* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Noto Sans TC", sans-serif;
  line-height: 1.7;
  color: #1f2937;
  background: #f8fafc;
}

a {
  color: inherit;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 20px clamp(20px, 6vw, 72px);
  background: #ffffff;
  border-bottom: 1px solid #e5e7eb;
}

.logo {
  font-weight: 800;
  text-decoration: none;
}

nav {
  display: flex;
  gap: 16px;
}

nav a {
  text-decoration: none;
  color: #4b5563;
}

.container {
  width: min(960px, calc(100% - 40px));
  margin: 0 auto;
  padding: 56px 0;
}

.hero {
  padding: 64px 0;
}

.eyebrow,
.date {
  color: #6b7280;
  font-size: 0.9rem;
}

.hero h1 {
  max-width: 720px;
  font-size: clamp(2.4rem, 7vw, 5rem);
  line-height: 1.05;
  margin: 0 0 24px;
}

.hero p {
  max-width: 640px;
  font-size: 1.15rem;
}

.post-list {
  margin-top: 32px;
}

.post-card {
  padding: 24px;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 20px;
}

.post-card h3 {
  margin-top: 0;
}

.article {
  max-width: 760px;
}

.site-footer {
  padding: 32px;
  text-align: center;
  color: #6b7280;
}