* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #f7f5f0;
  color: #252525;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN",
    "Yu Gothic", "YuGothic", Meiryo, sans-serif;
  line-height: 1.8;
}

.container {
  width: min(760px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  min-height: 78vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 0 60px;
}

.label,
.section-label {
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: 0.18em;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: clamp(42px, 8vw, 76px);
  line-height: 1.15;
  letter-spacing: -0.04em;
  font-weight: 700;
}

.lead {
  margin: 32px 0 0;
  font-size: 16px;
  color: #666;
}

.nav {
  display: flex;
  gap: 28px;
  padding: 24px 0;
  border-top: 1px solid #d8d5ce;
  border-bottom: 1px solid #d8d5ce;
}

.nav a {
  color: inherit;
  text-decoration: none;
  font-size: 12px;
  letter-spacing: 0.12em;
}

.nav a:hover {
  opacity: 0.55;
}

section {
  padding: 100px 0;
  border-bottom: 1px solid #d8d5ce;
}

section h2 {
  margin: 0 0 24px;
  font-size: 32px;
  line-height: 1.3;
}

section p:not(.section-label) {
  max-width: 560px;
  margin: 0;
  color: #666;
}

footer {
  display: flex;
  justify-content: space-between;
  padding: 32px 0 50px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: #888;
}

@media (max-width: 600px) {
  .container {
    width: min(100% - 28px, 760px);
  }

  .hero {
    min-height: 72vh;
    padding: 50px 0 40px;
  }

  .lead {
    font-size: 14px;
  }

  section {
    padding: 72px 0;
  }

  .nav {
    gap: 20px;
  }
}