/* ACE Advanced Systems — site styles
   Palette (approved 30 Sep 2026): Graphite #0E1116, Deep Navy-Grey #131A26, ACE Blue Light #597BBD, ACE Blue Light 2 #809BCC,
   Text #F2F4F7 / #C7CDD6, Steel #9AA3AE. ACE Blue #003799 is for light backgrounds and print only. */
:root {
  --ground: #0e1116;
  --ground-2: #131a26;
  --ground-3: #171d27;
  --ink: #f2f4f7;
  --ink-2: #c7cdd6;
  --steel: #9aa3ae;
  --steel-2: #6b7480;
  --line: rgba(255,255,255,.12);
  --line-2: rgba(255,255,255,.22);
  --accent: #597bbd;   /* ACE Blue Light */
  --accent-2: #809bcc; /* ACE Blue Light 2 */
  --focus: #809bcc;
  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --wrap: 1280px;
  --gutter: clamp(20px, 4vw, 56px);
  --header-h: 68px;
  --ease: cubic-bezier(.2,.6,.2,1);
  color-scheme: dark;
}
/* Single, deliberately dark visual world: both host themes get the same palette. */
:root[data-theme="light"], :root[data-theme="dark"] { color-scheme: dark; }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--ground); color: var(--ink);
  font-family: var(--font-body); font-weight: 300; font-size: 17px; line-height: 1.6;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1em; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 500; letter-spacing: -.015em; line-height: 1.08; margin: 0 0 .5em; text-wrap: balance; }
h1 { font-size: clamp(2.1rem, 5.2vw, 4.4rem); }
h2 { font-size: clamp(1.7rem, 3.6vw, 3rem); }
h3 { font-size: 1.25rem; }
strong { font-weight: 500; }
.wrap { width: min(100% - 2 * var(--gutter), var(--wrap)); margin-inline: auto; }
.narrow { max-width: 68ch; }
.narrow-p { max-width: 68ch; }
.eyebrow { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--steel); margin: 0 0 1.2em; }
.small { font-size: .85rem; color: var(--steel); }
.label { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--steel); margin: 0 0 .6em; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.35rem); color: var(--ink-2); max-width: 44ch; }

:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 2px; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--ink); color: var(--ground); padding: .6em 1em; font-weight: 500; }
.skip:focus { top: 12px; }

/* ---------- buttons & links ---------- */
.ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 1.8rem; }
.btn {
  display: inline-flex; align-items: center; gap: .5em; padding: .95em 1.5em;
  font-family: var(--font-display); font-weight: 500; font-size: .95rem; letter-spacing: .01em;
  border: 1px solid var(--line-2); border-radius: 2px; transition: background .35s var(--ease), border-color .35s var(--ease), color .35s var(--ease);
}
.btn-primary { background: var(--ink); color: var(--ground); border-color: var(--ink); }
.btn-primary:hover { background: #fff; }
.btn-ghost { background: rgba(14,17,22,.35); color: var(--ink); backdrop-filter: blur(8px); }
.btn-ghost:hover { border-color: var(--ink); }
.btn[disabled] { opacity: .6; cursor: default; }
.link {
  display: inline-block; font-family: var(--font-display); font-weight: 500; color: var(--ink);
  border-bottom: 1px solid var(--line-2); padding-bottom: .15em; transition: border-color .35s var(--ease);
}
.link:hover { border-color: var(--accent-2); }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50;
  background: linear-gradient(to bottom, rgba(14,17,22,.92), rgba(14,17,22,.72));
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 24px; }
.wordmark { display: inline-flex; align-items: center; gap: 14px; font-family: var(--font-display); white-space: nowrap; }
.logo { height: 34px; width: auto; display: block; }
.logo-footer { height: 42px; }
.wm-rest { font-weight: 400; font-size: .82rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2); padding-left: 14px; border-left: 1px solid var(--line-2); line-height: 1.1; }
.footer-brand .wm-rest { font-size: .9rem; }
.nav-list { list-style: none; margin: 0; padding: 0; display: flex; gap: clamp(14px, 2.4vw, 34px); align-items: center; }
.nav-list > li { position: relative; display: flex; align-items: center; }
.nav-list a { font-family: var(--font-display); font-size: .92rem; font-weight: 400; color: var(--ink-2); padding: .5em 0; border-bottom: 1px solid transparent; transition: color .3s var(--ease), border-color .3s var(--ease); }
.nav-list a:hover, .nav-list a[aria-current="page"] { color: var(--ink); }
.nav-list a[aria-current="page"] { border-bottom-color: var(--accent-2); }
.menu-toggle { background: none; border: 0; color: var(--ink-2); padding: .4em .35em; margin-left: .15em; cursor: pointer; display: inline-flex; border-radius: 2px; }
.menu-toggle:hover { color: var(--ink); }
.menu-toggle svg { transition: transform .3s var(--ease); }
.menu-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }
.menu {
  list-style: none; margin: 0; padding: 10px 0; position: absolute; top: calc(100% + 8px); left: -14px; min-width: 280px;
  background: #151a22; border: 1px solid var(--line); border-radius: 3px; box-shadow: 0 20px 50px rgba(0,0,0,.5);
  opacity: 0; visibility: hidden; transform: translateY(-6px); transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s;
}
.has-menu.open .menu, .has-menu:focus-within .menu { opacity: 1; visibility: visible; transform: none; }
.menu a { display: block; padding: .6em 18px; color: var(--ink-2); border-bottom: 0; font-size: .95rem; }
.menu a:hover, .menu a:focus-visible { color: var(--ink); background: rgba(255,255,255,.04); outline-offset: -2px; }
.menu li:first-child a { color: var(--steel); }
.burger { display: none; background: none; border: 0; width: 44px; height: 44px; margin-right: -10px; cursor: pointer; padding: 10px; flex-direction: column; justify-content: center; gap: 6px; border-radius: 2px; }
.burger span { display: block; height: 1.5px; background: var(--ink); transition: transform .3s var(--ease), opacity .3s; }
.burger[aria-expanded="true"] span:first-child { transform: translateY(3.75px) rotate(45deg); }
.burger[aria-expanded="true"] span:last-child { transform: translateY(-3.75px) rotate(-45deg); }
.mobile-nav { display: none; border-top: 1px solid var(--line); background: #10141b; }
.mobile-nav ul { list-style: none; margin: 0; padding: 10px var(--gutter) 22px; }
.mobile-nav li + li { border-top: 1px solid var(--line); }
.mobile-nav a, .mobile-expand { display: flex; align-items: center; justify-content: space-between; width: 100%; padding: 16px 0; font-family: var(--font-display); font-size: 1.15rem; color: var(--ink); background: none; border: 0; text-align: left; cursor: pointer; }
.mobile-expand svg { transition: transform .3s var(--ease); }
.mobile-expand[aria-expanded="true"] svg { transform: rotate(180deg); }
.mobile-sub { padding: 0 0 8px 16px !important; }
.mobile-sub li { border-top: 0 !important; }
.mobile-sub a { font-size: 1rem; color: var(--ink-2); padding: 11px 0; }
@media (max-width: 860px) {
  .nav { display: none; }
  .burger { display: flex; }
  .mobile-nav:not([hidden]) { display: block; }
  .logo { height: 28px; }
}

/* ---------- media sections ---------- */
.media { position: absolute; inset: 0; overflow: hidden; background: var(--ground-2); }
.media img { width: 100%; height: 100%; object-fit: cover; object-position: 60% 50%; background-size: cover; background-position: center; }
.media::after { content: ""; position: absolute; inset: 0; background:
  linear-gradient(to right, rgba(14,17,22,.72) 0%, rgba(14,17,22,.32) 42%, rgba(14,17,22,.04) 100%),
  linear-gradient(to top, rgba(14,17,22,.72) 0%, rgba(14,17,22,0) 34%),
  linear-gradient(to bottom, rgba(14,17,22,.4) 0%, rgba(14,17,22,0) 22%); }
.panel-right .media::after { background:
  linear-gradient(to left, rgba(14,17,22,.72) 0%, rgba(14,17,22,.32) 42%, rgba(14,17,22,.04) 100%),
  linear-gradient(to top, rgba(14,17,22,.72) 0%, rgba(14,17,22,0) 34%),
  linear-gradient(to bottom, rgba(14,17,22,.4) 0%, rgba(14,17,22,0) 22%); }
.panel-closing .media::after, .centred ~ .media::after { background:
  linear-gradient(to top, rgba(14,17,22,.9) 0%, rgba(14,17,22,.35) 60%, rgba(14,17,22,.2) 100%); }
.concept-note { position: absolute; right: var(--gutter); bottom: 14px; margin: 0; font-family: var(--font-mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: rgba(255,255,255,.38); z-index: 2; }

.hero { position: relative; min-height: min(78vh, 760px); display: flex; align-items: flex-end; padding-block: clamp(120px, 18vh, 200px) clamp(56px, 8vh, 96px); isolation: isolate; }
.hero-full { min-height: min(88vh, 900px); }
.hero-content { position: relative; z-index: 1; }
.hero-content > * { max-width: 760px; }
.hero-right .hero-content { display: flex; flex-direction: column; align-items: flex-end; text-align: right; }
.hero-right .hero-content > * { max-width: 680px; }
.hero-right .lead { text-align: right; }
.hero-right .media::after { background:
  linear-gradient(to left, rgba(14,17,22,.74) 0%, rgba(14,17,22,.34) 42%, rgba(14,17,22,.04) 100%),
  linear-gradient(to top, rgba(14,17,22,.72) 0%, rgba(14,17,22,0) 34%),
  linear-gradient(to bottom, rgba(14,17,22,.4) 0%, rgba(14,17,22,0) 22%); }
.hero-right .concept-note { left: var(--gutter); right: auto; }
.hero h1 { margin-bottom: .45em; }
.hero .lead { margin-bottom: 0; }
.hero .eyebrow { margin-bottom: 1.6em; }
.hero-full h1 { font-size: clamp(2.4rem, 6.4vw, 5.4rem); }

.panel { position: relative; min-height: min(84vh, 820px); display: flex; align-items: center; padding-block: clamp(80px, 12vh, 140px); isolation: isolate; }
.panel-content { position: relative; z-index: 1; max-width: 560px; }
.panel-right .panel-content { margin-left: auto; margin-right: 0; }
.panel-right .wrap.panel-content { margin-inline: auto; display: flex; flex-direction: column; align-items: flex-end; text-align: right; max-width: none; }
.panel-right .panel-content > * { max-width: 560px; }
.panel-right .line { text-align: right; }
.panel h2 { font-size: clamp(1.9rem, 4.2vw, 3.6rem); margin-bottom: .5em; }
.line { font-size: clamp(1.02rem, 1.5vw, 1.25rem); color: var(--ink-2); max-width: 40ch; margin-bottom: 1.2rem; }
.panel-text { font-size: .98rem; color: var(--steel); max-width: 46ch; margin-bottom: 1.6rem; }
.panel .eyebrow { color: var(--accent-2); margin-bottom: 1.4em; }
.panel-right .panel-text { text-align: right; }
.panel-closing { min-height: min(80vh, 760px); text-align: center; }
.panel-closing .panel-content { max-width: 820px; margin-inline: auto; }
.panel-closing h2 { font-size: clamp(2rem, 5vw, 4.4rem); }
.panel-closing .ctas { justify-content: center; }
.panel-closing .concept-note { left: var(--gutter); right: auto; }
@media (max-width: 720px) {
  .media img { object-position: 58% 50%; }
  .media::after, .panel-right .media::after { background:
    linear-gradient(to top, rgba(14,17,22,.92) 0%, rgba(14,17,22,.5) 42%, rgba(14,17,22,.12) 100%); }
  .panel-right .wrap.panel-content, .hero-right .hero-content { align-items: flex-start; text-align: left; }
  .panel-right .panel-text { text-align: left; }
  .hero-right .lead { text-align: left; }
  .hero-right .media::after { background: linear-gradient(to top, rgba(14,17,22,.92) 0%, rgba(14,17,22,.5) 42%, rgba(14,17,22,.12) 100%); }

  .panel-right .line { text-align: left; }
  .panel, .hero { align-items: flex-end; }
  .hero { min-height: 82vh; }
  .hero-full { min-height: 86vh; }
  .concept-note { bottom: 10px; font-size: .62rem; }
}

/* ambient movement — slow, subtle; off when reduced motion */
@media (prefers-reduced-motion: no-preference) {
  .js .hero .media img { animation: drift 26s var(--ease) both; }
  .js .panel .media img { transform: scale(1.06); transition: transform 3.5s var(--ease); }
  .js .panel.in .media img { transform: scale(1.0); }
  .js .reveal > .wrap { opacity: .001; transform: translateY(18px); transition: opacity 1.1s var(--ease), transform 1.1s var(--ease); }
  .js .reveal.in > .wrap, .js .reveal:not(.pending) > .wrap { opacity: 1; transform: none; }
  .js .cap-row.reveal { opacity: .001; transform: translateY(18px); transition: opacity 1.1s var(--ease), transform 1.1s var(--ease); }
  .js .cap-row.reveal.in, .js .cap-row.reveal:not(.pending) { opacity: 1; transform: none; }
}
@keyframes drift { from { transform: scale(1.07) translateX(1.2%); } to { transform: scale(1.0) translateX(0); } }

/* ---------- text sections ---------- */
.intro { padding-block: clamp(72px, 10vh, 120px); background: var(--ground); border-bottom: 1px solid var(--line); }
.intro-text { font-size: clamp(1.15rem, 2vw, 1.55rem); line-height: 1.45; font-weight: 300; color: var(--ink); max-width: 46ch; margin: 0; }
.text { padding-block: clamp(72px, 10vh, 120px); }
.text + .text { border-top: 1px solid var(--line); }
.text p { max-width: 66ch; color: var(--ink-2); }
.text h2 { margin-bottom: .7em; }
.split { padding-block: clamp(56px, 8vh, 96px); background: var(--ground-3); border-block: 1px solid var(--line); }
.split-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.split-note p { color: var(--steel); max-width: 44ch; font-size: 1rem; }
@media (max-width: 760px) { .split-grid { grid-template-columns: 1fr; gap: 24px; } }
.row-list { list-style: none; margin: 0; padding: 0; }
.row-list li { padding: 14px 0; border-top: 1px solid var(--line); font-family: var(--font-display); font-weight: 400; font-size: 1.15rem; color: var(--ink); }
.row-list li:last-child { border-bottom: 1px solid var(--line); }
.rows { margin-top: 1.2rem; }
.rows .eyebrow { margin-bottom: 1em; }
.approach { margin: 1.6rem 0 0; display: grid; gap: 0; }
.approach-item { display: grid; grid-template-columns: minmax(0, 18ch) minmax(0, 1fr); gap: 24px; padding: 22px 0; border-top: 1px solid var(--line); }
.approach-item:last-child { border-bottom: 1px solid var(--line); }
.approach dt { font-family: var(--font-display); font-weight: 500; color: var(--ink); font-size: 1.05rem; line-height: 1.3; }
.approach dd { margin: 0; color: var(--ink-2); max-width: 56ch; }
@media (max-width: 640px) { .approach-item { grid-template-columns: 1fr; gap: 6px; } }
.subarea { padding-block: clamp(64px, 9vh, 110px); background: var(--ground-2); border-block: 1px solid var(--line); }
.subarea p { color: var(--ink-2); max-width: 66ch; }
.disclosure { padding-block: 34px; }
.disclosure p { margin: 0; font-size: .92rem; color: var(--steel); max-width: 72ch; border-left: 2px solid var(--accent); padding-left: 16px; }
.cta-band { padding-block: clamp(80px, 12vh, 140px); background: linear-gradient(180deg, var(--ground) 0%, var(--ground-2) 100%); border-top: 1px solid var(--line); }
.cta-band p { color: var(--ink-2); max-width: 56ch; }
.next { border-top: 1px solid var(--line); padding-block: 44px; background: var(--ground-2); }
.next-link { font-family: var(--font-display); font-size: clamp(1.4rem, 3vw, 2.2rem); font-weight: 500; color: var(--ink); }
.next-link:hover { color: var(--accent-2); }

/* ---------- process (R&D) ---------- */
.process { padding-block: clamp(72px, 10vh, 120px); background: var(--ground-3); border-block: 1px solid var(--line); }
.process-list { list-style: none; margin: 2.4rem 0 1.6rem; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line-2); }
.process-list li { padding: 20px 20px 26px 0; border-bottom: 1px solid var(--line); display: flex; flex-direction: column; gap: 10px; position: relative; }
.process-list li::after { content: "→"; position: absolute; right: 12px; top: 20px; color: var(--steel-2); font-family: var(--font-mono); }
.process-list li:last-child::after { content: "↻"; }
.step-n { font-family: var(--font-mono); font-size: .78rem; color: var(--steel); letter-spacing: .1em; }
.step-name { font-family: var(--font-display); font-weight: 500; font-size: 1.15rem; color: var(--ink); }
.process-note { color: var(--ink-2); }
@media (max-width: 900px) { .process-list { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 480px) { .process-list { grid-template-columns: 1fr; } .process-list li::after { top: 18px; } }

/* ---------- capabilities index ---------- */
.cap-index { border-top: 1px solid var(--line); }
.cap-row { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 64px); align-items: center; width: min(100% - 2 * var(--gutter), var(--wrap)); margin-inline: auto; padding-block: clamp(36px, 5vh, 56px); border-bottom: 1px solid var(--line); }
.cap-media { aspect-ratio: 16 / 9; overflow: hidden; background: var(--ground-2); max-width: 100%; }
.cap-media img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.02); transition: transform 2.2s var(--ease); background-size: cover; }
.cap-row:hover .cap-media img { transform: scale(1.06); }
.cap-text h2 { font-size: clamp(1.5rem, 2.8vw, 2.3rem); transition: color .3s var(--ease); }
.cap-row:hover .cap-text h2 { color: var(--accent-2); }
.cap-text p { color: var(--ink-2); max-width: 46ch; }
@media (max-width: 760px) { .cap-row { grid-template-columns: 1fr; gap: 18px; } }

/* ---------- contact ---------- */
.contact { padding-block: clamp(64px, 9vh, 110px); }
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: clamp(36px, 6vw, 100px); align-items: start; }
.contact-aside p { color: var(--ink-2); max-width: 40ch; }
.contact-details { margin-top: 2.4rem; padding-top: 1.6rem; border-top: 1px solid var(--line); }
.contact-details p { color: var(--ink-2); }
@media (max-width: 800px) { .contact-grid { grid-template-columns: 1fr; } }
.enquiry { display: grid; gap: 22px; }
.enquiry .btn { justify-self: start; }
.field { display: grid; gap: 8px; }
.field label { font-family: var(--font-display); font-weight: 500; font-size: .95rem; }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; font-weight: 400; color: var(--ink); background: #12171f; border: 1px solid var(--line-2); border-radius: 2px; padding: .8em .9em;
  transition: border-color .3s var(--ease);
}
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible { outline: 2px solid var(--focus); outline-offset: 1px; border-color: var(--focus); }
.field select { appearance: none; -webkit-appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%239aa3ae' stroke-width='1.5'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 40px; }
.field textarea { resize: vertical; min-height: 150px; }
.field input[aria-invalid="true"], .field select[aria-invalid="true"], .field textarea[aria-invalid="true"] { border-color: #d98a7a; }
.hint { font-size: .85rem; color: var(--steel); margin: 0; }
.field-error { font-size: .85rem; color: #e6a598; margin: 0; }
.field-consent { grid-template-columns: auto 1fr; align-items: start; gap: 12px; }
.field-consent input { width: 18px; height: 18px; margin-top: 3px; accent-color: var(--accent); }
.field-consent label { font-weight: 400; color: var(--ink-2); font-family: var(--font-body); }
.hp { position: absolute; left: -10000px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.form-status { margin: 0; min-height: 1.4em; color: var(--ink-2); }
.form-status.error { color: #e6a598; }
.form-status.ok { color: #9fd3a8; }
.form-status a { text-decoration: underline; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: #0b0e12; padding-block: clamp(48px, 7vh, 80px) 32px; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.4fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 80px); padding-bottom: 40px; border-bottom: 1px solid var(--line); }
.footer-tag { margin-top: 1rem; color: var(--steel); font-family: var(--font-display); }
.footer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.footer-nav ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer-nav a { color: var(--ink-2); font-size: .95rem; }
.footer-nav a:hover { color: var(--ink); }
.footer-contact p { margin: 0 0 .5em; color: var(--ink-2); }
.footer-contact a { border-bottom: 1px solid var(--line-2); }
.footer-base { padding-top: 26px; display: grid; gap: 8px; }
.dev-statement { font-size: .88rem; color: var(--steel); max-width: 78ch; margin: 0; }
@media (max-width: 820px) { .footer-grid { grid-template-columns: 1fr; gap: 32px; } .footer-nav { grid-template-columns: 1fr 1fr; } }

/* preview build only */
.preview-bar { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .04em; color: var(--steel); background: #0b0e12; border-bottom: 1px solid var(--line); padding: 8px var(--gutter); }
.page[hidden] { display: none; }

/* =====================================================================
   Cinematic layer (12 Oct 2026) — quieter, larger, emptier.
   Graphite ground kept; rules, tints and borders removed; light type.
   ===================================================================== */
:root { --header-h: 76px; }
body { font-weight: 300; }
h1, h2, h3 { font-weight: 300; letter-spacing: -.02em; line-height: 1.05; }
h1 { font-size: clamp(2.4rem, 6vw, 5.2rem); }
h2 { font-size: clamp(2rem, 4.2vw, 3.6rem); }
.dim { color: var(--steel); }
.eyebrow { font-size: .7rem; letter-spacing: .16em; color: var(--steel-2); margin-bottom: 1.6em; }
.lead { font-weight: 300; color: var(--ink-2); }
.wrap { --wrap: 1360px; }

/* header: logo, two links, menu button — everywhere */
.site-header { background: linear-gradient(to bottom, rgba(14,17,22,.85), rgba(14,17,22,0)); backdrop-filter: none; -webkit-backdrop-filter: none; border-bottom: 0; position: fixed; left: 0; right: 0; }
.site-header.scrolled { background: rgba(14,17,22,.86); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
.nav { display: block; }
.nav-list > li { display: none; }
.nav-list > li.nav-home, .nav-list > li.has-menu, .nav-list > li.nav-contact { display: flex; }
.nav-list a { font-weight: 300; font-size: .95rem; letter-spacing: .01em; }
.nav-list a[aria-current="page"] { border-bottom-color: transparent; color: var(--ink); }
.burger { display: flex; }
.mobile-nav { position: absolute; left: 0; right: 0; top: 100%; border-top: 0; background: rgba(14,17,22,.96); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
.mobile-nav:not([hidden]) { display: block; }
.mobile-nav ul { width: min(100% - 2 * var(--gutter), var(--wrap)); margin-inline: auto; padding: 18px 0 34px; }
.mobile-nav li + li { border-top: 1px solid rgba(255,255,255,.07); }
.mobile-nav a, .mobile-expand { font-weight: 300; font-size: 1.3rem; padding: 18px 0; }
.mobile-sub a { font-size: 1rem; color: var(--steel); padding: 10px 0; }
@media (max-width: 860px) { .nav { display: none; } }
main > :first-child { padding-top: 0; }

/* media sections: images carry the page */
.media::after, .panel-right .media::after, .hero-right .media::after, .panel-closing .media::after {
  background: linear-gradient(to top, rgba(14,17,22,.82) 0%, rgba(14,17,22,.28) 40%, rgba(14,17,22,0) 70%),
              linear-gradient(to bottom, rgba(14,17,22,.55) 0%, rgba(14,17,22,0) 26%); }
.hero { min-height: 100svh; align-items: flex-end; padding-block: 160px clamp(64px, 10vh, 120px); }
.hero-full { min-height: 100svh; }
.hero-content > * { max-width: 820px; }
.hero-full h1 { font-size: clamp(2.6rem, 7vw, 6.2rem); }
.hero .lead { font-size: clamp(1.05rem, 1.5vw, 1.3rem); }
.hero .ctas .btn { font-weight: 400; }
.btn { border-radius: 999px; padding: .85em 1.6em; font-weight: 400; }
.btn-primary { background: var(--ink); }
.btn-ghost { background: transparent; border-color: rgba(255,255,255,.28); backdrop-filter: none; }
.link { font-weight: 300; border-bottom-color: rgba(255,255,255,.3); }
.concept-note { color: rgba(255,255,255,.26); font-size: .62rem; }

.panel { min-height: 100svh; padding-block: clamp(96px, 14vh, 180px); }
.panel h2 { font-size: clamp(2.2rem, 4.8vw, 4.2rem); margin-bottom: .45em; }
.panel .eyebrow { color: var(--steel-2); }
.line { font-weight: 300; }
.panel-text { color: var(--steel); }
.panel-closing h2 { font-size: clamp(2.2rem, 5.4vw, 5rem); }

/* intro: two-tone statement */
.intro { padding-block: clamp(120px, 18vh, 220px); border-bottom: 0; }
.intro-text { font-size: clamp(1.5rem, 3vw, 2.6rem); line-height: 1.25; max-width: 30ch; font-weight: 300; }
.intro-text .dim { color: var(--steel); }

/* pinned capabilities (home) */
.pinned { position: relative; height: 480svh; }
.pinned-stage { position: sticky; top: 0; height: 100svh; overflow: hidden; display: flex; align-items: flex-end; isolation: isolate; }
.pinned-media { position: absolute; inset: 0; background: var(--ground); }
.pinned-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 1.4s var(--ease), transform 6s linear; transform: scale(1.04); }
.pinned-media img.active { opacity: 1; transform: scale(1.0); }
.pinned-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(14,17,22,.9) 0%, rgba(14,17,22,.45) 45%, rgba(14,17,22,.05) 80%); }
.pinned-content { position: relative; z-index: 1; padding-bottom: clamp(48px, 8vh, 96px); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(32px, 6vw, 120px); align-items: end; }
.pinned-content h2 { font-size: clamp(2rem, 4vw, 3.6rem); margin: 0; }
.pinned-list { list-style: none; margin: 0; padding: 0; }
.pinned-list li { display: grid; grid-template-columns: 3ch minmax(0, 1fr); gap: 18px; padding: 16px 0; border-top: 1px solid rgba(255,255,255,.08); transition: opacity .6s var(--ease); opacity: .32; }
.pinned-list li.active { opacity: 1; }
.pinned-list li:first-child { border-top: 0; }
.pinned-list .n { font-family: var(--font-mono); font-size: .72rem; color: var(--steel); padding-top: .45em; letter-spacing: .1em; }
.pinned-list a { display: block; }
.pinned-list .name { display: block; font-family: var(--font-display); font-weight: 400; font-size: clamp(1.1rem, 1.7vw, 1.45rem); color: var(--ink); }
.pinned-list .sub { display: block; color: var(--ink-2); font-size: .95rem; max-width: 46ch; margin-top: 4px; max-height: 0; overflow: hidden; opacity: 0; transition: max-height .7s var(--ease), opacity .7s var(--ease); }
.pinned-list li.active .sub { max-height: 12em; opacity: 1; }
.pinned-list .go { display: block; margin-top: 10px; font-size: .85rem; color: var(--accent-2); }
@media (max-width: 860px) {
  .pinned { height: 440svh; }
  .pinned-content { grid-template-columns: 1fr; gap: 20px; padding-bottom: 36px; }
  .pinned-content h2 { font-size: 1.7rem; }
  .pinned-list li { padding: 11px 0; }
  .pinned-list .sub { font-size: .88rem; }
}
@media (prefers-reduced-motion: reduce) {
  .pinned { height: auto; }
  .pinned-stage { position: relative; height: auto; min-height: 100svh; }
  .pinned-list li, .pinned-list .sub { opacity: 1; max-height: none; }
}

/* text sections: more air, no rules */
.text { padding-block: clamp(110px, 16vh, 200px); }
.text + .text { border-top: 0; }
.text h2 { margin-bottom: .8em; }
.text p, .subarea p { font-size: clamp(1rem, 1.25vw, 1.15rem); line-height: 1.65; }
.split { background: transparent; border-block: 0; padding-block: clamp(80px, 12vh, 160px); }
.row-list li { border: 0 !important; padding: 10px 0; font-weight: 300; font-size: clamp(1.25rem, 2vw, 1.7rem); color: var(--ink); }
.approach { margin-top: 2.4rem; gap: 0; }
.approach-item { border: 0 !important; padding: 20px 0; grid-template-columns: minmax(0, 22ch) minmax(0, 1fr); }
.approach dt { font-weight: 400; font-size: 1.1rem; }
.subarea { background: transparent; border-block: 0; padding-block: clamp(100px, 14vh, 180px); }
.disclosure { padding-block: 10px 80px; }
.disclosure p { border-left: 0; padding-left: 0; color: var(--steel-2); font-size: .85rem; }
.cta-band { background: transparent; border-top: 0; padding-block: clamp(140px, 22vh, 260px); text-align: center; }
.cta-band .wrap { max-width: 56ch; margin-inline: auto; }
.cta-band h2 { font-size: clamp(2rem, 4.6vw, 4rem); }
.cta-band p { margin-inline: auto; }
.cta-band .ctas { justify-content: center; }
.next { background: transparent; border-top: 1px solid rgba(255,255,255,.07); padding-block: 48px 72px; }
.next-link { font-weight: 300; }
.process { background: transparent; border-block: 0; padding-block: clamp(110px, 16vh, 200px); }
.process-list { border-top: 0; margin-top: 3rem; }
.process-list li { border-bottom: 0; }
.step-name { font-weight: 300; font-size: clamp(1.2rem, 1.8vw, 1.6rem); }
.cap-index { border-top: 0; }
.cap-row { border-bottom: 0; padding-block: clamp(40px, 7vh, 90px); }
.cap-text h2 { font-weight: 300; }
.contact { padding-block: clamp(100px, 14vh, 180px); }
.contact-details { border-top: 0; }
.field input, .field select, .field textarea { background: transparent; border: 0; border-bottom: 1px solid rgba(255,255,255,.22); border-radius: 0; padding: .7em 0; }
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible { outline: none; border-bottom-color: var(--accent-2); }
.field label { font-weight: 300; color: var(--steel); font-size: .85rem; letter-spacing: .04em; }
.site-footer { background: var(--ground); border-top: 1px solid rgba(255,255,255,.07); padding-block: clamp(72px, 10vh, 120px) 40px; }
.footer-grid { border-bottom: 0; }
.footer-base { border-top: 1px solid rgba(255,255,255,.07); }
.footer-nav a { font-weight: 300; }

/* =====================================================================
   Motion layer (15 Oct 2026) — scroll-driven, restrained, fully off under reduced motion.
   ===================================================================== */
/* hover: nav underline grows, buttons get a light sweep, links shift underline to accent */
.nav-list a { position: relative; border-bottom: 0; }
.nav-list a::after { content: ""; position: absolute; left: 0; right: 0; bottom: .25em; height: 1px; background: var(--ink); transform: scaleX(0); transform-origin: left; transition: transform .5s var(--ease); }
.nav-list a:hover::after, .nav-list a:focus-visible::after { transform: scaleX(1); }
.btn { position: relative; overflow: hidden; }
.btn::after { content: ""; position: absolute; inset: 0; pointer-events: none; transform: translateX(-130%) skewX(-18deg); transition: transform .9s var(--ease);
  background: linear-gradient(100deg, transparent 32%, rgba(255,255,255,.22) 50%, transparent 68%); }
.btn-primary::after { background: linear-gradient(100deg, transparent 32%, rgba(14,17,22,.12) 50%, transparent 68%); }
.btn:hover::after, .btn:focus-visible::after { transform: translateX(130%) skewX(-18deg); }
.link { border-bottom: 0; padding-bottom: .2em;
  background: linear-gradient(var(--accent-2), var(--accent-2)) no-repeat left bottom / 0 1px, linear-gradient(rgba(255,255,255,.3), rgba(255,255,255,.3)) no-repeat left bottom / 100% 1px;
  transition: background-size .6s var(--ease), color .3s var(--ease); }
.link:hover, .link:focus-visible { background-size: 100% 1px, 100% 1px; }
.pinned-list a .name { transition: color .4s var(--ease), transform .6s var(--ease); display: inline-block; }
.pinned-list a:hover .name { color: var(--accent-2); transform: translateX(4px); }
.next-link { display: inline-block; transition: color .4s var(--ease), transform .6s var(--ease); }
.next-link:hover { transform: translateX(8px); }

/* hero: ambient light loop (video inserted by JS on capable desktops only) */
.hero-loop { position: absolute; inset: 0; opacity: 0; transition: opacity 2.5s var(--ease); mix-blend-mode: screen; pointer-events: none; }
.hero-loop.on { opacity: .8; }
.hero-loop video { width: 100%; height: 100%; object-fit: cover; display: block; }

/* schematics (inner pages): line drawings that draw themselves in */
.schematic { padding-block: clamp(40px, 6vh, 90px) clamp(90px, 13vh, 170px); }
.schem-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 110px); align-items: center; }
.schem-fig { margin: 0; color: var(--ink-2); }
.schem { width: 100%; height: auto; display: block; }
.schem .lbl { font-family: var(--font-mono); font-size: 12px; letter-spacing: .12em; fill: var(--steel-2); stroke: none; }
.schem .lbl.big { font-family: var(--font-display); font-weight: 300; font-size: 21px; letter-spacing: 0; fill: var(--ink); }
.schem .edge, .schem .node { stroke: var(--ink); }
.schem .vec, .schem .dir { stroke: var(--accent-2); }
.schem .ref, .schem .grid, .schem .tick, .schem .spar { stroke: var(--steel-2); }
.schem .ray { stroke: var(--steel); }
.concept-note.static { position: static; margin-top: 12px; }
.schem-text h2 { font-size: clamp(1.8rem, 3.4vw, 2.8rem); }
.schem-text p { color: var(--ink-2); max-width: 44ch; }
@media (max-width: 860px) { .schem-grid { grid-template-columns: 1fr; gap: 28px; } .schem-text { order: -1; } }

/* home: interactive laminate (three.js, loaded only when the section approaches) */
.lab { position: relative; height: 260svh; }
.lab-stage { position: sticky; top: 0; height: 100svh; overflow: hidden; display: flex; align-items: flex-end; isolation: isolate; background: var(--ground); }
.lab-canvas { position: absolute; inset: 0; }
.lab-canvas canvas { position: absolute; inset: 0; width: 100% !important; height: 100% !important; display: block; }
.lab-fallback { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .5; transition: opacity 1.4s var(--ease); }
.lab-canvas.ready .lab-fallback { opacity: 0; }
.lab-canvas::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(to top, rgba(14,17,22,.88) 0%, rgba(14,17,22,.2) 40%, rgba(14,17,22,0) 65%); }
.lab-content { position: relative; z-index: 1; padding-bottom: clamp(48px, 8vh, 96px); }
.lab-content > * { max-width: 620px; }
.lab-content h2 { font-size: clamp(2rem, 4.2vw, 3.8rem); margin-bottom: .45em; }
@media (max-width: 860px) { .lab { height: 220svh; } }
@media (prefers-reduced-motion: reduce) { .lab { height: auto; } .lab-stage { position: relative; min-height: 100svh; } }

@media (prefers-reduced-motion: no-preference) {
  /* hero: words rise through a mask on load; media parallaxes and darkens on scroll */
  .js .hero { overflow: hidden; }
  .js .hero .media { transform: translateY(calc(var(--sp, 0) * 16vh)); will-change: transform; }
  .js .hero .media::before { content: ""; position: absolute; inset: 0; z-index: 1; background: var(--ground); opacity: calc(var(--sp, 0) * .9); pointer-events: none; }
  .js .hero .hero-content { transform: translateY(calc(var(--sp, 0) * -7vh)); opacity: calc(1 - var(--sp, 0) * 1.4); }
  .js .hero h1 .w { display: inline-block; overflow: hidden; vertical-align: bottom; padding-bottom: .1em; margin-bottom: -.1em; }
  .js .hero h1 .w > span { display: inline-block; transform: translateY(112%); }
  .js .hero.play h1 .w > span { animation: rise 1.2s var(--ease) forwards; animation-delay: calc(.2s + var(--i, 0) * .07s); }
  .js .hero .eyebrow, .js .hero .lead, .js .hero .ctas { opacity: 0; }
  .js .hero.play .eyebrow { animation: fade-up 1s var(--ease) .1s forwards; }
  .js .hero.play .lead { animation: fade-up 1.2s var(--ease) 1s forwards; }
  .js .hero.play .ctas { animation: fade-up 1.2s var(--ease) 1.25s forwards; }
  .js .hero.play .media img { animation: drift 26s var(--ease) both, fade-in 1.6s var(--ease) both; }

  /* reveals: children stagger instead of the block moving as one; headings slide through a mask */
  .js .reveal > .wrap { opacity: 1; transform: none; transition: none; }
  .js .reveal > .wrap > * { transition: opacity 1.1s var(--ease), transform 1.1s var(--ease); transition-delay: calc(var(--i, 0) * 110ms); }
  .js .reveal.pending > .wrap > * { opacity: 0; transform: translateY(26px); }
  .js .reveal .mask { display: block; overflow: hidden; padding-bottom: .14em; margin-bottom: -.14em; }
  .js .reveal .mask-in { display: block; transition: transform 1.2s var(--ease); transition-delay: calc(var(--i, 0) * 110ms + 60ms); }
  .js .reveal.pending .mask-in { transform: translateY(110%); }

  /* intro: words light up as the visitor reads down */
  .js .intro-text .wd { color: var(--steel-2); transition: color .6s var(--ease); }
  .js .intro-text .wd.lit { color: var(--ink); }

  /* pinned: progress line above the list, slow push-in on the active frame */
  .pinned-list { position: relative; padding-top: 1px; }
  .pinned-list::before, .pinned-list::after { content: ""; position: absolute; left: 0; top: 0; height: 1px; width: 100%; background: rgba(255,255,255,.12); }
  .pinned-list::after { background: var(--accent-2); transform: scaleX(var(--pp, 0)); transform-origin: left; transition: transform .25s linear; }
  .pinned-media img.active { animation: push 9s linear forwards; }

  /* schematics draw on */
  .js .schem [pathLength] { stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke-dashoffset 1.6s var(--ease); transition-delay: min(calc(var(--i, 0) * 40ms), 2s); }
  .js .reveal.in .schem [pathLength] { stroke-dashoffset: 0; }
  .js .schem .lbl { opacity: 0; transition: opacity 1s var(--ease) 1.4s; }
  .js .reveal.in .schem .lbl { opacity: 1; }
}
@keyframes rise { to { transform: translateY(0); } }
@keyframes fade-up { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes push { from { transform: scale(1.04) translateX(0); } to { transform: scale(1.11) translateX(-.8%); } }
.lab .concept-note { max-width: 70%; text-align: right; }
.schem [pathLength] { vector-effect: non-scaling-stroke; }
.subarea .lead { margin-bottom: 1.4em; }
.subarea-detail { padding-top: 0 !important; }
.subarea-detail h2 { font-size: clamp(1.5rem, 2.6vw, 2.2rem); }
.small-note { font-size: .85rem; color: var(--steel-2); margin-top: 1.6rem; }
.split-note .link { margin-top: .4rem; }