:root {
  color-scheme: dark;
  --bg: #05080d;
  --bg-2: #090909;
  --surface: rgba(18, 28, 42, 0.72);
  --surface-strong: rgba(21, 34, 52, 0.92);
  --line: rgba(245, 245, 245, 0.18);
  --line-strong: rgba(245, 245, 245, 0.48);
  --text: #f2f7ff;
  --muted: #b7bdc6;
  --soft: #7d838c;
  --accent: #f1f6ff;
  --accent-strong: #ffffff;
  --cyan: #9bdcff;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.52);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 78% 10%, rgba(255, 255, 255, 0.1), transparent 32%),
    radial-gradient(circle at 18% 58%, rgba(93, 178, 255, 0.08), transparent 34%),
    linear-gradient(180deg, #010306 0%, #05070a 46%, #010204 100%);
  color: var(--text);
  font-family:
    "Microsoft YaHei",
    "PingFang SC",
    "Noto Sans CJK SC",
    Arial,
    sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.site-shell {
  min-height: 100vh;
  overflow: hidden;
  background-image:
    linear-gradient(rgba(245, 245, 245, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 245, 245, 0.035) 1px, transparent 1px);
  background-size: 128px 128px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 220px 1fr auto;
  align-items: center;
  width: 100%;
  padding: 22px clamp(22px, 5vw, 64px);
  border-bottom: 1px solid rgba(120, 167, 215, 0.16);
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.96) 0 230px, rgba(8, 15, 24, 0.82) 230px 100%);
  transition:
    padding 180ms ease,
    background 180ms ease;
}

.site-header > .header-action {
  grid-column: 3;
  justify-self: end;
}

.site-header > .nav-links {
  grid-column: 2;
}

.site-header.is-scrolled {
  padding-top: 14px;
  padding-bottom: 14px;
  background: rgba(6, 12, 20, 0.94);
}

.brand img {
  width: 172px;
  height: auto;
}

.nav-links,
.site-footer nav {
  display: flex;
  justify-content: center;
  gap: clamp(32px, 4.2vw, 64px);
  color: #dfe8f4;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0;
}

.nav-links a,
.site-footer a {
  opacity: 0.88;
  transition:
    color 180ms ease,
    opacity 180ms ease;
}

.nav-links a:hover,
.site-footer a:hover {
  color: var(--cyan);
  opacity: 1;
}

.header-action,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border: 1px solid rgba(128, 182, 242, 0.5);
  color: #f8fbff;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
  background: rgba(0, 0, 0, 0.42);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
}

.button.primary {
  color: #050505;
  border-color: rgba(255, 255, 255, 0.92);
  background: #f5f5f5;
  box-shadow: 0 18px 42px rgba(255, 255, 255, 0.12);
}

.button.secondary {
  background: rgba(8, 17, 30, 0.72);
}

.header-action:hover,
.button:hover {
  transform: translateY(-2px);
  border-color: rgba(132, 220, 255, 0.9);
  box-shadow: 0 22px 54px rgba(23, 113, 210, 0.25);
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(128, 182, 242, 0.4);
  background: rgba(10, 20, 34, 0.54);
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: #dceaff;
}

.side-nav {
  position: fixed;
  left: 14px;
  top: 50%;
  z-index: 18;
  display: grid;
  gap: 9px;
  width: 58px;
  padding: 18px 10px;
  border: 1px solid rgba(132, 220, 255, 0.18);
  background: linear-gradient(180deg, rgba(8, 16, 28, 0.58), rgba(8, 16, 28, 0.32));
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.18);
  transform: translateY(-50%);
  overflow: hidden;
  transition:
    width 180ms ease,
    background 180ms ease,
    border-color 180ms ease;
}

.side-nav:hover {
  width: 104px;
  border-color: rgba(132, 220, 255, 0.28);
  background: linear-gradient(180deg, rgba(8, 16, 28, 0.84), rgba(8, 16, 28, 0.52));
}

.side-nav::before {
  content: "";
  position: absolute;
  top: 26px;
  bottom: 26px;
  left: 18px;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(132, 220, 255, 0.35), transparent);
}

.side-nav a {
  position: relative;
  display: grid;
  grid-template-columns: 20px auto;
  align-items: center;
  gap: 12px;
  min-height: 36px;
  color: rgba(196, 215, 236, 0.64);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0;
}

.side-nav span {
  position: relative;
  z-index: 1;
  display: block;
  width: 9px;
  height: 9px;
  margin-left: 6px;
  border: 1px solid rgba(132, 220, 255, 0.55);
  border-radius: 50%;
  background: rgba(5, 8, 13, 0.86);
  transition:
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}

.side-nav em {
  font-style: normal;
  opacity: 0;
  transform: translateX(-4px);
  transition:
    opacity 180ms ease,
    transform 180ms ease,
    color 180ms ease;
  white-space: nowrap;
}

.side-nav:hover em {
  opacity: 1;
  transform: translateX(0);
}

.side-nav a:hover,
.side-nav a.is-active {
  color: #edf7ff;
}

.side-nav a:hover span,
.side-nav a.is-active span {
  border-color: rgba(132, 220, 255, 0.95);
  background: var(--accent);
  box-shadow: 0 0 18px rgba(93, 178, 255, 0.72);
  transform: scale(1.12);
}

.hero-section {
  position: relative;
  min-height: 100vh;
  padding: 170px clamp(24px, 5vw, 72px) 72px clamp(108px, 8vw, 144px);
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(128, 182, 242, 0.16);
}

.hero-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.78) 0%, rgba(0, 0, 0, 0.54) 42%, rgba(0, 0, 0, 0.08) 72%, rgba(0, 0, 0, 0.38) 100%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.05) 0%, rgba(0, 0, 0, 0.08) 52%, rgba(0, 0, 0, 0.72) 100%);
}

.hero-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center bottom;
  opacity: 1;
}

.star-field {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    radial-gradient(circle, rgba(255, 255, 255, 0.92) 0 1px, transparent 1.4px),
    radial-gradient(circle, rgba(132, 220, 255, 0.66) 0 1px, transparent 1.6px);
  background-position:
    7% 18%,
    42% 12%;
  background-size:
    210px 190px,
    320px 260px;
  opacity: 0.56;
}

.orbit {
  position: absolute;
  z-index: 2;
  right: -14vw;
  top: 12vh;
  width: 760px;
  height: 760px;
  border: 1px solid rgba(98, 168, 255, 0.28);
  border-radius: 50%;
  transform: rotate(-18deg);
  pointer-events: none;
}

.orbit-two {
  right: -20vw;
  top: 2vh;
  width: 1040px;
  height: 1040px;
  opacity: 0.54;
}

.hero-content {
  position: relative;
  z-index: 3;
  width: min(720px, 100%);
}

.hero-copyline {
  margin: -10px 0 28px;
  color: #cfd5dc;
  font-size: clamp(13px, 1.4vw, 16px);
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 28px;
  font-size: clamp(46px, 6.2vw, 82px);
  line-height: 1.08;
  letter-spacing: 0;
  font-weight: 800;
}

h1 span {
  white-space: nowrap;
}

.hero-lede {
  width: min(600px, 100%);
  margin-bottom: 34px;
  color: #c6d3e3;
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.hero-status {
  position: absolute;
  z-index: 3;
  right: clamp(24px, 5vw, 72px);
  bottom: 42px;
  display: flex;
  gap: 18px;
  color: #b9c9dc;
  font-size: 17px;
  font-weight: 800;
}

.hero-code {
  position: absolute;
  z-index: 3;
  left: clamp(24px, 5vw, 72px);
  bottom: 26px;
  color: rgba(245, 245, 245, 0.56);
  font-family: "DIN Alternate", "Bahnschrift", "Microsoft YaHei UI", sans-serif;
  font-size: 12px;
}

.hero-status span {
  padding-left: 18px;
  position: relative;
}

.hero-status span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 18px rgba(93, 178, 255, 0.8);
}

section:not(.hero-section) {
  position: relative;
  padding: 90px clamp(24px, 5vw, 72px);
}

section:not(.hero-section) > * {
  position: relative;
  z-index: 1;
}

.position-section::after,
.team-section::after,
.milestone-section::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  z-index: 0;
  width: min(760px, 54vw);
  height: 48%;
  background:
    linear-gradient(90deg, rgba(2, 5, 9, 0), rgba(2, 5, 9, 0.26)),
    url("./assets/space-horizon.jpg") right bottom / 100% auto no-repeat;
  opacity: 0.34;
  pointer-events: none;
}

section:not(.hero-section)::before {
  content: "";
  position: absolute;
  left: clamp(24px, 5vw, 72px);
  right: clamp(24px, 5vw, 72px);
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,0.34), transparent 44%, rgba(255,255,255,0.12));
  pointer-events: none;
}

section[id] {
  scroll-margin-top: 86px;
}

.section-heading {
  width: min(720px, 100%);
  margin: 0 auto 56px;
}

.section-heading:not(.centered) {
  margin-left: max(0px, calc((100% - var(--max)) / 2));
}

.section-heading.centered {
  text-align: center;
}

.section-index {
  display: block;
  margin-bottom: 12px;
  color: rgba(155, 220, 255, 0.92);
  font-size: 13px;
  font-weight: 800;
}

h2 {
  margin-bottom: 16px;
  color: #f6fbff;
  font-size: clamp(32px, 4.4vw, 54px);
  line-height: 1.14;
  letter-spacing: 0;
}

.section-heading p,
.contact-copy p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

.position-section {
  background:
    linear-gradient(180deg, rgba(2, 4, 7, 0.98), rgba(4, 6, 9, 0.98)),
    radial-gradient(circle at 72% 0%, rgba(155, 220, 255, 0.11), transparent 38%),
    radial-gradient(circle at 12% 84%, rgba(255, 255, 255, 0.05) 0 1.2px, transparent 2px);
}

.position-rail {
  width: min(var(--max), 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(128, 182, 242, 0.16);
  border-bottom: 1px solid rgba(128, 182, 242, 0.16);
}

.position-rail article {
  min-height: 220px;
  padding: 34px 34px 30px;
  border-right: 1px solid rgba(128, 182, 242, 0.16);
}

.position-rail article:last-child {
  border-right: 0;
}

.rail-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 28px;
  border: 1px solid rgba(132, 220, 255, 0.72);
  border-radius: 50%;
  position: relative;
}

.rail-icon::before,
.rail-icon::after {
  content: "";
  position: absolute;
  inset: 11px;
  border: 1px solid rgba(132, 220, 255, 0.58);
  border-radius: inherit;
}

.cube-icon {
  border-radius: 8px;
  transform: rotate(45deg);
}

.cube-icon::before {
  border-radius: 4px;
}

.orbit-icon::after {
  inset: 8px;
  border-radius: 50%;
  transform: rotate(-30deg) scaleX(1.5);
}

.position-rail h3,
.research-grid h3,
.product-station h3,
.tech-node h3,
.validation-track h3,
.validation-timeline h4 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.3;
  letter-spacing: 0;
}

.position-rail p,
.research-grid p,
.product-station p,
.tech-node p,
.validation-timeline small {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.technology-section {
  overflow: hidden;
  padding-top: 76px;
  padding-bottom: 74px;
  background:
    radial-gradient(circle at 50% 42%, rgba(64, 126, 190, 0.14), transparent 42%),
    linear-gradient(180deg, rgba(1, 3, 6, 0.98), rgba(3, 5, 8, 0.98));
}

.technology-section::before {
  content: "";
  position: absolute;
  inset: 72px clamp(24px, 5vw, 72px) 64px;
  border: 1px solid rgba(128, 182, 242, 0.12);
  pointer-events: none;
  z-index: 1;
}

.technology-section::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  height: 34%;
  background:
    linear-gradient(180deg, rgba(1, 3, 6, 0), rgba(1, 3, 6, 0.88)),
    url("./assets/space-horizon.jpg") center bottom / 100% auto no-repeat;
  opacity: 0.18;
  pointer-events: none;
}

.technology-section > .tech-poster {
  position: absolute;
  left: 50%;
  top: 104px;
  z-index: 0;
  width: min(900px, 62vw);
  opacity: 0.08;
  transform: translateX(-50%);
  mask-image: radial-gradient(ellipse at center, #000 18%, rgba(0, 0, 0, 0.68) 48%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 18%, rgba(0, 0, 0, 0.68) 48%, transparent 78%);
  pointer-events: none;
}

.technology-section .section-heading,
.tech-system {
  position: relative;
  z-index: 2;
}

.technology-section .section-heading {
  margin-bottom: 24px;
}

.tech-system {
  position: relative;
  width: min(1180px, 100%);
  min-height: 470px;
  margin: 0 auto;
  display: grid;
  place-items: center;
}

.tech-system::before {
  content: "";
  position: absolute;
  inset: 78px 160px;
  border: 1px solid rgba(112, 173, 238, 0.24);
  border-radius: 50%;
  box-shadow:
    0 0 0 42px rgba(112, 173, 238, 0.045),
    0 0 110px rgba(75, 145, 225, 0.22);
}

.system-core {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 210px;
  height: 210px;
  border: 1px solid rgba(132, 220, 255, 0.44);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 74, 116, 0.64), rgba(5, 9, 16, 0.85) 64%);
  text-align: center;
  box-shadow: var(--shadow);
}

.core-mark {
  width: 74px;
  height: 74px;
  margin-bottom: 12px;
  display: grid;
  place-items: center;
  position: relative;
}

.core-mark img {
  width: 68px;
  height: 68px;
  object-fit: contain;
  filter: drop-shadow(0 0 18px rgba(132, 220, 255, 0.42));
}

.system-core p {
  margin: 0;
  color: #e8f5ff;
  font-size: 13px;
  line-height: 1.55;
}

.tech-node {
  position: absolute;
  z-index: 3;
  width: 280px;
  padding: 26px;
  border: 1px solid rgba(128, 182, 242, 0.42);
  background: rgba(6, 9, 14, 0.9);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}

.tech-node::before {
  content: "";
  position: absolute;
  width: 80px;
  height: 1px;
  top: 50%;
  background: linear-gradient(90deg, transparent, rgba(132, 220, 255, 0.72));
}

.node-space {
  left: 6%;
  top: 92px;
}

.node-space::before {
  right: -80px;
}

.node-os {
  right: 6%;
  top: 92px;
}

.node-os::before {
  left: -80px;
  transform: rotate(180deg);
}

.node-form {
  bottom: 24px;
}

.node-form::before {
  top: -42px;
  left: 50%;
  width: 1px;
  height: 42px;
}

.product-section {
  overflow: hidden;
  background: #030811;
}

.product-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 24%, rgba(255, 255, 255, 0.96) 0 1.4px, transparent 2.2px),
    radial-gradient(circle at 66% 18%, rgba(155, 220, 255, 0.9) 0 1.3px, transparent 2.1px),
    radial-gradient(circle at 88% 64%, rgba(255, 255, 255, 0.82) 0 1.2px, transparent 2px),
    radial-gradient(circle at 36% 76%, rgba(155, 220, 255, 0.72) 0 1px, transparent 2px),
    radial-gradient(circle at 50% 118%, rgba(70, 142, 216, 0.34), transparent 42%),
    radial-gradient(circle at 82% 12%, rgba(130, 184, 255, 0.18), transparent 38%),
    linear-gradient(180deg, rgba(5, 10, 18, 0.9) 0%, rgba(3, 8, 17, 0.92) 52%, rgba(1, 4, 9, 0.96) 100%);
  background-size:
    180px 150px,
    250px 210px,
    340px 290px,
    460px 380px,
    auto,
    auto,
    auto;
  opacity: 1;
}

.product-section::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(255, 255, 255, 0.62) 0 1.2px, transparent 1.9px),
    radial-gradient(circle, rgba(155, 220, 255, 0.48) 0 1px, transparent 1.7px),
    linear-gradient(rgba(132, 220, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(132, 220, 255, 0.046) 1px, transparent 1px);
  background-position:
    8% 14%,
    76% 38%,
    0 0,
    0 0;
  background-size:
    260px 220px,
    360px 300px,
    82px 82px,
    82px 82px;
  mask-image: linear-gradient(180deg, transparent 0%, #000 18%, #000 76%, transparent 100%);
  pointer-events: none;
}

.product-grid {
  position: relative;
  z-index: 2;
  width: min(1280px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.product-heading {
  position: relative;
  z-index: 2;
}

.product-station {
  position: relative;
  min-height: 560px;
  padding: 22px;
  border: 1px solid rgba(128, 182, 242, 0.28);
  background:
    radial-gradient(circle at 55% 28%, rgba(255, 255, 255, 0.12), transparent 42%),
    linear-gradient(180deg, rgba(16, 25, 38, 0.84), rgba(3, 8, 14, 0.8)),
    linear-gradient(90deg, transparent 0 32%, rgba(132, 220, 255, 0.05) 32% 33%, transparent 33% 100%);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.32);
  overflow: hidden;
}

.product-station,
.tech-node,
.position-rail article,
.research-grid article {
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.product-station::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 18px;
  width: 58px;
  height: 3px;
  background: var(--accent);
  box-shadow: 74px 0 0 rgba(132, 220, 255, 0.22), 92px 0 0 rgba(132, 220, 255, 0.22);
}

.product-station.active {
  border-color: rgba(132, 220, 255, 0.72);
}

.station-frame {
  position: relative;
  display: grid;
  place-items: center;
  height: 350px;
  margin: 38px 0 22px;
}

.station-frame::before {
  content: "";
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: 20px;
  height: 68px;
  border: 1px solid rgba(132, 220, 255, 0.42);
  background:
    linear-gradient(180deg, rgba(100, 165, 231, 0.16), rgba(5, 10, 17, 0.75)),
    linear-gradient(90deg, transparent, rgba(132, 220, 255, 0.22), transparent);
  transform: perspective(420px) rotateX(58deg);
  box-shadow: 0 0 42px rgba(74, 157, 255, 0.2);
}

.station-frame::after {
  content: "";
  position: absolute;
  left: 14%;
  right: 14%;
  bottom: 54px;
  height: 1px;
  background: rgba(132, 220, 255, 0.78);
  box-shadow: 0 0 20px rgba(132, 220, 255, 0.65);
}

.station-frame img {
  position: relative;
  z-index: 2;
  max-width: 96%;
  max-height: 260px;
  filter:
    brightness(1.04)
    contrast(1.04)
    drop-shadow(0 16px 22px rgba(0, 0, 0, 0.44));
}

.product-station:nth-child(2) .station-frame img {
  max-height: 290px;
}

.product-station:nth-child(3) .station-frame img {
  max-width: 108%;
  max-height: 250px;
}

.station-copy {
  position: relative;
  z-index: 2;
  min-height: 142px;
  border-top: 1px solid rgba(128, 182, 242, 0.18);
  padding-top: 22px;
}

.station-copy span {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
}

.milestone-section {
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.98), rgba(6, 6, 6, 0.98)),
    radial-gradient(circle at 50% 10%, rgba(255, 255, 255, 0.08), transparent 40%),
    radial-gradient(circle at 16% 80%, rgba(132, 220, 255, 0.09), transparent 34%);
}

.validation-tracks {
  width: min(var(--max), 100%);
  margin: 0 auto;
  display: grid;
  gap: 58px;
}

.validation-track {
  display: grid;
  grid-template-columns: 150px 1fr;
  align-items: start;
  gap: 30px;
}

.track-heading {
  padding-top: 8px;
}

.track-heading span {
  display: block;
  margin-bottom: 8px;
  color: var(--cyan);
  font-family: "DIN Alternate", "Bahnschrift", "Microsoft YaHei UI", sans-serif;
  font-size: 13px;
  font-weight: 800;
}

.track-heading h3 {
  margin: 0;
  color: #f6fbff;
  font-size: 28px;
}

.tech-track .track-heading span {
  color: #ffd24a;
}

.validation-timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.validation-timeline::before {
  content: "";
  position: absolute;
  top: 36px;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(90deg, rgba(132, 220, 255, 0.16), rgba(132, 220, 255, 0.64), rgba(132, 220, 255, 0.16));
}

.tech-track .validation-timeline::before {
  background: linear-gradient(90deg, rgba(255, 210, 74, 0.16), rgba(255, 210, 74, 0.58), rgba(255, 210, 74, 0.16));
}

.track-node {
  position: relative;
  padding-top: 92px;
  text-align: center;
}

.timeline-dot {
  position: absolute;
  top: 0;
  left: 50%;
  width: 72px;
  height: 72px;
  border: 1px solid rgba(132, 220, 255, 0.5);
  border-radius: 50%;
  background: rgba(8, 20, 33, 0.82);
  box-shadow: 0 0 48px rgba(93, 178, 255, 0.18);
  transform: translateX(-50%);
}

.tech-track .timeline-dot {
  border-color: rgba(255, 210, 74, 0.5);
  box-shadow: 0 0 42px rgba(255, 210, 74, 0.16);
}

.timeline-dot::after {
  content: "";
  position: absolute;
  inset: 29px;
  border-radius: 50%;
  background: rgba(93, 178, 255, 0.56);
  box-shadow: 0 0 22px rgba(93, 178, 255, 0.45);
}

.tech-track .timeline-dot::after {
  background: rgba(255, 210, 74, 0.62);
  box-shadow: 0 0 20px rgba(255, 210, 74, 0.4);
}

.validation-timeline p {
  margin: 0 0 10px;
  color: var(--accent);
  font-family: "DIN Alternate", "Bahnschrift", "Microsoft YaHei UI", sans-serif;
  font-size: 15px;
  font-weight: 800;
}

.validation-timeline h4 {
  margin-bottom: 10px;
  color: #f6fbff;
  font-size: 22px;
  line-height: 1.3;
}

.validation-timeline small {
  display: block;
  max-width: 245px;
  margin: 0 auto;
}

.team-section {
  background:
    linear-gradient(180deg, rgba(2, 5, 9, 0.98), rgba(4, 7, 11, 0.98)),
    radial-gradient(circle at 20% 30%, rgba(93, 178, 255, 0.12), transparent 42%),
    radial-gradient(circle at 88% 64%, rgba(255, 255, 255, 0.06), transparent 32%);
}

.vision-panel {
  width: min(var(--max), 100%);
  margin: -24px auto 46px;
  padding: 26px 30px;
  border: 1px solid rgba(132, 220, 255, 0.24);
  background:
    linear-gradient(90deg, rgba(10, 22, 36, 0.82), rgba(6, 12, 20, 0.62)),
    radial-gradient(circle at 92% 50%, rgba(93, 178, 255, 0.18), transparent 34%);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.vision-panel span {
  display: block;
  margin-bottom: 10px;
  color: var(--cyan);
  font-family: "DIN Alternate", "Bahnschrift", "Microsoft YaHei UI", sans-serif;
  font-size: 14px;
  font-weight: 800;
}

.vision-panel p {
  max-width: 980px;
  margin: 0;
  color: #f4fbff;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.7;
}

.research-grid {
  width: min(var(--max), 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(128, 182, 242, 0.16);
}

.research-grid article {
  padding: 30px 28px;
  border-right: 1px solid rgba(128, 182, 242, 0.16);
}

.research-grid article:last-child {
  border-right: 0;
}

.contact-section {
  min-height: 430px;
  display: grid;
  align-items: center;
  border-top: 1px solid rgba(128, 182, 242, 0.16);
  border-bottom: 1px solid rgba(128, 182, 242, 0.16);
  background: #05080d;
}

.contact-bg {
  position: absolute;
  inset: 0;
  opacity: 0.88;
  background:
    linear-gradient(90deg, #05080d 0%, rgba(5, 8, 13, 0.92) 42%, rgba(5, 8, 13, 0.18) 100%),
    url("./assets/space-horizon.jpg") right 35% / 760px auto no-repeat;
  filter: saturate(0.8) brightness(0.9);
}

.contact-copy {
  position: relative;
  z-index: 2;
  width: min(var(--max), 100%);
  margin-left: max(0px, calc((100% - var(--max)) / 2));
}

.contact-copy h2 {
  max-width: 680px;
}

.contact-copy p {
  max-width: 640px;
  margin-bottom: 28px;
}

.contact-actions {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}

.contact-panel {
  display: grid;
  position: relative;
  grid-template-columns: 1fr;
  align-items: end;
  gap: 22px;
  width: min(var(--max), 100%);
  min-height: 210px;
  padding-top: 22px;
  border-top: 1px solid rgba(128, 182, 242, 0.24);
}

.contact-info {
  display: grid;
  gap: 16px;
}

.qr-card {
  position: absolute;
  right: 0;
  bottom: 0;
  justify-self: end;
  width: 160px;
  padding: 10px;
  border: 1px solid rgba(132, 220, 255, 0.32);
  background:
    linear-gradient(180deg, rgba(11, 22, 36, 0.84), rgba(4, 9, 16, 0.9)),
    radial-gradient(circle at 50% 0%, rgba(155, 220, 255, 0.14), transparent 42%);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
}

.qr-card img {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.qr-card span {
  display: block;
  margin-top: 8px;
  color: #cfe7f8;
  font-size: 12px;
  font-weight: 800;
  text-align: center;
}

.contact-email {
  margin: 0;
  color: #f6fbff;
  font-family: "DIN Alternate", "Bahnschrift", "Microsoft YaHei UI", sans-serif;
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 800;
}

.contact-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 14px;
}

.contact-points li {
  position: relative;
  padding-left: 16px;
}

.contact-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border: 1px solid rgba(132, 220, 255, 0.86);
  background: rgba(132, 220, 255, 0.22);
}

.site-footer {
  display: grid;
  grid-template-columns: 220px 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 28px clamp(22px, 5vw, 64px);
  background: rgba(5, 8, 13, 0.96);
  color: var(--soft);
  font-size: 13px;
}

.site-footer img {
  width: 118px;
  opacity: 0.72;
}

.site-footer .footer-logo {
  filter: drop-shadow(0 0 16px rgba(155, 220, 255, 0.08));
}

.site-footer p {
  margin: 0;
}

@media (max-width: 980px) {
  .side-nav {
    display: none;
  }

  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav-links,
  .header-action {
    display: none;
  }

  .menu-button {
    display: block;
  }

  .site-header.nav-open .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: grid;
    gap: 0;
    padding: 10px 24px 24px;
    background: rgba(5, 9, 15, 0.96);
    border-bottom: 1px solid rgba(128, 182, 242, 0.18);
  }

  .site-header.nav-open .nav-links a {
    padding: 14px 0;
    border-bottom: 1px solid rgba(128, 182, 242, 0.12);
  }

  .hero-media img {
    width: 100%;
    height: 100%;
    object-position: 58% bottom;
  }

  .hero-section {
    padding-left: clamp(24px, 5vw, 72px);
  }

  .hero-status {
    display: none;
  }

  .position-rail,
  .product-grid,
  .validation-timeline,
  .research-grid {
    grid-template-columns: 1fr;
  }

  .validation-tracks {
    gap: 46px;
  }

  .validation-track {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .position-rail article,
  .research-grid article {
    border-right: 0;
    border-bottom: 1px solid rgba(128, 182, 242, 0.16);
  }

  .validation-timeline::before {
    top: 0;
    bottom: 0;
    left: 36px;
    right: auto;
    width: 1px;
    height: auto;
  }

  .track-node {
    padding: 0 0 0 110px;
    min-height: 96px;
    text-align: left;
  }

  .timeline-dot {
    left: 36px;
    transform: translateX(-50%);
  }

  .validation-timeline small {
    max-width: none;
    margin: 0;
  }

  .tech-system {
    display: flex;
    flex-direction: column;
    gap: 18px;
    min-height: auto;
  }

  .tech-system::before,
  .tech-node::before {
    display: none;
  }

  .system-core,
  .tech-node {
    position: relative;
    inset: auto;
    width: min(440px, 100%);
  }

  .site-footer {
    grid-template-columns: 1fr;
  }

  .site-footer nav {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .contact-panel {
    grid-template-columns: 1fr;
    align-items: start;
    min-height: 0;
  }

  .qr-card {
    position: static;
    justify-self: start;
    width: min(220px, 100%);
  }
}

@media (max-width: 640px) {
  .brand img {
    width: 142px;
  }

  .hero-section {
    min-height: 760px;
    padding-top: 138px;
  }

  h1 {
    font-size: 40px;
    line-height: 1.12;
  }

  .hero-lede {
    font-size: 16px;
  }

  h1 span {
    white-space: normal;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .contact-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .contact-panel {
    grid-template-columns: minmax(0, 1fr) clamp(118px, 34vw, 150px);
    gap: 18px;
    align-items: start;
  }

  .contact-info {
    display: contents;
  }

  .contact-email {
    grid-column: 1 / -1;
  }

  .contact-points {
    display: grid;
    grid-column: 1;
    grid-row: 2;
    gap: 12px;
    align-content: start;
  }

  .qr-card {
    grid-column: 2;
    grid-row: 2;
    justify-self: end;
    align-self: start;
    width: clamp(118px, 34vw, 150px);
    padding: 7px;
  }

  .qr-card span {
    margin-top: 6px;
    font-size: 11px;
  }

  section:not(.hero-section) {
    padding-top: 68px;
    padding-bottom: 68px;
  }

  .product-station {
    min-height: 500px;
  }

  .station-frame {
    height: 300px;
  }

  .contact-bg {
    background-size: 620px auto;
    background-position: 64% bottom;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}