:root{
  --bg0:#020308; --bg1:#050a18; --bg2:#0a1838; --navy:#0d2257;
  --gold:#d9b25f; --gold2:#f3d98f; --gold3:#a8823a;
  --ink:#eef1f8; --ink2:#aab3c8; --ink3:#6f7a93;
  --line:rgba(217,178,95,.22); --line2:rgba(160,180,230,.12);
  --card:rgba(10,22,52,.55); --card2:rgba(6,12,30,.72);
  --ok:#5fd39a; --bad:#ff7a7a; --warn:#f0c062;
  --r:16px;
  --serif:"Songti SC","STSong","Noto Serif SC","Source Han Serif SC","Noto Serif CJK SC",Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html{background:var(--bg0)}
body{margin:0;min-height:100vh;color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.6;background:transparent;overflow-x:hidden;position:relative}
body:before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:radial-gradient(1200px 700px at 50% 110%,rgba(23,58,140,.55),transparent 60%),
             linear-gradient(180deg,var(--bg0) 0%,var(--bg1) 35%,var(--bg2) 100%)}
a{color:var(--gold2);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.mono{font-family:var(--mono);word-break:break-all}
.muted{color:var(--ink2)} .dim{color:var(--ink3)}
.gold{color:var(--gold2)}
.ok{color:var(--ok)} .bad{color:var(--bad)} .warn{color:var(--warn)}
.hide{display:none!important}

/* ── background motif: thin circles + crosshair, echoing the logo ── */
.orbits{position:fixed;inset:0;pointer-events:none;z-index:-1;overflow:hidden}
.orbits svg{position:absolute;left:50%;top:-10vh;transform:translateX(-50%);width:min(1400px,180vw);height:auto;opacity:.55}

/* ── header ── */
header.top{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:linear-gradient(180deg,rgba(2,3,8,.85),rgba(2,3,8,.55));border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;gap:14px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-family:var(--serif);font-size:20px;letter-spacing:.06em;white-space:nowrap}
.brand:hover{text-decoration:none}
.brand img{width:36px;height:36px;border-radius:50%;box-shadow:0 0 0 1px var(--line),0 0 18px rgba(217,178,95,.25)}
.brand b{color:var(--gold2);font-weight:600}
.brand small{font-family:var(--sans);font-size:11px;letter-spacing:.25em;color:var(--ink2)}
nav.main{display:flex;gap:4px;margin-left:12px}
nav.main a{color:var(--ink2);padding:8px 12px;border-radius:999px;font-size:14px;white-space:nowrap}
nav.main a:hover,nav.main a.on{color:var(--gold2);background:rgba(217,178,95,.08);text-decoration:none}
.top .spacer{flex:1}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--ink);padding:9px 16px;border-radius:999px;font-size:14px;cursor:pointer;font-family:inherit;white-space:nowrap;transition:.15s}
.btn:hover{border-color:var(--gold);color:var(--gold2);text-decoration:none}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.gold{background:linear-gradient(180deg,var(--gold2),var(--gold) 55%,var(--gold3));color:#1b1406;border-color:transparent;font-weight:600}
.btn.gold:hover{filter:brightness(1.08);color:#1b1406}
.btn.sm{padding:6px 12px;font-size:13px}
.btn.xs{padding:3px 9px;font-size:12px}
.btn.block{width:100%}
.lang{font-size:13px;padding:7px 12px}
.burger{display:none;background:none;border:1px solid var(--line);color:var(--ink);border-radius:10px;width:40px;height:38px;font-size:18px;cursor:pointer}

/* ── banner ── */
.banner{border:1px solid rgba(240,192,98,.35);background:linear-gradient(90deg,rgba(240,192,98,.10),rgba(240,192,98,.03));
  color:var(--gold2);padding:12px 16px;border-radius:12px;margin:18px 0;font-size:14px;display:flex;gap:10px;align-items:flex-start}
.banner b{white-space:nowrap}

/* ── hero ── */
.hero{position:relative;text-align:center;padding:64px 0 40px}
.hero .emblem{width:168px;height:168px;margin:0 auto 26px;position:relative}
.hero .emblem img{width:100%;height:100%;border-radius:50%;box-shadow:0 0 0 1px var(--line),0 0 60px rgba(40,90,220,.35),0 0 30px rgba(217,178,95,.18)}
.hero .emblem:before,.hero .emblem:after{content:"";position:absolute;inset:-18px;border-radius:50%;border:1px solid var(--line)}
.hero .emblem:after{inset:-40px;border-color:var(--line2)}
.kicker{display:inline-block;font-size:12px;letter-spacing:.32em;color:var(--gold);text-transform:uppercase;margin-bottom:14px}
h1,h2,h3{font-family:var(--serif);font-weight:600;letter-spacing:.02em;margin:0}
.hero h1{font-size:clamp(34px,7vw,68px);line-height:1.12;background:linear-gradient(180deg,#fff 0%,#f1e3b8 55%,var(--gold) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{max-width:640px;margin:18px auto 28px;color:var(--ink2);font-size:clamp(15px,2.2vw,18px)}
.hero .cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin:46px auto 0;max-width:860px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.stat{background:var(--card2);padding:16px 10px;text-align:center}
.stat b{display:block;font-family:var(--serif);font-size:22px;color:var(--gold2)}
.stat span{font-size:12px;color:var(--ink2)}

/* ── sections ── */
section.blk{padding:56px 0}
.sec-h{text-align:center;margin-bottom:30px}
.sec-h h2{font-size:clamp(24px,4vw,36px)}
.sec-h p{color:var(--ink2);margin:10px auto 0;max-width:620px}
.divider{display:flex;align-items:center;gap:14px;justify-content:center;color:var(--gold);margin:6px 0 14px;font-size:12px}
.divider:before,.divider:after{content:"";height:1px;width:60px;background:linear-gradient(90deg,transparent,var(--gold))}
.divider:after{transform:scaleX(-1)}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;position:relative;backdrop-filter:blur(6px)}
.card.glow{box-shadow:0 0 0 1px rgba(217,178,95,.05),0 20px 60px -30px rgba(40,90,220,.6)}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.step .num{width:44px;height:44px;border-radius:50%;border:1px solid var(--gold);display:grid;place-items:center;color:var(--gold2);font-family:var(--serif);font-size:18px;margin-bottom:14px;position:relative}
.step .num:after{content:"";position:absolute;inset:-6px;border-radius:50%;border:1px solid var(--line2)}
.step h3{font-size:19px;margin-bottom:8px}
.step p{color:var(--ink2);margin:0}

table.t{width:100%;border-collapse:collapse;font-size:14px}
table.t th,table.t td{padding:11px 10px;border-bottom:1px solid var(--line2);text-align:left;vertical-align:top}
table.t th{color:var(--gold);font-weight:500;font-size:12px;letter-spacing:.08em;text-transform:uppercase}
.tscroll{overflow-x:auto;-webkit-overflow-scrolling:touch}

ul.ticks{list-style:none;padding:0;margin:0}
ul.ticks li{padding:8px 0 8px 26px;position:relative;color:var(--ink2);border-bottom:1px dashed var(--line2)}
ul.ticks li:last-child{border-bottom:0}
ul.ticks li:before{content:"✦";position:absolute;left:2px;top:8px;color:var(--gold);font-size:12px}
ul.ticks li b{color:var(--ink)}

/* ── forms ── */
label.f{display:block;font-size:12px;color:var(--ink2);margin:14px 0 6px;letter-spacing:.04em}
input.i,select.i,textarea.i{width:100%;background:rgba(0,0,0,.35);border:1px solid var(--line2);color:var(--ink);border-radius:12px;padding:11px 13px;font-size:16px;font-family:inherit;outline:none}
input.i:focus,select.i:focus{border-color:var(--gold)}
.row{display:flex;gap:10px;align-items:center}
.row > *{min-width:0}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{border:1px solid var(--line2);background:rgba(255,255,255,.03);color:var(--ink2);border-radius:999px;padding:6px 12px;font-size:13px;cursor:pointer;font-family:inherit}
.chip.on,.chip:hover{border-color:var(--gold);color:var(--gold2)}
.seg{display:grid;grid-template-columns:1fr 1fr;background:rgba(0,0,0,.35);border:1px solid var(--line2);border-radius:999px;padding:4px}
.seg button{border:0;background:none;color:var(--ink2);padding:9px;border-radius:999px;font-size:14px;cursor:pointer;font-family:inherit}
.seg button.on{background:linear-gradient(180deg,var(--gold2),var(--gold));color:#1b1406;font-weight:600}
.check{display:flex;gap:8px;align-items:center;font-size:14px;color:var(--ink2);margin-top:12px;cursor:pointer}
.check input{accent-color:var(--gold);width:18px;height:18px}
.kv{display:flex;justify-content:space-between;gap:12px;padding:7px 0;border-bottom:1px dashed var(--line2);font-size:14px}
.kv:last-child{border-bottom:0}
.kv span:first-child{color:var(--ink2)}
.kv span:last-child{text-align:right;word-break:break-all}
.note{font-size:12px;color:var(--ink3);margin-top:8px}
input[type=range]{width:100%;accent-color:var(--gold)}

/* ── book ── */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:20px;align-items:start;margin-top:18px}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;justify-content:space-between;margin-bottom:14px}
.offer{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:14px;align-items:center;padding:14px;border:1px solid var(--line2);border-radius:14px;background:var(--card2);margin-bottom:10px;color:var(--ink)}
.offer:hover{border-color:var(--gold);text-decoration:none}
.badge{display:inline-block;font-size:11px;padding:2px 8px;border-radius:999px;border:1px solid var(--line2);color:var(--ink2);white-space:nowrap}
.badge.ask{color:#ff9b9b;border-color:rgba(255,122,122,.4)}
.badge.bid{color:#7fe0ad;border-color:rgba(95,211,154,.4)}
.badge.priv{color:var(--gold2);border-color:var(--line)}
.badge.warn{color:var(--warn);border-color:rgba(240,192,98,.4)}
.tokdot{width:38px;height:38px;border-radius:50%;background:radial-gradient(circle at 30% 30%,#28407c,#0a1532);border:1px solid var(--line);display:grid;place-items:center;font-size:12px;color:var(--gold2);overflow:hidden;flex:none}
.tokdot img{width:100%;height:100%;object-fit:cover}
.offer .main{min-width:0}
.offer .main .l1{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.offer .main .l1 b{font-size:15px}
.offer .main .l2{font-size:13px;color:var(--ink2);overflow:hidden;text-overflow:ellipsis}
.offer .px{text-align:right;font-size:14px;white-space:nowrap}
.offer .px small{display:block;color:var(--ink3);font-size:12px}
.empty{text-align:center;padding:40px 16px;color:var(--ink2);border:1px dashed var(--line);border-radius:14px}

/* search dropdown */
.search{position:relative}
.results{position:absolute;left:0;right:0;top:calc(100% + 6px);z-index:40;background:#060c1f;border:1px solid var(--line);border-radius:14px;max-height:360px;overflow:auto;box-shadow:0 20px 50px rgba(0,0,0,.6)}
.res{display:flex;gap:10px;align-items:center;padding:10px 12px;cursor:pointer;border-bottom:1px solid var(--line2)}
.res:hover{background:rgba(217,178,95,.06)}
.res .tokdot{width:30px;height:30px}
.res .m{flex:1;min-width:0}
.res .m div{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.res .m .a{font-size:11px;color:var(--ink3);font-family:var(--mono)}
.res .r{text-align:right;font-size:12px;color:var(--ink2);white-space:nowrap}

.tokcard{display:flex;gap:12px;align-items:center}
.tokcard .tokdot{width:44px;height:44px}

/* sim */
.sim-out{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}
.sim-box{border:1px solid var(--line2);border-radius:12px;padding:12px;background:rgba(0,0,0,.25)}
.sim-box h4{margin:0 0 6px;font-size:12px;color:var(--gold);letter-spacing:.1em;font-weight:500}
.sim-box .big{font-family:var(--serif);font-size:22px}

/* modal / toast */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.65);z-index:100;display:grid;place-items:center;padding:20px}
.modal .card{width:min(440px,100%);max-height:90vh;overflow:auto;background:#071026}
.wallet-opt{display:flex;align-items:center;gap:12px;padding:12px;border:1px solid var(--line2);border-radius:12px;margin-top:10px;cursor:pointer;color:var(--ink);background:none;width:100%;font-family:inherit;font-size:15px;text-align:left}
.wallet-opt:hover{border-color:var(--gold);text-decoration:none}
.wallet-opt img{width:28px;height:28px;border-radius:8px}
#toast{pointer-events:none;position:fixed;left:50%;bottom:24px;transform:translateX(-50%);z-index:120;display:flex;flex-direction:column;gap:8px;width:min(520px,calc(100% - 32px))}
.toast{pointer-events:auto;background:#0b1736;border:1px solid var(--line);border-radius:12px;padding:12px 14px;font-size:14px;box-shadow:0 10px 30px rgba(0,0,0,.5);word-break:break-word}
.toast.err{border-color:rgba(255,122,122,.5)}
.toast.ok{border-color:rgba(95,211,154,.5)}

/* docs */
.doc{display:grid;grid-template-columns:220px minmax(0,1fr);gap:28px;margin-top:24px}
.doc nav{position:sticky;top:84px;align-self:start;display:flex;flex-direction:column;gap:2px}
.doc nav a{color:var(--ink2);padding:6px 10px;border-left:1px solid var(--line2);font-size:14px}
.doc nav a:hover{color:var(--gold2);border-color:var(--gold);text-decoration:none}
.doc article h2{font-size:26px;margin:34px 0 12px;padding-top:8px}
.doc article h2:first-child{margin-top:0}
.doc article h3{font-size:18px;margin:22px 0 8px;color:var(--gold2)}
.doc article p,.doc article li{color:var(--ink2)}
.doc article code,.code{font-family:var(--mono);font-size:13px;background:rgba(0,0,0,.35);border:1px solid var(--line2);border-radius:6px;padding:1px 6px;color:var(--gold2);word-break:break-all}
pre.code{display:block;padding:14px;overflow-x:auto;white-space:pre;word-break:normal;line-height:1.5}
details.faq{border:1px solid var(--line2);border-radius:12px;padding:12px 16px;margin-bottom:10px;background:var(--card2)}
details.faq summary{cursor:pointer;font-weight:600;color:var(--ink)}
details.faq p{margin:10px 0 0}

footer{border-top:1px solid var(--line);margin-top:60px;padding:30px 0 50px;color:var(--ink3);font-size:13px}
footer .wrap{display:flex;gap:16px;justify-content:space-between;flex-wrap:wrap}

/* ── responsive ── */
@media (max-width:980px){
  .layout{grid-template-columns:1fr}
  .doc{grid-template-columns:minmax(0,1fr)}
  .doc nav{position:static;flex-direction:row;flex-wrap:wrap;gap:6px}
  .doc nav a{border:1px solid var(--line2);border-radius:999px;padding:4px 10px;font-size:13px}
}
@media (max-width:820px){
  nav.main{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:#040816;border-bottom:1px solid var(--line);padding:10px 16px;margin:0}
  nav.main.open{display:flex}
  nav.main a{padding:12px}
  .burger{display:block}
  .grid3,.grid2{grid-template-columns:1fr}
  .stat-row{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:480px){
  .wrap{padding:0 14px}
  header.top .wrap{gap:8px}
  .brand small{display:none}
  .brand{font-size:18px}
  .brand img{width:32px;height:32px}
  #walletBtn{padding:8px 12px;font-size:13px}
  .lang{padding:7px 10px}
  .hero{padding:44px 0 24px}
  .hero .emblem{width:132px;height:132px}
  .card{padding:16px}
  section.blk{padding:40px 0}
  .offer{grid-template-columns:auto minmax(0,1fr);}
  .offer .px{grid-column:2;text-align:left}
  .sim-out{grid-template-columns:1fr}
  .kv{font-size:13px}
}

/* language switching: <span class="zh">…</span><span class="en">…</span> */
html[lang="en"] .zh{display:none!important}
html:not([lang="en"]) .en{display:none!important}
.tokbar:empty{display:none}
.tokbar{margin:26px auto 0;max-width:760px;display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px 12px;padding:14px 18px;border:1px solid var(--gold);border-radius:14px;background:rgba(217,178,95,.06)}
.tokbar .tk-l{color:var(--gold2);font-size:14px;letter-spacing:.06em}
.tokbar .tk-a{font-size:13px;color:var(--ink);word-break:break-all}
@media (max-width:640px){.tokbar .tk-a{font-size:12px;width:100%;text-align:center}}