:root{--bg:#05070D;--night:#0E1630;--night2:#16213F;--cyan:#22D3EE;--violet:#8B5CF6;--pink:#EC4899;--muted:#9AA9BA;--danger:#F87171;--ok:#34D399}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:#fff;
background-image:radial-gradient(circle at 20% 30%,rgba(139,92,246,.25),transparent 45%),radial-gradient(circle at 85% 80%,rgba(236,72,153,.18),transparent 45%);min-height:100vh}
header{padding:18px 20px}
.logo{font-weight:800;font-size:24px;color:var(--cyan);text-decoration:none;letter-spacing:1px}
.logo span{color:#fff;font-weight:600;font-size:14px;letter-spacing:4px;margin-left:4px}
main{max-width:640px;margin:0 auto;padding:10px 18px 40px}
h1{font-size:24px;margin:10px 0 6px}
h2{font-size:18px;margin:26px 0 10px;color:var(--cyan)}
p{line-height:1.5;color:#dfe6ee}
.card{background:rgba(14,22,48,.88);border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:18px;margin:14px 0}
label{display:block;font-size:13px;color:var(--muted);margin:12px 0 4px}
input,select{width:100%;padding:12px;border-radius:10px;border:1px solid rgba(255,255,255,.2);background:var(--night2);color:#fff;font-size:16px}
input:focus{outline:2px solid var(--cyan)}
button,.btn{display:inline-block;margin-top:14px;padding:12px 18px;border:0;border-radius:10px;font-size:16px;font-weight:700;cursor:pointer;
background:linear-gradient(90deg,var(--violet),var(--pink));color:#fff;text-decoration:none}
button.secondary,.btn.secondary{background:var(--night2);border:1px solid rgba(255,255,255,.2)}
button.danger{background:#7f1d1d}
.notice{padding:12px;border-radius:10px;background:var(--night2);border-left:4px solid var(--cyan)}
.notice.error{border-left-color:var(--danger)}
.notice.ok{border-left-color:var(--ok)}
.muted{color:var(--muted);font-size:14px}
.mono{font-family:ui-monospace,Consolas,monospace;color:var(--cyan)}
.row{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.tabs{display:flex;gap:8px}.tabs label{flex:1;text-align:center;padding:10px;border-radius:10px;background:var(--night2);cursor:pointer;color:#fff;margin:0}
.tabs input{display:none}.tabs input:checked+span{color:var(--cyan)}
table{width:100%;border-collapse:collapse;font-size:14px}th,td{padding:8px;border-bottom:1px solid rgba(255,255,255,.08);text-align:left}
footer{text-align:center;color:var(--muted);font-size:12px;padding:20px}
.plans{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.plan{background:var(--night2);border-radius:14px;padding:14px;text-align:center}.plan b{font-size:26px;color:var(--cyan);display:block}