:root {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --ink: #121a24;
  --muted: #5f6875;
  --brand: #9b5a12;
  --brand-dark: #7f4709;
  --line: #e4e8ee;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
}

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

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.93);
  backdrop-filter: blur(8px);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand {
  font-weight: 800;
  font-size: 20px;
}

.nav {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-weight: 600;
}

.cta {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 700;
}

.hero {
  padding: 72px 0 38px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.05;
}

.hero p {
  color: var(--muted);
  max-width: 720px;
  font-size: 18px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
}

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

.card p {
  margin: 0;
  color: var(--muted);
}

.span-4 { grid-column: span 4; }
.span-6 { grid-column: span 6; }

.section {
  padding: 26px 0 46px;
}

.section h2 {
  margin: 0 0 16px;
  font-size: 30px;
}

.models {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.model {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}

.model img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}

.model-body {
  padding: 16px;
}

.btn-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.btn {
  display: inline-block;
  border-radius: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  font-weight: 600;
}

.btn.primary {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

.footer {
  margin-top: 44px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding: 18px 0 28px;
  font-size: 14px;
}

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

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

@media (max-width: 900px) {
  .span-4,
  .span-6 {
    grid-column: span 12;
  }

  .nav {
    display: none;
  }

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

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}