:root {
  color: #172033;
  background: #f5f7fb;
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --blue: #0969da;
  --blue-soft: #eaf3ff;
  --border: #d7deea;
  --muted: #69758b;
  --success: #177245;
  --danger: #b42318;
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; }
button, input, select { font: inherit; }
a { color: var(--blue); }
.topbar { display: flex; align-items: end; justify-content: space-between; gap: 28px; padding: 28px max(24px, calc((100vw - 1180px) / 2)); background: #fff; border-bottom: 1px solid var(--border); }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 4px; font-size: clamp(2rem, 4vw, 3rem); }
h2 { margin-bottom: 4px; }
h3 { margin-bottom: 6px; }
.eyebrow, .step { color: var(--blue); font-weight: 750; letter-spacing: .04em; margin-bottom: 4px; }
.muted, small, .section-heading p, .notice { color: var(--muted); }
nav { display: flex; gap: 8px; flex-wrap: wrap; }
nav a { padding: 10px 14px; border-radius: 10px; text-decoration: none; font-weight: 700; }
nav a.active { background: var(--blue-soft); }
.login-shell { min-height: 100vh; align-content: center; max-width: 720px; }
.login-hero { text-align: center; padding-block: clamp(40px, 8vw, 84px); }
.login-hero > p { max-width: 560px; margin-left: auto; margin-right: auto; }
.login-panel form { display: grid; gap: 16px; margin-top: 22px; }
.login-panel form[hidden] { display: none; }
.auth-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.auth-tab.active { background: var(--blue); color: #fff; }
main { width: min(1180px, calc(100% - 32px)); margin: 24px auto 48px; display: grid; gap: 20px; }
.panel, .status-strip { background: #fff; border: 1px solid var(--border); border-radius: 16px; box-shadow: 0 8px 28px rgba(22, 35, 58, .05); }
.panel { padding: clamp(20px, 4vw, 34px); }
.status-strip { display: grid; grid-template-columns: repeat(3, 1fr) auto; align-items: center; gap: 18px; padding: 16px 22px; }
.status-strip span { display: block; color: var(--muted); font-size: .88rem; }
.section-heading { display: flex; justify-content: space-between; gap: 24px; border-bottom: 1px solid #e8ecf3; padding-bottom: 16px; margin-bottom: 20px; }
.grid { display: grid; gap: 18px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
label, fieldset { display: grid; gap: 7px; font-weight: 700; }
fieldset { border: 1px solid var(--border); border-radius: 12px; padding: 12px 16px; grid-template-columns: repeat(2, max-content); align-content: center; }
legend { padding: 0 6px; }
.choice { display: flex; align-items: center; gap: 8px; font-weight: 600; }
input, select { width: 100%; border: 1px solid #bfc9d8; border-radius: 10px; padding: 11px 12px; background: #fff; color: inherit; }
input:focus, select:focus { outline: 3px solid rgba(9,105,218,.18); border-color: var(--blue); }
button, a.secondary { border: 1px solid var(--blue); border-radius: 10px; padding: 10px 15px; background: var(--blue); color: #fff; font-weight: 750; cursor: pointer; text-decoration: none; text-align: center; }
button.secondary, a.secondary { background: #fff; color: var(--blue); }
button:disabled { opacity: .5; cursor: wait; }
.guide { margin-top: 20px; padding: 20px; border: 1px solid #bfd8fa; background: #f7fbff; border-radius: 14px; }
.guide[hidden] { display: none; }
.guide ol { padding-left: 22px; }
.guide-actions, .form-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin: 16px 0; }
.quiet-settings { margin-top: 20px; border-top: 1px solid var(--border); padding-top: 16px; }
.quiet-settings summary { font-weight: 800; cursor: pointer; }
.details-body { margin-top: 16px; }
.message { color: var(--muted); }
.message.success { color: var(--success); font-weight: 700; }
.message.error { color: var(--danger); font-weight: 700; }
.user-list { display: grid; gap: 12px; }
.user-card { border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.user-card summary { cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 16px 18px; }
.user-card summary::-webkit-details-marker { display: none; }
.user-card summary::after { content: "展开"; color: var(--blue); font-weight: 700; }
.user-card[open] summary::after { content: "收起"; }
.user-name { font-size: 1.1rem; font-weight: 800; }
.badges { display: flex; flex-wrap: wrap; gap: 7px; }
.badge { background: #eef2f7; color: #41506a; padding: 4px 9px; border-radius: 999px; font-size: .85rem; }
.badge.on { background: #e8f6ef; color: #146c43; }
.user-detail { border-top: 1px solid var(--border); padding: 18px; display: grid; gap: 10px; }
.user-detail dl { display: grid; grid-template-columns: max-content 1fr; gap: 8px 16px; margin: 0; }
.user-detail dt { color: var(--muted); }
.search-row { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: end; margin-top: 18px; }
.search-results { display: grid; gap: 8px; margin-top: 14px; }
.result-button { width: 100%; text-align: left; background: #fff; color: inherit; border-color: var(--border); }
.result-button:hover { border-color: var(--blue); background: var(--blue-soft); }
.locked { font-size: 1.2rem; font-weight: 800; padding: 14px; background: var(--blue-soft); border-radius: 10px; }
.quote-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin: 14px 0; }
.quote-item { border: 1px solid var(--border); border-radius: 10px; padding: 12px; }
.quote-item span { display: block; color: var(--muted); font-size: .85rem; }
.rules-table { width: 100%; border-collapse: collapse; }
.table-scroll { overflow: auto; }
.rules-table th, .rules-table td { text-align: left; padding: 10px; border-bottom: 1px solid var(--border); }
dialog { width: min(620px, calc(100% - 32px)); border: 0; border-radius: 16px; padding: 24px; box-shadow: 0 24px 80px rgba(0,0,0,.28); }
dialog::backdrop { background: rgba(12, 21, 36, .55); }
pre { white-space: pre-wrap; font: inherit; background: #f4f6fa; padding: 14px; border-radius: 10px; }
code { background: #e9edf4; padding: 2px 5px; border-radius: 5px; }
@media (max-width: 760px) {
  .topbar { align-items: start; flex-direction: column; }
  .grid.two, .status-strip, .search-row { grid-template-columns: 1fr; }
  fieldset { grid-template-columns: 1fr; }
  .user-card summary { align-items: start; flex-direction: column; }
  .rules-table { font-size: .88rem; }
}