:root{color-scheme:dark;--bg:#0b0f19;--surface:#101b29;--text:#e9eff5;--muted:#a9bbcc;--line:#294053;--accent:#40c9ff}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--bg);color:var(--text);font:17px/1.85 Tahoma,"Leelawadee UI",sans-serif}a{color:var(--accent);text-underline-offset:4px}a:hover{color:#bdefff}a:focus-visible{outline:3px solid var(--accent);outline-offset:5px}header{border-bottom:1px solid var(--line)}.bar{max-width:1040px;margin:auto;padding:24px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{font-size:22px;font-weight:700;letter-spacing:.08em;text-decoration:none;color:var(--text)}nav{display:flex;gap:24px;flex-wrap:wrap;font-size:15px}main{max-width:840px;margin:auto;padding:56px 24px 64px}.eyebrow{color:var(--accent);font-size:13px;letter-spacing:.12em;text-transform:uppercase}h1{font-size:clamp(28px,5vw,42px);line-height:1.4;margin:12px 0 16px}h2{font-size:23px;line-height:1.5;margin:36px 0 12px}p{margin:0 0 16px}li{margin-bottom:8px}ul{padding-left:24px}.intro{font-size:19px}.meta{color:var(--muted);font-size:14px}.notice{background:var(--surface);border-left:3px solid var(--accent);padding:20px 24px;margin:28px 0}.toc{border-block:1px solid var(--line);padding:20px 0;margin:32px 0}.toc a{display:inline-block;margin:4px 18px 4px 0;font-size:15px}footer{border-top:1px solid var(--line);color:var(--muted);padding:28px 24px;text-align:center;font-size:14px}.skip{position:absolute;left:16px;top:-80px;background:var(--surface);padding:12px;z-index:1}.skip:focus{top:12px}section{overflow-wrap:anywhere}@media(max-width:600px){.bar{align-items:flex-start;flex-direction:column;gap:12px;padding:20px}nav{gap:16px}main{padding:36px 20px 48px}.notice{padding:16px}h2{font-size:21px}.intro{font-size:18px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}