/* ONTOGENY / OWS-008. Local font lookup only; no font files are included. */
@font-face {
  font-family: Geist;
  src: local("Geist"), local("Geist Sans");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}
:root {
  color-scheme: dark;
  --bg: #050505;
  --surface: #0a0a0a;
  --ink: #f2f2ef;
  --muted: #a2a2a2;
  --dim: #8b8b8b;
  --line: #2b2b2b;
  --strong-line: #555;
  --sans: Geist, Arial, Helvetica, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --gutter: clamp(24px, 4.4vw, 88px);
  --measure: 1512px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 30px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 var(--sans); -webkit-font-smoothing: antialiased; }
button, input { font: inherit; }
button, a, input { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
button { color: inherit; border: 0; border-radius: 0; cursor: pointer; }
button:disabled { cursor: default; }
img, svg { display: block; max-width: 100%; }
p, h1, h2, h3, h4 { margin: 0; }
button:focus-visible, a:focus-visible, input:focus-visible, [tabindex="0"]:focus-visible { outline: 2px solid var(--ink); outline-offset: 6px; }
::selection { background: #e8e8e8; color: #080808; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.js-only { display: none !important; }
.js .js-only { display: revert !important; }
.skip-link { position: fixed; z-index: 20; top: 12px; left: 16px; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; background: var(--ink); color: #080808; }
.skip-link:focus { width: auto; height: auto; clip-path: none; overflow: visible; padding: 12px 20px; }
.site-header, main, footer { width: calc(100% - var(--gutter) * 2); max-width: var(--measure); margin-inline: auto; }
.site-header { display: flex; align-items: center; min-height: 112px; gap: 46px; border-bottom: 1px solid var(--line); }
.brand { display: block; flex: 0 0 auto; width: 224px; }
.brand img { width: 100%; height: auto; mix-blend-mode: screen; }
.site-header nav { display: flex; gap: 34px; margin-left: auto; align-items: center; }
.site-header nav a { display: flex; align-items: center; gap: 10px; min-height: 44px; font-size: 13px; color: #c9c9c9; }
.site-header nav a span { font: 9px var(--mono); color: var(--dim); transform: translateY(-5px); }
.site-header nav a:hover, .site-header nav a[aria-current="location"] { color: #fff; }
.access-label { color: var(--dim); font: 10px var(--mono); letter-spacing: .12em; text-transform: uppercase; padding-left: 28px; border-left: 1px solid var(--line); white-space: nowrap; }
.mono, .eyebrow { font-family: var(--mono); font-weight: 400; font-size: 10px; line-height: 1.5; letter-spacing: .09em; }
.eyebrow { display: flex; align-items: center; gap: 12px; text-transform: uppercase; font-size: 11px; letter-spacing: .15em; color: var(--muted); }
.pin { display: inline-block; flex: 0 0 auto; width: 6px; height: 6px; background: var(--ink); box-shadow: 0 0 13px #ffffff40; }
.hero { position: relative; display: grid; grid-template-columns: 1fr 1.05fr; min-height: 706px; align-items: center; }
.hero-copy { position: relative; z-index: 1; padding-block: 84px 66px; }
.hero h1 { font-size: clamp(68px, 7.7vw, 116px); line-height: .98; font-weight: 500; letter-spacing: -.066em; margin: 31px 0 32px; }
.hero h1 span { color: #939393; }
.hero-description { color: var(--muted); max-width: 435px; font-size: 16px; line-height: 1.75; }
.primary-button { background: var(--ink); color: #0a0a0a; display: inline-flex; align-items: center; justify-content: space-between; gap: 38px; min-height: 56px; padding: 16px 23px; font-size: 14px; font-weight: 600; line-height: 1.4; text-align: left; transition: background .16s ease; }
.primary-button:hover { background: #d9d9d9; }
.primary-button span[aria-hidden] { font-size: 26px; line-height: .8; font-weight: 400; }
.hero .primary-button { margin-top: 31px; }
.hero-footnote { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 45px; color: var(--dim); font: 9px/1.6 var(--mono); letter-spacing: .12em; }
.hero-space { position: relative; min-width: 0; margin-left: -8px; margin-right: -6px; padding-top: 26px; }
.section { padding-block: 91px 104px; border-top: 1px solid var(--line); scroll-margin-top: 20px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 50px; margin-bottom: 43px; }
.section-heading .eyebrow { margin-bottom: 22px; }
.section-heading h2 { font-size: clamp(35px, 3.7vw, 55px); line-height: 1.06; letter-spacing: -.047em; font-weight: 500; }
.section-heading h2 span { color: #939393; }
.section-heading > p { font-size: 14px; color: var(--muted); line-height: 1.75; padding-bottom: 3px; }
.explorer { display: grid; grid-template-columns: minmax(230px, .48fr) minmax(0, 1.52fr); gap: 36px; align-items: start; }
.no-js .explorer { grid-template-columns: 1fr; }
.system-list { border-top: 1px solid var(--line); }
.system-tab { display: grid; grid-template-columns: 23px minmax(0, 1fr) 16px; align-items: center; gap: 12px; position: relative; width: 100%; padding: 27px 18px; min-height: 108px; background: transparent; border-bottom: 1px solid var(--line); text-align: left; }
.system-tab::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: transparent; }
.system-tab.active::before { background: var(--ink); }
.system-tab:hover, .system-tab.active { background: #101010; }
.system-number { align-self: start; margin-top: 5px; font: 10px var(--mono); color: var(--dim); }
.system-tab strong { display: block; font-size: 15px; font-weight: 500; line-height: 1.3; }
.system-tab small { display: block; color: var(--muted); font-size: 11px; line-height: 1.45; margin-top: 6px; }
.tab-arrow { color: var(--dim); font-size: 19px; opacity: 0; }
.system-tab.active .tab-arrow, .system-tab:hover .tab-arrow { opacity: 1; }
.system-tab.active .system-number, .system-tab.active .tab-arrow { color: var(--ink); }
.list-caption { display: flex; gap: 10px; align-items: center; color: var(--dim); padding: 26px 0 0 10px; font: 9px/1.7 var(--mono); letter-spacing: .02em; }
.list-caption .pin { width: 4px; height: 4px; box-shadow: none; background: #999; }
.system-panel { min-width: 0; border: 1px solid var(--line); background: var(--surface); }
.panel-top { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 24px 32px; border-bottom: 1px solid var(--line); color: var(--muted); }
.status-tag { display: inline-block; font: 9px/1.3 var(--mono); letter-spacing: .05em; text-transform: uppercase; border: 1px solid #444; padding: 6px 8px; color: #d5d5d5; white-space: nowrap; }
.panel-main { padding: 35px 34px 30px; display: flex; justify-content: space-between; align-items: center; gap: 25px; }
.panel-copy h3 { font-size: clamp(35px, 3.2vw, 48px); line-height: 1.05; letter-spacing: -.045em; font-weight: 500; }
.system-fullname { margin-top: 14px; font-size: 13px; line-height: 1.6; color: var(--muted); }
.system-glyph { width: 68px; flex: 0 0 auto; margin-right: 9px; opacity: .68; mix-blend-mode: screen; }
.system-glyph img { mix-blend-mode: screen; width: 100%; height: auto; }
.dossier-panels { min-height: 342px; padding: 0 34px 28px; }
.system-content { padding-top: 24px; border-top: 1px solid var(--line); }
.content-kicker { color: var(--dim); text-transform: uppercase; margin-bottom: 13px; }
.system-content h4 { font-size: 25px; line-height: 1.15; letter-spacing: -.025em; font-weight: 500; margin-bottom: 18px; }
.system-content > p:not(.content-kicker) { font-size: 14px; line-height: 1.75; color: #b7b7b7; max-width: 620px; margin-top: 12px; }
.boundary-note { display: grid; grid-template-columns: 97px minmax(0, 1fr); gap: 15px; padding: 18px 0 0; margin-top: 23px; border-top: 1px solid var(--line); }
.boundary-note > span { font-size: 9px; margin-top: 2px; color: var(--dim); }
.boundary-note p { font-size: 12px; line-height: 1.7; color: #c4c4c4; max-width: 590px; }
.panel-footer { padding: 13px 32px; border-top: 1px solid var(--line); color: var(--dim); }
.js .panel-footer.js-only { display: flex !important; align-items: center; justify-content: space-between; gap: 20px; }
.text-button { background: transparent; color: #c5c5c5; font-size: 11px; padding: 12px 0; min-height: 44px; }
.text-button:hover { color: white; }
.text-button span { margin-left: 12px; }
.no-js .system-content + .system-content { margin-top: 32px; }
footer { min-height: 158px; padding-block: 37px; display: flex; align-items: center; gap: 35px; border-top: 1px solid var(--line); }
footer .brand { width: 172px; }
footer p { font-size: 12px; color: var(--muted); }
footer > .mono { font-size: 9px; color: var(--dim); margin-left: auto; }
.back-top { font-size: 11px; min-height: 44px; display: flex; align-items: center; gap: 14px; }
.back-top:hover { color: #aaa; }
.noscript { padding: 22px var(--gutter); font-size: 13px; background: #171717; color: #ccc; }
@media (min-width: 1700px) {
.hero { min-height: 765px; }
.hero h1 { font-size: 120px; }
}
@media (max-width: 1150px) {
.site-header { gap: 26px; }
.brand { width: 200px; }
.access-label { padding-left: 22px; }
.hero { min-height: 636px; }
.hero h1 { font-size: 8vw; }
.hero-description { font-size: 15px; max-width: 370px; }
.hero-space { margin-left: -28px; margin-right: -10px; }
.explorer { grid-template-columns: 235px minmax(0, 1fr); gap: 26px; }
.system-tab { padding-inline: 13px; gap: 8px; }
.system-tab strong { font-size: 14px; }
.panel-top, .panel-footer { padding-inline: 26px; }
.panel-main { padding-inline: 26px; }
.dossier-panels { padding-inline: 26px; }
.system-glyph { width: 54px; }
footer { gap: 24px; }
}
@media (max-width: 880px) {
.site-header { min-height: 98px; gap: 24px; }
.access-label { display: none; }
.site-header nav { gap: 26px; }
.hero { grid-template-columns: 1fr; }
.hero-copy { padding: 78px 0 0; }
.hero h1 { font-size: clamp(64px, 11.5vw, 98px); margin-block: 29px 31px; }
.hero-description { max-width: 525px; font-size: 17px; }
.hero-space { max-width: 695px; width: 100%; justify-self: center; margin: 0; padding: 10px 0 45px; }
.hero-footnote { margin-top: 37px; }
.section { padding-block: 74px 80px; }
.section-heading { gap: 30px; }
.section-heading h2 { font-size: 37px; }
.section-heading > p { font-size: 12px; max-width: 215px; }
.explorer { grid-template-columns: 200px minmax(0, 1fr); gap: 20px; }
.system-tab { grid-template-columns: 17px 1fr; padding: 23px 13px; }
.tab-arrow { display: none; }
.system-tab small { font-size: 10px; }
.list-caption { font-size: 8px; padding-left: 0; }
.panel-top { flex-wrap: wrap; gap: 10px; }
.panel-top .mono { font-size: 8px; }
.system-glyph { display: none; }
.panel-copy h3 { font-size: 37px; }
.system-fullname { font-size: 11px; }
.system-content h4 { font-size: 23px; }
.system-content > p:not(.content-kicker) { font-size: 13px; }
.boundary-note { grid-template-columns: 1fr; gap: 8px; }
.dossier-panels { min-height: 452px; }
footer { flex-wrap: wrap; gap: 14px 24px; }
footer .brand { width: 175px; }
footer > .mono { font-size: 8px; }
}
@media (max-width: 600px) {
:root { --gutter: 24px; }
html { scroll-padding-top: 20px; }
.site-header { min-height: 91px; gap: 18px; flex-wrap: wrap; padding-block: 18px; }
.brand { width: 163px; }
.site-header nav { gap: 17px; }
.site-header nav a { font-size: 10px; min-height: 44px; }
.site-header nav a span { display: none; }
.hero-copy { padding-top: 59px; }
.eyebrow { font-size: 9px; letter-spacing: .1em; gap: 10px; }
.pin { width: 5px; height: 5px; }
.hero h1 { font-size: clamp(53px, 12.6vw, 75px); margin: 26px 0 27px; line-height: 1; letter-spacing: -.061em; }
.hero-description { font-size: 14px; line-height: 1.8; max-width: 400px; }
.hero .primary-button { margin-top: 27px; min-height: 55px; font-size: 12px; padding: 17px 19px; gap: 36px; }
.hero-footnote { gap: 12px 18px; font-size: 7px; letter-spacing: .05em; margin-top: 33px; }
.hero-space { padding: 14px 0 34px; margin: 0 -14px; width: calc(100% + 28px); }
.section { padding-block: 58px 62px; }
.section-heading { display: block; margin-bottom: 29px; }
.section-heading .eyebrow { margin-bottom: 21px; }
.section-heading h2 { font-size: clamp(30px, 7.6vw, 43px); line-height: 1.1; }
.section-heading > p { font-size: 13px; margin-top: 24px; max-width: 100%; }
.desktop-break { display: none; }
.explorer { grid-template-columns: 1fr; gap: 22px; }
.js .system-list.js-only { display: grid !important; grid-template-columns: 1fr 1fr 1.26fr; border-top: 0; gap: 8px; }
.system-tab { display: flex; align-items: flex-start; flex-direction: column; gap: 8px; border-top: 1px solid #555; border-bottom: 0; padding: 12px 7px 15px; min-height: 90px; }
.system-tab::before { display: none; }
.system-tab.active { border-top-color: var(--ink); }
.system-number { margin: 0; font-size: 8px; }
.system-tab strong { font-size: 11px; line-height: 1.5; }
.system-tab small, .list-caption { display: none; }
.panel-top { padding: 19px 20px; gap: 14px; }
.panel-top .mono { font-size: 8px; letter-spacing: .05em; }
.status-tag { font-size: 8px; }
.panel-main { padding: 29px 20px 25px; }
.panel-copy h3 { font-size: 38px; }
.system-fullname { font-size: 12px; max-width: 260px; }
.dossier-panels { padding: 0 20px 24px; min-height: 0; }
.content-kicker { font-size: 9px; }
.system-content { padding-top: 21px; }
.system-content h4 { font-size: 24px; line-height: 1.2; }
.system-content > p:not(.content-kicker) { font-size: 13px; line-height: 1.85; }
.boundary-note { margin-top: 23px; padding-top: 17px; }
.boundary-note p { font-size: 12px; }
.panel-footer { padding: 11px 20px; }
.panel-footer > .mono { font-size: 8px; }
.text-button { font-size: 10px; }
footer { display: grid; grid-template-columns: 1fr auto; padding: 25px 0 31px; gap: 18px; }
footer .brand { width: 166px; }
footer p { font-size: 10px; grid-column: 1; grid-row: 2; }
footer > .mono { margin: 0; font-size: 7px; grid-column: 1; grid-row: 3; }
footer .back-top { grid-column: 2; grid-row: 1 / 3; font-size: 10px; align-self: end; }
}
@media (max-width: 375px) {
:root { --gutter: 19px; }
.site-header { gap: 8px; }
.brand { width: 139px; }
.site-header nav { gap: 12px; }
.site-header nav a { font-size: 9px; }
.hero h1 { font-size: 12.1vw; }
.hero-footnote { font-size: 6px; }
.system-tab strong { font-size: 10px; }
.panel-main, .panel-top { padding-inline: 17px; }
.dossier-panels { padding-inline: 17px; }
.panel-copy h3 { font-size: 34px; }
}
@media (prefers-reduced-motion: reduce) {
html { scroll-behavior: auto; }
*, *::before, *::after { animation: none !important; transition: none !important; }
}
@media print {
:root { --bg: #fff; --ink: #080808; --muted: #333; --dim: #555; --line: #aaa; --surface: #fff; --gutter: 0px; }
body { font-size: 12px; }
.hero-space, .site-header nav, .access-label, .primary-button, .system-list, .panel-footer, .back-top, .skip-link { display: none !important; }
.hero, .explorer { display: block; min-height: 0; }
.hero-copy, .section { padding-block: 24px; }
.hero h1 { font-size: 56px; }
.section-heading h2 { font-size: 32px; }
.system-content[hidden] { display: block !important; margin-top: 25px; }
.brand { filter: invert(1); }
.brand img { mix-blend-mode: normal; }
.system-glyph { display: none; }
.system-panel { background: white; color: #111; }
.system-content > p:not(.content-kicker), .boundary-note p { color: #333; }
}
.official-identity { display: block; width: 100%; height: auto; overflow: hidden; mix-blend-mode: screen; }
.brand-lockup { line-height: 0; }
footer .brand-symbol { width: 38px; line-height: 0; }
.system-glyph.system-glyph--stratadome { display: block; width: 152px; margin: 0; opacity: 1; flex: 0 0 auto; }
@media (max-width: 1150px) {
.system-glyph.system-glyph--stratadome { width: 124px; }
}
@media (max-width: 880px) {
.system-glyph.system-glyph--stratadome { width: 96px; }
}
@media (max-width: 720px) {
.panel-main { flex-direction: column; align-items: flex-start; gap: 22px; }
.system-glyph.system-glyph--stratadome { width: 112px; order: -1; }
}
@media (max-width: 600px) {
footer .brand-symbol { width: 34px; }
}
@media print {
.official-identity { mix-blend-mode: normal; }
.system-glyph.system-glyph--stratadome { display: none; }
}
.js #stratadome:not(.dossier-ready) .js-only { display: none !important; }

/* The demonstration is a single stateful view, not a cumulative document. */
.sequence { border: 1px solid var(--line); background: #080808; }
.sequence-bar { display: flex; align-items: center; justify-content: space-between; padding: 20px 32px; border-bottom: 1px solid var(--line); color: var(--muted); }
.sequence-bar .mono { font-size: 10px; letter-spacing: .06em; }
.sequence-navigation, .sequence-controls { display: none; }
.sequence.ready .sequence-navigation { display: block; }
.sequence.ready .sequence-controls { display: flex; }
.sequence-steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(8,minmax(0,1fr)); gap: 0; }
.sequence-steps li { min-width: 0; }
.sequence-steps button { position: relative; display: flex; align-items: center; justify-content: center; gap: 10px; width: 100%; padding: 20px 4px; min-height: 62px; border-bottom: 1px solid var(--line); background: transparent; color: var(--dim); font-size: 11px; }
.sequence-steps button > span { font: 9px var(--mono); }
.sequence-steps button::after { content: ''; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: transparent; }
.sequence-steps button[aria-current="step"] { color: var(--ink); }
.sequence-steps button[aria-current="step"]::after { background: var(--ink); }
.sequence-steps button:hover { color: white; background: #101010; }
.sequence-steps button:focus-visible { outline-offset: -6px; }
.sequence-viewport { overflow: hidden; }
.sequence-scene { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); grid-template-rows: 1fr auto; column-gap: clamp(32px,5vw,78px); row-gap: 24px; min-height: 416px; padding: 48px 40px 28px; }
.sequence-copy { min-width: 0; }
.sequence-copy h3 { max-width: 470px; font-size: clamp(29px,2.7vw,40px); line-height: 1.12; font-weight: 500; letter-spacing: -.038em; }
.sequence-copy > p { max-width: 460px; margin-top: 20px; color: #b3b3b3; font-size: 14px; line-height: 1.75; }
.sequence-choice { border: 0; margin: 23px 0 0; padding: 0; min-width: 0; }
.sequence-choice legend { padding: 0 0 9px; color: var(--dim); font: 9px/1.5 var(--mono); text-transform: uppercase; letter-spacing: .05em; }
.sequence-choice label { display: flex; align-items: center; gap: 10px; min-height: 44px; padding: 8px 0; font-size: 12px; cursor: pointer; }
.sequence-choice input { width: 15px; height: 15px; flex: 0 0 auto; margin: 0; accent-color: #e4e4e4; cursor: pointer; }
.sequence-choice input:focus-visible { outline-offset: 4px; }
.exchange { min-width: 0; align-self: start; padding-top: 12px; }
.exchange-pair { display: grid; grid-template-columns: minmax(0,1fr) 54px minmax(0,1fr); align-items: stretch; }
.exchange-endpoint { min-width: 0; border-top: 1px solid #5a5a5a; padding-top: 19px; }
.exchange-endpoint .mono { display: block; font-size: 9px; letter-spacing: .04em; color: var(--dim); }
.exchange-endpoint strong { display: block; margin-top: 19px; max-width: 180px; font-weight: 400; font-size: clamp(18px,1.65vw,23px); letter-spacing: -.025em; line-height: 1.3; }
.exchange-connection { height: 1px; background: var(--line); margin: 1px 12px 0; position: relative; }
.exchange-connection[data-direction="forward"], .exchange-connection[data-direction="back"] { background: #999; }
.exchange-connection[data-direction="forward"]::after { content: ''; position: absolute; right: 0; top: -3px; width: 5px; height: 5px; transform: rotate(-45deg); border-right: 1px solid #bbb; border-bottom: 1px solid #bbb; }
.exchange-connection[data-direction="back"]::after { content: ''; position: absolute; left: 0; top: -3px; width: 5px; height: 5px; transform: rotate(135deg); border-right: 1px solid #bbb; border-bottom: 1px solid #bbb; }
.exchange-connection > span { display: none; }
.exchange-outcome { border-top: 1px solid var(--line); padding-top: 19px; margin-top: 40px; }
.exchange-outcome > .mono { display: block; font-size: 9px; letter-spacing: .04em; color: var(--dim); }
.exchange-outcome > p { color: #dedede; font-size: 14px; line-height: 1.65; margin-top: 10px; max-width: 450px; }
.sequence-note { grid-column: 1 / -1; font-size: 11px; line-height: 1.7; color: #989898; max-width: 880px; align-self: end; }
.sequence-controls { align-items: center; justify-content: space-between; gap: 12px; border-top: 1px solid var(--line); padding: 16px 32px; }
.sequence-controls button { background: transparent; font-size: 12px; display: inline-flex; align-items: center; justify-content: center; min-height: 46px; gap: 12px; padding: 10px 0; }
.sequence-controls button:not(:disabled):hover { color: white; }
.sequence-controls button:disabled { color: #575757; cursor: default; }
.sequence-controls .sequence-play { color: #b4b4b4; }
.sequence-controls .sequence-next { background: var(--ink); color: #080808; padding-inline: 20px; min-width: 145px; justify-content: space-between; }
.sequence-controls .sequence-next:not(:disabled):hover { color: #080808; background: #d5d5d5; }
.play-icon { width: 12px; line-height: 1; font-size: 16px; }
.sequence-caption { margin-top: 16px; font: 10px/1.6 var(--mono); letter-spacing: .025em; color: var(--dim); }
.sequence-static-note { padding: 20px 32px; font-size: 13px; line-height: 1.7; color: var(--muted); border-top: 1px solid var(--line); }
.sequence.ready .sequence-static-note { display: none; }
@media (max-width: 1150px) {
  .sequence-scene { padding: 36px 28px 26px; min-height: 430px; column-gap: 32px; }
  .sequence-steps button { gap: 5px; font-size: 10px; }
  .exchange-pair { grid-template-columns: minmax(0,1fr) 36px minmax(0,1fr); }
  .exchange-connection { margin-inline: 6px; }
}
@media (max-width: 880px) {
  .sequence-scene { min-height: 465px; }
  .sequence-copy h3 { font-size: 30px; }
  .sequence-copy > p { font-size: 13px; }
  .exchange-endpoint strong { font-size: 20px; }
  .exchange-endpoint .mono { font-size: 8px; }
  .sequence-steps button { flex-direction: column; gap: 6px; padding-block: 12px; }
}
@media (max-width: 680px) {
  .sequence-bar { padding: 17px 20px; }
  .sequence-bar .mono { font-size: 9px; }
  .sequence-steps { grid-template-columns: repeat(4,minmax(0,1fr)); }
  .sequence-steps button { flex-direction: row; gap: 6px; min-height: 46px; padding: 10px 4px; }
  .sequence-scene { grid-template-columns: 1fr; grid-template-rows: minmax(255px,auto) auto auto; min-height: 555px; padding: 28px 22px 22px; row-gap: 26px; }
  .sequence-copy h3 { font-size: 30px; max-width: 410px; }
  .sequence-copy > p { font-size: 13px; margin-top: 15px; max-width: 400px; }
  .sequence-choice { margin-top: 18px; }
  .exchange { padding: 0; }
  .exchange-pair { grid-template-columns: minmax(0,1fr) 38px minmax(0,1fr); }
  .exchange-endpoint { padding-top: 12px; }
  .exchange-endpoint strong { margin-top: 13px; font-size: 20px; }
  .exchange-outcome { margin-top: 23px; padding-top: 14px; }
  .exchange-outcome > p { margin-top: 7px; font-size: 13px; }
  .sequence-note { font-size: 10px; }
  .sequence-controls { padding: 13px 20px; gap: 8px; }
  .sequence-controls button { font-size: 11px; gap: 6px; }
  .sequence-controls .sequence-next { min-width: 106px; padding-inline: 13px; }
  .sequence-controls .sequence-play { gap: 6px; }
  .sequence-caption { font-size: 9px; }
}
@media (max-width: 375px) {
  .sequence-scene { padding-inline: 16px; }
  .sequence-copy h3 { font-size: 27px; }
  .sequence-controls { padding-inline: 12px; }
  .sequence-controls .sequence-next { min-width: 95px; padding-inline: 10px; }
  .sequence-controls button { font-size: 10px; }
  .sequence-steps button { font-size: 9px; }
  .exchange-endpoint strong { font-size: 18px; }
}
@media print {
  .sequence-navigation, .sequence-controls, .sequence-caption { display: none !important; }
  .sequence { background: #fff; color: #111; break-inside: avoid; }
  .sequence-scene { min-height: 0; }
  .sequence-copy > p, .exchange-outcome > p, .sequence-note { color: #333; }
}
@media (max-width: 460px) {
  /* Keep controls in place while a shorter step replaces a choice-bearing step. */
  .sequence-scene { grid-template-rows: minmax(290px,auto) minmax(220px,auto) minmax(34px,auto); row-gap: 20px; }
  .sequence-note { align-self: start; }
}
@media (max-width: 375px) {
  .sequence-scene { grid-template-rows: minmax(302px,auto) minmax(220px,auto) minmax(34px,auto); }
}

/* OWS-009: mobile icon and progressively enhanced preview only.
   Native controls below do not bypass a viewer's script restrictions.
   The enhanced desktop sequence, its DOM, and app.js remain unchanged. */
.hero .primary-button .cta-vector { display: none; }
@media (max-width: 880px), (hover: none), (pointer: coarse) {
  .hero .primary-button .cta-glyph { display: none; }
  .hero .primary-button .cta-arrow { display: inline-flex; align-items: center; justify-content: center; width: 26px; height: 21px; flex: 0 0 26px; }
  .hero .primary-button .cta-vector { display: block; width: 24px; height: 24px; overflow: visible; }
}
#sequence:not(.ready) { display: none; }
#sequence.ready + .preview-sequence { display: none; }
.preview-sequence { position: relative; margin: 0; border: 1px solid var(--line); background: #080808; }
.preview-native-input { position: absolute; top: 0; left: 0; width: 1px; height: 1px; margin: 0; padding: 0; border: 0; clip-path: inset(50%); opacity: 0; overflow: hidden; }
.preview-count { display: none; }
.preview-nav { display: grid; grid-template-columns: repeat(8,minmax(0,1fr)); }
.preview-nav label { display: flex; position: relative; align-items: center; justify-content: center; gap: 9px; min-height: 62px; padding: 16px 4px; border-bottom: 1px solid var(--line); color: var(--dim); cursor: pointer; font-size: 11px; touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
.preview-nav label > span { font: 9px var(--mono); }
.preview-nav label::after { content: ''; position: absolute; bottom: -1px; left: 0; right: 0; height: 2px; background: transparent; }
.preview-step, .preview-variant { display: none; }
.preview-pages { overflow: hidden; }
.preview-variant { animation: preview-step-enter 240ms ease-out both; }
.preview-choice { margin: 23px 0 0; padding: 0; border: 0; }
.preview-choice legend { padding: 0 0 9px; color: var(--dim); font: 9px/1.5 var(--mono); text-transform: uppercase; letter-spacing: .05em; }
.preview-choice label { display: flex; align-items: center; gap: 10px; min-height: 44px; padding: 8px 0; font-size: 12px; cursor: pointer; touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
.preview-choice label::before { content: ''; width: 15px; height: 15px; flex: 0 0 15px; border: 1px solid #999; border-radius: 50%; box-shadow: inset 0 0 0 3px #080808; }
.preview-controls { display: flex; align-items: center; justify-content: space-between; gap: 12px; border-top: 1px solid var(--line); padding: 16px 32px; }
.preview-controls label, .preview-controls button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 46px; padding: 10px 0; background: transparent; color: var(--ink); font-size: 12px; cursor: pointer; touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
.preview-controls .preview-forward { background: var(--ink); color: #080808; padding-inline: 20px; min-width: 145px; justify-content: space-between; }
.preview-controls .preview-disabled { display: inline-flex; align-items: center; gap: 10px; color: #575757; font-size: 12px; min-height: 46px; }
.preview-mode-note { margin: 0; padding: 10px 20px 13px; border-top: 1px solid var(--line); font: 9px/1.65 var(--mono); color: var(--dim); }
.preview-nav label:hover, .preview-choice label:hover { color: #fff; }
@keyframes preview-step-enter { from { opacity: .35; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
@media (max-width: 1150px) {
  .preview-nav label { font-size: 10px; gap: 5px; }
}
@media (max-width: 880px) {
  .preview-nav label { flex-direction: column; gap: 6px; padding-block: 12px; }
}
@media (max-width: 680px) {
  .preview-nav { grid-template-columns: repeat(4,minmax(0,1fr)); }
  .preview-nav label { flex-direction: row; gap: 6px; min-height: 46px; padding: 10px 4px; }
  .preview-sequence .sequence-scene { min-height: 0; grid-template-rows: auto auto auto; row-gap: 28px; padding: 26px 22px 24px; }
  .preview-sequence .sequence-copy { min-height: 160px; }
  .preview-sequence .exchange { min-height: 195px; }
  .preview-sequence .sequence-note { min-height: 34px; }
  .preview-choice { margin-top: 18px; }
  .preview-controls { padding: 13px 20px; gap: 8px; }
  .preview-controls label, .preview-controls button, .preview-controls .preview-disabled { font-size: 11px; gap: 6px; }
  .preview-controls .preview-forward { min-width: 106px; padding-inline: 13px; }
}
@media (max-width: 375px) {
  .preview-nav label { font-size: 9px; }
  .preview-sequence .sequence-scene { padding-inline: 16px; }
  .preview-controls { padding-inline: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .preview-variant { animation: none; }
}
@media print {
  .preview-nav, .preview-controls, .preview-mode-note { display: none; }
  .preview-variant { animation: none; }
}

#pv-step-0:checked ~ .sequence-bar .preview-count-0 { display: inline; }
#pv-step-0:checked ~ .preview-pages .preview-step-0 { display: block; }
#pv-step-0:checked ~ .preview-nav label[for="pv-step-0"] { color: var(--ink); }
#pv-step-0:checked ~ .preview-nav label[for="pv-step-0"]::after { background: var(--ink); }
#pv-step-0:focus-visible ~ .preview-nav label[for="pv-step-0"] { outline: 2px solid var(--ink); outline-offset: -5px; }
#pv-step-1:checked ~ .sequence-bar .preview-count-1 { display: inline; }
#pv-step-1:checked ~ .preview-pages .preview-step-1 { display: block; }
#pv-step-1:checked ~ .preview-nav label[for="pv-step-1"] { color: var(--ink); }
#pv-step-1:checked ~ .preview-nav label[for="pv-step-1"]::after { background: var(--ink); }
#pv-step-1:focus-visible ~ .preview-nav label[for="pv-step-1"] { outline: 2px solid var(--ink); outline-offset: -5px; }
#pv-step-2:checked ~ .sequence-bar .preview-count-2 { display: inline; }
#pv-step-2:checked ~ .preview-pages .preview-step-2 { display: block; }
#pv-step-2:checked ~ .preview-nav label[for="pv-step-2"] { color: var(--ink); }
#pv-step-2:checked ~ .preview-nav label[for="pv-step-2"]::after { background: var(--ink); }
#pv-step-2:focus-visible ~ .preview-nav label[for="pv-step-2"] { outline: 2px solid var(--ink); outline-offset: -5px; }
#pv-step-3:checked ~ .sequence-bar .preview-count-3 { display: inline; }
#pv-step-3:checked ~ .preview-pages .preview-step-3 { display: block; }
#pv-step-3:checked ~ .preview-nav label[for="pv-step-3"] { color: var(--ink); }
#pv-step-3:checked ~ .preview-nav label[for="pv-step-3"]::after { background: var(--ink); }
#pv-step-3:focus-visible ~ .preview-nav label[for="pv-step-3"] { outline: 2px solid var(--ink); outline-offset: -5px; }
#pv-step-4:checked ~ .sequence-bar .preview-count-4 { display: inline; }
#pv-step-4:checked ~ .preview-pages .preview-step-4 { display: block; }
#pv-step-4:checked ~ .preview-nav label[for="pv-step-4"] { color: var(--ink); }
#pv-step-4:checked ~ .preview-nav label[for="pv-step-4"]::after { background: var(--ink); }
#pv-step-4:focus-visible ~ .preview-nav label[for="pv-step-4"] { outline: 2px solid var(--ink); outline-offset: -5px; }
#pv-step-5:checked ~ .sequence-bar .preview-count-5 { display: inline; }
#pv-step-5:checked ~ .preview-pages .preview-step-5 { display: block; }
#pv-step-5:checked ~ .preview-nav label[for="pv-step-5"] { color: var(--ink); }
#pv-step-5:checked ~ .preview-nav label[for="pv-step-5"]::after { background: var(--ink); }
#pv-step-5:focus-visible ~ .preview-nav label[for="pv-step-5"] { outline: 2px solid var(--ink); outline-offset: -5px; }
#pv-step-6:checked ~ .sequence-bar .preview-count-6 { display: inline; }
#pv-step-6:checked ~ .preview-pages .preview-step-6 { display: block; }
#pv-step-6:checked ~ .preview-nav label[for="pv-step-6"] { color: var(--ink); }
#pv-step-6:checked ~ .preview-nav label[for="pv-step-6"]::after { background: var(--ink); }
#pv-step-6:focus-visible ~ .preview-nav label[for="pv-step-6"] { outline: 2px solid var(--ink); outline-offset: -5px; }
#pv-step-7:checked ~ .sequence-bar .preview-count-7 { display: inline; }
#pv-step-7:checked ~ .preview-pages .preview-step-7 { display: block; }
#pv-step-7:checked ~ .preview-nav label[for="pv-step-7"] { color: var(--ink); }
#pv-step-7:checked ~ .preview-nav label[for="pv-step-7"]::after { background: var(--ink); }
#pv-step-7:focus-visible ~ .preview-nav label[for="pv-step-7"] { outline: 2px solid var(--ink); outline-offset: -5px; }
#pv-release-yes:checked ~ .preview-pages label[for="pv-release-yes"]::before { background: #eee; border-color: #ddd; }
#pv-release-yes:focus-visible ~ .preview-pages label[for="pv-release-yes"] { outline: 2px solid var(--ink); outline-offset: 2px; }
#pv-release-no:checked ~ .preview-pages label[for="pv-release-no"]::before { background: #eee; border-color: #ddd; }
#pv-release-no:focus-visible ~ .preview-pages label[for="pv-release-no"] { outline: 2px solid var(--ink); outline-offset: 2px; }
#pv-accept-yes:checked ~ .preview-pages label[for="pv-accept-yes"]::before { background: #eee; border-color: #ddd; }
#pv-accept-yes:focus-visible ~ .preview-pages label[for="pv-accept-yes"] { outline: 2px solid var(--ink); outline-offset: 2px; }
#pv-accept-no:checked ~ .preview-pages label[for="pv-accept-no"]::before { background: #eee; border-color: #ddd; }
#pv-accept-no:focus-visible ~ .preview-pages label[for="pv-accept-no"] { outline: 2px solid var(--ink); outline-offset: 2px; }
#pv-respond-yes:checked ~ .preview-pages label[for="pv-respond-yes"]::before { background: #eee; border-color: #ddd; }
#pv-respond-yes:focus-visible ~ .preview-pages label[for="pv-respond-yes"] { outline: 2px solid var(--ink); outline-offset: 2px; }
#pv-respond-no:checked ~ .preview-pages label[for="pv-respond-no"]::before { background: #eee; border-color: #ddd; }
#pv-respond-no:focus-visible ~ .preview-pages label[for="pv-respond-no"] { outline: 2px solid var(--ink); outline-offset: 2px; }
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s0-v0,
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s0-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s0-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s0-v0,
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s0-v0,
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s0-v0,
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s0-v0,
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s0-v0 { display: grid; }
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s1-v0,
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s1-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s1-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s1-v0 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s1-v1,
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s1-v1,
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s1-v1,
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s1-v1 { display: grid; }
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s2-v0,
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s2-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s2-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s2-v0 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s2-v1,
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s2-v1 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s2-v2,
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s2-v2 { display: grid; }
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s3-v0,
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s3-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s3-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s3-v0 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s3-v1,
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s3-v1 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s3-v2,
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s3-v2 { display: grid; }
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s4-v0,
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s4-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s4-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s4-v0 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s4-v1,
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s4-v1 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s4-v2,
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s4-v2 { display: grid; }
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s5-v0,
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s5-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s5-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s5-v0 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s5-v1,
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s5-v1 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s5-v2 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s5-v3 { display: grid; }
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s6-v0,
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s6-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s6-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s6-v0 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s6-v1,
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s6-v1 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s6-v2 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s6-v3 { display: grid; }
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s7-v0,
#pv-release-no:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s7-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s7-v0,
#pv-release-no:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s7-v0 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s7-v1,
#pv-release-yes:checked ~ #pv-accept-no:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s7-v1 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-no:checked ~ .preview-pages .pv-s7-v2 { display: grid; }
#pv-release-yes:checked ~ #pv-accept-yes:checked ~ #pv-respond-yes:checked ~ .preview-pages .pv-s7-v3 { display: grid; }

/* Keep inactive native decision groups outside the keyboard focus order. */
.preview-decision-input { visibility: hidden; }
#pv-step-1:checked ~ input[name="preview-release"] { visibility: visible; }
#pv-step-2:checked ~ #pv-release-yes:checked ~ input[name="preview-accept"] { visibility: visible; }
#pv-step-5:checked ~ #pv-release-yes:checked ~ #pv-accept-yes:checked ~ input[name="preview-respond"] { visibility: visible; }