:root {
  color-scheme: light;
  --bg: #f8f5ef;
  --card: #ffffff;
  --text: #23302a;
  --muted: #66736c;
  --primary: #2f8f6b;
  --primary-dark: #1f6e51;
  --accent: #f2a94b;
  --line: #e5ded2;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, #eef8ef 0, var(--bg) 38rem);
  color: var(--text);
  line-height: 1.75;
}

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

a:hover {
  text-decoration: underline;
}

.wrap {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
}

header {
  padding: 24px 0;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
}

.logo {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #89c99c);
  display: inline-grid;
  place-items: center;
  color: white;
  font-size: 18px;
}

.links {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 15px;
}

.hero {
  padding: 56px 0 36px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  align-items: center;
}

.eyebrow {
  color: var(--primary-dark);
  font-weight: 700;
  margin-bottom: 12px;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(38px, 7vw, 68px);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

h2 {
  margin: 0 0 14px;
  font-size: 28px;
  line-height: 1.25;
}

h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

p {
  margin: 0 0 14px;
}

.lead {
  color: var(--muted);
  font-size: 19px;
  max-width: 680px;
}

.actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--primary);
  color: white;
  font-weight: 700;
}

.button.secondary {
  background: #fff;
  color: var(--primary-dark);
  border: 1px solid var(--line);
}

.phone {
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: 0 24px 70px rgba(38, 55, 44, 0.14);
  border-radius: 32px;
  padding: 22px;
}

.screen {
  border-radius: 24px;
  background: #fbfaf7;
  border: 1px solid #eee7dc;
  padding: 22px;
  min-height: 430px;
}

.progress {
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

.listen {
  height: 190px;
  display: grid;
  place-items: center;
  text-align: center;
}

.listen strong {
  display: block;
  font-size: 26px;
  margin-bottom: 8px;
}

.dots {
  color: var(--primary);
  letter-spacing: 10px;
  font-size: 30px;
}

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

.control {
  border-radius: 16px;
  background: white;
  border: 1px solid var(--line);
  padding: 14px 8px;
  text-align: center;
  font-weight: 700;
}

section {
  padding: 34px 0;
}

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

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

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

.steps {
  counter-reset: step;
}

.step {
  position: relative;
  padding-left: 48px;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 2px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #e8f4ea;
  color: var(--primary-dark);
  display: grid;
  place-items: center;
  font-weight: 800;
}

.doc {
  max-width: 860px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: min(6vw, 42px);
  margin: 24px auto 48px;
}

.doc h1 {
  font-size: clamp(30px, 5vw, 46px);
}

.doc ul {
  padding-left: 1.3em;
}

footer {
  padding: 34px 0 46px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  margin-top: 28px;
  font-size: 14px;
}

@media (max-width: 760px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 24px;
  }

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

  nav {
    align-items: flex-start;
    flex-direction: column;
  }
}