/* Layout: one dark page in three acts (Discover · Navigate · Accelerate); a sticky header carries
   where you are and which view you chose. ZySec AI design system v1 tokens, dark-first by design. */
:root {
  --zs-000: #050506; --zs-100: #0c0c10; --zs-200: #121216; --zs-300: #1b1b21; --zs-400: #2a2a31;
  --zs-500: #41403f; --zs-600: #5a5958; --zs-700: #8d8b89; --zs-800: #c9c7c4; --zs-900: #f5f4f2;
  --zs-void: var(--zs-000); --zs-base: var(--zs-100); --zs-graphite: #17171c;
  --zs-ash: var(--zs-700); --zs-ink: var(--zs-900);
  --zs-hairline: rgba(255, 255, 255, 0.08); --zs-hairline-lit: rgba(255, 255, 255, 0.14); --zs-seam: rgba(255, 255, 255, 0.07);
  --zs-field-diagonal: linear-gradient(135deg, #1b1b21, #050506);
  --zs-field-lit: radial-gradient(120% 100% at 80% 0%, #2a2a31, #07070a 60%);
  --zs-field-silver: linear-gradient(180deg, #f5f4f2, #c9c7c4);
  --zs-field-panel: linear-gradient(165deg, #15151a, #0b0b0e);
  --zs-field-button: linear-gradient(180deg, #f7f6f4, #d2d0cd);
  --zs-shadow-tile: 0 1px 0 rgba(255, 255, 255, 0.06) inset, 0 18px 40px -18px rgba(0, 0, 0, 0.8);
  --font-display: "Poppins", "Segoe UI", "Helvetica Neue", system-ui, sans-serif;
  --font-body: "Plus Jakarta Sans", "Segoe UI", "Helvetica Neue", system-ui, sans-serif;
  --zs-space-1: 4px; --zs-space-2: 8px; --zs-space-3: 12px; --zs-space-4: 20px; --zs-space-5: 28px; --zs-space-6: 40px; --zs-space-7: 72px;
  --zs-radius-section: 24px; --zs-radius-panel: 18px; --zs-radius-control: 14px;
  --zs-ease: cubic-bezier(0.22, 1, 0.36, 1); --zs-dur-state: 200ms; --zs-dur-enter: 320ms; --zs-dur-sweep: 600ms;
  --gutter: clamp(20px, 5vw, 72px);
  --measure: 60ch;
  --head-h: 90px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: var(--head-h); }
body {
  margin: 0; background: var(--zs-base); color: var(--zs-ink);
  font: 400 16px/1.8 var(--font-body); -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--font-display); margin: 0; text-wrap: balance; }
p { margin: 0; }
button { font: inherit; color: inherit; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--zs-800); outline-offset: 2px; }
.label { font: 500 11px/1.4 var(--font-body); letter-spacing: 0.22em; text-transform: uppercase; color: var(--zs-ash); }
.wrap { width: min(1200px, 100%); margin-inline: auto; padding-inline: var(--gutter); }
section { position: relative; padding-block: clamp(72px, 12vh, 140px); border-top: 1px solid var(--zs-hairline); }

/* ── nav: a floating glass capsule that condenses into a live status pill ── */
@property --edge { syntax: "<angle>"; inherits: false; initial-value: 0deg; }
.nav { position: fixed; top: calc(env(safe-area-inset-top, 0px) + 14px); left: 0; right: 0; z-index: 30; display: flex; justify-content: center; padding-inline: 16px; pointer-events: none; }
.nav__glass { isolation: isolate; }
.nav__glass {
  pointer-events: auto; position: relative; display: flex; align-items: center; gap: 14px;
  width: min(1160px, 100%); height: 62px; padding: 0 8px 0 24px; border-radius: 999px;
  background: rgba(20, 20, 25, 0.5); -webkit-backdrop-filter: blur(22px) saturate(1.6); backdrop-filter: blur(22px) saturate(1.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.09), inset 0 -1px 0 rgba(0, 0, 0, 0.4), 0 22px 50px -26px rgba(0, 0, 0, 0.95);
  transition: width 720ms var(--zs-ease), height 520ms var(--zs-ease), padding 520ms var(--zs-ease), background 400ms var(--zs-ease), box-shadow 400ms var(--zs-ease);
}
.nav__glass::before { /* a thread of light that travels around the rim */
  content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px; pointer-events: none;
  background: conic-gradient(from var(--edge), transparent 0 64%, rgba(245, 244, 242, 0.08) 72%, rgba(245, 244, 242, 0.85) 80%, rgba(245, 244, 242, 0.08) 88%, transparent 92%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude;
  animation: edge 8s linear infinite;
}
.nav__glass::after { content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent 55%); }
@keyframes edge { to { --edge: 360deg; } }
.nav.compact .nav__glass { width: min(900px, 100%); height: 54px; padding: 0 6px 0 16px; background: rgba(16, 16, 20, 0.66); }
.nav.compact.peek .nav__glass { width: min(1160px, 100%); height: 62px; padding: 0 8px 0 24px; }
.nav.flash .nav__glass { box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 0 0 1px rgba(245, 244, 242, 0.18), 0 0 36px -6px rgba(245, 244, 242, 0.28), 0 22px 50px -26px rgba(0, 0, 0, 0.95); }
.nav__brand { position: relative; z-index: 1; flex: 0 0 auto; display: grid; color: var(--zs-ink); width: 96px; height: 24px; overflow: hidden; transition: width 600ms var(--zs-ease); }
.nav__brand svg { grid-area: 1 / 1; height: 22px; width: auto; display: block; transition: opacity 400ms var(--zs-ease), transform 600ms var(--zs-ease); }
/* compact: the mark sits inside the reading ring; light orbits it, the mark itself stays untouched */
.brandmark { grid-area: 1 / 1; position: relative; width: 40px; height: 40px; display: grid; place-items: center; opacity: 0; transform: scale(0.8); transition: opacity 400ms var(--zs-ease), transform 600ms var(--zs-ease); }
.brandmark::before { content: ""; position: absolute; inset: 4px; border-radius: 50%; background: conic-gradient(from var(--edge), transparent 0 60%, rgba(245, 244, 242, 0.18) 78%, transparent 92%); animation: edge 9s linear infinite; }
.nav__brand .brandmark .markonly { position: relative; height: 18px; width: auto; opacity: 1; transform: none; }
.nav__brand .brandmark .ring { position: absolute; inset: 0; width: 40px; height: 40px; transform: rotate(-90deg); }
.ring .orbit { transform-origin: 13px 13px; animation: orbit 10s linear infinite; }
.ring .orbit circle { fill: var(--zs-ink); filter: drop-shadow(0 0 2px rgba(245, 244, 242, 0.9)); }
@keyframes orbit { to { transform: rotate(360deg); } }
.nav__brand { height: 40px; align-items: center; }
.nav.compact:not(.peek) .nav__brand { width: 40px; }
.nav.compact:not(.peek) .nav__brand .lockup { opacity: 0; }
.nav.compact:not(.peek) .brandmark { opacity: 1; transform: none; }
.nav__mid { position: relative; z-index: 1; flex: 1; min-width: 0; height: 100%; }
.nav__full, .nav__status { position: absolute; inset: 0; display: flex; align-items: center; transition: opacity 380ms var(--zs-ease), transform 520ms var(--zs-ease); }
.nav__full { justify-content: center; gap: 18px; }
.nav__status { opacity: 0; transform: translateY(6px) scale(0.97); pointer-events: none; }
.nav.compact:not(.peek) .nav__full { opacity: 0; transform: translateY(-6px) scale(0.97); pointer-events: none; }
.nav.compact:not(.peek) .nav__status { opacity: 1; transform: none; pointer-events: auto; }
.acts { display: flex; gap: 2px; padding: 4px; border-radius: 999px; background: rgba(255, 255, 255, 0.035); border: 1px solid rgba(255, 255, 255, 0.05); }
.acts a {
  position: relative; display: grid; justify-items: center; gap: 5px; padding: 7px 16px 6px; border-radius: 999px; text-decoration: none;
  font: 600 10.5px/1.2 var(--font-display); letter-spacing: 0.22em; text-transform: uppercase; color: var(--zs-600);
  transition: color var(--zs-dur-state) var(--zs-ease), background var(--zs-dur-state) var(--zs-ease);
}
.acts a:hover { color: var(--zs-800); }
.acts a[aria-current="true"] { color: var(--zs-ink); background: rgba(255, 255, 255, 0.07); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08); }
.acts i { display: block; width: 100%; min-width: 64px; height: 2px; border-radius: 2px; background: rgba(255, 255, 255, 0.08); overflow: hidden; }
.acts i b { display: block; height: 100%; width: 100%; background: linear-gradient(90deg, #8d8b89, #f5f4f2); transform-origin: 0 50%; transform: scaleX(var(--f, 0)); }
.toplink { font: 500 13px/1 var(--font-display); color: var(--zs-800); text-decoration: none; padding: 10px 6px; position: relative; }
.toplink::after { content: ""; position: absolute; left: 6px; right: 6px; bottom: 5px; height: 1px; background: var(--zs-ink); transform: scaleX(0); transform-origin: 0 50%; transition: transform var(--zs-dur-state) var(--zs-ease); }
.toplink:hover { color: var(--zs-ink); }
.toplink:hover::after { transform: scaleX(1); }
.nav__status { justify-content: center; gap: 10px; border: 0; background: none; cursor: pointer; padding: 0 10px; font: 400 13px/1 var(--font-display); color: var(--zs-ash); }
.nav__status:focus-visible { outline-offset: -4px; border-radius: 999px; }
.ring { flex: 0 0 auto; width: 26px; height: 26px; transform: rotate(-90deg); }
.ring circle { fill: none; stroke-width: 2; }
.ring .bg { stroke: rgba(255, 255, 255, 0.12); }
.ring .fg { stroke: var(--zs-ink); stroke-linecap: round; stroke-dasharray: 62.83; stroke-dashoffset: 62.83; filter: drop-shadow(0 0 3px rgba(245, 244, 242, 0.6)); }
.st__act { font: 600 10.5px/1 var(--font-display); letter-spacing: 0.22em; text-transform: uppercase; color: var(--zs-ink); }
.st__sep { color: var(--zs-500); }
.where__roll { display: inline-block; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; min-width: 0; color: var(--zs-800); }
.where__roll span { display: inline-block; }
.where__roll span.roll { animation: roll 460ms var(--zs-ease); }
@keyframes roll { from { transform: translateY(110%); opacity: 0; } to { transform: none; opacity: 1; } }
.st__chev { color: var(--zs-600); font-size: 10px; transition: transform var(--zs-dur-state) var(--zs-ease); }
.nav__status[aria-expanded="true"] .st__chev { transform: rotate(180deg); }
.nav__right { position: relative; z-index: 2; flex: 0 0 auto; display: flex; align-items: center; gap: 6px; }
.nav__sheet {
  pointer-events: auto; position: absolute; top: calc(100% + 10px); left: 50%; transform: translateX(-50%); width: min(520px, calc(100vw - 32px));
  max-height: calc(100vh - 110px); overflow-y: auto;
  padding: 10px; border-radius: 26px; background: rgba(16, 16, 20, 0.78); -webkit-backdrop-filter: blur(24px) saturate(1.5); backdrop-filter: blur(24px) saturate(1.5);
  border: 1px solid rgba(255, 255, 255, 0.12); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 30px 60px -28px rgba(0, 0, 0, 0.95);
  animation: sheet 360ms var(--zs-ease);
}
@keyframes sheet { from { opacity: 0; transform: translate(-50%, -8px) scale(0.98); } to { opacity: 1; transform: translateX(-50%); } }
.sheet__act { display: grid; gap: 2px; padding: 6px; }
.sheet__act + .sheet__act { border-top: 1px solid var(--zs-hairline); }
.sheet__act > p { padding: 6px 10px 4px; }
.sheet__act button { display: flex; align-items: center; gap: 10px; width: 100%; min-height: 40px; padding: 8px 10px; border: 0; border-radius: 12px; background: none; cursor: pointer; text-align: left; font: 400 14px/1.3 var(--font-display); color: var(--zs-ash); }
.sheet__act button::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: rgba(255, 255, 255, 0.15); flex: 0 0 auto; }
.sheet__act button:hover { background: rgba(255, 255, 255, 0.05); color: var(--zs-ink); }
.sheet__act button.on { color: var(--zs-ink); background: rgba(255, 255, 255, 0.06); }
.sheet__act button.on::before { background: var(--zs-ink); box-shadow: 0 0 10px 2px rgba(245, 244, 242, 0.5); }
.sheet__act button.done::before { background: var(--zs-700); }
.viewchip { position: relative; }.viewchip { position: relative; }
.viewchip > button {
  display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.12); border-radius: 999px; background: rgba(255, 255, 255, 0.06); cursor: pointer;
  font: 400 13px/1.2 var(--font-display); color: var(--zs-ash); white-space: nowrap; box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.viewchip > button b { font-weight: 500; color: var(--zs-ink); }
.viewchip > button:hover { border-color: rgba(255, 255, 255, 0.28); }
.menu {
  position: absolute; right: 0; top: calc(100% + 8px); width: min(340px, calc(100vw - 32px)); padding: 6px;
  background: var(--zs-graphite); border: 1px solid var(--zs-hairline-lit); border-radius: var(--zs-radius-panel); box-shadow: var(--zs-shadow-tile);
}
.menu button {
  display: block; width: 100%; text-align: left; padding: 10px 12px; min-height: 44px; border: 0; border-radius: 10px; background: transparent; cursor: pointer;
  font: 400 14px/1.4 var(--font-display); color: var(--zs-ash);
}
.menu button small { display: block; font: 500 10px/1.4 var(--font-body); letter-spacing: 0.2em; text-transform: uppercase; color: var(--zs-600); margin-bottom: 2px; }
.menu button:hover, .menu button[aria-checked="true"] { background: rgba(255, 255, 255, 0.05); color: var(--zs-ink); }
.menu hr { border: 0; border-top: 1px solid var(--zs-hairline); margin: 6px 4px; }

/* ── hero ── */
.hero { border-top: 0; padding-block: clamp(96px, 18vh, 200px) clamp(72px, 12vh, 140px); overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -20%; background: var(--zs-field-lit); opacity: 0.9;
  animation: drift 28s var(--zs-ease) infinite alternate; pointer-events: none;
}
@keyframes drift { from { transform: translate3d(-4%, 0, 0); } to { transform: translate3d(4%, 3%, 0); } }
.hero .wrap { position: relative; }
.hero h1 { font-size: clamp(2.75rem, 5.6vw, 5rem); line-height: 1.08; letter-spacing: -0.028em; font-weight: 600; }
.hero h1 span { display: block; font-weight: 200; }
.hero__lead { margin-top: var(--zs-space-6); max-width: 34ch; font: 400 clamp(1.125rem, 1.8vw, 1.375rem)/1.5 var(--font-display); color: var(--zs-ink); }
.hero__sub { margin-top: var(--zs-space-4); max-width: var(--measure); color: var(--zs-ash); }
.hero__cue { margin-top: var(--zs-space-7); display: flex; align-items: center; gap: var(--zs-space-3); }
.hero__cue i { width: 1px; height: 40px; background: linear-gradient(var(--zs-800), transparent); animation: cue 2.4s var(--zs-ease) infinite; }
@keyframes cue { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

.hero__art { position: absolute; right: 0; top: 0; width: 42%; height: 100%; pointer-events: none; opacity: 0; transition: opacity 900ms var(--zs-ease); }
.hero__art.on { opacity: 1; }
.swap { transition: opacity 280ms var(--zs-ease); }
.swap.is-swapping { opacity: 0; }
/* each view sets its own light: the same monochrome brand, lit from a different place */
:root[data-zs-view="control"] .hero::before { background: radial-gradient(90% 80% at 85% 70%, #2a2a31, #07070a 62%); }
:root[data-zs-view="intel"] .hero::before { background: radial-gradient(70% 70% at 70% 50%, #2e2e35, #07070a 58%); }
:root[data-zs-view="secure"] .hero::before { background: linear-gradient(105deg, #07070a 35%, #23232a 70%, #0b0b0e); }
:root[data-zs-view="threats"] .hero::before { background: radial-gradient(120% 90% at 100% 0%, #2c2c33, #07070a 55%); }

/* ── the question ── */
.ask { background: var(--zs-void); }
.ask__head { max-width: 40ch; }
.ask h2 { margin-top: var(--zs-space-3); font-size: clamp(2rem, 4.6vw, 3.5rem); line-height: 1.1; letter-spacing: -0.028em; font-weight: 600; }
.ask__promise { margin-top: var(--zs-space-4); color: var(--zs-ash); }
.ask__state { margin-top: var(--zs-space-4); font: 400 14px/1.6 var(--font-display); color: var(--zs-ash); }
.ask__state b { color: var(--zs-ink); font-weight: 500; }
.rows { margin-top: var(--zs-space-6); display: grid; gap: var(--zs-space-5); }
.row__label { margin-bottom: var(--zs-space-3); }
.cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--zs-space-4); }
.card {
  position: relative; display: grid; grid-template-rows: auto 1fr auto; text-align: left; cursor: pointer; padding: 0; min-width: 0;
  background: var(--zs-field-panel); border: 1px solid var(--zs-hairline); border-radius: var(--zs-radius-panel);
  box-shadow: var(--zs-shadow-tile); overflow: hidden;
  opacity: 1; transform: none;
  transition: border-color var(--zs-dur-state) var(--zs-ease), opacity var(--zs-dur-enter) var(--zs-ease), transform var(--zs-dur-enter) var(--zs-ease);
}
.card::after { /* light that crosses the surface on hover */
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(245, 244, 242, 0.06) 50%, transparent 70%);
  transform: translateX(-40%); transition: opacity var(--zs-dur-sweep) var(--zs-ease), transform var(--zs-dur-sweep) var(--zs-ease);
}
.card:hover, .card:focus-visible, .card[aria-pressed="true"] { border-color: rgba(255, 255, 255, 0.26); }
.card:hover::after, .card:focus-visible::after { opacity: 1; transform: translateX(40%); }
.card[aria-pressed="true"] { background: linear-gradient(165deg, #1d1d23, #0d0d11); }
.js .card.pre { opacity: 0; transform: translateY(12px); }
.card canvas { display: block; width: 100%; height: 150px; }
.card__body { padding: var(--zs-space-4) var(--zs-space-5) var(--zs-space-4); display: grid; gap: var(--zs-space-2); align-content: start; }
.card__problem { font: 500 clamp(1.125rem, 1.7vw, 1.3125rem)/1.35 var(--font-display); letter-spacing: -0.01em; color: var(--zs-ink); }
.card__answer { font-size: 14px; line-height: 1.7; color: var(--zs-ash); }
.card__foot { display: flex; align-items: center; justify-content: space-between; gap: var(--zs-space-3); padding: var(--zs-space-3) var(--zs-space-5) var(--zs-space-4); border-top: 1px solid var(--zs-hairline); }
.marks { display: flex; flex-wrap: wrap; gap: 6px 14px; min-width: 0; }
.mark { display: inline-flex; align-items: center; gap: 7px; font: 500 13px/1.3 var(--font-display); color: var(--zs-800); }
.mark img { width: 22px; height: 22px; object-fit: contain; }
.card__go { font: 400 18px/1 var(--font-display); color: var(--zs-ash); transition: transform var(--zs-dur-state) var(--zs-ease), color var(--zs-dur-state); }
.card:hover .card__go, .card:focus-visible .card__go { transform: translateX(4px); color: var(--zs-ink); }
.skip {
  margin-top: var(--zs-space-6); display: inline-flex; align-items: center; gap: 10px; min-height: 44px; padding: 10px 0;
  border: 0; background: none; cursor: pointer; font: 500 15px/1.4 var(--font-display); color: var(--zs-ink);
  border-bottom: 1px solid var(--zs-hairline-lit);
}
.skip:hover { border-color: var(--zs-800); }

/* ── tailored region ── */
.tailor { transition: opacity 260ms var(--zs-ease); }
.tailor.is-swapping { opacity: 0; }
.tagline { display: inline-flex; align-items: center; gap: 10px; }
.tagline::before { content: ""; width: 18px; height: 1px; background: var(--zs-800); }
.view h2 { margin-top: var(--zs-space-4); font-size: clamp(2rem, 4.6vw, 3.5rem); line-height: 1.1; letter-spacing: -0.028em; font-weight: 600; max-width: 22ch; }
.view__answer { margin-top: var(--zs-space-4); max-width: 46ch; font: 200 clamp(1.25rem, 2.2vw, 1.75rem)/1.4 var(--font-display); color: var(--zs-ink); }
.view__who { margin-top: var(--zs-space-4); }
.problems { margin: var(--zs-space-6) 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px; background: var(--zs-seam); border-radius: var(--zs-radius-panel); overflow: hidden; }
.problems button { width: 100%; height: 100%; text-align: left; border: 0; cursor: pointer; padding: var(--zs-space-5); background: var(--zs-field-panel); display: grid; gap: 6px; min-height: 44px; }
.problems button:hover { background: linear-gradient(165deg, #1b1b21, #0d0d11); }
.problems b { font: 500 17px/1.4 var(--font-display); }
.problems span { font-size: 14px; color: var(--zs-ash); }

.wdg { margin-top: var(--zs-space-6); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2px; background: var(--zs-seam); border-radius: var(--zs-radius-panel); overflow: hidden; }
.wdg > div { background: var(--zs-field-panel); padding: var(--zs-space-5); display: grid; gap: var(--zs-space-2); align-content: start; }
.wdg > div:last-child { background: linear-gradient(165deg, #202027, #0d0d11); }
.wdg p:not(.label) { font: 400 17px/1.5 var(--font-display); }
.wdg > div:first-child p:not(.label) { color: var(--zs-ash); }
.steps { margin: var(--zs-space-6) 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--zs-space-5); counter-reset: s; }
.steps li { border-top: 1px solid var(--zs-hairline-lit); padding-top: var(--zs-space-4); display: grid; gap: 6px; counter-increment: s; }
.steps li::before { content: "0" counter(s); font: 500 11px/1 var(--font-body); letter-spacing: 0.2em; color: var(--zs-600); }
.steps b { font: 600 22px/1.25 var(--font-display); letter-spacing: -0.015em; }
.steps p { font-size: 15px; line-height: 1.7; color: var(--zs-ash); }
.whygrid { margin-top: var(--zs-space-6); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--zs-space-5); }
.whygrid article { border-top: 1px solid var(--zs-hairline-lit); padding-top: var(--zs-space-4); display: grid; gap: var(--zs-space-2); align-content: start; }
.whygrid b { font: 500 19px/1.35 var(--font-display); }
.whygrid p:not(.label) { font-size: 15px; line-height: 1.7; color: var(--zs-ash); }
.stack .stack__grid { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); align-items: start; }
.stack .stack__grid > svg { position: sticky; top: calc(var(--head-h) + 48px); }
.layer__line { font: 400 15px/1.5 var(--font-display); }
.lcaps { margin-top: 12px; display: grid; gap: 10px; }
.lchips { display: flex; flex-wrap: wrap; gap: 6px; }
.lchips span { display: inline-flex; align-items: center; gap: 7px; font: 400 12.5px/1.25 var(--font-display); color: var(--zs-800); padding: 7px 11px; border-radius: 999px; border: 1px solid var(--zs-hairline-lit); background: rgba(255, 255, 255, 0.025); transition: border-color var(--zs-dur-state), color var(--zs-dur-state); }
.lchips span::before { content: ""; width: 4px; height: 4px; border-radius: 50%; background: var(--zs-700); }
.layers li.hi .lchips span, .lchips span:hover { color: var(--zs-ink); border-color: rgba(245, 244, 242, 0.28); }
.layers li.hi .lchips span::before { background: var(--zs-ink); box-shadow: 0 0 6px rgba(245, 244, 242, 0.7); }
.lstat { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; padding: 12px 16px; border-radius: var(--zs-radius-control); border: 1px solid var(--zs-hairline-lit); background: var(--zs-field-diagonal); }
.lstat b { font: 600 22px/1.1 var(--font-display); letter-spacing: -0.02em; background: var(--zs-field-silver); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lstat span { font-size: 13px; color: var(--zs-ash); }
.lprods { margin-top: 12px; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); gap: 10px; }
.lprod { display: grid; gap: 8px; align-content: start; padding: 16px 18px; border: 1px solid var(--zs-hairline); border-radius: var(--zs-radius-control); background: var(--zs-field-panel); transition: border-color var(--zs-dur-state) var(--zs-ease); }
.layers li.hi .lprod, .lprod:hover { border-color: rgba(245, 244, 242, 0.28); }
.lprod__head { display: flex; align-items: center; gap: 10px; }
.lprod__head img { width: 34px; height: 34px; object-fit: contain; flex: 0 0 auto; }
.lprod__noimg { width: 34px; height: 34px; flex: 0 0 auto; border-radius: 10px; border: 1px solid var(--zs-hairline-lit); background: var(--zs-field-lit); }
.lprod__name { font: 500 16px/1.25 var(--font-display); }
.lprod__cap { font: 400 12px/1.35 var(--font-display); color: var(--zs-ash); }
.lprod__text { font-size: 13.5px; line-height: 1.6; color: var(--zs-800); }
.lprod details { border-top: 1px solid var(--zs-hairline); padding-top: 8px; }
.lprod summary { cursor: pointer; font: 500 12.5px/1.4 var(--font-display); color: var(--zs-ash); list-style: none; min-height: 28px; display: flex; align-items: center; }
.lprod summary::-webkit-details-marker { display: none; }
.lprod summary::after { content: "↓"; margin-left: 6px; transition: transform var(--zs-dur-state) var(--zs-ease); }
.lprod details[open] summary::after { transform: rotate(180deg); }
.lprod summary:hover { color: var(--zs-ink); }
.lprod ul { margin: 6px 0 0; padding: 0; list-style: none; display: grid; gap: 4px; font-size: 13px; color: var(--zs-ash); }
.lprod li::before { content: "– "; color: var(--zs-600); }
.layers li { grid-template-columns: 130px minmax(0, 1fr); padding-block: 18px; }
.stack__grid { margin-top: var(--zs-space-6); display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: var(--zs-space-6); align-items: center; }
.stack svg { width: 100%; max-width: 460px; height: auto; display: block; margin-inline: auto; overflow: visible; }
.slab .lit { opacity: 0; transition: opacity var(--zs-dur-sweep) var(--zs-ease); }
.slab.on .lit { opacity: 1; }
.slab .edge { fill: none; stroke: rgba(255, 255, 255, 0.1); stroke-width: 1; transition: stroke var(--zs-dur-sweep) var(--zs-ease); }
.slab.on .edge { stroke: rgba(245, 244, 242, 0.55); }
.slab > path:not(.edge) { transition: opacity var(--zs-dur-sweep) var(--zs-ease); }
.slab.ghost > path:not(.edge):not(.lit) { opacity: 0.18; }
.slab.ghost .edge { stroke: rgba(255, 255, 255, 0.05); }
.layers { list-style: none; margin: 0; padding: 0; display: grid; }
.layers li { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: var(--zs-space-4); padding-block: 14px; border-top: 1px solid var(--zs-hairline); opacity: 0.6; transition: opacity var(--zs-dur-sweep) var(--zs-ease); }
.layers li:last-child { border-bottom: 1px solid var(--zs-hairline); }
.layers li.on { opacity: 1; }
.layers .label { padding-top: 4px; }
.layers li.on .label { color: var(--zs-ink); }
.layers p { font: 400 15px/1.5 var(--font-display); }
.layers .prods { margin-top: 4px; font-size: 13px; color: var(--zs-ash); }
.rel { display: inline-block; margin-left: 8px; font: 500 9px/1.4 var(--font-body); letter-spacing: 0.2em; text-transform: uppercase; color: var(--zs-ink); border: 1px solid var(--zs-hairline-lit); border-radius: 6px; padding: 2px 6px; vertical-align: 2px; }

.sec-head h2 { margin-top: var(--zs-space-3); font-size: clamp(1.75rem, 3.4vw, 2.5rem); line-height: 1.15; letter-spacing: -0.02em; font-weight: 600; max-width: 26ch; }
.sec-head p:not(.label) { margin-top: var(--zs-space-3); color: var(--zs-ash); max-width: var(--measure); }
.prodgrid { margin-top: var(--zs-space-6); display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 330px), 1fr)); gap: 2px; background: var(--zs-seam); border-radius: var(--zs-radius-panel); overflow: hidden; }
.prod { background: var(--zs-field-panel); padding: var(--zs-space-5); display: grid; gap: var(--zs-space-3); align-content: start; min-width: 0; }
.prod__head { display: flex; align-items: center; gap: var(--zs-space-3); }
.prod__head img { width: 44px; height: 44px; object-fit: contain; flex-shrink: 0; }
.prod__name { font: 500 19px/1.3 var(--font-display); }
.prod__cap { font: 400 13px/1.4 var(--font-display); color: var(--zs-ash); }
.prod__text { font-size: 15px; line-height: 1.7; }
.prod details { border-top: 1px solid var(--zs-hairline); padding-top: var(--zs-space-3); }
.prod summary { cursor: pointer; font: 500 13px/1.4 var(--font-display); color: var(--zs-ash); list-style: none; min-height: 32px; display: flex; align-items: center; }
.prod summary::-webkit-details-marker { display: none; }
.prod summary::after { content: "↓"; margin-left: 8px; transition: transform var(--zs-dur-state) var(--zs-ease); }
.prod details[open] summary::after { transform: rotate(180deg); }
.prod summary:hover { color: var(--zs-ink); }
.prod ul { margin: var(--zs-space-2) 0 0; padding: 0; list-style: none; display: grid; gap: 6px; font-size: 14px; color: var(--zs-ash); }
.prod li::before { content: "– "; color: var(--zs-600); }
.prod--also { opacity: 0.72; }

.proof__grid { margin-top: var(--zs-space-6); display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: var(--zs-space-6); align-items: start; }
.stat { padding: var(--zs-space-6); border-radius: var(--zs-radius-section); background: var(--zs-field-diagonal); border: 1px solid var(--zs-hairline); }
.stat__n { font: 600 clamp(2.75rem, 6vw, 4.5rem)/1.08 var(--font-display); letter-spacing: -0.028em; background: var(--zs-field-silver); -webkit-background-clip: text; background-clip: text; color: transparent; font-variant-numeric: tabular-nums; }
.stat__n span { font-weight: 200; }
.stat p { margin-top: var(--zs-space-4); color: var(--zs-ash); max-width: 46ch; }
.facts { margin: 0; display: grid; }
.facts div { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: var(--zs-space-4); padding-block: 14px; border-top: 1px solid var(--zs-hairline); }
.facts div:last-child { border-bottom: 1px solid var(--zs-hairline); }
.facts dt { padding-top: 3px; }
.facts dd { margin: 0; font-size: 15px; line-height: 1.6; }
.chips { margin-top: var(--zs-space-4); display: flex; flex-wrap: wrap; gap: 8px; }
.chips span { font: 500 11px/1 var(--font-body); letter-spacing: 0.12em; text-transform: uppercase; color: var(--zs-800); border: 1px solid var(--zs-hairline-lit); border-radius: 8px; padding: 7px 10px; }

.path ol { margin: var(--zs-space-6) 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2px; background: var(--zs-seam); border-radius: var(--zs-radius-panel); overflow: hidden; }
.path li { background: var(--zs-field-panel); padding: var(--zs-space-5); display: grid; gap: var(--zs-space-2); align-content: start; }
.path b { font: 500 19px/1.3 var(--font-display); }
.path em { font: 500 12px/1.4 var(--font-body); font-style: normal; letter-spacing: 0.12em; text-transform: uppercase; color: var(--zs-800); }
.path li p { font-size: 14px; line-height: 1.7; color: var(--zs-ash); }
.path__note { margin-top: var(--zs-space-4); font-size: 14px; color: var(--zs-ash); }

.close { background: var(--zs-void); }
.close h2 { font-size: clamp(2.5rem, 6.4vw, 5rem); line-height: 1.08; letter-spacing: -0.028em; font-weight: 600; }
.close h2 span { display: block; font-weight: 200; }
.close__row { margin-top: var(--zs-space-6); display: flex; flex-wrap: wrap; align-items: center; gap: var(--zs-space-4); }
.btn { text-decoration: none; display: inline-flex; align-items: center; gap: 10px; min-height: 48px; padding: 12px 22px; border-radius: var(--zs-radius-control); border: 0; cursor: pointer; font: 500 15px/1.2 var(--font-display); background: var(--zs-field-button); color: var(--zs-base); }
.btn:hover { filter: brightness(1.04); }
.close__sub { margin-top: var(--zs-space-4); color: var(--zs-ash); max-width: var(--measure); }
.close__note { margin-top: var(--zs-space-4); font-size: 14px; color: var(--zs-ash); }
.mail { font: 500 15px/1.4 var(--font-display); color: var(--zs-ink); text-decoration: none; border-bottom: 1px solid var(--zs-hairline-lit); padding-block: 6px; }
footer { background: var(--zs-void); border-top: 1px solid var(--zs-hairline-lit); }
.sign { display: flex; justify-content: space-between; align-items: flex-end; gap: var(--zs-space-6); padding-block: 64px 40px; }
.sign .lockup { height: 40px; width: auto; display: block; color: var(--zs-ink); }
.brandline { margin-top: 12px; display: inline-block; white-space: nowrap; font: 600 14px/1.2 var(--font-display); letter-spacing: -0.01em; color: var(--zs-ash); }
.endorse {
  display: inline-flex; align-items: center; gap: 10px; padding: 12px 18px;
  border: 1px solid var(--zs-hairline-lit); border-radius: var(--zs-radius-control); background: var(--zs-field-panel);
}
.endorse small { font: 500 10px/1 var(--font-body); letter-spacing: 0.24em; text-transform: uppercase; color: var(--zs-ash); }
.endorse svg { height: 20px; width: auto; display: block; overflow: visible; }
.endorse polygon { fill: #d3d3d3; transform-box: fill-box; transition: transform 700ms var(--zs-ease), fill var(--zs-dur-state); }
.js .endorse:not(.in) polygon { transform: translateX(-30%); }
.endorse polygon:last-child { transition-delay: 120ms; }
.endorse:hover polygon { fill: #f5f4f2; }
.endorse b { font: 600 18px/1 var(--font-display); letter-spacing: -0.01em; color: var(--zs-ink); }
.foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--zs-space-3) var(--zs-space-5); align-items: center; padding-block: 20px 32px; border-top: 1px solid var(--zs-hairline); }
.keywords { color: var(--zs-ink); }

/* story reveal: each block rises and brightens as its section arrives */
.js .rise { opacity: 0.32; transform: translateY(16px); transition: opacity 700ms var(--zs-ease) var(--d, 0ms), transform 900ms var(--zs-ease) var(--d, 0ms), border-color var(--zs-dur-state), background var(--zs-dur-state); }
.js .rise.in { opacity: 1; transform: none; }
.js .open.rise.in:hover { transform: translateY(-2px); }
/* team */
.team { background: radial-gradient(70% 80% at 15% 100%, rgba(42, 42, 49, 0.5), transparent 60%), var(--zs-void); }
.team__grid { margin-top: var(--zs-space-6); display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: var(--zs-space-6); align-items: end; }
.team__big { font: 600 clamp(4.5rem, 11vw, 9rem)/0.95 var(--font-display); letter-spacing: -0.04em; background: var(--zs-field-silver); -webkit-background-clip: text; background-clip: text; color: transparent; font-variant-numeric: tabular-nums; }
.team__big small { display: block; margin-top: 10px; font: 200 clamp(1.25rem, 2.4vw, 1.875rem)/1.2 var(--font-display); letter-spacing: -0.01em; color: var(--zs-ink); -webkit-text-fill-color: var(--zs-ink); }
.team__line { font: 400 clamp(1.0625rem, 1.6vw, 1.25rem)/1.6 var(--font-display); color: var(--zs-800); max-width: 52ch; }
.tstats { margin: var(--zs-space-6) 0 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2px; background: var(--zs-seam); border-radius: var(--zs-radius-panel); overflow: hidden; }
.tstat { background: var(--zs-field-panel); padding: var(--zs-space-5); display: grid; gap: 8px; align-content: start; }
.tstat dd { margin: 0; order: -1; font: 600 clamp(1.5rem, 2.6vw, 2.125rem)/1.1 var(--font-display); letter-spacing: -0.02em; }
/* light reveals */
.js .reveal {
  background: linear-gradient(100deg, var(--zs-ink) 0 42%, #6e6d6b 58% 100%); background-size: 260% 100%; background-position: 100% 0;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  transition: background-position 1500ms var(--zs-ease);
}
.js .reveal.in { background-position: 0 0; }
.js .reveal span { color: transparent; }
.steps li, .whygrid article { border-top: 0; background: linear-gradient(var(--zs-hairline-lit), var(--zs-hairline-lit)) 0 0 / 100% 1px no-repeat; transition: background-size 1000ms var(--zs-ease); }
.js .steps li:not(.in), .js .whygrid article.draw:not(.in) { background-size: 0% 1px; }
/* card: a spotlight and a lit edge follow the pointer */
.edge-light {
  position: absolute; inset: -1px; border-radius: inherit; padding: 1px; pointer-events: none; opacity: 0; transition: opacity var(--zs-dur-state) var(--zs-ease);
  background: radial-gradient(220px circle at var(--mx, 50%) var(--my, 0%), rgba(245, 244, 242, 0.7), transparent 60%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude;
}
.card:hover .edge-light, .card:focus-visible .edge-light { opacity: 1; }
.card:hover { background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 0%), rgba(245, 244, 242, 0.06), transparent 65%), var(--zs-field-panel); }
.expander { position: fixed; z-index: 45; overflow: hidden; border-radius: var(--zs-radius-panel); border: 1px solid rgba(255, 255, 255, 0.26); background: var(--zs-field-panel);
  transition: top 760ms var(--zs-ease), left 760ms var(--zs-ease), width 760ms var(--zs-ease), height 760ms var(--zs-ease), border-radius 760ms var(--zs-ease), opacity 700ms var(--zs-ease), background 760ms var(--zs-ease); }
.expander canvas { display: block; width: 100%; height: 100%; }
.expander.full { border-radius: 0; border-color: transparent; background: #0a0a0d; }
.expander.out { opacity: 0; }
/* button: light crosses it */
.btn { position: relative; overflow: hidden; }
.btn::after { content: ""; position: absolute; inset: 0; background: linear-gradient(110deg, transparent 30%, rgba(255, 255, 255, 0.7) 50%, transparent 70%); transform: translateX(-120%); transition: transform 800ms var(--zs-ease); }
.btn:hover::after { transform: translateX(120%); }
.btn span { transition: transform var(--zs-dur-state) var(--zs-ease); }
.btn:hover span { transform: translateX(4px); }
/* stack: a scan of light rises through it; diagram and list light each other */
.scan { animation: scan 5.5s linear infinite; pointer-events: none; }
@keyframes scan { 0% { transform: translate(0px, 336px); opacity: 0; } 12% { opacity: 1; } 88% { opacity: 1; } 100% { transform: translate(0px, 14px); opacity: 0; } }
.slab.hi .lit { opacity: 1; }
.slab.hi .edge { stroke: var(--zs-ink); }
.layers li { border-radius: 10px; padding-inline: 8px; margin-inline: -8px; cursor: default; }
.layers li.hi { opacity: 1; background: rgba(255, 255, 255, 0.035); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
/* the stack, walked layer by layer */
.stage { margin-top: var(--zs-space-6); display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: var(--zs-space-6); align-items: start; }
.stage__viz { position: sticky; top: calc(var(--head-h) + 16px); z-index: 2; }
.focus { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; gap: 14px; height: min(620px, calc(100vh - var(--head-h) - 48px)); padding: 24px; border-radius: var(--zs-radius-section); border: 1px solid var(--zs-hairline-lit); background: radial-gradient(90% 70% at 50% 40%, rgba(42, 42, 49, 0.55), transparent 70%), var(--zs-field-diagonal); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05); }
.focus__head { display: flex; align-items: center; gap: 14px; }
.focus__icon, .step__icon, .apanel__icon, .area__icon { display: grid; place-items: center; flex: 0 0 auto; border-radius: 12px; border: 1px solid rgba(255, 255, 255, 0.12); background: linear-gradient(160deg, #26262d, #111115); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 10px 22px -14px rgba(0, 0, 0, 0.9); color: var(--zs-ink); }
.focus__icon { width: 46px; height: 46px; }
.focus__icon svg, .step__icon svg, .apanel__icon svg { width: 24px; height: 24px; }
.focus__name { font: 600 22px/1.2 var(--font-display); letter-spacing: -0.015em; overflow: hidden; }
.focus__name span { display: inline-block; }
.focus__name span.roll { animation: roll 460ms var(--zs-ease); }
.focus svg { width: 100%; height: 100%; max-width: none; margin: 0; }
.focus__dots { margin: 0; padding: 0; list-style: none; display: flex; justify-content: center; gap: 8px; }
.focus__dots li { width: 22px; height: 3px; border-radius: 3px; background: rgba(255, 255, 255, 0.1); transition: background var(--zs-dur-state), width 400ms var(--zs-ease); }
.focus__dots li.on { background: rgba(255, 255, 255, 0.25); }
.focus__dots li.act { width: 40px; background: var(--zs-ink); box-shadow: 0 0 10px rgba(245, 244, 242, 0.5); }
.slab .lift { transform: translateY(calc((var(--i, 0) - 2.5) * -9px * var(--spread, 0) - var(--lift, 0px))); transition: transform 700ms var(--zs-ease); }
.slab.act { --lift: 16px; }
.slab.on:not(.act) .lit { opacity: 0.35; }
.slab.act .lit { opacity: 1; }
.slab.act .edge { stroke: var(--zs-ink); }
.stage .layers { display: grid; gap: 0; }
.stage .layers li.step { display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px; align-content: center; min-height: 62vh; padding: 40px 0; margin: 0; border: 0; border-radius: 0; background: none; opacity: 0.6; transition: opacity 600ms var(--zs-ease); }
.stage .layers li.step:last-child { border: 0; }
.stage .layers li.step.act { opacity: 1; }
.step__head { display: flex; align-items: center; gap: 14px; }
.step__icon { width: 44px; height: 44px; }
.step__name { font: 600 clamp(1.5rem, 2.6vw, 2.125rem)/1.15 var(--font-display); letter-spacing: -0.02em; }
.stage .layer__line { font: 400 clamp(1.0625rem, 1.5vw, 1.1875rem)/1.55 var(--font-display); color: var(--zs-800); max-width: 52ch; }
.stage .layers .label { color: var(--zs-ash); }
/* research words */
.rwords { margin: var(--zs-space-4) 0 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2px; background: var(--zs-seam); border-radius: var(--zs-radius-panel); overflow: hidden; }
.rwords div { background: var(--zs-field-panel); padding: var(--zs-space-5); display: grid; gap: 8px; align-content: start; }
.rwords dt { font: 600 clamp(1.375rem, 2.2vw, 1.75rem)/1.1 var(--font-display); letter-spacing: -0.02em; background: var(--zs-field-silver); -webkit-background-clip: text; background-clip: text; color: transparent; }
.rwords dd { margin: 0; font-size: 13.5px; line-height: 1.55; color: var(--zs-ash); }
.bigcount.done { box-shadow: 0 0 0 1px rgba(245, 244, 242, 0.12), 0 0 60px -20px rgba(245, 244, 242, 0.35); transition: box-shadow 900ms var(--zs-ease); }
.bigcount.done .bigcount__n { filter: drop-shadow(0 0 18px rgba(245, 244, 242, 0.25)); transition: filter 900ms var(--zs-ease); }
/* journey finale */
.flag { position: relative; margin-top: var(--zs-space-6); height: clamp(180px, 22vw, 260px); border-radius: var(--zs-radius-section); border: 1px solid var(--zs-hairline-lit); background: radial-gradient(60% 90% at 50% 50%, rgba(42, 42, 49, 0.6), transparent 70%), var(--zs-void); overflow: hidden; }
.flag canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
/* calmer, matched research areas */
.research .explorer { align-items: stretch; }
.research .areas { position: static; grid-auto-rows: minmax(0, 1fr); height: 100%; }
.area { grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 14px; }
.area__icon { width: 38px; height: 38px; color: var(--zs-800); }
.area__icon svg { width: 20px; height: 20px; }
.area[aria-selected="true"] .area__icon { color: var(--zs-ink); }
.area__txt { display: grid; gap: 3px; min-width: 0; }
.apanel { display: flex; }
.apanel__body { padding: var(--zs-space-6); gap: var(--zs-space-4); width: 100%; }
.apanel__head { display: flex; align-items: center; gap: 16px; }
.apanel__icon { width: 52px; height: 52px; }
.apanel__icon svg { width: 26px; height: 26px; }
.pipe { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2px; background: var(--zs-seam); border-radius: var(--zs-radius-control); overflow: hidden; }
.pipe li { position: relative; display: grid; gap: 6px; align-content: start; padding: 16px; background: rgba(12, 12, 16, 0.6); }
.pipe li:not(:last-child)::after { content: "→"; position: absolute; right: -9px; top: 14px; z-index: 1; width: 16px; height: 16px; display: grid; place-items: center; font-size: 11px; color: var(--zs-ink); background: var(--zs-graphite); border: 1px solid var(--zs-hairline-lit); border-radius: 50%; }
.pipe p:not(.label) { font-size: 13.5px; line-height: 1.55; color: var(--zs-800); }
.pipe__runs { background: linear-gradient(165deg, #1d1d23, #0d0d11) !important; }
.regs { margin-top: var(--zs-space-4); display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.regs .label { margin-right: 6px; }
.regs span { font: 500 11px/1 var(--font-body); letter-spacing: 0.12em; text-transform: uppercase; color: var(--zs-800); border: 1px solid var(--zs-hairline-lit); border-radius: 8px; padding: 7px 10px; }
.why__sub { margin-top: var(--zs-space-3); color: var(--zs-ash); max-width: var(--measure); }
.build { margin-top: var(--zs-space-6); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2px; background: var(--zs-seam); border-radius: var(--zs-radius-panel); overflow: hidden; }
.build article { background: var(--zs-field-panel); padding: var(--zs-space-5); display: grid; gap: 10px; grid-template-rows: auto 1fr auto; }
.build__what { font: 400 15px/1.55 var(--font-display); color: var(--zs-800); }
.build__stop { padding-top: 12px; border-top: 1px solid var(--zs-hairline); font: 500 15px/1.4 var(--font-display); color: var(--zs-ink); }
.build__stop span { display: block; margin-bottom: 4px; font: 500 10px/1.4 var(--font-body); letter-spacing: 0.2em; text-transform: uppercase; color: var(--zs-600); }
.build__us { background: radial-gradient(120% 80% at 100% 0%, rgba(245, 244, 242, 0.1), transparent 60%), linear-gradient(165deg, #222229, #0d0d11) !important; box-shadow: inset 0 0 0 1px rgba(245, 244, 242, 0.22); }
.build__us .label { color: var(--zs-ink); }
.build__line { margin-top: var(--zs-space-5); font: 200 clamp(1.25rem, 2.2vw, 1.75rem)/1.35 var(--font-display); color: var(--zs-ink); max-width: 40ch; }
/* applied research */
.research { background: radial-gradient(80% 60% at 85% 0%, rgba(42, 42, 49, 0.55), transparent 60%), var(--zs-base); }
.research .sec-head h2 span, .team .sec-head h2 span { display: block; font-weight: 200; }
.bigcount { position: relative; margin-top: var(--zs-space-6); display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: end; gap: var(--zs-space-6); padding: clamp(28px, 4vw, 48px); border-radius: var(--zs-radius-section); border: 1px solid var(--zs-hairline-lit); background: radial-gradient(60% 120% at 0% 100%, rgba(245, 244, 242, 0.08), transparent 60%), var(--zs-field-diagonal); overflow: hidden; }
.bigcount::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(110deg, transparent 40%, rgba(245, 244, 242, 0.05) 50%, transparent 60%); background-size: 250% 100%; animation: sheen 6s linear infinite; }
@keyframes sheen { from { background-position: 150% 0; } to { background-position: -100% 0; } }
.bigcount__n { font: 600 clamp(3.5rem, 9vw, 7.5rem)/0.95 var(--font-display); letter-spacing: -0.04em; font-variant-numeric: tabular-nums; background: var(--zs-field-silver); -webkit-background-clip: text; background-clip: text; color: transparent; white-space: nowrap; }
.bigcount__copy { display: grid; gap: 6px; padding-bottom: 8px; }
.bigcount__l { font: 200 clamp(1.25rem, 2.4vw, 1.875rem)/1.2 var(--font-display); color: var(--zs-ink); }
.bigcount__s { margin-top: 6px; font-size: 14px; line-height: 1.6; color: var(--zs-ash); max-width: 52ch; }
.rstats { margin: var(--zs-space-4) 0 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2px; background: var(--zs-seam); border-radius: var(--zs-radius-panel); overflow: hidden; }
.rstats div { background: var(--zs-field-panel); padding: var(--zs-space-5); display: grid; gap: 8px; align-content: start; }
.rstats dd { margin: 0; order: -1; font: 600 clamp(2.25rem, 4vw, 3.25rem)/1 var(--font-display); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; background: var(--zs-field-silver); -webkit-background-clip: text; background-clip: text; color: transparent; }
.explorer { margin-top: var(--zs-space-6); display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: var(--zs-space-5); align-items: start; }
.areas { display: grid; gap: 6px; position: sticky; top: calc(var(--head-h) + 16px); }
.area { position: relative; text-align: left; display: grid; gap: 4px; padding: 16px 18px; min-height: 44px; border: 1px solid var(--zs-hairline); border-radius: var(--zs-radius-control); background: transparent; cursor: pointer; transition: border-color var(--zs-dur-state) var(--zs-ease), background var(--zs-dur-state) var(--zs-ease); }
.area:hover { border-color: rgba(255, 255, 255, 0.2); background: rgba(255, 255, 255, 0.02); }
.area[aria-selected="true"] { border-color: rgba(245, 244, 242, 0.45); background: linear-gradient(165deg, #1d1d23, #0d0d11); }
.area[aria-selected="true"]::before { content: ""; position: absolute; left: -1px; top: 14px; bottom: 14px; width: 2px; border-radius: 2px; background: var(--zs-ink); box-shadow: 0 0 12px 1px rgba(245, 244, 242, 0.5); }
.area__from { font: 500 10px/1.3 var(--font-body); letter-spacing: 0.2em; text-transform: uppercase; color: var(--zs-600); text-decoration: line-through; text-decoration-color: rgba(255, 255, 255, 0.25); }
.area__to { font: 500 16px/1.35 var(--font-display); color: var(--zs-ash); transition: color var(--zs-dur-state); }
.area[aria-selected="true"] .area__to, .area:hover .area__to { color: var(--zs-ink); }
.area .rel { position: absolute; top: 14px; right: 14px; margin: 0; }
.apanel { position: relative; overflow: hidden; border: 1px solid var(--zs-hairline-lit); border-radius: var(--zs-radius-section); background: var(--zs-field-diagonal); min-width: 0; }
.apanel canvas { display: block; width: 100%; height: 230px; border-bottom: 1px solid var(--zs-hairline); background: radial-gradient(90% 120% at 70% 0%, rgba(42, 42, 49, 0.6), transparent 70%); }
.apanel__body { padding: var(--zs-space-5) var(--zs-space-6) var(--zs-space-6); display: grid; gap: var(--zs-space-3); }
.apanel__title { font: 600 clamp(1.5rem, 2.6vw, 2.125rem)/1.15 var(--font-display); letter-spacing: -0.02em; }
.apanel__thesis { font-size: 16px; line-height: 1.75; color: var(--zs-800); max-width: 64ch; }
.apanel__qs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.apanel__qs span { font: 400 13px/1.3 var(--font-display); padding: 8px 12px; border-radius: 999px; border: 1px solid var(--zs-hairline-lit); color: var(--zs-ink); background: rgba(255, 255, 255, 0.02); }
.apanel__cols { margin-top: var(--zs-space-3); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--zs-space-5); }
.apanel__cols > div { display: grid; gap: 10px; align-content: start; min-width: 0; }
.work { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.work li { display: grid; gap: 2px; }
.work b { font: 500 15px/1.4 var(--font-display); }
.work a { text-decoration: none; border-bottom: 1px solid var(--zs-hairline-lit); }
.work a:hover { border-color: var(--zs-ink); }
.work span { font-size: 14px; line-height: 1.6; color: var(--zs-ash); }
.ships { margin-top: 6px; }
.shipchips { display: flex; flex-wrap: wrap; gap: 6px; }
.shipchips span { font: 500 12px/1 var(--font-display); padding: 8px 10px; border-radius: 8px; background: var(--zs-field-silver); color: var(--zs-base); }
.outlook { font: 400 15px/1.6 var(--font-display); color: var(--zs-ink); }
.refs { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; counter-reset: r; }
.refs li { display: grid; gap: 2px; padding-left: 26px; position: relative; counter-increment: r; }
.refs li::before { content: "[" counter(r) "]"; position: absolute; left: 0; top: 1px; font: 500 11px/1.4 var(--font-body); color: var(--zs-600); }
.refs a { font: 400 14px/1.45 var(--font-display); color: var(--zs-ink); text-decoration: none; }
.refs a:hover { text-decoration: underline; text-underline-offset: 3px; }
.refs span { font-size: 12px; line-height: 1.5; color: var(--zs-ash); }
.rblock { margin-top: var(--zs-space-7); }
.rblock__head h3, .collab h3, .rblock__head h2, .collab h2 { margin-top: var(--zs-space-2); font: 600 clamp(1.375rem, 2.4vw, 1.875rem)/1.2 var(--font-display); letter-spacing: -0.02em; }
.pubs { margin: var(--zs-space-5) 0 0; padding: 0; list-style: none; display: grid; }
.pub { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); grid-template-rows: auto auto auto; column-gap: var(--zs-space-5); row-gap: 4px; padding-block: 22px; background: linear-gradient(var(--zs-hairline-lit), var(--zs-hairline-lit)) 0 0 / 100% 1px no-repeat; transition: background-size 1000ms var(--zs-ease); }
.js .pub:not(.in) { background-size: 0% 1px; }
.pub__meta { grid-row: 1 / span 3; display: grid; gap: 8px; align-content: start; }
.pub__status { justify-self: start; font: 600 10px/1 var(--font-body); letter-spacing: 0.18em; text-transform: uppercase; padding: 6px 8px; border-radius: 6px; border: 1px solid var(--zs-hairline-lit); color: var(--zs-800); }
.pub__status[data-s="Accepted"] { background: var(--zs-field-silver); color: var(--zs-base); border-color: transparent; }
.pub__venue { font: 400 13px/1.4 var(--font-display); color: var(--zs-ash); }
.pub__title { font: 500 clamp(1.0625rem, 1.6vw, 1.25rem)/1.4 var(--font-display); letter-spacing: -0.01em; }
.pub__authors { font-size: 13px; color: var(--zs-ash); }
.pub__result { margin-top: 4px; font-size: 15px; line-height: 1.65; color: var(--zs-800); max-width: 70ch; }
.opengrid { margin-top: var(--zs-space-5); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--zs-space-4); }
.open { display: grid; gap: 8px; align-content: start; padding: var(--zs-space-5); text-decoration: none; border: 1px solid var(--zs-hairline); border-radius: var(--zs-radius-panel); background: var(--zs-field-panel); transition: border-color var(--zs-dur-state) var(--zs-ease), transform var(--zs-dur-state) var(--zs-ease); }
.open:hover { border-color: rgba(245, 244, 242, 0.35); transform: translateY(-2px); }
.open b { font: 600 20px/1.25 var(--font-display); }
.open p { font-size: 14px; line-height: 1.6; color: var(--zs-ash); }
.open__cta { margin-top: 6px; font: 500 13px/1.3 var(--font-display); color: var(--zs-ink); }
.collab { margin-top: var(--zs-space-7); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: var(--zs-space-5); padding: var(--zs-space-6); border-radius: var(--zs-radius-section); border: 1px solid var(--zs-hairline-lit); background: var(--zs-field-lit); }
.collab > div { display: grid; gap: 6px; max-width: 56ch; }
.collab p:not(.label) { color: var(--zs-ash); }

.rblock__head > p:not(.label) { margin-top: 6px; color: var(--zs-ash); }
.journey-wrap { margin-top: var(--zs-space-7); }
.journey { --jf: 0; position: relative; margin: var(--zs-space-6) 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: 1fr 1fr; column-gap: 72px; }
.journey::before, .journey::after { content: ""; position: absolute; left: 50%; top: 0; width: 1px; margin-left: -0.5px; height: 100%; background: var(--zs-hairline-lit); }
.journey::after { background: linear-gradient(180deg, rgba(245, 244, 242, 0.2), #f5f4f2); transform-origin: 50% 0; transform: scaleY(var(--jf)); box-shadow: 0 0 10px rgba(245, 244, 242, 0.5); }
.jn { position: relative; padding: 0 0 40px; display: grid; gap: 4px; opacity: 0.45; transition: opacity 500ms var(--zs-ease); }
.jn.past { opacity: 1; }
.jn:nth-child(odd) { grid-column: 1; text-align: right; }
.jn:nth-child(even) { grid-column: 2; margin-top: 64px; }
.jn__dot { position: absolute; top: 6px; width: 11px; height: 11px; border-radius: 50%; background: var(--zs-base); border: 1px solid var(--zs-800); transition: background 400ms, box-shadow 400ms; }
.jn:nth-child(odd) .jn__dot { right: -42px; }
.jn:nth-child(even) .jn__dot { left: -42px; }
.jn.past .jn__dot { background: var(--zs-ink); box-shadow: 0 0 14px 3px rgba(245, 244, 242, 0.45); }
.jn__when { font: 500 11px/1.4 var(--font-body); letter-spacing: 0.22em; text-transform: uppercase; color: var(--zs-ash); }
.jn__what { font: 600 19px/1.3 var(--font-display); letter-spacing: -0.01em; }
.jn--big .jn__what { font-size: clamp(1.375rem, 2.2vw, 1.75rem); }
.jn__line { font-size: 14px; line-height: 1.65; color: var(--zs-ash); }
.jn:nth-child(odd) .jn__line { margin-left: auto; }
.jn__line { max-width: 44ch; }
.cited { margin-top: var(--zs-space-5); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2px; background: var(--zs-seam); border-radius: var(--zs-radius-panel); overflow: hidden; }
.cite { display: grid; gap: 8px; align-content: start; padding: var(--zs-space-5); text-decoration: none; background: var(--zs-field-panel); transition: background var(--zs-dur-state); }
.cite:hover { background: linear-gradient(165deg, #1d1d23, #0d0d11); }
.cite__who { font: 600 17px/1.3 var(--font-display); }
.cite__what { font-size: 13px; line-height: 1.55; color: var(--zs-ash); }
.cite__when { font: 500 11px/1.4 var(--font-body); letter-spacing: 0.14em; text-transform: uppercase; color: var(--zs-800); }

/* research (old) */
.venues { margin-top: var(--zs-space-5); display: flex; flex-wrap: wrap; gap: 8px; }
.venues span { font: 600 13px/1 var(--font-display); color: var(--zs-ink); padding: 10px 14px; border: 1px solid var(--zs-hairline-lit); border-radius: 10px; background: var(--zs-field-panel); }
.rgrid { margin-top: var(--zs-space-6); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px; background: var(--zs-seam); border-radius: var(--zs-radius-panel); overflow: hidden; }
.rgrid article { background: var(--zs-field-panel); padding: var(--zs-space-5); display: grid; gap: 6px; align-content: start; transition: background var(--zs-dur-state); }
.rgrid article:hover { background: linear-gradient(165deg, #1b1b21, #0d0d11); }
.rgrid article.on { background: linear-gradient(165deg, #222229, #0e0e12); }
.r__name { font: 600 22px/1.25 var(--font-display); letter-spacing: -0.015em; }
.r__sub { font: 400 13px/1.4 var(--font-display); color: var(--zs-ash); }
.r__line { margin-top: 6px; font-size: 15px; line-height: 1.7; }
.r__tags { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; }
.r__tags span { font: 500 10px/1 var(--font-body); letter-spacing: 0.14em; text-transform: uppercase; color: var(--zs-800); border: 1px solid var(--zs-hairline); border-radius: 6px; padding: 6px 8px; }
.research__note { margin-top: var(--zs-space-4); font-size: 13px; color: var(--zs-600); }

/* the light that sweeps down the page when a view is chosen */
.sweep { position: fixed; left: 0; right: 0; top: 0; height: 70vh; z-index: 40; pointer-events: none; opacity: 0;
  background: linear-gradient(180deg, transparent, rgba(245, 244, 242, 0.05) 40%, rgba(245, 244, 242, 0.14) 50%, rgba(245, 244, 242, 0.05) 60%, transparent); }
.sweep.run { animation: sweep 1000ms var(--zs-ease) forwards; }
@keyframes sweep { 0% { opacity: 1; transform: translateY(-70vh); } 85% { opacity: 1; } 100% { opacity: 0; transform: translateY(100vh); } }

@media (max-width: 860px) {
  :root { --head-h: 80px; }
  .nav { padding-inline: 12px; top: calc(env(safe-area-inset-top, 0px) + 10px); }
  .nav__glass, .nav.compact .nav__glass, .nav.compact.peek .nav__glass { width: 100%; height: 54px; padding: 0 6px 0 14px; gap: 8px; }
  .nav__brand, .nav.compact:not(.peek) .nav__brand { width: 40px; }
  .nav__brand .lockup { opacity: 0; }
  .brandmark { opacity: 1; transform: none; }
  .nav__full { display: none; }
  .nav__status, .nav.compact .nav__status { opacity: 1; transform: none; pointer-events: auto; justify-content: flex-start; padding: 0 4px; gap: 8px; }
  .st__act, .st__sep { display: none; }
  .where__roll { font-size: 13px; color: var(--zs-ink); }
  .viewchip > button { max-width: 128px; padding: 8px 12px; }
  .viewchip > button b { overflow: hidden; text-overflow: ellipsis; }
  section { padding-block: 64px; }
  .top__row { grid-template-columns: auto 1fr; row-gap: 8px; padding-block: 10px 9px; }
  .top.scrolled .top__row { padding-block: 7px 8px; }
  .top__mid { grid-column: 1 / -1; grid-row: 2; justify-items: stretch; gap: 7px; }
  .where { order: -1; max-width: none; font-size: 12px; }
  .acts { gap: 6px; }
  .acts a { flex: 1; padding: 0; justify-items: stretch; }
  .acts a span { display: none; }
  .acts i { width: auto; }
  .progress { display: none; }
  .top { border-bottom: 1px solid var(--zs-hairline); }
  .hero { padding-top: 46vh; padding-bottom: 56px; }
  .hero__cue { display: none; }
  .sign { flex-direction: column; align-items: flex-start; gap: var(--zs-space-5); padding-block: 48px 32px; }
  .rgrid { grid-template-columns: 1fr; }
  .rstats { grid-template-columns: 1fr 1fr; }
  .bigcount { grid-template-columns: 1fr; gap: var(--zs-space-3); }
  .stage { grid-template-columns: 1fr; gap: 0; }
  .stage__viz { top: calc(var(--head-h) + 4px); margin-inline: calc(-1 * var(--gutter)); padding: 0 var(--gutter) 10px; background: linear-gradient(var(--zs-base) 80%, transparent); }
  .focus { height: 34vh; min-height: 230px; padding: 14px 16px; gap: 8px; }
  .focus__icon { width: 38px; height: 38px; }
  .focus__name { font-size: 18px; }
  .stage .layers li.step { min-height: 56vh; padding: 28px 0; }
  .rwords { grid-template-columns: 1fr 1fr; }
  .pipe { grid-template-columns: 1fr; }
  .pipe li:not(:last-child)::after { content: "↓"; right: auto; left: 16px; top: auto; bottom: -9px; }
  .research .areas { grid-auto-rows: auto; height: auto; }
  .area { flex: 0 0 82%; }
  .explorer { grid-template-columns: 1fr; }
  .areas { position: static; display: flex; overflow-x: auto; gap: 8px; padding-bottom: 6px; margin-inline: calc(-1 * var(--gutter)); padding-inline: var(--gutter); scroll-snap-type: x mandatory; }
  .area { flex: 0 0 78%; scroll-snap-align: start; }
  .apanel canvas { height: 180px; }
  .apanel__body { padding: var(--zs-space-4) var(--zs-space-4) var(--zs-space-5); }
  .apanel__cols { grid-template-columns: 1fr; }
  .pub { grid-template-columns: 1fr; }
  .pub__meta { grid-row: auto; display: flex; flex-wrap: wrap; align-items: center; }
  .opengrid { grid-template-columns: 1fr 1fr; }
  .cited { grid-template-columns: 1fr 1fr; }
  .team__grid { grid-template-columns: 1fr; gap: var(--zs-space-4); }
  .tstats { grid-template-columns: 1fr 1fr; }
  .journey { grid-template-columns: 1fr; padding-left: 28px; }
  .journey::before, .journey::after { left: 5px; }
  .jn:nth-child(odd), .jn:nth-child(even) { grid-column: 1; text-align: left; margin-top: 0; }
  .jn:nth-child(odd) .jn__dot, .jn:nth-child(even) .jn__dot { left: -28px; right: auto; }
  .jn:nth-child(odd) .jn__line { margin-left: 0; }
  .jn { padding-bottom: 28px; }
  .toplink { display: none; }
  .stack__grid { margin-top: var(--zs-space-5); gap: var(--zs-space-5); }
  .cards { grid-template-columns: 1fr; }
  .stack__grid, .proof__grid { grid-template-columns: 1fr; }
  .stack svg { max-width: 250px; }
  .stack .stack__grid { grid-template-columns: 1fr; }
  .stack .stack__grid > svg { position: static; }
  .layers li { grid-template-columns: 1fr; }
  .problems { grid-template-columns: 1fr; }
  .wdg, .steps, .whygrid { grid-template-columns: 1fr; }
  /* phones: the motif owns the top of the hero, the words sit beneath it */
  .hero__art { width: 100%; height: 44%; top: 0; opacity: 0; }
  .hero__art.on { opacity: 0.95; }
  .path ol { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .opengrid { grid-template-columns: 1fr; }
  .cited { grid-template-columns: 1fr; }
  .viewchip > button { padding: 8px 10px; }
  .viewchip .vlabel { display: none; }
  .layers li { grid-template-columns: 1fr; gap: 4px; }
  .facts div { grid-template-columns: 1fr; gap: 2px; }
  .path ol { grid-template-columns: 1fr; }
  .stat { padding: var(--zs-space-5); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero::before, .hero__cue i { animation: none; }
  .js .card.pre { transform: none; }
  .card, .card::after { transition: opacity var(--zs-dur-state); }
  .card:hover::after { transform: none; }
  .sweep.run { animation: none; }
  .scan { animation: none; opacity: 0; }
  .jn { opacity: 1; }
  .slab .lift { transition: none; }
  .nav__glass::before { animation: none; }
  .bigcount::after { animation: none; }
  .js .rise { opacity: 1; transform: none; transition: none; }
  .js .reveal { transition: none; background-position: 0 0; }
  .btn::after { display: none; }
}
.close__lead { margin-top: var(--zs-space-5); font: 500 clamp(1.125rem, 1.8vw, 1.375rem)/1.3 var(--font-display); color: var(--zs-ink); }
.close__lead + .close__sub { margin-top: 6px; }
.faqlist { margin-top: var(--zs-space-6); display: grid; border-top: 1px solid var(--zs-hairline); }
.qa { border-bottom: 1px solid var(--zs-hairline); }
.qa summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: var(--zs-space-4); padding: 22px 0; min-height: 44px; font: 500 clamp(1.0625rem, 1.6vw, 1.25rem)/1.4 var(--font-display); }
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after { content: "+"; flex: 0 0 auto; width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--zs-hairline-lit); color: var(--zs-ash); transition: transform var(--zs-dur-state) var(--zs-ease); }
.qa[open] summary::after { transform: rotate(45deg); color: var(--zs-ink); }
.qa summary:hover { color: var(--zs-ink); }
.qa p { padding: 0 0 22px; max-width: 70ch; color: var(--zs-800); line-height: 1.75; }
/* brochure reader */
.lprod__bro { justify-self: start; font: 500 13px/1.3 var(--font-display); color: var(--zs-ink); text-decoration: none; border-bottom: 1px solid var(--zs-hairline-lit); padding-block: 4px; }
.lprod__bro:hover { border-color: var(--zs-ink); }
.lprod.flag-on { animation: flagOn 2.4s var(--zs-ease); }
@keyframes flagOn { 0%, 60% { border-color: rgba(245, 244, 242, 0.7); box-shadow: 0 0 0 4px rgba(245, 244, 242, 0.08); } 100% { border-color: var(--zs-hairline); box-shadow: none; } }
.bro { position: fixed; inset: 0; z-index: 60; display: grid; place-items: center; padding: 20px; background: rgba(5, 5, 6, 0.72); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); }
.bro__panel { width: min(1180px, 100%); max-height: calc(100dvh - 40px); overflow-y: auto; border-radius: var(--zs-radius-section); border: 1px solid var(--zs-hairline-lit); background: var(--zs-graphite); box-shadow: 0 40px 80px -30px rgba(0, 0, 0, 0.95); animation: sheet 360ms var(--zs-ease); }
.bro__head { position: sticky; top: 0; z-index: 1; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; padding: 20px 24px; background: rgba(23, 23, 28, 0.94); border-bottom: 1px solid var(--zs-hairline); }
.bro__head h2 { font: 600 22px/1.2 var(--font-display); }
.bro__actions { display: flex; align-items: center; gap: 14px; }
.bro__explore { font: 500 14px/1 var(--font-display); color: var(--zs-800); text-decoration: none; }
.bro__explore:hover { color: var(--zs-ink); }
.bro__close { width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--zs-hairline-lit); background: transparent; cursor: pointer; font-size: 22px; line-height: 1; color: var(--zs-ink); }
.bro__pages { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding: 20px 24px 28px; }
.bro__pages img { width: 100%; height: auto; display: block; border-radius: 10px; background: var(--zs-field-panel); }
@media (max-width: 760px) { .bro { padding: 0; } .bro__panel { max-height: 100dvh; border-radius: 0; } .bro__pages { grid-template-columns: 1fr; padding: 12px; } .bro__head { padding: 14px 16px; } .bro__explore { display: none; } }
.press { margin-top: var(--zs-space-6); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--zs-space-4); }
.pressitem { display: grid; gap: 10px; align-content: start; padding: var(--zs-space-5); text-decoration: none; border-radius: var(--zs-radius-panel); border: 1px solid var(--zs-hairline); background: var(--zs-field-panel); transition: border-color var(--zs-dur-state) var(--zs-ease); }
.pressitem:hover { border-color: rgba(245, 244, 242, 0.3); }
.press__title { font: 600 clamp(1.25rem, 2vw, 1.5rem)/1.3 var(--font-display); letter-spacing: -0.015em; }
.press__line { font-size: 15px; line-height: 1.65; color: var(--zs-800); }
.press__go { margin-top: 4px; font: 500 13px/1.3 var(--font-display); color: var(--zs-ink); }
@media (max-width: 860px) { .press { grid-template-columns: 1fr; } }
/* cards without photography: type and light do the work */
.pressitem { position: relative; overflow: hidden; padding-top: 0; }
.press__art { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 150px; margin: 0 calc(-1 * var(--zs-space-5)) 10px; padding: 0 var(--zs-space-5); border-bottom: 1px solid var(--zs-hairline); background: radial-gradient(90% 140% at 100% 0%, rgba(245, 244, 242, 0.1), transparent 60%), var(--zs-field-diagonal); overflow: hidden; }
.press__icon { width: 48px; height: 48px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 14px; border: 1px solid rgba(255, 255, 255, 0.14); background: linear-gradient(160deg, #2a2a31, #111115); color: var(--zs-ink); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08); }
.press__icon svg { width: 24px; height: 24px; }
.press__big { font: 600 clamp(2.5rem, 5vw, 4.25rem)/1 var(--font-display); letter-spacing: -0.04em; white-space: nowrap; background: linear-gradient(100deg, rgba(245, 244, 242, 0.22) 0 35%, #f5f4f2 50%, rgba(245, 244, 242, 0.22) 65% 100%); background-size: 250% 100%; background-position: 100% 0; -webkit-background-clip: text; background-clip: text; color: transparent; }
.pressitem.in .press__big { animation: typelight 2.2s var(--zs-ease) 0.2s forwards; }
.pressitem:hover .press__big { animation: typelight 1.6s var(--zs-ease) forwards; }
@keyframes typelight { from { background-position: 100% 0; } to { background-position: -40% 0; color: transparent; } }
.pressitem.in .press__big { background-image: linear-gradient(100deg, rgba(245, 244, 242, 0.85) 0 35%, #ffffff 50%, rgba(245, 244, 242, 0.85) 65% 100%); }
.lprod__mono { width: 34px; height: 34px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 10px; border: 1px solid rgba(255, 255, 255, 0.14); font: 600 13px/1 var(--font-display); letter-spacing: -0.02em; color: var(--zs-ink); background: linear-gradient(100deg, transparent 30%, rgba(245, 244, 242, 0.16) 50%, transparent 70%) 150% 0 / 300% 100% no-repeat, linear-gradient(160deg, #2a2a31, #111115); animation: monolight 5s linear infinite; }
@keyframes monolight { from { background-position: 150% 0, 0 0; } to { background-position: -150% 0, 0 0; } }
@media (prefers-reduced-motion: reduce) { .lprod__mono { animation: none; } .press__big { background: none; color: var(--zs-ink); -webkit-text-fill-color: var(--zs-ink); animation: none !important; } }
html:not(.js) .press__big { background: none; color: var(--zs-ink); -webkit-text-fill-color: var(--zs-ink); }
/* the Viewing chip: a ring of light, rays outward, a one-time hint */
@property --chip { syntax: "<angle>"; inherits: false; initial-value: 0deg; }
.viewchip > button { position: relative; isolation: isolate; }
.viewchip > button::before { content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1.5px; pointer-events: none;
  background: conic-gradient(from var(--chip), transparent 0 52%, rgba(245, 244, 242, 0.15) 62%, #f5f4f2 72%, rgba(245, 244, 242, 0.15) 82%, transparent 90%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude;
  animation: chipspin 3.2s linear infinite; }
@keyframes chipspin { to { --chip: 360deg; } }
.viewchip > button::after { content: ""; position: absolute; inset: -1px; border-radius: inherit; pointer-events: none; border: 1px solid rgba(245, 244, 242, 0.5); animation: chipripple 2.8s var(--zs-ease) infinite; }
@keyframes chipripple { 0% { transform: scale(1); opacity: 0.7; } 70%, 100% { transform: scale(1.14, 1.5); opacity: 0; } }
.rays { position: absolute; inset: 0; pointer-events: none; }
.rays i { position: absolute; top: 50%; left: 50%; width: 16px; height: 1px; border-radius: 1px; background: linear-gradient(90deg, rgba(245, 244, 242, 0.9), transparent); transform-origin: 0 50%; opacity: 0; animation: ray 2.8s var(--zs-ease) infinite; }
.rays i:nth-child(1) { --a: 180deg; --r: 92px; }
.rays i:nth-child(2) { --a: 0deg; --r: 92px; animation-delay: 0.15s; }
.rays i:nth-child(3) { --a: 200deg; --r: 70px; animation-delay: 0.3s; }
.rays i:nth-child(4) { --a: -20deg; --r: 70px; animation-delay: 0.45s; }
.rays i:nth-child(5) { --a: 160deg; --r: 70px; animation-delay: 0.6s; }
.rays i:nth-child(6) { --a: 20deg; --r: 70px; animation-delay: 0.75s; }
@keyframes ray { 0% { opacity: 0; transform: rotate(var(--a)) translateX(calc(var(--r) * 0.55)) scaleX(0.2); } 25% { opacity: 1; } 70%, 100% { opacity: 0; transform: rotate(var(--a)) translateX(calc(var(--r) * 1.1)) scaleX(1); } }
.chip-used .viewchip > button::after, .chip-used .rays { display: none; }
.chip-used .viewchip > button::before { animation-duration: 9s; opacity: 0.5; }
.chiphint { position: absolute; top: calc(100% + 12px); right: 0; white-space: nowrap; padding: 8px 12px; border-radius: 999px; font: 500 12.5px/1 var(--font-display); color: var(--zs-base); background: var(--zs-field-button); box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.8); animation: sheet 420ms var(--zs-ease); transition: opacity 500ms var(--zs-ease); }
.chiphint.out { opacity: 0; }
@media (prefers-reduced-motion: reduce) { .viewchip > button::before, .viewchip > button::after, .rays i { animation: none; } .rays { display: none; } }
.ambient { position: fixed; inset: 0; width: 100vw; height: 100vh; z-index: 25; pointer-events: none; mix-blend-mode: screen; opacity: 0.8; }
@media (prefers-reduced-motion: reduce) { .ambient { display: none; } }
.hero__art { translate: 0 calc(var(--py, 0) * 0.32px); }
#heroCopy { translate: 0 calc(var(--py, 0) * 0.1px); }
.hero::before { translate: 0 calc(var(--py, 0) * 0.18px); }
.path__cta { margin-top: var(--zs-space-6); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: var(--zs-space-5); padding: var(--zs-space-5) var(--zs-space-6); border-radius: var(--zs-radius-section); border: 1px solid var(--zs-hairline-lit); background: radial-gradient(80% 140% at 0% 0%, rgba(245, 244, 242, 0.08), transparent 60%), var(--zs-field-diagonal); }
.path__cta > div:first-child { display: grid; gap: 6px; max-width: 52ch; }
.path__cta .close__sub { margin: 0; color: var(--zs-800); font: 400 clamp(1rem, 1.5vw, 1.125rem)/1.55 var(--font-display); }
.path__cta .close__row { margin: 0; }
@media (max-width: 760px) { .path__cta { padding: var(--zs-space-5); } }
/* the chip, louder until a view is chosen: sparks, a sweep of light, a live chevron */
.viewchip > button b { background: linear-gradient(100deg, var(--zs-ink) 0 40%, #ffffff 48%, rgba(245, 244, 242, 0.55) 52%, var(--zs-ink) 60% 100%); background-size: 300% 100%; background-position: 100% 0; -webkit-background-clip: text; background-clip: text; color: transparent; animation: chipsheen 4.2s var(--zs-ease) infinite; }
@keyframes chipsheen { 0%, 45% { background-position: 100% 0; } 85%, 100% { background-position: 0% 0; } }
.chev { display: grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; background: var(--zs-field-button); color: var(--zs-base); box-shadow: 0 0 12px rgba(245, 244, 242, 0.45); animation: chevbob 1.6s var(--zs-ease) infinite; }
.chev svg { width: 12px; height: 12px; }
@keyframes chevbob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(2px); } }
.viewchip > button[aria-expanded="true"] .chev { transform: rotate(180deg); animation: none; }
.sparks { position: absolute; inset: -14px -18px; pointer-events: none; }
.sparks i { position: absolute; width: 9px; height: 9px; background: #fff; clip-path: polygon(50% 0, 62% 38%, 100% 50%, 62% 62%, 50% 100%, 38% 62%, 0 50%, 38% 38%); filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.9)); opacity: 0; animation: spark 2.6s ease-in-out infinite; }
.sparks i:nth-child(1) { left: 4%; top: 10%; animation-delay: 0s; }
.sparks i:nth-child(2) { left: 30%; top: -4%; animation-delay: 0.35s; width: 6px; height: 6px; }
.sparks i:nth-child(3) { right: 6%; top: 4%; animation-delay: 0.7s; }
.sparks i:nth-child(4) { right: -2%; top: 52%; animation-delay: 1.05s; width: 7px; height: 7px; }
.sparks i:nth-child(5) { right: 24%; bottom: -6%; animation-delay: 1.4s; }
.sparks i:nth-child(6) { left: 12%; bottom: 0; animation-delay: 1.75s; width: 6px; height: 6px; }
.sparks i:nth-child(7) { left: -3%; top: 46%; animation-delay: 2.1s; width: 7px; height: 7px; }
@keyframes spark { 0%, 100% { opacity: 0; transform: scale(0.2) rotate(0deg); } 30% { opacity: 1; transform: scale(1) rotate(45deg); } 55% { opacity: 0; transform: scale(0.4) rotate(90deg); } }
.chip-used .sparks, .chip-used .chev { animation: none; }
.chip-used .sparks { display: none; }
.chip-used .viewchip > button b { animation: none; background: none; color: var(--zs-ink); -webkit-text-fill-color: var(--zs-ink); }
.chiphint { font-size: 13px; padding: 10px 14px; }
.chiphint::before { content: ""; position: absolute; top: -5px; right: 28px; width: 10px; height: 10px; background: #f3f2f0; transform: rotate(45deg); border-radius: 2px; }
/* the menu unfolds from the chip; options cascade in */
.menu:not([hidden]) { transform-origin: top right; animation: menuin 420ms var(--zs-ease); }
@keyframes menuin { from { opacity: 0; transform: translateY(-8px) scale(0.96); } to { opacity: 1; transform: none; } }
.menu:not([hidden]) button { animation: itemin 480ms var(--zs-ease) backwards; }
.menu:not([hidden]) button:nth-of-type(1) { animation-delay: 60ms; }
.menu:not([hidden]) button:nth-of-type(2) { animation-delay: 110ms; }
.menu:not([hidden]) button:nth-of-type(3) { animation-delay: 160ms; }
.menu:not([hidden]) button:nth-of-type(4) { animation-delay: 210ms; }
.menu:not([hidden]) button:nth-of-type(5) { animation-delay: 260ms; }
.menu:not([hidden]) button:nth-of-type(6) { animation-delay: 310ms; }
@keyframes itemin { from { opacity: 0; transform: translateX(10px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .sparks { display: none; } .chev, .viewchip > button b, .menu:not([hidden]), .menu:not([hidden]) button { animation: none; } .viewchip > button b { background: none; color: var(--zs-ink); -webkit-text-fill-color: var(--zs-ink); } }
@media (max-width: 860px) { .chiphint { right: -4px; } .sparks { inset: -10px -10px; } }
/* Our DNA: the letters unfold into Discover · Navigate · Accelerate */
.dna { display: inline-flex; align-items: baseline; gap: 14px; margin: 0; font: 600 13px/1 var(--font-display); letter-spacing: 0.2em; text-transform: uppercase; color: var(--zs-ink); }
.dna__lbl { font: 500 10px/1 var(--font-body); letter-spacing: 0.24em; color: var(--zs-ash); }
.dna__set { display: inline-flex; align-items: baseline; gap: 0.55em; }
.dna__w { display: inline-flex; align-items: baseline; }
.dna__w b { font-weight: 600; font-size: 1.35em; letter-spacing: 0.08em; color: var(--zs-ink); transition: font-size 700ms var(--zs-ease), letter-spacing 700ms var(--zs-ease); }
.dna__w i { font-style: normal; display: inline-block; max-width: 0; overflow: hidden; white-space: nowrap; opacity: 0; vertical-align: bottom; transition: max-width 900ms var(--zs-ease), opacity 700ms var(--zs-ease); }
.dna__dot { opacity: 0; transition: opacity 600ms var(--zs-ease) 900ms; color: var(--zs-ash); }
.dna.in .dna__w b { font-size: 1em; letter-spacing: 0.2em; }
.dna.in .dna__w i { max-width: 9em; opacity: 1; }
.dna.in .dna__w:nth-of-type(2) i { transition-delay: 250ms; }
.dna.in .dna__w:nth-of-type(3) i { transition-delay: 500ms; }
.dna.in .dna__dot { opacity: 1; }
html:not(.js) .dna__w i { max-width: none; opacity: 1; } html:not(.js) .dna__dot { opacity: 1; } html:not(.js) .dna__w b { font-size: 1em; letter-spacing: 0.2em; }
@media (max-width: 520px) { .dna { flex-direction: column; align-items: flex-start; gap: 8px; } }
@media (prefers-reduced-motion: reduce) { .brandmark::before, .ring .orbit { animation: none; } }
.dna--hero { margin-top: var(--zs-space-6); }
.dna--hero .dna__w i, .dna--hero .dna__w b { transition-delay: 700ms; }
.dna--hero.in .dna__w:nth-of-type(2) i { transition-delay: 950ms; }
.dna--hero.in .dna__w:nth-of-type(3) i { transition-delay: 1200ms; }
.dna--hero .dna__dot { transition-delay: 1600ms; }
/* large screens at 100% scaling: scale the whole layout so 4K and 5K read like HD, at native sharpness */
@media (min-width: 2400px) { html { zoom: 1.25; } }
@media (min-width: 3000px) { html { zoom: 1.6; } }
@media (min-width: 3600px) { html { zoom: 2; } }
@media (min-width: 4800px) { html { zoom: 2.5; } }
/* tablets: the chip keeps its label short */
@media (max-width: 860px) { .viewchip .vlabel { display: none; } }
@media (min-width: 521px) and (max-width: 860px) { .viewchip > button { max-width: none; } }
/* ── phones: same content, shaped for a small screen ── */
.more { display: none; }
@media (max-width: 760px) {
  section { padding-block: 52px; }
  .sec-head h2 { font-size: clamp(1.625rem, 7vw, 2rem); }
  .card canvas { height: 108px; }
  .card__body { padding: 14px 18px 12px; }
  .card__foot { padding: 10px 18px 12px; }
  .rows { gap: var(--zs-space-4); margin-top: var(--zs-space-5); }
  .stage .layers li.step { min-height: 44vh; padding: 22px 0; }
  .path ol { grid-template-columns: 1fr 1fr; }
  .path li { padding: 16px; }
  .path b { font-size: 16px; }
  .path li p { font-size: 12.5px; line-height: 1.5; }
  .opengrid, .cited, .press { display: grid; grid-auto-flow: column; grid-template-columns: none; grid-auto-columns: 84%; gap: 10px; overflow-x: auto; scroll-snap-type: x mandatory; margin-inline: calc(-1 * var(--gutter)); padding: 0 var(--gutter) 8px; background: none; border-radius: 0; scrollbar-width: none; }
  .opengrid::-webkit-scrollbar, .cited::-webkit-scrollbar, .press::-webkit-scrollbar { display: none; }
  .opengrid > *, .cited > *, .press > * { scroll-snap-align: start; }
  .cite { border-radius: var(--zs-radius-panel); border: 1px solid var(--zs-hairline); }
  .flag { height: 150px; }
  .jn--minor { display: none; }
  .journey.all .jn--minor { display: grid; }
  .pub--more { display: none; }
  .pubs.all .pub--more { display: grid; }
  .more { display: inline-flex; align-items: center; gap: 8px; margin-top: var(--zs-space-4); min-height: 44px; padding: 10px 18px; border-radius: 999px; border: 1px solid var(--zs-hairline-lit); background: rgba(255, 255, 255, 0.03); cursor: pointer; font: 500 14px/1 var(--font-display); color: var(--zs-ink); }
  .rblock { margin-top: var(--zs-space-6); }
  .apanel__body { gap: var(--zs-space-3); }
  .bigcount { padding: 24px; }
  .faq .qa summary { padding: 18px 0; }
}
.refsbox summary { cursor: pointer; list-style: none; display: flex; align-items: center; gap: 8px; min-height: 32px; }
.refsbox summary::-webkit-details-marker { display: none; }
.refsbox summary::after { content: "+"; color: var(--zs-ash); }
.refsbox[open] summary::after { content: "–"; }
.refsbox[open] .refs { margin-top: 10px; }
@media (max-width: 760px) {
  .lprods { grid-auto-flow: column; grid-template-columns: none; grid-auto-columns: 86%; overflow-x: auto; scroll-snap-type: x mandatory; margin-inline: calc(-1 * var(--gutter)); padding: 0 var(--gutter) 6px; scrollbar-width: none; }
  .lprods::-webkit-scrollbar { display: none; }
  .lprods > * { scroll-snap-align: start; }
  .lprods:has(> :only-child) { grid-auto-columns: 100%; }
  .pipe { grid-template-columns: 1fr 1fr; }
  .pipe li { padding: 12px; }
  .pipe li:not(:last-child)::after { display: none; }
  .pipe p:not(.label) { font-size: 12.5px; line-height: 1.45; }
  .stage .layers li.step { min-height: 0; padding: 26px 0; }
}
@media (max-width: 760px) {
  .research:not(.all) .rblock--extra { display: none; }
  .more--research { display: flex; width: 100%; justify-content: center; margin-top: var(--zs-space-5); }
  .card canvas { height: 92px; }
  .card__problem { font-size: 1.0625rem; }
  .jn { padding-bottom: 20px; }
  .wdg > div { padding: 16px 18px; }
}

/* link to the reference architecture */
.archlink { display: inline-flex; align-items: center; gap: 8px; margin-top: var(--zs-space-4); padding: 10px 18px; border-radius: 999px; border: 1px solid var(--zs-hairline-lit); background: rgba(255, 255, 255, 0.04); color: var(--zs-ink); font: 500 14px/1 var(--font-display); text-decoration: none; transition: background var(--zs-dur-state) var(--zs-ease), border-color var(--zs-dur-state) var(--zs-ease); }
.archlink span { transition: transform var(--zs-dur-state) var(--zs-ease); }
.archlink:hover { background: rgba(255, 255, 255, 0.08); border-color: rgba(245, 244, 242, 0.4); }
.archlink:hover span { transform: translateX(3px); }
.archlink--foot { margin-top: var(--zs-space-3); padding: 8px 14px; font-size: 13px; }

/* pages: always visible, separate from the in-page progress (Discover · Navigate · Accelerate) */
.pages { display: flex; align-items: center; gap: 2px; margin-right: 4px; }
.pagelink { padding: 9px 12px; border-radius: 999px; font: 500 13px/1 var(--font-display); color: var(--zs-800); text-decoration: none; transition: background var(--zs-dur-state) var(--zs-ease), color var(--zs-dur-state) var(--zs-ease); }
.pagelink:hover { background: rgba(255, 255, 255, 0.07); color: var(--zs-ink); }
@media (max-width: 860px) { .pages { display: none; } }
.sheet__act button.sheet__page::before { width: 6px; height: 6px; background: none; border: 1px solid var(--zs-700); border-radius: 2px; }
.sheet__act button.sheet__page::after { content: "→"; margin-left: auto; color: var(--zs-600); }

/* standalone pages (research): the first section clears the floating nav */
.nav--page + main > section:first-child { border-top: 0; padding-top: calc(var(--head-h) + clamp(32px, 6vh, 72px)); }
.sec-head h1 { margin-top: var(--zs-space-3); font-size: clamp(2.25rem, 5vw, 3.5rem); line-height: 1.08; letter-spacing: -0.025em; font-weight: 600; max-width: 22ch; }
.sec-head h1 span { display: block; font-weight: 200; }
#rFor { margin-top: 6px; color: var(--zs-ash); font-size: 14px; }

/* the dot-art sign-off opens the footer on every page */
.flag--foot { margin: var(--zs-space-6) 0 0; }
.proofline { margin-top: var(--zs-space-4); font-size: 13px; line-height: 1.6; color: var(--zs-ash); }

/* hero doors: demo first, the platform second */
.hero__cta { margin-top: var(--zs-space-5); display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; }
.hero__cta .archlink { margin-top: 0; }
.navcta--home { margin-right: 4px; }
@media (max-width: 860px) { .nav__right .navcta--home { display: none; } }
/* product cards: what it replaces, and where to read more */
.lprod__instead { margin-top: 10px; font-size: 13px; line-height: 1.5; color: var(--zs-800); }
.lprod__instead b { display: block; font: 500 10px/1.6 var(--font-body); letter-spacing: 0.2em; text-transform: uppercase; color: var(--zs-ash); }
.lprod__links { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 6px 16px; }
.lprod__links .lprod__bro { margin-top: 0; }
/* AI governs AI: the live policy log */
.govlog { margin: var(--zs-space-4) 0 0; padding: 16px 18px; border-radius: var(--zs-radius-panel); border: 1px solid var(--zs-hairline-lit); background: linear-gradient(165deg, #101014, #08080a); font: 400 12.5px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; }
.govlog figcaption { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; margin-bottom: 10px; font: 500 11px/1.4 var(--font-body); letter-spacing: 0.16em; text-transform: uppercase; color: var(--zs-ash); }
.govlog figcaption b { color: var(--zs-ink); font-weight: 600; }
.govlog__dot { width: 7px; height: 7px; border-radius: 50%; background: #7ee2a8; box-shadow: 0 0 10px 2px rgba(126, 226, 168, 0.5); animation: govpulse 1.6s ease-in-out infinite; }
@keyframes govpulse { 50% { opacity: 0.35; } }
.govlog ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.govlog li { display: grid; grid-template-columns: 8.5em minmax(0, 1.15fr) minmax(0, 1fr); gap: 12px; align-items: baseline; padding: 6px 10px; border-radius: 8px; opacity: 0.18; transform: translateY(4px); transition: opacity 420ms var(--zs-ease), transform 420ms var(--zs-ease), background 420ms; }
.govlog li.on { opacity: 1; transform: none; }
.govlog .g-who { color: var(--zs-ash); }
.govlog code { color: var(--zs-ink); font: inherit; overflow-wrap: anywhere; }
.govlog .g-res { color: var(--zs-800); text-align: right; }
.govlog li.on.g-ok .g-res::before { content: "✓ "; color: #7ee2a8; }
.govlog li.on.g-wait .g-res::before { content: "◷ "; color: #e8c872; }
.govlog li.on.g-bad { background: rgba(255, 106, 92, 0.1); }
.govlog li.on.g-bad .g-res { color: #ff8a7e; }
.govlog li.on.g-bad .g-res::before { content: "✕ "; }
@media (max-width: 760px) { .govlog li { grid-template-columns: 1fr; gap: 2px; } .govlog .g-res { text-align: left; } }
.pub__title a { color: inherit; text-decoration: none; border-bottom: 1px solid var(--zs-hairline-lit); }
.pub__title a:hover { border-color: var(--zs-ink); }
.pub__area { margin-top: 8px; font-size: 12.5px; color: var(--zs-ash); }
.pub__area a { color: var(--zs-800); }
#areasbox { scroll-margin-top: calc(var(--head-h) + 16px); }

/* running today with: clients, then recognition, moving in opposite directions */
.trust { padding-block: clamp(28px, 5vh, 48px); overflow: hidden; }
.trust__label { text-align: center; margin-bottom: var(--zs-space-4); }
.marquee { --gap: clamp(40px, 6vw, 88px); position: relative; overflow: hidden; -webkit-mask: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee + .marquee { margin-top: var(--zs-space-4); }
.marquee__track { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 18px var(--gap); }
.marquee.run .marquee__track { flex-wrap: nowrap; justify-content: flex-start; width: max-content; padding-right: var(--gap); animation: marquee 42s linear infinite; }
.marquee--rev.run .marquee__track { animation-duration: 58s; animation-direction: reverse; }
.marquee:hover .marquee__track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }
.marquee img { display: block; height: auto; max-width: none; opacity: 0.72; filter: grayscale(1); transition: opacity 300ms var(--zs-ease); }
.marquee img:hover { opacity: 1; }
.marquee--rev li { white-space: nowrap; font: 500 12px/1 var(--font-body); letter-spacing: 0.16em; text-transform: uppercase; color: var(--zs-800); padding: 9px 14px; border: 1px solid var(--zs-hairline-lit); border-radius: 999px; background: rgba(255, 255, 255, 0.03); }
@media (max-width: 760px) { .marquee img { zoom: 0.78; } .marquee.run .marquee__track { animation-duration: 30s; } .marquee--rev.run .marquee__track { animation-duration: 40s; } }

/* ── page nav: the home capsule on the other pages, same glass, links and rim light ── */
.nav--page { --zs-ink: #f5f4f2; --zs-ash: #8d8b89; --zs-ease: cubic-bezier(0.22, 1, 0.36, 1); }
.nav--page .nav__brand .markonly { display: none; }
.nav__here { margin: 0; height: 100%; display: flex; align-items: center; justify-content: center; font: 600 10.5px/1 var(--font-display); letter-spacing: 0.22em; text-transform: uppercase; color: var(--zs-ash); }
.pagelink[aria-current="page"] { color: var(--zs-ink); background: rgba(255, 255, 255, 0.08); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08); }
.navcta { display: inline-flex; align-items: center; min-height: 40px; padding: 8px 16px; border-radius: 999px; border: 1px solid rgba(255, 255, 255, 0.12); background: rgba(255, 255, 255, 0.06); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06); font: 500 13px/1.2 var(--font-display); color: var(--zs-ink); text-decoration: none; white-space: nowrap; transition: border-color 200ms var(--zs-ease), background 200ms var(--zs-ease); }
.navcta__short { display: none; }
.navcta:hover { border-color: rgba(255, 255, 255, 0.28); background: rgba(255, 255, 255, 0.1); }
@media (max-width: 860px) {
  .nav--page { padding-inline: 12px; top: calc(env(safe-area-inset-top, 0px) + 10px); }
  .nav--page .nav__glass { width: 100%; height: 54px; padding: 0 6px 0 14px; gap: 8px; }
  .nav--page .nav__here { display: none; }
  .nav--page .pages { display: flex; margin-right: 0; }
  .nav--page .pagelink { padding: 9px 10px; }
}
@media (max-width: 520px) {
  .nav--page .nav__brand { width: 22px; }
  .nav--page .nav__brand .lockup { display: none; }
  .nav--page .nav__brand .markonly { display: block; height: 20px; }
  .nav--page .navcta { padding: 8px 12px; }
  .nav--page .navcta__long { display: none; }
  .nav--page .navcta__short { display: inline; }
  .nav--page .pagelink { padding: 9px 8px; }
}
@media (prefers-reduced-motion: reduce) { .nav--page .nav__glass::before { animation: none; } }