:root{color-scheme:light dark;--bg:#eef8ff;--card:rgba(255,255,255,.86);--text:#102238;--muted:#597085;--line:rgba(68,129,172,.18);--accent:#087fef}*{box-sizing:border-box}body{margin:0;min-height:100vh;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:linear-gradient(155deg,#f7fcff,#e8f6ff);color:var(--text);line-height:1.65}.shell{width:min(820px,calc(100% - 32px));margin:0 auto;padding:32px 0 64px}.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font-weight:850;letter-spacing:.04em}.brand img{width:42px;height:42px;border-radius:13px}.card{margin-top:24px;padding:clamp(22px,5vw,48px);border:1px solid var(--line);border-radius:28px;background:var(--card);box-shadow:0 18px 60px rgba(27,76,116,.1);backdrop-filter:blur(18px)}h1{font-size:clamp(2rem,6vw,3.3rem);line-height:1.05;margin:0 0 12px}h2{margin:32px 0 8px;font-size:1.25rem}p,li{color:var(--muted)}a{color:var(--accent)}.updated{font-size:.92rem}.back{display:inline-flex;margin-top:28px;font-weight:750;text-decoration:none}@media(prefers-color-scheme:dark){:root{--bg:#10283b;--card:rgba(27,51,69,.91);--text:#f2f8fc;--muted:#bfd0dc;--line:rgba(157,199,226,.13);--accent:#68cafa}body{background:#10283b}.card{box-shadow:none}}