body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, "Helvetica Neue", Arial;
  background: #f7f7f7;
  color: #333;
}

header {
  background: #fff;
  color: #000;
  padding: 16px 32px;
  font-size: 20px;
  font-weight: 600;
}

/* 轮播图 */
.carousel {
  position: relative;
  height: 420px;
  overflow: hidden;
  background: #fff;
}

.carousel-track {
  display: flex;
  height: 100%;
  transition: transform 0.6s ease;
}

.carousel-item {
  min-width: 100%;
  background-size: cover;
  background-position: center;
}

/* 圆点 */
.carousel-dots {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
}

.dot.active {
  background: #fff;
}

/* 内容 */
.container {
  max-width: 1100px;
  margin: 48px auto;
  padding: 0 24px;
}

.section {
  background: #fff;
  padding: 32px;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.06);
  margin-bottom: 32px;
}

.section h2 {
  margin-top: 0;
}

.section p {
  line-height: 1.8;
  color: #555;
}

footer {
  text-align: center;
  padding: 24px;
  font-size: 14px;
  color: #777;
}