:root {
  --ink: #f4f8ff;
  --muted: #99abc2;
  --muted-strong: #bdcce0;
  --blue: #4e8cff;
  --cyan: #52e3d2;
  --navy: #071426;
  --navy-soft: #0b1c33;
  --line: rgba(148, 179, 221, 0.16);
  --card: rgba(12, 30, 53, 0.72);
  --max: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 3%, rgba(55, 120, 255, 0.12), transparent 28rem),
    var(--navy);
  font-family:
    Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 78px;
  padding: 0 max(28px, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(7, 20, 38, 0.82);
  backdrop-filter: blur(18px);
}

.wordmark {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  width: max-content;
}

.wordmark-en {
  letter-spacing: 0.14em;
  font-size: 14px;
  font-weight: 760;
}

.wordmark-cn {
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
}

nav {
  display: flex;
  gap: 34px;
  color: var(--muted-strong);
  font-size: 14px;
}

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

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

.header-contact {
  justify-self: end;
  padding: 10px 18px;
  border: 1px solid rgba(82, 227, 210, 0.34);
  border-radius: 999px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 700;
  transition:
    background 180ms ease,
    color 180ms ease;
}

.header-contact:hover {
  color: var(--navy);
  background: var(--cyan);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 72px;
  align-items: center;
  min-height: min(790px, calc(100vh - 78px));
  max-width: 1440px;
  margin: 0 auto;
  padding: 112px max(42px, calc((100vw - var(--max)) / 2)) 100px;
  overflow: hidden;
}

.hero-copy,
.hero-panel {
  position: relative;
  z-index: 2;
}

.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.5;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to right, transparent, black 34%, black 78%, transparent);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  pointer-events: none;
}

.hero-glow-one {
  top: 10%;
  right: 13%;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(38, 110, 255, 0.2), transparent 70%);
}

.hero-glow-two {
  right: 34%;
  bottom: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(50, 220, 199, 0.08), transparent 68%);
}

.eyebrow,
.section-kicker {
  margin: 0 0 22px;
  color: var(--cyan);
  letter-spacing: 0.15em;
  font-size: 12px;
  font-weight: 780;
}

.eyebrow {
  display: flex;
  gap: 10px;
  align-items: center;
}

.eyebrow span {
  width: 26px;
  height: 1px;
  background: var(--cyan);
}

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

.hero h1 {
  max-width: 700px;
  margin-bottom: 26px;
  letter-spacing: -0.045em;
  font-size: clamp(48px, 5.2vw, 76px);
  line-height: 1.12;
}

.hero-lead {
  max-width: 640px;
  margin-bottom: 38px;
  color: var(--muted-strong);
  font-size: 18px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 50px;
  padding: 0 23px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 720;
  transition:
    transform 180ms ease,
    border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #061220;
  background: linear-gradient(135deg, var(--cyan), #6aafff);
}

.button-secondary {
  border: 1px solid var(--line);
  color: var(--muted-strong);
  background: rgba(255, 255, 255, 0.025);
}

.button-secondary:hover {
  border-color: rgba(82, 227, 210, 0.44);
}

.hero-panel {
  min-height: 460px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    linear-gradient(145deg, rgba(16, 41, 72, 0.72), rgba(6, 19, 35, 0.7)),
    var(--card);
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.28);
}

.signal-line {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  letter-spacing: 0.12em;
  font-size: 10px;
  font-weight: 700;
}

.status {
  display: flex;
  gap: 7px;
  align-items: center;
  color: var(--cyan);
}

.status i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
}

.orbit {
  position: relative;
  display: grid;
  place-items: center;
  width: 290px;
  height: 290px;
  margin: 34px auto 24px;
}

.orbit-ring {
  position: absolute;
  border: 1px solid rgba(102, 153, 228, 0.25);
  border-radius: 50%;
}

.ring-one {
  inset: 20px;
  animation: rotate 18s linear infinite;
}

.ring-one::after,
.ring-two::before {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 18px rgba(82, 227, 210, 0.8);
  content: "";
}

.ring-one::after {
  top: 35px;
  right: 19px;
}

.ring-two {
  inset: 60px;
  border-style: dashed;
  animation: rotate 14s linear infinite reverse;
}

.ring-two::before {
  bottom: 14px;
  left: 18px;
  background: var(--blue);
}

.orbit-core {
  display: grid;
  place-items: center;
  width: 84px;
  height: 84px;
  border: 1px solid rgba(82, 227, 210, 0.5);
  border-radius: 23px;
  color: var(--cyan);
  background: rgba(82, 227, 210, 0.08);
  box-shadow: 0 0 60px rgba(71, 196, 255, 0.16);
  font-size: 31px;
  font-weight: 780;
}

.orbit-node {
  position: absolute;
  width: 8px;
  height: 8px;
  border: 1px solid var(--blue);
  background: var(--navy);
  transform: rotate(45deg);
}

.node-one { top: 35px; left: 58px; }
.node-two { right: 24px; bottom: 95px; }
.node-three { bottom: 34px; left: 102px; }

.panel-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}

.panel-metrics div {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 18px 14px 0;
}

.panel-metrics div + div {
  border-left: 1px solid var(--line);
}

.panel-metrics strong {
  color: var(--ink);
  letter-spacing: 0.04em;
  font-size: 14px;
}

.panel-metrics span {
  color: var(--muted);
  font-size: 11px;
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 120px 28px;
}

.intro {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 60px;
  border-top: 1px solid var(--line);
}

.section-label {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--muted);
}

.section-label span {
  color: var(--cyan);
  font-size: 12px;
}

.section-label p {
  letter-spacing: 0.12em;
  font-size: 11px;
}

.intro-content h2,
.section-heading h2,
.capability-copy h2,
.platform-note h2,
.contact h2 {
  margin-bottom: 40px;
  letter-spacing: -0.035em;
  font-size: clamp(34px, 4vw, 52px);
  line-height: 1.24;
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 58px;
  color: var(--muted-strong);
  line-height: 2;
}

.products {
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 80px;
  align-items: end;
  margin-bottom: 56px;
}

.section-heading h2 {
  margin-bottom: 0;
}

.section-heading > p {
  color: var(--muted);
  line-height: 1.9;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.product-card {
  position: relative;
  min-height: 420px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.018);
  overflow: hidden;
  transition:
    transform 220ms ease,
    border-color 220ms ease,
    background 220ms ease;
}

.product-card:hover {
  border-color: rgba(82, 227, 210, 0.32);
  background: rgba(33, 73, 120, 0.16);
  transform: translateY(-5px);
}

.product-card.featured {
  background: linear-gradient(160deg, rgba(27, 83, 138, 0.26), rgba(7, 25, 45, 0.3));
}

.card-index {
  position: absolute;
  top: 24px;
  right: 26px;
  color: var(--muted);
  font-size: 11px;
}

.card-icon {
  display: grid;
  place-items: center;
  width: 96px;
  height: 96px;
  margin: 55px 0 52px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(82, 227, 210, 0.04);
}

.tool-shape {
  position: relative;
  width: 34px;
  height: 34px;
  border: 2px solid var(--cyan);
  border-radius: 8px;
  transform: rotate(45deg);
}

.tool-shape::after {
  position: absolute;
  inset: 8px;
  border: 1px solid var(--blue);
  content: "";
}

.health-icon span {
  width: 39px;
  height: 39px;
  border: 2px solid var(--cyan);
  border-radius: 50% 50% 50% 8px;
  transform: rotate(-45deg);
}

.drama-icon {
  position: relative;
}

.drama-icon span {
  width: 40px;
  height: 30px;
  border: 2px solid var(--cyan);
  border-radius: 7px;
}

.drama-icon i,
.drama-icon b {
  position: absolute;
  top: 28px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--blue);
}

.drama-icon i { left: 34px; }
.drama-icon b { right: 34px; }

.product-card h3 {
  margin-bottom: 8px;
  font-size: 25px;
}

.card-en {
  margin-bottom: 21px;
  color: var(--cyan);
  letter-spacing: 0.12em;
  font-size: 10px;
  font-weight: 750;
}

.product-card > p:last-child {
  color: var(--muted);
  line-height: 1.8;
}

.capabilities {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 100px;
  border-top: 1px solid var(--line);
}

.capability-copy {
  position: sticky;
  top: 130px;
  align-self: start;
}

.capability-copy p:last-child {
  color: var(--muted);
  line-height: 1.9;
}

.capability-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.capability-list li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  padding: 29px 0;
  border-top: 1px solid var(--line);
}

.capability-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.capability-list > li > span {
  color: var(--cyan);
  font-size: 12px;
}

.capability-list h3 {
  margin-bottom: 10px;
  font-size: 21px;
}

.capability-list p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.7;
}

.platform-note {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 90px;
  align-items: center;
  padding-top: 70px;
  padding-bottom: 70px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    linear-gradient(120deg, rgba(49, 105, 185, 0.12), transparent 55%),
    rgba(255, 255, 255, 0.015);
}

.platform-note h2 {
  margin-bottom: 0;
}

.platform-note > p {
  margin-bottom: 0;
  color: var(--muted-strong);
  line-height: 2;
}

.contact {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 90px;
  max-width: var(--max);
  margin: 120px auto;
  padding: 70px 60px;
  border-radius: 24px;
  color: #071426;
  background:
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.4), transparent 30%),
    linear-gradient(135deg, #62ead7, #78adff);
}

.contact .section-kicker {
  color: #0b4e63;
}

.contact h2 {
  margin-bottom: 0;
}

.contact-details {
  display: flex;
  flex-direction: column;
}

.contact-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 22px;
  padding: 23px 0;
  border-top: 1px solid rgba(7, 20, 38, 0.17);
}

.contact-row:last-child {
  border-bottom: 1px solid rgba(7, 20, 38, 0.17);
}

.contact-row span {
  color: rgba(7, 20, 38, 0.62);
  font-size: 13px;
}

.contact-row strong {
  font-size: 15px;
}

footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 30px;
  align-items: end;
  max-width: var(--max);
  margin: 0 auto;
  padding: 52px 28px 60px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}

footer > div:first-child {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

footer strong {
  color: var(--ink);
  letter-spacing: 0.12em;
}

.footer-links {
  display: flex;
  gap: 24px;
}

footer > p {
  justify-self: end;
  margin-bottom: 0;
  text-align: right;
}

.legal-shell {
  max-width: 920px;
  margin: 0 auto;
  padding: 110px 28px 120px;
}

.legal-heading {
  padding-bottom: 52px;
  border-bottom: 1px solid var(--line);
}

.legal-heading h1 {
  margin-bottom: 18px;
  letter-spacing: -0.04em;
  font-size: clamp(48px, 7vw, 72px);
}

.legal-heading > p:last-child {
  color: var(--muted);
}

.legal-content {
  padding-top: 48px;
}

.legal-content section {
  margin-bottom: 42px;
}

.legal-content h2 {
  margin-bottom: 16px;
  font-size: 21px;
}

.legal-content p,
.legal-content li {
  color: var(--muted-strong);
  line-height: 2;
}

.legal-content ul {
  margin: 0;
  padding-left: 22px;
}

.legal-content a {
  color: var(--cyan);
}

@keyframes rotate {
  to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .orbit-ring { animation: none; }
  * { transition-duration: 0.01ms !important; }
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
    padding-inline: 22px;
  }

  nav {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 64px;
    padding: 90px 24px 74px;
  }

  .hero-panel {
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
  }

  .intro,
  .capabilities,
  .platform-note,
  .contact {
    grid-template-columns: 1fr;
  }

  .intro {
    gap: 34px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    min-height: 360px;
  }

  .card-icon {
    margin-top: 35px;
    margin-bottom: 38px;
  }

  .capability-copy {
    position: static;
  }

  .platform-note {
    margin-inline: 24px;
  }

  .contact {
    margin-inline: 24px;
    padding: 48px 32px;
  }
}

@media (max-width: 620px) {
  .site-header {
    min-height: 70px;
  }

  .wordmark-cn {
    display: none;
  }

  .header-contact {
    padding: 8px 13px;
  }

  .hero h1 {
    font-size: 45px;
  }

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

  .hero-panel {
    min-height: 410px;
    padding: 20px;
  }

  .orbit {
    width: 250px;
    height: 250px;
  }

  .panel-metrics div {
    padding-inline: 8px;
  }

  .section {
    padding: 86px 22px;
  }

  .intro-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .platform-note {
    margin-inline: 14px;
    padding-inline: 24px;
  }

  .contact {
    margin: 80px 14px;
    padding: 40px 22px;
  }

  .contact-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  footer {
    grid-template-columns: 1fr;
    align-items: start;
    padding-inline: 22px;
  }

  footer > p {
    justify-self: start;
    text-align: left;
  }
}