:root{color-scheme:light;--bg:#f4f6fa;--surface:#fff;--text:#172235;--muted:#526277;--border:#cbd5e1;--accent:#4338ca}html[data-dark]{color-scheme:dark;--bg:#101827;--surface:#1b283b;--text:#edf2fb;--muted:#b5c2d5;--border:#475971;--accent:#aaa5ff}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,"Microsoft Yahei",sans-serif}header{display:flex;align-items:center;justify-content:space-between;padding:22px 5vw;border-bottom:1px solid var(--border);background:var(--surface)}header strong{font-size:24px}small{font-size:14px;color:var(--muted);font-weight:400;margin-left:12px}main{max-width:1100px;margin:40px auto;padding:0 24px}.intro{margin-bottom:30px}h1{font-size:36px;margin:8px 0}h2{font-size:22px;margin:0 0 20px}p,.eyebrow{color:var(--muted)}.card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:28px;margin:20px 0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}.grid .card{margin:0}label{display:block;margin:14px 0}input{display:block;width:100%;padding:12px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text);font:inherit;margin-top:6px}#auth{max-width:600px}button,.link{font:inherit;border:1px solid var(--accent);border-radius:8px;padding:9px 16px;cursor:pointer;background:var(--accent);color:var(--bg);text-decoration:none}button.secondary,nav button,#theme{background:var(--surface);color:var(--text);border-color:var(--border)}button:disabled{opacity:.6;cursor:wait}button:focus-visible,input:focus-visible,a:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.actions,.toolbar,nav{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.toolbar{justify-content:space-between}nav{margin-bottom:24px}nav button[aria-current=page]{border-color:var(--accent);color:var(--accent)}#notice:not(:empty){padding:16px;border:1px solid var(--border);border-radius:10px;background:var(--surface);margin:20px 0}footer{padding:30px;text-align:center;color:var(--muted);font-size:13px}code{overflow-wrap:anywhere}@media(max-width:600px){main{margin-top:24px;padding:0 16px}h1{font-size:28px}.card{padding:20px}header small{display:block;margin:0}}

input[type=checkbox]{display:inline-block;width:auto;margin:0 10px 0 0}fieldset{border:1px solid var(--border);border-radius:8px;padding:16px}

select,textarea{display:block;width:100%;padding:10px;background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:8px;font:inherit}textarea{min-height:90px}details{margin-bottom:20px}
[hidden]{display:none!important}
