:root {
  --bg: #051314;
  --bg-2: #071c1b;
  --panel: rgba(8, 38, 36, 0.72);
  --panel-strong: rgba(10, 54, 48, 0.86);
  --text: #ecfff7;
  --muted: #9ecdc1;
  --cyan: #22f4e0;
  --green: #42ff8d;
  --lime: #d6ff75;
  --line: rgba(123, 255, 209, 0.22);
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 10% 12%, rgba(34, 244, 224, 0.18), transparent 30rem),
    radial-gradient(circle at 82% 4%, rgba(66, 255, 141, 0.13), transparent 28rem),
    linear-gradient(180deg, var(--bg), #03100f 58%, #071816);
  color: var(--text);
  font-family:
    "Microsoft YaHei UI",
    "Microsoft YaHei",
    "PingFang SC",
    "Hiragino Sans GB",
    "Segoe UI",
    Arial,
    system-ui,
    sans-serif;
  letter-spacing: 0;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

.signal-canvas {
  inset: 0;
  opacity: 0.42;
  pointer-events: none;
  position: fixed;
  z-index: 0;
}

.page-shell {
  margin: 0 auto;
  max-width: 1440px;
  padding: 0 28px;
  position: relative;
  z-index: 1;
}

.site-header {
  align-items: center;
  backdrop-filter: blur(18px);
  background: rgba(5, 19, 20, 0.66);
  border: 1px solid var(--line);
  border-radius: 999px;
  display: flex;
  justify-content: space-between;
  left: 28px;
  margin: 22px auto 0;
  max-width: calc(1440px - 56px);
  padding: 10px 12px 10px 18px;
  position: sticky;
  right: 28px;
  top: 18px;
  z-index: 10;
}

.brand,
.site-nav,
.hero-actions,
.footer-actions,
.case-rail {
  align-items: center;
  display: flex;
}

.brand {
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  background: conic-gradient(from 210deg, var(--green), var(--cyan), var(--lime), var(--green));
  border-radius: 50%;
  color: #03100f;
  display: grid;
  height: 34px;
  place-items: center;
  width: 34px;
}

.site-nav {
  gap: 4px;
}

.site-nav a {
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  padding: 10px 14px;
  transition: background 180ms ease, color 180ms ease;
}

.site-nav a:hover {
  background: rgba(34, 244, 224, 0.12);
  color: var(--text);
}

.nav-toggle {
  background: transparent;
  border: 0;
  display: none;
  height: 38px;
  padding: 8px;
  width: 42px;
}

.nav-toggle span {
  background: var(--text);
  display: block;
  height: 2px;
  margin: 7px 0;
  width: 100%;
}

.hero {
  align-items: center;
  display: grid;
  gap: 48px;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  min-height: calc(100vh - 82px);
  padding: 72px 0 42px;
}

.eyebrow {
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  margin: 0 0 18px;
  text-transform: uppercase;
}

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

h1 {
  font-size: clamp(48px, 7.2vw, 104px);
  letter-spacing: 0;
  line-height: 0.94;
  margin-bottom: 28px;
  max-width: 900px;
}

h2 {
  font-size: clamp(34px, 4.3vw, 68px);
  letter-spacing: 0;
  line-height: 1.02;
  margin-bottom: 22px;
}

h3 {
  font-size: 24px;
  line-height: 1.15;
  margin-bottom: 14px;
}

.hero-text,
.section-copy p,
.section-heading p,
.capability-card p,
.case-stage p,
.footer-copy p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

.hero-text {
  max-width: 700px;
}

.button {
  border: 1px solid var(--line);
  border-radius: 999px;
  display: inline-flex;
  font-weight: 800;
  justify-content: center;
  min-width: 138px;
  padding: 14px 20px;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

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

.button.primary {
  background: linear-gradient(135deg, var(--cyan), var(--green));
  color: #03100f;
}

.button.ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.hero-actions,
.footer-actions {
  gap: 12px;
  margin-top: 32px;
}

.hero-visual {
  aspect-ratio: 1 / 1;
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}

.hero-visual::after {
  background:
    linear-gradient(90deg, rgba(214, 255, 117, 0.16) 1px, transparent 1px),
    linear-gradient(180deg, rgba(34, 244, 224, 0.12) 1px, transparent 1px);
  background-size: 58px 58px;
  content: "";
  inset: 0;
  mix-blend-mode: screen;
  position: absolute;
}

.hero-visual img {
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.orbit-card {
  backdrop-filter: blur(18px);
  background: rgba(3, 16, 15, 0.68);
  border: 1px solid rgba(214, 255, 117, 0.28);
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.34);
  padding: 16px 18px;
  position: absolute;
  z-index: 2;
}

.orbit-card span {
  color: var(--muted);
  display: block;
  font-size: 12px;
  margin-bottom: 6px;
}

.orbit-card strong {
  color: var(--green);
  font-size: 24px;
}

.card-a {
  left: 7%;
  top: 14%;
}

.card-b {
  bottom: 11%;
  right: 8%;
}

.pulse-ring {
  animation: pulse 3.6s ease-in-out infinite;
  border: 1px solid rgba(34, 244, 224, 0.42);
  border-radius: 50%;
  height: 44%;
  left: 28%;
  position: absolute;
  top: 28%;
  width: 44%;
  z-index: 1;
}

.metric-strip {
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(3, 1fr);
}

.metric-strip div {
  background: rgba(255, 255, 255, 0.03);
  min-height: 170px;
  padding: 28px;
}

.metric-strip span {
  color: var(--cyan);
  display: block;
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 22px;
}

.metric-strip strong {
  display: block;
  font-size: 22px;
  margin-bottom: 10px;
}

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

.section {
  padding: 118px 0;
}

.split {
  align-items: center;
  display: grid;
  gap: 48px;
  grid-template-columns: 0.92fr 1.08fr;
}

.section-copy,
.section-heading {
  max-width: 860px;
}

.platform-panel,
.case-stage {
  background:
    linear-gradient(135deg, rgba(34, 244, 224, 0.12), rgba(66, 255, 141, 0.08)),
    var(--panel);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.platform-panel {
  padding: 22px;
}

.node-map {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(5, 1fr);
  margin-bottom: 30px;
}

.node {
  align-items: center;
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
  display: flex;
  font-size: 13px;
  font-weight: 800;
  justify-content: center;
  min-width: 0;
}

.node.active {
  background: linear-gradient(135deg, rgba(34, 244, 224, 0.3), rgba(66, 255, 141, 0.28));
  color: var(--text);
}

.panel-line {
  align-items: center;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  padding: 20px 4px;
}

.panel-line span {
  color: var(--muted);
}

.panel-line strong {
  color: var(--lime);
  font-size: 20px;
}

.capability-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 44px;
}

.capability-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  min-height: 320px;
  padding: 24px;
  position: relative;
  transition: background 180ms ease, transform 180ms ease;
}

.capability-card:hover {
  background: var(--panel-strong);
  transform: translateY(-5px);
}

.card-index {
  align-items: center;
  background: rgba(34, 244, 224, 0.13);
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--cyan);
  display: flex;
  font-weight: 800;
  height: 42px;
  justify-content: center;
  margin-bottom: 80px;
  width: 42px;
}

.use-cases {
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
}

.case-rail {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: 999px;
  gap: 6px;
  margin: 34px 0 18px;
  padding: 6px;
  width: max-content;
}

.case-tab {
  background: transparent;
  border: 0;
  border-radius: 999px;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  padding: 12px 16px;
}

.case-tab.active {
  background: linear-gradient(135deg, var(--cyan), var(--green));
  color: #03100f;
}

.case-stage {
  align-items: center;
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr 320px;
  min-height: 320px;
  padding: 34px;
}

.case-label {
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.case-signal {
  border: 1px solid var(--line);
  border-radius: 20px;
  display: grid;
  gap: 12px;
  height: 220px;
  padding: 18px;
}

.case-signal span {
  animation: scan 2.8s ease-in-out infinite;
  background: linear-gradient(90deg, var(--cyan), var(--green));
  border-radius: 999px;
  display: block;
}

.case-signal span:nth-child(2) {
  animation-delay: 0.3s;
  opacity: 0.78;
  width: 72%;
}

.case-signal span:nth-child(3) {
  animation-delay: 0.6s;
  opacity: 0.54;
  width: 48%;
}

.manifesto {
  max-width: 1000px;
}

.manifesto p {
  color: var(--lime);
  font-size: 20px;
  font-weight: 800;
}

.site-footer {
  align-items: end;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 36px;
  grid-template-columns: 1fr auto;
  padding: 72px 0 34px;
}

.site-footer h2 {
  max-width: 760px;
}

.footer-bottom {
  align-items: center;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 18px;
  grid-column: 1 / -1;
  grid-template-columns: auto 1fr auto;
  padding-top: 24px;
}

.footer-brand {
  width: max-content;
}

.footer-nav {
  align-items: center;
  display: flex;
  gap: 6px;
  justify-content: center;
}

.footer-nav a {
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  padding: 10px 12px;
}

.footer-nav a:hover {
  background: rgba(34, 244, 224, 0.12);
  color: var(--text);
}

.footer-meta {
  color: var(--muted);
  font-size: 13px;
  margin: 0;
  text-align: right;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms ease, transform 700ms ease;
}

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

@keyframes pulse {
  0%,
  100% {
    opacity: 0.26;
    transform: scale(0.88);
  }

  50% {
    opacity: 0.8;
    transform: scale(1.08);
  }
}

@keyframes scan {
  0%,
  100% {
    transform: scaleX(0.42);
    transform-origin: left;
  }

  50% {
    transform: scaleX(1);
    transform-origin: left;
  }
}

@media (max-width: 980px) {
  .page-shell {
    padding: 0 18px;
  }

  .site-header {
    left: 18px;
    right: 18px;
  }

  .hero,
  .split,
  .case-stage,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 56px;
  }

  .hero-visual {
    min-height: 460px;
  }

  .metric-strip,
  .capability-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-footer {
    align-items: start;
  }

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

  .footer-nav {
    justify-content: start;
  }

  .footer-meta {
    text-align: left;
  }
}

@media (max-width: 680px) {
  .site-header {
    border-radius: 24px;
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    align-items: stretch;
    padding-top: 10px;
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    padding: 12px;
  }

  h1 {
    font-size: 46px;
  }

  .hero-actions,
  .footer-actions,
  .case-rail {
    align-items: stretch;
    flex-direction: column;
    width: 100%;
  }

  .button,
  .case-tab {
    width: 100%;
  }

  .hero-visual {
    border-radius: 20px;
    min-height: 360px;
  }

  .metric-strip,
  .capability-grid,
  .node-map {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 78px 0;
  }

  .metric-strip div,
  .platform-panel,
  .case-stage,
  .capability-card {
    padding: 20px;
  }

  .capability-card {
    min-height: auto;
  }

  .card-index {
    margin-bottom: 44px;
  }

  .case-signal {
    height: 160px;
  }
}