/* ==========================================================================
   Room Twenty Two — Living Brand Guidelines
   APPROVED (Brand Style PDF): six palette values, type roles, flat mark,
   selective glow treatment, outline icons, rounded UI.
   PROPOSED (implementation): every size, radius, timing and breakpoint below.
   ========================================================================== */

/* ---------- Typefaces ---------- */
/* Aeonik Pro: the studio's own WOFF2 web-font files (Regular 400, Bold 700).
   No Medium/italic web files were supplied, so none are declared — the browser
   is never asked to synthesise a weight (font-synthesis: none on body). */
@font-face {
  font-family: "R22 Aeonik Pro";
  src: url("../assets/fonts/AeonikPro-Regular.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "R22 Aeonik Pro";
  src: url("../assets/fonts/AeonikPro-Bold.woff2") format("woff2");
  font-weight: 700; font-style: normal; font-display: swap;
}
/* Fallback only — downloaded solely if Aeonik fails to load. */
@font-face {
  font-family: "R22 Inter Tight";
  src: url("../assets/fonts/InterTight-Variable.woff") format("woff");
  font-weight: 100 900; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "R22 Manrope";
  src: url("../assets/fonts/Manrope-Variable.woff") format("woff");
  font-weight: 200 800; font-style: normal; font-display: swap;
}

/* ---------- Theme tokens: dark is the default ---------- */
:root, .scope-dark {
  --bg: #000000; --bg-rgb: 0 0 0;
  --fg: #F4F3EF; --fg-2: #B7B7B7; --fg-3: #767676;
  --line: #1A1A1A; --line-strong: #767676;
  --surface-2: #1A1A1A;
  --veil: rgba(0, 0, 0, .72); --veil-soft: rgba(0, 0, 0, .45);
  --accent-ink: #FE5918;           /* orange used as small text — passes 6.7:1 on black */
  --stripe-a: #050505; --stripe-b: #000000;
  --frame-edge: rgba(118, 118, 118, .45); --frame-shadow: 0 40px 80px -30px rgba(0, 0, 0, .9);
  --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23F4F3EF' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  color-scheme: dark;
}
/* Light: an editorial white canvas, warm-white surfaces, black type, orange with intent.
   Room Orange is only 3.2:1 on white, so small orange text switches to black (accent-ink);
   orange stays for large type, icons, fills and borders. */
[data-theme="light"] {
  --bg: #FFFFFF; --bg-rgb: 255 255 255;
  --fg: #000000; --fg-2: #767676; --fg-3: #767676;
  --line: rgba(0, 0, 0, .12); --line-strong: #767676;
  --surface-2: #F4F3EF;
  --veil: rgba(255, 255, 255, .8); --veil-soft: rgba(255, 255, 255, .6);
  --accent-ink: #000000;
  --stripe-a: #F4F3EF; --stripe-b: #FAFAF8;
  --frame-edge: rgba(0, 0, 0, .1); --frame-shadow: 0 30px 70px -35px rgba(0, 0, 0, .35);
  --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  color-scheme: light;
}

:root {
  --black: #000000;
  --orange: #FE5918;
  --white: #F4F3EF;
  --soft-grey: #B7B7B7;
  --neutral-grey: #767676;
  --graphite: #1A1A1A;

  /* Typography rhythm (proposed). Display = hero/chapter titles. */
  --track-display: -0.018em;
  --track-h2: -0.01em;
  --lh-display: 1.02;

  --font-head: "R22 Aeonik Pro", "R22 Inter Tight", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --font-body: "R22 Manrope", "Manrope", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;

  --gutter: clamp(1.25rem, 4vw, 4rem);
  --maxw: 84rem;
  --radius: .75rem;
  --radius-card: 1rem;
  --radius-lg: 1.5rem;
  --header-h: 4.25rem;

  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --ease-inout: cubic-bezier(.65, 0, .35, 1);
  --t-fast: 180ms;
  --t-med: 420ms;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: var(--header-h); }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: var(--font-body); font-size: clamp(1rem, .95rem + .2vw, 1.125rem); line-height: 1.6;
  font-synthesis: none; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}
img, svg, canvas, video { display: block; max-width: 100%; }
img { height: auto; }
h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 700; margin: 0; line-height: 1.08; letter-spacing: var(--track-h2); }
p { margin: 0; }
a { color: var(--accent-ink); text-underline-offset: .2em; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
::selection { background: var(--orange); color: #000; }
:focus-visible { outline: 2px solid var(--fg); outline-offset: 4px; border-radius: 4px; }
[hidden] { display: none !important; }
code { font-size: .9em; color: var(--fg-2); }

.skip-link { position: fixed; left: 1rem; top: -4rem; z-index: 200; background: var(--orange); color: #000; padding: .75rem 1rem; border-radius: var(--radius); text-decoration: none; }
.skip-link:focus { top: 1rem; }

.container { width: 100%; max-width: calc(var(--maxw) + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter); }
.chapter { position: relative; padding-block: clamp(5rem, 12vw, 10rem); }
.fine { font-size: .8125rem; line-height: 1.55; color: var(--fg-3); }
.accent { color: var(--orange); }
.flip-x { display: inline-block; transform: scaleX(-1); }

.font-head-bold { font-family: var(--font-head); font-weight: 700; }
.font-head-regular { font-family: var(--font-head); font-weight: 400; }
.font-body { font-family: var(--font-body); font-weight: 400; }

/* ---------- Keys: approved / experimental / concept ---------- */
.key {
  display: inline-flex; align-items: center; gap: .45em; padding: .3em .75em; border-radius: 999px;
  font-family: var(--font-body); font-size: .6875rem; line-height: 1.2; letter-spacing: .08em; text-transform: uppercase; font-weight: 600; font-style: normal;
  border: 1px solid var(--line-strong); color: var(--fg-2); white-space: nowrap;
}
.key::before { content: ""; width: .5em; height: .5em; border-radius: 2px; background: currentColor; }
.key--approved { border-color: var(--fg); color: var(--fg); }
.key--experimental { border: 1px dashed var(--orange); color: var(--accent-ink); }
.key--experimental::before { background: transparent; border: 1px solid currentColor; }
.key--concept { border-color: var(--fg-2); color: var(--fg-2); }
.key--concept::before { border-radius: 50%; }
.key--inline { font-size: .625rem; margin-left: .25em; vertical-align: middle; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100; height: var(--header-h);
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1rem;
  padding-inline: var(--gutter);
  transition: background-color var(--t-med) var(--ease-out), backdrop-filter var(--t-med);
}
.site-header.is-solid { background: var(--veil); -webkit-backdrop-filter: blur(14px) saturate(1.2); backdrop-filter: blur(14px) saturate(1.2); }
.site-header__brand { display: inline-flex; align-items: center; gap: .75rem; color: var(--fg); text-decoration: none; font-size: .875rem; justify-self: start; min-height: 44px; }
.site-header__mark { width: 2.1rem; display: block; }
.site-header__mark svg { width: 100%; height: auto; overflow: visible; }
.site-header__title { letter-spacing: .01em; }
.site-header__chapter { display: flex; align-items: center; gap: .6rem; font-size: .8125rem; color: var(--fg-2); overflow: hidden; }
.site-header__chapter-num { color: var(--accent-ink); font-variant-numeric: tabular-nums; font-weight: 600; }
.site-header__chapter-name { display: inline-block; overflow: hidden; height: 1.6em; }
.site-header__chapter-name span { display: inline-block; }
.site-header__actions { justify-self: end; display: flex; align-items: center; gap: .5rem; }

.motion-switch { display: inline-flex; align-items: center; gap: .55rem; min-height: 44px; padding: 0 .6rem; border: 0; background: none; font-size: .8125rem; color: var(--fg-2); border-radius: 999px; }
.motion-switch__track { width: 2.25rem; height: 1.25rem; border-radius: 999px; border: 1px solid var(--line-strong); position: relative; transition: border-color var(--t-fast), background-color var(--t-fast); }
.motion-switch__thumb { position: absolute; top: 2px; left: 2px; width: calc(1.25rem - 6px); height: calc(1.25rem - 6px); border-radius: 50%; background: var(--fg-3); transition: transform 420ms cubic-bezier(.34,1.56,.64,1), background-color var(--t-fast); }
.motion-switch[aria-checked="true"] .motion-switch__track { border-color: var(--orange); }
.motion-switch[aria-checked="true"] .motion-switch__thumb { transform: translateX(1rem); background: var(--orange); }
.motion-switch:hover { color: var(--fg); }

.menu-button { display: inline-flex; align-items: center; gap: .75rem; min-height: 44px; padding: 0 .9rem 0 1.1rem; border-radius: 999px; border: 1px solid var(--line-strong); background: var(--veil-soft); font-size: .8125rem; transition: border-color var(--t-fast); }
.menu-button:hover { border-color: var(--fg); }
.menu-button__icon { position: relative; width: 16px; height: 10px; }
.menu-button__icon i { position: absolute; left: 0; right: 0; height: 1.5px; background: currentColor; border-radius: 2px; transition: transform 500ms var(--ease-out), top 500ms var(--ease-out); }
.menu-button__icon i:first-child { top: 1px; }
.menu-button__icon i:last-child { top: 7px; }
.menu-button[aria-expanded="true"] .menu-button__icon i:first-child { top: 4px; transform: rotate(45deg); }
.menu-button[aria-expanded="true"] .menu-button__icon i:last-child { top: 4px; transform: rotate(-45deg); }

.site-progress { position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--line); }
.site-progress span { display: block; height: 100%; background: var(--orange); transform-origin: left; transform: scaleX(0); }

/* ---------- Chapter menu ---------- */
.chapter-menu { position: fixed; inset: 0; z-index: 90; display: grid; grid-template-rows: 1fr auto; padding: calc(var(--header-h) + 2rem) var(--gutter) 2rem; overflow-y: auto; }
.chapter-menu__bg { position: absolute; inset: 0; background: var(--bg); z-index: -1; }
.chapter-menu__list { list-style: none; margin: 0; padding: 0; align-self: center; counter-reset: c; }
.chapter-menu__list li { overflow: hidden; border-top: 1px solid var(--line); }
.chapter-menu__list li:last-child { border-bottom: 1px solid var(--line); }
.chapter-menu__list a { display: flex; align-items: baseline; gap: clamp(1rem, 3vw, 3rem); padding: clamp(.4rem, 1.2vh, 1rem) 0; color: var(--fg); text-decoration: none; }
.chapter-menu__list span { font-size: .8125rem; color: var(--accent-ink); font-variant-numeric: tabular-nums; width: 2ch; }
.chapter-menu__list b { font-family: var(--font-head); font-size: clamp(1.6rem, 1rem + 3.4vw, 4.25rem); letter-spacing: var(--track-h2); line-height: 1.05; transition: transform 500ms var(--ease-out), color 300ms; display: inline-block; }
.chapter-menu__list a:hover b, .chapter-menu__list a:focus-visible b { transform: translateX(.35em); color: var(--orange); }
.chapter-menu__list a[aria-current="true"] b { color: var(--orange); }
.chapter-menu__foot { display: flex; flex-wrap: wrap; gap: .75rem 2rem; padding-top: 2rem; font-size: .8125rem; color: var(--fg-2); }
.chapter-menu__foot p { display: flex; align-items: center; gap: .6rem; }

/* ---------- Side index ---------- */
.side-index { position: fixed; right: calc(var(--gutter) * .5); top: 50%; transform: translateY(-50%); z-index: 80; display: flex; flex-direction: column; gap: .1rem; }
.side-index a { display: flex; align-items: center; justify-content: flex-end; gap: .5rem; width: 44px; height: 30px; color: var(--fg-3); text-decoration: none; font-size: .6875rem; font-variant-numeric: tabular-nums; }
.side-index a::after { content: ""; width: 10px; height: 1px; background: currentColor; transition: width 400ms var(--ease-out), background-color 300ms; }
.side-index a span { opacity: 0; transform: translateX(6px); transition: opacity 300ms, transform 400ms var(--ease-out); }
.side-index a:hover span, .side-index a.is-active span, .side-index a:focus-visible span { opacity: 1; transform: none; }
.side-index a.is-active { color: var(--accent-ink); }
.side-index a.is-active::after { width: 22px; }
@media (max-width: 1100px) { .side-index { display: none; } }

/* ---------- Buttons ---------- */
.btn {
  --bh: 3rem;
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: .6rem;
  min-height: var(--bh); padding: .75rem 1.5rem; border-radius: var(--radius);
  border: 1px solid var(--orange); background: var(--orange); color: #000;
  font-family: var(--font-body); font-size: 1rem; font-weight: 500; line-height: 1.2; text-decoration: none; white-space: nowrap;
  isolation: isolate; overflow: hidden; -webkit-tap-highlight-color: transparent;
  transition: border-color var(--t-fast), background-color var(--t-fast), color var(--t-fast);
}
.btn__icon { display: inline-flex; width: 1.25rem; height: 1.25rem; flex: none; }
.btn__icon svg, [data-icon] svg { width: 100%; height: 100%; }
[data-icon] { display: inline-flex; width: 1.25rem; height: 1.25rem; flex: none; }
.btn--secondary { background: var(--bg); color: var(--accent-ink); }
.btn--ghost { background: transparent; border-color: var(--fg-3); color: var(--fg); }
.btn--ghost:hover { border-color: var(--fg); }
.btn--small { --bh: 2.75rem; padding: .55rem 1rem; font-size: .875rem; }
.btn--large { --bh: 3.75rem; padding: 1rem 1.9rem; font-size: 1.125rem; }
.btn:active { transform: translateY(1px); }
.btn--primary:hover { background: #ff6a30; }

.linkish { background: none; border: 0; padding: 0; color: var(--fg-2); text-decoration: underline; text-underline-offset: .2em; min-height: 24px; }
.linkish:hover { color: var(--fg); }

/* ---------- Eyebrows / chapter heads ---------- */
.eyebrow { font-size: .8125rem; color: var(--fg-2); letter-spacing: .02em; }
.chapter-head { max-width: 58rem; margin-bottom: clamp(2.5rem, 6vw, 5rem); }
.chapter-head__num { font-size: .875rem; font-weight: 600; color: var(--accent-ink); margin-bottom: 1.25rem; font-family: var(--font-head); }
.chapter-head__title { font-size: clamp(2.6rem, 1.4rem + 5.2vw, 6.5rem); line-height: var(--lh-display); letter-spacing: var(--track-display); margin-bottom: 1.5rem; }
.chapter-head__intro { font-family: var(--font-head); font-weight: 400; font-size: clamp(1.15rem, 1rem + .7vw, 1.6rem); line-height: 1.35; color: var(--fg-2); max-width: 40rem; letter-spacing: -.01em; }
/* Text-reveal masks (SplitText). The library clips each line with overflow:clip, which
   cut off descenders and wide words. Clip only below the line, with room for descenders. */
.rv-line-mask, .rv-word-mask, .rv-char-mask { padding-bottom: .22em; margin-bottom: -.22em; padding-right: .12em; margin-right: -.12em; }
.rv-char-mask, .rv-word-mask { display: inline-block; }

/* ---------- Controls ---------- */
.control { border: 0; margin: 0 0 1.5rem; padding: 0; min-width: 0; }
.control legend, .control__label { display: flex; justify-content: space-between; width: 100%; font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; color: var(--fg-2); margin-bottom: .65rem; padding: 0; }
.control__label output { color: var(--fg); text-transform: none; letter-spacing: 0; font-variant-numeric: tabular-nums; }
.control__note { font-size: .8125rem; color: var(--fg-3); margin-top: .7rem; min-height: 1.3em; }
.control__note--live { color: var(--accent-ink); }
.control--row { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; }

.segmented { position: relative; display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; padding: 4px; border: 1px solid var(--line-strong); border-radius: 999px; isolation: isolate; }
.segmented button { position: relative; z-index: 1; min-height: 40px; padding: .4rem .6rem; border: 0; border-radius: 999px; background: none; font-size: .8125rem; color: var(--fg-2); transition: color 350ms; white-space: nowrap; }
.segmented button[aria-pressed="true"] { color: #000; }
.segmented button:hover:not([aria-pressed="true"]) { color: var(--fg); }
.segmented__pill { position: absolute; z-index: 0; top: 4px; bottom: 4px; left: 4px; width: 0; border-radius: 999px; background: var(--orange); }

.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip { display: inline-flex; align-items: center; gap: .5rem; min-height: 44px; padding: .45rem .95rem; border-radius: 999px; border: 1px solid var(--line-strong); background: var(--bg); font-size: .8125rem; color: var(--fg); transition: border-color var(--t-fast), background-color var(--t-fast), color var(--t-fast); }
.chip:hover { border-color: var(--fg); }
.chip[aria-pressed="true"] { border-color: var(--orange); color: var(--accent-ink); }
.chip[aria-disabled="true"] { border-style: dashed; color: var(--fg-3); cursor: not-allowed; }
.chip .sw { width: .9rem; height: .9rem; border-radius: 4px; background: var(--c); border: 1px solid var(--line-strong); }

.toggle { display: inline-flex; align-items: center; gap: .6rem; min-height: 44px; padding: 0 .2rem; border: 0; background: none; font-size: .875rem; color: var(--fg); }
.toggle__box { width: 1.15rem; height: 1.15rem; border-radius: 5px; border: 1px solid var(--line-strong); display: grid; place-items: center; transition: background-color var(--t-fast), border-color var(--t-fast); }
.toggle__box::after { content: ""; width: .55rem; height: .3rem; border-left: 2px solid var(--bg); border-bottom: 2px solid var(--bg); transform: translateY(-1px) rotate(-45deg) scale(0); transition: transform 300ms cubic-bezier(.34,1.56,.64,1); }
.toggle[aria-pressed="true"] .toggle__box { background: var(--orange); border-color: var(--orange); }
.toggle[aria-pressed="true"] .toggle__box::after { transform: translateY(-1px) rotate(-45deg) scale(1); }

.range { -webkit-appearance: none; appearance: none; width: 100%; height: 28px; background: transparent; margin: 0; }
.range::-webkit-slider-runnable-track { height: 2px; background: linear-gradient(to right, var(--orange) var(--p, 50%), var(--line-strong) var(--p, 50%)); border-radius: 2px; }
.range::-moz-range-track { height: 2px; background: var(--line-strong); border-radius: 2px; }
.range::-moz-range-progress { height: 2px; background: var(--orange); }
.range::-webkit-slider-thumb { -webkit-appearance: none; width: 18px; height: 18px; margin-top: -8px; border-radius: 50%; background: var(--fg); border: 0; transition: transform 200ms; }
.range::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: var(--fg); border: 0; }
.range:active::-webkit-slider-thumb { transform: scale(1.25); }


.transport { display: flex; align-items: center; gap: .6rem; }
.transport__btn { width: 44px; height: 44px; flex: none; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--line-strong); background: var(--bg); color: var(--fg); transition: border-color var(--t-fast), color var(--t-fast); }
.transport__btn:hover { border-color: var(--orange); color: var(--accent-ink); }
.transport__btn [data-icon] { width: 1.1rem; height: 1.1rem; }
.transport__time { font-size: .8125rem; color: var(--fg-2); font-variant-numeric: tabular-nums; min-width: 4.5ch; text-align: right; }
.transport__scrub { flex: 1; }

/* ==========================================================================
   01 — INTRO
   ========================================================================== */
.intro { min-height: 100svh; padding: 0; display: grid; grid-template-rows: 1fr auto; overflow: hidden; }
.intro__media { position: absolute; inset: 0; z-index: 0; }
.intro__media picture, .intro__media img { width: 100%; height: 100%; }
.intro__media img { object-fit: cover; object-position: 72% 50%; }
.intro__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, var(--bg) 0%, rgb(var(--bg-rgb) / .85) 30%, rgb(var(--bg-rgb) / 0) 62%), linear-gradient(0deg, var(--bg) 0%, rgb(var(--bg-rgb) / 0) 30%); }
.intro__light { position: absolute; inset: 0; background: radial-gradient(28rem 22rem at var(--lx, 75%) var(--ly, 50%), rgba(254,89,24,.14), transparent 70%); mix-blend-mode: screen; pointer-events: none; }
.intro__lockup { position: absolute; z-index: 3; top: calc(var(--header-h) + clamp(1.5rem, 5vh, 3.5rem)); left: var(--gutter); width: clamp(11rem, 18vw, 15.5rem); }
.intro__lockup svg { width: 100%; height: auto; overflow: visible; }
.intro__content { position: relative; z-index: 2; align-self: center; padding: calc(var(--header-h) + 7rem) var(--gutter) 2rem; max-width: min(64rem, 100%); }
.intro__content .eyebrow { margin-bottom: 1.5rem; }
.intro__title { font-size: clamp(3.4rem, min(9.2vw, 17svh), 10.5rem); line-height: .98; letter-spacing: var(--track-display); margin-bottom: 2rem; }
.intro__title .line { display: block; overflow: hidden; padding: 0 .12em .22em 0; margin: 0 -.12em -.22em 0; }
.intro__title .line__inner { display: inline-block; }
.intro__lede { font-family: var(--font-head); font-weight: 400; font-size: clamp(1.15rem, 1rem + .9vw, 1.75rem); line-height: 1.3; letter-spacing: -.01em; color: var(--fg); max-width: 32rem; margin-bottom: 2.25rem; }
.intro__actions { display: flex; flex-wrap: wrap; gap: .75rem; }
.intro__foot { position: relative; z-index: 2; display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1.25rem var(--gutter) 1.5rem; font-size: .75rem; color: var(--fg-2); }
.intro__scroll { display: inline-flex; align-items: center; gap: .6rem; letter-spacing: .12em; text-transform: uppercase; }
.intro__scroll i { width: 1px; height: 28px; background: linear-gradient(var(--orange), transparent); animation: scrollcue 2.4s var(--ease-inout) infinite; transform-origin: top; }
@keyframes scrollcue { 0% { transform: scaleY(0); } 45% { transform: scaleY(1); transform-origin: top; } 55% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }
.intro__skip { position: absolute; z-index: 5; right: var(--gutter); bottom: 4.5rem; min-height: 40px; padding: .4rem .9rem; border-radius: 999px; border: 1px solid var(--line-strong); background: var(--veil-soft); font-size: .75rem; color: var(--fg-2); opacity: 0; pointer-events: none; transition: opacity 300ms; }
.intro.is-playing .intro__skip { opacity: 1; pointer-events: auto; }
@media (max-width: 759px) {
  .intro__media img { object-position: 78% 40%; opacity: .75; }
  .intro__media::after { background: linear-gradient(0deg, var(--bg) 8%, rgb(var(--bg-rgb) / .6) 55%, rgb(var(--bg-rgb) / .25) 100%); }
  .intro__content { align-self: end; padding-top: 14rem; }
  .intro__foot span:last-child { display: none; }
}

/* ==========================================================================
   02 — LOGO LAB
   ========================================================================== */
.logo-lab__grid { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr); gap: clamp(1.5rem, 3vw, 3rem); align-items: start; }
.logo-stage { position: relative; aspect-ratio: 16 / 11; border-radius: var(--radius-lg); border: 1px solid var(--line); background: #000; overflow: hidden; isolation: isolate; transition: border-color 600ms; }
.logo-stage[data-canvas="white"] { border-color: transparent; }
.logo-stage__wipe { position: absolute; inset: 0; z-index: -1; background: #F4F3EF; clip-path: circle(0% at 50% 50%); }
.logo-stage__labels { position: absolute; z-index: 2; inset: 1rem 1rem auto 1rem; display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.logo-stage__meta { font-size: .75rem; color: var(--fg-3); }
.logo-stage[data-canvas="white"] .key--approved { color: #000; border-color: #000; }
.logo-stage__art { position: absolute; inset: 14% 10%; display: grid; place-items: center; }
.logo-stage__art svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.logo-stage__ruler { position: absolute; left: 1rem; bottom: 1rem; font-size: .75rem; color: var(--fg-3); font-variant-numeric: tabular-nums; }
.logo-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: clamp(3rem, 6vw, 5rem); border-top: 1px solid var(--line); }
.logo-strip__item { margin: 0; padding: 2rem 1.5rem 0; border-left: 1px solid var(--line); display: grid; grid-template-rows: 7rem auto; gap: 1rem; }
.logo-strip__item:first-child { border-left: 0; padding-left: 0; }
.logo-strip__item svg { width: 100%; height: 100%; max-width: 13rem; }
.logo-strip__item figcaption { font-size: .75rem; color: var(--fg-3); }
@media (max-width: 900px) {
  .logo-lab__grid { grid-template-columns: 1fr; }
  .logo-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .logo-strip__item:nth-child(3) { border-left: 0; padding-left: 0; }
}
@media (max-width: 520px) { .segmented button { font-size: .75rem; padding-inline: .3rem; } }

/* ==========================================================================
   03 — COLOUR
   ========================================================================== */
.colour { overflow: hidden; transition: color 700ms var(--ease-out); }
.colour__field { position: absolute; inset: 0; z-index: 0; background: var(--bg); }
.colour__inner { position: relative; z-index: 1; }
.colour .chapter-head__intro { color: inherit; opacity: .78; }
.palette { display: flex; height: clamp(22rem, 52vh, 34rem); gap: 6px; }
.swatch {
  position: relative; flex: var(--g, 1) 1 0; min-width: 3.25rem; border-radius: var(--radius-card); background: var(--c); color: var(--fg);
  border: 1px solid var(--edge, transparent); overflow: hidden; cursor: pointer; text-align: left; padding: 0; display: block;
  transition: box-shadow 300ms;
}
.swatch__inner { position: absolute; inset: auto 0 0 0; padding: 1.25rem; display: grid; gap: .25rem; width: max(100%, 16rem); }
.swatch__name { font-family: var(--font-head); font-weight: 700; font-size: clamp(1.1rem, .9rem + .8vw, 1.75rem); letter-spacing: var(--track-h2); line-height: 1.1; }
.swatch__hex { font-size: .8125rem; font-variant-numeric: tabular-nums; letter-spacing: .06em; opacity: .85; }
.swatch__role { font-size: .8125rem; opacity: .75; max-width: 16rem; }
.swatch__actions { display: flex; gap: .4rem; margin-top: .75rem; }
.swatch__btn { white-space: nowrap; min-height: 36px; padding: .3rem .8rem; border-radius: 999px; border: 1px solid currentColor; background: transparent; color: inherit; font-size: .75rem; display: inline-flex; align-items: center; gap: .4rem; }
.swatch__btn [data-icon] { width: .95rem; height: .95rem; }
.swatch__num { position: absolute; top: 1rem; left: 1.1rem; font-size: .6875rem; opacity: .6; letter-spacing: .08em; }
.swatch .swatch__detail { opacity: 0; transform: translateY(8px); transition: opacity 350ms, transform 450ms var(--ease-out); }
.swatch.is-open .swatch__detail { opacity: 1; transform: none; }
.palette__fine { margin-top: 1rem; }
.swatch { container-type: inline-size; }
@container (max-width: 150px) {
  .swatch__inner { width: auto; inset: 1rem auto 1rem 0; padding: 0 1rem; writing-mode: vertical-rl; transform: rotate(180deg); align-content: start; justify-content: start; }
  .swatch__detail, .swatch__role { display: none; }
  .swatch__name { font-size: 1.05rem; }
}
@media (max-width: 760px) {
  .palette { flex-direction: column; height: auto; }
  .swatch { flex: none !important; min-height: 5.5rem; height: var(--h, 5.5rem); }
  .swatch.is-open { --h: 13rem; }
  .swatch__num { display: none; }
}

.contrast { margin-top: clamp(4rem, 8vw, 7rem); }
.contrast__head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem 3rem; align-items: end; margin-bottom: 2rem; }
.contrast__head h3 { font-size: clamp(1.75rem, 1.3rem + 1.6vw, 2.75rem); }
.contrast__head p { max-width: 30rem; color: inherit; opacity: .7; font-size: .9375rem; }
.contrast__body { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: clamp(1.5rem, 3vw, 3rem); align-items: start; }
.contrast__matrix { display: grid; grid-template-columns: auto repeat(6, minmax(0, 1fr)); gap: 4px; font-size: .6875rem; }
.contrast__matrix .hdr { display: grid; place-items: center; padding: .3rem; color: var(--fg-3); text-align: center; }
.contrast__matrix .hdr i { width: 1rem; height: 1rem; border-radius: 4px; background: var(--c); border: 1px solid rgba(118,118,118,.6); }
.cell { width: 100%; aspect-ratio: 1; border-radius: 8px; background: var(--bg); color: var(--fg); border: 1px solid rgba(118,118,118,.25); display: grid; place-items: center; align-content: center; gap: .1rem; padding: 0; font-family: var(--font-head); transition: transform 300ms var(--ease-out), box-shadow 300ms; position: relative; }
.cell b { font-size: clamp(.9rem, .7rem + .7vw, 1.4rem); line-height: 1; }
.cell small { font-family: var(--font-body); font-size: .625rem; opacity: .85; font-variant-numeric: tabular-nums; }
.cell.is-same { opacity: .25; }
.cell[aria-selected="true"] { box-shadow: 0 0 0 2px var(--orange); transform: scale(1.06); z-index: 1; }
.cell.fail::after { content: ""; position: absolute; inset: 6px; border-radius: 4px; border: 1px dashed currentColor; opacity: .35; }
/* colour chapter text adapts to the immersive field */
.colour .fine { color: inherit; opacity: .7; }
.colour .contrast__preview .fine { color: var(--fg-2); opacity: 1; }
.contrast__preview { color: var(--fg); border-radius: var(--radius-lg); border: 1px solid var(--line-strong); overflow: hidden; background: var(--bg); }
.contrast__sample { padding: clamp(1.5rem, 3vw, 2.5rem); background: var(--pbg, #000); color: var(--pfg, #F4F3EF); min-height: 15rem; transition: background-color 500ms var(--ease-out), color 500ms var(--ease-out); }
.contrast__sample-h { font-family: var(--font-head); font-weight: 700; font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.6rem); line-height: 1.05; letter-spacing: var(--track-h2); margin-bottom: 1rem; }
.contrast__sample-b { font-size: .9375rem; max-width: 34rem; }
.contrast__stats { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; border-top: 1px solid var(--line); color: var(--fg); }
.contrast__stats div { padding: 1rem 1.25rem; border-left: 1px solid var(--line); }
.contrast__stats div:first-child { border-left: 0; }
.contrast__stats dt { font-size: .6875rem; text-transform: uppercase; letter-spacing: .08em; color: var(--fg-3); }
.contrast__stats dd { margin: .2rem 0 0; font-family: var(--font-head); font-size: 1.25rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.contrast__preview > .fine { padding: 0 1.25rem 1.25rem; min-height: 2.5rem; }
@media (max-width: 900px) { .contrast__body { grid-template-columns: 1fr; } }

/* ==========================================================================
   04 — TYPE
   ========================================================================== */
.type { overflow: hidden; }
.type__giant { position: absolute; z-index: 0; top: 0; right: -4vw; font-family: var(--font-head); font-weight: 700; color: var(--orange); font-size: clamp(14rem, 34vw, 38rem); line-height: .8; letter-spacing: var(--track-display); pointer-events: none; display: flex; }
.type__giant span { display: inline-block; will-change: transform; }
.type .container { position: relative; z-index: 1; }
.type .chapter-head { max-width: min(56rem, 62%); }
@media (max-width: 900px) { .type .chapter-head { max-width: none; } }
.specimens { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); margin-top: clamp(4rem, 10vw, 10rem); }
.specimen { padding: 2rem 2rem 0 0; border-left: 1px solid var(--line); padding-left: 2rem; }
.specimen:first-child { border-left: 0; padding-left: 0; }
.specimen__aa { font-size: clamp(4.5rem, 3rem + 5vw, 8rem); line-height: 1; letter-spacing: var(--track-h2); margin-bottom: 1rem; }
.specimen h3 { font-size: 1.25rem; letter-spacing: -.01em; margin-bottom: .4rem; }
.specimen p:last-child { color: var(--fg-2); font-size: .9375rem; }
.font-status { margin-top: 2rem; font-size: .8125rem; color: var(--fg-3); max-width: 46rem; }
.font-status b { color: var(--fg); font-weight: 600; }
@media (max-width: 760px) {
  .specimens { grid-template-columns: 1fr; }
  .specimen { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); padding-bottom: 1.5rem; }
  .specimen:first-child { border-top: 0; }
}

.playground { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); gap: clamp(1.5rem, 3vw, 3rem); margin-top: clamp(4rem, 8vw, 7rem); }
.playground__stage { position: relative; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(1.25rem, 3vw, 2.5rem); min-height: 28rem; display: flex; flex-direction: column; overflow: hidden; }
.key-row { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin-bottom: auto; padding-bottom: 2rem; }
.playground__text {
  --size: 96px; --track: -0.025em; --lead: 1.05;
  font-family: var(--font-head); font-weight: 700; font-size: min(var(--size), 10.5vw); letter-spacing: var(--track); line-height: var(--lead);
  outline: none; overflow-wrap: break-word; color: var(--fg); caret-color: var(--orange); min-height: 1em;
}
.playground__text:focus-visible { box-shadow: inset 0 -2px 0 var(--orange); }
.playground__text[data-role="intro"] { font-weight: 400; }
.playground__text[data-role="body"] { font-family: var(--font-body); font-weight: 400; }
.playground__text.is-orange { color: var(--orange); }
.playground__text .stop { color: var(--orange); }
.playground__text.is-orange .stop { color: var(--fg); }
@media (max-width: 900px) { .playground { grid-template-columns: 1fr; } .playground__stage { min-height: 20rem; } }

/* ==========================================================================
   05 — UI LAB
   ========================================================================== */
.ui-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.ui-card { background: var(--bg); display: grid; grid-template-rows: 1fr auto; min-height: 17rem; }
.ui-card--wide { grid-column: span 3; min-height: 13rem; }
@media (min-width: 1101px) { .ui-card--wide { grid-column: span 1; } .ui-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } .ui-card--wide { grid-column: span 2; } }
.ui-card__stage { display: grid; place-items: center; padding: 2.5rem 1.5rem 1.5rem; }
.ui-card footer { padding: 0 1.5rem 1.5rem; display: grid; gap: .3rem; }
.ui-card footer b { font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-ink); font-weight: 600; }
.ui-card footer span { font-size: .8125rem; color: var(--fg-2); line-height: 1.5; }
@media (max-width: 1100px) { .ui-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .ui-card--wide { grid-column: span 2; } }
@media (max-width: 640px) { .ui-grid { grid-template-columns: minmax(0, 1fr); } .ui-card--wide { grid-column: auto; } .ui-card__stage { padding-inline: 1rem; } }

[data-roll] .btn__label { display: inline-flex; overflow: hidden; height: 1.2em; line-height: 1.2; }
[data-roll] .ch { display: inline-block; position: relative; white-space: pre; }
[data-roll] .ch::after { content: attr(data-c); position: absolute; left: 0; top: 100%; }

.btn--fill { color: var(--accent-ink); }
.btn__fill { position: absolute; inset: -1px; z-index: -1; background: var(--orange); clip-path: circle(0% at var(--fx, 50%) var(--fy, 50%)); }
.btn--fill.is-filled { color: #000; }

.btn--outline-draw { background: transparent; border-color: transparent; color: var(--fg); overflow: visible; }
.btn__outline { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.btn__outline rect { fill: none; stroke: var(--orange); stroke-width: 1.5; x: .75px; y: .75px; width: calc(100% - 1.5px); height: calc(100% - 1.5px); }
.btn--outline-draw::before { content: ""; position: absolute; inset: 0; border: 1px solid var(--line-strong); border-radius: var(--radius); }

.expand-btn { display: inline-flex; align-items: center; height: 52px; min-width: 52px; padding: 0; border-radius: 999px; border: 1px solid var(--fg); background: transparent; color: var(--fg); overflow: hidden; }
.expand-btn__label { width: 0; overflow: hidden; white-space: nowrap; font-size: .9375rem; opacity: 0; }
.expand-btn__icon { width: 50px; height: 50px; display: grid; place-items: center; flex: none; }
.expand-btn__icon svg { width: 22px; height: 22px; }

.geo-btn { display: inline-flex; align-items: center; gap: .9rem; min-height: 52px; padding: .6rem 1.4rem .6rem 1rem; border-radius: var(--radius); border: 1px solid var(--line-strong); background: var(--bg); color: var(--fg); font-size: 1rem; transition: border-color 250ms; }
.geo-btn:hover, .geo-btn:focus-visible { border-color: var(--orange); }
.geo-btn__mark { width: 2.4rem; display: block; }
.geo-btn__mark svg { width: 100%; height: auto; overflow: visible; }

.tags { display: flex; flex-wrap: wrap; gap: .5rem; justify-content: center; }
.tag { display: inline-flex; align-items: center; gap: 0; min-height: 44px; padding: .4rem 1rem; border-radius: 999px; border: 1px solid var(--line-strong); background: var(--bg); color: var(--fg); font-size: .875rem; transition: background-color 300ms, border-color 300ms, color 300ms, padding 400ms var(--ease-out); }
.tag svg { width: 0; height: 1rem; overflow: visible; transition: width 400ms var(--ease-out), margin 400ms var(--ease-out); }
.tag svg path { fill: none; stroke: currentColor; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.tag[aria-pressed="true"] { background: var(--orange); border-color: var(--orange); color: #000; }
.tag[aria-pressed="true"] svg { width: 1rem; margin-right: .4rem; }
.tag:hover:not([aria-pressed="true"]) { border-color: var(--fg); }

.field { width: 100%; max-width: 30rem; }
.field__label { display: block; font-size: .8125rem; color: var(--fg-2); margin-bottom: .5rem; }
.field__row { position: relative; display: flex; gap: .5rem; }
.field__input { flex: 1; min-width: 0; min-height: 48px; padding: .75rem 2.5rem .75rem 1rem; border-radius: var(--radius); border: 1px solid var(--line-strong); background: var(--bg); color: var(--fg); transition: border-color 250ms; }
.field__input::placeholder { color: var(--fg-3); opacity: 1; }
.field__input:focus { outline: none; border-color: var(--orange); box-shadow: 0 0 0 1px var(--orange); }
.field__input[aria-invalid="true"] { border-color: var(--orange); border-width: 2px; }
.field__check { position: absolute; top: 50%; right: 6.1rem; width: 1.2rem; height: 1.2rem; transform: translateY(-50%); pointer-events: none; }
.field__check svg { width: 100%; height: 100%; }
.field__check path { fill: none; stroke: var(--orange); stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 24; stroke-dashoffset: 24; transition: stroke-dashoffset 500ms var(--ease-out); }
.field.is-valid .field__check path { stroke-dashoffset: 0; }
.field__msg { font-size: .8125rem; color: var(--fg-3); margin-top: .5rem; min-height: 1.3em; }
.field.is-error .field__msg { color: var(--accent-ink); }
.field.is-valid .field__msg { color: var(--fg); }

.icons-lab { margin-top: clamp(3.5rem, 7vw, 6rem); }
.icons-lab__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 1rem 3rem; margin-bottom: 1.75rem; }
.icons-lab__head h3 { font-size: clamp(1.75rem, 1.3rem + 1.6vw, 2.75rem); margin-bottom: .75rem; }
.icons-lab__head p { color: var(--fg-2); font-size: .9375rem; max-width: 40rem; }
.icons-lab__credit { font-size: .75rem !important; text-align: right; color: var(--fg-3) !important; }
.icons-lab__credit span { color: var(--fg-3); }
.icons-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: .75rem; }
.icon-tile { position: relative; display: grid; grid-template-rows: 1fr auto; justify-items: center; gap: 1rem; padding: 2rem 1rem 1.1rem; min-height: 12rem; border-radius: var(--radius-card); border: 1px solid var(--line); background: var(--bg); color: var(--orange); transition: border-color 300ms; -webkit-tap-highlight-color: transparent; }
.icon-tile:hover, .icon-tile:focus-visible { border-color: var(--fg-3); }
.icon-tile svg { width: 64px; height: 64px; align-self: center; overflow: visible; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.icon-tile__name { font-size: .875rem; color: var(--fg); }
.icon-tile__tech { font-size: .6875rem; color: var(--fg-3); letter-spacing: .04em; }
.icon-tile__label { display: grid; justify-items: center; gap: .1rem; text-align: center; }
@media (max-width: 1100px) { .icons-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 520px) { .icons-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* ==========================================================================
   06 — APPLICATIONS
   ========================================================================== */
.formats { display: flex; gap: .5rem; overflow-x: auto; padding-bottom: .5rem; margin-bottom: 1.5rem; scrollbar-width: thin; scrollbar-color: var(--line) transparent; }
.format-btn { flex: none; display: inline-flex; align-items: center; gap: .65rem; min-height: 44px; padding: .45rem 1rem .45rem .75rem; border-radius: 999px; border: 1px solid var(--line-strong); background: var(--bg); color: var(--fg-2); font-size: .8125rem; transition: border-color 300ms, color 300ms; }
.format-btn i { display: block; border: 1.5px solid currentColor; border-radius: 3px; flex: none; }
.format-btn[aria-selected="true"] { border-color: var(--orange); color: var(--fg); }
.format-btn[aria-selected="true"] i { border-color: var(--orange); background: rgba(254,89,24,.2); }
.format-btn:hover { color: var(--fg); }

.app-stage { position: relative; height: clamp(26rem, 62vh, 42rem); border-radius: var(--radius-lg); background: repeating-linear-gradient(135deg, var(--stripe-a) 0 14px, var(--stripe-b) 14px 28px); border: 1px solid var(--line); display: grid; place-items: center; overflow: hidden; perspective: 1600px; }
.app-frame { position: relative; width: 640px; height: 360px; border-radius: 14px; background: var(--bg); box-shadow: 0 0 0 1px var(--frame-edge), var(--frame-shadow); overflow: hidden; container-type: size; transform-style: preserve-3d; }
.app-frame__chrome { position: absolute; z-index: 5; inset: 0 0 auto 0; height: 7cqh; min-height: 18px; display: none; align-items: center; gap: .9cqw; padding: 0 1.6cqw; background: var(--surface-2); border-bottom: 1px solid var(--line); }
.app-frame__chrome i { width: 1cqw; height: 1cqw; min-width: 6px; min-height: 6px; border-radius: 50%; background: var(--line); border: 1px solid var(--line); }
.app-frame__chrome span { margin-left: 2cqw; font-size: max(9px, 1.4cqw); color: var(--fg-3); padding: .2em 1.2em; border-radius: 99px; background: var(--bg); }
.app-frame[data-format="web"] .app-frame__chrome { display: flex; }
.app { position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.app > * { position: absolute; margin: 0; }
.app__img { inset: 0; overflow: hidden; }
.app__img img { width: 100%; height: 100%; object-fit: cover; object-position: var(--op, 72% 50%); }
.app__img::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, var(--bg) 0%, rgb(var(--bg-rgb) / .7) 40%, transparent 75%); }
.app__logo svg, .app__mark svg { width: 100%; height: auto; overflow: visible; }
.app__eyebrow { font-size: max(8px, 1.6cqmin); color: var(--fg-2); white-space: nowrap; }
.app__head { font-family: var(--font-head); font-weight: 700; letter-spacing: var(--track-display); line-height: .98; color: var(--fg); }
.app__head .stop { color: var(--orange); }
.app__sub { font-family: var(--font-head); font-weight: 400; color: var(--fg-2); line-height: 1.25; }
.app__cta { display: inline-flex; align-items: center; gap: .5em; background: var(--orange); color: #000; border-radius: .6em; padding: .6em 1em; font-weight: 500; white-space: nowrap; }
.app__cta [data-icon] { width: 1.1em; height: 1.1em; }
.app__detail { color: var(--fg-3); white-space: nowrap; }
.app__touch { border: 1px solid var(--orange); background: var(--veil-soft); color: var(--fg); border-radius: 999px; padding: .8em 1.4em; font-size: max(10px, 2.6cqmin); }
.app-card-back { position: absolute; inset: 0; background: var(--bg); color: var(--fg); display: grid; align-content: center; padding: 10cqw; gap: 4cqh; transform: rotateY(180deg); backface-visibility: hidden; -webkit-backface-visibility: hidden; font-size: 4.4cqw; line-height: 1.4; }
.app-card-back p:last-child { color: var(--fg-2); font-size: 3.6cqw; }

.apps__meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem 2rem; align-items: center; margin-top: 1.25rem; }
.apps__info { display: flex; align-items: center; gap: 1rem; max-width: 46rem; }
.apps__info p { color: var(--fg-2); font-size: .9375rem; }
.apps__controls { display: flex; align-items: center; gap: .5rem; }
.apps__dims { font-size: .8125rem; color: var(--fg-3); font-variant-numeric: tabular-nums; margin-right: .75rem; white-space: nowrap; }

/* ==========================================================================
   07 — CLOSING
   ========================================================================== */
.signoff { min-height: 100svh; padding-bottom: 0; display: grid; grid-template-rows: 1fr auto; overflow: hidden; }
.signoff__media { position: absolute; inset: 0; container-type: size; }
/* The whole wide composition is shown, never cropped: the frame keeps the image's own
   2400:1340 proportions, fits within the section and anchors to the right, so the mark
   sits right and the headline gets the open space on the left. Edges feather into the canvas. */
.signoff__art { position: absolute; right: 0; width: min(76cqw, 100cqh * 1.791); aspect-ratio: 2400 / 1340; top: max(0px, calc(46cqh - min(76cqw / 1.791, 100cqh) / 2));
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 12%, #000 86%, transparent 100%), linear-gradient(90deg, transparent 0%, #000 22%);
  mask-image: linear-gradient(180deg, transparent 0%, #000 12%, #000 86%, transparent 100%), linear-gradient(90deg, transparent 0%, #000 22%);
  -webkit-mask-composite: source-in; mask-composite: intersect; }
/* The mark occupies ~46–81% of the composition's width, so the frame is sized to keep it clear of the copy. */
@media (max-width: 1439px) { .signoff__art { width: min(70cqw, 100cqh * 1.791); top: max(0px, calc(46cqh - min(70cqw / 1.791, 100cqh) / 2)); } }
.signoff__img { position: absolute; inset: 0; width: 100%; height: 100%; transition: opacity .7s var(--ease-out); }
[data-theme="light"] .signoff__img--dark, :root:not([data-theme="light"]) .signoff__img--light { opacity: 0; }
/* Portrait tablets and phones: the image sits above the copy, full composition, no overlap. */
@media (max-width: 1100px) and (min-height: 501px) {
  .signoff__art { width: 100cqw; right: 0; top: var(--header-h); -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 10%, #000 84%, transparent 100%); mask-image: linear-gradient(180deg, transparent 0%, #000 10%, #000 84%, transparent 100%); }
  .signoff .signoff__inner { align-self: start; padding-top: calc(var(--header-h) + 50vw); }
}
@media (max-width: 760px) and (min-height: 501px) {
  /* Phones: scaled so the mark reads, still proportional; the negative space on the left falls off-canvas. */
  .signoff__art { width: 175cqw; right: -7cqw; }
  .signoff .signoff__inner { padding-top: calc(var(--header-h) + 92vw); }
}
/* Short landscape phones keep the side-by-side composition. */
@media (max-height: 500px) { .signoff__art { width: min(62cqw, 100cqh * 1.791); top: max(0px, calc(46cqh - min(62cqw / 1.791, 100cqh) / 2)); } }
.signoff__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, var(--bg) 0%, rgb(var(--bg-rgb) / .6) 30%, rgb(var(--bg-rgb) / 0) 56%), linear-gradient(0deg, var(--bg) 6%, transparent 36%); }
[data-theme="light"] .signoff__light, [data-theme="light"] .signoff__sweep { display: none; }
.signoff__light { position: absolute; inset: 0; background: radial-gradient(26rem 26rem at var(--lx, 70%) var(--ly, 40%), rgba(254,89,24,.18), transparent 70%); mix-blend-mode: screen; opacity: 0; }
.signoff__sweep { position: absolute; inset: 0; background: linear-gradient(100deg, transparent 35%, rgba(244,243,239,.07) 50%, transparent 65%); transform: translateX(-100%); pointer-events: none; }
.signoff__inner { position: relative; z-index: 2; align-self: center; padding-top: var(--header-h); }
.signoff__title { font-size: clamp(3.2rem, min(1rem + 7vw, 15svh), 8.75rem); line-height: 1; letter-spacing: var(--track-display); max-width: none; margin-bottom: 1.5rem; }
.signoff__sub { font-family: var(--font-head); font-size: clamp(1.15rem, 1rem + .8vw, 1.75rem); line-height: 1.3; margin-bottom: 2.5rem; max-width: 34rem; }
.signoff__contact { display: flex; flex-wrap: wrap; gap: .9rem; align-items: center; }
.email-pill { display: inline-flex; align-items: center; min-height: 3.75rem; border-radius: var(--radius); border: 1px solid var(--line-strong); background: var(--veil-soft); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); max-width: 100%; }
.email-pill__link { display: inline-flex; align-items: center; gap: .7rem; padding: .8rem 1rem .8rem 1.2rem; color: var(--fg); text-decoration: none; font-size: 1rem; overflow-wrap: anywhere; }
.email-pill__link [data-icon] { color: var(--accent-ink); }
.email-pill__link:hover { color: var(--accent-ink); }
.email-pill__copy { align-self: stretch; width: 3.5rem; border: 0; border-left: 1px solid var(--line-strong); background: none; color: var(--fg-2); display: grid; place-items: center; border-radius: 0 var(--radius) var(--radius) 0; }
.email-pill__copy:hover { color: var(--accent-ink); }
.site-foot { position: relative; z-index: 2; border-top: 1px solid var(--line); margin-top: clamp(4rem, 8vw, 6rem); background: rgb(var(--bg-rgb) / .85); }
[data-theme="light"] .site-foot__lockup path { fill: #000; } /* approved Black colourway — identical paths */
.site-foot__inner { display: grid; grid-template-columns: minmax(0, 18rem) minmax(0, 1fr); gap: 2rem 4rem; align-items: center; padding-block: 2.5rem; }
.site-foot__lockup svg { width: 100%; height: auto; overflow: visible; }
.site-foot__text { font-size: .8125rem; color: var(--fg-3); display: grid; gap: .6rem; }
@media (max-width: 760px) { .site-foot__inner { grid-template-columns: 1fr; } .site-foot__lockup { max-width: 13rem; } }

.spring-switch { display: inline-flex; align-items: center; gap: 1rem; min-height: 52px; padding: .5rem; border: 0; background: none; color: var(--fg); font-size: 1rem; }
.spring-switch__track { position: relative; width: 4.25rem; height: 2.4rem; border-radius: 999px; border: 1px solid var(--line-strong); background: var(--bg); transition: border-color 300ms, background-color 300ms; }
.spring-switch__thumb { position: absolute; top: 3px; left: 3px; width: calc(2.4rem - 8px); height: calc(2.4rem - 8px); border-radius: 50%; background: var(--fg-3); }
.spring-switch[aria-checked="true"] .spring-switch__track { border-color: var(--orange); background: var(--orange); }
.spring-switch[aria-checked="true"] .spring-switch__thumb { background: var(--bg); }
.spring-switch__state { min-width: 2.5ch; color: var(--fg-2); font-variant-numeric: tabular-nums; }
.copy-btn { position: relative; display: inline-flex; align-items: center; gap: .75rem; min-height: 52px; padding: .6rem 1.2rem .6rem .9rem; border-radius: var(--radius); border: 1px solid var(--line-strong); background: var(--bg); color: var(--fg); font-size: .9375rem; }
.copy-btn:hover, .copy-btn:focus-visible { border-color: var(--fg); }
.copy-btn__icons { position: relative; width: 22px; height: 22px; color: var(--orange); }
.copy-btn__icons svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.copy-btn code { color: var(--fg); font-size: .9375rem; }

/* ---------- Dialog & toast ---------- */
.credits { max-width: 40rem; width: calc(100% - 2rem); border-radius: var(--radius-lg); border: 1px solid var(--line-strong); background: var(--bg); color: var(--fg); padding: clamp(1.5rem, 4vw, 2.5rem); }
.credits::backdrop { background: rgb(var(--bg-rgb) / .7); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.credits h2 { font-size: 1.75rem; margin-bottom: 1.5rem; }
.credits dl { display: grid; grid-template-columns: 8rem 1fr; gap: .9rem 1.5rem; font-size: .875rem; margin: 0 0 1.5rem; }
.credits dt { color: var(--accent-ink); }
.credits dd { margin: 0; color: var(--fg-2); }
.credits form { margin-top: 1.5rem; }
@media (max-width: 520px) { .credits dl { grid-template-columns: 1fr; gap: .2rem; } .credits dd { margin-bottom: .8rem; } }

.toast { position: fixed; z-index: 150; left: 50%; bottom: 1.5rem; transform: translate(-50%, calc(100% + 2rem)); visibility: hidden; padding: .7rem 1.1rem; border-radius: 999px; background: var(--fg); color: var(--bg); font-size: .875rem; font-weight: 500; display: inline-flex; align-items: center; gap: .5rem; transition: transform 500ms cubic-bezier(.34,1.56,.64,1); pointer-events: none; max-width: calc(100% - 2rem); white-space: nowrap; box-shadow: 0 0 0 1px rgba(0,0,0,.15), 0 12px 30px -10px rgba(0,0,0,.5); }
.toast.is-visible { transform: translate(-50%, 0); visibility: visible; }
.toast [data-icon] { width: 1rem; height: 1rem; color: var(--orange); }

/* ---------- Header on small screens ---------- */
@media (max-width: 760px) {
  .site-header { grid-template-columns: auto 1fr; }
  .site-header__chapter, .site-header__title { display: none; }
  .motion-switch__label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .menu-button__label { display: none; }
  .menu-button { padding: 0; width: 44px; justify-content: center; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .intro__scroll i { animation: none; }
}
.is-reduced .intro__scroll i { animation: none; }
.is-reduced *, .is-reduced *::before, .is-reduced *::after { transition-duration: 1ms !important; }

/* ---------- Forced colours ---------- */
@media (forced-colors: active) {
  .btn, .chip, .tag, .key, .transport__btn { border: 1px solid ButtonText; }
  .segmented__pill { background: Highlight; }
}

/* ==========================================================================
   06 — Format engine layouts (positions in % of frame, type in container units)
   Every element exists in every format; off-format elements fade to 0.
   ========================================================================== */
.app > * { opacity: 0; pointer-events: none; left: 40%; top: 40%; }
.app__img { left: 0; top: 0; width: 100%; height: 100%; }
.app__logo { width: 16%; }
.app__logo svg + svg { display: none; }
.app__mark { width: 30%; }
.app__head { width: 50%; font-size: 6cqw; }
.app__sub { width: 40%; font-size: 2cqw; }
.app__cta { font-size: 1.6cqw; }
.app__detail { font-size: 1.1cqw; }
.app__eyebrow { font-size: 1.2cqw; }
.app .is-on { opacity: 1; pointer-events: auto; }

/* Website hero 16:9 */
.app-frame[data-format="web"] .app__img { left: 36%; top: 7%; width: 64%; height: 93%; --op: 80% 50%; }
.app-frame[data-format="web"] .app__logo { left: 5%; top: 15%; width: 14%; }
.app-frame[data-format="web"] .app__eyebrow { left: 5%; top: 33%; font-size: 1.2cqw; }
.app-frame[data-format="web"] .app__head { left: 5%; top: 38.5%; width: 50%; font-size: 6.2cqw; }
.app-frame[data-format="web"] .app__sub { left: 5%; top: 66%; width: 40%; font-size: 1.8cqw; }
.app-frame[data-format="web"] .app__cta { left: 5%; top: 78%; font-size: 1.4cqw; }
/* Presentation title 16:9 — after the guidelines cover */
.app-frame[data-format="slides"] .app__img { left: 40%; top: 0; width: 60%; height: 100%; --op: 82% 50%; }
.app-frame[data-format="slides"] .app__logo { left: 5%; top: 11%; width: 14%; }
.app-frame[data-format="slides"] .app__head { left: 5%; top: 30%; width: 52%; font-size: 8.6cqw; }
.app-frame[data-format="slides"] .app__sub { left: 5%; top: 64%; width: 36%; font-size: 1.9cqw; }
.app-frame[data-format="slides"] .app__detail { left: 5%; top: 90%; font-size: max(8px, 1cqw); }
/* Exhibition touchscreen 9:16 */
.app-frame[data-format="touch"] .app__img { left: 0; top: 0; width: 100%; height: 56%; --op: 80% 50%; }
.app-frame[data-format="touch"] .app__logo { left: 8%; top: 5%; width: 44%; }
.app-frame[data-format="touch"] .app__head { left: 8%; top: 54%; width: 84%; font-size: 9.6cqw; }
.app-frame[data-format="touch"] .app__sub { left: 8%; top: 78%; width: 80%; font-size: 3.8cqw; }
.app-frame[data-format="touch"] .app__touch { left: 8%; top: 86%; width: 84%; font-size: 4cqw; }
/* Social 4:5 */
.app-frame[data-format="social"] .app__img { left: 0; top: 0; width: 100%; height: 72%; --op: 50% 50%; }
.app-frame[data-format="social"] .app__logo { left: 7%; top: 6%; width: 32%; }
.app-frame[data-format="social"] .app__head { left: 7%; top: 63%; width: 86%; font-size: 9.6cqw; }
.app-frame[data-format="social"] .app__detail { left: 7%; top: 91%; font-size: 2.8cqw; }
/* Digital signage 32:9 */
.app-frame[data-format="signage"] .app__img { left: 64%; top: 0; width: 36%; height: 100%; --op: 50% 45%; }
.app-frame[data-format="signage"] .app__logo { left: 2.5%; top: 36%; width: 9%; }
.app-frame[data-format="signage"] .app__head { left: 15%; top: 26%; width: 48%; font-size: 3.3cqw; }
.app-frame[data-format="signage"] .app__detail { left: 15%; top: 76%; font-size: .9cqw; }
/* Business card — as shown in the guidelines (editorial lockup on black) */
.app-frame[data-format="card"] .app__logo { left: 22%; top: 24%; width: 56%; }
.app-frame[data-format="card"] .app__logo svg:first-child { display: none; }
.app-frame[data-format="card"] .app__logo svg + svg { display: block; }
.app-frame[data-format="card"] .app__detail { left: 7%; top: 86%; font-size: 2.2cqw; }
/* Motion title 16:9 */
.app-frame[data-format="motion"] .app__mark { left: 34%; top: 16%; width: 32%; }
.app-frame[data-format="motion"] .app__head { left: 10%; top: 66%; width: 80%; font-size: 5.4cqw; text-align: center; }
/* Email header 600×240 */
.app-frame[data-format="email"] .app__img { left: 52%; top: 0; width: 48%; height: 100%; --op: 70% 50%; }
.app-frame[data-format="email"] .app__logo { left: 5%; top: 14%; width: 22%; }
.app-frame[data-format="email"] .app__head { left: 5%; top: 38%; width: 52%; font-size: 3.9cqw; }
.app-frame[data-format="email"] .app__cta { left: 5%; top: 72%; font-size: 2.2cqw; }
/* Image overlays per orientation */
.app-frame[data-format="touch"] .app__img::after, .app-frame[data-format="social"] .app__img::after { background: linear-gradient(0deg, var(--bg) 0%, rgb(var(--bg-rgb) / .35) 35%, transparent 70%); }
.app-frame[data-format="signage"] .app__img::after { background: linear-gradient(90deg, var(--bg) 0%, transparent 45%); }
.app__touch.is-on { animation: touchpulse 2.2s ease-in-out infinite; }
@keyframes touchpulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(254,89,24,.45); } 50% { box-shadow: 0 0 0 1.4cqw rgba(254,89,24,0); } }
.is-reduced .app__touch.is-on { animation: none; }
.app-frame[data-format="card"], .app-frame[data-format="touch"], .app-frame[data-format="motion"] { cursor: pointer; }
@media (max-width: 760px) {
  .apps__info { flex-direction: column; align-items: flex-start; gap: .6rem; }
  .apps__controls { flex-wrap: wrap; width: 100%; }
  .apps__dims { width: 100%; margin: 0 0 .25rem; }
  .app-stage { height: clamp(24rem, 70vh, 34rem); }
  .geo-scroll__stage { overflow: hidden; }
  .intro__skip { bottom: auto; top: calc(var(--header-h) + 1rem); }
}

@media (min-width: 760px) and (max-width: 1100px) {
  .intro__media img { opacity: .55; object-position: 85% 50%; }
}
@media (max-width: 520px) {
  .email-pill__link { font-size: .875rem; gap: .5rem; padding-inline: .9rem .7rem; }
}

/* ==========================================================================
   Theme system — component specifics
   ========================================================================== */
.is-theming, .is-theming *, .is-theming *::before, .is-theming *::after {
  transition: background-color .55s var(--ease-out), color .55s var(--ease-out), border-color .55s var(--ease-out), fill .55s var(--ease-out), stroke .55s var(--ease-out), box-shadow .55s var(--ease-out), opacity .55s var(--ease-out) !important;
}

/* Header theme switch */
.theme-switch { display: inline-flex; align-items: center; gap: .5rem; min-height: 44px; padding: 0 .75rem 0 .6rem; border: 1px solid var(--line-strong); border-radius: 999px; background: var(--veil-soft); color: var(--fg); font-size: .8125rem; }
.theme-switch:hover { border-color: var(--fg); }
.theme-switch__icon { width: 18px; height: 18px; display: block; color: var(--orange); }
.theme-switch__icon svg { width: 100%; height: 100%; overflow: visible; }
.theme-switch .ts-sun, .theme-switch .ts-moon { transition: opacity .4s var(--ease-out), transform .6s var(--ease-out); transform-origin: 12px 12px; }
[data-theme="dark"] .theme-switch .ts-sun, :root:not([data-theme]) .theme-switch .ts-sun { opacity: 0; transform: rotate(-90deg) scale(.5); }
[data-theme="light"] .theme-switch .ts-moon { opacity: 0; transform: rotate(90deg) scale(.5); }
@media (max-width: 760px) { .theme-switch__label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); } .theme-switch { padding: 0; width: 44px; justify-content: center; } }

/* Approved lockups: on light canvases the inline artwork takes the approved Black colourway
   (identical path data to the supplied Black SVG files). */
[data-theme="light"] .lockup-adaptive path { fill: #000; }

/* Themed imagery: both layers stacked, cross-faded — no layout shift. Light art is
   multiplied onto the white canvas so its studio white becomes the page itself. */
.intro__art { position: absolute; inset: 0; }
.themed-img { position: absolute; inset: 0; display: block; transition: opacity .7s var(--ease-out); }
.themed-img img { width: 100%; height: 100%; object-fit: cover; object-position: 72% 50%; }
.themed-img--light img { object-position: 78% 50%; }
[data-theme="light"] .themed-img--dark { opacity: 0; }
:root:not([data-theme="light"]) .themed-img--light { opacity: 0; }
[data-theme="light"] .intro__light { display: none; }
[data-theme="light"] .intro__media::after { background: linear-gradient(90deg, #FFF 0%, rgba(255,255,255,.88) 30%, rgba(255,255,255,0) 60%), linear-gradient(0deg, #FFF 0%, rgba(255,255,255,0) 26%), linear-gradient(180deg, #FFF 0%, rgba(255,255,255,0) 14%); }
@media (max-width: 759px) {
  .themed-img img { object-position: 78% 40%; }
  [data-theme="light"] .intro__media::after { background: linear-gradient(0deg, #FFF 10%, rgba(255,255,255,.7) 55%, rgba(255,255,255,.2) 100%); }
}
@media (min-width: 760px) and (max-width: 1100px) { .themed-img--dark { opacity: .55; } [data-theme="light"] .themed-img--light { opacity: .6; } }

/* Chapter labels: the number stays orange in both themes */
.chapter-head__num span { color: var(--orange); }

/* Logo lab: labels on the black preview canvas stay light in both themes */
.logo-stage[data-canvas="black"] .key--approved { color: #F4F3EF; border-color: #F4F3EF; }
.logo-stage[data-canvas="black"] { border-color: var(--line); }
/* The overview strip shows the supplied orange + white lockups, so it keeps a black panel in light mode */
[data-theme="light"] .logo-strip { border-top: 0; gap: .75rem; }
[data-theme="light"] .logo-strip__item { background: #000; border-radius: var(--radius-card); border: 0; padding: 1.25rem 1.5rem .75rem; color: #B7B7B7; }
[data-theme="light"] .logo-strip__item:first-child { padding-left: 1.5rem; }
[data-theme="light"] .logo-strip__item figcaption { color: #B7B7B7; }

/* Applications: frames follow the theme; the business card is always black, as in the guidelines */
.app-frame[data-format="card"], .app-card-back { background: #000; color: #F4F3EF; }
[data-theme="light"] .app-frame[data-format="card"] { box-shadow: 0 30px 70px -30px rgba(0,0,0,.45); }

/* Closing: follows the theme, each with its own image */
.signoff { background: var(--bg); color: var(--fg); }
.scope-dark, .site-header { color: var(--fg); }
@media (max-width: 700px) { .type__giant { display: none; } }