:root{--ink:#0a0a0a;--muted:#6b7280;--line:#e6e7eb;--bg:#fff;--soft:#f7f8f7;--lime:#ccff00}
@media (prefers-color-scheme: dark){:root{--ink:#f2f4f0;--muted:#9aa1b1;--line:#242621;--bg:#0a0a0a;--soft:#141612}}
*{box-sizing:border-box}
body{margin:0;font:16px/1.65 -apple-system,"SF Pro Text","Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
.wrap{max-width:780px;margin:0 auto;padding:0 20px 70px}
a{color:var(--ink);text-decoration:none;border-bottom:2px solid var(--lime)}
a.logo{border-bottom:none}
header{border-bottom:1px solid var(--line);margin-bottom:34px}
.nav{max-width:780px;margin:0 auto;padding:0 20px;display:flex;align-items:center;height:66px;gap:14px;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:21px;letter-spacing:-.5px;color:var(--ink)}
.logo .m{width:34px;height:34px;border-radius:50%;background:var(--lime);color:#0a0a0a;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:900}
.nav-links{display:flex;gap:16px;font-size:14px}
.nav-links a{color:var(--muted);border:none}
.nav-links a:hover{color:var(--ink)}
h1{font-size:clamp(26px,4vw,34px);letter-spacing:-1.1px;margin:0 0 8px;font-weight:900}
h2{font-size:19px;margin:34px 0 10px;font-weight:800}
h3{font-size:16.5px;margin:22px 0 8px;font-weight:750}
.date{color:var(--muted);margin:0 0 8px;font-size:14.5px}
.toc{background:var(--soft);border:1px solid var(--line);border-radius:16px;padding:18px 22px;margin:26px 0}
.toc ol{margin:0;padding-left:20px;columns:2;column-gap:26px}
@media(max-width:640px){.toc ol{columns:1}}
.toc li{margin:4px 0;font-size:14.5px}
.toc a{border:none;color:var(--muted)}
.toc a:hover{color:var(--ink)}
.key{background:var(--lime);color:#0a0a0a;border-radius:16px;padding:20px 24px;margin:24px 0;font-size:15.5px}
.key b{font-weight:800}
table{width:100%;border-collapse:collapse;font-size:14.5px;margin:14px 0}
th,td{padding:11px 10px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:800;font-size:13.5px;color:var(--muted)}
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:14px;margin:16px 0}
ul,ol{padding-left:22px}li{margin:6px 0}
.note{border:1px solid var(--line);background:var(--soft);border-radius:14px;padding:16px 18px;font-size:14.5px;color:var(--muted);margin:18px 0}
.en{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13.5px;background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:12px 14px;display:block;margin:10px 0}
footer{padding:36px 0;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
footer a{color:var(--muted)}
.req{font-size:14.5px;color:var(--muted)}