:root {
  --ink: #07101d;
  --ink-soft: #0d1a2b;
  --paper: #f2f0ea;
  --white: #fbfaf7;
  --blue: #3158ff;
  --cyan: #63d5ff;
  --orange: #f06a32;
  --line-dark: rgba(255,255,255,.15);
  --line-light: rgba(7,16,29,.16);
  --max: 1440px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--white);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Inter, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
body, button, a { font: inherit; }
img { display: block; width: 100%; }
a { color: inherit; text-decoration: none; }
button { color: inherit; }

.skip-link {
  position: fixed; z-index: 200; top: 10px; left: 10px;
  padding: 10px 14px; background: var(--white); color: var(--ink);
  transform: translateY(-160%); transition: transform .2s;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed; z-index: 100; inset: 0 0 auto;
  height: 82px; padding: 0 clamp(22px, 4vw, 72px);
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  background: rgba(7,16,29,.92);
  border-bottom: 1px solid rgba(255,255,255,.12);
  backdrop-filter: blur(14px);
}
.brand { display: inline-flex; align-items: center; gap: 13px; width: max-content; }
.brand-mark { display: grid; grid-template-columns: repeat(2, 12px); gap: 3px; transform: skewX(-12deg); }
.brand-mark i { width: 12px; height: 26px; border: 2px solid var(--cyan); }
.brand-mark i:last-child { background: var(--orange); border-color: var(--orange); }
.brand-word { display: flex; flex-direction: column; line-height: 1; letter-spacing: .08em; }
.brand-word strong { font-size: 18px; }
.brand-word small { margin-top: 6px; color: rgba(255,255,255,.6); font-size: 10px; letter-spacing: .32em; }
.primary-nav { display: flex; align-items: center; gap: clamp(22px, 3vw, 46px); }
.primary-nav a { color: rgba(255,255,255,.72); font-size: 14px; transition: color .2s; }
.primary-nav a:hover, .primary-nav a:focus-visible { color: #fff; }
.lang-switch { justify-self: end; display: flex; align-items: center; gap: 7px; font-size: 13px; color: rgba(255,255,255,.35); }
.lang-switch button { padding: 7px 3px; border: 0; background: none; color: rgba(255,255,255,.45); cursor: pointer; }
.lang-switch button.active { color: var(--cyan); }
.lang-switch button:focus-visible, a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 4px; }

.hero {
  position: relative; min-height: 860px; height: min(100vh, 980px); padding-top: 82px;
  display: grid; grid-template-columns: minmax(410px, 45%) 1fr; overflow: hidden;
  background: var(--ink);
}
.hero-grid {
  position: absolute; inset: 82px 0 0; opacity: .34; pointer-events: none;
  background-image:
    linear-gradient(rgba(99,213,255,.11) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,213,255,.11) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(90deg, #000, transparent 75%);
}
.hero-copy {
  position: relative; z-index: 2; align-self: center;
  padding: 50px 6vw 120px clamp(28px, 6vw, 104px);
}
.eyebrow, .section-label {
  margin: 0 0 22px; color: var(--cyan); font-size: 12px; font-weight: 700;
  letter-spacing: .2em; text-transform: uppercase;
}
.hero h1 {
  margin: 0; max-width: 720px; font-size: clamp(48px, 5.2vw, 84px);
  line-height: 1.08; letter-spacing: -.055em; font-weight: 650;
}
.hero h1 span, .hero h1 em { display: block; }
.hero h1 em { color: var(--orange); font-style: normal; }
.hero-lead { max-width: 610px; margin: 30px 0 0; color: rgba(255,255,255,.68); font-size: clamp(17px, 1.4vw, 21px); }
.hero-actions { display: flex; gap: 12px; margin-top: 42px; flex-wrap: wrap; }
.button {
  min-height: 52px; padding: 0 20px; display: inline-flex; align-items: center; justify-content: center; gap: 34px;
  border: 1px solid rgba(255,255,255,.28); font-size: 14px; font-weight: 650; transition: .2s ease;
}
.button-primary { background: var(--orange); border-color: var(--orange); color: #fff; }
.button-primary:hover { background: #ff7a42; }
.button-ghost:hover { background: #fff; color: var(--ink); }
.hero-visual { position: relative; min-width: 0; border-left: 1px solid var(--line-dark); overflow: hidden; }
.hero-visual::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(90deg, var(--ink) 0%, transparent 28%), linear-gradient(0deg, var(--ink) 0%, transparent 28%);
}
.hero-visual img { height: 100%; object-fit: cover; object-position: 53% 48%; transform: scale(1.05); }
.hero-label {
  position: absolute; z-index: 3; right: 5vw; top: 13%; padding: 10px 0 10px 18px;
  display: flex; gap: 14px; align-items: center; border-left: 2px solid var(--orange);
}
.hero-label > span { color: rgba(255,255,255,.45); font-size: 12px; }
.hero-label p { margin: 0; display: flex; flex-direction: column; line-height: 1.2; }
.hero-label strong { font-size: 13px; letter-spacing: .14em; }
.hero-label small { margin-top: 7px; color: rgba(255,255,255,.6); }
.hero-index {
  position: absolute; z-index: 4; left: 0; bottom: 0; width: 45%; min-width: 410px;
  display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line-dark);
}
.hero-index a {
  padding: 20px clamp(18px, 3vw, 42px); display: flex; align-items: center; gap: 14px;
  background: rgba(7,16,29,.85); border-right: 1px solid var(--line-dark);
}
.hero-index span { color: var(--orange); font-size: 12px; }
.hero-index b { font-size: 13px; font-weight: 500; }

.intro {
  min-height: 520px; padding: 100px clamp(28px, 6vw, 100px);
  display: grid; grid-template-columns: minmax(210px, .6fr) 2fr; gap: 7vw;
  background: var(--paper); color: var(--ink); align-items: start;
}
.section-kicker { display: flex; gap: 18px; align-items: center; border-top: 1px solid var(--ink); padding-top: 16px; }
.section-kicker span { color: var(--orange); font-size: 12px; }
.section-kicker p { margin: 0; font-size: 12px; font-weight: 700; letter-spacing: .14em; }
.intro-statement h2 {
  max-width: 1050px; margin: -14px 0 32px; font-size: clamp(42px, 5.6vw, 82px);
  line-height: 1.12; letter-spacing: -.05em; font-weight: 600;
}
.intro-statement p { max-width: 760px; margin: 0; color: rgba(7,16,29,.66); font-size: 19px; }

.product {
  min-height: 920px; display: grid; grid-template-columns: 52% 48%;
  border-top: 1px solid var(--line-dark);
}
.product-dark { background: var(--ink-soft); }
.product-light { background: var(--white); color: var(--ink); grid-template-columns: 46% 54%; }
.product-media { position: relative; min-height: 720px; overflow: hidden; }
.product-media > img { height: 100%; object-fit: cover; }
.product-dark .product-media > img { object-position: 50% 50%; }
.product-light .product-media > img { object-position: center 72%; }
.media-caption {
  position: absolute; inset: auto 0 0; min-height: 96px; padding: 18px 28px;
  display: flex; flex-direction: column; justify-content: center;
  background: rgba(7,16,29,.88); color: #fff; border-top: 1px solid rgba(255,255,255,.2);
  z-index: 3;
}
.media-caption span { color: var(--cyan); font-size: 10px; letter-spacing: .18em; }
.media-caption strong { margin-top: 5px; font-size: 14px; font-weight: 500; }
.product-copy {
  position: relative; padding: clamp(70px, 8vw, 130px) clamp(36px, 7vw, 112px);
  display: flex; flex-direction: column; justify-content: center;
}
.product-number {
  position: absolute; right: 6vw; top: 54px; color: rgba(255,255,255,.13);
  font-size: clamp(100px, 12vw, 190px); line-height: .8; font-weight: 700; letter-spacing: -.08em;
}
.product-light .product-number { color: rgba(7,16,29,.07); }
.product-copy h2 { position: relative; margin: 0; max-width: 600px; font-size: clamp(42px, 4.6vw, 70px); line-height: 1.12; letter-spacing: -.045em; }
.product-lead { position: relative; max-width: 640px; margin: 28px 0 42px; color: rgba(255,255,255,.64); font-size: 19px; }
.product-light .product-lead { color: rgba(7,16,29,.62); }
.spec-list { margin: 0; border-top: 1px solid var(--line-dark); }
.product-light .spec-list { border-color: var(--line-light); }
.spec-list > div { padding: 18px 0; display: grid; grid-template-columns: 96px 1fr; gap: 24px; border-bottom: 1px solid var(--line-dark); }
.product-light .spec-list > div { border-color: var(--line-light); }
.spec-list dt { color: var(--cyan); font-size: 12px; font-weight: 700; }
.product-light .spec-list dt { color: #2755df; }
.spec-list dd { margin: 0; color: rgba(255,255,255,.76); }
.product-light .spec-list dd { color: rgba(7,16,29,.76); }
.use-cases { margin-top: 34px; display: flex; gap: 0; flex-wrap: wrap; }
.use-cases span { padding: 7px 14px; border-left: 1px solid currentColor; color: var(--orange); font-size: 13px; font-weight: 700; }
.robot-media {
  display: grid;
  grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
  grid-template-rows: minmax(0, 1fr) 96px;
  gap: 1px;
  padding: 24px 24px 0;
  background: #cfd6da;
}
.robot-media::after { content: ""; position: absolute; inset: 0; box-shadow: inset 0 0 100px rgba(7,16,29,.11); pointer-events: none; z-index: 2; }
.robot-media > img {
  grid-column: 2;
  grid-row: 1;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  object-fit: contain;
  object-position: center 66%;
  background: #dce1e3;
}
.robot-inset {
  position: relative;
  z-index: 1;
  grid-column: 1;
  grid-row: 1;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  padding: 26px 18px 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #f5f5f3;
  border: 0;
  box-shadow: none;
}
.robot-inset img { width: 100%; height: 100%; object-fit: contain; }
.robot-inset span {
  position: absolute;
  left: 18px;
  bottom: 18px;
  color: #24435e;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .16em;
}
.robot-media .media-caption {
  position: relative;
  inset: auto;
  grid-column: 1 / -1;
  grid-row: 2;
  margin: 0 -24px;
}

.capabilities { padding: 110px clamp(28px, 6vw, 100px) 130px; background: #0a2348; }
.capabilities-heading { display: grid; grid-template-columns: 1fr 2fr; gap: 8vw; align-items: start; }
.capabilities-heading h2 { margin: -14px 0 70px; max-width: 900px; font-size: clamp(40px, 5vw, 76px); line-height: 1.12; letter-spacing: -.05em; }
.capability-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-dark); }
.capability-list li {
  min-height: 122px; display: grid; grid-template-columns: 80px 1fr; align-items: center;
  border-bottom: 1px solid var(--line-dark); transition: background .2s, padding .2s;
}
.capability-list li:hover { padding-left: 18px; background: rgba(255,255,255,.035); }
.capability-list li > span { color: var(--orange); font-size: 12px; }
.capability-list h3 { margin: 0; font-size: 24px; font-weight: 600; }
.capability-list p { margin: 4px 0 0; color: rgba(255,255,255,.58); }

.about { min-height: 780px; display: grid; grid-template-columns: 48% 52%; background: var(--paper); color: var(--ink); }
.about-image { min-height: 680px; overflow: hidden; }
.about-image img { height: 100%; object-fit: cover; }
.about-copy { padding: clamp(70px, 8vw, 130px) clamp(36px, 7vw, 112px); display: flex; flex-direction: column; justify-content: center; }
.about-copy .section-label { color: #2755df; }
.about-copy h2 { margin: 0 0 36px; font-size: clamp(40px, 4.7vw, 72px); line-height: 1.12; letter-spacing: -.05em; }
.about-copy > p:not(.section-label) { max-width: 680px; margin: 0 0 18px; color: rgba(7,16,29,.67); font-size: 18px; }
.about-tags { margin-top: 34px; display: flex; flex-wrap: wrap; border-top: 1px solid var(--line-light); }
.about-tags span { padding: 14px 22px 14px 0; margin-right: 22px; color: #2755df; font-size: 13px; font-weight: 700; }

.contact { padding: 120px clamp(28px, 7vw, 112px) 70px; background: var(--orange); color: #fff; }
.contact .section-label { color: #fff; opacity: .75; }
.contact h2 { max-width: 1200px; margin: 0 0 70px; font-size: clamp(44px, 6.2vw, 94px); line-height: 1.08; letter-spacing: -.055em; }
.contact-email {
  width: 100%; padding: 22px 0 18px; display: flex; justify-content: space-between; align-items: center;
  border-top: 2px solid #fff; border-bottom: 1px solid rgba(255,255,255,.5);
  font-size: clamp(22px, 3vw, 44px); font-weight: 600; letter-spacing: -.025em;
}
.contact-email:hover span { transform: translate(5px,-5px); }
.contact-email span { transition: transform .2s; }
.contact-meta { margin-top: 62px; display: flex; gap: clamp(48px, 8vw, 120px); }
.contact-meta p { margin: 0; display: flex; flex-direction: column; }
.contact-meta p:first-child { min-width: min(620px, 60vw); }
.contact-meta span { font-size: 10px; letter-spacing: .18em; opacity: .7; }
.contact-meta strong { margin-top: 6px; font-size: 14px; font-weight: 600; line-height: 1.6; }

footer {
  min-height: 150px; padding: 36px clamp(28px, 6vw, 100px); display: grid; grid-template-columns: 1fr auto 1fr;
  gap: 30px; align-items: center; background: var(--ink); border-top: 1px solid var(--line-dark);
}
footer p { margin: 0; color: rgba(255,255,255,.46); font-size: 12px; }
footer > a { justify-self: end; color: rgba(255,255,255,.7); font-size: 12px; }

@media (max-width: 980px) {
  .site-header { grid-template-columns: 1fr auto; height: 72px; }
  .primary-nav { display: none; }
  .hero { height: auto; min-height: 840px; padding-top: 72px; grid-template-columns: 1fr; grid-template-rows: 470px 430px; }
  .hero-copy { grid-row: 1; padding: 64px 28px 90px; }
  .hero h1 { max-width: 750px; }
  .hero-visual { grid-row: 2; border-left: 0; border-top: 1px solid var(--line-dark); }
  .hero-index { width: 100%; min-width: 0; }
  .intro { grid-template-columns: 1fr; gap: 48px; }
  .product, .product-light { min-height: 0; grid-template-columns: 1fr; }
  .product-media { min-height: 600px; }
  .product-copy { min-height: 760px; }
  .product-light .product-copy { order: 2; }
  .product-light .product-media { order: 1; }
  .robot-media {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
    grid-template-rows: minmax(0, 1fr) 96px;
  }
  .capabilities-heading { grid-template-columns: 1fr; gap: 34px; }
  .about { grid-template-columns: 1fr; }
  .about-image { min-height: 520px; }
  footer { grid-template-columns: 1fr 1fr; }
  footer p { order: 3; grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  .site-header { padding-inline: 18px; }
  .brand-word strong { font-size: 15px; }
  .brand-word small { letter-spacing: .18em; }
  .hero { min-height: 790px; grid-template-rows: 500px 290px; }
  .hero-copy { padding: 54px 22px 78px; }
  .hero h1 { font-size: 44px; }
  .hero-lead { margin-top: 22px; font-size: 16px; }
  .hero-actions { margin-top: 28px; }
  .button { width: 100%; justify-content: space-between; }
  .hero-label { top: 30px; right: 22px; }
  .hero-index a { padding: 16px 18px; }
  .intro { min-height: auto; padding: 72px 22px 82px; }
  .intro-statement h2 { font-size: 40px; }
  .intro-statement p { font-size: 17px; }
  .product-media { min-height: 460px; }
  .product-copy { min-height: 0; padding: 78px 22px; }
  .product-number { top: 32px; right: 24px; font-size: 110px; }
  .product-copy h2 { font-size: 42px; }
  .product-lead { font-size: 17px; }
  .spec-list > div { grid-template-columns: 78px 1fr; gap: 16px; }
  .robot-media {
    min-height: 720px;
    padding: 14px 14px 0;
    grid-template-columns: 1fr;
    grid-template-rows: 250px 374px 82px;
  }
  .robot-media > img {
    grid-column: 1;
    grid-row: 2;
    object-position: center 63%;
  }
  .robot-inset {
    grid-column: 1;
    grid-row: 1;
    padding: 14px 14px 42px;
  }
  .robot-inset span { left: 14px; bottom: 12px; }
  .robot-media .media-caption {
    grid-column: 1;
    grid-row: 3;
    min-height: 82px;
    margin: 0 -14px;
    padding: 13px 22px;
  }
  .capabilities { padding: 76px 22px 88px; }
  .capabilities-heading h2 { margin-bottom: 40px; font-size: 40px; }
  .capability-list li { grid-template-columns: 48px 1fr; padding: 22px 0; }
  .capability-list h3 { font-size: 20px; }
  .capability-list p { font-size: 14px; }
  .about-image { min-height: 360px; }
  .about-copy { padding: 72px 22px; }
  .about-copy h2 { font-size: 40px; }
  .about-copy > p:not(.section-label) { font-size: 16px; }
  .contact { padding: 78px 22px 52px; }
  .contact h2 { margin-bottom: 48px; font-size: 43px; }
  .contact-email { font-size: 21px; }
  .contact-meta { margin-top: 46px; gap: 28px; flex-wrap: wrap; }
  .contact-meta p:first-child { min-width: 100%; }
  footer { padding: 32px 22px; }
}

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