:root {
  --ink-950: #101a24;
  --ink-900: #17232f;
  --ink-800: #243341;
  --ink-700: #405263;
  --ink-600: #617182;
  --ink-500: #81909d;
  --ink-300: #c6ced5;
  --ink-200: #dce2e7;
  --ink-100: #edf1f4;
  --ink-050: #f6f8fa;
  --white: #fff;
  --blue: #2166e5;
  --blue-dark: #174cae;
  --blue-soft: #eaf1ff;
  --teal: #087f71;
  --teal-soft: #e4f6f3;
  --amber: #a56405;
  --amber-soft: #fff3d7;
  --red: #b4232d;
  --red-soft: #fdebee;
  --sidebar: #111c27;
  --shadow-sm: 0 1px 2px rgba(16, 26, 36, .06), 0 5px 16px rgba(16, 26, 36, .04);
  --shadow-lg: 0 18px 48px rgba(11, 27, 44, .16);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink-900);
  background: var(--ink-050);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--ink-050); }
body { margin: 0; min-height: 100vh; background: var(--ink-050); color: var(--ink-900); }
button, input, select { font: inherit; }
button { cursor: pointer; }
button:focus-visible, input:focus-visible, select:focus-visible, a:focus-visible {
  outline: 3px solid rgba(33, 102, 229, .3);
  outline-offset: 2px;
}
[hidden] { display: none !important; }

.skip-link {
  position: fixed; z-index: 100; top: 12px; left: 12px; transform: translateY(-150%);
  padding: 10px 14px; border-radius: var(--radius-sm); background: var(--white); color: var(--blue-dark);
}
.skip-link:focus { transform: translateY(0); }

.app-shell { min-height: 100vh; }
.sidebar {
  position: fixed; z-index: 20; inset: 0 auto 0 0; width: 232px; display: flex; flex-direction: column;
  padding: 24px 16px 18px; overflow-y: auto; color: #e7edf3; background:
    radial-gradient(circle at 20% -10%, rgba(50, 115, 196, .2), transparent 32%), var(--sidebar);
}
.brand { display: flex; gap: 11px; align-items: center; padding: 0 8px 22px; }
.brand-mark {
  display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid rgba(255,255,255,.15);
  border-radius: 10px; color: #cce0ff; background: rgba(59, 130, 246, .12); font-size: 12px; font-weight: 800; letter-spacing: .08em;
}
.brand strong, .brand small, .release-state strong, .release-state small { display: block; }
.brand strong { font-size: 15px; letter-spacing: -.01em; }
.brand small { margin-top: 2px; color: #8496a7; font-size: 11px; }
.release-state {
  display: flex; align-items: flex-start; gap: 9px; padding: 13px 12px; margin-bottom: 18px;
  border: 1px solid rgba(255,255,255,.08); border-radius: 10px; background: rgba(255,255,255,.035);
}
.release-state strong { color: #f8d48d; font-size: 11px; letter-spacing: .04em; }
.release-state small { margin-top: 3px; color: #93a1ae; font-size: 11px; }
.status-dot { width: 8px; height: 8px; margin-top: 3px; flex: 0 0 auto; border-radius: 50%; }
.status-dot--amber { background: #e9a83c; box-shadow: 0 0 0 4px rgba(233,168,60,.12); }
.nav-list { display: grid; gap: 5px; }
.nav-item {
  width: 100%; display: flex; gap: 11px; align-items: center; padding: 10px 12px; border: 0; border-radius: 9px;
  color: #94a3b1; background: transparent; text-align: left; transition: color .15s, background .15s;
}
.nav-item:hover { color: #e8eff6; background: rgba(255,255,255,.05); }
.nav-item.is-active { color: var(--white); background: rgba(52, 112, 188, .25); box-shadow: inset 2px 0 #5ea1ff; }
.nav-icon { width: 18px; color: #7fa8d8; text-align: center; font-size: 17px; }
.sidebar-note { margin-top: auto; padding: 16px 10px 0; border-top: 1px solid rgba(255,255,255,.07); }
.sidebar-note p { margin: 7px 0 0; color: #8293a1; font-size: 11px; line-height: 1.65; }
.sidebar .eyebrow { color: #64798a; }

.workspace { min-height: 100vh; margin-left: 232px; }
.topbar {
  min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 16px 30px; border-bottom: 1px solid var(--ink-200); background: rgba(255,255,255,.91); backdrop-filter: blur(12px);
}
.topbar-title { display: flex; align-items: center; gap: 12px; }
.topbar h1 { margin: 2px 0 0; font-size: 21px; line-height: 1.2; letter-spacing: -.025em; }
.topbar-actions { display: flex; gap: 10px; align-items: center; }
.mobile-menu { display: none; }
.eyebrow { margin: 0; color: var(--ink-600); font-size: 10px; font-weight: 750; letter-spacing: .13em; text-transform: uppercase; }
.icon-button { border: 1px solid var(--ink-200); border-radius: var(--radius-sm); color: var(--ink-700); background: var(--white); }
.mode-switch { display: flex; padding: 3px; border: 1px solid var(--ink-200); border-radius: 9px; background: var(--ink-100); }
.mode-button { padding: 6px 10px; border: 0; border-radius: 6px; color: var(--ink-600); background: transparent; font-size: 12px; font-weight: 650; }
.mode-button.is-active { color: var(--ink-900); background: var(--white); box-shadow: var(--shadow-sm); }
.button { min-height: 34px; padding: 7px 12px; border: 1px solid transparent; border-radius: 8px; font-size: 12px; font-weight: 700; }
.button:disabled { cursor: not-allowed; opacity: .55; }
.button--primary { color: var(--white); background: var(--blue); }
.button--primary:hover { background: var(--blue-dark); }
.button--secondary { border-color: var(--ink-200); color: var(--ink-800); background: var(--white); }
.button--secondary:hover { border-color: var(--ink-300); background: var(--ink-050); }
.button--ghost { color: var(--ink-600); background: transparent; }

.auth-strip {
  display: flex; justify-content: space-between; align-items: center; gap: 18px; padding: 11px 30px;
  border-bottom: 1px solid var(--ink-200); background: var(--white);
}
.key-form { display: flex; align-items: center; gap: 8px; }
.key-form label { color: var(--ink-700); font-size: 12px; font-weight: 700; }
.key-form input, .filter-bar input, .filter-bar select {
  height: 34px; border: 1px solid var(--ink-300); border-radius: 8px; color: var(--ink-900); background: var(--white);
}
.key-form input { width: 230px; padding: 0 10px; }
.key-form input::placeholder, .filter-bar input::placeholder { color: #9ca8b2; }
.connection-state { margin: 0; color: var(--ink-600); font-size: 11px; }

.mode-banner { margin: 18px 30px 0; padding: 11px 14px; border: 1px solid; border-radius: 10px; font-size: 12px; }
.mode-banner strong { margin-right: 8px; }
.mode-banner--demo { border-color: #e3a832; color: #744800; background: #fff1c9; }
.mode-banner--preview { border-color: #8cb5e9; color: #174b83; background: #eef6ff; }
.mode-banner--limited { border-color: #efd48b; color: #79500d; background: #fffaf0; }

.view-stack { padding: 24px 30px 44px; }
.view-panel { max-width: 1440px; margin: 0 auto; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.section-heading h2 { margin: 4px 0 0; font-size: 20px; letter-spacing: -.025em; }
.freshness { color: var(--ink-600); font-size: 11px; }

.route-card {
  display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 22px 24px;
  border: 1px solid #d7e1ec; border-radius: var(--radius-lg); background:
    linear-gradient(110deg, rgba(232,241,255,.86), rgba(255,255,255,.95) 55%); box-shadow: var(--shadow-sm);
}
.route-card h3 { margin: 6px 0 8px; font-size: 21px; letter-spacing: -.025em; }
.route-path { display: flex; align-items: center; gap: 9px; margin: 0; color: var(--ink-600); font-size: 13px; }
.route-path span[aria-hidden] { color: var(--blue); }
.route-meta { display: grid; grid-template-columns: repeat(3, minmax(100px, auto)); gap: 24px; margin: 0; }
.route-meta div { min-width: 112px; padding-left: 16px; border-left: 1px solid var(--ink-200); }
.route-meta dt, .detail-list dt { margin-bottom: 5px; color: var(--ink-600); font-size: 10px; }
.route-meta dd, .detail-list dd { margin: 0; font-size: 12px; font-weight: 700; }

.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 11px; margin-top: 14px; }
.metric-card, .panel-card, .timeline-card, .table-card, .explain-box, .empty-state {
  border: 1px solid var(--ink-200); border-radius: var(--radius); background: var(--white); box-shadow: var(--shadow-sm);
}
.metric-card { min-height: 112px; padding: 16px; }
.metric-card > span { display: block; color: var(--ink-600); font-size: 11px; }
.metric-card strong { display: block; margin-top: 14px; color: var(--ink-950); font-size: 23px; line-height: 1; letter-spacing: -.025em; }
.metric-card small { display: block; margin-top: 10px; color: var(--ink-500); font-size: 10px; }
.split-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(360px, .85fr); gap: 14px; margin-top: 14px; }
.panel-card { padding: 19px; }
.panel-card--wide { margin-top: 14px; }
.panel-card__header { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 16px; }
.panel-card__header h3 { margin: 5px 0 0; font-size: 14px; letter-spacing: -.01em; }
.tag { display: inline-flex; align-items: center; min-height: 22px; padding: 3px 7px; border-radius: 5px; font-size: 9px; font-weight: 800; letter-spacing: .035em; white-space: nowrap; }
.tag--teal { color: #07685f; background: var(--teal-soft); }
.tag--amber { color: #855508; background: var(--amber-soft); }
.tag--red { color: #9d2530; background: var(--red-soft); }
.tag--neutral, .tag--unknown { color: var(--ink-600); background: var(--ink-100); }
.migration-list { display: grid; gap: 11px; }
.migration-row { display: flex; justify-content: space-between; align-items: center; gap: 14px; }
.migration-row strong, .migration-row span { display: block; }
.migration-row strong { font-size: 12px; }
.migration-row div span { margin-top: 3px; color: var(--ink-600); font-size: 10px; }
.progress-track { height: 5px; overflow: hidden; border-radius: 99px; background: var(--ink-100); }
.progress-value { display: block; height: 100%; border-radius: inherit; }
.progress-value--partial { width: 38%; background: #e3a337; }
.progress-value--empty { width: 3%; background: var(--ink-300); }
.signal-list, .health-list { margin: 0; padding: 0; list-style: none; }
.signal-list { display: grid; gap: 8px; }
.signal-list li { display: flex; gap: 10px; align-items: flex-start; padding: 9px 10px; border-radius: 8px; background: var(--ink-050); }
.signal-list strong, .signal-list small { display: block; }
.signal-list strong { font-size: 11px; }
.signal-list small { margin-top: 3px; color: var(--ink-600); font-size: 10px; line-height: 1.45; }
.signal-dot { width: 7px; height: 7px; margin-top: 4px; flex: 0 0 auto; border-radius: 50%; }
.signal-dot--amber { background: #d18b1d; }
.signal-dot--red { background: var(--red); }
.signal-dot--muted { background: var(--ink-300); }

.explain-box { padding: 15px 18px; border-color: #d4e0ef; background: #f7faff; }
.explain-box strong { font-size: 12px; }
.explain-box p { margin: 5px 0 0; color: var(--ink-600); font-size: 11px; line-height: 1.55; }
.subsection-title { display: flex; justify-content: space-between; align-items: end; gap: 16px; margin: 22px 1px 10px; }
.subsection-title h3 { margin: 4px 0 0; font-size: 14px; }
.subsection-title > span { max-width: 420px; color: var(--ink-600); font-size: 10px; text-align: right; }
.model-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 14px; }
.model-card { padding: 19px; border: 1px solid var(--ink-200); border-radius: var(--radius); background: var(--white); box-shadow: var(--shadow-sm); }
.model-card--rejected { border-color: #efc8ce; box-shadow: inset 3px 0 var(--red), var(--shadow-sm); }
.model-card__top { display: flex; justify-content: space-between; gap: 16px; }
.model-status { display: grid; justify-items: end; align-content: start; gap: 5px; color: var(--ink-700); font-size: 11px; font-weight: 750; white-space: nowrap; }
.model-card h3 { margin: 4px 0 0; font-size: 15px; }
.model-card__meta { margin: 4px 0 0; color: var(--ink-600); font-size: 10px; }
.score-line { display: flex; align-items: baseline; gap: 6px; margin-top: 20px; }
.score-line strong { font-size: 28px; letter-spacing: -.04em; }
.score-line span { color: var(--ink-500); font-size: 10px; }
.evidence-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 16px; }
.evidence-grid div { padding: 10px; border-radius: 8px; background: var(--ink-050); }
.evidence-grid span, .evidence-grid strong { display: block; }
.evidence-grid span { color: var(--ink-600); font-size: 9px; }
.evidence-grid strong { margin-top: 4px; font-size: 11px; }
.evidence-grid .evidence-bad { color: var(--red); }
.model-foot { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--ink-100); color: var(--ink-600); font-size: 10px; }
.model-foot strong { color: var(--ink-800); }
.empty-state { grid-column: 1 / -1; padding: 40px 20px; text-align: center; box-shadow: none; }
.empty-state > span { color: var(--ink-300); font-size: 30px; }
.empty-state h3 { margin: 8px 0 4px; font-size: 14px; }
.empty-state p { margin: 0; color: var(--ink-600); font-size: 11px; }

.filter-bar { display: grid; grid-template-columns: minmax(280px, 1.5fr) minmax(180px, 1fr) auto; gap: 10px; align-items: end; margin-bottom: 8px; }
.filter-bar label { display: grid; gap: 5px; color: var(--ink-600); font-size: 10px; font-weight: 700; }
.filter-bar input, .filter-bar select { width: 100%; padding: 0 10px; }
.scope-note { margin: 0 0 10px; color: var(--ink-600); font-size: 10px; }
.table-card { overflow: hidden; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 11px; }
th { padding: 11px 14px; border-bottom: 1px solid var(--ink-200); color: var(--ink-600); background: #fafbfd; text-align: left; font-size: 9px; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; white-space: nowrap; }
td { padding: 12px 14px; border-bottom: 1px solid var(--ink-100); color: var(--ink-700); vertical-align: top; }
tbody tr:last-child td { border-bottom: 0; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 10px; }
.request-link { padding: 0; border: 0; color: var(--blue-dark); background: transparent; font-family: inherit; font-size: inherit; text-align: left; }
.request-link:hover { text-decoration: underline; }
.table-empty { padding: 24px 8px; color: var(--ink-500); text-align: center; }
.timeline-card { margin-top: 14px; padding: 19px; }
.timeline { margin: 0; padding: 0; list-style: none; }
.timeline li { position: relative; display: grid; grid-template-columns: 120px 16px minmax(0, 1fr); gap: 12px; min-height: 58px; }
.timeline li:not(:last-child)::after { content: ""; position: absolute; top: 18px; bottom: -2px; left: 135px; width: 1px; background: var(--ink-200); }
.timeline time { color: var(--ink-500); font-size: 10px; }
.timeline-marker { z-index: 1; width: 9px; height: 9px; margin-top: 3px; border: 2px solid var(--white); border-radius: 50%; background: var(--ink-300); box-shadow: 0 0 0 1px var(--ink-300); }
.timeline-marker--ok { background: var(--teal); box-shadow: 0 0 0 1px var(--teal); }
.timeline-marker--bad { background: var(--red); box-shadow: 0 0 0 1px var(--red); }
.timeline-copy strong, .timeline-copy small { display: block; }
.timeline-copy strong { font-size: 11px; }
.timeline-copy small { margin-top: 4px; color: var(--ink-600); font-size: 10px; line-height: 1.5; }

.detail-list { margin: 0; }
.detail-list div { display: grid; grid-template-columns: 104px minmax(0, 1fr); gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--ink-100); }
.detail-list div:last-child { border-bottom: 0; }
.detail-list dt { margin: 0; }
.detail-list dd { overflow-wrap: anywhere; }
.health-list { display: grid; gap: 1px; overflow: hidden; border: 1px solid var(--ink-100); border-radius: 8px; background: var(--ink-100); }
.health-list li { display: flex; justify-content: space-between; gap: 16px; padding: 10px 11px; background: var(--white); font-size: 11px; }
.health-list strong { font-size: 10px; }
.health-ok { color: var(--teal); }
.health-warn { color: var(--amber); }
.health-unknown { color: var(--ink-500); }

.toast { position: fixed; z-index: 60; right: 22px; bottom: 22px; max-width: 360px; padding: 12px 15px; border-radius: 10px; color: var(--white); background: var(--ink-900); box-shadow: var(--shadow-lg); font-size: 12px; }

@media (max-width: 1180px) {
  .metric-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .route-card { align-items: flex-start; }
  .route-meta { grid-template-columns: 1fr; gap: 8px; }
  .route-meta div { padding: 2px 0 2px 14px; }
}

@media (max-width: 860px) {
  .sidebar { transform: translateX(-100%); box-shadow: var(--shadow-lg); transition: transform .18s ease; }
  .sidebar.is-open { transform: translateX(0); }
  .workspace { margin-left: 0; }
  .mobile-menu { display: grid; place-items: center; width: 36px; height: 36px; }
  .topbar { padding: 14px 18px; }
  .auth-strip { align-items: flex-start; padding: 11px 18px; }
  .mode-banner { margin-inline: 18px; }
  .view-stack { padding: 22px 18px 36px; }
  .split-grid, .model-grid { grid-template-columns: 1fr; }
  .route-card { display: grid; }
  .route-meta { grid-template-columns: repeat(3, minmax(0, 1fr)); width: 100%; }
  .filter-bar { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  .topbar { align-items: flex-start; }
  .topbar-actions { flex-wrap: wrap; justify-content: flex-end; }
  .topbar h1 { font-size: 18px; }
  .auth-strip { display: grid; }
  .key-form { display: grid; grid-template-columns: 1fr auto auto; width: 100%; }
  .key-form label { grid-column: 1 / -1; }
  .key-form input { width: 100%; }
  .connection-state { line-height: 1.45; }
  .mode-banner { display: grid; gap: 4px; }
  .metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .route-meta { grid-template-columns: 1fr; }
  .route-meta div { border-left: 0; border-top: 1px solid var(--ink-200); padding: 9px 0 0; }
  .route-path { flex-wrap: wrap; }
  .section-heading { align-items: flex-start; }
  .filter-bar { grid-template-columns: 1fr; }
  .evidence-grid { grid-template-columns: 1fr; }
  .timeline li { grid-template-columns: 80px 14px minmax(0, 1fr); }
  .timeline li:not(:last-child)::after { left: 91px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}