/* Since 1971 charts, the home-page teaser and the Since 1971 page.
   Chart modules reuse the supply-schedule chart language: the same axes, grid, orange line and fill,
   cursor and dot, and the same "Explore the timeline" control. August 15th, 1971 is marked in orange. */
.t71-card{margin:0;min-width:0}
.t71-card h3{font-size:22px;font-weight:500;line-height:1.3;letter-spacing:0;text-transform:none;margin:0 0 6px}
.t71-card .t71-sub{margin:0 0 var(--s4);max-width:34em;line-height:1.5}
.t71-value{display:flex;align-items:baseline;flex-wrap:wrap;gap:4px 12px;margin:0}
.t71-value strong{font-size:clamp(26px,2.3vw,32px);font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums lining-nums;line-height:1.3}
.t71-value-label{font-size:17px;color:var(--ink);font-weight:500}
.t71-when{font-size:16px;font-weight:500;color:#525252}
.t71-compare,.t71-aux{font-size:16px;line-height:1.5;color:#525252;margin:2px 0 0;font-variant-numeric:tabular-nums lining-nums}
.t71-aux b{color:var(--ink);font-weight:600}
.t71-base{white-space:nowrap}
.t71-card .t71-value+.t71-compare{margin-bottom:0}
.t71-axes{display:grid;grid-template-columns:48px minmax(0,1fr);gap:8px;margin-top:40px}
.t71-y{position:relative;font-size:15px;color:#525252;text-align:right;font-variant-numeric:tabular-nums lining-nums}
.t71-y span{position:absolute;right:0;transform:translateY(-50%);white-space:nowrap}
.t71-plot{height:220px;position:relative;cursor:crosshair}
.t71-wide .t71-plot{height:260px}
.t71-plot svg{width:100%;height:100%;display:block;overflow:visible}
.t71-x{position:relative;height:28px;margin-left:56px;font-size:15px;color:#525252;font-variant-numeric:tabular-nums lining-nums}
.t71-x span{position:absolute;top:4px;transform:translateX(-50%)}
.t71-x span:first-child{left:0;transform:none}.t71-x span:last-child{left:auto;right:0;transform:none}
.t71-line{fill:none;stroke-width:3;vector-effect:non-scaling-stroke;stroke-linejoin:round;stroke-linecap:round}
.t71-part{fill:none;stroke-width:2.5;stroke-dasharray:3 4;vector-effect:non-scaling-stroke;stroke-linecap:round}
.t71-s1{stroke:#3d5a73}
.t71-s2{stroke:#111111;stroke-width:2}
.t71-s3{stroke:#757575;stroke-width:2;stroke-dasharray:6 5}
.t71-part.t71-s2,.t71-part.t71-s3{stroke-width:2;stroke-dasharray:3 4}
.t71-ghost{fill:none;stroke:#b8b8b8;stroke-width:1.5;vector-effect:non-scaling-stroke;stroke-linejoin:round}
.t71-zero{fill:none;stroke:#838383;stroke-width:1;vector-effect:non-scaling-stroke}
.t71-mark{position:absolute;top:9.09%;bottom:9.09%;width:0;border-left:2px solid #f5991f;pointer-events:none;transform:translateX(-1px)}
.t71-mark b{position:absolute;bottom:calc(100% + 8px);left:0;transform:translateX(-50%);font-size:15px;font-weight:500;line-height:1.2;color:#f5991f;white-space:nowrap}
.t71-mark:after{content:'';position:absolute;top:-4px;left:-5px;width:8px;height:8px;border-radius:50%;background:#f5991f}
.t71-cursor{top:9.09%;bottom:9.09%}
.t71-dot{position:absolute;left:0;top:0;width:11px;height:11px;border:2px solid #fffefa;border-radius:50%;transform:translate(-50%,-50%);background:#3d5a73;box-shadow:0 0 0 5px #3d5a731f;pointer-events:none;transition:left 100ms linear,top 100ms linear,opacity 100ms linear}
.t71-dot.t71-s2{background:#111111;box-shadow:0 0 0 5px #11111114}
.t71-dot.t71-s3{background:#757575;box-shadow:0 0 0 5px #75757514}
.t71-dot.is-off{opacity:0}
.t71-axisnote{font-size:15px;color:#525252;margin:4px 0 0}
/* Multi-series readout: 1971 against the selected year, in tabular figures. */
.t71-ro{width:100%;border-collapse:collapse;margin:4px 0 0;font-variant-numeric:tabular-nums lining-nums}
.t71-ro th,.t71-ro td{padding:8px 0;border-bottom:1px solid #e1e1e1;text-align:right;font-size:16px;font-weight:400;color:#525252;vertical-align:baseline}
.t71-ro thead th{padding-top:0;font-size:14px;font-weight:600;letter-spacing:.08em;text-transform:uppercase}
.t71-ro tbody th{text-align:left;color:var(--ink);font-size:17px;font-weight:400;line-height:1.4;padding-right:16px}
.t71-ro td{width:96px;white-space:nowrap}
.t71-ro td[data-ro]{font-size:19px;font-weight:600;color:var(--ink)}
.t71-ro td small{display:block;font-size:13px;font-weight:500;color:#666666;letter-spacing:.02em}
.t71-na{font-size:14px}
.t71-key{display:inline-block;width:20px;height:3px;border-radius:2px;margin-right:10px;vertical-align:middle;background:#3d5a73;transform:translateY(-2px)}
.t71-key.t71-s2{background:#111111;height:2px}
.t71-key.t71-s3{height:2px;background:repeating-linear-gradient(90deg,#757575 0 6px,transparent 6px 10px)}
.t71-key.t71-ghost-key{height:2px;background:#b8b8b8}
.t71-key.t71-mark-key{width:2px;height:14px;background:#f5991f;border-radius:0;transform:translateY(0)}
/* Small multiples (prices by category). */
.t71-key-line{display:flex;flex-wrap:wrap;gap:8px 24px;margin:12px 0 0;font-size:16px;color:#525252}
.t71-minis{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px 40px;margin-top:32px}
.t71-mini{min-width:0}
.t71-mini-title{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin:0;font-size:17px;color:var(--ink)}
.t71-mini-title b{font-weight:600;font-variant-numeric:tabular-nums lining-nums}
.t71-axes-mini{margin-top:12px;grid-template-columns:44px minmax(0,1fr)}
.t71-plot-mini{height:128px}
.t71-mini .t71-x{margin-left:52px}
/* Notes, sources and data. */
.t71-notes{margin-top:var(--s5);padding-top:var(--s4);border-top:1px solid #e1e1e1}
.t71-note{font-size:16px;line-height:1.6;max-width:44em}
.t71-source{font-size:15px;line-height:1.6;color:#595959;margin:var(--s3) 0 0;max-width:60em}
.t71-links{display:flex;flex-wrap:wrap;gap:4px 16px;margin:6px 0 0;font-size:15px;line-height:1.6}
.t71-links a{text-decoration:underline;text-underline-offset:4px;color:var(--ink)}
.t71-data{border:0;margin-top:var(--s2)}
.t71-data summary{padding:var(--s2) 0;font-size:16px;font-weight:500}
.t71-method{margin:var(--s2) 0 var(--s4);padding-left:18px;font-size:16px;line-height:1.6;color:var(--body);max-width:46em}
.t71-method li+li{margin-top:6px}
.t71-table{max-height:340px;overflow:auto;border:1px solid #e1e1e1;background:#fffefa;margin-bottom:var(--s2)}
.t71-table table{border-collapse:collapse;width:100%;font-size:15px;font-variant-numeric:tabular-nums lining-nums}
.t71-table th,.t71-table td{padding:6px 12px;text-align:right;border-bottom:1px solid #efefef;white-space:nowrap;color:var(--ink);font-weight:400}
.t71-table thead th{position:sticky;top:0;background:#f0f0f0;font-weight:600;white-space:normal;min-width:96px;vertical-align:bottom;line-height:1.3}
.t71-table tbody th{text-align:left;font-weight:500}
.t71-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
/* Timeline control, per chapter: sticks to the bottom of the screen while its charts are in view. */
.t71-controls{position:sticky;bottom:0;z-index:6;background:color-mix(in srgb,var(--page-surface) 95%,transparent);padding-bottom:var(--s3)}
@supports (backdrop-filter:blur(8px)){.t71-controls{backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}}
/* One-time reveal as a chart arrives: a left-to-right wipe of the plot (800 ms), then the end dots. */
.t71-ready:not(.t71-drawn) .t71-plot svg{clip-path:inset(0 100% 0 0)}
.t71-ready:not(.t71-drawn) .t71-dot{opacity:0}
.t71-drawn .t71-plot svg{animation:t71-wipe 800ms var(--ease-out) both}
.t71-drawn .t71-dot:not(.is-off){animation:t71-fade 250ms 600ms both}
@keyframes t71-wipe{from{clip-path:inset(-12px 100% -12px 0)}to{clip-path:inset(-12px -12px -12px -12px)}}
@keyframes t71-fade{from{opacity:0}to{opacity:1}}
/* The cursor line appears once a visitor moves the timeline away from the latest year. */
.is-latest .t71-cursor{opacity:0}
.t71-cursor{transition:left 100ms linear,opacity 100ms linear}
.t71-mini .t71-mark{border-left-width:1px;opacity:.85}
.t71-mini .t71-mark:after{display:none}
.t71-ro thead th[data-when]{white-space:nowrap}
.t71-ro th+th,.t71-ro td{padding-left:16px}
.t71-wide .t71-ro{max-width:760px}
/* Hero graphic on the Since 1971 page: the purchasing-power line on navy. */
.t71-hero-side{position:relative;z-index:2;min-width:0;border-left:1px solid #ffffff28;padding-left:var(--s6)}
.t71-hero-side .t71-index{border:0;padding:0}
.t71-hero-chart .protocol-fill{display:none}
.t71-hero-chart{margin:0 0 var(--s7)}
.t71-hero-chart figcaption{display:flex;justify-content:space-between;align-items:baseline;gap:var(--s4);font-size:15px;line-height:1.4;color:#cacaca;margin-bottom:var(--s5)}
.t71-hero-chart figcaption b{font-size:22px;font-weight:600;color:#fff;font-variant-numeric:tabular-nums lining-nums}
.t71-hero-chart .t71-axes{margin-top:0;grid-template-columns:36px minmax(0,1fr)}
.t71-hero-chart .t71-plot{height:170px;cursor:default}
.t71-hero-chart .t71-y{color:#a0a0a0;font-size:14px}
.t71-hero-chart .t71-x{margin-left:44px;color:#a0a0a0;font-size:14px}
.t71-hero-chart .protocol-grid{stroke:#ffffff1c}
.t71-hero-chart .t71-mark b{color:#f5991f}
.t71-hero-chart .t71-mark:after{background:#f5991f}
.t71-hero-chart .t71-dot{border-color:#111111;box-shadow:0 0 0 5px #3d5a7326}
/* Home teaser, right after the Bitcoin supply schedule. */
.t71-teaser{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:var(--s8) clamp(40px,6vw,96px);align-items:start;border-top:1px solid #d6d6d6;max-width:none}
.t71-teaser-copy>p:not(.fine){font-size:21px;line-height:1.55;max-width:18em;margin-top:var(--s5);color:var(--body)}
.t71-teaser-copy .button{margin-top:var(--s6)}
.t71-teaser-copy .fine{margin-top:var(--s5);max-width:22em}
.t71-teaser-chart{min-width:0;padding-top:6px}
.t71-teaser-copy{align-self:center}
.t71-teaser .t71-controls{position:static;background:none;backdrop-filter:none}
@media(max-width:900px){.t71-teaser{grid-template-columns:minmax(0,1fr)}.t71-teaser-copy>p:not(.fine){max-width:26em}}

/* Since 1971 page */
.page-1971{background:var(--page-surface)}
.hero-1971{min-height:0;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:var(--s9) clamp(48px,6vw,96px);align-items:end;padding:176px max(6vw,calc((100vw - 1360px)/2)) calc(var(--section-fade) + var(--s8))}
.hero-1971 .hero-content{width:auto;max-width:780px}
.hero .button-light{box-shadow:none}
.hero-1971 h1{font-size:clamp(44px,5.2vw,78px)}
.hero-1971 .hero-content>p:not(.t71-eyebrow):not(.t71-caution){max-width:30em;font-size:21px;line-height:1.6;color:#e8e8e8;margin:var(--s6) 0 var(--s7)}
.t71-eyebrow{font-size:16px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:#c2c2c2;margin:0 0 var(--s5)}
.t71-hero-actions{display:flex;flex-wrap:wrap;gap:var(--s4)}
.t71-hero-actions .button span{font-size:19px;line-height:1}
.t71-caution{margin:var(--s6) 0 0;font-size:17px;color:#d9d9d9;padding-left:var(--s4);border-left:2px solid var(--orange)}
.t71-index{position:relative;z-index:2;border-left:1px solid #ffffff28;padding:var(--s2) 0 var(--s2) var(--s6)}
.t71-index-title{font-size:16px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:#c2c2c2;margin:0 0 var(--s2)}
.t71-index ol{list-style:none;margin:0;padding:0}
.t71-index a{display:grid;grid-template-columns:36px minmax(0,1fr) auto;align-items:baseline;gap:var(--s2);padding:var(--s4) 0;border-bottom:1px solid #ffffff22;color:#fff;transition:color var(--dur-1) var(--ease-out)}
.t71-index a span{font-size:16px;font-weight:600;color:var(--orange);font-variant-numeric:tabular-nums lining-nums}
.t71-index a b{font-size:21px;font-weight:500;line-height:1.35}
.t71-index a em{font-style:normal;font-size:15px;color:#b4b4b4;white-space:nowrap}
@media(hover:hover) and (pointer:fine){.t71-index a:hover b{color:var(--orange)}}
.t71-byline{font-size:15px;line-height:1.6;color:#b4b4b4;margin:var(--s4) 0 0}
.t71-reading{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:var(--s6) clamp(40px,6vw,96px);align-items:start;padding-top:var(--s8);padding-bottom:var(--section-y)}
.t71-reading-body p{font-size:21px;line-height:1.6;max-width:31em}
.t71-key-axis{position:relative;display:block;height:64px;margin:var(--s7) 0 var(--s6);max-width:620px}
.t71-key-rail{position:absolute;left:0;right:0;top:32px;height:2px;background:#a3a3a3}
.t71-key-mark{top:18px;bottom:auto;height:30px}
.t71-key-mark b{bottom:calc(100% + 6px)}
.t71-key-labels{position:absolute;left:0;right:0;top:44px;height:20px;font-size:15px;color:#525252;font-variant-numeric:tabular-nums lining-nums}
.t71-key-labels span{position:absolute;transform:translateX(-50%)}
.t71-key-labels span:first-child{left:0;transform:none}.t71-key-labels span:last-child{right:0;transform:none}
.t71-chapter{padding-top:var(--section-y);padding-bottom:0;scroll-margin-top:0}
.t71-chapter+.t71-chapter{border-top:1px solid #d6d6d6}
.t71-chapter-head{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:var(--s4) clamp(40px,6vw,96px);align-items:end;margin-bottom:var(--s9)}
.t71-kicker{grid-column:1/-1;font-size:16px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:#666666;margin:0}
.t71-intro{font-size:21px;line-height:1.55;max-width:30em}
.t71-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s10) var(--s8)}
.t71-wide{grid-column:1/-1}
.t71-chapter .t71-controls{margin-top:var(--s9);display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:0 var(--s6);padding:var(--s3) 0}
.t71-chapter .t71-controls label{justify-content:flex-start;gap:var(--s4);font-size:18px;white-space:nowrap}
.t71-chapter .t71-controls .protocol-year{font-size:26px;min-width:4ch}
.t71-chapter .t71-controls input[type=range]{margin:0}
.t71-chapter .t71-controls .protocol-control-bottom p{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.t71-chapter .t71-controls .protocol-reset{white-space:nowrap}
.t71-methods{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:var(--s6) clamp(40px,6vw,96px);align-items:start;border-top:1px solid #d6d6d6}
.t71-methods-body p{font-size:19px;line-height:1.6;max-width:36em}
.t71-methods-body p+p{margin-top:var(--s4)}
.t71-caution-dark{font-weight:500;color:var(--ink)!important;padding-left:var(--s4);border-left:2px solid var(--orange)}
.t71-next{border-top:1px solid #d6d6d6}
.t71-next-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:var(--s6) var(--s8);align-items:start}
.t71-next-card{position:relative;display:block;border-top:1px solid var(--line);padding:var(--s5) var(--s8) var(--s6) 0;transition:box-shadow var(--dur-2) var(--ease-out)}
.t71-next-card>span{display:block;font-size:16px;letter-spacing:.04em;color:#575757;line-height:1.5}
.t71-next-card h3{font-size:27px;font-weight:500;line-height:1.3;margin-top:var(--s3);transition:color var(--dur-1) var(--ease-out)}
.t71-next-card p{font-size:19px;line-height:1.6;margin-top:var(--s3);max-width:30em}
.t71-next-card .t71-next-risk{font-size:17px;color:#595959}
.t71-next-card b{position:absolute;right:0;top:var(--s5);font-size:24px;font-weight:400;transition:transform var(--dur-1) var(--ease-out)}
@media(hover:hover) and (pointer:fine){.t71-next-card:hover{box-shadow:inset 0 2px 0 var(--orange)}.t71-next-card:hover h3{color:#f5991f}.t71-next-card:hover b{transform:translate(3px,-3px)}}
.t71-guides{grid-column:auto;grid-template-columns:1fr;border-top:1px solid var(--line);padding-top:var(--s5);gap:0}
.t71-guides h3{margin-bottom:var(--s2)}
.t71-next-cta{display:flex;align-items:center;justify-content:space-between;gap:var(--s6) var(--s8);border-top:1px solid var(--line);padding-top:var(--s6);margin-top:var(--s2)}
.t71-next-cta p{font-size:20px;line-height:1.6;max-width:32em}
.t71-next-cta .button{flex:none}
.t71-next-disclosure{margin:0}

@media(max-width:1100px){.hero-1971{grid-template-columns:minmax(0,1fr);padding-top:160px}.t71-hero-side{border-left:0;padding-left:0;max-width:620px}.t71-hero-side .t71-index{border-top:1px solid #ffffff28;padding-top:var(--s5)}}
@media(max-width:900px){.t71-reading,.t71-chapter-head,.t71-methods{grid-template-columns:minmax(0,1fr)}.t71-next-grid{grid-template-columns:minmax(0,1fr)}.t71-next-cta{flex-direction:column;align-items:flex-start}}
@media(max-width:760px){
  .t71-grid{grid-template-columns:minmax(0,1fr);gap:var(--s9)}
  .t71-plot,.t71-wide .t71-plot{height:200px}
  .t71-minis{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px}
  .t71-plot-mini{height:112px}
  .t71-axes-mini{grid-template-columns:40px minmax(0,1fr)}
  .t71-mini .t71-x{margin-left:48px}
  .t71-ro tbody th{font-size:16px}
  .t71-ro td{width:80px}
}
@media(max-width:620px){
  .hero-1971{padding:132px 24px calc(var(--section-fade) + var(--s6))}
  .hero-1971 h1{font-size:clamp(32px,9.2vw,55px)}
  .hero-1971 .hero-content>p:not(.t71-eyebrow):not(.t71-caution){font-size:19px;margin:var(--s5) 0 var(--s6)}
  .t71-hero-actions .button{width:100%;justify-content:space-between}
  .t71-index a b{font-size:19px}
  .t71-reading-body p,.t71-intro{font-size:19px}
  .t71-key-axis{height:60px}
  .t71-chapter-head{margin-bottom:var(--s7)}
  .t71-axes{grid-template-columns:40px minmax(0,1fr);margin-top:36px}
  .t71-x{margin-left:48px;font-size:14px}
  .t71-x span:nth-child(2){display:none}
  .t71-br{display:none}
  .t71-y{font-size:14px}
  .t71-mark b{font-size:14px}
  .t71-minis{gap:28px 16px}
  .t71-mini-title{font-size:15px}
  .t71-axes-mini{grid-template-columns:36px minmax(0,1fr)}
  .t71-mini .t71-x{margin-left:44px;font-size:13px}
  .t71-mini .t71-x span:not(:first-child):not(:last-child){display:none}
  .t71-ro td{width:auto}
  .t71-ro tbody th{font-size:15px;line-height:1.35}
  .t71-ro td[data-ro]{font-size:17px}
  .t71-ro th+th,.t71-ro td{padding-left:12px}
  .t71-controls{padding-top:12px}
  .t71-controls label{font-size:17px}
  .t71-controls .protocol-year{font-size:24px}
  .t71-controls input[type=range]{height:36px;margin:4px 0}
  .t71-chapter .t71-controls{grid-template-columns:minmax(0,1fr) auto;gap:0 var(--s4);padding:var(--s2) 0 var(--s2)}
  .t71-chapter .t71-controls label{grid-column:1;grid-row:1;font-size:16px}
  .t71-chapter .t71-controls .protocol-control-bottom{grid-column:2;grid-row:1}
  .t71-chapter .t71-controls input[type=range]{grid-column:1/-1;grid-row:2}
  .t71-chapter .t71-controls .protocol-reset{min-width:0;padding:4px 0}
  .t71-teaser-copy>p:not(.fine){font-size:20px}
  .t71-next-card{padding-right:var(--s7)}
  .t71-next-card h3{font-size:24px}
  .t71-next-cta .button{width:100%;justify-content:space-between}
}
@media(prefers-reduced-motion:reduce){.t71-card *{animation:none!important;transition:none!important}.t71-plot svg{clip-path:none!important}.t71-mark,.t71-dot:not(.is-off){opacity:1!important}}

/* Percentage labels need more room than the former index values. */
.t71-axes-mini{grid-template-columns:64px minmax(0,1fr)}
.t71-mini .t71-x{margin-left:72px}
@media(max-width:620px){.t71-minis{grid-template-columns:1fr}.t71-plot-mini{height:160px}}