:root{color-scheme:light dark;--fg:#1d2330;--muted:#5b6475;--bg:#f6f7f9;--card:#fff;--line:#dfe3ea;--accent:#2557c7;--accent-d:#1c449c;--focus:#1c449c;--shadow:rgba(16,24,40,.06)}
@media (prefers-color-scheme:dark){:root{--fg:#e6e8ee;--muted:#a3a9b7;--bg:#0f1115;--card:#171a21;--line:#2a2f3a;--accent:#7aa2ff;--accent-d:#9dbbff;--focus:#7aa2ff;--shadow:rgba(0,0,0,.4)}}
*,*::before,*::after{box-sizing:border-box}
body{font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;margin:0;color:var(--fg);background:var(--bg)}
a{color:var(--accent)}a:hover{color:var(--accent-d)}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}
header{background:var(--card);border-bottom:1px solid var(--line);display:flex;flex-wrap:wrap;gap:8px 24px;align-items:center;justify-content:space-between;padding:12px max(20px,calc((100% - 880px)/2))}
.brand{font-weight:700;font-size:18px;color:var(--fg);text-decoration:none}
nav ul{display:flex;gap:4px 18px;flex-wrap:wrap;list-style:none;margin:0;padding:0}nav a{text-decoration:none;color:var(--muted);padding:4px 0}nav a:hover{color:var(--accent);text-decoration:underline}nav a[aria-current]{color:var(--fg);font-weight:600}
main{max-width:880px;margin:0 auto;padding:28px 20px}
h1{font-size:clamp(26px,4vw,34px);line-height:1.2;margin:0 0 10px}h2{font-size:20px;margin:28px 0 10px}
.lead{color:var(--muted);margin:0 0 20px;max-width:70ch}
.tools{list-style:none;padding:0;margin:0;display:grid;gap:16px}
.tools li{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;box-shadow:0 1px 3px var(--shadow)}
.tools a{font-size:19px;font-weight:600}.tools p{margin:4px 0 0;color:var(--muted)}
nav a,.brand{display:inline-flex;align-items:center;min-height:44px}
.tools li{position:relative}.tools a::after{content:"";position:absolute;inset:0;border-radius:14px}
.mt-notice{margin:0 0 16px;padding:8px 14px;border-radius:8px;background:#fdf3d2;color:#5a4200;font-size:14px}.mt-notice a{color:inherit;margin-left:.5em;display:inline-flex;align-items:center;min-height:44px;padding:0 8px}
@media (prefers-color-scheme:dark){.mt-notice{background:#2a2410;color:#f2d27a}}