:root{--primary:#2B4C6F;--secondary:#7B9EBF;--tertiary:#D4E4ED;--neutral:#F6F9FA;--ink:#16283D;--muted:#5F6F7E;--border:#E3EAEE;--card:#fff}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--neutral);color:var(--ink);font:16px/1.75 Inter,-apple-system,system-ui,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--primary)}
header{position:sticky;top:0;z-index:5;background:rgba(246,249,250,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.bar{max-width:960px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);text-decoration:none}
.brand img{width:32px;height:32px;border-radius:8px}
nav{display:flex;gap:4px;flex-wrap:wrap}
nav a{padding:6px 12px;border-radius:999px;color:var(--muted);text-decoration:none;font-size:.92rem}
nav a:hover,nav a[aria-current]{background:var(--tertiary);color:var(--primary)}
.hero{background:radial-gradient(1200px 400px at 50% -10%,#3d6a99 0,var(--primary) 45%,var(--ink) 100%);color:#F6F9FA;text-align:center;padding:72px 16px 88px}
.hero img{width:96px;height:96px;border-radius:24px;box-shadow:0 12px 40px rgba(0,0,0,.35)}
.hero h1{font-size:clamp(2rem,6vw,3.2rem);margin:24px 0 8px;letter-spacing:-.02em}
.hero p{max-width:520px;margin:0 auto;color:var(--tertiary);font-size:1.1rem}
.cards{max-width:960px;margin:-48px auto 0;padding:0 16px;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:24px;text-decoration:none;color:var(--ink);box-shadow:0 8px 24px rgba(22,40,61,.06);transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(22,40,61,.12)}
.card b{display:block;font-size:1.05rem;margin:8px 0 4px}.card span{color:var(--muted);font-size:.92rem}.card i{font-style:normal;font-size:1.6rem}
.features{max-width:960px;margin:56px auto 0;padding:0 16px;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.features div{padding:4px 0}.features h3{margin:0 0 4px}.features p{margin:0;color:var(--muted)}
main.doc{max-width:760px;margin:32px auto;padding:40px clamp(20px,5vw,48px);background:var(--card);border:1px solid var(--border);border-radius:24px;box-shadow:0 8px 24px rgba(22,40,61,.05)}
.doc h1{margin:0 0 4px;font-size:2rem;letter-spacing:-.02em}
.doc h2{margin:2.2rem 0 .5rem;font-size:1.15rem;padding-left:12px;border-left:4px solid var(--secondary)}
.doc p,.doc li{color:#2c3e50}.doc ul{padding-left:1.2rem}.doc li{margin:.4rem 0}
.mute{color:var(--muted);font-size:.9rem}
footer{max-width:960px;margin:40px auto 0;padding:24px 16px 48px;text-align:center;color:var(--muted);font-size:.9rem}
@media (prefers-color-scheme:dark){
:root{--neutral:#0e1a29;--card:#16283D;--ink:#F6F9FA;--muted:#9fb1c2;--border:#243a52;--tertiary:#243a52;--primary:#9fc1e3}
header{background:rgba(14,26,41,.85)}.doc p,.doc li{color:#d5dfe8}.hero{--primary:#2B4C6F}}