:root {
  color-scheme: dark;
  --bg: #081126;
  --bg-soft: #0d1731;
  --panel: rgba(15, 26, 53, 0.82);
  --panel-strong: #111d3f;
  --line: rgba(146, 176, 255, 0.16);
  --text: #f5f8ff;
  --muted: #a9b9df;
  --accent: #65a8ff;
  --accent-strong: #89c0ff;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(101, 168, 255, 0.22), transparent 30%),
    radial-gradient(circle at 85% 18%, rgba(80, 103, 214, 0.28), transparent 22%),
    linear-gradient(180deg, #081126 0%, #0a1430 42%, #081126 100%);
  color: var(--text);
}

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

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

.page-shell {
  width: min(1240px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 56px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 8px 0 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  box-shadow: 0 18px 40px rgba(101, 168, 255, 0.22);
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
}

.brand-sub,
.top-link,
.hero-text,
.hero-points,
.section-kicker,
.highlight-card p,
.screen-card figcaption span,
.closing-panel p {
  color: var(--muted);
}

.top-link {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.95fr);
  gap: 44px;
  align-items: center;
  min-height: calc(100vh - 128px);
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1,
.section-head h2,
.closing-panel h2 {
  margin: 0;
  line-height: 1.04;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 9ch;
  font-size: clamp(48px, 7vw, 82px);
}

.hero-text {
  max-width: 600px;
  margin: 22px 0 0;
  font-size: 18px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 30px 0 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
}

.btn-primary {
  color: #091326;
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
  box-shadow: 0 20px 48px rgba(101, 168, 255, 0.3);
}

.btn-secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 24px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
}

.hero-points li::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 10px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(101, 168, 255, 0.12);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.phone-stage {
  position: relative;
  width: min(100%, 480px);
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(20, 34, 69, 0.9), rgba(9, 18, 38, 0.76));
  box-shadow: var(--shadow);
}

.phone-stage::before {
  content: "";
  position: absolute;
  inset: -16px 24px auto auto;
  width: 120px;
  height: 120px;
  border-radius: 999px;
  background: rgba(101, 168, 255, 0.16);
  filter: blur(8px);
}

.hero-shot {
  position: relative;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.highlights,
.screens,
.closing {
  padding-top: 84px;
}

.section-head {
  max-width: 760px;
  margin-bottom: 26px;
}

.section-head h2,
.closing-panel h2 {
  font-size: clamp(30px, 4vw, 48px);
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.highlight-card,
.screen-card,
.closing-panel {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.highlight-card {
  min-height: 204px;
  padding: 24px;
  border-radius: 18px;
}

.highlight-card h3,
.screen-card figcaption strong {
  margin: 0 0 12px;
  font-size: 22px;
}

.highlight-card p,
.screen-card figcaption span,
.closing-panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
}

.screen-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr 1fr;
  gap: 18px;
  align-items: stretch;
}

.screen-card {
  overflow: hidden;
  border-radius: 20px;
}

.screen-card.tall {
  grid-row: span 2;
}

.screen-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #111a37;
}

.screen-card figcaption {
  display: grid;
  gap: 8px;
  padding: 18px 18px 20px;
  background: rgba(9, 16, 33, 0.78);
}

.closing-panel {
  display: grid;
  gap: 18px;
  max-width: 880px;
  padding: 34px;
  border-radius: 24px;
}

@media (max-width: 1080px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 12px;
  }

  .hero h1 {
    max-width: none;
  }

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

  .screen-card.tall {
    grid-row: auto;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 28px, 1240px);
    padding-top: 18px;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
    padding-bottom: 18px;
  }

  .hero h1 {
    font-size: 42px;
  }

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

  .highlight-grid,
  .screen-grid {
    grid-template-columns: 1fr;
  }

  .phone-stage,
  .highlight-card,
  .screen-card,
  .closing-panel {
    border-radius: 16px;
  }

  .hero-points {
    display: grid;
    gap: 12px;
  }
}