:root{--bg:#0b0f19;--card:#121829;--fg:#e5e7eb;--muted:#9ca3af;--brand:#7c3aed}
*{box-sizing:border-box} body{margin:0;font-family:Inter,system-ui,Segoe UI,Roboto,Arial;background:var(--bg);color:var(--fg)}
.container{max-width:900px;margin:0 auto;padding:24px}
.card{background:var(--card);border-radius:16px;padding:24px;box-shadow:0 6px 24px rgba(0,0,0,.25)}
.header{display:flex;align-items:center;gap:12px;margin-bottom:24px}
.header img{height:28px}
.nav{display:flex;gap:16px;margin-bottom:24px}
.nav a{color:var(--fg);text-decoration:none;opacity:.8}
.nav a:hover{opacity:1}
h1{font-size:28px;margin:.2em 0}
h2{font-size:20px;margin-top:1.2em}
p,li{line-height:1.7;color:var(--fg)}
small, .muted{color:var(--muted)}
.btn{display:inline-block;background:var(--brand);color:white;padding:10px 16px;border-radius:12px;text-decoration:none}
.input, textarea{width:100%;padding:12px;border-radius:12px;border:1px solid #2a3353;background:#0d1326;color:#e5e7eb}
label{display:block;margin:.6em 0 .3em}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.alert{padding:12px;border-radius:12px;background:#0f172a;margin:12px 0}
footer{margin-top:32px}
.lang{float:right}