nav-link.active{color:var(--neon)}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--neon);
  box-shadow:0 0 12px rgba(45,226,198,.85);
}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:10px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:var(--text);
  cursor:pointer;
  transition:border-color var(--ease),color var(--ease);
}
.nav-toggle:hover{color:var(--neon);border-color:var(--line-strong)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  padding:14px 24px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  cursor:pointer;
  text-decoration:none;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease),filter var(--ease);
}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:10px}
.btn-cta{
  color:#1A0F04;
  background:linear-gradient(180deg,#FFA35C,#FF8A3D);
  box-shadow:0 0 24px -6px rgba(255,138,61,.65);
  border-radius:999px;
}
.btn-cta:hover{
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 32px -6px rgba(255,138,61,.8);
  color:#1A0F04;
}
.btn-cta:active{transform:translateY(0);box-shadow:0 0 16px -8px rgba(255,138,61,.6)}
.btn-ghost{
  color:var(--text);
  background:transparent;
  border:1px solid var(--line-strong);
}
.btn-ghost:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-1px)}
.btn:focus-visible,.nav-toggle:focus-visible,.faq-q:focus-visible,.nav-link:focus-visible{
  outline:2px solid var(--neon);
  outline-offset:2px;
}
.btn[disabled]{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}

/* ---------- shared blocks ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--neon);
  border:1px solid rgba(45,226,198,.45);
  border-radius:999px;
  background:rgba(45,226,198,.06);
}
.eyebrow-warm{
  color:var(--cta);
  border-color:rgba(255,138,61,.5);
  background:rgba(255,138,61,.08);
}
.glass{
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.14);
}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-title{
  margin:0 0 14px;
  font-size:clamp(26px,3.2vw,34px);
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.01em;
  color:var(--text);
}
.sec-sub{margin:0;font-size:15px;color:var(--text-2);line-height:1.75}
.para{margin:0 0 18px;font-size:16px;color:var(--text-2);line-height:1.9}
.para:last-child{margin-bottom:0}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  height:40px;
  font-size:13px;
  color:var(--text-3);
}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--text-3)}
.crumb .current{color:var(--text-2)}

/* ---------- hero ---------- */
.hero{padding:64px 0 96px}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.hero-title{
  margin:20px 0 18px;
  font-size:clamp(30px,4.6vw,52px);
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.01em;
  color:var(--text);
}
.hero-title .hl{
  color:var(--brand);
  text-shadow:0 0 32px rgba(56,189,248,.45);
}
.hero-sub{
  margin:0 0 30px;
  max-width:520px;
  font-size:17px;
  color:var(--text-2);
  line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  list-style:none;
  margin:0;
  padding:0;
}
.trust-row li{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  font-size:13px;
  color:var(--text-2);
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(255,255,255,.03);
}
.trust-row svg{color:var(--neon);flex:none}
.hero-visual{position:relative}
.hero-shot{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 30px 80px -30px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.16);
  aspect-ratio:16/10;
}
.hero-shot img{width:100%;height:100%;object-fit:cover;display:block}
.hero-shot::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(6,10,19,.05) 0%, rgba(6,10,19,.55) 100%);
}
.hero-band{
  position:absolute;
  left:-8%;right:-8%;bottom:-26px;
  height:2px;
  background:linear-gradient(90deg, transparent, rgba(45,226,198,.9), rgba(56,189,248,.8), transparent);
  filter:blur(.4px);
  box-shadow:0 0 24px rgba(45,226,198,.55);
}
.hero-glow{
  position:absolute;
  width:280px;height:280px;
  right:-60px;top:-70px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(110,91,255,.45), transparent 68%);
  filter:blur(10px);
  pointer-events:none;
}
.include-bar{
  display:flex;
  align-items:center;
  gap:14px;
  padding:18px 22px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:linear-gradient(120deg, rgba(56,189,248,.08), rgba(45,226,198,.04));
  font-size:15px;
  color:var(--text-2);
}
.include-bar strong{color:var(--text);font-weight:600}
.include-bar .dotline{
  flex:none;
  width:8px;height:8px;border-radius:50%;
  background:var(--neon);
  box-shadow:0 0 12px rgba(45,226,198,.9);
}

/* ---------- zigzag ---------- */
.zigzag{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  padding:72px 0;
  border-top:1px solid var(--line);
}
.zigzag:first-of-type{border-top:none;padding-top:0}
.zigzag:last-of-type{padding-bottom:0}
.zigzag.reverse .zz-media{order:2}
.zz-media{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.14);
  aspect-ratio:4/3;
}
.zz-media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform 400ms cubic-bezier(.4,0,.2,1)}
.zz-media:hover img{transform:scale(1.03)}
.zz-num{
  font-family:'JetBrains Mono','Barlow',monospace;
  font-size:40px;
  font-weight:700;
  line-height:1;
  color:var(--neon);
  text-shadow:0 0 26px rgba(45,226,198,.45);
}
.zz-title{
  margin:16px 0 14px;
  font-size:clamp(20px,2.2vw,22px);
  font-weight:700;
  line-height:1.4;
  letter-spacing:-.01em;
  color:var(--text);
}
.point-list{list-style:none;margin:20px 0 0;padding:0}
.point-list li{
  position:relative;
  padding-left:26px;
  margin-bottom:12px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.7;
}
.point-list li:last-child{margin-bottom:0}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:10px;height:1px;
  background:var(--brand);
  box-shadow:0 0 10px rgba(56,189,248,.9);
}

/* ---------- metrics ---------- */
.metric-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.metric-card{
  padding:26px 22px;
  border-radius:var(--radius-card);
  transition:transform var(--ease),box-shadow var(--ease);
}
.metric-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card),0 0 28px -4px rgba(56,189,248,.45), inset 0 1px 0 rgba(255,255,255,.16)}
.metric-num{
  font-family:'JetBrains Mono','Barlow',monospace;
  font-size:44px;
  font-weight:700;
  line-height:1.05;
  color:var(--brand);
}
.metric-num span{font-size:15px;color:var(--text-3);margin-left:6px;font-family:'Noto Sans SC',sans-serif}
.metric-label{margin-top:10px;font-size:15px;font-weight:600;color:var(--text)}
.metric-card p{margin:8px 0 0;font-size:14px;line-height:1.75;color:var(--text-3)}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
  padding:22px 0;
  background:none;
  border:none;
  text-align:left;
  font-family:inherit;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  transition:color var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex:none;
  width:22px;height:22px;
  color:var(--neon);
  transition:transform 320ms cubic-bezier(.4,0,.2,1);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 320ms cubic-bezier(.4,0,.2,1);
}
.faq-a p{
  margin:0 0 22px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}
.faq-item.open{
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.12);
  border-left:3px solid var(--neon);
  border-radius:14px;
  padding:0 22px;
  margin-bottom:12px;
  box-shadow:var(--shadow-card);
}
.faq-item.open .faq-icon{transform:rotate(180deg)}
.faq-item.open .faq-a{max-height:360px}

/* ---------- cta / form ---------- */
.cta-band{
  position:relative;
  border-radius:var(--radius-big);
  border:1px solid rgba(255,138,61,.28);
  overflow:hidden;
  padding:56px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:start;
  background:linear-gradient(150deg, rgba(255,138,61,.10), rgba(11,18,32,.9) 55%);
  box-shadow:var(--shadow-card);
}
.cta-band::before{
  content:"";
  position:absolute;
  width:420px;height:420px;
  left:-120px;top:-160px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(255,138,61,.35), transparent 68%);
  filter:blur(6px);
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:1}
.cta-title{
  margin:18px 0 14px;
  font-size:clamp(24px,3vw,32px);
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.01em;
  color:var(--text);
}
.field{margin-bottom:16px}
.field label{
  display:block;
  margin-bottom:8px;
  font-size:13px;
  color:var(--text-2);
}
.field input,.field select{
  width:100%;
  padding:13px 14px;
  font-family:inherit;
  font-size:15px;
  color:var(--text);
  background:rgba(6,10,19,.6);
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  transition:border-color var(--ease),box-shadow var(--ease);
  appearance:none;
}
.field select{background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);background-position:calc(100% - 20px) 22px,calc(100% - 14px) 22px;background-size:6px 6px;background-repeat:no-repeat}
.field input:focus,.field select:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(56,189,248,.18);
}
.field input::placeholder{color:var(--text-3)}
.form-note{margin:10px 0 0;font-size:13px;color:var(--text-3)}
.form-legal{margin:6px 0 0;font-size:12px;color:var(--text-3)}
.form-panel{
  border-radius:var(--radius-card);
  padding:28px;
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  margin-top:112px;
  background:linear-gradient(180deg,#050810,#03060D);
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(45,226,198,.5), rgba(56,189,248,.4), transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:40px;
  padding:64px 0 40px;
}
.footer-title{
  margin-bottom:14px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--text);
}
.footer-link{
  display:block;
  padding:5px 0;
  font-size:14px;
  color:var(--text-2);
  text-decoration:none;
  transition:color var(--ease),transform var(--ease);
}
.footer-link:hover{color:var(--brand);transform:translateX(2px)}
.footer-text{margin:0;font-size:14px;line-height:1.75;color:var(--text-3)}
.footer-contact{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-2);
}
.footer-contact svg{color:var(--brand);flex:none}
.footer-bottom{
  padding:22px 0;
  border-top:1px solid var(--line);
  text-align:center;
  font-size:13px;
  color:var(--text-3);
}

/* ---------- drawer / to-top ---------- */
.drawer{
  position:fixed;
  inset:0;
  z-index:80;
  background:rgba(5,8,16,.97);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  opacity:0;
  pointer-events:none;
  transform:translateY(-10px);
  transition:opacity 260ms cubic-bezier(.4,0,.2,1),transform 260ms cubic-bezier(.4,0,.2,1);
}
.drawer.open{opacity:1;pointer-events:auto;transform:none}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:56px;
  padding:0 16px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text);
  cursor:pointer;
}
.drawer-close:hover{color:var(--neon);border-color:var(--line-strong)}
.drawer-nav{padding:12px 16px}
.drawer-link{
  display:flex;
  align-items:center;
  height:56px;
  padding:0 8px;
  font-size:17px;
  color:var(--text-2);
  border-bottom:1px solid rgba(255,255,255,.06);
  opacity:0;
  transform:translateY(8px);
  transition:opacity 300ms ease,transform 300ms ease,color var(--ease);
}
.drawer.open .drawer-link{opacity:1;transform:none}
.drawer.open .drawer-link:nth-child(1){transition-delay:40ms}
.drawer.open .drawer-link:nth-child(2){transition-delay:90ms}
.drawer.open .drawer-link:nth-child(3){transition-delay:140ms}
.drawer.open .drawer-link:nth-child(4){transition-delay:190ms}
.drawer.open .drawer-link:nth-child(5){transition-delay:240ms}
.drawer-link.active{color:var(--neon)}
.drawer-cta{margin:20px 16px 0;width:calc(100% - 32px)}
.to-top{
  position:fixed;
  right:24px;bottom:24px;
  z-index:70;
  width:44px;height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  color:var(--text);
  background:linear-gradient(160deg, rgba(255,255,255,.09), rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  cursor:pointer;
  opacity:0;
  pointer-events:none;
  transition:opacity 260ms ease,box-shadow var(--ease),color var(--ease);
}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{color:var(--neon);box-shadow:0 0 24px -4px rgba(56,189,248,.6)}

/* ---------- motion ---------- */
.fade-up{opacity:0;transform:translateY(16px);transition:opacity 400ms ease,transform 400ms cubic-bezier(.4,0,.2,1)}
.fade-up.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .fade-up{opacity:1;transform:none;transition:none}
  .zz-media img,.btn,.metric-card{transition:none}
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-main{display:none}
  .nav-toggle{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:-1}
  .zigzag{grid-template-columns:1fr;gap:32px;padding:56px 0}
  .zigzag.reverse .zz-media{order:0}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{grid-template-columns:1fr;gap:32px;padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container-x{padding-left:24px;padding-right:24px}
  .section{padding:64px 0}
  .section-tight{padding:48px 0}
  .hero{padding:40px 0 64px}
  .sec-head{margin-bottom:32px}
  .site-footer{margin-top:72px}
  .faq-item.open{padding:0 16px}
}
@media (max-width:520px){
  .container-x{padding-left:16px;padding-right:16px}
  .metric-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-band{padding:28px 20px;border-radius:18px}
  .hero-actions .btn{width:100%}
  .to-top{right:16px;bottom:16px}
}

/* roulang page: category2 */
:root{
  --bg-0:#060A13;
  --bg-1:#0B1220;
  --bg-2:#111A2C;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(120,200,255,.35);
  --brand:#38BDF8;
  --brand-2:#6E5BFF;
  --neon:#2DE2C6;
  --cta:#FF8A3D;
  --text:#E9EFFA;
  --text-2:#A7B6D0;
  --text-3:#6C7C99;
  --r-card:16px;
  --r-block:24px;
  --r-btn:12px;
  --shadow-card:0 20px 60px -24px rgba(0,0,0,.85);
  --t:180ms cubic-bezier(.4,0,.2,1);
  --font-sans:'Noto Sans SC','PingFang SC','HarmonyOS Sans','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono','Barlow',ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg-0);
  background-image:linear-gradient(180deg,#060A13 0%,#0A1024 42%,#150F33 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:32px 32px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 78%);
  mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 78%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(620px 320px at 50% -70px,rgba(56,189,248,.16),transparent 72%);
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--t),box-shadow var(--t)}
a:hover{color:var(--neon)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.35}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none;padding:0}
::selection{background:rgba(45,226,198,.28);color:#fff}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px;position:relative;z-index:1}
@media (min-width:640px){.container-x{padding-left:24px;padding-right:24px}}
@media (min-width:1024px){.container-x{padding-left:32px;padding-right:32px}}
@media (min-width:1280px){.container-x{max-width:1280px;padding-left:40px;padding-right:40px}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,19,.74);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(56,189,248,.55) 30%,rgba(45,226,198,.5) 65%,transparent);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
.logo{display:inline-flex;align-items:baseline;gap:1px;font-size:19px;font-weight:800;letter-spacing:.01em;color:var(--text);white-space:nowrap}
.logo:hover{color:var(--text)}
.logo-a{color:var(--brand)}
.logo-b{color:var(--neon);text-shadow:0 0 18px rgba(45,226,198,.45)}
.nav-main{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:8px 0;transition:color var(--t)
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--neon));opacity:0;transform:scaleX(.4);
  transition:opacity var(--t),transform var(--t)
}
.nav-link:hover{color:var(--text);text-shadow:0 1px 10px rgba(56,189,248,.5)}
.nav-link:hover::after{opacity:.5;transform:scaleX(1)}
.nav-link.active{color:var(--neon)}
.nav-link.active::after{opacity:1;transform:scaleX(1);box-shadow:0 0 14px rgba(45,226,198,.8)}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);color:var(--text);background:rgba(255,255,255,.03);transition:all var(--t)
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--brand)}
.drawer-close{display:none}

@media (max-width:1023px){
  .nav-main{
    position:fixed;top:0;left:0;right:0;bottom:0;z-index:70;
    flex-direction:column;align-items:flex-start;justify-content:flex-start;
    padding:84px 24px 32px;gap:0;
    background:rgba(6,10,19,.97);
    backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .28s ease,transform .28s ease,visibility .28s ease;
  }
  .nav-main.open{opacity:1;visibility:visible;transform:none}
  .nav-main .nav-link{
    width:100%;height:56px;display:flex;align-items:center;font-size:17px;color:var(--text-2);
    border-bottom:1px solid var(--line);opacity:0;transform:translateY(10px)
  }
  .nav-main .nav-link::after{display:none}
  .nav-main .nav-link.active{color:var(--neon)}
  .nav-main.open .nav-link{animation:fadeUpItem .4s ease forwards}
  .nav-main.open .nav-link:nth-child(1){animation-delay:.05s}
  .nav-main.open .nav-link:nth-child(2){animation-delay:.11s}
  .nav-main.open .nav-link:nth-child(3){animation-delay:.17s}
  .nav-main.open .nav-link:nth-child(4){animation-delay:.23s}
  .nav-main.open .nav-link:nth-child(5){animation-delay:.29s}
  .nav-toggle{display:inline-flex}
  .nav-toggle.is-open{position:fixed;top:13px;right:16px;z-index:80;border-color:var(--line-strong)}
}
@keyframes fadeUpItem{to{opacity:1;transform:none}}
@media (min-width:1024px) and (max-width:1179px){
  .nav-main{gap:18px}
  .nav-link{font-size:14px}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1px solid transparent;
  padding:13px 24px;font-size:15px;font-weight:600;line-height:1.2;
  transition:transform var(--t),box-shadow var(--t),filter var(--t),color var(--t),border-color var(--t),background var(--t);
}
.btn:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-cta{
  background:linear-gradient(135deg,#FFA05F,#FF7A22);color:#221004;
  border-radius:999px;box-shadow:0 0 24px -6px rgba(255,138,61,.65)
}
.btn-cta:hover{color:#221004;filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 34px -4px rgba(255,138,61,.85)}
.btn-cta:active{transform:translateY(0);box-shadow:0 0 18px -8px rgba(255,138,61,.7)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{color:var(--brand);border-color:var(--brand);box-shadow:0 0 20px -8px rgba(56,189,248,.8)}
.btn-ghost:active{transform:translateY(0)}
.btn[disabled]{opacity:.45;box-shadow:none;transform:none;cursor:not-allowed}
.btn-block{width:100%}
@media (min-width:640px){.btn-block{width:auto}}

/* ---------- generic pieces ---------- */
.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.14);
}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:12px;line-height:1.6;
  border:1px solid rgba(45,226,198,.5);color:var(--neon);background:rgba(45,226,198,.06);
  letter-spacing:.02em;
}
.pill-warm{border-color:rgba(255,138,61,.65);color:var(--cta);background:rgba(255,138,61,.08)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.section{padding:56px 0;position:relative}
@media (min-width:1024px){.section{padding:96px 0}}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,3.4vw,34px)}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15px;line-height:1.8}
.eyebrow{
  display:inline-block;font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--text-3);margin-bottom:14px
}
.divider-glow{height:1px;background:linear-gradient(90deg,transparent,rgba(120,200,255,.35),transparent)}

.breadcrumb-wrap{padding-top:18px;position:relative;z-index:1}
.breadcrumb{
  display:flex;align-items:center;gap:8px;height:40px;font-size:13px;color:var(--text-3);
  flex-wrap:wrap
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--text-3)}
.breadcrumb .current{color:var(--text-2)}

/* ---------- banner ---------- */
.banner-section{padding-top:26px}
.cat-banner{
  position:relative;border-radius:var(--r-block);overflow:hidden;
  border:1px solid var(--line-strong);
  min-height:360px;display:flex;align-items:center;
  box-shadow:0 30px 80px -40px rgba(56,189,248,.55),inset 0 1px 0 rgba(255,255,255,.14)
}
.cat-banner-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  filter:saturate(115%)
}
.cat-banner-mask{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(6,10,19,.96) 0%,rgba(11,18,32,.86) 46%,rgba(110,91,255,.42) 100%)
}
.cat-banner-line{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--brand),var(--neon),transparent);
  opacity:.85
}
.cat-banner-inner{position:relative;z-index:2;padding:44px 26px;max-width:760px}
@media (min-width:1024px){.cat-banner-inner{padding:64px 56px;max-width:820px}}
.cat-banner h1{
  font-size:clamp(30px,5vw,52px);margin:18px 0 0;line-height:1.24;
  background:linear-gradient(120deg,#FFFFFF 12%,#BFE6FF 52%,#8FF3E2 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent
}
.cat-banner .lead{margin-top:16px;color:var(--text-2);font-size:16px;line-height:1.85;max-width:620px}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.banner-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.badge{
  display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:999px;
  font-size:13px;color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,.03)
}
.badge svg{color:var(--neon);flex:none}
.cat-note{
  margin-top:18px;color:var(--text-2);font-size:14px;line-height:1.8;
  padding-left:14px;border-left:2px solid var(--line-strong)
}

/* ---------- info cards grid ---------- */
.card-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr);gap:22px}}
.info-card{
  padding:26px 24px;position:relative;overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t)
}
.info-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand),transparent);opacity:.6
}
.info-card:hover{transform:translateY(-3px);border-color:rgba(120,200,255,.4);box-shadow:var(--shadow-card),0 0 28px -4px rgba(56,189,248,.45)}
.card-icon{
  display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:14px;
  border:1px solid rgba(45,226,198,.35);background:rgba(45,226,198,.07);color:var(--neon);margin-bottom:16px
}
.info-card h3{font-size:18px;line-height:1.5;margin-bottom:10px}
.info-card p{color:var(--text-2);font-size:15px;line-height:1.75}

/* ---------- stepper ---------- */
.step-wrap{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:1024px){.step-wrap{grid-template-columns:repeat(3,1fr);gap:44px}}
.step-card{
  position:relative;padding:28px 24px;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(17,26,44,.86),rgba(11,18,32,.7));
  border:1px solid var(--line);
  transition:border-color var(--t),box-shadow var(--t)
}
.step-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;border-radius:2px 2px 0 0;
  background:linear-gradient(90deg,var(--brand),var(--neon));opacity:.85
}
.step-card:hover{border-color:var(--line-strong);box-shadow:0 0 28px -8px rgba(56,189,248,.55)}
.step-num{font-family:var(--font-mono);font-size:40px;font-weight:700;color:var(--neon);line-height:1;letter-spacing:-.02em}
.step-card h3{font-size:20px;margin:14px 0 10px}
.step-card p{font-size:15px;color:var(--text-2);line-height:1.75}
@media (min-width:1024px){
  .step-card:not(:last-child)::after{
    content:"";position:absolute;top:58px;right:-32px;width:20px;height:2px;
    background:linear-gradient(90deg,var(--brand),var(--neon));
    box-shadow:0 0 12px rgba(45,226,198,.75)
  }
}
@media (max-width:1023px){
  .step-wrap{position:relative}
  .step-card:not(:last-child)::before{
    content:"";position:absolute;top:0;left:-13px;width:2px;height:100%;
    background:linear-gradient(180deg,var(--neon),transparent);
  }
  .step-card{margin-left:14px}
}

/* ---------- proof ---------- */
.proof-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:1024px){.proof-grid{grid-template-columns:3fr 2fr;gap:32px;align-items:start}}
.proof-panel{padding:30px 26px;border-radius:var(--r-block);position:relative;overflow:hidden}
.proof-panel::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,189,248,.28),transparent 68%);pointer-events:none
}
.proof-cover{border-radius:14px;overflow:hidden;border:1px solid var(--line);margin-bottom:22px}
.proof-cover img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
@media (min-width:768px){.stats{grid-template-columns:repeat(3,1fr)}}
.stat-num{font-family:var(--font-mono);font-size:clamp(34px,5vw,48px);font-weight:700;color:var(--neon);line-height:1.1}
.stat-num.alt{color:var(--brand)}
.stat-unit{font-size:14px;color:var(--text-3);margin-left:4px;font-family:var(--font-sans)}
.stat-label{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.7}
.quote-list{display:grid;gap:18px}
.quote{
  position:relative;padding:24px 22px 22px 30px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.12)
}
.quote::before{
  content:"“";position:absolute;left:12px;top:2px;font-size:44px;line-height:1;
  color:rgba(45,226,198,.6);font-family:Georgia,serif
}
.quote p{font-size:15px;color:var(--text-2);line-height:1.8}
.quote .who{
  margin-top:12px;font-size:13px;color:var(--text-3);
  display:flex;align-items:center;gap:8px
}
.quote .who span.dot{width:5px;height:5px;border-radius:50%;background:var(--neon);display:inline-block}

/* ---------- faq ---------- */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{
  border-bottom:1px solid var(--line);
  border-radius:14px;
  transition:background var(--t),border-color var(--t),padding var(--t)
}
.faq-item.open{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.12);
  border-left:3px solid var(--neon);
  padding:0 18px;
  box-shadow:var(--shadow-card)
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;padding:20px 4px;font-size:17px;font-weight:600;color:var(--text);
  transition:color var(--t)
}
.faq-q:hover{color:var(--brand)}
.faq-q:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:8px}
.faq-arrow{flex:none;color:var(--neon);transition:transform .3s cubic-bezier(.4,0,.2,1)}
.faq-item.open .faq-arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s cubic-bezier(.4,0,.2,1)}
.faq-a-inner{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- cta / form ---------- */
.cta-band{
  position:relative;border-radius:var(--r-block);overflow:hidden;
  border:1px solid var(--line-strong);
  background:linear-gradient(140deg,rgba(17,26,44,.94),rgba(11,18,32,.9) 55%,rgba(110,91,255,.28));
  box-shadow:0 30px 90px -46px rgba(255,138,61,.75)
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(520px 300px at 88% 110%,rgba(255,138,61,.22),transparent 70%)
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,138,61,.7),transparent)
}
.cta-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:32px;padding:36px 24px
}
@media (min-width:1024px){.cta-inner{grid-template-columns:1fr 420px;gap:48px;padding:56px 52px;align-items:start}}
.cta-inner h2{font-size:clamp(24px,3.4vw,34px)}
.cta-inner .lead{margin-top:14px;color:var(--text-2);font-size:15px;line-height:1.85;max-width:560px}
.cta-points{margin-top:22px;display:grid;gap:12px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.cta-points svg{color:var(--neon);flex:none;margin-top:6px}
.form-card{
  padding:26px 22px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.025));
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.14)
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;letter-spacing:.01em}
.field input,.field select{
  width:100%;padding:12px 14px;border-radius:var(--r-btn);
  background:rgba(6,10,19,.72);border:1px solid var(--line);color:var(--text);
  font-size:15px;line-height:1.5;transition:border-color var(--t),box-shadow var(--t)
}
.field input::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(56,189,248,.18)
}
.field select option{background:#0B1220;color:var(--text)}
.form-note{margin-top:12px;font-size:12px;color:var(--text-3);line-height:1.7}
.form-tip{margin-top:10px;font-size:12px;color:var(--neon);min-height:18px}
.form-legal{margin-top:8px;font-size:12px;color:var(--text-3);line-height:1.7}

/* ---------- footer ---------- */
.site-footer{
  margin-top:64px;position:relative;z-index:1;
  background:linear-gradient(180deg,rgba(5,8,16,.92),rgba(3,5,11,.98));
  border-top:1px solid var(--line)
}
.site-footer::before{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(56,189,248,.5),rgba(45,226,198,.45),transparent)
}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:32px;padding:52px 0 34px
}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}}
.footer-title{font-size:13px;letter-spacing:.1em;color:var(--text-3);margin-bottom:16px;font-family:var(--font-mono)}
.footer-link{display:block;font-size:14px;color:var(--text-2);padding:6px 0;transition:color var(--t),transform var(--t)}
.footer-link:hover{color:var(--brand);transform:translateX(2px)}
.footer-text{font-size:14px;color:var(--text-2);line-height:1.8;max-width:330px}
.footer-contact{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.footer-contact svg{color:var(--neon);flex:none}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;text-align:center;
  font-size:13px;color:var(--text-3);line-height:1.8
}

/* ---------- back to top ---------- */
.back-top{
  position:fixed;right:18px;bottom:22px;z-index:70;
  width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(17,26,44,.7);border:1px solid var(--line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  color:var(--text-2);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s ease,box-shadow var(--t),color var(--t)
}
.back-top.show{opacity:1;visibility:visible;transform:none}
.back-top:hover{color:var(--neon);box-shadow:0 0 22px -4px rgba(45,226,198,.7)}
.back-top:focus-visible{outline:2px solid var(--neon);outline-offset:2px}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s ease,transform .4s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: category3 */
:root{
  --bg-0:#060A13;
  --bg-1:#0B1220;
  --bg-2:#111A2C;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(120,200,255,.35);
  --brand:#38BDF8;
  --brand-2:#6E5BFF;
  --neon:#2DE2C6;
  --cta:#FF8A3D;
  --text:#E9EFFA;
  --text-2:#A7B6D0;
  --text-3:#6C7C99;
  --r-card:16px;
  --r-block:24px;
  --r-btn:12px;
  --shadow-card:0 20px 60px -24px rgba(0,0,0,.85);
  --glow-brand:0 0 28px -4px rgba(56,189,248,.45);
  --glow-cta:0 0 24px -6px rgba(255,138,61,.65);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Noto Sans SC','PingFang SC','HarmonyOS Sans','Microsoft YaHei',sans-serif;
  color:var(--text);
  font-size:16px;
  line-height:1.9;
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 420px at 10% -6%, rgba(56,189,248,.16), transparent 62%),
    radial-gradient(780px 420px at 90% 2%, rgba(110,91,255,.20), transparent 64%),
    linear-gradient(180deg,#060A13 0%,#080D1A 40%,#0A0E22 74%,#0B1024 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size:32px 32px;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color 180ms var(--ease), text-shadow 180ms var(--ease)}
a:hover{color:var(--neon);text-shadow:0 1px 0 rgba(45,226,198,.45)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.35;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px}

.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:16px;
  padding-right:16px;
  position:relative;
  z-index:1;
}
@media (min-width:640px){.container-x{padding-left:24px;padding-right:24px}}
@media (min-width:1024px){.container-x{padding-left:32px;padding-right:32px}}
@media (min-width:1280px){.container-x{max-width:1280px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,10,19,.78);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(56,189,248,.55), rgba(45,226,198,.5), transparent);
  opacity:.7;
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:18px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  font-size:19px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--text);
  white-space:nowrap;
}
.logo:hover{color:var(--text);text-shadow:none}
.logo-a{color:var(--brand)}
.logo-b{color:var(--text);position:relative}
.logo-b::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-4px;
  height:2px;
  background:linear-gradient(90deg,var(--neon),transparent);
  border-radius:2px;
}
.nav-main{
  display:none;
  align-items:center;
  gap:4px;
  margin-left:14px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:68px;
  padding:0 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:8px;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:14px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--neon),var(--brand));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform 180ms var(--ease);
}
.nav-link:hover{color:var(--text);text-shadow:0 1px 0 rgba(56,189,248,.35)}
.nav-link:hover::after{transform:scaleX(1);opacity:.5}
.nav-link.active{color:var(--neon);text-shadow:0 0 14px rgba(45,226,198,.5)}
.nav-link.active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(45,226,198,.75)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--text);
  cursor:pointer;
  transition:all 180ms var(--ease);
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--brand);box-shadow:var(--glow-brand)}
@media (min-width:1024px){
  .nav-main{display:flex}
  .nav-toggle{display:none}
}

/* 移动端抽屉 */
@media (max-width:1023px){
  .nav-main{
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    position:fixed;
    inset:68px 0 0 0;
    margin:0;
    padding:14px 16px 40px;
    background:rgba(6,10,19,.97);
    backdrop-filter:blur(16px);
    border-top:1px solid var(--line);
    transform:translateY(-8px);
    opacity:0;
    visibility:hidden;
    transition:opacity 200ms var(--ease), transform 200ms var(--ease), visibility 200ms;
    overflow-y:auto;
  }
  .nav-main.open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-main .nav-link{
    height:56px;
    font-size:17px;
    padding:0 8px;
    color:var(--text);
    border-bottom:1px solid rgba(255,255,255,.06);
    animation:fadeUpItem 320ms var(--ease) both;
  }
  .nav-main .nav-link::after{display:none}
  .nav-main .nav-link.active{color:var(--neon)}
  .nav-main .nav-link:nth-child(2){animation-delay:40ms}
  .nav-main .nav-link:nth-child(3){animation-delay:80ms}
  .nav-main .nav-link:nth-child(4){animation-delay:120ms}
  .nav-main .nav-link:nth-child(5){animation-delay:160ms}
}
@keyframes fadeUpItem{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:12px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:all 180ms var(--ease);
  text-decoration:none;
  white-space:nowrap;
}
.btn:hover{text-shadow:none}
.btn-cta{
  background:linear-gradient(135deg,#FFA35C,#FF7A28);
  color:#20120A;
  box-shadow:var(--glow-cta);
}
.btn-cta:hover{
  color:#1A0E06;
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 34px -4px rgba(255,138,61,.75);
}
.btn-cta:active{transform:translateY(0);box-shadow:0 0 18px -8px rgba(255,138,61,.6)}
.btn-ghost{
  background:transparent;
  border:1px solid var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{
  color:var(--brand);
  border-color:var(--brand);
  box-shadow:var(--glow-brand);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(0);box-shadow:none}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:12px}
.btn[disabled]{opacity:.4;cursor:not-allowed;box-shadow:none;transform:none}

/* ---------- 通用 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  border:1px solid rgba(45,226,198,.4);
  background:rgba(45,226,198,.08);
  color:var(--neon);
  font-size:12px;
  letter-spacing:.04em;
  line-height:1.6;
}
.badge-warm{
  border-color:rgba(255,138,61,.5);
  background:rgba(255,138,61,.12);
  color:#FFC08D;
}
.glass{
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.14);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.section{padding-top:56px;padding-bottom:56px}
@media (min-width:1024px){.section{padding-top:96px;padding-bottom:96px}}
.section-title{font-size:clamp(24px,3.2vw,34px)}
.lead{color:var(--text-2);font-size:16px;line-height:1.9}
.muted{color:var(--text-3);font-size:14px;line-height:1.75}
.num{font-family:'JetBrains Mono','Barlow',ui-monospace,monospace;font-weight:700}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  min-height:40px;
  padding-top:18px;
  font-size:13px;
  color:var(--text-3);
}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:rgba(255,255,255,.22)}
.crumb .cur{color:var(--text-2)}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;
  padding:40px 0 8px;
  text-align:center;
}
.cat-hero::before{
  content:"";
  position:absolute;
  left:50%;
  top:-20px;
  width:min(760px,92%);
  height:1px;
  transform:translateX(-50%);
  background:linear-gradient(90deg,transparent,rgba(56,189,248,.7),rgba(45,226,198,.7),transparent);
  box-shadow:0 0 22px rgba(56,189,248,.6);
}
.cat-hero h1{
  font-size:clamp(30px,5vw,52px);
  margin:20px auto 0;
  max-width:880px;
}
.cat-hero .sub{
  margin:16px auto 0;
  max-width:640px;
  color:var(--text-2);
  font-size:16px;
  line-height:1.85;
}
.cat-hero .scope{
  margin:14px auto 0;
  max-width:640px;
  color:var(--text-3);
  font-size:14px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:center;
  margin-top:26px;
}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:center;
  margin-top:26px;
}
.trust-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  font-size:13px;
  color:var(--text-2);
}
.trust-pill svg{color:var(--neon);flex:none}

/* ---------- 索引 + 长文 ---------- */
.split{
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
  padding-top:48px;
  padding-bottom:56px;
}
@media (min-width:1024px){
  .split{grid-template-columns:240px minmax(0,1fr);gap:56px;padding-top:72px;padding-bottom:96px}
}
.toc-wrap{position:relative}
.toc{
  display:flex;
  gap:8px;
  overflow-x:auto;
  padding-bottom:8px;
  scrollbar-width:thin;
}
.toc a{
  flex:0 0 auto;
  padding:9px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text-2);
  font-size:13px;
  white-space:nowrap;
  transition:all 180ms var(--ease);
}
.toc a:hover{border-color:var(--line-strong);color:var(--brand);text-shadow:none}
.toc a.active{
  color:var(--neon);
  border-color:rgba(45,226,198,.55);
  background:rgba(45,226,198,.1);
  box-shadow:0 0 16px -4px rgba(45,226,198,.5);
}
@media (min-width:1024px){
  .toc{
    position:sticky;
    top:96px;
    flex-direction:column;
    overflow:visible;
    gap:6px;
    padding:18px;
    border-radius:var(--r-card);
    border:1px solid rgba(255,255,255,.10);
    background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.015));
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    box-shadow:var(--shadow-card);
  }
  .toc::before{
    content:"本页索引";
    font-size:12px;
    letter-spacing:.16em;
    color:var(--text-3);
    padding:0 4px 8px;
    border-bottom:1px solid var(--line);
    margin-bottom:4px;
  }
  .toc a{
    border-radius:10px;
    border-color:transparent;
    background:transparent;
    padding:10px 12px;
    border-left:2px solid transparent;
    font-size:14px;
  }
  .toc a:hover{background:rgba(255,255,255,.04)}
  .toc a.active{
    border-left-color:var(--neon);
    border-radius:0 10px 10px 0;
    background:rgba(45,226,198,.08);
    box-shadow:none;
  }
}

.article-flow{display:flex;flex-direction:column;gap:44px}
@media (min-width:1024px){.article-flow{gap:56px}}
.flow-block{
  padding-bottom:44px;
  border-bottom:1px solid var(--line);
}
.flow-block:last-child{border-bottom:none;padding-bottom:0}
.flow-block h2{
  position:relative;
  font-size:clamp(21px,2.6vw,28px);
  padding-left:14px;
  margin-bottom:16px;
}
.flow-block h2::before{
  content:"";
  position:absolute;
  left:0;top:.28em;bottom:.28em;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--neon),var(--brand));
  box-shadow:0 0 14px rgba(45,226,198,.65);
}
.flow-block h3{
  font-size:18px;
  margin:26px 0 10px;
  color:var(--text);
}
.flow-block p{color:var(--text-2);margin-bottom:14px}
.flow-block p:last-child{margin-bottom:0}
.flow-block strong{color:var(--text)}

.step-list{display:flex;flex-direction:column;gap:14px;margin-top:8px}
.step-item{
  display:flex;
  gap:16px;
  padding:18px;
  border-radius:var(--r-card);
  border:1px solid rgba(255,255,255,.10);
  background:linear-gradient(160deg, rgba(255,255,255,.055), rgba(255,255,255,.015));
  transition:all 180ms var(--ease);
}
.step-item:hover{
  border-color:var(--line-strong);
  box-shadow:var(--glow-brand);
  transform:translateY(-1px);
}
.step-item .idx{
  flex:none;
  font-family:'JetBrains Mono','Barlow',ui-monospace,monospace;
  font-size:22px;
  font-weight:700;
  color:var(--neon);
  line-height:1.2;
  min-width:38px;
}
.step-item h3{margin:0 0 6px;font-size:17px}
.step-item p{font-size:15px;line-height:1.8;color:var(--text-2);margin:0}

.method-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
  margin-top:18px;
}
@media (min-width:640px){.method-grid{grid-template-columns:repeat(2,1fr)}}
.method-card{
  padding:20px;
  border-radius:var(--r-card);
  border:1px solid rgba(255,255,255,.10);
  background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.015));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:all 180ms var(--ease);
}
.method-card:hover{
  border-color:var(--line-strong);
  box-shadow:var(--shadow-card), var(--glow-brand);
  transform:translateY(-2px);
}
.method-card .mc-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.method-card .mc-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;
  border:1px solid rgba(56,189,248,.4);
  background:rgba(56,189,248,.10);
  color:var(--brand);
  flex:none;
}
.method-card h3{margin:0;font-size:17px}
.method-card p{font-size:15px;line-height:1.8;color:var(--text-2);margin:0}
.method-card .tag{
  display:inline-block;
  margin-top:12px;
  font-family:'JetBrains Mono','Barlow',ui-monospace,monospace;
  font-size:12px;
  color:var(--text-3);
  letter-spacing:.06em;
}

.figure-block{
  margin-top:20px;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.10);
  box-shadow:var(--shadow-card);
}
.figure-block img{width:100%;height:auto;object-fit:cover;aspect-ratio:16/9}
.figure-block figcaption{
  padding:12px 16px;
  font-size:13px;
  color:var(--text-3);
  background:rgba(255,255,255,.03);
  border-top:1px solid var(--line);
}

.check-list{display:flex;flex-direction:column;gap:10px;margin-top:10px}
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}
.check-list li svg{flex:none;margin-top:6px;color:var(--neon)}

.note{
  margin-top:20px;
  padding:18px 20px;
  border-radius:var(--r-card);
  border:1px solid rgba(255,138,61,.35);
  background:linear-gradient(160deg, rgba(255,138,61,.12), rgba(255,138,61,.03));
  font-size:15px;
  line-height:1.8;
  color:#FFD5B4;
}
.note strong{color:#FFC08D}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
  margin-top:8px;
}
@media (min-width:900px){.stat-strip{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat-cell{
  padding:20px;
  border-radius:var(--r-card);
  border:1px solid rgba(255,255,255,.10);
  background:linear-gradient(160deg, rgba(255,255,255,.055), rgba(255,255,255,.015));
}
.stat-cell .v{
  font-family:'JetBrains Mono','Barlow',ui-monospace,monospace;
  font-size:clamp(30px,5vw,44px);
  font-weight:700;
  color:var(--neon);
  line-height:1.1;
}
.stat-cell .v.b{color:var(--brand)}
.stat-cell .l{margin-top:8px;font-size:14px;color:var(--text-2)}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  margin:0 0 72px;
  padding:34px 24px;
  border-radius:var(--r-block);
  border:1px solid rgba(255,138,61,.28);
  background:
    radial-gradient(520px 260px at 12% 20%, rgba(255,138,61,.20), transparent 68%),
    linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
@media (min-width:1024px){.cta-band{padding:52px 48px;margin-bottom:120px}}
.cta-band .cta-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
}
@media (min-width:1024px){.cta-band .cta-grid{grid-template-columns:minmax(0,1fr) 420px;gap:56px;align-items:center}}
.cta-band h2{font-size:clamp(23px,3vw,32px);margin-top:14px}
.cta-band p{color:var(--text-2);margin-top:14px;font-size:15px;line-height:1.85}

.form-card{
  padding:24px;
  border-radius:var(--r-card);
  border:1px solid rgba(255,255,255,.12);
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.14);
}
.field{margin-bottom:16px}
.field label{
  display:block;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:6px;
}
.field input,
.field select{
  width:100%;
  padding:12px 14px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(6,10,19,.6);
  color:var(--text);
  font-size:15px;
  transition:all 180ms var(--ease);
}
.field input::placeholder{color:var(--text-3)}
.field input:focus,
.field select:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(56,189,248,.16);
}
.field .hint{font-size:12px;color:var(--text-3);margin-top:6px}
.field .err{font-size:12px;color:#FF8A8A;margin-top:6px;display:none}
.field.invalid input,
.field.invalid select{border-color:#FF6B6B}
.field.invalid .err{display:block}
.form-foot{display:flex;flex-direction:column;gap:10px;margin-top:20px}
@media (min-width:640px){.form-foot{flex-direction:row;align-items:center}}
.form-note{font-size:12px;color:var(--text-3);line-height:1.6}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:0;
  background:#04070E;
  border-top:1px solid var(--line);
  padding-top:56px;
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:-1px;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(56,189,248,.55), rgba(110,91,255,.5), transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  padding-bottom:44px;
}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-title{
  font-size:14px;
  font-weight:600;
  color:var(--text);
  margin-bottom:14px;
  letter-spacing:.02em;
}
.footer-link{
  display:block;
  font-size:14px;
  color:var(--text-3);
  padding:5px 0;
  transition:all 180ms var(--ease);
}
.footer-link:hover{color:var(--brand);transform:translateX(2px);text-shadow:none}
.footer-text{font-size:13px;line-height:1.85;color:var(--text-3);max-width:340px}
.footer-contact{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-2);
}
.footer-contact svg{color:var(--brand);flex:none}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  text-align:center;
  font-size:13px;
  color:var(--text-3);
}

/* ---------- 返回顶部 ---------- */
#toTop{
  position:fixed;
  right:18px;
  bottom:22px;
  width:44px;height:44px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid rgba(255,255,255,.14);
  background:linear-gradient(160deg, rgba(255,255,255,.10), rgba(255,255,255,.03));
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  color:var(--text-2);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:all 220ms var(--ease);
  z-index:70;
}
#toTop.show{opacity:1;visibility:visible;transform:translateY(0)}
#toTop:hover{color:var(--brand);box-shadow:var(--glow-brand);border-color:var(--line-strong)}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 400ms var(--ease), transform 400ms var(--ease)}
.reveal.in{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: category4 */
:root{
  --bg-0:#060A13;
  --bg-1:#0B1220;
  --bg-2:#111A2C;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(120,200,255,.35);
  --brand:#38BDF8;
  --brand-2:#6E5BFF;
  --neon:#2DE2C6;
  --cta:#FF8A3D;
  --text:#E9EFFA;
  --text-2:#A7B6D0;
  --text-3:#6C7C99;
  --r-card:16px;
  --r-lg:24px;
  --r-btn:12px;
  --shadow-card:0 20px 60px -24px rgba(0,0,0,.85);
  --glow-brand:0 0 28px -4px rgba(56,189,248,.45);
  --glow-cta:0 0 24px -6px rgba(255,138,61,.65);
  --ease:cubic-bezier(.4,0,.2,1);
  --mono:'JetBrains Mono','Barlow',ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:'Noto Sans SC','PingFang SC','HarmonyOS Sans','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:0;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:32px 32px;
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(680px 420px at 12% -6%, rgba(56,189,248,.16), transparent 62%),
    radial-gradient(720px 460px at 92% 4%, rgba(110,91,255,.18), transparent 64%),
    linear-gradient(180deg, #060A13 0%, #0A0F1D 38%, #120F2A 100%);
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color 180ms var(--ease), text-shadow 180ms var(--ease)}
a:hover{color:var(--neon);text-shadow:0 0 8px rgba(45,226,198,.45)}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:15px}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--text);font-weight:700;line-height:1.35}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,19,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(56,189,248,.45),rgba(45,226,198,.45),rgba(110,91,255,.35),transparent);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px}
.logo{display:inline-flex;align-items:baseline;font-size:20px;font-weight:800;letter-spacing:.01em;color:var(--text)}
.logo:hover{text-shadow:none}
.logo-a{color:var(--text)}
.logo-b{color:var(--brand);text-shadow:0 0 14px rgba(56,189,248,.45)}
.nav-main{display:flex;align-items:center;gap:4px;flex:1}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;font-weight:500;transition:color 180ms var(--ease),background 180ms var(--ease),box-shadow 180ms var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05);box-shadow:0 1px 0 0 rgba(56,189,248,.35)}
.nav-link.active{color:var(--neon);background:rgba(45,226,198,.07);box-shadow:0 0 18px -8px rgba(45,226,198,.9)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--neon),var(--brand));
  box-shadow:0 0 10px rgba(45,226,198,.75);
}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:40px;height:40px;
  border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.nav-toggle:hover{border-color:var(--line-strong);box-shadow:var(--glow-brand)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;padding:12px 22px;line-height:1.2;
  transition:transform 180ms var(--ease),filter 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease);
  white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-cta{
  background:linear-gradient(180deg,#FFA05C,#FF7A26);
  color:#1B0F03;box-shadow:var(--glow-cta);border-radius:999px;font-weight:700;
}
.btn-cta:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 34px -4px rgba(255,138,61,.8);color:#1B0F03;text-shadow:none}
.btn-cta:active{transform:translateY(0);box-shadow:0 0 16px -6px rgba(255,138,61,.6)}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--text)}
.btn-ghost:hover{color:var(--brand);border-color:var(--brand);box-shadow:var(--glow-brand);text-shadow:none;transform:translateY(-1px)}
.btn:disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}

/* ---------- breadcrumb ---------- */
.crumb-bar{border-bottom:1px solid var(--line);background:rgba(11,18,32,.55)}
.crumb{display:flex;align-items:center;gap:8px;height:40px;font-size:13px;color:var(--text-3)}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--text-3);opacity:.6}
.crumb .now{color:var(--text-2)}

/* ---------- sections ---------- */
.section{padding:88px 0;position:relative}
.section-head{max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--neon);padding:5px 12px;border-radius:999px;
  border:1px solid rgba(45,226,198,.35);background:rgba(45,226,198,.06);
}
.h2{font-size:clamp(24px,3vw,34px);margin-top:18px}
.sub{color:var(--text-2);font-size:16px;margin-top:14px;max-width:640px}
.divider{height:1px;background:linear-gradient(90deg,rgba(56,189,248,.35),rgba(45,226,198,.18),transparent);border:0;margin:0}

/* ---------- hero ---------- */
.hero{position:relative;padding:72px 0 96px;overflow:hidden}
.hero::before{
  content:"";position:absolute;left:0;right:0;top:64px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,226,198,.55),rgba(56,189,248,.35),transparent);
  filter:blur(.3px);opacity:.85;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:center}
.hero h1{font-size:clamp(30px,4.4vw,52px);line-height:1.22;margin-top:20px}
.hero h1 .accent{color:var(--brand);text-shadow:0 0 26px rgba(56,189,248,.35)}
.hero-lead{color:var(--text-2);font-size:17px;margin-top:20px;line-height:1.85;max-width:560px}
.hero-note{
  margin-top:22px;font-size:14px;color:var(--text-2);
  border-left:3px solid var(--neon);padding:6px 0 6px 14px;background:linear-gradient(90deg,rgba(45,226,198,.08),transparent);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.badge{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text-2);font-size:13px;
  transition:border-color 180ms var(--ease),color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.badge:hover{border-color:var(--line-strong);color:var(--text);box-shadow:var(--glow-brand)}
.badge svg{color:var(--neon);flex:none}
.badge.hot{border-color:rgba(255,138,61,.55);color:#FFD5B4;background:rgba(255,138,61,.10)}
.badge.hot svg{color:var(--cta)}
.hero-visual{position:relative}
.hero-img{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid var(--line-strong);box-shadow:var(--shadow-card);
  aspect-ratio:16/10;background:var(--bg-2);
}
.hero-img img{width:100%;height:100%;object-fit:cover;opacity:.92}
.hero-img::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(45,226,198,.18),transparent 45%,rgba(110,91,255,.22));
  mix-blend-mode:screen;
}
.hero-float{
  position:absolute;left:-18px;bottom:24px;
  padding:14px 18px;border-radius:14px;
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.03));
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.14);box-shadow:var(--shadow-card);
}
.hero-float .num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--neon);line-height:1}
.hero-float .cap{font-size:12px;color:var(--text-2);margin-top:6px;letter-spacing:.04em}

/* ---------- glass ---------- */
.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.14);
  border-radius:var(--r-card);
}

/* ---------- numbered list ---------- */
.step-list{display:flex;flex-direction:column;gap:14px;margin-top:40px}
.step-row{
  position:relative;display:grid;grid-template-columns:78px 1fr auto;gap:20px;align-items:center;
  padding:22px 24px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.10);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),transform 180ms var(--ease);
}
.step-row::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--neon),rgba(45,226,198,0));
  opacity:.75;
}
.step-row:hover{border-color:var(--line-strong);box-shadow:var(--shadow-card),var(--glow-brand);transform:translateY(-2px)}
.step-no{font-family:var(--mono);font-size:32px;font-weight:700;color:var(--neon);line-height:1;letter-spacing:.02em}
.step-main h3{font-size:19px;font-weight:700}
.step-desc{color:var(--text-2);font-size:15px;line-height:1.7;margin-top:6px}
.step-tag{
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--brand);
  padding:6px 12px;border-radius:999px;border:1px solid rgba(56,189,248,.35);background:rgba(56,189,248,.08);
  white-space:nowrap;
}
.step-tag.warm{color:var(--cta);border-color:rgba(255,138,61,.45);background:rgba(255,138,61,.10)}

/* ---------- compare panel ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:44px}
.panel{padding:30px 28px;border-radius:var(--r-lg);position:relative;overflow:hidden}
.panel::before{content:"";position:absolute;top:0;left:24px;right:24px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,rgba(45,226,198,.9),rgba(56,189,248,.4),transparent)}
.panel.warm::before{background:linear-gradient(90deg,rgba(255,138,61,.9),rgba(255,138,61,.3),transparent)}
.panel h3{font-size:20px;display:flex;align-items:center;gap:10px}
.panel h3 svg{color:var(--neon);flex:none}
.panel.warm h3 svg{color:var(--cta)}
.panel .panel-sub{color:var(--text-3);font-size:14px;margin-top:10px}
.panel ul{margin-top:20px;display:flex;flex-direction:column;gap:14px}
.panel li{display:flex;gap:12px;font-size:15px;color:var(--text-2);line-height:1.7}
.panel li .dot{flex:none;width:6px;height:6px;border-radius:50%;margin-top:11px;background:var(--neon);box-shadow:0 0 10px rgba(45,226,198,.8)}
.panel.warm li .dot{background:var(--cta);box-shadow:0 0 10px rgba(255,138,61,.8)}
.panel li strong{color:var(--text);font-weight:600}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px;margin:44px auto 0}
.faq-item{border-bottom:1px solid var(--line);transition:background 180ms var(--ease),border-color 180ms var(--ease)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;
  background:transparent;border:0;color:var(--text);font-size:17px;font-weight:600;
  padding:22px 6px;transition:color 180ms var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-q .chev{flex:none;color:var(--text-3);transition:transform 260ms var(--ease),color 180ms var(--ease)}
.faq-item.open{border-radius:14px;border-bottom-color:transparent;border-left:3px solid var(--neon);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);box-shadow:var(--shadow-card);padding:0 20px}
.faq-item.open .faq-q{color:var(--text);padding-left:0}
.faq-item.open .chev{transform:rotate(180deg);color:var(--neon)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease)}
.faq-a p{color:var(--text-2);font-size:15px;line-height:1.8;padding:0 6px 24px 0;max-width:700px}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid rgba(255,138,61,.28);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px) saturate(140%);
  padding:52px;
}
.cta-band::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,138,61,.30),transparent 68%);pointer-events:none;
}
.cta-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start}
.cta-band h2{font-size:clamp(24px,3vw,32px);color:var(--text)}
.cta-band .cta-sub{color:var(--text-2);font-size:16px;margin-top:16px;max-width:440px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.cta-points span{
  font-size:13px;color:var(--text-2);padding:7px 13px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
}
.form-card{padding:26px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.025));
  border:1px solid rgba(255,255,255,.14);box-shadow:var(--shadow-card)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;letter-spacing:.02em}
.field input,.field select{
  width:100%;padding:12px 14px;border-radius:10px;color:var(--text);
  background:rgba(6,10,19,.72);border:1px solid var(--line);outline:none;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.field input::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(56,189,248,.18)}
.field .hint{font-size:12px;color:var(--text-3);margin-top:6px}
.form-actions{margin-top:6px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.form-note{font-size:12px;color:var(--text-3);margin-top:14px;line-height:1.7}

/* ---------- footer ---------- */
.site-footer{
  position:relative;margin-top:120px;padding:64px 0 28px;
  background:linear-gradient(180deg,#050810,#04070E 60%,#050810);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,226,198,.5),rgba(56,189,248,.4),rgba(110,91,255,.4),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1.1fr;gap:36px}
.footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.04em}
.footer-link{display:block;font-size:14px;color:var(--text-2);padding:6px 0;transition:color 180ms var(--ease),transform 180ms var(--ease)}
.footer-link:hover{color:var(--brand);transform:translateX(2px);text-shadow:none}
.footer-text{font-size:14px;color:var(--text-3);line-height:1.8}
.footer-contact{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.footer-contact svg{color:var(--brand);flex:none}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  text-align:center;font-size:13px;color:var(--text-3);
}

/* ---------- to top ---------- */
#toTop{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.14);color:var(--text-2);
  backdrop-filter:blur(14px);opacity:0;pointer-events:none;
  transition:opacity 240ms var(--ease),box-shadow 180ms var(--ease),color 180ms var(--ease);
  z-index:70;
}
#toTop.show{opacity:1;pointer-events:auto}
#toTop:hover{color:var(--neon);box-shadow:var(--glow-brand)}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:rgba(6,10,19,.97);
  backdrop-filter:blur(16px);transform:translateX(100%);transition:transform 300ms var(--ease);
  display:flex;flex-direction:column;padding:20px 22px 32px;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--text);display:flex;align-items:center;justify-content:center;
}
.drawer-nav{margin-top:18px;display:flex;flex-direction:column}
.drawer-nav a{
  display:flex;align-items:center;height:56px;font-size:17px;color:var(--text-2);
  border-bottom:1px solid var(--line);opacity:0;transform:translateY(8px);
}
.drawer.open .drawer-nav a{animation:drawerIn 320ms var(--ease) forwards}
.drawer-nav a:nth-child(1){animation-delay:40ms}
.drawer-nav a:nth-child(2){animation-delay:90ms}
.drawer-nav a:nth-child(3){animation-delay:140ms}
.drawer-nav a:nth-child(4){animation-delay:190ms}
.drawer-nav a:nth-child(5){animation-delay:240ms}
.drawer-nav a.active{color:var(--neon)}
.drawer-cta{margin-top:auto}
.drawer-cta .btn{width:100%}
@keyframes drawerIn{to{opacity:1;transform:translateY(0)}}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 400ms var(--ease),transform 400ms var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .container-x{padding:0 24px}
  .nav-main{display:none}
  .nav-toggle{display:inline-flex}
  .hero{padding:52px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:2}
  .hero-float{left:12px;bottom:14px}
  .compare{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .cta-band{padding:36px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:64px 0}
}
@media (max-width:639px){
  .container-x{padding:0 16px}
  .nav-inner{height:56px}
  .logo{font-size:18px}
  .nav-cta{display:none}
  .hero h1{font-size:clamp(26px,8vw,34px)}
  .hero-lead{font-size:15.5px}
  .step-row{grid-template-columns:1fr;gap:12px;padding:20px 18px}
  .step-no{font-size:26px}
  .step-tag{justify-self:start}
  .faq-q{font-size:16px;padding:18px 4px}
  .cta-band{padding:26px 18px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .section{padding:56px 0}
  .site-footer{margin-top:72px;padding:48px 0 24px}
  #toTop{right:16px;bottom:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}