:root {
  --bg: oklch(0.239 0.058 256.7);
  --surface: oklch(0.274 0.060 253.8);
  --fg: oklch(0.978 0.006 255.5);
  --muted: oklch(0.729 0.032 254.4);
  --border: oklch(0.373 0.059 253.0);
  --accent: oklch(0.827 0.171 80.5);
  --ink: oklch(0.19 0.04 256);
  --paper: oklch(0.972 0.006 255);
  --paper-muted: oklch(0.46 0.032 255);
  --paper-border: oklch(0.84 0.018 255);
  --success: oklch(0.59 0.13 163);
  --warn: oklch(0.61 0.14 70);
  --font-display: "DIN Alternate", "Bahnschrift", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Mono", monospace;
  --page: min(1200px, calc(100vw - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 16px/1.75 var(--font-body); overflow-x: hidden; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.shell { width: var(--page); margin-inline: auto; }
.mono { font: 550 12px/1.5 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
.reveal.visible { opacity: 1; transform: none; }

.site-header { position: sticky; top: 0; z-index: 30; height: 72px; background: color-mix(in oklch, var(--bg) 94%, transparent); color: var(--fg); border-bottom: 1px solid color-mix(in oklch, var(--border) 68%, transparent); backdrop-filter: blur(14px); }
.nav { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { min-height: 44px; display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand img { width: 38px; height: 38px; object-fit: contain; }
.brand span { font: 600 19px/1 var(--font-display); letter-spacing: .08em; }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { min-height: 44px; display: inline-flex; align-items: center; color: var(--muted); text-decoration: none; font-size: 13px; font-weight: 550; letter-spacing: .02em; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--fg); }
.nav-links a[aria-current="page"] { box-shadow: inset 0 -1px var(--accent); }
.nav-entry { color: var(--fg) !important; box-shadow: inset 0 -1px var(--fg); }

.home-hero { min-height: calc(100svh - 72px); display: grid; align-items: center; background: var(--bg); color: var(--fg); border-bottom: 1px solid var(--border); overflow: hidden; }
.home-hero-grid { padding: 64px 0 56px; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(390px, .8fr); gap: 16px; align-items: center; }
.hero-kicker { margin: 0 0 18px; color: var(--accent); font-size: 20px; font-weight: 600; letter-spacing: .04em; }
.home-hero h1 { max-width: 650px; margin: 0; font: 600 clamp(44px, 4.1vw, 56px)/1.32 var(--font-display); letter-spacing: 0; }
.hero-copy { max-width: 700px; margin: 22px 0 0; color: var(--muted); font-size: 18px; line-height: 1.75; }
.actions { display: flex; align-items: center; gap: 22px; margin-top: 28px; }
.primary-action { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 0 22px; border: 1px solid var(--accent); border-radius: 2px; background: var(--accent); color: var(--ink); text-decoration: none; font-weight: 600; letter-spacing: .02em; transition: transform .18s ease, background .18s ease; }
.primary-action:hover { background: oklch(0.76 0.17 80.5); transform: translateY(-2px); }
.primary-action:active { transform: translateY(1px); }
.text-link { min-height: 44px; display: inline-flex; align-items: center; color: inherit; text-underline-offset: 6px; font-weight: 550; }

.hero-device-visual { min-height: 640px; margin: 0; display: grid; place-items: center; align-content: center; }
.hero-device-visual img { width: auto; max-width: 100%; height: min(66svh, 650px); display: block; object-fit: contain; filter: drop-shadow(0 30px 44px color-mix(in oklch, var(--ink) 58%, transparent)); }
.hero-device-visual .visual-caption { max-width: none; text-align: center; }

.product-window { border: 1px solid var(--border); background: var(--surface); box-shadow: 0 34px 80px color-mix(in oklch, var(--ink) 62%, transparent); transform: rotate(.3deg); }
.window-bar { min-height: 46px; display: flex; align-items: center; justify-content: space-between; padding: 0 16px; border-bottom: 1px solid var(--border); color: var(--muted); }
.window-bar strong { color: var(--fg); font: 600 13px/1 var(--font-display); letter-spacing: .04em; }
.live-mark { display: inline-flex; align-items: center; gap: 7px; }
.live-mark::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--success); }
.order-body { padding: 28px; }
.order-head { display: flex; justify-content: space-between; gap: 24px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.order-head p { margin: 0; color: var(--muted); font-size: 13px; }
.order-head h2 { margin: 5px 0 0; font: 600 28px/1.4 var(--font-display); }
.order-amount { text-align: right; }
.order-amount strong { display: block; color: var(--fg); font: 600 26px/1.3 var(--font-display); }
.order-amount span { color: var(--muted); font-size: 12px; }
.order-progress { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 28px; }
.progress-step { position: relative; padding-top: 24px; color: var(--muted); font-size: 12px; }
.progress-step::before { content: ""; position: absolute; top: 6px; left: 0; right: 0; height: 1px; background: var(--border); }
.progress-step::after { content: ""; position: absolute; top: 2px; left: 0; width: 9px; height: 9px; border-radius: 50%; border: 1px solid var(--muted); background: var(--surface); }
.progress-step.done { color: var(--fg); }
.progress-step.done::before, .progress-step.done::after { background: var(--accent); border-color: var(--accent); }
.order-meta { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 28px; background: var(--border); border: 1px solid var(--border); }
.order-meta div { min-height: 86px; padding: 14px; background: var(--bg); }
.order-meta span { display: block; color: var(--muted); font-size: 11px; }
.order-meta strong { display: block; margin-top: 6px; color: var(--fg); font-size: 14px; }
.visual-caption { margin: 14px 0 0; color: var(--muted); font-size: 12px; }

.status-band { background: var(--bg); color: var(--fg); border-bottom: 1px solid var(--border); }
.status-grid { display: grid; grid-template-columns: 1.15fr repeat(3, 1fr); }
.status-cell { min-height: 118px; padding: 25px 24px; border-right: 1px solid var(--border); }
.status-cell:first-child { padding-left: 0; }
.status-cell:last-child { border-right: 0; }
.status-cell span { display: block; color: var(--muted); font-size: 12px; }
.status-cell strong { display: block; margin-top: 8px; font: 600 17px/1.45 var(--font-display); }
.status-cell .pending { color: var(--accent); }

.home-section { padding: 96px 0; }
.section-heading { display: grid; grid-template-columns: .7fr 1.3fr; gap: 70px; align-items: start; margin-bottom: 52px; }
.section-heading .mono { margin: 8px 0 0; color: var(--warn); }
.section-heading h2 { max-width: 760px; margin: 0; font: 600 clamp(32px, 4.2vw, 48px)/1.36 var(--font-display); letter-spacing: 0; }
.section-heading p { max-width: 62ch; margin: 18px 0 0; color: var(--paper-muted); }
.comparison { border-top: 1px solid var(--paper-border); }
.comparison-row { display: grid; grid-template-columns: 180px 1fr 1fr; gap: 36px; padding: 25px 0; border-bottom: 1px solid var(--paper-border); }
.comparison-row > strong { font: 600 18px/1.5 var(--font-display); }
.comparison-row div { color: var(--paper-muted); }
.comparison-row div strong { display: block; margin-bottom: 5px; color: var(--ink); font-size: 14px; }
.flow-strip { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--paper-border); border-bottom: 1px solid var(--paper-border); }
.flow-item { min-height: 190px; padding: 28px 24px; border-right: 1px solid var(--paper-border); }
.flow-item:first-child { padding-left: 0; }
.flow-item:last-child { border-right: 0; }
.flow-item small { color: var(--warn); }
.flow-item h3 { margin: 34px 0 8px; font: 600 22px/1.45 var(--font-display); }
.flow-item p { margin: 0; color: var(--paper-muted); font-size: 14px; }
.application-line { display: grid; grid-template-columns: 1.2fr .8fr; gap: 76px; align-items: end; padding: 52px 0; border-top: 1px solid var(--paper-border); border-bottom: 1px solid var(--paper-border); }
.application-line h3 { margin: 0; font: 600 clamp(30px, 4vw, 46px)/1.36 var(--font-display); }
.application-line p { max-width: 58ch; margin: 16px 0 0; color: var(--paper-muted); }
.application-aside { justify-self: end; }
.application-aside .mono { color: var(--warn); }
.application-aside a { display: inline-block; margin-top: 16px; text-underline-offset: 5px; }

.compact-cta { padding: 64px 0; background: var(--bg); color: var(--fg); border-top: 1px solid var(--border); }
.compact-cta .shell { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.compact-cta h2 { margin: 0; font: 600 clamp(28px, 4vw, 42px)/1.4 var(--font-display); }
.compact-cta p { margin: 10px 0 0; color: var(--muted); }

.doc-hero { background: var(--bg); color: var(--fg); border-bottom: 1px solid var(--border); }
.doc-hero-inner { padding: 72px 0 58px; display: grid; grid-template-columns: .72fr 1.28fr; gap: 74px; }
.breadcrumbs { margin: 5px 0 0; color: var(--muted); }
.doc-hero h1 { max-width: 760px; margin: 0; font: 600 clamp(38px, 5vw, 56px)/1.36 var(--font-display); letter-spacing: 0; }
.doc-hero p { max-width: 64ch; margin: 18px 0 0; color: var(--muted); }
.doc-layout { display: grid; grid-template-columns: 230px minmax(0, 760px); gap: 82px; padding: 72px 0 100px; align-items: start; }
.toc { position: sticky; top: 104px; border-top: 1px solid var(--paper-border); }
.toc a { min-height: 46px; display: flex; align-items: center; border-bottom: 1px solid var(--paper-border); color: var(--paper-muted); text-decoration: none; font-size: 13px; }
.toc a:hover { color: var(--ink); }
.doc-content > section { padding: 0 0 66px; scroll-margin-top: 104px; }
.doc-content > section + section { padding-top: 66px; border-top: 1px solid var(--paper-border); }
.doc-content h2 { margin: 0; font: 600 clamp(27px, 3.2vw, 36px)/1.4 var(--font-display); }
.doc-content h3 { margin: 34px 0 10px; font: 600 21px/1.5 var(--font-display); }
.doc-content p { max-width: 68ch; margin: 16px 0 0; color: var(--paper-muted); }
.doc-content ul { margin: 18px 0 0; padding-left: 20px; color: var(--paper-muted); }
.info-table { width: 100%; margin-top: 30px; border-collapse: collapse; }
.info-table th, .info-table td { padding: 17px 14px; border-top: 1px solid var(--paper-border); text-align: left; vertical-align: top; }
.info-table th { width: 26%; font-weight: 600; }
.info-table td { color: var(--paper-muted); }
.info-table tr:last-child th, .info-table tr:last-child td { border-bottom: 1px solid var(--paper-border); }
.status-note { margin-top: 28px; padding: 20px 22px; border: 1px solid var(--paper-border); background: oklch(0.94 0.015 79); color: var(--ink); }
.status-note strong { display: block; margin-bottom: 5px; }
.status-note p { margin: 0; color: var(--paper-muted); }
.timeline { margin-top: 30px; border-top: 1px solid var(--paper-border); }
.timeline-row { display: grid; grid-template-columns: 72px 180px 1fr; gap: 26px; padding: 22px 0; border-bottom: 1px solid var(--paper-border); }
.timeline-row .mono { color: var(--warn); }
.timeline-row strong { font: 600 18px/1.5 var(--font-display); }
.timeline-row p { margin: 0; }
.flow-demo { margin-top: 34px; overflow: hidden; background: var(--bg); color: var(--fg); border: 1px solid var(--border); }
.flow-demo-bar { min-height: 60px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 8px 18px; border-bottom: 1px solid var(--border); }
.flow-mode { display: flex; gap: 4px; }
.flow-mode button, .flow-replay { min-height: 44px; padding: 0 15px; border: 1px solid transparent; background: transparent; color: var(--muted); font: 550 12px/1 var(--font-body); letter-spacing: .02em; cursor: pointer; }
.flow-mode button:hover, .flow-replay:hover { color: var(--fg); border-color: var(--border); }
.flow-mode button[aria-pressed="true"] { background: var(--fg); color: var(--ink); }
.flow-stage { position: relative; height: 390px; margin: 0 22px; overflow: hidden; }
.flow-track { position: absolute; z-index: 0; height: 1px; background: var(--border); }
.flow-track-left { top: 43%; left: 14%; width: 36%; }
.flow-track-right { top: 43%; left: 50%; width: 36%; }
.flow-track-dispute { top: 43%; left: 50%; width: 1px; height: 39%; }
.flow-track::after { content: ""; position: absolute; inset: -1px 0 auto; height: 3px; background: var(--fg); transform: scaleX(0); transform-origin: left; transition: transform .55s ease; }
.flow-track-dispute::after { inset: 0 -1px; width: 3px; height: 100%; transform: scaleY(0); transform-origin: top; }
.flow-demo[data-phase="locked"] .flow-track-left::after, .flow-demo[data-phase="delivering"] .flow-track-left::after, .flow-demo[data-phase="released"] .flow-track-left::after, .flow-demo[data-phase="disputed"] .flow-track-left::after, .flow-demo[data-phase="voting"] .flow-track-left::after, .flow-demo[data-phase="refunded"] .flow-track-left::after { transform: scaleX(1); }
.flow-demo[data-phase="released"] .flow-track-right::after { transform: scaleX(1); }
.flow-demo[data-phase="disputed"] .flow-track-dispute::after, .flow-demo[data-phase="voting"] .flow-track-dispute::after, .flow-demo[data-phase="refunded"] .flow-track-dispute::after { transform: scaleY(1); }
.flow-node { position: absolute; z-index: 2; width: 150px; min-height: 106px; padding: 16px; border: 1px solid var(--border); background: var(--bg); transition: border-color .3s ease, background .3s ease, transform .3s ease; }
.flow-node span, .flow-node small { display: block; color: var(--muted); font-size: 10px; letter-spacing: .04em; }
.flow-node strong { display: block; margin: 7px 0 5px; font: 600 15px/1.45 var(--font-display); }
.flow-payer { top: calc(43% - 132px); left: 0; }
.flow-contract { top: calc(43% - 132px); left: 50%; transform: translateX(-50%); }
.flow-payee { top: calc(43% - 132px); right: 0; }
.flow-arbitration { bottom: 16px; left: 50%; transform: translateX(-50%); }
.flow-node.is-active { border-color: var(--fg); background: var(--surface); }
.flow-contract.is-active, .flow-arbitration.is-active { transform: translateX(-50%) translateY(-3px); }
.fund-marker { position: absolute; z-index: 5; top: 43%; left: 75px; width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: var(--accent); color: var(--ink); box-shadow: 0 8px 22px color-mix(in oklch, var(--ink) 48%, transparent); transform: translate(-50%, -50%); transition: left .82s cubic-bezier(.22,.8,.2,1), top .82s cubic-bezier(.22,.8,.2,1); }
.fund-marker span { font: 600 9px/1 var(--font-mono); letter-spacing: .03em; }
.flow-demo[data-fund="contract"] .fund-marker { left: 50%; }
.flow-demo[data-fund="payee"] .fund-marker { left: calc(100% - 75px); }
.flow-demo[data-fund="payer"] .fund-marker { left: 75px; }
.result-signal { position: absolute; z-index: 4; left: 50%; top: 78%; padding: 5px 8px; border: 1px solid var(--fg); background: var(--bg); color: var(--fg); font: 550 9px/1 var(--font-mono); letter-spacing: .06em; opacity: 0; transform: translate(-50%, -50%); transition: top .65s ease, opacity .25s ease; }
.flow-demo[data-phase="voting"] .result-signal { opacity: 1; }
.flow-demo[data-phase="refunded"] .result-signal { top: 43%; opacity: 0; }
.flow-readout { min-height: 104px; display: grid; grid-template-columns: 90px 1fr auto; gap: 22px; align-items: center; padding: 20px 22px; border-top: 1px solid var(--border); }
.flow-readout > .mono { color: var(--accent); }
.flow-readout strong { display: block; font: 600 18px/1.4 var(--font-display); }
.flow-readout p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
.flow-status { padding: 6px 9px; border: 1px solid var(--border); color: var(--muted); font-size: 11px; }
.flow-step-rail { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; border-top: 1px solid var(--border); }
.flow-step-rail button { min-height: 48px; padding: 8px; border: 0; border-right: 1px solid var(--border); background: transparent; color: var(--muted); font: 550 10px/1.35 var(--font-body); cursor: pointer; }
.flow-step-rail button:last-child { border-right: 0; }
.flow-step-rail button[aria-current="step"] { background: var(--surface); color: var(--fg); }
.permission-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 30px; background: var(--paper-border); border: 1px solid var(--paper-border); }
.permission-grid article { padding: 26px; background: var(--paper); }
.permission-grid h3 { margin: 0; }
.permission-grid ul { margin-top: 14px; }
.scenario-list { border-top: 1px solid var(--paper-border); margin-top: 30px; }
.scenario-row { display: grid; grid-template-columns: 200px 1fr; gap: 34px; padding: 23px 0; border-bottom: 1px solid var(--paper-border); }
.scenario-row strong { font: 600 19px/1.5 var(--font-display); }
.scenario-row p { margin: 0; }
.team-roster { margin-top: 30px; border-top: 1px solid var(--paper-border); }
.team-member { display: grid; grid-template-columns: 48px 1fr; gap: 28px; padding: 48px 0; border-bottom: 1px solid var(--paper-border); align-items: start; }
.member-index { padding-top: 7px; color: var(--warn); }
.member-content { min-width: 0; }
.member-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; }
.member-heading strong { font: 600 28px/1.35 var(--font-display); }
.member-heading span { color: var(--paper-muted); font-size: 13px; font-weight: 550; }
.team-member blockquote { max-width: 660px; margin: 24px 0 30px; padding: 0; color: var(--ink); font: 600 21px/1.65 var(--font-display); }
.member-profile { display: grid; grid-template-columns: 1.25fr .75fr; gap: 38px; padding-top: 24px; border-top: 1px solid var(--paper-border); }
.profile-label { display: block; margin-bottom: 8px; color: var(--warn); font: 550 11px/1.5 var(--font-mono); letter-spacing: .08em; }
.member-profile p { margin: 0; font-size: 14px; }
.team-vision { margin-top: 4px; padding: 72px 56px !important; background: var(--bg); color: var(--fg); }
.team-vision .mono { margin: 0 0 24px; color: var(--accent); }
.doc-content .team-vision h2 { max-width: 650px; color: var(--fg); font-size: clamp(34px, 4.5vw, 50px); line-height: 1.4; }
.doc-content .team-vision .vision-lead { max-width: 62ch; margin-top: 26px; color: var(--muted); font-size: 17px; }
.vision-points { margin-top: 42px; border-top: 1px solid var(--border); }
.doc-content .vision-points p { margin: 0; padding: 18px 0; border-bottom: 1px solid var(--border); color: var(--fg); }
.principle-list { margin-top: 30px; border-top: 1px solid var(--paper-border); }
.principle-row { display: grid; grid-template-columns: 200px 1fr; gap: 34px; padding: 23px 0; border-bottom: 1px solid var(--paper-border); }
.principle-row strong { font: 600 19px/1.5 var(--font-display); }
.principle-row p { margin: 0; }
.faq-list { margin-top: 28px; border-top: 1px solid var(--paper-border); }
.faq-item { border-bottom: 1px solid var(--paper-border); }
.faq-button { width: 100%; min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 14px 0; border: 0; background: transparent; color: var(--ink); text-align: left; cursor: pointer; font: 550 16px/1.6 var(--font-body); }
.faq-button:hover { background: oklch(0.94 0.012 255); }
.faq-symbol { font: 400 19px/1 var(--font-mono); transition: transform .2s ease; }
.faq-item.open .faq-symbol { transform: rotate(45deg); }
.faq-answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .25s ease; }
.faq-item.open .faq-answer { grid-template-rows: 1fr; }
.faq-answer > div { overflow: hidden; }
.faq-answer p { margin: 0; padding: 0 0 22px; }

.site-footer { padding: 27px 0; background: var(--bg); color: var(--muted); border-top: 1px solid var(--border); }
.footer-inner { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 28px; font-size: 13px; }
.footer-inner nav { display: flex; justify-content: flex-end; gap: 20px; }
.footer-socials { display: flex; align-items: center; gap: 10px; }
.social-placeholder { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid var(--border); color: var(--muted); cursor: default; }
.social-placeholder svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

@media (max-width: 920px) {
  :root { --page: min(100% - 36px, 760px); }
  .home-hero-grid, .section-heading, .application-line, .doc-hero-inner { grid-template-columns: 1fr; gap: 42px; }
  .home-hero-grid { padding-top: 58px; }
  .hero-copy { max-width: 38ch; }
  .status-grid { grid-template-columns: repeat(2, 1fr); }
  .status-cell:nth-child(2) { border-right: 0; }
  .status-cell:nth-child(n+3) { border-top: 1px solid var(--border); }
  .flow-strip { grid-template-columns: repeat(2, 1fr); }
  .flow-item:nth-child(2) { border-right: 0; }
  .flow-item:nth-child(n+3) { border-top: 1px solid var(--paper-border); }
  .application-aside { justify-self: start; }
  .doc-layout { grid-template-columns: 1fr; gap: 42px; }
  .toc { position: static; display: flex; flex-wrap: wrap; border-bottom: 1px solid var(--paper-border); }
  .toc a { padding-right: 24px; border-bottom: 0; }
}

@media (max-width: 640px) {
  :root { --page: calc(100vw - 32px); }
  .site-header { height: auto; min-height: 112px; }
  .nav { flex-wrap: wrap; padding: 10px 0; }
  .brand img { width: 34px; height: 34px; }
  .nav-links { width: 100%; justify-content: space-between; gap: 6px; }
  .nav-links a { min-height: 34px; font-size: 11px; }
  .home-hero { min-height: auto; }
  .home-hero-grid { grid-template-columns: 1fr; padding: 52px 0; }
  .home-hero h1 { font-size: 40px; }
  .hero-kicker { font-size: 16px; }
  .hero-copy { max-width: 34ch; font-size: 16px; }
  .hero-device-visual { min-height: 0; }
  .hero-device-visual img { width: auto; max-width: 88%; height: min(64svh, 560px); }
  .actions { align-items: stretch; flex-direction: column; gap: 10px; }
  .text-link { justify-content: center; }
  .order-body { padding: 20px; }
  .order-head { align-items: flex-start; flex-direction: column; }
  .order-amount { text-align: left; }
  .order-progress { grid-template-columns: repeat(2, 1fr); gap: 18px 0; }
  .order-meta { grid-template-columns: 1fr; }
  .status-grid { grid-template-columns: 1fr; }
  .status-cell, .status-cell:first-child { min-height: auto; padding: 20px 0; border-right: 0; border-top: 1px solid var(--border); }
  .comparison-row { grid-template-columns: 1fr; gap: 14px; }
  .flow-strip { grid-template-columns: 1fr; }
  .flow-item, .flow-item:first-child { min-height: auto; padding: 24px 0; border-right: 0; border-top: 1px solid var(--paper-border); }
  .compact-cta .shell { align-items: stretch; flex-direction: column; }
  .doc-hero-inner { padding: 54px 0 44px; }
  .doc-hero h1 { font-size: 40px; }
  .doc-layout { padding-top: 44px; }
  .toc { display: grid; grid-template-columns: 1fr 1fr; }
  .timeline-row, .scenario-row, .principle-row { grid-template-columns: 1fr; gap: 8px; }
  .flow-demo-bar { align-items: stretch; flex-direction: column; padding: 14px; }
  .flow-mode { display: grid; grid-template-columns: 1fr 1fr; }
  .flow-replay { width: 100%; }
  .flow-stage { height: 610px; margin: 0 16px; }
  .flow-node { width: calc(100% - 68px); min-height: 84px; left: 68px; right: auto; top: auto; transform: none; }
  .flow-payer { top: 28px; }
  .flow-contract { top: 176px; }
  .flow-payee { top: 324px; }
  .flow-arbitration { top: 472px; bottom: auto; }
  .flow-contract.is-active, .flow-arbitration.is-active { transform: translateY(-3px); }
  .flow-track { left: 34px; width: 1px; height: 148px; }
  .flow-track-left { top: 70px; }
  .flow-track-right { top: 218px; }
  .flow-track-dispute { top: 218px; height: 296px; }
  .flow-track::after { inset: 0 -1px; width: 3px; height: 100%; transform: scaleY(0); transform-origin: top; }
  .flow-demo[data-phase="locked"] .flow-track-left::after, .flow-demo[data-phase="delivering"] .flow-track-left::after, .flow-demo[data-phase="released"] .flow-track-left::after, .flow-demo[data-phase="disputed"] .flow-track-left::after, .flow-demo[data-phase="voting"] .flow-track-left::after, .flow-demo[data-phase="refunded"] .flow-track-left::after, .flow-demo[data-phase="released"] .flow-track-right::after { transform: scaleY(1); }
  .fund-marker { left: 34px; top: 70px; }
  .flow-demo[data-fund="contract"] .fund-marker { left: 34px; top: 218px; }
  .flow-demo[data-fund="payee"] .fund-marker { left: 34px; top: 366px; }
  .flow-demo[data-fund="payer"] .fund-marker { left: 34px; top: 70px; }
  .result-signal { left: 34px; top: 514px; }
  .flow-demo[data-phase="refunded"] .result-signal { top: 218px; }
  .flow-readout { grid-template-columns: 1fr; gap: 8px; }
  .flow-status { justify-self: start; }
  .flow-step-rail { grid-auto-flow: row; grid-template-columns: repeat(2, 1fr); }
  .flow-step-rail button { border-bottom: 1px solid var(--border); }
  .team-member { grid-template-columns: 34px 1fr; gap: 14px; padding: 38px 0; }
  .member-heading { align-items: flex-start; flex-direction: column; gap: 3px; }
  .team-member blockquote { margin: 20px 0 24px; font-size: 19px; }
  .member-profile { grid-template-columns: 1fr; gap: 22px; }
  .team-vision { padding: 44px 24px !important; }
  .permission-grid { grid-template-columns: 1fr; }
  .info-table th, .info-table td { display: block; width: 100%; padding-inline: 0; }
  .info-table td { padding-top: 0; border-top: 0; }
  .footer-inner { grid-template-columns: 1fr; align-items: start; }
  .footer-inner nav { justify-content: flex-start; flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}