:root {
  --ink: #f5fff8;
  --muted: rgba(229, 246, 234, 0.68);
  --soft: rgba(229, 246, 234, 0.46);
  --line: rgba(212, 255, 225, 0.17);
  --glass: rgba(15, 35, 28, 0.46);
  --glass-strong: rgba(8, 23, 19, 0.72);
  --green: #9cf2a7;
  --cyan: #73e7e6;
  --orange: #ff7a1a;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.42);
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 10%, rgba(115, 231, 230, 0.22), transparent 28rem),
    radial-gradient(circle at 88% 22%, rgba(156, 242, 167, 0.16), transparent 24rem),
    linear-gradient(135deg, #06100e 0%, #091814 38%, #101412 72%, #050806 100%);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.026) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent 82%);
}

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

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

.site-shell {
  position: relative;
  min-height: 100vh;
  overflow: visible;
}

#intro,
#features,
#scenes,
#contact {
  scroll-margin-top: 116px;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1180px, calc(100% - 40px));
  margin: 18px auto 0;
  padding: 12px 14px 12px 20px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(7, 18, 16, 0.56);
  box-shadow: 0 16px 60px rgba(0, 0, 0, 0.32);
  backdrop-filter: blur(22px) saturate(150%);
}

.brand {
  display: flex;
  gap: 8px;
  align-items: baseline;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand strong {
  color: var(--orange);
}

.nav-links {
  display: flex;
  gap: 30px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--ink);
}

.nav-action,
.primary-btn,
.ghost-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
}

.nav-action {
  padding: 0 18px;
  color: #140904;
  background: linear-gradient(135deg, #ff9a3d, #ff6414);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(520px, 1.2fr);
  gap: 42px;
  align-items: center;
  width: min(1180px, calc(100% - 40px));
  min-height: calc(100vh - 90px);
  margin: 0 auto;
  padding: 66px 0 74px;
}

.hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 10%;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(156, 242, 167, 0.16);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(115, 231, 230, 0.1), transparent 64%);
  filter: blur(2px);
}

.hero-copy,
.hero-visual {
  position: relative;
  z-index: 1;
}

.overline,
.section-heading p,
.lab-copy > p {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(58px, 8vw, 108px);
  line-height: 0.95;
  font-weight: 800;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1.05;
  font-weight: 780;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.25;
}

.lead {
  max-width: 530px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 34px;
}

.primary-btn {
  padding: 0 28px;
  color: #120903;
  background: linear-gradient(135deg, #ffab50, #ff6e17);
  box-shadow: 0 18px 44px rgba(255, 111, 23, 0.32);
}

.ghost-btn {
  padding: 0 24px;
  border: 1px solid var(--line);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(16px);
}

.hero-visual {
  min-height: 650px;
  isolation: isolate;
}

.device {
  position: absolute;
  left: 50%;
  top: 110px;
  z-index: 1;
  width: min(760px, 92%);
  max-width: none;
  border-radius: 8px;
  transform: translateX(-50%);
  filter: drop-shadow(0 40px 76px rgba(0, 0, 0, 0.62));
}

.glass-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.035));
  box-shadow: var(--shadow);
  backdrop-filter: blur(28px) saturate(150%);
}

.data-card {
  position: absolute;
  left: 4%;
  top: 58px;
  z-index: 3;
  width: 250px;
  padding: 16px;
  transform: translateX(-20%);
  background-color: var(--glass-strong);
  opacity: 0.5;
}

.data-card span,
.live-card span {
  display: block;
  margin-bottom: 16px;
  color: var(--soft);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.data-card dl {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 0;
}

.data-card div {
  min-height: 70px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.055);
}

.data-card dt {
  color: var(--soft);
  font-size: 12px;
}

.data-card dd {
  margin: 8px 0 0;
  color: var(--green);
  font-size: 18px;
  font-weight: 800;
}

.live-card {
  position: absolute;
  right: -2%;
  bottom: 0;
  z-index: 3;
  width: 320px;
  padding: 12px;
  background-color: rgba(7, 17, 16, 0.66);
}

.live-card img {
  height: 196px;
  width: 100%;
  object-fit: cover;
  object-position: 48% 42%;
  border-radius: 6px;
  opacity: 0.92;
}

.intro-band,
.section,
.lab-section,
.closing {
  width: min(1480px, calc(100% - 40px));
  margin: 0 auto;
}

.intro-band {
  display: grid;
  grid-template-columns: minmax(720px, 1.25fr) minmax(420px, 0.75fr);
  gap: 38px;
  align-items: end;
  padding: 84px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.intro-text h2 {
  font-size: 46px;
  white-space: nowrap;
}

.intro-text p,
.lab-copy p,
.closing p,
.feature-panel p,
.feature-grid p,
.scene-content p,
.scene-content li {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.78;
}

.glass-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(22px);
}

.glass-strip span {
  display: grid;
  min-height: 96px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 6px;
  color: rgba(245, 255, 248, 0.84);
  font-size: 14px;
  font-weight: 700;
  text-align: center;
  background: rgba(5, 16, 13, 0.48);
}

.section {
  padding: 76px 0;
}

.section-heading {
  margin-bottom: 34px;
}

.feature-layout {
  display: grid;
  grid-template-columns: minmax(450px, 1.02fr) minmax(0, 0.98fr);
  gap: 22px;
}

.feature-panel {
  overflow: hidden;
  background-color: rgba(7, 18, 15, 0.66);
}

.feature-panel img {
  width: 100%;
  height: 390px;
  object-fit: cover;
  object-position: 45% 42%;
}

.feature-panel div {
  padding: 26px;
}

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

.feature-grid article {
  min-height: 204px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.055);
  backdrop-filter: blur(18px);
}

.feature-grid span {
  display: block;
  margin-bottom: 18px;
  color: var(--orange);
  font-size: 12px;
  font-weight: 900;
}

.feature-grid article:nth-child(5) {
  grid-column: span 2;
}

.lab-section {
  display: grid;
  grid-template-columns: minmax(440px, 0.62fr) minmax(0, 1fr);
  gap: 34px;
  align-items: center;
  padding: 72px 0;
}

.lab-copy h2 {
  display: flex;
  flex-wrap: wrap;
  font-size: 56px;
}

.lab-copy h2 span {
  white-space: nowrap;
}

.lab-window {
  overflow: hidden;
  padding: 10px;
  background-color: rgba(255, 255, 255, 0.1);
}

.lab-window img {
  border-radius: 6px;
}

.scene-stage {
  padding: 14px;
  background-color: rgba(7, 18, 16, 0.64);
}

.scene-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}

.scene-tabs button {
  min-height: 54px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 7px;
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.05);
  cursor: pointer;
}

.scene-tabs button.active {
  color: #07120f;
  background: linear-gradient(135deg, var(--green), var(--cyan));
}

.scene-content {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 18px;
  align-items: stretch;
}

.scene-content > div {
  padding: 34px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.055);
}

.scene-content ul {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.scene-content li {
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.scene-content video {
  width: 100%;
  min-height: 420px;
  height: 100%;
  border-radius: 8px;
  object-fit: cover;
  background: #020706;
}

.closing {
  display: flex;
  gap: 30px;
  align-items: center;
  justify-content: space-between;
  padding: 96px 0 120px;
}

.closing div {
  max-width: none;
  flex: 1;
}

.closing h2 {
  font-size: 46px;
  white-space: nowrap;
}

@media (max-width: 980px) {
  .nav {
    width: min(100% - 28px, 720px);
  }

  .nav-links {
    display: none;
  }

  .hero,
  .intro-band,
  .feature-layout,
  .lab-section,
  .scene-content {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 52px;
  }

  .hero-visual {
    min-height: 720px;
  }

  .device {
    left: 50%;
    top: 150px;
    width: 88%;
    max-width: 100%;
    transform: translateX(-50%);
  }

  .data-card {
    left: 0;
    transform: none;
  }

  .live-card {
    right: 0;
    bottom: 0;
  }

  .intro-band,
  .section,
  .lab-section {
    padding: 56px 0;
  }

  .intro-text h2,
  .closing h2 {
    font-size: 42px;
    white-space: normal;
  }

  .lab-copy h2 {
    font-size: 44px;
  }
}

@media (max-width: 640px) {
  .nav-action {
    display: none;
  }

  .hero,
  .intro-band,
  .section,
  .lab-section,
  .closing {
    width: calc(100% - 28px);
  }

  h1 {
    font-size: 56px;
  }

  h2 {
    font-size: 34px;
  }

  .intro-text h2,
  .lab-copy h2,
  .closing h2 {
    font-size: 34px;
  }

  .hero-visual {
    min-height: 560px;
  }

  .data-card,
  .live-card {
    position: relative;
    inset: auto;
    width: 100%;
    margin-bottom: 14px;
  }

  .device {
    position: relative;
    top: auto;
    right: auto;
    margin-top: -20px;
  }

  .glass-strip,
  .feature-grid,
  .scene-tabs {
    grid-template-columns: 1fr;
  }

  .feature-grid article:nth-child(5) {
    grid-column: auto;
  }

  .scene-content > div {
    padding: 24px;
  }

  .closing {
    display: block;
  }
}