:root {
  color-scheme: light;
  --bg: #f7f7f4;
  --surface: #ffffff;
  --ink: #111318;
  --muted: #6f7480;
  --faint: #a8adb6;
  --line: #dfe2e6;
  --blue: #356fe8;
  --blue-soft: #eef3fd;
  --red: #c85d63;
  --green: #3f7f68;
  --sidebar: #f0f1f1;
  --radius: 14px;
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); min-width: 320px; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, input:focus-visible, a:focus-visible { outline: 3px solid color-mix(in srgb, var(--blue) 28%, transparent); outline-offset: 2px; }

.app-shell { min-height: 100vh; display: grid; grid-template-columns: 236px 1fr; }
.sidebar { position: sticky; top: 0; height: 100vh; padding: 34px 24px 26px; background: var(--sidebar); border-right: 1px solid var(--line); display: flex; flex-direction: column; }
.brand { color: var(--ink); text-decoration: none; display: flex; align-items: center; gap: 12px; font-weight: 650; font-size: 21px; letter-spacing: -0.02em; }
.brand-mark { width: 32px; height: 32px; border-radius: 9px; display: grid; place-items: center; background: var(--ink); color: white; font-size: 14px; }
.nav-list { margin-top: 54px; display: grid; gap: 7px; }
.nav-item { min-height: 44px; padding: 0 13px; border-radius: 9px; display: flex; align-items: center; justify-content: space-between; color: var(--muted); text-decoration: none; font-size: 14px; }
.nav-item small { color: var(--faint); font-size: 10px; letter-spacing: .08em; }
.nav-item:hover { background: rgba(255,255,255,.58); color: var(--ink); }
.nav-item.active { background: var(--surface); color: var(--ink); box-shadow: 0 1px 0 rgba(17,19,24,.04); }
.connection-card { margin-top: auto; padding: 15px 14px; border-top: 1px solid var(--line); color: var(--faint); display: grid; gap: 6px; font-size: 11px; }
.connection-card div { display: flex; align-items: center; gap: 8px; font-size: 10px; font-weight: 650; letter-spacing: .08em; color: var(--muted); }
.connection-card span:last-child { color: var(--faint); }
.evaluation-link { min-width: 122px; min-height: 40px; padding: 7px 9px 7px 12px; border: 1px solid #cfd4dc; border-radius: 8px; display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--muted); text-decoration: none; font-size: 9px; font-weight: 700; letter-spacing: .07em; transition: border-color .16s ease, background .16s ease, color .16s ease; }
.evaluation-link:hover { border-color: #aebee4; background: var(--blue-soft); color: var(--blue); }
.evaluation-link strong { width: 24px; height: 23px; display: grid; place-items: center; border-radius: 5px; background: var(--blue-soft); color: var(--blue); font-size: 10px; }
.status-dot { width: 6px; height: 6px; border-radius: 99px; background: var(--green); }

.workspace { padding: 0 4.8vw 72px; min-width: 0; }
.topbar { height: 86px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.topbar > div { display: flex; align-items: center; gap: 17px; }
.eyebrow { margin: 0; color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .1em; }
.eyebrow.blue { color: var(--blue); }
.dataset-label { color: var(--faint); font-size: 12px; }
.period-control { border: 1px solid var(--line); border-radius: 9px; padding: 9px 10px 9px 13px; background: var(--surface); color: var(--muted); cursor: default; font-size: 12px; }
.period-control span { margin-left: 9px; padding: 4px 7px; background: var(--blue-soft); border-radius: 5px; color: var(--blue); font-weight: 700; }
.hero { padding: 42px 0 28px; display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; }
.hero h1 { margin: 10px 0 8px; max-width: 830px; font-size: clamp(36px, 3.6vw, 56px); line-height: 1; font-weight: 620; letter-spacing: -.046em; }
.hero-copy { max-width: 660px; margin: 0; color: var(--muted); font-size: 16px; line-height: 1.55; }
.hero-meta { min-width: 140px; padding-left: 19px; border-left: 2px solid var(--blue); display: grid; gap: 4px; }
.hero-meta span, .hero-meta small { color: var(--muted); font-size: 11px; }
.hero-meta strong { font-size: 18px; font-weight: 620; }

.ask-panel { padding: 20px 22px 16px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 8px 28px rgba(17,19,24,.035); }
.ask-panel label { display: block; margin-bottom: 10px; color: var(--muted); font-size: 12px; font-weight: 600; }
.question-control { display: flex; gap: 10px; }
.question-control input { width: 100%; height: 52px; border: 1px solid #ccd1d9; border-radius: 10px; background: #fbfbfa; padding: 0 16px; color: var(--ink); }
.question-control input::placeholder { color: var(--faint); }
.question-control button { min-width: 116px; border: 0; border-radius: 9px; background: var(--blue); color: white; font-weight: 600; cursor: pointer; }
.question-control button:hover { background: #2e64d7; }
.question-control button:disabled { opacity: .7; cursor: wait; }
.try-label { margin-top: 16px; color: var(--faint); font-size: 9px; font-weight: 700; letter-spacing: .1em; }
.suggestions { margin-top: 8px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.suggestions button { min-width: 0; height: 50px; padding: 0 12px; border: 0; border-left: 1px solid var(--line); background: transparent; color: var(--muted); text-align: left; cursor: pointer; display: grid; grid-template-columns: 1fr 18px; align-items: center; transition: background .16s ease, color .16s ease; }
.suggestions button:first-child { border-left: 0; }
.suggestions button span { grid-column: 1; color: var(--blue); font-size: 8px; font-weight: 750; letter-spacing: .1em; }
.suggestions button strong { grid-column: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); font-size: 10px; font-weight: 520; }
.suggestions button i { grid-column: 2; grid-row: 1 / 3; color: var(--faint); font-size: 11px; font-style: normal; }
.suggestions button:hover { color: var(--blue); background: #f8faff; }

.answer-panel { scroll-margin-top: 18px; margin-top: 18px; padding: 27px 30px 24px; background: var(--surface); border: 1px solid #d8dde5; border-radius: var(--radius); box-shadow: 0 12px 36px rgba(17,19,24,.045); }
.loading-panel { min-height: 190px; display: grid; place-items: center; }
.analysis-loading { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 12px; }
.analysis-loading span { width: 15px; height: 15px; border: 1px solid #cbd2dc; border-top-color: var(--blue); border-radius: 50%; animation: spin .8s linear infinite; }
.analysis-loading p { margin: 0; }
@keyframes spin { to { transform: rotate(360deg); } }
.finding-block { display: grid; grid-template-columns: minmax(205px, .52fr) minmax(0, 1.48fr); column-gap: 46px; align-items: end; }
.finding-meta { grid-column: 1 / -1; display: flex; justify-content: space-between; gap: 24px; padding-bottom: 15px; border-bottom: 1px solid var(--line); }
.asked-question { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.answer-headline { padding-top: 25px; }
.answer-headline strong { display: block; font-size: clamp(48px, 5vw, 76px); line-height: .9; letter-spacing: -.055em; font-weight: 620; }
.answer-headline span { display: block; margin-top: 13px; color: var(--ink); font-size: 14px; font-weight: 620; }
.answer-headline small { display: block; margin-top: 3px; color: var(--faint); font-size: 10px; }
.answer-summary { align-self: center; max-width: 760px; margin: 25px 0 0; font-size: clamp(22px, 2.15vw, 33px); line-height: 1.16; letter-spacing: -.032em; font-weight: 610; }
.evidence-section { margin-top: 4px; border-top: 1px solid var(--line); padding-top: 23px; }
.evidence-grid { margin-top: 18px; display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
.evidence-grid article { position: relative; min-height: 112px; padding: 5px 21px 8px; border-right: 1px solid var(--line); display: grid; align-content: start; }
.evidence-grid article:first-child { padding-left: 0; }
.evidence-grid article:last-child { border-right: 0; }
.evidence-grid article > span:not(.evidence-index) { margin-top: 14px; color: var(--muted); font-size: 12px; }
.evidence-index { color: var(--blue); font-size: 10px; font-weight: 700; }
.evidence-grid strong { margin-top: 8px; font-size: 25px; letter-spacing: -.03em; }
.evidence-grid small { margin-top: 7px; color: var(--muted); line-height: 1.35; }
.decision-grid { margin-top: 27px; border-top: 1px solid var(--line); display: grid; grid-template-columns: 1.12fr .88fr; }
.decision-grid article { min-height: 180px; padding: 27px 30px 23px 0; }
.decision-grid article + article { padding-left: 30px; border-left: 1px solid var(--line); }
.decision-grid h3 { max-width: 640px; margin: 17px 0 8px; font-size: 21px; line-height: 1.3; font-weight: 610; letter-spacing: -.02em; }
.decision-grid p:not(.eyebrow) { color: var(--muted); line-height: 1.5; }
.decision-grid .recommendation { background: #f4f6fa; margin-right: -30px; padding-right: 30px; padding-left: 30px; }
.trace { margin-top: 22px; border-top: 1px solid var(--line); }
.trace summary { padding: 19px 0 0; list-style: none; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-size: 12px; font-weight: 610; }
.trace summary::-webkit-details-marker { display: none; }
.trace summary small { color: var(--muted); font-weight: 400; }
.trace-rail { margin-top: 22px; display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; }
.trace-rail article { position: relative; padding: 0 18px 0 0; }
.trace-rail article:not(:last-child)::after { content: ""; position: absolute; top: 14px; left: 30px; right: 8px; height: 1px; background: #a9bdef; }
.trace-rail article > span { position: relative; z-index: 1; width: 29px; height: 29px; display: grid; place-items: center; border-radius: 50%; background: var(--blue); color: white; font-size: 9px; }
.trace-rail article div { margin-top: 17px; }
.trace-rail strong { font-size: 9px; letter-spacing: .06em; }
.trace-rail strong i { display: inline-block; margin-top: 5px; padding: 3px 4px; border: 1px solid #d7dce5; border-radius: 4px; color: var(--faint); font-size: 7px; font-style: normal; font-weight: 650; letter-spacing: .04em; }
.trace-rail p { min-height: 55px; margin: 7px 0 0; color: var(--muted); font-size: 11px; line-height: 1.45; }

.uncertain-state { max-width: 680px; padding: 20px 0 24px; }
.uncertain-state .eyebrow { color: var(--red); }
.uncertain-state h2 { margin: 14px 0 9px; font-size: 28px; letter-spacing: -.03em; }
.uncertain-state > p:not(.eyebrow) { color: var(--muted); line-height: 1.55; }
.uncertain-state button { margin-top: 18px; border: 1px solid var(--line); border-radius: 8px; padding: 9px 12px; background: white; color: var(--ink); cursor: pointer; }

.metric-strip { margin-top: 38px; padding: 23px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); display: grid; grid-template-columns: repeat(5, 1fr); }
.metric-strip article { min-width: 0; padding: 0 23px; border-right: 1px solid var(--line); }
.metric-strip article:first-child { padding-left: 0; }
.metric-strip article:last-child { border: 0; }
.metric-strip span { display: block; min-height: 30px; color: var(--muted); font-size: 12px; line-height: 1.3; }
.metric-strip strong { display: block; margin: 5px 0 7px; font-size: clamp(23px, 2.2vw, 35px); font-weight: 620; letter-spacing: -.03em; }
.metric-strip small { font-size: 11px; color: var(--muted); }
[data-tone="negative"] { color: var(--red) !important; }
[data-tone="positive"] { color: var(--green) !important; }

.analytics-grid { margin-top: 24px; display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(320px, .9fr); gap: 18px; }
.chart-panel { min-height: 280px; padding: 21px; border: 1px solid var(--line); background: color-mix(in srgb, var(--surface) 78%, var(--bg)); border-radius: var(--radius); }
.panel-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.panel-heading h2 { margin: 7px 0 0; font-size: 19px; font-weight: 620; letter-spacing: -.02em; }
.panel-heading > span { font-size: 17px; font-weight: 650; color: var(--blue); }
#trend-chart { display: block; width: 100%; height: 195px; margin-top: 12px; }
.platform-bars { margin-top: 32px; display: grid; gap: 21px; }
.bar-row { display: grid; grid-template-columns: 1fr 65px; gap: 10px; }
.bar-row > div:first-child { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; color: var(--muted); font-size: 13px; }
.bar-row strong { color: var(--ink); font-size: 14px; }
.bar-track { height: 8px; background: #eef0f2; border-radius: 99px; overflow: hidden; }
.bar-fill { display: block; height: 100%; background: #7f9fe8; border-radius: 99px; }
.bar-fill.risk { background: var(--red); }
.bar-row small { text-align: right; color: var(--muted); font-size: 11px; }

.back-link { color: var(--muted); text-decoration: none; font-size: 12px; }
.back-link:hover { color: var(--blue); }
.evaluation-workspace { padding-bottom: 90px; }
.eval-hero { padding: 52px 0 34px; display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; }
.eval-hero h1 { max-width: 740px; margin: 13px 0 11px; font-size: clamp(38px, 4.2vw, 62px); line-height: 1.01; letter-spacing: -.045em; font-weight: 620; }
.eval-hero p:last-child { max-width: 650px; margin: 0; color: var(--muted); line-height: 1.55; }
.eval-hero button { min-width: 186px; height: 52px; border: 0; border-radius: 10px; background: var(--blue); color: white; cursor: pointer; font-weight: 620; }
.eval-hero button span { display: block; margin-top: 2px; font-size: 9px; opacity: .72; }
.eval-hero button:disabled { cursor: wait; opacity: .7; }
.eval-facts { display: grid; grid-template-columns: repeat(3, 1fr); margin-bottom: 24px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.eval-facts article { padding: 19px 22px; border-right: 1px solid var(--line); display: grid; gap: 5px; }
.eval-facts article:first-child { padding-left: 0; }
.eval-facts article:last-child { border-right: 0; }
.eval-facts strong { font-size: 20px; font-weight: 620; letter-spacing: -.02em; }
.eval-facts span { color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .06em; }
.eval-status { padding: 16px 0; border-bottom: 1px solid var(--line); }
.eval-status > div:first-child { display: flex; align-items: center; justify-content: space-between; color: var(--muted); font-size: 12px; }
.eval-status strong { color: var(--ink); }
.progress-track { height: 3px; margin-top: 13px; background: #e4e6e8; overflow: hidden; }
.progress-track span { display: block; width: 0; height: 100%; background: var(--blue); transition: width .18s ease; }
.eval-metrics { margin: 30px 0 44px; display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); }
.eval-metrics article { padding: 0 23px 24px; border-right: 1px solid var(--line); }
.eval-metrics article:first-child { padding-left: 0; }
.eval-metrics article:last-child { border-right: 0; }
.eval-metrics span { color: var(--muted); font-size: 11px; }
.eval-metrics strong { display: block; margin: 9px 0 5px; color: var(--ink); font-size: 38px; letter-spacing: -.04em; }
.eval-metrics small { color: var(--faint); }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; margin-bottom: 18px; }
.section-heading h2 { margin: 7px 0 0; font-size: 24px; letter-spacing: -.025em; }
.section-heading > span { color: var(--muted); font-size: 12px; }
.all-results { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.all-results > summary { min-height: 58px; list-style: none; display: flex; align-items: center; justify-content: space-between; color: var(--muted); cursor: pointer; font-size: 12px; }
.all-results > summary::-webkit-details-marker { display: none; }
.all-results > summary strong { width: 26px; height: 24px; display: grid; place-items: center; border-radius: 5px; background: var(--blue-soft); color: var(--blue); font-size: 10px; }
.evaluation-table { margin-bottom: 18px; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--surface); }
.empty-state { padding: 68px 24px; text-align: center; color: var(--muted); font-size: 13px; }
.eval-row { display: grid; grid-template-columns: 60px minmax(280px, 1fr) 340px 70px; gap: 18px; align-items: center; }
.eval-header { min-height: 42px; padding: 0 18px; background: #f1f2f2; color: var(--muted); font-size: 10px; font-weight: 700; letter-spacing: .06em; }
.eval-detail { border-top: 1px solid var(--line); }
.eval-detail:first-of-type { border-top: 0; }
.eval-detail summary { min-height: 62px; padding: 10px 18px; list-style: none; cursor: pointer; font-size: 12px; }
.eval-detail summary::-webkit-details-marker { display: none; }
.eval-detail summary > span:first-child { color: var(--blue); font-weight: 700; }
.eval-detail summary > span:nth-child(2) { color: var(--ink); font-weight: 520; }
.dimension { display: inline-flex; margin-right: 5px; padding: 4px 6px; border-radius: 5px; font-size: 9px; font-weight: 650; }
.dimension.pass { color: var(--green); background: #eaf3ef; }
.dimension.fail { color: var(--red); background: #f7ecec; }
.row-result { justify-self: end; color: var(--green); font-weight: 650; }
.failed .row-result { color: var(--red); }
.eval-comparison { padding: 20px 78px 25px; background: #fafaf8; border-top: 1px solid var(--line); display: grid; grid-template-columns: 1fr 1fr; gap: 38px; }
.eval-comparison > div + div { padding-left: 38px; border-left: 1px solid var(--line); }
.eval-comparison span { color: var(--blue); font-size: 10px; font-weight: 700; letter-spacing: .04em; }
.eval-comparison p { margin: 7px 0 17px; color: var(--muted); font-size: 12px; line-height: 1.5; }
.bad-cases { margin-top: 50px; }
.bad-cases > article { padding: 24px 0; border-top: 1px solid var(--line); }
.bad-cases > article > span { color: var(--red); font-size: 10px; font-weight: 700; }
.bad-cases h3 { margin: 8px 0 17px; font-size: 18px; }
.bad-cases article > div { display: grid; grid-template-columns: 1fr 1fr 160px; gap: 34px; }
.bad-cases article p { color: var(--muted); font-size: 12px; line-height: 1.5; }
.bad-cases article p strong { display: block; margin-bottom: 5px; color: var(--ink); }
.no-bad-cases { padding: 24px; border: 1px solid #cfe1d9; background: #f1f7f4; display: flex; align-items: flex-start; gap: 14px; border-radius: 10px; }
.no-bad-cases strong { font-size: 14px; }
.no-bad-cases p { margin: 5px 0 0; color: var(--muted); font-size: 12px; }
.next-iteration { margin-top: 28px; padding: 25px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.next-iteration h2 { margin: 9px 0 5px; font-size: 20px; letter-spacing: -.02em; }
.next-iteration > p:last-child { margin: 0; color: var(--muted); font-size: 12px; }
.about-benchmark { margin-top: 50px; padding-top: 20px; border-top: 1px solid var(--line); }
.about-benchmark > div { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 8px 23px; color: var(--faint); font-size: 10px; }
.about-benchmark span { position: relative; }
.about-benchmark span:not(:last-child)::after { content: "·"; position: absolute; right: -14px; }

@media (max-width: 980px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: relative; width: 100%; height: auto; padding: 18px 22px; flex-direction: row; align-items: center; border-right: 0; border-bottom: 1px solid var(--line); }
  .nav-list { margin: 0 0 0 auto; display: flex; }
  .nav-item { min-height: 36px; }
  .nav-item small, .nav-item.muted, .connection-card { display: none; }
  .workspace { padding-inline: 22px; }
  .metric-strip { grid-template-columns: repeat(2, 1fr); }
  .metric-strip article { padding: 16px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .metric-strip article:last-child { border-bottom: 0; }
  .analytics-grid { grid-template-columns: 1fr; }
  .decision-grid { grid-template-columns: 1fr; }
  .decision-grid article + article { border-left: 0; border-top: 1px solid var(--line); }
  .decision-grid .recommendation { margin-left: -30px; }
  .trace-rail { grid-template-columns: 1fr; gap: 18px; }
  .trace-rail article:not(:last-child)::after { left: 14px; right: auto; top: 28px; bottom: -18px; width: 1px; height: auto; }
  .trace-rail article { display: grid; grid-template-columns: 34px 1fr; }
  .trace-rail article div { margin-top: 4px; }
  .trace-rail p { min-height: 0; }
  .eval-hero { align-items: flex-start; }
  .eval-metrics { grid-template-columns: repeat(2, 1fr); }
  .eval-metrics article { padding: 18px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .eval-row { grid-template-columns: 48px minmax(220px, 1fr) 220px 60px; }
  .evaluation-table { overflow-x: auto; }
  .eval-row { min-width: 760px; }
}

@media (max-width: 640px) {
  .nav-item:not(.active) { display: none; }
  .topbar { height: 70px; }
  .dataset-label { display: none; }
  .hero { padding-top: 44px; align-items: flex-start; }
  .hero-meta { display: none; }
  .question-control { flex-direction: column; }
  .question-control button { height: 48px; }
  .suggestions { grid-template-columns: 1fr; }
  .suggestions button { border-left: 0; border-top: 1px solid var(--line); }
  .suggestions button:first-child { border-top: 0; }
  .metric-strip { grid-template-columns: 1fr 1fr; }
  .metric-strip article:last-child { grid-column: 1 / -1; }
  .chart-panel { padding: 18px; }
  .answer-panel { padding: 22px; }
  .finding-block { grid-template-columns: 1fr; }
  .finding-meta { display: block; }
  .answer-headline { margin-top: 2px; }
  .answer-summary { margin-top: 24px; }
  .evidence-grid { grid-template-columns: 1fr 1fr; }
  .evidence-grid article { border-bottom: 1px solid var(--line); }
  .decision-grid .recommendation { margin-right: -22px; margin-left: -22px; padding-left: 22px; }
  .eval-hero { display: block; }
  .eval-hero button { width: 100%; margin-top: 28px; }
  .eval-metrics { grid-template-columns: 1fr 1fr; }
  .eval-facts { grid-template-columns: 1fr; }
  .eval-facts article, .eval-facts article:first-child { padding: 14px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .eval-facts article:last-child { border-bottom: 0; }
  .eval-comparison, .bad-cases article > div { grid-template-columns: 1fr; }
  .eval-comparison > div + div { padding-left: 0; border-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .analysis-loading span { animation: none; }
}