:root {
  --bg: #050b12;
  --bg-soft: #0a1421;
  --panel: rgba(10, 19, 31, 0.76);
  --panel-strong: rgba(11, 22, 36, 0.92);
  --line: rgba(163, 200, 227, 0.16);
  --line-strong: rgba(163, 200, 227, 0.28);
  --text: #f3f7fb;
  --muted: rgba(232, 238, 246, 0.7);
  --muted-strong: rgba(232, 238, 246, 0.84);
  --cyan: #8ee6f8;
  --cyan-strong: #43d0ef;
  --gold: #d7c19a;
  --gold-strong: #f0ddbc;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.35);
  --radius-xl: 34px;
  --radius-lg: 26px;
  --radius-md: 20px;
  --container: min(1220px, calc(100vw - 48px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at left top, rgba(67, 208, 239, 0.14), transparent 32%),
    radial-gradient(circle at 85% 18%, rgba(215, 193, 154, 0.12), transparent 26%),
    linear-gradient(180deg, #07101a 0%, #04070d 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.024) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.024) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.8), transparent 95%);
  opacity: 0.52;
}

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

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

.page-frame {
  position: relative;
  overflow: hidden;
}

.topbar,
.hero,
.section {
  position: relative;
  width: var(--container);
  margin-left: auto;
  margin-right: auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  margin-top: 20px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(5, 11, 19, 0.72);
  backdrop-filter: blur(18px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, #ffffff, var(--cyan) 42%, rgba(67, 208, 239, 0.12) 72%);
  box-shadow: 0 0 28px rgba(67, 208, 239, 0.68);
}

.brand-copy {
  display: grid;
  gap: 2px;
}

.brand-copy strong {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand-copy small {
  color: rgba(255, 255, 255, 0.54);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.92rem;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--text);
}

.topbar-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.topbar-cta {
  border: 1px solid rgba(142, 230, 248, 0.2);
  background: linear-gradient(180deg, rgba(142, 230, 248, 0.14), rgba(142, 230, 248, 0.06));
}

.button.primary {
  background: linear-gradient(135deg, #f0ddbc 0%, #91e3f4 42%, #48c7ea 100%);
  color: #021018;
  font-weight: 800;
  box-shadow: 0 14px 44px rgba(67, 208, 239, 0.26);
}

.button.secondary {
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.035);
}

.topbar-cta:hover,
.button:hover,
.topbar-cta:focus-visible,
.button:focus-visible {
  transform: translateY(-2px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(360px, 0.97fr);
  gap: 42px;
  align-items: center;
  padding: 92px 0 56px;
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(34px);
}

.hero-glow-a {
  width: 420px;
  height: 420px;
  left: -6%;
  top: 8%;
  background: rgba(67, 208, 239, 0.14);
  animation: drift 10s ease-in-out infinite;
}

.hero-glow-b {
  width: 320px;
  height: 320px;
  right: 4%;
  top: 18%;
  background: rgba(215, 193, 154, 0.12);
  animation: drift 12s ease-in-out infinite reverse;
}

.hero-grid {
  position: absolute;
  inset: 8% 16% 0 0;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.04);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: auto, 52px 52px, 52px 52px;
  mask-image: linear-gradient(135deg, rgba(0, 0, 0, 0.88), transparent 86%);
}

.eyebrow {
  margin-bottom: 18px;
  color: var(--gold);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.hero h1,
.section h2 {
  font-family: "Baskerville", "Songti SC", "STSong", serif;
  letter-spacing: -0.03em;
}

.hero h1 {
  max-width: 9ch;
  font-size: clamp(3rem, 5vw, 5.8rem);
  line-height: 1.03;
}

.hero-text {
  max-width: 680px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.92;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.hero-facts {
  margin-top: 42px;
  padding-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-facts article {
  display: grid;
  gap: 8px;
}

.hero-facts span,
.metric-card span,
.intro-note span,
.power-card small,
.solution-top span,
.panel-list small,
.panel-head,
.platform-stack small,
.mode-grid span,
.contact-info p {
  color: rgba(255, 255, 255, 0.58);
}

.hero-facts span,
.metric-card span,
.intro-note span,
.power-card small,
.solution-top span,
.platform-stack small {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-facts strong {
  font-size: 1rem;
  line-height: 1.5;
}

.hero-panel {
  min-height: 580px;
  display: grid;
  place-items: center;
}

.panel-shell {
  position: relative;
  width: min(100%, 480px);
  padding: 26px;
  border-radius: 30px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(180deg, rgba(15, 30, 46, 0.9), rgba(6, 15, 25, 0.94)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(67, 208, 239, 0.08), transparent 40%, rgba(215, 193, 154, 0.08));
  pointer-events: none;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.panel-wave {
  min-height: 122px;
  margin: 30px 0 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel-wave span {
  flex: 1;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(67, 208, 239, 0.28));
  animation: wave 1.7s ease-in-out infinite;
}

.panel-wave span:nth-child(1) { height: 40px; animation-delay: 0s; }
.panel-wave span:nth-child(2) { height: 72px; animation-delay: 0.1s; }
.panel-wave span:nth-child(3) { height: 54px; animation-delay: 0.2s; }
.panel-wave span:nth-child(4) { height: 104px; animation-delay: 0.3s; }
.panel-wave span:nth-child(5) { height: 68px; animation-delay: 0.4s; }
.panel-wave span:nth-child(6) { height: 118px; animation-delay: 0.5s; }
.panel-wave span:nth-child(7) { height: 84px; animation-delay: 0.6s; }
.panel-wave span:nth-child(8) { height: 108px; animation-delay: 0.7s; }
.panel-wave span:nth-child(9) { height: 58px; animation-delay: 0.8s; }
.panel-wave span:nth-child(10) { height: 76px; animation-delay: 0.9s; }

.panel-list,
.platform-stack,
.mode-grid,
.solution-grid,
.capability-grid,
.scenario-grid,
.power-grid,
.metrics {
  display: grid;
  gap: 18px;
}

.panel-list article,
.metric-card,
.intro-note,
.platform-stack article,
.mode-grid article,
.power-card,
.solution-card,
.capability-card,
.scenario-card,
.contact-panel {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.032);
  backdrop-filter: blur(12px);
}

.panel-list article {
  padding: 18px;
  border-radius: 18px;
}

.panel-list strong,
.platform-stack strong,
.mode-grid strong,
.power-card h3,
.solution-card h3,
.capability-card h3,
.scenario-card h3 {
  display: block;
  margin: 8px 0 10px;
  font-size: 1.04rem;
}

.panel-list p,
.platform-stack p,
.mode-grid p,
.intro-text,
.intro-note p,
.solution-text,
.solution-points li,
.capability-card p,
.scenario-card p,
.contact-info p {
  color: var(--muted);
  line-height: 1.82;
}

.section {
  padding: 44px 0;
}

.metrics {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.metric-card {
  padding: 22px;
  border-radius: 22px;
}

.metric-card strong {
  display: block;
  margin-top: 10px;
  font-size: 1.16rem;
  line-height: 1.58;
}

.section-head {
  display: grid;
  gap: 8px;
  margin-bottom: 28px;
}

.section h2 {
  max-width: 14ch;
  font-size: clamp(2rem, 3vw, 3.5rem);
  line-height: 1.14;
}

.intro-layout,
.platform-layout,
.contact-panel {
  display: grid;
  gap: 22px;
}

.intro-layout {
  grid-template-columns: minmax(0, 1.26fr) minmax(260px, 0.74fr);
}

.intro-text,
.intro-note {
  padding: 28px;
  border-radius: var(--radius-lg);
}

.intro-text {
  font-size: 1.08rem;
}

.intro-note {
  display: grid;
  align-content: center;
  gap: 16px;
}

.platform-layout {
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
}

.platform-main,
.mode-panel {
  border-radius: 30px;
}

.platform-stack article,
.mode-grid article,
.power-card,
.solution-card,
.capability-card,
.scenario-card {
  border-radius: var(--radius-lg);
}

.platform-stack article {
  padding: 24px;
}

.mode-panel {
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, rgba(13, 25, 40, 0.88), rgba(7, 14, 23, 0.94));
  box-shadow: var(--shadow);
}

.mode-panel h3 {
  margin-bottom: 18px;
  font-size: 1.34rem;
}

.mode-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mode-grid article {
  padding: 20px;
}

.mode-grid span,
.capability-card span {
  display: inline-flex;
  margin-bottom: 20px;
  color: var(--gold-strong);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
}

.power-grid {
  margin-top: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.power-card {
  padding: 24px;
}

.power-card ul,
.solution-points {
  margin: 16px 0 0;
  padding-left: 18px;
  color: var(--muted-strong);
}

.power-card li,
.solution-points li {
  margin-bottom: 10px;
  line-height: 1.8;
}

.solution-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.solution-card {
  min-height: 100%;
  padding: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02)),
    radial-gradient(circle at top right, rgba(67, 208, 239, 0.08), transparent 38%);
}

.solution-top {
  margin-bottom: 18px;
}

.solution-text {
  font-size: 1rem;
}

.solution-stats {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.solution-stats strong {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.92rem;
}

.capability-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.capability-card,
.scenario-card {
  padding: 24px;
}

.capability-card h3,
.scenario-card h3 {
  margin-bottom: 14px;
  font-size: 1.18rem;
}

.scenario-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.contact {
  padding-bottom: 88px;
}

.contact-panel {
  grid-template-columns: minmax(0, 1.08fr) minmax(300px, 0.92fr);
  align-items: end;
  padding: 30px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(14, 27, 42, 0.9), rgba(7, 14, 23, 0.94)),
    radial-gradient(circle at top right, rgba(215, 193, 154, 0.12), transparent 30%);
  box-shadow: var(--shadow);
}

.contact-info {
  display: grid;
  gap: 10px;
  justify-items: start;
}

.contact-info strong {
  color: var(--text);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes wave {
  0%, 100% {
    transform: scaleY(0.76);
    opacity: 0.56;
  }
  50% {
    transform: scaleY(1.06);
    opacity: 1;
  }
}

@keyframes drift {
  0%, 100% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(18px, -22px, 0);
  }
}

@media (max-width: 1120px) {
  .nav {
    display: none;
  }

  .hero,
  .intro-layout,
  .platform-layout,
  .contact-panel,
  .solution-grid {
    grid-template-columns: 1fr;
  }

  .hero h1,
  .section h2 {
    max-width: none;
  }

  .metrics,
  .capability-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  :root {
    --container: min(100vw - 28px, 1000px);
  }

  .topbar {
    margin-top: 12px;
    padding: 12px 14px;
    border-radius: 24px;
  }

  .brand-copy small,
  .topbar-cta {
    display: none;
  }

  .hero {
    gap: 28px;
    padding-top: 52px;
  }

  .hero-facts,
  .metrics,
  .mode-grid,
  .power-grid,
  .capability-grid,
  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .hero-text,
  .intro-text,
  .solution-text {
    font-size: 0.98rem;
  }

  .panel-shell,
  .mode-panel,
  .contact-panel,
  .intro-text,
  .intro-note,
  .platform-stack article,
  .mode-grid article,
  .power-card,
  .solution-card,
  .capability-card,
  .scenario-card,
  .metric-card {
    padding: 20px;
    border-radius: 22px;
  }

  .hero-panel {
    min-height: 440px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}