:root{
  --bg:#0b1220; --panel:#0e1628; --card:#101b31; --soft:#16213e;
  --fg:#eaf2ff; --muted:#b6c2df; --accent:#49e3a5; --accent2:#81a7ff;
  --shadow:0 10px 30px rgba(0,0,0,.35)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial;background:var(--bg);color:var(--fg);line-height:1.7}
a{color:var(--accent);text-decoration:none}
a:hover{opacity:.95}
.container{max-width:1180px;margin:0 auto;padding:20px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.card{background:var(--card);border:1px solid #223056;border-radius:18px;padding:20px;box-shadow:var(--shadow)}
h1,h2,h3{line-height:1.2}
.kicker{color:var(--muted);font-weight:800;font-size:12px;text-transform:uppercase;letter-spacing:.14em}
.btn{display:inline-block;background:linear-gradient(90deg,var(--accent),var(--accent2));color:#08111f;padding:12px 16px;border-radius:12px;font-weight:800}
.btn.secondary{background:#0d1a31;color:#cfe1ff;border:1px solid #2e3f6b}
.badge{display:inline-block;border:1px solid #2e3f6b;color:#cfe1ff;padding:3px 10px;border-radius:999px;font-size:12px}
nav{position:sticky;top:0;background:rgba(8,17,31,.85);backdrop-filter:blur(10px);border-bottom:1px solid #1b2746;z-index:60}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 0}
.logo{font-weight:900;letter-spacing:.5px}
.menu{display:flex;gap:12px;align-items:center}
.menu a{padding:8px 12px;border-radius:10px}
.menu a:hover{background:#0f1b32;text-decoration:none}
.hamburger{display:none;background:none;border:0;font-size:26px;line-height:1;padding:8px;color:#cfe1ff}
/* Overlay drawer */
.nav-overlay{position:fixed;inset:0;background:rgba(8,17,31,.98);display:none;z-index:100;align-items:center;justify-content:center}
.nav-overlay.active{display:flex;animation:fadeIn .15s ease-out}
.nav-overlay .nav-sheet{display:flex;flex-direction:column;gap:16px;text-align:center}
.nav-overlay a{color:#eaf2ff;font-size:22px;padding:10px 16px;border-radius:12px;border:1px solid #23345f;background:#0f1b32}
.nav-overlay a:hover{background:#112045}
@keyframes fadeIn{from{opacity:0;transform:scale(0.98)}to{opacity:1;transform:scale(1)}}

input[type="search"]{width:100%;padding:10px 12px;border:1px solid #2b3e6b;background:#0d1a31;color:#cfe1ff;border-radius:12px}
.hero{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:center}
.hero .card{background:linear-gradient(180deg,#0f1a33,#0d172c)}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.table{width:100%;border-collapse:separate;border-spacing:0 8px}
.table tr{background:#0f1a33;box-shadow:var(--shadow)}
.table td,.table th{padding:12px 16px}
code,kbd{background:#0e1830;border:1px solid #283a67;border-radius:6px;padding:2px 6px;color:#cfe1ff}
footer{border-top:1px solid #1b2746;margin-top:48px}
ul.checks{list-style:none;padding:0;margin:.5rem 0}
ul.checks li{padding-left:24px;position:relative;margin:6px 0}
ul.checks li::before{content:"✔";position:absolute;left:0;top:0;color:var(--accent)}
blockquote{border-left:4px solid var(--accent);padding-left:12px;margin:14px 0;color:#cfe1ff;background:#0f1a33}
hr{border:0;border-top:1px solid #223056;margin:24px 0}
.cat-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 14px}
.cat-tabs a{border:1px solid #2e3f6b;border-radius:999px;padding:6px 10px;color:#cfe1ff}
.cat-tabs a.active{background:linear-gradient(90deg,var(--accent),var(--accent2));color:#08111f;border-color:transparent}
@media (max-width: 940px){
  .hero{grid-template-columns:1fr}
  .menu{display:none}
  .hamburger{display:block}
}