/* 房山项目 */
/* 标题样式 */
.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  font-size: 26px;
  color: #004884;
  display: inline-block;
  position: relative;
  padding-bottom: 10px;
}

.section-title h2::after {
  content: '';
  width: 50px;
  height: 3px;
  background: #ff9800;
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

/* 项目概览 */
.overview {
  padding: 70px 0;
  background: #f9fbfd;
}

.overview-content {
  font-size: 16px;
  text-align: center;
  max-width: 850px;
  margin: 0 auto;
}

/* 图片展示 */
.gallery {
  padding: 60px 0;
}

.gallery-grid {
  display: flex;
  gap: 25px;
  flex-wrap: wrap;
  justify-content: center;
}

.gallery-item {
  width: 48%;
  min-width: 300px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0,0,0,0.06);
}

.gallery-item img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  display: block;
}

.gallery-item p {
  padding: 12px;
  text-align: center;
  background: #fff;
  font-size: 14px;
  color: #666;
}

/* 信息卡片 */
.info {
  padding: 70px 0;
  background: #f9fbfd;
}

.info-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.info-card {
  background: #fff;
  padding: 28px;
  border-radius: 12px;
  box-shadow: 0 3px 12px rgba(0,0,0,0.05);
  border-top: 4px solid #005fc5;
}

.info-card h3 {
  font-size: 17px;
  color: #004884;
  margin-bottom: 12px;
}

.info-card p {
  font-size: 14px;
  color: #555;
}

/* 核心优势 */
.advantages {
  padding: 70px 0;
  background: #fff;
}

.adv-box {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  text-align: center;
}

.adv-item {
  padding: 25px;
}

.adv-item h3 {
  font-size: 17px;
  color: #004884;
  margin-bottom: 10px;
}

.adv-item p {
  font-size: 14px;
  color: #666;
}

/* 悬浮咨询 */
.fixed-service {
  position: fixed;
  right: 20px;
  bottom: 40px;
  z-index: 999;
}

.service-btn {
  background: #ff9800;
  color: #fff;
  border: none;
  padding: 14px 22px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: bold;
  box-shadow: 0 4px 10px rgba(255,152,0,0.2);
  cursor: pointer;
  transition: 0.2s;
}

.service-btn:hover {
  background: #f57c00;
}