:root { --bg:#0b1220; --card:#0f1b33; --txt:#e7eefc; --muted:#a9b6d6; --link:#8cb4ff; --line:#203255; }
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--txt);line-height:1.55}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1120px;margin:0 auto;padding:18px}
.top{border-bottom:1px solid var(--line);background:rgba(11,18,32,.85);backdrop-filter: blur(8px);position:sticky;top:0}
.brand{font-weight:800;letter-spacing:.2px}
.nav a{margin-left:14px;color:var(--muted)}
.hero{padding:24px;border:1px solid var(--line);background:linear-gradient(180deg,var(--card),transparent);border-radius:14px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:14px}
@media (max-width:900px){.grid{grid-template-columns:1fr}}
.card{border:1px solid var(--line);background:rgba(15,27,51,.55);border-radius:14px;padding:16px}
.muted{color:var(--muted)}
.kicker{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.14em}
h1,h2,h3{line-height:1.2}
h1{font-size:34px;margin:6px 0 10px}
h2{font-size:22px;margin:18px 0 10px}
input,textarea,select{width:100%;padding:10px;border-radius:10px;border:1px solid var(--line);background:#091021;color:var(--txt)}
.btn{display:inline-block;padding:10px 14px;border-radius:12px;border:1px solid var(--line);background:#0d1830;color:var(--txt);font-weight:650}
.btn:hover{text-decoration:none;filter:brightness(1.08)}
.foot{border-top:1px solid var(--line);margin-top:26px}
.cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:18px}
@media (max-width:900px){.cols{grid-template-columns:1fr}}
ul{padding-left:18px}
.code{white-space:pre-wrap;background:#070c18;border:1px solid var(--line);border-radius:14px;padding:14px}
.badge{display:inline-block;padding:4px 8px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:12px}