:root{
  --bg:#0f1419;
  --panel:#161d25;
  --panel2:#1c242e;
  --line:#2a3542;
  --text:#e8edf3;
  --muted:#94a3b8;
  --brand:#12b886;
  --brand2:#0ea5e9;
  --warn:#f59e0b;
  --danger:#ef4444;
  --radius:14px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
.wrap{max-width:760px;margin:0 auto;padding:0 18px}
.wide{max-width:1080px}
.nav{height:56px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(15,20,25,.92);backdrop-filter:blur(10px);z-index:50}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:17px;letter-spacing:.5px}
.dot{width:9px;height:9px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand)}
.nav-links{display:flex;gap:14px;font-size:14px;color:var(--muted)}
.nav-links a{color:var(--muted)}
.nav-links a:hover{color:var(--text)}

.hero{padding:44px 0 26px;text-align:center}
.hero h1{font-size:30px;line-height:1.28;margin:0 0 12px;font-weight:800;letter-spacing:.2px}
.hero p{color:var(--muted);margin:0 auto 24px;max-width:560px;font-size:15px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:15px 30px;border-radius:var(--radius);border:0;cursor:pointer;
  font-size:17px;font-weight:700;color:#fff;background:linear-gradient(135deg,#12b886,#0ea5e9);
  box-shadow:0 10px 30px rgba(18,184,134,.28);transition:transform .12s ease;
  font-family:inherit;width:100%;max-width:340px;
}
.btn:active{transform:scale(.97)}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--text);box-shadow:none;font-weight:600;font-size:15px;padding:12px 20px}
.btn.small{padding:9px 16px;font-size:14px;width:auto;max-width:none}
.btn:disabled{opacity:.5;cursor:not-allowed}
.tip{font-size:13px;color:var(--muted);margin-top:12px}

.grid3{display:grid;grid-template-columns:1fr;gap:12px;margin:34px 0}
.card3{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px 18px}
.card3 h3{margin:0 0 6px;font-size:16px;font-weight:700}
.card3 p{margin:0;font-size:14px;color:var(--muted);line-height:1.65}
.icon{font-size:20px;display:block;margin-bottom:6px}

.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:14px}
.panel h2{font-size:17px;margin:0 0 12px;font-weight:700}
.row{display:flex;align-items:center;justify-content:space-between;gap:10px}
.muted{color:var(--muted);font-size:14px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px}

.cards{display:grid;grid-template-columns:1fr;gap:10px}
.datacard{background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:14px;position:relative;overflow:hidden}
.datacard.hot{border-color:var(--brand);box-shadow:0 0 0 1px rgba(18,184,134,.35),0 8px 24px rgba(18,184,134,.12)}
.datacard .t{font-weight:700;font-size:15px;margin-bottom:6px;display:flex;align-items:center;gap:8px}
.badge{font-size:11px;padding:2px 7px;border-radius:99px;background:rgba(18,184,134,.15);color:var(--brand);font-weight:600}
.badge.gray{background:rgba(148,163,184,.15);color:var(--muted)}
.badge.warn{background:rgba(245,158,11,.15);color:var(--warn)}
.datacard .meta{font-size:13px;color:var(--muted);line-height:1.75}
.datacard .act{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}

.empty{text-align:center;padding:34px 12px;color:var(--muted);font-size:14px;border:1px dashed var(--line);border-radius:12px}

input,textarea,select{
  width:100%;background:var(--panel2);border:1px solid var(--line);color:var(--text);
  border-radius:10px;padding:12px 14px;font-size:15px;font-family:inherit;outline:none;
}
input:focus,textarea:focus{border-color:var(--brand)}
label{display:block;font-size:13px;color:var(--muted);margin:0 0 6px}

.drop{
  border:2px dashed var(--line);border-radius:var(--radius);padding:34px 18px;text-align:center;
  transition:all .15s ease;cursor:pointer;background:var(--panel);
}
.drop:hover,.drop.over{border-color:var(--brand);background:rgba(18,184,134,.06)}
.drop .big{font-size:34px;display:block;margin-bottom:8px}
.drop .sub{font-size:13px;color:var(--muted);margin-top:6px}

.progress{height:6px;background:var(--panel2);border-radius:99px;overflow:hidden;margin-top:12px;display:none}
.progress.on{display:block}
.bar{height:100%;width:0;background:linear-gradient(90deg,#12b886,#0ea5e9);transition:width .2s}

.toast{
  position:fixed;left:50%;bottom:30px;transform:translateX(-50%) translateY(20px);
  background:#1f2937;border:1px solid var(--line);color:var(--text);padding:11px 20px;border-radius:99px;
  font-size:14px;opacity:0;transition:all .25s ease;z-index:999;pointer-events:none;max-width:90vw;text-align:center;
}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}

.footer{text-align:center;color:var(--muted);font-size:12px;padding:28px 0 40px;line-height:1.8}

@media (min-width:680px){
  .grid3{grid-template-columns:repeat(3,1fr)}
  .cards{grid-template-columns:1fr 1fr}
  .hero h1{font-size:40px}
  .hero{padding:70px 0 36px}
}