:root {
  color-scheme: light;
  font-family: Inter, "Microsoft YaHei", sans-serif;
  color: #17201b;
  background: #f3f5ef;
}

* { box-sizing: border-box; }

body { margin: 0; }

.page-shell {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0;
  border-bottom: 1px solid #d9ded5;
}

.brand, .nav-link { color: inherit; text-decoration: none; }
.brand { font-size: 18px; font-weight: 700; }
.nav-link { color: #526058; font-size: 14px; }
.nav-link:hover { color: #d9653b; }

.hero { max-width: 760px; padding: 112px 0 120px; }
.eyebrow, .number { color: #d9653b; font-size: 12px; font-weight: 700; letter-spacing: 2px; }
h1 { max-width: 720px; margin: 18px 0; font-size: clamp(42px, 7vw, 76px); line-height: 1.06; letter-spacing: 0; }
.intro { max-width: 560px; margin: 0 0 34px; color: #526058; font-size: 18px; line-height: 1.8; }
.button { display: inline-flex; align-items: center; gap: 18px; padding: 14px 18px; color: #fff; background: #17201b; text-decoration: none; }
.button:hover { background: #d9653b; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; padding: 28px 0 72px; border-top: 1px solid #d9ded5; }
.features article { min-height: 160px; }
h2 { margin: 22px 0 10px; font-size: 22px; }
.features p { margin: 0; color: #657168; line-height: 1.7; }

@media (max-width: 700px) {
  .page-shell { width: min(100% - 32px, 560px); }
  .hero { padding: 78px 0 84px; }
  .intro { font-size: 16px; }
  .features { grid-template-columns: 1fr; gap: 28px; padding-bottom: 48px; }
}