:root {
  color-scheme: dark;
  --vita-blue: #1476ff;
  --vita-blue-deep: #0856d8;
  --vita-cyan: #16d4e3;
  --vita-lime: #b9f450;
  --vita-coral: #ff5f7a;
  --ink: #07111f;
  --ink-2: #0d1c2d;
  --surface: rgba(255, 255, 255, 0.08);
  --surface-strong: rgba(255, 255, 255, 0.14);
  --line: rgba(255, 255, 255, 0.16);
  --text: #f7fbff;
  --muted: rgba(229, 241, 255, 0.72);
  --soft: rgba(229, 241, 255, 0.52);
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.36);
  --radius-card: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  content: "";
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(145deg, #06101d 0%, #0a1b2e 48%, #06111f 100%);
  background-size: 64px 64px, 64px 64px, auto;
}

body::after {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background:
    linear-gradient(110deg, rgba(20, 118, 255, 0.22), transparent 34%),
    linear-gradient(250deg, rgba(185, 244, 80, 0.1), transparent 40%),
    linear-gradient(0deg, rgba(22, 212, 227, 0.08), transparent 46%);
}

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

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

button {
  font: inherit;
}

.site-header {
  position: fixed;
  top: 0;
  left: 50%;
  z-index: 20;
  display: grid;
  width: min(1160px, calc(100% - 32px));
  min-height: 68px;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 18px;
  border: 1px solid transparent;
  border-radius: 0 0 8px 8px;
  padding: 12px 0;
  transform: translateX(-50%);
  transition: background 0.2s ease, border-color 0.2s ease, padding 0.2s ease, box-shadow 0.2s ease;
}

.site-header.scrolled,
body.nav-open .site-header {
  border-color: var(--line);
  background: rgba(7, 17, 31, 0.82);
  padding: 10px 14px;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 14px 14px 14px 5px;
  background: linear-gradient(145deg, var(--vita-blue), var(--vita-cyan));
  box-shadow: inset 0 -8px 16px rgba(255, 255, 255, 0.25), 0 10px 28px rgba(20, 118, 255, 0.34);
}

.brand-mark span {
  width: 17px;
  height: 8px;
  border-radius: 999px;
  background: #ffffff;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: clamp(18px, 3vw, 34px);
  color: var(--muted);
  font-size: 14px;
}

.site-nav a {
  transition: color 0.18s ease;
}

.site-nav a:hover {
  color: #ffffff;
}

.header-action,
.btn {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0 18px;
  color: #ffffff;
  font-weight: 700;
  white-space: nowrap;
}

.header-action,
.btn.primary {
  background: linear-gradient(135deg, var(--vita-blue), var(--vita-cyan));
  box-shadow: 0 14px 36px rgba(20, 118, 255, 0.26);
}

.btn.secondary {
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  backdrop-filter: blur(12px);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  place-items: center;
}

.nav-toggle span {
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.hero {
  position: relative;
  display: grid;
  min-height: 92svh;
  align-items: end;
  overflow: hidden;
  padding: 118px max(24px, calc((100vw - 1160px) / 2)) 58px;
}

.hero-media {
  position: absolute;
  right: max(-16vw, -260px);
  bottom: max(5vh, 54px);
  width: min(980px, 70vw);
  opacity: 0.9;
  filter: drop-shadow(0 26px 62px rgba(20, 118, 255, 0.28));
}

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 17, 31, 0.98) 0%, rgba(7, 17, 31, 0.78) 38%, rgba(7, 17, 31, 0.16) 76%),
    linear-gradient(0deg, var(--ink) 0%, rgba(7, 17, 31, 0) 36%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(640px, 100%);
  padding-bottom: 90px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--vita-lime);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  color: #ffffff;
  font-size: clamp(76px, 13vw, 178px);
  line-height: 0.82;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 600px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(18px, 2.2vw, 24px);
  line-height: 1.72;
}

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

.hero-metrics {
  position: relative;
  z-index: 2;
  display: grid;
  width: min(920px, 100%);
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.hero-metrics div {
  min-height: 94px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.08);
  padding: 18px;
  backdrop-filter: blur(14px);
}

.hero-metrics strong {
  display: block;
  margin-bottom: 8px;
  color: #ffffff;
  font-size: 26px;
}

.hero-metrics span {
  color: var(--muted);
  font-size: 13px;
}

.section {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
  padding: 92px 0;
}

.section-head {
  display: grid;
  max-width: 820px;
  gap: 12px;
  margin-bottom: 28px;
}

.section-head.compact {
  max-width: 700px;
}

.section-head h2,
.experience-copy h2,
.map-copy h2,
.download-section h2 {
  margin: 0;
  color: #ffffff;
  font-size: clamp(34px, 4.8vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
}

.section-head p:not(.eyebrow),
.experience-copy p,
.map-copy p,
.download-section p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.product-card,
.security-grid article,
.growth-copy article {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.07);
  padding: 22px;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.product-card.active,
.product-card:hover {
  border-color: rgba(22, 212, 227, 0.54);
  background:
    linear-gradient(145deg, rgba(20, 118, 255, 0.25), rgba(22, 212, 227, 0.08)),
    rgba(255, 255, 255, 0.08);
  transform: translateY(-4px);
}

.card-icon {
  display: inline-flex;
  min-width: 38px;
  height: 28px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(185, 244, 80, 0.14);
  color: var(--vita-lime);
  font-size: 12px;
  font-weight: 900;
}

.product-card h3,
.security-grid h3,
.growth-copy h3 {
  margin: 20px 0 10px;
  color: #ffffff;
  font-size: 20px;
}

.product-card p,
.security-grid p,
.growth-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.experience-section,
.map-section {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(420px, 1fr);
  gap: 48px;
  align-items: center;
}

.feature-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.feature-list span {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  padding: 9px 12px;
  color: rgba(247, 251, 255, 0.86);
  font-size: 13px;
}

.interface-stage {
  position: relative;
  min-height: 620px;
}

.phone {
  overflow: hidden;
  border: 10px solid #111c2c;
  border-radius: 34px;
  background: #f7f9fc;
  color: #132033;
  box-shadow: var(--shadow);
}

.phone-main {
  position: absolute;
  right: 16%;
  top: 0;
  width: min(360px, 70vw);
  height: 608px;
}

.phone-top,
.chat-head,
.chat-input {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
}

.phone-top {
  color: #111827;
  font-size: 13px;
  font-weight: 800;
}

.phone-signal {
  width: 42px;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(90deg, #111827 46%, transparent 46% 58%, #111827 58%);
}

.chat-head {
  border-bottom: 1px solid #e8edf4;
  text-align: center;
}

.chat-head small {
  display: block;
  margin-top: 4px;
  color: #9aa8ba;
}

.back,
.dots {
  color: #132033;
  font-size: 30px;
  line-height: 1;
}

.chat-body {
  display: grid;
  gap: 18px;
  padding: 32px 18px;
}

.time-chip {
  justify-self: center;
  border-radius: 6px;
  background: #eef2f7;
  padding: 5px 10px;
  color: #9aa8ba;
  font-size: 12px;
}

.bubble {
  max-width: 78%;
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 15px;
  line-height: 1.5;
}

.bubble-me {
  justify-self: end;
  background: #c8e6ff;
}

.bubble-other {
  background: #f0f2f6;
}

.chat-input {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  border-top: 1px solid #e8edf4;
  background: #f1f4f8;
}

.chat-input span {
  width: 72%;
  height: 34px;
  border-radius: 999px;
  background: #ffffff;
}

.chat-input strong {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 2px solid #111827;
  border-radius: 50%;
  font-size: 24px;
}

.panel-preview {
  position: absolute;
  right: 0;
  bottom: 38px;
  width: min(420px, 75vw);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-card);
  background: rgba(11, 24, 40, 0.72);
  padding: 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.panel-bar {
  display: flex;
  gap: 7px;
}

.panel-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--vita-coral);
}

.panel-bar span:nth-child(2) {
  background: var(--vita-lime);
}

.panel-bar span:nth-child(3) {
  background: var(--vita-cyan);
}

.panel-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
  color: var(--muted);
}

.panel-row.strong {
  color: #ffffff;
}

.panel-row b {
  color: var(--vita-lime);
}

.panel-chart {
  display: flex;
  height: 150px;
  align-items: end;
  gap: 10px;
  margin-top: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  padding-bottom: 10px;
}

.panel-chart span {
  flex: 1;
  border-radius: 6px 6px 0 0;
  background: linear-gradient(180deg, var(--vita-cyan), var(--vita-blue));
}

.growth-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(340px, 0.9fr);
  gap: 24px;
  align-items: stretch;
}

.growth-visual {
  min-height: 480px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background:
    linear-gradient(140deg, rgba(20, 118, 255, 0.2), rgba(255, 255, 255, 0.04)),
    rgba(255, 255, 255, 0.06);
  padding: 20px;
}

.dashboard-shell {
  display: grid;
  height: 100%;
  grid-template-columns: 76px 1fr;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-card);
  background: rgba(247, 251, 255, 0.94);
  box-shadow: var(--shadow);
}

.dash-sidebar {
  display: grid;
  align-content: start;
  gap: 14px;
  border-right: 1px solid #e6ebf2;
  background: #ffffff;
  padding: 22px;
}

.dash-sidebar span {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: #e9f3ff;
}

.dash-sidebar span:first-child {
  background: linear-gradient(135deg, var(--vita-blue), var(--vita-cyan));
}

.dash-main {
  display: grid;
  grid-template-rows: 62px auto 1fr;
  gap: 18px;
  padding: 20px;
}

.dash-top {
  border-radius: 8px;
  background: #ffffff;
}

.dash-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.dash-cards span,
.dash-table span {
  border-radius: 8px;
  background: #ffffff;
}

.dash-cards span {
  min-height: 92px;
}

.dash-table {
  display: grid;
  gap: 10px;
}

.dash-table span {
  min-height: 46px;
}

.growth-copy {
  display: grid;
  gap: 12px;
}

.growth-copy article {
  min-height: 150px;
}

.security-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.security-grid article {
  min-height: 238px;
}

.security-grid span {
  color: var(--vita-cyan);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.map-section {
  align-items: start;
}

.product-map {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: #02060c;
  box-shadow: var(--shadow);
}

.product-map img {
  width: 100%;
  height: min(680px, 72vh);
  object-fit: cover;
  object-position: top center;
}

.download-section {
  display: flex;
  width: min(1160px, calc(100% - 32px));
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin: 28px auto 32px;
  border: 1px solid rgba(22, 212, 227, 0.32);
  border-radius: var(--radius-card);
  background:
    linear-gradient(135deg, rgba(20, 118, 255, 0.2), rgba(185, 244, 80, 0.08)),
    rgba(255, 255, 255, 0.08);
  padding: clamp(26px, 5vw, 52px);
}

.download-section h2 {
  max-width: 760px;
}

.download-section p {
  max-width: 620px;
  margin-top: 14px;
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (max-width: 1080px) {
  .product-grid,
  .security-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .experience-section,
  .map-section,
  .growth-layout {
    grid-template-columns: 1fr;
  }

  .interface-stage {
    min-height: 660px;
  }

  .phone-main {
    left: 50%;
    right: auto;
    transform: translateX(-58%);
  }

  .panel-preview {
    right: 6%;
  }
}

@media (max-width: 820px) {
  .site-header {
    grid-template-columns: auto 1fr auto;
    width: calc(100% - 24px);
  }

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

  .nav-toggle {
    display: grid;
    gap: 4px;
  }

  body.nav-open .site-nav {
    position: absolute;
    top: 64px;
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: rgba(7, 17, 31, 0.96);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
  }

  body.nav-open .site-nav a {
    min-height: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 14px;
  }

  .hero {
    min-height: 88svh;
    padding: 104px 16px 34px;
  }

  .hero-media {
    right: -52vw;
    bottom: 22%;
    width: 1120px;
    max-width: none;
    opacity: 0.46;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(7, 17, 31, 0.98), rgba(7, 17, 31, 0.64)),
      linear-gradient(0deg, var(--ink) 0%, rgba(7, 17, 31, 0) 34%);
  }

  .hero-content {
    padding-bottom: 42px;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .section {
    width: calc(100% - 32px);
    padding: 66px 0;
  }

  .product-grid,
  .security-grid,
  .dash-cards {
    grid-template-columns: 1fr;
  }

  .growth-visual {
    min-height: 420px;
  }

  .dashboard-shell {
    grid-template-columns: 54px 1fr;
  }

  .dash-sidebar {
    padding: 14px 10px;
  }

  .dash-sidebar span {
    width: 28px;
    height: 28px;
  }

  .download-section {
    align-items: flex-start;
    flex-direction: column;
    width: calc(100% - 32px);
  }
}

@media (max-width: 560px) {
  .hero h1 {
    font-size: 78px;
  }

  .hero-copy {
    font-size: 17px;
  }

  .hero-actions,
  .download-actions {
    display: grid;
    width: 100%;
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }

  .interface-stage {
    min-height: 590px;
  }

  .phone-main {
    width: min(312px, 92vw);
    height: 548px;
    transform: translateX(-50%);
  }

  .panel-preview {
    right: 0;
    bottom: 8px;
    width: min(340px, 92vw);
  }

  .product-map img {
    height: 460px;
  }
}