:root{color-scheme:light;--ink:#172126;--muted:#5e6b70;--line:#dce6e4;--surface:#fff;--soft:#edf7f4;--accent:#1d8b80;--bg:#f5f8f7}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"HarmonyOS Sans", "Noto Sans SC", "Microsoft YaHei", sans-serif;line-height:1.8}main{max-width:920px;margin:0 auto;padding:32px 22px 72px}.top{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:28px}.brand{font-weight:700;font-size:22px;letter-spacing:.04em}.links{display:flex;gap:14px;flex-wrap:wrap}.links a{color:var(--accent);text-decoration:none;font-size:14px}.card{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:34px 38px;box-shadow:0 12px 30px rgba(23,33,38,.05)}h1{font-size:32px;line-height:1.3;margin:0 0 10px}h2{font-size:21px;margin:30px 0 8px}h3{font-size:17px;margin:22px 0 4px}p,li{font-size:16px}p.meta{color:var(--muted);font-size:14px;margin:0 0 20px}.notice{background:var(--soft);border-left:4px solid var(--accent);padding:14px 16px;border-radius:10px;margin:20px 0}.footer{color:var(--muted);font-size:13px;margin-top:22px}@media(max-width:640px){main{padding:18px 12px 48px}.card{padding:24px 20px;border-radius:16px}h1{font-size:27px}p,li{font-size:15px}}