:root{--brand:#2d50d7;--bg:#0f1320;--card:#151a2d;--text:#e9edf7;--muted:#9aa3b2;--border:#1f2742}
*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,'Helvetica Neue',Arial}
.container{max-width:980px;margin:24px auto;padding:0 16px}
.header{display:flex;align-items:center;justify-content:space-between;margin-top:16px}
.brand{display:flex;align-items:center;gap:12px}
.logo{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--brand),#4b6bff);display:grid;place-items:center;color:#fff;font-weight:700}
.badge{background:#1a2040;color:#cbd5ff;border:1px solid var(--border);padding:8px 12px;border-radius:10px;font-size:.9rem}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px;margin:16px 0;box-shadow:0 6px 20px rgba(0,0,0,.25)}
h1,h2{margin:0 0 12px 0}.input{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}
.input input,.input select{background:#0c1021;border:1px solid var(--border);color:#e9edf7;padding:12px;border-radius:12px;outline:none}
.input input:focus,.input select:focus{border-color:#516bff;box-shadow:0 0 0 3px rgba(81,107,255,.15)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.button{background:var(--brand);color:#fff;border:0;padding:12px 16px;border-radius:12px;cursor:pointer;font-weight:600;display:inline-block;text-align:center}
.button.full{width:100%}.tabs{display:flex;gap:8px;margin:8px 0 16px 0}
.tab{padding:10px 14px;border-radius:999px;border:1px solid var(--border);cursor:pointer;color:#c9d1e9}
.tab.active{background:var(--brand);border-color:transparent;color:#fff;font-weight:700}
.hr{height:1px;background:var(--border);margin:16px 0}.notice{background:#122035;border:1px dashed #2b3d68;color:#cbd5ff;padding:12px;border-radius:12px}
.helper{color:#9aa3b2;font-size:.92rem}.qr{display:grid;place-items:center;gap:10px}
pre.code{background:#0c1021;border:1px solid var(--border);padding:12px;border-radius:12px;white-space:pre-wrap;word-break:break-all}
.footer{color:#9aa3b2;text-align:center;margin:24px 0}
@media (max-width:720px){.row{grid-template-columns:1fr}}