:root { --fg: #1f2328; --muted: #6b7280; --line: #e5e7eb; --bg: #f8fafc; --ok: #15803d; --bad: #b91c1c; --accent: #2563eb; }
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; color: var(--fg); background: var(--bg); }
header { display: flex; align-items: center; gap: 24px; padding: 12px 24px; background: #fff; border-bottom: 1px solid var(--line); }
header nav { display: flex; gap: 16px; flex: 1; }
header nav a { color: var(--muted); text-decoration: none; }
header nav a.on { color: var(--fg); font-weight: 600; }
main { max-width: 1100px; margin: 0 auto; padding: 16px 24px 48px; }
h1 { font-size: 20px; } h2 { font-size: 15px; margin: 0 0 8px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 16px; margin-bottom: 16px; }
.narrow { max-width: 360px; }
table { width: 100%; border-collapse: collapse; background: #fff; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; }
label { display: block; margin-bottom: 12px; }
label input:not([type=checkbox]):not([type=radio]), label select { display: block; width: 100%; max-width: 480px; padding: 6px 8px; margin-top: 4px; border: 1px solid var(--line); border-radius: 6px; font: inherit; }
label.check { display: flex; gap: 8px; align-items: center; }
small { display: block; color: var(--muted); }
fieldset { border: 1px solid var(--line); border-radius: 6px; margin-bottom: 12px; }
button, .button { display: inline-block; padding: 6px 14px; border: 0; border-radius: 6px; background: var(--accent); color: #fff; font: inherit; cursor: pointer; text-decoration: none; }
button.secondary { background: #64748b; } button.danger { background: var(--bad); }
button.link { background: none; color: var(--muted); padding: 0; }
form.inline { display: inline; }
.row { display: flex; gap: 12px; }
pre { white-space: pre-wrap; word-break: break-all; background: var(--bg); padding: 12px; border-radius: 6px; }
code { background: var(--bg); padding: 0 4px; border-radius: 4px; }
.flash { padding: 8px 12px; border-radius: 6px; } .flash.ok { background: #dcfce7; } .flash.err { background: #fee2e2; }
.good { color: var(--ok); } .bad { color: var(--bad); } .muted { color: var(--muted); }
.problems li { margin-bottom: 4px; }