:root {
  --ink: #eaf1f7;
  --muted: #8ea2b4;
  --deep: #06131f;
  --panel: #0a1b29;
  --line: rgba(171, 204, 224, .16);
  --paper: #d7e4eb;
  --accent: #ffcc66;
  --cyan: #6dd8dc;
  --rose: #ed8fa7;
  --mono: "DM Mono", monospace;
  --sans: "Manrope", sans-serif;
  --serif: "Newsreader", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--deep); font-family: var(--sans); }
button, input { font: inherit; }
button { color: inherit; }
a { color: var(--cyan); text-underline-offset: 3px; }

body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; opacity: .35; z-index: 10;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.07'/%3E%3C/svg%3E");
}

.masthead { height: 64px; padding: 0 3vw; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { display: flex; gap: 12px; align-items: center; font: 500 12px var(--mono); letter-spacing: .18em; }
.brand-mark { color: var(--accent); font-size: 24px; }
.header-actions { display: flex; gap: 24px; }
.about-button, .dialog-close { border: 0; background: transparent; cursor: pointer; }
.about-button { color: var(--muted); font: 400 11px var(--mono); text-transform: uppercase; letter-spacing: .1em; border-bottom: 1px solid currentColor; padding: 4px 0; }
a.about-button { text-decoration: none; }
a.about-button:hover { color: var(--ink); }

.hero { padding: 72px 5vw 54px; display: grid; grid-template-columns: 1fr 1.7fr; column-gap: 4vw; align-items: end; }
.eyebrow { margin: 0; color: var(--accent); font: 500 10px var(--mono); letter-spacing: .2em; }
h1 { margin: 0; font: 300 clamp(46px, 6vw, 92px)/.92 var(--serif); letter-spacing: -.045em; grid-column: 1 / -1; }
h1 em { color: #91abbc; font-weight: 300; }
.dek { max-width: 600px; margin: 34px 0 0 auto; color: var(--muted); font-size: 15px; line-height: 1.7; grid-column: 2; }
.dek strong { color: var(--ink); }

.workspace { min-height: 760px; display: grid; grid-template-columns: 248px minmax(540px, 1fr) 300px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.controls, .inspector { background: var(--panel); }
.controls { border-right: 1px solid var(--line); overflow: hidden; }
.inspector { border-left: 1px solid var(--line); padding: 26px; }
.search-wrap { display: block; padding: 22px; border-bottom: 1px solid var(--line); position: relative; }
.search-wrap span, .proof-heading { display: block; color: var(--muted); font: 500 9px var(--mono); letter-spacing: .14em; }
.search-wrap input { width: 100%; margin-top: 9px; padding: 8px 25px 8px 0; color: var(--ink); border: 0; border-bottom: 1px solid rgba(255,255,255,.25); outline: none; background: transparent; font-size: 13px; }
.search-wrap input:focus { border-color: var(--accent); }
kbd { position: absolute; right: 22px; bottom: 31px; color: #647b8d; font: 10px var(--mono); }
.mode-switch { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--line); }
.mode-switch button { padding: 13px 5px; border: 0; background: transparent; color: #71889a; font: 10px var(--mono); cursor: pointer; }
.mode-switch button.active { background: rgba(109,216,220,.09); color: var(--cyan); box-shadow: inset 0 -1px var(--cyan); }
.proof-heading { padding: 21px 18px 10px; display: flex; justify-content: space-between; }
.proof-list { height: 578px; overflow: auto; scrollbar-width: thin; scrollbar-color: #284357 transparent; }
.proof-item { width: 100%; display: grid; grid-template-columns: 28px 1fr; gap: 6px; padding: 11px 14px; text-align: left; border: 0; border-top: 1px solid rgba(255,255,255,.045); background: transparent; cursor: pointer; }
.proof-item:hover, .proof-item.active { background: rgba(255,204,102,.07); }
.proof-item.active { box-shadow: inset 2px 0 var(--accent); }
.proof-year { color: #6d8292; font: 9px var(--mono); padding-top: 2px; }
.proof-name { color: #b7c6d0; font: 11px/1.35 var(--sans); }
.proof-item.active .proof-name { color: var(--ink); }

.map-shell { position: relative; min-width: 0; background: #071722; overflow: hidden; }
.map-shell::before { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(114,160,181,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(114,160,181,.035) 1px, transparent 1px); background-size: 32px 32px; }
.map-toolbar { height: 50px; padding: 0 16px; position: absolute; z-index: 2; top: 0; left: 0; right: 0; display: flex; justify-content: space-between; align-items: center; }
.legend { display: flex; gap: 16px; color: #8298a7; font: 9px var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.legend-line { display: inline-block; width: 18px; border-top: 1px solid var(--accent); vertical-align: 3px; margin-right: 5px; }
.legend-arrow { color: var(--accent); font-style: normal; font-size: 14px; }
.zoom-controls { display: flex; background: rgba(6,19,31,.8); border: 1px solid var(--line); }
.zoom-controls button { min-width: 30px; height: 28px; padding: 0 8px; border: 0; border-right: 1px solid var(--line); background: transparent; color: var(--muted); font: 10px var(--mono); cursor: pointer; }
.zoom-controls button:last-child { border: 0; }
#atlas { display: block; width: 100%; height: 760px; cursor: grab; touch-action: none; }
#atlas.dragging { cursor: grabbing; }
.map-hint { position: absolute; bottom: 10px; left: 16px; color: #566f81; font: 9px var(--mono); letter-spacing: .06em; }

.region-shape { fill: rgba(67,121,150,.025); stroke: rgba(124,169,190,.13); stroke-width: 1; stroke-dasharray: 3 7; }
.region-label { fill: #4c6d80; font: 500 13px var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.edge { fill: none; stroke: #86a1b0; stroke-width: 1.2; opacity: .11; marker-end: url(#arrow); transition: opacity .2s, stroke .2s, stroke-width .2s; }
.edge.related { opacity: .82; stroke: var(--accent); stroke-width: 2.2; filter: url(#glow); }
.edge.dim { opacity: .02; }
.node { cursor: pointer; transition: opacity .2s; }
.node circle { fill: #0a2231; stroke: #7292a4; stroke-width: 1.2; transition: fill .2s, stroke .2s, r .2s; }
.node text { fill: #a7bac6; font: 400 11px var(--sans); paint-order: stroke; stroke: #071722; stroke-width: 3px; stroke-linejoin: round; transition: fill .2s; }
.node:hover circle, .node.active circle { fill: #173747; stroke: var(--accent); stroke-width: 2.5; }
.node:hover text, .node.active text { fill: #fff; }
.node.related circle { stroke: var(--cyan); fill: #11323d; }
.node.target circle { stroke: var(--accent); fill: #3b321e; filter: url(#glow); }
.node.dim { opacity: .12; }

.empty-state { margin-top: 130px; }
.empty-glyph { display: block; color: var(--accent); font: 300 54px var(--serif); }
.inspector h2, .method h2, dialog h2 { margin: 12px 0 16px; font: 300 34px/1 var(--serif); }
.inspector p { color: var(--muted); font-size: 12px; line-height: 1.7; }
.inspector .eyebrow { font-size: 9px; }
.detail-year { color: var(--accent); font: 11px var(--mono); }
.route-block { margin: 24px -26px 0; padding: 18px 26px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.route-row { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; }
.route-pill { padding: 5px 7px; border: 1px solid #365469; color: #b9c8d1; font: 9px var(--mono); }
.route-arrow { color: var(--accent); }
.source-link { display: inline-block; margin-top: 20px; font: 500 10px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.confidence { margin-top: 14px; color: #6f8696; font: 9px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.domain-proof-list { margin: 20px 0 0; padding: 0; list-style: none; }
.domain-proof-list li { padding: 10px 0; border-top: 1px solid var(--line); font-size: 11px; color: #b7c7d1; cursor: pointer; }

.method { padding: 72px 5vw; display: grid; grid-template-columns: 1fr 1fr; gap: 4vw; background: #dbe5e9; color: #102431; }
.method .eyebrow { color: #7e5d19; }
.method h2 { font-size: 46px; }
.method-copy { color: #45606f; font-size: 14px; line-height: 1.8; }
.method-copy p:first-child { margin-top: 0; }
.method-copy a { color: #0c6970; }
.method-stats { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 36px; border-top: 1px solid #a9bac2; border-bottom: 1px solid #a9bac2; }
.method-stats div { padding: 25px 0; border-right: 1px solid #a9bac2; }
.method-stats div:last-child { border: 0; }
.method-stats strong { display: block; font: 300 37px var(--serif); }
.method-stats span { color: #627985; font: 9px var(--mono); text-transform: uppercase; letter-spacing: .1em; }

dialog { width: min(560px, calc(100% - 36px)); padding: 46px; color: var(--ink); background: #0b202e; border: 1px solid #315065; box-shadow: 0 20px 80px #000; }
dialog::backdrop { background: rgba(1,8,13,.82); backdrop-filter: blur(4px); }
dialog p:not(.eyebrow) { color: #a8bac5; font-size: 13px; line-height: 1.8; }
.dialog-close { position: absolute; top: 13px; right: 17px; font: 30px var(--serif); color: #8fa5b3; }
.caveat { border-left: 2px solid var(--accent); padding-left: 15px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

@media (max-width: 1100px) {
  .workspace { grid-template-columns: 220px 1fr; }
  .inspector { grid-column: 1 / -1; border-left: 0; border-top: 1px solid var(--line); min-height: 260px; }
  .empty-state { margin: 20px 0; }
}
@media (max-width: 720px) {
  .hero { padding: 50px 24px 35px; display: block; }
  .dek { margin: 25px 0 0; }
  .workspace { display: block; }
  .controls { border-right: 0; }
  .proof-list { height: 240px; }
  .map-shell { height: 620px; }
  #atlas { height: 620px; }
  .legend { display: none; }
  .method { grid-template-columns: 1fr; padding: 55px 24px; }
  .method-stats { grid-column: 1; grid-template-columns: 1fr 1fr; }
  .method-stats div:nth-child(2) { border-right: 0; }
  .method-stats div { border-bottom: 1px solid #a9bac2; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }