@charset "UTF-8";

/* Self-hosted variable Roboto subsets; SIL OFL 1.1 license is in assets/fonts/. */
@font-face { font-family: Roboto; font-style: normal; font-weight: 400 900; font-display: swap; src: url('../assets/fonts/roboto-cyrillic-ext.woff2') format('woff2'); unicode-range: U+0460-048F, U+0492-04AF, U+04B2-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F; }
@font-face { font-family: Roboto; font-style: normal; font-weight: 400 900; font-display: swap; src: url('../assets/fonts/roboto-cyrillic.woff2') format('woff2'); unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: Roboto; font-style: normal; font-weight: 400 900; font-display: swap; src: url('../assets/fonts/roboto-latin.woff2') format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

:root {
  color-scheme: light;
  --header-flow-height: 90px;
  --hero-header-gap: 48px;
  --ink: #102f4a;
  --night: #061d30;
  --night-rgb: 6, 29, 48;
  --night-soft: #0a3449;
  --ocean-rgb: 10, 52, 73;
  --sea: #187f92;
  --aqua: #82d9e7;
  --mint: #d9eff0;
  --accent: #91e4ef;
  --paper: #f4f8f6;
  --white: #fbfffd;
  --muted: #647d85;
  --line: rgba(16, 47, 74, .16);
  --glass-line: rgba(184, 226, 236, .22);
  --glass-highlight: rgba(211, 243, 247, .1);
  --font-caption: .8125rem;
  --font-ui: 1rem;
  --font-copy: 1.125rem;
  --font-body: clamp(1.125rem, 1.1rem + .25vw, 1.25rem);
  --display: Roboto, Arial, sans-serif;
  --body: Roboto, Arial, sans-serif;
  --page-width: 1320px;
  --gutter: clamp(22px, 5.4vw, 84px);
  --space-section: clamp(72px, 8vw, 116px);
  --space-section-mobile: 64px;
  --space-panel: clamp(24px, 3vw, 40px);
  --space-card: clamp(20px, 2.1vw, 28px);
  --space-section-gap: clamp(24px, 3.8vw, 52px);
  --space-grid: 16px;
  --space-control-x: 18px;
  --space-control-y: 12px;
  --radius-control: 14px;
  --radius-panel: 22px;
  --radius-feature: 28px;
  --radius-menu: 18px;
  --radius-pill: 999px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body {
  margin: 0;
  background: var(--night);
  color: var(--ink);
  font-family: var(--body);
  font-size: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
main { position: relative; isolation: isolate; }
button, input, select, textarea { font-family: var(--body); }
html[lang|="zh"] { --body: Roboto, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif; --display: var(--body); }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
::selection { background: var(--accent); color: var(--night); }
.shell { width: min(100% - (var(--gutter) * 2), var(--page-width)); margin-inline: auto; }
.glass-panel {
  border: 1px solid var(--glass-line);
  border-radius: var(--radius-panel);
  background: linear-gradient(135deg, rgba(211, 243, 247, .1), rgba(var(--night-rgb), .34));
  box-shadow: 0 18px 48px rgba(0, 9, 15, .16), inset 0 1px 0 rgba(255,255,255,.1);
  -webkit-backdrop-filter: blur(22px) saturate(135%);
  backdrop-filter: blur(22px) saturate(135%);
}
.glass-panel--compact { width: fit-content; max-width: 100%; padding: 8px 14px; border-radius: var(--radius-pill); }
.section-kicker.glass-panel--compact { align-self: start; justify-self: start; }
.skip-link {
  position: absolute;
  z-index: 20;
  top: 8px;
  left: 8px;
  padding: var(--space-control-y) var(--space-control-x);
  border-radius: var(--radius-control);
  background: var(--accent);
  color: var(--night);
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-flow-height);
  margin-bottom: calc(0px - var(--header-flow-height));
  border-bottom: 0;
  background: rgba(var(--night-rgb), .92);
  box-shadow: 0 8px 28px rgba(0, 9, 15, .16);
  color: var(--white);
  -webkit-backdrop-filter: blur(18px) saturate(125%);
  backdrop-filter: blur(18px) saturate(125%);
}
.site-header::after {
  position: absolute;
  right: 0;
  bottom: -28px;
  left: 0;
  height: 28px;
  background: linear-gradient(180deg, rgba(var(--night-rgb), .92), transparent);
  content: "";
  pointer-events: none;
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 100%;
  margin-top: 0;
  padding-inline: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.brand { display: inline-flex; align-items: center; gap: 11px; min-width: 205px; text-decoration: none; }
.brand__mark { flex: 0 0 auto; width: 42px; height: 42px; }
.brand__name { white-space: nowrap; font-size: var(--font-caption); line-height: 1.2; letter-spacing: .12em; font-weight: 700; }
.brand__name span { display: inline; margin-top: 0; color: var(--aqua); letter-spacing: .12em; }
.desktop-nav { display: flex; align-items: center; gap: clamp(19px, 2.8vw, 42px); }
.desktop-nav a, .header-contact {
  color: var(--white);
  font-size: var(--font-ui);
  text-decoration: none;
  transition: color .2s ease;
}
.desktop-nav a { display: flex; align-items: center; min-height: 44px; }
.desktop-nav a:hover, .header-contact:hover { color: var(--accent); }
.site-header__tools { display: flex; align-items: center; gap: 12px; }
.header-contact { display: inline-flex; align-items: center; min-height: 48px; padding: var(--space-control-y) var(--space-control-x); border: 1px solid rgba(255,255,255,.42); border-radius: var(--radius-pill); background: rgba(255,255,255,.045); color: var(--white); font-weight: 650; white-space: nowrap; }
.gravity-icon {
  display: inline-block;
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  background: currentColor;
  -webkit-mask: var(--gravity-icon) center / contain no-repeat;
  mask: var(--gravity-icon) center / contain no-repeat;
  mask-mode: alpha;
  vertical-align: middle;
}
.gravity-icon--arrow-up-right { --gravity-icon: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAxNiAxNiI+PHBhdGggZmlsbD0id2hpdGUiIGQ9Ik0xMi43MjggMi41MjFhLjc1Ljc1IDAgMCAxIC43NS43NXY1LjY1N2EuNzUxLjc1MSAwIDAgMS0xLjUgMFY1LjA4M2wtOC4xNzYgOC4xNzZhLjc1Ljc1IDAgMCAxLTEuMDYxLTEuMDZsOC4xNzYtOC4xNzdINy4wN2EuNzUuNzUgMCAwIDEgLjAwMS0xLjV6Ii8+PC9zdmc+"); }
.gravity-icon--arrow-up { --gravity-icon: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAxNiAxNiI+PHBhdGggZmlsbD0id2hpdGUiIGZpbGwtcnVsZT0iZXZlbm9kZCIgZD0iTTggMTQuNzVhLjc1Ljc1IDAgMCAxLS43NS0uNzVWMy44MUw0LjUzIDYuNTNhLjc1Ljc1IDAgMCAxLTEuMDYtMS4wNmw0LTRhLjc1Ljc1IDAgMCAxIDEuMDYgMGw0IDRhLjc1Ljc1IDAgMCAxLTEuMDYgMS4wNkw4Ljc1IDMuODFWMTRhLjc1Ljc1IDAgMCAxLS43NS43NSIgY2xpcC1ydWxlPSJldmVub2RkIi8+PC9zdmc+"); }
.gravity-icon--arrow-down { --gravity-icon: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAxNiAxNiI+PHBhdGggZmlsbD0id2hpdGUiIGZpbGwtcnVsZT0iZXZlbm9kZCIgZD0iTTggMTQuNzVhLjc1Ljc1IDAgMCAxLS43NS0uNzVWMy44MUw0LjUzIDYuNTNhLjc1Ljc1IDAgMCAxLTEuMDYtMS4wNmw0LTRhLjc1Ljc1IDAgMCAxIDEuMDYgMGw0IDRhLjc1Ljc1IDAgMCAxLTEuMDYgMS4wNkw4Ljc1IDMuODFWMTRhLjc1Ljc1IDAgMCAxLS43NS43NSIgY2xpcC1ydWxlPSJldmVub2RkIi8+PC9zdmc+"); transform: rotate(180deg); }
.gravity-icon--menu { --gravity-icon: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAxNiAxNiI+PHBhdGggZmlsbD0id2hpdGUiIGZpbGwtcnVsZT0iZXZlbm9kZCIgZD0iTTEuMjUgMy4yNUEuNzUuNzUgMCAwIDEgMiAyLjVoMTJBLjc1Ljc1IDAgMCAxIDE0IDRIMmEuNzUuNzUgMCAwIDEtLjc1LS43NW0wIDQuNzVBLjc1Ljc1IDAgMCAxIDIgNy4yNWgxMmEuNzUuNzUgMCAwIDEgMCAxLjVIMkEuNzUuNzUgMCAwIDEgMS4yNSA4TTIgMTJhLjc1Ljc1IDAgMCAwIDAgMS41aDEyYS43NS43NSAwIDAgMCAwLTEuNXoiIGNsaXAtcnVsZT0iZXZlbm9kZCIvPjwvc3ZnPg=="); }
.gravity-icon--chevron-down { --gravity-icon: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAxNiAxNiI+PHBhdGggZmlsbD0id2hpdGUiIGZpbGwtcnVsZT0iZXZlbm9kZCIgZD0iTTIuOTcgNS40N2EuNzUuNzUgMCAwIDEgMS4wNiAwTDggOS40NGwzLjk3LTMuOTdhLjc1Ljc1IDAgMSAxIDEuMDYgMS4wNmwtNC41IDQuNWEuNzUuNzUgMCAwIDEtMS4wNiAwbC00LjUtNC41YS43NS43NSAwIDAgMSAwLTEuMDYiIGNsaXAtcnVsZT0iZXZlbm9kZCIvPjwvc3ZnPg=="); }
.gravity-icon--check { --gravity-icon: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAxNiAxNiI+PHBhdGggZmlsbD0id2hpdGUiIGZpbGwtcnVsZT0iZXZlbm9kZCIgZD0iTTEzLjQ4OCAzLjQzYS43NS43NSAwIDAgMSAuMDgxIDEuMDU4bC02IDdhLjc1Ljc1IDAgMCAxLTEuMS4wNDJsLTMuNS0zLjVBLjc1Ljc1IDAgMCAxIDQuMDMgNi45N2wyLjkyOCAyLjkyNyA1LjQ3My02LjM4NWEuNzUuNzUgMCAwIDEgMS4wNTctLjA4MSIgY2xpcC1ydWxlPSJldmVub2RkIi8+PC9zdmc+"); }
.header-contact .gravity-icon { margin-left: 8px; color: var(--accent); }

.language-switcher { position: relative; }
.language-switcher summary { list-style: none; cursor: pointer; }
.language-switcher summary::-webkit-details-marker { display: none; }
.language-switcher__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 58px;
  min-height: 48px;
  padding: 0 var(--space-control-y);
  border: 1px solid rgba(255,255,255,.32);
  border-radius: var(--radius-control);
  color: var(--white);
  font-size: var(--font-ui);
  font-weight: 700;
  letter-spacing: .08em;
}
.language-switcher__chevron { width: 16px; height: 16px; flex-basis: 16px; transition: transform .18s ease; }
.language-switcher[open] .language-switcher__chevron { transform: rotate(180deg); }
.language-switcher__panel {
  position: absolute;
  z-index: 8;
  top: calc(100% + 9px);
  right: 0;
  display: grid;
  min-width: 188px;
  padding: 6px 14px;
  border: 1px solid var(--glass-line);
  border-radius: var(--radius-menu);
  background: rgba(var(--night-rgb), .94);
  box-shadow: 0 16px 34px rgba(0,0,0,.24), inset 0 1px 0 rgba(255,255,255,.08);
  -webkit-backdrop-filter: blur(22px) saturate(135%);
  backdrop-filter: blur(22px) saturate(135%);
}
.language-switcher__option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 44px;
  border-bottom: 1px solid rgba(255,255,255,.1);
  color: rgba(255,255,255,.78);
  font-size: var(--font-ui);
  text-decoration: none;
}
.language-switcher__option:last-child { border: 0; }
.language-switcher__option:hover, .language-switcher__option[aria-current="page"] { color: var(--accent); }
.language-switcher__meta { display: flex; align-items: center; gap: 8px; color: rgba(255,255,255,.78); font-size: var(--font-caption); letter-spacing: .05em; }
.language-switcher__option[aria-current="page"] .language-switcher__meta { color: var(--accent); }
.language-switcher__check { width: 16px; height: 16px; flex-basis: 16px; visibility: hidden; }
.language-switcher__option[aria-current="page"] .language-switcher__check { visibility: visible; color: var(--accent); }
.mobile-nav { display: none; }

.hero {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  min-height: max(740px, 100svh);
  overflow: hidden;
  isolation: isolate;
  background: transparent;
  color: var(--white);
}
.hero__image { position: absolute; z-index: -2; inset: 0; overflow: hidden; }
.hero__image picture, .section-art picture, .application__visual picture { display: block; width: 100%; height: 100%; }
.hero__image img { width: 100%; height: 100%; object-fit: cover; object-position: center 55%; -webkit-mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 220px), transparent 100%); mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 220px), transparent 100%); }
.hero::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(var(--night-rgb),1) 0%, rgba(var(--night-rgb),.97) 25%, rgba(var(--night-rgb),.73) 48%, rgba(var(--night-rgb),.1) 100%),
    linear-gradient(0deg, rgba(2,16,28,.82), transparent 205px);
  -webkit-mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 220px), transparent 100%);
  mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 220px), transparent 100%);
  content: "";
}
.hero__inner { display: flex; align-items: flex-start; flex: 1; padding-top: calc(var(--header-flow-height) + var(--hero-header-gap)); padding-bottom: var(--space-panel); }
.hero__copy { position: relative; z-index: 1; width: min(100%, calc(690px - var(--space-grid))); padding: var(--space-panel); border-radius: var(--radius-feature); }
.eyebrow, .overline, .section-kicker, .hero__note, .hero__bottom, .origin__caption, .application__tag {
  text-transform: uppercase;
  letter-spacing: .14em;
}
.eyebrow { display: flex; flex-wrap: wrap; align-items: center; gap: 11px; margin: 0 0 25px; color: var(--aqua); font-size: var(--font-caption); font-weight: 700; }
.eyebrow__dot { width: 7px; height: 7px; flex: 0 0 auto; border-radius: 50%; background: var(--accent); box-shadow: 0 0 16px rgba(145,228,239,.58); }
.eyebrow__divider { color: rgba(255,255,255,.36); }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-weight: 400; }
em { font-style: normal; }
.hero h1 { margin-bottom: 24px; font-family: var(--display); font-size: clamp(53px, 6.1vw, 82px); line-height: .99; letter-spacing: -.047em; }
.hero h1 em, .section-heading h2 em, .contact h2 em { color: var(--aqua); font-weight: 400; }
.hero__lead { max-width: 560px; margin-bottom: 28px; color: rgba(255,255,255,.94); font-size: var(--font-body); line-height: 1.8; }
.hero__lead strong { color: var(--white); font-weight: 650; }
.hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-grid); }
.button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-grid);
  min-height: 50px;
  padding: 0 var(--space-control-x);
  border-radius: var(--radius-control);
  font-size: var(--font-ui);
  font-weight: 700;
  text-decoration: none;
  transition: transform .2s ease, background-color .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button .gravity-icon, .text-link .gravity-icon, .header-contact .gravity-icon { width: 20px; height: 20px; flex-basis: 20px; }
.button--light { background: var(--mint); color: var(--night); }
.button--light:hover { background: var(--white); }
.text-link { display: inline-flex; align-items: center; gap: 12px; width: fit-content; padding-block: var(--space-control-y); font-size: var(--font-ui); font-weight: 700; text-decoration: none; }
.text-link .gravity-icon { color: var(--sea); transition: transform .2s ease; }
.text-link:hover .gravity-icon--arrow-up-right { transform: translate(3px,-3px); }
.text-link--light { color: var(--white); }
.text-link--light .gravity-icon { color: var(--accent); }
.hero__note { margin: 40px 0 0; color: rgba(255,255,255,.88); font-size: var(--font-caption); }
.hero__bottom { display: flex; justify-content: space-between; gap: var(--space-grid); margin-bottom: 18px; padding: var(--space-control-y) var(--space-card); border-radius: var(--radius-panel); color: rgba(255,255,255,.9); font-size: var(--font-caption); }

.section { padding-block: var(--space-section); }
.section-kicker { display: inline-flex; align-items: flex-start; max-width: 100%; color: var(--sea); font-size: var(--font-caption); font-weight: 700; }
.intro { position: relative; display: flex; align-items: center; min-height: clamp(580px, 52vw, 760px); overflow: visible; background: transparent; color: var(--white); }
.intro__inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(120px, .45fr) minmax(0, 1.25fr); gap: var(--space-section-gap); align-items: start; }
.intro__body { max-width: 660px; padding: var(--space-panel); }
.overline { margin-bottom: 16px; color: var(--sea); font-size: var(--font-caption); font-weight: 700; }
.intro h2, .use h2, .contact h2 { margin-bottom: 24px; font-family: var(--display); font-size: clamp(42px, 4.9vw, 66px); line-height: 1.04; letter-spacing: -.045em; }
.intro h2 em { color: var(--aqua); font-weight: 400; }
.use h2 em { color: var(--sea); font-weight: 400; }
.intro .section-kicker { color: var(--aqua); }
.intro .overline { color: var(--aqua); }
.intro__text { max-width: 620px; margin-bottom: 0; color: rgba(255,255,255,.92); font-size: var(--font-body); line-height: 1.8; }

.section-art { --art-mask: linear-gradient(180deg, transparent 0, #000 220px, #000 calc(100% - 440px), transparent 100%); position: absolute; z-index: 0; inset: -220px 0; overflow: hidden; pointer-events: none; }
.section-art img, .section-art::after { -webkit-mask-image: var(--art-mask); mask-image: var(--art-mask); }
.section-art img { width: 100%; height: 100%; object-fit: cover; opacity: .76; filter: brightness(.88) saturate(.9) contrast(1.02); }
.section-art::after { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(var(--night-rgb),.95) 0%, rgba(var(--night-rgb),.85) 42%, rgba(var(--night-rgb),.38) 100%), linear-gradient(180deg, rgba(var(--night-rgb),.18), transparent 42%, rgba(var(--night-rgb),.38)); content: ""; }
.intro .section-art { --art-mask: linear-gradient(180deg, transparent 0, #000 220px, #000 calc(100% - 440px), transparent 100%); inset: -220px 0; }
.section-art--intro img { object-position: 64% center; }
.section-art--intro::after { background: linear-gradient(90deg, rgba(var(--night-rgb),.98) 0%, rgba(var(--night-rgb),.9) 36%, rgba(var(--night-rgb),.28) 100%), linear-gradient(180deg, rgba(var(--night-rgb),.18), transparent 42%, rgba(var(--night-rgb),.35)); }
.section-art--origin img { object-position: 66% center; }
.section-art--video img { object-position: center 52%; }
.section-art--contact img { object-position: 68% center; }
.origin { position: relative; overflow: visible; background: transparent; color: var(--white); }
.origin > .shell { position: relative; z-index: 1; }
.section-heading { display: grid; grid-template-columns: minmax(120px, .45fr) minmax(0, 1.25fr) minmax(200px, .8fr); gap: var(--space-section-gap); align-items: end; margin-bottom: var(--space-section-gap); }
.section-heading__main { padding: var(--space-panel); }
.section-kicker--light { color: var(--aqua); }
.overline--light { color: var(--aqua); }
.section-heading h2 { margin-bottom: 0; font-family: var(--display); font-size: clamp(46px, 5.3vw, 72px); line-height: .99; letter-spacing: -.045em; }
.section-heading__aside { max-width: 340px; justify-self: end; margin: 0; padding: var(--space-card); color: rgba(255,255,255,.92); font-size: var(--font-copy); line-height: 1.8; }
.steps { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-grid); }
.step-card { position: relative; display: flex; flex-direction: column; justify-content: center; min-height: 250px; padding: var(--space-card); border-color: var(--glass-line); border-radius: var(--radius-panel); }
.step-card h3 { margin: 0 0 10px; color: var(--white); font-size: 18px; font-weight: 600; }
.step-card p { max-width: 330px; margin: 0; color: rgba(255,255,255,.9); font-size: var(--font-copy); line-height: 1.8; }
.step-card--accent { border-color: rgba(145,228,239,.38); background: linear-gradient(135deg, rgba(24,127,146,.15), rgba(var(--night-rgb),.68)); }
.origin__caption { position: relative; margin: 21px 0 0; color: rgba(255,255,255,.9); font-size: var(--font-caption); }
.origin__caption span { margin-right: 8px; color: var(--accent); font-size: 15px; }

.use { position: relative; overflow: visible; background: transparent; color: var(--white); }
.use__inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(120px, .45fr) minmax(0, 2.05fr); column-gap: var(--space-section-gap); row-gap: var(--space-section-gap); }
.use .section-kicker { color: var(--aqua); }
.use .overline { color: var(--aqua); }
.use h2 em { color: var(--aqua); }
.use__heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(180px, .48fr); column-gap: var(--space-grid); align-items: end; padding: var(--space-panel); }
.use__heading .overline { grid-column: 1 / -1; }
.use h2 { margin-bottom: 0; }
.use__heading > p:last-child { max-width: 340px; margin: 0 0 5px; color: rgba(255,255,255,.9); font-size: var(--font-copy); line-height: 1.8; }
.applications { grid-column: 2; display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-grid); }
.application { display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--glass-line); border-radius: var(--radius-panel); background: linear-gradient(155deg, rgba(var(--ocean-rgb),.94), rgba(var(--night-rgb),.96)); box-shadow: 0 22px 50px rgba(0,10,17,.28), inset 0 1px 0 var(--glass-highlight); -webkit-backdrop-filter: blur(18px) saturate(125%); backdrop-filter: blur(18px) saturate(125%); transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease; }
.application:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: 0 28px 60px rgba(0,10,17,.34), inset 0 1px 0 rgba(211,243,247,.18); }
.application__top { display: flex; align-items: center; justify-content: flex-start; min-height: 43px; padding-inline: var(--space-card); border-bottom: 1px solid rgba(184,226,236,.14); background: rgba(var(--night-rgb),.42); }
.application__tag { color: rgba(235,247,249,.82); font-size: var(--font-caption); font-weight: 700; }
.application__visual { display: block; width: 100%; aspect-ratio: 3 / 2; overflow: hidden; margin: 0; }
.application__visual img { width: 100%; height: 100%; object-fit: contain; }
.application__visual--hitabs, .application__visual--industry { background: var(--night); }
.application__copy { flex: 1; padding: var(--space-card); background: linear-gradient(180deg, rgba(var(--ocean-rgb),.9), rgba(var(--night-rgb),.97)); color: var(--white); }
.application__copy .overline { margin-bottom: 10px; color: var(--aqua); font-size: var(--font-caption); }
.application__copy h3 { margin-bottom: 9px; font-family: var(--display); font-size: clamp(20px, 2vw, 24px); font-weight: 400; line-height: 1.15; letter-spacing: -.025em; }
.application__copy > p:not(.overline) { max-width: 410px; margin-bottom: 18px; color: rgba(235,247,249,.84); font-size: var(--font-copy); line-height: 1.75; }
.application__copy .text-link { color: var(--aqua); font-size: var(--font-ui); }
.application__copy .text-link .gravity-icon { color: var(--accent); }

.section-art--use { --art-mask: linear-gradient(180deg, transparent 0, #000 220px, #000 calc(100% - 440px), transparent 100%); inset: -220px 0; }
.section-art--use img { object-position: 66% center; }
.section-art--use::after { background: linear-gradient(90deg, rgba(var(--night-rgb),.96) 0%, rgba(var(--night-rgb),.84) 45%, rgba(var(--night-rgb),.42) 100%), linear-gradient(180deg, rgba(var(--night-rgb),.18), transparent 42%, rgba(var(--night-rgb),.38)); }
.video-section { position: relative; overflow: visible; margin-top: 0; padding-top: var(--space-section); background: transparent; color: var(--white); }
.video-section__inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(150px, .55fr) minmax(0, 1.45fr); gap: var(--space-section-gap); align-items: center; }
.video-section__copy { max-width: 440px; padding: var(--space-panel); }
.video-section__copy .overline { margin-bottom: 15px; }
.video-section__copy h2 { margin: 0; font-family: var(--display); font-size: clamp(34px, 4.1vw, 56px); line-height: 1.05; letter-spacing: -.04em; }
.video-frame { width: 100%; aspect-ratio: 16 / 9; overflow: hidden; border: 1px solid var(--glass-line); border-radius: var(--radius-panel); background: var(--night); box-shadow: 0 24px 60px rgba(0,0,0,.3); }
.video-frame iframe { display: block; width: 100%; height: 100%; border: 0; }

.contact { position: relative; overflow: visible; background: transparent; color: var(--white); }
.contact__inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(120px, .45fr) minmax(0, 1.25fr) minmax(160px, .8fr); gap: var(--space-section-gap); }
.contact__body { max-width: 690px; padding: var(--space-panel); }
.contact h2 { margin-bottom: 18px; font-size: clamp(46px, 4.8vw, 64px); overflow-wrap: anywhere; }
.contact__body > p:not(.overline) { max-width: 480px; margin-bottom: 23px; color: rgba(255,255,255,.92); font-size: var(--font-copy); line-height: 1.8; }
.button--accent { background: var(--accent); color: var(--night); }
.button--accent:hover { background: #c9f1f4; }
.contact__aside { align-self: end; padding: var(--space-card); color: rgba(255,255,255,.94); font-size: var(--font-ui); }
.contact__aside img { width: 48px; height: 48px; margin-bottom: 17px; }
.contact__aside p { margin-bottom: 11px; color: var(--white); line-height: 1.65; }
.contact__aside a { display: block; margin-bottom: 11px; color: var(--aqua); text-decoration: none; }
.contact__aside span { color: rgba(255,255,255,.86); font-size: var(--font-caption); line-height: 1.7; }

.site-footer { position: relative; z-index: 1; isolation: isolate; background: transparent; color: rgba(255,255,255,.82); }
.site-footer__inner { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: var(--space-grid); min-height: 112px; margin-block: 16px; padding: var(--space-card); border-radius: var(--radius-panel); }
.brand--footer { min-width: 0; color: var(--white); }
.brand--footer .brand__mark { width: 36px; height: 36px; }
.brand--footer .brand__name { font-size: var(--font-caption); }
.site-footer p, .site-footer small { margin: 0; font-size: var(--font-caption); line-height: 1.6; }
.site-footer p { white-space: nowrap; }

.back-to-top {
  position: fixed;
  z-index: 45;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  padding: 0;
  border-radius: var(--radius-control);
  color: var(--white);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .2s ease, visibility .2s ease, transform .2s ease, background .2s ease;
}
.back-to-top .gravity-icon { width: 21px; height: 21px; color: var(--accent); }
.back-to-top:hover { background: linear-gradient(135deg, var(--glass-highlight), rgba(var(--night-rgb),.5)); }
.back-to-top:focus-visible { outline-offset: 4px; }
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }

.error-page { display: grid; place-items: center; min-height: 100svh; padding-block: var(--space-section); background: radial-gradient(ellipse at 78% 55%, rgba(24,127,146,.28), transparent 45%), var(--night); color: var(--white); }
.error-page__inner { max-width: 850px; }
.error-page h1 { margin-bottom: 19px; font-family: var(--display); font-size: clamp(56px, 8vw, 96px); line-height: .98; letter-spacing: -.05em; }
.error-page__inner > p:not(.eyebrow) { max-width: 520px; margin-bottom: 25px; color: rgba(255,255,255,.8); font-size: var(--font-body); line-height: 1.8; }
.site-header--error .site-header__inner { width: min(100% - (var(--gutter) * 2), var(--page-width)); }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }

@media (max-width: 1000px) {
  :root { --gutter: clamp(24px, 5vw, 50px); }
  .site-header__inner { gap: 15px; }
  .brand { min-width: 170px; }
  .desktop-nav { gap: 18px; }
  .desktop-nav a { font-size: var(--font-ui); }
  .header-contact { padding-inline: var(--space-control-y); font-size: var(--font-ui); }
  .language-switcher__toggle { min-width: 52px; }
  .hero__copy { width: min(100%, calc(650px - var(--space-grid))); }
  .intro__inner, .section-heading, .contact__inner { grid-template-columns: minmax(100px, .42fr) minmax(0, 1.5fr); column-gap: var(--space-section-gap); }
  .section-heading__aside { grid-column: 2; justify-self: start; max-width: 400px; margin-top: 20px; }
  .use__inner { grid-template-columns: minmax(100px, .42fr) minmax(0, 1.5fr); column-gap: var(--space-section-gap); }
  .use__heading { grid-template-columns: 1fr; }
  .use__heading > p:last-child { margin-top: 17px; }
  .applications { gap: var(--space-grid); }
  .contact__aside { grid-column: 2; display: grid; grid-template-columns: auto minmax(0, 1fr); column-gap: var(--space-grid); align-items: center; max-width: 420px; margin-top: var(--space-control-y); }
  .contact__aside img { grid-row: span 3; margin: 0; }
}

@media (max-width: 920px) {
  :root { --header-flow-height: 84px; }
  .site-header__inner { min-height: 100%; }
  .brand { gap: 8px; min-width: 0; }
  .brand__mark { width: 36px; height: 36px; }
  .desktop-nav, .header-contact { display: none; }
  .site-header__tools { margin-left: auto; }
  .language-switcher__toggle { min-width: 54px; min-height: 44px; }
  .language-switcher__panel { min-width: 170px; }
  .mobile-nav { position: relative; display: block; }
  .mobile-nav summary {
    display: grid;
    place-items: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 0;
    background: none;
    color: var(--white);
    cursor: pointer;
    list-style: none;
  }
  .mobile-nav summary::-webkit-details-marker { display: none; }
  .mobile-nav nav {
    position: absolute;
    top: calc(100% + 11px);
    right: 0;
    display: grid;
    width: min(260px, calc(100vw - 44px));
    padding: var(--space-control-y) var(--space-card);
    border: 1px solid var(--glass-line);
    border-radius: var(--radius-menu);
    background: rgba(var(--night-rgb),.94);
    box-shadow: 0 17px 36px rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.08);
    -webkit-backdrop-filter: blur(22px) saturate(135%);
    backdrop-filter: blur(22px) saturate(135%);
  }
  .mobile-nav nav a { padding-block: var(--space-control-y); border-bottom: 1px solid rgba(255,255,255,.18); color: var(--white); font-size: var(--font-ui); font-weight: 600; text-decoration: none; }
  .mobile-nav nav a:last-child { border: 0; color: var(--accent); }
}

@media (max-width: 720px) {
  :root {
    --gutter: max(18px, env(safe-area-inset-left, 0px), env(safe-area-inset-right, 0px));
    --hero-header-gap: 40px;
    --space-section-mobile: clamp(48px, 9vw, 64px);
    --space-panel: clamp(20px, 4vw, 28px);
    --space-card: clamp(18px, 3vw, 22px);
    --space-section-gap: clamp(20px, 4vw, 28px);
    --space-grid: clamp(12px, 2.5vw, 16px);
  }
  html { scroll-padding-top: 96px; }
  .site-header__inner .brand { flex-shrink: 0; }
  .brand__name { font-size: var(--font-caption); }
  .hero { min-height: min(880px, max(720px, 100svh)); }
  .hero__image img { object-position: center; }
  .hero::before {
    background:
      linear-gradient(90deg, rgba(var(--night-rgb),.98) 0%, rgba(var(--night-rgb),.87) 48%, rgba(var(--night-rgb),.31) 100%),
      linear-gradient(0deg, rgba(2,16,28,.87), rgba(2,16,28,.08) 70%);
  }
  .hero__inner { align-items: flex-start; padding-top: calc(var(--header-flow-height) + var(--hero-header-gap)); padding-bottom: var(--space-card); }
  .hero__copy { width: min(100%, 590px); padding: var(--space-card); border-radius: var(--radius-feature); }
  .eyebrow { gap: 9px; margin-bottom: 20px; font-size: var(--font-caption); }
  .hero h1 { margin-bottom: 20px; font-size: clamp(36px, 10vw, 60px); }
  .hero__lead { max-width: 470px; margin-bottom: 24px; font-size: var(--font-copy); }
  .hero__actions { gap: var(--space-grid); }
  .button { min-height: 48px; padding-inline: var(--space-control-x); font-size: var(--font-ui); }
  .text-link--light { font-size: var(--font-ui); }
  .hero__note { margin-top: 28px; font-size: var(--font-caption); }
  .hero__bottom { display: grid; grid-template-columns: 1fr 1fr; row-gap: 10px; padding-block: var(--space-control-y); font-size: var(--font-caption); }
  .hero__bottom span:last-child { grid-column: 1 / -1; }
  .section { padding-block: var(--space-section-mobile); }
  .intro { min-height: 0; }
  .video-section { margin-top: 0; padding-top: var(--space-section-mobile); }
  .section-art { --art-mask: linear-gradient(180deg, transparent 0, #000 130px, #000 calc(100% - 260px), transparent 100%); inset: -130px 0; }
  .intro .section-art { --art-mask: linear-gradient(180deg, transparent 0, #000 130px, #000 calc(100% - 260px), transparent 100%); inset: -130px 0; }
  .section-art--use { --art-mask: linear-gradient(180deg, transparent 0, #000 130px, #000 calc(100% - 260px), transparent 100%); inset: -130px 0; }
  .section-art img { object-position: center; }
  .section-art--intro::after { background: linear-gradient(90deg, rgba(var(--night-rgb),.96) 0%, rgba(var(--night-rgb),.86) 62%, rgba(var(--night-rgb),.54) 100%), linear-gradient(180deg, rgba(var(--night-rgb),.24), transparent 38%, rgba(var(--night-rgb),.38)); }
  .intro__inner, .section-heading, .use__inner, .contact__inner { grid-template-columns: 1fr; gap: var(--space-section-gap); }
  .section-kicker { font-size: var(--font-caption); }
  .intro__body, .section-heading > div:nth-child(2), .section-heading__aside, .use__heading, .applications, .contact__body, .contact__aside { grid-column: 1; }
  .intro h2, .use h2 { font-size: clamp(42px, 10.5vw, 59px); }
  .intro__text { font-size: var(--font-copy); }
  .section-heading { align-items: start; margin-bottom: var(--space-section-gap); }
  .section-heading > div:nth-child(2) { margin-top: 0; }
  .section-heading h2 { font-size: clamp(39px, 10vw, 60px); }
  .section-heading__aside { margin-top: 0; font-size: var(--font-copy); }
  .steps { grid-template-columns: 1fr; }
  .step-card { min-height: 0; padding: var(--space-card); }
  .step-card h3 { margin: 0 0 7px; font-size: 18px; }
  .step-card p { max-width: 410px; font-size: var(--font-copy); }
  .origin__caption { font-size: var(--font-caption); line-height: 1.7; }
  .use__inner { row-gap: var(--space-section-gap); }
  .use__heading { grid-column: 1; grid-template-columns: minmax(0, 1fr); }
  .use__heading .overline { margin-bottom: 12px; }
  .use__heading > p:last-child { max-width: 410px; margin-top: 15px; font-size: var(--font-copy); }
  .applications { grid-template-columns: 1fr; gap: var(--space-grid); }
  .application__copy { padding: var(--space-card); }
  .application__copy h3 { font-size: 22px; }
  .application__copy > p:not(.overline) { font-size: var(--font-copy); }
  .contact__inner { gap: var(--space-section-gap); }
  .contact h2 { font-size: clamp(38px, 11vw, 52px); }
  .contact__body > p:not(.overline) { font-size: var(--font-copy); }
  .contact__aside { margin: 0; }
  .video-section__inner { grid-template-columns: 1fr; gap: var(--space-section-gap); }
  .video-section__copy h2 { font-size: clamp(36px, 9vw, 52px); }
  .site-footer__inner { grid-template-columns: minmax(0, 1fr); gap: var(--space-grid); padding-block: var(--space-card); }
  .site-footer p { white-space: normal; }
  .site-footer small { justify-self: start; }
  .error-page { padding-block: var(--space-section-mobile); }
  .error-page h1 { font-size: clamp(50px, 12vw, 74px); }
}

@media (max-width: 360px) {
  :root { --gutter: max(16px, env(safe-area-inset-left, 0px), env(safe-area-inset-right, 0px)); }
  .site-header__inner { gap: 8px; }
  .site-header__tools { gap: 8px; }
  .hero h1 { font-size: clamp(27px, 9.2vw, 33px); }
  .brand__name { font-size: 10px; letter-spacing: .1em; }
  .brand__name span { letter-spacing: .12em; }
  .brand--footer .brand__name { font-size: 10px; letter-spacing: .1em; }
  .brand--footer .brand__name span { letter-spacing: .12em; }
  .site-footer__inner { grid-template-columns: minmax(0, 1fr); }
  .site-footer p { grid-row: auto; }
  .site-footer small { grid-area: auto; justify-self: start; }
  .back-to-top { right: max(14px, env(safe-area-inset-right)); bottom: max(14px, env(safe-area-inset-bottom)); width: 52px; height: 52px; }
  .hero__actions { gap: 12px; }
  .button { gap: 12px; }
  .intro h2, .use h2 { font-size: 42px; }
}

@media (max-width: 520px) {
  .hero__bottom { grid-template-columns: 1fr; gap: 8px; line-height: 1.45; }
  .hero__bottom span:last-child { grid-column: auto; }
  .hero__actions { align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

@supports not (backdrop-filter: blur(1px)) {
  .glass-panel { background: linear-gradient(135deg, rgba(var(--ocean-rgb),.96), rgba(var(--night-rgb),.96)); }
  .application { background: linear-gradient(155deg, rgba(var(--ocean-rgb),.98), rgba(var(--night-rgb),.99)); }
  .language-switcher__panel, .mobile-nav nav { background: rgba(var(--night-rgb),.98); }
}