/* roulang page: index */
:root{
  --ink-900:#05060F;
  --ink-800:#0A0E22;
  --ink-700:#111634;
  --ink-600:#1A2044;
  --line-1:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.06);
  --primary:#7C5CFF;
  --primary-700:#5B3FE0;
  --secondary:#2DD4F0;
  --accent:#FFC661;
  --success:#34D399;
  --warning:#F5A524;
  --error:#FB7185;
  --text-1:#EEF1FF;
  --text-2:#A9B3D6;
  --text-3:#6C7799;
  --r-card:16px;
  --r-lg:24px;
  --r-pill:999px;
  --r-input:10px;
  --shadow-1:0 6px 20px rgba(3,6,24,.55);
  --shadow-2:0 18px 48px rgba(3,6,24,.65);
  --shadow-glow:0 0 0 1px rgba(124,92,255,.45),0 10px 34px rgba(124,92,255,.32);
  --shadow-glow-gold:0 0 0 1px rgba(255,198,97,.5),0 10px 30px rgba(255,198,97,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--text-1);
  background-color:var(--ink-800);
  background-image:
    radial-gradient(900px 520px at 6% -8%, rgba(124,92,255,.14), transparent 62%),
    radial-gradient(780px 460px at 94% 2%, rgba(45,212,240,.09), transparent 60%),
    radial-gradient(1.5px 1.5px at 12% 18%, rgba(255,255,255,.45), transparent 100%),
    radial-gradient(1.5px 1.5px at 32% 42%, rgba(255,255,255,.32), transparent 100%),
    radial-gradient(1.5px 1.5px at 58% 12%, rgba(255,255,255,.38), transparent 100%),
    radial-gradient(1.5px 1.5px at 76% 34%, rgba(255,255,255,.30), transparent 100%),
    radial-gradient(1.5px 1.5px at 88% 66%, rgba(255,255,255,.36), transparent 100%),
    radial-gradient(1.5px 1.5px at 22% 74%, rgba(255,255,255,.28), transparent 100%);
  background-attachment:fixed,fixed,scroll,scroll,scroll,scroll,scroll,scroll;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:600;letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section.tight{padding:72px 0}
.band{background:var(--ink-900);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2);position:relative}
.band::before{content:"";position:absolute;inset:0 0 auto;height:1px;background:linear-gradient(90deg,transparent,rgba(124,92,255,.55),transparent)}
.band-alt{background:linear-gradient(180deg,rgba(17,22,52,.72),rgba(10,14,34,.9))}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;color:var(--secondary);text-transform:none}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--secondary);box-shadow:0 0 10px rgba(45,212,240,.9)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.sec-head h2{font-size:32px;margin-top:14px}
.sec-head .sec-note{font-size:14px;color:var(--text-2);max-width:420px;line-height:1.8}
.sec-head .more{font-size:14px;color:var(--secondary);display:inline-flex;align-items:center;gap:6px;transition:gap .18s var(--ease)}
.sec-head .more:hover{gap:12px;color:var(--text-1)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60}
.brand-row{background:rgba(10,14,34,.86);backdrop-filter:blur(22px) saturate(140%);border-bottom:1px solid var(--line-2);transition:background .2s var(--ease)}
.site-header.scrolled .brand-row{background:rgba(10,14,34,.94);border-bottom-color:var(--line-1)}
.brand-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .2s var(--ease)}
.site-header.scrolled .brand-inner{height:60px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(140deg,rgba(124,92,255,.9),rgba(45,212,240,.75));box-shadow:var(--shadow-glow);display:grid;place-items:center;position:relative}
.brand-mark span{width:16px;height:16px;background:var(--text-1);clip-path:polygon(50% 0,61% 35%,98% 35%,68% 57%,79% 92%,50% 70%,21% 92%,32% 57%,2% 35%,39% 35%);opacity:.95}
.brand-text b{display:block;font-size:17px;font-weight:700;letter-spacing:0}
.brand-text small{display:block;font-size:12px;color:var(--text-3);line-height:1.4}
.search{flex:1;max-width:320px;position:relative}
.search input{width:100%;height:42px;border-radius:var(--r-input);border:1px solid var(--line-1);background:var(--ink-600);padding:0 40px 0 14px;font-size:14px;color:var(--text-1);transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.search input::placeholder{color:var(--text-3)}
.search input:focus{border-color:var(--primary);box-shadow:0 0 0 2px rgba(124,92,255,.28);outline:none}
.search::after{content:"";position:absolute;right:14px;top:50%;width:14px;height:14px;transform:translateY(-50%);border:2px solid var(--text-3);border-radius:50%;pointer-events:none}
.search::before{content:"";position:absolute;right:10px;top:calc(50% + 7px);width:7px;height:2px;background:var(--text-3);transform:rotate(45deg);pointer-events:none}
.brand-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.link-help{font-size:14px;color:var(--text-2);transition:color .18s var(--ease)}
.link-help:hover{color:var(--text-1)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-pill);border:1px solid transparent;font-size:15px;font-weight:500;cursor:pointer;transition:transform .15s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease)}
.btn-sm{height:44px;padding:0 20px;font-size:14px}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#070A1C;box-shadow:var(--shadow-glow)}
.btn-primary:hover{filter:brightness(1.06);box-shadow:var(--shadow-glow),0 0 26px rgba(124,92,255,.42)}
.btn-gold{background:linear-gradient(135deg,#FFD98A,var(--accent));color:#1B1405;font-weight:600;box-shadow:var(--shadow-glow-gold)}
.btn-gold:hover{filter:brightness(1.06);box-shadow:var(--shadow-glow-gold),0 0 26px rgba(255,198,97,.36)}
.btn-ghost{background:transparent;border-color:var(--line-1);color:var(--text-1)}
.btn-ghost:hover{border-color:rgba(124,92,255,.55);background:rgba(124,92,255,.08)}
.btn-text{display:inline-flex;align-items:center;gap:8px;color:var(--secondary);font-size:14px;transition:gap .18s var(--ease),color .18s var(--ease)}
.btn-text:hover{gap:12px;color:var(--text-1)}
.btn:active{transform:translateY(1px)}
.btn-primary:active{background:linear-gradient(135deg,var(--primary-700),#1FA6BE)}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.burger{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-1);background:rgba(255,255,255,.04);cursor:pointer;position:relative}
.burger i{position:absolute;left:12px;width:20px;height:2px;background:var(--text-1);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.burger i:nth-child(1){top:15px}
.burger i:nth-child(2){top:21px}
.burger i:nth-child(3){top:27px}
.chan-row{border-bottom:1px solid var(--line-2);background:rgba(10,14,34,.72);backdrop-filter:blur(22px)}
.chan-inner{display:flex;align-items:center;gap:6px;height:52px;overflow-x:auto;scrollbar-width:none}
.chan-inner::-webkit-scrollbar{display:none}
.chan-link{position:relative;flex:0 0 auto;padding:0 16px;height:38px;display:inline-flex;align-items:center;font-size:14.5px;color:var(--text-2);border-radius:10px;transition:background .18s var(--ease),color .18s var(--ease)}
.chan-link:hover{background:rgba(255,255,255,.06);color:var(--text-1)}
.chan-link.active{color:var(--text-1);background:rgba(124,92,255,.12)}
.chan-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:-7px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 12px rgba(124,92,255,.9)}
/* ---------- drawer ---------- */
.drawer{position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;background:rgba(10,14,34,.96);backdrop-filter:blur(22px);border-left:1px solid var(--line-1);transform:translateX(102%);transition:transform .26s var(--ease);z-index:90;display:flex;flex-direction:column;padding:20px}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line-2)}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line-1);background:transparent;cursor:pointer;font-size:18px;color:var(--text-2)}
.drawer-nav{margin-top:10px;overflow-y:auto;flex:1}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;height:52px;padding:0 6px;border-bottom:1px solid var(--line-2);color:var(--text-2);font-size:16px}
.drawer-nav a.active{color:var(--text-1)}
.drawer-nav a::after{content:"›";color:var(--text-3)}
.drawer-foot{padding-top:14px}
.drawer-foot .btn{width:100%}
.scrim{position:fixed;inset:0;background:rgba(3,6,24,.6);opacity:0;visibility:hidden;transition:opacity .24s var(--ease);z-index:80}
.scrim.open{opacity:1;visibility:visible}
/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line-2);background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;min-height:min(760px,calc(100vh - 124px));display:flex;align-items:center}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(5,6,15,.92) 0%,rgba(5,6,15,.78) 45%,rgba(5,6,15,.66) 100%)}
.hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(1.5px 1.5px at 18% 30%,rgba(255,255,255,.55),transparent 100%),radial-gradient(1.5px 1.5px at 46% 16%,rgba(255,255,255,.4),transparent 100%),radial-gradient(1.5px 1.5px at 72% 52%,rgba(255,255,255,.34),transparent 100%),radial-gradient(1.5px 1.5px at 88% 24%,rgba(255,255,255,.42),transparent 100%);pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;padding:64px 0}
.hero h1{font-size:48px;margin:18px 0 16px}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--accent),var(--secondary));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:18px;color:var(--text-2);max-width:520px}
.hero-points{display:flex;flex-wrap:wrap;gap:8px 24px;margin:22px 0 30px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.hero-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--secondary);box-shadow:0 0 8px rgba(45,212,240,.9)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
/* login card */
.glass{background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.025));border:1px solid var(--line-1);border-radius:var(--r-card);backdrop-filter:blur(16px) saturate(140%);box-shadow:inset 0 1px 0 rgba(255,255,255,.18)}
.login-card{position:relative;padding:28px;border-radius:var(--r-lg);background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.028));border:1px solid var(--line-1);backdrop-filter:blur(16px) saturate(140%);box-shadow:var(--shadow-glow);overflow:hidden}
.login-card::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(124,92,255,.95),transparent)}
.login-card h2{font-size:20px}
.login-card .card-sub{font-size:13.5px;color:var(--text-3);margin-top:6px}
.field{margin-top:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;height:48px;border-radius:var(--r-input);border:1px solid var(--line-1);background:var(--ink-600);padding:0 14px;font-size:14.5px;color:var(--text-1);transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.75;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 2px rgba(124,92,255,.3);outline:none}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--error);box-shadow:0 0 0 2px rgba(251,113,133,.22)}
.err-msg{display:none;font-size:12px;color:var(--error);margin-top:6px}
.field.invalid .err-msg{display:block}
.hint-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px;font-size:13px;color:var(--text-3)}
.hint-row a{color:var(--secondary)}
.hint-row a:hover{color:var(--text-1)}
.login-card .btn{width:100%;margin-top:18px}
.card-foot{font-size:12px;color:var(--text-3);margin-top:14px;display:flex;gap:8px;align-items:flex-start;line-height:1.7}
.card-foot::before{content:"";flex:0 0 auto;width:12px;height:12px;margin-top:5px;border-radius:4px;border:1px solid rgba(45,212,240,.5);background:rgba(45,212,240,.14)}
/* ---------- metrics ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric{padding:24px;border-radius:var(--r-card);background:var(--ink-600);border:1px solid var(--line-1);position:relative;overflow:hidden;transition:transform .22s var(--ease),border-color .22s var(--ease)}
.metric:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.45)}
.metric .num{font-family:var(--font-mono);font-size:44px;font-weight:700;line-height:1.1;color:var(--text-1)}
.metric .num small{font-size:18px;font-weight:500;color:var(--text-2);margin-left:4px}
.metric .name{margin-top:10px;font-size:15px;color:var(--text-1)}
.metric .meta{margin-top:14px;padding-top:12px;border-top:1px solid var(--line-2);font-size:12px;color:var(--text-3)}
.metric .meta::before{content:"";position:absolute;left:24px;right:24px;top:auto;height:1px}
/* ---------- services ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.svc{padding:24px;border-radius:var(--r-card);display:flex;flex-direction:column;gap:12px;transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)}
.svc:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.45);box-shadow:0 10px 30px rgba(124,92,255,.16)}
.svc h3{font-size:18px}
.svc p{font-size:14px;color:var(--text-2);line-height:1.75}
.svc .btn-text{margin-top:auto;padding-top:12px}
.svc-hero{grid-column:span 6;padding:0;overflow:hidden}
.svc-hero img{width:100%;height:210px;object-fit:cover;border-bottom:1px solid var(--line-1)}
.svc-hero .svc-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.svc-mini{grid-column:span 3;align-items:flex-start}
.svc-ico{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:rgba(124,92,255,.16);border:1px solid rgba(124,92,255,.34)}
.svc-ico span{width:14px;height:14px;background:var(--secondary);clip-path:polygon(50% 0,61% 35%,98% 35%,68% 57%,79% 92%,50% 70%,21% 92%,32% 57%,2% 35%,39% 35%)}
.svc-b{grid-column:span 4}
.svc-c{grid-column:span 3}
.svc-d{grid-column:8/span 5}
/* ---------- news ---------- */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
.tab{padding:8px 16px;border-radius:var(--r-pill);font-size:14px;color:var(--text-2);border:1px solid var(--line-1);background:rgba(255,255,255,.03);transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease)}
.tab:hover{color:var(--text-1);background:rgba(255,255,255,.07)}
.tab.active{color:var(--text-1);background:rgba(124,92,255,.12);border-color:rgba(124,92,255,.5);box-shadow:inset 0 -2px 0 var(--primary)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{border-radius:var(--r-card);overflow:hidden;background:var(--ink-600);border:1px solid var(--line-1);display:flex;flex-direction:column;transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)}
.news-card:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.45);box-shadow:0 12px 32px rgba(3,6,24,.6)}
.news-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--ink-700)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.badge{position:absolute;left:12px;top:12px;display:inline-flex;align-items:center;padding:4px 10px;border-radius:var(--r-pill);font-size:12px;color:var(--secondary);background:rgba(10,14,34,.7);border:1px solid rgba(45,212,240,.35);backdrop-filter:blur(10px)}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:17px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .18s var(--ease)}
.news-card:hover .news-body h3{color:var(--secondary)}
.news-body p{font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--line-2);display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-3)}
.news-meta .read{color:var(--secondary)}
.empty-state{grid-column:1/-1;min-height:320px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;border:1px dashed var(--line-1);border-radius:var(--r-lg);background:rgba(255,255,255,.02);text-align:center;padding:40px}
.empty-state .star{width:48px;height:48px;background:linear-gradient(140deg,rgba(124,92,255,.6),rgba(45,212,240,.5));clip-path:polygon(50% 0,61% 35%,98% 35%,68% 57%,79% 92%,50% 70%,21% 92%,32% 57%,2% 35%,39% 35%)}
.empty-state strong{font-size:16px}
.empty-state span{font-size:13px;color:var(--text-3)}
/* ---------- compare ---------- */
.compare{display:grid;grid-template-columns:1fr auto 1fr;gap:0;align-items:stretch;position:relative}
.cmp-panel{padding:28px;border-radius:var(--r-card);background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.02));border:1px solid var(--line-1)}
.cmp-panel h3{font-size:17px;margin-bottom:16px}
.cmp-panel li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2);padding:10px 0;border-bottom:1px solid var(--line-2)}
.cmp-panel li:last-child{border-bottom:0}
.cmp-panel li i{flex:0 0 auto;width:20px;height:20px;margin-top:5px;border-radius:50%;border:1px solid var(--line-1);display:grid;place-items:center}
.cmp-panel li i::after{content:"";width:8px;height:4px;border-left:2px solid var(--text-3);border-bottom:2px solid var(--text-3);transform:rotate(-45deg) translateY(-1px)}
.cmp-good li i{border-color:rgba(45,212,240,.55);background:rgba(45,212,240,.12)}
.cmp-good li i::after{border-color:var(--secondary)}
.cmp-good li{color:var(--text-1)}
.cmp-mid{width:1px;background:linear-gradient(180deg,transparent,rgba(124,92,255,.7),transparent);position:relative;margin:0 28px}
.cmp-mid span{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:44px;height:44px;border-radius:50%;background:var(--ink-800);border:1px solid rgba(124,92,255,.6);display:grid;place-items:center;font-size:12px;color:var(--text-2);box-shadow:var(--shadow-glow)}
/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.step-list li{display:flex;gap:16px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--line-2)}
.step-list li:last-child{border-bottom:0}
.step-no{flex:0 0 auto;width:36px;height:36px;border-radius:50%;background:rgba(124,92,255,.18);border:1px solid rgba(124,92,255,.45);display:grid;place-items:center;font-family:var(--font-mono);font-size:14px;color:var(--text-1)}
.step-list b{display:block;font-size:16px;font-weight:600}
.step-list p{font-size:14px;color:var(--text-2)}
.mini-login{padding:24px;border-radius:var(--r-card);background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.025));border:1px solid var(--line-1);box-shadow:var(--shadow-1)}
.mini-login h3{font-size:17px}
.mini-login p{font-size:13.5px;color:var(--text-3);margin-top:8px}
.mini-login .btn{width:100%;margin-top:18px}
/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line-1)}
.faq-item{border-bottom:1px solid var(--line-1)}
.faq-q{width:100%;background:transparent;border:0;cursor:pointer;display:flex;align-items:center;gap:16px;min-height:56px;padding:16px 0;text-align:left;font-size:16px;font-weight:500;color:var(--text-1);transition:color .18s var(--ease)}
.faq-q:hover{color:var(--secondary)}
.faq-q .idx{font-family:var(--font-mono);font-size:13px;color:var(--secondary);flex:0 0 auto}
.faq-q .sign{margin-left:auto;flex:0 0 auto;width:22px;height:22px;position:relative}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;background:var(--text-2);border-radius:2px;transition:transform .2s var(--ease),background .2s var(--ease)}
.faq-q .sign::before{left:0;top:10px;width:22px;height:2px}
.faq-q .sign::after{left:10px;top:0;width:2px;height:22px}
.faq-item.open .faq-q .sign::after{transform:rotate(90deg);opacity:0}
.faq-item.open .faq-q{color:var(--secondary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a p{font-size:15px;color:var(--text-2);line-height:1.85;padding:0 0 20px 40px}
.faq-side{padding:28px;border-radius:var(--r-card);background:var(--ink-600);border:1px solid var(--line-1)}
.faq-side h3{font-size:18px}
.faq-side p{font-size:14px;color:var(--text-2);margin-top:10px}
.faq-side .btn{width:100%;margin-top:20px}
.faq-grid{display:grid;grid-template-columns:8fr 4fr;gap:32px;align-items:start}
/* ---------- form ---------- */
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.trust{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.trust li{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--text-2)}
.trust li::before{content:"";flex:0 0 auto;width:14px;height:8px;margin-top:7px;border-left:2px solid var(--secondary);border-bottom:2px solid var(--secondary);transform:rotate(-45deg)}
.form-card{padding:28px;border-radius:var(--r-lg);background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.025));border:1px solid var(--line-1);backdrop-filter:blur(16px);box-shadow:var(--shadow-1)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.check{display:flex;gap:10px;align-items:flex-start;margin-top:18px;font-size:13px;color:var(--text-2);cursor:pointer}
.check input{appearance:none;width:20px;height:20px;flex:0 0 auto;margin:2px 0 0;border-radius:6px;border:1px solid var(--line-1);background:var(--ink-600);cursor:pointer;position:relative;transition:background .18s var(--ease),border-color .18s var(--ease)}
.check input:checked{background:var(--primary);border-color:var(--primary)}
.check input:checked::after{content:"";position:absolute;left:6px;top:2px;width:6px;height:11px;border-right:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(40deg)}
.form-card .btn{width:100%;margin-top:22px}
.form-note{font-size:12px;color:var(--text-3);margin-top:12px;text-align:center}
.success-panel{display:none;flex-direction:column;align-items:center;gap:12px;text-align:center;padding:48px 24px;border-radius:var(--r-lg);background:linear-gradient(160deg,rgba(52,211,153,.12),rgba(255,255,255,.02));border:1px solid rgba(52,211,153,.35)}
.success-panel.show{display:flex}
.success-panel .ok{width:44px;height:44px;border-radius:50%;border:1px solid rgba(52,211,153,.5);background:rgba(52,211,153,.16);display:grid;place-items:center}
.success-panel .ok::after{content:"";width:10px;height:18px;border-right:2px solid var(--success);border-bottom:2px solid var(--success);transform:rotate(40deg) translateY(-2px)}
/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);position:relative;padding:64px 0 28px;margin-top:0}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(124,92,255,.6),transparent)}
.site-footer::after{content:"";position:absolute;top:-160px;left:50%;transform:translateX(-50%);width:760px;height:320px;background:radial-gradient(closest-side,rgba(124,92,255,.14),transparent);pointer-events:none}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1.2fr;gap:32px;position:relative;z-index:1}
.foot-brand p{font-size:13.5px;color:var(--text-3);margin-top:14px;max-width:280px;line-height:1.8}
.contact-line{font-size:13.5px;color:var(--text-2);margin-top:12px}
.contact-line b{font-family:var(--font-mono);font-size:16px;color:var(--text-1);display:block;letter-spacing:.02em}
.qr{margin-top:18px;width:96px;height:96px;border-radius:14px;border:1px solid var(--line-1);background:linear-gradient(150deg,rgba(255,255,255,.08),rgba(255,255,255,.02));display:grid;place-items:center;font-size:11px;color:var(--text-3);text-align:center;line-height:1.5}
.foot-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px}
.foot-col a{display:block;font-size:13.5px;color:var(--text-3);padding:6px 0;position:relative;transition:color .18s var(--ease),padding-left .18s var(--ease)}
.foot-col a::before{content:"";position:absolute;left:0;top:50%;width:2px;height:0;background:var(--primary);transform:translateY(-50%);transition:height .18s var(--ease)}
.foot-col a:hover{color:var(--text-1);padding-left:10px}
.foot-col a:hover::before{height:14px}
.foot-login{padding:20px;border-radius:var(--r-card);background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));border:1px solid var(--line-1)}
.foot-login h4{font-size:14px;margin-bottom:8px}
.foot-login p{font-size:12.5px;color:var(--text-3);line-height:1.7}
.foot-login .btn{width:100%;margin-top:14px}
.copy{margin-top:48px;padding-top:20px;border-top:1px solid var(--line-2);display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;font-size:12px;color:var(--text-3);position:relative;z-index:1}
.copy a{color:var(--text-3)}
.copy a:hover{color:var(--text-1)}
/* ---------- mobile bar ---------- */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;gap:12px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(10,14,34,.92);backdrop-filter:blur(22px);border-top:1px solid var(--line-1);transform:translateY(120%);transition:transform .26s var(--ease)}
.mobile-bar.show{transform:translateY(0)}
.mobile-bar .btn{flex:1}
/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.in{opacity:1;transform:none}
/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero h1{font-size:42px}
  .metric .num{font-size:38px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .search{max-width:200px}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:56px 0}
  .hero{min-height:auto}
  .hero h1{font-size:36px}
  .svc-hero{grid-column:span 12}
  .svc-mini{grid-column:span 6}
  .svc-b{grid-column:span 6}
  .svc-c{grid-column:span 6}
  .svc-d{grid-column:span 6}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .faq-grid{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .steps{grid-template-columns:1fr;gap:32px}
  .foot-grid{grid-template-columns:1fr 1fr 1fr;gap:28px}
  .foot-login{grid-column:span 3}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .brand-inner{height:64px}
  .search{display:none}
  .burger{display:block}
  .link-help{display:none}
  .brand-text small{display:none}
  .hero h1{font-size:30px}
  .hero-sub{font-size:16px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .sec-head h2{font-size:24px}
  .news-grid{grid-template-columns:1fr}
  .svc-mini,.svc-b,.svc-c,.svc-d,.svc-hero{grid-column:span 12}
  .compare{grid-template-columns:1fr}
  .cmp-mid{width:100%;height:1px;margin:20px 0;background:linear-gradient(90deg,transparent,rgba(124,92,255,.7),transparent)}
  .cmp-mid span{top:50%}
  .form-row{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:24px}
  .foot-login{grid-column:span 1}
  .mobile-bar{display:flex}
  .site-footer{padding-bottom:96px}
  .faq-a p{padding-left:0}
  .metric .num{font-size:30px}
}
@media (max-width:519px){
  .hero h1{font-size:26px}
  .metric .num{font-size:28px}
  .metrics{gap:12px}
  .metric{padding:18px}
  .btn{width:100%}
  .hero-cta .btn,.form-card .btn,.mini-login .btn{width:100%}
  .btn-sm{width:auto}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink-900:#05060F;
  --ink-800:#0A0E22;
  --ink-700:#111634;
  --ink-600:#1A2044;
  --line-1:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.06);
  --primary:#7C5CFF;
  --primary-700:#5B3FE0;
  --secondary:#2DD4F0;
  --accent:#FFC661;
  --success:#34D399;
  --warning:#F5A524;
  --error:#FB7185;
  --text-1:#EEF1FF;
  --text-2:#A9B3D6;
  --text-3:#6C7799;
  --r-card:16px;
  --r-lg:24px;
  --r-input:10px;
  --r-pill:999px;
  --shadow-1:0 6px 20px rgba(3,6,24,.55);
  --shadow-2:0 18px 48px rgba(3,6,24,.65);
  --shadow-glow:0 0 0 1px rgba(124,92,255,.45), 0 10px 34px rgba(124,92,255,.32);
  --shadow-glow-soft:0 0 0 1px rgba(124,92,255,.30), 0 8px 26px rgba(124,92,255,.18);
  --shadow-glow-gold:0 0 0 1px rgba(255,198,97,.5), 0 10px 30px rgba(255,198,97,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  font-weight:400;
  color:var(--text-1);
  background-color:var(--ink-800);
  background-image:
    radial-gradient(1.6px 1.6px at 12% 18%, rgba(255,255,255,.55), transparent 60%),
    radial-gradient(1.6px 1.6px at 78% 30%, rgba(255,255,255,.40), transparent 60%),
    radial-gradient(1.4px 1.4px at 42% 66%, rgba(255,255,255,.34), transparent 60%),
    radial-gradient(1.4px 1.4px at 88% 84%, rgba(255,255,255,.30), transparent 60%),
    radial-gradient(900px 620px at 10% 2%, rgba(124,92,255,.14), transparent 62%),
    radial-gradient(760px 520px at 86% 12%, rgba(45,212,240,.09), transparent 64%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img{display:block;max-width:100%;border-radius:14px;border:1px solid var(--line-2);}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font:inherit;}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.28;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.mono{font-family:ui-monospace,"JetBrains Mono","SFMono-Regular",Consolas,monospace;font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.section-tight{padding:72px 0;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;letter-spacing:0;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .18s var(--ease),filter .18s var(--ease),box-shadow .2s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-gold{background:linear-gradient(135deg,#FFE0A3,#FFC661 46%,#F2A63A);color:#171226;font-weight:600;box-shadow:var(--shadow-glow-gold);}
.btn-gold:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(255,198,97,.62),0 14px 36px rgba(255,198,97,.36);}
.btn-gold:active{transform:translateY(1px);filter:brightness(.98);}
.btn-primary{background:linear-gradient(135deg,#8A6BFF,#6A4BEA 62%,#4F8FE0);color:#fff;font-weight:600;box-shadow:var(--shadow-glow);}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(124,92,255,.6),0 16px 40px rgba(124,92,255,.4);}
.btn-primary:active{transform:translateY(1px);background:var(--primary-700);}
.btn-ghost{background:transparent;border-color:var(--line-1);color:var(--text-1);}
.btn-ghost:hover{border-color:rgba(124,92,255,.6);background:rgba(124,92,255,.08);}
.btn-ghost:active{transform:translateY(1px);}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--secondary);transition:color .18s var(--ease);}
.link-arrow span{transition:transform .18s var(--ease);}
.link-arrow:hover{color:#8FEBFF;}
.link-arrow:hover span{transform:translateX(4px);}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--r-pill);font-size:12px;line-height:1.6;background:rgba(255,255,255,.07);border:1px solid var(--line-1);color:var(--secondary);backdrop-filter:blur(8px);}
.badge-gold{color:var(--accent);border-color:rgba(255,198,97,.32);background:rgba(255,198,97,.10);}

/* ---------- 顶栏 ---------- */
.site-header{position:sticky;top:0;z-index:60;}
.brand-row{background:rgba(10,14,34,.78);backdrop-filter:blur(22px) saturate(140%);border-bottom:1px solid var(--line-2);transition:background .22s var(--ease);}
.brand-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .22s var(--ease);}
.site-header.is-stuck .brand-inner{height:60px;}
.site-header.is-stuck .brand-row{background:rgba(10,14,34,.9);border-bottom-color:var(--line-1);}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--secondary));box-shadow:var(--shadow-glow-soft);flex-shrink:0;}
.brand-mark span{width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 12px rgba(255,255,255,.9);}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text b{font-size:16px;font-weight:600;letter-spacing:0;}
.brand-text small{font-size:12px;color:var(--text-3);}
.search{margin-left:auto;}
.search input{
  width:320px;height:44px;padding:0 16px;color:var(--text-1);
  background:var(--ink-600);border:1px solid var(--line-1);border-radius:var(--r-input);
  font-size:14px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search input::placeholder{color:var(--text-3);}
.search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px rgba(124,92,255,.28);}
.brand-actions{display:flex;align-items:center;gap:16px;flex-shrink:0;}
.link-help{font-size:14px;color:var(--text-2);transition:color .18s var(--ease);}
.link-help:hover{color:var(--text-1);}
.burger{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-1);place-items:center;flex-direction:column;justify-content:center;gap:5px;align-items:center;}
.burger i{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .2s var(--ease),opacity .2s var(--ease);}
body.nav-open .burger i:nth-child(1){transform:translateY(7px) rotate(45deg);}
body.nav-open .burger i:nth-child(2){opacity:0;}
body.nav-open .burger i:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.chan-row{background:rgba(10,14,34,.62);border-bottom:1px solid var(--line-1);}
.chan-inner{display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;scrollbar-width:none;}
.chan-inner::-webkit-scrollbar{display:none;}
.chan-link{position:relative;display:inline-flex;align-items:center;height:36px;padding:0 14px;border-radius:var(--r-pill);font-size:15px;color:var(--text-2);white-space:nowrap;transition:background-color .18s var(--ease),color .18s var(--ease);}
.chan-link:hover{background:rgba(255,255,255,.06);color:var(--text-1);}
.chan-link.active{color:var(--text-1);background:rgba(124,92,255,.12);}
.chan-link.active::after{content:"";position:absolute;left:12px;right:12px;bottom:-9px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 12px rgba(124,92,255,.9);}
.nav-mask{position:fixed;inset:0;background:rgba(5,6,15,.62);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:65;}
body.nav-open .nav-mask{opacity:1;visibility:visible;}

/* ---------- 面包屑 ---------- */
.crumb{padding:20px 0 0;font-size:13px;color:var(--text-3);}
.crumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--text-3);}
.crumb a{transition:color .18s var(--ease);}
.crumb a:hover{color:var(--text-1);}
.crumb .cur{color:var(--text-2);}

/* ---------- 头部（居中窄头型） ---------- */
.hero-cat1{padding:72px 0 0;text-align:center;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:var(--r-pill);font-size:12px;letter-spacing:.04em;color:var(--secondary);background:rgba(45,212,240,.08);border:1px solid rgba(45,212,240,.24);}
.hero-cat1 h1{margin-top:22px;font-size:48px;line-height:1.22;}
.hero-cat1 .hero-sub{max-width:720px;margin:18px auto 0;font-size:18px;line-height:1.8;color:var(--text-2);}
.hero-actions{display:flex;justify-content:center;gap:14px;margin-top:32px;flex-wrap:wrap;}
.metric-bar{display:grid;grid-template-columns:repeat(3,1fr);margin-top:56px;border-top:1px solid var(--line-1);border-bottom:1px solid var(--line-1);}
.metric{padding:30px 16px;border-left:1px solid var(--line-1);}
.metric:first-child{border-left:0;}
.metric b{display:block;font-size:44px;font-weight:700;line-height:1.1;color:var(--text-1);}
.metric b em{font-style:normal;font-size:20px;color:var(--text-2);margin-left:4px;}
.metric span{display:block;margin-top:8px;font-size:14px;color:var(--text-2);}

/* ---------- 交替图文 ---------- */
.split{display:grid;grid-template-columns:1fr 1.05fr;gap:64px;align-items:center;}
.split-media img{width:100%;aspect-ratio:3/2;object-fit:cover;box-shadow:var(--shadow-2);}
.split.reverse .split-media{order:2;}
.split-text h2{font-size:32px;margin-bottom:20px;position:relative;padding-left:18px;}
.split-text h2::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;background:linear-gradient(180deg,var(--primary),rgba(45,212,240,.5));box-shadow:0 0 14px rgba(124,92,255,.7);}
.split-text p{font-size:16px;line-height:1.9;color:var(--text-2);margin-bottom:16px;}
.split-text p:last-of-type{margin-bottom:22px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px;}
.section-head{max-width:760px;margin:0 auto 48px;text-align:center;}
.section-head h2{font-size:32px;}
.section-head p{margin-top:14px;font-size:16px;color:var(--text-2);}
.kicker{font-size:13px;letter-spacing:.08em;color:var(--secondary);}
.kicker::before{content:"✦";margin-right:8px;color:var(--primary);}

/* ---------- 步骤轴 ---------- */
.steps{position:relative;max-width:900px;margin:0 auto;padding-left:42px;display:grid;gap:18px;}
.steps::before{content:"";position:absolute;left:14px;top:14px;bottom:14px;width:1px;background:linear-gradient(180deg,transparent,rgba(124,92,255,.6),rgba(45,212,240,.35),transparent);}
.step{position:relative;padding:22px 26px;background:var(--ink-600);border:1px solid var(--line-2);border-radius:var(--r-card);transition:border-color .22s var(--ease),transform .22s var(--ease);}
.step:hover{border-color:rgba(124,92,255,.45);transform:translateY(-2px);}
.step::before{content:"";position:absolute;left:-35px;top:34px;width:9px;height:9px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px rgba(124,92,255,.16);}
.step h3{font-size:19px;display:flex;align-items:center;gap:10px;}
.step h3 .num{font-size:13px;color:var(--secondary);}
.step p{margin-top:8px;font-size:15px;line-height:1.85;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto;}
.faq{background:var(--ink-600);border:1px solid var(--line-2);border-radius:var(--r-card);overflow:hidden;transition:border-color .22s var(--ease);}
.faq[open]{border-color:rgba(124,92,255,.45);}
.faq summary{display:flex;align-items:center;gap:14px;min-height:64px;padding:14px 24px;list-style:none;cursor:pointer;font-size:16px;font-weight:500;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary .mark{color:var(--primary);font-size:13px;}
.faq .ico{margin-left:auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line-1);display:grid;place-items:center;font-size:16px;line-height:1;color:var(--text-2);transition:transform .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);}
.faq[open] .ico{transform:rotate(45deg);color:var(--primary);border-color:rgba(124,92,255,.5);}
.faq .faq-body{padding:0 24px 22px 56px;font-size:15px;line-height:1.85;color:var(--text-2);}

/* ---------- 相关资讯 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{display:flex;flex-direction:column;background:var(--ink-600);border:1px solid var(--line-2);border-radius:var(--r-card);overflow:hidden;transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);}
.news-card:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.45);box-shadow:var(--shadow-glow-soft);}
.news-card .thumb{position:relative;}
.news-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border:0;border-radius:0;}
.news-card .thumb .badge{position:absolute;left:12px;top:12px;}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{font-size:18px;line-height:1.5;}
.news-body p{font-size:14px;line-height:1.7;color:var(--text-2);}
.news-meta{margin-top:auto;display:flex;align-items:center;gap:12px;padding-top:12px;border-top:1px solid var(--line-2);font-size:12px;color:var(--text-3);}

/* ---------- 通栏 CTA ---------- */
.cta-band{background:var(--ink-900);border-top:1px solid var(--line-1);border-bottom:1px solid var(--line-1);padding:56px 0;position:relative;overflow:hidden;}
.cta-band::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(124,92,255,.8),rgba(45,212,240,.5),transparent);}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:28px;line-height:1.4;max-width:640px;}
.cta-inner p{margin-top:10px;font-size:15px;color:var(--text-2);}
.support-line{margin-top:18px;font-size:13px;color:var(--text-3);}
.support-line b{color:var(--text-2);font-weight:500;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);position:relative;border-top:1px solid var(--line-1);}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(124,92,255,.7),transparent);}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.2fr;gap:32px;padding:72px 0 44px;}
.foot-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--text-2);max-width:320px;}
.contact-line{margin-top:16px;font-size:13px;color:var(--text-3);}
.contact-line b{color:var(--text-1);font-size:15px;margin-left:6px;}
.qr{margin-top:16px;width:96px;height:96px;border-radius:14px;display:grid;place-items:center;text-align:center;font-size:11px;line-height:1.6;color:var(--text-3);background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.025));border:1px solid var(--line-1);}
.foot-col h4,.foot-login h4{font-size:15px;margin-bottom:16px;}
.foot-col a{position:relative;display:block;padding:6px 0;font-size:14px;color:var(--text-2);transition:color .18s var(--ease),padding-left .18s var(--ease);}
.foot-col a::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:2px;height:0;border-radius:2px;background:var(--primary);transition:height .2s var(--ease);}
.foot-col a:hover{color:var(--text-1);padding-left:10px;}
.foot-col a:hover::before{height:14px;}
.foot-login{background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.025));border:1px solid var(--line-1);border-radius:var(--r-card);padding:22px;backdrop-filter:blur(16px) saturate(140%);}
.foot-login p{font-size:13px;line-height:1.7;color:var(--text-2);margin-bottom:16px;}
.copy{display:flex;flex-wrap:wrap;gap:20px;align-items:center;border-top:1px solid var(--line-2);padding:20px 0 34px;font-size:12px;color:var(--text-3);}
.copy a:hover{color:var(--text-1);}

/* ---------- 移动吸底条 ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;gap:12px;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:rgba(10,14,34,.94);backdrop-filter:blur(18px);border-top:1px solid var(--line-1);
  opacity:0;transform:translateY(100%);transition:opacity .28s var(--ease),transform .28s var(--ease);
}
.mobile-bar.show{opacity:1;transform:none;}
.mobile-bar .btn{flex:1;}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .hero-cat1 h1{font-size:44px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split.reverse .split-media{order:0;}
  .foot-grid{grid-template-columns:1fr 1fr 1fr;gap:28px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .search input{width:220px;}
}
@media (max-width:960px){
  .burger{display:flex;}
  .search{display:none;}
  .link-help{display:none;}
  .chan-row{
    position:fixed;top:0;right:0;height:100vh;width:82vw;max-width:360px;z-index:80;
    background:rgba(10,14,34,.96);backdrop-filter:blur(22px) saturate(140%);
    border-left:1px solid var(--line-1);border-bottom:0;
    transform:translateX(102%);transition:transform .28s var(--ease);
    padding:24px 20px;overflow-y:auto;
  }
  body.nav-open .chan-row{transform:none;}
  .chan-inner{flex-direction:column;align-items:stretch;height:auto;gap:6px;overflow:visible;}
  .chan-link{height:52px;justify-content:space-between;border-radius:12px;font-size:16px;padding:0 16px;}
  .chan-link::after{content:"›";position:absolute;right:16px;color:var(--text-3);}
  .chan-link.active::after{content:"›";left:auto;right:16px;bottom:auto;top:50%;transform:translateY(-50%);height:auto;width:auto;background:none;box-shadow:none;color:var(--primary);font-size:18px;}
  .step::before{left:-33px;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .hero-cat1{padding:44px 0 0;}
  .hero-cat1 h1{font-size:30px;}
  .hero-cat1 .hero-sub{font-size:15.5px;}
  .metric-bar{grid-template-columns:1fr;margin-top:36px;}
  .metric{border-left:0;border-top:1px solid var(--line-1);padding:20px 4px;text-align:left;}
  .metric:first-child{border-top:0;}
  .metric b{font-size:30px;}
  .metric b em{font-size:16px;}
  .split-text h2{font-size:24px;}
  .section-head h2{font-size:24px;}
  .news-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;padding:48px 0 32px;}
  .foot-brand,.foot-login{grid-column:1 / -1;}
  .steps{padding-left:32px;}
  .steps::before{left:8px;}
  .step::before{left:-28px;top:30px;}
  .faq summary{font-size:15px;padding:14px 18px;}
  .faq .faq-body{padding:0 18px 20px 18px;}
  .cta-inner h2{font-size:22px;}
  .cta-inner .btn{width:100%;}
  .mobile-bar{display:flex;}
  .copy{gap:12px;font-size:12px;}
  body{padding-bottom:76px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .brand-text b{font-size:15px;}
  .brand-text small{display:none;}
  .hero-cat1 h1{font-size:27px;}
  .hero-actions .btn{width:100%;}
  .foot-grid{grid-template-columns:1fr;}
  .metric b{font-size:28px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --ink-900:#05060F;--ink-800:#0A0E22;--ink-700:#111634;--ink-600:#1A2044;
  --line-1:rgba(255,255,255,.10);--line-2:rgba(255,255,255,.06);
  --primary:#7C5CFF;--primary-700:#5B3FE0;--secondary:#2DD4F0;--accent:#FFC661;
  --success:#34D399;--warning:#F5A524;--error:#FB7185;
  --text-1:#EEF1FF;--text-2:#A9B3D6;--text-3:#6C7799;
  --r-card:16px;--r-lg:24px;--r-btn:999px;--r-input:10px;--r-img:14px;
  --shadow-1:0 6px 20px rgba(3,6,24,.55);
  --shadow-2:0 18px 48px rgba(3,6,24,.65);
  --shadow-glow:0 0 0 1px rgba(124,92,255,.45),0 10px 34px rgba(124,92,255,.32);
  --shadow-glow-gold:0 0 0 1px rgba(255,198,97,.5),0 10px 30px rgba(255,198,97,.28);
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.9;color:var(--text-1);
  background-color:var(--ink-800);
  background-image:
    radial-gradient(900px 520px at 10% -6%,rgba(124,92,255,.20),transparent 62%),
    radial-gradient(720px 480px at 90% 6%,rgba(45,212,240,.10),transparent 64%),
    radial-gradient(1.4px 1.4px at 18% 22%,rgba(255,255,255,.55),transparent 100%),
    radial-gradient(1.2px 1.2px at 62% 58%,rgba(255,255,255,.42),transparent 100%),
    radial-gradient(1.6px 1.6px at 84% 32%,rgba(255,255,255,.36),transparent 100%),
    linear-gradient(rgba(255,255,255,.032) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.032) 1px,transparent 1px);
  background-size:auto,auto,420px 380px,320px 300px,260px 240px,24px 24px,24px 24px;
  background-position:0 0,0 0,0 0,120px 60px,60px 140px,0 0,0 0;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .15s var(--ease),border-color .15s var(--ease),background-color .15s var(--ease)}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:600;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:inherit;color:var(--text-1)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:120;background:rgba(10,14,34,.72);backdrop-filter:blur(22px) saturate(140%);-webkit-backdrop-filter:blur(22px) saturate(140%);border-bottom:1px solid var(--line-1)}
.brand-row{border-bottom:1px solid var(--line-2)}
.brand-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .22s var(--ease)}
.site-header.is-shrink .brand-inner{height:60px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{flex:0 0 auto;width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--secondary));display:grid;place-items:center;box-shadow:var(--shadow-glow)}
.brand-mark span{width:12px;height:12px;background:#fff;clip-path:polygon(50% 0,61% 39%,100% 50%,61% 61%,50% 100%,39% 61%,0 50%,39% 39%)}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text b{font-size:17px;font-weight:600;line-height:1.3;white-space:nowrap}
.brand-text small{font-size:12px;color:var(--text-3);line-height:1.4;white-space:nowrap}
.search{position:relative;flex:1 1 auto;max-width:320px}
.search input{width:100%;height:40px;padding:0 14px 0 38px;border-radius:var(--r-input);border:1px solid var(--line-1);background:var(--ink-600);color:var(--text-1);font-size:14px;outline:none;transition:border-color .15s var(--ease),box-shadow .15s var(--ease)}
.search input::placeholder{color:var(--text-3)}
.search input:focus{border-color:var(--primary);box-shadow:0 0 0 2px rgba(124,92,255,.28)}
.search::before{content:"";position:absolute;left:13px;top:50%;width:14px;height:14px;margin-top:-8px;border:1.6px solid var(--text-3);border-radius:50%}
.search::after{content:"";position:absolute;left:24px;top:50%;width:6px;height:1.6px;background:var(--text-3);transform:rotate(45deg);margin-top:3px}
.brand-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.link-help{font-size:14px;color:var(--text-2)}
.link-help:hover{color:var(--text-1)}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line-1);border-radius:12px;background:rgba(255,255,255,.04);flex-direction:column;justify-content:center;align-items:center;gap:4px}
.burger i{display:block;width:18px;height:1.8px;background:var(--text-1);border-radius:2px;transition:transform .2s var(--ease)}
.search-toggle{display:none;width:40px;height:40px;border-radius:50%;border:1px solid var(--line-1);background:rgba(255,255,255,.04);color:var(--text-1);align-items:center;justify-content:center;font-size:15px}
.chan-row{background:rgba(5,6,15,.35)}
.chan-inner{display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;scrollbar-width:none}
.chan-inner::-webkit-scrollbar{display:none}
.chan-link{position:relative;display:inline-flex;align-items:center;height:36px;padding:0 14px;font-size:15px;color:var(--text-2);border-radius:999px;white-space:nowrap;transition:background-color .15s var(--ease),color .15s var(--ease)}
.chan-link:hover{background:rgba(255,255,255,.06);color:var(--text-1)}
.chan-link.active{color:var(--text-1);background:rgba(124,92,255,.12)}
.chan-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(124,92,255,.85)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border:0;border-radius:var(--r-btn);font-size:15px;font-weight:500;cursor:pointer;transition:transform .15s var(--ease),filter .15s var(--ease),box-shadow .15s var(--ease),border-color .15s var(--ease),background-color .15s var(--ease);text-align:center}
.btn-sm{height:44px;padding:0 20px;font-size:14px}
.btn-gold{color:#231703;background:linear-gradient(135deg,#FFD98A,var(--accent));box-shadow:var(--shadow-glow-gold)}
.btn-gold:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(255,198,97,.6),0 12px 36px rgba(255,198,97,.36)}
.btn-gold:active{transform:translateY(1px)}
.btn-primary{color:#fff;background:linear-gradient(135deg,var(--primary),var(--secondary));box-shadow:var(--shadow-glow)}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(124,92,255,.55),0 12px 40px rgba(124,92,255,.4)}
.btn-ghost{color:var(--text-1);background:transparent;border:1px solid var(--line-1)}
.btn-ghost:hover{border-color:var(--primary);box-shadow:0 0 0 1px rgba(124,92,255,.35)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--secondary);font-size:14px}
.link-more::after{content:"→";transition:transform .15s var(--ease)}
.link-more:hover::after{transform:translateX(4px)}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:200;background:rgba(5,6,15,.6);opacity:0;pointer-events:none;transition:opacity .22s var(--ease)}
.drawer.open{opacity:1;pointer-events:auto}
.drawer-panel{position:absolute;top:0;right:0;width:82vw;max-width:360px;height:100%;padding:20px;background:rgba(10,14,34,.94);backdrop-filter:blur(22px);border-left:1px solid var(--line-1);display:flex;flex-direction:column;gap:6px;transform:translateX(100%);transition:transform .24s var(--ease);overflow-y:auto}
.drawer.open .drawer-panel{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.drawer-close{width:40px;height:40px;border-radius:50%;border:1px solid var(--line-1);background:rgba(255,255,255,.04);color:var(--text-1);font-size:18px;line-height:1}
.drawer-link{display:flex;align-items:center;justify-content:space-between;height:52px;padding:0 14px;border-radius:12px;font-size:16px;color:var(--text-1);border-bottom:1px solid var(--line-2)}
.drawer-link::after{content:"›";color:var(--text-3)}
.drawer-link:hover{background:rgba(255,255,255,.06)}
.drawer-link.active{background:rgba(124,92,255,.14);color:#fff}
.drawer-foot{margin-top:auto;padding-top:16px}

/* ---------- breadcrumbs ---------- */
.crumbs{padding:22px 0 8px;font-size:13px;color:var(--text-3)}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--text-1)}
.crumbs span.sep{margin:0 8px;color:rgba(255,255,255,.2)}
.crumbs .now{color:var(--text-2)}

/* ---------- article ---------- */
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 328px;gap:56px;padding:16px 32px 0;max-width:1200px;margin:0 auto}
.article-head{padding-top:8px}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;line-height:1;border:1px solid var(--line-1);background:rgba(255,255,255,.05);color:var(--secondary)}
.badge-gold{color:var(--accent);border-color:rgba(255,198,97,.32)}
.article-head h1{font-size:32px;line-height:1.34;margin:18px 0 0;max-width:820px;word-break:break-word}
.meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:16px;font-size:12px;color:var(--text-3)}
.meta i{display:inline-block;width:1px;height:12px;background:var(--line-1)}
.star-line{height:1px;margin:24px 0 0;background:linear-gradient(90deg,rgba(124,92,255,.85),rgba(45,212,240,.35),transparent 70%)}
.article-body{max-width:820px;padding:32px 0 8px;font-size:17px;line-height:1.95;color:var(--text-1);word-break:break-word}
.article-body>*+*{margin-top:1.3em}
.article-body p{color:var(--text-1)}
.article-body h2{position:relative;font-size:26px;line-height:1.35;margin-top:48px;padding-left:16px}
.article-body h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;background:var(--primary);box-shadow:0 0 12px rgba(124,92,255,.7)}
.article-body h3{position:relative;font-size:22px;margin-top:32px;padding-left:18px}
.article-body h3::before{content:"";position:absolute;left:0;top:.42em;width:6px;height:6px;border-radius:2px;background:var(--secondary)}
.article-body a{color:var(--secondary);border-bottom:1px solid rgba(45,212,240,.35)}
.article-body a:hover{color:#7FE6FA}
.article-body ul,.article-body ol{padding-left:2px}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-top:10px;color:var(--text-2);font-size:16px;line-height:1.9}
.article-body ul li::before{content:"";position:absolute;left:4px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--secondary);box-shadow:0 0 8px rgba(45,212,240,.6)}
.article-body ol{counter-reset:li}
.article-body ol li{padding-left:30px}
.article-body ol li::before{counter-increment:li;content:counter(li);position:absolute;left:0;top:.28em;width:20px;height:20px;border-radius:6px;background:rgba(124,92,255,.16);color:var(--text-1);font-family:var(--mono);font-size:12px;line-height:20px;text-align:center}
.article-body blockquote{margin-left:0;margin-right:0;padding:16px 20px;border-left:3px solid var(--primary);border-radius:0 12px 12px 0;background:rgba(124,92,255,.06);color:var(--text-2);box-shadow:0 0 18px rgba(124,92,255,.12)}
.article-body code{padding:2px 6px;border-radius:6px;background:var(--ink-600);border:1px solid var(--line-2);font-family:var(--mono);font-size:14px}
.article-body pre{padding:18px;border-radius:12px;background:var(--ink-600);border:1px solid var(--line-1);overflow-x:auto}
.article-body pre code{padding:0;border:0;background:none;font-size:14px;line-height:1.7}
.article-body img{border-radius:var(--r-img);border:1px solid var(--line-2);margin-top:1.2em}
.article-body figure{margin:1.4em 0 0}
.article-body figcaption{text-align:center;font-size:12px;color:var(--text-3);margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;border:1px solid var(--line-1);border-radius:12px;overflow:hidden;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line-2);text-align:left}
.article-body th{background:var(--ink-700);font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.article-body hr{border:0;height:1px;background:var(--line-1)}

.empty-state{min-height:320px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:10px;padding:48px 20px;border:1px dashed var(--line-1);border-radius:var(--r-card);background:rgba(26,32,68,.4)}
.empty-state svg{width:48px;height:48px;stroke:var(--text-3);fill:none;stroke-width:1.4}
.empty-title{font-size:17px;font-weight:600;color:var(--text-1)}
.empty-sub{font-size:13px;color:var(--text-3);max-width:420px;line-height:1.8}

/* tags / actions / prevnext */
.article-foot{max-width:820px}
.tag-line{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;font-size:13px;color:var(--text-2);border:1px solid var(--line-1);background:rgba(255,255,255,.04)}
.tag:hover{color:#fff;border-color:rgba(124,92,255,.5);background:rgba(124,92,255,.14)}
.action-line{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;padding-top:24px;border-top:1px solid var(--line-2)}
.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px}
.pn-card{display:block;padding:22px;border-radius:var(--r-card);border:1px solid var(--line-1);background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.025));box-shadow:var(--shadow-1);transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)}
.pn-card:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.45);box-shadow:var(--shadow-glow)}
.pn-card small{display:block;font-size:12px;color:var(--text-3);letter-spacing:.04em}
.pn-card b{display:block;margin-top:8px;font-size:16px;font-weight:600;line-height:1.5}
.pn-card.right{text-align:right}

/* sidebar */
.article-side{position:sticky;top:96px;align-self:start;padding-top:32px;display:flex;flex-direction:column;gap:20px}
.side-card{padding:22px;border-radius:var(--r-card);border:1px solid var(--line-1);background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.025));backdrop-filter:blur(16px) saturate(140%);box-shadow:var(--shadow-1)}
.side-card.login{position:relative;overflow:hidden;box-shadow:var(--shadow-glow)}
.side-card.login::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary),transparent)}
.side-card h3{font-size:15px;font-weight:600;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"✦";color:var(--accent);font-size:12px}
.side-card p{font-size:13px;color:var(--text-2);line-height:1.8;margin-top:10px}
.side-card .btn{width:100%;margin-top:16px}
.side-list{margin-top:14px;display:flex;flex-direction:column;gap:2px}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:44px;padding:8px 10px;border-radius:10px;font-size:14px;color:var(--text-2);background:var(--ink-600);border:1px solid var(--line-2)}
.side-list a:hover{color:#fff;border-color:rgba(124,92,255,.45);background:rgba(124,92,255,.12)}
.side-list a span{font-size:12px;color:var(--text-3)}
.side-note{margin-top:14px;font-size:12px;color:var(--text-3);line-height:1.8}

/* related */
.related{padding:72px 0 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.sec-head h2{font-size:28px}
.sec-head p{font-size:14px;color:var(--text-2);margin-top:8px}
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{display:flex;flex-direction:column;border-radius:var(--r-card);border:1px solid var(--line-1);background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.025));backdrop-filter:blur(16px) saturate(140%);box-shadow:var(--shadow-1);overflow:hidden;transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)}
.card:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.45);box-shadow:var(--shadow-glow)}
.card-thumb{position:relative;aspect-ratio:16/10;background:var(--ink-600)}
.card-thumb img{width:100%;height:100%;object-fit:cover}
.card-thumb .badge{position:absolute;left:12px;top:12px;background:rgba(10,14,34,.72);backdrop-filter:blur(10px)}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;line-height:1.5}
.card-body p{font-size:14px;color:var(--text-2);line-height:1.7}
.card-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--line-2);display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-3)}
.card-meta a{color:var(--secondary)}

/* faq */
.faq-sec{padding:80px 0 0}
.faq-list{margin-top:8px;border-top:1px solid var(--line-2)}
.faq-item{border-bottom:1px solid var(--line-2)}
.faq-q{width:100%;display:flex;align-items:center;gap:14px;min-height:56px;padding:14px 4px;background:none;border:0;color:var(--text-1);font-size:16px;font-weight:500;text-align:left}
.faq-q .idx{font-family:var(--mono);font-size:12px;color:var(--accent);flex:0 0 auto}
.faq-q .ico{margin-left:auto;width:20px;height:20px;flex:0 0 auto;position:relative;transition:transform .2s var(--ease)}
.faq-q .ico::before,.faq-q .ico::after{content:"";position:absolute;left:50%;top:50%;background:var(--text-2);border-radius:2px;transform:translate(-50%,-50%)}
.faq-q .ico::before{width:12px;height:1.6px}
.faq-q .ico::after{width:1.6px;height:12px;transition:transform .2s var(--ease)}
.faq-item.open .faq-q .ico::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-a{display:none;padding:0 0 20px 40px;font-size:15px;line-height:1.85;color:var(--text-2)}
.faq-item.open .faq-a{display:block}

/* cta band */
.cta-band{margin-top:88px;background:var(--ink-900);border-top:1px solid var(--line-1);border-bottom:1px solid var(--line-1);position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(124,92,255,.7),transparent)}
.cta-band::after{content:"";position:absolute;inset:0;background:radial-gradient(600px 260px at 12% 0%,rgba(124,92,255,.22),transparent 70%);pointer-events:none}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:56px 0}
.cta-inner h2{font-size:28px}
.cta-inner p{font-size:14px;color:var(--text-2);margin-top:10px;max-width:560px}

/* footer */
.site-footer{margin-top:0;background:var(--ink-900);position:relative;padding:64px 0 28px}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.16),transparent)}
.site-footer::after{content:"";position:absolute;inset:0;background:radial-gradient(520px 220px at 88% 0%,rgba(124,92,255,.16),transparent 70%);pointer-events:none}
.site-footer .container{position:relative;z-index:1}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.2fr;gap:32px}
.foot-brand p{font-size:13px;color:var(--text-2);line-height:1.85;margin-top:14px;max-width:300px}
.contact-line{margin-top:16px;font-size:13px;color:var(--text-3)}
.contact-line b{color:var(--text-1);margin-left:6px}
.qr{margin-top:16px;width:96px;height:96px;border-radius:12px;border:1px solid var(--line-1);background:rgba(255,255,255,.04);display:grid;place-items:center;text-align:center;font-size:12px;color:var(--text-3);line-height:1.6}
.foot-col h4,.foot-login h4{font-size:14px;font-weight:600;margin-bottom:14px;color:var(--text-1)}
.foot-col a{position:relative;display:block;font-size:13px;color:var(--text-3);padding:6px 0 6px 10px;line-height:1.7}
.foot-col a::before{content:"";position:absolute;left:0;top:50%;width:2px;height:0;border-radius:2px;background:var(--primary);transform:translateY(-50%);transition:height .15s var(--ease)}
.foot-col a:hover{color:var(--text-1)}
.foot-col a:hover::before{height:14px}
.foot-login{padding:20px;border-radius:var(--r-card);border:1px solid var(--line-1);background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.02));box-shadow:var(--shadow-1)}
.foot-login p{font-size:13px;color:var(--text-2);line-height:1.8;margin-bottom:16px}
.copy{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:48px;padding-top:20px;border-top:1px solid var(--line-2);font-size:12px;color:var(--text-3)}
.copy a{color:var(--text-3)}
.copy a:hover{color:var(--text-1)}

/* mobile bar */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:130;display:none;gap:12px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(10,14,34,.86);backdrop-filter:blur(22px);border-top:1px solid var(--line-1);opacity:0;transform:translateY(100%);transition:opacity .3s var(--ease),transform .3s var(--ease)}
.mobile-bar.show{opacity:1;transform:none}
.mobile-bar .btn{flex:1}

/* toast */
.toast{position:fixed;left:50%;bottom:88px;transform:translate(-50%,16px);z-index:300;padding:12px 20px;border-radius:12px;font-size:14px;color:var(--text-1);background:rgba(10,14,34,.92);border:1px solid rgba(124,92,255,.45);box-shadow:var(--shadow-2);opacity:0;pointer-events:none;transition:opacity .2s var(--ease),transform .2s var(--ease)}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* responsive */
@media (max-width:1279px){
  .article-wrap{grid-template-columns:minmax(0,1fr) 300px;gap:40px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .article-wrap{grid-template-columns:1fr;gap:0;padding:16px 24px 0}
  .article-side{position:static;padding-top:40px}
  .cards-3{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .foot-brand{grid-column:1/-1}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .article-wrap{padding:12px 16px 0}
  .brand-inner{height:64px;gap:12px}
  .brand-text small{display:none}
  .link-help{display:none}
  .search{display:none;position:absolute;left:16px;right:16px;top:66px;max-width:none;z-index:5}
  .search-toggle{display:inline-flex}
  .site-header.search-open .search{display:block}
  .site-header.search-open .brand-row{padding-bottom:60px}
  .burger{display:flex}
  .chan-inner{height:48px;padding:0 16px;mask-image:linear-gradient(90deg,transparent,#000 16px,#000 calc(100% - 24px),transparent)}
  .chan-link{height:32px;font-size:14px;padding:0 12px}
  .article-head h1{font-size:24px}
  .article-body{font-size:16px;line-height:1.9;padding-top:24px}
  .article-body h2{font-size:22px;margin-top:36px}
  .article-body h3{font-size:19px}
  .prevnext{grid-template-columns:1fr}
  .pn-card.right{text-align:left}
  .cards-3{grid-template-columns:1fr}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .sec-head h2{font-size:22px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:44px 0}
  .cta-inner h2{font-size:22px}
  .mobile-bar{display:flex}
  .faq-q{font-size:15px}
  .faq-a{padding-left:30px}
}
@media (max-width:519px){
  .btn{width:100%}
  .brand-actions .btn-sm{width:auto}
  .meta{gap:8px}
  .copy{gap:10px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --ink-900:#05060F;
  --ink-800:#0A0E22;
  --ink-700:#111634;
  --ink-600:#1A2044;
  --line-1:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.06);
  --primary:#7C5CFF;
  --primary-700:#5B3FE0;
  --secondary:#2DD4F0;
  --accent:#FFC661;
  --success:#34D399;
  --warning:#F5A524;
  --error:#FB7185;
  --text-1:#EEF1FF;
  --text-2:#A9B3D6;
  --text-3:#6C7799;
  --r-card:16px;
  --r-lg:24px;
  --r-btn:999px;
  --r-input:10px;
  --shadow-1:0 6px 20px rgba(3,6,24,.55);
  --shadow-2:0 18px 48px rgba(3,6,24,.65);
  --shadow-glow:0 0 0 1px rgba(124,92,255,.45),0 10px 34px rgba(124,92,255,.32);
  --shadow-glow-gold:0 0 0 1px rgba(255,198,97,.5),0 10px 30px rgba(255,198,97,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--text-1);
  background:var(--ink-800);
  background-image:
    radial-gradient(900px 520px at 8% -6%,rgba(124,92,255,.16),transparent 62%),
    radial-gradient(760px 480px at 96% 4%,rgba(45,212,240,.10),transparent 60%),
    radial-gradient(1.6px 1.6px at 18% 24%,rgba(255,255,255,.55),transparent 100%),
    radial-gradient(1.4px 1.4px at 62% 12%,rgba(255,255,255,.42),transparent 100%),
    radial-gradient(1.2px 1.2px at 84% 38%,rgba(255,255,255,.36),transparent 100%),
    radial-gradient(1.5px 1.5px at 34% 62%,rgba(255,255,255,.30),transparent 100%),
    radial-gradient(1.2px 1.2px at 72% 78%,rgba(255,255,255,.26),transparent 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:14px}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.28;letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border:0;border-radius:var(--r-btn);
  font-weight:500;font-size:15px;cursor:pointer;white-space:nowrap;
  transition:transform .15s var(--ease),box-shadow .2s var(--ease),filter .15s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#080B1C;box-shadow:var(--shadow-glow);font-weight:600}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(124,92,255,.5),0 14px 40px rgba(124,92,255,.42)}
.btn-primary:active{transform:translateY(1px);background:var(--primary-700);color:#fff}
.btn-gold{background:linear-gradient(135deg,#FFD98A,var(--accent));color:#2A1C00;font-weight:600;box-shadow:var(--shadow-glow-gold)}
.btn-gold:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(255,198,97,.6),0 14px 36px rgba(255,198,97,.36)}
.btn-gold:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border:1px solid var(--line-1);color:var(--text-1)}
.btn-ghost:hover{border-color:rgba(124,92,255,.55);background:rgba(124,92,255,.08)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--secondary);font-size:14px;font-weight:500;transition:gap .18s var(--ease),color .18s var(--ease)}
.btn-link::after{content:"→";transition:transform .18s var(--ease)}
.btn-link:hover{color:#7FE7FA}
.btn-link:hover::after{transform:translateX(4px)}

/* ============ 徽章 / 标签 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:12px;line-height:1.6;background:rgba(255,255,255,.06);border:1px solid var(--line-1);color:var(--secondary)}
.badge-gold{color:var(--accent);border-color:rgba(255,198,97,.35);background:rgba(255,198,97,.08)}
.tag{display:inline-flex;align-items:center;padding:7px 14px;border-radius:999px;font-size:13px;color:var(--text-2);background:rgba(255,255,255,.045);border:1px solid var(--line-2);transition:all .18s var(--ease)}
.tag:hover{color:var(--text-1);border-color:rgba(124,92,255,.5);background:rgba(124,92,255,.12)}

/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:60;transition:background-color .25s var(--ease),backdrop-filter .25s var(--ease)}
.brand-row{border-bottom:1px solid var(--line-2);background:rgba(10,14,34,.72);backdrop-filter:blur(22px) saturate(140%)}
.brand-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .25s var(--ease)}
.site-header.is-stuck .brand-inner{height:60px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(140deg,rgba(124,92,255,.9),rgba(45,212,240,.6));box-shadow:0 6px 18px rgba(124,92,255,.35)}
.brand-mark span{width:12px;height:12px;background:#fff;clip-path:polygon(50% 0%,61% 39%,100% 50%,61% 61%,50% 100%,39% 61%,0% 50%,39% 39%);opacity:.95}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text b{font-size:16px;font-weight:600;letter-spacing:0}
.brand-text small{font-size:11.5px;color:var(--text-3)}
.search{flex:1 1 auto;max-width:320px;margin-left:auto}
.search input{
  width:100%;height:44px;padding:0 16px;border-radius:var(--r-input);
  background:var(--ink-600);border:1px solid var(--line-1);color:var(--text-1);font-size:14px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search input::placeholder{color:var(--text-3)}
.search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px rgba(124,92,255,.28)}
.brand-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.link-help{font-size:14px;color:var(--text-2);transition:color .18s var(--ease)}
.link-help:hover{color:var(--text-1)}
.burger{display:none;width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid var(--line-1);cursor:pointer;padding:0;place-items:center;gap:5px}
.burger i{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px}

.chan-row{border-bottom:1px solid var(--line-2);background:rgba(8,11,28,.62);backdrop-filter:blur(22px)}
.chan-inner{display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;scrollbar-width:none}
.chan-inner::-webkit-scrollbar{display:none}
.chan-link{position:relative;display:inline-flex;align-items:center;height:36px;padding:0 14px;border-radius:10px;font-size:14px;color:var(--text-2);white-space:nowrap;transition:color .18s var(--ease),background-color .18s var(--ease)}
.chan-link:hover{color:var(--text-1);background:rgba(255,255,255,.06)}
.chan-link.active{color:var(--text-1);background:rgba(124,92,255,.12)}
.chan-link.active::after{content:"";position:absolute;left:12px;right:12px;bottom:-9px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(124,92,255,.9)}

/* 抽屉 */
.drawer{position:fixed;inset:0 0 0 auto;width:82vw;max-width:360px;background:rgba(10,14,34,.94);backdrop-filter:blur(22px);border-left:1px solid var(--line-1);transform:translateX(102%);transition:transform .3s var(--ease);z-index:90;display:flex;flex-direction:column;padding:20px;gap:6px}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.drawer-close{width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.06);border:1px solid var(--line-1);color:var(--text-1);cursor:pointer;font-size:18px}
.drawer a.drawer-link{display:flex;align-items:center;justify-content:space-between;height:52px;padding:0 14px;border-radius:12px;color:var(--text-1);font-size:16px;border:1px solid transparent}
.drawer a.drawer-link:hover{background:rgba(255,255,255,.06);border-color:var(--line-1)}
.drawer a.drawer-link.active{background:rgba(124,92,255,.14);border-color:rgba(124,92,255,.4)}
.drawer-foot{margin-top:auto;padding-top:16px}
.scrim{position:fixed;inset:0;background:rgba(3,5,16,.6);opacity:0;pointer-events:none;transition:opacity .3s var(--ease);z-index:80}
.scrim.show{opacity:1;pointer-events:auto}

/* ============ 面包屑 ============ */
.crumb{padding:20px 0 0;font-size:13px;color:var(--text-3)}
.crumb a{color:var(--text-3);transition:color .18s var(--ease)}
.crumb a:hover{color:var(--text-1)}
.crumb span.sep{margin:0 8px;opacity:.6}
.crumb strong{color:var(--text-2);font-weight:400}

/* ============ Hero（左文右图） ============ */
.hero{padding:36px 0 72px}
.hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:18px}
.hero h1{font-size:48px;font-weight:600;margin-bottom:18px}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:17px;color:var(--text-2);line-height:1.85;max-width:520px}
.point-list{margin:22px 0 30px;display:grid;gap:10px}
.point-list li{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--text-2)}
.point-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--secondary);box-shadow:0 0 8px rgba(45,212,240,.8);flex:0 0 auto}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;border:1px solid rgba(124,92,255,.35);box-shadow:var(--shadow-2),0 0 0 1px rgba(124,92,255,.18)}
.hero-media::after{content:"";position:absolute;inset:auto 24px -22px 24px;height:1px;background:linear-gradient(90deg,transparent,rgba(124,92,255,.75),transparent)}
.hero-media .float-card{
  position:absolute;left:20px;bottom:20px;padding:14px 18px;border-radius:14px;
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.03));
  border:1px solid var(--line-1);backdrop-filter:blur(16px) saturate(140%);
  display:flex;flex-direction:column;gap:2px;
}
.hero-media .float-card b{font-family:var(--mono);font-size:22px;font-weight:700;color:var(--accent)}
.hero-media .float-card small{font-size:12px;color:var(--text-2)}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-dark{background:var(--ink-900);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.section-alt{background:var(--ink-700)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:32px}
.section-head p{font-size:15px;color:var(--text-2);max-width:520px}
.section-kicker{font-size:13px;color:var(--secondary);letter-spacing:.08em;margin-bottom:10px}

/* ============ 时间轴（三段编号） ============ */
.timeline{position:relative;padding-left:36px}
.timeline::before{content:"";position:absolute;left:9px;top:8px;bottom:8px;width:1px;background:linear-gradient(180deg,rgba(124,92,255,.65),rgba(45,212,240,.35),transparent)}
.tl-item{position:relative;padding-bottom:40px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-33px;top:8px;width:12px;height:12px;border-radius:50%;background:var(--ink-800);border:2px solid var(--primary);box-shadow:0 0 12px rgba(124,92,255,.7)}
.tl-num{font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.1em}
.tl-item h3{font-size:22px;margin:8px 0 10px}
.tl-item p{font-size:15px;color:var(--text-2);line-height:1.9;max-width:760px}
.tl-item p + p{margin-top:6px}
.tl-media{margin-top:18px}
.tl-media img{width:100%;max-width:620px;aspect-ratio:16/7;object-fit:cover;border:1px solid var(--line-2)}

/* ============ 能力网格（安全项） ============ */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  border-radius:var(--r-card);padding:24px;
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.025));
  border:1px solid var(--line-1);backdrop-filter:blur(16px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.18),var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.45);box-shadow:inset 0 1px 0 rgba(255,255,255,.2),var(--shadow-glow)}
.card h3{font-size:18px;margin-bottom:10px}
.card p{font-size:14px;color:var(--text-2);line-height:1.7}
.card .btn-link{margin-top:16px}
.card-icon{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:rgba(124,92,255,.14);border:1px solid rgba(124,92,255,.32);color:var(--secondary);font-family:var(--mono);font-size:14px;margin-bottom:16px}

/* ============ 对比卡 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-card{border-radius:var(--r-lg);padding:26px;border:1px solid var(--line-1);background:var(--ink-600);position:relative;overflow:hidden}
.compare-card.before{background:linear-gradient(160deg,rgba(255,255,255,.04),rgba(255,255,255,.015))}
.compare-card.after{border-color:rgba(45,212,240,.35);box-shadow:0 0 0 1px rgba(45,212,240,.16),var(--shadow-2)}
.compare-card.after::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(45,212,240,.85),transparent)}
.compare-card h3{font-size:20px;margin-bottom:6px}
.compare-card .sub{font-size:13px;color:var(--text-3);margin-bottom:18px}
.compare-card li{display:flex;gap:12px;align-items:flex-start;padding:10px 0;border-bottom:1px solid var(--line-2);font-size:15px;color:var(--text-2)}
.compare-card li:last-child{border-bottom:0}
.tick{width:20px;height:20px;flex:0 0 auto;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:700;margin-top:5px}
.tick.gray{background:rgba(255,255,255,.08);color:var(--text-3)}
.tick.cyan{background:rgba(45,212,240,.16);color:var(--secondary)}

/* ============ 资讯入口 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{border-radius:var(--r-card);overflow:hidden;background:var(--ink-600);border:1px solid var(--line-1);transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)}
.news-card:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.45);box-shadow:var(--shadow-glow)}
.news-thumb{position:relative}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.news-thumb .badge{position:absolute;left:12px;top:12px;background:rgba(10,14,34,.66);backdrop-filter:blur(12px)}
.news-body{padding:20px}
.news-body h3{font-size:17px;line-height:1.5;margin-bottom:8px}
.news-body p{font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;margin-top:14px;font-size:12px;color:var(--text-3);font-family:var(--mono)}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px}
.faq-item{border-bottom:1px solid var(--line-1)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;min-height:56px;padding:0 4px;
  background:none;border:0;cursor:pointer;text-align:left;color:var(--text-1);font-size:16px;font-weight:500;
}
.faq-q .idx{font-family:var(--mono);font-size:12px;color:var(--primary);flex:0 0 auto}
.faq-q .sign{margin-left:auto;width:22px;height:22px;flex:0 0 auto;position:relative;transition:transform .2s var(--ease)}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;left:50%;top:50%;background:var(--text-2);transform:translate(-50%,-50%)}
.faq-q .sign::before{width:14px;height:2px}
.faq-q .sign::after{width:2px;height:14px;transition:opacity .2s var(--ease)}
.faq-item.open .faq-q .sign{transform:rotate(180deg)}
.faq-item.open .faq-q .sign::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a p{padding:0 0 20px 40px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ============ 登录卡 ============ */
.login-card{
  border-radius:var(--r-card);padding:26px;position:relative;overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.03));
  border:1px solid var(--line-1);backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow-glow),inset 0 1px 0 rgba(255,255,255,.18);
}
.login-card::before{content:"";position:absolute;top:0;left:18px;right:18px;height:1px;background:linear-gradient(90deg,transparent,rgba(124,92,255,.9),transparent)}
.login-card h3{font-size:18px;margin-bottom:4px}
.login-card .hint{font-size:13px;color:var(--text-3);margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:6px}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-input);
  background:var(--ink-600);border:1px solid var(--line-1);color:var(--text-1);font-size:15px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field input::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px rgba(124,92,255,.26)}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input:disabled{opacity:.5}
.field.error input{border-color:var(--error)}
.field .err{display:none;font-size:12px;color:var(--error);margin-top:6px}
.field.error .err{display:block}
.form-assist{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);margin:4px 0 18px}
.form-assist a{color:var(--secondary)}
.form-assist a:hover{color:#7FE7FA}
.form-note{font-size:12px;color:var(--text-3);margin-top:12px;text-align:center}

/* ============ CTA 通栏 ============ */
.cta-band{
  border-radius:var(--r-lg);padding:40px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:linear-gradient(120deg,rgba(124,92,255,.20),rgba(45,212,240,.10)),var(--ink-900);
  border:1px solid rgba(124,92,255,.28);position:relative;overflow:hidden;
}
.cta-band::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,198,97,.8),transparent)}
.cta-band h2{font-size:28px;margin-bottom:8px}
.cta-band p{font-size:15px;color:var(--text-2)}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);border-top:1px solid var(--line-1);padding:64px 0 28px;position:relative;overflow:hidden}
.site-footer::before{content:"";position:absolute;left:50%;top:-160px;width:720px;height:320px;transform:translateX(-50%);background:radial-gradient(closest-side,rgba(124,92,255,.18),transparent);pointer-events:none}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.2fr;gap:32px;position:relative}
.foot-brand p{font-size:14px;color:var(--text-2);margin:16px 0;max-width:280px;line-height:1.8}
.contact-line{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:8px;margin-bottom:16px}
.contact-line b{color:var(--accent);font-size:15px}
.qr{width:96px;height:96px;border-radius:14px;display:grid;place-items:center;text-align:center;font-size:12px;color:var(--text-3);background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));border:1px solid var(--line-1);line-height:1.6}
.foot-col h4,.foot-login h4{font-size:14px;color:var(--text-1);margin-bottom:14px}
.foot-col a{display:block;position:relative;font-size:14px;color:var(--text-2);padding:6px 0 6px 0;transition:color .18s var(--ease),padding-left .18s var(--ease)}
.foot-col a::before{content:"";position:absolute;left:0;top:50%;width:0;height:2px;background:var(--primary);transform:translateY(-50%);transition:width .18s var(--ease)}
.foot-col a:hover{color:var(--text-1);padding-left:12px}
.foot-col a:hover::before{width:6px}
.foot-login{border-radius:var(--r-card);padding:20px;background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));border:1px solid var(--line-1);backdrop-filter:blur(14px)}
.foot-login p{font-size:13px;color:var(--text-2);line-height:1.7;margin-bottom:14px}
.copy{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:48px;padding-top:20px;border-top:1px solid var(--line-2);font-size:12px;color:var(--text-3)}
.copy a{color:var(--text-3)}
.copy a:hover{color:var(--text-1)}

/* 吸底条 */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;gap:12px;padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:rgba(10,14,34,.9);backdrop-filter:blur(22px);border-top:1px solid var(--line-1);
  transform:translateY(110%);transition:transform .3s var(--ease);
}
.sticky-bar.show{transform:translateY(0)}
.sticky-bar .btn{flex:1}

/* 进入动画 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero h1{font-size:42px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{order:2}
  .cap-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr 1fr;gap:28px}
  .foot-brand{grid-column:1 / -1}
  .section{padding:72px 0}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .search{display:none}
  .link-help{display:none}
  .burger{display:grid}
  .hero{padding:28px 0 48px}
  .hero h1{font-size:30px}
  .hero-lead{font-size:15.5px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .section-head h2{font-size:24px}
  .cap-grid,.news-grid,.compare{grid-template-columns:1fr}
  .timeline{padding-left:28px}
  .tl-item::before{left:-25px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px}
  .cta-band h2{font-size:22px}
  .cta-band .btn{width:100%}
  .sticky-bar{display:flex}
  .foot-grid{grid-template-columns:1fr 1fr;gap:24px}
  .brand-text small{display:none}
}
@media (max-width:520px){
  .hero h1{font-size:27px}
  .hero-cta .btn{width:100%}
  .foot-grid{grid-template-columns:1fr}
  .copy{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink-900:#05060F;
  --ink-800:#0A0E22;
  --ink-700:#111634;
  --ink-600:#1A2044;
  --line-1:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.06);
  --primary:#7C5CFF;
  --primary-700:#5B3FE0;
  --secondary:#2DD4F0;
  --accent:#FFC661;
  --success:#34D399;
  --warning:#F5A524;
  --error:#FB7185;
  --text-1:#EEF1FF;
  --text-2:#A9B3D6;
  --text-3:#6C7799;
  --r-card:16px;
  --r-lg:24px;
  --r-btn:999px;
  --r-input:10px;
  --r-img:14px;
  --shadow-1:0 6px 20px rgba(3,6,24,.55);
  --shadow-2:0 18px 48px rgba(3,6,24,.65);
  --shadow-glow:0 0 0 1px rgba(124,92,255,.45),0 10px 34px rgba(124,92,255,.32);
  --shadow-glow-gold:0 0 0 1px rgba(255,198,97,.5),0 10px 30px rgba(255,198,97,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--text-1);
  background-color:var(--ink-800);
  background-image:
    radial-gradient(900px 620px at 6% -12%, rgba(124,92,255,.18), transparent 62%),
    radial-gradient(780px 540px at 96% 4%, rgba(45,212,240,.11), transparent 64%),
    radial-gradient(1.6px 1.6px at 18% 22%, rgba(255,255,255,.42), transparent),
    radial-gradient(1.4px 1.4px at 72% 12%, rgba(255,255,255,.34), transparent),
    radial-gradient(1.6px 1.6px at 44% 58%, rgba(255,255,255,.26), transparent),
    radial-gradient(1.4px 1.4px at 88% 74%, rgba(255,255,255,.3), transparent),
    radial-gradient(1.2px 1.2px at 30% 88%, rgba(255,255,255,.22), transparent),
    linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size:auto,auto,auto,auto,auto,auto,auto,24px 24px,24px 24px;
  background-repeat:no-repeat,no-repeat,no-repeat,no-repeat,no-repeat,no-repeat,no-repeat,repeat,repeat;
  background-attachment:fixed;
}
img{max-width:100%;display:block}
a{color:var(--secondary);text-decoration:none;transition:color 180ms var(--ease),border-color 180ms var(--ease),background-color 180ms var(--ease)}
a:hover{color:#7FE6FA}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:600;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,14,34,.72);
  backdrop-filter:blur(22px) saturate(140%);
  -webkit-backdrop-filter:blur(22px) saturate(140%);
  border-bottom:1px solid var(--line-1);
  transition:box-shadow 220ms var(--ease);
}
.site-header.is-stuck{box-shadow:0 12px 32px rgba(3,6,24,.6)}
.brand-row{border-bottom:1px solid var(--line-2)}
.brand-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height 220ms var(--ease)}
.site-header.is-stuck .brand-inner{height:60px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text-1);flex-shrink:0}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:36px;height:36px;flex-shrink:0;border-radius:12px;
  background:linear-gradient(150deg,rgba(124,92,255,.9),rgba(45,212,240,.7));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 1px rgba(124,92,255,.4),0 8px 22px rgba(124,92,255,.28);
}
.brand-mark span{width:12px;height:12px;background:#fff;border-radius:2px;transform:rotate(45deg);opacity:.92;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:17px;font-weight:600;letter-spacing:.01em}
.brand-text small{font-size:11px;color:var(--text-3);letter-spacing:.02em;margin-top:2px}
.search{flex:1;max-width:320px}
.search input{
  width:100%;height:44px;padding:0 16px;
  background:var(--ink-600);
  border:1px solid var(--line-1);border-radius:var(--r-input);
  color:var(--text-1);font-size:14px;font-family:inherit;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.search input::placeholder{color:var(--text-3)}
.search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(124,92,255,.22)}
.brand-actions{margin-left:auto;display:flex;align-items:center;gap:16px}
.link-help{font-size:14px;color:var(--text-2)}
.link-help:hover{color:var(--text-1)}
.burger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:transparent;border:1px solid var(--line-1);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
  transition:border-color 180ms var(--ease),background-color 180ms var(--ease);
}
.burger i{display:block;width:18px;height:2px;background:var(--text-2);border-radius:2px;transition:background-color 180ms var(--ease)}
.burger:hover{border-color:rgba(124,92,255,.5);background:rgba(124,92,255,.08)}
.burger:hover i{background:var(--text-1)}
.chan-row{border-bottom:1px solid var(--line-2)}
.chan-inner{display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;scrollbar-width:none}
.chan-inner::-webkit-scrollbar{display:none}
.chan-link{
  position:relative;display:inline-flex;align-items:center;height:36px;
  padding:0 14px;border-radius:10px;font-size:14px;color:var(--text-2);white-space:nowrap;
  transition:color 180ms var(--ease),background-color 180ms var(--ease);
}
.chan-link:hover{color:var(--text-1);background:rgba(255,255,255,.06)}
.chan-link.active{color:var(--text-1);background:rgba(124,92,255,.12);font-weight:500}
.chan-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(124,92,255,.9);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;font-family:inherit;line-height:1;
  border:1px solid transparent;background:transparent;color:var(--text-1);
  cursor:pointer;white-space:nowrap;
  transition:transform 150ms var(--ease),filter 150ms var(--ease),border-color 180ms var(--ease),box-shadow 220ms var(--ease),background-color 180ms var(--ease);
}
.btn-sm{height:44px;padding:0 20px;font-size:14px}
.btn-gold{
  background:linear-gradient(135deg,#FFE0A6,#FFC661 48%,#E7A735);
  color:#2A1D00;font-weight:600;box-shadow:var(--shadow-glow-gold);
}
.btn-gold:hover{filter:brightness(1.06);color:#2A1D00}
.btn-gold:active{transform:translateY(1px);filter:brightness(.97)}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;box-shadow:var(--shadow-glow)}
.btn-primary:hover{filter:brightness(1.06);color:#fff}
.btn-ghost{border-color:var(--line-1);color:var(--text-1)}
.btn-ghost:hover{border-color:rgba(124,92,255,.6);color:var(--text-1);background:rgba(124,92,255,.08)}
.btn-block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* ---------- drawer ---------- */
.scrim{
  position:fixed;inset:0;background:rgba(5,6,15,.6);z-index:70;
  opacity:0;visibility:hidden;transition:opacity 220ms var(--ease),visibility 220ms var(--ease);
}
.scrim.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;z-index:80;
  display:flex;flex-direction:column;
  background:rgba(10,14,34,.94);
  backdrop-filter:blur(22px) saturate(140%);
  -webkit-backdrop-filter:blur(22px) saturate(140%);
  border-left:1px solid var(--line-1);
  transform:translateX(102%);
  transition:transform 320ms var(--ease);
  padding:20px 20px calc(20px + env(safe-area-inset-bottom));
}
.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-2);font-size:13px;color:var(--text-3)}
.drawer-close{
  width:40px;height:40px;border-radius:12px;background:transparent;border:1px solid var(--line-1);
  color:var(--text-2);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-close:hover{color:var(--text-1);border-color:rgba(124,92,255,.5)}
.drawer-nav{display:flex;flex-direction:column;margin-top:12px;flex:1;overflow-y:auto}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 4px;color:var(--text-2);font-size:16px;
  border-bottom:1px solid var(--line-2);
}
.drawer-nav a::after{content:"›";color:var(--text-3);font-size:18px}
.drawer-nav a.active{color:var(--text-1);font-weight:500}
.drawer-nav a.active::after{color:var(--primary)}
.drawer-nav a:hover{color:var(--text-1)}
.drawer-login{margin-top:16px}

/* ---------- page head ---------- */
.page-head{position:relative;padding:56px 0 40px;border-bottom:1px solid var(--line-1);overflow:hidden}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(5,6,15,.86),rgba(10,14,34,.94)),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  opacity:.9;
}
.page-head .container{position:relative;z-index:1}
.crumb{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--text-1)}
.crumb .sep{color:var(--line-1)}
.crumb .now{color:var(--text-2)}
.head-grid{display:flex;align-items:flex-end;justify-content:space-between;gap:40px}
.head-grid h1{font-size:40px;font-weight:700;letter-spacing:0}
.head-sub{margin-top:12px;font-size:15px;color:var(--text-2);max-width:560px;line-height:1.7}
.head-points{display:flex;flex-direction:column;gap:8px;text-align:right}
.head-points li{
  font-size:14px;color:var(--text-2);display:flex;align-items:center;justify-content:flex-end;gap:8px;
}
.head-points li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--secondary);flex-shrink:0;
  box-shadow:0 0 8px rgba(45,212,240,.8);order:2;
}
.rail{height:1px;margin-top:32px;background:linear-gradient(90deg,transparent,rgba(124,92,255,.75),rgba(45,212,240,.4),transparent)}

/* ---------- metrics ---------- */
.metrics{background:var(--ink-900);padding:72px 0;position:relative}
.metrics::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(124,92,255,.7),transparent)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.sec-head h2{font-size:32px;font-weight:600}
.sec-head p{font-size:14px;color:var(--text-2);max-width:520px}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric{
  border-radius:var(--r-card);padding:24px;
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.025));
  border:1px solid var(--line-1);
  box-shadow:var(--shadow-1);
  position:relative;overflow:hidden;
}
.metric::after{content:"";position:absolute;left:24px;right:24px;bottom:16px;height:1px;background:linear-gradient(90deg,rgba(124,92,255,.7),transparent)}
.metric .num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;
  font-size:44px;font-weight:700;line-height:1.1;
  background:linear-gradient(135deg,#FFFFFF,#B9A8FF 60%,#6FE2F6);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.metric .num em{font-style:normal;font-size:18px;font-weight:600;margin-left:4px;color:var(--text-2);-webkit-text-fill-color:var(--text-2)}
.metric .name{margin-top:10px;font-size:15px;color:var(--text-1)}
.metric .note{margin-top:20px;font-size:12px;color:var(--text-3);line-height:1.6}

/* ---------- main panel + tags ---------- */
.main-tags{padding:88px 0}
.grid-8-4{display:grid;grid-template-columns:8fr 4fr;gap:24px;align-items:start}
.main-panel{
  border-radius:var(--r-lg);padding:28px;
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.022));
  border:1px solid var(--line-1);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow-1);
}
.main-panel h2{font-size:26px;margin-bottom:8px}
.main-panel > p.lead{font-size:14px;color:var(--text-2);margin-bottom:24px}
.row-item{
  display:grid;grid-template-columns:88px 1fr;gap:16px;align-items:center;
  padding:16px;border-radius:var(--r-card);
  background:var(--ink-600);border:1px solid var(--line-2);
  margin-bottom:12px;
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.row-item:last-child{margin-bottom:0}
.row-item:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.45);box-shadow:0 10px 28px rgba(124,92,255,.16)}
.row-item img{width:88px;height:64px;object-fit:cover;border-radius:10px;border:1px solid var(--line-2)}
.row-item h3{font-size:17px;margin-bottom:4px}
.row-item p{font-size:13.5px;color:var(--text-2);line-height:1.7}
.row-item h3 a{color:var(--text-1)}
.row-item h3 a:hover{color:var(--secondary)}

.side-col{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
.side-card{
  border-radius:var(--r-card);padding:20px;
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.025));
  border:1px solid var(--line-1);
  box-shadow:var(--shadow-1);
}
.side-card h3{font-size:16px;margin-bottom:12px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:999px;
  font-size:12.5px;color:var(--text-2);
  background:rgba(255,255,255,.05);border:1px solid var(--line-1);
  transition:color 180ms var(--ease),border-color 180ms var(--ease),background-color 180ms var(--ease);
}
.tag:hover{color:#fff;background:rgba(124,92,255,.22);border-color:rgba(124,92,255,.6)}
.side-login{
  position:relative;overflow:hidden;
  border-radius:var(--r-card);padding:20px;
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.03));
  border:1px solid var(--line-1);
  box-shadow:var(--shadow-glow);
}
.side-login::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(124,92,255,.9),transparent)}
.side-login h3{font-size:16px;margin-bottom:8px}
.side-login p{font-size:13px;color:var(--text-2);line-height:1.7;margin-bottom:16px}
.side-login .tip{margin-top:12px;font-size:11.5px;color:var(--text-3);line-height:1.6}

/* ---------- flow ---------- */
.flow-sec{padding:88px 0;background:var(--ink-700);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.timeline{position:relative;padding-left:32px;margin-top:8px}
.timeline::before{content:"";position:absolute;left:7px;top:12px;bottom:12px;width:1px;background:linear-gradient(180deg,rgba(124,92,255,.8),rgba(45,212,240,.25),transparent)}
.tl-item{position:relative;padding-bottom:32px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-32px;top:8px;width:15px;height:15px;border-radius:50%;
  background:var(--ink-700);border:2px solid var(--primary);box-shadow:0 0 12px rgba(124,92,255,.7);
}
.tl-item .idx{font-family:var(--font-mono);font-size:12px;color:var(--secondary);letter-spacing:.08em}
.tl-item h3{font-size:20px;margin:6px 0 8px}
.tl-item p{font-size:14.5px;color:var(--text-2);max-width:720px}
.tl-figure{margin-top:20px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line-2)}
.tl-figure img{width:100%;height:auto;aspect-ratio:16/7;object-fit:cover}
.tl-figure figcaption{font-size:12px;color:var(--text-3);padding:10px 14px;background:var(--ink-600)}

/* ---------- scenes ---------- */
.scenes{padding:88px 0}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{
  border-radius:var(--r-card);padding:24px;
  background:var(--ink-600);border:1px solid var(--line-1);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.scene-card:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.45);box-shadow:0 12px 30px rgba(124,92,255,.16)}
.scene-card .badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;color:var(--secondary);
  background:rgba(45,212,240,.1);border:1px solid rgba(45,212,240,.28);margin-bottom:14px;
}
.scene-card h3{font-size:19px;margin-bottom:8px}
.scene-card p{font-size:14px;color:var(--text-2)}
.scene-card .stat{margin-top:18px;padding-top:14px;border-top:1px solid var(--line-2);font-size:12.5px;color:var(--text-3)}
.scene-card .stat b{font-family:var(--font-mono);color:var(--text-1);font-size:14px}

/* ---------- news ---------- */
.news-sec{padding:88px 0;background:var(--ink-900);border-top:1px solid var(--line-2)}
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-item{
  display:block;border-radius:var(--r-card);padding:20px;
  background:var(--ink-600);border:1px solid var(--line-2);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.news-item:hover{transform:translateY(-2px);border-color:rgba(124,92,255,.45);box-shadow:0 12px 30px rgba(124,92,255,.16)}
.news-item .cat{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
  font-size:11.5px;color:var(--secondary);background:rgba(45,212,240,.1);border:1px solid rgba(45,212,240,.26);
}
.news-item h3{font-size:17px;color:var(--text-1);margin:14px 0 8px}
.news-item p{font-size:13.5px;color:var(--text-2);line-height:1.75}
.news-item .meta{margin-top:16px;padding-top:12px;border-top:1px solid var(--line-2);font-size:12px;color:var(--text-3);display:flex;justify-content:space-between;gap:12px}
.news-item:hover h3{color:#fff}

/* ---------- faq ---------- */
.faq-sec{padding:88px 0}
.faq{max-width:860px;margin:0 auto;border-top:1px solid var(--line-1)}
.faq-item{border-bottom:1px solid var(--line-1)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  min-height:56px;padding:16px 0;background:none;border:0;cursor:pointer;
  text-align:left;color:var(--text-1);font-size:16px;font-weight:500;font-family:inherit;
  transition:color 180ms var(--ease);
}
.faq-q:hover{color:#fff}
.faq-q .star{
  width:20px;height:20px;flex-shrink:0;position:relative;
}
.faq-q .star::before,.faq-q .star::after{
  content:"";position:absolute;left:9px;top:2px;width:2px;height:16px;background:var(--primary);border-radius:2px;
}
.faq-q .star::after{transform:rotate(90deg)}
.faq-q .arrow{margin-left:auto;font-size:20px;color:var(--text-3);transition:transform 200ms var(--ease),color 200ms var(--ease)}
.faq-item.open .faq-q .arrow{transform:rotate(45deg);color:var(--primary)}
.faq-a{display:none;padding:0 0 20px 40px;font-size:15px;line-height:1.85;color:var(--text-2)}
.faq-item.open .faq-a{display:block}

/* ---------- cta band ---------- */
.cta-band{
  padding:64px 0;background:var(--ink-900);position:relative;
  border-top:1px solid var(--line-1);border-bottom:1px solid var(--line-1);
}
.cta-band::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,198,97,.55),rgba(124,92,255,.5),transparent)}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:28px}
.cta-inner p{margin-top:10px;font-size:14px;color:var(--text-2);max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-900);position:relative;padding:64px 0 24px;
  border-top:1px solid var(--line-1);
}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(124,92,255,.7),transparent)}
.site-footer::after{
  content:"";position:absolute;top:0;left:20%;width:60%;height:220px;pointer-events:none;
  background:radial-gradient(closest-side,rgba(124,92,255,.16),transparent);opacity:.8;
}
.foot-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.4fr;gap:32px}
.foot-brand .brand{margin-bottom:16px}
.foot-brand p{font-size:13px;color:var(--text-2);line-height:1.8;max-width:300px}
.contact-line{margin-top:16px;font-size:13px;color:var(--text-3)}
.contact-line b{color:var(--text-1);margin-left:6px;font-size:14px}
.qr{
  margin-top:16px;width:96px;height:96px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-1);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:11.5px;color:var(--text-3);line-height:1.6;
}
.foot-col h4,.foot-login h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text-1)}
.foot-col{display:flex;flex-direction:column;gap:10px}
.foot-col a{position:relative;font-size:13.5px;color:var(--text-2);padding-left:0;transition:color 180ms var(--ease),padding-left 180ms var(--ease)}
.foot-col a::before{
  content:"";position:absolute;left:0;top:50%;width:0;height:2px;border-radius:2px;
  background:var(--primary);transform:translateY(-50%);transition:width 180ms var(--ease);
}
.foot-col a:hover{color:var(--text-1);padding-left:10px}
.foot-col a:hover::before{width:6px}
.foot-login{
  border-radius:var(--r-card);padding:20px;
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.025));
  border:1px solid var(--line-1);
}
.foot-login p{font-size:13px;color:var(--text-2);line-height:1.75;margin-bottom:16px}
.copy{
  position:relative;z-index:1;margin-top:48px;padding-top:20px;border-top:1px solid var(--line-2);
  display:flex;gap:20px;flex-wrap:wrap;align-items:center;
  font-size:12px;color:var(--text-3);
}
.copy a{font-size:12px;color:var(--text-3)}
.copy a:hover{color:var(--text-1)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 320ms var(--ease),transform 320ms var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1439px){
  .container{max-width:1200px}
}
@media (max-width:1279px){
  .container{padding:0 24px}
  .grid-8-4{grid-template-columns:1fr}
  .side-col{position:static}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .foot-login{grid-column:1 / -1}
}
@media (max-width:1023px){
  .search{display:none}
  .brand-text small{display:none}
  .head-grid{flex-direction:column;align-items:flex-start;gap:24px}
  .head-points{text-align:left}
  .head-points li{justify-content:flex-start}
  .head-points li::before{order:0}
  .head-grid h1{font-size:34px}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid,.news-list{grid-template-columns:repeat(2,1fr)}
  .page-head{padding:40px 0 32px}
  .metrics,.main-tags,.scenes,.news-sec,.faq-sec,.flow-sec{padding:64px 0}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 16px}
  .link-help{display:none}
  .burger{display:flex}
  .chan-inner{height:48px}
  .head-grid h1{font-size:30px}
  .head-sub{font-size:14px}
  .sec-head h2{font-size:24px}
  .main-panel{padding:20px}
  .main-panel h2{font-size:21px}
  .row-item{grid-template-columns:72px 1fr;padding:14px}
  .row-item img{width:72px;height:56px}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .metric{padding:20px}
  .metric .num{font-size:32px}
  .metric .num em{font-size:15px}
  .scene-grid,.news-list{grid-template-columns:1fr}
  .cta-inner h2{font-size:23px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .timeline{padding-left:26px}
  .tl-item::before{left:-26px}
  .faq-a{padding-left:36px;font-size:14.5px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:24px}
  .foot-brand{grid-column:1 / -1}
  .copy{margin-top:32px;font-size:11.5px;gap:12px}
}
@media (max-width:519px){
  .brand-text b{font-size:15px}
  .head-grid h1{font-size:26px}
  .metric-grid{grid-template-columns:1fr 1fr}
  .btn{width:100%}
  .btn-sm{width:auto}
  .copy span,.copy a{font-size:11px}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
}