:root{--bg:#0e0c22;--ink:#f6f4ff;--mute:rgba(236,232,255,.74);--line:rgba(255,255,255,.16);--card:rgba(255,255,255,.08);--acc:#c3b2ff;--accInk:#15122b}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);font:17px/1.6 -apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,sans-serif;background:var(--bg);min-height:100vh;
background-image:radial-gradient(60% 40% at 8% 4%,rgba(132,96,255,.55),transparent 70%),radial-gradient(50% 35% at 98% 28%,rgba(255,112,166,.36),transparent 70%),radial-gradient(60% 40% at 12% 80%,rgba(56,182,226,.34),transparent 70%),radial-gradient(50% 30% at 92% 98%,rgba(255,186,120,.26),transparent 70%);background-attachment:fixed}
a{color:var(--acc)}a:hover{opacity:.85}
.wrap{max-width:860px;margin:0 auto;padding:0 22px}
header.top{position:sticky;top:0;z-index:10;backdrop-filter:blur(22px) saturate(170%);-webkit-backdrop-filter:blur(22px) saturate(170%);background:rgba(14,12,34,.55);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;height:62px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:650;letter-spacing:-.01em}
.brand img{width:30px;height:30px;border-radius:8px}
nav{display:flex;gap:4px;flex-wrap:wrap}nav a{color:var(--mute);text-decoration:none;padding:8px 12px;border-radius:999px;font-size:15px}
nav a.on,nav a:hover{color:var(--ink);background:var(--card)}
.hero{text-align:center;padding:72px 0 36px}
.hero .icon{width:112px;height:112px;border-radius:26px;box-shadow:0 18px 50px rgba(0,0,0,.45)}
h1{font-size:clamp(34px,6vw,54px);line-height:1.05;letter-spacing:-.035em;margin:24px 0 10px}
h1 span{display:block;color:var(--acc)}
.lead{font-size:20px;color:var(--mute);max-width:620px;margin:0 auto 26px}
.btn{display:inline-block;padding:14px 26px;border-radius:999px;background:var(--ink);color:var(--accInk);font-weight:650;text-decoration:none}
.btn.ghost{background:var(--card);color:var(--ink);border:1px solid var(--line);margin-left:8px}
.note{color:var(--mute);font-size:14px;margin-top:18px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:18px 0 40px}
.card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:20px 22px;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:inset 0 1px 0 rgba(255,255,255,.22)}
.card h3{margin:.2em 0 .3em;font-size:19px;letter-spacing:-.01em}.card p{margin:0;color:var(--mute);font-size:15.5px}
.pro{font-size:11px;font-weight:700;letter-spacing:.08em;padding:2px 8px;border-radius:999px;background:var(--acc);color:var(--accInk);vertical-align:middle}
h2{font-size:28px;letter-spacing:-.025em;margin:44px 0 12px}
main.doc{padding:44px 0 70px}main.doc h1{font-size:40px;margin:0 0 6px}main.doc h2{font-size:22px;margin:34px 0 8px;letter-spacing:-.015em}
main.doc p,main.doc li{color:rgba(246,244,255,.9)}main.doc li{margin:5px 0}
.meta{color:var(--mute);font-size:14px;margin:0 0 24px}
table{width:100%;border-collapse:collapse;margin:12px 0;font-size:15px}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}th{color:var(--mute);font-weight:600}
details{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:4px 18px;margin:10px 0}
summary{cursor:pointer;font-weight:620;padding:14px 0;list-style:none}summary::-webkit-details-marker{display:none}
summary::after{content:"+";float:right;color:var(--acc);font-size:22px;line-height:1}details[open] summary::after{content:"–"}
details p{margin:0 0 16px;color:var(--mute)}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 20px}.toc a{font-size:14px;padding:6px 12px;border-radius:999px;background:var(--card);border:1px solid var(--line);text-decoration:none;color:var(--ink)}
footer{border-top:1px solid var(--line);padding:28px 0 46px;color:var(--mute);font-size:14px;text-align:center}footer a{color:var(--mute);margin:0 8px}
code{background:rgba(255,255,255,.1);padding:2px 6px;border-radius:6px;font-size:.92em}
@media (max-width:560px){nav a{padding:6px 9px;font-size:14px}.hero{padding-top:48px}.btn.ghost{margin:10px 0 0}}