:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #607086;
  --line: #e7ebf0;
  --blue: #5b9df4;
  --green: #34c759;
  --orange: #ff9500;
  --purple: #af52de;
  --bg: #f7f9fc;
  --card: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}

a {
  color: var(--blue);
  text-decoration: none;
}

.wrap {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.nav {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 800;
  font-size: 22px;
}

.links {
  display: flex;
  gap: 22px;
  font-size: 15px;
}

.hero {
  padding: 72px 0 86px;
  background:
    radial-gradient(circle at 88% 12%, rgba(175, 82, 222, 0.16), transparent 30%),
    radial-gradient(circle at 8% 18%, rgba(91, 157, 244, 0.18), transparent 26%),
    #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 70px;
  align-items: center;
}

.eyebrow {
  color: var(--blue);
  font-weight: 700;
  margin-bottom: 14px;
}

h1 {
  margin: 0;
  font-size: clamp(44px, 7vw, 78px);
  line-height: 1.04;
  letter-spacing: 0;
}

.lead {
  margin: 24px 0 0;
  font-size: 20px;
  color: var(--muted);
  max-width: 660px;
}

.actions {
  display: flex;
  gap: 14px;
  margin-top: 34px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  font-weight: 700;
}

.button.secondary {
  background: #eef4ff;
  color: var(--blue);
}

.phone {
  width: 100%;
  border-radius: 38px;
  border: 10px solid #111827;
  background: #fff;
  box-shadow: 0 28px 60px rgba(23, 32, 51, 0.18);
  overflow: hidden;
}

.phone img {
  display: block;
  width: 100%;
}

.section {
  padding: 74px 0;
}

.section h2 {
  margin: 0 0 14px;
  font-size: 34px;
  line-height: 1.2;
}

.section-intro {
  color: var(--muted);
  margin: 0 0 30px;
  max-width: 720px;
}

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

.feature {
  padding: 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.feature strong {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 28px;
}

.panel h3 {
  margin: 0 0 12px;
  font-size: 22px;
}

.panel p,
.panel li {
  color: var(--muted);
}

.policy {
  max-width: 860px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 38px;
  margin: 34px auto 80px;
}

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

.policy h2 {
  margin-top: 34px;
  font-size: 24px;
}

.footer {
  padding: 36px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 840px) {
  .hero-grid,
  .split {
    grid-template-columns: 1fr;
  }

  .features {
    grid-template-columns: 1fr 1fr;
  }

  .phone {
    max-width: 360px;
    margin: 0 auto;
  }
}

@media (max-width: 560px) {
  .links {
    gap: 12px;
    font-size: 14px;
  }

  .hero {
    padding: 48px 0 58px;
  }

  .features {
    grid-template-columns: 1fr;
  }

  .policy {
    padding: 24px;
  }
}