/* NumberResearch — v8 "Linear grade"
   Reference: linear.app / stripe.com. Dark, precise, quiet.
   Inter tight tracking, 1px translucent borders, indigo accent,
   radius 8, subtle elevation. Quality lives in the details. */

:root {
  --inter: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --bg: #191d25;
  --bg-2: #1e222b;
  --panel: #242936;
  --panel-2: #2a3040;
  --border: rgba(255, 255, 255, 0.13);
  --border-strong: rgba(255, 255, 255, 0.26);
  --text: #f7f8f8;
  --text-2: #d5dae2;
  --text-3: #aab1bd;
  --text-4: #8f95a1;
  --accent: #5e6ad2;
  --accent-bright: #828fff;
  --accent-glow: rgba(94, 106, 210, 0.35);
  --green: #4cb782;
  --orange: #fc7840;
  --red: #eb5757;

  --max: 1120px;
  --radius: 8px;
}

*, *::before, *::after { box-sizing: border-box; }
html { color-scheme: dark; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--inter); font-size: 16.5px; line-height: 1.6; -webkit-font-smoothing: antialiased; letter-spacing: -0.011em; }
.wrap { width: min(calc(100% - 3rem), var(--max)); margin-inline: auto; }
main.wrap { padding: 40px 0 64px; }
p { margin: 0 0 1.1em; }
a { color: var(--text); text-decoration: none; }
a:hover { color: var(--accent-bright); }
p a, td a, .prose a, .note a, li a { color: var(--accent-bright); }
p a:hover, td a:hover { color: #a3adff; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

h1, h2, h3 { margin: 0; font-weight: 590; color: var(--text); letter-spacing: -0.025em; }
h1 { font-size: clamp(38px, 5.2vw, 62px); line-height: 1.06; }
h2 { font-size: clamp(24px, 3vw, 31px); line-height: 1.2; margin: 56px 0 10px; }
h3 { font-size: 18px; line-height: 1.35; margin: 20px 0 6px; font-weight: 570; }
.mono, .numeric, .npa-link, kbd, code { font-family: var(--mono); font-variant-numeric: tabular-nums; letter-spacing: 0; }
.npa-link { font-weight: 600; color: var(--text); }
.npa-link:hover { color: var(--accent-bright); }
.label { font-size: 13.5px; font-weight: 590; letter-spacing: 0.02em; color: var(--text-3); }
.micro { font-size: 12.5px; color: var(--text-4); }
.note { font-size: 16px; color: var(--text-3); line-height: 1.55; max-width: 72ch; }
.eyebrow, .kicker { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 590; color: var(--accent-bright); margin-bottom: 14px; }
.signal-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-bright); box-shadow: 0 0 12px var(--accent-glow); }

.footnotes { margin-top: 56px; padding-top: 14px; border-top: 1px solid var(--border); color: var(--text-4); font-size: 14.5px; line-height: 1.6; }
.footnotes sup, sup.fn { color: var(--accent-bright); font-weight: 600; }

/* ---------------- header ---------------- */
.site-header { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(20px); background: rgba(25, 29, 37, 0.85); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; width: min(calc(100% - 3rem), var(--max)); margin-inline: auto; height: 56px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 640; font-size: 17px; letter-spacing: -0.02em; color: var(--text); }
.brand-mark { width: 22px; height: 22px; border-radius: 6px; background: linear-gradient(135deg, #6672e0, #3d47a3); display: grid; place-items: center; color: #fff; font-size: 9.5px; font-weight: 700; letter-spacing: 0; }
.main-nav { display: flex; align-items: center; gap: 26px; }
.main-nav a { font-size: 15px; font-weight: 520; color: var(--text-2); }
.main-nav a:hover { color: var(--text); }
.main-nav a.active { color: var(--text); }
.header-meta { font-family: var(--mono); font-size: 11.5px; color: var(--text-4); }
.header-meta b { color: var(--text-3); font-weight: 500; }

/* ---------------- hero ---------------- */
.hero { padding: 64px 0 40px; position: relative; }
.hero::before { content: ""; position: absolute; top: -120px; left: 50%; transform: translateX(-50%); width: 780px; height: 420px; background: radial-gradient(ellipse at center, rgba(110,122,230,0.22), transparent 65%); pointer-events: none; }
.hero > * { position: relative; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(300px, 4fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero h1 { max-width: 15ch; }
.hero-panel { align-self: center; }
.hero-sub { font-size: 19px; line-height: 1.6; color: var(--text-3); max-width: 52ch; margin: 18px 0 30px; }
.hero-sub b { color: var(--text-2); font-weight: 570; }

.lookup { display: flex; align-items: center; max-width: 560px; background: var(--panel); border: 1px solid var(--border-strong); border-radius: 10px; padding: 4px 4px 4px 16px; transition: border-color 120ms; }
.lookup:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(94,106,210,0.18); }
.lookup .prefix { font-family: var(--mono); color: var(--text-4); font-size: 15px; margin-right: 8px; }
.lookup input { flex: 1; min-width: 0; background: transparent; border: 0; color: var(--text); font-family: var(--mono); font-size: 16.5px; text-overflow: ellipsis; padding: 10px 0; }
.lookup input::placeholder { color: var(--text-4); }
.lookup input:focus { outline: none; }
.lookup button { border: 0; border-radius: 7px; background: var(--accent); color: #fff; font-family: var(--inter); font-size: 15px; font-weight: 590; padding: 11px 20px; white-space: nowrap; cursor: pointer; transition: background 120ms; }
.lookup button:hover { background: #6c78e6; }
.try-line { margin-top: 14px; font-size: 14.5px; color: var(--text-4); }
.try-line a { font-family: var(--mono); color: var(--text-3); padding: 2px 7px; border: 1px solid var(--border); border-radius: 6px; margin-right: 4px; }
.try-line a:hover { color: var(--text); border-color: var(--border-strong); }
.hero-meta-line { margin-top: 22px; font-size: 14px; color: var(--text-4); }
.hero-meta-line a { color: var(--text-3); }

/* metric strip */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; margin: 44px 0 0; }
.metric { display: block; background: var(--panel); padding: 18px 20px; text-decoration: none; transition: background 120ms; }
a.metric:hover { background: var(--panel-2); }
a.metric:hover b { color: var(--accent-bright); }
.metric b { display: block; font-family: var(--mono); font-size: 30px; font-weight: 500; letter-spacing: -0.02em; color: var(--text); transition: color 120ms; }
.metric span { font-size: 14px; color: var(--text-3); }

/* ---------------- panels ---------------- */
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 14px 20px; border-bottom: 1px solid var(--border); }
.panel-head .label { color: var(--text-2); }
.panel-head a { font-size: 12.5px; color: var(--text-3); }
.panel-head a:hover { color: var(--accent-bright); }
.panel-body { padding: 6px 20px 14px; }

/* home two-col */
.home-main { display: grid; grid-template-columns: minmax(0, 7fr) minmax(260px, 4fr); gap: 20px; margin-top: 56px; align-items: start; }

/* anatomy */
.anatomy-rows { list-style: none; margin: 0; padding: 0; }
.anatomy-rows li { display: flex; justify-content: space-between; align-items: center; padding: 11px 0; border-bottom: 1px solid var(--border); }
.anatomy-rows li:last-child { border-bottom: 0; }
.anatomy-rows .k { font-size: 13.5px; color: var(--text-3); }
.anatomy-rows .k small { display: block; font-size: 11px; color: var(--text-4); }
.anatomy-rows .v { font-family: var(--mono); font-size: 15px; font-weight: 500; color: var(--text); }
.anatomy-rows .v.hot { color: var(--accent-bright); }
.anatomy-chain { padding: 10px 0 2px; font-family: var(--mono); font-size: 11px; color: var(--text-4); border-top: 1px solid var(--border); margin-top: 2px; }

/* watch list */
.watch-list { list-style: none; margin: 0; padding: 0; }
.watch-list li { display: grid; grid-template-columns: 58px minmax(0, 1fr) auto; gap: 12px; align-items: center; padding: 11px 0; border-bottom: 1px solid var(--border); }
.watch-list li:last-child { border-bottom: 0; }
.watch-list .npa { font-family: var(--mono); font-size: 17px; font-weight: 600; }
.watch-list .npa a { color: var(--text); }
.watch-list .npa a:hover { color: var(--accent-bright); }
.watch-list .region { font-size: 13px; color: var(--text-4); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.watch-list .st { font-size: 12.5px; color: var(--orange); font-weight: 570; white-space: nowrap; }

/* ---------------- tables ---------------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th { font-size: 12.5px; font-weight: 590; letter-spacing: 0.02em; color: var(--text-4); text-align: left; padding: 10px 14px 8px 0; border-bottom: 1px solid var(--border-strong); }
td { padding: 11px 14px 11px 0; border-bottom: 1px solid var(--border); vertical-align: top; color: var(--text-2); }
tr:last-child td { border-bottom: 0; }
tbody tr { transition: background 100ms; }
tbody tr:hover td { background: rgba(255, 255, 255, 0.02); }
td.num, th.num { text-align: right; font-family: var(--mono); }
td .sub { display: block; font-size: 11.5px; color: var(--text-4); margin-top: 2px; }
.evt-title { color: var(--text); font-weight: 520; font-size: 15px; }
.evt-title:hover { color: var(--accent-bright); }
td.mono, .npa-cell { font-family: var(--mono); }
.npa-cell { font-weight: 600; color: var(--text); }

/* badges — Linear-style subtle chips */
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 570; color: var(--text-3); background: rgba(255,255,255,0.05); border: 1px solid var(--border); border-radius: 20px; padding: 2px 9px; letter-spacing: 0; text-transform: capitalize; }
.badge::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--text-4); }
.badge.in_service { color: var(--green); }
.badge.in_service::before { background: var(--green); }
.badge.relief, .badge.planned, .badge.jeopardy { color: var(--orange); }
.badge.relief::before, .badge.planned::before, .badge.jeopardy::before { background: var(--orange); }
.badge.suspended { color: var(--red); }
.badge.suspended::before { background: var(--red); }
.badge.overlay { color: var(--accent-bright); }
.badge.overlay::before { background: var(--accent-bright); }

/* ---------------- data library ---------------- */
.library-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 20px; }
.lib-item { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 20px; transition: border-color 120ms; }
.lib-item:hover { border-color: var(--border-strong); }
.lib-item .no { font-family: var(--mono); font-size: 12.5px; color: var(--text-4); }
.lib-item h3 { margin: 8px 0 4px; font-size: 20px; }
.lib-item p { font-size: 16px; color: var(--text-3); margin: 0 0 12px; }
.lib-item .meta { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-family: var(--mono); font-size: 13.5px; color: var(--text-4); }
.lib-item .meta a { color: var(--accent-bright); }

/* ---------------- provenance ---------------- */
.prov-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 20px; }
.prov-col { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; }
.prov-col h3 { margin: 0 0 6px; font-size: 15.5px; color: var(--accent-bright); font-family: var(--mono); font-weight: 500; }
.prov-col p { font-size: 16px; color: var(--text-3); margin: 0; }
.prov-lerg { margin-top: 16px; font-size: 14px; color: var(--text-4); max-width: 90ch; }

/* ---------------- dossier (area code page) ---------------- */
.dossier-head { display: grid; grid-template-columns: auto minmax(0, 1fr) minmax(230px, auto); gap: clamp(24px, 4vw, 56px); padding: 44px 0 28px; border-bottom: 1px solid var(--border); align-items: start; }
.dossier-npa .big { font-size: clamp(72px, 9vw, 118px); font-weight: 640; letter-spacing: -0.045em; line-height: 0.9; background: linear-gradient(180deg, #fff, #a8b0ff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.dossier-npa .label { display: block; margin-top: 10px; }
.dossier-mid h1 { font-size: clamp(24px, 3vw, 34px); }
.dossier-mid .lead { font-size: 17px; color: var(--text-3); margin-top: 10px; max-width: 46ch; }
.dossier-mid .rel { margin-top: 12px; font-size: 13px; color: var(--text-3); }
.dossier-status { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; display: grid; gap: 11px; }
.dossier-status .row .label { display: block; font-size: 11px; color: var(--text-4); margin-bottom: 2px; }
.dossier-status .row .v { font-family: var(--mono); font-size: 14.5px; color: var(--text); }

.util-strip { padding: 22px 0 6px; border-bottom: 1px solid var(--border); }
.util-strip .top { display: flex; justify-content: space-between; align-items: baseline; }
.util-strip .pct { font-family: var(--mono); font-size: 32px; font-weight: 500; color: var(--text); }
.util-strip .asof { font-family: var(--mono); font-size: 11px; color: var(--text-4); }
.utilization { height: 8px; background: rgba(255,255,255,0.06); border-radius: 6px; margin-top: 10px; overflow: hidden; }
.utilization-fill { display: block; width: var(--value); height: 100%; border-radius: 6px; background: linear-gradient(90deg, var(--accent), var(--accent-bright)); }
.utilization-fill.hot { background: linear-gradient(90deg, #d9542c, var(--orange)); }
.utilization-scale { display: flex; justify-content: space-between; margin-top: 6px; font-family: var(--mono); font-size: 11px; color: var(--text-4); }

.npa-body { display: grid; grid-template-columns: minmax(0, 8fr) minmax(250px, 4fr); gap: 40px; align-items: start; }
.npa-left h2 { margin: 44px 0 2px; }
.sub-label { display: block; font-size: 12px; color: var(--text-4); margin-bottom: 12px; }
.share-line { display: block; height: 3px; background: rgba(255,255,255,0.06); border-radius: 3px; margin-top: 6px; max-width: 320px; }
.share-line i { display: block; height: 100%; border-radius: 3px; background: var(--accent); width: calc(var(--p) * 1%); }

.evidence-rail { position: sticky; top: 76px; }
.evidence-rail > .label { display: block; padding: 44px 0 10px; color: var(--text-2); }
.ev-item { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; margin-bottom: 10px; }
.ev-item .tier { font-family: var(--mono); font-size: 10.5px; color: var(--accent-bright); }
.ev-item .name { font-size: 15px; font-weight: 560; margin: 4px 0; color: var(--text); }
.ev-item .dates { display: grid; gap: 2px; font-family: var(--mono); font-size: 11px; color: var(--text-4); margin-bottom: 8px; }
.ev-item a { font-size: 12px; color: var(--accent-bright); }
.ev-status { padding: 6px 2px; display: grid; gap: 6px; font-family: var(--mono); font-size: 11.5px; color: var(--text-4); }
.ev-status b { color: var(--text-2); font-weight: 500; }

.callout { border: 1px solid rgba(252,120,64,0.3); background: rgba(252,120,64,0.06); border-radius: 10px; padding: 14px 18px; margin: 22px 0; max-width: 72ch; font-size: 13.5px; color: var(--text-2); }
.callout strong { color: var(--text); }
.provenance { font-size: 12px; color: var(--text-4); border-top: 1px solid var(--border); padding-top: 10px; margin-top: 10px; max-width: 86ch; }

/* ledger/timeline */
.timeline { list-style: none; margin: 8px 0 20px; padding: 0; }
.timeline li { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.timeline li:last-child { border-bottom: 0; }
.timeline .date { font-family: var(--mono); font-size: 12px; color: var(--text-4); text-align: right; }

/* filters / pagination / buttons */
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin: 18px 0 8px; }
.filters a { font-size: 12.5px; font-weight: 550; color: var(--text-3); border: 1px solid var(--border); border-radius: 20px; padding: 4px 13px; transition: all 100ms; }
.filters a:hover { color: var(--text); border-color: var(--border-strong); }
.filters a.active { color: #fff; background: var(--accent); border-color: var(--accent); }
.pagination { display: flex; gap: 6px; list-style: none; padding: 0; flex-wrap: wrap; font-size: 13px; }
.pagination li a, .pagination li span { display: block; padding: 4px 11px; border: 1px solid var(--border); border-radius: 7px; color: var(--text-3); }
.pagination li a:hover { color: var(--text); border-color: var(--border-strong); }
.pagination li.active span { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn { display: inline-block; background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: 9px 18px; font-size: 13.5px; font-weight: 590; }
.btn:hover { background: #6c78e6; color: #fff; }
.btn.secondary { background: rgba(255,255,255,0.06); border: 1px solid var(--border); color: var(--text-2); }
.btn.secondary:hover { border-color: var(--border-strong); color: var(--text); background: rgba(255,255,255,0.08); }

/* interior page head */
.page-head { padding: 36px 0 0; }
.page-head h1 { font-size: clamp(28px, 3.6vw, 40px); }
.page-head .stat-line { font-family: var(--mono); font-size: 12px; color: var(--text-4); margin-top: 8px; }
.page-status { display: flex; flex-wrap: wrap; gap: 4px 20px; margin: 16px 0 0; padding: 10px 14px; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; color: var(--text-4); font-family: var(--mono); font-size: 11.5px; }
.page-status b { color: var(--text-2); font-weight: 500; }

/* rank chart */
.rank-chart { display: grid; gap: 10px; margin: 14px 0 24px; }
.rank-row { display: grid; grid-template-columns: minmax(140px, 270px) minmax(100px, 1fr) 58px; gap: 14px; align-items: center; font-size: 13px; color: var(--text-2); }
.rank-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rank-track { display: block; height: 6px; background: rgba(255,255,255,0.06); border-radius: 4px; }
.rank-fill { display: block; width: calc(var(--p) * 1%); height: 100%; border-radius: 4px; background: var(--accent); }
.rank-value { font-family: var(--mono); text-align: right; }

/* prose (policy pages) */
.prose { max-width: 720px; font-size: 16.5px; line-height: 1.7; color: var(--text-2); }
.prose h1 { color: var(--text); margin: 36px 0 8px; font-size: clamp(28px, 3.6vw, 40px); }
.prose h2 { color: var(--text); }
.prose .updated { font-size: 12px; color: var(--text-4); }
.prose table { font-size: 13px; }
.prose blockquote { border-left: 2px solid var(--accent); margin: 16px 0; padding: 2px 0 2px 16px; color: var(--text-3); }

/* def table */
.def-table { margin: 8px 0 16px; }
.def-table div { display: grid; grid-template-columns: minmax(130px, 190px) 1fr; padding: 9px 0; border-bottom: 1px solid var(--border); }
.def-table dt { font-size: 12px; color: var(--text-4); }
.def-table dd { margin: 0; font-size: 13.5px; color: var(--text-2); }

/* ---------------- footer ---------------- */
.site-footer { margin-top: 80px; border-top: 1px solid var(--border); background: var(--bg-2); padding: 40px 0 36px; }
.footer-grid { display: grid; grid-template-columns: minmax(220px, 1.6fr) 1fr 1fr; gap: 40px; width: min(calc(100% - 3rem), var(--max)); margin-inline: auto; }
.footer-brand small { display: block; margin-top: 10px; font-size: 13.5px; color: var(--text-4); line-height: 1.6; max-width: 44ch; }
.footer-grid .label { display: block; margin-bottom: 10px; color: var(--text-3); font-size: 12px; }
.footer-dir { display: grid; gap: 7px; justify-items: start; }
.footer-dir a { font-size: 14.5px; color: var(--text-3); }
.footer-dir a:hover { color: var(--text); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; width: min(calc(100% - 3rem), var(--max)); margin: 30px auto 0; padding-top: 18px; border-top: 1px solid var(--border); font-size: 12px; color: var(--text-4); }

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

/* ---------------- responsive ---------------- */
@media (max-width: 900px) {
  .header-inner { height: auto; flex-wrap: wrap; padding: 10px 0; gap: 10px; }
  .main-nav { gap: 16px; overflow-x: auto; width: 100%; }
  .header-meta { display: none; }
  .hero { padding-top: 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .metrics { grid-template-columns: 1fr 1fr; }
  .home-main { grid-template-columns: 1fr; }
  .library-grid, .prov-cols { grid-template-columns: 1fr; }
  .dossier-head { grid-template-columns: 1fr; gap: 18px; }
  .npa-body { grid-template-columns: 1fr; }
  .evidence-rail { position: static; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .timeline li { grid-template-columns: 80px 1fr; }
}