/* ---------- Tokens ---------- */
:root {
  color-scheme: light;
  --page: #f7f6f2;
  --surface: #fcfcfb;
  --surface-2: #f0efea;
  --ink: #0f1419;
  --ink-2: #4a4c50;
  --muted: #7d7c77;
  --hair: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --accent: #2a78d6;          /* Denver emphasis (series slot 1) */
  --accent-ink: #1c5cab;
  --peer: #cfcdc4;            /* de-emphasized peers */
  --peer-hover: #b4b2a8;
  --us: #52514e;
  --tier-1: #2a78d6;          /* sequential blue: top third */
  --tier-2: #9ec5f4;          /* middle third */
  --tier-3: #ebe9e2;          /* bottom third */
  --tier-1-ink: #ffffff;
  --tier-2-ink: #0b0b0b;
  --tier-3-ink: #52514e;
  --good: #0ca30c;
  --good-ink: #006300;
  --warn: #fab219;
  --serious: #ec835a;
  --critical: #d03b3b;
  --mountain: #002868;       /* Denver flag blue */
  --flag-red: #bf0a30;
  --flag-gold: #ffd700;
  --radius: 14px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --maxw: 1120px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --surface-2: #222220;
    --ink: #f0efec;
    --ink-2: #c3c2b7;
    --muted: #898781;
    --hair: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --accent: #3987e5;
    --accent-ink: #86b6ef;
    --peer: #3d3d3a;
    --peer-hover: #55554f;
    --us: #c3c2b7;
    --tier-1: #3987e5;
    --tier-2: #184f95;
    --tier-3: #2a2a28;
    --tier-1-ink: #ffffff;
    --tier-2-ink: #ffffff;
    --tier-3-ink: #c3c2b7;
    --good-ink: #0ca30c;
    --mountain: #001a45;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --surface-2: #222220;
  --ink: #f0efec;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --hair: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --accent: #3987e5;
  --accent-ink: #86b6ef;
  --peer: #3d3d3a;
  --peer-hover: #55554f;
  --us: #c3c2b7;
  --tier-1: #3987e5;
  --tier-2: #184f95;
  --tier-3: #2a2a28;
  --tier-1-ink: #ffffff;
  --tier-2-ink: #ffffff;
  --tier-3-ink: #c3c2b7;
  --good-ink: #0ca30c;
  --mountain: #001a45;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--accent-ink); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
h1, h2, h3, h4 { line-height: 1.15; letter-spacing: -0.015em; margin: 0; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }
.eyebrow {
  font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 10px;
}
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--page) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--hair);
}
.nav .wrap { display: flex; align-items: center; gap: 12px; height: 60px; position: relative; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; white-space: nowrap; font-size: 16px; font-weight: 650; letter-spacing: -0.01em; margin-right: auto; }
.brand-mark { width: 24px; height: 24px; border-radius: 6px; flex: none; }
.brand b { color: var(--accent-ink); font-weight: 750; }
.nav-links { display: flex; gap: 2px; }
.nav-links a {
  position: relative; color: var(--ink-2); text-decoration: none; font-size: 14px; font-weight: 500;
  padding: 8px 10px; border-radius: 8px; white-space: nowrap;
}
.nav-links a:hover { color: var(--ink); background: var(--surface-2); }
.nav-links a.active { color: var(--ink); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 10px; right: 10px; bottom: -11px; height: 3px; border-radius: 3px 3px 0 0; background: var(--mountain);
}
:root[data-theme="dark"] .nav-links a.active::after { background: var(--flag-gold); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .nav-links a.active::after { background: var(--flag-gold); } }
.nav-links a:focus-visible, .menu-btn:focus-visible, .theme-btn:focus-visible, .brand:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.menu-btn {
  display: none; align-items: center; gap: 8px; height: 36px; padding: 0 12px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--ink); border-radius: 8px; font: 600 14px var(--font);
}
@media (max-width: 1060px) {
  .menu-btn { display: inline-flex; }
  .nav-links {
    display: none; position: absolute; top: calc(100% + 1px); left: 0; right: 0;
    grid-template-columns: 1fr 1fr; gap: 4px; padding: 12px 16px 16px;
    background: var(--surface); border-bottom: 1px solid var(--hair); box-shadow: 0 12px 24px rgba(0,0,0,0.10);
  }
  .nav-links.open { display: grid; }
  .nav-links a { font-size: 16px; padding: 12px 14px; background: var(--surface-2); }
  .nav-links a.active { background: var(--mountain); color: #fff; }
  .nav-links a.active::after { display: none; }
}
@media (max-width: 380px) { .brand { font-size: 15px; } .menu-btn span { display: none; } }
.theme-btn {
  border: 1px solid var(--border); background: var(--surface); color: var(--ink-2);
  border-radius: 8px; width: 36px; height: 36px; cursor: pointer; flex: none; display: grid; place-items: center;
}
.theme-btn:hover { color: var(--ink); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: var(--mountain); color: #f4f3ef;
}
.hero .wrap { position: relative; z-index: 1; padding-top: 72px; padding-bottom: 230px; }
.hero .eyebrow { color: #9ec5f4; }
.hero h1 { font-size: clamp(38px, 7vw, 72px); font-weight: 750; max-width: 14ch; }
.hero .lede { font-size: clamp(18px, 2.2vw, 21px); max-width: 60ch; color: #d7dbe2; margin-top: 22px; }
.hero .meta { font-size: 14px; color: #a9b2c0; margin-top: 18px; }
.hero svg.flag-edge { position: absolute; left: 0; right: 0; bottom: -1px; width: 100%; height: 220px; z-index: 0; }
.flag-sun {
  position: absolute; z-index: 0; border-radius: 50%; background: var(--flag-gold);
  width: 200px; height: 200px; right: max(16px, calc((100% - var(--maxw)) / 2 + 32px)); top: 88px;
}
@media (max-width: 900px) { .flag-sun { width: 96px; height: 96px; top: 72px; right: 16px; opacity: 0.9; } .hero h1 { max-width: 11ch; } }
@media (max-width: 520px) {
  .flag-sun { width: 56px; height: 56px; top: 28px; }
  .hero .wrap { padding-top: 104px; padding-bottom: 170px; }
  .hero svg.flag-edge { height: 120px; }
}
.hero-stats {
  position: relative; z-index: 2; margin-top: -120px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px;
}
.stat {
  position: relative; overflow: hidden;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px 20px 16px; box-shadow: 0 8px 24px rgba(0, 20, 60, 0.10);
  display: flex; flex-direction: column;
}
.stat::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 4px; background: var(--mountain); }
.stat .value {
  font-size: clamp(36px, 3.4vw, 44px); font-weight: 800; letter-spacing: -0.035em; line-height: 1;
  color: var(--mountain); white-space: nowrap;
}
:root[data-theme="dark"] .stat .value { color: var(--flag-gold); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .stat .value { color: var(--flag-gold); } }
.stat .value .unit { font-size: 0.42em; font-weight: 700; letter-spacing: 0; }
.stat .label { font-size: 16px; font-weight: 700; color: var(--ink); margin-top: 10px; line-height: 1.25; }
.stat .ctx { font-size: 14px; color: var(--ink-2); margin-top: 4px; line-height: 1.35; }
.stat .src { font-size: 12px; color: var(--muted); margin-top: auto; padding-top: 12px; text-decoration: none; }
.stat .src:hover { text-decoration: underline; }

/* ---------- Sections ---------- */
section.block { padding: 88px 0 24px; }
section.block > .wrap > header { max-width: 760px; margin-bottom: 36px; }
section.block h2 { font-size: clamp(30px, 4.4vw, 44px); font-weight: 720; }
section.block .intro { font-size: 18px; color: var(--ink-2); margin-top: 14px; }
.cat-icon { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 10px; background: var(--surface-2); margin-bottom: 14px; color: var(--accent-ink); }

/* ---------- Thesis / Scorecard ---------- */
.thesis-grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 900px) { .thesis-grid { grid-template-columns: 1fr 1fr; } }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; min-width: 0;
}
.card h3 { font-size: 18px; font-weight: 650; }
.card .sub { font-size: 14px; color: var(--muted); margin-top: 4px; }
.card .body { margin-top: 18px; }

.breadth-row { display: grid; grid-template-columns: 112px 1fr 64px; align-items: center; gap: 10px; height: 30px; }
.breadth-row .name { font-size: 14px; color: var(--ink-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.breadth-row.is-denver .name { color: var(--ink); font-weight: 650; }
.breadth-track { display: flex; height: 18px; gap: 2px; }
.breadth-track span { display: block; height: 100%; }
.breadth-track span:first-child { border-radius: 0; }
.breadth-track span:last-child { border-radius: 0 4px 4px 0; }
.breadth-row .n { font-size: 13px; color: var(--ink-2); font-variant-numeric: tabular-nums; text-align: right; }
.legend { display: flex; flex-wrap: wrap; gap: 14px; font-size: 13px; color: var(--ink-2); margin-top: 14px; }
.legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; vertical-align: -1px; margin-right: 6px; }

.matrix-wrap {
  margin-top: 4px; overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--surface);
}
table.matrix { border-collapse: separate; border-spacing: 2px; font-size: 13px; min-width: 860px; width: 100%; padding: 8px; }
table.matrix th, table.matrix td { text-align: center; padding: 0; }
table.matrix thead th {
  font-weight: 600; color: var(--ink-2); font-size: 12px; height: 92px; vertical-align: bottom; white-space: nowrap;
}
table.matrix thead th .rot { display: inline-block; transform: rotate(-50deg); transform-origin: left bottom; translate: 12px -4px; width: 20px; text-align: left; }
table.matrix thead th.is-denver { color: var(--accent-ink); }
table.matrix tbody th {
  text-align: left; font-weight: 500; color: var(--ink-2); padding: 0 10px 0 4px; white-space: nowrap;
  position: sticky; left: 0; background: var(--surface); z-index: 1; max-width: 260px; overflow: hidden; text-overflow: ellipsis;
}
table.matrix tbody tr.cat-row th { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; padding-top: 10px; }
table.matrix td.cell {
  height: 28px; min-width: 36px; border-radius: 4px; font-variant-numeric: tabular-nums; font-weight: 600; cursor: default;
}
table.matrix td.cell.t1 { background: var(--tier-1); color: var(--tier-1-ink); }
table.matrix td.cell.t2 { background: var(--tier-2); color: var(--tier-2-ink); }
table.matrix td.cell.t3 { background: var(--tier-3); color: var(--tier-3-ink); }
table.matrix td.cell.na { background: transparent; color: var(--muted); font-weight: 400; }
table.matrix td.cell.is-denver { outline: 2px solid var(--ink); outline-offset: -2px; }
table.matrix td.cell:hover, table.matrix td.cell:focus-visible { filter: brightness(1.08); outline: 2px solid var(--ink); outline-offset: -2px; }

/* ---------- Category charts ---------- */
.chart-grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 900px) { .chart-grid { grid-template-columns: 1fr 1fr; } }
.chart-card .verdict {
  display: inline-block; font-size: 12px; font-weight: 650; padding: 3px 9px; border-radius: 999px; margin-top: 10px;
  background: var(--surface-2); color: var(--ink-2);
}
.chart-card .verdict.top { background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent-ink); }
.bars { margin-top: 14px; position: relative; }
.bar-row {
  display: grid; grid-template-columns: 108px 1fr; align-items: center; gap: 10px; height: 24px;
  border-radius: 6px; position: relative;
}
.bar-row .name { font-size: 13px; color: var(--ink-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; text-align: right; }
.bar-row.is-denver .name { color: var(--ink); font-weight: 700; }
.bar-row.is-us .name { color: var(--muted); font-style: italic; }
.bar-plot { position: relative; height: 100%; }
.bar-area { position: relative; width: calc(100% - 100px); height: 100%; }
.bars.has-neg .bar-area { margin-left: 44px; width: calc(100% - 144px); }
.bar-area .zero { position: absolute; top: 2px; bottom: 2px; width: 1px; background: var(--axis); }
.bar {
  position: absolute; top: 50%; translate: 0 -50%;
  height: 14px; border-radius: 0 4px 4px 0; background: var(--peer); transition: background 120ms;
}
.bar.neg { border-radius: 4px 0 0 4px; }
.bar-row.is-denver .bar { background: var(--accent); }
.bar-row.is-us .bar { background: transparent; box-shadow: inset 0 0 0 1.5px var(--us); height: 12px; }
.bar-row .val { position: absolute; top: 50%; translate: 0 -50%; font-size: 12px; color: var(--ink-2); white-space: nowrap; font-variant-numeric: tabular-nums; }
.bar-row.is-denver .val { color: var(--ink); font-weight: 700; }
.bar-row:hover .bar, .bar-row:focus-visible .bar { background: var(--peer-hover); }
.bar-row.is-denver:hover .bar { background: var(--accent-ink); }
.bar-row:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.chart-foot { font-size: 12px; color: var(--muted); margin-top: 14px; line-height: 1.45; }
.chart-foot a { color: var(--muted); }
.chart-note { font-size: 13px; color: var(--ink-2); margin-top: 10px; line-height: 1.45; }

.facts { display: grid; gap: 12px; margin-top: 16px; grid-template-columns: 1fr; }
@media (min-width: 720px) { .facts { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .facts { grid-template-columns: repeat(3, 1fr); } }
.fact { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.fact .big { font-size: 28px; font-weight: 680; letter-spacing: -0.02em; color: var(--ink); line-height: 1.1; }
.fact .txt { font-size: 15px; color: var(--ink-2); margin-top: 6px; line-height: 1.45; }
.fact .src { font-size: 12px; color: var(--muted); margin-top: 10px; }
.fact .src a { color: var(--muted); }
.sub-h { font-size: 13px; font-weight: 650; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); margin: 40px 0 0; }

/* ---------- Tradeoffs ---------- */
#tradeoffs { background: var(--surface-2); padding-bottom: 72px; margin-top: 64px; }
.trade { display: grid; grid-template-columns: 28px 1fr; gap: 12px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.trade .sev { width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; font-weight: 800; font-size: 13px; color: #0b0b0b; }
.trade .sev { font-family: Georgia, serif; font-style: italic; }
.trade .sev.high { background: var(--mountain); color: #fff; }
.trade .sev.medium { background: color-mix(in srgb, var(--mountain) 55%, var(--surface)); color: #fff; }
.trade .sev.low { background: var(--surface-2); color: var(--ink-2); box-shadow: inset 0 0 0 1px var(--border); }
.trade h4 { font-size: 16px; font-weight: 650; }
.trade .sevlabel { font-size: 12px; color: var(--muted); font-weight: 500; margin-left: 6px; }
.trade p { font-size: 15px; color: var(--ink-2); margin: 6px 0 0; line-height: 1.5; }
.trade .src { font-size: 12px; color: var(--muted); margin-top: 8px; }
.trade .src a { color: var(--muted); }
.trade-list { display: grid; gap: 12px; grid-template-columns: 1fr; }
@media (min-width: 900px) { .trade-list { grid-template-columns: 1fr 1fr; } }

/* ---------- Method & sources ---------- */
.method { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 900px) { .method { grid-template-columns: 1fr 1fr; } }
.method ul { padding-left: 18px; margin: 0; color: var(--ink-2); font-size: 15px; }
.method li { margin-bottom: 8px; }
ol.sources { columns: 1; padding-left: 22px; font-size: 13px; color: var(--ink-2); }
@media (min-width: 900px) { ol.sources { columns: 2; column-gap: 40px; } }
ol.sources li { break-inside: avoid; margin-bottom: 8px; overflow-wrap: anywhere; }
footer.site { padding: 48px 0 64px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--hair); margin-top: 64px; }

/* ---------- Tooltip ---------- */
.tip {
  position: fixed; z-index: 50; pointer-events: none; opacity: 0; transition: opacity 80ms;
  background: var(--surface); color: var(--ink); border: 1px solid var(--border); border-radius: 10px;
  padding: 8px 10px; font-size: 13px; box-shadow: 0 6px 24px rgba(0,0,0,0.14); max-width: 280px;
}
.tip.on { opacity: 1; }
.tip strong { display: block; font-size: 15px; }
.tip .t2 { color: var(--ink-2); }
.tip .t3 { color: var(--muted); font-size: 12px; margin-top: 2px; }

@media print {
  .nav, .theme-btn { display: none; }
  .hero { background: none; color: var(--ink); }
}

/* ---------- At a glance ---------- */
.glance { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 900px) { .glance { grid-template-columns: 1.15fr 1fr; } }
.glance .card h3 { display: flex; align-items: baseline; gap: 10px; }
.glance .count { font-size: 40px; font-weight: 700; letter-spacing: -0.02em; line-height: 1; }
.glance .card.lead .count { color: var(--accent-ink); }
.glance ul { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 6px; align-content: start; }
@media (min-width: 560px) { .glance .card.lead ul { grid-template-columns: 1fr 1fr; column-gap: 18px; } }
.glance li { display: grid; grid-template-columns: 34px 1fr; align-items: baseline; font-size: 15px; color: var(--ink-2); }
.glance li b { font-variant-numeric: tabular-nums; color: var(--ink); font-size: 14px; }
.glance .rank-pill { display: inline-block; min-width: 28px; text-align: center; border-radius: 6px; padding: 1px 0; font-size: 13px; font-weight: 700; }
.glance .card.lead .rank-pill { background: var(--tier-1); color: var(--tier-1-ink); }
.glance .card.lag .rank-pill { background: var(--tier-3); color: var(--tier-3-ink); box-shadow: inset 0 0 0 1px var(--border); }
.glance .middle { font-size: 15px; color: var(--ink-2); margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--hair); }
.glance details summary { cursor: pointer; color: var(--accent-ink); font-size: 14px; margin-top: 6px; }
.glance .card.lag > a { font-size: 14px; display: inline-block; margin-top: 14px; }
.matrix-details { margin-top: 16px; }
.matrix-details > summary {
  cursor: pointer; font-weight: 600; font-size: 15px; color: var(--accent-ink); padding: 12px 0; list-style-position: inside;
}

/* ---------- Closer ---------- */
.closer { background: var(--mountain); color: #f4f3ef; padding: 88px 0; position: relative; overflow: hidden; border-top: 10px solid var(--flag-red); }
.closer::after { content: ""; position: absolute; width: 260px; height: 260px; border-radius: 50%; background: var(--flag-gold); right: -60px; top: -60px; opacity: 0.95; }
.closer .wrap { position: relative; z-index: 1; }
.closer h2 { font-size: clamp(34px, 5vw, 56px); font-weight: 750; letter-spacing: -0.02em; }
.closer p { font-size: clamp(18px, 2.2vw, 22px); line-height: 1.5; color: #d7dbe2; max-width: 62ch; margin-top: 20px; }
.closer p:last-of-type { color: #fff; font-weight: 600; }
.closer-cta { display: inline-block; margin-top: 24px; color: #9ec5f4; font-weight: 600; }

/* Phones: the flag's peaks sit near the edges, so don't let the stat tiles cover the zigzag. */
@media (max-width: 520px) { .hero-stats { margin-top: 16px; } }

@media (max-width: 520px) {
  .closer { padding-top: 120px; }
  .closer::after { width: 120px; height: 120px; right: -30px; top: -30px; }
  table.matrix { font-size: 12px; }
  table.matrix tbody th { max-width: 132px; padding-right: 6px; }
  table.matrix td.cell { min-width: 30px; height: 26px; }
}