:root {
  color-scheme: light dark;
  --font-heading: "Plus Jakarta Sans", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --background: #f8fafc;
  --foreground: #0f172a;
  --primary: #006b70;
  --primary-soft: #e6f4f4;
  --primary-muted: #cce9e9;
  --secondary: #4f46e5;
  --surface: #ffffff;
  --border: rgba(15, 23, 42, 0.11);
  --muted: #526277;
  --soft-muted: #7c8ba1;
  --warning: #92400e;
  --warning-soft: #fbf0dd;
  --success: #166534;
  --success-soft: #e6f6ec;
  --danger: #991b1b;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 10px 28px rgba(15, 23, 42, 0.07);
  --utility-surface: rgba(255, 255, 255, 0.74);
  --header-surface: rgba(255, 255, 255, 0.84);
}

[data-theme="dark"] {
  color-scheme: dark;
  --background: #0d0e15;
  --foreground: #ffffff;
  --primary: #00e5ff;
  --primary-soft: #17233d;
  --primary-muted: #1d3158;
  --secondary: #b9a7ff;
  --surface: #151722;
  --border: rgba(255, 255, 255, 0.1);
  --muted: #aeb7c6;
  --soft-muted: #8894a8;
  --warning: #f4c27d;
  --warning-soft: #3d2c16;
  --success: #7ee0a3;
  --success-soft: #143522;
  --danger: #f5a3a3;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.28), 0 10px 30px rgba(0, 0, 0, 0.35);
  --utility-surface: rgba(13, 14, 21, 0.82);
  --header-surface: rgba(21, 23, 34, 0.86);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --background: #0d0e15;
    --foreground: #ffffff;
    --primary: #00e5ff;
    --primary-soft: #17233d;
    --primary-muted: #1d3158;
    --secondary: #b9a7ff;
    --surface: #151722;
    --border: rgba(255, 255, 255, 0.1);
    --muted: #aeb7c6;
    --soft-muted: #8894a8;
    --warning: #f4c27d;
    --warning-soft: #3d2c16;
    --success: #7ee0a3;
    --success-soft: #143522;
    --danger: #f5a3a3;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.28), 0 10px 30px rgba(0, 0, 0, 0.35);
    --utility-surface: rgba(13, 14, 21, 0.82);
    --header-surface: rgba(21, 23, 34, 0.86);
  }
}

* { box-sizing: border-box; }
html { min-width: 320px; scroll-behavior: smooth; background: var(--background); }
body { min-width: 320px; margin: 0; background: var(--background); color: var(--foreground); font: 400 15px/1.55 var(--font-body); letter-spacing: 0.01em; }
button, input { font: inherit; }
button { color: inherit; }
a { color: inherit; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3, strong { font-family: var(--font-heading); }
h1 { max-width: 14ch; margin-bottom: 12px; font-size: clamp(2.25rem, 4.5vw, 3.25rem); line-height: 1.1; letter-spacing: -0.045em; }
h2 { margin-bottom: 10px; font-size: clamp(1.55rem, 2.7vw, 2.25rem); line-height: 1.2; letter-spacing: -0.035em; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; }

.skip-link { position: fixed; z-index: 100; top: 10px; left: 10px; padding: 10px 14px; background: var(--primary); color: var(--background); transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }

.utility-strip { border-bottom: 1px solid var(--border); background: var(--utility-surface); color: var(--muted); font: 400 10px/1.2 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; }
.utility-inner, .site-header, main, footer > div { width: min(1152px, calc(100% - 64px)); margin: 0 auto; }
.utility-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 36px; }
.utility-controls { display: flex; align-items: center; gap: 14px; }
.theme-switch { display: inline-flex; gap: 2px; padding: 2px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); }
.theme-switch button { border: 0; border-radius: 999px; padding: 4px 9px; background: transparent; color: var(--muted); font: 500 10px/1 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; cursor: pointer; }
.theme-switch button[aria-checked="true"] { background: var(--primary-soft); color: var(--primary); }

.site-header { position: sticky; z-index: 20; top: 0; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; min-height: 68px; border-bottom: 1px solid var(--border); background: var(--header-surface); backdrop-filter: blur(14px); }
.brand { display: inline-flex; align-items: center; justify-self: start; gap: 11px; color: var(--foreground); text-decoration: none; }
.brand-mark { width: 4px; height: 34px; border-radius: 3px; background: linear-gradient(var(--primary), var(--secondary)); box-shadow: 0 0 18px color-mix(in srgb, var(--primary) 48%, transparent); }
.brand strong { display: block; font: 700 16px/1 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; }
.brand small { display: block; margin-top: 4px; color: var(--muted); font: 400 9px/1 var(--font-mono); letter-spacing: 0.17em; text-transform: uppercase; }
.brand-pulse { display: inline-block; width: 6px; height: 13px; margin-left: 4px; background: var(--primary); vertical-align: -2px; }
.site-header nav { display: flex; gap: 4px; }
.site-header nav a { border: 1px solid transparent; border-radius: 999px; padding: 8px 14px; color: var(--muted); text-decoration: none; transition: background 180ms ease, border-color 180ms ease, color 180ms ease; }
.site-header nav a:hover { border-color: var(--primary); color: var(--primary); }
.site-header nav a[aria-current="page"] { border-color: var(--primary); background: var(--primary-soft); color: var(--primary); }
.header-context { justify-self: end; color: var(--muted); font: 500 10px/1 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; }

main { min-height: calc(100vh - 150px); padding: 40px 0 96px; }
.page { display: flex; flex-direction: column; gap: 72px; }
.page-overview { gap: 16px; }
.sample-caveat { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 2px; border: 1px solid var(--border); border-left: 3px solid var(--warning); border-radius: 12px; padding: 16px 18px; background: var(--warning-soft); color: var(--warning); }
.sample-caveat strong, .card-label, .section-index { flex: none; margin: 2px 0 0; font: 700 10px/1.4 var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase; }
.sample-caveat p { margin: 0; font-size: 13px; line-height: 1.55; }
.page-intro { max-width: 700px; }
.overview-intro { display: flex; align-items: flex-end; justify-content: space-between; max-width: none; gap: 32px; margin-top: 12px; }
.page-intro > p:not(.section-index) { max-width: 680px; margin-bottom: 0; color: var(--muted); font-size: 16px; }
.section-index { margin: 0 0 12px; color: var(--primary); }
.measurement-count { flex: none; margin: 0 0 8px; color: var(--muted); font: 400 10px/1.65 var(--font-mono); letter-spacing: 0.08em; text-align: right; text-transform: uppercase; }

.answer-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.answer-card, .chart-card, .audience-card, .detail-stat-grid article, .detail-note, .insight-grid article { border: 1px solid var(--border); border-radius: 16px; background: var(--surface); box-shadow: var(--shadow); }
.answer-card { display: flex; min-width: 0; min-height: 286px; flex-direction: column; padding: 22px; }
.answer-card h2 { margin-top: 2px; font-size: 18px; }
.answer-card > p:last-child { margin: auto 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.card-label { color: var(--muted); }
.number-line { display: flex; align-items: baseline; gap: 8px; margin: 12px 0 6px; }
.number-line strong { font-size: 40px; line-height: 1; letter-spacing: -0.045em; }
.delta { border-radius: 6px; padding: 5px 7px; background: var(--success-soft); color: var(--success); font: 700 12px/1 var(--font-mono); }
.muted { color: var(--muted); font: 500 14px/1 var(--font-mono); }
.sparkline { width: 100%; height: 48px; margin: 2px 0 5px; overflow: visible; }
.sparkline polyline { fill: none; stroke: var(--primary); stroke-width: 2.5; stroke-linejoin: round; }
.split-metrics { display: flex; gap: 18px; margin: 8px 0; }
.split-metrics span { display: flex; flex-direction: column; color: var(--muted); font-size: 11px; }
.split-metrics strong { color: var(--foreground); font: 700 20px/1 var(--font-mono); }
.status-dot { color: var(--primary); font: 500 9px/1 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; }
.status-dot::before { display: inline-block; width: 6px; height: 6px; margin-right: 5px; border-radius: 999px; background: currentColor; content: ""; vertical-align: 1px; }
.status-dot.is-checkpoint, .status-dot.is-pending { color: var(--warning); }
.status-dot.is-pending { color: var(--danger); }
.mini-bars { display: flex; flex-direction: column; gap: 8px; margin: 4px 0 10px; }
.mini-bars > div { display: grid; grid-template-columns: 82px 1fr 28px; align-items: center; gap: 7px; font-size: 10px; }
.mini-bars span { overflow: hidden; color: var(--muted); text-overflow: ellipsis; white-space: nowrap; }
.mini-bars i, .comparison-scale i, .format-bar i, .network-list i, .detail-bars i { display: block; height: 7px; overflow: hidden; border-radius: 999px; background: var(--primary-soft); }
.mini-bars b, .comparison-scale i b, .format-bar i b, .network-list i b, .detail-bars i b { display: block; width: var(--bar-width); height: 100%; border-radius: inherit; background: var(--primary); }
.mini-bars em { font: 500 10px/1 var(--font-mono); font-style: normal; text-align: right; }
.audience-mini { display: flex; flex-direction: column; gap: 5px; margin: 8px 0; color: var(--muted); font-size: 12px; }
.audience-mini div { display: flex; justify-content: space-between; gap: 10px; }
.audience-mini dt, .audience-mini dd { margin: 0; }
.audience-mini dd { color: var(--foreground); font-family: var(--font-mono); }

.derived-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 56px; }
.derived-grid > div { display: flex; align-items: baseline; gap: 12px; border: 1px solid var(--border); border-radius: 12px; padding: 17px 20px; background: var(--surface); }
.derived-grid strong { color: var(--primary); font: 700 20px/1 var(--font-mono); }
.derived-grid span { color: var(--muted); font-size: 12px; }

.section-block { margin-top: 0; }
.section-copy { max-width: 670px; margin: 0 0 24px; color: var(--muted); }
.chart-card { padding: 28px; }
.chart-key { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 24px; color: var(--muted); font-size: 12px; }
.chart-key span { display: inline-flex; align-items: center; gap: 7px; }
.chart-key i { width: 11px; height: 11px; border-radius: 3px; background: var(--primary); }
.chart-key .key-reach, .chart-key .key-engagement { background: var(--secondary); }
.chart-key .key-unknown { background: var(--primary-muted); }
.momentum-columns { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); min-height: 264px; gap: 16px; align-items: end; }
.momentum-week { display: grid; grid-template-rows: 205px auto; min-width: 0; }
.bar-pair { display: flex; height: 205px; align-items: end; justify-content: center; gap: 5px; }
.metric-column { display: flex; width: min(36px, 48%); height: 100%; flex-direction: column; justify-content: end; gap: 6px; }
.metric-column b { color: var(--foreground); font: 700 11px/1 var(--font-mono); text-align: center; }
.metric-column i { display: block; height: var(--bar-height); min-height: 2px; border-radius: 5px 5px 0 0; background: var(--primary); }
.metric-column .reach-bar { background: var(--secondary); }
.metric-column .reach-bar.is-partial { background: repeating-linear-gradient(135deg, var(--primary-muted) 0 4px, transparent 4px 8px); }
.week-caption { min-height: 42px; border-top: 1px solid var(--border); padding-top: 8px; }
.week-caption strong, .week-caption span { display: block; overflow: hidden; font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
.week-caption strong { font: 500 9px/1.35 var(--font-mono); color: var(--foreground); }
.week-caption span { color: var(--muted); }

.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.comparison-controls { display: flex; flex-direction: column; align-items: end; gap: 8px; }
.segmented-control { display: inline-flex; overflow: hidden; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); }
.segmented-control button, .outline-button { min-height: 38px; border: 0; padding: 8px 14px; background: transparent; color: var(--muted); font-size: 12px; font-weight: 500; cursor: pointer; }
.segmented-control button[aria-pressed="true"] { background: var(--primary); color: var(--background); }
.outline-button { border: 1px solid var(--border); border-radius: 999px; color: var(--foreground); }
.outline-button:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }
.outline-button:disabled { opacity: 0.5; cursor: not-allowed; }
.comparison-table { overflow: hidden; border: 1px solid var(--border); border-radius: 16px; background: var(--surface); box-shadow: var(--shadow); }
.comparison-head, .comparison-row { display: grid; grid-template-columns: minmax(210px, 2.3fr) 92px minmax(160px, 1.5fr) 68px 52px; gap: 16px; align-items: center; }
.comparison-head { padding: 13px 22px; border-bottom: 1px solid var(--border); color: var(--muted); font: 500 10px/1 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; }
.comparison-head span:nth-last-child(-n+2) { text-align: right; }
.comparison-row { min-height: 75px; padding: 14px 22px; border-bottom: 1px solid var(--border); }
.comparison-row:last-child { border-bottom: 0; }
.comparison-row.is-unknown { opacity: 0.58; }
.comparison-row > div:first-child { min-width: 0; }
.comparison-row a { display: block; overflow: hidden; color: var(--foreground); font-family: var(--font-heading); font-weight: 600; line-height: 1.3; text-decoration: none; text-overflow: ellipsis; white-space: nowrap; }
.comparison-row a:hover, .network-list a:hover { color: var(--primary); text-decoration: underline; }
.comparison-row > div:first-child span { display: block; overflow: hidden; margin-top: 3px; color: var(--muted); font: 400 10px/1.3 var(--font-mono); text-overflow: ellipsis; white-space: nowrap; }
.comparison-row time { color: var(--muted); font: 400 11px/1 var(--font-mono); }
.comparison-scale i { height: 9px; }
.comparison-scale i b { background: var(--primary-muted); }
.comparison-scale i b.is-leader { background: var(--primary); }
.comparison-scale small { display: block; margin-top: 3px; color: var(--primary); font: 500 9px/1 var(--font-mono); text-transform: uppercase; }
.comparison-row > strong, .comparison-share { font: 700 15px/1 var(--font-mono); text-align: right; }
.comparison-share { color: var(--muted); font-weight: 400; font-size: 11px; }
.centered-button { display: block; margin: 18px auto 0; }
.chart-note { margin: 14px 0 0; color: var(--muted); font-size: 12px; }

.line-chart-card { padding-bottom: 20px; }
.chart-title { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
.chart-title h2 { font-size: 20px; }
.chart-title span { color: var(--muted); font: 400 10px/1.3 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; }
.line-chart-card svg { width: 100%; height: auto; margin: 8px 0 0; overflow: visible; }
.chart-grid line { stroke: var(--border); stroke-width: 1; }
.chart-area { fill: color-mix(in srgb, var(--primary) 18%, transparent); }
.chart-line { fill: none; stroke: var(--primary); stroke-linejoin: round; stroke-width: 3; }
.chart-engagement { stroke: var(--secondary); stroke-dasharray: 6 5; }
.chart-axis { display: grid; grid-template-columns: repeat(6, 1fr); margin-top: -5px; color: var(--muted); font: 400 9px/1.35 var(--font-mono); text-align: center; }
.insight-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: -56px; }
.insight-grid article { padding: 22px; }
.insight-grid h2 { margin: 8px 0; font-size: 19px; }
.insight-grid p:last-child { margin-bottom: 0; color: var(--muted); font-size: 13px; }
.cadence-grid { overflow-x: auto; }
.cadence-head, .cadence-row { display: grid; grid-template-columns: 76px repeat(7, minmax(48px, 1fr)); gap: 6px; min-width: 520px; }
.cadence-head { align-items: center; color: var(--muted); font: 500 9px/1 var(--font-mono); letter-spacing: 0.08em; text-align: center; text-transform: uppercase; }
.cadence-row { margin-top: 6px; align-items: center; }
.cadence-row > strong { color: var(--muted); font: 400 9px/1.3 var(--font-mono); }
.cadence-cell { display: grid; min-height: 38px; place-items: center; border: 1px solid var(--border); border-radius: 6px; background: var(--primary-muted); color: var(--foreground); font: 500 10px/1 var(--font-mono); }
.cadence-cell.is-empty { background: transparent; color: transparent; }
.cadence-cell.strength-1 { background: var(--primary-muted); }
.cadence-cell.strength-2 { background: color-mix(in srgb, var(--primary) 50%, var(--primary-muted)); }
.cadence-cell.strength-3, .cadence-cell.strength-4 { background: var(--primary); color: var(--background); }
.format-list { display: flex; flex-direction: column; gap: 17px; }
.format-list article { display: grid; grid-template-columns: minmax(150px, 0.7fr) minmax(200px, 1fr) minmax(160px, 0.65fr); align-items: center; gap: 18px; }
.format-list article > div:first-child strong, .format-list article > div:first-child span { display: block; }
.format-list article > div:first-child strong { font: 600 14px/1.3 var(--font-heading); }
.format-list article > div:first-child span, .format-list article p { color: var(--muted); font-size: 11px; }
.format-list article p { margin: 0; line-height: 1.4; }
.format-bar { display: grid; grid-template-columns: 1fr 50px; align-items: center; gap: 10px; }
.format-bar i { height: 12px; }
.format-bar strong { font: 700 13px/1 var(--font-mono); text-align: right; }

.audience-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.audience-card { padding: 26px; }
.audience-strip { display: flex; height: 12px; overflow: hidden; margin: 18px 0; border-radius: 999px; background: var(--primary-soft); }
.audience-strip i { width: var(--segment-width); }
.segment-1 { background: var(--primary); }
.segment-2 { background: var(--secondary); }
.segment-rest { background: var(--primary-muted); }
.audience-card dl { display: flex; flex-direction: column; gap: 10px; margin: 0; }
.audience-card dl div { display: flex; justify-content: space-between; gap: 10px; }
.audience-card dt, .audience-card dd { margin: 0; }
.audience-card dt { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.audience-card dt i { width: 9px; height: 9px; border-radius: 2px; }
.audience-card dd { font: 700 14px/1 var(--font-mono); }
.audience-card .not-reported { color: var(--muted); }
.audience-card .not-reported i { border: 1px solid var(--border); background: var(--primary-soft); }
.audience-card > p:last-child { margin: 18px 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.network-list { display: flex; flex-direction: column; gap: 14px; }
.network-list article { display: grid; grid-template-columns: minmax(190px, 260px) 1fr 50px; align-items: center; gap: 16px; }
.network-list a { overflow: hidden; font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }
.network-list i { height: 10px; }
.network-list strong { color: var(--primary); font: 700 13px/1 var(--font-mono); text-align: right; }
.funnel-list { display: flex; flex-direction: column; gap: 5px; }
.funnel-list article { display: grid; grid-template-columns: 180px 1fr; align-items: center; gap: 24px; padding: 13px 0; border-bottom: 1px solid var(--border); }
.funnel-list article > div:first-child strong, .funnel-list article > div:first-child span { display: block; }
.funnel-list article > div:first-child strong { font-size: 14px; }
.funnel-list article > div:first-child span { color: var(--muted); font-size: 11px; }
.funnel-bar { display: flex; align-items: center; gap: 12px; }
.funnel-bar i { display: flex; width: var(--bar-width); min-width: 3px; height: 32px; align-items: center; justify-content: end; border-radius: 5px; padding-right: 8px; background: var(--primary); font-style: normal; }
.funnel-bar i b { color: var(--background); font: 700 13px/1 var(--font-mono); }
.funnel-bar > span { min-width: 32px; color: var(--muted); font: 400 11px/1 var(--font-mono); }
.funnel-list > p { margin: 15px 0 0; color: var(--muted); font-size: 12px; }

.back-link { display: inline-block; margin-bottom: 18px; color: var(--primary); font-weight: 600; text-decoration: none; }
.back-link:hover { text-decoration: underline; }
.post-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 0 0 14px; }
.post-meta > span { border-radius: 999px; padding: 5px 9px; background: var(--primary-soft); color: var(--primary); font: 500 9px/1 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; }
.post-meta time { color: var(--muted); font: 400 11px/1 var(--font-mono); }
.detail-stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 28px 0 16px; }
.detail-stat-grid article { display: flex; min-height: 152px; flex-direction: column; padding: 20px; }
.detail-stat-grid p { margin-bottom: 10px; color: var(--muted); font: 500 9px/1.4 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; }
.detail-stat-grid strong { font-size: 30px; line-height: 1; letter-spacing: -0.04em; }
.detail-stat-grid span { margin-top: auto; color: var(--muted); font-size: 11px; line-height: 1.4; }
.detail-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 16px; }
.detail-bars { display: flex; flex-direction: column; gap: 14px; margin-top: 18px; }
.detail-bars > div { display: grid; grid-template-columns: 130px 1fr 42px; align-items: center; gap: 12px; }
.detail-bars span { color: var(--muted); font-size: 13px; }
.detail-bars i { height: 10px; }
.detail-bars strong { font: 700 13px/1 var(--font-mono); text-align: right; }
.detail-note { display: flex; flex-direction: column; padding: 28px; }
.detail-note > p:not(.section-index) { font-size: 14px; line-height: 1.65; }
.detail-note > span { margin-top: auto; border-top: 1px solid var(--border); padding-top: 16px; color: var(--muted); font-size: 12px; line-height: 1.55; }

footer { border-top: 1px solid var(--border); background: var(--surface); }
footer > div { display: flex; justify-content: space-between; gap: 16px; padding: 28px 0; color: var(--muted); font: 400 10px/1.5 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; }

@media (max-width: 1000px) {
  .answer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .answer-card { min-height: 240px; }
  .detail-stat-grid { grid-template-columns: repeat(2, 1fr); }
  .audience-grid { grid-template-columns: 1fr; }
  .audience-card { min-height: 0; }
}

@media (max-width: 800px) {
  .utility-inner, .site-header, main, footer > div { width: min(100% - 40px, 680px); }
  .utility-inner { padding: 7px 0; align-items: flex-start; }
  .utility-controls { align-items: end; flex-direction: column; gap: 7px; }
  .site-header { grid-template-columns: 1fr auto; min-height: 112px; padding: 12px 0; }
  .site-header nav { grid-row: 2; grid-column: 1 / -1; width: 100%; margin-top: 12px; }
  .site-header nav a { flex: 1; text-align: center; }
  .header-context { display: none; }
  .overview-intro, .section-heading { align-items: flex-start; flex-direction: column; }
  .measurement-count { text-align: left; }
  .comparison-controls { width: 100%; align-items: flex-start; }
  .momentum-columns { gap: 8px; }
  .comparison-head { display: none; }
  .comparison-row { grid-template-columns: minmax(0, 1fr) 62px; gap: 10px; padding: 15px 18px; }
  .comparison-row > div:first-child, .comparison-row time, .comparison-row .comparison-scale { grid-column: 1; }
  .comparison-row > strong { grid-column: 2; grid-row: 1 / span 3; align-self: center; }
  .comparison-share { display: none; }
  .format-list article { grid-template-columns: minmax(150px, 0.8fr) 1fr; }
  .format-list article > p { grid-column: 1 / -1; }
  .detail-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  body { font-size: 14px; }
  .utility-inner, .site-header, main, footer > div { width: min(100% - 32px, 480px); }
  .utility-inner > span { display: none; }
  .utility-controls { width: 100%; flex-direction: row; justify-content: space-between; align-items: center; }
  .utility-controls > span { max-width: 178px; font-size: 8px; }
  main { padding: 24px 0 64px; }
  .page { gap: 52px; }
  .page-overview { gap: 16px; }
  .sample-caveat { gap: 10px; padding: 13px; }
  .sample-caveat strong { font-size: 8px; }
  .sample-caveat p { font-size: 11px; }
  h1 { font-size: clamp(2.1rem, 11vw, 2.8rem); }
  h2 { font-size: 1.45rem; }
  .page-intro > p:not(.section-index) { font-size: 14px; }
  .answer-grid, .derived-grid, .insight-grid { grid-template-columns: 1fr; }
  .answer-card { min-height: 0; }
  .answer-card:first-child { min-height: 230px; }
  .derived-grid { margin-bottom: 38px; }
  .derived-grid > div { padding: 14px 16px; }
  .momentum-columns { overflow-x: auto; grid-template-columns: repeat(6, 68px); padding-bottom: 4px; }
  .momentum-week { grid-template-rows: 175px auto; }
  .bar-pair { height: 175px; }
  .chart-card { padding: 20px; }
  .chart-title { align-items: flex-start; flex-direction: column; }
  .chart-axis { grid-template-columns: repeat(6, 74px); overflow-x: auto; text-align: left; }
  .chart-axis span { min-width: 74px; }
  .segmented-control { width: 100%; }
  .segmented-control button { flex: 1; padding-inline: 5px; }
  .outline-button { width: 100%; }
  .network-list article { grid-template-columns: minmax(0, 1fr) 42px; }
  .network-list i { grid-column: 1; }
  .network-list strong { grid-column: 2; grid-row: 1 / span 2; }
  .funnel-list article { grid-template-columns: 1fr; gap: 8px; }
  .detail-stat-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .detail-stat-grid article { min-height: 132px; padding: 16px; }
  .detail-stat-grid strong { font-size: 25px; }
  .detail-bars > div { grid-template-columns: 105px 1fr 36px; gap: 8px; }
  footer > div { align-items: flex-start; flex-direction: column; padding: 22px 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}