:root{
  --top-a:#0f172a; --top-b:#1e293b; --accent:#38bdf8;
  --surface:#0b1220; --surface2:#0f1b2d; --border:#1f2937;
  --text:#E2E8F0; --muted:#94A3B8; --green:#16a34a; --blue:#1d4ed8; --slate:#334155;
}
*{box-sizing:border-box}
body{margin:0;background:linear-gradient(180deg,var(--surface),#0a1220);color:var(--text);font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif}
a{color:var(--accent);text-decoration:none}
header{background:linear-gradient(90deg,var(--top-a),var(--top-b));padding:14px 20px;position:sticky;top:0;z-index:50;border-bottom:1px solid var(--border)}
.brand{font-weight:700;letter-spacing:.3px}
.nav{display:flex;gap:14px;flex-wrap:wrap;margin-top:8px}
.nav a{padding:8px 12px;border:1px solid transparent;border-radius:999px}
.nav a.active,.nav a:hover{border-color:var(--accent)}
.container{max-width:1100px;margin:24px auto;padding:0 16px}
.grid{display:grid;gap:16px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--surface2);border:1px solid var(--border);border-radius:16px;box-shadow:0 8px 24px rgba(0,0,0,.25)}
.card-pad{padding:16px}
.h1{font-size:22px;margin:0 0 10px}
.h2{font-size:18px;margin:0 0 10px}
.table{width:100%;border-collapse:collapse}
.table th,.table td{border-bottom:1px solid var(--border);padding:10px;text-align:left}
.btn{display:inline-block;padding:8px 14px;border-radius:999px;border:1px solid var(--border);background:#0f172a;color:var(--text);cursor:pointer}
.btn:hover{border-color:var(--accent)}
.btn-primary{background:var(--accent);color:#06121f;border-color:transparent}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.input,.select,.textarea{width:100%;padding:10px;border-radius:10px;border:1px solid var(--border);background:#0b1220;color:var(--text)}
.footer{opacity:.7;text-align:center;padding:30px 20px;font-size:12px}
@media(max-width:720px){.grid-3{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}}