:root{color-scheme:light;--ink:#173148;--muted:#526779;--blue:#135fc2;--line:#dce5ec;--paper:#fff;--wash:#f3f7fa}
*{box-sizing:border-box}body{margin:0;background:var(--wash);color:var(--ink);font-family:system-ui,-apple-system,"Thonburi","Tahoma",sans-serif;font-size:17px;line-height:1.85;overflow-wrap:anywhere}
a{color:var(--blue);text-underline-offset:.22em}a:hover{text-decoration-thickness:2px}a:focus-visible{outline:3px solid #ffbd4b;outline-offset:5px}header,main,footer{max-width:880px;margin:auto;padding:24px}header{display:flex;gap:20px;justify-content:space-between;align-items:center;flex-wrap:wrap}.brand{font-weight:800;text-decoration:none;letter-spacing:.06em}.brand span{color:var(--blue)}nav{display:flex;gap:20px;flex-wrap:wrap;font-size:.9rem}main{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:40px;margin-bottom:24px}h1,h2,h3{line-height:1.45;letter-spacing:-.02em}h1{font-size:clamp(2rem,6vw,3rem);margin:.4em 0}h2{font-size:1.35rem;margin-top:2em}p,ul{margin:.8em 0}li+li{margin-top:.45em}.eyebrow{color:var(--blue);font-size:.8rem;font-weight:750;letter-spacing:.12em}.lead{font-size:1.2rem}.note{background:#edf4ff;border-left:3px solid var(--blue);padding:16px 20px;border-radius:0 8px 8px 0}.review{background:#fff7e5;border:1px solid #edd7a7;padding:10px 16px;font-size:.9rem;border-radius:8px}.muted,footer{color:var(--muted);font-size:.9rem}.actions{display:flex;gap:18px;flex-wrap:wrap;margin:28px 0}.button{display:inline-block;padding:10px 18px;border-radius:8px;background:var(--blue);color:white;text-decoration:none;font-weight:650}.divider{border:0;border-top:1px solid var(--line);margin:30px 0}code{font-size:.9em}footer{padding-top:0}.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:12px;background:white;padding:8px;z-index:2}@media(max-width:600px){h1{font-size:1.65rem}header,footer{padding:20px}main{margin:0 12px 20px;padding:24px 20px;border-radius:12px}nav{gap:14px}.lead{font-size:1.1rem}}@media print{body,main{background:white}header,nav,.review,.actions{display:none}main{border:0;margin:0;padding:0}a{color:inherit}footer{padding:0}}
