/* Homepage-only refinements: keep long-form issue typography unchanged. */

.hero {
  padding: 82px 0 70px;
}

.hero h1 {
  max-width: 820px;
  font-size: clamp(42px, 5.4vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.045em;
  font-weight: 730;
}

.hero-copy {
  max-width: 720px;
  margin-top: 24px;
  font-size: clamp(17px, 1.8vw, 21px);
  line-height: 1.5;
  letter-spacing: -0.018em;
}

.section {
  padding: 42px 0 66px;
}

.section-heading h2 {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.feature-card {
  padding: clamp(26px, 4vw, 46px);
}

.feature-card h2 {
  font-size: clamp(30px, 4.2vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.036em;
}

.feature-card .feature-copy > p {
  font-size: 17px;
  line-height: 1.55;
}

.metric strong {
  font-size: 31px;
}

.quiet-card {
  min-height: 220px;
  padding: 27px;
}

.quiet-card h3 {
  font-size: 24px;
  letter-spacing: -0.028em;
}

.quiet-card p:last-child {
  font-size: 15px;
  line-height: 1.6;
}

.archive-title {
  font-size: 17px;
}

.site-header nav {
  align-items: center;
  gap: 20px;
}

.site-header nav .nav-system {
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  font-weight: 650;
  background: var(--surface);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: transform .16s ease, background .16s ease;
}

.site-header nav .nav-system:hover {
  color: var(--text);
  transform: translateY(-1px);
  background: var(--surface-solid);
}

@media (max-width: 820px) {
  .hero {
    padding: 64px 0 54px;
  }
}

@media (max-width: 560px) {
  .site-header {
    height: auto;
    min-height: 64px;
    padding: 12px 0;
    gap: 14px;
  }

  .site-header nav {
    gap: 8px;
  }

  .site-header nav a {
    font-size: 12px;
  }

  .site-header nav .nav-system {
    padding: 6px 9px;
  }

  .hero h1 {
    font-size: clamp(38px, 11vw, 48px);
    line-height: 1.04;
  }

  .hero-copy {
    font-size: 17px;
  }

  .feature-card h2 {
    font-size: 32px;
  }
}