/* Layout concept: a civic broadside. Huge tight sans headlines, a single maple-red
   stroke used sparingly, cool paper ground, data set in mono like a ledger. */
:root {
  --paper: #f6f7f8;
  --surface: #ffffff;
  --ink: #111418;
  --ink-2: #464d57;
  --ink-3: #6b7380;
  --rule: #dfe2e6;
  --red: #c8102e;
  --red-ink: #a50d26;
  --data: #2f5d8a;
  --data-2: #8fb0d0;
  --data-3: #cfdeec;
  --on-red: #ffffff;

  --f-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --f-body: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --wrap: 1120px;
  --measure: 66ch;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f1216; --surface: #171b21; --ink: #eef1f4; --ink-2: #b9c0c9; --ink-3: #8a93a0;
    --rule: #2a3039; --red: #ef3b4f; --red-ink: #ff6b7a; --data: #6fa0d2; --data-2: #3f6c99; --data-3: #263d55;
    --on-red: #ffffff; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0f1216; --surface: #171b21; --ink: #eef1f4; --ink-2: #b9c0c9; --ink-3: #8a93a0;
  --rule: #2a3039; --red: #ef3b4f; --red-ink: #ff6b7a; --data: #6fa0d2; --data-2: #3f6c99; --data-3: #263d55;
  --on-red: #ffffff; color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.6 var(--f-body);
}
img { max-width: 100%; }
a { color: inherit; text-decoration-color: var(--red); text-underline-offset: 3px; }
a:hover { color: var(--red-ink); }
:focus-visible { outline: 3px solid var(--red); outline-offset: 2px; }
[hidden] { display: none !important; }

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}

/* Header */
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--paper); }
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 14px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 800 17px/1 var(--f-display); letter-spacing: -0.01em; }
.brand-mark { width: 22px; height: 22px; flex: none; }
.nav { display: flex; gap: 22px; flex-wrap: wrap; font-size: 15px; }
.nav a { text-decoration: none; color: var(--ink-2); }
.nav a[aria-current="page"], .nav a:hover { color: var(--ink); text-decoration: underline; text-decoration-color: var(--red); text-decoration-thickness: 2px; }

/* Type */
h1, h2, h3 { font-family: var(--f-display); text-wrap: balance; margin: 0; letter-spacing: -0.025em; }
.display { font-size: clamp(44px, 8.4vw, 104px); line-height: 0.95; font-weight: 800; font-stretch: 112%; }
h2 { font-size: clamp(30px, 4.4vw, 50px); line-height: 1.02; font-weight: 800; }
h3 { font-size: 22px; line-height: 1.2; font-weight: 700; letter-spacing: -0.01em; }
.eyebrow { font: 500 12px/1 var(--f-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }
.lede { font-size: clamp(19px, 2.1vw, 23px); line-height: 1.45; color: var(--ink-2); max-width: 40ch; margin: 0; }
.red { color: var(--red); }
p { margin: 0; }
.prose { max-width: var(--measure); display: grid; gap: 1.1em; }
.prose h2 { font-size: clamp(26px, 3.4vw, 36px); margin-top: 0.8em; }
.prose h3 { margin-top: 0.6em; }
.prose ul { margin: 0; padding-left: 1.2em; display: grid; gap: 0.4em; }

/* Sections */
section { padding-block: clamp(56px, 8vw, 104px); }
.rule-top { border-top: 1px solid var(--rule); }
.section-head { display: grid; gap: 14px; margin-bottom: 40px; max-width: 760px; }

/* Hero */
.hero { padding-block: clamp(56px, 9vw, 120px) clamp(40px, 6vw, 72px); }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1fr); gap: 28px; }
.hero .display .strike { position: relative; white-space: nowrap; }
.hero .display .strike::after {
  content: ""; position: absolute; left: -2%; right: -2%; bottom: 0.08em; height: 0.11em; background: var(--red);
  transform-origin: left; animation: draw 0.9s 0.25s cubic-bezier(.2,.7,.2,1) both;
}
@keyframes draw { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@media (prefers-reduced-motion: reduce) { .hero .display .strike::after { animation: none; } }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 13px 20px; border-radius: 2px;
  font: 600 15px/1 var(--f-body); text-decoration: none; border: 1.5px solid var(--ink); background: transparent; color: var(--ink); cursor: pointer;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn.primary { background: var(--red); border-color: var(--red); color: var(--on-red); }
.btn.primary:hover { background: var(--red-ink); border-color: var(--red-ink); color: var(--on-red); }

/* Number strip */
.figures { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 2px solid var(--ink); }
.figure { padding: 22px 20px 4px 0; display: grid; gap: 8px; align-content: start; }
.figure + .figure { padding-left: 20px; border-left: 1px solid var(--rule); }
.figure .n { font: 800 clamp(34px, 4vw, 48px)/1 var(--f-display); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.figure .l { font-size: 15px; color: var(--ink-2); line-height: 1.4; }
.figure .s { font: 400 11.5px/1.4 var(--f-mono); color: var(--ink-3); }
@media (max-width: 820px) {
  .figures { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .figure:nth-child(3) { padding-left: 0; border-left: 0; }
  .figure:nth-child(n+3) { border-top: 1px solid var(--rule); }
}
@media (max-width: 440px) {
  .figures { grid-template-columns: 1fr; }
  .figure, .figure + .figure { padding-left: 0; border-left: 0; }
  .figure + .figure { border-top: 1px solid var(--rule); }
}

/* Principles */
.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 2px solid var(--ink); }
.principle { padding: 26px 24px 8px 0; display: grid; gap: 12px; align-content: start; }
.principle + .principle { padding-left: 24px; border-left: 1px solid var(--rule); }
.principle .tag { font: 500 12px/1 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--red); }
.principle h3 { font-size: 30px; line-height: 1.05; letter-spacing: -0.02em; font-weight: 800; }
.principle p { color: var(--ink-2); }
@media (max-width: 860px) {
  .principles { grid-template-columns: 1fr; }
  .principle + .principle { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule); }
}

/* Memos */
.memos { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.memo { background: var(--surface); border: 1px solid var(--rule); padding: 28px; display: grid; gap: 16px; align-content: start; }
.memo .meta { display: flex; justify-content: space-between; gap: 12px; }
.memo dl { margin: 0; display: grid; gap: 12px; }
.memo dt { font: 500 11.5px/1 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); }
.memo dd { margin: 4px 0 0; color: var(--ink-2); font-size: 16px; }
@media (max-width: 760px) { .memos { grid-template-columns: 1fr; } }

/* Manifesto band */
.band { background: var(--ink); color: var(--paper); }
.band .eyebrow { color: color-mix(in srgb, var(--paper) 60%, var(--ink)); }
.band blockquote { margin: 0; font: 800 clamp(28px, 4.2vw, 52px)/1.05 var(--f-display); letter-spacing: -0.025em; max-width: 22ch; text-wrap: balance; }
.band blockquote em { font-style: normal; color: var(--red); }
:root[data-theme="dark"] .band, .band { --band-bg: var(--ink); }

/* Scorecard table */
.table-scroll { overflow-x: auto; border-top: 2px solid var(--ink); }
table.score { width: 100%; border-collapse: collapse; min-width: 640px; font-size: 15px; }
table.score th, table.score td { text-align: left; padding: 14px 12px 14px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
table.score th { font: 500 11.5px/1.2 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); }
table.score td.num { font-family: var(--f-mono); font-variant-numeric: tabular-nums; white-space: nowrap; }

/* Join / contact */
.join { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 48px; align-items: start; }
.join form { display: grid; gap: 16px; }
.field { display: grid; gap: 8px; min-width: 0; }
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.join label { font: 500 12px/1 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); }
.join .opt { text-transform: none; letter-spacing: 0; }
.join input, .join select, .join textarea {
  width: 100%; padding: 12px 14px; font: 400 16px/1.4 var(--f-body); color: var(--ink);
  background: var(--surface); border: 1.5px solid var(--ink); border-radius: 2px;
}
.join textarea { resize: vertical; min-height: 128px; }
.join label.check { display: flex; align-items: center; gap: 10px; font: 400 15px/1.4 var(--f-body); letter-spacing: 0; text-transform: none; color: var(--ink-2); cursor: pointer; }
.join label.check input { width: 18px; height: 18px; accent-color: var(--red); }
.join button:disabled { opacity: 0.6; cursor: progress; }
.join .ok { font-size: 15px; color: var(--ink-2); min-height: 1.4em; }
@media (max-width: 860px) { .join { grid-template-columns: 1fr; } }
@media (max-width: 520px) { .field-row { grid-template-columns: 1fr; } }

/* Footer */
.site-footer { border-top: 1px solid var(--rule); padding-block: 36px 48px; font-size: 14px; color: var(--ink-3); }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }

/* Blog index */
.post-list { display: grid; border-top: 2px solid var(--ink); }
.post-item { display: grid; grid-template-columns: 140px minmax(0, 1fr) 160px; gap: 24px; padding-block: 28px; border-bottom: 1px solid var(--rule); text-decoration: none; align-items: start; }
.post-item:hover h3 { text-decoration: underline; text-decoration-color: var(--red); text-decoration-thickness: 2px; }
.post-item:hover { color: inherit; }
.post-item .date { font: 400 13px/1.5 var(--f-mono); color: var(--ink-3); }
.post-item h3 { font-size: clamp(22px, 2.6vw, 30px); line-height: 1.1; font-weight: 800; letter-spacing: -0.02em; }
.post-item p { color: var(--ink-2); margin-top: 10px; max-width: 60ch; }
.post-item .stat { text-align: right; }
.post-item .stat b { display: block; font: 800 30px/1 var(--f-display); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.post-item .stat span { font: 400 11.5px/1.4 var(--f-mono); color: var(--ink-3); }
@media (max-width: 760px) {
  .post-item { grid-template-columns: 1fr; gap: 10px; }
  .post-item .stat { text-align: left; }
}

/* Article */
.article-head { padding-block: clamp(48px, 7vw, 88px) 32px; }
.article-head .wrap { display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; }
.article-head h1 { font-size: clamp(38px, 6vw, 72px); line-height: 0.98; font-weight: 800; max-width: 18ch; }
.byline { font: 400 13px/1.5 var(--f-mono); color: var(--ink-3); display: flex; gap: 16px; flex-wrap: wrap; }
.article-body { padding-block: 16px 72px; }
.article-body .wrap { display: grid; grid-template-columns: minmax(0, 1fr); gap: 40px; }
.callout { border-left: 3px solid var(--red); padding: 4px 0 4px 18px; font: 600 20px/1.4 var(--f-body); max-width: 56ch; }
.method { background: var(--surface); border: 1px solid var(--rule); padding: 22px 24px; max-width: var(--measure); display: grid; gap: 10px; font-size: 15px; color: var(--ink-2); }
.method h3 { font-size: 15px; font-family: var(--f-mono); font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); }
.sources { font-size: 14px; color: var(--ink-3); max-width: var(--measure); }
.sources ol { padding-left: 1.2em; margin: 8px 0 0; display: grid; gap: 6px; }
.next-post { border-top: 2px solid var(--ink); padding-top: 18px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* Charts */
.chart { display: grid; gap: 12px; }
.chart-head { display: grid; gap: 6px; max-width: var(--measure); }
.chart-head h3 { font-size: 20px; }
.chart-head p { color: var(--ink-2); font-size: 15px; }
.chart-body { position: relative; width: 100%; min-width: 0; }
.chart-body svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart-body text { fill: var(--ink-3); font: 400 12px var(--f-mono); }
.chart-body text.val { fill: var(--ink); font-weight: 500; }
.chart-body .grid { stroke: var(--rule); stroke-width: 1; }
.chart-body .axis { stroke: var(--ink-3); stroke-width: 1; }
.chart-body .ref { stroke: var(--red); stroke-width: 1.5; stroke-dasharray: 5 4; }
.chart-body text.ref-label { fill: var(--red-ink); font-weight: 500; paint-order: stroke; stroke: var(--paper); stroke-width: 4px; stroke-linejoin: round; }
.chart-foot { font: 400 12px/1.5 var(--f-mono); color: var(--ink-3); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.legend { display: flex; gap: 16px; flex-wrap: wrap; font-size: 13px; color: var(--ink-2); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 12px; height: 12px; border-radius: 2px; display: inline-block; }
.tip {
  position: absolute; pointer-events: none; z-index: 3; background: var(--ink); color: var(--paper);
  font: 400 12.5px/1.45 var(--f-mono); padding: 8px 10px; border-radius: 3px; white-space: nowrap; transform: translate(-50%, calc(-100% - 10px));
}
.tip b { font-weight: 600; }
.chart details { font-size: 14px; color: var(--ink-2); }
.chart details summary { cursor: pointer; font: 500 12px/1 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); }
.chart details table { border-collapse: collapse; margin-top: 10px; font-size: 14px; }
.chart details td, .chart details th { padding: 6px 18px 6px 0; border-bottom: 1px solid var(--rule); text-align: left; font-variant-numeric: tabular-nums; }

.tiles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 2px solid var(--ink); }
.tiles .figure:nth-child(3n+1) { padding-left: 0; border-left: 0; }
@media (max-width: 720px) {
  .tiles { grid-template-columns: 1fr; }
  .tiles .figure { padding-left: 0 !important; border-left: 0 !important; }
  .tiles .figure + .figure { border-top: 1px solid var(--rule); }
}