/* t1-features-a.css · written by components/tau/t1-extract.mjs from components/reference/tau/features/: the stylesheet the proposals 01, 02, 03, 04, 05, 06 share */
/* Three proposals for the Tau hero, one at a time, on Tau's own tokens. */
:root {
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --page: #fcfcfb; --ground: #f1f0ed; --raised: #ffffff; --ink: #0b0b0b; --ink2: #52514e; --ink3: #6c6b69; --faded: #97958d;
  --line: rgb(11 11 11 / 10%); --line-strong: rgb(11 11 11 / 20%);
  --glass: rgb(255 255 255 / 78%); --accent: #6250d6;
  --e1: 0 3px 6px -2px rgb(0 0 0 / .02), 0 1px 1px rgb(0 0 0 / .04);
  --e2: 0 0 0 .5px rgb(0 0 0 / .06), 0 6px 18px rgb(0 0 0 / .05), 0 3px 9px rgb(0 0 0 / .06), 0 1px 1px rgb(0 0 0 / .04);
  --e3: 0 0 0 .5px rgb(0 0 0 / .06), 0 24px 64px rgb(0 0 0 / .16), 0 8px 24px rgb(0 0 0 / .10), 0 1px 1px rgb(0 0 0 / .04);
  --m: clamp(16px, 2.8vw, 40px);
  --statement: clamp(38px, 6.4vw, 96px);
  --tau-ease: linear(0, 0.0234 0.39%, 0.0740 1.28%, 0.1420 2.54%, 0.2210 4.15%, 0.3058 6.06%, 0.3921 8.27%, 0.4764 10.75%, 0.5561 13.48%, 0.6294 16.47%, 0.6951 19.70%, 0.7528 23.17%, 0.8025 26.86%, 0.8443 30.78%, 0.8791 34.91%, 0.9074 39.26%, 0.9301 43.81%, 0.9481 48.56%, 0.9621 53.52%, 0.9728 58.67%, 0.9810 64.02%, 0.9870 69.55%, 0.9915 75.28%, 0.9948 81.19%, 0.9972 87.28%, 0.9988 93.55%, 1);
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) {
  color-scheme: dark; --page: #0d0d0d; --ground: #161615; --raised: #1f1f1e; --ink: #f0efec; --ink2: #c3c2b7; --ink3: #8f8e89; --faded: #5f5e5a;
  --line: rgb(255 255 255 / 10%); --line-strong: rgb(255 255 255 / 20%); --glass: rgb(40 40 40 / 75%);
  --e2: 0 0 0 .5px rgb(255 255 255 / 8%), 0 6px 18px rgb(0 0 0 / .4), 0 1px 1px rgb(0 0 0 / .3);
  --e3: 0 0 0 .5px rgb(255 255 255 / 9%), 0 24px 64px rgb(0 0 0 / .6), 0 8px 24px rgb(0 0 0 / .4); } }
:root[data-theme="dark"] {
  color-scheme: dark; --page: #0d0d0d; --ground: #161615; --raised: #1f1f1e; --ink: #f0efec; --ink2: #c3c2b7; --ink3: #8f8e89; --faded: #5f5e5a;
  --line: rgb(255 255 255 / 10%); --line-strong: rgb(255 255 255 / 20%); --glass: rgb(40 40 40 / 75%);
  --e2: 0 0 0 .5px rgb(255 255 255 / 8%), 0 6px 18px rgb(0 0 0 / .4), 0 1px 1px rgb(0 0 0 / .3);
  --e3: 0 0 0 .5px rgb(255 255 255 / 9%), 0 24px 64px rgb(0 0 0 / .6), 0 8px 24px rgb(0 0 0 / .4); }
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--page); color: var(--ink); }
body { font: 400 15px/24px var(--font); letter-spacing: -0.011em; -webkit-font-smoothing: antialiased; font-feature-settings: "ss01", "cv01", "cv11"; }
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } }

/* the bar, as on the site */
.bar { position: fixed; z-index: 50; top: calc(12px + env(safe-area-inset-top, 0px)); left: 50%; transform: translateX(-50%); display: flex; align-items: center; gap: 4px; height: 48px; padding: 0 4px 0 14px;
  border-radius: 9999px; background: var(--glass); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); box-shadow: 0 0 0 .5px var(--line), var(--e2); font-size: 13px; white-space: nowrap; }
.bar b { font-weight: 550; font-size: 14px; margin-right: 12px; }
.bar span { padding: 0 10px; color: var(--ink2); }
.bar i { font-style: normal; margin-left: 8px; height: 36px; padding: 0 16px; display: flex; align-items: center; border-radius: 9999px; background: var(--ink); color: var(--page); }
@media (max-width: 720px) { .bar span { display: none; } }

/* the switcher between the proposals */
.pick { position: fixed; z-index: 60; left: 50%; bottom: calc(16px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; width: min(560px, calc(100% - 32px)); }
.pick-note { margin: 0; padding: 8px 14px; border-radius: 10px; background: var(--glass); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); box-shadow: 0 0 0 .5px var(--line), var(--e2);
  font-size: 13px; line-height: 19px; color: var(--ink2); text-align: center; }
.pick-dock { display: flex; gap: 2px; padding: 4px; border-radius: 9999px; background: var(--glass); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); box-shadow: 0 0 0 .5px var(--line), var(--e2); }
.pick-dock button { height: 36px; padding: 0 14px; border: 0; border-radius: 9999px; background: none; font: 500 13px/1 var(--font); color: var(--ink3); cursor: pointer; }
.pick-dock button[aria-pressed="true"] { background: color-mix(in srgb, var(--ink) 12%, transparent); color: var(--ink); }
.pick-dock button:focus-visible { outline: 1.5px solid var(--accent); outline-offset: 2px; }

.next { padding: 120px var(--m) 200px; }
.next h2 { margin: 0 0 24px; font: 450 clamp(28px, 3.1vw, 48px)/1.06 var(--font); letter-spacing: -0.026em; }
.next p { margin: 0; max-width: 40em; color: var(--ink2); }
.small { font-size: 13px; line-height: 20px; color: var(--ink3); }


/* ---------------------------------------------------------------- shared */
.bud { padding: 120px 0 200px; }
.wrap { padding-inline: var(--m); }
.sec-head { display: flex; justify-content: space-between; align-items: baseline; gap: 24px; padding-bottom: clamp(24px, 2.4vw, 36px); }
.sec-head h2 { margin: 0; font: 450 clamp(28px, 3.1vw, 48px)/1.06 var(--font); letter-spacing: -0.026em; }
.more { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 500; white-space: nowrap; }
.more::after { content: ""; width: 18px; height: 1px; background: currentColor; transition: width 150ms linear; }
.more:is(:hover, [data-hover])::after { width: 28px; transition-duration: 0s; }
.name { margin: 0; font: 450 clamp(22px, 2.1vw, 32px)/1.15 var(--font); letter-spacing: -0.02em; }
.type { font-size: 13px; line-height: 20px; color: var(--ink3); }
.line { margin: 0; font-size: 16px; line-height: 26px; color: var(--ink2); text-wrap: pretty; }
.shot { position: relative; overflow: hidden; border-radius: 8px; background: var(--raised); box-shadow: 0 0 0 .5px var(--line), var(--e1); }
.shot img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: top; pointer-events: none; -webkit-user-drag: none; }
.drag { cursor: grab; touch-action: pan-y; user-select: none; -webkit-user-select: none; outline: none; }
.drag.is-held { cursor: grabbing; }
.drag:focus-visible { box-shadow: 0 0 0 1.5px var(--accent); border-radius: 8px; }

/* 1. the strips */
.strips { display: flex; flex-direction: column; }
.strip { display: grid; grid-template-columns: minmax(200px, 1fr) 3fr; gap: 24px; padding: 28px 0; border-top: .5px solid var(--line-strong); align-items: center; }
.strip:last-child { border-bottom: .5px solid var(--line-strong); }
.strip-meta { display: flex; flex-direction: column; gap: 6px; align-self: start; }
.strip-meta .count { font-size: 12px; color: var(--ink3); font-variant-numeric: tabular-nums; margin-top: 8px; }
.strip-view { overflow: hidden; margin-right: calc(-1 * var(--m)); padding: 4px 0 8px; }
.strip-track { display: flex; gap: 16px; will-change: transform; width: max-content; }
.strip-track .shot { width: clamp(220px, 24vw, 420px); aspect-ratio: 16 / 10; flex: none; }
@media (max-width: 760px) { .strip { grid-template-columns: 1fr; } .strip-track .shot { width: 70vw; } }

/* 2. the mosaic */
.mosaic { display: grid; gap: 12px; height: min(78vh, 820px); min-height: 520px; }
.tile { position: relative; overflow: hidden; border-radius: 12px; background: var(--ground); color: inherit; outline: none; }
.tile img { position: absolute; left: 50%; top: 7%; height: calc(93% - 104px); max-width: 88%; width: auto; transform: translateX(-50%); aspect-ratio: 16 / 10; object-fit: cover; object-position: top; border-radius: 6px; box-shadow: 0 0 0 .5px var(--line), var(--e2); }
.tile-meta { position: absolute; left: 0; right: 0; bottom: 0; display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; padding: 20px 22px; background: var(--ground); }
.tile-meta .type { white-space: nowrap; }
.tile:not(.is-on) .tile-meta .type { display: none; }
.tile-meta .line { max-width: 34em; font-size: 15px; line-height: 23px; opacity: 0; max-height: 0; transition: opacity 120ms linear; }
.tile.is-on .tile-meta .line { opacity: 1; max-height: 80px; transition-duration: 40ms; }
.tile:focus-visible { box-shadow: inset 0 0 0 1.5px var(--accent); }
@media (max-width: 760px) { .mosaic { height: auto; } .tile { min-height: 220px; } .tile-meta { flex-direction: column; align-items: flex-start; gap: 4px; } }

/* 3. the rows */
.rows { border-top: .5px solid var(--ink); }
.row { border-bottom: .5px solid var(--line-strong); }
.row-head { width: 100%; display: grid; grid-template-columns: 56px minmax(0, 1fr) auto auto; gap: 16px; align-items: baseline; padding: 22px 0; border: 0; background: none; text-align: left; color: inherit; cursor: pointer; font: inherit; }
.row-no { font-size: 13px; color: var(--ink3); font-variant-numeric: tabular-nums; }
.row-name { font: 450 clamp(30px, 4.2vw, 64px)/1 var(--font); letter-spacing: -0.03em; transition: color 150ms linear; }
.rows.has-open .row:not(.is-open) .row-name { color: var(--faded); }
.row-head:is(:hover, [data-hover]) .row-name { color: var(--ink) !important; }
.row-head:focus-visible { outline: 1.5px solid var(--accent); outline-offset: 2px; }
.row-sign { width: 28px; height: 28px; position: relative; }
.row-sign::before, .row-sign::after { content: ""; position: absolute; left: 6px; right: 6px; top: 13.5px; height: 1px; background: currentColor; transition: transform 300ms var(--tau-ease); }
.row-sign::after { transform: rotate(90deg); }
.row.is-open .row-sign::after { transform: rotate(0deg); }
.row-body { overflow: hidden; height: 0; }
.row-in { display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 16px; padding: 4px 0 32px; }
.row-in .strip-view { grid-column: 2; margin-right: calc(-1 * var(--m)); }
.row-in .line { grid-column: 2; max-width: 46em; margin-bottom: 20px; }
@media (max-width: 760px) { .row-head { grid-template-columns: 32px minmax(0, 1fr) auto; } .row-head .type { display: none; } .row-in { grid-template-columns: 1fr; } .row-in > * { grid-column: 1 !important; } }

/* 4. the chapters */
.chapters { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(24px, 4vw, 72px); }
.ch-side { position: sticky; top: 96px; align-self: start; display: flex; flex-direction: column; gap: 28px; }
.ch-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }
.ch-list button { display: flex; gap: 14px; align-items: baseline; padding: 6px 0; border: 0; background: none; font: inherit; color: var(--faded); text-align: left; cursor: pointer; transition: color 150ms linear; }
.ch-list button span:first-child { font-size: 12px; font-variant-numeric: tabular-nums; width: 20px; }
.ch-list button span:last-child { font: 450 clamp(22px, 2.1vw, 32px)/1.2 var(--font); letter-spacing: -0.02em; }
.ch-list button[aria-current="true"], .ch-list button:is(:hover, [data-hover]) { color: var(--ink); }
.ch-text { display: grid; }
.ch-text > div { grid-area: 1 / 1; display: flex; flex-direction: column; gap: 10px; opacity: 0; transition: opacity 120ms linear; pointer-events: none; }
.ch-text > div.is-on { opacity: 1; transition-duration: 40ms; pointer-events: auto; }
.ch-bar { height: 2px; background: color-mix(in srgb, var(--ink) 12%, transparent); position: relative; }
.ch-bar i { position: absolute; left: 0; top: 0; bottom: 0; background: var(--ink); }
.ch-shots { display: flex; flex-direction: column; gap: 16px; }
.ch-shots .shot { aspect-ratio: 16 / 10; }
.ch-shots .gap { height: 64px; }
@media (max-width: 860px) { .chapters { grid-template-columns: 1fr; } .ch-side { top: 72px; z-index: 2; background: var(--page); padding: 12px 0; } .ch-list, .ch-bar { display: none; } }

/* 5. the stack on scroll */
.stackx { position: relative; }
.card { position: sticky; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: clamp(20px, 3vw, 48px); padding: clamp(20px, 2.4vw, 36px); border-radius: 16px; background: var(--ground); box-shadow: 0 -.5px 0 var(--line), 0 -12px 40px rgb(0 0 0 / .05); transform-origin: 50% 0; margin-bottom: 18vh; will-change: transform; }
.card:last-child { margin-bottom: 0; }
.card-meta { display: flex; flex-direction: column; gap: 12px; }
.card-no { font-size: 13px; color: var(--ink3); font-variant-numeric: tabular-nums; }
.card .shot { aspect-ratio: 16 / 10; }
.card-meta .more { margin-top: auto; }
@media (max-width: 760px) { .card { grid-template-columns: 1fr; } }

/* 6. the map */
.map { position: relative; height: min(80vh, 860px); min-height: 520px; overflow: hidden; border-radius: 16px; background: var(--ground); touch-action: none; user-select: none; -webkit-user-select: none; cursor: grab; outline: none; }
.map.is-held { cursor: grabbing; }
.map:focus-visible { box-shadow: inset 0 0 0 1.5px var(--accent); }
.map-plane { position: absolute; left: 0; top: 0; will-change: transform; }
.cluster { position: absolute; }
.cluster h3 { margin: 0 0 6px; font: 450 64px/1 var(--font); letter-spacing: -0.03em; white-space: nowrap; }
.cluster .type { display: block; margin-bottom: 24px; font-size: 15px; }
.cluster .shot { position: absolute; aspect-ratio: 16 / 10; }
.map-list { position: absolute; left: 16px; top: 16px; display: flex; gap: 2px; padding: 4px; border-radius: 9999px; background: var(--glass); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); box-shadow: 0 0 0 .5px var(--line), var(--e2); z-index: 2; max-width: calc(100% - 32px); overflow-x: auto; scrollbar-width: none; }
.map-list button { height: 32px; padding: 0 12px; border: 0; border-radius: 9999px; background: none; font: 500 13px/1 var(--font); color: var(--ink3); cursor: pointer; white-space: nowrap; }
.map-list button[aria-pressed="true"] { background: color-mix(in srgb, var(--ink) 12%, transparent); color: var(--ink); }
.map-mini { position: absolute; right: 16px; bottom: 16px; z-index: 2; border-radius: 8px; background: var(--glass); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); box-shadow: 0 0 0 .5px var(--line), var(--e2); }
.map-mini i { position: absolute; border-radius: 2px; background: color-mix(in srgb, var(--ink) 22%, transparent); }
.map-mini b { position: absolute; border: 1.5px solid var(--accent); border-radius: 2px; }
.map-hint { position: absolute; left: 20px; bottom: 18px; margin: 0; z-index: 2; }
@media (max-width: 760px) { .map-mini { display: none; } .cluster h3 { font-size: 44px; } }
.pick { width: min(880px, calc(100% - 32px)); }
.pick-dock { flex-wrap: wrap; justify-content: center; border-radius: 22px; max-width: 100%; }