/* What Works? News Center */
:root {
  color-scheme: light;
  --bg: #f7f5f0;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --ink-3: #7a7974;
  --rule: #dddbd4;
  --grid: #e6e4de;
  --accent: #c2410c;
  --series-1: #2a78d6;
  --series-1-wash: rgba(42, 120, 214, .10);
  --series-2: #eb6834;   /* dataviz categorical slot 2 (Then & Now "Now"); slots 1-2 validated together */
  --series-2-wash: rgba(235, 104, 52, .10);
  --series-3: #1baf7a;   /* slots 3 and 7: the tornado lens's weak/strong, validated as a pair */
  --series-7: #4a3aa7;
  --era-wash: rgba(11, 11, 11, .045);   /* shaded era bands behind charts */
  --tile-filter: grayscale(1) contrast(.85) brightness(1.06) opacity(.7);
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Source Sans 3", system-ui, -apple-system, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #121211; --surface: #1a1a19; --ink: #ffffff; --ink-2: #c3c2b7; --ink-3: #8f8e86;
    --rule: #33332f; --grid: #2a2a27; --accent: #f97316;
    --series-1: #3987e5; --series-1-wash: rgba(57, 135, 229, .14);
    --series-2: #d95926; --series-2-wash: rgba(217, 89, 38, .14); --era-wash: rgba(255, 255, 255, .06);
    --series-3: #199e70; --series-7: #9085e9;
    --tile-filter: grayscale(1) invert(1) brightness(.62) contrast(1.1);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121211; --surface: #1a1a19; --ink: #ffffff; --ink-2: #c3c2b7; --ink-3: #8f8e86;
  --rule: #33332f; --grid: #2a2a27; --accent: #f97316;
  --series-1: #3987e5; --series-1-wash: rgba(57, 135, 229, .14);
  --series-2: #d95926; --series-2-wash: rgba(217, 89, 38, .14); --era-wash: rgba(255, 255, 255, .06);
  --series-3: #199e70; --series-7: #9085e9;
  --tile-filter: grayscale(1) invert(1) brightness(.62) contrast(1.1);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.55 var(--sans); }
a { color: inherit; }
img, iframe { max-width: 100%; }
code { font-size: .9em; background: var(--surface); padding: .1em .35em; border-radius: 4px; border: 1px solid var(--rule); }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 16px; }

/* Masthead */
.masthead { border-bottom: 3px double var(--ink); background: var(--bg); }
.masthead-top { display: flex; justify-content: space-between; align-items: center; gap: 12px;
  font-size: 13px; color: var(--ink-2); padding-top: 10px; padding-bottom: 6px; border-bottom: 1px solid var(--rule); }
.channel-links { display: flex; gap: 14px; align-items: center; }
.channel-links a { text-decoration: none; font-weight: 600; }
.channel-links a:hover { color: var(--accent); }
.theme-toggle { background: none; border: 1px solid var(--rule); color: var(--ink-2); border-radius: 999px;
  width: 28px; height: 28px; cursor: pointer; font-size: 14px; }
.wordmark { display: block; text-align: center; font: 900 clamp(44px, 9vw, 96px)/1 var(--serif);
  letter-spacing: -.02em; text-decoration: none; margin: 18px 0 4px; font-variation-settings: "opsz" 144; }
.wordmark span { color: var(--accent); }
.wordmark.small { font-size: 28px; margin: 0; text-align: left; }
.tagline { text-align: center; font-style: italic; color: var(--ink-2); margin: 0 0 14px; font-family: var(--serif); }
.sections { border-top: 1px solid var(--ink); }
.sections .wrap { display: flex; gap: 4px 22px; justify-content: center; flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px; }
.sections a { text-decoration: none; font-weight: 700; font-size: 14px; letter-spacing: .06em; text-transform: uppercase; padding: 4px 0; }
.sections a:hover, .sections a[aria-current] { color: var(--accent); box-shadow: inset 0 -2px var(--accent); }

main.wrap { padding-top: 28px; padding-bottom: 48px; }

/* Cards & front page */
.front { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 36px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 24px 28px; margin-top: 28px; }
.grid.wide { margin-top: 0; }
.card { border-top: 1px solid var(--rule); padding-top: 12px; }
.card h3 { font: 700 22px/1.2 var(--serif); margin: 4px 0 6px; }
.card h3 a, .story h1 { text-decoration: none; }
.card h3 a:hover { color: var(--accent); }
.card.lead { border-top: 0; padding-top: 0; }
.card.lead h3 { font-size: clamp(30px, 4.2vw, 46px); line-height: 1.08; letter-spacing: -.01em; }
.card.lead .dek { font-size: 20px; }
.kicker { display: inline-block; color: var(--accent); font-weight: 700; font-size: 12px; letter-spacing: .1em;
  text-transform: uppercase; text-decoration: none; }
.dek { color: var(--ink-2); margin: 0 0 8px; }
.meta { color: var(--ink-3); font-size: 14px; margin: 0; }
.badge { font-size: 12px; font-weight: 700; color: var(--accent); }
.video { position: relative; aspect-ratio: 16 / 9; margin: 0 0 16px; background: #000; border-radius: 6px; overflow: hidden; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.rail { display: flex; flex-direction: column; gap: 24px; }
.box { background: var(--surface); border: 1px solid var(--rule); border-radius: 8px; padding: 16px 18px; }
.box-title { font: 700 13px/1.3 var(--sans); letter-spacing: .1em; text-transform: uppercase; margin: 0 0 4px;
  padding-bottom: 6px; border-bottom: 2px solid var(--ink); }
.box-sub { color: var(--ink-3); font-size: 14px; margin: 6px 0 10px; }
.more { display: inline-block; margin-top: 10px; font-weight: 700; color: var(--accent); text-decoration: none; }
.watch-item { display: block; padding: 8px 0; border-bottom: 1px solid var(--rule); text-decoration: none; font-weight: 600; }
.watch-links { margin: 10px 0 0; font-size: 14px; }
.section-list { list-style: none; padding: 0; margin: 8px 0 0; }
.section-list li { padding: 6px 0; border-bottom: 1px solid var(--rule); }
.section-list a { font-weight: 700; text-decoration: none; display: block; }
.section-list span { color: var(--ink-3); font-size: 14px; }

/* Event lists */
.event-list { list-style: none; padding: 0; margin: 0; }
.event-row { padding: 10px 0; border-bottom: 1px solid var(--rule); }
.event-row a { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 0 8px; text-decoration: none; align-items: baseline; }
.event-row a:hover .ev-type { color: var(--accent); }
.ev-type { font-weight: 700; }
.ev-where { color: var(--ink-2); }
.ev-year { color: var(--ink-3); font-variant-numeric: tabular-nums; }
.ev-toll { display: block; font-size: 14px; color: var(--ink-2); }
.ev-excerpt { font-size: 14px; color: var(--ink-3); margin: 4px 0 0; }

/* Page heads & stories */
.page-head { border-bottom: 1px solid var(--rule); margin-bottom: 24px; padding-bottom: 12px; }
.page-head h1 { font: 900 clamp(36px, 6vw, 56px)/1.05 var(--serif); margin: 0 0 6px; }
.story { max-width: 720px; margin: 0 auto; }
.story h1 { font: 800 clamp(32px, 5vw, 50px)/1.08 var(--serif); margin: 6px 0 10px; letter-spacing: -.01em; }
.story .dek { font-size: 21px; font-family: var(--serif); }
.story header { margin-bottom: 22px; }
.prose { font-size: 19px; line-height: 1.65; }
.prose h2 { font: 700 26px/1.2 var(--serif); margin: 1.6em 0 .4em; }
.prose a { color: var(--accent); }
.prose blockquote { margin: 1.2em 0; padding-left: 16px; border-left: 3px solid var(--accent); color: var(--ink-2); font-style: italic; }
.prose table, .chart-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.prose th, .prose td, .chart-table th, .chart-table td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--rule); }
.chart-table td.num, .chart-table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.tags span { display: inline-block; margin-right: 10px; color: var(--ink-3); font-size: 14px; }
.related { max-width: 1180px; margin: 48px auto 0; }
.empty { color: var(--ink-3); font-style: italic; }

/* Storm Desk */
.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 0 0 28px; }
.stat { background: var(--surface); border: 1px solid var(--rule); border-radius: 8px; padding: 14px 16px; }
.stat-num { display: block; font: 800 30px/1.1 var(--serif); font-variant-numeric: tabular-nums; }
.stat-label { color: var(--ink-3); font-size: 14px; }
.desk-stories { margin-bottom: 36px; }
.filters { display: flex; flex-wrap: wrap; gap: 12px; margin: 14px 0 8px; }
.filters label, .results-head label { display: flex; flex-direction: column; font-size: 12px; font-weight: 700;
  letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2); gap: 4px; }
.filters label:first-child { flex: 1 1 240px; }
.filters input, .filters select, .results-head select {
  font: 16px var(--sans); color: var(--ink); background: var(--surface); border: 1px solid var(--rule);
  border-radius: 6px; padding: 7px 9px; min-width: 0; }
.filters input[type=number] { width: 96px; }
.caveat { font-size: 14px; color: var(--ink-3); margin: 0 0 18px; }
.chart-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.span-2 { grid-column: span 2; }
.results { margin-top: 28px; }
.results-head { display: flex; justify-content: space-between; align-items: end; gap: 12px; border-bottom: 2px solid var(--ink); padding-bottom: 8px; }
.results-head h3 { margin: 0; font: 700 22px var(--serif); }
.more-btn { margin-top: 14px; font: 700 15px var(--sans); background: var(--surface); color: var(--ink);
  border: 1px solid var(--rule); border-radius: 6px; padding: 8px 16px; cursor: pointer; }
.more-btn:hover { border-color: var(--accent); color: var(--accent); }

/* Charts (rendered by charts.js) */
.chart-panel, .storm-chart { position: relative; margin: 0; background: var(--surface); border: 1px solid var(--rule);
  border-radius: 8px; padding: 14px 16px 10px; min-width: 0; }
.storm-chart { margin: 1.4em 0; }
.chart-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.chart-title { font: 700 16px/1.3 var(--sans); margin: 0; }
.chart-sub { font-size: 13px; color: var(--ink-3); margin: 2px 0 6px; }
.chart-toggle { background: none; border: 0; color: var(--ink-2); font: 600 12px var(--sans); cursor: pointer; text-decoration: underline; white-space: nowrap; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart text { font: 12px var(--sans); fill: var(--ink-2); }
.chart .grid-line { stroke: var(--grid); stroke-width: 1; }
.chart .axis-line { stroke: var(--rule); stroke-width: 1; }
.chart .mark { fill: var(--series-1); }
.chart .mark.dim { opacity: .35; }
.chart .line { fill: none; stroke: var(--series-1); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart .area { fill: var(--series-1-wash); }
.chart .cursor { stroke: var(--ink-3); stroke-width: 1; }
.chart .dot { fill: var(--series-1); stroke: var(--surface); stroke-width: 2; }
.chart .val { fill: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
.chart-tip { position: absolute; pointer-events: none; background: var(--ink); color: var(--bg); font-size: 13px;
  padding: 6px 9px; border-radius: 6px; white-space: nowrap; transform: translate(-50%, calc(-100% - 10px)); z-index: 2; }
.chart-tip b { font-variant-numeric: tabular-nums; }
.chart-loading { color: var(--ink-3); font-size: 14px; padding: 30px 0; text-align: center; }

/* Map */
.map-panel .chart-head { align-items: center; }
.map { height: 480px; border-radius: 6px; overflow: hidden; background: var(--bg); z-index: 0; }
.map.mini { height: 300px; margin: 8px 0; }
.seg { display: inline-flex; border: 1px solid var(--rule); border-radius: 999px; padding: 2px; background: var(--bg); }
.seg button { font: 600 13px var(--sans); color: var(--ink-2); background: none; border: 0; border-radius: 999px;
  padding: 5px 12px; cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--bg); }
.map-legend { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; margin-top: 10px; font-size: 13px; color: var(--ink-2); }
.map-legend:empty { display: none; }
.key-title { font-weight: 700; color: var(--ink); }
.key-item { display: inline-flex; align-items: center; gap: 6px; font-variant-numeric: tabular-nums; }
.key-item i { width: 14px; height: 14px; border-radius: 3px; display: inline-block; }
.map-tools { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; margin: 0 0 10px; }
.near-me { display: inline-flex; align-items: center; gap: 6px; font: 700 14px var(--sans); color: var(--bg);
  background: var(--accent); border: 0; border-radius: 999px; padding: 7px 14px; cursor: pointer; }
.near-me:hover { filter: brightness(1.1); }
.near-me:disabled { opacity: .6; cursor: progress; }
.area-toggle { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--ink-2); cursor: pointer; }
.area-toggle input { accent-color: var(--accent); width: 16px; height: 16px; }
.map-status { font-size: 13px; color: var(--ink-2); }
.map-status:empty { display: none; }
.seg button:disabled { opacity: .4; cursor: not-allowed; }
.map-note { font-size: 13px; color: var(--ink-3); margin: 8px 0 0; }
.map-note.warn { color: var(--ink); }
.map-note.warn::before { content: "⚠ "; color: var(--accent); }
.leaflet-container { font: 13px var(--sans); background: var(--bg); }
.leaflet-tile-pane { filter: var(--tile-filter); }
.leaflet-tooltip { background: var(--ink); color: var(--bg); border: 0; border-radius: 6px; box-shadow: none; padding: 6px 9px; font-size: 13px; }
.leaflet-tooltip-top::before { border-top-color: var(--ink); }
.leaflet-tooltip-left::before { border-left-color: var(--ink); }
.leaflet-tooltip-right::before { border-right-color: var(--ink); }
.leaflet-tooltip .muted { opacity: .7; }
.leaflet-bar a { background: var(--surface); color: var(--ink); border-color: var(--rule); }
.leaflet-bar a:hover { background: var(--bg); }
.leaflet-control-attribution { background: color-mix(in srgb, var(--surface) 80%, transparent) !important; color: var(--ink-3); }
.leaflet-control-attribution a { color: var(--ink-2); }
@media (max-width: 520px) { .map { height: 380px; } .map-panel .chart-head { flex-wrap: wrap; } }

/* Citations and drafts */
.prose sup { line-height: 0; }
.prose .footnote-ref { text-decoration: none; font-weight: 700; font-size: .8em; padding: 0 .1em; }
.sources { margin-top: 2.4em; padding-top: 1em; border-top: 1px solid var(--rule); font-size: 15px; line-height: 1.55; color: var(--ink-2); }
.sources h2 { font: 700 13px/1.3 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--ink); margin: 0 0 .6em; }
.sources ol { padding-left: 1.4em; margin: 0; }
.sources li { margin: .4em 0; overflow-wrap: anywhere; }
.sources li:target { background: color-mix(in srgb, var(--accent) 12%, transparent); border-radius: 4px; }
.sources p { margin: 0; }
.sources .footnote-backref { text-decoration: none; margin-left: .25em; }
.draft-banner { background: color-mix(in srgb, var(--accent) 12%, var(--surface)); border: 1px dashed var(--accent);
  border-radius: 8px; padding: 10px 14px; font-size: 15px; margin: 0 0 20px; }
.badge.draft { border: 1px solid var(--accent); border-radius: 4px; padding: 0 5px; }

/* Tools */
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.tool-card { background: var(--surface); border: 1px solid var(--rule); border-radius: 10px; padding: 18px 20px; display: flex; flex-direction: column; }
.tool-card h3 { font: 800 26px/1.15 var(--serif); margin: 6px 0 6px; }
.tool-card h3 a { text-decoration: none; }
.tool-card h3 a:hover { color: var(--accent); }
.tool-card .dek { margin-bottom: 10px; }
.tool-status { display: inline-block; margin: 0; font: 700 11px/1 var(--sans); letter-spacing: .1em; text-transform: uppercase;
  padding: 4px 7px; border-radius: 4px; border: 1px solid var(--rule); color: var(--ink-2); }
.tool-status.status-live { border-color: var(--accent); color: var(--accent); }
.tool-card .tool-status { align-self: flex-start; }
.tool-audience { font-size: 14px; color: var(--ink-2); margin: 0 0 12px; }
.tool-audience span { font-weight: 700; color: var(--ink); }
.tool-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; margin: auto 0 0; font-size: 14px; }
.tool-actions a { color: var(--ink-2); font-weight: 600; }
.tool-actions .tool-open { color: var(--bg); background: var(--accent); text-decoration: none; padding: 7px 14px; border-radius: 999px; font-weight: 700; }
.tool-actions .tool-open:hover { filter: brightness(1.1); }
.tool-actions.big { margin: 0 0 24px; font-size: 16px; }
.built-with { margin: 10px 0 0; font-size: 14px; color: var(--ink-2); }
.built-with a { color: var(--accent); font-weight: 600; }

.footer { border-top: 3px double var(--ink); padding: 24px 0 40px; color: var(--ink-3); font-size: 14px; }
.footer p { margin: 6px 0; }

@media (max-width: 900px) {
  .front { grid-template-columns: 1fr; }
  .chart-grid { grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
}
@media (max-width: 520px) {
  body { font-size: 16px; }
  .prose { font-size: 17px; }
  .masthead-top .dateline { display: none; }
  .masthead-top { justify-content: flex-end; }
  .filters input[type=number] { width: 80px; }
}

/* Explorer list scope note and 404 page */
.list-scope { font-size: 14px; color: var(--ink-2); margin: 10px 0 0; }
.list-scope:empty { display: none; }
.not-found { padding: 24px 0 12px; }
.not-found .section-list { font-size: 17px; }

/* Then & Now (/storms/then-and-now/, app/templates/thenandnow.html + then-now.js; [[then-now]] figures in posts) */
.tn-callout { display: block; text-decoration: none; background: var(--surface); border: 1px solid var(--rule);
  border-left: 4px solid var(--accent); border-radius: 8px; padding: 14px 18px; margin: 0 0 24px; }
.tn-callout:hover { border-color: var(--accent); }
.tn-callout-kicker { display: block; color: var(--accent); font: 700 12px/1.3 var(--sans); letter-spacing: .1em; text-transform: uppercase; }
.tn-callout-title { display: block; font: 700 clamp(20px, 3vw, 26px)/1.2 var(--serif); margin: 4px 0; }
.tn-callout-text { display: block; color: var(--ink-2); font-size: 15px; }
.tn-head .dek { font: 21px/1.45 var(--serif); max-width: 46em; }
.tn-head .dek a { color: var(--accent); font: 600 16px var(--sans); }
.tn-intro { max-width: 46em; color: var(--ink-2); margin: 0 0 8px; }
.tn-controls { align-items: flex-end; }
.tn-controls label:first-child { flex: initial; }
.tn-era { display: block; margin: 0; padding: 0; border: 0; min-width: 0; }
.tn-era legend { padding: 0; margin: 0 0 4px; font: 700 12px/1.3 var(--sans); letter-spacing: .06em;
  text-transform: uppercase; color: var(--ink); }
.tn-era label { display: inline-flex; margin-right: 6px; }
.tn-era label:last-child { margin-right: 0; }
.tn-era legend::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 50%;
  margin-right: 6px; vertical-align: -1px; background: var(--series-1); }
.tn-era:nth-child(2) legend::before { background: var(--series-2); }
.tn-era input[type=number] { width: 84px; }
.tn-dollars[hidden] { display: none; }
.tn-status { font-size: 15px; color: var(--ink-2); margin: 8px 0 0; }
.tn-status:empty { display: none; }
.tn-status.error, .tn-status[data-kind="error"] { color: var(--accent); font-weight: 600; }
.tn-summary { font: 19px/1.55 var(--serif); max-width: 46em; margin: 16px 0 8px; }
.tn-summary:empty { display: none; }
.tn-section { margin: 32px 0 0; }
.tn-section > .box-title { margin-bottom: 14px; }
.tn-tornado { max-width: 46em; margin: 0 0 14px; }
.tn-tornado-chart:empty { display: none; }
.tn-caveats { max-width: 46em; }
.tn-caveats li, .tn-unmatched li { margin: .35em 0; }
.tn-sources { max-width: 46em; margin-top: 40px; }
.tn-cite { line-height: 0; }
.tn-cite a { color: var(--accent); text-decoration: none; font-weight: 700; padding: 0 1px; }
.tn-sources a { color: var(--accent); }
.then-now { position: relative; margin: 1.4em 0; background: var(--surface); border: 1px solid var(--rule);
  border-radius: 8px; padding: 14px 16px 10px; min-width: 0; }
.then-now:empty::before { content: "Loading the Then & Now comparison…"; display: block; color: var(--ink-3); font-size: 14px; padding: 24px 0; text-align: center; }
/* Multi-series charts (charts.js line({series, bands}) and the dumbbell): s1 = Then, s2 = Now;
 * s3/s7 = the tornado lens's weak/strong, so blue and orange keep meaning Then and Now. */
.chart .line.s1 { stroke: var(--series-1); }
.chart .line.s2 { stroke: var(--series-2); }
.chart .line.s3 { stroke: var(--series-3); }
.chart .line.s7 { stroke: var(--series-7); }
.chart .dot.s1 { fill: var(--series-1); }
.chart .dot.s2 { fill: var(--series-2); }
.chart .dot.s3 { fill: var(--series-3); }
.chart .dot.s7 { fill: var(--series-7); }
.chart .band { fill: var(--era-wash); }
.chart .band-label { font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; fill: var(--ink-3); }
.chart .pair-link { stroke: var(--ink-3); stroke-width: 2; stroke-linecap: round; }
.chart .pair.dim { opacity: .35; }
.chart .pair:focus { outline: none; }
.chart .pair:focus-visible .pair-link { stroke: var(--ink); }
.chart-legend { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 16px; padding: 0; margin: 2px 0 8px; font-size: 13px; color: var(--ink-2); }
.chart-legend li { display: inline-flex; align-items: center; gap: 6px; }
.key, .tip-key { display: inline-block; flex: none; width: 10px; height: 10px; border-radius: 50%; background: var(--series-1); }
.key-line { width: 16px; height: 3px; border-radius: 2px; }
.tip-key { margin-right: 6px; vertical-align: middle; }
.key.s1, .tip-key.s1 { background: var(--series-1); }
.key.s2, .tip-key.s2 { background: var(--series-2); }
.key.s3, .tip-key.s3 { background: var(--series-3); }
.key.s7, .tip-key.s7 { background: var(--series-7); }
.tn-busy, .tn-stale { opacity: .55; transition: opacity .15s; }
.tn-era input[aria-invalid="true"] { border-color: var(--accent); }
.tn-lede { font: 19px/1.55 var(--serif); margin: 0 0 10px; }
.tn-note { color: var(--ink-2); margin: 0 0 10px; }
.tn-unmatched-list { columns: 2 280px; column-gap: 32px; padding-left: 1.2em; margin: 0; font-size: 15px; }
.tn-unmatched-list li { break-inside: avoid; }
.tn-type { font-weight: 600; }
.tn-when { color: var(--ink-3); }
.tn-when::before { content: " · "; }
.tn-unmatched { max-width: none; }
.then-now .tn-compact-chart { border: 0; padding: 0; background: none; }
.tn-compact-text { font-size: 16px; line-height: 1.5; color: var(--ink-2); margin-top: 8px; }
.tn-compact-text p { margin: 0 0 6px; }
.tn-compact-text .more { color: var(--accent); }
.tn-compact-text .tn-compact-notes { font-size: 14px; color: var(--ink-2); }
.tn-compact-notes a { color: var(--ink-2); }
@media (max-width: 520px) {
  .tn-controls { gap: 10px; }
  .tn-era input[type=number] { width: 76px; }
  .tn-controls > label { flex: 1 1 140px; }
  .tn-summary { font-size: 17px; }
}

/* Papers (/papers/ and /papers/<slug>/: app/templates/papers.html, paper.html, paper.js) */
.paper-list { display: grid; gap: 0; max-width: 820px; }
.paper-card { border-top: 1px solid var(--rule); padding: 16px 0 18px; }
.paper-card:first-child { border-top: 0; padding-top: 0; }
.related .paper-card:first-child { padding-top: 12px; }
.paper-card h3 { font: 700 clamp(22px, 2.6vw, 27px)/1.2 var(--serif); margin: 4px 0 6px; }
.paper-card h3 a { text-decoration: none; }
.paper-card h3 a:hover { color: var(--accent); }
.paper-abstract-short { color: var(--ink-2); margin: 0 0 8px; display: -webkit-box; -webkit-box-orient: vertical;
  -webkit-line-clamp: 3; line-clamp: 3; overflow: hidden; }
.kicker-sep { color: var(--ink-3); font-size: 12px; margin: 0 2px; }
.paper-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; margin: 0 0 24px; font-size: 15px; }
.paper-actions a:not(.paper-download) { color: var(--ink-2); font-weight: 600; }
.paper-download { display: inline-flex; align-items: center; gap: 8px; color: var(--bg); background: var(--accent);
  text-decoration: none; padding: 8px 16px; border-radius: 999px; font-weight: 700; }
.paper-download::before { content: ""; width: 12px; height: 12px; flex: none; background: currentColor;
  clip-path: polygon(35% 0, 65% 0, 65% 45%, 90% 45%, 50% 85%, 10% 45%, 35% 45%); }
.paper-download:hover { filter: brightness(1.1); }
.paper-facts { color: var(--ink-3); font-variant-numeric: tabular-nums; }
.paper-abstract { background: var(--surface); border: 1px solid var(--rule); border-radius: 8px; padding: 14px 18px 4px; margin: 0 0 24px; }
.paper-abstract h2 { font: 700 13px/1.3 var(--sans); letter-spacing: .1em; text-transform: uppercase; margin: 0 0 6px; }
.paper-abstract p { font: 18px/1.6 var(--serif); margin: 0 0 12px; }
.paper .prose { margin-bottom: 8px; }
.paper-viewer { max-width: 1000px; margin: 28px auto 0; }
.paper-embed { display: block; width: 100%; height: min(88vh, 1200px); border: 1px solid var(--rule); border-radius: 8px;
  background: var(--surface); }
.paper-open { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; background: var(--surface);
  border: 1px solid var(--rule); border-radius: 8px; padding: 18px 20px; }
.paper-open p { flex: 1 0 100%; margin: 0; font: 18px/1.4 var(--serif); }
.paper-embed .paper-open { height: 100%; align-content: center; justify-content: center; text-align: center; border: 0; }
.paper-open-alt { display: none; }
.paper-viewer.no-viewer .paper-embed { display: none; }
.paper-viewer.no-viewer .paper-open-alt { display: flex; }
.paper-cite { margin-top: 40px; }
.cite-plain { font-size: 16px; color: var(--ink-2); overflow-wrap: anywhere; margin: 10px 0 14px; }
.bibtex { background: var(--surface); border: 1px solid var(--rule); border-radius: 8px; overflow: hidden; }
.bibtex-head { display: flex; align-items: center; gap: 12px; padding: 8px 12px; border-bottom: 1px solid var(--rule);
  font: 700 12px/1.3 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); }
.bibtex-head > span:first-child { flex: 1; }
.copy-btn { font: 700 13px var(--sans); color: var(--ink); background: var(--bg); border: 1px solid var(--rule);
  border-radius: 999px; padding: 5px 12px; cursor: pointer; letter-spacing: 0; text-transform: none; }
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }
.copy-status { font-weight: 600; letter-spacing: 0; text-transform: none; color: var(--accent); }
.copy-status:empty { display: none; }
.bibtex pre { margin: 0; padding: 12px 14px; font: 13px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--ink); overflow-x: auto; white-space: pre; }
.paper-error { border: 1px solid var(--accent); border-left-width: 4px; border-radius: 8px; padding: 12px 16px; margin: 0 0 20px;
  background: color-mix(in srgb, var(--accent) 8%, var(--surface)); font-size: 15px; }
.paper-error p { margin: 0 0 8px; }
.paper-error pre { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; font: 13px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; }
@media (max-width: 640px) {
  .paper-embed { display: none; }
  .paper-open-alt { display: flex; }
  .paper-actions { gap: 10px 14px; }
}