/* ---------------------------------------------------------------
   Osquare. Base, layout, components, chapters.
   Content is fully readable with JavaScript off. Motion is added
   only when <html class="js"> is present and the viewer allows it.
   --------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--ink-0);
  color: var(--text-on-ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1.2em; }
h1, h2, h3, h4 { margin: 0; font-weight: 300; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: var(--accent); color: var(--ink-0); }
:focus-visible { outline: 1px solid var(--accent); outline-offset: 4px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- The studio: ink, a drafting grid, a torch at the cursor ---------- */
body { background: var(--ink-0); }
.studio { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; --px: 50vw; --py: 40vh; }
.studio__base, .studio__torch {
  position: absolute; inset: -60px;
  background-image:
    linear-gradient(rgba(233,230,223,0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(233,230,223,0.22) 1px, transparent 1px),
    linear-gradient(rgba(233,230,223,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(233,230,223,0.06) 1px, transparent 1px);
  background-size: 240px 240px, 240px 240px, 48px 48px, 48px 48px;
  background-position: 30px 30px;
}
.studio__base { opacity: 0.22; }
.studio__torch {
  opacity: 0.9;
  -webkit-mask-image: radial-gradient(420px 420px at calc(var(--px) + 60px) calc(var(--py) + 60px), #000, transparent 70%);
  mask-image: radial-gradient(420px 420px at calc(var(--px) + 60px) calc(var(--py) + 60px), #000, transparent 70%);
}
.studio__vignette { position: absolute; inset: 0; background: radial-gradient(ellipse 80% 70% at 50% 40%, transparent 40%, rgba(7,9,12,0.7) 100%); }
main { position: relative; z-index: 1; }
.chapter:not(.paper) { background: transparent; }
.site-footer { position: relative; z-index: 1; background: var(--ink-0); }
.site-header.is-scrolled { background: rgba(7,9,12,0.6); }

/* ---------- Typography ---------- */
.kicker {
  font-family: var(--font-display);
  font-size: var(--fs-kicker);
  font-weight: 500;
  letter-spacing: var(--track-kicker);
  text-transform: uppercase;
  color: var(--text-on-ink-muted);
  display: inline-flex; align-items: center; gap: 0.9em;
}
.kicker::before { content: ""; width: 1.6em; height: 1px; background: var(--accent); }
.kicker.no-rule::before { display: none; }
.display {
  font-family: var(--font-display);
  font-size: var(--fs-display);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: var(--track-display);
  text-transform: uppercase;
}
.statement {
  font-family: var(--font-display);
  font-size: var(--fs-statement);
  font-weight: 300;
  line-height: 1.22;
  letter-spacing: var(--track-statement);
  text-transform: uppercase;
}
.title {
  font-family: var(--font-display);
  font-size: var(--fs-title);
  font-weight: 300;
  line-height: 1.12;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.lead { font-size: var(--fs-lead); line-height: 1.55; color: var(--text-on-ink); max-width: var(--measure); }
.body { max-width: var(--measure); color: var(--text-on-ink-muted); }
.body strong { color: var(--text-on-ink); font-weight: 500; }
.numeral {
  font-family: var(--font-display);
  font-size: var(--fs-numeral);
  font-weight: 200;
  line-height: 0.9;
  color: var(--text-on-ink-faint);
  letter-spacing: -0.02em;
}
.mono { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.04em; }
.accent { color: var(--accent); }
.line { display: block; }

/* ---------- Grain (static, fixed, cheap) ---------- */
.grain {
  position: fixed; inset: -10%; z-index: var(--z-grain); pointer-events: none;
  opacity: 0.055;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.6 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-size: 220px 220px;
  mix-blend-mode: overlay;
}

/* ---------- Header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: var(--z-nav);
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.4rem var(--gutter);
  transition: background var(--dur-base) var(--ease-out), padding var(--dur-base) var(--ease-out), border-color var(--dur-base);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  padding: 0.9rem var(--gutter);
  background: rgba(7, 9, 12, 0.72);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--ink-line);
}
.wordmark {
  font-family: var(--font-display); font-weight: 400; font-size: 1.05rem;
  letter-spacing: 0.34em; text-transform: uppercase; display: inline-flex; align-items: baseline; gap: 0.15em;
}
.wordmark__glyph { width: 20px; height: 20px; margin-right: 0.55em; transform: translateY(0.1em); }
.site-nav { display: flex; align-items: center; gap: 2.2rem; }
.site-nav a {
  font-family: var(--font-display); font-size: var(--fs-kicker); letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--text-on-ink-muted); transition: color var(--dur-fast);
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--text-on-ink); }
.btn {
  display: inline-flex; align-items: center; gap: 0.8em;
  font-family: var(--font-display); font-size: var(--fs-kicker); letter-spacing: 0.22em; text-transform: uppercase;
  padding: 0.95em 1.6em; border: 1px solid var(--ink-line-strong); border-radius: 999px;
  color: var(--text-on-ink); transition: border-color var(--dur-fast), background var(--dur-fast), color var(--dur-fast), transform var(--dur-fast);
}
.btn:hover { border-color: var(--accent); background: var(--accent-soft); }
.btn.solid { background: var(--text-on-ink); color: var(--ink-0); border-color: var(--text-on-ink); }
.btn.solid:hover { background: var(--accent); border-color: var(--accent); color: var(--ink-0); }
.btn .arrow { display: inline-block; transition: transform var(--dur-fast) var(--ease-out); }
.btn:hover .arrow { transform: translateX(4px); }
.link {
  display: inline-flex; align-items: center; gap: 0.6em;
  font-family: var(--font-display); font-size: var(--fs-kicker); letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--text-on-ink); padding-bottom: 0.4em; border-bottom: 1px solid var(--ink-line-strong);
  transition: border-color var(--dur-fast), color var(--dur-fast);
}
.link:hover { border-color: var(--accent); color: var(--accent); }
.menu-toggle { display: none; font-family: var(--font-display); font-size: var(--fs-kicker); letter-spacing: 0.22em; text-transform: uppercase; }

/* ---------- Chapter rail (right edge, desktop) ---------- */
.chapter-rail {
  position: fixed; right: calc(var(--gutter) * 0.6); top: 50%; transform: translateY(-50%);
  z-index: var(--z-chapters); display: flex; flex-direction: column; gap: 1.1rem; list-style: none; margin: 0; padding: 0;
}
.chapter-rail a { display: flex; align-items: center; gap: 0.8rem; justify-content: flex-end; color: var(--text-on-ink-faint); }
.chapter-rail .label {
  font-family: var(--font-display); font-size: 0.625rem; letter-spacing: 0.24em; text-transform: uppercase;
  opacity: 0; transform: translateX(6px); transition: opacity var(--dur-fast), transform var(--dur-fast) var(--ease-out);
}
.chapter-rail .dot { width: 5px; height: 5px; border-radius: 50%; background: currentColor; transition: transform var(--dur-fast), background var(--dur-fast); }
.chapter-rail:hover a.is-active .label, .chapter-rail a:hover .label { opacity: 1; transform: none; }
.chapter-rail a.is-active { color: var(--accent); }
.chapter-rail a.is-active .dot { transform: scale(1.6); }
.on-paper .chapter-rail a { color: var(--text-on-paper-faint); }
.on-paper .chapter-rail a.is-active { color: var(--text-on-paper); }

/* ---------- Layout primitives ---------- */
.wrap { width: min(100% - 2 * var(--gutter), var(--max-w)); margin-inline: auto; }
.chapter { position: relative; padding: var(--chapter-pad) 0; }
.chapter + .chapter { border-top: 1px solid var(--ink-line); }
.chapter-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 3rem; align-items: end; margin-bottom: clamp(3rem, 6vw, 6rem); }
.chapter-head .title { max-width: 14em; }
.chapter-head .kicker { margin-bottom: 1.4rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(2rem, 5vw, 6rem); }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(2rem, 4vw, 4rem); }
.rule { height: 1px; background: var(--ink-line); border: 0; margin: 0; }

/* Paper chapters flip the palette */
.paper { background: var(--paper-0); color: var(--text-on-paper); }
.paper .kicker { color: var(--text-on-paper-muted); }
.paper .body { color: var(--text-on-paper-muted); }
.paper .body strong { color: var(--text-on-paper); }
.paper .lead { color: var(--text-on-paper); }
.paper .numeral { color: var(--text-on-paper-faint); }
.paper .btn { border-color: var(--paper-line-strong); color: var(--text-on-paper); }
.paper .btn:hover { border-color: var(--accent); }
.paper .btn.solid { background: var(--text-on-paper); color: var(--paper-0); border-color: var(--text-on-paper); }
.paper .link { color: var(--text-on-paper); border-color: var(--paper-line-strong); }
.paper .rule { background: var(--paper-line); }
.paper.chapter + .chapter, .chapter + .paper.chapter { border-top-color: var(--paper-line); }

/* ---------- Full-bleed imagery ---------- */
.scene { position: relative; overflow: hidden; isolation: isolate; }
.scene__img {
  position: absolute; left: 0; top: -8%; z-index: -2;
  width: 100%; height: 116%; object-fit: cover; object-position: center;
  will-change: transform;
}
.scene__scrim {
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(to bottom, rgba(7,9,12,0.55) 0%, rgba(7,9,12,0.18) 35%, rgba(7,9,12,0.28) 65%, var(--ink-0) 100%);
}
.scene--soft .scene__scrim {
  background: linear-gradient(to bottom, var(--ink-0) 0%, rgba(7,9,12,0.5) 30%, rgba(7,9,12,0.5) 70%, var(--ink-0) 100%);
}
.scene--paper .scene__scrim {
  background: linear-gradient(to bottom, var(--paper-0) 0%, rgba(244,242,237,0.55) 40%, rgba(244,242,237,0.7) 100%);
}

/* ---------- Hero ---------- */
.hero { min-height: 100svh; display: grid; place-items: center; text-align: center; padding: 8rem var(--gutter) 6rem; }
.hero__mark { display: inline-flex; align-items: center; gap: 1.6rem; }
.hero__glyph { width: 46px; height: 46px; flex: none; }
.hero__divider { width: 1px; height: 46px; background: var(--ink-line-strong); }
.hero__name {
  font-family: var(--font-display); font-weight: 300; font-size: clamp(1.6rem, 1rem + 3.2vw, 3.6rem);
  letter-spacing: 0.42em; text-transform: uppercase; padding-left: 0.42em; line-height: 1;
}
.hero .scene__scrim { background: radial-gradient(ellipse 60% 45% at 50% 52%, rgba(7,9,12,0.5), rgba(7,9,12,0) 100%), linear-gradient(to bottom, rgba(7,9,12,0.55) 0%, rgba(7,9,12,0.15) 35%, rgba(7,9,12,0.3) 65%, var(--ink-0) 100%); }
.hero__mark, .hero__tag { text-shadow: 0 2px 24px rgba(0,0,0,0.55); }
.hero__tag { margin-top: 1.6rem; color: rgba(235,232,225,0.72); font-family: var(--font-display); font-size: 0.8rem; letter-spacing: 0.3em; text-transform: uppercase; }
.hero__foot {
  position: absolute; left: var(--gutter); right: var(--gutter); bottom: 2rem;
  display: flex; justify-content: space-between; align-items: flex-end;
  font-family: var(--font-display); font-size: 0.625rem; letter-spacing: 0.26em; text-transform: uppercase; color: var(--text-on-ink-muted);
}
.hero__foot .scroll-cue { display: inline-flex; align-items: center; gap: 0.9rem; }
.hero__foot .scroll-cue i { display: block; width: 1px; height: 38px; background: linear-gradient(to bottom, var(--accent), transparent); transform-origin: top; }
.js .hero__foot .scroll-cue i { animation: cue 2.4s var(--ease-in-out) infinite; }
@keyframes cue { 0% { transform: scaleY(0); } 45% { transform: scaleY(1); transform-origin: top; } 46% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }
@media (prefers-reduced-motion: reduce) { .js .hero__foot .scroll-cue i { animation: none; } }

/* ---------- Thesis ---------- */
.thesis { min-height: 90svh; display: grid; align-content: center; }
.thesis .statement { max-width: 24ch; }
.thesis .statement .line { overflow: hidden; }
.thesis__grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 4rem; align-items: start; }
.thesis__grid > div:last-child { padding-top: 0.5rem; }
.facts { display: grid; gap: 1.1rem; border-top: 1px solid var(--ink-line); padding: 1.5rem 0 0; margin: 3rem 0 0; list-style: none; }
.facts li { display: grid; grid-template-columns: 8em 1fr; gap: 1rem; font-size: 0.9rem; }
.facts .k { font-family: var(--font-display); font-size: var(--fs-kicker); letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-on-ink-faint); padding-top: 0.2em; }
.facts .v { color: var(--text-on-ink-muted); }

/* ---------- Disciplines (01) ---------- */
.disciplines { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr); gap: clamp(2rem, 6vw, 8rem); align-items: start; }
.disciplines__sticky { position: sticky; top: 8rem; }
.disciplines__sticky .title { margin: 1.4rem 0 1.6rem; }
.discipline { display: grid; grid-template-columns: 5rem minmax(0, 1fr); gap: 1.5rem; padding: clamp(2rem, 4vw, 3.5rem) 0; border-top: 1px solid var(--ink-line); }
.discipline:last-child { border-bottom: 1px solid var(--ink-line); }
.discipline .numeral { font-size: clamp(2rem, 1.4rem + 2vw, 3.4rem); }
.discipline .statement { font-size: clamp(1.15rem, 1rem + 0.9vw, 1.75rem); margin-bottom: 1rem; }
.discipline .body { font-size: 0.98rem; }
.tags { display: flex; flex-wrap: wrap; gap: 0.5rem 1.4rem; margin: 1.2rem 0 0; padding: 0; list-style: none; }
.tags li { font-family: var(--font-display); font-size: 0.625rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--text-on-ink-faint); }

/* ---------- Product panels (02) ---------- */
.products-intro { padding-bottom: 0; }
.product { min-height: 100svh; display: grid; align-items: center; padding: clamp(5rem, 10vw, 9rem) 0; }
.product__grid { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.25fr); gap: clamp(2.5rem, 6vw, 7rem); align-items: center; }
.product--flip .product__grid { grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.9fr); }
.product--flip .product__copy { order: 2; }
.product__copy .statement { margin: 1.2rem 0 1.4rem; max-width: 18ch; font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.6rem); }
.product__frame { position: relative; border-radius: 6px; overflow: hidden; border: 1px solid var(--ink-line); box-shadow: 0 40px 100px -40px rgba(0,0,0,0.9); background: var(--ink-2); }
.product__frame img { width: 100%; height: auto; will-change: transform; }
.product__frame--light { background: var(--paper-0); border-color: var(--paper-line); }
.status { display: inline-flex; align-items: center; gap: 0.6em; font-family: var(--font-display); font-size: 0.625rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--text-on-ink-muted); }
.status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--text-on-ink-faint); }
.status--live::before { background: #6fd39a; box-shadow: 0 0 0 4px rgba(111,211,154,0.18); }
.status--soon::before { background: var(--accent); }
.status--preview::before { background: #7fb2ff; }
.product__meta { display: grid; grid-template-columns: repeat(3, auto); gap: 2rem; margin-top: 2rem; padding-top: 1.4rem; border-top: 1px solid var(--ink-line); width: fit-content; }
.product__meta dt, .product__meta dd { margin: 0; }
.product__meta .k { font-family: var(--font-display); font-size: 0.625rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--text-on-ink-faint); display: block; margin-bottom: 0.3em; }
.product__meta .v { font-size: 0.9rem; color: var(--text-on-ink-muted); }
.product__actions { display: flex; gap: 1.4rem; align-items: center; margin-top: 2rem; flex-wrap: wrap; }

/* ---------- Case studies (03) ---------- */
.cases { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--paper-line); border: 1px solid var(--paper-line); }
.case { background: var(--paper-0); padding: clamp(2rem, 4vw, 3.5rem); display: grid; grid-template-rows: auto 1fr auto; gap: 1.5rem; min-height: 24rem; position: relative; transition: background var(--dur-base) var(--ease-out); }
.case:hover { background: var(--paper-1); }
.case__top { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
.case__top .mono { white-space: nowrap; }
.case .title { font-size: clamp(1.4rem, 1.05rem + 1.1vw, 2rem); max-width: 18ch; margin: 1rem 0 1.2rem; }
.case .body { font-size: 0.95rem; }
.case__foot { display: flex; justify-content: space-between; align-items: center; }
.case__foot .mono { color: var(--text-on-paper-faint); }
.case__arrow { width: 2.6rem; height: 2.6rem; border: 1px solid var(--paper-line-strong); border-radius: 50%; display: grid; place-items: center; transition: background var(--dur-fast), color var(--dur-fast), border-color var(--dur-fast); }
.case:hover .case__arrow { background: var(--text-on-paper); color: var(--paper-0); border-color: var(--text-on-paper); }
.case a.cover { position: absolute; inset: 0; }
.track { display: flex; flex-wrap: wrap; gap: 0.8rem 2.4rem; margin-top: 3rem; padding-top: 1.6rem; border-top: 1px solid var(--paper-line); align-items: baseline; }
.track .kicker { margin-right: 1rem; }
.track span { font-family: var(--font-display); font-size: 0.9rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-on-paper-muted); }

/* ---------- Datadog band (04) ---------- */
.band { min-height: 80svh; display: grid; align-items: center; }
.band__grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: clamp(2rem, 6vw, 8rem); align-items: end; }
.band .title { margin: 1.4rem 0 1.6rem; }
.pillars { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; border-top: 1px solid var(--ink-line); }
.pillars li { display: grid; grid-template-columns: 2.5rem 1fr; gap: 1rem; padding: 1.1rem 0; border-bottom: 1px solid var(--ink-line); font-size: 0.95rem; color: var(--text-on-ink-muted); }
.pillars li b { font-weight: 500; color: var(--text-on-ink); display: block; font-family: var(--font-display); letter-spacing: 0.12em; text-transform: uppercase; font-size: 0.8rem; margin-bottom: 0.2em; }
.pillars .mono { color: var(--text-on-ink-faint); padding-top: 0.25em; }
.disclosure { font-size: 0.8rem; color: var(--text-on-ink-faint); max-width: 40em; margin-top: 2rem; }

/* ---------- Phases (05) ---------- */
.phases { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--ink-line); }
.phase { padding: 2.5rem 2rem 2.5rem 0; border-right: 1px solid var(--ink-line); }
.phase:last-child { border-right: 0; }
.phase + .phase { padding-left: 2rem; }
.phase .numeral { font-size: 2.6rem; margin-bottom: 1.6rem; }
.phase .statement { font-size: 1.05rem; letter-spacing: 0.1em; margin-bottom: 0.8rem; }
.phase .body { font-size: 0.93rem; }
.phase .mono { color: var(--text-on-ink-faint); display: block; margin-top: 1.2rem; }

/* ---------- Principles (06) ---------- */
.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(2rem, 4vw, 5rem); }
.principle .numeral { font-size: 1.6rem; font-style: italic; color: var(--accent); margin-bottom: 1.4rem; }
.principle .statement { font-size: clamp(1.15rem, 1rem + 0.8vw, 1.6rem); margin-bottom: 1rem; }
.principle .body { font-size: 0.95rem; }

/* ---------- Quote ---------- */
.quote { text-align: center; padding: var(--chapter-pad) var(--gutter); }
.quote blockquote { margin: 0 auto; max-width: 30ch; font-family: var(--font-display); font-weight: 300; font-size: clamp(1.4rem, 1rem + 1.8vw, 2.6rem); line-height: 1.3; letter-spacing: 0.02em; }
.quote blockquote em { font-style: normal; color: var(--accent); }
.quote cite { display: block; margin-top: 2rem; font-style: normal; font-family: var(--font-display); font-size: var(--fs-kicker); letter-spacing: 0.22em; text-transform: uppercase; color: var(--text-on-ink-muted); }

/* ---------- Contact ---------- */
.contact { min-height: 90svh; display: grid; align-items: center; }
.contact__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(2rem, 6vw, 8rem); }
.contact .display { font-size: clamp(2rem, 1.4rem + 3vw, 4.4rem); max-width: 12ch; margin: 1.4rem 0 1.6rem; }
.contact__details { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.6rem 2rem; margin-top: 3rem; padding-top: 1.6rem; border-top: 1px solid var(--ink-line); }
.contact__details .k { font-family: var(--font-display); font-size: 0.625rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--text-on-ink-faint); display: block; margin-bottom: 0.4em; }
.contact__details .v { font-size: 0.92rem; color: var(--text-on-ink-muted); }
.form { display: grid; gap: 1.6rem; }
.field { display: grid; gap: 0.5rem; }
.field label { font-family: var(--font-display); font-size: 0.625rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--text-on-ink-faint); }
.field input, .field textarea, .field select {
  width: 100%; background: transparent; border: 0; border-bottom: 1px solid var(--ink-line-strong); color: var(--text-on-ink);
  font: inherit; padding: 0.7em 0; border-radius: 0; transition: border-color var(--dur-fast);
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-bottom-color: var(--accent); }
.field textarea { min-height: 6.5em; resize: vertical; }
.field select option { background: var(--ink-2); }
.form__row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.6rem; }
.form__foot { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; }
.form__note { font-size: 0.8rem; color: var(--text-on-ink-faint); max-width: 24em; }
.form__status { font-size: 0.9rem; color: var(--accent); min-height: 1.4em; }
.hp { position: absolute; left: -10000px; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--ink-line); padding: 3rem 0 2.5rem; }
.site-footer .wrap { display: flex; justify-content: space-between; align-items: center; gap: 2rem; flex-wrap: wrap; }
.site-footer .small { font-family: var(--font-display); font-size: 0.625rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--text-on-ink-faint); display: flex; gap: 1.6rem; flex-wrap: wrap; }
.site-footer .small a:hover { color: var(--text-on-ink); }

/* ---------- Motion (only with JS, only if allowed) ---------- */
.js .reveal { opacity: 0; transform: translateY(28px); }
.js .reveal-line > .line > span { display: inline-block; transform: translateY(110%); }
.js .reveal-fade { opacity: 0; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal, .js .reveal-fade { opacity: 1 !important; transform: none !important; }
  .js .reveal-line > .line > span { transform: none !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .chapter-rail { display: none; }
  .phases { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .phase { border-right: 0; border-bottom: 1px solid var(--ink-line); padding-left: 0 !important; }
}
@media (max-width: 860px) {
  .site-nav { display: none; }
  .menu-toggle { display: inline-flex; }
  .site-header.menu-open { -webkit-backdrop-filter: none; backdrop-filter: none; background: transparent; }
  .grain { display: none; }
  .site-header.menu-open .site-nav {
    display: flex; position: fixed; inset: 0; flex-direction: column; justify-content: center; align-items: flex-start;
    gap: 2rem; padding: var(--gutter); background: var(--ink-0); z-index: -1;
  }
  .site-header.menu-open .site-nav a { font-size: 1.4rem; letter-spacing: 0.2em; }
  .chapter-head, .thesis__grid, .disciplines, .product__grid, .band__grid, .contact__grid, .grid-2, .form__row { grid-template-columns: 1fr; }
  .product--flip .product__grid { grid-template-columns: 1fr; }
  .product--flip .product__copy { order: 0; }
  .disciplines__sticky { position: static; }
  .cases, .principles, .grid-3 { grid-template-columns: 1fr; }
  .phases { grid-template-columns: 1fr; }
  .discipline { grid-template-columns: 3.2rem 1fr; }
  .product { min-height: 0; }
  .hero__foot { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .facts li { grid-template-columns: 1fr; gap: 0.2rem; }
  .contact__details { grid-template-columns: 1fr; }
  .product__meta { grid-template-columns: 1fr 1fr; }
  .scene__img { height: 120%; }
}
