/* ==========================================================================
   sync&sweat case study
   Same world as the record-collection homepage: #111211 room, warm paper
   text, sage accent. Jost for headlines, Manrope for reading, D-DIN for
   labels and numbers (the "machine panel" voice).
   ========================================================================== */

@font-face { font-family: Jost; src: url("assets/fonts/home/Jost.ttf") format("truetype"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: Manrope; src: url("assets/fonts/home/Manrope.ttf") format("truetype"); font-weight: 200 800; font-display: swap; }
@font-face { font-family: "D-DIN"; src: url("assets/fonts/home/D-DIN.woff2") format("woff2"); font-weight: 400; font-display: swap; }

:root {
  --room: #111211;
  --raised: #171917;
  --well: #1d201c;
  --rule: #2a2d28;
  --rule-strong: #3b3f38;
  --text: #eeeae3;
  --body: #c9cbc2;
  --mute: #9ea397;
  --sage: #b9caaa;
  --sage-deep: #7f9270;
  --display: Jost, "Futura", "Century Gothic", sans-serif;
  --read: Manrope, "Helvetica Neue", Arial, sans-serif;
  --panel: "D-DIN", "DIN Alternate", "Bahnschrift", Arial, sans-serif;
  --rail: 248px;
  --pad: clamp(22px, 5vw, 88px);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scrollbar-color: var(--rule-strong) var(--room); }
body { margin: 0; background: var(--room); color: var(--body); font: 400 16.5px/1.7 var(--read); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
h1, h2, h3, p, figure, blockquote, dl, dd, ol, ul { margin: 0; }
ol, ul { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-underline-offset: 0.28em; text-decoration-thickness: 1px; }
::selection { background: var(--sage); color: var(--room); }
:focus-visible { outline: 2px solid var(--sage); outline-offset: 4px; border-radius: 2px; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--room); }
::-webkit-scrollbar-thumb { background: var(--rule-strong); border-radius: 10px; border: 2px solid var(--room); }

.panel { font-family: var(--panel); font-size: 12.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--mute); font-variant-numeric: tabular-nums; }
.plain-panel { font: 14px/1.6 var(--panel); letter-spacing: 0.02em; color: var(--mute); font-variant-numeric: tabular-nums; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.icon { width: 1em; height: 1em; flex: none; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.skip { position: fixed; left: 16px; top: -60px; z-index: 50; padding: 10px 14px; border-radius: 6px; background: var(--text); color: var(--room); font-weight: 600; text-decoration: none; }
.skip:focus { top: 16px; }

/* ---------- shell ---------- */
.shell { display: grid; grid-template-columns: var(--rail) minmax(0, 1fr); min-height: 100vh; }

.rail { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; gap: 36px; padding: 34px 28px 30px; border-right: 1px solid var(--rule); }
.rail .back { display: inline-flex; align-items: center; gap: 10px; width: fit-content; color: var(--text); font-weight: 600; font-size: 14px; text-decoration: none; }
.rail .back .icon { transition: transform 0.3s var(--ease); }
.rail .back:hover .icon { transform: translateX(-4px); }
.rail .who strong { display: block; font: 500 17px/1.2 var(--display); color: var(--text); }
.rail .who span { display: block; margin-top: 6px; font-size: 13px; line-height: 1.4; color: var(--mute); }
.chapters { margin-top: auto; margin-bottom: auto; display: grid; }
.chapters a { display: grid; grid-template-columns: 30px 1fr; align-items: baseline; padding: 11px 0; border-top: 1px solid var(--rule); color: var(--mute); font-size: 14px; text-decoration: none; transition: color 0.25s, border-color 0.25s; }
.chapters a:last-child { border-bottom: 1px solid var(--rule); }
.chapters a span { font: 12px var(--panel); letter-spacing: 0.06em; }
.chapters a:hover { color: var(--text); }
.chapters a.is-current { color: var(--text); border-top-color: var(--sage); }
.chapters a.is-current span { color: var(--sage); }
.rail .source { display: inline-flex; gap: 8px; align-items: center; font-size: 13px; color: var(--mute); text-decoration: none; }
.rail .source:hover { color: var(--text); }

.main { min-width: 0; }
.wrap { width: min(100%, 1180px); margin-inline: auto; padding-inline: var(--pad); }

/* ---------- cover ---------- */
.cover { position: relative; overflow: hidden; border-bottom: 1px solid var(--rule); }
.cover .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr); gap: clamp(28px, 4vw, 64px); align-items: center; min-height: min(860px, 100vh); padding-block: 72px 64px; }
.cover h1 { font: 600 clamp(64px, 8.4vw, 128px)/0.86 var(--display); letter-spacing: -0.035em; color: var(--text); }
.cover h1 span { display: block; }
.cover h1 i { font-style: normal; color: var(--sage); }
.cover .statement { margin-top: 30px; max-width: 26em; font-size: clamp(18px, 1.5vw, 21px); line-height: 1.5; color: var(--text); }
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 28px; margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--rule); max-width: 34em; }
.facts dt { margin-bottom: 6px; }
.facts dd { color: var(--text); font-size: 15px; line-height: 1.45; }

.stage { position: relative; height: clamp(420px, 44vw, 600px); }
.stage::before { content: ""; position: absolute; left: 50%; top: 52%; width: 88%; aspect-ratio: 1; transform: translate(-50%, -50%); border-radius: 50%;
  background: repeating-radial-gradient(circle, rgba(185, 202, 170, 0.07) 0 1px, transparent 1px 7px); -webkit-mask: radial-gradient(circle, #000 20%, transparent 70%); mask: radial-gradient(circle, #000 20%, transparent 70%); }
.stage img { position: absolute; top: 50%; left: 50%; width: clamp(150px, 15vw, 215px); height: auto; filter: drop-shadow(0 28px 36px rgba(0, 0, 0, 0.6)); transition: transform 1.1s var(--ease); }
.stage .s-back-l { transform: translate(-128%, -46%) rotate(-7deg); }
.stage .s-back-r { transform: translate(28%, -46%) rotate(7deg); }
.stage .s-front { transform: translate(-50%, -52%); z-index: 2; }
.is-entering .stage .s-back-l, .is-entering .stage .s-back-r { transform: translate(-50%, -48%) rotate(0deg); }

/* ---------- section scaffolding ---------- */
.section { border-bottom: 1px solid var(--rule); padding-block: clamp(88px, 11vw, 150px); }
.section.band { background: var(--raised); }
.section h2 { max-width: 17em; font: 500 clamp(34px, 3.8vw, 56px)/1.04 var(--display); letter-spacing: -0.025em; color: var(--text); text-wrap: balance; }
.two { display: grid; grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr); gap: clamp(28px, 5vw, 80px); margin-top: 48px; }
.lede { font-size: clamp(18px, 1.45vw, 20.5px); line-height: 1.55; color: var(--text); }
.prose p { max-width: 62ch; }
.prose p + p { margin-top: 1em; }
.block { margin-top: clamp(64px, 8vw, 104px); }
.block-head { display: flex; justify-content: space-between; align-items: baseline; gap: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--rule); }
.block-head h2.h3 { margin: 0; }
.block-head h3, .block-head .h3 { font: 500 22px/1.25 var(--display); color: var(--text); letter-spacing: -0.01em; }
figcaption { margin-top: 14px; font-size: 14px; line-height: 1.55; color: var(--mute); max-width: 64ch; }
figcaption strong { color: var(--text); font-weight: 600; }
.shot { border-radius: 10px; overflow: hidden; box-shadow: 0 0 0 1px var(--rule), 0 24px 48px -28px rgba(0, 0, 0, 0.8); background: var(--well); }
.shot img { width: 100%; height: auto; }

/* ---------- summary ---------- */
.summary { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--rule-strong); border-bottom: 1px solid var(--rule); }
.summary > div { padding: 24px 24px 28px 0; }
.summary > div + div { padding-left: 24px; border-left: 1px solid var(--rule); }
.summary p { margin-top: 12px; color: var(--text); font-size: 15.5px; line-height: 1.55; }
.summary b { color: var(--sage); font-weight: 600; }

.credits li { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.4fr) auto; gap: 28px; align-items: baseline; padding: 22px 0; border-bottom: 1px solid var(--rule); }
.credits h3 { font: 500 21px/1.25 var(--display); color: var(--text); }
.credits p { max-width: 58ch; }
.credits a { display: inline-flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--mute); text-decoration: none; white-space: nowrap; }
.credits a:hover { color: var(--sage); }
.stack { margin-top: 22px; color: var(--mute); }
.stack span + span::before { content: " / "; color: var(--rule-strong); }

/* ---------- problem ---------- */
.question { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 24px; margin-top: 72px; padding-block: 30px; border-block: 1px solid var(--rule); }
.question p { font: 400 clamp(22px, 2.1vw, 30px)/1.3 var(--display); color: var(--text); letter-spacing: -0.01em; max-width: 30em; }

/* ---------- pipeline diagram ---------- */
.pipeline { margin-top: 56px; overflow-x: auto; padding-bottom: 6px; }
.pipeline svg { min-width: 920px; width: 100%; height: auto; }
.swipe { display: none; }
.pipeline .stage-t { font: 400 12.5px var(--panel); letter-spacing: 0.08em; fill: var(--mute); text-transform: uppercase; }
.pipeline .stage-s { font: 500 16px var(--display); fill: var(--text); }
.pipeline .node rect { fill: var(--well); stroke: var(--rule-strong); stroke-width: 1; }
.pipeline .node.out rect { fill: #1f251c; stroke: var(--sage-deep); }
.pipeline .n1 { font: 600 14.5px var(--read); fill: var(--text); }
.pipeline .n2 { font: 400 12.5px var(--read); fill: var(--mute); }
.pipeline .wire { fill: none; stroke: #5d6258; stroke-width: 1.4; }
.pipeline .lane { fill: none; stroke: var(--rule); stroke-dasharray: 2 6; }

/* ---------- dataset ledger ---------- */
.ledger { margin-top: 20px; }
.ledger li { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 28px; align-items: center; padding: 20px 0; border-bottom: 1px solid var(--rule); }
.ledger .n { font: 400 44px/1 var(--panel); color: var(--text); font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.ledger .n small { font-size: 22px; color: var(--mute); }
.ledger strong { display: block; color: var(--text); font-weight: 600; }
.ledger p { color: var(--body); font-size: 15px; }
.meter { position: relative; height: 6px; margin-top: 12px; max-width: 360px; border-radius: 6px; background: var(--rule); overflow: hidden; }
.meter i { position: absolute; inset: 0 auto 0 0; width: 43.75%; border-radius: 6px; background: var(--sage); }
.note { margin-top: 28px; max-width: 64ch; color: var(--text); }

.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 28px; }

/* ---------- insight ---------- */
.finding { display: grid; grid-template-columns: minmax(0, 0.62fr) minmax(0, 1.38fr); gap: clamp(24px, 4vw, 56px); align-items: center; margin-top: 56px; }
.finding + .finding { margin-top: 64px; }
.readout .v { display: block; margin-top: 10px; font: 400 clamp(46px, 4.6vw, 64px)/1 var(--panel); color: var(--text); font-variant-numeric: tabular-nums; }
.readout .v.good { color: var(--sage); }
.readout p { margin-top: 14px; font-size: 15.5px; }
.readout p strong { color: var(--text); font-weight: 600; }

.quote { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 24px; margin-top: clamp(64px, 8vw, 104px); }
.quote blockquote { font: 400 clamp(24px, 2.4vw, 34px)/1.28 var(--display); color: var(--text); letter-spacing: -0.012em; max-width: 26em; text-wrap: pretty; }
.quote blockquote::before { content: "\201C"; color: var(--sage); margin-left: -0.45em; }
.quote blockquote::after { content: "\201D"; color: var(--sage); }
.quote figcaption { margin-top: 16px; }

.compare { display: grid; grid-template-columns: 180px 1fr 1fr; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.compare > * { padding: 24px 24px 26px 0; }
.compare > div + div { padding-left: 24px; border-left: 1px solid var(--rule); }
.compare h4 { margin: 0 0 8px; font: 500 19px/1.3 var(--display); color: var(--text); }
.compare .on h4 { color: var(--sage); }

.shift { display: grid; grid-template-columns: minmax(0, 1fr) 64px minmax(0, 1fr); align-items: stretch; margin-top: 20px; }
.shift > div { padding: 26px 28px; border-radius: 10px; }
.shift .from { background: var(--well); }
.shift .from p { color: var(--mute); text-decoration: line-through; text-decoration-color: rgba(158, 163, 151, 0.5); }
.shift .to { background: #1f251c; box-shadow: inset 0 0 0 1px var(--sage-deep); }
.shift .to p { color: var(--text); }
.shift p { margin-top: 10px; font: 500 20px/1.35 var(--display); }
.shift > .arrow { padding: 0; display: flex; align-items: center; justify-content: center; color: var(--sage); }
.shift .arrow .icon { width: 26px; height: 26px; }
.shift .from.plain p { text-decoration: none; color: var(--body); }

.inputs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 20px; border-top: 1px solid var(--rule); }
.inputs li { padding: 22px 22px 0 0; }
.inputs li + li { padding-left: 22px; border-left: 1px solid var(--rule); }
.inputs strong { display: block; margin-top: 8px; font: 500 18px/1.3 var(--display); color: var(--text); }
.inputs p { margin-top: 6px; font-size: 14.5px; line-height: 1.55; }

/* ---------- recommendation steps ---------- */
.steps { display: grid; grid-template-columns: 1fr 44px 1fr 44px 1fr 44px 1fr; margin-top: 56px; }
.step { position: relative; padding-top: 34px; }
.step::before { content: ""; position: absolute; left: 0; right: 0; top: 11px; height: 1px; background: var(--rule-strong); }
.step .dot { position: absolute; left: 0; top: 0; width: 23px; height: 23px; border-radius: 50%; display: grid; place-items: center; background: var(--room); box-shadow: inset 0 0 0 1px var(--sage); color: var(--sage); font: 12px/1 var(--panel); }
.join { position: relative; color: var(--sage); }
.join::before { content: ""; position: absolute; left: 0; right: 0; top: 11px; height: 1px; background: var(--rule-strong); }
.join .icon { position: absolute; left: 50%; top: 11px; transform: translate(-50%, -50%); width: 20px; height: 20px; padding: 3px; background: var(--room); box-sizing: content-box; }
.step h3 { font: 500 20px/1.25 var(--display); color: var(--text); }
.step p { margin-top: 8px; font-size: 15px; line-height: 1.6; }

.zones { margin-top: 72px; }
.zone-bar { display: grid; grid-template-columns: repeat(5, 1fr); gap: 4px; margin-top: 20px; }
.zone-bar li { padding-top: 14px; }
.zone-bar li::before { content: ""; display: block; height: 10px; margin-bottom: 14px; border-radius: 3px; background: var(--sage); opacity: var(--o); }
.zone-bar strong { display: block; color: var(--text); font-weight: 600; font-size: 15px; }
.zone-bar span { display: block; margin-top: 2px; font: 14px var(--panel); color: var(--mute); letter-spacing: 0.04em; font-variant-numeric: tabular-nums; }

/* ---------- product screens ---------- */
.loop { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; margin-top: 40px; color: var(--text); font: 500 17px var(--display); }
.loop .icon { color: var(--sage); font-size: 18px; }
.phase { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 24px; margin-top: 64px; padding-top: 22px; border-top: 1px solid var(--rule); }
.phase h3 { font: 500 20px/1.3 var(--display); color: var(--text); }
.phase > div > p { margin-top: 8px; font-size: 14.5px; line-height: 1.55; color: var(--mute); }
.screens { display: grid; grid-template-columns: repeat(3, minmax(0, 200px)); gap: clamp(20px, 3vw, 44px); }
.screen img { width: 100%; height: auto; filter: drop-shadow(0 20px 26px rgba(0, 0, 0, 0.55)); }
.screen figcaption { margin-top: 18px; }
.screen figcaption strong { display: block; margin-bottom: 4px; font-size: 15px; }

.tools li { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 24px; padding: 20px 0; border-bottom: 1px solid var(--rule); }
.tools h4 { margin: 0; font: 500 18px/1.3 var(--display); color: var(--text); }

/* ---------- validation ---------- */
.themes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(20px, 3vw, 44px); margin-top: 20px; }
.themes li { padding-top: 20px; border-top: 1px solid var(--rule-strong); }
.themes strong { display: block; font: 500 20px/1.3 var(--display); color: var(--text); }
.themes p { margin-top: 10px; font-size: 15px; }
.footnote { margin-top: 56px; }

.next { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: end; padding-block: 72px 88px; }
.next a.big { display: block; width: fit-content; font: 500 clamp(34px, 4vw, 56px)/1 var(--display); letter-spacing: -0.02em; color: var(--text); text-decoration: none; }
.next a.big .icon { display: inline-block; vertical-align: -0.08em; margin-left: 12px; font-size: 0.7em; color: var(--sage); transition: transform 0.35s var(--ease); }
.next a.big:hover .icon { transform: translate(5px, -5px); }
.next p { margin-bottom: 12px; }
.next .home { color: var(--mute); font-size: 14px; }
.next .home:hover { color: var(--text); }

/* ---------- responsive ---------- */
@media (max-width: 1180px) {
  .stage img { width: clamp(130px, 14vw, 170px); }
  .steps { grid-template-columns: 1fr 44px 1fr; row-gap: 40px; }
  .steps .join:nth-of-type(4) { display: none; }
  .summary, .inputs { grid-template-columns: 1fr 1fr; }
  .summary > div:nth-child(3), .inputs li:nth-child(3) { padding-left: 0; border-left: 0; }
  .summary > div:nth-child(n + 3) { border-top: 1px solid var(--rule); }
  .inputs li:nth-child(n + 3) { margin-top: 20px; border-top: 1px solid var(--rule); }
}

@media (max-width: 960px) {
  .shell { display: block; }
  .rail { position: sticky; z-index: 20; height: auto; flex-direction: row; flex-wrap: wrap; align-items: center; gap: 10px 18px; padding: 12px 18px; background: rgba(17, 18, 17, 0.94); backdrop-filter: blur(10px); border-right: 0; border-bottom: 1px solid var(--rule); }
  .rail .who, .rail .source { display: none; }
  .chapters { margin: 0; width: 100%; display: flex; gap: 18px; overflow-x: auto; scrollbar-width: none; }
  .chapters a, .chapters a:last-child { display: flex; gap: 6px; padding: 4px 0 6px; border: 0; border-bottom: 1px solid transparent; white-space: nowrap; }
  .chapters a.is-current { border-bottom-color: var(--sage); }
  .cover .wrap { grid-template-columns: 1fr; min-height: 0; padding-block: 48px 40px; }
  .stage { height: 380px; order: -1; }
  .swipe { display: flex; align-items: center; gap: 8px; margin-top: 40px; }
  .pipeline { margin-top: 12px; }
  .two, .finding, .pair { grid-template-columns: 1fr; }
  .question, .quote, .phase, .tools li { grid-template-columns: 1fr; gap: 12px; }
  .compare { grid-template-columns: 1fr; }
  .compare > div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule); }
  .credits li { grid-template-columns: 1fr; gap: 8px; }
  .shift { grid-template-columns: 1fr; }
  .shift .arrow { height: 48px; transform: rotate(90deg); }
  .themes { grid-template-columns: 1fr; }
  .next { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .summary, .inputs { grid-template-columns: 1fr; }
  .summary > div, .summary > div + div, .inputs li, .inputs li + li { padding-left: 0; border-left: 0; }
  .summary > div + div, .inputs li + li { border-top: 1px solid var(--rule); }
  .facts { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .steps .join { display: none; }
  .ledger li { grid-template-columns: 1fr; gap: 8px; }
  .zone-bar { grid-template-columns: 1fr; gap: 0; }
  .zone-bar li { display: grid; grid-template-columns: 70px 1fr auto; align-items: center; gap: 14px; padding: 10px 0; border-bottom: 1px solid var(--rule); }
  .zone-bar li::before { margin: 0; }
  .zone-bar span { margin: 0; }
  .screens { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 16px; }
  .stage { height: 330px; }
  .stage img { width: 138px; }
}


/* ---------- interaction video ---------- */
.demo { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: clamp(32px, 6vw, 96px); align-items: center; margin-top: 64px; padding: clamp(28px, 4vw, 56px); border-radius: 16px; background: var(--raised); box-shadow: inset 0 0 0 1px var(--rule); }
.handset { position: relative; width: clamp(220px, 22vw, 290px); aspect-ratio: 9 / 19.5; border-radius: 38px; padding: 9px; background: linear-gradient(145deg, #2b2e29, #0c0d0c); box-shadow: 0 0 0 1px #3b3f38, 0 34px 60px -24px rgba(0, 0, 0, 0.85); }
.handset video { width: 100%; height: 100%; object-fit: cover; border-radius: 30px; background: #000; display: block; }
.demo-toggle { position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%); display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px 9px 12px; border: 0; border-radius: 999px; background: rgba(17, 18, 17, 0.78); backdrop-filter: blur(8px); color: var(--text); font: 600 13px var(--read); cursor: pointer; transition: opacity 0.3s, background 0.2s; }
.demo-toggle:hover { background: rgba(17, 18, 17, 0.92); }
.demo-toggle .icon { width: 16px; height: 16px; }
.demo-toggle .i-play { fill: currentColor; stroke: none; }
.demo-toggle .i-pause { display: none; }
.demo.is-playing .demo-toggle .i-play { display: none; }
.demo.is-playing .demo-toggle .i-pause { display: block; }
.demo.is-playing .demo-toggle { opacity: 0; }
.handset:hover .demo-toggle, .demo-toggle:focus-visible { opacity: 1; }
.demo figcaption { margin: 0; max-width: 46ch; }
.demo h3 { font: 500 clamp(26px, 2.4vw, 34px)/1.1 var(--display); color: var(--text); letter-spacing: -0.015em; }
.demo figcaption > p { margin-top: 14px; font-size: 16px; line-height: 1.6; color: var(--body); }
.demo-chapters { margin-top: 28px; border-top: 1px solid var(--rule); }
.demo-chapters li { display: grid; grid-template-columns: 100px 1fr; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--rule); color: var(--text); font-size: 15px; }
@media (max-width: 960px) {
  .demo { grid-template-columns: 1fr; justify-items: center; }
  .demo figcaption { max-width: none; width: 100%; }
}
@media (hover: none) { .demo.is-playing .demo-toggle { opacity: 0.85; } }

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

/* ---------- product decisions & metrics (all case studies) ---------- */
.pdm-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 20px; margin-top: 20px; }
.pdm-dec { display: grid; gap: 3px; }
.pdm-dec li { padding: 20px 22px; background: var(--well); }
.pdm-dec strong { display: block; margin: 8px 0 6px; font: 500 19px/1.3 var(--display); color: var(--text); }
.pdm-dec p { font-size: 15px; line-height: 1.6; }
.pdm-dec em { font-style: normal; color: var(--sage); }
.pdm-met { display: flex; flex-direction: column; gap: 16px; padding: 22px 24px; border-radius: 12px; background: var(--raised); box-shadow: inset 0 0 0 1px var(--rule); }
.pdm-met > div { padding-bottom: 16px; border-bottom: 1px solid var(--rule); }
.pdm-met .ns strong { display: block; margin: 8px 0 6px; font: 500 22px/1.25 var(--display); color: var(--sage); }
.pdm-met .ns p { font-size: 15px; }
.pdm-met ul { margin-top: 8px; }
.pdm-met li { position: relative; padding: 4px 0 4px 16px; font-size: 15px; line-height: 1.5; color: var(--text); }
.pdm-met li::before { content: ""; position: absolute; left: 0; top: 13px; width: 8px; height: 1px; background: var(--sage); }
.pdm-note { margin-top: auto; font-size: 13px; line-height: 1.55; color: var(--mute); }
@media (max-width: 960px) { .pdm-grid { grid-template-columns: 1fr; } }

/* ---------- cover titles echo each record sleeve on the homepage ---------- */
@font-face { font-family: "Bricolage"; src: url("assets/fonts/home/Bricolage-800.woff2") format("woff2"); font-weight: 800; font-display: swap; }
@font-face { font-family: "Fraunces"; src: url("assets/fonts/home/Fraunces-500i.woff2") format("woff2"); font-weight: 500; font-style: italic; font-display: swap; }
@font-face { font-family: "Barlow Condensed"; src: url("assets/fonts/home/BarlowCond-800i.woff2") format("woff2"); font-weight: 800; font-style: italic; font-display: swap; }
@font-face { font-family: "Instrument Serif"; src: url("assets/fonts/home/InstrumentSerif-i.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
body.food .cover h1 { font: 800 clamp(64px, 8.4vw, 128px)/0.84 Bricolage, sans-serif; letter-spacing: -0.04em; text-transform: lowercase; }
body.garden .cover h1 { font: italic 500 clamp(58px, 7.6vw, 116px)/0.92 Fraunces, Georgia, serif; letter-spacing: -0.02em; }
body.sync .cover h1 { font: italic 800 clamp(72px, 9.6vw, 146px)/0.82 "Barlow Condensed", sans-serif; letter-spacing: -0.01em; text-transform: uppercase; }
body.dl .cover h1 { font: italic 400 clamp(68px, 9vw, 138px)/0.86 "Instrument Serif", Georgia, serif; letter-spacing: -0.02em; }