:root {
  color-scheme: dark;
  --ink: #07141f;
  --ink-2: #0b1d2a;
  --surface: rgba(14, 34, 47, 0.86);
  --surface-strong: #10293a;
  --line: rgba(157, 207, 211, 0.18);
  --line-strong: rgba(94, 224, 195, 0.44);
  --text: #eef7f5;
  --muted: #9eb6ba;
  --cyan: #5de0c3;
  --cyan-soft: #a1f3dd;
  --amber: #f3ad52;
  --amber-soft: #ffd698;
  --danger: #ff8b78;
  --serif: "Noto Serif SC", "Songti SC", "STSong", serif;
  --sans: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  color: var(--text);
  font: 400 16px/1.6 var(--sans);
  background:
    radial-gradient(circle at 72% 8%, rgba(36, 121, 125, .2), transparent 30rem),
    linear-gradient(rgba(120, 178, 180, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 178, 180, .035) 1px, transparent 1px),
    var(--ink);
  background-size: auto, 42px 42px, 42px 42px, auto;
}

button, input, select { font: inherit; }
button, select { color: inherit; }
a { color: inherit; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: .75rem 1rem;
  color: var(--ink);
  background: var(--cyan);
  border-radius: .5rem;
}
.skip-link:focus { top: 1rem; }

.topbar {
  position: relative;
  z-index: 20;
  width: min(1480px, calc(100% - 3rem));
  min-height: 82px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: .8rem; text-decoration: none; }
.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  color: var(--ink);
  background: var(--cyan);
  border-radius: .65rem 1.15rem .65rem .65rem;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.35rem;
  box-shadow: 0 0 28px rgba(93, 224, 195, .2);
}
.brand strong { display: block; font-family: var(--serif); font-size: 1.25rem; letter-spacing: .16em; }
.brand small { display: block; margin-top: .15rem; color: var(--muted); font-size: .68rem; letter-spacing: .16em; }
.main-nav { display: flex; justify-content: center; gap: clamp(1rem, 2.5vw, 2.6rem); }
.main-nav a { position: relative; color: var(--muted); text-decoration: none; font-size: .82rem; }
.main-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -.55rem; height: 1px; background: var(--cyan); transition: right .2s ease; }
.main-nav a:hover { color: var(--text); }
.main-nav a:hover::after { right: 0; }
.topbar-meta { display: flex; align-items: center; gap: 1.4rem; color: var(--muted); font-size: .78rem; }
.tour-launch { padding: .48rem .72rem; color: var(--ink); background: var(--amber); border: 0; border-radius: 99px; cursor: pointer; font-size: .72rem; font-weight: 700; }
.tour-launch:hover { background: var(--amber-soft); }
.status { color: var(--cyan-soft); }
.status i { display: inline-block; width: .48rem; height: .48rem; margin-right: .4rem; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 5px rgba(93, 224, 195, .09); }

main { width: min(1480px, calc(100% - 3rem)); margin: 0 auto; padding: 3rem 0 5rem; }
.intro { display: grid; grid-template-columns: minmax(0, 1fr) minmax(22rem, .55fr); gap: 2rem; align-items: end; margin-bottom: 2rem; }
.intro .eyebrow { grid-column: 1 / -1; margin: 0 0 -.8rem; color: var(--cyan); font-size: .78rem; letter-spacing: .18em; text-transform: uppercase; }
.intro h1 { margin: 0; max-width: 920px; font-family: var(--serif); font-size: clamp(2.3rem, 4.4vw, 4.7rem); line-height: 1.14; font-weight: 700; }
.intro h1 em { color: var(--cyan-soft); font-style: normal; }
.intro > p:not(.eyebrow) { margin: 0 0 .55rem; max-width: 34rem; color: var(--muted); line-height: 1.9; }
.intro-actions { grid-column: 2; display: flex; flex-wrap: wrap; gap: .7rem; margin-top: -.9rem; }
.intro-actions a { padding: .72rem .95rem; border-radius: .6rem; text-decoration: none; font-size: .78rem; font-weight: 700; }
.intro-primary { color: var(--ink); background: var(--cyan); }
.intro-secondary { color: var(--cyan-soft); border: 1px solid var(--line-strong); background: rgba(93,224,195,.05); }
.section-index { color: var(--cyan); font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; }

.value-section { scroll-margin-top: 1rem; display: grid; grid-template-columns: minmax(300px, .78fr) minmax(0, 1.45fr); gap: clamp(2rem, 6vw, 7rem); align-items: start; margin: 4rem 0 7rem; }
.value-lead h2, .scenario-heading h2, .technology-heading h2, .delivery-heading h2 { margin: .65rem 0 1rem; max-width: 19ch; font-family: var(--serif); font-size: clamp(2rem, 3.7vw, 3.7rem); line-height: 1.18; }
.value-lead p, .scenario-heading p, .technology-heading p, .delivery-heading p { max-width: 43rem; margin: 0; color: var(--muted); line-height: 1.9; }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; padding: 1px; background: var(--line); }
.value-grid article { min-height: 230px; padding: 1.3rem; background: var(--ink-2); }
.value-grid span, .scenario-grid > article > span, .implementation-card > span, .ai-core-grid span { color: var(--cyan); font-size: .68rem; letter-spacing: .08em; }
.value-grid h3, .scenario-grid h3, .implementation-card h3, .ai-core-grid h3 { margin: .7rem 0 .55rem; font-family: var(--serif); font-size: 1.2rem; }
.value-grid p, .scenario-grid p, .ai-core-grid p { margin: 0; color: var(--muted); font-size: .78rem; line-height: 1.75; }

.panel { background: var(--surface); border: 1px solid var(--line); backdrop-filter: blur(18px); }
.workspace { scroll-margin-top: 1rem; display: grid; grid-template-columns: minmax(0, 1.75fr) minmax(340px, .8fr); gap: 1rem; min-height: 710px; }
.map-panel { display: flex; flex-direction: column; min-width: 0; overflow: hidden; border-radius: 1.25rem .35rem .35rem 1.25rem; }
.panel-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; padding: 1.5rem 1.6rem 1rem; }
.panel-heading h2 { margin: .35rem 0 0; font-family: var(--serif); font-size: 1.35rem; }
.map-note { padding: .4rem .62rem; color: var(--amber-soft); background: rgba(243, 173, 82, .08); border: 1px solid rgba(243, 173, 82, .25); border-radius: 99px; font-size: .75rem; }

.map-canvas { position: relative; flex: 1; min-height: 500px; margin: 0 1rem; overflow: hidden; background: linear-gradient(135deg, rgba(20, 52, 64, .54), rgba(7, 21, 31, .74)); border: 1px solid var(--line); border-radius: .85rem; }
.map-canvas::before { content: ""; position: absolute; inset: 0; opacity: .28; background-image: radial-gradient(circle, rgba(174, 226, 220, .28) 1px, transparent 1px); background-size: 18px 18px; }
.map-lines { position: absolute; inset: 0; width: 100%; height: 100%; }
.map-lines .river { fill: none; stroke: rgba(75, 176, 197, .38); stroke-width: 24; }
.map-lines .road { fill: none; stroke: rgba(163, 203, 201, .2); stroke-width: 2; stroke-dasharray: 8 9; }
.map-lines .primary { stroke: rgba(163, 203, 201, .32); stroke-width: 3; }
.map-lines .blocks path { fill: rgba(116, 170, 166, .06); stroke: rgba(143, 194, 193, .16); }
.map-lines text { fill: rgba(179, 215, 212, .42); font: 500 14px var(--sans); letter-spacing: .12em; }

.map-point { position: absolute; left: var(--x); top: var(--y); display: flex; align-items: center; gap: .42rem; transform: translate(-50%, -50%); padding: .36rem .58rem .36rem .34rem; border: 1px solid rgba(127, 189, 185, .28); border-radius: 99px; color: var(--text); background: rgba(7, 20, 31, .92); cursor: pointer; box-shadow: 0 10px 24px rgba(0,0,0,.24); transition: transform .2s ease, border-color .2s, background .2s, opacity .2s; }
.map-point:hover, .map-point:focus-visible { transform: translate(-50%, -50%) scale(1.05); border-color: var(--cyan); outline: none; }
.map-point span { display: grid; place-items: center; width: 1.65rem; height: 1.65rem; border-radius: 50%; color: var(--ink); background: #83aaa8; font-size: .66rem; font-weight: 700; }
.map-point b { font-size: .8rem; white-space: nowrap; }
.map-point.active { background: var(--cyan); color: var(--ink); border-color: var(--cyan); }
.map-point.active span { background: var(--ink); color: var(--cyan); }
.map-point.extension { border-style: dashed; }
.map-point.extension span { color: var(--ink); background: var(--amber); }
.map-point.dimmed { opacity: .32; }
.map-legend { position: absolute; left: 1rem; bottom: 1rem; display: flex; flex-wrap: wrap; gap: .9rem; padding: .55rem .7rem; border-radius: .5rem; color: var(--muted); background: rgba(7, 20, 31, .82); font-size: .7rem; }
.map-legend span { display: inline-flex; align-items: center; gap: .36rem; }
.dot { width: .5rem; height: .5rem; border-radius: 50%; }
.dot.verified { background: var(--cyan); }
.dot.extension { background: var(--amber); }
.dot.dimmed { background: #5f7779; }

.time-control { display: grid; grid-template-columns: 130px 1fr; gap: 1rem 1.25rem; align-items: center; padding: 1.3rem 1.6rem 1.45rem; }
.time-label span { display: block; color: var(--muted); font-size: .66rem; letter-spacing: .16em; }
.time-label strong { font-family: var(--serif); font-size: 1.85rem; color: var(--amber-soft); }
#time-range { width: 100%; margin: 0; accent-color: var(--amber); }
.time-ticks { display: flex; justify-content: space-between; margin-top: -.15rem; color: var(--muted); font-size: .72rem; }

.dossier { display: flex; flex-direction: column; padding: 1.6rem; border-radius: .35rem 1.25rem 1.25rem .35rem; }
.dossier-topline { display: flex; justify-content: space-between; gap: 1rem; align-items: center; }
.site-number { color: var(--cyan); font-size: .72rem; letter-spacing: .15em; }
.confidence { color: var(--cyan-soft); font-size: .7rem; }
.former-name { min-height: 2.7rem; margin: 2rem 0 .2rem; color: var(--muted); line-height: 1.6; font-size: .86rem; }
.dossier h2 { margin: 0 0 1.5rem; font-family: var(--serif); font-size: clamp(2.25rem, 4vw, 4.3rem); line-height: 1.08; }
.period-visual { margin: -.25rem 0 1rem; }
.visual-frame { position: relative; min-height: 190px; overflow: hidden; background-color: #06121b; background-position: 0 50%; background-repeat: no-repeat; background-size: 400% auto; border: 1px solid var(--line); border-radius: .75rem; }
.visual-frame.is-real { background-position: center; background-size: cover; }
.visual-frame::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 50%, rgba(3, 12, 18, .72)); pointer-events: none; }
.visual-frame > img, .compare-layer > img { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.visual-badge, .visual-loading { position: absolute; z-index: 2; padding: .34rem .5rem; border-radius: .35rem; font-size: .61rem; }
.visual-badge { top: .6rem; left: .6rem; color: var(--amber-soft); background: rgba(7, 20, 31, .86); border: 1px solid rgba(243, 173, 82, .35); }
.visual-frame.is-real .visual-badge { color: var(--cyan-soft); border-color: rgba(93, 224, 195, .38); }
.visual-frame.is-rights-pending .visual-badge { color: var(--amber-soft); border-color: rgba(243, 173, 82, .42); }
.visual-loading { right: .6rem; bottom: .6rem; color: var(--muted); background: rgba(7, 20, 31, .76); }
.visual-frame.is-loaded .visual-loading { display: none; }
.visual-frame.is-error { background-image: linear-gradient(135deg, rgba(93,224,195,.12), rgba(243,173,82,.06)) !important; }
.visual-frame.is-error .visual-loading { color: var(--amber-soft); }
.visual-meta { display: flex; justify-content: space-between; gap: .8rem; align-items: flex-start; margin-top: .65rem; }
.visual-meta > div > span { color: var(--amber-soft); font-family: var(--serif); font-size: 1.05rem; }
.visual-meta p { margin: .2rem 0 0; color: var(--muted); font-size: .66rem; line-height: 1.5; }
.visual-meta .visual-credit { margin-top: .42rem; color: #a9c1c0; }
.visual-credit a { display: inline-block; margin-left: .35rem; color: var(--cyan-soft); text-decoration-thickness: 1px; text-underline-offset: .16rem; }
.visual-credit a[hidden] { display: none; }
.visual-meta button { flex: 0 0 auto; padding: .42rem .58rem; color: var(--cyan-soft); background: transparent; border: 1px solid var(--line-strong); border-radius: .45rem; cursor: pointer; font-size: .66rem; }
.visual-meta button:hover { color: var(--ink); background: var(--cyan); }
.period-switcher { display: grid; grid-template-columns: repeat(4, 1fr); gap: .35rem; margin-top: .65rem; }
.period-switcher button { padding: .4rem .2rem; color: var(--muted); background: rgba(7, 20, 31, .6); border: 1px solid var(--line); border-radius: .4rem; cursor: pointer; font-size: .66rem; }
.period-switcher button.selected { color: var(--ink); background: var(--amber); border-color: var(--amber); font-weight: 700; }
.reconstruction-audit { margin-top: .7rem; padding: .7rem .8rem; border: 1px solid var(--line); border-radius: .55rem; background: rgba(7,20,31,.46); }
.reconstruction-audit summary { color: var(--cyan-soft); cursor: pointer; font-size: .68rem; }
.audit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .55rem .8rem; margin-top: .7rem; }
.audit-grid p { margin: 0; }
.audit-grid span { display: block; color: var(--muted); font-size: .6rem; }
.audit-grid b { display: block; margin-top: .12rem; color: #dce9e7; font-size: .65rem; line-height: 1.45; font-weight: 500; }
.reconstruction-audit .audit-note { margin: .7rem 0 0; color: var(--muted); font-size: .62rem; line-height: 1.55; }
.identity-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; overflow: hidden; border: 1px solid var(--line); border-radius: .7rem; background: var(--line); }
.identity-grid div { min-width: 0; padding: .8rem; background: var(--ink-2); }
.identity-grid span { display: block; color: var(--muted); font-size: .7rem; }
.identity-grid strong { display: block; margin-top: .32rem; font-size: .86rem; line-height: 1.45; }
.time-story { margin: 1.15rem 0; padding: 1rem; border-left: 2px solid var(--amber); background: rgba(243, 173, 82, .06); }
.time-story span { color: var(--amber-soft); font-size: .72rem; }
.time-story p { margin: .48rem 0 0; color: #d8e6e5; line-height: 1.65; font-size: .84rem; }
.evidence-preview { flex: 1; }
.evidence-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: .55rem; }
.evidence-head h3 { margin: 0; font-size: .86rem; }
.evidence-head span { color: var(--muted); font-size: .7rem; }
.evidence-preview ul { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.evidence-preview li { display: grid; grid-template-columns: 1.7rem 1fr auto; gap: .5rem; align-items: start; padding: .66rem 0; border-bottom: 1px solid var(--line); font-size: .76rem; line-height: 1.45; }
.evidence-preview li i { color: var(--cyan); font-style: normal; }
.evidence-preview li b { color: var(--muted); font-size: .64rem; font-weight: 500; }
.primary-action { width: 100%; margin-top: 1rem; padding: .9rem 1rem; border: 0; border-radius: .65rem; color: var(--ink); background: var(--cyan); font-weight: 700; cursor: pointer; }
.primary-action:hover { background: var(--cyan-soft); }
.primary-action span { float: right; }

.metrics { display: grid; grid-template-columns: repeat(4, minmax(130px, 1fr)) minmax(280px, 1.5fr); gap: 0; margin: 1rem 0 7rem; border: 1px solid var(--line); border-radius: 1rem; background: rgba(7, 20, 31, .7); }
.metrics > div { display: flex; align-items: baseline; gap: .65rem; padding: 1rem 1.15rem; border-right: 1px solid var(--line); }
.metrics strong { color: var(--cyan-soft); font-family: var(--serif); font-size: 1.55rem; }
.metrics span { color: var(--muted); font-size: .76rem; }
.metrics > p { margin: 0; padding: 1rem 1.15rem; color: var(--muted); font-size: .76rem; line-height: 1.65; }

.feature-section { scroll-margin-top: 1rem; display: grid; grid-template-columns: minmax(300px, .78fr) minmax(0, 1.45fr); gap: clamp(2rem, 6vw, 7rem); align-items: start; margin: 0 0 8rem; }
.section-copy { position: sticky; top: 1.5rem; padding-top: .5rem; }
.section-copy h2, .ledger-heading h2, .method-section h2 { margin: .65rem 0 1rem; max-width: 15ch; font-family: var(--serif); font-size: clamp(2rem, 3.7vw, 3.7rem); line-height: 1.18; }
.section-copy > p { max-width: 33rem; color: var(--muted); line-height: 1.9; }
.guardrail-list { display: grid; gap: .7rem; margin-top: 2rem; }
.guardrail-list span { display: flex; align-items: center; gap: .8rem; color: #dbeae8; font-size: .86rem; }
.guardrail-list i { display: grid; place-items: center; width: 1.7rem; height: 1.7rem; border: 1px solid var(--line-strong); border-radius: 50%; color: var(--cyan); font-style: normal; font-size: .7rem; }

.ask-console { overflow: hidden; border-radius: 1.1rem; }
.console-bar { display: flex; justify-content: space-between; padding: .8rem 1rem; color: var(--muted); background: rgba(4, 14, 22, .64); border-bottom: 1px solid var(--line); font-size: .68rem; letter-spacing: .12em; }
.console-bar i { display: inline-block; width: .48rem; height: .48rem; margin-right: .45rem; border-radius: 50%; background: var(--cyan); }
.suggestions { display: flex; flex-wrap: wrap; gap: .55rem; padding: 1.2rem 1.2rem .2rem; }
.suggestions button, .unknown-example button { padding: .5rem .7rem; color: var(--muted); background: rgba(93, 224, 195, .04); border: 1px solid var(--line); border-radius: .55rem; cursor: pointer; font-size: .75rem; }
.suggestions button:hover, .unknown-example button:hover { color: var(--text); border-color: var(--line-strong); }
.ask-form { padding: 1.1rem 1.2rem; }
.ask-form label { display: block; margin-bottom: .55rem; color: var(--muted); font-size: .75rem; }
.ask-form > div { display: grid; grid-template-columns: 1fr auto; gap: .5rem; }
.ask-form input { min-width: 0; padding: .92rem 1rem; color: var(--text); background: #071722; border: 1px solid var(--line); border-radius: .65rem; }
.ask-form button { padding: .8rem 1.05rem; border: 0; border-radius: .65rem; color: var(--ink); background: var(--cyan); font-weight: 700; cursor: pointer; }
.answer-card { margin: 0 1.2rem; padding: 1.35rem; background: linear-gradient(135deg, rgba(93, 224, 195, .09), rgba(13, 46, 58, .35)); border: 1px solid var(--line-strong); border-radius: .85rem; }
.answer-card.is-unknown { background: rgba(243, 173, 82, .05); border-color: rgba(243, 173, 82, .34); }
.answer-kicker { display: flex; align-items: center; justify-content: space-between; gap: 1rem; font-size: .72rem; }
.answer-kicker span { color: var(--cyan); }
.answer-kicker b { color: var(--cyan-soft); font-weight: 500; }
.answer-card.is-unknown .answer-kicker span, .answer-card.is-unknown .answer-kicker b { color: var(--amber-soft); }
.answer-card > p { margin: 1rem 0; color: #e1efed; line-height: 1.9; white-space: pre-line; }
.answer-sources { display: flex; flex-wrap: wrap; gap: .5rem; }
.answer-sources a, .answer-sources span { display: inline-flex; align-items: center; gap: .35rem; padding: .4rem .58rem; color: var(--cyan-soft); background: rgba(7, 20, 31, .55); border: 1px solid var(--line); border-radius: 99px; text-decoration: none; font-size: .68rem; }
.answer-sources a::before, .answer-sources span::before { content: "证"; display: grid; place-items: center; width: 1.1rem; height: 1.1rem; color: var(--ink); background: var(--cyan); border-radius: 50%; font-size: .58rem; font-weight: 700; }
.unknown-example { display: flex; align-items: center; justify-content: flex-end; gap: .7rem; padding: 1rem 1.2rem 1.2rem; color: var(--muted); font-size: .7rem; }

.route-section { grid-template-columns: minmax(0, 1.45fr) minmax(300px, .78fr); }
.route-copy { order: 2; }
.route-builder { overflow: hidden; border-radius: 1.1rem; }
.route-controls { display: grid; grid-template-columns: auto 1fr auto; gap: 1.2rem; align-items: end; padding: 1.2rem; border-bottom: 1px solid var(--line); }
.control-label { display: block; margin-bottom: .5rem; color: var(--muted); font-size: .72rem; }
.segmented { display: flex; padding: .25rem; background: #071722; border: 1px solid var(--line); border-radius: .65rem; }
.segmented button { padding: .55rem .72rem; border: 0; border-radius: .45rem; color: var(--muted); background: transparent; cursor: pointer; font-size: .76rem; white-space: nowrap; }
.segmented button.selected { color: var(--ink); background: var(--cyan); font-weight: 700; }
.generate-route { padding: .72rem .9rem; border: 1px solid var(--cyan); border-radius: .65rem; color: var(--cyan-soft); background: rgba(93, 224, 195, .08); cursor: pointer; white-space: nowrap; }
.generate-route:hover { color: var(--ink); background: var(--cyan); }
.route-result { padding: 1.3rem; }
.route-summary { display: flex; align-items: start; justify-content: space-between; gap: 1rem; }
.route-summary span:first-child { color: var(--cyan); font-size: .72rem; }
.route-summary h3 { margin: .25rem 0 0; font-family: var(--serif); font-size: 1.65rem; }
.estimate-badge { padding: .4rem .55rem; color: var(--amber-soft) !important; border: 1px solid rgba(243, 173, 82, .25); border-radius: 99px; font-size: .65rem !important; }
.route-stops { list-style: none; margin: 1.5rem 0 1rem; padding: 0; counter-reset: stops; }
.route-stops li { position: relative; display: grid; grid-template-columns: 2rem 1fr auto; gap: .8rem; align-items: start; padding: 0 0 1.3rem; }
.route-stops li:not(:last-child)::after { content: ""; position: absolute; top: 2rem; bottom: .1rem; left: .85rem; width: 1px; background: var(--line-strong); }
.route-stops li::before { counter-increment: stops; content: counter(stops); position: relative; z-index: 1; display: grid; place-items: center; width: 1.75rem; height: 1.75rem; color: var(--ink); background: var(--cyan); border-radius: 50%; font-size: .7rem; font-weight: 700; }
.route-stops strong { display: block; margin-bottom: .2rem; font-size: .9rem; }
.route-stops p { margin: 0; color: var(--muted); font-size: .76rem; line-height: 1.65; }
.route-stops a { color: var(--cyan-soft); font-size: .68rem; text-decoration: none; }
.route-caution { margin: 0; padding: .8rem; color: var(--muted); background: rgba(255,255,255,.025); border-radius: .55rem; font-size: .72rem; }
.route-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .55rem; margin-top: .85rem; }
.route-actions button { padding: .48rem .68rem; color: var(--cyan-soft); background: transparent; border: 1px solid var(--line); border-radius: .45rem; cursor: pointer; font-size: .68rem; }
.route-actions button:hover { border-color: var(--line-strong); }
.route-actions span { color: var(--muted); font-size: .65rem; word-break: break-all; }
.reconstruction-card { margin-top: 2.2rem; padding: 1rem; border: 1px solid rgba(243, 173, 82, .3); border-radius: .9rem; background: rgba(243, 173, 82, .045); }
.reconstruction-head { display: flex; justify-content: space-between; gap: .8rem; color: var(--amber-soft); font-size: .66rem; }
.reconstruction-head b { font-weight: 500; }
.evidence-flow { display: grid; grid-template-columns: 1fr 24px 1fr 24px 1fr; align-items: center; margin: 1rem 0; }
.evidence-flow > div { min-width: 0; padding: .65rem; background: rgba(7,20,31,.62); border-radius: .55rem; }
.evidence-flow small, .evidence-flow span { display: block; color: var(--muted); font-size: .58rem; }
.evidence-flow strong { display: block; margin: .2rem 0; color: var(--text); font-size: .75rem; }
.evidence-flow i { height: 1px; background: var(--amber); opacity: .6; }
.reconstruction-card > p { margin: 0; color: var(--muted); font-size: .7rem; line-height: 1.65; }

.scenario-section { scroll-margin-top: 1rem; display: grid; grid-template-columns: minmax(300px, .68fr) minmax(0, 1.55fr); gap: clamp(2rem, 6vw, 7rem); margin: 0 0 8rem; }
.scenario-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; padding: 1px; background: var(--line); }
.scenario-grid article { min-height: 225px; padding: 1.25rem; background: var(--ink-2); }
.scenario-grid article b { display: block; margin-top: 1.1rem; color: var(--amber-soft); font-size: .7rem; font-weight: 500; }

.ledger-section { scroll-margin-top: 1rem; margin-bottom: 7rem; }
.ledger-heading { display: flex; justify-content: space-between; gap: 2rem; align-items: end; margin-bottom: 1.5rem; }
.ledger-heading h2 { max-width: 18ch; margin-bottom: 0; }
.ledger-actions { display: grid; gap: .35rem; min-width: 230px; }
.ledger-actions label { color: var(--muted); font-size: .72rem; }
.ledger-actions select { width: 100%; padding: .7rem .8rem; color: var(--text); background: var(--ink-2); border: 1px solid var(--line); border-radius: .55rem; }
.ledger-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(330px, .65fr); gap: 1rem; align-items: start; }
.fact-ledger, .source-ledger { overflow: hidden; border-radius: 1rem; }
.table-head { display: flex; justify-content: space-between; gap: 1rem; padding: .85rem 1rem; color: var(--muted); background: rgba(4, 14, 22, .55); border-bottom: 1px solid var(--line); font-size: .72rem; }
.table-head b { color: var(--cyan-soft); font-weight: 500; }
.fact-list { max-height: 720px; overflow: auto; }
.fact-row { display: grid; grid-template-columns: 5rem minmax(0, 1fr) auto; gap: 1rem; align-items: start; padding: .85rem 1rem; border-bottom: 1px solid var(--line); }
.fact-row:hover { background: rgba(93, 224, 195, .035); }
.fact-row > span { color: var(--cyan); font-size: .68rem; }
.fact-row p { margin: 0; font-size: .78rem; line-height: 1.65; }
.fact-row small { display: block; margin-top: .25rem; color: var(--muted); font-size: .65rem; }
.fact-row a, .fact-row .local-source { padding: .25rem .42rem; color: var(--cyan-soft); border: 1px solid var(--line); border-radius: .35rem; text-decoration: none; font-size: .62rem; white-space: nowrap; }
.source-list { padding: .3rem 1rem; }
.source-item { padding: .75rem 0; border-bottom: 1px solid var(--line); }
.source-item div { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.source-item span { color: var(--cyan); font-size: .65rem; }
.source-item b { color: var(--muted); font-size: .62rem; font-weight: 500; }
.source-item a, .source-item strong { display: block; margin-top: .25rem; color: #e1edec; text-decoration: none; font-size: .75rem; line-height: 1.55; font-weight: 500; }
.source-item a:hover { color: var(--cyan-soft); }
.source-item > small { display: block; margin-top: .28rem; color: #718d91; font-size: .6rem; }
.validation-box { margin: .75rem; padding: 1rem; background: rgba(93, 224, 195, .05); border: 1px solid var(--line-strong); border-radius: .75rem; }
.validation-title { display: flex; justify-content: space-between; align-items: center; gap: 1rem; font-size: .78rem; }
.validation-title strong { color: var(--cyan-soft); }
.validation-dots { display: grid; grid-template-columns: repeat(10, 1fr); gap: .35rem; margin: .85rem 0; }
.validation-dots i { height: .35rem; border-radius: 99px; background: #344c54; transition: background .25s ease; }
.validation-dots i.pass { background: var(--cyan); box-shadow: 0 0 8px rgba(93, 224, 195, .28); }
.validation-dots i.fail { background: var(--danger); }
.validation-box p { color: var(--muted); font-size: .68rem; line-height: 1.6; }
.validation-box button { width: 100%; padding: .65rem; border: 1px solid var(--line-strong); border-radius: .55rem; color: var(--cyan-soft); background: rgba(7, 20, 31, .58); cursor: pointer; }
.validation-box button:hover { color: var(--ink); background: var(--cyan); }
.validation-details { margin-top: .7rem; }
.validation-details summary { color: var(--cyan-soft); cursor: pointer; font-size: .68rem; }
.validation-results { max-height: 340px; margin-top: .6rem; overflow: auto; border-top: 1px solid var(--line); }
.validation-row { display: grid; grid-template-columns: 1.5rem 1fr auto; gap: .55rem; align-items: start; padding: .58rem 0; border-bottom: 1px solid var(--line); }
.validation-row > span { color: var(--muted); font-size: .58rem; }
.validation-row b { display: block; font-size: .64rem; font-weight: 500; }
.validation-row small { display: block; margin-top: .15rem; color: var(--muted); font-size: .56rem; line-height: 1.45; }
.validation-row i { color: var(--muted); font-size: .58rem; font-style: normal; }
.validation-row.is-pass i { color: var(--cyan); }
.validation-row.is-fail i { color: var(--danger); }

.technology-section { scroll-margin-top: 1rem; margin: 0 0 8rem; }
.technology-heading { display: grid; grid-template-columns: minmax(300px, .7fr) minmax(0, 1.3fr); gap: clamp(2rem, 6vw, 7rem); align-items: end; margin-bottom: 2rem; }
.technology-heading h2 { margin-bottom: 0; }
.pipeline { list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; margin: 0 0 1rem; padding: 1px; background: var(--line); }
.pipeline li { position: relative; min-height: 125px; padding: 1rem; background: var(--ink-2); }
.pipeline li:not(:last-child)::after { content: "→"; position: absolute; z-index: 2; right: -.65rem; top: 50%; transform: translateY(-50%); display: grid; place-items: center; width: 1.3rem; height: 1.3rem; color: var(--ink); background: var(--cyan); border-radius: 50%; font-size: .7rem; }
.pipeline span { color: var(--cyan); font-size: .62rem; }
.pipeline b { display: block; margin-top: .75rem; font-family: var(--serif); font-size: .92rem; }
.pipeline small { display: block; margin-top: .25rem; color: var(--muted); font-size: .65rem; }
.implementation-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.implementation-card { padding: 1.35rem; border: 1px solid var(--line); border-radius: .85rem; background: var(--surface); }
.implementation-card.future-stage > span { color: var(--amber-soft); }
.implementation-card ul { margin: 1rem 0 0; padding-left: 1.1rem; color: var(--muted); font-size: .75rem; line-height: 1.75; }
.ai-core-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 1rem; padding: 1px; background: var(--line); }
.ai-core-grid article { min-height: 175px; padding: 1rem; background: var(--ink-2); }

.delivery-section { scroll-margin-top: 1rem; margin: 0 0 8rem; }
.delivery-heading { display: grid; grid-template-columns: minmax(300px, .7fr) minmax(0, 1.3fr); gap: clamp(2rem, 6vw, 7rem); align-items: end; margin-bottom: 2rem; }
.delivery-heading h2 { margin-bottom: 0; }
.delivery-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(330px, .85fr); gap: 1rem; }
.video-card, .material-list { overflow: hidden; border-radius: 1rem; }
.video-card video { display: block; width: 100%; aspect-ratio: 16/9; background: #02080d; }
.video-card > div { display: flex; justify-content: space-between; gap: 1rem; align-items: center; padding: .85rem 1rem; }
.video-card span { color: var(--muted); font-size: .68rem; }
.video-card a { color: var(--cyan-soft); font-size: .7rem; }
.material-list { padding: .55rem 1rem; }
.material-list > a { display: grid; grid-template-columns: 2rem 1fr auto; gap: .75rem; align-items: center; padding: 1rem 0; border-bottom: 1px solid var(--line); text-decoration: none; }
.material-list > a:last-child { border-bottom: 0; }
.material-list > a > span { color: var(--cyan); font-size: .65rem; }
.material-list b { display: block; font-size: .82rem; }
.material-list small { display: block; margin-top: .18rem; color: var(--muted); font-size: .64rem; }
.material-list i { color: var(--amber-soft); font-size: .62rem; font-style: normal; }
.requirements-check { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin: 1rem 0 0; padding: 1px; background: var(--line); }
.requirements-check li { min-height: 150px; padding: 1rem; background: var(--ink-2); }
.requirements-check span { color: var(--cyan); font-size: .62rem; }
.requirements-check b { display: block; margin-top: .55rem; font-family: var(--serif); font-size: .9rem; }
.requirements-check p { margin: .35rem 0 0; color: var(--muted); font-size: .68rem; line-height: 1.6; }

.method-section { display: grid; grid-template-columns: .8fr 1.6fr; gap: 4rem; align-items: start; padding: 3.5rem 0 1rem; border-top: 1px solid var(--line); }
.method-section h2 { margin-bottom: 0; }
.method-section ol { list-style: none; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; margin: 0; padding: 1px; background: var(--line); }
.method-section li { min-height: 150px; padding: 1.1rem; background: var(--ink-2); }
.method-section li > span { color: var(--cyan); font-size: .68rem; }
.method-section li strong { display: block; margin: .45rem 0; font-family: var(--serif); font-size: 1.1rem; }
.method-section li p { margin: 0; color: var(--muted); font-size: .76rem; line-height: 1.7; }

footer { width: min(1480px, calc(100% - 3rem)); margin: 0 auto; padding: 1.5rem 0 2.5rem; display: flex; justify-content: space-between; align-items: center; gap: 2rem; color: var(--muted); border-top: 1px solid var(--line); font-size: .72rem; }
footer > div { display: flex; align-items: center; gap: .8rem; }
footer p { max-width: 48rem; margin: 0; line-height: 1.65; }
footer strong { color: var(--text); }
.brand-mark.mini { flex: 0 0 auto; width: 34px; height: 34px; font-size: 1rem; }

.compare-dialog { width: min(920px, calc(100% - 2rem)); padding: 0; color: var(--text); background: var(--ink-2); border: 1px solid var(--line-strong); border-radius: 1rem; box-shadow: 0 28px 80px rgba(0,0,0,.58); }
.compare-dialog::backdrop { background: rgba(2, 9, 14, .82); backdrop-filter: blur(8px); }
.compare-shell { padding: 1.2rem; }
.compare-head { display: flex; align-items: start; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.compare-head span { color: var(--cyan); font-size: .68rem; letter-spacing: .14em; }
.compare-head h2 { margin: .25rem 0 0; font-family: var(--serif); font-size: 1.55rem; }
.dialog-close { padding: .48rem .65rem; color: var(--muted); background: transparent; border: 1px solid var(--line); border-radius: .45rem; cursor: pointer; }
.compare-stage { --reveal: 50%; position: relative; min-height: 480px; overflow: hidden; background: #06121b; border: 1px solid var(--line); border-radius: .75rem; }
.compare-layer { position: absolute; inset: 0; background-position: 100% 50%; background-repeat: no-repeat; background-size: 400% auto; }
.historic-layer { z-index: 2; clip-path: inset(0 calc(100% - var(--reveal)) 0 0); background-position: 33.333% 50%; }
.compare-stage::after { content: attr(data-disclaimer); position: absolute; z-index: 4; left: 50%; bottom: .7rem; transform: translateX(-50%); padding: .35rem .55rem; color: var(--amber-soft); background: rgba(7,20,31,.88); border-radius: .35rem; font-size: .64rem; white-space: nowrap; }
.compare-stage.current-real::after { color: var(--cyan-soft); }
.compare-stage.rights-pending::after { color: var(--amber-soft); }
.compare-divider { position: absolute; z-index: 3; top: 0; bottom: 0; left: var(--reveal); width: 2px; background: var(--amber); box-shadow: 0 0 0 1px rgba(7,20,31,.45); }
.compare-divider::after { content: "↔"; position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); display: grid; place-items: center; width: 2.1rem; height: 2.1rem; color: var(--ink); background: var(--amber); border-radius: 50%; font-style: normal; font-weight: 700; }
.compare-label { position: absolute; z-index: 4; top: .7rem; padding: .35rem .5rem; color: var(--text); background: rgba(7,20,31,.82); border-radius: .35rem; font-size: .66rem; }
.old-label { left: .7rem; }
.now-label { right: .7rem; }
.compare-control { display: grid; grid-template-columns: auto 1fr; gap: 1rem; align-items: center; margin-top: .9rem; color: var(--muted); font-size: .72rem; }
.compare-control input { width: 100%; accent-color: var(--amber); }
.compare-shell > p { margin: .85rem 0 0; color: var(--muted); font-size: .68rem; line-height: 1.6; }

.tour-coach { position: fixed; z-index: 60; right: 1.2rem; bottom: 1.2rem; width: min(360px, calc(100% - 2rem)); padding: 1rem; background: rgba(9, 29, 40, .97); border: 1px solid var(--line-strong); border-radius: .85rem; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.tour-coach[hidden] { display: none; }
.tour-progress { height: 3px; margin: -1rem -1rem .85rem; overflow: hidden; background: rgba(255,255,255,.08); border-radius: .85rem .85rem 0 0; }
.tour-progress i { display: block; width: 20%; height: 100%; background: var(--cyan); transition: width .25s ease; }
.tour-head { display: flex; justify-content: space-between; align-items: center; }
.tour-head span { color: var(--cyan); font-size: .68rem; letter-spacing: .12em; }
.tour-head button { color: var(--muted); background: transparent; border: 0; cursor: pointer; font-size: .68rem; }
.tour-coach > strong { display: block; margin-top: .7rem; font-family: var(--serif); font-size: 1.15rem; }
.tour-coach > p { margin: .35rem 0 .9rem; color: var(--muted); font-size: .75rem; line-height: 1.65; }
.tour-actions { display: flex; justify-content: flex-end; gap: .5rem; }
.tour-actions button { padding: .48rem .7rem; color: var(--muted); background: transparent; border: 1px solid var(--line); border-radius: .45rem; cursor: pointer; font-size: .7rem; }
.tour-actions button:last-child { color: var(--ink); background: var(--cyan); border-color: var(--cyan); font-weight: 700; }
.tour-actions button:disabled { opacity: .4; cursor: not-allowed; }

@media (max-width: 1180px) {
  .topbar { grid-template-columns: auto 1fr auto; }
  .main-nav { justify-content: flex-end; }
  .topbar-meta .status, .topbar-meta .edition { display: none; }
  .workspace { grid-template-columns: minmax(0, 1.35fr) minmax(320px, .8fr); }
  .metrics { grid-template-columns: repeat(4, 1fr); }
  .metrics > p { grid-column: 1 / -1; border-top: 1px solid var(--line); }
  .route-controls { grid-template-columns: 1fr 1fr; }
  .generate-route { grid-column: 1 / -1; }
}

@media (max-width: 980px) {
  .topbar { grid-template-columns: 1fr auto; }
  .main-nav { display: none; }
  .intro { grid-template-columns: 1fr; }
  .intro-actions { grid-column: auto; margin-top: 0; }
  .value-section, .scenario-section, .technology-heading, .delivery-heading { grid-template-columns: 1fr; gap: 2rem; }
  .workspace { grid-template-columns: 1fr; }
  .map-panel, .dossier { border-radius: 1rem; }
  .map-canvas { min-height: 440px; }
  .feature-section, .route-section { grid-template-columns: 1fr; gap: 2rem; margin-bottom: 6rem; }
  .section-copy, .route-copy { position: static; order: initial; }
  .route-copy { order: -1; }
  .ledger-grid { grid-template-columns: 1fr; }
  .delivery-grid { grid-template-columns: 1fr; }
  .ai-core-grid, .requirements-check { grid-template-columns: 1fr 1fr; }
  .method-section { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 720px) {
  .topbar, main, footer { width: min(100% - 1.4rem, 1480px); }
  .topbar { min-height: 70px; }
  main { padding-top: 2rem; }
  .intro { gap: 1rem; }
  .intro h1 { font-size: clamp(2.15rem, 12vw, 3.7rem); }
  .workspace { min-height: 0; }
  .panel-heading { padding: 1.1rem 1rem .8rem; }
  .map-note { display: none; }
  .map-canvas { min-height: 430px; margin: 0 .6rem; }
  .map-point b {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }
  .map-point { padding: .3rem; }
  .map-legend { right: 1rem; }
  .time-control { grid-template-columns: 86px 1fr; padding: 1rem; }
  .dossier { padding: 1.2rem; }
  .visual-frame { min-height: 220px; }
  .metrics { grid-template-columns: 1fr 1fr; margin-bottom: 5rem; }
  .metrics > div:nth-child(2) { border-right: 0; }
  .metrics > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .metrics > p { grid-column: 1 / -1; }
  .ask-form > div { grid-template-columns: 1fr; }
  .unknown-example { align-items: flex-end; flex-direction: column; }
  .route-controls { grid-template-columns: 1fr; }
  .generate-route { grid-column: auto; }
  .segmented { overflow-x: auto; }
  .route-summary { flex-direction: column; }
  .value-grid, .scenario-grid, .implementation-grid, .ai-core-grid, .requirements-check, .pipeline { grid-template-columns: 1fr; }
  .pipeline li:not(:last-child)::after { content: "↓"; left: 50%; right: auto; top: auto; bottom: -.65rem; transform: translateX(-50%); }
  .audit-grid { grid-template-columns: 1fr; }
  .evidence-flow { grid-template-columns: 1fr; gap: .4rem; }
  .evidence-flow i { width: 1px; height: 12px; margin: 0 auto; }
  .ledger-heading { align-items: stretch; flex-direction: column; }
  .ledger-actions { min-width: 0; }
  .fact-row { grid-template-columns: 4rem minmax(0, 1fr); }
  .fact-row > :last-child { grid-column: 2; justify-self: start; }
  .method-section ol { grid-template-columns: 1fr; }
  footer { align-items: flex-start; flex-direction: column; }
  .compare-stage { min-height: 420px; }
  .compare-control { grid-template-columns: 1fr; gap: .35rem; }
}

@media print {
  body.route-print { color: #111; background: #fff; }
  body.route-print > header, body.route-print > footer, body.route-print main > *:not(#route) { display: none !important; }
  body.route-print main { width: 100%; padding: 0; }
  body.route-print #route { display: block; margin: 0; }
  body.route-print .route-copy, body.route-print .route-controls, body.route-print .route-actions { display: none; }
  body.route-print .route-builder { color: #111; border: 1px solid #bbb; background: #fff; }
  body.route-print .route-result { padding: 1.5rem; }
  body.route-print .route-stops p, body.route-print .route-caution { color: #333; }
  body.route-print .route-stops a { color: #111; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}