.seo-opening {
  font-family: -apple-system, BlinkMacSystemFont, "Noto Sans TC",
               "PingFang TC", "Microsoft JhengHei", sans-serif;
  line-height: 1.8;
  color: #333;
  padding: 1rem;
}

/* ===== 麵包屑 ===== */
nav {
  font-size: 14px;
  margin: 0.5rem auto 1rem;
  max-width: 1000px;
  color: #666;
}

nav a {
  color: #c0392b;
  text-decoration: none;
}

nav a:hover {
  text-decoration: underline;
}

nav span {
  color: #888;
}

/* ===== 文章主體 ===== */
.seo-opening.container {
  max-width: 1000px;
  margin: 0 auto;
}

/* H1 */
.seo-opening h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.4;
}

/* 引言 */
.seo-opening .lead {
  font-size: 1.05rem;
  color: #555;
  background: #fafafa;
  border-left: 4px solid #e74c3c;
  padding: 0.75rem 1rem;
  margin-bottom: 2rem;
}

/* H2 */
.seo-opening h2 {
  font-size: 1.4rem;
  margin: 2.5rem 0 1rem;
  padding-left: 0.5rem;
  border-left: 4px solid #e74c3c;
}

/* 內文 */
.seo-opening p {
  margin-bottom: 1rem;
}

.seo-opening ul {
  padding-left: 1.2rem;
  margin-bottom: 1.5rem;
}

.seo-opening li {
  margin-bottom: 0.5rem;
  width:100%;
  display:block;
}

/* ===== 商品推薦區 ===== */
.seo-opening section ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
}

.seoImg {
  border: 1px solid #eee;
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.seoImg:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.08);
}

.seoImg img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.seoImg div {
  padding: 0.6rem;
  font-size: 0.95rem;
  text-align: center;
  color: #333;
}

/* ===== FAQ ===== */
.faq-section {
  margin-top: 1rem;
}

.faq-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.faq-item {
  border: 1px solid #ddd;
  border-radius: 6px;
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.faq-question {
  cursor: pointer;
  padding: 0.75rem 1rem;
  background: #f9f9f9;
  font-weight: 600;
}

.faq-question:hover {
  background: #f1f1f1;
}

.faq-answer {
  padding: 0.75rem 1rem;
  background: #fff;
}

.faq-list {
  padding-left: 1.2rem;
}

/* ===== 內部連結 ===== */
.internal-links {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid #eee;
}

.internal-links ul {
  list-style: disc;
}

.internal-links a {
  color: #c0392b;
  text-decoration: none;
}

.internal-links a:hover {
  text-decoration: underline;
}

/* ===== RWD ===== */
@media (max-width: 768px) {
  .seo-opening h1 {
    font-size: 1.6rem;
  }

  .seo-opening h2 {
    font-size: 1.25rem;
  }

  nav {
    font-size: 13px;
  }
}