:root{--bg:#F5F8FC;--ink:#0E1530;--body:#4E5872;--muted:#8590A8;--line:#DDE5EF;--lamp:#2E9BD6;--night:#070B1E}
@media (prefers-color-scheme: dark){:root{--bg:#0B1022;--ink:#EEF3FB;--body:#BCC6DA;--muted:#8792AE;--line:#24304F;--lamp:#6FD0FF;color-scheme:dark}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Geist",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
.top{background:var(--night);color:#F2F6FC}
.top .in,.doc{max-width:760px;margin:0 auto;padding-inline:20px}
.top .in{display:flex;justify-content:space-between;align-items:center;height:68px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit;font-weight:600;font-size:21px;letter-spacing:-0.045em}
.mark{display:grid;grid-template-columns:repeat(2,9px);gap:3px}
.mark i{width:9px;height:9px;border-radius:2.5px;background:currentColor}
.mark i:nth-child(2){background:#5CC8FF;box-shadow:0 0 10px #5CC8FF}
.top a.back{color:#BCC8E0;font-size:15px;text-decoration:none}
.doc{padding-block:56px 80px}
h1{font-size:clamp(34px,5vw,48px);letter-spacing:-0.04em;line-height:1.08;margin:0 0 8px;font-weight:600}
.eff{color:var(--muted);font-size:14px;margin:0 0 36px}
h2{font-size:21px;letter-spacing:-0.02em;margin:36px 0 10px;font-weight:600}
p,li{color:var(--body)}
ul{padding-left:20px}
a{color:var(--lamp)}
.note{border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin-bottom:28px;font-size:15.5px}
footer{border-top:1px solid var(--line);padding:28px 20px;text-align:center;color:var(--muted);font-size:13.5px}