/* build-research-atlas managed asset: reader-ui-v2 */
:root {
  --paper: #f4f7f6;
  --paper-bright: #ffffff;
  --ink: #14242b;
  --ink-soft: #566b73;
  --line: #cbd8d8;
  --line-strong: #8fa6a8;
  --teal: #137c78;
  --cobalt: #285c8f;
  --signal: #c6483e;
  --night: #152a33;
  --night-soft: #b9ccce;
  --focus-dark: #084f74;
  --focus-light: #ffffff;
  --shadow: 0 18px 48px rgba(20, 36, 43, .10);
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --display: Georgia, "Times New Roman", serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  color: var(--ink);
  background: var(--paper);
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  min-width: 280px;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(40, 92, 143, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(40, 92, 143, .035) 1px, transparent 1px),
    var(--paper);
  background-size: 32px 32px;
  font: 400 1rem/1.62 var(--sans);
}

body, input, select, button { font-family: var(--sans); }

a { color: var(--cobalt); text-underline-offset: .18em; }
a:hover { color: var(--signal); }

button, input, select { font: inherit; }
button, select { cursor: pointer; }

:focus-visible {
  outline: 3px solid var(--focus-dark);
  outline-offset: 3px;
  box-shadow: 0 0 0 6px var(--focus-light);
}

[hidden] { display: none !important; }

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: .6rem;
  left: .6rem;
  transform: translateY(-160%);
  padding: .7rem 1rem;
  color: #fff;
  background: var(--night);
  font-weight: 750;
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  min-height: 68px;
  padding: .7rem clamp(1rem, 3vw, 3rem);
  background: rgba(244, 247, 246, .95);
  border-bottom: 1px solid var(--line-strong);
  backdrop-filter: blur(14px);
}

.site-mark {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  min-height: 44px;
  color: var(--ink);
  font: 750 .73rem/1 var(--mono);
  letter-spacing: .11em;
  text-decoration: none;
}

.site-mark > span:first-child {
  color: var(--teal);
  font-size: 1.5rem;
  line-height: 1;
}

.site-header nav {
  display: flex;
  gap: clamp(.7rem, 2vw, 1.6rem);
  align-items: center;
}

.site-header nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink-soft);
  font-size: .82rem;
  font-weight: 700;
  text-decoration: none;
}

.site-header nav a:hover { color: var(--signal); }

.hero {
  width: min(1500px, calc(100% - 2rem));
  min-height: min(690px, calc(100vh - 68px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(310px, .65fr);
  gap: clamp(3rem, 8vw, 9rem);
  align-items: end;
  padding: clamp(5rem, 11vw, 10rem) clamp(0rem, 3vw, 3rem) clamp(4rem, 8vw, 7rem);
}

.hero-copy { max-width: 68rem; }

.eyebrow {
  margin: 0 0 .8rem;
  color: var(--teal);
  font: 750 .72rem/1.35 var(--mono);
  letter-spacing: .11em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 14ch;
  margin: 0;
  font: 500 clamp(3.6rem, 9vw, 9rem)/.88 var(--display);
  letter-spacing: -.065em;
  text-wrap: balance;
  overflow-wrap: anywhere;
}

.hero-subtitle {
  max-width: 50rem;
  margin: 2rem 0 0;
  color: var(--ink);
  font: 500 clamp(1.2rem, 2.2vw, 2rem)/1.35 var(--display);
}

.scope-note {
  max-width: 52rem;
  margin: 1rem 0 0;
  color: var(--ink-soft);
}

.hero-ledger {
  margin: 0;
  border-top: 4px solid var(--ink);
}

.hero-ledger div {
  display: grid;
  grid-template-columns: minmax(8rem, 1fr) auto;
  gap: 1rem;
  align-items: baseline;
  min-height: 72px;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line-strong);
}

.hero-ledger dt {
  color: var(--ink-soft);
  font: 700 .72rem/1.4 var(--mono);
  letter-spacing: .04em;
}

.hero-ledger dd {
  margin: 0;
  color: var(--ink);
  font: 500 clamp(1.35rem, 2.4vw, 2.2rem)/1 var(--display);
  text-align: right;
}

.section-shell {
  width: min(1500px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(4.5rem, 8vw, 8rem) clamp(0rem, 3vw, 3rem);
}

.map-section, .route-section, .timeline-section, .index-section, .scope-section {
  border-top: 1px solid var(--line-strong);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, .7fr);
  gap: clamp(1.5rem, 5vw, 5rem);
  align-items: end;
  margin-bottom: 2rem;
}

.section-heading.compact { grid-template-columns: 1fr; }

.section-heading h2 {
  max-width: 17ch;
  margin: 0;
  font: 500 clamp(2.6rem, 5.8vw, 5.8rem)/.98 var(--display);
  letter-spacing: -.05em;
  text-wrap: balance;
}

.section-heading > p {
  max-width: 50rem;
  margin: 0;
  color: var(--ink-soft);
}

.atlas-controls {
  display: grid;
  grid-template-columns: minmax(230px, 1.5fr) repeat(3, minmax(145px, .7fr)) auto;
  gap: .75rem;
  align-items: end;
  padding: 1rem;
  background: rgba(255, 255, 255, .88);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
}

.atlas-controls label {
  display: grid;
  gap: .35rem;
  color: var(--ink-soft);
  font: 700 .68rem/1.3 var(--mono);
  letter-spacing: .025em;
}

.atlas-controls input,
.atlas-controls select {
  width: 100%;
  min-height: 46px;
  padding: .55rem .7rem;
  color: var(--ink);
  background: var(--paper-bright);
  border: 1px solid var(--line-strong);
  border-radius: 0;
}

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 46px;
  padding: .65rem 1rem;
  border: 1px solid var(--ink);
  border-radius: 0;
  font-size: .82rem;
  font-weight: 750;
  text-decoration: none;
}

.button.primary { color: #fff; background: var(--ink); }
.button.primary:hover { color: #fff; background: var(--signal); border-color: var(--signal); }
.button.quiet { color: var(--ink); background: transparent; }
.button.quiet:hover { color: var(--signal); border-color: var(--signal); background: #fff; }

.atlas-workbench {
  display: grid;
  grid-template-columns: minmax(600px, 1.45fr) minmax(300px, .55fr);
  gap: 1rem;
  margin-top: 1rem;
}

.map-stage {
  position: relative;
  min-height: 680px;
  background:
    radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 1) 0 13%, rgba(219, 234, 233, .72) 14% 52%, rgba(255, 255, 255, .76) 53%),
    #fff;
  border: 1px solid var(--line-strong);
  overflow: hidden;
}

.desktop-map-wrap { width: 100%; min-height: 680px; }
.atlas-svg { display: block; width: 100%; height: 680px; }
.mobile-clusters { display: none; }

.map-ring {
  fill: none;
  stroke: #9eb3b4;
  stroke-width: 1;
  stroke-dasharray: 3 6;
}

.map-ring-label {
  fill: #536d72;
  font: 11px var(--mono);
  letter-spacing: .04em;
  pointer-events: none;
}

.map-spoke { stroke-width: 1.25; opacity: .58; }

.map-route-label {
  font: 750 12px var(--sans);
  letter-spacing: .025em;
  pointer-events: none;
}

.map-core { fill: var(--night); stroke: #fff; stroke-width: 4; }
.map-core-title { fill: #fff; font: 500 18px var(--display); text-anchor: middle; }
.map-core-sub { fill: #8ed4cf; font: 9px var(--mono); text-anchor: middle; letter-spacing: .08em; }

.cluster-button { cursor: pointer; }
.cluster-button.is-empty { visibility: hidden; pointer-events: none; }
.cluster-hit { fill: transparent; stroke: transparent; }
.cluster-mark {
  fill: #fff;
  stroke: var(--route-color, var(--teal));
  stroke-width: 3;
  filter: drop-shadow(0 2px 4px rgba(20, 36, 43, .18));
  transition: fill .16s ease, stroke-width .16s ease, transform .16s ease;
  transform-box: fill-box;
  transform-origin: center;
}

.cluster-count {
  fill: var(--route-text, var(--ink));
  font: 750 13px var(--mono);
  text-anchor: middle;
  pointer-events: none;
}

.cluster-unit {
  fill: #63787b;
  font: 8px var(--sans);
  text-anchor: middle;
  pointer-events: none;
}

.cluster-button:hover .cluster-mark,
.cluster-button:focus-visible .cluster-mark {
  fill: #eef8f7;
  stroke-width: 5;
  transform: scale(1.06);
}

.cluster-button:focus { outline: none; }
.cluster-button:focus-visible .cluster-hit { stroke: var(--focus-light); stroke-width: 8; }
.cluster-button:focus-visible .cluster-mark,
.cluster-button.is-selected:focus-visible .cluster-mark { stroke: var(--focus-dark); stroke-width: 6; }
.cluster-button.is-selected .cluster-mark { fill: #fff7ed; stroke: var(--signal); stroke-width: 6; }
.cluster-button.is-selected .cluster-unit { fill: var(--signal); font-weight: 750; }

.group-inspector {
  min-width: 0;
  padding: clamp(1.2rem, 2.5vw, 2rem);
  color: #fff;
  background: var(--night);
  border: 1px solid var(--night);
}

.group-inspector .eyebrow { color: #8ed4cf; }
.group-inspector h3 {
  margin: .2rem 0 1rem;
  font: 500 clamp(1.8rem, 3vw, 2.8rem)/1.04 var(--display);
  letter-spacing: -.03em;
}

.group-inspector p { color: var(--night-soft); }
.inspector-route { color: #fff !important; font-weight: 750; }
.inspector-list-wrap { max-height: 460px; overflow-y: auto; border-top: 1px solid #476069; border-bottom: 1px solid #476069; }
.inspector-list { margin: 0; padding: 0; list-style: none; }
.inspector-list li + li { border-top: 1px solid #3a515a; }

.inspector-link {
  display: grid;
  gap: .3rem;
  min-height: 58px;
  padding: .72rem .35rem;
  color: #fff;
  text-decoration: none;
}

.inspector-link:hover,
.inspector-link:focus-visible {
  color: #fff;
  background: #203b45;
  box-shadow: inset 4px 0 0 var(--focus-light), inset 0 0 0 3px var(--focus-dark);
  outline: 3px solid var(--focus-light);
  outline-offset: 2px;
}

.inspector-link b { font-size: .83rem; line-height: 1.35; overflow-wrap: anywhere; }
.inspector-link span { color: #a9c0c3; font: .67rem/1.3 var(--mono); }
.inspector-actions { display: grid; grid-template-columns: 1fr; gap: .6rem; margin-top: 1rem; }
.group-inspector .button.primary { color: var(--night); background: #fff; border-color: #fff; }
.group-inspector .button.primary:hover { color: #fff; background: var(--signal); border-color: var(--signal); }
.group-inspector .button.quiet { color: #fff; border-color: #789096; }

.map-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
  padding: 1rem;
  background: rgba(255, 255, 255, .78);
  border: 1px solid var(--line-strong);
}

.map-actions p { margin: 0; color: var(--ink-soft); font: .72rem/1.45 var(--mono); }
.map-actions > div { display: flex; flex-wrap: wrap; gap: .55rem; }

.empty-message { margin: 0; padding: 1.2rem; color: var(--ink-soft); }

.route-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line-strong);
  border-left: 1px solid var(--line-strong);
}

.route-card {
  min-height: 260px;
  padding: 1.35rem;
  background: rgba(255, 255, 255, .76);
  border-right: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  border-top: 5px solid var(--route-color);
}

.route-card .route-code { color: var(--route-text); font: 750 .7rem var(--mono); }
.route-card h3 { margin: .9rem 0 .65rem; color: var(--route-text); font: 500 1.55rem/1.1 var(--display); }
.route-card p { color: var(--ink-soft); }
.route-card strong { display: block; margin-top: 1rem; color: var(--ink); font-size: .84rem; }
.route-card button { width: 100%; margin-top: 1rem; }

.year-timeline {
  display: flex;
  align-items: end;
  gap: clamp(.45rem, 1.4vw, 1.2rem);
  min-height: 240px;
  padding: 1.5rem 1.2rem 0;
  overflow-x: auto;
  background: rgba(255, 255, 255, .8);
  border: 1px solid var(--line-strong);
}

.year-item {
  display: grid;
  grid-template-rows: auto var(--year-height, 20px) auto;
  gap: .4rem;
  align-items: end;
  justify-items: center;
  min-width: 54px;
  color: var(--ink-soft);
  font: 700 .66rem/1 var(--mono);
}

.year-count { color: var(--signal); }
.year-bar { width: 16px; height: var(--year-height, 20px); background: var(--teal); border-top: 4px solid var(--night); }
.year-item b { min-height: 32px; color: var(--ink); writing-mode: vertical-rl; }

.artifact-links { display: grid; gap: .4rem; margin: .5rem 0 0; padding: 0; list-style: none; }
.artifact-links a { display: inline-flex; align-items: center; min-height: 44px; font-weight: 700; }

.index-heading { align-items: end; }
.index-heading > p { font: 700 .75rem var(--mono); }

.active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  min-height: 2rem;
  margin-bottom: 1rem;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: .3rem .55rem;
  color: var(--ink-soft);
  background: #fff;
  border: 1px solid var(--line-strong);
  font: 700 .68rem/1.2 var(--mono);
}

.paper-index {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  align-items: start;
}

.index-route {
  min-width: 0;
  background: rgba(255, 255, 255, .88);
  border: 1px solid var(--line-strong);
  border-top: 5px solid var(--route-color);
}

.index-route > header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  min-height: 62px;
  padding: .8rem 1rem;
  color: var(--route-text);
  background: color-mix(in srgb, var(--route-color) 7%, #fff);
  border-bottom: 1px solid var(--line);
}

.index-route > header h3 { margin: 0; font: 500 1.25rem/1.2 var(--display); }
.index-route > header span { white-space: nowrap; font: 750 .67rem var(--mono); }
.index-level + .index-level { border-top: 1px solid var(--line-strong); }

.index-level h4 {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: .55rem;
  align-items: center;
  margin: 0;
  padding: .62rem .8rem;
  color: var(--ink-soft);
  background: #eaf0ef;
  font: 700 .7rem/1.3 var(--sans);
}

.index-level h4 b { color: var(--route-text); font-family: var(--mono); }
.index-level h4 small { font: .65rem var(--mono); }
.paper-label-list { margin: 0; padding: 0; list-style: none; }
.paper-label-list li + li { border-top: 1px solid var(--line); }

.paper-label-link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 7rem;
  gap: .75rem;
  align-items: start;
  min-height: 94px;
  padding: .82rem .85rem;
  color: var(--ink);
  background: #fff;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.paper-label-link:hover,
.paper-label-link:focus-visible {
  position: relative;
  z-index: 1;
  color: var(--ink);
  background: color-mix(in srgb, var(--route-color) 7%, #fff);
  box-shadow: inset 4px 0 0 var(--route-color), inset 0 0 0 3px var(--focus-dark);
  outline: 3px solid var(--focus-light);
  outline-offset: 2px;
}

.paper-label-titles { display: grid; gap: .18rem; min-width: 0; }
.paper-label-titles b { font-size: .9rem; line-height: 1.35; }
.paper-label-titles span { color: var(--ink-soft); font-size: .67rem; line-height: 1.3; }
.paper-label-titles .paper-label-summary {
  display: -webkit-box;
  margin-top: .3rem;
  overflow: hidden;
  color: var(--ink-soft);
  font: .75rem/1.45 var(--sans);
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}
.paper-label-facts { display: grid; gap: .2rem; color: var(--ink-soft); font: .63rem/1.35 var(--mono); text-align: right; }
.paper-label-facts strong { display: block; color: var(--route-text); }

.empty-panel,
.not-found,
.noscript-note {
  max-width: 760px;
  margin: 2rem auto;
  padding: clamp(1.4rem, 4vw, 3rem);
  background: #fff;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
}

.empty-panel h3,
.not-found h1,
.noscript-note h2 { margin: 0 0 .8rem; font-family: var(--display); }

.scope-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line-strong);
  border-left: 1px solid var(--line-strong);
}

.scope-grid article {
  min-height: 240px;
  padding: clamp(1.2rem, 3vw, 2.4rem);
  background: rgba(255, 255, 255, .74);
  border-right: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.scope-grid h3 { margin-top: 0; font: 500 1.8rem var(--display); }
.scope-grid p { color: var(--ink-soft); }

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: 2rem clamp(1rem, 3vw, 3rem);
  color: #d5e1e1;
  background: var(--night);
  border-top: 5px solid var(--teal);
}

.site-footer p { margin: 0; }
.site-footer p:last-child { color: #9bb1b5; text-align: right; }

/* 详情页 */
.paper-main { width: min(1220px, calc(100% - 2rem)); min-height: 70vh; margin: 0 auto; }

.paper-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, .55fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: end;
  padding: clamp(5rem, 10vw, 9rem) clamp(0rem, 2vw, 2rem) clamp(3rem, 7vw, 6rem);
  border-bottom: 1px solid var(--line-strong);
}

.paper-hero h1 {
  margin: 0;
  font: 500 clamp(2.8rem, 6.5vw, 6.6rem)/.97 var(--display);
  letter-spacing: -.052em;
  overflow-wrap: anywhere;
}

.paper-local-title { margin: 1.1rem 0 0; color: var(--ink-soft); font-size: 1.05rem; }
.paper-elevator { max-width: 52rem; margin: 1.4rem 0 0; font: 500 1.25rem/1.5 var(--display); }

.paper-facts { margin: 0; border-top: 4px solid var(--route-color, var(--teal)); }
.paper-facts div { display: grid; grid-template-columns: 6rem 1fr; gap: .75rem; padding: .72rem 0; border-bottom: 1px solid var(--line-strong); }
.paper-facts dt { color: var(--ink-soft); font: 700 .68rem var(--mono); }
.paper-facts dd { margin: 0; font-size: .84rem; text-align: right; overflow-wrap: anywhere; }

.paper-section-nav {
  display: flex;
  gap: 1.2rem;
  overflow-x: auto;
  padding: .75rem 0;
  border-bottom: 1px solid var(--line-strong);
  white-space: nowrap;
}

.paper-section-nav a { display: inline-flex; align-items: center; min-height: 44px; color: var(--ink-soft); font-size: .78rem; font-weight: 750; text-decoration: none; }

.paper-section {
  display: grid;
  grid-template-columns: minmax(6rem, .25fr) minmax(0, 1fr);
  gap: clamp(1rem, 5vw, 5rem);
  padding: clamp(3rem, 7vw, 6rem) clamp(0rem, 2vw, 2rem);
  border-bottom: 1px solid var(--line-strong);
  scroll-margin-top: 5rem;
}

.paper-section > * { min-width: 0; }

.section-index { color: var(--teal); font: 750 .72rem var(--mono); letter-spacing: .09em; }
.paper-section h2 { max-width: 19ch; margin: 0 0 1.2rem; font: 500 clamp(2rem, 4vw, 4.4rem)/1 var(--display); letter-spacing: -.04em; }
.paper-section h3 { font-family: var(--display); }
.paper-section p { max-width: 66rem; color: var(--ink-soft); }

.mechanism-figure { min-width: 0; max-width: 100%; margin: 2rem 0 1rem; }
.mechanism-scroll { width: 100%; max-width: 100%; overflow-x: auto; padding: .75rem; background: #fff; border: 1px solid var(--line-strong); }
#mechanismDiagram { display: block; width: 100%; min-width: 720px; height: auto; }
.mechanism-figure figcaption { margin-top: .55rem; color: var(--ink-soft); font-size: .72rem; }
.diagram-box { fill: #fff; stroke: var(--route-color, var(--teal)); stroke-width: 2.5; }
.diagram-step { fill: var(--route-text, var(--ink)); font: 700 12px var(--sans); text-anchor: middle; }
.diagram-number { fill: var(--route-color, var(--teal)); font: 750 10px var(--mono); text-anchor: middle; }
.diagram-arrow { stroke: var(--signal); stroke-width: 2.5; fill: none; marker-end: url(#arrowhead); }

.mechanism-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .7rem; padding: 0; list-style: none; counter-reset: steps; }
.mechanism-steps li { min-height: 110px; padding: 1rem; background: #fff; border: 1px solid var(--line-strong); counter-increment: steps; }
.mechanism-steps li::before { content: counter(steps, decimal-leading-zero); display: block; margin-bottom: .65rem; color: var(--route-text, var(--teal)); font: 750 .68rem var(--mono); }

.evidence-list,
.limitations-list,
.implications-list { display: grid; gap: .75rem; margin: 1.2rem 0 0; padding: 0; list-style: none; }

.evidence-list li,
.limitations-list li,
.implications-list li { position: relative; padding: 1rem 1rem 1rem 2.6rem; background: #fff; border: 1px solid var(--line-strong); }

.evidence-list li::before,
.limitations-list li::before,
.implications-list li::before { position: absolute; left: 1rem; top: 1rem; font: 750 .72rem var(--mono); }
.evidence-list li::before { content: "E"; color: var(--teal); }
.limitations-list li::before { content: "!"; color: var(--signal); }
.implications-list li::before { content: "→"; color: var(--cobalt); }

.evidence-locations-block,
.paper-version-block {
  margin-top: 1.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line-strong);
}

.evidence-locations-block h3,
.paper-version-block h3 { margin: 0 0 .75rem; font: 500 1.35rem/1.2 var(--display); }

.evidence-locations-list { display: grid; gap: .6rem; margin: 0; padding: 0; list-style: none; }
.evidence-locations-list li { display: grid; gap: .25rem; padding: .8rem; background: #fff; border: 1px solid var(--line); }
.evidence-locations-list b { font-size: .82rem; }
.evidence-locations-list span { color: var(--ink-soft); font: .68rem/1.4 var(--mono); }
.evidence-locations-list a { width: fit-content; min-height: 40px; padding-top: .45rem; font-size: .75rem; font-weight: 700; }
.paper-version-block p { margin-bottom: 0; }

.source-links { display: flex; flex-wrap: wrap; gap: .65rem; margin-top: 1.4rem; }
.related-block { margin-top: 2rem; padding-top: 1.2rem; border-top: 1px solid var(--line-strong); }
.related-block ul { display: grid; gap: .55rem; padding-left: 1.2rem; }
.related-block a { display: inline-flex; align-items: center; min-height: 44px; }

.not-found { margin-top: 8rem; margin-bottom: 8rem; }
.not-found h1 { font-size: clamp(2.5rem, 7vw, 6rem); line-height: .95; letter-spacing: -.05em; }

@media (max-width: 1320px) {
  .atlas-controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .atlas-controls .search-control { grid-column: 1 / -1; }
  .atlas-workbench { grid-template-columns: minmax(0, 1fr); }
  .map-stage { min-height: 680px; }
  .desktop-map-wrap, .atlas-svg { min-height: 680px; height: 680px; }
  .group-inspector { display: grid; grid-template-columns: minmax(0, 1fr); }
  .inspector-list-wrap { max-height: 360px; }
  .route-cards, .paper-index, .scope-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mechanism-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  html { scroll-behavior: auto; }
  body { background-size: 24px 24px; }
  .site-header { position: relative; align-items: flex-start; flex-wrap: wrap; }
  .site-header nav { width: 100%; overflow-x: auto; border-top: 1px solid var(--line); }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 3rem; padding-top: 5rem; }
  .hero h1 { font-size: clamp(3.2rem, 16vw, 5.5rem); }
  .hero-ledger dd { font-size: 1.4rem; }
  .section-heading { grid-template-columns: 1fr; gap: 1rem; }
  .section-heading h2 { font-size: clamp(2.6rem, 13vw, 4.4rem); }
  .atlas-controls { grid-template-columns: 1fr; }
  .atlas-controls .search-control { grid-column: auto; }
  .desktop-map-wrap { display: none; }
  .map-stage { min-height: 0; padding: .75rem; overflow: visible; }
  .mobile-clusters { display: block; }
  .mobile-clusters > header { margin-bottom: 1rem; }
  .mobile-clusters h3 { margin: .1rem 0 .35rem; font: 500 1.7rem/1.1 var(--display); }
  .mobile-clusters header > p:last-child { margin: 0; color: var(--ink-soft); font-size: .78rem; }
  .mobile-cluster-grid { display: grid; gap: .85rem; }
  .mobile-route-group { background: #fff; border: 1px solid var(--line-strong); border-top: 4px solid var(--route-color); }
  .mobile-route-group h4 { margin: 0; padding: .65rem .7rem; color: var(--route-text); background: color-mix(in srgb, var(--route-color) 7%, #fff); font: 500 1.05rem var(--display); }
  .mobile-route-buttons { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mobile-cluster-button { display: grid; grid-template-columns: auto 1fr; gap: .16rem .4rem; align-content: center; min-width: 0; min-height: 68px; padding: .55rem .65rem; color: var(--ink); background: #fff; border: 0; box-shadow: inset 0 0 0 1px var(--line); text-align: left; }
  .mobile-cluster-button:hover { position: relative; z-index: 1; background: color-mix(in srgb, var(--route-color) 7%, #fff); box-shadow: inset 0 0 0 3px var(--route-color); }
  .mobile-cluster-button:focus-visible { position: relative; z-index: 2; background: #fff; box-shadow: inset 0 0 0 3px var(--focus-dark); outline: 3px solid var(--focus-light); outline-offset: -6px; }
  .mobile-cluster-button[aria-pressed="true"] { background: #fff7ed; box-shadow: inset 0 0 0 4px var(--signal); }
  .mobile-cluster-button[aria-pressed="true"]:focus-visible { box-shadow: inset 0 0 0 3px var(--focus-dark); outline: 3px solid var(--focus-light); }
  .mobile-cluster-button .mobile-level { color: var(--route-text); font: 750 .7rem var(--mono); }
  .mobile-cluster-button .mobile-count { justify-self: end; color: var(--route-text); font: 750 .7rem var(--mono); }
  .mobile-cluster-button .mobile-level-name { grid-column: 1 / -1; color: var(--ink-soft); font-size: .68rem; line-height: 1.2; }
  .group-inspector { margin-top: 0; scroll-margin-top: .75rem; }
  .inspector-list-wrap { max-height: 420px; }
  .map-actions { align-items: stretch; flex-direction: column; }
  .map-actions > div, .map-actions .button { width: 100%; }
  .route-cards, .paper-index, .scope-grid { grid-template-columns: 1fr; }
  .paper-label-link { min-height: 64px; }
  .site-footer { flex-direction: column; }
  .site-footer p:last-child { text-align: left; }
  .paper-hero { grid-template-columns: 1fr; padding-top: 5rem; }
  .paper-hero h1 { font-size: clamp(2.8rem, 14vw, 5rem); }
  .paper-section { grid-template-columns: 1fr; gap: .7rem; }
  .paper-section h2 { font-size: clamp(2rem, 10vw, 3.4rem); }
  .mechanism-steps { grid-template-columns: 1fr; }
}

@media (max-width: 390px) {
  .mobile-route-buttons { grid-template-columns: 1fr; }
  .paper-label-link { grid-template-columns: 1fr; }
  .paper-label-facts { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media print {
  body { background: #fff; color: #000; }
  .site-header, .atlas-controls, .map-actions, .paper-section-nav, .skip-link { display: none !important; }
  .hero { min-height: 0; padding: 2rem 0; }
  .section-shell, .paper-main { width: 100%; padding: 2rem 0; }
  .atlas-workbench { display: block; }
  .desktop-map-wrap { display: block; }
  .group-inspector { color: #000; background: #fff; border-color: #000; }
  .group-inspector p, .inspector-link span { color: #333; }
  .inspector-link { color: #000; }
  .paper-index { grid-template-columns: 1fr 1fr; }
  a { color: #000; }
}