:root{--bg:#f6f7f9;--card:#fff;--ink:#1d232b;--muted:#5b6673;--line:#dde2e8;--brand:#1f5fa8;--warn:#9a5b00;--warnbg:#fff5e0;--bad:#a12a2a;--badbg:#fdecec}
@media (prefers-color-scheme:dark){:root{--bg:#14181d;--card:#1c2229;--ink:#e6eaef;--muted:#9aa5b1;--line:#2c343d;--brand:#6aa5e8;--warn:#f0b35a;--warnbg:#2e2614;--bad:#f08a8a;--badbg:#341c1c}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",sans-serif}
header{background:var(--card);border-bottom:1px solid var(--line);padding:12px 16px;display:flex;gap:16px;align-items:center;flex-wrap:wrap}
header .brand{font-weight:700;margin-right:auto}
header a{color:var(--brand);text-decoration:none}
main{max-width:960px;margin:24px auto;padding:0 16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:20px;margin-bottom:16px}
h1{font-size:22px;margin:0 0 12px}h2{font-size:18px;margin:0 0 8px}
.muted{color:var(--muted)}
.banner{padding:10px 14px;border-radius:6px;margin-bottom:16px;background:var(--warnbg);color:var(--warn)}
.error{background:var(--badbg);color:var(--bad)}
table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:8px;border-bottom:1px solid var(--line);vertical-align:top}
.table-wrap{overflow-x:auto}
label{display:block;margin:10px 0 4px;font-weight:600}
input[type=text],input[type=email],select{width:100%;max-width:420px;padding:8px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--ink);font:inherit}
.checks label{display:inline-flex;gap:6px;font-weight:400;margin-right:16px}
button,.button{display:inline-block;padding:8px 16px;border-radius:6px;border:1px solid var(--brand);background:var(--brand);color:#fff;font:inherit;cursor:pointer;text-decoration:none}
button.secondary{background:transparent;color:var(--brand)}
button.danger{background:var(--bad);border-color:var(--bad)}
form.inline{display:inline}
ul.preview{padding-left:20px}