/* roulang page: index */
:root{
  --bg:#060A18;
  --bg-soft:#0B1226;
  --primary:#19E0B4;
  --primary-deep:#0C8F79;
  --accent:#FF7A2F;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.10);
  --text:#E8EDF7;
  --text-dim:#9AA7C2;
  --radius:16px;
  --radius-lg:20px;
  --container:1200px;
  --shadow:0 10px 30px -12px rgba(0,0,0,.6);
  --ease:cubic-bezier(.2,.8,.2,1);
  --mono:ui-monospace,"SFMono-Regular","DIN Alternate","Menlo","Consolas",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:72px;display:flex;align-items:center;
  background:linear-gradient(180deg,rgba(6,10,24,.85),rgba(6,10,24,0));
  transition:background .25s var(--ease),border-color .25s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(6,10,24,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(25,224,180,.22),rgba(12,143,121,.10));
  border:1px solid rgba(25,224,180,.35);
  box-shadow:0 0 18px -6px rgba(25,224,180,.6);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:0}
.brand-text em{font-style:normal;color:var(--primary)}
.nav-desktop{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;padding:8px 14px;font-size:15px;color:var(--text-dim);
  border-radius:10px;transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.hamburger{
  display:none;width:42px;height:42px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);color:var(--text);
  align-items:center;justify-content:center;cursor:pointer;
}
.hamburger:active{transform:translateY(1px)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),filter .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-deep) 100%);
  color:#04150F;
  box-shadow:0 0 0 1px rgba(25,224,180,.35),0 12px 32px -10px rgba(25,224,180,.55);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(25,224,180,.25),0 6px 16px -10px rgba(25,224,180,.4)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);background:rgba(25,224,180,.07)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:11px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);
  font-size:14px;font-weight:600;background:none;border:none;padding:4px 0;cursor:pointer;
}
.btn-text svg{transition:transform .18s var(--ease)}
.btn-text:hover svg{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{opacity:.6;box-shadow:none;pointer-events:none}

/* ---------- hero ---------- */
.hero{position:relative;padding:156px 0 104px;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.30;filter:saturate(.75);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(900px 520px at 16% 8%,rgba(25,224,180,.20),transparent 62%),
    linear-gradient(180deg,rgba(6,10,24,.52) 0%,rgba(6,10,24,.90) 58%,var(--bg) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;opacity:.055;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.9) 0 1px,transparent 1px 96px),
                   repeating-linear-gradient(0deg,rgba(255,255,255,.9) 0 1px,transparent 1px 96px);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.28fr .84fr;gap:52px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  color:var(--primary);background:rgba(25,224,180,.10);border:1px solid rgba(25,224,180,.28);
}
.hero h1{
  margin-top:22px;font-size:52px;line-height:1.25;font-weight:700;letter-spacing:0;
}
.hero h1 span{color:var(--primary)}
.hero-sub{margin-top:20px;max-width:640px;font-size:17px;color:var(--text-dim);line-height:1.85}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.trust-bar{
  display:flex;flex-wrap:wrap;gap:14px 40px;margin-top:44px;
  padding-top:26px;border-top:1px solid var(--line);
}
.trust-bar li{display:flex;align-items:baseline;gap:10px}
.trust-bar .num{
  font-family:var(--mono);font-size:28px;font-weight:700;color:var(--primary);
  font-variant-numeric:tabular-nums;letter-spacing:0;
}
.trust-bar .lbl{font-size:13px;color:var(--text-dim)}

/* ---------- glass card ---------- */
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow);
  position:relative;
  overflow:hidden;
}
.glass::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);
}
.quick-card{padding:26px}
.quick-card h2{font-size:18px;font-weight:600;margin-bottom:6px}
.quick-card .hint{font-size:13px;color:var(--text-dim);margin-bottom:18px}
.quick-links{display:grid;gap:10px;margin-bottom:22px}
.quick-links a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:13px 16px;border-radius:12px;font-size:14px;
  background:rgba(255,255,255,.03);border:1px solid var(--line);
  transition:border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
.quick-links a:hover{border-color:rgba(25,224,180,.5);background:rgba(25,224,180,.07);transform:translateX(2px)}
.quick-links a span{color:var(--text-dim)}
.quick-links a:hover span{color:var(--primary)}
.login-mini{display:grid;gap:12px;padding-top:20px;border-top:1px solid var(--line)}
.field{display:grid;gap:7px}
.field label{font-size:13px;color:var(--text-dim)}
.field input{
  height:50px;padding:0 16px;border-radius:12px;font-size:14px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.field input::placeholder{color:var(--text-dim)}
.field input:focus{
  outline:none;border-color:var(--primary);background:rgba(25,224,180,.06);
  box-shadow:0 0 0 4px rgba(25,224,180,.12);
}
.form-note{font-size:12px;color:var(--text-dim);text-align:center}

/* ---------- section heading ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.sec-head h2{font-size:32px;font-weight:600;line-height:1.35}
.sec-head p{margin-top:10px;font-size:15px;color:var(--text-dim);max-width:620px}
.sec-tag{
  display:inline-block;margin-bottom:14px;padding:5px 12px;border-radius:999px;
  font-size:12px;color:var(--accent);background:rgba(255,122,47,.12);border:1px solid rgba(255,122,47,.25);
}

/* ---------- advantage asymmetric grid ---------- */
.adv-grid{display:grid;grid-template-columns:6fr 3fr 3fr;gap:22px;align-items:stretch}
.adv-main{padding:0;display:flex;flex-direction:column}
.adv-main .adv-media{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line)}
.adv-main .adv-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.adv-main:hover .adv-media img{transform:scale(1.03)}
.adv-main .adv-body{padding:26px 28px 30px}
.adv-small{padding:26px 24px;display:flex;flex-direction:column;gap:12px}
.adv-card{transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease)}
.adv-card:hover{border-color:rgba(25,224,180,.32);transform:translateY(-3px);box-shadow:0 16px 40px -18px rgba(25,224,180,.5)}
.idx{
  font-family:var(--mono);font-size:13px;color:var(--primary);
  padding:3px 9px;border-radius:8px;background:rgba(25,224,180,.10);
  border:1px solid rgba(25,224,180,.25);display:inline-block;width:fit-content;
}
.adv-card h3{font-size:19px;font-weight:600;margin-top:6px}
.adv-card p{font-size:14.5px;color:var(--text-dim);line-height:1.85}
.icon-line{width:38px;height:38px;color:var(--primary)}

/* ---------- scenario split ---------- */
.scene{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.scene-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:center}
.step-tabs{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 22px}
.step-tab{
  padding:9px 16px;border-radius:999px;font-size:14px;
  border:1px solid var(--line);color:var(--text-dim);background:rgba(255,255,255,.03);
}
.step-tab.is-on{
  color:#04150F;background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  border-color:transparent;box-shadow:0 0 0 1px rgba(25,224,180,.3),0 10px 24px -12px rgba(25,224,180,.6);
}
.scene-list{display:grid;gap:14px;margin-top:8px}
.scene-list li{display:flex;gap:12px;font-size:14.5px;color:var(--text-dim)}
.scene-list li::before{
  content:"";flex:0 0 auto;width:16px;height:2px;margin-top:14px;
  background:var(--primary);border-radius:2px;
}
.device{
  border-radius:22px;padding:14px;background:rgba(255,255,255,.045);
  border:1px solid var(--line);box-shadow:0 24px 60px -28px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.08);
}
.device-bar{display:flex;gap:6px;padding:0 4px 12px}
.device-bar i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.18);display:block}
.device-screen{position:relative;border-radius:14px;overflow:hidden;box-shadow:inset 0 0 0 1px rgba(255,255,255,.08)}
.device-screen img{width:100%;aspect-ratio:16/10;object-fit:cover}
.device-screen .overlay{
  position:absolute;inset:auto 0 0 0;padding:18px 20px;
  background:linear-gradient(180deg,rgba(6,10,24,0),rgba(6,10,24,.92));
}
.device-screen .overlay strong{display:block;font-size:15px}
.device-screen .overlay span{font-size:12.5px;color:var(--text-dim)}

/* ---------- CMS posts ---------- */
.posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.post-card{
  display:flex;flex-direction:column;border-radius:var(--radius-lg);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.post-card:hover{border-color:rgba(25,224,180,.30);transform:translateY(-3px);box-shadow:0 18px 44px -20px rgba(25,224,180,.45)}
.post-cover{aspect-ratio:16/9;overflow:hidden;background:rgba(255,255,255,.04)}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.post-card:hover .post-cover img{transform:scale(1.03)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-title{font-size:17px;font-weight:600;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-excerpt{font-size:13.5px;color:var(--text-dim);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;padding-top:10px;font-size:12.5px;color:var(--text-dim);display:flex;align-items:center;gap:10px;border-top:1px solid var(--line)}
.badge{
  display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;line-height:1.7;
}
.badge-accent{color:var(--accent);background:rgba(255,122,47,.12);border:1px solid rgba(255,122,47,.25)}
.badge-primary{color:var(--primary);background:rgba(25,224,180,.12);border:1px solid rgba(25,224,180,.25)}
.empty-state{
  padding:60px 24px;text-align:center;border-radius:var(--radius-lg);
  border:1px dashed var(--line);background:rgba(255,255,255,.02);
}
.empty-state svg{width:44px;height:44px;color:var(--text-dim);opacity:.6;margin:0 auto 14px}
.empty-state p{font-size:14px;color:var(--text-dim);margin-bottom:18px}

/* ---------- social proof ---------- */
.stats-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
}
.stats-row div{background:var(--bg-soft);padding:26px 22px}
.stats-row .n{font-family:var(--mono);font-size:30px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums}
.stats-row .t{font-size:13.5px;color:var(--text-dim);margin-top:4px}
.review-cols{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:28px}
.review-col{display:grid;gap:22px}
.review-col:last-child{margin-top:38px}
.review{padding:24px}
.review p{font-size:14.5px;color:var(--text);line-height:1.85}
.review .who{display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.avatar{
  width:38px;height:38px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,rgba(25,224,180,.30),rgba(255,122,47,.22));
  border:1px solid var(--line);
}
.who strong{display:block;font-size:14px;font-weight:600}
.who em{font-style:normal;font-size:12.5px;color:var(--text-dim)}
.stars{margin-left:auto;color:var(--primary);font-size:13px;letter-spacing:2px}

/* ---------- faq ---------- */
.faq-wrap{max-width:800px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:22px 44px 22px 22px;font-size:16px;font-weight:600;
  transition:color .18s var(--ease);
  border-left:2px solid transparent;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:20px;top:50%;width:12px;height:12px;
  border-right:2px solid var(--text-dim);border-bottom:2px solid var(--text-dim);
  transform:translateY(-70%) rotate(45deg);transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.faq-item[open] summary{color:var(--primary);border-left-color:var(--primary)}
.faq-item[open] summary::after{border-color:var(--primary);transform:translateY(-30%) rotate(225deg)}
.faq-item summary:hover{color:var(--primary)}
.faq-body{padding:0 46px 24px 22px;font-size:14.5px;color:var(--text-dim);animation:fadeIn .28s var(--ease)}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- cta panel ---------- */
.cta-panel{
  position:relative;padding:60px 56px;border-radius:24px;overflow:hidden;
  background:linear-gradient(135deg,rgba(25,224,180,.10),rgba(11,18,38,.9));
  border:1px solid rgba(25,224,180,.22);
  box-shadow:0 30px 70px -34px rgba(25,224,180,.5);
}
.cta-panel::after{
  content:"";position:absolute;right:-120px;top:-120px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(25,224,180,.28),transparent 65%);
}
.cta-panel h2{position:relative;font-size:30px;font-weight:600}
.cta-panel p{position:relative;margin-top:14px;font-size:15px;color:var(--text-dim);max-width:640px}
.cta-panel .acts{position:relative;display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-soft);padding:64px 0 28px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand p{margin-top:16px;font-size:14px;color:var(--text-dim);max-width:320px}
.foot-col h3{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text)}
.foot-col ul{display:grid;gap:10px}
.foot-col a{font-size:14px;color:var(--text-dim);transition:color .18s var(--ease)}
.foot-col a:hover{color:var(--primary)}
.foot-col p{font-size:14px;color:var(--text-dim)}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-dim);
}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:26px;bottom:30px;z-index:70;
  display:flex;align-items:center;gap:14px;
  padding:12px 14px 12px 20px;border-radius:999px;
  background:rgba(11,18,38,.86);backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);box-shadow:var(--shadow);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease);
}
.float-cta.is-visible{opacity:1;transform:none;pointer-events:auto}
.float-cta span{font-size:13.5px;color:var(--text-dim)}

/* ---------- mobile drawer + tabbar ---------- */
.drawer{
  position:fixed;inset:0;z-index:95;display:none;flex-direction:column;
  background:rgba(6,10,24,.97);backdrop-filter:blur(18px);padding:24px;
}
.drawer.is-open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{
  width:42px;height:42px;border-radius:12px;background:var(--glass);
  border:1px solid var(--line);color:var(--text);display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.drawer-search{
  height:50px;border-radius:12px;background:rgba(255,255,255,.04);
  border:1px solid var(--line);color:var(--text-dim);font-size:14px;
  padding:0 16px;margin-bottom:20px;
}
.drawer-nav{display:grid;gap:8px}
.drawer-nav a{
  padding:16px 18px;border-radius:14px;font-size:16px;
  background:rgba(255,255,255,.03);border:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--primary);border-color:rgba(25,224,180,.4);background:rgba(25,224,180,.07)}
.drawer-foot{margin-top:auto;display:grid;gap:12px}

.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;display:none;
  grid-template-columns:repeat(4,1fr);
  background:rgba(6,10,24,.94);backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-item{
  position:relative;height:62px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:3px;
  font-size:10.5px;color:var(--text-dim);
}
.tab-item svg{width:22px;height:22px}
.tab-item.is-active{color:var(--primary)}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--primary);
  box-shadow:0 0 10px rgba(25,224,180,.9);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-desktop{display:none}
  .hamburger{display:flex}
  .hero{padding:124px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .hero h1{font-size:36px}
  .adv-grid{grid-template-columns:1fr 1fr}
  .adv-main{grid-column:1 / -1}
  .scene-grid{grid-template-columns:1fr;gap:38px}
  .posts-grid{grid-template-columns:repeat(2,1fr)}
  .stats-row{grid-template-columns:repeat(2,1fr)}
  .review-cols{grid-template-columns:1fr}
  .review-col:last-child{margin-top:0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
  .tabbar{display:grid}
  body{padding-bottom:calc(62px + env(safe-area-inset-bottom))}
  .site-footer{margin-bottom:62px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .hero{padding:112px 0 60px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:15.5px}
  .btn{height:50px;width:100%}
  .hero-cta .btn{width:100%}
  .adv-grid{grid-template-columns:1fr}
  .posts-grid{grid-template-columns:1fr}
  .stats-row{grid-template-columns:1fr 1fr}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px}
  .sec-head h2{font-size:26px}
  .cta-panel{padding:36px 24px}
  .cta-panel h2{font-size:24px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .foot-bottom{flex-direction:column;gap:8px}
  .faq-item summary{padding:18px 40px 18px 16px;font-size:15px}
  .faq-body{padding:0 40px 20px 16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg:#060A18;
  --bg-soft:#0B1226;
  --primary:#19E0B4;
  --primary-deep:#0C8F79;
  --accent:#FF7A2F;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.10);
  --text:#E8EDF7;
  --text-dim:#9AA7C2;
  --radius:16px;
  --radius-lg:20px;
  --shadow:0 10px 30px -12px rgba(0,0,0,.6);
  --shadow-hover:0 10px 30px -12px rgba(0,0,0,.6), 0 0 0 1px rgba(25,224,180,.30), 0 18px 44px -18px rgba(25,224,180,.45);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1240px){.container{max-width:1240px}}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:68px;
  display:flex;align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .25s var(--ease),border-color .25s var(--ease),backdrop-filter .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,10,24,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:600;letter-spacing:0}
.brand-mark{
  width:36px;height:36px;border-radius:12px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.brand-text{font-size:17px;color:var(--text)}
.brand-text em{font-style:normal;color:var(--primary);margin-left:1px}
.nav-desktop{display:none;align-items:center;gap:6px}
.nav-link{
  position:relative;padding:8px 14px;border-radius:10px;
  font-size:15px;color:var(--text-dim);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px}
.hamburger{
  width:40px;height:40px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text);
}
.hamburger:hover{border-color:rgba(25,224,180,.45);color:var(--primary)}
@media (min-width:1024px){
  .nav-desktop{display:flex}
  .hamburger{display:none}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:12px;
  font-size:15px;font-weight:600;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
  white-space:nowrap;
}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:11px}
.btn-primary{
  background:linear-gradient(135deg,#19E0B4 0%,#0C8F79 100%);
  color:#04130F;
  box-shadow:0 0 0 1px rgba(25,224,180,.35), 0 12px 32px -10px rgba(25,224,180,.55);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(25,224,180,.28), 0 6px 16px -8px rgba(25,224,180,.5)}
.btn-ghost{
  background:transparent;color:var(--text);border:1px solid var(--line);
}
.btn-ghost:hover{border-color:rgba(25,224,180,.55);background:rgba(25,224,180,.06);color:var(--primary)}
.btn-ghost:active{transform:translateY(1px)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px;padding:6px 0;
}
.btn-text svg{transition:transform .18s var(--ease)}
.btn-text:hover svg{transform:translateX(3px)}

/* ---------- Badges / chips ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;line-height:1.6;
  border:1px solid transparent;
}
.badge-cat{background:rgba(255,122,47,.12);color:var(--accent);border-color:rgba(255,122,47,.28)}
.badge-state{background:rgba(25,224,180,.12);color:var(--primary);border-color:rgba(25,224,180,.28)}
.badge-plain{background:var(--glass);color:var(--text-dim);border-color:var(--line)}

/* ---------- Mobile drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:70;
  background:rgba(6,10,24,.94);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  display:none;flex-direction:column;
  padding:22px 20px calc(96px + env(safe-area-inset-bottom));
}
.drawer.is-open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{
  width:40px;height:40px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--line);
}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  padding:14px 16px;border-radius:14px;font-size:17px;color:var(--text);
  background:var(--glass);border:1px solid var(--line);
}
.drawer-nav a:hover{border-color:rgba(25,224,180,.45);color:var(--primary)}
.drawer-search{
  margin-top:22px;display:flex;align-items:center;gap:10px;
  padding:0 16px;height:50px;border-radius:14px;
  background:var(--glass);border:1px solid var(--line);color:var(--text-dim);font-size:14px;
}

/* ---------- Bottom tab ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:65;
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  display:grid;grid-template-columns:repeat(4,1fr);
  background:rgba(6,10,24,.88);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-top:1px solid var(--line);
}
.tabbar a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:10.5px;color:var(--text-dim);position:relative;
}
.tabbar a svg{width:22px;height:22px}
.tabbar a.is-active{color:var(--primary)}
.tabbar a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(25,224,180,.8);
}
@media (min-width:1024px){.tabbar{display:none}}

/* ---------- Page frame ---------- */
.page-main{padding-top:68px;padding-bottom:calc(60px + env(safe-area-inset-bottom) + 32px)}
@media (min-width:1024px){.page-main{padding-bottom:72px}}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-dim);padding:22px 0 0;
}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(154,167,194,.5)}
.breadcrumb .current{color:#7C8AA8;max-width:min(560px,60vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- Article head ---------- */
.article-hero{
  position:relative;margin-top:8px;padding:34px 0 30px;
  border-bottom:1px solid var(--line);
}
.article-hero::before{
  content:"";position:absolute;left:-10%;top:-160px;width:min(760px,90vw);height:420px;z-index:-1;
  background:radial-gradient(closest-side,rgba(25,224,180,.16),transparent 72%);
  pointer-events:none;
}
.article-title{
  font-size:28px;font-weight:700;line-height:1.3;color:#fff;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  max-width:22em;
}
@media (min-width:640px){.article-title{font-size:36px}}
@media (min-width:1024px){.article-title{font-size:46px}}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin-top:20px;font-size:13.5px;color:var(--text-dim);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(154,167,194,.5)}
.meta-num{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:#C6D2E8}

/* ---------- Layout ---------- */
.article-layout{display:grid;grid-template-columns:1fr;gap:40px;padding:38px 0 0}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:44px;padding-top:48px}
}

.reading{max-width:76ch}

/* ---------- Article body typography ---------- */
.article-body{font-size:16.5px;color:#DCE4F2}
.article-body > p{margin:0 0 1.2em;line-height:1.9}
.article-body h2{
  position:relative;margin:2.4em 0 .8em;padding-left:14px;
  font-size:26px;font-weight:600;color:#fff;line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),rgba(25,224,180,.15));
}
.article-body h3{margin:1.9em 0 .6em;font-size:19px;font-weight:600;color:#fff}
.article-body h4{margin:1.5em 0 .5em;font-size:17px;color:#EAF0FA}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.article-body a:hover{text-decoration-thickness:2px}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:2px}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:.6em;line-height:1.85}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--primary);
}
.article-body ol{counter-reset:li}
.article-body ol li::before{
  counter-increment:li;content:counter(li);
  position:absolute;left:0;top:.05em;font-family:ui-monospace,Menlo,Consolas,monospace;
  font-size:14px;color:var(--primary);
}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;border-left:3px solid var(--primary);
  background:var(--glass);border-radius:0 14px 14px 0;color:#CBD6EA;font-style:italic;
}
.article-body img{border-radius:14px;margin:1.4em auto;box-shadow:var(--shadow)}
.article-body figure{margin:1.6em 0}
.article-body figcaption,.article-body .caption{
  margin-top:10px;text-align:center;font-size:12.5px;color:var(--text-dim);
}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body thead th{background:rgba(25,224,180,.08);color:#fff;font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.025)}
.article-body code{
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13.5px;
  background:rgba(255,255,255,.06);border:1px solid var(--line);border-radius:6px;padding:1px 6px;color:#9FEEDD;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

/* ---------- Sidebar ---------- */
.side-col{display:flex;flex-direction:column;gap:20px}
@media (min-width:1024px){
  .side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
}
.panel{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px;box-shadow:var(--shadow);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  position:relative;
}
.panel::before{
  content:"";position:absolute;left:18px;right:18px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);
}
.panel-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.panel-title span{width:6px;height:6px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(25,224,180,.8)}
.panel-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 12px;border-radius:12px;font-size:14.5px;color:var(--text-dim);
  border:1px solid transparent;
}
.panel-list a:hover{color:var(--primary);background:rgba(25,224,180,.06);border-color:rgba(25,224,180,.24)}
.panel-list a .arrow{color:rgba(25,224,180,.75);transition:transform .18s var(--ease)}
.panel-list a:hover .arrow{transform:translateX(3px)}
.panel-note{font-size:13.5px;color:var(--text-dim);line-height:1.8}

/* ---------- Tags & share ---------- */
.article-foot{margin-top:48px;padding-top:26px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  padding:6px 14px;border-radius:999px;font-size:13px;color:var(--text-dim);
  background:var(--glass);border:1px solid var(--line);
}
.tag:hover{color:var(--primary);border-color:rgba(25,224,180,.35)}
.share-row{display:flex;align-items:center;gap:10px;margin-top:20px;flex-wrap:wrap}
.share-row .label{font-size:13.5px;color:var(--text-dim);margin-right:2px}
.share-btn{
  width:40px;height:40px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text-dim);
}
.share-btn:hover{color:var(--primary);border-color:rgba(25,224,180,.4);transform:translateY(-2px)}
.share-btn:active{transform:translateY(0)}

/* ---------- Related ---------- */
.related{margin-top:60px}
.related-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:20px}
.related-head h2{font-size:24px;color:#fff}
.related-grid{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:768px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.rel-card{
  display:flex;gap:14px;align-items:center;padding:14px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.rel-card:hover{transform:translateY(-3px);border-color:rgba(25,224,180,.35);box-shadow:var(--shadow-hover)}
.rel-thumb{
  width:84px;height:64px;flex:0 0 auto;border-radius:12px;overflow:hidden;background:var(--bg-soft);
}
.rel-thumb img{width:100%;height:100%;object-fit:cover}
.rel-body h3{font-size:15px;color:#EAF0FA;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-body time{display:block;margin-top:6px;font-size:12.5px;color:var(--text-dim);font-family:ui-monospace,Menlo,Consolas,monospace}

.empty-state{
  padding:46px 24px;text-align:center;border-radius:var(--radius-lg);
  background:var(--glass);border:1px dashed var(--line);
}
.empty-state h2{font-size:20px;color:#fff;margin-bottom:10px}
.empty-state p{color:var(--text-dim);font-size:14.5px;margin-bottom:20px}

/* ---------- CTA strip ---------- */
.cta-panel{
  margin-top:64px;padding:34px;border-radius:var(--radius-lg);
  background:linear-gradient(135deg,rgba(25,224,180,.10),rgba(255,255,255,.03));
  border:1px solid rgba(25,224,180,.24);
  display:flex;flex-direction:column;gap:20px;
}
@media (min-width:768px){
  .cta-panel{flex-direction:row;align-items:center;justify-content:space-between;padding:40px}
}
.cta-panel h2{font-size:24px;color:#fff;margin-bottom:8px}
.cta-panel p{font-size:14.5px;color:var(--text-dim);max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- Footer ---------- */
.site-footer{margin-top:88px;border-top:1px solid var(--line);background:var(--bg-soft)}
.foot-grid{display:grid;grid-template-columns:1fr;gap:30px;padding:52px 0 34px}
@media (min-width:640px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.foot-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}}
.foot-brand p{margin-top:14px;font-size:13.8px;color:var(--text-dim);line-height:1.9;max-width:34ch}
.foot-col h3{font-size:14px;color:#fff;margin-bottom:14px;font-weight:600}
.foot-col ul{display:flex;flex-direction:column;gap:9px}
.foot-col a{font-size:13.8px;color:var(--text-dim)}
.foot-col a:hover{color:var(--primary)}
.foot-col p{font-size:13.5px;color:var(--text-dim);line-height:1.9}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;
  padding:18px 0 30px;border-top:1px solid var(--line);
  font-size:12.5px;color:#7C8AA8;
}
@media (max-width:1023px){
  .foot-bottom{padding-bottom:calc(84px + env(safe-area-inset-bottom))}
}

.rise{animation:rise .4s var(--ease) both}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
    --bg:#060A18;
    --bg-soft:#0B1226;
    --primary:#19E0B4;
    --primary-deep:#0C8F79;
    --accent:#FF7A2F;
    --glass:rgba(255,255,255,.045);
    --line:rgba(255,255,255,.10);
    --text:#E8EDF7;
    --text-dim:#9AA7C2;
    --radius-sm:12px;
    --radius:16px;
    --radius-lg:20px;
    --shadow-1:0 10px 30px -12px rgba(0,0,0,.6);
    --shadow-glow:0 0 0 1px rgba(25,224,180,.35), 0 12px 32px -10px rgba(25,224,180,.55);
    --container:1200px;
    --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    --font-num:"DIN Alternate","SF Mono",ui-monospace,Menlo,Consolas,monospace;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  html body{
    margin:0;
    padding:0;
    background:var(--bg);
    color:var(--text);
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{display:block;max-width:100%;height:auto}
  a{color:inherit;text-decoration:none}
  button,input{font-family:inherit;font-size:inherit}
  h1,h2,h3,h4,p,ul,ol{margin:0}
  ul,ol{padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
  .section{padding:96px 0}
  .section-tight{padding:72px 0}
  @media (max-width:1023px){ .section{padding:72px 0} .section-tight{padding:56px 0} }
  @media (max-width:639px){ .container{padding:0 18px} .section{padding:56px 0} }

  /* ---------- 通用组件 ---------- */
  .glass-card{
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.06), var(--shadow-1);
  }
  .tag{
    display:inline-flex;align-items:center;gap:8px;
    padding:5px 13px;border-radius:999px;
    font-size:12px;letter-spacing:.02em;
    background:rgba(25,224,180,.12);color:var(--primary);
    border:1px solid rgba(25,224,180,.28);
  }
  .tag-accent{
    background:rgba(255,122,47,.12);color:var(--accent);
    border-color:rgba(255,122,47,.30);
  }
  .section-head{max-width:760px;margin-bottom:44px}
  .section-head h2{font-size:32px;font-weight:600;line-height:1.35;margin:14px 0 12px}
  .section-head p{color:var(--text-dim);font-size:16px;line-height:1.85}
  @media (max-width:767px){ .section-head h2{font-size:26px} }
  .num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:50px;padding:0 24px;border-radius:var(--radius-sm);
    font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:transform .18s cubic-bezier(.2,.8,.2,1),box-shadow .18s cubic-bezier(.2,.8,.2,1),background .18s,border-color .18s,color .18s;
  }
  .btn-primary{
    background:linear-gradient(135deg,#19E0B4 0%,#0C8F79 100%);
    color:#042019;
    box-shadow:var(--shadow-glow);
  }
  .btn-primary:hover{transform:translateY(-2px);filter:brightness(1.07)}
  .btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(25,224,180,.25),0 6px 16px -10px rgba(25,224,180,.45)}
  .btn-ghost{
    background:transparent;border-color:var(--line);color:var(--text);
  }
  .btn-ghost:hover{border-color:rgba(25,224,180,.55);background:rgba(25,224,180,.06);transform:translateY(-2px)}
  .btn-ghost:active{transform:translateY(1px);background:rgba(25,224,180,.10)}
  .btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px}
  .btn[disabled]{opacity:.6;box-shadow:none;cursor:not-allowed}
  .link-more{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--primary);font-size:14px;font-weight:600;
    transition:gap .18s cubic-bezier(.2,.8,.2,1),color .18s;
  }
  .link-more:hover{gap:10px;color:#4DF0CB}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:60;
    height:68px;display:flex;align-items:center;
    background:transparent;border-bottom:1px solid transparent;
    transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
  }
  .site-header.is-scrolled{
    background:rgba(6,10,24,.82);
    border-bottom-color:var(--line);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
  }
  .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}
  .brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--text);white-space:nowrap}
  .brand-mark{
    width:34px;height:34px;border-radius:11px;display:grid;place-items:center;flex:0 0 auto;
    background:linear-gradient(135deg,rgba(25,224,180,.22),rgba(12,143,121,.12));
    border:1px solid rgba(25,224,180,.35);
  }
  .brand-text em{font-style:normal;color:var(--primary)}
  .nav-desktop{display:flex;align-items:center;gap:4px}
  .nav-link{
    position:relative;padding:10px 14px;border-radius:10px;
    font-size:15px;color:var(--text-dim);
    transition:color .18s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
    background:var(--primary);transform:scaleX(0);transform-origin:left center;
    transition:transform .2s cubic-bezier(.2,.8,.2,1);
  }
  .nav-link:hover{color:var(--text)}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.is-active{color:var(--primary)}
  .nav-link.is-active::after{transform:scaleX(1);box-shadow:0 0 10px rgba(25,224,180,.7)}
  .nav-actions{display:flex;align-items:center;gap:12px}
  .hamburger{
    display:none;width:42px;height:42px;align-items:center;justify-content:center;
    background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:11px;
    color:var(--text);cursor:pointer;transition:border-color .18s,background .18s;
  }
  .hamburger:hover{border-color:rgba(25,224,180,.5);background:rgba(25,224,180,.08)}
  @media (max-width:1023px){
    .nav-desktop{display:none}
    .hamburger{display:inline-flex}
    .nav-actions .btn-sm{display:none}
  }

  /* ---------- 抽屉导航 ---------- */
  .drawer{
    position:fixed;inset:0;z-index:90;
    background:rgba(6,10,24,.94);
    backdrop-filter:blur(16px) saturate(140%);
    -webkit-backdrop-filter:blur(16px) saturate(140%);
    padding:22px 20px calc(32px + env(safe-area-inset-bottom));
    display:flex;flex-direction:column;gap:20px;
    opacity:0;visibility:hidden;transform:translateY(-12px);
    transition:opacity .22s ease,transform .22s cubic-bezier(.2,.8,.2,1),visibility .22s;
  }
  .drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between}
  .drawer-close{
    width:42px;height:42px;border-radius:11px;cursor:pointer;
    background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text);
    font-size:22px;line-height:1;display:grid;place-items:center;
  }
  .drawer-close:hover{border-color:rgba(25,224,180,.5)}
  .drawer-search input{
    width:100%;height:50px;padding:0 16px;border-radius:var(--radius-sm);
    background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text);
    transition:border-color .18s,box-shadow .18s;
  }
  .drawer-search input::placeholder{color:var(--text-dim)}
  .drawer-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(25,224,180,.12)}
  .drawer-nav{display:grid;gap:6px;margin-top:4px}
  .drawer-link{
    padding:14px 16px;border-radius:var(--radius-sm);font-size:16px;color:var(--text-dim);
    border:1px solid transparent;transition:background .18s,color .18s,border-color .18s;
  }
  .drawer-link:hover{background:rgba(255,255,255,.05);color:var(--text)}
  .drawer-link.is-active{color:var(--primary);background:rgba(25,224,180,.10);border-color:rgba(25,224,180,.28)}
  .drawer-cta{margin-top:auto;width:100%}

  /* ---------- 页面头部 ---------- */
  .page-hero{
    position:relative;overflow:hidden;
    padding:130px 0 52px;min-height:300px;
    border-bottom:1px solid var(--line);
    background-image:linear-gradient(180deg,rgba(6,10,24,.74) 0%,rgba(6,10,24,.93) 100%),url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center;
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:
      radial-gradient(640px 320px at 16% 8%,rgba(25,224,180,.20),transparent 70%),
      radial-gradient(420px 260px at 92% 92%,rgba(255,122,47,.10),transparent 72%);
  }
  .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) 292px;gap:48px;align-items:start}
  .eyebrow{margin-bottom:16px}
  .hero-copy h1{
    font-size:44px;font-weight:700;line-height:1.28;letter-spacing:0;
    max-width:20ch;
  }
  .hero-lead{margin-top:18px;color:var(--text-dim);font-size:17px;line-height:1.85;max-width:44ch}
  @media (max-width:1023px){
    .hero-grid{grid-template-columns:1fr;gap:28px}
    .hero-copy h1{font-size:34px;max-width:24ch}
  }
  @media (max-width:639px){
    .page-hero{padding:110px 0 40px}
    .hero-copy h1{font-size:29px}
    .hero-lead{font-size:16px}
  }
  .anchor-nav{padding:20px 20px 18px}
  .anchor-title{font-size:13px;color:var(--text-dim);margin-bottom:12px}
  .anchor-list{display:grid;gap:2px}
  .anchor-list a{
    display:flex;align-items:center;gap:10px;
    padding:9px 10px;border-radius:10px;font-size:14px;color:var(--text-dim);
    transition:background .18s,color .18s;
  }
  .anchor-list a:hover{background:rgba(25,224,180,.08);color:var(--primary)}
  .anchor-list a .dot{
    width:6px;height:6px;border-radius:50%;background:rgba(25,224,180,.5);flex:0 0 auto;
  }
  @media (min-width:1024px){
    .anchor-nav{position:sticky;top:96px}
  }

  /* ---------- 准备清单 ---------- */
  .prep-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:start}
  .prep-intro h2{font-size:30px;font-weight:600;line-height:1.35;margin:16px 0 14px}
  .prep-intro p{color:var(--text-dim)}
  @media (max-width:1023px){
    .prep-grid{grid-template-columns:1fr;gap:32px}
    .prep-intro h2{font-size:26px}
  }
  .check-list{display:grid;gap:16px}
  .check-item{
    display:grid;grid-template-columns:44px 1fr;gap:16px;align-items:start;
    padding:22px 24px;border-radius:var(--radius-lg);
    background:var(--glass);border:1px solid var(--line);
    transition:border-color .2s cubic-bezier(.2,.8,.2,1),transform .2s cubic-bezier(.2,.8,.2,1),box-shadow .2s;
  }
  .check-item:hover{transform:translateY(-3px);border-color:rgba(25,224,180,.35);box-shadow:0 18px 40px -22px rgba(25,224,180,.5)}
  .check-icon{
    width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
    background:rgba(25,224,180,.10);border:1px solid rgba(25,224,180,.28);color:var(--primary);
  }
  .check-item h3{font-size:18px;font-weight:600;margin-bottom:6px}
  .check-item p{color:var(--text-dim);font-size:15px;line-height:1.8}
  @media (max-width:639px){ .check-item{grid-template-columns:36px 1fr;padding:18px} .check-icon{width:36px;height:36px;border-radius:11px} }

  /* ---------- 步骤时间轴 ---------- */
  .timeline-wrap{position:relative}
  .timeline{position:relative;max-width:940px;margin:0 auto;padding-left:64px}
  .timeline::before{
    content:"";position:absolute;left:23px;top:10px;bottom:24px;width:1px;
    background:linear-gradient(180deg,rgba(25,224,180,.78) 0%,rgba(25,224,180,.35) 55%,rgba(25,224,180,0) 100%);
  }
  .step{position:relative;margin-bottom:28px}
  .step-dot{
    position:absolute;left:-64px;top:20px;
    width:48px;height:48px;border-radius:50%;
    display:grid;place-items:center;
    font-family:var(--font-num);font-size:15px;font-weight:700;color:var(--primary);
    background:#0A1224;border:1px solid rgba(25,224,180,.45);
    box-shadow:0 0 0 6px rgba(25,224,180,.06),0 0 22px -4px rgba(25,224,180,.55);
  }
  .step-card{
    padding:26px 28px;border-radius:var(--radius-lg);
    background:var(--glass);border:1px solid var(--line);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.05),var(--shadow-1);
    transition:border-color .2s cubic-bezier(.2,.8,.2,1),transform .2s cubic-bezier(.2,.8,.2,1);
  }
  .step-card:hover{transform:translateY(-3px);border-color:rgba(25,224,180,.32)}
  .step-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
  .step-card p{color:var(--text-dim);font-size:15px;line-height:1.85}
  .step-note{
    margin-top:14px;padding:12px 16px;border-radius:var(--radius-sm);
    background:rgba(255,122,47,.07);border-left:3px solid rgba(255,122,47,.65);
    color:#E9C7AF;font-size:14px;line-height:1.8;
  }
  .step-media{
    margin-top:16px;border-radius:var(--radius);overflow:hidden;
    border:1px solid var(--line);aspect-ratio:16/7;background:#0B1226;
  }
  .step-media img{width:100%;height:100%;object-fit:cover}
  @media (max-width:639px){
    .timeline{padding-left:48px}
    .step-dot{left:-48px;width:38px;height:38px;font-size:13px;top:16px}
    .step-card{padding:20px}
  }

  /* ---------- 提示排查 ---------- */
  .split{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:56px;align-items:center}
  .split-media{
    position:relative;border-radius:var(--radius-lg);overflow:hidden;
    border:1px solid var(--line);aspect-ratio:4/3;background:#0B1226;
    box-shadow:0 0 60px -30px rgba(25,224,180,.55);
  }
  .split-media img{width:100%;height:100%;object-fit:cover}
  .split-body h2{font-size:30px;font-weight:600;line-height:1.35;margin:16px 0 14px}
  .split-body > p{color:var(--text-dim);margin-bottom:24px}
  @media (max-width:1023px){
    .split{grid-template-columns:1fr;gap:32px}
    .split-body h2{font-size:25px}
  }
  .bullet-list{display:grid;gap:14px}
  .bullet-item{
    display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;
    padding:16px 18px;border-radius:var(--radius);
    background:rgba(255,255,255,.03);border:1px solid var(--line);
    transition:border-color .2s,background .2s;
  }
  .bullet-item:hover{border-color:rgba(25,224,180,.3);background:rgba(25,224,180,.05)}
  .bullet-item .bar{width:22px;height:2px;border-radius:2px;background:var(--primary);margin-top:15px}
  .bullet-item h3{font-size:16px;font-weight:600;margin-bottom:3px}
  .bullet-item p{color:var(--text-dim);font-size:14.5px;line-height:1.8}

  /* ---------- 安全设置 ---------- */
  .security-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:center}
  @media (max-width:1023px){ .security-grid{grid-template-columns:1fr;gap:32px} }
  .security-list{display:grid;gap:0}
  .sec-item{
    display:grid;grid-template-columns:auto 1fr;gap:18px;
    padding:22px 0;border-bottom:1px solid var(--line);
  }
  .sec-item:first-child{border-top:1px solid var(--line)}
  .sec-num{
    font-family:var(--font-num);font-size:14px;font-weight:700;color:var(--primary);
    width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
    background:rgba(25,224,180,.10);border:1px solid rgba(25,224,180,.26);
  }
  .sec-item h3{font-size:17px;font-weight:600;margin-bottom:4px}
  .sec-item p{color:var(--text-dim);font-size:14.5px;line-height:1.8}
  .record-card{padding:26px}
  .record-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
  .record-head h3{font-size:17px;font-weight:600}
  .record-row{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.09);
    font-size:14.5px;color:var(--text-dim);
  }
  .record-row:last-child{border-bottom:0}
  .record-row b{color:var(--text);font-weight:600}
  .record-chip{
    font-size:12px;padding:3px 10px;border-radius:999px;
    background:rgba(25,224,180,.12);color:var(--primary);border:1px solid rgba(25,224,180,.24);
  }
  .record-chip.warn{background:rgba(255,122,47,.12);color:var(--accent);border-color:rgba(255,122,47,.26)}
  .record-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:20px}
  .record-metrics div{
    padding:14px 12px;border-radius:var(--radius-sm);
    background:rgba(255,255,255,.03);border:1px solid var(--line);text-align:center;
  }
  .record-metrics span{display:block;font-family:var(--font-num);font-size:22px;color:var(--primary);line-height:1.4}
  .record-metrics em{font-style:normal;font-size:12.5px;color:var(--text-dim)}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:860px;margin:0 auto}
  .faq-item{
    border:1px solid var(--line);border-radius:var(--radius);
    background:var(--glass);margin-bottom:14px;overflow:hidden;
    transition:border-color .2s;
  }
  .faq-item[open]{border-color:rgba(25,224,180,.32)}
  .faq-item summary{
    list-style:none;cursor:pointer;position:relative;
    display:flex;align-items:center;gap:14px;
    padding:20px 54px 20px 22px;
    font-size:16.5px;font-weight:600;color:var(--text);min-height:58px;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::before{
    content:"";width:3px;height:20px;border-radius:2px;background:var(--primary);flex:0 0 auto;
  }
  .faq-item summary::after{
    content:"";position:absolute;right:22px;top:50%;
    width:12px;height:12px;margin-top:-7px;
    border-right:2px solid var(--text-dim);border-bottom:2px solid var(--text-dim);
    transform:rotate(45deg);transition:transform .22s cubic-bezier(.2,.8,.2,1),border-color .22s;
  }
  .faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--primary)}
  .faq-a{padding:0 22px 22px 39px;color:var(--text-dim);font-size:15px;line-height:1.85;animation:faqIn .3s ease both}
  @keyframes faqIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}

  /* ---------- CTA ---------- */
  .cta-panel{
    position:relative;overflow:hidden;
    padding:56px 48px;border-radius:24px;
    border:1px solid rgba(25,224,180,.22);
    background:
      radial-gradient(560px 260px at 90% 0%,rgba(25,224,180,.18),transparent 70%),
      linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;
  }
  .cta-panel h2{font-size:30px;font-weight:600;line-height:1.35;margin-bottom:12px}
  .cta-panel p{color:var(--text-dim);max-width:56ch}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap}
  @media (max-width:1023px){
    .cta-panel{grid-template-columns:1fr;padding:36px 26px;gap:24px}
    .cta-panel h2{font-size:25px}
  }

  /* ---------- 页脚 ---------- */
  .site-footer{
    border-top:1px solid var(--line);
    background:linear-gradient(180deg,rgba(11,18,38,.55),rgba(6,10,24,.96));
    padding:64px 0 28px;margin-top:32px;
  }
  .foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
  .foot-brand .brand{font-size:17px}
  .foot-brand p{color:var(--text-dim);font-size:14px;line-height:1.85;margin-top:14px;max-width:34ch}
  .foot-col h3{font-size:15px;font-weight:600;color:var(--text);margin-bottom:14px}
  .foot-col ul{display:grid;gap:10px}
  .foot-col a{color:var(--text-dim);font-size:14px;transition:color .18s}
  .foot-col a:hover{color:var(--primary)}
  .foot-col p{color:var(--text-dim);font-size:13.5px;line-height:1.85}
  .foot-bottom{
    display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    border-top:1px solid var(--line);margin-top:44px;padding-top:20px;
    color:var(--text-dim);font-size:13px;
  }
  @media (max-width:1023px){
    .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
    .site-footer{padding:48px 0 24px}
  }
  @media (max-width:560px){
    .foot-grid{grid-template-columns:1fr;gap:26px}
  }

  /* ---------- 移动端底部 Tab ---------- */
  .mobile-tab{
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    display:none;grid-template-columns:repeat(4,1fr);
    height:calc(60px + env(safe-area-inset-bottom));
    padding-bottom:env(safe-area-inset-bottom);
    background:rgba(8,13,28,.92);
    border-top:1px solid var(--line);
    backdrop-filter:blur(16px) saturate(140%);
    -webkit-backdrop-filter:blur(16px) saturate(140%);
  }
  .tab-item{
    position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
    font-size:10.5px;color:var(--text-dim);transition:color .18s;
  }
  .tab-item svg{width:22px;height:22px}
  .tab-item.is-active{color:var(--primary)}
  .tab-item.is-active::before{
    content:"";position:absolute;top:0;width:26px;height:2px;border-radius:2px;
    background:var(--primary);box-shadow:0 0 10px rgba(25,224,180,.8);
  }
  @media (max-width:1023px){
    .mobile-tab{display:grid}
    html body{padding-bottom:calc(84px + env(safe-area-inset-bottom))}
  }

  /* ---------- 悬浮转化条 ---------- */
  .float-cta{
    position:fixed;right:28px;bottom:28px;z-index:65;
    display:flex;align-items:center;gap:16px;
    padding:12px 14px 12px 20px;border-radius:999px;
    background:rgba(11,18,38,.86);
    border:1px solid var(--line);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    box-shadow:0 18px 40px -22px rgba(0,0,0,.9);
    font-size:14px;color:var(--text-dim);
    opacity:0;visibility:hidden;transform:translateY(14px);
    transition:opacity .28s ease,transform .28s cubic-bezier(.2,.8,.2,1),visibility .28s;
  }
  .float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
  @media (max-width:1023px){ .float-cta{display:none} }

  /* ---------- 进入视口动效 ---------- */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .4s cubic-bezier(.2,.8,.2,1),transform .4s cubic-bezier(.2,.8,.2,1)}
  .reveal.in{opacity:1;transform:translateY(0)}

  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
    .reveal{opacity:1;transform:none}
  }

/* roulang page: category2 */
:root{
  --bg:#060A18;
  --bg-soft:#0B1226;
  --primary:#19E0B4;
  --primary-deep:#0C8F79;
  --accent:#FF7A2F;
  --glass:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.10);
  --text:#E8EDF7;
  --text-dim:#9AA7C2;
  --r-xl:20px;
  --r-lg:16px;
  --r-sm:12px;
  --shadow:0 10px 30px -12px rgba(0,0,0,.6);
  --glow:0 12px 32px -10px rgba(25,224,180,.55);
  --ease:cubic-bezier(.2,.8,.2,1);
  --header-h:68px;
  --tab-h:60px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  padding-bottom:calc(var(--tab-h) + 24px + env(safe-area-inset-bottom));
}
@media (min-width:1024px){body{padding-bottom:0}}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1240px){.container{max-width:1240px}}
@media (max-width:520px){.container{padding:0 18px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:var(--header-h);
  display:flex;align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),backdrop-filter .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,10,24,.84);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom-color:var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;white-space:nowrap}
.brand-mark{
  width:34px;height:34px;display:grid;place-items:center;border-radius:11px;
  background:linear-gradient(135deg,rgba(25,224,180,.24),rgba(25,224,180,.05));
  border:1px solid rgba(25,224,180,.38);
  box-shadow:0 0 20px -6px rgba(25,224,180,.6);
  flex:none;
}
.brand-text{font-size:17px;color:#fff;letter-spacing:0}
.brand-text em{font-style:normal;color:var(--primary)}
@media (max-width:400px){.brand-text{font-size:15px}}

.nav-desktop{display:none;align-items:center;gap:4px}
@media (min-width:1024px){.nav-desktop{display:flex}}
.nav-link{position:relative;padding:9px 14px;border-radius:10px;font-size:15px;color:var(--text-dim);transition:color .18s var(--ease)}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);box-shadow:0 0 10px rgba(25,224,180,.8);
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{transform:scaleX(1)}

.nav-actions{display:flex;align-items:center;gap:10px}
.hamburger{
  display:grid;place-items:center;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:var(--glass);color:var(--text);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.hamburger:hover{border-color:rgba(25,224,180,.55);color:var(--primary)}
@media (min-width:1024px){.hamburger{display:none}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-primary{
  background:linear-gradient(135deg,#19E0B4 0%,#0C8F79 100%);
  color:#03130F;
  box-shadow:0 0 0 1px rgba(25,224,180,.35),var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(25,224,180,.5),0 16px 38px -10px rgba(25,224,180,.72)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(25,224,180,.35),0 6px 18px -12px rgba(25,224,180,.5)}
.btn-ghost{
  background:rgba(255,255,255,.03);border:1px solid var(--line);color:var(--text);
}
.btn-ghost:hover{border-color:rgba(25,224,180,.6);background:rgba(25,224,180,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.6;box-shadow:none;pointer-events:none}

.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600}
.link-arrow svg{transition:transform .18s var(--ease)}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:12px;line-height:1;font-weight:600;
}
.badge-accent{background:rgba(255,122,47,.12);color:var(--accent)}
.badge-mint{background:rgba(25,224,180,.12);color:var(--primary)}

.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:40px}
.chip{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:999px;
  font-size:14px;color:var(--text-dim);border:1px solid var(--line);background:var(--glass);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.chip:hover{color:var(--text);border-color:rgba(25,224,180,.45)}
.chip.is-on{
  background:var(--primary);color:#03130F;border-color:var(--primary);font-weight:600;
  box-shadow:0 10px 26px -12px rgba(25,224,180,.85);
}

/* ---------- 页面头图 ---------- */
.page-hero{position:relative;overflow:hidden;padding:128px 0 64px;border-bottom:1px solid var(--line)}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.30;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(720px 320px at 18% 0%,rgba(25,224,180,.30),transparent 68%),
    linear-gradient(180deg,rgba(6,10,24,.55) 0%,rgba(6,10,24,.94) 72%,var(--bg) 100%);
}
.hero-grid-lines{
  position:absolute;inset:0;opacity:.07;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:72px 72px;
}
.hero-inner{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-dim);margin-bottom:18px;flex-wrap:wrap}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:rgba(154,167,194,.55)}
.crumb .now{color:var(--text-dim)}
.page-hero h1{
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.25;font-weight:700;margin:14px 0 16px;letter-spacing:0;
}
.page-hero h1 em{font-style:normal;color:var(--primary)}
.hero-sub{max-width:70ch;color:var(--text-dim);font-size:16px;line-height:1.85}
.hero-anchors{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-anchors a{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  font-size:13px;color:var(--text-dim);border:1px solid var(--line);background:rgba(11,18,38,.6);
  transition:color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.hero-anchors a:hover{color:var(--primary);border-color:rgba(25,224,180,.55);transform:translateY(-2px)}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0}
@media (min-width:1024px){.section{padding:104px 0}}
.section-head{margin-bottom:44px;max-width:76ch}
.section-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:600;line-height:1.35;margin-bottom:12px}
.section-head p{color:var(--text-dim);font-size:15.5px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--primary);font-weight:600;letter-spacing:0;margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 8px rgba(25,224,180,.8)}

/* ---------- 交错分屏 ---------- */
.split-list{display:flex;flex-direction:column;gap:64px}
@media (min-width:1024px){.split-list{gap:96px}}
.split-row{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
@media (min-width:1024px){
  .split-row{grid-template-columns:1fr 1fr;gap:64px}
  .split-row:nth-child(even) .split-copy{order:2}
  .split-row:nth-child(even) .split-media{order:1}
}
.split-copy .num{
  display:inline-block;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:13px;font-weight:700;color:var(--primary);
  padding:4px 10px;border-radius:8px;background:rgba(25,224,180,.10);
  border:1px solid rgba(25,224,180,.28);margin-bottom:16px;
}
.split-copy h2{font-size:clamp(21px,2.2vw,27px);font-weight:600;line-height:1.4;margin-bottom:16px}
.split-copy p{color:var(--text-dim);font-size:15.5px;margin-bottom:18px}
.dot-list{display:flex;flex-direction:column;gap:12px;margin-bottom:22px}
.dot-list li{position:relative;padding-left:22px;color:var(--text);font-size:15px;line-height:1.8}
.dot-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:12px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 8px rgba(25,224,180,.75);
}
.split-media{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow),0 22px 60px -30px rgba(25,224,180,.45);
}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .35s var(--ease)}
.split-media:hover img{transform:scale(1.03)}
.split-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  box-shadow:inset 0 0 60px rgba(25,224,180,.16);
  background:linear-gradient(180deg,rgba(6,10,24,0) 55%,rgba(6,10,24,.5) 100%);
}

/* ---------- 数据面板 ---------- */
.glass-panel{
  position:relative;border-radius:var(--r-xl);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow);
  padding:32px 28px;
}
.glass-panel::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;border-radius:var(--r-xl) var(--r-xl) 0 0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);
}
@media (min-width:768px){.glass-panel{padding:44px 40px}}
.data-panel{
  background:
    radial-gradient(560px 220px at 92% -10%,rgba(25,224,180,.16),transparent 70%),
    linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
}
.data-panel .panel-head h2{font-size:clamp(21px,2.2vw,27px);font-weight:600;margin-bottom:8px}
.data-panel .panel-head p{color:var(--text-dim);font-size:15px;max-width:64ch}
.metric-row{
  display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:32px;
}
@media (min-width:900px){.metric-row{grid-template-columns:repeat(4,1fr);gap:24px}}
.metric{
  padding:20px 18px;border-radius:var(--r-lg);
  border:1px solid var(--line);background:rgba(6,10,24,.5);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.metric:hover{border-color:rgba(25,224,180,.5);transform:translateY(-3px);box-shadow:0 16px 40px -22px rgba(25,224,180,.8)}
.metric-num{
  display:block;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:38px;font-weight:700;line-height:1.1;color:var(--primary);letter-spacing:0;
  font-variant-numeric:tabular-nums;
}
.metric-num small{font-size:15px;color:var(--text-dim);margin-left:3px;font-weight:500}
.metric-label{display:block;margin-top:8px;font-size:13.5px;color:var(--text-dim)}

/* ---------- 路径节点 ---------- */
.route{position:relative;display:grid;grid-template-columns:1fr;gap:20px;margin-top:8px}
@media (min-width:768px){.route{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.route{grid-template-columns:repeat(4,1fr);gap:24px}}
.route-bar{height:3px;border-radius:3px;background:linear-gradient(90deg,var(--primary),rgba(25,224,180,.12));margin-bottom:32px;box-shadow:0 0 14px rgba(25,224,180,.5)}
.node{
  position:relative;padding:24px 20px 22px;border-radius:var(--r-lg);
  border:1px solid var(--line);background:var(--glass);
  transition:border-color .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.node:hover{border-color:rgba(25,224,180,.5);transform:translateY(-3px);background:rgba(255,255,255,.06)}
.node-dot{
  display:grid;place-items:center;width:34px;height:34px;border-radius:50%;
  background:rgba(25,224,180,.12);border:1px solid rgba(25,224,180,.5);
  color:var(--primary);font-family:ui-monospace,Menlo,monospace;font-size:14px;font-weight:700;
  box-shadow:0 0 18px -4px rgba(25,224,180,.75);margin-bottom:14px;
}
.node h3{font-size:17px;font-weight:600;margin-bottom:8px}
.node p{font-size:14.5px;color:var(--text-dim);line-height:1.8}

/* ---------- 清单 ---------- */
.check-grid{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:768px){.check-grid{grid-template-columns:repeat(2,1fr);gap:18px 28px}}
.check-item{
  display:flex;gap:14px;align-items:flex-start;padding:18px 20px;border-radius:var(--r-lg);
  border:1px solid var(--line);background:var(--glass);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.check-item:hover{border-color:rgba(25,224,180,.42);background:rgba(255,255,255,.055)}
.check-icon{
  flex:none;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  background:rgba(25,224,180,.12);border:1px solid rgba(25,224,180,.34);color:var(--primary);
}
.check-item p{font-size:14.8px;line-height:1.75}
.check-item strong{display:block;font-size:15.5px;font-weight:600;margin-bottom:4px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-lg);background:var(--glass);
  margin-bottom:14px;overflow:hidden;transition:border-color .2s var(--ease);
}
.faq-item[open]{border-color:rgba(25,224,180,.42)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  min-height:58px;padding:14px 20px;font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .idx{
  font-family:ui-monospace,Menlo,monospace;font-size:13px;color:var(--primary);flex:none;
}
.faq-item summary .plus{
  margin-left:auto;flex:none;width:22px;height:22px;position:relative;
  transition:transform .22s var(--ease);
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
}
.faq-item summary .plus::before{width:14px;height:2px;transform:translate(-50%,-50%)}
.faq-item summary .plus::after{width:2px;height:14px;transform:translate(-50%,-50%)}
.faq-item[open] summary .plus{transform:rotate(45deg)}
.faq-body{padding:0 20px 20px 54px;color:var(--text-dim);font-size:15px;line-height:1.85;animation:fadeIn .3s var(--ease)}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  border:1px solid rgba(25,224,180,.3);
  background:
    radial-gradient(620px 260px at 12% 0%,rgba(25,224,180,.22),transparent 70%),
    linear-gradient(150deg,rgba(11,18,38,.96),rgba(6,10,24,.96));
  padding:40px 28px;text-align:left;
}
@media (min-width:768px){.cta-panel{padding:56px 52px;display:flex;align-items:center;justify-content:space-between;gap:40px}}
.cta-panel h2{font-size:clamp(22px,2.4vw,30px);font-weight:600;line-height:1.4;margin-bottom:10px}
.cta-panel p{color:var(--text-dim);font-size:15.5px;max-width:60ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
@media (min-width:768px){.cta-actions{margin-top:0;flex:none}}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,18,38,.7),rgba(6,10,24,1));
  padding:56px 0 26px;margin-top:24px;
}
.foot-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:640px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.foot-grid{grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px}}
.foot-brand p{color:var(--text-dim);font-size:14px;line-height:1.85;margin-top:14px;max-width:42ch}
.foot-col h3{font-size:15px;font-weight:600;margin-bottom:14px;color:var(--text)}
.foot-col ul{display:flex;flex-direction:column;gap:10px}
.foot-col a{color:var(--text-dim);font-size:14px;transition:color .18s var(--ease)}
.foot-col a:hover{color:var(--primary)}
.foot-col p{color:var(--text-dim);font-size:14px;line-height:1.8}
.foot-bottom{
  margin-top:36px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  color:var(--text-dim);font-size:13px;
}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;padding:20px 22px 36px;
  background:rgba(6,10,24,.97);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--glass);display:grid;place-items:center;color:var(--text);
}
.drawer-close:hover{color:var(--primary);border-color:rgba(25,224,180,.5)}
.drawer .drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 4px;font-size:17px;font-weight:600;color:var(--text);
  border-bottom:1px solid var(--line);
}
.drawer .drawer-link.is-active{color:var(--primary)}
.drawer .drawer-link span{color:var(--text-dim);font-size:13px;font-weight:400}
.drawer .btn{margin-top:28px;width:100%}

/* ---------- 底部 Tab ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;align-items:stretch;
  background:rgba(9,14,30,.94);
  backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
@media (min-width:1024px){.tabbar{display:none}}
.tab-item{
  flex:1;position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;min-height:var(--tab-h);padding:8px 2px 6px;font-size:11px;color:var(--text-dim);
  transition:color .18s var(--ease);
}
.tab-item:hover{color:var(--text)}
.tab-item svg{width:22px;height:22px}
.tab-item.is-active{color:var(--primary)}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--primary);
  box-shadow:0 0 10px rgba(25,224,180,.9);
}

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

/* roulang page: category3 */
:root{
  --bg:#060A18;
  --bg-soft:#0B1226;
  --primary:#19E0B4;
  --primary-deep:#0C8F79;
  --accent:#FF7A2F;
  --glass:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.10);
  --text:#E8EDF7;
  --text-dim:#9AA7C2;
  --radius:16px;
  --radius-lg:20px;
  --shadow:0 10px 30px -12px rgba(0,0,0,.6);
  --shadow-glow:0 12px 32px -10px rgba(25,224,180,.55);
  --ease:cubic-bezier(.2,.8,.2,1);
  --tabs-h:60px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;letter-spacing:.02em}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,24,.72);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(16px) saturate(140%);
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.site-header.is-stuck{background:rgba(6,10,24,.9);border-bottom-color:var(--line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(25,224,180,.20),rgba(12,143,121,.06));
  border:1px solid rgba(25,224,180,.28);
}
.brand-text{font-size:17px;font-weight:700;line-height:1;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--primary)}
.nav-desktop{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;padding:9px 13px;font-size:15px;color:var(--text-dim);
  border-radius:10px;transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .18s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease);
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:11px}
.btn-primary{
  background-image:linear-gradient(135deg,#19E0B4 0%,#0C8F79 100%);
  color:#04211C;
  box-shadow:0 0 0 1px rgba(25,224,180,.35),0 12px 32px -10px rgba(25,224,180,.55);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(25,224,180,.45),0 18px 38px -10px rgba(25,224,180,.65)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(25,224,180,.3),0 6px 18px -10px rgba(25,224,180,.4)}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:rgba(25,224,180,.5);background:rgba(25,224,180,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn:disabled,.btn.is-disabled{opacity:.6;box-shadow:none;cursor:not-allowed}
.link-more{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;
}
.link-more svg{transition:transform .18s var(--ease)}
.link-more:hover svg{transform:translateX(3px)}

.hamburger{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);align-items:center;justify-content:center;cursor:pointer;
}
.hamburger:hover{border-color:rgba(25,224,180,.45)}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;background:rgba(6,10,24,.96);
  backdrop-filter:blur(18px);padding:24px;display:flex;flex-direction:column;gap:8px;
  opacity:0;pointer-events:none;transform:translateY(-14px);
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.drawer.is-open{opacity:1;pointer-events:auto;transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);cursor:pointer;display:grid;place-items:center;
}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 18px;border-radius:14px;border:1px solid var(--line);
  background:var(--glass);font-size:16px;font-weight:600;
}
.drawer-link.is-active{color:var(--primary);border-color:rgba(25,224,180,.35)}
.drawer-search{
  display:flex;align-items:center;gap:10px;margin:4px 0 12px;
  padding:0 16px;height:48px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);color:var(--text-dim);font-size:14px;
}
.drawer-cta{margin-top:auto}

/* ---------- page head ---------- */
.page-head{
  position:relative;overflow:hidden;
  padding:64px 0 52px;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(60% 120% at 18% 0%,rgba(25,224,180,.22) 0%,rgba(25,224,180,0) 62%),
    linear-gradient(180deg,rgba(6,10,24,.86) 0%,rgba(6,10,24,.94) 78%,var(--bg) 100%);
}
.page-head .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-dim);margin-bottom:18px;
}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .cur{color:rgba(154,167,194,.75)}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:0;
}
.badge-signal{background:rgba(255,122,47,.12);color:#FFB183}
.badge-mint{background:rgba(25,224,180,.12);color:var(--primary)}
.page-head h1{
  font-size:42px;line-height:1.28;font-weight:700;margin:14px 0 16px;max-width:22ch;
}
.page-head .lead{font-size:17px;color:var(--text-dim);max-width:60ch}

/* ---------- search panel ---------- */
.search-panel{
  margin-top:-34px;position:relative;z-index:5;
  background:rgba(11,18,38,.82);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  backdrop-filter:blur(14px) saturate(140%);
  padding:26px 28px;
}
.search-panel h2{font-size:20px;font-weight:600;margin-bottom:6px}
.search-panel .sub{font-size:14px;color:var(--text-dim);margin-bottom:18px}
.search-row{display:flex;gap:12px;flex-wrap:wrap}
.search-input{
  flex:1 1 320px;height:52px;padding:0 18px;border-radius:12px;
  background:rgba(255,255,255,.035);border:1px solid var(--line);
  color:var(--text);font-size:15px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-input::placeholder{color:var(--text-dim)}
.search-input:focus{outline:none;border-color:rgba(25,224,180,.65);box-shadow:0 0 0 3px rgba(25,224,180,.14)}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.chip{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  font-size:13px;color:var(--text-dim);border:1px solid var(--line);background:rgba(255,255,255,.02);
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.chip:hover{color:var(--primary);border-color:rgba(25,224,180,.45);background:rgba(25,224,180,.07)}
.chip.is-on{background:rgba(25,224,180,.14);color:var(--primary);border-color:rgba(25,224,180,.35)}

/* ---------- faq layout ---------- */
.section{padding:86px 0}
.section-tight{padding:64px 0}
.faq-layout{
  display:grid;grid-template-columns:284px minmax(0,1fr);gap:34px;align-items:start;
}
.rail-card{
  position:sticky;top:96px;
  border:1px solid var(--line);border-radius:var(--radius-lg);
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  padding:24px 22px;box-shadow:var(--shadow);
}
.rail-card h2{font-size:17px;font-weight:600;margin-bottom:6px}
.rail-card .tip{font-size:13px;color:var(--text-dim);margin-bottom:20px}
.rail{position:relative;padding-left:24px}
.rail::before{
  content:"";position:absolute;left:5px;top:10px;bottom:14px;width:1px;
  background:linear-gradient(180deg,rgba(25,224,180,.75) 0%,rgba(25,224,180,.05) 100%);
}
.rail-item{
  position:relative;display:block;padding:8px 0 16px;font-size:14px;color:var(--text-dim);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.rail-item::before{
  content:"";position:absolute;left:-23px;top:16px;width:9px;height:9px;border-radius:50%;
  background:var(--bg);border:2px solid rgba(25,224,180,.55);
  transition:box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.rail-item:hover{color:var(--primary);transform:translateX(3px)}
.rail-item:hover::before{border-color:var(--primary);box-shadow:0 0 0 4px rgba(25,224,180,.14)}
.rail-item.is-now{color:var(--primary)}
.rail-item.is-now::before{background:var(--primary);border-color:var(--primary);box-shadow:0 0 0 4px rgba(25,224,180,.16)}
.rail-fig{
  margin-top:22px;border-radius:14px;overflow:hidden;border:1px solid var(--line);position:relative;
}
.rail-fig img{width:100%;aspect-ratio:16/10;object-fit:cover}
.rail-fig figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:10px 12px;font-size:12px;
  background:linear-gradient(180deg,rgba(6,10,24,0) 0%,rgba(6,10,24,.88) 100%);color:var(--text-dim);
}

.faq-cols{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.faq-group-title{
  display:flex;align-items:center;gap:10px;font-size:18px;font-weight:600;margin-bottom:14px;
}
.faq-group-title span.bar{width:3px;height:18px;border-radius:2px;background:var(--primary)}
.faq-group{margin-bottom:26px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  margin-bottom:12px;overflow:hidden;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.faq-item:hover{border-color:rgba(25,224,180,.28)}
.faq-item[open]{border-color:rgba(25,224,180,.4);box-shadow:0 10px 30px -18px rgba(25,224,180,.5)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:12px;
  min-height:56px;padding:17px 18px;font-size:15.5px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-num{
  flex:0 0 auto;font-size:13px;font-weight:700;color:var(--primary);
  padding-top:2px;min-width:22px;
}
.faq-ico{flex:0 0 auto;margin-left:auto;color:var(--text-dim);transition:transform .2s var(--ease),color .2s var(--ease)}
.faq-item[open] .faq-ico{transform:rotate(45deg);color:var(--primary)}
.faq-body{
  padding:0 18px 18px;font-size:14.5px;line-height:1.9;color:var(--text-dim);
  border-top:1px solid rgba(255,255,255,.06);margin-top:0;padding-top:14px;
  animation:rise .3s var(--ease) both;
}

/* ---------- cta strip ---------- */
.cta-strip{
  border:1px solid var(--line);border-radius:var(--radius-lg);
  background:
    radial-gradient(90% 140% at 8% 0%,rgba(25,224,180,.16) 0%,rgba(25,224,180,0) 60%),
    rgba(11,18,38,.72);
  backdrop-filter:blur(14px) saturate(140%);
  padding:38px 36px;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;box-shadow:var(--shadow);
}
.cta-strip h2{font-size:26px;font-weight:600;margin-bottom:10px}
.cta-strip p{font-size:15px;color:var(--text-dim);max-width:62ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.mini-stats{display:flex;gap:28px;flex-wrap:wrap;margin-top:18px}
.mini-stats .item b{display:block;font-size:22px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums}
.mini-stats .item span{font-size:13px;color:var(--text-dim)}

/* ---------- footer ---------- */
.site-footer{
  border-top:1px solid var(--line);background:var(--bg-soft);
  padding:64px 0 28px;margin-top:20px;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.foot-brand .brand{margin-bottom:14px}
.foot-brand p{font-size:14px;color:var(--text-dim);max-width:34ch}
.foot-col h3{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px}
.foot-col ul li{margin-bottom:10px}
.foot-col ul a{font-size:14px;color:var(--text-dim);transition:color .18s var(--ease),padding-left .18s var(--ease)}
.foot-col ul a:hover{color:var(--primary);padding-left:4px}
.foot-col p{font-size:13.5px;color:var(--text-dim);max-width:36ch}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-dim);
}

/* ---------- mobile tabbar ---------- */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  height:calc(var(--tabs-h) + env(safe-area-inset-bottom,0px));
  padding-bottom:env(safe-area-inset-bottom,0px);
  background:rgba(8,13,28,.94);backdrop-filter:blur(16px) saturate(140%);
  border-top:1px solid var(--line);
}
.tabbar-inner{display:grid;grid-template-columns:repeat(4,1fr);height:var(--tabs-h)}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:10.5px;color:var(--text-dim);transition:color .18s var(--ease);
}
.tab-item svg{width:22px;height:22px}
.tab-item.is-active{color:var(--primary)}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;width:26px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(25,224,180,.8);
}
.tab-item:active{background:rgba(25,224,180,.06)}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:65;
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 18px;border-radius:999px;
  background:rgba(11,18,38,.9);border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow);
  opacity:0;pointer-events:none;transform:translateY(12px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.float-cta.is-show{opacity:1;pointer-events:auto;transform:translateY(0)}
.float-cta .txt{font-size:13.5px;color:var(--text-dim)}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(16px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .42s var(--ease),transform .42s var(--ease)}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-desktop,.nav-actions .btn{display:none}
  .hamburger{display:inline-flex}
  .tabbar{display:block}
  .float-cta{display:none}
  body{padding-bottom:calc(var(--tabs-h) + env(safe-area-inset-bottom,0px) + 24px)}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .faq-layout{grid-template-columns:1fr;gap:26px}
  .rail-card{position:static}
  .page-head{padding:48px 0 44px}
  .page-head h1{font-size:34px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .faq-cols{grid-template-columns:1fr}
  .cta-strip{padding:28px 22px;flex-direction:column;align-items:flex-start}
  .cta-strip h2{font-size:22px}
  .search-panel{padding:22px 18px}
  .btn{width:100%}
  .search-row .btn{width:100%}
  .cta-actions{width:100%}
}
@media (max-width:519px){
  .container{padding:0 16px}
  .page-head h1{font-size:30px}
  .page-head .lead{font-size:15.5px}
  .foot-grid{grid-template-columns:1fr}
  .brand-text{font-size:15px}
}