/* KodaStack Tech Labs. Strata K website system. One self-hosted typeface; no external requests or trackers. */
@font-face {
  font-family: "Archivo";
  font-style: normal;
  font-weight: 100 900;
  font-stretch: 62% 125%;
  font-display: swap;
  src: url("fonts/archivo-latin-wdth-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
:root {
  --ink: #0a0e14;
  --ink-2: #131a24;
  --paper: #fff;
  --mist: #eef3f6;
  --teal: #0e9488;
  --signal: #2ee6cf;
  --blue: #1f4fd1;
  --blue-deep: #173da6;
  --muted: #4a5563;
  --muted-dark: #a9b5c2;
  --line: #d5dde3;
  --line-strong: #66768c;
  --line-dark: rgba(255, 255, 255, .16);
  --error: #b42318;

  --font: "Archivo", "Helvetica Neue", Helvetica, Arial, sans-serif;

  --side: clamp(20px, 5vw, 72px);
  --max: 1320px;
  --header: 76px;

  --ease-out: cubic-bezier(.23, 1, .32, 1);
  --ease-in-out: cubic-bezier(.77, 0, .175, 1);

  --z-header: 30;
  --z-menu: 20;
  --z-skip: 50;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header) + 20px); -webkit-text-size-adjust: 100%; }
body { margin: 0; color: var(--ink); background: var(--paper); font: 400 1.0625rem/1.6 var(--font); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body.nav-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
h1, h2, h3, p, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
h1, h2, h3 { font-weight: 700; font-stretch: 112%; line-height: 1.04; letter-spacing: -.03em; text-wrap: balance; overflow-wrap: break-word; }
h1 { font-size: clamp(2.25rem, 7.2vw, 6.25rem); line-height: .98; }
h2 { font-size: clamp(2rem, 4.3vw, 3.75rem); }
h3 { font-size: clamp(1.375rem, 1.9vw, 1.75rem); letter-spacing: -.03em; line-height: 1.15; }
p { text-wrap: pretty; }
::selection { background: var(--signal); color: var(--ink); }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
.shell { width: min(100% - var(--side) * 2, var(--max)); margin-inline: auto; }
.dot { color: var(--teal); }
.skip-link { position: absolute; z-index: var(--z-skip); top: 14px; left: 16px; padding: 12px 20px; background: var(--blue); color: #fff; font-weight: 700; transform: translateY(-300%); }
.skip-link:focus { transform: none; }

/* ---------- buttons and links ---------- */
.button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 52px; padding: 14px 26px; border: 1px solid transparent; font-size: .9375rem; font-weight: 700; line-height: 1.2; touch-action: manipulation; transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .16s var(--ease-out); }
.button:active { transform: scale(.97); }
.button-blue { background: var(--blue); color: #fff; }
.button-dark { background: var(--ink); color: #fff; }
.button-outline-light { border-color: #8494a6; color: #fff; }
.button-outline-dark { border-color: var(--line-strong); color: var(--ink); }

.link-arrow::after { content: "→"; transition: transform .2s var(--ease-out); }

@media (hover: hover) and (pointer: fine) {
  .button-blue:hover { background: var(--blue-deep); }
  .button-dark:hover { background: #283443; }
  .button-outline-light:hover { background: #fff; color: var(--ink); border-color: #fff; }
  .button-outline-dark:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
  a:hover > .link-arrow::after, .link-arrow:hover::after { transform: translateX(5px); }
}

/* ---------- small type: metadata and status ---------- */
.meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 20px; font: 500 .875rem/1.4 var(--font); color: var(--muted); }
.status { display: inline-flex; align-items: center; gap: 8px; font: 500 .875rem/1.4 var(--font); white-space: nowrap; }
.status::before { content: ""; flex: none; width: 9px; height: 9px; border: 1.5px solid currentColor; }
.status[data-stage="live"]::before { background: var(--teal); border-color: var(--teal); }
.status[data-stage="building"]::before { background: linear-gradient(90deg, currentColor 50%, transparent 50%); }


/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: var(--z-header); height: var(--header); background: var(--paper); border-bottom: 1px solid #e8edf0; view-transition-name: site-header; }
.nav-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand img { width: auto; height: 46px; }
.desktop-nav { display: flex; gap: clamp(20px, 2.6vw, 40px); margin-left: auto; font-size: .9375rem; font-weight: 700; }
.desktop-nav a { position: relative; padding-block: 12px; }
.desktop-nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 6px; height: 2px; background: var(--ink); transform: scaleX(0); transform-origin: left; transition: transform .22s var(--ease-out); }
.desktop-nav a[aria-current="page"]::after { transform: scaleX(1); background: var(--teal); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.header-cta { min-height: 44px; padding: 10px 20px; }
.menu-toggle { display: none; width: 48px; height: 48px; padding: 0; border: 1px solid var(--line); background: var(--paper); position: relative; }
.menu-toggle span { position: absolute; left: 13px; right: 13px; height: 2px; background: var(--ink); transition: transform .2s var(--ease-out); }
.menu-toggle span:first-child { top: 18px; }
.menu-toggle span:last-child { top: 27px; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(4.5px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4.5px) rotate(-45deg); }
.mobile-menu { position: absolute; z-index: var(--z-menu); top: 100%; left: 0; right: 0; height: calc(100dvh - var(--header)); padding: 12px var(--side) 40px; background: var(--paper); overflow-y: auto; display: flex; flex-direction: column; transition: opacity .2s var(--ease-out), transform .2s var(--ease-out), display .2s allow-discrete; }
.mobile-menu[hidden] { display: none; opacity: 0; transform: translateY(-8px); }
@starting-style { .mobile-menu { opacity: 0; transform: translateY(-8px); } }
.mobile-menu a { display: flex; align-items: center; min-height: 64px; border-bottom: 1px solid var(--line); font-size: 1.75rem; font-weight: 700; letter-spacing: -.03em; }
.mobile-menu a[aria-current="page"] { color: var(--teal); }
@media (hover: hover) and (pointer: fine) {
  .desktop-nav a:hover::after { transform: scaleX(1); }
}

/* ---------- hero ---------- */
.hero { background: var(--ink); color: #fff; overflow: clip; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); align-items: center; gap: clamp(24px, 4vw, 72px); padding-block: clamp(56px, 8vw, 112px) clamp(40px, 6vw, 80px); }
.hero h1 { font-size: clamp(2rem, 5.6vw, 5rem); }
.hero h1 .line:nth-child(3) > span { animation-delay: .16s; }
.hero h1 .line { display: block; overflow: hidden; padding-bottom: .12em; margin-bottom: -.12em; }
.hero h1 .line > span { display: block; animation: line-up .9s var(--ease-out) both; }
.hero h1 .line:nth-child(2) > span { animation-delay: .08s; }
.hero h1 .dot { color: var(--signal); }
.hero-lead { max-width: 34ch; margin-top: clamp(24px, 3vw, 40px); font-size: clamp(1.1875rem, 1.75vw, 1.5rem); line-height: 1.4; color: #e6ebf0; animation: rise .8s .22s var(--ease-out) both; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; margin-top: clamp(28px, 3.4vw, 44px); animation: rise .8s .32s var(--ease-out) both; }
.hero-mark { justify-self: center; width: min(100%, 500px); }
@keyframes line-up { from { transform: translateY(105%); } }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } }

.lab-now { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 16px 32px; align-items: start; padding-block: 28px 36px; border-top: 1px solid var(--line-dark); }
.lab-now h2 { font: 500 .875rem/1.4 var(--font); letter-spacing: 0; color: var(--muted-dark); padding-top: 4px; }
.lab-now ul { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px 28px; }
.lab-now a { display: grid; gap: 6px; min-height: 44px; }
.lab-now b { font-size: 1.125rem; letter-spacing: -.02em; }
.lab-now .status { color: var(--muted-dark); white-space: normal; }
.lab-now .status[data-stage="live"]::before { background: var(--signal); border-color: var(--signal); }
@media (hover: hover) and (pointer: fine) { .lab-now a:hover b { color: var(--signal); } }

/* ---------- Strata K in 3D ---------- */
.k3d { position: relative; container-type: inline-size; aspect-ratio: 1; perspective: 1100px; touch-action: pan-y;
  --k-f: #fff; --k-t: #dfe6ec; --k-r: #9fb0bf; --k-l: #b9c6d1; --k-u: #6f7f8f; --k-b: #8a98a6;
  --k-af: #2ee6cf; --k-at: #9af6ea; --k-ar: #17a797; --k-al: #1fbcab; --k-au: #0c7d72; --k-ab: #0c7d72; }
.k3d-ink { --k-f: #0a0e14; --k-t: #3d4a5b; --k-r: #1e2833; --k-l: #263240; --k-u: #05070a; --k-b: #05070a;
  --k-af: #0e9488; --k-at: #45c2b6; --k-ar: #0a6f66; --k-al: #0c8177; --k-au: #075049; --k-ab: #075049; }
.k3d-fallback { position: absolute; inset: 0; width: 100%; height: 100%; }
.k3d-obj { position: absolute; inset: 0; transform-style: preserve-3d; --u: calc(100cqi / 256); --d: calc(var(--u) * 42); }
.k3d-box { position: absolute; left: calc(var(--u) * var(--x)); top: calc(var(--u) * var(--y)); width: calc(var(--u) * var(--w)); height: calc(var(--u) * var(--h)); transform-style: preserve-3d;
  --f: var(--k-f); --t: var(--k-t); --r: var(--k-r); --l: var(--k-l); --dn: var(--k-u); --b: var(--k-b); }
.k3d-box.is-lit { --f: var(--k-af); --t: var(--k-at); --r: var(--k-ar); --l: var(--k-al); --dn: var(--k-au); --b: var(--k-ab); }
.k3d-box i { position: absolute; display: block; transition: background-color .35s ease; }
.k3d-box .f { inset: 0; background: var(--f); transform: translateZ(calc(var(--d) / 2)); }
.k3d-box .b { inset: 0; background: var(--b); transform: translateZ(calc(var(--d) / -2)); }
.k3d-box .r { left: 100%; top: 0; width: var(--d); height: 100%; background: var(--r); transform-origin: 0 50%; transform: translateZ(calc(var(--d) / 2)) rotateY(90deg); }
.k3d-box .l { left: 0; top: 0; width: var(--d); height: 100%; background: var(--l); transform-origin: 0 50%; transform: translateZ(calc(var(--d) / -2)) rotateY(-90deg); }
.k3d-box .t { left: 0; top: 0; width: 100%; height: var(--d); background: var(--t); transform-origin: 50% 0; transform: translateZ(calc(var(--d) / -2)) rotateX(90deg); }
.k3d-box .u { left: 0; top: 100%; width: 100%; height: var(--d); background: var(--dn); transform-origin: 50% 0; transform: translateZ(calc(var(--d) / 2)) rotateX(-90deg); }

/* ---------- sections ---------- */
.section { padding-block: clamp(72px, 9vw, 136px); }
.section-mist { background: var(--mist); }
.section-more { margin-top: 44px; }

/* ---------- project diagrams ---------- */
.art { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg); --bg: #efe9dc; --fg: #1b2430; --ac: var(--blue); }
.art svg { width: 100%; height: 100%; transition: transform .6s var(--ease-out); }
.art .s { stroke: var(--fg); stroke-width: 2; }
.art .s2 { stroke: var(--fg); stroke-width: 1.5; stroke-dasharray: 3 7; opacity: .45; fill: none; }
.art .sa { stroke: var(--ac); stroke-width: 3; }
.art .sb { stroke: var(--blue); stroke-width: 3; }
.art .ff { fill: var(--fg); }
.art .fa { fill: var(--ac); }
.art .fs { fill: var(--fg); opacity: .22; }
.art .hl { fill: var(--ac); opacity: .28; }
.art .sheet { fill: var(--bg); }
.art .d { stroke-dasharray: 1; stroke-dashoffset: 0; transition: stroke-dashoffset 1.2s var(--ease-in-out); }
.art.pre .d { stroke-dashoffset: 1; }
.art-indigo { --bg: #131f4d; --fg: #aebcf5; --ac: var(--signal); }
.art-indigo .spin { transform-origin: 200px 200px; transition: transform .9s var(--ease-in-out); }
.art-solar { --bg: #ecd592; --ac: #0e6f66; }
.art-solar .sun { fill: #e2952b; transition: transform .9s var(--ease-out); }
.art-solar .grid { stroke: var(--bg); stroke-width: 2; }
.art-charcoal { --bg: #151d27; --fg: #8fa3b5; --ac: var(--signal); }
.art-charcoal .band { transition: transform .9s var(--ease-out); }
.art-charcoal .b0 { fill: #5d6f80; } .art-charcoal .b1 { fill: #4c5d6d; } .art-charcoal .b2 { fill: #3d4c5b; } .art-charcoal .b3 { fill: #2f3c49; } .art-charcoal .b4 { fill: #232e39; }
.art-voice { --bg: #d7efe9; --fg: #0e5f58; --ac: var(--ink); }
.art-voice .bar { fill: var(--fg); transform-box: fill-box; transform-origin: center; }
.art-safety { --bg: #d9e0e7; --ac: var(--teal); }
.art-safety .bracket { transition: transform .5s var(--ease-out); transform-box: fill-box; transform-origin: center; }
.art-persona { --bg: #dfe4fb; --fg: #1c2a6b; }
.art-persona .dot { fill: var(--fg); opacity: .32; transition: opacity .4s ease; }
.art-persona .dot.c { fill: var(--blue); opacity: 1; }
.art-docs { --bg: #e2e7e2; --ac: var(--teal); }
@keyframes bar { 50% { transform: scaleY(.35); } }
@media (hover: hover) and (pointer: fine) {
  a:hover .art svg { transform: scale(1.035); }
  a:hover .art-indigo .spin { transform: rotate(90deg); }
  a:hover .art-solar .sun { transform: translate(-30px, 14px); }
  a:hover .art-charcoal .b1, a:hover .art-charcoal .b3 { transform: translateX(-14px); }
  a:hover .art-charcoal .b2 { transform: translateX(14px); }
  a:hover .art-voice .bar { animation: bar .9s calc(var(--i) * -70ms) ease-in-out 2; }
  a:hover .art-safety .bracket { transform: scale(.94); }
  a:hover .art-persona .dot.a, a:hover .art-persona .dot.b { opacity: .7; }
}

/* ---------- cards ---------- */
.card-link { display: grid; gap: 20px; height: 100%; align-content: start; }
.card-body { display: grid; gap: 10px; }
.card-body h2, .card-body h3 { font-size: clamp(1.625rem, 2.4vw, 2.25rem); letter-spacing: -.04em; }
.card-body > p:last-child { color: var(--muted); max-width: 46ch; }
.card-body h2, .card-body h3, .flagship h3 { transition: color .18s ease; }
@media (hover: hover) and (pointer: fine) {
  .card-link:hover h2, .card-link:hover h3 { color: var(--blue); }
}

.flagship { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1fr); background: var(--mist); }
.flagship-copy { display: flex; flex-direction: column; gap: 20px; padding: clamp(28px, 4vw, 64px); }
.flagship-copy h3 { margin-top: auto; padding-top: 32px; font-size: clamp(1.75rem, 3vw, 2.875rem); letter-spacing: -.04em; line-height: 1.05; }
.flagship-copy > p:not(.meta) { color: var(--muted); max-width: 44ch; }
.flagship-art { perspective: 1200px; }
.flagship-art .art { height: 100%; min-height: 320px; aspect-ratio: auto; }
.card-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(20px, 2.4vw, 36px); margin-top: clamp(40px, 5vw, 72px); }

/* ---------- capabilities: the stack ---------- */
.stack { background: var(--mist); }
.stack-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 104px); }
.stack-sticky { position: sticky; top: max(calc(var(--header) + 24px), calc(50vh - 250px)); width: min(100%, 480px); margin-inline: auto; }
.stack-head p { margin-top: 20px; max-width: 46ch; font-size: clamp(1.125rem, 1.5vw, 1.3125rem); line-height: 1.5; color: var(--muted); }
.layers { margin-top: clamp(32px, 5vw, 72px); }
.layer { display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 24px; padding-block: clamp(28px, 4vw, 52px); border-top: 1px solid #c9d3db; }
.layer p { margin-top: 12px; max-width: 50ch; color: var(--muted); }
.k-glyph { width: 40px; height: 40px; fill: var(--ink); }
.k-glyph rect { opacity: .22; transition: opacity .3s ease, fill .3s ease; }
.k-glyph .on { opacity: 1; }
.layer.is-active .k-glyph .on { fill: var(--teal); }
.layer h3 { transition: color .3s ease; }
.layer.is-active h3 { color: var(--teal); }

/* ---------- research band ---------- */
.research-band { background: var(--ink); color: #fff; }
.research-band-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(36px, 7vw, 120px); align-items: start; }
.research-band-grid > div > p { margin-top: 24px; max-width: 44ch; font-size: 1.125rem; color: var(--muted-dark); }
@media (hover: hover) and (pointer: fine) {
}
.pub-list { border-top: 1px solid var(--line-dark); }
.pub-list a { display: grid; gap: 6px; padding-block: 22px; border-bottom: 1px solid var(--line-dark); transition: color .18s ease; }
.pub-list span { font: 500 .875rem/1.4 var(--font); color: var(--muted-dark); }
.pub-list b { font-size: 1.25rem; letter-spacing: -.02em; }
.pub-list i { font-style: normal; }
@media (hover: hover) and (pointer: fine) { .pub-list a:hover b { color: var(--signal); } }

/* ---------- call to action ---------- */

/* ---------- inner page intro ---------- */
.page-intro { padding-block: clamp(56px, 8vw, 120px) clamp(48px, 6vw, 88px); background: var(--mist); }
.page-intro h1 { max-width: 17ch; animation: rise .8s var(--ease-out) both; }
.page-intro p { margin-top: clamp(22px, 3vw, 36px); max-width: 46ch; font-size: clamp(1.125rem, 1.6vw, 1.375rem); line-height: 1.45; color: var(--muted); animation: rise .8s .1s var(--ease-out) both; }
.page-intro-small h1 { font-size: clamp(2.5rem, 5.4vw, 4.5rem); }
.page-intro .hero-actions { animation-delay: .2s; }
.page-404 { min-height: 62vh; display: grid; align-items: center; }

/* ---------- work index ---------- */
.work-index { padding-block: 40px clamp(64px, 8vw, 112px); }
.work-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 36px; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.filters button { min-height: 44px; padding: 8px 18px; border: 1px solid var(--line); background: var(--paper); font-size: .9375rem; font-weight: 700; touch-action: manipulation; transition: background-color .16s ease, color .16s ease, border-color .16s ease, transform .16s var(--ease-out); }
.filters button:active { transform: scale(.97); }
.filters button[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }
.project-count { font: 500 .875rem/1.4 var(--font); color: var(--muted); font-variant-numeric: tabular-nums; }
.work-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(44px, 5vw, 72px) clamp(20px, 2.4vw, 36px); }
.work-grid .card[hidden] { display: none; }
.card-wide { grid-column: 1 / -1; }
.card-wide ~ .card-wide .card-link { grid-template-columns: minmax(0, .75fr) minmax(0, 1.25fr); }
.card-wide ~ .card-wide .art { order: 1; }
.card-wide .card-body h2 { font-size: clamp(2.25rem, 4.4vw, 4rem); }
.legend .status { white-space: normal; }
@media (hover: hover) and (pointer: fine) {
  .filters button:hover { border-color: var(--ink); }
}

/* ---------- project page ---------- */
.project-hero { padding-block: 28px clamp(40px, 5vw, 64px); background: var(--mist); }
.back-link { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; font-size: .9375rem; font-weight: 700; }
.back-link::before { content: "←"; transition: transform .2s var(--ease-out); }
.project-hero-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(28px, 5vw, 80px); align-items: end; margin-top: clamp(20px, 3vw, 44px); }
.project-hero h1 { margin-top: 18px; font-size: clamp(2.75rem, 6.6vw, 5.75rem); animation: rise .8s var(--ease-out) both; }
.project-lead { margin-top: clamp(20px, 2.6vw, 32px); max-width: 34ch; font-size: clamp(1.1875rem, 1.8vw, 1.5rem); line-height: 1.35; letter-spacing: -.015em; }
.project-stage { margin-top: 24px; }
.split { display: grid; grid-template-columns: minmax(0, .42fr) minmax(0, .58fr); gap: 28px clamp(32px, 6vw, 96px); align-items: start; }
.prose > * + * { margin-top: 1.1em; }
.prose p { max-width: 62ch; color: var(--muted); }
.prose .large { font-size: clamp(1.25rem, 1.9vw, 1.625rem); line-height: 1.4; letter-spacing: -.015em; color: var(--ink); max-width: 36ch; }
.prose h3 { margin-top: 2em; font-size: 1.25rem; letter-spacing: -.02em; }
.prose h2 { margin-top: 2em; font-size: clamp(1.5rem, 2.2vw, 1.875rem); letter-spacing: -.03em; }
.prose h2:first-child { margin-top: 0; }
.prose a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.approach-list { max-width: 62ch; color: var(--muted); }
.approach-list li { position: relative; padding: 10px 0 10px 26px; border-top: 1px solid var(--line); }
.approach-list li::before { content: ""; position: absolute; left: 0; top: 1.25em; width: 10px; height: 2px; background: var(--teal); }
.link-buttons { display: flex; flex-wrap: wrap; gap: 12px; }
.project-nav { border-top: 1px solid var(--line); }
.project-nav-inner { display: grid; grid-template-columns: 1fr 1fr; }
.project-nav a { display: grid; gap: 6px; padding-block: clamp(28px, 4vw, 48px); transition: color .18s ease; }
.project-nav a + a { text-align: right; padding-left: 24px; border-left: 1px solid var(--line); }
.project-nav span { font: 500 .875rem/1.4 var(--font); color: var(--muted); }
.project-nav b { font-size: clamp(1.375rem, 2.6vw, 2.25rem); letter-spacing: -.035em; line-height: 1.1; }
@media (hover: hover) and (pointer: fine) {
  .back-link:hover::before { transform: translateX(-4px); }
  .project-nav a:hover b { color: var(--blue); }
}

/* ---------- research page ---------- */
.model-table { border-top: 2px solid var(--ink); }
.model-table strong { font-size: clamp(1.5rem, 2.6vw, 2.25rem); letter-spacing: -.04em; line-height: 1.1; }
.model-table a > span:not(.status) { color: var(--muted); }
.model-table a > span:nth-of-type(1) { font: 500 .875rem/1.4 var(--font); }
@media (hover: hover) and (pointer: fine) { .model-table a:hover strong { color: var(--blue); } }

/* ---------- studio ---------- */
.mark-band { background: var(--ink); color: #fff; overflow: clip; }
.mark-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 96px); align-items: center; }
.mark-visual { width: min(100%, 400px); margin-inline: auto; }
.mark-grid p { margin-top: 22px; max-width: 48ch; color: var(--muted-dark); }
.record div { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 6px 24px; padding-block: 18px; border-top: 1px solid var(--line); }
.record dt { color: var(--muted); }
.record dd { font-weight: 700; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1fr); gap: 48px clamp(40px, 7vw, 120px); align-items: start; }
.contact-side h2, .contact-form h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
.ways { margin-top: 28px; }
.ways div { padding-block: 20px; border-top: 1px solid var(--line); }
.ways dt { font-size: 1.25rem; font-weight: 700; letter-spacing: -.02em; }
.ways dd { margin-top: 6px; color: var(--muted); }
.direct { margin-top: 20px; padding-top: 28px; border-top: 2px solid var(--ink); }
.direct h3 { font-size: 1.125rem; letter-spacing: -.02em; }
.email-link { display: inline-flex; align-items: center; min-height: 44px; margin-top: 6px; font-size: clamp(1.125rem, 2vw, 1.5rem); font-weight: 700; letter-spacing: -.02em; color: var(--blue); overflow-wrap: anywhere; text-decoration: underline; text-underline-offset: 4px; }
.direct p { margin-top: 6px; font-size: .9375rem; color: var(--muted); }
.contact-form { display: grid; gap: 22px; padding: clamp(24px, 3.4vw, 48px); background: var(--mist); }
.field { display: grid; gap: 8px; }
.field label { font-size: .9375rem; font-weight: 700; }
.field input, .field select, .field textarea { width: 100%; min-height: 52px; padding: 13px 14px; border: 1px solid var(--line-strong); border-radius: 0; background: var(--paper); font-size: 1rem; transition: border-color .15s ease, box-shadow .15s ease; }
.field textarea { resize: vertical; min-height: 148px; line-height: 1.5; }
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(31, 79, 209, .28); }
.field [aria-invalid="true"] { border-color: var(--error); }
.field-hint { font-size: .875rem; color: var(--muted); }
.field-error { font-size: .875rem; font-weight: 700; color: var(--error); }
.contact-form .button { justify-self: start; }
.form-note { font-size: .875rem; color: var(--muted); }
.form-note.error { color: var(--error); font-weight: 700; }

/* ---------- legal ---------- */
.legal .prose h2 { max-width: 30ch; }

/* ---------- footer ---------- */
.site-footer { padding-block: clamp(56px, 7vw, 88px) 32px; background: var(--ink); color: #fff; }
.footer-top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 24px; }
.footer-top img { width: auto; height: 56px; }
.footer-top p { font-size: clamp(1.125rem, 1.8vw, 1.375rem); font-weight: 700; letter-spacing: -.02em; line-height: 1.3; text-align: right; }
.footer-links { display: grid; grid-template-columns: repeat(2, minmax(0, 18rem)); gap: 36px; margin-top: 48px; padding-top: 40px; border-top: 1px solid var(--line-dark); }
.footer-links h2 { margin-bottom: 14px; font: 500 .875rem/1.4 var(--font); letter-spacing: 0; color: var(--muted-dark); }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 32px; margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--line-dark); font-size: .875rem; color: var(--muted-dark); }
@media (hover: hover) and (pointer: fine) {
  .footer-links a:hover, .footer-bottom a:hover { color: var(--signal); }
}

/* ---------- scroll reveal (set by JS only for content below the fold) ---------- */
.pre[data-reveal] { opacity: 0; transform: translateY(18px); }
[data-reveal] { transition: opacity .6s var(--ease-out), transform .7s var(--ease-out); transition-delay: calc(var(--ri, 0) * 70ms); }

/* ---------- page transitions ---------- */
@view-transition { navigation: auto; }
::view-transition-old(root) { animation: vt-out .18s ease both; }
::view-transition-new(root) { animation: vt-in .4s var(--ease-out) both; }
::view-transition-group(*) { animation-duration: .45s; animation-timing-function: var(--ease-in-out); }
::view-transition-group(site-header) { z-index: 2; }
@keyframes vt-out { to { opacity: 0; } }
@keyframes vt-in { from { opacity: 0; transform: translateY(14px); } }

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  .desktop-nav, .header-cta { display: none; }
  .menu-toggle { display: block; }
  .hero-grid { grid-template-columns: 1fr; padding-top: 48px; }
  .hero-mark { width: min(64%, 320px); order: -1; justify-self: start; margin-left: -2%; }
  .lab-now { grid-template-columns: 1fr; }
  .lab-now ul { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flagship, .stack-grid, .research-band-grid, .project-hero-grid, .project-layout, .split, .mark-grid, .contact-grid { grid-template-columns: 1fr; }
  .flagship-art { order: -1; }
  .flagship-art .art { min-height: 0; aspect-ratio: 16 / 10; }
  .flagship-copy h3 { margin-top: 0; padding-top: 8px; }
  .card-row { grid-template-columns: 1fr; gap: 44px; }
  .stack-visual { display: none; }
  .card-wide .card-link { grid-template-columns: 1fr; }
  .project-hero-art { order: -1; }
  .project-hero-grid { margin-top: 12px; }
  .mark-visual { width: min(70%, 300px); margin-inline: 0; }
}
@media (max-width: 640px) {
  .work-grid { grid-template-columns: 1fr; }
  .lab-now ul { gap: 20px 16px; }
  .footer-links { grid-template-columns: 1fr; }
  .record div { grid-template-columns: 1fr; }
  .footer-top p { text-align: left; }
  .project-nav b { font-size: 1.25rem; }
  .hero-actions .button { width: 100%; }
}

/* ---------- reduced motion: keep colour and opacity, drop movement ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  @view-transition { navigation: none; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; animation-delay: 0s !important; }
  .pre[data-reveal] { transform: none; }
  .art svg, .art .d, .art .spin, .art .sun, .art .band, .art .bracket, .button, .link-arrow::after, .back-link::before { transition: none; }
  a:hover .art svg, a:hover .art .spin, a:hover .art .sun, a:hover .art .band, a:hover .art .bracket { transform: none; }
  .art.pre .d { stroke-dashoffset: 0; }
}

/* ---------- structure: single-column heads, reading column, details aside ---------- */
.link-arrow { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; font-size: .9375rem; font-weight: 700; color: var(--blue); }
.link-arrow-light { color: var(--signal); }
.section-head { display: grid; gap: 18px; max-width: 46rem; margin-bottom: clamp(36px, 4.5vw, 64px); }
.section-head p, .band-head p { max-width: 54ch; font-size: clamp(1.0625rem, 1.4vw, 1.1875rem); color: var(--muted); }
.band-head { display: grid; gap: 18px; max-width: 46rem; margin-bottom: clamp(32px, 4vw, 56px); }
.band-head p { color: var(--muted-dark); }
.card-body .meta, .flagship-copy .meta { color: var(--ink); }
.card-wide .card-link { grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); gap: clamp(20px, 3vw, 48px); align-items: start; }
.card-wide .card-body { padding-top: clamp(0px, 2vw, 28px); }
.legend { display: flex; flex-wrap: wrap; gap: 10px 28px; margin-top: clamp(48px, 6vw, 80px); padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); }
.caveat { margin-top: 14px; max-width: 78ch; font-size: .9375rem; color: var(--muted); }

.model-table a { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr) minmax(0, 1.2fr) 11rem; align-items: center; gap: 8px 28px; min-height: 44px; padding-block: 26px; border-bottom: 1px solid var(--line); }
.model-table-dark { border-top-color: #fff; }
.model-table-dark a { border-bottom-color: var(--line-dark); }
.model-table-dark a > span:not(.status) { color: var(--muted-dark); }
.model-table-dark .status[data-stage="live"]::before { background: var(--signal); border-color: var(--signal); }
@media (hover: hover) and (pointer: fine) { .model-table-dark a:hover strong { color: var(--signal); } }

.standards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 clamp(32px, 6vw, 96px); }
.standards li { padding-block: 26px; border-top: 1px solid #c9d3db; }
.standards p { margin-top: 8px; max-width: 46ch; color: var(--muted); }

.cta { padding-block: clamp(64px, 8vw, 112px); border-top: 1px solid var(--line); }
.cta h2 { max-width: 18ch; }
.cta p { margin-top: 18px; max-width: 48ch; font-size: 1.125rem; color: var(--muted); }
.cta .button { margin-top: 32px; }

.project-hero-art { margin: 0; }
.project-hero-art figcaption { margin-top: 12px; font-size: .875rem; color: var(--muted); }
.project-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, 340px); gap: 48px clamp(40px, 8vw, 128px); align-items: start; }
.project-layout .prose .large { max-width: 34ch; }
.glance { position: sticky; top: calc(var(--header) + 28px); }
.glance dl { border-top: 2px solid var(--ink); }
.glance dl div { padding-block: 14px; border-bottom: 1px solid var(--line); }
.glance dt { font-size: .875rem; color: var(--muted); }
.glance dd { margin-top: 2px; font-weight: 700; letter-spacing: -.01em; line-height: 1.35; }
.glance .link-buttons { display: grid; gap: 10px; margin-top: 24px; }
.glance .button { justify-content: space-between; }

.footer-links a { display: flex; align-items: center; gap: 6px; min-height: 44px; width: fit-content; transition: color .18s ease; }
.footer-bottom a { min-height: 44px; display: inline-flex; align-items: center; }
@media (max-width: 1000px) {
  .card-wide .card-link, .project-layout { grid-template-columns: 1fr; }
  .glance { position: static; }
  .standards { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .model-table a { grid-template-columns: 1fr; gap: 6px; }
  .cta .button, .glance .button { width: 100%; }
}
.split > h2 { font-size: clamp(1.75rem, 3vw, 2.625rem); }
.inline-links { display: flex; flex-wrap: wrap; gap: 0 28px; }
.inline-links a { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; font-weight: 700; }