:root{--bg:#F2F4FB;--surface:#fff;--ink:#171A26;--muted:#5B6172;--accent:#4C63E8;--teal:#0FA6BB;--border:#E3E7F2}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,sans-serif;line-height:1.75}a{color:#3547B8;text-underline-offset:3px}a:hover{text-decoration-thickness:2px}a:focus-visible{outline:3px solid var(--teal);outline-offset:4px}.wrap{max-width:1080px;margin:auto;padding:0 24px}header{border-bottom:1px solid var(--border)}.nav-in{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}.logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;letter-spacing:-.02em;text-decoration:none;color:var(--ink)}.mark{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--accent),var(--teal));display:grid;place-items:center;color:#fff;font-size:15px;font-weight:800}.nav-links{display:flex;gap:22px;font-size:14px;flex-wrap:wrap}.hero{padding:60px 0 28px;max-width:820px;margin:auto}.eyebrow{color:var(--accent);font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}h1{font-size:clamp(34px,6vw,52px);line-height:1.12;letter-spacing:-.035em;margin:12px 0 18px}.lede,.date{color:var(--muted)}.lede{font-size:18px;max-width:660px}.date{font-size:13px}article{max-width:820px;margin:0 auto 64px;background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:40px 48px;box-shadow:0 8px 30px rgba(23,26,38,.04)}.contents{padding-bottom:24px;border-bottom:1px solid var(--border);margin-bottom:32px}.contents ol{padding-left:22px;columns:2;column-gap:30px}.contents li{break-inside:avoid;margin:4px 0;font-size:14px}section+section{margin-top:34px}h2{font-size:21px;line-height:1.35;letter-spacing:-.02em;margin:0 0 12px}p{margin:12px 0}li{margin:10px 0}ul{padding-left:22px}footer{border-top:1px solid var(--border);padding:28px 0;color:var(--muted);font-size:13px}.foot-in{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}.foot-links{display:flex;gap:20px}.skip{position:absolute;left:16px;top:-100px;background:white;padding:8px}.skip:focus{top:8px}@media(max-width:600px){.wrap{padding:0 18px}.nav-in{align-items:flex-start;padding:18px 0}.nav-links{gap:8px 16px;justify-content:flex-end}.hero{padding-top:36px}article{padding:28px 22px;border-radius:16px}.contents ol{columns:1}.lede{font-size:16px}}