.cement-story {
  --cement-ink: #14211c;
  --cement-muted: #53645d;
  --cement-green: #087a5b;
  --cement-lime: #cbe85d;
  --cement-yellow: #f3c64d;
  --cement-coral: #e06950;
  --cement-blue: #285d75;
  --cement-line: #d8e0dc;
  --cement-paper: #ffffff;
  --cement-soft: #f2f5f1;
  margin: 0;
  overflow-x: hidden;
  background: var(--cement-paper);
  color: var(--cement-ink);
}

.cement-story *, .cement-story *::before, .cement-story *::after { box-sizing: border-box; }
.cement-wrap { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.cement-hero { padding: 76px 0 58px; background: #11271f; color: #fff; }
.cement-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 70px; align-items: end; }
.cement-eyebrow { margin: 0 0 13px; color: var(--cement-green); font-size: 12px; font-weight: 900; text-transform: uppercase; letter-spacing: .08em; }
.cement-hero .cement-eyebrow { color: var(--cement-lime); }
.cement-hero h1 { max-width: 820px; margin: 0; color: #fff; font-size: clamp(44px, 6vw, 76px); line-height: .98; font-weight: 900; }
.cement-lede { max-width: 760px; margin: 24px 0 0; color: #dbe8e2; font-size: clamp(18px, 2vw, 22px); line-height: 1.55; }
.cement-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.cement-meta span { border: 1px solid rgba(255,255,255,.22); border-radius: 4px; padding: 6px 9px; color: #c3d2cb; font-size: 12px; font-weight: 750; }
.hero-stat { border-top: 5px solid var(--cement-yellow); background: #fff; color: var(--cement-ink); padding: 26px; border-radius: 5px; }
.hero-stat-label { color: var(--cement-muted); font-size: 11px; font-weight: 900; text-transform: uppercase; letter-spacing: .07em; }
.hero-stat strong { display: block; margin-top: 10px; color: var(--cement-coral); font-size: 46px; line-height: 1; }
.hero-stat p { margin: 10px 0 8px; color: var(--cement-ink); font-weight: 800; line-height: 1.4; }
.hero-stat small { display: block; color: var(--cement-muted); line-height: 1.45; }
.quick-answer { border-bottom: 1px solid var(--cement-line); background: var(--cement-yellow); }
.quick-answer p { margin: 0; padding: 22px 0; color: #2b2b20; font-size: 16px; line-height: 1.58; }

.cement-lab { padding: 62px 0 70px; background: #edf3ef; color: var(--cement-ink); }
.lab-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; }
.lab-heading h2 { margin: 0; color: var(--cement-ink); font-size: clamp(31px, 4vw, 48px); line-height: 1.08; }
.lab-heading > p { max-width: 320px; margin: 0; color: var(--cement-muted); text-align: right; }
.timeline-controls { display: grid; grid-template-columns: 46px 1fr 46px auto; gap: 14px; align-items: end; margin-top: 34px; padding: 20px; border: 1px solid #b8c7bf; background: #fff; border-radius: 6px; }
.timeline-button, .play-button, .reset-button, .number-control button { border: 0; cursor: pointer; font-weight: 900; }
.timeline-button { width: 46px; height: 46px; border: 1px solid var(--cement-line); border-radius: 4px; background: var(--cement-soft); color: var(--cement-ink); font-size: 20px; }
.timeline-button:hover, .timeline-button:focus-visible { background: #dfe9e3; }
.timeline-slider-wrap label { display: block; margin-bottom: 8px; color: var(--cement-muted); font-size: 13px; }
.timeline-slider-wrap label strong { color: var(--cement-ink); }
#timelineSlider { width: 100%; height: 24px; margin: 0; accent-color: var(--cement-green); cursor: ew-resize; }
.timeline-ticks { display: grid; grid-template-columns: repeat(9, 1fr); margin-top: 3px; color: #6c7e75; font-size: 10px; font-weight: 800; }
.timeline-ticks span { text-align: center; }
.timeline-ticks span:first-child { text-align: left; }
.timeline-ticks span:last-child { text-align: right; }
.play-button { min-height: 46px; border-radius: 4px; padding: 0 18px; background: var(--cement-green); color: #fff; }
.play-button span { margin-right: 7px; }
.play-button.is-playing { background: var(--cement-coral); }
.metric-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 18px; border: 1px solid #c2cec7; background: #c2cec7; }
.metric { min-height: 136px; padding: 22px; background: #fff; }
.metric span, .metric small { display: block; color: var(--cement-muted); font-size: 12px; font-weight: 750; }
.metric strong { display: block; margin: 12px 0 5px; color: var(--cement-ink); font-size: clamp(25px, 3vw, 36px); line-height: 1; }
.chart-layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 22px; margin-top: 22px; align-items: start; }
.chart-panel { min-width: 0; border: 1px solid #c2cec7; background: #fff; padding: 24px; border-radius: 6px; }
.chart-topline { display: flex; align-items: start; justify-content: space-between; gap: 24px; }
.chart-topline h3 { margin: 0; color: var(--cement-ink); font-size: 18px; }
.chart-topline p { margin: 6px 0 0; color: var(--cement-muted); font-size: 12px; }
.chart-legend { display: flex; gap: 15px; color: var(--cement-muted); font-size: 11px; font-weight: 800; white-space: nowrap; }
.chart-legend span { display: flex; align-items: center; gap: 6px; }
.chart-legend i { width: 18px; height: 8px; display: inline-block; }
.legend-band { background: rgba(8,122,91,.2); }
.legend-line { border-top: 3px solid var(--cement-green); }
.chart-scroller { width: 100%; overflow-x: auto; scrollbar-width: thin; }
#priceChart { width: 100%; min-width: 650px; height: auto; margin-top: 15px; overflow: visible; }
.grid-line { stroke: #dde5e1; stroke-width: 1; }
.grid-label { fill: #708078; font-size: 11px; font-weight: 700; }
.range-area { fill: rgba(8,122,91,.18); stroke: none; transition: d .35s ease; }
.mid-line { fill: none; stroke: var(--cement-green); stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; }
.data-point { fill: #fff; stroke: var(--cement-green); stroke-width: 3; }
.data-label { fill: #5e7067; font-size: 10px; font-weight: 800; text-anchor: middle; }
.focus-line { stroke: var(--cement-coral); stroke-width: 2; stroke-dasharray: 5 5; }
.focus-dot { fill: var(--cement-coral); stroke: #fff; stroke-width: 4; }
.focus-label { fill: var(--cement-coral); font-size: 11px; font-weight: 900; text-anchor: middle; }
.source-note { min-height: 62px; margin-top: 8px; border-left: 4px solid var(--cement-yellow); background: #fff8dc; padding: 13px 14px; color: #524b2d; font-size: 12px; line-height: 1.5; }
.calculator-panel { position: sticky; top: 88px; border: 1px solid #9fb2a8; border-top: 6px solid var(--cement-yellow); background: #132a22; color: #fff; padding: 24px; border-radius: 6px; }
.calculator-panel .cement-eyebrow { color: var(--cement-lime); }
.calculator-panel h3 { margin: 0 0 24px; color: #fff; font-size: 25px; }
.calculator-panel label { display: block; margin: 18px 0 7px; color: #c8d8d0; font-size: 12px; font-weight: 800; }
.number-control { display: grid; grid-template-columns: 58px 1fr 58px; min-height: 48px; }
.number-control input, .budget-input input { min-width: 0; border: 0; background: #fff; color: var(--cement-ink); outline: 0; padding: 0 12px; font-weight: 850; }
.number-control input { text-align: center; font-size: 18px; }
.number-control button { background: var(--cement-lime); color: #23351a; }
.cost-result { margin-top: 18px; padding: 18px 0; border-top: 1px solid rgba(255,255,255,.16); border-bottom: 1px solid rgba(255,255,255,.16); }
.cost-result span, .cost-result small { display: block; color: #c8d8d0; font-size: 11px; line-height: 1.45; }
.cost-result strong { display: block; margin: 8px 0; color: #fff; font-size: 23px; line-height: 1.2; }
.budget-input { display: grid; grid-template-columns: 40px 1fr; height: 48px; }
.budget-input span { display: grid; place-items: center; background: var(--cement-yellow); color: #352d13; font-weight: 900; }
.budget-result { margin: 12px 0 0; color: #c8d8d0; font-size: 13px; }
.budget-result strong { color: var(--cement-lime); }
.reset-button { width: 100%; min-height: 42px; margin-top: 18px; border: 1px solid rgba(255,255,255,.25); border-radius: 4px; background: transparent; color: #fff; }
.reset-button:hover { background: rgba(255,255,255,.08); }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.cement-article { max-width: 920px; padding: 64px 0 76px; }
.cement-toc { display: flex; flex-wrap: wrap; gap: 10px 18px; padding: 18px 0 22px; border-top: 2px solid var(--cement-ink); border-bottom: 1px solid var(--cement-line); }
.cement-toc strong { margin-right: 8px; color: var(--cement-ink); }
.cement-toc a { color: var(--cement-green); font-size: 14px; font-weight: 800; text-decoration: none; }
.cement-article section { padding: 54px 0; border-bottom: 1px solid var(--cement-line); }
.cement-article h2 { max-width: 760px; margin: 0 0 18px; color: var(--cement-ink); font-size: clamp(29px, 4vw, 42px); line-height: 1.1; }
.cement-article h3 { color: var(--cement-ink); }
.cement-article p, .cement-article li { color: var(--cement-muted); font-size: 17px; line-height: 1.75; }
.explain-box, .warning-box { margin: 28px 0 0; border-left: 5px solid var(--cement-green); background: var(--cement-soft); padding: 22px; }
.explain-box strong, .warning-box strong { color: var(--cement-ink); font-size: 18px; }
.explain-box p, .warning-box p { margin: 7px 0 0; font-size: 15px; }
.warning-box { border-left-color: var(--cement-coral); background: #fff1ed; }
.reason-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin: 28px 0; border: 1px solid var(--cement-line); background: var(--cement-line); }
.reason-grid > div { min-height: 220px; background: #fff; padding: 22px; }
.reason-grid span { color: var(--cement-coral); font-size: 12px; font-weight: 900; }
.reason-grid h3 { margin: 24px 0 8px; }
.reason-grid p { margin: 0; font-size: 14px; line-height: 1.6; }
.action-list { margin-top: 24px; padding-left: 24px; }
.action-list li { margin: 16px 0; padding-left: 8px; }
.data-table-wrap { max-width: 100%; overflow-x: auto; }
.data-table-wrap table { min-width: 650px; }
.data-table-wrap caption { padding: 14px 0; color: var(--cement-ink); font-weight: 900; text-align: left; }
.data-table-wrap th { width: auto; background: var(--cement-soft); }
.cement-article details { padding: 19px 0; }
.cement-article summary { color: var(--cement-ink); font-size: 17px; }
.related-grid, .source-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 25px; }
.related-grid a, .source-cards a { min-height: 155px; border: 1px solid var(--cement-line); border-radius: 5px; background: #fff; padding: 18px; color: var(--cement-ink); text-decoration: none; display: flex; flex-direction: column; }
.related-grid a:hover, .source-cards a:hover { border-color: var(--cement-green); }
.related-grid strong, .source-cards strong { line-height: 1.35; }
.related-grid span, .source-cards small { margin-top: auto; padding-top: 18px; color: var(--cement-green); font-size: 12px; font-weight: 800; }
.source-cards { grid-template-columns: 1fr 1fr; }
.source-cards a > span { color: var(--cement-coral); font-size: 11px; font-weight: 900; text-transform: uppercase; }
.source-cards strong { margin-top: 12px; }
.editorial-note { margin-top: 20px; font-size: 13px !important; }
.cement-footer { background: #11271f; color: #fff; padding: 34px 0; }
.cement-footer .cement-wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.cement-footer strong { font-size: 20px; }
.cement-footer span { color: #c6d5ce; font-size: 13px; }

@media (max-width: 920px) {
  .cement-hero-grid, .chart-layout { grid-template-columns: 1fr; }
  .hero-stat { max-width: 430px; }
  .calculator-panel { position: static; }
  .related-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 700px) {
  .cement-wrap { width: min(100% - 28px, 1180px); }
  .cement-hero { padding: 44px 0 38px; }
  .cement-hero-grid { gap: 30px; }
  .cement-hero h1 { font-size: 42px; line-height: 1.03; }
  .cement-lede { font-size: 17px; }
  .hero-stat { padding: 20px; }
  .cement-lab { padding: 44px 0 48px; }
  .lab-heading { display: block; }
  .lab-heading > p { margin-top: 10px; text-align: left; }
  .timeline-controls { grid-template-columns: 44px 1fr 44px; padding: 14px; gap: 8px; }
  .play-button { grid-column: 1 / -1; }
  .timeline-ticks span:nth-child(even) { visibility: hidden; }
  .metric-row { grid-template-columns: 1fr; }
  .metric { min-height: 112px; }
  .chart-panel { padding: 16px; }
  .chart-topline { display: block; }
  .chart-legend { margin-top: 12px; }
  .cement-article { padding-top: 44px; }
  .cement-article section { padding: 42px 0; }
  .cement-article p, .cement-article li { font-size: 16px; }
  .reason-grid, .related-grid, .source-cards { grid-template-columns: 1fr; }
  .reason-grid > div { min-height: 180px; }
  .cement-footer .cement-wrap { display: block; }
  .cement-footer span { display: block; margin-top: 5px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}