:root {
  --paper: #f3efe5;
  --paper-deep: #e9e2d4;
  --paper-soft: #faf8f2;
  --ink: #17201f;
  --ink-soft: #394744;
  --muted: #66716e;
  --line: #c9c1b2;
  --line-strong: #90897d;
  --accent: #a63d2f;
  --accent-dark: #7e2c22;
  --accent-soft: #ead4ce;
  --good: #396a55;
  --warning: #99722f;
  --white: #fffefa;
  --shadow: 0 18px 60px rgba(32, 30, 24, 0.08);
  --radius: 4px;
  --font-sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-serif: Iowan Old Style, Palatino Linotype, Book Antiqua, Palatino, Georgia, serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    linear-gradient(rgba(23,32,31,0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23,32,31,0.012) 1px, transparent 1px),
    var(--paper);
  background-size: 24px 24px;
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

button, input, select { font: inherit; }
button, select, input[type="checkbox"], input[type="range"] { cursor: pointer; }
a { color: inherit; }
button:focus-visible, input:focus-visible, select:focus-visible, a:focus-visible, summary:focus-visible {
  outline: 3px solid rgba(166,61,47,0.35);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: .75rem 1rem;
  background: var(--ink);
  color: var(--white);
  text-decoration: none;
}
.skip-link:focus { top: 1rem; }

.shell { width: min(1380px, calc(100% - 40px)); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 62px;
  padding: 0 max(20px, calc((100vw - 1380px) / 2));
  border-bottom: 1px solid rgba(144,137,125,.55);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(14px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .8rem;
  font-family: var(--font-serif);
  font-size: 1.08rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: .01em;
}
.brand-mark { display: grid; width: 25px; height: 22px; position: relative; overflow: hidden; }
.brand-mark i { position: absolute; top: -5px; width: 1.5px; height: 32px; background: var(--accent); transform: rotate(-33deg); }
.brand-mark i:nth-child(1) { left: 5px; }
.brand-mark i:nth-child(2) { left: 12px; }
.brand-mark i:nth-child(3) { left: 19px; }
.header-actions { display: flex; align-items: center; gap: .5rem; }
.text-button, .language-button {
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  padding: .5rem .65rem;
}
.text-button:hover { color: var(--accent); }
.language-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  min-height: 42px;
  border: 1px solid var(--line-strong);
  background: var(--paper-soft);
  font-weight: 750;
  letter-spacing: .04em;
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(360px, .88fr);
  gap: clamp(2.5rem, 7vw, 8rem);
  align-items: center;
  padding-block: clamp(4rem, 8vw, 8.5rem) 3rem;
}
.hero-copy { max-width: 760px; }
.eyebrow {
  margin: 0 0 .75rem;
  color: var(--accent-dark);
  font-size: .74rem;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
}
h1, h2, h3 { margin-top: 0; text-wrap: balance; }
h1 {
  margin-bottom: 1rem;
  font-family: var(--font-serif);
  font-size: clamp(3.7rem, 8vw, 8.7rem);
  font-weight: 500;
  line-height: .86;
  letter-spacing: -.055em;
}
h2 {
  margin-bottom: .9rem;
  font-family: var(--font-serif);
  font-size: clamp(2.15rem, 4.8vw, 4.2rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -.035em;
}
h3 { line-height: 1.2; }
.hero-deck {
  max-width: 760px;
  margin: 0;
  color: var(--ink-soft);
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.2vw, 1.8rem);
  line-height: 1.36;
}
.status-note {
  display: block;
  margin-top: 1.65rem;
  color: var(--muted);
  font-size: .9rem;
}
.status-note strong { color: var(--ink); }
.status-dot { display: inline-block; width: 9px; height: 9px; margin-right: .38rem; border-radius: 50%; background: var(--warning); box-shadow: 0 0 0 4px rgba(153,114,47,.14); }
.hero-figure { padding: 1rem 0; }
.hero-figure svg { width: 100%; height: auto; overflow: visible; }
.hero-grid path { fill: none; stroke: var(--line); stroke-width: .9; vector-effect: non-scaling-stroke; }
.hero-trains path { fill: none; stroke: var(--ink); stroke-width: 2.2; vector-effect: non-scaling-stroke; }
.hero-trains path:nth-child(2), .hero-trains path:nth-child(5) { stroke: var(--accent); }
.hero-metrics {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 2.25rem;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}
.hero-metric { padding: 1.1rem 1.2rem 1.2rem 0; }
.hero-metric + .hero-metric { padding-left: 1.2rem; border-left: 1px solid var(--line); }
.hero-metric strong { display: block; font-family: var(--font-serif); font-size: clamp(1.8rem, 3vw, 2.65rem); font-weight: 500; line-height: 1; }
.hero-metric span { display: block; margin-top: .4rem; color: var(--muted); font-size: .82rem; }

.atlas-section {
  padding-block: clamp(4.5rem, 8vw, 8rem);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  background: var(--paper-soft);
}
.atlas-heading, .section-heading.split-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr);
  gap: 2rem 5rem;
  align-items: end;
}
.atlas-heading { margin-bottom: 2.5rem; }
.atlas-heading h2, .section-heading h2 { margin-bottom: 0; }
.atlas-intro, .split-heading > p { margin: 0 0 .35rem; color: var(--ink-soft); max-width: 580px; }
.atlas-layout { display: grid; grid-template-columns: 255px minmax(0, 1fr); gap: 2rem; align-items: start; }

.controls {
  position: sticky;
  top: 82px;
  display: grid;
  gap: 1.2rem;
  padding-right: 1.2rem;
  max-height: calc(100vh - 104px);
  overflow: auto;
  scrollbar-width: thin;
}
.control-group { display: grid; gap: .42rem; }
.controls label, .control-label, .filter-details summary {
  color: var(--ink);
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .045em;
  text-transform: uppercase;
}
.controls select, .controls input[type="date"], .controls input[type="search"] {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: var(--white);
  color: var(--ink);
  padding: .62rem .7rem;
}
.control-help { margin: 0; color: var(--muted); font-size: .78rem; line-height: 1.42; }
.chip-grid { display: flex; flex-wrap: wrap; gap: .38rem; }
.filter-chip {
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink-soft);
  padding: .28rem .5rem;
  font-size: .78rem;
  line-height: 1.2;
}
.filter-chip.is-active { border-color: var(--ink); background: var(--ink); color: var(--white); }
.filter-details { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding-block: .72rem; }
.filter-details summary { cursor: pointer; list-style-position: outside; }
.operator-filters { display: grid; gap: .48rem; padding-top: .75rem; }
.operator-row { display: grid; grid-template-columns: 16px 1fr auto; gap: .55rem; align-items: center; font-size: .8rem; text-transform: none !important; letter-spacing: 0 !important; font-weight: 650 !important; }
.operator-row input { margin: 0; }
.operator-swatch { width: 8px; height: 8px; border-radius: 50%; background: var(--operator-color); }
.operator-count { color: var(--muted); font-variant-numeric: tabular-nums; }
.segmented { display: grid; grid-template-columns: 1fr 1fr; }
.segmented button {
  border: 1px solid var(--line-strong);
  background: var(--white);
  padding: .48rem .55rem;
  color: var(--ink-soft);
  font-size: .8rem;
}
.segmented button + button { border-left: 0; }
.segmented button.is-active { background: var(--accent); color: var(--white); border-color: var(--accent); }
.check-row { display: flex; gap: .55rem; align-items: flex-start; text-transform: none !important; letter-spacing: 0 !important; font-size: .82rem !important; font-weight: 600 !important; }
.check-row input { margin-top: .22rem; accent-color: var(--accent); }
.active-filter { display: flex; align-items: center; justify-content: space-between; gap: .5rem; border-left: 3px solid var(--accent); background: var(--accent-soft); padding: .52rem .6rem; font-size: .78rem; }
.active-filter button { border: 0; background: transparent; color: var(--accent-dark); font-size: 1.15rem; line-height: 1; }
.reset-button { border: 0; border-bottom: 1px solid currentColor; background: none; color: var(--accent-dark); width: fit-content; padding: .25rem 0; font-size: .8rem; }

.visual-column { min-width: 0; }
.live-stats { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line-strong); border-bottom: 0; background: var(--paper); }
.live-stat { min-height: 83px; padding: .75rem .9rem; }
.live-stat + .live-stat { border-left: 1px solid var(--line); }
.live-stat strong { display: block; font-family: var(--font-serif); font-size: 1.65rem; font-weight: 500; font-variant-numeric: tabular-nums; line-height: 1.05; }
.live-stat span { display: block; margin-top: .35rem; color: var(--muted); font-size: .72rem; line-height: 1.25; }
.chart-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 1rem; min-height: 48px; border: 1px solid var(--line-strong); border-bottom: 0; padding: .55rem .75rem; background: var(--paper-soft); }
.legend { display: flex; flex-wrap: wrap; gap: .35rem .85rem; align-items: center; font-size: .72rem; color: var(--ink-soft); }
.legend-item { display: inline-flex; align-items: center; gap: .35rem; white-space: nowrap; }
.legend-line { width: 23px; height: 0; border-top: var(--legend-width, 1.5px) var(--legend-style, solid) var(--legend-color, var(--ink)); }
.download-actions { display: flex; gap: .35rem; }
.download-actions button { border: 1px solid var(--line); background: var(--white); color: var(--ink-soft); padding: .3rem .5rem; font-size: .7rem; font-weight: 750; }
.download-actions button:hover { border-color: var(--accent); color: var(--accent); }

.train-picker {
  display: grid;
  grid-template-columns: minmax(170px, auto) minmax(0, 1fr);
  align-items: center;
  gap: .75rem;
  border: 1px solid var(--line-strong);
  border-bottom: 0;
  padding: .65rem .75rem;
  background: var(--paper);
}
.train-picker label { color: var(--ink-soft); font-size: .72rem; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
.train-picker select { width: 100%; min-height: 42px; border: 1px solid var(--line-strong); border-radius: 0; background: var(--white); color: var(--ink); padding: .55rem .65rem; }
.train-picker select:focus { outline: 2px solid var(--accent); outline-offset: 2px; }

.chart-frame { position: relative; border: 1px solid var(--line-strong); background: #fbf9f2; overflow: hidden; box-shadow: var(--shadow); }
.chart-scroll { max-width: 100%; overflow-x: auto; overflow-y: hidden; scrollbar-color: var(--line-strong) var(--paper-deep); }
#trainChart { display: block; min-width: 1020px; width: 100%; height: auto; font-family: var(--font-sans); touch-action: pan-x pan-y; }
.chart-static-summary { width: min(680px, calc(100vw - 56px)); margin: 2rem; color: var(--ink-soft); font-family: var(--font-serif); font-size: 1.05rem; }
.js .chart-static-summary { display: none; }
.chart-bg { fill: #fbf9f2; }
.grid-hour { stroke: #8d877d; stroke-width: 1; opacity: .65; }
.grid-half { stroke: #c6c0b5; stroke-width: .7; opacity: .5; }
.grid-station { stroke: #aaa398; stroke-width: .75; opacity: .52; }
.grid-station.major { stroke: #6e6a62; stroke-width: 1.15; opacity: .68; }
.axis-border { fill: none; stroke: #5d5a54; stroke-width: 1.2; }
.axis-text { fill: #4f5855; font-size: 12px; font-variant-numeric: tabular-nums; }
.axis-title { fill: #26312f; font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.station-label { fill: #43504d; font-size: 11px; cursor: pointer; }
.station-label.major { fill: #17201f; font-weight: 750; }
.station-label:hover { fill: var(--accent); }
.station-tick { stroke: #5d5a54; stroke-width: 1; }
.train-path { fill: none; stroke: var(--train-color, #17201f); stroke-linecap: round; stroke-linejoin: round; opacity: .66; transition: opacity .12s, stroke-width .12s; vector-effect: non-scaling-stroke; }
.train-path.cat-IC { stroke-width: 2.55; }
.train-path.cat-IR, .train-path.cat-IR-N { stroke-width: 1.85; }
.train-path.cat-R-E { stroke-width: 1.5; }
.train-path.cat-R { stroke-width: 1.05; }
.train-path.cat-R-M { stroke-width: 1.05; stroke-dasharray: 4 3; }
.train-path.is-hovered { opacity: 1; stroke-width: 3.6; }
.train-path.is-selected { opacity: 1; stroke: var(--accent); stroke-width: 4.2; filter: drop-shadow(0 0 2px rgba(255,255,255,.9)); }
.train-hit { fill: none; stroke: transparent; stroke-width: 12; pointer-events: stroke; cursor: pointer; }
.train-hit:focus { stroke: rgba(166,61,47,.2); outline: none; }
.moment-line { stroke: var(--accent); stroke-width: 1.6; stroke-dasharray: 4 4; vector-effect: non-scaling-stroke; }
.moment-dot { fill: #fbf9f2; stroke: var(--accent); stroke-width: 1.7; vector-effect: non-scaling-stroke; }
.moment-dot.is-stopped { fill: var(--accent); }
.moment-label-bg { fill: var(--accent); }
.moment-label-text { fill: white; font-size: 11px; font-weight: 800; font-variant-numeric: tabular-nums; }
.no-data-text { fill: #66716e; font-family: var(--font-serif); font-size: 22px; }
.chart-tooltip {
  position: absolute;
  z-index: 10;
  pointer-events: none;
  width: min(280px, calc(100% - 24px));
  border: 1px solid var(--ink);
  background: rgba(255,254,250,.97);
  box-shadow: 0 12px 32px rgba(23,32,31,.18);
  padding: .65rem .72rem;
  font-size: .76rem;
  line-height: 1.35;
}
.chart-tooltip strong { display: block; font-size: .9rem; color: var(--ink); }
.chart-tooltip span { color: var(--muted); }

.time-player {
  display: grid;
  grid-template-columns: auto auto minmax(160px, 1fr) minmax(150px, auto);
  align-items: center;
  gap: 1rem;
  border: 1px solid var(--line-strong);
  border-top: 0;
  padding: .8rem .9rem;
  background: var(--paper);
}
.play-button { display: flex; align-items: center; gap: .5rem; border: 1px solid var(--ink); background: var(--ink); color: var(--white); padding: .48rem .7rem; }
.play-icon { font-size: .72rem; }
.time-player label { display: grid; color: var(--muted); font-size: .68rem; text-transform: uppercase; letter-spacing: .06em; }
.time-player label strong { color: var(--ink); font-size: 1rem; letter-spacing: 0; font-variant-numeric: tabular-nums; }
.time-player input[type="range"] { width: 100%; accent-color: var(--accent); }
.moment-stats { color: var(--ink-soft); font-size: .76rem; line-height: 1.3; text-align: right; }
.moment-stats strong { color: var(--ink); }

.train-detail { min-height: 126px; border: 1px solid var(--line-strong); border-top: 0; background: var(--white); }
.empty-detail { min-height: 125px; display: flex; align-items: center; justify-content: center; gap: .8rem; padding: 1.5rem; color: var(--muted); text-align: center; }
.empty-detail p { margin: 0; }
.detail-glyph { position: relative; width: 40px; height: 20px; border-top: 2px solid var(--line-strong); transform: skewX(-30deg); }
.detail-card { display: grid; grid-template-columns: minmax(210px,.65fr) minmax(0,1.35fr); }
.detail-summary { padding: 1.25rem; border-right: 1px solid var(--line); background: var(--paper-soft); }
.detail-kicker { color: var(--accent-dark); font-size: .7rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.detail-summary h3 { margin: .25rem 0 .4rem; font-family: var(--font-serif); font-size: 2rem; font-weight: 500; }
.detail-route { margin: 0; color: var(--ink-soft); font-size: .84rem; }
.detail-meta { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; margin-top: 1.1rem; }
.detail-meta div { border-top: 1px solid var(--line); padding-top: .45rem; }
.detail-meta strong { display: block; font-family: var(--font-serif); font-size: 1.2rem; font-weight: 500; }
.detail-meta span { color: var(--muted); font-size: .67rem; }
.detail-timetable { padding: 1rem 1.2rem; overflow-x: auto; }
.detail-timetable table { width: 100%; border-collapse: collapse; font-size: .76rem; }
.detail-timetable th { color: var(--muted); font-size: .64rem; text-align: left; text-transform: uppercase; letter-spacing: .06em; border-bottom: 1px solid var(--line-strong); padding: .3rem .45rem; }
.detail-timetable td { border-bottom: 1px solid var(--line); padding: .36rem .45rem; font-variant-numeric: tabular-nums; }
.detail-timetable tr:last-child td { border-bottom: 0; }
.detail-timetable th:nth-child(n+2), .detail-timetable td:nth-child(n+2) { text-align: right; }

.reading, .corridor-section { padding-block: clamp(4.5rem, 8vw, 8rem); }
.section-heading { margin-bottom: 2.5rem; }
.reading-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-strong); }
.reading-grid article { padding: 1.6rem 1.4rem 0 0; }
.reading-grid article + article { border-left: 1px solid var(--line); padding-left: 1.4rem; }
.reading-grid svg { width: 160px; max-width: 55%; }
.mini-grid { fill: none; stroke: var(--line); stroke-width: 1; }
.mini-train { fill: none; stroke: var(--accent); stroke-width: 2; }
.reading-grid h3 { margin: .75rem 0 .45rem; font-family: var(--font-serif); font-size: 1.35rem; }
.reading-grid p { margin: 0; color: var(--ink-soft); font-size: .9rem; }

.findings-section { padding-block: clamp(4.5rem, 8vw, 8rem); background: var(--ink); color: var(--paper-soft); }
.findings-section .eyebrow { color: #d78a7c; }
.findings-section .split-heading > p { color: #bfc7c4; }
.findings-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 2.5rem; border-top: 1px solid #65706d; }
.finding { padding: 1.6rem 1.4rem 0 0; }
.finding + .finding { border-left: 1px solid #56615e; padding-left: 1.4rem; }
.finding-index { color: #d78a7c; font-family: var(--font-serif); font-size: 1.1rem; }
.finding strong { display: block; margin: .6rem 0 .5rem; font-family: var(--font-serif); font-size: clamp(1.65rem, 3vw, 2.55rem); font-weight: 500; line-height: 1.04; }
.finding p { margin: 0; color: #c8d0cd; font-size: .85rem; }

.corridor-browser {
  display: grid;
  grid-template-columns: minmax(220px, 1.2fr) minmax(210px, .8fr) auto;
  gap: 1rem;
  align-items: end;
  margin: 2rem 0 1.35rem;
  padding: 1rem;
  border: 1px solid var(--line-strong);
  background: var(--paper-deep);
}
.corridor-browser label { display: grid; gap: .4rem; color: var(--ink-soft); font-size: .72rem; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
.corridor-browser input, .corridor-browser select { width: 100%; min-height: 43px; border: 1px solid var(--line-strong); border-radius: 0; background: var(--paper); color: var(--ink); padding: .65rem .75rem; font: inherit; font-size: .9rem; text-transform: none; letter-spacing: 0; }
.corridor-browser input:focus, .corridor-browser select:focus { outline: 2px solid var(--accent); outline-offset: 2px; }
.corridor-browser p { margin: 0; padding-bottom: .72rem; color: var(--muted); font-size: .78rem; white-space: nowrap; }
.corridor-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-strong); }
.corridor-card {
  position: relative;
  min-height: 225px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  padding: 1.25rem 1.25rem 1.35rem 0;
  text-align: left;
}
.corridor-card:not(:nth-child(3n+1)) { border-left: 1px solid var(--line); padding-left: 1.25rem; }
.corridor-card:hover, .corridor-card.is-active { background: rgba(255,254,250,.5); }
.corridor-card.is-active::before { content: ""; position: absolute; top: -1px; left: 0; right: 0; height: 3px; background: var(--accent); }
.corridor-topline { display: flex; justify-content: space-between; gap: .75rem; align-items: baseline; }
.corridor-card .corridor-no { color: var(--muted); font-size: .69rem; font-weight: 800; letter-spacing: .09em; }
.corridor-group-tag { max-width: 72%; overflow: hidden; color: var(--accent); font-size: .64rem; font-weight: 800; letter-spacing: .055em; text-overflow: ellipsis; text-transform: uppercase; white-space: nowrap; }
.corridor-card h3 { margin: .7rem 0 .45rem; font-family: var(--font-serif); font-size: 1.45rem; font-weight: 500; }
.corridor-card p { margin: 0; color: var(--muted); font-size: .8rem; }
.corridor-card .corridor-stats { display: flex; gap: 1rem; margin-top: 1.1rem; color: var(--ink-soft); font-size: .72rem; }
.corridor-card .corridor-stats strong { font-family: var(--font-serif); font-size: 1.1rem; font-weight: 500; }
.corridor-empty { grid-column: 1 / -1; margin: 0; padding: 2rem 0; color: var(--muted); font-family: var(--font-serif); font-size: 1.2rem; }
.corridor-more { display: block; margin: 1.5rem auto 0; border: 1px solid var(--line-strong); background: transparent; color: var(--ink); padding: .78rem 1.15rem; font-weight: 800; }
.corridor-more:hover { border-color: var(--accent); color: var(--accent); }
.corridor-more[hidden] { display: none; }

.method-section { padding-block: clamp(4.5rem, 8vw, 8rem); border-top: 1px solid var(--line-strong); background: var(--paper-deep); }
.method-layout { display: grid; grid-template-columns: minmax(260px,.65fr) minmax(0,1.35fr); gap: 3rem 8rem; }
.method-copy { max-width: 820px; }
.method-copy > p { margin-top: 0; font-family: var(--font-serif); font-size: 1.12rem; line-height: 1.58; }
.source-list { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 2rem; background: var(--line-strong); border: 1px solid var(--line-strong); }
.source-card { display: block; background: var(--paper-soft); padding: 1rem; text-decoration: none; }
.source-card:hover { background: var(--white); }
.source-card strong { display: block; font-size: .84rem; }
.source-card span { display: block; margin-top: .3rem; color: var(--muted); font-size: .73rem; }
.lifecycle-note { border-left: 3px solid var(--warning); padding-left: 1rem; color: var(--ink-soft); font-family: var(--font-sans) !important; font-size: .82rem !important; }
.interactive-fallback { grid-column: 1 / -1; color: #c8d0cd; }

.site-footer { display: flex; justify-content: space-between; gap: 2rem; padding-block: 2rem 3rem; color: var(--muted); font-size: .78rem; }
.site-footer p { margin: 0; }
.site-footer strong { color: var(--ink); }
.site-footer a { text-underline-offset: 3px; }
.footer-links { display: flex; align-items: center; gap: 1rem; }
.js #backTop {
  position: fixed;
  right: max(16px, calc((100vw - 1380px) / 2));
  z-index: 80;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  min-height: 48px;
  padding: .65rem .9rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper-soft);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity .16s ease, transform .16s ease, bottom .16s ease;
}
.js #backTop.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0); }

@media (max-width: 1100px) {
  .hero { grid-template-columns: 1fr 380px; gap: 3rem; }
  .atlas-layout { grid-template-columns: 220px minmax(0,1fr); gap: 1.25rem; }
  .controls { padding-right: .4rem; }
  .live-stat { padding-inline: .65rem; }
  .corridor-browser { grid-template-columns: 1fr 1fr; }
  .corridor-browser p { grid-column: 1 / -1; padding-bottom: 0; }
  .corridor-grid { grid-template-columns: repeat(2,1fr); }
  .corridor-card:not(:nth-child(3n+1)) { border-left: 0; padding-left: 0; }
  .corridor-card:nth-child(even) { border-left: 1px solid var(--line); padding-left: 1.25rem; }
}

@media (max-width: 820px) {
  .shell { width: min(100% - 28px, 1380px); }
  .site-header { padding-inline: 14px; }
  .hero { grid-template-columns: 1fr; padding-top: 4rem; }
  .hero-figure { max-width: 560px; margin-top: -1rem; }
  .hero-metrics { grid-template-columns: 1fr 1fr; }
  .hero-metric:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); padding-left: 0; }
  .hero-metric:nth-child(4) { border-top: 1px solid var(--line); }
  .atlas-heading, .section-heading.split-heading { grid-template-columns: 1fr; gap: 1rem; align-items: start; }
  .atlas-layout { grid-template-columns: 1fr; }
  .controls { position: static; max-height: none; grid-template-columns: 1fr 1fr; gap: 1rem; overflow: visible; padding: 1rem; border: 1px solid var(--line-strong); background: var(--paper); }
  .filter-details, .palette-control, .check-row, .active-filter, .reset-button { grid-column: auto; }
  .live-stats { grid-template-columns: 1fr 1fr; }
  .live-stat:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .live-stat:nth-child(4) { border-top: 1px solid var(--line); }
  .time-player { grid-template-columns: auto 1fr; }
  .time-player input[type="range"] { grid-column: 1 / -1; grid-row: 2; }
  .moment-stats { text-align: left; }
  .detail-card { grid-template-columns: 1fr; }
  .detail-summary { border-right: 0; border-bottom: 1px solid var(--line); }
  .reading-grid, .findings-grid { grid-template-columns: 1fr; }
  .reading-grid article + article, .finding + .finding { border-left: 0; border-top: 1px solid var(--line); padding-left: 0; margin-top: 1.5rem; }
  .findings-grid .finding + .finding { border-color: #56615e; }
  .corridor-browser { grid-template-columns: 1fr 1fr; }
  .method-layout { grid-template-columns: 1fr; gap: 1.5rem; }
}

@media (max-width: 560px) {
  .brand { font-size: 1rem; }
  .text-button { display: none; }
  h1 { font-size: clamp(3.7rem, 20vw, 6rem); }
  .hero { gap: 1.5rem; padding-bottom: 2.5rem; }
  .hero-metrics { margin-top: 1rem; }
  .hero-metric { padding-right: .7rem; }
  .hero-metric + .hero-metric { padding-left: .7rem; }
  .controls { grid-template-columns: 1fr; }
  .chart-toolbar { align-items: flex-start; }
  .legend { max-width: calc(100% - 84px); }
  .time-player { gap: .7rem; }
  .play-button span:last-child { display: none; }
  .moment-stats { grid-column: 1 / -1; }
  .corridor-browser { grid-template-columns: 1fr; }
  .corridor-browser p { grid-column: auto; }
  .corridor-grid { grid-template-columns: 1fr; }
  .corridor-card:nth-child(even) { border-left: 0; padding-left: 0; }
  .source-list { grid-template-columns: 1fr; }
  .site-footer { flex-direction: column; gap: .6rem; }
  .footer-links { justify-content: space-between; }
  .train-picker { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

@media print {
  .site-header, .controls, .chart-toolbar, .time-player, .train-detail, .corridor-section, .site-footer { display: none !important; }
  body { background: white; }
  .atlas-section { border: 0; padding: 0; }
  .atlas-layout { display: block; }
  .chart-frame { box-shadow: none; }
  #trainChart { min-width: 0; }
}