* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  color: #1f2933;
  background: #fbfaf6;
  line-height: 1.6;
}

.nav {
  width: 100%;
  padding: 22px 7%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(251, 250, 246, 0.92);
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid #ece7dc;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.1rem;
}

.logo {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  background: linear-gradient(135deg, #7cc7b8, #f2c94c);
  color: white;
  display: grid;
  place-items: center;
  font-weight: 900;
}

.nav a {
  color: #334155;
  text-decoration: none;
  margin-left: 22px;
  font-weight: 600;
}

.hero {
  min-height: 82vh;
  padding: 80px 7%;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 44px;
  align-items: center;
}

.eyebrow {
  color: #0f8f7f;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 800;
  margin-bottom: 12px;
}

h1 {
  font-size: clamp(2.35rem, 5vw, 4.7rem);
  line-height: 1.03;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
}

.lead {
  font-size: 1.18rem;
  max-width: 680px;
  color: #475569;
}

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

.btn, button {
  border: none;
  border-radius: 999px;
  padding: 14px 22px;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}

.primary, button {
  background: #0f8f7f;
  color: white;
}

.secondary {
  background: #fff;
  color: #0f8f7f;
  border: 1px solid #d8efe9;
}

.hero-card {
  background: #fff;
  border: 1px solid #ece7dc;
  padding: 38px;
  border-radius: 34px;
  box-shadow: 0 24px 70px rgba(31, 41, 51, 0.08);
  position: relative;
  overflow: hidden;
}

.hero-card h2 {
  font-size: 2rem;
  line-height: 1.15;
  margin-bottom: 18px;
  position: relative;
}

.hero-card p {
  color: #64748b;
  position: relative;
}

.circle {
  position: absolute;
  border-radius: 50%;
  opacity: 0.5;
}

.c1 { width: 160px; height: 160px; background: #7cc7b8; right: -40px; top: -40px; }
.c2 { width: 120px; height: 120px; background: #f2c94c; left: -30px; bottom: -30px; }
.c3 { width: 90px; height: 90px; background: #f7a6b8; right: 60px; bottom: 40px; }

.section {
  padding: 86px 7%;
}

.section h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.section p {
  max-width: 850px;
  color: #52606d;
  font-size: 1.06rem;
}

.problem, .about {
  background: #eef8f5;
}

.grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 40px;
}

.cards, .product-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.cards article, .product-list div {
  background: #fff;
  border: 1px solid #ece7dc;
  border-radius: 26px;
  padding: 26px;
}

h3 {
  font-size: 1.35rem;
  margin-bottom: 10px;
}

.products {
  background: #fffaf0;
}

.contact {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  background: #fff;
}

form {
  display: grid;
  gap: 14px;
}

input, textarea {
  width: 100%;
  border: 1px solid #d8ded8;
  border-radius: 18px;
  padding: 16px;
  font: inherit;
  background: #fbfaf6;
}

footer {
  padding: 28px 7%;
  background: #1f2933;
  color: #fff;
  text-align: center;
}

@media (max-width: 820px) {
  .nav {
    align-items: flex-start;
    gap: 14px;
    flex-direction: column;
  }

  .nav a {
    margin-left: 0;
    margin-right: 14px;
  }

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

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

  .hero {
    padding-top: 54px;
  }
}