/* roulang page: index */
:root{
  --bg:#060A12;
  --surface-1:#0B1220;
  --surface-2:#101A2B;
  --indigo:#3D6BFF;
  --glow:#2EE6C9;
  --amber:#FFB454;
  --text-1:#E9F0FA;
  --text-2:#A7B6CC;
  --text-3:#74849C;
  --link:#8FB6FF;
  --line:rgba(148,190,255,.16);
  --line-soft:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --container:1200px;
  --gap:24px;
  --shadow-card:0 24px 60px -28px rgba(3,8,18,.9);
  --glow-shadow:0 0 0 1px rgba(46,230,201,.35),0 14px 44px -10px rgba(46,230,201,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--link);text-decoration:underline;text-underline-offset:3px;transition:color .2s var(--ease)}
a:hover{color:#B9D1FF;text-decoration-thickness:2px}
p{margin:0 0 1.2em}
h1,h2,h3,h4{margin:0;font-weight:650;line-height:1.3;letter-spacing:-.01em;color:var(--text-1)}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--glow);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,10,18,.72);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(6,10,18,.9)}
.nav{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:inline-flex;align-items:baseline;gap:7px;text-decoration:none;white-space:nowrap}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.02em;color:var(--text-1)}
.brand-sub{font-size:11px;font-weight:600;letter-spacing:.18em;color:var(--glow)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-links a{
  display:inline-block;padding:8px 13px;border-radius:999px;
  font-size:13.5px;line-height:1.4;color:var(--text-2);text-decoration:none;
  transition:background .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.06);text-decoration:none}
.nav-links a.active{background:rgba(46,230,201,.13);color:var(--glow)}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-login{font-size:14px;color:var(--text-2);text-decoration:none}
.nav-login:hover{color:var(--text-1)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.05);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-1);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,7,14,.7);z-index:90;
  opacity:0;pointer-events:none;transition:opacity .25s var(--ease);
}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:95;
  background:var(--surface-1);border-left:1px solid var(--line);
  padding:22px 22px calc(22px + env(safe-area-inset-bottom));
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);cursor:pointer;font-size:18px;line-height:1;
}
.drawer a.drawer-link{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:12px;
  color:var(--text-2);text-decoration:none;font-size:15px;
}
.drawer a.drawer-link:hover,.drawer a.drawer-link.active{background:rgba(46,230,201,.12);color:var(--glow)}
.drawer .btn{margin-top:16px;width:100%}

/* ---------- buttons / badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.btn:hover{text-decoration:none}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-xs{height:32px;padding:0 16px;font-size:13px}
.btn-primary{
  background:linear-gradient(110deg,#2EE6C9 0%,#3D6BFF 100%);
  color:#04121A;box-shadow:var(--glow-shadow);border-radius:999px;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(46,230,201,.5),0 18px 52px -8px rgba(46,230,201,.55);color:#04121A}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(46,230,201,.3),0 8px 24px -12px rgba(46,230,201,.4)}
.btn-ghost{
  background:var(--glass);border-color:var(--line);color:var(--text-1);
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(46,230,201,.5);color:var(--text-1)}
.btn-ghost:active{transform:translateY(0)}
.btn-text{
  background:none;border:0;padding:0;height:auto;color:var(--link);
  font-weight:600;text-decoration:underline;text-underline-offset:4px;
}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;
  border-radius:999px;border:1px solid var(--line);background:var(--glass);
  font-size:12.5px;letter-spacing:.04em;color:var(--text-2);white-space:nowrap;
}
.badge-glow{border-color:rgba(46,230,201,.42);color:var(--glow);background:rgba(46,230,201,.09)}
.badge-amber{border-color:rgba(255,180,84,.45);color:var(--amber);background:rgba(255,180,84,.08)}
.badge-lock{color:var(--text-3)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:84px 0 92px;border-bottom:1px solid var(--line)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.3;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(6,10,18,.5) 0%,rgba(6,10,18,.94) 78%,var(--bg) 100%),
    radial-gradient(760px 380px at 14% 8%,rgba(61,107,255,.28),transparent 70%),
    radial-gradient(620px 320px at 82% 22%,rgba(46,230,201,.16),transparent 72%);
}
.hero-bg::before{
  content:"";position:absolute;inset:0;opacity:.08;
  background-image:linear-gradient(rgba(148,190,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(148,190,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:999px;border:1px solid rgba(46,230,201,.32);background:rgba(46,230,201,.08);
  font-size:12.5px;letter-spacing:.06em;color:var(--glow);margin-bottom:22px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--glow);display:block}
.hero h1{
  font-size:46px;line-height:1.24;letter-spacing:-.015em;margin:0 0 20px;font-weight:700;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(180deg,transparent 66%,rgba(46,230,201,.35) 66%,rgba(46,230,201,.35) 92%,transparent 92%);
  padding:0 2px;
}
.hero-sub{font-size:17px;line-height:1.9;color:var(--text-2);max-width:560px;margin:0 0 32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags span{
  font-size:13px;letter-spacing:.04em;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  padding:5px 13px;border-radius:999px;
}
.hero-panel{
  border-radius:var(--radius-card);border:1px solid var(--line);
  background:rgba(255,255,255,.055);
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.panel-bar{
  display:flex;align-items:center;gap:8px;padding:13px 18px;
  border-bottom:1px solid var(--line-soft);background:rgba(255,255,255,.03);
}
.panel-bar i{width:6px;height:6px;border-radius:50%;background:var(--text-3);display:block}
.panel-bar i:first-child{background:rgba(255,107,107,.8)}
.panel-bar i:nth-child(2){background:rgba(255,180,84,.8)}
.panel-bar i:nth-child(3){background:rgba(46,230,201,.8)}
.panel-bar b{margin-left:8px;font-size:12.5px;font-weight:500;letter-spacing:.06em;color:var(--text-3)}
.panel-body{padding:8px 18px 18px}
.tier-row{
  display:flex;align-items:center;gap:12px;padding:15px 0;
  border-bottom:1px solid var(--line-soft);
}
.tier-row:last-child{border-bottom:0}
.tier-dot{
  width:34px;height:34px;border-radius:10px;flex:none;
  border:1px solid rgba(46,230,201,.36);background:rgba(46,230,201,.1);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;color:var(--glow);
}
.tier-row:nth-child(2) .tier-dot{border-color:rgba(61,107,255,.5);background:rgba(61,107,255,.14);color:#8FB6FF}
.tier-row:nth-child(3) .tier-dot{border-color:rgba(255,180,84,.45);background:rgba(255,180,84,.1);color:var(--amber)}
.tier-text{min-width:0;flex:1}
.tier-text strong{display:block;font-size:15px;font-weight:600;color:var(--text-1);line-height:1.5}
.tier-text small{display:block;font-size:12.5px;color:var(--text-3);line-height:1.6}
.panel-foot{
  border-top:1px solid var(--line-soft);padding:14px 18px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12.5px;color:var(--text-3);
}

/* ---------- section base ---------- */
.section{padding:96px 0}
.section.tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{font-size:30px;line-height:1.34;margin:0 0 14px}
.section-head p{margin:0;color:var(--text-2);font-size:15.5px;line-height:1.9}
.section-head-row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:44px;flex-wrap:wrap;
}
.section-head-row .section-head{margin-bottom:0}

/* ---------- table ---------- */
.table-wrap{
  border-radius:16px;border:1px solid var(--line);
  background:rgba(255,255,255,.045);
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.table-scroll{overflow-x:auto}
table.compare{width:100%;border-collapse:collapse;min-width:820px}
table.compare caption{
  padding:22px 24px;text-align:left;font-size:15px;color:var(--text-2);
  border-bottom:1px solid var(--line);background:rgba(255,255,255,.03);
}
table.compare thead th{
  position:sticky;top:0;z-index:2;
  background:rgba(11,18,32,.94);
  padding:16px 18px;text-align:center;font-size:14px;font-weight:600;color:var(--text-1);
  border-bottom:1px solid var(--line);
}
table.compare thead th:first-child{text-align:left;color:var(--text-2);font-weight:500}
table.compare tbody th{
  text-align:left;padding:16px 18px;font-weight:500;font-size:14.5px;color:var(--text-1);
  border-bottom:1px solid var(--line-soft);
}
table.compare tbody th small{display:block;font-size:12.5px;color:var(--text-3);font-weight:400;line-height:1.6}
table.compare tbody td{
  padding:16px 18px;text-align:center;font-size:14px;color:var(--text-2);
  border-bottom:1px solid var(--line-soft);
}
table.compare tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
table.compare tbody tr:last-child th,table.compare tbody tr:last-child td{border-bottom:0}
.tick{
  display:inline-flex;width:18px;height:18px;border-radius:50%;
  border:1.5px solid var(--glow);align-items:center;justify-content:center;
  color:var(--glow);font-size:11px;line-height:1;
}
.dash{color:var(--text-3)}
.col-rec{background:rgba(46,230,201,.05);border-left:1px solid rgba(46,230,201,.28);border-right:1px solid rgba(46,230,201,.28)}
thead th.col-rec{position:relative;color:var(--glow)}
thead th.col-rec .rec-flag{
  position:absolute;top:6px;right:10px;font-size:10.5px;letter-spacing:.08em;
  color:var(--amber);border:1px solid rgba(255,180,84,.45);background:rgba(255,180,84,.1);
  border-radius:999px;padding:1px 8px;font-weight:600;
}
.table-note{padding:16px 24px;font-size:13px;color:var(--text-3);border-top:1px solid var(--line-soft);background:rgba(255,255,255,.02)}

/* ---------- tier bands ---------- */
.bands{display:flex;flex-direction:column;gap:16px}
.band{
  display:grid;grid-template-columns:96px 1fr auto;gap:24px;align-items:center;
  padding:24px 28px;border-radius:var(--radius-card);
  border:1px solid var(--line);background:rgba(255,255,255,.05);
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.band:hover{transform:translateY(-2px);border-color:rgba(46,230,201,.42)}
.band:nth-child(2){padding-top:29px;padding-bottom:29px}
.band:nth-child(3){padding-top:34px;padding-bottom:34px}
.band:nth-child(4){padding-top:39px;padding-bottom:39px}
.band-index{font-size:26px;font-weight:700;color:rgba(148,190,255,.34);letter-spacing:.02em;line-height:1}
.band-main h3{font-size:19px;margin:0 0 6px}
.band-main p{margin:0;font-size:14px;color:var(--text-2);line-height:1.7}
.band-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.band-points span{
  font-size:12.5px;color:var(--text-2);border:1px solid var(--line-soft);
  background:rgba(255,255,255,.04);border-radius:999px;padding:3px 11px;
}
.band.current{border-left:3px solid var(--glow);box-shadow:var(--glow-shadow);background:rgba(46,230,201,.06)}

/* ---------- preview grid ---------- */
.preview-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.preview-card{
  border-radius:var(--radius-card);border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);overflow:hidden;position:relative;
  transition:transform .22s var(--ease),border-color .22s var(--ease);
  display:flex;flex-direction:column;
}
.preview-card:hover{transform:translateY(-2px);border-color:rgba(46,230,201,.42)}
.preview-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.preview-thumb img{
  width:100%;height:100%;object-fit:cover;
  border-bottom:1px solid rgba(255,255,255,.12);
  transition:transform .4s var(--ease);
}
.preview-card:hover .preview-thumb img{transform:scale(1.03)}
.preview-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,0) 42%,rgba(6,10,18,.78) 100%);
}
.preview-card.locked .preview-thumb img{opacity:.45}
.preview-lock{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:2;
  width:42px;height:42px;border-radius:50%;
  border:1px solid rgba(46,230,201,.45);background:rgba(6,10,18,.72);
  display:flex;align-items:center;justify-content:center;color:var(--glow);
}
.preview-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.preview-body h3{font-size:17px;line-height:1.5;margin:0}
.preview-body p{margin:0;font-size:14px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.preview-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--text-3)}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{
  padding:26px 24px;border-radius:var(--radius-card);border:1px solid var(--line);
  background:rgba(255,255,255,.045);
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
}
.stat b{display:block;font-size:32px;font-weight:700;color:var(--text-1);line-height:1.1;letter-spacing:-.02em}
.stat span{display:block;margin-top:8px;font-size:13.5px;color:var(--text-2)}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:32px;align-items:start}
.news-main{
  border-radius:var(--radius-card);border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .22s var(--ease),border-color .22s var(--ease);
  display:block;text-decoration:none;color:inherit;
}
.news-main:hover{transform:translateY(-2px);border-color:rgba(46,230,201,.42);text-decoration:none}
.news-main-thumb{aspect-ratio:16/9;overflow:hidden;position:relative;background:var(--surface-2)}
.news-main-thumb img{width:100%;height:100%;object-fit:cover}
.news-main-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,0) 45%,rgba(6,10,18,.7) 100%);
}
.news-main-body{padding:24px 26px 28px}
.news-main-body .badge{margin-bottom:14px}
.news-main-body h3{font-size:21px;line-height:1.5;margin:0 0 12px}
.news-main-body p{
  margin:0 0 18px;font-size:14.5px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-main-meta{display:flex;align-items:center;gap:14px;font-size:12.5px;color:var(--text-3)}
.news-list{display:flex;flex-direction:column}
.news-row{
  display:flex;align-items:center;gap:18px;padding:18px 4px;
  border-bottom:1px solid var(--line-soft);
  transition:background .2s var(--ease);
  border-radius:10px;
}
.news-row:hover{background:rgba(255,255,255,.045)}
.news-row a{color:var(--text-1);text-decoration:none;font-size:15px;line-height:1.6;flex:1;min-width:0;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.news-row a:hover{color:var(--glow)}
.news-row time{font-size:12.5px;color:var(--text-3);white-space:nowrap}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;color:var(--text-2);
  background:rgba(255,255,255,.03);
}
.empty-state .empty-ico{
  width:52px;height:52px;border-radius:16px;margin:0 auto 16px;
  border:1px solid rgba(46,230,201,.35);background:rgba(46,230,201,.08);
  display:flex;align-items:center;justify-content:center;color:var(--glow);font-size:20px;
}
.empty-state p{margin:0 0 18px;font-size:14.5px}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:8fr 4fr;gap:32px;align-items:start}
.faq-list{border-top:1px solid var(--line-soft)}
.faq-item{border-bottom:1px solid var(--line-soft)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;font-size:16.5px;font-weight:600;color:var(--text-1);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-size:16px;color:var(--glow);transition:transform .2s var(--ease);
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg)}
.faq-item .faq-answer{padding:0 4px 24px;color:var(--text-2);font-size:14.5px;line-height:1.9;max-width:92%}
.faq-side{
  position:sticky;top:96px;
  padding:26px 24px;border-radius:var(--radius-card);
  border:1px solid rgba(46,230,201,.28);background:rgba(255,255,255,.055);
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.faq-side h3{font-size:16px;margin:0 0 6px}
.faq-side p.lead{margin:0 0 18px;font-size:13px;color:var(--text-3);line-height:1.7}
.faq-side ul{display:flex;flex-direction:column;gap:12px;margin:0 0 22px}
.faq-side li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7}
.faq-side li::before{content:"";flex:none;width:6px;height:6px;border-radius:2px;background:var(--glow);margin-top:9px}
.faq-side .btn{width:100%}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:22px;border:1px solid var(--line);
  background:rgba(255,255,255,.055);
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
  padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow-card);
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(46,230,201,0),rgba(46,230,201,.9),rgba(61,107,255,0));
}
.cta-band h2{font-size:26px;margin:0 0 10px}
.cta-band p{margin:0;color:var(--text-2);font-size:14.5px}
.cta-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.cta-tags span{
  font-size:12.5px;color:var(--text-2);border:1px solid var(--line-soft);
  background:rgba(255,255,255,.04);border-radius:999px;padding:3px 12px;
}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--surface-1);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{margin:0;font-size:13.5px;color:var(--text-3);line-height:1.9;max-width:300px}
.footer-col h4{font-size:13.5px;letter-spacing:.08em;color:var(--text-3);font-weight:600;margin:0 0 16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2);text-decoration:none}
.footer-col a:hover{color:var(--glow)}
.footer-col li{font-size:14px;color:var(--text-2)}
.footer-bottom{
  border-top:1px solid var(--line-soft);padding:22px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);text-decoration:none}
.footer-bottom a:hover{color:var(--glow)}

/* ---------- mobile bottom bar ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  height:calc(64px + env(safe-area-inset-bottom));
  padding:0 16px env(safe-area-inset-bottom);
  align-items:center;gap:14px;
  background:rgba(6,10,18,.88);
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
  border-top:1px solid var(--line);
}
.mobile-bar span{font-size:12.5px;color:var(--text-2);line-height:1.4;flex:1}
.mobile-bar .btn{height:44px;padding:0 20px;font-size:14px;flex:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero h1{font-size:40px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .nav-actions .nav-login{display:none}
  .nav-actions .btn{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .hero{padding:64px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:36px}
  .section{padding:72px 0}
  .section.tight{padding:56px 0}
  .preview-grid{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr;gap:24px}
  .faq-layout{grid-template-columns:1fr}
  .faq-side{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .band{grid-template-columns:64px 1fr;gap:18px}
  .band .btn{grid-column:1 / -1;justify-self:start}
}
@media (max-width:767px){
  body{font-size:15.5px;padding-bottom:80px}
  .container{padding:0 18px}
  .nav{height:64px;gap:12px}
  .hero{padding:52px 0 60px}
  .hero h1{font-size:31px;line-height:1.32}
  .hero-sub{font-size:15.5px;margin-bottom:26px}
  .hero-actions .btn{width:100%}
  .hero-tags span{font-size:12.5px}
  .section{padding:56px 0}
  .section.tight{padding:48px 0}
  .section-head h2{font-size:23px}
  .section-head-row{margin-bottom:28px}
  .preview-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr;gap:14px}
  .stat{padding:20px 18px}
  .stat b{font-size:26px}
  .band{padding:22px 20px;grid-template-columns:48px 1fr}
  .band:nth-child(2),.band:nth-child(3),.band:nth-child(4){padding-top:22px;padding-bottom:22px}
  .band-index{font-size:20px}
  .cta-band{padding:30px 22px;flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
  .mobile-bar{display:flex}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .site-footer{padding-top:48px}
  .faq-item summary{font-size:15.5px;padding:18px 2px}
  .news-row a{font-size:14px}
  .news-row{flex-wrap:wrap;gap:8px}
  .news-row time{width:100%}
  .table-note{font-size:12.5px}
}
@media (max-width:420px){
  .hero h1{font-size:28px}
  .stats{grid-template-columns:1fr}
  .brand-name{font-size:17px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --bg:#060A12;
  --surface-1:#0B1220;
  --surface-2:#101A2B;
  --glass:rgba(255,255,255,.055);
  --line:rgba(148,190,255,.16);
  --line-soft:rgba(255,255,255,.08);
  --indigo:#3D6BFF;
  --glow:#2EE6C9;
  --amber:#FFB454;
  --text-1:#E9F0FA;
  --text-2:#A7B6CC;
  --text-3:#74849C;
  --prose:#CFDCEC;
  --link:#8FB6FF;
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow-card:0 24px 60px -28px rgba(3,8,18,.9);
  --glow-ring:0 0 0 1px rgba(46,230,201,.35), 0 14px 44px -10px rgba(46,230,201,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --ff:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-1);
  font-family:var(--ff);
  font-size:16px;
  line-height:1.85;
  letter-spacing:-.005em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(620px 420px at 10% -6%, rgba(46,230,201,.10), transparent 70%),
    radial-gradient(880px 520px at 90% -4%, rgba(61,107,255,.16), transparent 72%),
    radial-gradient(700px 500px at 50% 108%, rgba(61,107,255,.08), transparent 70%);
}
img{max-width:100%;display:block;}
a{color:var(--link);text-decoration:underline;text-underline-offset:3px;}
a:hover{text-decoration-thickness:2px;}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.28;letter-spacing:-.01em;color:var(--text-1);}
p{margin:0;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;}
::selection{background:rgba(46,230,201,.28);color:#031018;}
:focus-visible{outline:2px solid var(--glow);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  text-decoration:none;cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn-primary{
  background:linear-gradient(135deg,var(--glow) 0%,var(--indigo) 100%);
  color:#04121A;border-radius:var(--r-pill);box-shadow:var(--glow-ring);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(46,230,201,.55),0 18px 52px -8px rgba(46,230,201,.6);}
.btn-secondary{
  background:var(--glass);color:var(--text-1);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
}
.btn-secondary:hover{transform:translateY(-2px);border-color:rgba(46,230,201,.45);color:#fff;}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.45;cursor:not-allowed;}

/* ---------- 徽标 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.04em;line-height:1.6;
  background:rgba(255,255,255,.06);border:1px solid var(--line);
  color:var(--text-2);white-space:nowrap;
}
.badge-amber{color:var(--amber);border-color:rgba(255,180,84,.42);background:rgba(255,180,84,.08);}
.badge-glow{color:var(--glow);border-color:rgba(46,230,201,.4);background:rgba(46,230,201,.09);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,18,.72);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(148,190,255,.12);
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.site-header.scrolled{background:rgba(6,10,18,.88);border-bottom-color:rgba(148,190,255,.22);}
.nav{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:inline-flex;align-items:baseline;gap:7px;text-decoration:none;flex-shrink:0;}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.08em;color:var(--text-1);}
.brand-sub{font-size:12px;letter-spacing:.14em;color:var(--glow);}
.nav-links{display:flex;align-items:center;gap:2px;flex:1;min-width:0;}
.nav-links a{
  display:inline-block;padding:8px 12px;border-radius:var(--r-pill);
  font-size:14px;color:var(--text-2);text-decoration:none;white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-links a.active{color:var(--glow);background:rgba(46,230,201,.10);}
.nav-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.nav-login{font-size:14px;color:var(--text-2);text-decoration:none;transition:color .2s var(--ease);}
.nav-login:hover{color:var(--text-1);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;
  background:var(--text-1);transform:translateX(-50%);content:"";
}
.nav-toggle span{top:calc(50% - 1px);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(3,7,14,.68);backdrop-filter:blur(4px);z-index:90;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:100;
  width:min(86vw,340px);
  background:rgba(11,18,32,.96);
  backdrop-filter:blur(22px) saturate(140%);
  border-left:1px solid var(--line);
  transform:translateX(102%);
  transition:transform .28s var(--ease);
  display:flex;flex-direction:column;gap:22px;
  padding:22px 22px calc(22px + env(safe-area-inset-bottom));
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:38px;height:38px;border-radius:12px;background:rgba(255,255,255,.05);
  border:1px solid var(--line);color:var(--text-1);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-links{display:flex;flex-direction:column;}
.drawer-links a{
  display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:12px;
  font-size:15px;color:var(--text-2);text-decoration:none;
  border-bottom:1px solid var(--line-soft);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.drawer-links a:hover,.drawer-links a.active{background:rgba(46,230,201,.09);color:var(--glow);}

/* ---------- 文章头 ---------- */
.article-hero{position:relative;padding:36px 0 44px;overflow:hidden;border-bottom:1px solid rgba(148,190,255,.12);}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.2;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,.55) 0%,rgba(6,10,18,.9) 65%,var(--bg) 100%);
}
.article-hero .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;font-size:13px;color:var(--text-3);margin-bottom:22px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:rgba(148,190,255,.35);}
.breadcrumb a{color:var(--text-2);text-decoration:none;}
.breadcrumb a:hover{color:var(--glow);}
.breadcrumb .current{color:var(--text-3);max-width:min(52vw,420px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{font-size:clamp(26px,3.6vw,40px);line-height:1.3;max-width:900px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:20px;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.article-meta .sep{width:1px;height:12px;background:rgba(148,190,255,.24);}
.article-meta time{color:var(--text-2);}

/* ---------- 正文布局 ---------- */
.article-wrap{padding:56px 0 24px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:56px;align-items:start;}

.prose{max-width:760px;font-size:16px;line-height:1.95;color:var(--prose);}
.prose>*:first-child{margin-top:0;}
.prose h2{
  font-size:26px;line-height:1.38;margin:56px 0 20px;padding-left:16px;
  border-left:3px solid var(--glow);color:var(--text-1);scroll-margin-top:96px;
}
.prose h3{font-size:19px;margin:36px 0 14px;color:var(--text-1);scroll-margin-top:96px;}
.prose h4{font-size:16px;margin:26px 0 10px;color:var(--text-1);}
.prose p{margin:0 0 1.2em;}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:22px;}
.prose ul{list-style:none;padding-left:6px;}
.prose ul>li{position:relative;padding-left:20px;margin-bottom:.6em;}
.prose ul>li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--glow);opacity:.85;
}
.prose ol{list-style:decimal;color:var(--prose);}
.prose ol>li{margin-bottom:.6em;padding-left:4px;}
.prose ol>li::marker{color:var(--glow);font-variant-numeric:tabular-nums;}
.prose a{color:var(--link);text-decoration:underline;text-underline-offset:3px;}
.prose strong{color:#fff;font-weight:600;}
.prose blockquote{
  margin:28px 0;padding:18px 22px;
  background:var(--glass);border:1px solid var(--line);border-left:3px solid var(--glow);
  border-radius:0 14px 14px 0;backdrop-filter:blur(18px) saturate(140%);
  color:var(--text-2);font-size:15px;font-style:normal;
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{border-radius:14px;margin:26px auto;box-shadow:0 18px 48px -30px rgba(3,8,18,.95);}
.prose figure{margin:26px 0;}
.prose figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.prose table{width:100%;border-collapse:collapse;margin:28px 0;font-size:15px;font-variant-numeric:tabular-nums;}
.prose th,.prose td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top;}
.prose th{background:rgba(255,255,255,.05);color:var(--text-1);font-weight:600;white-space:nowrap;}
.prose tr:nth-child(even) td{background:rgba(255,255,255,.02);}
.prose code{
  padding:2px 7px;border-radius:6px;font-size:14px;
  background:rgba(148,190,255,.12);color:#BFE8FF;font-family:ui-monospace,Menlo,Consolas,monospace;
}
.prose pre{
  margin:26px 0;padding:18px 20px;border-radius:14px;overflow-x:auto;
  background:var(--surface-2);border:1px solid var(--line-soft);
}
.prose pre code{background:none;padding:0;color:var(--prose);}
.prose hr{border:0;border-top:1px solid var(--line-soft);margin:40px 0;}

.empty-state{
  padding:56px 28px;text-align:center;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
}
.empty-state h2{font-size:22px;margin-bottom:12px;}
.empty-state p{color:var(--text-2);margin-bottom:24px;}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;max-height:calc(100vh - 120px);overflow-y:auto;padding-right:2px;}
.side-card{
  padding:22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.side-card h3{font-size:16px;margin-bottom:14px;}
.side-member h3{font-size:20px;margin:12px 0 14px;}
.tick-list{list-style:none;display:flex;flex-direction:column;gap:10px;margin-bottom:20px;}
.tick-list li{position:relative;padding-left:24px;font-size:14px;color:var(--text-2);line-height:1.7;}
.tick-list li::before{
  content:"";position:absolute;left:0;top:6px;width:14px;height:14px;border-radius:50%;
  border:1.5px solid rgba(46,230,201,.65);
}
.tick-list li::after{
  content:"";position:absolute;left:4.5px;top:9.5px;width:5px;height:5px;border-radius:50%;
  background:var(--glow);
}
.toc-list{list-style:none;display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;padding:7px 12px;border-radius:10px;font-size:14px;
  color:var(--text-2);text-decoration:none;border-left:2px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.toc-list a:hover{color:var(--text-1);background:rgba(255,255,255,.05);border-left-color:var(--glow);}
.side-links{list-style:none;display:flex;flex-direction:column;}
.side-links li+li{border-top:1px solid var(--line-soft);}
.side-links a{display:block;padding:12px 0;text-decoration:none;transition:transform .2s var(--ease);}
.side-links a:hover{transform:translateX(3px);}
.side-links span{display:block;font-size:14px;color:var(--text-1);line-height:1.55;}
.side-links em{display:block;font-style:normal;font-size:12px;color:var(--text-3);margin-top:3px;}

/* ---------- 延伸阅读 ---------- */
.related{padding:72px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:clamp(22px,2.4vw,30px);}
.section-head p{font-size:14px;color:var(--text-3);margin-top:8px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.content-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  text-decoration:none;color:inherit;
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.content-card:hover{transform:translateY(-3px);border-color:rgba(46,230,201,.42);}
.card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.content-card:hover .card-thumb img{transform:scale(1.04);}
.card-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,0) 40%,rgba(6,10,18,.75) 100%);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.12);
}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17px;line-height:1.5;}
.card-body p{font-size:14px;color:var(--text-2);line-height:1.75;}
.card-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3);margin-top:auto;padding-top:6px;}

/* ---------- 延伸阅读条 ---------- */
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:44px;}
.post-nav a{
  display:block;padding:18px 20px;border-radius:14px;text-decoration:none;
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.post-nav a:hover{transform:translateY(-2px);border-color:rgba(46,230,201,.42);}
.post-nav em{display:block;font-style:normal;font-size:12px;color:var(--text-3);letter-spacing:.04em;margin-bottom:6px;}
.post-nav span{display:block;font-size:15px;color:var(--text-1);line-height:1.55;}

/* ---------- FAQ ---------- */
.faq-section{padding:72px 0 0;}
.faq-list{border-top:1px solid var(--line-soft);margin-top:8px;}
.faq-item{border-bottom:1px solid var(--line-soft);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 44px 20px 0;font-size:17px;color:var(--text-1);line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--glow);}
.faq-item summary::after{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-size:20px;color:var(--text-2);line-height:1;transition:transform .22s var(--ease),color .22s var(--ease);
}
.faq-item[open] summary::after{content:"−";color:var(--glow);}
.faq-item .faq-answer{padding:0 44px 22px 0;font-size:15px;color:var(--text-2);line-height:1.85;}

/* ---------- CTA 条带 ---------- */
.cta-band-mask{padding:72px 0 0;}
.cta-band{
  position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:34px 36px;border-radius:var(--r-card);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(46,230,201,0),rgba(46,230,201,.7),rgba(61,107,255,0));
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:8px;}
.cta-band p{font-size:14px;color:var(--text-2);}
.cta-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:96px;border-top:1px solid rgba(148,190,255,.14);background:rgba(11,18,32,.55);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:56px 0 40px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;margin-top:14px;max-width:320px;}
.footer-col h4{font-size:14px;color:var(--text-1);letter-spacing:.04em;margin-bottom:16px;}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:var(--text-2);line-height:1.7;}
.footer-col a{color:var(--text-2);text-decoration:none;transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--glow);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 0 32px;border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--text-3);
}

/* ---------- 移动底部条 ---------- */
.mobile-bar{display:none;}

@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:40px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-links,.nav-login{display:none;}
  .nav-toggle{display:block;margin-left:auto;}
  .nav-actions{margin-left:0;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .article-side{position:static;max-height:none;overflow:visible;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{padding-bottom:80px;}
  .container{padding:0 18px;}
  .nav{height:64px;gap:12px;}
  .brand-name{font-size:17px;}
  .btn{height:46px;padding:0 22px;font-size:15px;}
  .btn-sm{height:38px;padding:0 16px;font-size:13px;}
  .article-hero{padding:26px 0 32px;}
  .article-title{font-size:clamp(24px,6.4vw,32px);}
  .article-wrap{padding:36px 0 0;}
  .prose{font-size:16px;line-height:1.9;}
  .prose h2{font-size:22px;margin-top:40px;}
  .prose h3{font-size:18px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .post-nav{grid-template-columns:minmax(0,1fr);}
  .related,.faq-section{padding-top:52px;}
  .cta-band-mask{padding-top:52px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px 22px;}
  .cta-band .btn{width:100%;}
  .site-footer{margin-top:64px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;padding:40px 0 28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    height:calc(64px + env(safe-area-inset-bottom));
    padding:0 18px env(safe-area-inset-bottom);
    background:rgba(6,10,18,.9);
    backdrop-filter:blur(18px) saturate(140%);
    border-top:1px solid rgba(148,190,255,.18);
  }
  .mobile-bar span{font-size:13px;color:var(--text-2);line-height:1.4;}
}
@media (max-width:420px){
  .prose{font-size:15.5px;}
  .article-meta{font-size:12px;}
  .badge{font-size:11px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root {
      --bg: #060A12;
      --surface-1: #0B1220;
      --surface-2: #101A2B;
      --surface-3: #162238;
      --indigo: #3D6BFF;
      --glow: #2EE6C9;
      --glow-soft: rgba(46, 230, 201, 0.12);
      --amber: #FFB454;
      --text-1: #E9F0FA;
      --text-2: #A7B6CC;
      --text-3: #74849C;
      --link: #8FB6FF;
      --success: #35D07F;
      --danger: #FF6B6B;
      --border: rgba(148, 190, 255, 0.16);
      --border-strong: rgba(148, 190, 255, 0.28);
      --glass: rgba(255, 255, 255, 0.055);
      --glass-strong: rgba(255, 255, 255, 0.085);
      --radius-card: 18px;
      --radius-btn: 12px;
      --radius-pill: 999px;
      --shadow-card: 0 24px 60px -28px rgba(3, 8, 18, 0.9);
      --shadow-glow: 0 0 0 1px rgba(46, 230, 201, 0.35), 0 14px 44px -10px rgba(46, 230, 201, 0.45);
      --shadow-glow-hover: 0 0 0 1px rgba(46, 230, 201, 0.5), 0 18px 54px -10px rgba(46, 230, 201, 0.58);
      --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
      --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    }

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

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

    body {
      margin: 0;
      padding: 0 0 0;
      color: var(--text-1);
      background:
        radial-gradient(900px 500px at 82% -8%, rgba(61, 107, 255, 0.18), transparent 62%),
        radial-gradient(760px 460px at 4% 18%, rgba(46, 230, 201, 0.08), transparent 68%),
        var(--bg);
      font-family: var(--font);
      font-size: 16px;
      line-height: 1.85;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }

    img {
      display: block;
      max-width: 100%;
      height: auto;
    }

    a {
      color: var(--link);
      text-decoration: underline;
      text-underline-offset: 3px;
      transition: color 180ms var(--ease), text-decoration-thickness 180ms var(--ease);
    }

    a:hover {
      color: #B6D0FF;
      text-decoration-thickness: 2px;
    }

    button,
    input,
    textarea,
    select {
      font: inherit;
    }

    button {
      cursor: pointer;
    }

    h1,
    h2,
    h3,
    h4,
    p {
      margin-top: 0;
    }

    h1,
    h2,
    h3,
    h4 {
      line-height: 1.25;
      letter-spacing: -0.01em;
      font-weight: 650;
    }

    p {
      color: var(--text-2);
    }

    ::selection {
      background: rgba(46, 230, 201, 0.28);
      color: #FFFFFF;
    }

    :focus-visible {
      outline: 2px solid var(--glow);
      outline-offset: 2px;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 40px;
      padding-right: 40px;
    }

    .skip-link {
      position: absolute;
      left: -9999px;
      top: 12px;
      z-index: 999;
      padding: 10px 16px;
      border-radius: 10px;
      background: var(--glow);
      color: #04121A;
      font-weight: 700;
      text-decoration: none;
    }

    .skip-link:focus {
      left: 16px;
    }

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(6, 10, 18, 0.72);
      border-bottom: 1px solid transparent;
      backdrop-filter: blur(18px) saturate(140%);
      -webkit-backdrop-filter: blur(18px) saturate(140%);
      transition: background 220ms var(--ease), border-color 220ms var(--ease);
    }

    .site-header.is-scrolled {
      background: rgba(6, 10, 18, 0.9);
      border-bottom-color: rgba(148, 190, 255, 0.14);
    }

    .nav {
      display: flex;
      align-items: center;
      gap: 18px;
      height: 72px;
      min-width: 0;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      flex: 0 0 auto;
      color: var(--text-1);
      text-decoration: none;
    }

    .brand:hover {
      color: var(--text-1);
    }

    .brand-name {
      font-size: 20px;
      font-weight: 750;
      letter-spacing: 0.03em;
      line-height: 1;
    }

    .brand-sub {
      display: inline-flex;
      align-items: center;
      height: 21px;
      padding: 0 7px;
      border-radius: var(--radius-pill);
      border: 1px solid rgba(46, 230, 201, 0.34);
      background: rgba(46, 230, 201, 0.07);
      color: var(--glow);
      font-size: 11px;
      line-height: 1;
      letter-spacing: 0.08em;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 2px;
      margin-left: auto;
      min-width: 0;
    }

    .nav-links a {
      display: inline-flex;
      align-items: center;
      height: 38px;
      padding: 0 11px;
      border-radius: var(--radius-pill);
      color: var(--text-2);
      font-size: 14px;
      line-height: 1;
      text-decoration: none;
      white-space: nowrap;
      transition: color 180ms var(--ease), background 180ms var(--ease), box-shadow 180ms var(--ease);
    }

    .nav-links a:hover {
      color: var(--text-1);
      background: rgba(255, 255, 255, 0.06);
      text-decoration: none;
    }

    .nav-links a.active {
      color: var(--glow);
      background: rgba(46, 230, 201, 0.1);
      box-shadow: inset 0 0 0 1px rgba(46, 230, 201, 0.22);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex: 0 0 auto;
      margin-left: 6px;
    }

    .nav-login {
      color: var(--text-2);
      font-size: 14px;
      text-decoration: none;
      white-space: nowrap;
    }

    .nav-login:hover {
      color: var(--text-1);
    }

    .nav-toggle {
      display: none;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      flex: 0 0 auto;
      border-radius: 12px;
      border: 1px solid var(--border);
      background: var(--glass);
      color: var(--text-1);
      transition: background 180ms var(--ease), border-color 180ms var(--ease);
    }

    .nav-toggle:hover {
      background: var(--glass-strong);
      border-color: var(--border-strong);
    }

    .nav-toggle span,
    .nav-toggle span::before,
    .nav-toggle span::after {
      display: block;
      width: 18px;
      height: 1.5px;
      border-radius: 2px;
      background: currentColor;
      transition: transform 200ms var(--ease), opacity 200ms var(--ease);
    }

    .nav-toggle span {
      position: relative;
    }

    .nav-toggle span::before,
    .nav-toggle span::after {
      content: "";
      position: absolute;
      left: 0;
    }

    .nav-toggle span::before {
      top: -6px;
    }

    .nav-toggle span::after {
      top: 6px;
    }

    /* Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 48px;
      padding: 0 26px;
      border: 1px solid transparent;
      border-radius: var(--radius-btn);
      font-size: 15px;
      font-weight: 650;
      line-height: 1;
      letter-spacing: 0.01em;
      text-align: center;
      text-decoration: none;
      white-space: nowrap;
      transition: transform 200ms var(--ease), box-shadow 200ms var(--ease), background 200ms var(--ease), border-color 200ms var(--ease), color 200ms var(--ease);
    }

    .btn:hover {
      text-decoration: none;
    }

    .btn:active {
      transform: translateY(1px) scale(0.99);
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--glow), var(--indigo));
      color: #04121A;
      box-shadow: var(--shadow-glow);
    }

    .btn-primary:hover {
      color: #04121A;
      transform: translateY(-2px);
      box-shadow: var(--shadow-glow-hover);
    }

    .btn-primary:active {
      box-shadow: 0 0 0 1px rgba(46, 230, 201, 0.3), 0 8px 26px -10px rgba(46, 230, 201, 0.34);
    }

    .btn-secondary {
      background: rgba(255, 255, 255, 0.055);
      border-color: var(--border);
      color: var(--text-1);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
    }

    .btn-secondary:hover {
      color: var(--text-1);
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--border-strong);
      transform: translateY(-2px);
    }

    .btn-sm {
      min-height: 40px;
      padding: 0 18px;
      border-radius: var(--radius-pill);
      font-size: 14px;
    }

    .btn-block {
      width: 100%;
    }

    .btn[disabled],
    .btn.is-disabled {
      opacity: 0.45;
      cursor: not-allowed;
      transform: none;
      box-shadow: none;
    }

    /* Main */
    main {
      display: block;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      min-height: 26px;
      padding: 0 10px;
      border-radius: var(--radius-pill);
      border: 1px solid rgba(46, 230, 201, 0.24);
      background: rgba(46, 230, 201, 0.065);
      color: var(--glow);
      font-size: 12px;
      line-height: 1;
      letter-spacing: 0.06em;
      white-space: nowrap;
    }

    .eyebrow::before {
      content: "";
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: currentColor;
      box-shadow: 0 0 10px currentColor;
    }

    /* Hero */
    .page-hero {
      position: relative;
      overflow: hidden;
      padding: 54px 0 58px;
      background:
        linear-gradient(180deg, rgba(6, 10, 18, 0.78) 0%, rgba(6, 10, 18, 0.9) 58%, rgba(6, 10, 18, 0.97) 100%),
        url("/assets/images/backpic/back-1.webp") center / cover no-repeat;
    }

    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      background:
        radial-gradient(640px 320px at 78% 24%, rgba(46, 230, 201, 0.13), transparent 68%),
        radial-gradient(560px 360px at 15% 86%, rgba(61, 107, 255, 0.16), transparent 72%);
    }

    .page-hero::after {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      opacity: 0.08;
      background-image:
        linear-gradient(rgba(148, 190, 255, 0.55) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 190, 255, 0.55) 1px, transparent 1px);
      background-size: 54px 54px;
      mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95), transparent 88%);
      -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95), transparent 88%);
    }

    .page-hero .container {
      position: relative;
      z-index: 1;
    }

    .breadcrumbs {
      margin-bottom: 26px;
    }

    .breadcrumbs ol {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      margin: 0;
      padding: 0;
      list-style: none;
      color: var(--text-3);
      font-size: 13px;
    }

    .breadcrumbs li + li::before {
      content: "/";
      margin-right: 8px;
      color: rgba(167, 182, 204, 0.4);
    }

    .breadcrumbs a {
      color: var(--text-2);
      text-decoration: none;
    }

    .breadcrumbs a:hover {
      color: var(--glow);
    }

    .breadcrumbs [aria-current="page"] {
      color: var(--text-3);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.15fr) minmax(340px, 0.85fr);
      gap: 48px;
      align-items: center;
    }

    .hero-copy h1 {
      margin: 16px 0 20px;
      max-width: 14.5em;
      font-size: clamp(32px, 4.1vw, 50px);
      font-weight: 700;
      line-height: 1.22;
      letter-spacing: -0.015em;
    }

    .hero-sub {
      max-width: 40em;
      margin-bottom: 22px;
      color: var(--text-2);
      font-size: 17px;
      line-height: 1.9;
    }

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
      margin-bottom: 28px;
    }

    .hero-tags span {
      display: inline-flex;
      align-items: center;
      min-height: 30px;
      padding: 0 12px;
      border-radius: var(--radius-pill);
      border: 1px solid var(--border);
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-2);
      font-size: 12px;
      line-height: 1;
      letter-spacing: 0.04em;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .hero-panel {
      position: relative;
      overflow: hidden;
      border-radius: var(--radius-card);
      border: 1px solid rgba(148, 190, 255, 0.2);
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.04));
      box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(18px) saturate(140%);
      -webkit-backdrop-filter: blur(18px) saturate(140%);
    }

    .window-bar {
      display: flex;
      align-items: center;
      gap: 6px;
      min-height: 38px;
      padding: 0 16px;
      border-bottom: 1px solid rgba(148, 190, 255, 0.13);
      background: rgba(6, 10, 18, 0.3);
    }

    .window-bar span {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: rgba(167, 182, 204, 0.5);
    }

    .window-bar span:first-child {
      background: rgba(46, 230, 201, 0.8);
      box-shadow: 0 0 10px rgba(46, 230, 201, 0.6);
    }

    .window-bar em {
      margin-left: auto;
      color: var(--text-3);
      font-size: 11px;
      font-style: normal;
      letter-spacing: 0.08em;
    }

    .panel-body {
      padding: 20px 22px 22px;
    }

    .panel-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 16px;
    }

    .panel-head h2 {
      margin: 0;
      font-size: 18px;
      font-weight: 650;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      min-height: 24px;
      padding: 0 9px;
      border-radius: var(--radius-pill);
      font-size: 11px;
      line-height: 1;
      letter-spacing: 0.04em;
      white-space: nowrap;
    }

    .badge-glow {
      border: 1px solid rgba(46, 230, 201, 0.3);
      background: rgba(46, 230, 201, 0.09);
      color: var(--glow);
    }

    .badge-muted {
      border: 1px solid var(--border);
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-2);
    }

    .badge-amber {
      border: 1px solid rgba(255, 180, 84, 0.42);
      background: rgba(255, 180, 84, 0.08);
      color: var(--amber);
    }

    .check-list {
      display: grid;
      gap: 4px;
    }

    .check-row {
      display: grid;
      grid-template-columns: 30px minmax(0, 1fr) auto;
      gap: 11px;
      align-items: center;
      padding: 11px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    }

    .check-row:last-child {
      border-bottom: 0;
    }

    .check-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 30px;
      height: 30px;
      border-radius: 9px;
      border: 1px solid rgba(46, 230, 201, 0.24);
      background: rgba(46, 230, 201, 0.06);
      color: var(--glow);
      font-size: 11px;
      font-variant-numeric: tabular-nums;
      line-height: 1;
    }

    .check-row strong {
      display: block;
      color: var(--text-1);
      font-size: 14px;
      font-weight: 600;
      line-height: 1.45;
    }

    .check-row p {
      margin: 3px 0 0;
      color: var(--text-3);
      font-size: 12px;
      line-height: 1.55;
    }

    .state {
      display: inline-flex;
      align-items: center;
      min-height: 22px;
      padding: 0 8px;
      border-radius: var(--radius-pill);
      font-size: 10px;
      line-height: 1;
      letter-spacing: 0.05em;
      white-space: nowrap;
    }

    .state-wait {
      border: 1px solid rgba(255, 180, 84, 0.35);
      color: var(--amber);
      background: rgba(255, 180, 84, 0.06);
    }

    .state-ok {
      border: 1px solid rgba(46, 230, 201, 0.3);
      color: var(--glow);
      background: rgba(46, 230, 201, 0.06);
    }

    .panel-divider {
      height: 1px;
      margin: 14px 0;
      background: linear-gradient(90deg, rgba(148, 190, 255, 0.2), rgba(148, 190, 255, 0.02));
    }

    .panel-foot {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      color: var(--text-3);
      font-size: 12px;
    }

    .panel-foot a {
      color: var(--glow);
      text-decoration: none;
      white-space: nowrap;
    }

    .panel-foot a:hover {
      text-decoration: underline;
    }

    /* Category pills */
    .category-strip {
      padding: 20px 0;
      border-bottom: 1px solid rgba(148, 190, 255, 0.1);
      background: rgba(11, 18, 32, 0.42);
    }

    .pills {
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
    }

    .pill {
      display: inline-flex;
      align-items: center;
      min-height: 34px;
      padding: 0 14px;
      border-radius: var(--radius-pill);
      border: 1px solid var(--border);
      background: rgba(255, 255, 255, 0.035);
      color: var(--text-2);
      font-size: 13px;
      line-height: 1;
      text-decoration: none;
      transition: color 180ms var(--ease), background 180ms var(--ease), border-color 180ms var(--ease), transform 180ms var(--ease);
    }

    .pill:hover {
      color: var(--text-1);
      background: rgba(255, 255, 255, 0.065);
      border-color: var(--border-strong);
      text-decoration: none;
      transform: translateY(-1px);
    }

    .pill.active {
      color: var(--glow);
      background: rgba(46, 230, 201, 0.09);
      border-color: rgba(46, 230, 201, 0.32);
    }

    /* Sections */
    .section {
      position: relative;
      padding: 76px 0;
    }

    .section-tight {
      padding: 56px 0;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 36px;
      margin-bottom: 34px;
    }

    .section-head > div {
      min-width: 0;
    }

    .section-head h2 {
      margin: 12px 0 0;
      font-size: 30px;
      font-weight: 680;
      letter-spacing: -0.012em;
    }

    .section-head > p {
      max-width: 480px;
      margin: 0 0 3px;
      color: var(--text-2);
      font-size: 14px;
      line-height: 1.8;
    }

    /* Steps */
    .steps {
      position: relative;
      display: grid;
      gap: 20px;
    }

    .steps::before {
      content: "";
      position: absolute;
      left: 27px;
      top: 58px;
      bottom: 58px;
      width: 1px;
      background: linear-gradient(180deg, rgba(46, 230, 201, 0.5), rgba(61, 107, 255, 0.22) 55%, rgba(61, 107, 255, 0.04));
      pointer-events: none;
    }

    .step {
      position: relative;
      display: grid;
      grid-template-columns: 56px minmax(0, 1fr);
      gap: 22px;
      align-items: start;
    }

    .step-num {
      position: relative;
      z-index: 1;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 56px;
      height: 56px;
      border-radius: 16px;
      border: 1px solid rgba(46, 230, 201, 0.28);
      background: linear-gradient(180deg, rgba(46, 230, 201, 0.12), rgba(11, 18, 32, 0.92));
      color: var(--glow);
      font-size: 14px;
      font-weight: 650;
      font-variant-numeric: tabular-nums;
      line-height: 1;
      box-shadow: 0 12px 30px -18px rgba(46, 230, 201, 0.7);
    }

    .step-card {
      padding: 24px 26px;
      border-radius: var(--radius-card);
      border: 1px solid var(--border);
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.062), rgba(255, 255, 255, 0.028));
      box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.075);
      transition: transform 200ms var(--ease), border-color 200ms var(--ease), background 200ms var(--ease);
    }

    .step-card:hover {
      transform: translateY(-2px);
      border-color: rgba(148, 190, 255, 0.26);
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.078), rgba(255, 255, 255, 0.034));
    }

    .step-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      margin-bottom: 8px;
    }

    .step-top h3 {
      margin: 0;
      font-size: 18px;
      font-weight: 650;
    }

    .step-text {
      margin: 0;
      color: var(--text-2);
      font-size: 14px;
      line-height: 1.85;
    }

    .step-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 7px;
      margin-top: 14px;
    }

    .step-tags span {
      display: inline-flex;
      align-items: center;
      min-height: 25px;
      padding: 0 9px;
      border-radius: 7px;
      border: 1px solid rgba(148, 190, 255, 0.13);
      background: rgba(255, 255, 255, 0.035);
      color: var(--text-3);
      font-size: 11px;
      line-height: 1;
    }

    /* Quick entries */
    .quick-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 20px;
    }

    .quick-card {
      position: relative;
      overflow: hidden;
      border-radius: var(--radius-card);
      border: 1px solid var(--border);
      background: rgba(255, 255, 255, 0.045);
      box-shadow: var(--shadow-card);
      transition: transform 220ms var(--ease), border-color 220ms var(--ease), box-shadow 220ms var(--ease);
    }

    .quick-card:hover {
      transform: translateY(-3px);
      border-color: rgba(46, 230, 201, 0.3);
      box-shadow: 0 26px 64px -28px rgba(3, 8, 18, 0.95), 0 0 0 1px rgba(46, 230, 201, 0.12);
    }

    .quick-thumb {
      position: relative;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: var(--surface-2);
    }

    .quick-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 420ms var(--ease), filter 260ms var(--ease);
    }

    .quick-card:hover .quick-thumb img {
      transform: scale(1.035);
      filter: brightness(1.08);
    }

    .quick-thumb::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(6, 10, 18, 0.06) 0%, rgba(6, 10, 18, 0.12) 58%, rgba(6, 10, 18, 0.78) 100%);
      pointer-events: none;
    }

    .quick-body {
      padding: 20px 22px 22px;
    }

    .quick-body h3 {
      margin: 10px 0 8px;
      font-size: 18px;
      font-weight: 650;
    }

    .quick-body p {
      margin: 0 0 16px;
      color: var(--text-2);
      font-size: 13.5px;
      line-height: 1.8;
    }

    .quick-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--glow);
      font-size: 13px;
      font-weight: 600;
      text-decoration: none;
    }

    .quick-link::after {
      content: "→";
      transition: transform 180ms var(--ease);
    }

    .quick-link:hover {
      text-decoration: underline;
    }

    .quick-link:hover::after {
      transform: translateX(3px);
    }

    /* Preparation */
    .prep-panel {
      padding: 34px;
      border-radius: 24px;
      border: 1px solid var(--border);
      background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.022)),
        radial-gradient(520px 260px at 92% 0%, rgba(61, 107, 255, 0.16), transparent 70%);
      box-shadow: var(--shadow-card);
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
      margin-top: 26px;
    }

    .metric-card {
      padding: 22px;
      border-radius: 16px;
      border: 1px solid rgba(148, 190, 255, 0.12);
      background: rgba(255, 255, 255, 0.035);
    }

    .metric-num {
      display: inline-flex;
      align-items: baseline;
      gap: 4px;
      color: var(--text-1);
      font-size: 34px;
      font-weight: 680;
      line-height: 1;
      letter-spacing: -0.02em;
      font-variant-numeric: tabular-nums;
    }

    .metric-num small {
      color: var(--text-3);
      font-size: 12px;
      font-weight: 500;
      letter-spacing: 0.04em;
    }

    .metric-card h3 {
      margin: 12px 0 10px;
      font-size: 16px;
      font-weight: 620;
    }

    .metric-list {
      margin: 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 7px;
    }

    .metric-list li {
      position: relative;
      padding-left: 15px;
      color: var(--text-2);
      font-size: 13px;
      line-height: 1.65;
    }

    .metric-list li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 9px;
      width: 5px;
      height: 5px;
      border-radius: 2px;
      background: var(--glow);
      box-shadow: 0 0 8px rgba(46, 230, 201, 0.7);
    }

    /* FAQ */
    .faq-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.75fr);
      gap: 30px;
      align-items: start;
    }

    .faq-list {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .faq-item {
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .faq-item summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 19px 0;
      color: var(--text-1);
      font-size: 17px;
      font-weight: 620;
      line-height: 1.55;
      cursor: pointer;
      list-style: none;
      transition: color 180ms var(--ease);
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary:hover {
      color: var(--glow);
    }

    .faq-icon {
      position: relative;
      flex: 0 0 auto;
      width: 24px;
      height: 24px;
      border-radius: 8px;
      border: 1px solid rgba(148, 190, 255, 0.16);
      background: rgba(255, 255, 255, 0.035);
    }

    .faq-icon::before,
    .faq-icon::after {
      content: "";
      position: absolute;
      left: 50%;
      top: 50%;
      width: 10px;
      height: 1.5px;
      border-radius: 2px;
      background: var(--text-2);
      transform: translate(-50%, -50%);
      transition: transform 200ms var(--ease), background 200ms var(--ease);
    }

    .faq-icon::after {
      transform: translate(-50%, -50%) rotate(90deg);
    }

    .faq-item[open] .faq-icon {
      border-color: rgba(46, 230, 201, 0.3);
      background: rgba(46, 230, 201, 0.08);
    }

    .faq-item[open] .faq-icon::before,
    .faq-item[open] .faq-icon::after {
      background: var(--glow);
    }

    .faq-item[open] .faq-icon::after {
      transform: translate(-50%, -50%) rotate(0deg);
    }

    .faq-answer {
      padding: 0 42px 19px 0;
      color: var(--text-2);
      font-size: 14px;
      line-height: 1.85;
    }

    .faq-answer p {
      margin: 0;
      font-size: 14px;
      line-height: 1.85;
    }

    .side-card {
      position: sticky;
      top: 96px;
      padding: 24px;
      border-radius: var(--radius-card);
      border: 1px solid var(--border);
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.065), rgba(255, 255, 255, 0.025));
      box-shadow: var(--shadow-card);
    }

    .side-card h3 {
      margin: 10px 0 8px;
      font-size: 19px;
      font-weight: 650;
    }

    .side-card p {
      margin: 0 0 16px;
      color: var(--text-2);
      font-size: 13px;
      line-height: 1.8;
    }

    .side-list {
      margin: 0 0 18px;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 9px;
    }

    .side-list li {
      display: flex;
      align-items: flex-start;
      gap: 8px;
      color: var(--text-2);
      font-size: 13px;
      line-height: 1.65;
    }

    .side-list li::before {
      content: "";
      flex: 0 0 auto;
      width: 6px;
      height: 6px;
      margin-top: 7px;
      border-radius: 50%;
      border: 1.5px solid var(--glow);
      background: transparent;
    }

    /* CTA */
    .cta-band {
      padding: 20px 0 78px;
    }

    .cta-inner {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
      overflow: hidden;
      padding: 32px 36px;
      border-radius: 24px;
      border: 1px solid rgba(46, 230, 201, 0.2);
      background:
        linear-gradient(120deg, rgba(46, 230, 201, 0.08), rgba(61, 107, 255, 0.1) 58%, rgba(255, 255, 255, 0.035)),
        var(--surface-1);
      box-shadow: var(--shadow-card);
    }

    .cta-inner::before {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      top: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(46, 230, 201, 0.75), rgba(61, 107, 255, 0.55), transparent);
    }

    .cta-copy h2 {
      margin: 0 0 8px;
      font-size: 26px;
      font-weight: 680;
    }

    .cta-copy p {
      margin: 0 0 16px;
      color: var(--text-2);
      font-size: 14px;
      line-height: 1.8;
    }

    .cta-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 7px;
    }

    .cta-tags span {
      display: inline-flex;
      align-items: center;
      min-height: 25px;
      padding: 0 9px;
      border-radius: var(--radius-pill);
      border: 1px solid rgba(148, 190, 255, 0.14);
      background: rgba(255, 255, 255, 0.035);
      color: var(--text-3);
      font-size: 11px;
      line-height: 1;
      letter-spacing: 0.04em;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      flex: 0 0 auto;
    }

    /* Footer */
    .site-footer {
      border-top: 1px solid rgba(148, 190, 255, 0.12);
      background: rgba(5, 8, 16, 0.88);
      padding: 56px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(240px, 1.8fr) repeat(3, minmax(160px, 0.8fr));
      gap: 34px;
      align-items: start;
    }

    .footer-brand p {
      max-width: 340px;
      margin: 14px 0 0;
      color: var(--text-3);
      font-size: 13px;
      line-height: 1.8;
    }

    .footer-col h4 {
      margin: 0 0 12px;
      color: var(--text-1);
      font-size: 14px;
      font-weight: 620;
    }

    .footer-col ul {
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .footer-col li {
      color: var(--text-3);
      font-size: 13px;
      line-height: 2.05;
    }

    .footer-col a {
      color: var(--text-2);
      text-decoration: none;
    }

    .footer-col a:hover {
      color: var(--glow);
      text-decoration: underline;
      text-underline-offset: 3px;
    }

    .footer-bottom {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-top: 34px;
      padding-top: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.07);
      color: var(--text-3);
      font-size: 12px;
      line-height: 1.7;
    }

    /* Mobile drawer */
    .drawer-overlay {
      position: fixed;
      inset: 0;
      z-index: 200;
      background: rgba(0, 0, 0, 0.58);
      opacity: 0;
      pointer-events: none;
      transition: opacity 220ms var(--ease);
    }

    .drawer-overlay.is-open {
      opacity: 1;
      pointer-events: auto;
    }

    .mobile-drawer {
      position: fixed;
      top: 0;
      right: 0;
      z-index: 210;
      width: min(86vw, 360px);
      height: 100%;
      overflow-y: auto;
      padding: 22px 20px calc(28px + env(safe-area-inset-bottom));
      border-left: 1px solid rgba(148, 190, 255, 0.16);
      background:
        radial-gradient(420px 260px at 100% 0%, rgba(61, 107, 255, 0.2), transparent 70%),
        var(--surface-1);
      box-shadow: -24px 0 60px rgba(0, 0, 0, 0.45);
      transform: translateX(100%);
      transition: transform 260ms var(--ease);
      visibility: hidden;
    }

    .mobile-drawer.is-open {
      transform: translateX(0);
      visibility: visible;
    }

    .drawer-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding-bottom: 18px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .drawer-close {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      border-radius: 10px;
      border: 1px solid var(--border);
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-1);
      font-size: 22px;
      line-height: 1;
    }

    .drawer-close:hover {
      background: rgba(255, 255, 255, 0.08);
    }

    .drawer-nav {
      display: grid;
      margin: 12px 0 20px;
    }

    .drawer-nav a {
      display: flex;
      align-items: center;
      min-height: 48px;
      padding: 0 4px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.07);
      color: var(--text-2);
      font-size: 15px;
      text-decoration: none;
    }

    .drawer-nav a:hover,
    .drawer-nav a.active {
      color: var(--glow);
    }

    .drawer-actions {
      display: grid;
      gap: 10px;
    }

    .drawer-actions .btn {
      width: 100%;
    }

    body.no-scroll {
      overflow: hidden;
    }

    /* Mobile conversion bar */
    .mobile-bar {
      display: none;
      position: fixed;
      left: 0;
      right: 0;
      bottom: 0;
      z-index: 90;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      min-height: 64px;
      padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
      border-top: 1px solid rgba(148, 190, 255, 0.16);
      background: rgba(6, 10, 18, 0.93);
      backdrop-filter: blur(18px) saturate(140%);
      -webkit-backdrop-filter: blur(18px) saturate(140%);
    }

    .mobile-bar p {
      margin: 0;
      color: var(--text-2);
      font-size: 12px;
      line-height: 1.5;
    }

    .mobile-bar .btn {
      flex: 0 0 auto;
      min-height: 42px;
      padding: 0 18px;
      font-size: 13px;
    }

    /* Responsive */
    @media (max-width: 1180px) {
      .nav-links {
        display: none;
      }

      .nav-toggle {
        display: inline-flex;
      }

      .nav-actions {
        margin-left: auto;
      }
    }

    @media (max-width: 1024px) {
      .container {
        padding-left: 24px;
        padding-right: 24px;
      }

      .hero-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 32px;
      }

      .hero-panel {
        max-width: 620px;
      }

      .quick-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .quick-card:last-child {
        grid-column: span 2;
      }

      .metrics-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .metric-card:last-child {
        grid-column: span 2;
      }

      .faq-layout {
        grid-template-columns: minmax(0, 1fr);
      }

      .side-card {
        position: static;
      }

      .footer-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .section-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 14px;
      }

      .section-head > p {
        max-width: 640px;
      }
    }

    @media (max-width: 900px) {
      .nav-actions .nav-login {
        display: none;
      }
    }

    @media (max-width: 767px) {
      body {
        padding-bottom: 92px;
      }

      .container {
        padding-left: 18px;
        padding-right: 18px;
      }

      .nav {
        height: 64px;
        gap: 12px;
      }

      .brand-name {
        font-size: 18px;
      }

      .brand-sub {
        height: 20px;
        font-size: 10px;
      }

      .nav-actions {
        display: none;
      }

      .nav-toggle {
        margin-left: auto;
      }

      .page-hero {
        padding: 34px 0 42px;
      }

      .breadcrumbs {
        margin-bottom: 20px;
      }

      .hero-copy h1 {
        font-size: clamp(30px, 8vw, 36px);
        line-height: 1.28;
        margin-bottom: 16px;
      }

      .hero-sub {
        font-size: 15px;
        line-height: 1.85;
      }

      .hero-actions {
        display: grid;
        grid-template-columns: 1fr;
      }

      .hero-actions .btn {
        width: 100%;
      }

      .hero-panel {
        max-width: none;
      }

      .panel-body {
        padding: 18px;
      }

      .category-strip {
        padding: 16px 0;
      }

      .pills {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 4px;
        scrollbar-width: thin;
      }

      .pill {
        flex: 0 0 auto;
      }

      .section {
        padding: 54px 0;
      }

      .section-tight {
        padding: 42px 0;
      }

      .section-head h2 {
        font-size: 24px;
      }

      .steps::before {
        left: 22px;
        top: 50px;
        bottom: 50px;
      }

      .step {
        grid-template-columns: 44px minmax(0, 1fr);
        gap: 14px;
      }

      .step-num {
        width: 44px;
        height: 44px;
        border-radius: 13px;
        font-size: 12px;
      }

      .step-card {
        padding: 18px;
      }

      .step-top {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
      }

      .quick-grid {
        grid-template-columns: minmax(0, 1fr);
      }

      .quick-card:last-child {
        grid-column: auto;
      }

      .prep-panel {
        padding: 20px;
      }

      .metrics-grid {
        grid-template-columns: minmax(0, 1fr);
      }

      .metric-card:last-child {
        grid-column: auto;
      }

      .faq-item summary {
        font-size: 15px;
        padding: 17px 0;
      }

      .faq-answer {
        padding-right: 0;
      }

      .cta-band {
        padding: 12px 0 54px;
      }

      .cta-inner {
        align-items: flex-start;
        flex-direction: column;
        padding: 24px 20px;
      }

      .cta-copy h2 {
        font-size: 22px;
      }

      .cta-actions {
        width: 100%;
        display: grid;
        grid-template-columns: 1fr;
      }

      .cta-actions .btn {
        width: 100%;
      }

      .site-footer {
        padding-top: 42px;
      }

      .footer-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 24px;
      }

      .footer-bottom {
        align-items: flex-start;
        flex-direction: column;
      }

      .mobile-bar {
        display: flex;
      }
    }

    @media (max-width: 520px) {
      .hero-copy h1 {
        font-size: 29px;
      }

      .hero-tags span {
        min-height: 28px;
        padding: 0 10px;
        font-size: 11px;
      }

      .check-row {
        grid-template-columns: 30px minmax(0, 1fr);
      }

      .check-row .state {
        grid-column: 2;
        justify-self: start;
      }

      .panel-foot {
        align-items: flex-start;
        flex-direction: column;
        gap: 6px;
      }

      .metric-num {
        font-size: 30px;
      }

      .mobile-bar p {
        font-size: 11px;
      }

      .mobile-bar .btn {
        padding: 0 14px;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }

      *,
      *::before,
      *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
      }
    }

/* roulang page: category2 */
:root{
  --bg:#060A12;
  --surface-1:#0B1220;
  --surface-2:#101A2B;
  --indigo:#3D6BFF;
  --glow:#2EE6C9;
  --amber:#FFB454;
  --text-1:#E9F0FA;
  --text-2:#A7B6CC;
  --text-3:#74849C;
  --link:#8FB6FF;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.075);
  --stroke:rgba(148,190,255,.16);
  --stroke-soft:rgba(255,255,255,.08);
  --success:#35D07F;
  --error:#FF6B6B;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-card:0 24px 60px -28px rgba(3,8,18,.9);
  --glow-shadow:0 0 0 1px rgba(46,230,201,.35), 0 14px 44px -10px rgba(46,230,201,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --gutter:40px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:120px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  padding-bottom:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--link);text-decoration:underline;text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;font-weight:650}
p{margin:0}
:focus-visible{outline:2px solid var(--glow);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--gutter)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,10,18,.74);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--stroke-soft);
  transition:background .24s var(--ease);
}
.site-header.scrolled{background:rgba(6,10,18,.9)}
.nav{display:flex;align-items:center;gap:26px;height:72px}
.brand{display:inline-flex;align-items:baseline;gap:7px;text-decoration:none;color:var(--text-1);flex:0 0 auto}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.08em}
.brand-sub{font-size:12px;letter-spacing:.16em;color:var(--glow)}
.nav-links{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:center;flex-wrap:wrap}
.nav-links a{
  padding:8px 14px;border-radius:var(--radius-pill);font-size:14.5px;
  color:var(--text-2);text-decoration:none;white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.06)}
.nav-links a.active{
  color:var(--glow);background:rgba(46,230,201,.12);
  box-shadow:inset 0 0 0 1px rgba(46,230,201,.3);
}
.nav-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.nav-login{font-size:14.5px;color:var(--text-2);text-decoration:none;transition:color .2s var(--ease)}
.nav-login:hover{color:var(--text-1)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;flex:0 0 auto;
  background:var(--glass);border:1px solid var(--stroke);cursor:pointer;
  position:relative;transition:background .2s var(--ease);
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:11px;width:20px;height:2px;border-radius:2px;background:var(--text-1);
  content:"";transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle span{top:20px}
.nav-toggle span::before{top:-6px;left:0}
.nav-toggle span::after{top:6px;left:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;text-decoration:none;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(120deg,#2EE6C9 0%,#3D6BFF 100%);
  color:#04121A;border-radius:var(--radius-pill);box-shadow:var(--glow-shadow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(46,230,201,.5),0 20px 52px -10px rgba(46,230,201,.6)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(46,230,201,.3),0 10px 26px -12px rgba(46,230,201,.45)}
.btn-secondary{
  background:var(--glass);border-color:var(--stroke);color:var(--text-1);
  backdrop-filter:blur(18px) saturate(140%);
}
.btn-secondary:hover{transform:translateY(-2px);border-color:rgba(46,230,201,.45);background:rgba(46,230,201,.09)}
.btn-secondary:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0}
.section-lg{padding:96px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:30px;margin-bottom:14px}
.section-head p{color:var(--text-2);font-size:16px;max-width:680px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.14em;color:var(--glow);
  padding:5px 14px;border-radius:var(--radius-pill);
  background:rgba(46,230,201,.09);border:1px solid rgba(46,230,201,.26);
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--glow);box-shadow:0 0 8px rgba(46,230,201,.9)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--stroke-soft);padding:80px 0 76px}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(180deg,rgba(6,10,18,.72) 0%,rgba(6,10,18,.92) 68%,#060A12 100%),url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  opacity:.9;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(148,190,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(148,190,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 72%);
  opacity:.55;
}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:start}
.hero h1{font-size:46px;line-height:1.22;margin-bottom:20px}
.hero h1 .accent{color:var(--glow);position:relative;white-space:nowrap}
.hero h1 .accent::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:3px;border-radius:3px;
  background:linear-gradient(90deg,rgba(46,230,201,.9),rgba(46,230,201,0));
  box-shadow:0 0 18px rgba(46,230,201,.55);
}
.hero-lead{font-size:17px;color:var(--text-2);max-width:620px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:22px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  font-size:12.5px;letter-spacing:.04em;color:var(--text-2);
  padding:6px 14px;border-radius:var(--radius-pill);
  background:var(--glass);border:1px solid var(--stroke);
}

/* Hero 面板 */
.hero-panel{
  border-radius:var(--radius-card);border:1px solid var(--stroke);
  background:rgba(11,18,32,.78);backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.panel-bar{
  display:flex;align-items:center;gap:8px;height:42px;padding:0 18px;
  border-bottom:1px solid var(--stroke-soft);
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.01));
}
.panel-bar i{width:6px;height:6px;border-radius:50%;background:rgba(148,190,255,.5);display:block}
.panel-bar i:nth-child(1){background:rgba(255,107,107,.7)}
.panel-bar i:nth-child(2){background:rgba(255,180,84,.7)}
.panel-bar i:nth-child(3){background:rgba(46,230,201,.8)}
.panel-bar span{margin-left:8px;font-size:12.5px;letter-spacing:.08em;color:var(--text-3)}
.panel-body{padding:8px 22px 20px}
.panel-row{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:15px 0;border-bottom:1px solid rgba(255,255,255,.07);
}
.panel-row:last-child{border-bottom:0}
.panel-row .pr-main{display:flex;flex-direction:column;gap:2px}
.panel-row .pr-name{font-size:15px;font-weight:600}
.panel-row .pr-desc{font-size:12.5px;color:var(--text-3);line-height:1.5}
.badge{
  display:inline-flex;align-items:center;gap:6px;flex:0 0 auto;
  font-size:12px;letter-spacing:.04em;padding:4px 12px;border-radius:var(--radius-pill);
  background:var(--glass);border:1px solid var(--stroke);color:var(--text-2);
}
.badge-glow{color:var(--glow);border-color:rgba(46,230,201,.4);background:rgba(46,230,201,.1)}
.badge-amber{color:var(--amber);border-color:rgba(255,180,84,.45);background:rgba(255,180,84,.09)}
.badge-muted{color:var(--text-3)}

/* 分类胶囊互链 */
.pill-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.pill-links a{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--radius-pill);
  font-size:13.5px;text-decoration:none;color:var(--text-2);
  background:var(--glass);border:1px solid var(--stroke);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.pill-links a:hover{color:var(--text-1);border-color:rgba(46,230,201,.4);background:rgba(46,230,201,.08);transform:translateY(-2px)}
.pill-links a.current{color:var(--glow);border-color:rgba(46,230,201,.45);background:rgba(46,230,201,.12)}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:72px;z-index:60;
  background:rgba(6,10,18,.88);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--stroke-soft);
}
.anchor-inner{display:flex;align-items:center;gap:12px;padding:14px 0;overflow-x:auto;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-inner .anchor-label{font-size:12.5px;letter-spacing:.1em;color:var(--text-3);flex:0 0 auto;margin-right:4px}
.anchor-inner a{
  flex:0 0 auto;padding:7px 16px;border-radius:var(--radius-pill);
  font-size:14px;text-decoration:none;color:var(--text-2);
  border:1px solid transparent;transition:all .2s var(--ease);
}
.anchor-inner a:hover{color:var(--text-1);background:rgba(255,255,255,.06)}
.anchor-inner a.is-current{color:var(--glow);background:rgba(46,230,201,.12);border-color:rgba(46,230,201,.32)}

/* ---------- 功能矩阵 ---------- */
.matrix-group{padding-top:8px;margin-bottom:8px}
.group-head{display:flex;align-items:flex-end;gap:18px;flex-wrap:wrap;margin-bottom:26px}
.group-head h2{font-size:26px}
.group-head .group-note{font-size:14px;color:var(--text-3);padding-bottom:5px}
.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.feature-card{
  position:relative;
  border-radius:var(--radius-card);border:1px solid var(--stroke);
  background:var(--glass);backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  padding:26px 24px 22px;
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
  overflow:hidden;
}
.feature-card::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.16),rgba(255,255,255,0));
}
.feature-card:hover,.feature-card:focus-within{
  transform:translateY(-3px);
  border-color:rgba(46,230,201,.42);
  background:rgba(255,255,255,.075);
  box-shadow:0 24px 60px -28px rgba(3,8,18,.95),0 0 0 1px rgba(46,230,201,.22);
}
.fc-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid rgba(46,230,201,.4);color:var(--glow);
  background:rgba(46,230,201,.08);margin-bottom:16px;
}
.fc-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.feature-card h3{font-size:18px;margin-bottom:8px}
.feature-card .fc-desc{font-size:14.5px;color:var(--text-2);line-height:1.75;min-height:52px}
.fc-meta{display:flex;align-items:center;gap:10px;margin-top:16px;padding-top:14px;border-top:1px solid rgba(255,255,255,.07)}
.fc-more{
  max-height:0;opacity:0;overflow:hidden;
  font-size:13.5px;color:var(--text-3);line-height:1.7;
  transition:max-height .26s var(--ease),opacity .26s var(--ease),margin .26s var(--ease);
}
.feature-card:hover .fc-more,.feature-card:focus-within .fc-more{max-height:90px;opacity:1;margin-top:12px}

/* ---------- 提示带 ---------- */
.notice-band{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  margin-top:44px;padding:20px 26px;border-radius:var(--radius-card);
  border:1px solid rgba(46,230,201,.26);
  background:linear-gradient(90deg,rgba(46,230,201,.1),rgba(61,107,255,.06));
}
.notice-band .nb-icon{
  width:34px;height:34px;flex:0 0 auto;border-radius:10px;display:grid;place-items:center;
  border:1px solid rgba(46,230,201,.45);color:var(--glow);background:rgba(46,230,201,.1);
}
.notice-band p{flex:1 1 320px;font-size:14.5px;color:var(--text-2);margin:0}
.notice-band a{font-size:14px;font-weight:600;color:var(--glow);text-decoration:none;white-space:nowrap}
.notice-band a:hover{text-decoration:underline}

/* ---------- 组合卡 ---------- */
.combo-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.combo-card{
  border-radius:var(--radius-card);border:1px solid var(--stroke);
  background:var(--surface-1);box-shadow:var(--shadow-card);
  padding:26px 24px;display:flex;flex-direction:column;gap:14px;
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.combo-card:hover{transform:translateY(-3px);border-color:rgba(148,190,255,.35)}
.combo-card h3{font-size:19px}
.combo-card .combo-sub{font-size:13.5px;color:var(--text-3)}
.combo-list{display:flex;flex-direction:column;gap:10px;margin-top:2px}
.combo-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.7}
.combo-list li::before{
  content:"";flex:0 0 auto;width:7px;height:7px;margin-top:9px;border-radius:2px;
  background:var(--glow);box-shadow:0 0 10px rgba(46,230,201,.6);
}
.combo-card .combo-foot{margin-top:auto;padding-top:16px;border-top:1px solid rgba(255,255,255,.07);font-size:13.5px;color:var(--text-3)}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.stat{
  padding:24px 22px;border-radius:var(--radius-card);
  border:1px solid var(--stroke);background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
}
.stat .stat-num{font-size:32px;font-weight:700;color:var(--glow);font-variant-numeric:tabular-nums;line-height:1.2}
.stat .stat-label{font-size:14px;color:var(--text-2);margin-top:6px}
.stat .stat-note{font-size:12.5px;color:var(--text-3);margin-top:4px}

/* ---------- 图文区 ---------- */
.split{display:grid;grid-template-columns:.95fr 1.05fr;gap:48px;align-items:center}
.split-media{
  border-radius:14px;overflow:hidden;position:relative;
  border:1px solid rgba(255,255,255,.12);box-shadow:var(--shadow-card);
}
.split-media img{width:100%;height:340px;object-fit:cover}
.split-media::after{
  content:"";position:absolute;inset:auto 0 0 0;height:45%;
  background:linear-gradient(180deg,transparent,rgba(6,10,18,.72));
}
.split-copy h2{font-size:30px;margin-bottom:16px}
.split-copy p{color:var(--text-2);font-size:16px;margin-bottom:18px}
.check-list{display:flex;flex-direction:column;gap:12px;margin:0 0 24px}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);line-height:1.7}
.check-list li::before{
  content:"";flex:0 0 auto;width:18px;height:18px;margin-top:4px;border-radius:50%;
  border:1.5px solid rgba(46,230,201,.75);position:relative;
  background:radial-gradient(circle at center,rgba(46,230,201,.9) 0 3px,transparent 3px);
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:1.6fr .9fr;gap:40px;align-items:start}
.faq-item{
  border-bottom:1px solid rgba(255,255,255,.08);
  padding:0;
}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 2px;font-size:17px;font-weight:600;color:var(--text-1);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--glow)}
.faq-item summary::after{
  content:"";flex:0 0 auto;width:14px;height:14px;position:relative;
  background:
    linear-gradient(var(--glow),var(--glow)) center/14px 1.6px no-repeat,
    linear-gradient(var(--glow),var(--glow)) center/1.6px 14px no-repeat;
  transition:transform .24s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-body{padding:0 2px 22px;color:var(--text-2);font-size:15px;line-height:1.85}
.faq-aside{
  position:sticky;top:140px;
  border-radius:var(--radius-card);border:1px solid var(--stroke);
  background:var(--surface-1);box-shadow:var(--shadow-card);padding:26px 24px;
}
.faq-aside h3{font-size:17px;margin-bottom:6px}
.faq-aside .aside-level{font-size:13px;color:var(--amber);letter-spacing:.04em;margin-bottom:16px}
.faq-aside ul{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.faq-aside ul li{font-size:14px;color:var(--text-2);display:flex;gap:10px;line-height:1.65}
.faq-aside ul li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--glow)}
.faq-aside .btn{width:100%}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;
  border-radius:22px;border:1px solid var(--stroke);
  background:linear-gradient(120deg,rgba(46,230,201,.1),rgba(61,107,255,.12) 55%,rgba(11,18,32,.9));
  box-shadow:var(--shadow-card);
  padding:40px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(46,230,201,.8),rgba(61,107,255,.5),transparent);
}
.cta-band h2{font-size:26px;margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15px;margin-bottom:14px;max-width:640px}
.cta-band .cta-tags{display:flex;flex-wrap:wrap;gap:10px}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--stroke-soft);margin-top:96px;padding:56px 0 28px;background:var(--surface-1)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}
.footer-brand p{color:var(--text-3);font-size:14px;margin-top:16px;line-height:1.8;max-width:340px}
.footer-col h4{font-size:14px;letter-spacing:.08em;color:var(--text-1);margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul li{font-size:14px;color:var(--text-3);line-height:1.7}
.footer-col ul li a{color:var(--text-2);text-decoration:none;font-size:14px;transition:color .2s var(--ease)}
.footer-col ul li a:hover{color:var(--glow)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--stroke-soft);
  font-size:13px;color:var(--text-3);
}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,12,.72);backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:95;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:100;
  background:rgba(9,15,26,.98);border-left:1px solid var(--stroke);
  transform:translateX(102%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:20px 20px 32px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--stroke);
  background:var(--glass);color:var(--text-1);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;padding:0 4px;
  color:var(--text-2);text-decoration:none;font-size:15.5px;
  border-bottom:1px solid rgba(255,255,255,.07);
}
.drawer-nav a.active{color:var(--glow)}
.drawer .btn{margin-top:24px;width:100%}

/* ---------- 移动底部条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  height:calc(64px + env(safe-area-inset-bottom));
  padding:0 18px env(safe-area-inset-bottom);
  align-items:center;justify-content:space-between;gap:14px;
  background:rgba(6,10,18,.92);backdrop-filter:blur(18px) saturate(140%);
  border-top:1px solid var(--stroke);
}
.mobile-bar span{font-size:13.5px;color:var(--text-2)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 32px}
  .hero-grid{gap:40px}
  .hero h1{font-size:42px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav{gap:16px;justify-content:space-between}
  .nav-actions .nav-login{display:none}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:36px}
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .combo-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr;gap:32px}
  .split-media img{height:280px}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .anchor-bar{top:72px}
}
@media (max-width:767px){
  :root{--gutter:18px}
  body{padding-bottom:80px}
  .section{padding:56px 0}
  .section-lg{padding:64px 0}
  .hero{padding:56px 0 52px}
  .hero h1{font-size:31px;line-height:1.3}
  .hero-lead{font-size:16px}
  .hero-actions .btn{width:100%}
  .icon-btn{display:none}
  .feature-grid{grid-template-columns:1fr;gap:18px}
  .feature-card .fc-more{max-height:90px;opacity:1;margin-top:12px}
  .feature-card .fc-desc{min-height:0}
  .stats{grid-template-columns:1fr 1fr;gap:14px}
  .stat .stat-num{font-size:26px}
  .section-head h2,.split-copy h2{font-size:24px}
  .cta-band{padding:28px 22px;flex-direction:column;align-items:flex-start}
  .cta-band .cta-actions{width:100%}
  .cta-band .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .mobile-bar{display:flex}
  .notice-band{padding:18px}
  .anchor-bar{top:72px}
  .anchor-inner{padding:12px 0}
  .faq-item summary{font-size:16px}
}
@media (max-width:420px){
  .hero h1{font-size:27px}
  .brand-name{font-size:17px}
  .stat .stat-num{font-size:24px}
  .pill-links a{font-size:12.5px;padding:7px 12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --bg:#060A12;
  --surface-1:#0B1220;
  --surface-2:#101A2B;
  --indigo:#3D6BFF;
  --glow:#2EE6C9;
  --amber:#FFB454;
  --text-1:#E9F0FA;
  --text-2:#A7B6CC;
  --text-3:#74849C;
  --link:#8FB6FF;
  --line:rgba(148,190,255,.16);
  --line-soft:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.085);
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-card:0 24px 60px -28px rgba(3,8,18,.9);
  --glow-ring:0 0 0 1px rgba(46,230,201,.35),0 14px 44px -10px rgba(46,230,201,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(760px 420px at 78% -8%,rgba(61,107,255,.16),transparent 68%),
    radial-gradient(560px 380px at 8% 4%,rgba(46,230,201,.10),transparent 70%);
}
img{max-width:100%;display:block;border-radius:var(--radius-md);}
a{color:var(--link);text-decoration:underline;text-underline-offset:3px;}
a:hover{text-decoration-thickness:2px;}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.25;letter-spacing:-.01em;color:var(--text-1);}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--glow);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;position:relative;z-index:1;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:30px;margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:15px;margin:0;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.04em;color:var(--glow);text-transform:none;margin-bottom:14px;}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--glow);opacity:.7;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-sm);
  font-weight:600;font-size:15px;text-decoration:none;line-height:1;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  border:1px solid transparent;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(100deg,var(--glow),var(--indigo));
  color:#04121A;border-radius:999px;
  box-shadow:0 0 0 1px rgba(46,230,201,.28),0 12px 34px -14px rgba(46,230,201,.55);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(46,230,201,.5),0 18px 46px -12px rgba(46,230,201,.7);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(46,230,201,.3),0 8px 22px -14px rgba(46,230,201,.5);}
.btn-ghost{
  background:var(--glass);color:var(--text-1);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(46,230,201,.45);background:var(--glass-strong);}
.btn-link{color:var(--text-1);text-decoration:none;padding:0 4px;height:40px;}
.btn-link .arrow{color:var(--glow);transition:transform .2s var(--ease);}
.btn-link:hover .arrow{transform:translateX(4px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ===== 徽标 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 11px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;line-height:1.7;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);
}
.badge-glow{color:var(--glow);border-color:rgba(46,230,201,.38);background:rgba(46,230,201,.08);}
.badge-amber{color:var(--amber);border-color:rgba(255,180,84,.45);background:rgba(255,180,84,.08);}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,10,18,.62);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(148,190,255,.10);
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(6,10,18,.9);border-bottom-color:rgba(148,190,255,.2);}
.nav{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:baseline;gap:7px;text-decoration:none;flex-shrink:0;}
.brand-name{
  font-size:21px;font-weight:700;letter-spacing:.06em;color:var(--text-1);
  font-family:Inter,system-ui,"PingFang SC",sans-serif;
}
.brand-sub{
  font-size:12px;letter-spacing:.16em;color:var(--glow);
  border:1px solid rgba(46,230,201,.4);border-radius:999px;padding:1px 8px;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap;}
.nav-links a{
  display:inline-flex;align-items:center;height:38px;padding:0 13px;border-radius:999px;
  font-size:14px;color:var(--text-2);text-decoration:none;white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-links a.active{color:var(--glow);background:rgba(46,230,201,.10);box-shadow:inset 0 0 0 1px rgba(46,230,201,.22);}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:8px;}
.nav-login{font-size:14px;color:var(--text-2);text-decoration:none;}
.nav-login:hover{color:var(--text-1);}
.nav-toggle{
  display:none;width:42px;height:42px;margin-left:auto;border-radius:12px;
  border:1px solid var(--line);background:var(--glass);position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:1.6px;background:var(--text-1);border-radius:2px;content:"";
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span{top:50%;margin-top:-.8px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateX(-50%) rotate(45deg);top:0;}
.nav-toggle[aria-expanded="true"] span::after{transform:translateX(-50%) rotate(-45deg);top:0;}

/* ===== 抽屉 ===== */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:120;
  background:rgba(11,18,32,.97);
  backdrop-filter:blur(22px) saturate(140%);
  border-left:1px solid var(--line);
  transform:translateX(102%);
  transition:transform .28s var(--ease);
  padding:24px 22px calc(24px + env(safe-area-inset-bottom));
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--glass);font-size:18px;line-height:1;color:var(--text-2);}
.drawer-close:hover{color:var(--text-1);}
.drawer nav{display:flex;flex-direction:column;gap:2px;margin-bottom:22px;}
.drawer nav a{
  display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:12px;
  color:var(--text-2);text-decoration:none;font-size:15px;border-left:2px solid transparent;
}
.drawer nav a:hover{background:rgba(255,255,255,.05);color:var(--text-1);}
.drawer nav a.active{color:var(--glow);background:rgba(46,230,201,.08);border-left-color:var(--glow);}
.drawer .btn{width:100%;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,7,14,.7);z-index:110;
  opacity:0;pointer-events:none;transition:opacity .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* ===== 分类页 Hero ===== */
.page-hero{
  position:relative;overflow:hidden;
  padding:56px 0 72px;
  border-bottom:1px solid rgba(148,190,255,.10);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.5;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(6,10,18,.72) 0%,rgba(6,10,18,.88) 55%,var(--bg) 100%),
    linear-gradient(90deg,var(--bg) 0%,rgba(6,10,18,.55) 55%,rgba(6,10,18,.35) 100%);
}
.page-hero .container{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li:not(:last-child)::after{content:"/";color:rgba(148,190,255,.35);}
.crumb a{color:var(--text-2);text-decoration:none;}
.crumb a:hover{color:var(--glow);}
.crumb li[aria-current] span{color:var(--text-3);}
.page-hero h1{font-size:46px;max-width:840px;margin-bottom:20px;}
.page-hero h1 em{font-style:normal;color:var(--glow);}
.hero-lede{max-width:760px;color:var(--text-2);font-size:16px;line-height:1.9;margin-bottom:26px;}
.hero-metrics{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.metric{
  flex:1 1 180px;min-width:160px;
  padding:16px 18px;border-radius:var(--radius-md);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
}
.metric b{display:block;font-size:22px;font-weight:600;color:var(--text-1);font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
.metric span{font-size:13px;color:var(--text-3);}
.cat-pills{display:flex;flex-wrap:wrap;gap:10px;}
.cat-pills a{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  font-size:13px;text-decoration:none;color:var(--text-2);
  background:var(--glass);border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.cat-pills a:hover{color:var(--text-1);border-color:rgba(46,230,201,.45);transform:translateY(-2px);}
.cat-pills a.is-current{color:#04121A;background:linear-gradient(100deg,var(--glow),var(--indigo));border-color:transparent;font-weight:600;}

/* ===== 等级徽标卡 ===== */
.tier-row{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}
.tier-card{
  position:relative;padding:26px 22px;border-radius:var(--radius-lg);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  display:flex;flex-direction:column;gap:10px;
}
.tier-card:hover{transform:translateY(-3px);border-color:rgba(46,230,201,.4);}
.tier-card.is-featured{border-color:rgba(46,230,201,.55);box-shadow:var(--glow-ring),var(--shadow-card);}
.tier-index{font-size:12px;letter-spacing:.1em;color:var(--text-3);font-variant-numeric:tabular-nums;}
.tier-card h3{font-size:20px;}
.tier-card .tier-desc{font-size:13px;color:var(--text-2);line-height:1.7;margin:0;min-height:44px;}
.tier-price{font-size:26px;font-weight:600;letter-spacing:-.02em;font-variant-numeric:tabular-nums;margin-top:2px;}
.tier-price small{font-size:13px;font-weight:400;color:var(--text-3);margin-left:4px;letter-spacing:0;}
.tier-card ul{display:flex;flex-direction:column;gap:7px;font-size:13px;color:var(--text-2);margin-top:4px;}
.tier-card ul li{display:flex;gap:8px;align-items:flex-start;}
.tier-card ul li::before{content:"";flex-shrink:0;width:6px;height:6px;margin-top:9px;border-radius:2px;background:var(--glow);opacity:.85;}
.tier-card .tier-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line-soft);}
.tier-card .tier-foot a{font-size:13px;color:var(--link);}
.tier-flag{position:absolute;top:-11px;right:18px;}

/* ===== 对比表 ===== */
.cmp-wrap{
  border-radius:16px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  overflow:hidden;box-shadow:var(--shadow-card);
}
.cmp-table{width:100%;border-collapse:collapse;font-size:14px;}
.cmp-table caption{
  caption-side:top;text-align:left;padding:20px 24px;
  font-size:13px;color:var(--text-3);border-bottom:1px solid var(--line-soft);
}
.cmp-table thead th{
  position:sticky;top:72px;z-index:3;
  background:rgba(11,18,32,.94);backdrop-filter:blur(12px);
  padding:18px 20px;text-align:left;font-weight:600;font-size:14px;
  border-bottom:1px solid var(--line);
  color:var(--text-1);
}
.cmp-table thead th:first-child{width:40%;color:var(--text-3);font-weight:500;}
.cmp-table thead th .th-inner{display:flex;flex-direction:column;gap:3px;}
.cmp-table thead th .th-inner small{font-size:12px;font-weight:400;color:var(--text-3);letter-spacing:0;}
.cmp-table thead th.is-reco{color:var(--glow);box-shadow:inset 1px 0 0 rgba(46,230,201,.4),inset -1px 0 0 rgba(46,230,201,.4);}
.cmp-table tbody td{
  padding:16px 20px;border-bottom:1px solid var(--line-soft);color:var(--text-2);vertical-align:top;
}
.cmp-table tbody tr:nth-child(even) td{background:rgba(255,255,255,.02);}
.cmp-table tbody tr:last-child td{border-bottom:0;}
.cmp-table tbody td:first-child{color:var(--text-1);font-weight:500;}
.cmp-table tbody td:first-child small{display:block;font-size:12px;font-weight:400;color:var(--text-3);margin-top:2px;}
.cmp-table td.is-reco{color:var(--text-1);box-shadow:inset 1px 0 0 rgba(46,230,201,.28),inset -1px 0 0 rgba(46,230,201,.28);}
.cmp-table td.is-reco strong{color:var(--glow);font-weight:600;font-variant-numeric:tabular-nums;}
.tick{display:inline-flex;align-items:center;gap:7px;color:var(--text-1);font-variant-numeric:tabular-nums;}
.tick::before{
  content:"";width:15px;height:15px;border-radius:50%;
  border:1.5px solid var(--glow);flex-shrink:0;position:relative;
}
.tick::after{content:"";}
.tick.has-mark::before{
  background:radial-gradient(circle at center,var(--glow) 0 3px,transparent 4px);
}
.none{color:var(--text-3);}
.cmp-foot{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;padding:22px 24px;border-top:1px solid var(--line-soft);background:rgba(255,255,255,.02);}
.cmp-foot p{margin:0;font-size:13px;color:var(--text-3);}
.cmp-tabs{display:none;gap:8px;margin-bottom:16px;}
.cmp-tabs button{
  flex:1;height:44px;border-radius:var(--radius-sm);font-size:14px;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.cmp-tabs button[aria-selected="true"]{color:#04121A;background:linear-gradient(100deg,var(--glow),var(--indigo));border-color:transparent;font-weight:600;}
.cmp-panels{display:none;flex-direction:column;gap:10px;}
.cmp-panel{display:none;border-radius:var(--radius-md);border:1px solid var(--line);background:var(--glass);overflow:hidden;}
.cmp-panel.is-active{display:block;}
.cmp-panel .row{display:flex;justify-content:space-between;gap:16px;padding:14px 16px;border-bottom:1px solid var(--line-soft);font-size:14px;}
.cmp-panel .row:last-child{border-bottom:0;}
.cmp-panel .row span:first-child{color:var(--text-1);}
.cmp-panel .row span:last-child{color:var(--text-2);text-align:right;font-variant-numeric:tabular-nums;}

/* ===== 权益长条 ===== */
.strip-list{display:flex;flex-direction:column;gap:16px;}
.strip{
  display:grid;grid-template-columns:56px 1fr auto;gap:20px;align-items:center;
  padding:24px 26px;border-radius:var(--radius-lg);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.strip:hover{transform:translateY(-2px);border-color:rgba(46,230,201,.4);}
.strip-no{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid rgba(46,230,201,.4);color:var(--glow);
  font-size:14px;font-weight:600;font-variant-numeric:tabular-nums;
}
.strip h3{font-size:18px;margin-bottom:6px;}
.strip p{margin:0;color:var(--text-2);font-size:14px;line-height:1.8;max-width:720px;}
.strip-side{display:flex;flex-direction:column;align-items:flex-end;gap:8px;}

/* ===== 适用场景 ===== */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.scene-card{
  padding:0;border-radius:var(--radius-lg);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.scene-card:hover{transform:translateY(-3px);border-color:rgba(46,230,201,.4);}
.scene-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:0;}
.scene-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;opacity:.85;transition:transform .5s var(--ease);}
.scene-card:hover .thumb img{transform:scale(1.03);}
.scene-card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 35%,rgba(6,10,18,.85) 100%);}
.scene-card .body{padding:20px 22px 24px;}
.scene-card .body .badge{margin-bottom:10px;}
.scene-card h3{font-size:18px;margin-bottom:8px;}
.scene-card p{margin:0;font-size:14px;color:var(--text-2);line-height:1.8;}

/* ===== FAQ ===== */
.faq-layout{display:grid;grid-template-columns:1.55fr .9fr;gap:40px;align-items:start;}
.faq-list{border-top:1px solid var(--line-soft);}
.faq-item{border-bottom:1px solid var(--line-soft);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--text-1);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--glow);}
.faq-icon{position:relative;flex-shrink:0;width:16px;height:16px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--text-2);border-radius:2px;
  transition:transform .22s var(--ease),opacity .22s var(--ease),background .22s var(--ease);
}
.faq-icon::before{left:0;top:7px;width:16px;height:1.6px;}
.faq-icon::after{left:7px;top:0;width:1.6px;height:16px;}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-item.is-open .faq-icon::before{background:var(--glow);}
.faq-item.is-open .faq-q{color:var(--glow);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a p{margin:0;padding:0 4px 20px;color:var(--text-2);font-size:14px;line-height:1.9;}
.faq-aside{
  position:sticky;top:96px;padding:26px;border-radius:var(--radius-lg);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);box-shadow:var(--shadow-card);
}
.faq-aside h3{font-size:17px;margin-bottom:6px;}
.faq-aside .aside-sub{font-size:13px;color:var(--text-3);margin-bottom:16px;}
.faq-aside ul{display:flex;flex-direction:column;gap:9px;font-size:14px;color:var(--text-2);margin-bottom:20px;}
.faq-aside ul li{display:flex;gap:9px;}
.faq-aside ul li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--glow);flex-shrink:0;margin-top:9px;}
.faq-aside .btn{width:100%;}

/* ===== CTA ===== */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:20px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(18px) saturate(140%);
  padding:40px 44px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--glow),transparent);
  opacity:.75;
}
.cta-band h2{font-size:26px;margin-bottom:8px;}
.cta-band p{margin:0;color:var(--text-2);font-size:14px;}
.cta-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:96px;border-top:1px solid rgba(148,190,255,.12);
  background:rgba(6,10,18,.72);
  padding:56px 0 28px;position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{color:var(--text-3);font-size:13px;line-height:1.9;max-width:300px;margin:0;}
.footer-col h4{font-size:13px;letter-spacing:.06em;color:var(--text-2);margin-bottom:14px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col li{font-size:13px;color:var(--text-3);text-decoration:none;transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--glow);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.07);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:var(--text-3);
}

/* ===== 移动底栏 ===== */
.mobile-bar{display:none;}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  .page-hero h1{font-size:40px;}
  .tier-row{grid-template-columns:repeat(4,1fr);gap:18px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-links{display:none;}
  .nav-actions{display:none;}
  .nav-toggle{display:block;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .page-hero{padding:40px 0 56px;}
  .page-hero h1{font-size:34px;}
  .tier-row{grid-template-columns:repeat(2,1fr);}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;}
  .faq-aside{position:static;}
  .cmp-table thead th{top:72px;}
}
@media (max-width:767px){
  body{padding-bottom:80px;}
  .container{padding:0 18px;}
  .page-hero h1{font-size:30px;line-height:1.3;}
  .hero-lede{font-size:15px;}
  .hero-metrics{gap:10px;}
  .metric{flex:1 1 46%;padding:14px;}
  .metric b{font-size:19px;}
  .tier-row{grid-template-columns:1fr;}
  .cmp-table{display:none;}
  .cmp-tabs{display:flex;}
  .cmp-panels{display:flex;}
  .strip{grid-template-columns:44px 1fr;padding:20px;}
  .strip-side{grid-column:1 / -1;flex-direction:row;align-items:center;justify-content:flex-start;gap:10px;}
  .scene-grid{grid-template-columns:1fr;}
  .cta-band{padding:28px 22px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .footer-brand{grid-column:1 / -1;}
  .faq-q{font-size:16px;}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:90;
    height:calc(64px + env(safe-area-inset-bottom));
    padding:0 16px calc(env(safe-area-inset-bottom));
    align-items:center;gap:12px;
    background:rgba(11,18,32,.92);
    backdrop-filter:blur(18px) saturate(140%);
    border-top:1px solid var(--line);
  }
  .mobile-bar p{margin:0;font-size:13px;color:var(--text-2);flex:1;line-height:1.4;}
  .mobile-bar .btn{height:42px;padding:0 20px;font-size:14px;}
}
@media (max-width:420px){
  .page-hero h1{font-size:26px;}
  .brand-name{font-size:19px;}
  .footer-grid{grid-template-columns:1fr;}
  .strip-no{width:38px;height:38px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category4 */
:root{
  --bg:#060A12;
  --surface-1:#0B1220;
  --surface-2:#101A2B;
  --indigo:#3D6BFF;
  --glow:#2EE6C9;
  --amber:#FFB454;
  --text-1:#E9F0FA;
  --text-2:#A7B6CC;
  --text-3:#74849C;
  --link:#8FB6FF;
  --success:#35D07F;
  --danger:#FF6B6B;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --border:rgba(148,190,255,.16);
  --border-soft:rgba(255,255,255,.08);
  --radius-xl:22px;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-card:0 24px 60px -28px rgba(3,8,18,.9);
  --glow-shadow:0 0 0 1px rgba(46,230,201,.35),0 14px 44px -10px rgba(46,230,201,.45);
  --maxw:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:
    radial-gradient(1100px 620px at 12% -8%,rgba(61,107,255,.16),transparent 62%),
    radial-gradient(900px 540px at 92% 0%,rgba(46,230,201,.10),transparent 58%),
    var(--bg);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--link);text-decoration:underline;text-underline-offset:3px;transition:color .2s var(--ease);}
a:hover{color:#B9CFFF;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:1.15em;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--glow);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(46,230,201,.28);color:#fff;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 40px;}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{
  background:linear-gradient(100deg,var(--glow),#3D6BFF 92%);
  color:#04121A;
  box-shadow:var(--glow-shadow);
}
.btn-primary:hover{color:#04121A;box-shadow:0 0 0 1px rgba(46,230,201,.55),0 18px 52px -8px rgba(46,230,201,.55);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(46,230,201,.3),0 8px 22px -12px rgba(46,230,201,.4);}
.btn-secondary{
  background:var(--glass);color:var(--text-1);border-color:var(--border);
  backdrop-filter:blur(16px) saturate(140%);
}
.btn-secondary:hover{border-color:rgba(46,230,201,.5);color:var(--text-1);transform:translateY(-2px);}
.btn-secondary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--text-1);padding:0 8px;height:40px;border:none;text-decoration:none;}
.btn-ghost:hover{color:var(--glow);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 徽标 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--glass);border:1px solid var(--border);
  color:var(--text-2);font-size:12px;letter-spacing:.04em;line-height:1.6;
}
.badge-amber{border-color:rgba(255,180,84,.45);color:var(--amber);background:rgba(255,180,84,.08);}
.badge-glow{border-color:rgba(46,230,201,.42);color:var(--glow);background:rgba(46,230,201,.08);}
.badge-muted{color:var(--text-3);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,18,.62);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--border-soft);
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(6,10,18,.9);border-bottom-color:var(--border);}
.nav{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:baseline;gap:7px;text-decoration:none;flex:none;}
.brand-name{
  font-size:19px;font-weight:700;letter-spacing:.06em;color:var(--text-1);
  font-family:"Inter",system-ui,sans-serif;
}
.brand-sub{
  font-size:12px;letter-spacing:.16em;color:var(--glow);
  padding:2px 7px;border:1px solid rgba(46,230,201,.35);border-radius:999px;
}
.brand:hover .brand-name{color:#fff;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1;}
.nav-links a{
  display:inline-flex;align-items:center;height:36px;padding:0 13px;border-radius:999px;
  font-size:14px;color:var(--text-2);text-decoration:none;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.06);}
.nav-links a.active{color:var(--glow);background:rgba(46,230,201,.10);box-shadow:inset 0 0 0 1px rgba(46,230,201,.24);}
.nav-actions{display:flex;align-items:center;gap:14px;flex:none;}
.nav-login{font-size:14px;color:var(--text-2);text-decoration:none;}
.nav-login:hover{color:var(--text-1);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:var(--glass);border:1px solid var(--border);cursor:pointer;
  position:relative;flex:none;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--text-1);border-radius:2px;
  transform:translateX(-50%);transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;display:none;
}
.mobile-drawer.open{display:block;}
.drawer-mask{position:absolute;inset:0;background:rgba(3,7,14,.72);backdrop-filter:blur(6px);}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:linear-gradient(180deg,rgba(16,26,43,.98),rgba(6,10,18,.99));
  border-left:1px solid var(--border);
  padding:22px 22px calc(22px + env(safe-area-inset-bottom));
  display:flex;flex-direction:column;gap:18px;
  transform:translateX(100%);transition:transform .28s var(--ease);
  overflow-y:auto;
}
.mobile-drawer.open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;background:var(--glass);
  border:1px solid var(--border);color:var(--text-1);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-list{display:flex;flex-direction:column;gap:2px;}
.drawer-list a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:12px;
  color:var(--text-2);text-decoration:none;font-size:15px;
}
.drawer-list a:hover,.drawer-list a:active{background:rgba(255,255,255,.06);color:var(--text-1);}
.drawer-list a.active{color:var(--glow);background:rgba(46,230,201,.10);}
.drawer-cta{display:flex;flex-direction:column;gap:10px;margin-top:auto;}

/* ---------- 页面 Banner ---------- */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--border-soft);
  background-image:linear-gradient(180deg,rgba(6,10,18,.62),rgba(6,10,18,.94)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  padding:72px 0 60px;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(148,190,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(148,190,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(70% 70% at 50% 10%,#000,transparent 78%);
}
.page-hero .container{position:relative;z-index:1;}
.crumbs{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0 0 22px;font-size:13px;color:var(--text-3);}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li+li::before{content:"/";color:rgba(148,190,255,.35);}
.crumbs a{color:var(--text-2);text-decoration:none;}
.crumbs a:hover{color:var(--glow);}
.page-hero h1{
  font-size:clamp(30px,4vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.01em;
  max-width:19em;
}
.page-hero h1 em{font-style:normal;color:var(--glow);}
.hero-lead{max-width:56em;margin-top:18px;color:var(--text-2);font-size:16px;line-height:1.9;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.chip-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.chip-nav a{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  background:var(--glass);border:1px solid var(--border);color:var(--text-2);
  font-size:13px;text-decoration:none;transition:all .2s var(--ease);
}
.chip-nav a:hover{color:var(--text-1);border-color:rgba(46,230,201,.45);transform:translateY(-2px);}
.chip-nav a.active{color:var(--glow);background:rgba(46,230,201,.10);border-color:rgba(46,230,201,.4);}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0;}
.section-tight{padding:48px 0;}
.section-head{max-width:52em;margin-bottom:32px;}
.section-head h2{font-size:clamp(24px,2.6vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.01em;}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;
  color:var(--glow);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:rgba(46,230,201,.6);}

/* ---------- 搜索位 ---------- */
.search-bar{
  display:flex;align-items:center;gap:12px;
  padding:12px 14px;border-radius:var(--radius-md);
  background:rgba(255,255,255,.045);border:1px solid var(--border);
  box-shadow:var(--shadow-card);
}
.search-bar .search-icon{
  width:34px;height:34px;border-radius:10px;flex:none;display:grid;place-items:center;
  background:rgba(46,230,201,.10);border:1px solid rgba(46,230,201,.28);color:var(--glow);font-size:15px;
}
.search-bar input{
  flex:1;height:40px;border-radius:10px;border:1px solid transparent;background:transparent;
  color:var(--text-1);font-size:15px;padding:0 8px;
}
.search-bar input::placeholder{color:var(--text-3);}
.search-bar input:focus{outline:none;}
.search-bar:focus-within{border-color:rgba(46,230,201,.5);box-shadow:0 0 0 3px rgba(46,230,201,.14);}
.search-hint{font-size:12px;color:var(--text-3);margin-top:10px;}

/* ---------- 双栏布局:左锚点 + 右手风琴 ---------- */
.faq-layout{display:grid;grid-template-columns:268px minmax(0,1fr);gap:32px;align-items:start;}
.anchor-col{position:sticky;top:96px;}
.anchor-card{
  background:rgba(255,255,255,.045);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:20px;box-shadow:var(--shadow-card);
  backdrop-filter:blur(18px) saturate(140%);
}
.anchor-card h3{font-size:13px;letter-spacing:.12em;color:var(--text-3);font-weight:600;margin-bottom:14px;}
.anchor-list{display:flex;flex-direction:column;gap:6px;}
.anchor-list a{
  display:flex;align-items:center;gap:10px;
  min-height:46px;padding:10px 12px;border-radius:12px;
  color:var(--text-2);text-decoration:none;font-size:14px;line-height:1.5;
  border-left:2px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.anchor-list a span.num{
  font-family:"Inter",system-ui,sans-serif;font-size:12px;color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.anchor-list a:hover{background:rgba(255,255,255,.06);color:var(--text-1);}
.anchor-list a.active{background:rgba(46,230,201,.10);color:var(--glow);border-left-color:var(--glow);}
.anchor-list a.active span.num{color:var(--glow);}
.anchor-tip{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--border-soft);
  font-size:12px;color:var(--text-3);line-height:1.7;
}

/* ---------- FAQ 手风琴 ---------- */
.faq-group{margin-bottom:36px;scroll-margin-top:100px;}
.faq-group:last-child{margin-bottom:0;}
.faq-group-head{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:12px;
  padding-bottom:14px;border-bottom:1px solid var(--border-soft);margin-bottom:14px;
}
.faq-group-head .group-index{
  font-family:"Inter",system-ui,sans-serif;font-size:13px;color:var(--glow);
  font-variant-numeric:tabular-nums;letter-spacing:.08em;
}
.faq-group-head h2{font-size:22px;line-height:1.4;font-weight:700;}
.faq-group-head p{flex:1 1 100%;color:var(--text-2);font-size:14px;}
.faq-item{border-bottom:1px solid var(--border-soft);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:20px 2px;background:none;border:none;cursor:pointer;text-align:left;
  color:var(--text-1);font-size:17px;font-weight:600;line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--glow);}
.faq-q .faq-icon{
  position:relative;flex:none;width:22px;height:22px;margin-top:4px;border-radius:50%;
  border:1px solid var(--border);transition:border-color .25s var(--ease),transform .25s var(--ease);
}
.faq-q .faq-icon::before,.faq-q .faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-2);border-radius:2px;
  transform:translate(-50%,-50%);transition:background .25s var(--ease),opacity .25s var(--ease);
}
.faq-q .faq-icon::before{width:10px;height:1.6px;}
.faq-q .faq-icon::after{width:1.6px;height:10px;}
.faq-item.open .faq-q{color:var(--glow);}
.faq-item.open .faq-q .faq-icon{border-color:rgba(46,230,201,.55);transform:rotate(180deg);}
.faq-item.open .faq-q .faq-icon::before{background:var(--glow);}
.faq-item.open .faq-q .faq-icon::after{opacity:0;}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s var(--ease);}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a > div{overflow:hidden;}
.faq-a p{
  padding:0 2px 20px;color:var(--text-2);font-size:15px;line-height:1.9;
  max-width:44em;
}
.faq-a strong{color:var(--text-1);font-weight:600;}

/* ---------- 资料卡 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.info-card{
  background:var(--glass);border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-card);
  backdrop-filter:blur(18px) saturate(140%);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
  display:flex;flex-direction:column;
}
.info-card:hover{transform:translateY(-3px);border-color:rgba(46,230,201,.42);}
.info-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);}
.info-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.info-card:hover .thumb img{transform:scale(1.03);}
.info-card .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,0) 40%,rgba(6,10,18,.82));
}
.info-card .thumb .badge{position:absolute;left:14px;bottom:12px;z-index:2;}
.info-card .body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.info-card h3{font-size:18px;line-height:1.5;font-weight:600;}
.info-card p{font-size:14px;color:var(--text-2);line-height:1.8;}
.info-card .card-link{margin-top:auto;font-size:14px;font-weight:600;text-decoration:none;color:var(--glow);}
.info-card .card-link:hover{text-decoration:underline;}

/* ---------- 处理顺序 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:step;}
.step{
  position:relative;padding:24px 20px 22px;
  background:rgba(255,255,255,.045);border:1px solid var(--border);border-radius:var(--radius-lg);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.step:hover{transform:translateY(-3px);border-color:rgba(46,230,201,.4);}
.step .step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:11px;margin-bottom:14px;
  background:rgba(46,230,201,.10);border:1px solid rgba(46,230,201,.35);
  color:var(--glow);font-family:"Inter",system-ui,sans-serif;font-size:13px;font-weight:600;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:16px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- 仍未解决提示条 ---------- */
.help-strip{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  padding:28px 30px;border-radius:var(--radius-xl);
  background:linear-gradient(100deg,rgba(46,230,201,.10),rgba(61,107,255,.12));
  border:1px solid rgba(46,230,201,.28);
  position:relative;overflow:hidden;
}
.help-strip::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(46,230,201,.9),transparent);
}
.help-strip h2{font-size:20px;font-weight:700;line-height:1.4;}
.help-strip p{margin-top:8px;font-size:14px;color:var(--text-2);max-width:46em;}
.help-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 提交清单 ---------- */
.checklist{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;
  list-style:none;padding:0;margin:0;
}
.checklist li{
  display:flex;gap:12px;align-items:flex-start;
  padding:18px 20px;border-radius:var(--radius-md);
  background:rgba(255,255,255,.04);border:1px solid var(--border-soft);
  font-size:14px;color:var(--text-2);line-height:1.8;
}
.checklist li b{display:block;color:var(--text-1);font-size:15px;font-weight:600;margin-bottom:4px;}
.tick{
  flex:none;width:20px;height:20px;margin-top:3px;border-radius:50%;
  border:1px solid rgba(46,230,201,.6);position:relative;
}
.tick::after{
  content:"";position:absolute;left:5px;top:5px;width:8px;height:8px;border-radius:50%;
  background:rgba(46,230,201,.85);
}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  position:relative;
  border-radius:var(--radius-xl);
  padding:40px;
  background:linear-gradient(110deg,rgba(16,26,43,.95),rgba(11,18,32,.92));
  border:1px solid var(--border);
  box-shadow:var(--shadow-card);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(46,230,201,.85),transparent);
}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);line-height:1.35;font-weight:700;}
.cta-band p{margin-top:10px;color:var(--text-2);font-size:14px;}
.cta-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--border-soft);
  background:linear-gradient(180deg,rgba(11,18,32,.6),rgba(6,10,18,.95));
  padding:64px 0 28px;margin-top:24px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:24em;line-height:1.9;}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:var(--text-3);font-weight:600;margin-bottom:14px;}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:var(--text-2);line-height:1.7;}
.footer-col a{color:var(--text-2);text-decoration:none;}
.footer-col a:hover{color:var(--glow);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--border-soft);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}

/* ---------- 移动端底部转化条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(6,10,18,.92);backdrop-filter:blur(18px) saturate(140%);
  border-top:1px solid var(--border);
  align-items:center;justify-content:space-between;gap:14px;
}
.mobile-bar span{font-size:13px;color:var(--text-2);line-height:1.4;}
.mobile-bar .btn{flex:none;height:44px;padding:0 20px;font-size:14px;}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .nav-links a{padding:0 10px;font-size:13.5px;}
  .nav-actions{gap:10px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-links,.nav-actions{display:none;}
  .nav-toggle{display:block;margin-left:auto;}
  .nav{height:66px;}
  .page-hero{padding:56px 0 44px;}
  .faq-layout{grid-template-columns:1fr;gap:24px;}
  .anchor-col{position:static;}
  .anchor-card{padding:16px;}
  .anchor-list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:4px;}
  .anchor-list a{
    flex:none;min-height:40px;padding:0 14px;border-left:none;border-radius:999px;
    background:rgba(255,255,255,.05);border:1px solid var(--border);white-space:nowrap;
  }
  .anchor-list a.active{border-left:none;border-color:rgba(46,230,201,.45);}
  .anchor-tip{display:none;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  body{padding-bottom:80px;font-size:15px;}
  .section{padding:56px 0;}
  .page-hero{padding:44px 0 36px;}
  .hero-lead{font-size:15px;}
  .chip-nav{gap:8px;}
  .chip-nav a{height:34px;padding:0 13px;font-size:12.5px;}
  .card-grid,.steps{grid-template-columns:1fr;}
  .checklist{grid-template-columns:1fr;}
  .help-strip{padding:22px 20px;}
  .help-actions .btn{width:100%;}
  .cta-band{padding:26px 20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .mobile-bar{display:flex;}
  .faq-q{font-size:16px;padding:18px 0;}
  .faq-a p{font-size:14.5px;}
  .faq-group-head h2{font-size:19px;}
}
@media (max-width:420px){
  .brand-name{font-size:17px;}
  .page-hero h1{font-size:28px;}
  .btn{font-size:14px;}
  .search-bar input{font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category5 */
:root{
  --bg:#060A12;
  --surface-1:#0B1220;
  --surface-2:#101A2B;
  --indigo:#3D6BFF;
  --glow:#2EE6C9;
  --amber:#FFB454;
  --text-1:#E9F0FA;
  --text-2:#A7B6CC;
  --text-3:#74849C;
  --link:#8FB6FF;
  --success:#35D07F;
  --danger:#FF6B6B;
  --glass:rgba(255,255,255,.055);
  --glass-border:rgba(148,190,255,.16);
  --line:rgba(255,255,255,.08);
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-card:0 24px 60px -28px rgba(3,8,18,.9);
  --glow-ring:0 0 0 1px rgba(46,230,201,.35),0 14px 44px -10px rgba(46,230,201,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--link);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
a:hover{text-decoration-thickness:2px;}
h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font:inherit;color:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible,.btn:focus-visible{
  outline:2px solid var(--glow);
  outline-offset:2px;
  border-radius:6px;
}
::selection{background:rgba(46,230,201,.28);color:#fff;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(6,10,18,.72);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(148,190,255,.12);
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(6,10,18,.92);border-bottom-color:rgba(148,190,255,.2);}
.nav{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:72px;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:7px;
  text-decoration:none;
  color:var(--text-1);
  flex:0 0 auto;
}
.brand-name{
  font-size:22px;
  font-weight:700;
  letter-spacing:-.01em;
  color:#fff;
}
.brand-sub{
  font-size:11px;
  letter-spacing:.14em;
  color:var(--glow);
  border:1px solid rgba(46,230,201,.32);
  border-radius:999px;
  padding:1px 8px;
  line-height:1.7;
  font-weight:500;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:auto;
  margin-right:auto;
}
.nav-links a{
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 13px;
  border-radius:999px;
  font-size:14px;
  color:var(--text-2);
  text-decoration:none;
  white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.06);}
.nav-links a.active{
  color:#8FF3E4;
  background:rgba(46,230,201,.12);
  box-shadow:inset 0 0 0 1px rgba(46,230,201,.28);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:14px;
  flex:0 0 auto;
}
.nav-login{
  font-size:14px;
  color:var(--text-2);
  text-decoration:none;
  transition:color .2s var(--ease);
}
.nav-login:hover{color:var(--glow);}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid rgba(148,190,255,.2);
  background:rgba(255,255,255,.04);
  align-items:center;
  justify-content:center;
  cursor:pointer;
  flex:0 0 auto;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:rgba(46,230,201,.45);background:rgba(46,230,201,.08);}
.nav-toggle span{
  position:relative;
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--text-1);
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--text-1);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  text-decoration:none;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(100deg,var(--glow) 0%,#5AC8FF 52%,var(--indigo) 100%);
  color:#04121A;
  border-radius:999px;
  box-shadow:var(--glow-ring);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(46,230,201,.5),0 18px 48px -10px rgba(46,230,201,.6);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(46,230,201,.35),0 8px 22px -12px rgba(46,230,201,.45);}
.btn-ghost{
  background:rgba(255,255,255,.035);
  border-color:rgba(148,190,255,.24);
  color:var(--text-1);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{
  transform:translateY(-2px);
  border-color:rgba(46,230,201,.5);
  background:rgba(255,255,255,.07);
}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:64px 0 60px;
  border-bottom:1px solid rgba(148,190,255,.12);
  background:var(--bg) url("/assets/images/backpic/back-2.png") center 32% / cover no-repeat;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,.84) 0%,rgba(6,10,18,.93) 58%,var(--bg) 100%);
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(148,190,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(148,190,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.2) 70%,transparent 100%);
  mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.2) 70%,transparent 100%);
  opacity:.65;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:26px;
}
.breadcrumb li{display:inline-flex;align-items:center;gap:10px;}
.breadcrumb li+li::before{content:"/";color:rgba(148,190,255,.35);}
.breadcrumb a{color:var(--text-3);text-decoration:none;}
.breadcrumb a:hover{color:var(--glow);}
.breadcrumb li[aria-current="page"]{color:var(--text-2);}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  border:1px solid rgba(46,230,201,.28);
  background:rgba(46,230,201,.08);
  color:#8FF3E4;
  font-size:12px;
  letter-spacing:.06em;
  margin-bottom:20px;
}
.hero-kicker::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--glow);
  box-shadow:0 0 0 3px rgba(46,230,201,.18);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;}
  50%{opacity:.35;}
}
.page-hero h1{
  font-size:clamp(30px,4vw,48px);
  line-height:1.25;
  letter-spacing:-.01em;
  font-weight:700;
  max-width:20em;
  background:linear-gradient(120deg,#FFFFFF 0%,#D7E6FF 46%,var(--glow) 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  margin-top:20px;
  max-width:760px;
  font-size:16px;
  line-height:1.9;
  color:var(--text-2);
}
.cat-pills{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:30px;
}
.cat-pills a{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid rgba(148,190,255,.2);
  background:rgba(255,255,255,.04);
  color:var(--text-2);
  font-size:13.5px;
  text-decoration:none;
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.cat-pills a:hover{
  color:var(--text-1);
  border-color:rgba(46,230,201,.45);
  background:rgba(255,255,255,.07);
  transform:translateY(-2px);
}
.cat-pills a.current{
  color:#8FF3E4;
  border-color:rgba(46,230,201,.45);
  background:rgba(46,230,201,.1);
  box-shadow:inset 0 0 0 1px rgba(46,230,201,.18);
}

/* ---------- Sections ---------- */
.section{padding:72px 0;}
.section--tight{padding:48px 0;}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:40px;
}
.eyebrow{
  display:block;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--glow);
  margin-bottom:12px;
  font-weight:600;
}
.section-title{
  font-size:30px;
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--text-1);
}
.section-desc{
  margin-top:14px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
  max-width:680px;
}
.head-link{
  font-size:14px;
  color:var(--text-2);
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:color .2s var(--ease),gap .2s var(--ease);
}
.head-link:hover{color:var(--glow);gap:10px;}

/* ---------- Change types ---------- */
.change-list{
  display:flex;
  flex-direction:column;
  gap:16px;
}
.change-row{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:24px;
  padding:24px 26px;
  border-radius:var(--radius-card);
  border:1px solid var(--glass-border);
  background:var(--glass);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.change-row:hover{transform:translateY(-2px);border-color:rgba(46,230,201,.4);}
.change-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid rgba(46,230,201,.35);
  background:rgba(46,230,201,.08);
  color:var(--glow);
  font-size:15px;
  font-weight:600;
  font-variant-numeric:tabular-nums;
}
.change-body h3{
  font-size:18px;
  font-weight:600;
  line-height:1.4;
  color:var(--text-1);
}
.change-body p{
  margin-top:6px;
  font-size:14.5px;
  line-height:1.8;
  color:var(--text-2);
}
.change-tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  border:1px solid rgba(148,190,255,.2);
  background:rgba(255,255,255,.04);
  color:var(--text-2);
  font-size:12px;
  letter-spacing:.04em;
  white-space:nowrap;
}

/* ---------- Timeline ---------- */
.timeline-wrap{position:relative;}
.timeline{
  position:relative;
  margin:0;
  padding:0;
}
.timeline::before{
  content:"";
  position:absolute;
  left:148px;
  top:14px;
  bottom:14px;
  width:1px;
  background:linear-gradient(180deg,rgba(46,230,201,.55) 0%,rgba(148,190,255,.16) 32%,rgba(148,190,255,.08) 100%);
}
.timeline-item{
  position:relative;
  padding-left:180px;
  padding-bottom:24px;
}
.timeline-item:last-child{padding-bottom:0;}
.timeline-item::before{
  content:"";
  position:absolute;
  left:148px;
  top:26px;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--bg);
  border:2px solid rgba(148,190,255,.4);
  transform:translateX(-50%);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.timeline-item.is-latest::before{
  border-color:var(--glow);
  box-shadow:0 0 0 4px rgba(46,230,201,.16);
}
.timeline-date{
  position:absolute;
  left:0;
  top:20px;
  width:126px;
  text-align:right;
  font-size:13px;
  line-height:1.6;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.release-card{
  position:relative;
  padding:22px 26px;
  border-radius:var(--radius-card);
  border:1px solid var(--glass-border);
  background:var(--glass);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.release-card:hover{transform:translateY(-2px);border-color:rgba(46,230,201,.4);}
.timeline-item.is-latest .release-card{
  box-shadow:inset 3px 0 0 var(--glow),var(--shadow-card);
  border-color:rgba(46,230,201,.28);
}
.release-top{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
}
.ver-badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 11px;
  border-radius:999px;
  border:1px solid rgba(46,230,201,.35);
  background:rgba(46,230,201,.1);
  color:#8FF3E4;
  font-size:12px;
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
  font-weight:600;
}
.flag-latest{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 11px;
  border-radius:999px;
  border:1px solid rgba(255,180,84,.45);
  color:var(--amber);
  font-size:12px;
  letter-spacing:.04em;
}
.release-card h3{
  font-size:18px;
  font-weight:600;
  line-height:1.5;
  color:var(--text-1);
}
.release-card p{
  margin-top:8px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--text-2);
}
.release-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  margin-top:16px;
  padding-top:16px;
  border-top:1px solid var(--line);
}
.release-scope{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
}
.release-scope strong{
  font-weight:500;
  color:var(--text-2);
}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--link);
  text-decoration:none;
  transition:gap .2s var(--ease),color .2s var(--ease);
}
.link-arrow:hover{gap:10px;color:var(--glow);}

/* ---------- Rules ---------- */
.rules-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);
  gap:32px;
  align-items:stretch;
}
.rule-media{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow-card);
  min-height:320px;
}
.rule-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  border-radius:0;
}
.rule-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,.15) 0%,rgba(6,10,18,.72) 100%);
}
.rule-media figcaption{
  position:absolute;
  left:22px;
  right:22px;
  bottom:18px;
  z-index:2;
  font-size:13px;
  line-height:1.7;
  color:var(--text-2);
}
.rule-panel{
  padding:30px 32px;
  border-radius:var(--radius-card);
  border:1px solid var(--glass-border);
  background:var(--glass);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.rule-panel h3{
  font-size:20px;
  font-weight:600;
  line-height:1.45;
  color:var(--text-1);
}
.rule-panel > p{
  margin-top:12px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--text-2);
}
.rule-list{
  margin-top:22px;
  display:flex;
  flex-direction:column;
  gap:0;
}
.rule-list li{
  display:grid;
  grid-template-columns:96px minmax(0,1fr);
  gap:16px;
  padding:16px 0;
  border-top:1px solid var(--line);
}
.rule-list li:first-child{border-top:none;padding-top:0;}
.rule-key{
  font-size:13.5px;
  color:var(--glow);
  letter-spacing:.04em;
  font-weight:600;
  font-variant-numeric:tabular-nums;
}
.rule-val{
  font-size:14.5px;
  line-height:1.8;
  color:var(--text-2);
}

/* ---------- FAQ ---------- */
.faq-list{
  display:flex;
  flex-direction:column;
  border-radius:var(--radius-card);
  border:1px solid var(--glass-border);
  background:var(--glass);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  overflow:hidden;
}
.faq-item{border-top:1px solid var(--line);}
.faq-item:first-child{border-top:none;}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 26px;
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  color:var(--text-1);
  cursor:pointer;
  list-style:none;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:rgba(255,255,255,.04);color:#fff;}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:20px;
  height:20px;
  border-radius:50%;
  border:1px solid rgba(148,190,255,.3);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  top:50%;
  left:50%;
  background:var(--glow);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq-icon::before{width:9px;height:1.5px;}
.faq-icon::after{width:1.5px;height:9px;}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-body{
  padding:0 26px 24px;
  font-size:14.5px;
  line-height:1.9;
  color:var(--text-2);
  max-width:820px;
}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:38px 40px;
  border-radius:22px;
  border:1px solid var(--glass-border);
  background:linear-gradient(120deg,rgba(46,230,201,.1) 0%,rgba(61,107,255,.1) 50%,rgba(255,255,255,.04) 100%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--glow),transparent);
}
.cta-copy h2{
  font-size:24px;
  font-weight:700;
  line-height:1.4;
  color:var(--text-1);
}
.cta-copy p{
  margin-top:10px;
  font-size:14.5px;
  line-height:1.8;
  color:var(--text-2);
  max-width:620px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:24px;
  border-top:1px solid rgba(148,190,255,.14);
  background:var(--surface-1);
  padding:56px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{
  font-size:14px;
  line-height:1.85;
  color:var(--text-3);
  max-width:320px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--text-1);
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:var(--text-3);line-height:1.7;}
.footer-col a{
  color:var(--text-2);
  text-decoration:none;
  font-size:14px;
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--glow);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ---------- Mobile drawer & bar ---------- */
.drawer-backdrop{
  position:fixed;
  inset:0;
  z-index:190;
  background:rgba(3,6,12,.62);
  -webkit-backdrop-filter:blur(4px);
  backdrop-filter:blur(4px);
  opacity:0;
  visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
}
.drawer-backdrop.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  z-index:200;
  width:min(86vw,360px);
  display:flex;
  flex-direction:column;
  padding:20px 20px calc(24px + env(safe-area-inset-bottom));
  background:rgba(9,15,26,.97);
  border-left:1px solid rgba(148,190,255,.16);
  -webkit-backdrop-filter:blur(20px);
  backdrop-filter:blur(20px);
  transform:translateX(105%);
  transition:transform .32s var(--ease);
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
  margin-bottom:12px;
}
.drawer-close{
  width:38px;
  height:38px;
  border-radius:10px;
  border:1px solid rgba(148,190,255,.2);
  background:rgba(255,255,255,.04);
  color:var(--text-2);
  font-size:20px;
  line-height:1;
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.drawer-close:hover{border-color:rgba(46,230,201,.45);color:var(--glow);}
.drawer-links{display:flex;flex-direction:column;}
.drawer-links a{
  display:flex;
  align-items:center;
  min-height:48px;
  padding:0 12px;
  border-radius:10px;
  font-size:15px;
  color:var(--text-2);
  text-decoration:none;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.drawer-links a:hover{background:rgba(255,255,255,.06);color:var(--text-1);}
.drawer-links a.active{color:#8FF3E4;background:rgba(46,230,201,.1);}
.drawer-cta{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
.drawer-cta .btn{width:100%;}
.mobile-bar{
  display:none;
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:130;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:10px 18px calc(10px + env(safe-area-inset-bottom));
  background:rgba(6,10,18,.94);
  border-top:1px solid rgba(148,190,255,.16);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
}
.mobile-bar .mb-text{
  font-size:13px;
  color:var(--text-2);
  line-height:1.5;
}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .nav-login{display:none;}
  .section{padding:64px 0;}
  .rules-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .rule-media{min-height:240px;}
}
@media (max-width:767px){
  body{padding-bottom:84px;font-size:15.5px;}
  .container{padding:0 18px;}
  .page-hero{padding:44px 0 44px;}
  .hero-lead{font-size:15px;}
  .cat-pills a{height:34px;padding:0 13px;font-size:12.5px;}
  .section{padding:48px 0;}
  .section--tight{padding:36px 0;}
  .section-head{margin-bottom:28px;}
  .section-title{font-size:24px;}
  .change-row{grid-template-columns:auto minmax(0,1fr);gap:16px;padding:20px;}
  .change-tag{grid-column:1 / -1;justify-self:start;}
  .timeline::before{left:6px;}
  .timeline-item{padding-left:28px;padding-bottom:20px;}
  .timeline-item::before{left:6px;top:12px;}
  .timeline-date{
    position:static;
    width:auto;
    text-align:left;
    display:block;
    margin-bottom:10px;
    font-size:12.5px;
  }
  .release-card{padding:20px;}
  .release-meta{flex-direction:column;align-items:flex-start;gap:10px;}
  .rule-panel{padding:24px 20px;}
  .rule-list li{grid-template-columns:1fr;gap:6px;}
  .faq-item summary{padding:18px;font-size:15.5px;}
  .faq-body{padding:0 18px 20px;}
  .cta-band{padding:26px 22px;gap:20px;}
  .cta-copy h2{font-size:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .mobile-bar{display:flex;}
}
@media (max-width:420px){
  .brand-name{font-size:19px;}
  .page-hero h1{font-size:27px;}
  .change-num{width:38px;height:38px;font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}