:root {
  --bg: #f6f1ea;
  --card: #ffffff;
  --text: #2b2622;
  --muted: #6b625a;
  --accent: #7a4b2a;
  --accent-soft: #efe3d6;
  --line: #e3d9cd;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  line-height: 1.85;
  font-size: 17px;
}

a { color: var(--accent); }

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 20px;
}

header.site {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

header.site .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 16px;
  padding-bottom: 16px;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}

nav a {
  margin-left: 18px;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
}

nav a:hover { color: var(--accent); }

.hero {
  padding: 64px 0 48px;
}

.hero h1 {
  font-size: 2.1rem;
  line-height: 1.4;
  margin: 0 0 16px;
}

.hero p {
  color: var(--muted);
  max-width: 620px;
  margin: 0 0 24px;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 12px 26px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
}

.btn:hover { opacity: 0.9; }

section { padding: 40px 0; }

section h2 {
  font-size: 1.4rem;
  margin: 0 0 20px;
  padding-left: 12px;
  border-left: 4px solid var(--accent);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

a.card {
  display: block;
  text-decoration: none;
  color: inherit;
}

a.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(60, 40, 20, 0.08);
}

.card h3 { margin: 0 0 8px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }

article.post {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 32px 28px;
  margin: 32px 0 48px;
}

article.post h1 {
  font-size: 1.8rem;
  line-height: 1.45;
  margin: 0 0 8px;
}

article.post h2 {
  border: none;
  padding: 0;
  font-size: 1.25rem;
  margin: 36px 0 12px;
  color: var(--accent);
}

article.post .meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.note {
  background: var(--accent-soft);
  border-radius: 8px;
  padding: 14px 18px;
  font-size: 0.95rem;
  margin: 24px 0;
}

.cta {
  background: var(--accent-soft);
  border-radius: 10px;
  padding: 24px;
  margin-top: 36px;
  text-align: center;
}

.cta p { margin: 0 0 14px; }

footer.site {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 600px) {
  .hero h1 { font-size: 1.6rem; }
  article.post { padding: 24px 18px; }
  nav a { margin-left: 12px; }
}