:root{color-scheme:light dark;--ink:#43536c;--muted:#7b8997;--surface:#fff;--border:#e4eaf4;--link:#315e9f;--top:#dde7fb;--bottom:#f6f9fc;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:linear-gradient(160deg,var(--top),var(--bottom) 70%);min-height:100vh;font-size:17px;line-height:1.75}header{max-width:1040px;margin:auto;padding:28px 24px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}.brand{font-size:22px;font-weight:750;text-decoration:none;display:flex;align-items:center;gap:12px;color:var(--ink)}.mark{display:inline-grid;place-items:center;width:44px;height:44px;background:#4cc8ff;border-radius:12px;color:#163a58;font-size:17px}nav{display:flex;gap:8px 22px;flex-wrap:wrap}a{color:var(--link);text-underline-offset:4px}nav a{font-size:15px;text-decoration:none}nav [aria-current]{text-decoration:underline;font-weight:700}a:hover{text-decoration:underline}a:focus-visible{outline:3px solid #4cc8ff;outline-offset:5px;border-radius:3px}main{max-width:820px;margin:12px auto 32px;padding:46px 54px;background:var(--surface);border:1px solid var(--border);border-radius:18px;box-shadow:0 12px 32px #43536c08}h1{font-size:clamp(28px,5vw,38px);line-height:1.2;letter-spacing:-.025em;margin:0 0 24px}h2{font-size:23px;line-height:1.35;margin:36px 0 12px}p{margin:0 0 18px}li{margin-bottom:10px}footer{text-align:center;padding:0 24px 36px;color:var(--muted);font-size:13px}.skip{position:absolute;top:-100px;background:var(--surface);padding:12px}.skip:focus{top:0}@media(max-width:600px){header{padding:22px 20px;gap:18px}nav{gap:8px 16px}main{margin:4px 12px 24px;padding:28px 22px}h2{font-size:21px}body{font-size:16px}}@media(prefers-color-scheme:dark){:root{--ink:#dfe3e5;--muted:#7b99b7;--surface:#2d3b50;--border:#3b4d64;--link:#8db7ff;--top:#1a293c;--bottom:#152231}}