:root {
  color-scheme: dark;
  --bg: #050807;
  --panel: rgba(255, 255, 255, 0.07);
  --line: rgba(255, 255, 255, 0.12);
  --text: #f7fafa;
  --muted: #9aa7ab;
  --accent: #30f0c1;
  --amber: #ffb64a;
  --danger: #ff5b62;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 12%, rgba(48, 240, 193, 0.14), transparent 26rem),
    radial-gradient(circle at 84% 8%, rgba(255, 182, 74, 0.10), transparent 24rem),
    linear-gradient(135deg, #020303, #05130f 50%, #07110f);
  color: var(--text);
}

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

.shell {
  width: min(1080px, calc(100% - 36px));
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.hero {
  min-height: calc(100vh - 88px);
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  gap: 34px;
  align-items: center;
  padding: 26px 0 54px;
}

.eyebrow {
  color: var(--accent);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0;
}

h1 {
  margin: 14px 0 18px;
  font-size: clamp(46px, 7.6vw, 88px);
  line-height: 1.02;
  letter-spacing: 0;
}

.lead {
  margin: 0;
  color: #b8c4c7;
  font-size: 18px;
  line-height: 1.68;
  max-width: 620px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 20px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  font-weight: 900;
}

.button.primary {
  background: linear-gradient(135deg, var(--accent), #12a889);
  color: #04100d;
  border: 0;
}

.button.disabled {
  opacity: 0.58;
  cursor: not-allowed;
  pointer-events: none;
}

.phone {
  border-radius: 34px;
  padding: 16px;
  background: linear-gradient(135deg, rgba(255,255,255,0.16), rgba(255,255,255,0.04));
  border: 1px solid var(--line);
  box-shadow: 0 28px 80px rgba(0,0,0,0.36);
}

.screen {
  border-radius: 28px;
  overflow: hidden;
  background: #080c0d;
  padding: 22px;
  min-height: 610px;
  position: relative;
}

.screen::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 20%, rgba(48,240,193,0.18), transparent 17rem);
}

.screen > * {
  position: relative;
  z-index: 1;
}

.app-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.app-title {
  font-size: 32px;
  font-weight: 900;
}

.pill {
  border-radius: 999px;
  padding: 9px 12px;
  background: rgba(255,255,255,0.08);
  color: #dce5e7;
  font-size: 13px;
  font-weight: 900;
}

.metric-card {
  min-height: 220px;
  border-radius: 28px;
  padding: 22px;
  background: linear-gradient(135deg, rgba(48,240,193,0.13), rgba(255,255,255,0.04));
  border: 1px solid rgba(48,240,193,0.18);
}

.time {
  margin-top: 38px;
  font-size: 56px;
  line-height: 1;
  font-weight: 900;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 14px;
}

.mini {
  min-height: 118px;
  border-radius: 22px;
  padding: 16px;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--line);
}

.mini strong {
  display: block;
  margin-top: 18px;
  font-size: 30px;
}

.muted {
  color: var(--muted);
}

.section {
  padding: 62px 0;
}

.section h2 {
  font-size: clamp(30px, 5vw, 48px);
  margin: 0 0 14px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.card {
  border-radius: 24px;
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
}

.card h3 {
  margin: 0 0 10px;
}

.card p,
.doc p,
.doc li {
  color: var(--muted);
  line-height: 1.75;
}

.download-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: center;
  border-radius: 28px;
  padding: 26px;
  background: linear-gradient(135deg, rgba(48,240,193,0.14), rgba(255,182,74,0.08));
  border: 1px solid rgba(48,240,193,0.22);
}

.doc {
  width: min(860px, calc(100% - 36px));
  margin: 0 auto;
  padding: 42px 0 80px;
}

.doc h1 {
  font-size: clamp(36px, 8vw, 64px);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 30px 0 48px;
  color: #758389;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-links {
  display: inline-flex;
  gap: 16px;
  flex-wrap: wrap;
}

.compact {
  padding: 34px 0 0;
}

@media (max-width: 820px) {
  .shell {
    width: min(100% - 40px, 560px);
  }

  .nav {
    align-items: flex-start;
    padding: 18px 0 8px;
  }

  .brand {
    gap: 10px;
    font-size: 18px;
  }

  .brand img {
    width: 36px;
    height: 36px;
    border-radius: 10px;
  }

  .nav-links {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    gap: 28px;
    padding: 24px 0 44px;
  }

  .eyebrow {
    font-size: 13px;
    line-height: 1.45;
    max-width: 330px;
  }

  h1 {
    margin: 12px 0 16px;
    font-size: clamp(36px, 8vw, 44px);
    line-height: 1.12;
  }

  .lead {
    font-size: 15.5px;
    line-height: 1.72;
    max-width: 36em;
  }

  .actions {
    gap: 10px;
    margin-top: 24px;
  }

  .button {
    min-height: 46px;
    padding: 0 16px;
    border-radius: 14px;
    font-size: 14px;
  }

  .phone {
    border-radius: 28px;
    padding: 10px;
  }

  .screen {
    min-height: 480px;
    border-radius: 22px;
    padding: 18px;
  }

  .app-title {
    font-size: 27px;
  }

  .metric-card {
    min-height: 176px;
    border-radius: 22px;
    padding: 18px;
  }

  .time {
    margin-top: 28px;
    font-size: clamp(40px, 12vw, 56px);
  }

  .mini {
    min-height: 104px;
    border-radius: 18px;
    padding: 14px;
  }

  .mini strong {
    margin-top: 14px;
    font-size: 26px;
  }

  .cards,
  .download-panel {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 44px 0;
  }

  .section h2,
  .doc h1 {
    font-size: clamp(28px, 7vw, 38px);
    line-height: 1.14;
  }

  .doc {
    width: min(100% - 40px, 560px);
    padding: 32px 0 72px;
  }
}

@media (max-width: 420px) {
  .shell,
  .doc {
    width: calc(100% - 32px);
  }

  h1 {
    font-size: 36px;
  }

  .lead {
    font-size: 15px;
  }

  .actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}