:root {
  color-scheme: light;
  --ink: #171512;
  --muted: #6f6961;
  --paper: #fff;
  --panel: #fff;
  --line: #ddd5ca;
  --accent: #C41230;
  --accent-dark: #8c0d24;
  --green: #246a4b;
  --green-soft: #e4f1e9;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; color: var(--ink); background: var(--paper); font-size: 16px; }
button { font: inherit; cursor: pointer; }
[hidden] { display: none !important; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 20px clamp(18px, 5vw, 64px); border-bottom: 1px solid var(--line); background: #fff; }
.topbar h1 { margin: 3px 0 0; font-size: clamp(22px, 3vw, 32px); }
.eyebrow { margin: 0; color: var(--accent); font-size: 12px; font-weight: 850; letter-spacing: .14em; }
.quiet-link { color: var(--ink); font-weight: 700; text-decoration: none; }
.page { width: min(1180px, calc(100% - 28px)); margin: 28px auto 64px; }
.demo-banner { display: flex; gap: 14px; padding: 16px 18px; border: 1px solid var(--accent); border-radius: 18px; color: var(--accent-dark); background: var(--panel); line-height: 1.55; }
.demo-banner strong { flex: 0 0 auto; }
.status { min-height: 24px; color: var(--muted); line-height: 1.6; }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 18px 0; }
.metric-grid button { padding: 20px; border: 1px solid var(--line); border-radius: 20px; color: var(--ink); background: var(--panel); text-align: left; }
.metric-grid button:hover, .distribution button:hover { border-color: var(--accent); transform: translateY(-1px); }
.metric-grid span, .metric-grid small { display: block; color: var(--muted); }
.metric-grid strong { display: block; margin: 8px 0; font-size: 34px; letter-spacing: -.04em; }
.panel { margin-top: 16px; padding: clamp(20px, 3vw, 30px); border: 1px solid var(--line); border-radius: 24px; background: var(--panel); }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.section-heading h2 { margin: 4px 0 0; font-size: clamp(24px, 3vw, 34px); letter-spacing: -.035em; }
.secondary { border: 1px solid var(--line); border-radius: 999px; padding: 9px 14px; color: var(--ink); background: transparent; font-weight: 750; }
.distribution { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
.distribution button { min-height: 110px; padding: 15px; border: 1px solid var(--line); border-radius: 16px; color: var(--ink); background: #fff; text-align: left; transition: .15s ease; }
.distribution button strong { display: block; margin-top: 10px; font-size: 30px; }
.distribution button.active { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); background: #f8f1eb; }
.filter-pill, .status-pill { display: inline-flex; border-radius: 999px; padding: 7px 10px; font-size: 12px; font-weight: 800; }
.filter-pill { color: var(--accent-dark); background: #f2eee8; }
.status-pill.pass { color: var(--green); background: var(--green-soft); }
.status-pill.fail { color: var(--accent-dark); background: #f2eee8; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 13px 10px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
th { color: var(--muted); font-size: 12px; }
td { font-size: 14px; }
td:first-child { font-weight: 800; }
.row-action { border: 0; border-radius: 999px; padding: 8px 11px; color: white; background: var(--accent); font-weight: 750; }
.empty { padding: 38px 0; color: var(--muted); text-align: center; }
.people-error { color: var(--accent-dark); }
.detail-panel { border-color: #c9b9a9; }
.person-summary { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.person-summary > div { padding: 15px; border-radius: 15px; background: #fff; }
.person-summary span { display: block; color: var(--muted); font-size: 12px; }
.person-summary strong { display: block; margin-top: 5px; font-size: 21px; }
.attempt-list { display: grid; gap: 14px; margin-top: 18px; }
.attempt { overflow: hidden; border: 1px solid var(--line); border-radius: 18px; }
.attempt > header { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 15px 17px; background: #fff; }
.attempt > header h3 { margin: 0; font-size: 17px; }
.attempt > header p { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.question-detail { display: grid; grid-template-columns: minmax(220px, 1fr) minmax(260px, .9fr) 90px; gap: 16px; padding: 15px 17px; border-top: 1px solid var(--line); line-height: 1.5; }
.question-detail:first-of-type { border-top: 0; }
.question-detail p { margin: 0; }
.question-meta { display: block; margin-bottom: 4px; color: var(--muted); font-size: 12px; font-weight: 800; }
.answer-lines { color: var(--muted); font-size: 13px; }
.answer-lines strong { color: var(--ink); }
.points { align-self: center; justify-self: end; font-weight: 800; }
.accuracy-groups { display: grid; gap: 16px; }.accuracy-group { display: grid; gap: 10px; }.accuracy-group h3 { margin: 0; }.accuracy-card { padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }.accuracy-card p { margin: 5px 0; color: var(--muted); }.accuracy-card span { font-size: 13px; font-weight: 700; }

@media (max-width: 780px) {
  .row-action, #close-detail { min-height: 44px; }
  #clear-filter { min-height: 44px; }
  .topbar { padding: 16px; }
  .topbar .eyebrow { display: none; }
  .quiet-link { font-size: 13px; }
  .page { margin-top: 14px; }
  .demo-banner { display: grid; font-size: 14px; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .metric-grid button { padding: 16px; }
  .metric-grid strong { font-size: 28px; }
  .distribution { grid-template-columns: 1fr 1fr; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .person-summary { grid-template-columns: 1fr 1fr; }
  .question-detail { grid-template-columns: 1fr; }
  .attempt > header .status-pill { white-space: nowrap; flex-shrink: 0; }
  .answer-lines { font-size: 16px; }
  .points { justify-self: start; }
}
:where(.accuracy-group,.accuracy-card){min-width:0;overflow-wrap:anywhere}
@media(max-width:780px){.accuracy-group .accuracy-card span{font-size:16px}}