/* ==================== 基础重置 ==================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; color: #1a1a2e; line-height: 1.7; background: #fff; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .25s; }
ul { list-style: none; }

/* ==================== 导航 ==================== */
.navbar {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: rgba(255,255,255,.92); backdrop-filter: blur(12px);
  box-shadow: 0 1px 6px rgba(0,0,0,.06);
  transition: background .3s;
}
.navbar .inner {
  max-width: 1280px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 40px; height: 72px;
}
.logo { font-size: 1.35rem; font-weight: 700; color: #0d47a1; letter-spacing: 2px; }
.logo span { color: #e65100; }
.nav-links { display: flex; gap: 32px; }
.nav-links a {
  font-size: .95rem; font-weight: 500; color: #333;
  position: relative; padding: 4px 0;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0;
  width: 0; height: 2px; background: #0d47a1; transition: width .3s;
}
.nav-links a:hover, .nav-links a.active { color: #0d47a1; }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

/* ==================== Hero ==================== */
.hero {
  position: relative; height: 100vh; min-height: 600px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    linear-gradient(135deg, rgba(13,27,42,.72) 0%, rgba(27,58,92,.60) 40%, rgba(13,71,161,.55) 100%),
    url('images/hero-bridge.jpg') center/cover no-repeat;
}
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 800"><defs><linearGradient id="g" x1="0" y1="0" x2="1" y2="1"><stop offset="0%" stop-color="%230d47a1" stop-opacity=".3"/><stop offset="100%" stop-color="%231a237e" stop-opacity=".1"/></linearGradient></defs><rect fill="url(%23g)" width="1440" height="800"/><path d="M0 600 Q360 500 720 580 T1440 560 V800 H0Z" fill="%23ffffff" fill-opacity=".03"/></svg>') center/cover;
}
.hero-content {
  position: relative; z-index: 2; text-align: center; color: #fff;
  padding: 0 20px; max-width: 900px;
}
.hero-content h1 {
  font-size: 3.2rem; font-weight: 800; letter-spacing: 4px;
  margin-bottom: 16px; text-shadow: 0 2px 20px rgba(0,0,0,.3);
}
.hero-content .subtitle {
  font-size: 1.25rem; opacity: .85; margin-bottom: 40px;
  font-weight: 300; letter-spacing: 1px;
}
.hero-stats {
  display: flex; gap: 48px; justify-content: center; flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-num {
  font-size: 2.8rem; font-weight: 800;
  background: linear-gradient(135deg, #64b5f6, #e3f2fd);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.stat-label { font-size: .85rem; opacity: .7; margin-top: 4px; }
.scroll-hint {
  position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
  color: rgba(255,255,255,.5); font-size: .8rem; text-align: center;
}
.scroll-hint .arrow {
  display: block; width: 24px; height: 24px; margin: 8px auto 0;
  border-right: 2px solid rgba(255,255,255,.4); border-bottom: 2px solid rgba(255,255,255,.4);
  transform: rotate(45deg); animation: bounce 2s infinite;
}
@keyframes bounce { 0%,100%{transform:rotate(45deg) translateY(0)} 50%{transform:rotate(45deg) translateY(8px)} }

/* ==================== 通用 Section ==================== */
.section {
  padding: 100px 40px; max-width: 1280px; margin: 0 auto;
}
.section-title {
  text-align: center; margin-bottom: 60px;
}
.section-title h2 {
  font-size: 2rem; font-weight: 700; color: #0d47a1;
  position: relative; display: inline-block; padding-bottom: 12px;
}
.section-title h2::after {
  content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
  width: 48px; height: 3px; background: #e65100; border-radius: 2px;
}
.section-title p {
  font-size: 1rem; color: #666; margin-top: 12px;
}

/* ==================== 卡片网格 ==================== */
.card-grid {
  display: grid; gap: 28px;
}
.card-grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.card-grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); }
.card-grid.cols-4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.card {
  background: #fff; border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,.06);
  padding: 36px 32px; transition: transform .3s, box-shadow .3s;
  border: 1px solid #f0f0f0;
}
.card:hover { transform: translateY(-6px); box-shadow: 0 12px 36px rgba(0,0,0,.1); }
.card h3 {
  font-size: 1.2rem; font-weight: 700; color: #1a237e;
  margin-bottom: 12px; display: flex; align-items: center; gap: 10px;
}
.card h3 .icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, #e3f2fd, #bbdefb);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; flex-shrink: 0;
}
.card p { font-size: .92rem; color: #555; line-height: 1.8; }
.card .tag {
  display: inline-block; margin-top: 12px; padding: 4px 14px;
  background: #e8f5e9; color: #2e7d32; border-radius: 20px;
  font-size: .8rem; font-weight: 500;
}

/* ==================== 亮点横幅 ==================== */
.banner {
  background: linear-gradient(135deg, #0d47a1, #1565c0);
  color: #fff; padding: 80px 40px; text-align: center;
}
.banner h2 { font-size: 2rem; margin-bottom: 16px; }
.banner p { font-size: 1.05rem; opacity: .85; max-width: 700px; margin: 0 auto; }

/* ==================== 数据展示 ==================== */
.data-row {
  display: flex; gap: 32px; justify-content: center; flex-wrap: wrap;
  margin-top: 48px;
}
.data-item {
  text-align: center; padding: 24px 32px;
  background: rgba(255,255,255,.08); border-radius: 12px;
  min-width: 180px;
}
.data-item .num {
  font-size: 2.2rem; font-weight: 800;
  color: #64b5f6;
}
.data-item .label { font-size: .85rem; opacity: .7; margin-top: 4px; }

/* ==================== 载体/园区卡片 ==================== */
.park-card {
  background: #fff; border-radius: 14px; overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,.07);
  transition: transform .3s, box-shadow .3s;
}
.park-card:hover { transform: translateY(-5px); box-shadow: 0 12px 40px rgba(0,0,0,.12); }
.park-card .img-wrap {
  height: 200px; background: linear-gradient(135deg, #e3f2fd, #bbdefb);
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem;
}
.park-card .body { padding: 28px; }
.park-card .body h3 { font-size: 1.15rem; font-weight: 700; color: #0d47a1; margin-bottom: 10px; }
.park-card .body p { font-size: .9rem; color: #555; }
.park-card .body .meta {
  margin-top: 14px; display: flex; gap: 16px; flex-wrap: wrap;
}
.park-card .body .meta span {
  font-size: .8rem; padding: 3px 12px;
  background: #f5f5f5; border-radius: 16px; color: #666;
}

/* ==================== 图片横幅 ==================== */
.photo-strip {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0;
  height: 320px; overflow: hidden;
}
.photo-strip .strip-img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .6s;
}
.photo-strip .strip-img:hover { transform: scale(1.04); }

.scenic-banner {
  position: relative; height: 400px; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.scenic-banner img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
}
.scenic-banner .overlay {
  position: relative; z-index: 2; text-align: center; color: #fff;
  background: rgba(13,27,42,.50); padding: 48px 60px; border-radius: 16px;
  backdrop-filter: blur(6px);
}
.scenic-banner .overlay h2 { font-size: 2rem; margin-bottom: 12px; }
.scenic-banner .overlay p { font-size: 1.05rem; opacity: .85; }

/* ==================== 带图载体卡片 ==================== */
.park-card .img-wrap img {
  width: 100%; height: 100%; object-fit: cover;
}
.park-card .img-wrap { overflow: hidden; }
.park-card:hover .img-wrap img { transform: scale(1.05); transition: transform .5s; }

/* ==================== 页脚 ==================== */
.footer {
  background: #0d1b2a; color: rgba(255,255,255,.6);
  padding: 48px 40px; text-align: center; font-size: .85rem;
}
.footer a { color: #64b5f6; }
.footer .links { margin-bottom: 16px; display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; }

/* ==================== 面包屑 ==================== */
.breadcrumb {
  padding: 90px 40px 20px; max-width: 1280px; margin: 0 auto;
  font-size: .85rem; color: #999;
}
.breadcrumb a { color: #0d47a1; }
.breadcrumb span { margin: 0 8px; }

/* ==================== 子页 Hero ==================== */
.page-hero {
  position: relative; height: 45vh; min-height: 320px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.page-hero .hero-bg {
  background: linear-gradient(135deg, #0d1b2a 0%, #1b3a5c 50%, #0d47a1 100%);
}
.page-hero .hero-content h1 { font-size: 2.4rem; }

/* ==================== 产业详情 ==================== */
.industry-detail {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
  align-items: start;
}
.industry-detail .text h3 { font-size: 1.4rem; color: #0d47a1; margin-bottom: 16px; }
.industry-detail .text p { font-size: .95rem; color: #444; margin-bottom: 14px; }
.industry-detail .highlights {
  background: #f8f9ff; border-radius: 12px; padding: 28px;
  border-left: 4px solid #0d47a1;
}
.industry-detail .highlights h4 { color: #0d47a1; margin-bottom: 12px; }
.industry-detail .highlights li {
  padding: 6px 0; font-size: .9rem; color: #555;
  border-bottom: 1px dashed #e0e0e0;
}
.industry-detail .highlights li:last-child { border: none; }

/* ==================== 表格 ==================== */
.info-table {
  width: 100%; border-collapse: collapse; margin: 24px 0;
}
.info-table th, .info-table td {
  padding: 14px 20px; text-align: left; font-size: .9rem;
  border-bottom: 1px solid #eee;
}
.info-table th { background: #f5f7ff; color: #0d47a1; font-weight: 600; width: 160px; }
.info-table tr:hover { background: #fafbff; }

/* ==================== 响应式 ==================== */
@media (max-width: 768px) {
  .navbar .inner { padding: 0 20px; }
  .nav-links { gap: 16px; }
  .nav-links a { font-size: .85rem; }
  .hero-content h1 { font-size: 2rem; }
  .hero-stats { gap: 24px; }
  .stat-num { font-size: 2rem; }
  .section { padding: 60px 20px; }
  .industry-detail { grid-template-columns: 1fr; }
  .page-hero { height: 35vh; min-height: 240px; }
}