html, body {
    height: 100%;
  }
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  margin: 0;
  font-family: 'Noto Serif SC', serif;
  background: #f5f5e8;
  color: #2d3a2e;
}
header {
  background: #21523b;
  color: #eac674;
  display: flex;
  align-items: center;
  padding: 0 40px;
  /* 确保所有页面表头等高 */
  height: 80px;
  justify-content: space-between;
}
.logo {
  height: 60px;
}
nav a {
  color: #eac674;
  text-decoration: none;
  margin: 0 18px;
  font-size: 18px;
  transition: color 0.2s;
}
nav a:hover {
  color: #fffbe6;
}
.banner {
  background: linear-gradient(120deg, #21523b 60%, #eac674 100%);
  color: #fffbe6;
  text-align: center;
  padding: 48px 0 32px 0;
}
.banner img {
  max-width: 320px;
  border-radius: 12px;
  margin-bottom: 18px;
  box-shadow: 0 4px 16px rgba(33,82,59,0.12);
}
.banner h1 {
  font-size: 48px;
  margin: 0 0 10px 0;
  letter-spacing: 4px;
}
.banner p {
  font-size: 22px;
  margin: 0;
}
.featured-tea {
  background: #fffbe6;
  padding: 36px 0;
  text-align: center;
}
.featured-tea h2 {
  color: #21523b;
  font-size: 32px;
  margin-bottom: 24px;
}
.tea-list {
  display: flex;
  justify-content: center;
  gap: 36px;
}
.tea-item {
  background: #f5f5e8;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(33,82,59,0.08);
  padding: 18px 16px;
  width: 180px;
}
.tea-item img {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 10px;
}
.tea-item h3 {
  margin: 8px 0 6px 0;
  color: #21523b;
  font-size: 20px;
}
.tea-item p {
  font-size: 15px;
  color: #5b6d5d;
}
.news {
  background: #f5f5e8;
  padding: 32px 0;
  text-align: center;
}
.news h2 {
  color: #21523b;
  font-size: 28px;
  margin-bottom: 18px;
}
.news ul {
  list-style: none;
  padding: 0;
  margin: 0 auto;
  max-width: 400px;
}
.news li {
  margin: 10px 0;
}
.news a {
  color: #21523b;
  text-decoration: underline;
  font-size: 17px;
}
main {
  flex: 1 0 auto;
}
footer {
  background: #21523b;
  color: #eac674;
  text-align: center;
  padding: 18px 0;
  font-size: 16px;
  letter-spacing: 2px;
  flex-shrink: 0;
  width: 100%;
  position: relative;
}