/* InsightQuery showcase — design system
   Tokens first, then base, layout, components, sections. Dark is the default; light via [data-theme="light"]. */

@font-face {
  font-family: "Inter";
  src: url("fonts/inter-latin.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/jetbrains-mono-latin.woff2") format("woff2");
  font-weight: 100 800;
  font-display: swap;
}

:root {
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --bg: #060a13;
  --bg-elev: #0a101f;
  --surface: #0d1526;
  --surface-2: #121c33;
  --tint: #080e1b;
  --line: rgba(148, 163, 184, 0.16);
  --line-strong: rgba(148, 163, 184, 0.3);
  --text: #e8edf7;
  --text-2: #a9b5cc;
  --text-3: #8391ab;

  --accent: #6b97ff;
  --accent-ink: #061024;
  --accent-2: #22d3ee;
  --accent-soft: rgba(107, 151, 255, 0.12);

  /* provenance colours: where a piece of content comes from */
  --c-fact: #9db8ff;
  --c-derived: #2dd4bf;
  --c-retrieved: #b9a4ff;
  --c-llm: #fbbf24;
  --c-ok: #34d399;
  --c-bad: #f87171;

  --shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 24px 60px -28px rgba(0, 0, 0, 0.7);
  --radius: 14px;
  --radius-sm: 9px;
  --wrap: 1180px;
  --header-h: 64px;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #f5f7fb;
  --bg-elev: #ffffff;
  --surface: #ffffff;
  --surface-2: #eef2f9;
  --tint: #edf1f8;
  --line: rgba(15, 23, 42, 0.12);
  --line-strong: rgba(15, 23, 42, 0.24);
  --text: #0b1220;
  --text-2: #3b475c;
  --text-3: #566379;

  --accent: #2a58d6;
  --accent-ink: #ffffff;
  --accent-2: #0e7490;
  --accent-soft: rgba(42, 88, 214, 0.1);

  --c-fact: #2a4fb8;
  --c-derived: #0a5c55;
  --c-retrieved: #6a47d0;
  --c-llm: #7a4600;
  --c-ok: #15803d;
  --c-bad: #b91c1c;

  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 18px 40px -26px rgba(15, 23, 42, 0.35);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { max-width: 100%; }
a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
code, pre, kbd { font-family: var(--font-mono); font-size: 0.88em; }
code { background: var(--accent-soft); padding: 0.1em 0.38em; border-radius: 5px; overflow-wrap: anywhere; }
h1, h2, h3, h4 { margin: 0; line-height: 1.15; letter-spacing: -0.02em; font-weight: 700; }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 3px; border-radius: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.small { font-size: 0.875rem; }
.muted { color: var(--text-3); }
[hidden] { display: none !important; }

.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--accent); color: var(--accent-ink); padding: 10px 16px; border-radius: 8px; font-weight: 600;
  transition: top 0.15s;
}
.skip-link:focus { top: 12px; }

.wrap { width: min(var(--wrap), 100% - 32px); margin-inline: auto; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50; height: var(--header-h);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 24px; height: 100%; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.brand-mark { width: 30px; height: 30px; }
.brand-word { font-weight: 700; letter-spacing: -0.03em; font-size: 1.12rem; margin: 0; }
.brand-word span { color: var(--accent); }
.primary-nav { display: flex; gap: 2px; margin-left: auto; }
.primary-nav a {
  color: var(--text-2); text-decoration: none; font-size: 0.9rem; font-weight: 500;
  padding: 8px 12px; border-radius: 8px;
}
.primary-nav a:hover, .primary-nav a[aria-current="true"] { color: var(--text); background: var(--accent-soft); }
.header-actions { display: flex; align-items: center; gap: 8px; }
.nav-toggle { display: none; }
.icon-btn {
  display: inline-grid; place-items: center; width: 38px; height: 38px; cursor: pointer;
  background: transparent; border: 1px solid var(--line); border-radius: 10px; color: var(--text-2);
}
.icon-btn:hover { color: var(--text); border-color: var(--line-strong); }

@media (max-width: 980px) {
  .nav-toggle { display: inline-grid; }
  .primary-nav {
    position: absolute; left: 0; right: 0; top: var(--header-h); flex-direction: column; gap: 0;
    background: var(--bg-elev); border-bottom: 1px solid var(--line); padding: 8px 16px 14px;
    display: none; margin: 0;
  }
  .primary-nav.open { display: flex; }
  .primary-nav a { padding: 12px 8px; }
  .header-actions { margin-left: auto; }
  .gh-link span { display: none; }
}

/* ---------- buttons / chips ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 20px; border-radius: 11px; font-weight: 600; font-size: 0.95rem; line-height: 1.2;
  text-decoration: none; cursor: pointer; border: 1px solid transparent;
  transition: transform 0.15s, background 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.btn-sm { padding: 8px 14px; font-size: 0.85rem; border-radius: 9px; }
.btn-primary { background: var(--accent); color: var(--accent-ink); box-shadow: 0 8px 26px -10px var(--accent); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 12px 30px -10px var(--accent); text-decoration: none; }
.btn-secondary { background: var(--surface); border-color: var(--line-strong); color: var(--text); }
.btn-secondary:hover { border-color: var(--accent); text-decoration: none; }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--text-2); }
.btn-ghost:hover { color: var(--text); border-color: var(--line-strong); text-decoration: none; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }

.stack-chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.stack-chips li {
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-2);
  border: 1px solid var(--line); background: var(--surface); padding: 5px 11px; border-radius: 999px;
}

/* ---------- hero ---------- */
.hero { position: relative; padding: 72px 0 40px; isolation: isolate; }
.hero::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 640px; z-index: -1;
  background:
    radial-gradient(60% 55% at 78% 0%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%),
    radial-gradient(40% 40% at 8% 10%, color-mix(in srgb, var(--accent-2) 10%, transparent), transparent 70%);
}
.hero::after {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 520px; z-index: -1;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(70% 80% at 50% 0%, #000 0%, transparent 75%);
  mask-image: radial-gradient(70% 80% at 50% 0%, #000 0%, transparent 75%);
  opacity: 0.35;
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px; font-family: var(--font-mono); font-size: 0.78rem;
  letter-spacing: 0.04em; color: var(--text-2); border: 1px solid var(--line); background: var(--surface);
  padding: 6px 12px; border-radius: 999px; margin-bottom: 22px;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--c-ok); box-shadow: 0 0 0 4px color-mix(in srgb, var(--c-ok) 22%, transparent); }
.hero h1 { font-size: clamp(2.35rem, 5.4vw, 4.1rem); font-weight: 800; letter-spacing: -0.04em; line-height: 1.04; margin-bottom: 22px; }
.hero h1 em {
  font-style: normal;
  background: linear-gradient(95deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { font-size: 1.14rem; color: var(--text-2); max-width: 58ch; margin-bottom: 28px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note { margin-top: 16px; font-size: 0.86rem; color: var(--text-3); max-width: 60ch; margin-bottom: 0; }

.proof-strip {
  display: grid; grid-template-columns: repeat(4, 1fr); margin: 56px 0 0;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); overflow: hidden;
}
.proof-strip > div { padding: 20px 24px; border-right: 1px solid var(--line); }
.proof-strip > div:last-child { border-right: 0; }
.proof-strip dt { font-size: 0.78rem; color: var(--text-3); font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; }
.proof-strip dd { margin: 4px 0 0; font-size: 1.55rem; font-weight: 700; letter-spacing: -0.03em; }
.proof-strip small { font-size: 0.8rem; color: var(--text-3); font-weight: 500; }
.proof-note { font-size: 0.8rem; color: var(--text-3); margin-top: 12px; }

@media (max-width: 960px) {
  .hero { padding-top: 40px; }
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .proof-strip { grid-template-columns: repeat(2, 1fr); }
  .proof-strip > div:nth-child(2) { border-right: 0; }
  .proof-strip > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}

/* ---------- section scaffolding ---------- */
.section { padding: 92px 0; }
.section-tint { background: var(--tint); border-block: 1px solid var(--line); }
.section-head { max-width: 780px; margin-bottom: 44px; }
.kicker { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent-2); margin-bottom: 14px; }
.section-head h2, .ablation h3 { font-size: clamp(1.7rem, 3.4vw, 2.55rem); letter-spacing: -0.035em; margin-bottom: 16px; }
.section-lede { color: var(--text-2); font-size: 1.07rem; max-width: 66ch; }
.section-lede.narrow { margin-bottom: 28px; }
.subhead { font-size: 1.5rem; margin: 64px 0 10px; letter-spacing: -0.03em; }
.mini-head { font-size: 0.95rem; margin: 24px 0 10px; }

.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow);
}
.card h3 { font-size: 1.12rem; margin-bottom: 12px; letter-spacing: -0.02em; }
.state-card {
  border: 1px dashed var(--line-strong); border-radius: var(--radius); padding: 28px; color: var(--text-3);
  text-align: center; background: var(--surface); list-style: none;
}
.state-card.error { border-style: solid; border-color: color-mix(in srgb, var(--c-bad) 50%, transparent); color: var(--text-2); }

/* ---------- idea lanes ---------- */
.lanes { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.lane { background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--lane); border-radius: var(--radius); padding: 22px; }
.lane[data-kind="fact"] { --lane: var(--c-derived); }
.lane[data-kind="retrieved"] { --lane: var(--c-retrieved); }
.lane[data-kind="llm"] { --lane: var(--c-llm); }
.lane[data-kind="audit"] { --lane: var(--accent); }
.lane h3 { font-size: 1.05rem; margin-bottom: 8px; }
.lane p { margin: 0; color: var(--text-2); font-size: 0.93rem; }
@media (max-width: 960px) { .lanes { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .lanes { grid-template-columns: 1fr; } }

/* ---------- provenance tags ---------- */
.prov {
  display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.04em;
  text-transform: uppercase; padding: 3px 9px; border-radius: 999px; border: 1px solid currentColor; white-space: nowrap;
  background: color-mix(in srgb, currentColor 10%, transparent);
}
.prov::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.prov-fact { color: var(--c-fact); }
.prov-derived { color: var(--c-derived); }
.prov-retrieved { color: var(--c-retrieved); }
.prov-llm { color: var(--c-llm); }
.prov-system { color: var(--accent); }
.provenance-legend { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 18px; }
.prov-list { list-style: none; display: grid; gap: 10px; }
.prov-list li { display: flex; gap: 12px; align-items: baseline; font-size: 0.92rem; color: var(--text-2); }
.prov-list .prov { flex: none; min-width: 148px; justify-content: flex-start; }

/* ---------- hero trace card ---------- */
.trace-card {
  background: linear-gradient(180deg, var(--surface-2), var(--surface)); border: 1px solid var(--line-strong);
  border-radius: 18px; box-shadow: var(--shadow), 0 0 0 1px color-mix(in srgb, var(--accent) 8%, transparent);
  overflow: hidden; font-size: 0.88rem;
}
.trace-bar { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 40%, transparent); }
.trace-bar .lights { display: flex; gap: 6px; }
.trace-bar .lights i { width: 9px; height: 9px; border-radius: 50%; background: var(--line-strong); display: block; }
.trace-bar .rec { margin-left: auto; font-family: var(--font-mono); font-size: 0.7rem; color: var(--c-llm); border: 1px solid color-mix(in srgb, var(--c-llm) 55%, transparent); padding: 2px 8px; border-radius: 999px; white-space: nowrap; }
.trace-body { padding: 18px; display: grid; gap: 14px; }
.trace-q { font-weight: 600; font-size: 1rem; letter-spacing: -0.01em; }
.pipe { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; }
.pipe li {
  display: inline-flex; align-items: center; gap: 6px; font-size: 0.74rem; font-family: var(--font-mono);
  padding: 4px 9px; border-radius: 7px; border: 1px solid var(--line); color: var(--text-2); background: var(--surface);
}
.pipe li.on { color: var(--c-ok); border-color: color-mix(in srgb, var(--c-ok) 45%, transparent); }
.pipe li.off { opacity: 0.5; }
.pipe li.bad { color: var(--c-bad); border-color: color-mix(in srgb, var(--c-bad) 50%, transparent); }
.pipe li em { font-style: normal; color: var(--text-3); }
.sql-block {
  background: color-mix(in srgb, var(--bg) 70%, transparent); border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 14px; font-family: var(--font-mono); font-size: 0.78rem; line-height: 1.55; color: var(--text); overflow-x: auto; white-space: pre; margin: 0;
}
.trace-card .sql-block { white-space: pre-wrap; overflow-wrap: anywhere; }
.sql-block .kw { color: var(--accent); font-weight: 600; }
.sql-block .fn { color: var(--c-derived); }
.sql-block .str { color: var(--c-llm); }
.sql-block .num { color: var(--c-retrieved); }
.verdict { display: inline-flex; align-items: center; gap: 8px; font-size: 0.8rem; font-weight: 600; }
.verdict.ok { color: var(--c-ok); }
.verdict.bad { color: var(--c-bad); }
.trace-foot { font-size: 0.74rem; color: var(--text-3); border-top: 1px solid var(--line); padding: 10px 16px; font-family: var(--font-mono); }

/* ---------- charts (inline SVG) ---------- */
.chart { width: 100%; height: auto; display: block; }
.chart text { font-family: var(--font-sans); fill: var(--text-2); font-size: 11px; }
.chart .axis { stroke: var(--line-strong); stroke-width: 1; }
.chart .grid { stroke: var(--line); stroke-width: 1; stroke-dasharray: 2 4; }
.chart .bar { fill: var(--c-derived); }
.chart .line { fill: none; stroke: var(--c-derived); stroke-width: 2.25; stroke-linejoin: round; stroke-linecap: round; }
.chart .area { fill: color-mix(in srgb, var(--c-derived) 14%, transparent); }
.chart .pt { fill: var(--bg); stroke: var(--c-derived); stroke-width: 2; }
.chart .val { fill: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; }

/* ---------- demo ---------- */
.demo-layout { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 32px; align-items: start; }
.demo-side { position: sticky; top: calc(var(--header-h) + 20px); display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; }
.demo-side > * { min-width: 0; }
.field-label { display: block; font-size: 0.78rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-3); margin: 0 0 8px; }
.input-row { display: flex; gap: 8px; }
.input-row input {
  flex: 1; min-width: 0; background: var(--surface); border: 1px solid var(--line-strong); color: var(--text);
  padding: 10px 14px; border-radius: 10px; font: inherit; font-size: 0.93rem;
}
.input-row input::placeholder { color: var(--text-3); }
.input-row input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.example-list { list-style: none; display: grid; gap: 8px; }
.example-btn {
  width: 100%; text-align: left; cursor: pointer; background: var(--surface); border: 1px solid var(--line); border-radius: 11px;
  padding: 12px 14px; display: grid; gap: 6px; transition: border-color 0.15s, background 0.15s;
}
.example-btn:hover { border-color: var(--line-strong); }
.example-btn[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); }
.example-btn .q { font-size: 0.92rem; font-weight: 600; letter-spacing: -0.01em; line-height: 1.35; }
.example-btn .meta { display: flex; gap: 8px; align-items: center; font-size: 0.74rem; color: var(--text-3); font-family: var(--font-mono); }
.route-pill { padding: 1px 8px; border-radius: 999px; border: 1px solid var(--line-strong); color: var(--text-2); text-transform: uppercase; letter-spacing: 0.05em; font-size: 0.68rem; }
.route-pill[data-route="sql"] { color: var(--c-derived); border-color: color-mix(in srgb, var(--c-derived) 50%, transparent); }
.route-pill[data-route="rag"] { color: var(--c-retrieved); border-color: color-mix(in srgb, var(--c-retrieved) 50%, transparent); }
.route-pill[data-route="hybrid"] { color: var(--c-llm); border-color: color-mix(in srgb, var(--c-llm) 50%, transparent); }
.route-pill[data-route="rejected"] { color: var(--c-bad); border-color: color-mix(in srgb, var(--c-bad) 50%, transparent); }
.demo-status { font-size: 0.88rem; color: var(--text-2); }
.demo-status:empty { display: none; }
.demo-status.notice { border: 1px solid color-mix(in srgb, var(--c-llm) 45%, transparent); background: color-mix(in srgb, var(--c-llm) 8%, transparent); padding: 12px 14px; border-radius: 10px; }
.demo-modes { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; background: var(--surface); }
.demo-modes h3 { font-size: 0.95rem; margin-bottom: 8px; }
.demo-modes p { font-size: 0.86rem; color: var(--text-2); margin-bottom: 10px; }
.code-inline { white-space: pre-wrap; overflow-wrap: anywhere; background: color-mix(in srgb, var(--bg) 70%, transparent); border: 1px solid var(--line); border-radius: 9px; padding: 10px 12px; overflow-x: auto; margin: 0 0 10px; font-size: 0.76rem; line-height: 1.55; }
.code-inline code { background: none; padding: 0; }

.trace-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.trace-title { font-size: 1.15rem; font-weight: 700; letter-spacing: -0.02em; max-width: 60ch; }
.trace-title:focus { outline: none; }
.trace-title small { display: block; font-size: 0.78rem; font-weight: 500; color: var(--text-3); font-family: var(--font-mono); margin-top: 4px; letter-spacing: 0; }
.trace-actions { display: flex; gap: 8px; }

.stages { list-style: none; display: grid; grid-template-columns: minmax(0, 1fr); gap: 10px; counter-reset: stage; position: relative; }
.stage {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.stage[data-state="skipped"] { background: transparent; border-style: dashed; }
.stage.current { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.stage > summary {
  list-style: none; cursor: pointer; display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; gap: 14px; align-items: center; padding: 14px 18px;
}
.stage > summary::-webkit-details-marker { display: none; }
.stage .stage-num {
  width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font-family: var(--font-mono); font-size: 0.8rem; font-weight: 600;
  border: 1px solid var(--line-strong); color: var(--text-2);
}
.stage[data-state="ok"] .stage-num { color: var(--c-ok); border-color: color-mix(in srgb, var(--c-ok) 55%, transparent); }
.stage[data-state="bad"] .stage-num { color: var(--c-bad); border-color: color-mix(in srgb, var(--c-bad) 55%, transparent); }
.stage .head { min-width: 0; }
.stage .head h3 { font-size: 1rem; letter-spacing: -0.01em; }
.stage .head p { margin: 2px 0 0; font-size: 0.86rem; color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.stage .tail { display: flex; align-items: center; gap: 10px; font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-3); }
.stage .chev { width: 16px; height: 16px; transition: transform 0.2s; color: var(--text-3); }
.stage[open] .chev { transform: rotate(90deg); }
.stage-body { padding: 4px 18px 20px 66px; display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; }
.stage-body > *, .stages > li { min-width: 0; }
.stage-body .how {
  border-left: 3px solid var(--accent); background: var(--accent-soft); padding: 10px 14px; border-radius: 0 9px 9px 0; font-size: 0.88rem; color: var(--text-2);
}
.stage-body .how strong { color: var(--text); }
.stage-body h4 { font-size: 0.78rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-3); font-weight: 500; margin-bottom: 8px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; font-size: 0.9rem; }
.kv dt { color: var(--text-3); }
.kv dd { margin: 0; overflow-wrap: anywhere; }
.answer { font-size: 1rem; line-height: 1.65; border-left: 3px solid var(--c-llm); padding-left: 16px; margin: 0; }
.answer.system { border-left-color: var(--accent); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; }
.chips li { font-size: 0.8rem; border: 1px solid var(--line-strong); padding: 3px 10px; border-radius: 999px; color: var(--text-2); }
.evidence { border: 1px solid var(--line); border-left: 3px solid var(--c-retrieved); border-radius: 0 10px 10px 0; padding: 12px 14px; background: color-mix(in srgb, var(--c-retrieved) 5%, transparent); }
.evidence header { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-weight: 600; font-size: 0.9rem; margin-bottom: 6px; }
.evidence header span { font-family: var(--font-mono); font-size: 0.74rem; color: var(--text-3); font-weight: 400; }
.evidence p { margin: 0; font-size: 0.86rem; color: var(--text-2); max-height: 9.5em; overflow: auto; }
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
table.data-table, .rows-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.rows-table th, .rows-table td, .data-table th, .data-table td { padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.rows-table th, .data-table thead th { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-3); font-weight: 500; background: color-mix(in srgb, var(--bg) 40%, transparent); }
.rows-table td.num { font-variant-numeric: tabular-nums; text-align: right; }
.rows-table tr:last-child td, .data-table tbody tr:last-child > * { border-bottom: 0; }
.data-table tbody th { font-weight: 600; font-size: 0.82rem; white-space: nowrap; }
.data-table td:nth-child(2) { font-variant-numeric: tabular-nums; }
.skip-note { margin: 0; font-size: 0.88rem; color: var(--text-3); }
.callout { padding: 10px 14px; border-radius: 10px; font-size: 0.88rem; border: 1px solid var(--line-strong); }
.callout.bad { border-color: color-mix(in srgb, var(--c-bad) 55%, transparent); background: color-mix(in srgb, var(--c-bad) 8%, transparent); }
.callout.ok { border-color: color-mix(in srgb, var(--c-ok) 45%, transparent); background: color-mix(in srgb, var(--c-ok) 7%, transparent); }
.stage-latency { display: grid; gap: 6px; }
.lat-row { display: grid; grid-template-columns: 110px 1fr 70px; gap: 10px; align-items: center; font-size: 0.82rem; }
.lat-row .bar { height: 8px; border-radius: 4px; background: var(--accent); min-width: 2px; }
.lat-row .bar-track { background: var(--surface-2); border-radius: 4px; }
.lat-row span:last-child { text-align: right; font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-2); }

@media (max-width: 1020px) {
  .demo-layout { grid-template-columns: minmax(0, 1fr); }
  .demo-side { position: static; }
}
@media (max-width: 640px) {
  .stage > summary { grid-template-columns: 30px minmax(0, 1fr) auto; gap: 10px; padding: 12px; }
  .stage .head p { white-space: normal; }
  .stage-body { padding: 4px 14px 16px; }
  .stage .tail .t { display: none; }
}

/* ---------- tabs ---------- */
.tablist { display: flex; flex-wrap: wrap; gap: 6px; border-bottom: 1px solid var(--line); margin-bottom: 22px; }
.tablist [role="tab"] {
  background: transparent; border: 0; border-bottom: 2px solid transparent; color: var(--text-2); cursor: pointer;
  padding: 10px 16px; font-weight: 600; font-size: 0.92rem; margin-bottom: -1px; border-radius: 8px 8px 0 0;
}
.tablist [role="tab"]:hover { color: var(--text); }
.tablist [role="tab"][aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }
html.js .tabpanel[hidden] { display: none; }

/* ---------- architecture ---------- */
.view-caption { color: var(--text-2); font-size: 0.95rem; max-width: 80ch; margin: -6px 0 22px; min-height: 3em; }
.arch-layout { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(300px, 1fr); gap: 28px; align-items: start; }
.arch-map { display: grid; gap: 14px; }
.arch-row { display: grid; gap: 14px; grid-template-columns: repeat(var(--cols, 1), minmax(0, 1fr)); position: relative; }
.arch-lane-label { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-3); margin: 2px 0 -6px; }
.arch-arrow { display: grid; place-items: center; color: var(--text-3); height: 18px; }
.arch-arrow svg { width: 14px; height: 14px; }
.arch-lane { border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; display: grid; gap: 8px; background: color-mix(in srgb, var(--surface) 60%, transparent); align-content: start; }
.arch-lane[data-lane="sql"] { border-color: color-mix(in srgb, var(--c-derived) 38%, var(--line)); }
.arch-lane[data-lane="rag"] { border-color: color-mix(in srgb, var(--c-retrieved) 38%, var(--line)); }
.arch-lane h3 { font-size: 0.78rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; font-weight: 500; }
.arch-lane[data-lane="sql"] h3 { color: var(--c-derived); }
.arch-lane[data-lane="rag"] h3 { color: var(--c-retrieved); }
.node {
  width: 100%; text-align: left; cursor: pointer; background: var(--surface); border: 1px solid var(--line-strong); border-radius: 11px;
  padding: 11px 13px; display: grid; gap: 2px; transition: border-color 0.15s, opacity 0.2s, background 0.15s, transform 0.15s;
}
.node:hover { border-color: var(--accent); transform: translateY(-1px); }
.node[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); }
.node .t { font-weight: 650; font-size: 0.9rem; letter-spacing: -0.01em; }
.node .s { font-size: 0.76rem; color: var(--text-3); font-family: var(--font-mono); }
.node[data-kind="store"] { border-left: 3px solid var(--c-fact); }
.node[data-kind="gate"] { border-left: 3px solid var(--c-ok); }
.node[data-kind="llm"] { border-left: 3px solid var(--c-llm); }
.node[data-kind="audit"] { border-left: 3px solid var(--accent); }
.arch-map.dim .node:not(.hl), .arch-map.dim .arch-lane:not(.hl) { opacity: 0.32; }
.arch-detail {
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 24px; position: sticky; top: calc(var(--header-h) + 20px); box-shadow: var(--shadow);
}
.arch-detail h3 { font-size: 1.25rem; margin-bottom: 4px; }
.arch-detail .role { font-family: var(--font-mono); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-2); margin-bottom: 14px; }
.arch-detail dl { display: grid; gap: 12px; margin: 14px 0 0; }
.arch-detail dt { font-size: 0.72rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-3); }
.arch-detail dd { margin: 2px 0 0; font-size: 0.9rem; color: var(--text-2); }
.arch-detail dd.sec { color: var(--text); }
.arch-detail ul { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; }
.arch-detail li a { font-family: var(--font-mono); font-size: 0.76rem; display: inline-block; padding: 3px 9px; border: 1px solid var(--line-strong); border-radius: 7px; text-decoration: none; }
.arch-detail li a:hover { border-color: var(--accent); }
@media (max-width: 960px) {
  .arch-layout { grid-template-columns: minmax(0, 1fr); }
  .arch-detail { position: static; }
}
@media (max-width: 640px) {
  .arch-row { grid-template-columns: 1fr; }
}

/* ---------- security ---------- */
.layers { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; border: 1px solid var(--line-strong); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.layer { padding: 20px 18px; border-right: 1px solid var(--line); position: relative; }
.layer:last-child { border-right: 0; }
.layer-n { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-3); display: block; margin-bottom: 10px; }
.layer h3 { font-size: 0.98rem; margin-bottom: 6px; }
.layer p { margin: 0; font-size: 0.84rem; color: var(--text-2); line-height: 1.5; }
.layer-input { background: color-mix(in srgb, var(--c-llm) 9%, transparent); }
.layer-input .layer-n { color: var(--c-llm); }
.layer-output { background: var(--accent-soft); }
.layer:not(.layer-input):not(.layer-output) .layer-n { color: var(--c-ok); }
@media (max-width: 960px) {
  .layers { grid-template-columns: 1fr; }
  .layer { border-right: 0; border-bottom: 1px solid var(--line); }
  .layer:last-child { border-bottom: 0; }
}
.repair-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 20px; margin-top: 20px; }
@media (max-width: 960px) { .repair-grid { grid-template-columns: minmax(0, 1fr); } }
.check-list { list-style: none; display: grid; gap: 8px; margin-top: 14px; }
.check-list li { padding-left: 28px; position: relative; font-size: 0.92rem; color: var(--text-2); }
.check-list li::before { position: absolute; left: 0; top: 1px; width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center; font-size: 0.72rem; font-weight: 700; }
.check-list li.ok::before { content: "✓"; color: var(--c-ok); border: 1px solid color-mix(in srgb, var(--c-ok) 55%, transparent); }
.check-list li.no::before { content: "×"; color: var(--c-bad); border: 1px solid color-mix(in srgb, var(--c-bad) 55%, transparent); font-size: 0.95rem; }

.ladder { list-style: none; display: grid; gap: 0; position: relative; counter-reset: step; }
.ladder li { position: relative; padding: 0 0 22px 52px; counter-increment: step; }
.ladder li::before {
  content: counter(step); position: absolute; left: 0; top: 0; width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 0.8rem; background: var(--surface); border: 1px solid var(--line-strong); color: var(--text-2);
}
.ladder li::after { content: ""; position: absolute; left: 15.5px; top: 36px; bottom: 4px; width: 1px; background: var(--line-strong); }
.ladder li:last-child { padding-bottom: 0; }
.ladder li:last-child::after { display: none; }
.ladder h4 { font-size: 0.82rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-2); margin: 6px 0 6px; }
.ladder p { margin: 0; color: var(--text-2); font-size: 0.95rem; max-width: 78ch; }
.ladder li.limit::before { border-color: color-mix(in srgb, var(--c-llm) 60%, transparent); color: var(--c-llm); }
.ladder li.limit h4 { color: var(--c-llm); }
.case-links { margin: 26px 0 0; font-size: 0.88rem; color: var(--text-3); }
.case { max-width: 900px; }

/* ---------- metrics ---------- */
.metric-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 960px) { .metric-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .metric-grid { grid-template-columns: 1fr; } }
.metric { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: grid; gap: 8px; align-content: start; }
.metric h3 { font-size: 0.78rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-3); font-weight: 500; }
.metric .value { font-size: 2.3rem; font-weight: 750; letter-spacing: -0.04em; line-height: 1; font-variant-numeric: tabular-nums; }
.metric .value small { font-size: 0.95rem; font-weight: 500; color: var(--text-3); letter-spacing: 0; margin-left: 6px; }
.metric .what { font-size: 0.88rem; color: var(--text-2); margin: 0; }
.metric .meter { height: 6px; border-radius: 3px; background: var(--surface-2); overflow: hidden; }
.metric .meter i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
.metric .foot { font-size: 0.78rem; color: var(--text-3); margin: 0; border-top: 1px solid var(--line); padding-top: 10px; }
.metric .foot b { color: var(--text-2); font-weight: 600; }
.metric.unmeasured .value { color: var(--text-3); font-size: 1.5rem; }
.metric-subgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.metric-subgrid div { border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; }
.metric-subgrid b { display: block; font-size: 1.1rem; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.metric-subgrid span { font-size: 0.7rem; color: var(--text-3); font-family: var(--font-mono); }

.ablation { margin-top: 24px; }
.ablation-head p { max-width: 72ch; color: var(--text-2); }
.ablation-plot { margin: 24px 0 6px; overflow-x: auto; }
.finding-list { list-style: none; display: grid; gap: 10px; margin-top: 18px; }
.finding-list li { position: relative; padding-left: 24px; font-size: 0.92rem; color: var(--text-2); }
.finding-list li::before { content: ""; position: absolute; left: 4px; top: 0.6em; width: 8px; height: 8px; border-radius: 2px; background: var(--accent); transform: rotate(45deg); }
.strip { width: 100%; min-width: 560px; height: auto; display: block; }
.strip text { font-family: var(--font-sans); fill: var(--text-2); font-size: 12px; }
.strip .lab { fill: var(--text); font-weight: 600; }
.strip .track { stroke: var(--line-strong); stroke-width: 1; }
.strip .gridl { stroke: var(--line); stroke-dasharray: 2 4; }
.strip .dot { fill: var(--accent); stroke: var(--bg); stroke-width: 2; }
.strip .dot.ref { fill: var(--c-llm); }
.strip .dot.full { fill: var(--c-derived); }
.strip .mean { stroke: var(--text); stroke-width: 2; }
.strip .band { fill: color-mix(in srgb, var(--accent) 10%, transparent); }

/* ---------- stack / decisions / data ---------- */
.stack-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 960px) { .stack-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .stack-grid { grid-template-columns: 1fr; } }
.def-list { margin: 0; display: grid; gap: 12px; }
.def-list dt { font-weight: 650; font-size: 0.92rem; }
.def-list dd { margin: 2px 0 0; font-size: 0.88rem; color: var(--text-2); }

.decision-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 1020px) { .decision-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .decision-grid { grid-template-columns: 1fr; } }
.decision dl { margin: 0; display: grid; gap: 10px; }
.decision dt { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent-2); }
.decision dd { margin: 1px 0 0; font-size: 0.9rem; color: var(--text-2); }
.decision dt:last-of-type { color: var(--c-ok); }

.data-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 960px) { .data-layout { grid-template-columns: minmax(0, 1fr); } }
.limit-list { list-style: none; display: grid; gap: 12px; }
.limit-list li { font-size: 0.92rem; color: var(--text-2); padding-left: 20px; position: relative; }
.limit-list li::before { content: ""; position: absolute; left: 2px; top: 0.62em; width: 6px; height: 6px; border-radius: 50%; background: var(--c-llm); }
.limit-list strong { color: var(--text); }

.qa-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
@media (max-width: 1100px) { .qa-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .qa-grid { grid-template-columns: 1fr; } }
.qa { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.qa h3 { font-size: 0.98rem; margin-bottom: 8px; color: var(--accent-2); }
.qa p { margin: 0; font-size: 0.88rem; color: var(--text-2); }
.inspect-links { list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-top: 28px; }
@media (max-width: 1100px) { .inspect-links { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 700px) { .inspect-links { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 440px) { .inspect-links { grid-template-columns: 1fr; } }
.inspect-links a { display: grid; gap: 2px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface); text-decoration: none; color: var(--text); height: 100%; }
.inspect-links a:hover { border-color: var(--accent); }
.inspect-links strong { font-size: 0.86rem; font-family: var(--font-mono); font-weight: 600; overflow-wrap: anywhere; }
.inspect-links span { font-size: 0.78rem; color: var(--text-3); }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 48px 0 32px; background: var(--bg-elev); }
.footer-inner { display: flex; flex-wrap: wrap; gap: 32px; justify-content: space-between; align-items: flex-start; }
.footer-brand { max-width: 46ch; }
.footer-links { list-style: none; display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; }
.footer-links a { color: var(--text-2); text-decoration: none; font-weight: 500; }
.footer-links a:hover { color: var(--text); text-decoration: underline; }
.footer-base { margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line); }
.noscript { padding: 14px 16px; text-align: center; background: var(--surface-2); border-top: 1px solid var(--line); font-size: 0.9rem; }

/* ---------- motion ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }
html:not(.js) .reveal { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}
@media print {
  .site-header, .hero::before, .hero::after { display: none; }
  body { background: #fff; color: #000; }
}

/* grid children must be allowed to shrink below their content width (long SQL, tables) */
.demo-layout > *, .arch-layout > *, .repair-grid > *, .data-layout > *, .hero-grid > *, .stack-grid > *, .decision-grid > *, .metric-grid > * { min-width: 0; }

/* Without JavaScript the tabs cannot switch, so show every panel instead of hiding two of three. */
html:not(.js) .tabpanel[hidden] { display: block !important; }
html:not(.js) .tablist { display: none; }
html:not(.js) .tabpanel { margin-bottom: 40px; }