:root{
  --bg:#0e1726; --card:#182233; --text:#e6edf3; --muted:#9fb0c0; --accent:#30c48d;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:16px/1.45 system-ui,Segoe UI,Roboto,Arial,sans-serif}
.container{max-width:980px;margin:0 auto;padding:24px}
.nav{display:flex;gap:16px;align-items:center;margin-bottom:12px}
.nav .brand{display:flex;gap:10px;align-items:center}
.nav a{color:var(--muted);text-decoration:none}
.nav a:hover{color:var(--text)}
.hero{background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.06);border-radius:14px;padding:20px;margin:16px 0}
.btn{display:inline-block;background:var(--accent);color:#083c2b;padding:10px 16px;border-radius:8px;text-decoration:none;font-weight:700}
.btn.alt{background:#4ea1ff;color:#08233c}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.card{background:var(--card);border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:16px}
ul{padding-left:18px;margin:8px 0}
.footer{opacity:.7;margin:28px 0}
pre{white-space:pre-wrap;word-wrap:break-word}
input[type=file]{padding:10px;background:#0b1422;border:1px solid rgba(255,255,255,.12);border-radius:8px;color:var(--text);}
progress{width:100%;height:10px}
.small{color:var(--muted);font-size:.9em}
h1,h2{margin:0 0 8px 0}
h1{font-size:34px}