/* 云翔无人机 · 碳纤维经纬 */

@font-face {
  font-family: "HanSerif";
  src: url("../assets/fonts/han-serif-heavy.woff2") format("woff2");
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Harmony";
  src: url("../assets/fonts/harmony-regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Harmony";
  src: url("../assets/fonts/harmony-bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Data";
  src: url("../assets/fonts/jetbrains-mono.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --carbon: #0b0b0c;
  --carbon-2: #141416;
  --carbon-3: #1c1d20;
  --paper: #f2efe8;
  --paper-2: #e7e3d9;
  --ink: #f4f2ec;
  --ink-dim: #a9a49b;
  --graphite: #232427;
  --graphite-dim: #5b5a56;
  --signal: #e8500f;
  --signal-soft: #f4732f;
  --signal-ink: #b83d06;
  --hair-dark: rgba(244, 242, 236, .14);
  --hair-light: rgba(35, 36, 39, .16);

  --serif: "HanSerif", "Source Han Serif SC", "Songti SC", serif;
  --sans: "Harmony", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --data: "Data", ui-monospace, "Consolas", "Harmony", monospace;

  --gutter: clamp(20px, 4.6vw, 64px);
  --rail: min(1440px, 100% - var(--gutter) * 2);
  --col: calc(var(--rail) / 12);
  --ease: cubic-bezier(.16, 1, .3, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--carbon);
  color: var(--ink);
  font-family: var(--sans);
  font-size: clamp(15px, .52vw + 13.4px, 17px);
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
h1, h2, h3, p, dl, dd, ol, ul, figure { margin: 0; }
ol, ul { list-style: none; padding: 0; }

::selection { background: var(--signal); color: #fff; }
body { caret-color: var(--signal); }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }

* { scrollbar-width: thin; scrollbar-color: #3a3a3d var(--carbon); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--carbon); }
::-webkit-scrollbar-thumb { background: #35353a; border: 3px solid var(--carbon); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: #4a4a50; }

.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;
}
.skip {
  position: fixed; top: 12px; left: -9999px; z-index: 200;
  padding: 10px 16px; background: var(--ink); color: var(--carbon);
}
.skip:focus-visible { left: 12px; }

.wrap { width: var(--rail); margin-inline: auto; }

.mono {
  font-family: var(--data);
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
}

/* ---------- type scale ---------- */

.h2 {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(2.1rem, 1.15rem + 3.5vw, 4.15rem);
  line-height: 1.07;
  letter-spacing: -.02em;
  text-wrap: balance;
}
.h2--wide { font-size: clamp(2.1rem, 1rem + 4vw, 4.6rem); }
.h3 {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(1.5rem, 1.1rem + 1.5vw, 2.35rem);
  line-height: 1.2;
  letter-spacing: -.015em;
}
.body-lg {
  font-size: clamp(1rem, .9rem + .38vw, 1.1875rem);
  line-height: 1.78;
  color: var(--ink-dim);
  max-width: 30em;
}

/* ---------- buttons ---------- */

.btn {
  --btn-bg: transparent;
  display: inline-flex; align-items: center; gap: .6em;
  padding: .95em 1.65em;
  border: 1px solid transparent;
  border-radius: 0;
  font-size: .9375rem;
  font-weight: 700;
  letter-spacing: .02em;
  cursor: pointer;
  transition: background-color .25s var(--ease), color .25s var(--ease),
              border-color .25s var(--ease), transform .25s var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn--signal { background: var(--signal); color: var(--carbon); }
.btn--signal:hover { color: var(--carbon); }
.btn--signal:hover { background: var(--signal-soft); }
.btn--line { border-color: var(--hair-dark); color: var(--ink); }
.btn--line:hover { border-color: var(--ink); background: rgba(244, 242, 236, .06); }
.btn--ghost { border-color: var(--hair-dark); color: var(--ink); padding: .6em 1.1em; font-size: .8125rem; }
.btn--ghost:hover { border-color: var(--signal); color: var(--signal-soft); }
.btn[disabled] { cursor: not-allowed; opacity: .45; }

/* ---------- topbar ---------- */

.topbar {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background-color .4s var(--ease), border-color .4s var(--ease);
}
.topbar.is-solid {
  background: rgba(11, 11, 12, .88);
  backdrop-filter: blur(14px) saturate(120%);
  border-bottom-color: var(--hair-dark);
}
.topbar__inner {
  display: flex; align-items: center; gap: clamp(18px, 3vw, 48px);
  height: 76px;
}
.brand { display: flex; align-items: center; gap: 12px; margin-right: auto; }
.brand__mark { width: 34px; transition: transform .3s var(--ease); }
.brand:hover .brand__mark { transform: translateX(3px); }
.brand__name { display: flex; flex-direction: column; line-height: 1.15; }
.brand__cn { font-family: var(--serif); font-weight: 900; font-size: 1.0625rem; letter-spacing: .04em; }
.brand__en {
  font-family: var(--data); font-size: .6875rem; letter-spacing: .18em;
  color: var(--ink-dim); text-transform: uppercase;
}
.nav { display: flex; gap: clamp(14px, 1.8vw, 30px); }
.nav a {
  position: relative; font-size: .875rem; color: var(--ink-dim);
  padding-block: 6px; transition: color .2s var(--ease);
}
.nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav a:hover, .nav a.is-current { color: var(--ink); }
.nav a:hover::after, .nav a.is-current::after { transform: scaleX(1); }

.menu-btn { display: none; }

.mobile-menu {
  display: none; padding: 8px var(--gutter) 28px;
  border-top: 1px solid var(--hair-dark);
  border-bottom: 1px solid var(--hair-dark);
  background: var(--carbon);
  box-shadow: 0 24px 40px rgba(0, 0, 0, .45);
}
.mobile-menu a { display: block; padding: 14px 0; border-bottom: 1px solid var(--hair-dark); font-size: 1rem; }

/* ---------- hero ---------- */

.hero {
  position: relative; min-height: 100svh;
  display: grid; grid-template-rows: 1fr auto;
  align-items: end; overflow: hidden;
  background: var(--carbon);
}
.hero__media { position: absolute; inset: -8% 0 0; will-change: transform; }
.hero__media img {
  width: 100%; height: 100%; object-fit: cover; object-position: 62% 42%;
  filter: brightness(.62) contrast(1.12) saturate(.72);
  animation: heroDrift 26s var(--ease) both;
}
@keyframes heroDrift {
  from { transform: scale(1.1); }
  to { transform: scale(1); }
}
.hero__veil {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(11, 11, 12, .82) 0%, rgba(11, 11, 12, .18) 34%, rgba(11, 11, 12, .55) 68%, var(--carbon) 100%),
    linear-gradient(90deg, rgba(11, 11, 12, .74) 0%, rgba(11, 11, 12, .12) 52%, rgba(11, 11, 12, 0) 78%);
}
.hero__inner { position: relative; padding-block: 140px 0; }
.hero__title {
  font-family: var(--serif); font-weight: 900;
  font-size: clamp(2.5rem, 1rem + 6.4vw, 6.4rem);
  line-height: 1.02; letter-spacing: -.03em;
  margin-bottom: clamp(20px, 2.4vw, 34px);
}
.hero__title span { display: block; overflow: hidden; }
.hero__title span > * { display: block; }
.hero__lead {
  max-width: 34em; color: #ded9d0;
  font-size: clamp(1rem, .9rem + .42vw, 1.1875rem);
  line-height: 1.72;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: clamp(26px, 3vw, 40px); }

/* ---------- 内页页头（about.html 等） ---------- */

.page-head {
  background: var(--carbon); color: var(--ink);
  padding: clamp(120px, 13vw, 190px) 0 clamp(44px, 5vw, 76px);
  border-bottom: 1px solid var(--hair-dark);
}
.page-head .h2 { max-width: 26ch; }
.page-head__lead {
  margin-top: clamp(20px, 2.4vw, 32px);
  max-width: 38em; color: var(--ink-dim);
  font-size: clamp(1rem, .9rem + .4vw, 1.125rem); line-height: 1.8;
}
.page-facts {
  display: flex; flex-wrap: wrap; gap: clamp(24px, 4vw, 64px);
  margin-top: clamp(32px, 4.4vw, 60px); padding-top: 24px;
  border-top: 1px solid var(--hair-dark);
}
.page-facts div { min-width: 116px; }
.page-facts b {
  display: block; font-family: var(--serif); font-weight: 900;
  font-size: clamp(1.6rem, 1.2rem + 1.3vw, 2.4rem); line-height: 1;
  font-variant-numeric: tabular-nums;
}
.page-facts small { font-family: var(--data); font-size: .4375em; font-weight: 400; margin-left: .2em; color: var(--ink-dim); }
.page-facts span { display: block; margin-top: 10px; font-size: .8125rem; color: var(--ink-dim); letter-spacing: .05em; }

.manifest { position: relative; border-top: 1px solid var(--hair-dark); margin-top: clamp(48px, 6vw, 92px); background: rgba(11, 11, 12, .55); backdrop-filter: blur(6px); }
.manifest__row { display: grid; grid-template-columns: repeat(5, 1fr); }
.manifest__cell {
  padding: 20px 22px 24px; border-left: 1px solid var(--hair-dark);
}
.manifest__cell:first-child { border-left: 0; padding-left: 0; }
.manifest__cell b {
  display: block; font-family: var(--serif); font-weight: 900;
  font-size: clamp(1.5rem, 1.1rem + 1.3vw, 2.35rem); line-height: 1;
  font-variant-numeric: tabular-nums;
}
.manifest__cell small { font-family: var(--data); font-size: .8125rem; font-weight: 400; margin-left: .2em; color: var(--ink-dim); }
.manifest__cell span {
  display: block; margin-top: 10px; font-size: .8125rem; color: var(--ink-dim);
  letter-spacing: .06em;
}

/* ---------- section furniture ---------- */

.tech, .factory, .scenes, .contact { background: var(--paper); color: var(--graphite); }
.products, .proof, .team { background: var(--carbon); }

.tech, .products, .proof, .factory, .team, .contact, .scenes { padding-block: clamp(72px, 8vw, 140px); }

.sec-head { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: clamp(24px, 4vw, 72px); align-items: end; }
.sec-head__lead { font-size: clamp(.98rem, .9rem + .3vw, 1.125rem); line-height: 1.8; color: var(--ink-dim); max-width: 32em; }
.sec-head--narrow { grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); }

.tech .sec-head__lead, .factory .sec-head__lead, .scenes .sec-head__lead, .contact .sec-head__lead { color: var(--graphite-dim); }

/* ---------- tech ---------- */

.tech__grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(32px, 6vw, 96px); }
.tech__aside { max-width: 30rem; }
.tech__aside .h2 { margin-bottom: clamp(22px, 2.4vw, 34px); }
.tech__aside .body-lg { color: var(--graphite-dim); }
.kvc { display: flex; flex-wrap: wrap; gap: clamp(18px, 2.6vw, 44px); margin-top: clamp(30px, 3.4vw, 52px); padding-top: 22px; border-top: 1px solid var(--hair-light); }
.kvc li { display: flex; flex-direction: column; gap: 8px; }
.kvc span { font-size: .8125rem; color: var(--graphite-dim); letter-spacing: .04em; }
.kvc b { font-family: var(--serif); font-weight: 900; font-size: clamp(1.35rem, 1rem + 1.1vw, 1.95rem); line-height: 1; font-variant-numeric: tabular-nums; }
.kvc small { font-family: var(--data); font-size: .75rem; margin-left: .15em; color: var(--graphite-dim); font-weight: 400; }
.kvc em { font-style: normal; }

.claims li { padding-block: clamp(22px, 2.6vw, 36px); border-top: 1px solid var(--hair-light); }
.claims li:last-child { border-bottom: 1px solid var(--hair-light); }
.claims h3 {
  font-family: var(--serif); font-weight: 900; font-size: clamp(1.25rem, 1rem + .8vw, 1.6rem);
  letter-spacing: -.01em; margin-bottom: .6em;
}
.claims p { color: var(--graphite-dim); max-width: 40em; }
.claim__meta {
  margin-top: 1em; font-family: var(--data); font-size: .75rem;
  letter-spacing: .04em; color: var(--signal-ink) !important;
}

/* ---------- products ---------- */

.products { position: relative; isolation: isolate; }
.weft {
  position: absolute; inset: 0 auto 0 50%; transform: translateX(-50%);
  width: var(--rail); display: flex; pointer-events: none; z-index: 0;
  mask-image: linear-gradient(180deg, transparent, #000 14%, #000 86%, transparent);
}
.weft i { flex: 1; border-left: 1px solid rgba(244, 242, 236, .06); }
.products > .wrap { position: relative; z-index: 1; }
.products .sec-head { margin-bottom: clamp(36px, 5vw, 72px); }

.matrix { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: clamp(24px, 4vw, 64px); }
.matrix__index { display: flex; flex-direction: column; }
.matrix__tab {
  display: grid; grid-template-columns: 1fr auto; align-items: baseline; gap: 10px;
  padding: 10px 12px 10px 18px; text-align: left; background: none; border: 0;
  border-top: 1px solid var(--hair-dark); cursor: pointer; position: relative;
  transition: background-color .3s var(--ease), padding-left .3s var(--ease);
}
.matrix__tab:last-child { border-bottom: 1px solid var(--hair-dark); }
.matrix__tab::before {
  content: ""; position: absolute; left: 0; top: 50%; width: 6px; height: 6px;
  background: var(--signal); transform: translateY(-50%) scale(0);
  transition: transform .3s var(--ease);
}
.matrix__tab:hover { background: rgba(244, 242, 236, .04); padding-left: 24px; }
.matrix__tab.is-active { background: rgba(244, 242, 236, .06); }
.matrix__tab.is-active::before { transform: translateY(-50%) scale(1); }
.matrix__name { font-size: .9375rem; font-weight: 700; letter-spacing: .02em; color: var(--ink-dim); transition: color .3s var(--ease); }
.matrix__kind { font-size: .6875rem; color: #948f88; letter-spacing: .03em; text-align: right; }
.matrix__tab.is-active .matrix__name { color: var(--ink); }

.matrix__stage { position: relative; min-width: 0; }
.plate {
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  background: var(--carbon-2); border: 1px solid var(--hair-dark);
  animation: plateIn .62s var(--ease) both;
}
.plate[hidden] { display: none; }
@keyframes plateIn {
  from { opacity: 0; clip-path: inset(0 0 0 12%); }
  to { opacity: 1; clip-path: inset(0 0 0 0); }
}
.plate__art {
  position: relative; display: grid; place-items: center;
  padding: clamp(20px, 3vw, 46px);
  background:
    radial-gradient(120% 86% at 50% 42%, #faf8f3 0%, var(--paper) 52%, var(--paper-2) 100%);
  overflow: hidden;
}
.plate__art::before {
  content: ""; position: absolute; left: 13%; right: 13%; bottom: 15%; height: 1px;
  background: rgba(35, 36, 39, .3); pointer-events: none;
}
.plate__art::after {
  content: ""; position: absolute; left: 50%; bottom: 15%; width: 1px; height: 7px;
  background: rgba(35, 36, 39, .3); pointer-events: none;
}
.plate__art img { position: relative; z-index: 1; width: 100%; max-height: 340px; object-fit: contain; filter: drop-shadow(0 22px 26px rgba(20, 20, 22, .22)); }
.plate__art--photo img { max-height: 340px; filter: none; }
.matrix__note {
  margin-top: clamp(20px, 2.4vw, 32px);
  padding-top: 18px; border-top: 1px solid var(--hair-dark);
  font-size: .75rem; line-height: 1.8; color: #948f88; max-width: 62em;
}

.plate__data { padding: clamp(22px, 2.6vw, 38px); border-left: 1px solid var(--hair-dark); display: flex; flex-direction: column; }
.plate__title { font-family: var(--serif); font-weight: 900; font-size: clamp(1.3rem, 1rem + .9vw, 1.75rem); letter-spacing: -.01em; }
.plate__title span { display: block; font-family: var(--sans); font-weight: 400; font-size: .75rem; letter-spacing: .1em; color: var(--ink-dim); margin-top: 8px; }
.plate__note { color: var(--ink-dim); font-size: .9375rem; line-height: 1.72; margin-top: 16px; max-width: 28em; }
.specs { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin-top: auto; padding-top: 22px; }
.specs > div { padding: 11px 0; border-top: 1px solid var(--hair-dark); }
.specs > div:nth-child(even) { padding-left: 16px; }
.specs dt { font-size: .6875rem; letter-spacing: .09em; color: #948f88; }
.specs dd { font-family: var(--data); font-size: 1rem; margin-top: 4px; color: var(--ink); font-variant-numeric: tabular-nums; }
.specs dd small { font-size: .75rem; color: var(--ink-dim); margin-left: .25em; }
.specs dd span { color: var(--ink-dim); font-size: .6875rem; }

/* ---------- scenes ---------- */

.scenes { padding-block: clamp(72px, 8vw, 140px) clamp(40px, 4vw, 64px); }
.scenes .sec-head { margin-bottom: clamp(40px, 5vw, 80px); }
.scene { display: grid; grid-template-columns: 1fr 1fr; align-items: center; border-top: 1px solid var(--hair-light); }
.scene__media {
  position: relative; overflow: hidden;
  justify-self: center; width: -moz-fit-content; width: fit-content; max-width: 100%;
}
.scene__media img { display: block; width: auto; max-width: 100%; height: auto; max-height: min(64vh, 560px); filter: saturate(.88) contrast(1.03); }
.scene__media figcaption {
  position: absolute; left: 0; bottom: 0; padding: 12px 18px;
  background: var(--paper); font-family: var(--data); font-size: .6875rem;
  letter-spacing: .06em; color: var(--graphite-dim);
}
.scene__text { padding: clamp(28px, 5vw, 80px); max-width: 34rem; }
.scene--b .scene__text, .scene--b .scene__media { order: 1; }
.scene--b .scene__media { order: 2; }
.scene__text .h3 { margin-bottom: .7em; }
.scene__text p { color: var(--graphite-dim); }
.scene__list {
  margin-top: 1.4em; font-family: var(--data); font-size: .75rem;
  letter-spacing: .1em; color: var(--graphite) !important; text-transform: uppercase;
}


/* ---------- proof ---------- */

.ledger { margin-top: clamp(36px, 4.4vw, 64px); }
.ledger__row {
  display: grid; grid-template-columns: 150px minmax(0, 1fr) 100px;
  gap: clamp(18px, 3vw, 48px); align-items: start;
  padding-block: clamp(22px, 2.6vw, 34px);
  border-top: 1px solid var(--hair-dark);
  transition: background-color .3s var(--ease);
}
.ledger__row:last-child { border-bottom: 1px solid var(--hair-dark); }
.ledger__row:hover { background: rgba(244, 242, 236, .035); }
.ledger__row time { font-family: var(--data); font-size: .8125rem; letter-spacing: .06em; color: var(--ink-dim); padding-top: .35em; }
.ledger__main h3 { font-family: var(--serif); font-weight: 900; font-size: clamp(1.15rem, 1rem + .55vw, 1.45rem); margin-bottom: .5em; }
.ledger__main p { color: var(--ink-dim); max-width: 46em; }
.ledger__tag {
  justify-self: end; font-family: var(--data); font-size: .6875rem; letter-spacing: .12em;
  color: var(--signal-soft); border: 1px solid rgba(232, 80, 15, .4); padding: 3px 9px;
}

.press { margin-top: clamp(44px, 5vw, 84px); }
.press__title { font-family: var(--serif); font-weight: 900; font-size: 1.25rem; margin-bottom: 18px; }
.press__list li {
  display: grid; grid-template-columns: 110px minmax(0, 1fr) 96px; gap: 20px;
  align-items: baseline; padding-block: 13px; border-top: 1px solid var(--hair-dark);
}
.press__list li:last-child { border-bottom: 1px solid var(--hair-dark); }
.press__list span { font-family: var(--data); font-size: .6875rem; letter-spacing: .1em; color: var(--ink-dim); }
.press__list a { color: var(--ink); font-size: .9375rem; text-decoration: underline; text-decoration-color: transparent; text-underline-offset: 4px; transition: text-decoration-color .25s var(--ease), color .25s var(--ease); }
.press__list a:hover { text-decoration-color: var(--signal); color: var(--signal-soft); }
.press__list time { font-family: var(--data); font-size: .75rem; color: var(--ink-dim); justify-self: end; }

/* ---------- factory ---------- */

.mosaic {
  display: grid; grid-template-columns: repeat(12, 1fr); gap: clamp(10px, 1vw, 16px);
  margin-top: clamp(32px, 4vw, 56px);
}
.mosaic figure { position: relative; overflow: hidden; background: var(--paper-2); }
.mosaic img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.82) contrast(1.03); }
.mosaic figure:hover img { transform: scale(1.035); }
.mosaic figcaption {
  position: absolute; left: 0; bottom: 0; padding: 10px 14px; background: var(--paper);
  font-family: var(--data); font-size: .6875rem; letter-spacing: .06em; color: var(--graphite-dim);
}
.mosaic__a { grid-column: span 7; aspect-ratio: 16 / 10; }
.mosaic__b { grid-column: span 5; aspect-ratio: 4 / 3; }
.mosaic__c { grid-column: span 4; aspect-ratio: 4 / 3; }
.mosaic__d { grid-column: span 8; aspect-ratio: 16 / 9; }

.chain {
  display: grid; grid-template-columns: repeat(4, 1fr); margin-top: clamp(36px, 4vw, 64px);
  border-top: 1px solid var(--hair-light);
}
.chain li { padding: 20px 20px 0 0; position: relative; }
.chain li::before {
  content: ""; position: absolute; top: -3px; left: 0; width: 5px; height: 5px;
  background: var(--signal); border-radius: 50%;
}
.chain b { display: block; font-family: var(--serif); font-weight: 900; font-size: 1.15rem; }
.chain span { display: block; margin-top: 6px; font-size: .8125rem; color: var(--graphite-dim); letter-spacing: .04em; }

/* ---------- team ---------- */

.roster { display: grid; grid-template-columns: 1fr 1fr; gap: 0 clamp(32px, 5vw, 80px); margin-top: clamp(32px, 4vw, 60px); }
.roster li { padding-block: clamp(18px, 2vw, 26px); border-top: 1px solid var(--hair-dark); }
.roster b { font-family: var(--serif); font-weight: 900; font-size: 1.35rem; letter-spacing: -.01em; }
.roster span { font-family: var(--data); font-size: .6875rem; letter-spacing: .1em; color: var(--signal-soft); margin-left: 12px; }
.roster p { color: var(--ink-dim); font-size: .9375rem; margin-top: .55em; max-width: 30em; }

.timeline { margin-top: clamp(48px, 6vw, 96px); }
.timeline__title { font-family: var(--data); font-size: .75rem; letter-spacing: .14em; color: var(--ink-dim); margin-bottom: 22px; }
.timeline__list { display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; border-top: 1px solid var(--hair-dark); }
.timeline__list li { padding: 20px 16px 0 0; position: relative; }
.timeline__list li::before { content: ""; position: absolute; top: -3.5px; left: 0; width: 6px; height: 6px; background: var(--signal); }
.timeline__list time { font-family: var(--data); font-size: .75rem; letter-spacing: .04em; color: var(--ink); }
.timeline__list p { font-size: .8125rem; line-height: 1.65; color: var(--ink-dim); margin-top: .6em; }

/* ---------- contact ---------- */

.contact__grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(32px, 6vw, 100px); }
.contact__intro .h2 { margin-bottom: clamp(20px, 2.2vw, 30px); }
.contact__intro .body-lg { color: var(--graphite-dim); }
.contact__facts { margin-top: clamp(28px, 3.2vw, 46px); }
.contact__facts > div { display: grid; grid-template-columns: 76px 1fr; gap: 16px; padding-block: 14px; border-top: 1px solid var(--hair-light); }
.contact__facts > div:last-child { border-bottom: 1px solid var(--hair-light); }
.contact__facts dt { font-size: .75rem; letter-spacing: .1em; color: var(--graphite-dim); padding-top: .25em; }
.contact__facts dd { font-size: .9375rem; }
.contact__facts a { border-bottom: 1px solid var(--signal); }
.contact__facts small { display: block; font-size: .6875rem; color: var(--graphite-dim); margin-top: 2px; }

.form { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(16px, 2vw, 24px); align-content: start; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--wide { grid-column: 1 / -1; }
.field label { font-size: .75rem; letter-spacing: .1em; color: var(--graphite-dim); }
.field input, .field select, .field textarea {
  font-family: var(--sans); font-size: .9375rem; color: var(--graphite);
  background: transparent; border: 0; border-bottom: 1px solid rgba(35, 36, 39, .3);
  padding: 10px 0; border-radius: 0; transition: border-color .25s var(--ease);
}
.field input::placeholder, .field textarea::placeholder { color: #6f6c65; }
.field input:hover, .field select:hover, .field textarea:hover { border-bottom-color: var(--graphite-dim); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-bottom-color: var(--signal);
  box-shadow: 0 1px 0 0 var(--signal);
}
.field textarea { resize: vertical; min-height: 96px; }
.field select {
  appearance: none; padding-right: 26px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5' fill='none' stroke='%23232427' stroke-width='1.4'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 4px center;
}
.field.has-error input, .field.has-error textarea { border-bottom-color: var(--signal); box-shadow: 0 1px 0 0 var(--signal); }
.field__err { font-size: .75rem; color: #b83a06; }

.hp {
  position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden;
}

.check {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: .8125rem; line-height: 1.7; color: var(--graphite-dim);
  letter-spacing: 0; cursor: pointer;
}
.check input {
  width: 16px; height: 16px; margin: 3px 0 0; flex: 0 0 auto;
  accent-color: var(--signal); cursor: pointer;
}
.check a { color: var(--graphite); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--hair-light); }
.check a:hover { text-decoration-color: var(--signal); }
.check.has-error span { color: #b83a06; }

.form__err {
  grid-column: 1 / -1; padding: 14px 16px; border: 1px solid var(--signal-ink);
  color: var(--signal-ink); font-size: .875rem; line-height: 1.65;
}
.form__err a { text-decoration: underline; text-underline-offset: 3px; }

.form__privacy {
  grid-column: 1 / -1; margin-top: 4px; font-size: .75rem; line-height: 1.8;
  color: var(--graphite-dim); max-width: 46em;
}

.form__foot { grid-column: 1 / -1; display: flex; align-items: center; gap: 20px; flex-wrap: wrap; margin-top: 8px; }
.form__hint { font-size: .75rem; color: var(--graphite-dim); }
.form__hint a { color: var(--graphite); border-bottom: 1px solid var(--signal); }
.form.is-sending .btn--signal { cursor: progress; }
.form__done {
  grid-column: 1 / -1; padding: 18px 20px; border: 1px solid var(--signal);
  font-size: .9375rem; color: var(--graphite); background: rgba(232, 80, 15, .07);
}

/* ---------- footer ---------- */

.foot { background: var(--carbon); padding-block: clamp(48px, 6vw, 88px) 24px; }
.foot__grid { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 3fr) minmax(0, 3fr); gap: clamp(24px, 4vw, 64px); }
.foot__brand img { width: 132px; }
.foot__brand p { color: var(--ink-dim); font-size: .875rem; margin-top: 18px; line-height: 1.8; }
.foot__nav { display: flex; flex-direction: column; gap: 10px; }
.foot__nav a { color: var(--ink-dim); font-size: .875rem; transition: color .2s var(--ease); }
.foot__nav a:hover { color: var(--ink); }
.foot__meta { color: var(--ink-dim); font-size: .8125rem; line-height: 2; }
.foot__meta a { border-bottom: 1px solid var(--hair-dark); }
.foot__icp {
  color: inherit; text-decoration: none;
  border-bottom: 1px solid rgba(244, 242, 236, .24);
  transition: color .25s var(--ease), border-color .25s var(--ease);
}
.foot__icp:hover, .foot__icp:focus-visible { color: var(--ink); border-bottom-color: var(--signal); }
.foot__bottom {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  margin-top: clamp(36px, 4vw, 64px); padding-top: 18px;
  border-top: 1px solid var(--hair-dark); font-size: .75rem; color: #948f88;
}

/* ---------- motion ---------- */

[data-reveal] { will-change: opacity, transform; }
[data-reveal="text"] {
  opacity: 0; transform: translateY(16px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
  transition-delay: calc(var(--i, 0) * 70ms);
}
[data-reveal="text"].is-in { opacity: 1; transform: none; }
[data-reveal="img"] img {
  clip-path: inset(0 0 100% 0);
  transition: clip-path 1.15s var(--ease), transform 1.2s var(--ease);
  transition-delay: calc(var(--i, 0) * 90ms);
}
[data-reveal="img"].is-in img { clip-path: inset(0 0 0 0); }

/* ---------- responsive ---------- */

@media (max-width: 1100px) {
  .nav { display: none; }
  .topbar__cta { display: none; }
  .menu-btn {
    display: grid; place-items: center; width: 42px; height: 42px;
    background: none; border: 1px solid var(--hair-dark); cursor: pointer;
  }
  .menu-btn__bars, .menu-btn__bars::before, .menu-btn__bars::after {
    display: block; width: 18px; height: 1.5px; background: var(--ink);
    transition: transform .3s var(--ease), opacity .2s var(--ease);
  }
  .menu-btn__bars { position: relative; }
  .menu-btn__bars::before, .menu-btn__bars::after { content: ""; position: absolute; left: 0; }
  .menu-btn__bars::before { top: -6px; }
  .menu-btn__bars::after { top: 6px; }
  .menu-btn[aria-expanded="true"] .menu-btn__bars { background: transparent; }
  .menu-btn[aria-expanded="true"] .menu-btn__bars::before { transform: translateY(6px) rotate(45deg); }
  .menu-btn[aria-expanded="true"] .menu-btn__bars::after { transform: translateY(-6px) rotate(-45deg); }
  .mobile-menu[hidden] { display: none; }
  .mobile-menu:not([hidden]) { display: block; }

  .tech__grid { grid-template-columns: 1fr; gap: 40px; }
  .tech__aside { max-width: none; position: static; }
  .matrix { grid-template-columns: 1fr; }
  .matrix__index {
    flex-direction: row; overflow-x: auto; gap: 0; scrollbar-width: none;
    mask-image: linear-gradient(90deg, #000 0, #000 calc(100% - 44px), transparent 100%);
  }
  .matrix__index::-webkit-scrollbar { display: none; }
  .matrix__tab { border-top: 0; border-bottom: 1px solid var(--hair-dark); white-space: nowrap; min-width: 148px; }
  .matrix__tab::before { top: auto; bottom: -1px; left: 0; transform: scale(0); }
  .matrix__tab.is-active::before { transform: scale(1); }
  .matrix__tab:hover { padding-left: 18px; }
  .contact__grid, .sec-head, .sec-head--narrow { grid-template-columns: 1fr; }
  .roster { grid-template-columns: 1fr; }
  .timeline__list { grid-template-columns: repeat(3, 1fr); row-gap: 26px; }
  .foot__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
  .plate { grid-template-columns: 1fr; }
  .plate__data { border-left: 0; border-top: 1px solid var(--hair-dark); }
  .plate__art img { max-height: 260px; }
  .scene { grid-template-columns: 1fr; }
  .scene--b .scene__text { order: 2; }
  .scene--b .scene__media { order: 1; }
  .scene__text { padding-inline: clamp(20px, var(--gutter), 48px); max-width: none; }

  .manifest__row { grid-template-columns: repeat(3, 1fr); }
  .manifest__cell { border-top: 1px solid var(--hair-dark); padding: 14px 14px 18px; }
  .manifest__cell:nth-child(-n + 3) { border-top: 0; }
  .manifest__cell:nth-child(3n + 1) { border-left: 0; padding-left: 0; }
  .ledger__row { grid-template-columns: 1fr; gap: 10px; }
  .ledger__tag { justify-self: start; order: -1; }
  .press__list li { grid-template-columns: 1fr auto; gap: 8px 16px; }
  .press__list span { grid-column: 1 / -1; }
  .press__list time { justify-self: end; }
  .mosaic { grid-template-columns: 1fr; }
  .mosaic__a, .mosaic__b, .mosaic__c, .mosaic__d { grid-column: span 1; aspect-ratio: 4 / 3; }
  .mosaic__a { aspect-ratio: 16 / 11; }
  .chain { grid-template-columns: 1fr 1fr; row-gap: 22px; }
  .form { grid-template-columns: 1fr; }
  .foot__grid { grid-template-columns: 1fr; }
  .timeline__list { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
  .hero__inner { padding-block: 120px 0; }
  .hero__title { font-size: clamp(2rem, 8.4vw, 2.6rem); line-height: 1.1; }
  .manifest__cell { padding: 16px 14px 18px; }
  .kvc { gap: 20px; }
  .specs { grid-template-columns: 1fr; }
  .specs > div:nth-child(even) { padding-left: 0; }
  .timeline__list, .chain { grid-template-columns: 1fr; }
  .matrix__tab { min-width: 132px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
  [data-reveal="img"] img { clip-path: none !important; }
  .hero__media { transform: none !important; }
}