/* EYESHOT 颜界 — design system
   黑 / 白 / 青绿三色体系，大留白，横向网格（依据品牌深化文档） */

:root {
  --ink: #0c0f0e;
  --ink-soft: #3d4442;
  --ink-mute: #7a827f;
  --paper: #ffffff;
  --paper-dim: #f5f6f5;
  --line: #e4e7e6;
  --teal: #0fa693;
  --teal-deep: #0b7f71;
  --teal-tint: #e6f5f2;
  --maxw: 1180px;
  --radius: 4px;
  --font: "Inter", "HarmonyOS Sans SC", "PingFang SC", "Source Han Sans SC",
    "Noto Sans SC", "Microsoft YaHei", -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; gap: 28px;
  height: 68px;
}
.logo img { height: 34px; width: auto; }
.nav { display: flex; gap: 22px; margin-left: auto; flex-wrap: wrap; }
.nav a {
  font-size: 14.5px; color: var(--ink-soft); letter-spacing: .02em;
  padding: 6px 2px; border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--ink); }
.nav a.active { color: var(--ink); border-bottom-color: var(--teal); }
.lang-switch {
  font-size: 13px; color: var(--ink-mute);
  border: 1px solid var(--line); border-radius: 99px;
  padding: 4px 14px; white-space: nowrap;
}
.lang-switch:hover { border-color: var(--teal); color: var(--teal-deep); }
.nav-toggle { display: none; }

/* ---------- hero ---------- */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background: var(--ink);
}
.hero .hero-bg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; opacity: .55;
}
.hero .wrap {
  position: relative; z-index: 1; padding: 120px 24px 96px;
}
.hero.hero-page .wrap { padding: 72px 24px 56px; }
.hero.hero-gradient::before,
.hero.hero-gradient::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero.hero-gradient::before {
  background:
    radial-gradient(circle at 18% 24%, rgba(27, 168, 149, .44), transparent 32%),
    radial-gradient(circle at 78% 10%, rgba(218, 196, 139, .26), transparent 30%),
    radial-gradient(circle at 64% 90%, rgba(85, 104, 102, .34), transparent 44%),
    linear-gradient(118deg, #10100f 0%, #1c2522 46%, #0d0e0d 100%);
}
.hero.hero-gradient::after {
  opacity: .46;
  background:
    linear-gradient(90deg, rgba(0,0,0,.54), transparent 56%),
    repeating-linear-gradient(135deg, rgba(255,255,255,.04) 0 1px, transparent 1px 22px);
  mix-blend-mode: screen;
}
.hero-material::before {
  background:
    radial-gradient(circle at 16% 26%, rgba(236, 226, 199, .42), transparent 28%),
    radial-gradient(circle at 70% 30%, rgba(35, 154, 139, .30), transparent 32%),
    linear-gradient(126deg, #171514 0%, #2c2a24 48%, #101415 100%) !important;
}
.hero-products::before {
  background:
    radial-gradient(circle at 70% 20%, rgba(207, 184, 116, .38), transparent 30%),
    radial-gradient(circle at 18% 72%, rgba(20, 152, 137, .32), transparent 35%),
    linear-gradient(122deg, #121211 0%, #292319 48%, #0d1110 100%) !important;
}
.hero-solutions::before {
  background:
    radial-gradient(circle at 22% 26%, rgba(26, 174, 157, .36), transparent 28%),
    radial-gradient(circle at 82% 72%, rgba(178, 195, 180, .24), transparent 35%),
    linear-gradient(124deg, #101312 0%, #1f2d2b 46%, #0b0c0c 100%) !important;
}
.hero-projects::before {
  background:
    radial-gradient(circle at 72% 22%, rgba(196, 178, 128, .34), transparent 30%),
    radial-gradient(circle at 26% 78%, rgba(62, 92, 94, .38), transparent 36%),
    linear-gradient(118deg, #12110f 0%, #282521 50%, #0d0e0f 100%) !important;
}
.hero-project-detail {
  min-height: 280px;
  background:
    radial-gradient(circle at 12% 24%, rgba(27, 168, 149, .46), transparent 29%),
    radial-gradient(circle at 82% 16%, rgba(213, 189, 122, .30), transparent 32%),
    radial-gradient(circle at 64% 88%, rgba(83, 99, 97, .36), transparent 42%),
    linear-gradient(119deg, #0b0d0d 0%, #1a211f 45%, #29261d 72%, #080909 100%);
}
.hero-project-detail::before,
.hero-project-detail::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-project-detail::before {
  opacity: .52;
  background:
    linear-gradient(90deg, rgba(0,0,0,.52), rgba(0,0,0,.16) 58%, rgba(0,0,0,.34)),
    repeating-linear-gradient(135deg, rgba(255,255,255,.045) 0 1px, transparent 1px 24px);
}
.hero-project-detail::after {
  opacity: .28;
  background:
    radial-gradient(circle at 32% 44%, rgba(255,255,255,.42), transparent 1px),
    radial-gradient(circle at 48% 36%, rgba(255,255,255,.26), transparent 1px),
    radial-gradient(circle at 76% 62%, rgba(255,255,255,.28), transparent 1px),
    linear-gradient(180deg, transparent 0%, rgba(0,0,0,.28) 100%);
  background-size: 100% 100%, 100% 100%, 100% 100%, 100% 100%;
  mix-blend-mode: screen;
}
.hero-project-detail .wrap {
  max-width: 1180px;
}
.hero-resources::before {
  background:
    radial-gradient(circle at 18% 18%, rgba(232, 224, 204, .34), transparent 28%),
    radial-gradient(circle at 76% 76%, rgba(31, 165, 146, .30), transparent 32%),
    linear-gradient(120deg, #111314 0%, #262c2a 52%, #10100f 100%) !important;
}
.hero-contact::before {
  background:
    radial-gradient(circle at 70% 22%, rgba(30, 171, 153, .40), transparent 30%),
    radial-gradient(circle at 18% 78%, rgba(217, 192, 129, .30), transparent 34%),
    linear-gradient(120deg, #111110 0%, #1c2927 48%, #0c0d0d 100%) !important;
}
.kicker {
  font-size: 13px; letter-spacing: .28em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 18px; font-weight: 600;
}
.hero h1 {
  font-size: clamp(30px, 5vw, 54px); line-height: 1.25;
  font-weight: 700; letter-spacing: .04em; max-width: 21em;
}
.hero .sub {
  margin-top: 20px; max-width: 40em; font-size: 17px;
  color: rgba(255,255,255,.82);
}
.cta-row { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 12px 28px; border-radius: 2px;
  font-size: 15px; letter-spacing: .05em; transition: .18s;
  border: 1px solid transparent;
}
.btn-primary { background: var(--teal); color: #fff; }
.btn-primary:hover { background: var(--teal-deep); color: #fff; }
.btn-primary:focus-visible {
  background: var(--teal-deep);
  color: #fff;
  outline: 2px solid color-mix(in srgb, var(--teal) 55%, white);
  outline-offset: 3px;
}
.btn-ghost { border-color: rgba(255,255,255,.5); color: #fff; }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,.08); }
.btn-dark { border-color: var(--ink); color: var(--ink); }
.btn-dark:hover { background: var(--ink); color: #fff; }

/* homepage restored hero: keeps the full multi-page site, but restores the
   dark editorial first-screen language the previous stable version used. */
body.home .site-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: transparent;
  border-bottom: 0;
  backdrop-filter: none;
}
body.home .site-header .wrap {
  height: auto;
  margin-top: 24px;
  padding: 12px 24px;
  border-radius: 999px;
  background: rgba(255,255,255,0.01);
  background-blend-mode: luminosity;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  box-shadow: inset 0 1px 1px rgba(255,255,255,0.1);
}
body.home .logo img { filter: none; }
.logo-lockup {
  display: grid;
  justify-items: center;
  gap: 5px;
  flex: 0 0 auto;
}
body.home .logo-lockup img { height: 32px; }
.brand-slogan {
  color: rgba(255,255,255,.76);
  font-size: 9px;
  line-height: 1;
  letter-spacing: .24em;
  white-space: nowrap;
}
body.home .nav a,
body.home .lang-switch { color: rgba(255,255,255,.82); border-color: rgba(255,255,255,.18); }
body.home .nav a:hover,
body.home .lang-switch:hover { color: #fff; border-color: rgba(255,255,255,.46); }
.hero.home-hero {
  min-height: 100svh;
  display: block;
  text-align: left;
  overflow: hidden;
  background: #030303;
}
.home-hero video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: bottom;
  opacity: 1;
  z-index: 0;
}
.home-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0,0,0,.82) 0%, rgba(0,0,0,.58) 48%, rgba(0,0,0,.28) 78%, rgba(0,0,0,.44) 100%),
    linear-gradient(180deg, rgba(0,0,0,.24), rgba(0,0,0,.04) 44%, rgba(0,0,0,.82) 100%);
  pointer-events: none;
}
.home-hero .wrap.home-hero-explainer {
  z-index: 1;
  min-height: 100svh;
  padding: clamp(132px, 14vh, 170px) 24px clamp(38px, 6vh, 64px);
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(240px, .55fr);
  grid-template-areas:
    "copy media"
    "list list";
  column-gap: clamp(36px, 5vw, 84px);
  row-gap: clamp(28px, 4vh, 48px);
  align-content: center;
  align-items: end;
  transform: none;
  text-align: left;
}
.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;
}
.home-hero .kicker { color: rgba(255,255,255,.48); }
.home-hero-definition-copy {
  grid-area: copy;
  max-width: 52em;
  text-shadow: 0 2px 24px rgba(0,0,0,.72);
}
.home-hero-definition-copy h1 {
  max-width: 12em;
  margin-top: 12px;
  color: #fff;
  font-size: clamp(36px, 4vw, 58px);
  line-height: 1.14;
  letter-spacing: -.025em;
  text-wrap: balance;
}
.home-hero-definition-intro {
  max-width: 48em;
  margin-top: 22px;
  color: rgba(255,255,255,.78);
  font-size: clamp(15px, 1.28vw, 18px);
  line-height: 1.8;
  text-wrap: pretty;
}
.home-hero-definition-media {
  grid-area: media;
  position: relative;
  min-width: 0;
  margin: 0;
  display: grid;
  justify-items: center;
  align-self: center;
}
.home-hero-definition-media::before {
  content: "";
  position: absolute;
  inset: 12% 4%;
  background: radial-gradient(ellipse at center, rgba(255,255,255,.14), transparent 68%);
  filter: blur(28px);
  pointer-events: none;
}
.home-hero-definition-media img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  max-height: clamp(300px, 48vh, 520px);
  object-fit: contain;
  opacity: .84;
  mix-blend-mode: screen;
  filter: contrast(1.12) brightness(.92);
  -webkit-mask-image: radial-gradient(ellipse 78% 92% at 50% 52%, #000 54%, rgba(0,0,0,.9) 70%, transparent 100%);
  mask-image: radial-gradient(ellipse 78% 92% at 50% 52%, #000 54%, rgba(0,0,0,.9) 70%, transparent 100%);
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
}
.home-hero-definition-media figcaption {
  position: relative;
  z-index: 2;
  margin-top: 10px;
  color: rgba(255,255,255,.48);
  font-size: 11px;
  letter-spacing: .12em;
}
.home-hero-definition-list {
  grid-area: list;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid rgba(255,255,255,.24);
}
.home-hero-definition-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  min-width: 0;
  padding: 20px 24px 0 0;
}
.home-hero-definition-item + .home-hero-definition-item {
  padding-left: 24px;
  border-left: 1px solid rgba(255,255,255,.18);
}
.home-hero-definition-item > span {
  color: var(--teal);
  font-size: 12px;
  letter-spacing: .12em;
  font-variant-numeric: tabular-nums;
}
.home-hero-definition-item h2 {
  margin-bottom: 6px;
  color: #fff;
  font-size: clamp(16px, 1.45vw, 20px);
  line-height: 1.4;
}
.home-hero-definition-item p {
  color: rgba(255,255,255,.64);
  font-size: 13.5px;
  line-height: 1.65;
  text-wrap: pretty;
}

/* ---------- sections ---------- */
.section { padding: 84px 0; }
.section.dim { background: var(--paper-dim); }
.section-head { margin-bottom: 44px; max-width: 46em; }
.section-head .kicker { color: var(--teal-deep); }
.section-head h2 {
  font-size: clamp(24px, 3.2vw, 36px); line-height: 1.35; font-weight: 700;
}
.section-head p { margin-top: 12px; color: var(--ink-soft); }

/* definition band (GEO core statement) */
.definition {
  border-left: 3px solid var(--teal);
  background: var(--teal-tint);
  padding: 26px 30px; font-size: 17px; line-height: 1.9;
  color: var(--ink-soft); border-radius: 0 var(--radius) var(--radius) 0;
}
.definition-compact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
}
.definition-compact strong { color: var(--ink); font-size: 22px; }
.definition-compact span { color: var(--ink-mute); letter-spacing: .08em; }

/* stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.stats div { background: var(--paper); padding: 30px 24px; text-align: center; }
.stats b { display: block; font-size: 34px; color: var(--teal-deep); font-weight: 700; }
.stats span { font-size: 13.5px; color: var(--ink-mute); }

/* card grids */
.image-title { padding: 20px 22px 22px; }
.image-title h3 { margin: 0; }
.image-title > span {
  display: block;
  margin-top: 7px;
  color: var(--ink-mute);
  font-size: 11px;
  letter-spacing: .16em;
}
.feature-link { color: inherit; }
.feature-link:hover .fig img { transform: scale(1.018); }
.feature-link .fig { overflow: hidden; }
.feature-link .fig img { transition: transform .5s ease; }
.feature-title span {
  display: block;
  margin-top: 10px;
  color: var(--ink-mute);
  font-size: 12px;
  letter-spacing: .18em;
}
.grid { display: grid; gap: 28px; }
.grid.c2 { grid-template-columns: repeat(2, 1fr); }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
.grid.c4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 14px 34px rgba(12,15,14,.10); }
.card .thumb { aspect-ratio: 16/10; overflow: hidden; background: var(--paper-dim); }
.card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.card:hover .thumb img { transform: scale(1.04); }
.card .body { padding: 20px 22px 24px; }
.card h3 { font-size: 18px; font-weight: 700; }
.card .meta { font-size: 12.5px; color: var(--teal-deep); letter-spacing: .12em; text-transform: uppercase; margin-bottom: 6px; }
.card p { font-size: 14.5px; color: var(--ink-soft); margin-top: 8px; }
.card .more { display: inline-block; margin-top: 14px; font-size: 13.5px; color: var(--teal-deep); letter-spacing: .06em; }

/* texture grid */
.textures { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.texture { position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 3/4; }
.texture img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.texture:hover img { transform: scale(1.05); }
.texture .label {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 34px 16px 14px; color: #fff;
  background: linear-gradient(transparent, rgba(0,0,0,.72));
  font-size: 15px; font-weight: 600;
}
.texture .label small { display: block; font-weight: 400; font-size: 12px; opacity: .85; }
.textures.material-boards { grid-template-columns: repeat(2, 1fr); gap: 22px; }
.textures.material-boards .texture { aspect-ratio: 8/5; background: #f7f6f1; border: 1px solid var(--line); }
.textures.material-boards .texture img { object-fit: contain; background: #f7f6f1; }
.textures.material-boards .texture:hover img { transform: none; }
.material-more-note {
  margin: 26px auto 0;
  max-width: 760px;
  padding: 16px 22px;
  border: 1px solid color-mix(in srgb, var(--teal) 24%, var(--line));
  color: var(--ink-soft);
  background: color-mix(in srgb, var(--paper) 90%, var(--teal) 10%);
  text-align: center;
  line-height: 1.8;
}

/* homepage editorial system */
.home-overview { background: linear-gradient(180deg, #fff 0%, #f8faf9 100%); }
.home-lead { max-width: 58em; }
.home-lead h2 { font-size: clamp(28px, 4vw, 48px); letter-spacing: -.01em; }
.home-principles {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(280px, .8fr);
  gap: 24px;
  align-items: stretch;
}
.home-principle {
  display: block;
  border: 1px solid var(--line);
  background: var(--paper);
  border-radius: var(--radius);
  overflow: hidden;
}
.home-principle.main {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr);
  min-height: 430px;
}
.home-principle.main.wide { grid-column: 1 / -1; }
.home-principle-img {
  background: #05080c;
  display: grid;
  place-items: center;
}
.home-principle-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.home-principle-copy {
  padding: clamp(28px, 4vw, 48px);
  align-self: center;
}
.home-principle-copy span,
.home-product span,
.home-solution-card span {
  display: block;
  color: var(--teal-deep);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.home-principle-copy h3 {
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.32;
  margin-bottom: 14px;
}
.home-principle-copy p,
.home-principle.stack span,
.home-product p,
.home-solution-card p,
.home-proof p {
  color: var(--ink-soft);
  text-wrap: pretty;
}
.home-principle.stack {
  display: grid;
  gap: 24px;
  background: transparent;
  border: 0;
}
.home-principle.stack a {
  display: block;
  border: 1px solid var(--line);
  border-top: 3px solid var(--teal);
  background: var(--paper);
  padding: 28px 30px;
  min-height: 0;
}
.home-principle.stack strong {
  display: block;
  font-size: 20px;
  margin-bottom: 10px;
}
.home-texture-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.home-texture-strip .texture {
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line);
  background: #f7f6f1;
}
.home-texture-strip .texture img {
  object-fit: contain;
  background: #f7f6f1;
}
.home-texture-strip .texture:hover img { transform: none; }
.home-product-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.home-product {
  border: 1px solid var(--line);
  background: var(--paper);
  border-radius: var(--radius);
  overflow: hidden;
}
.home-product img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.home-product div { padding: 24px 26px 28px; }
.home-product h3,
.home-solution-card h3,
.home-proof h3 {
  font-size: 21px;
  line-height: 1.35;
  margin-bottom: 10px;
}
.home-solution-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}
.home-solution-card {
  position: relative;
  min-height: clamp(380px, 38vw, 520px);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink);
  color: #fff;
}
.home-solution-card.large { grid-column: auto; }
.home-solution-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .72;
  transition: transform .5s, opacity .3s;
}
.home-solution-card:hover img {
  transform: scale(1.035);
  opacity: .84;
}
.home-solution-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,.05), rgba(0,0,0,.74));
}
.home-solution-card div {
  position: absolute;
  z-index: 1;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 32px 28px;
}
.home-solution-card span { color: rgba(255,255,255,.72); }
.home-solution-card p { color: rgba(255,255,255,.82); }
.home-proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.home-proof {
  display: grid;
  grid-template-rows: auto 1fr;
  border: 1px solid var(--line);
  background: var(--paper);
  border-radius: var(--radius);
  overflow: hidden;
}
.home-proof img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
.home-proof div { padding: 22px 24px 26px; }
.home-proof small {
  display: block;
  color: var(--teal-deep);
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: 12px;
  margin-bottom: 8px;
}

/* spec table */
.spec-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.spec-table th, .spec-table td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec-table th { width: 200px; color: var(--ink-mute); font-weight: 600; white-space: nowrap; }

/* modules (solution pages) */
.modules { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.module {
  border: 1px solid var(--line); border-top: 3px solid var(--teal);
  border-radius: var(--radius); padding: 24px 26px; background: var(--paper);
}
.module h3 { font-size: 17px; margin-bottom: 8px; }
.module p { font-size: 14.5px; color: var(--ink-soft); }
.process {
  margin-top: 34px; padding: 18px 24px; background: var(--paper-dim);
  border-radius: var(--radius); font-size: 15px; color: var(--ink-soft);
}
.process b { color: var(--teal-deep); margin-right: 10px; }
.solution-visual-lead {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr);
  gap: 26px;
  align-items: stretch;
  margin: 28px 0 30px;
}
.solution-visual-lead.rev {
  grid-template-columns: minmax(320px, .92fr) minmax(0, 1.08fr);
}
.solution-visual-lead.rev figure { order: 2; }
.solution-visual-lead figure {
  margin: 0;
  min-height: 360px;
  border-radius: var(--radius);
  overflow: hidden;
  background: #10130f;
}
.solution-visual-lead img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
  display: block;
}
.solution-visual-copy {
  border-radius: var(--radius);
  background: var(--paper-dim);
  padding: clamp(30px, 4vw, 54px);
  display: grid;
  align-content: center;
  border-left: 3px solid var(--teal);
}
.solution-visual-copy h2 {
  font-size: clamp(28px, 4.2vw, 52px);
  line-height: 1.08;
  letter-spacing: -.02em;
  max-width: 9.5em;
}
.solution-visual-copy p {
  margin-top: 18px;
  max-width: 30em;
  color: var(--ink-soft);
  font-size: 16.5px;
}
.visual-modules {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-top: 22px;
}
.visual-modules-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.visual-module {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper);
}
.visual-module img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: #10130f;
}
.visual-module div { padding: 20px 22px 24px; }
.visual-module span {
  display: block;
  color: var(--teal-deep);
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: 11.5px;
  margin-bottom: 8px;
}
.visual-module h3 { font-size: 18px; margin-bottom: 8px; }
.visual-module p { font-size: 14.5px; color: var(--ink-soft); }

/* project page */
.project-meta { display: flex; gap: 34px; flex-wrap: wrap; padding: 22px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin: 30px 0 44px; }
.project-meta div { font-size: 14px; }
.project-meta small { display: block; color: var(--ink-mute); letter-spacing: .1em; text-transform: uppercase; font-size: 11.5px; margin-bottom: 3px; }
.narrative { max-width: 46em; }
.narrative h3 { font-size: 20px; margin: 36px 0 10px; }
.narrative h3::before { content: ""; display: inline-block; width: 22px; height: 3px; background: var(--teal); margin-right: 12px; vertical-align: middle; }
.narrative p { color: var(--ink-soft); }
.case-summary {
  max-width: 52em;
  margin-bottom: 48px;
}
.case-summary p {
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.72;
  color: var(--ink);
  text-wrap: pretty;
}
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 44px; }
.gallery img { border-radius: var(--radius); width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.gallery img:first-child:nth-last-child(1) { grid-column: 1 / -1; aspect-ratio: 21/9; }
.project-gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 72px);
  margin-top: 0;
}
.project-gallery img {
  display: block;
  width: 100%;
  height: min(82vh, 900px);
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
}
.project-gallery img:first-child:nth-last-child(1) {
  aspect-ratio: 16 / 9;
}

.product-gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 72px);
  margin-top: 34px;
}
.product-gallery.c2 { grid-template-columns: 1fr; }
.product-shot {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.product-shot img {
  display: block;
  width: 100%;
  height: min(82vh, 900px);
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #fff;
}
.product-shot figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}
.material-proof {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 72px);
  margin-top: 30px;
}
.material-proof figure {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.material-proof img {
  display: block;
  width: 100%;
  height: min(82vh, 900px);
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #fff;
}
.material-proof figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}
.poster-wall {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 72px);
  margin-top: 34px;
}
.poster-wall.mixed {
  grid-template-columns: 1fr;
  align-items: start;
}
.poster-wall.mixed .poster-card.landscape { grid-column: auto; }
.poster-wall.mixed .poster-card.landscape img {
  height: min(82vh, 900px);
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #101010;
}
.poster-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--ink);
  border: 1px solid var(--line);
}
.poster-card img {
  display: block;
  width: 100%;
  height: min(82vh, 900px);
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform .5s, opacity .3s;
}
.poster-card:hover img {
  transform: scale(1.035);
  opacity: .92;
}
.poster-card figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 42px 14px 14px;
  color: #fff;
  background: linear-gradient(transparent, rgba(0,0,0,.72));
  font-size: 14px;
  line-height: 1.45;
}
.poster-card figcaption small {
  display: block;
  color: rgba(255,255,255,.72);
  font-size: 12px;
  margin-top: 2px;
}
.detail-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px;
}
.detail-list div {
  border-top: 3px solid var(--teal);
  background: var(--paper);
  padding: 18px 20px;
}
.detail-list h3 {
  font-size: 17px;
  margin-bottom: 8px;
}
.detail-list p {
  color: var(--ink-soft);
  font-size: 14.5px;
}

/* faq */
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; padding: 18px 4px; font-size: 16.5px; font-weight: 600;
  list-style: none; position: relative; padding-right: 40px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  color: var(--teal); font-size: 22px; font-weight: 400;
}
.faq details[open] summary::after { content: "–"; }
.faq .a { padding: 0 4px 20px; color: var(--ink-soft); max-width: 52em; }

/* downloads */
.dl-list li {
  display: flex; align-items: center; gap: 16px; padding: 18px 4px;
  border-bottom: 1px solid var(--line); flex-wrap: wrap;
}
.dl-list .name { font-weight: 600; }
.dl-list .name small { display: block; font-weight: 400; color: var(--ink-mute); font-size: 13px; }
.dl-list a.btn { margin-left: auto; padding: 8px 20px; font-size: 13.5px; }

/* contact */
.contact-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: start; }
.contact-card { background: var(--ink); color: #fff; border-radius: var(--radius); padding: 38px 36px; }
.contact-card h3 { font-size: 22px; margin-bottom: 18px; }
.contact-card p { color: rgba(255,255,255,.8); font-size: 15px; margin-bottom: 10px; }
.contact-card b { color: #fff; }
.contact-card a { color: var(--teal); }
.contact-card .btn-primary {
  background: var(--teal-deep);
  color: #fff;
}
.contact-card .btn-primary:hover,
.contact-card .btn-primary:focus-visible {
  background: #075f55;
  color: #fff;
}
.contact-note { font-size: 14px; color: var(--ink-mute); margin-top: 18px; }

/* breadcrumbs */
.crumbs { font-size: 13px; color: var(--ink-mute); margin-bottom: 18px; }
.crumbs a:hover { color: var(--teal-deep); }

/* footer */
.site-footer { background: var(--ink); color: rgba(255,255,255,.75); margin-top: 40px; }
.site-footer .wrap { padding: 56px 24px 40px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 36px; }
.site-footer h4 { color: #fff; font-size: 14px; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 14px; }
.site-footer li { margin-bottom: 8px; font-size: 14px; }
.site-footer a:hover { color: var(--teal); }
.foot-brand img { height: 30px; margin-bottom: 14px; }
.foot-brand p { font-size: 13.5px; max-width: 26em; }
.foot-bottom {
  border-top: 1px solid rgba(255,255,255,.12); margin-top: 40px;
  padding-top: 22px; font-size: 12.5px; color: rgba(255,255,255,.45);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}

/* two-col feature (image + text) */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.feature.rev > .fig { order: 2; }
.feature .fig img { border-radius: var(--radius); width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.feature .fig.fig-wide img { aspect-ratio: 16/9; object-fit: contain; background: #05080c; }
.feature h3 { font-size: 24px; margin-bottom: 12px; }
.feature p { color: var(--ink-soft); }
.feature .more { display: inline-block; margin-top: 16px; color: var(--teal-deep); font-size: 14.5px; letter-spacing: .05em; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .grid.c3, .grid.c4 { grid-template-columns: repeat(2, 1fr); }
  .textures { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .modules, .feature, .contact-grid, .solution-visual-lead, .solution-visual-lead.rev, .visual-modules, .visual-modules-3 { grid-template-columns: 1fr; }
  .solution-visual-lead.rev figure { order: 0; }
  .home-principles,
  .home-principle.main,
  .home-product-row,
  .home-proof-grid { grid-template-columns: 1fr; }
  .home-texture-strip,
  .home-solution-grid { grid-template-columns: repeat(2, 1fr); }
  .home-solution-card.large { grid-column: auto; }
  .home-hero .wrap.home-hero-explainer {
    grid-template-columns: minmax(0, 1fr) minmax(220px, .58fr);
    grid-template-areas:
      "copy media"
      "list list";
    align-content: start;
  }
  .home-hero-definition-list { grid-template-columns: 1fr; }
  .home-hero-definition-item { padding: 18px 0; }
  .home-hero-definition-item + .home-hero-definition-item {
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid rgba(255,255,255,.18);
  }
  .feature.rev > .fig { order: 0; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .gallery { grid-template-columns: 1fr 1fr; }
  .poster-wall { grid-template-columns: 1fr; }
  .product-gallery.c2, .material-proof, .detail-list { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .site-header .wrap { height: auto; padding: 12px 18px; flex-wrap: wrap; }
  .nav { gap: 14px; width: 100%; order: 3; padding-bottom: 8px; }
  .nav a { font-size: 13.5px; }
  body.home .logo-lockup { justify-items: start; }
  body.home .logo-lockup img { height: 28px; }
  .brand-slogan { font-size: 8px; letter-spacing: .16em; }
  .home-hero .wrap.home-hero-explainer {
    grid-template-columns: 1fr;
    grid-template-areas:
      "copy"
      "media"
      "list";
    gap: 32px;
    padding: 150px 20px 48px;
  }
  .home-hero-definition-copy h1 { font-size: 34px; }
  .home-hero-definition-intro { font-size: 15px; line-height: 1.75; }
  .home-hero-definition-media { width: min(100%, 340px); margin: 0 auto; }
  .home-hero-definition-media img { max-height: 52vh; }
  .grid.c2, .grid.c3, .grid.c4, .gallery { grid-template-columns: 1fr; }
  .home-texture-strip,
  .home-solution-grid { grid-template-columns: 1fr; }
  .home-solution-card,
  .home-solution-card.large { grid-column: auto; min-height: 360px; }
  .project-gallery img,
  .product-shot img,
  .material-proof img,
  .poster-card img { height: 76vh; aspect-ratio: 4 / 5; }
  .definition-compact { align-items: flex-start; flex-direction: column; gap: 6px; }
  .definition-compact span { font-size: 12px; }
  .hero .wrap { padding: 72px 20px 60px; }
  .section { padding: 56px 0; }
  .spec-table th { width: 120px; }
  .poster-wall { grid-template-columns: 1fr; }
  .poster-wall.mixed { grid-template-columns: 1fr; }
  .poster-wall.mixed .poster-card.landscape { grid-column: auto; }
}