/* ============ 武汉大学科技园官网 · 全站样式 ============ */
:root {
  --green-dark: #1E5B3E;
  --green: #2E7D52;
  --green-light: #E8F3EC;
  --blue: #1B6FB3;
  --ink: #2B2B2B;
  --gray: #6B7570;
  --bg: #F5F7F6;
  --card-shadow: 0 4px 18px rgba(0, 0, 0, 0.08);
  --radius: 8px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Microsoft YaHei", "Source Han Sans SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: #fff;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { width: 1200px; max-width: 92%; margin: 0 auto; }

/* ---------- 顶部通栏 ---------- */
.topbar { background: var(--green-dark); color: #fff; font-size: 14px; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; height: 36px; }
.topbar .hotline { display: flex; align-items: center; gap: 6px; }
.topbar .hotline strong { font-size: 16px; letter-spacing: 0.5px; }
.topbar .hotline svg { width: 15px; height: 15px; fill: #FFD54F; }

/* ---------- 头部 + 导航 ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  transition: box-shadow 0.25s;
}
.header.scrolled { box-shadow: 0 2px 14px rgba(0, 0, 0, 0.1); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.header .logo img { height: 48px; width: auto; }
.nav { display: flex; gap: 8px; }
.nav a {
  padding: 10px 20px; font-size: 16px; font-weight: 500;
  color: var(--ink); border-radius: 6px; position: relative;
  transition: color 0.2s;
}
.nav a:hover { color: var(--green); }
.nav a.active { color: var(--green); font-weight: 700; }
.nav a.active::after {
  content: ""; position: absolute; left: 20px; right: 20px; bottom: 2px;
  height: 3px; background: var(--green); border-radius: 2px;
}
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 3px; background: var(--green-dark); margin: 5px 0; border-radius: 2px; transition: 0.25s; }

/* ---------- Banner ---------- */
.banner { position: relative; overflow: hidden; }
.banner-slide { display: none; position: relative; }
.banner-slide.active { display: block; }
.banner-slide img { width: 100%; height: 480px; object-fit: cover; }
.banner-slide .overlay {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(20, 60, 40, 0.72) 0%, rgba(20, 60, 40, 0.35) 55%, rgba(20, 60, 40, 0.05) 100%);
  display: flex; flex-direction: column; justify-content: center;
}
.banner-slide .overlay .container h1 { color: #fff; font-size: 42px; letter-spacing: 4px; margin-bottom: 12px; }
.banner-slide .overlay .container p { color: rgba(255, 255, 255, 0.92); font-size: 20px; letter-spacing: 2px; margin-bottom: 28px; }
.banner-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%; border: none; cursor: pointer;
  background: rgba(255, 255, 255, 0.35); color: #fff; font-size: 20px;
  transition: background 0.2s; z-index: 5;
}
.banner-arrow:hover { background: rgba(255, 255, 255, 0.6); }
.banner-arrow.prev { left: 24px; }
.banner-arrow.next { right: 24px; }
.banner-dots { position: absolute; bottom: 18px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 5; }
.banner-dots button { width: 12px; height: 12px; border-radius: 50%; border: none; background: rgba(255,255,255,0.5); cursor: pointer; }
.banner-dots button.on { background: #fff; width: 28px; border-radius: 6px; }

/* ---------- 内页 Banner ---------- */
.page-banner {
  height: 300px; background-size: cover; background-position: center;
  position: relative; display: flex; align-items: center;
}
.page-banner::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(20,60,40,0.75), rgba(20,60,40,0.25)); }
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 { color: #fff; font-size: 36px; letter-spacing: 3px; }
.page-banner p { color: rgba(255,255,255,0.85); font-size: 16px; letter-spacing: 1px; margin-top: 6px; }

/* ---------- 面包屑 ---------- */
.breadcrumb { background: var(--bg); border-bottom: 1px solid #E4EAE6; font-size: 14px; color: var(--gray); }
.breadcrumb .container { display: flex; align-items: center; gap: 8px; height: 44px; }
.breadcrumb a:hover { color: var(--green); }

/* ---------- 内页布局（左侧子导航） ---------- */
.page-body { display: flex; gap: 32px; padding: 40px 0 64px; align-items: flex-start; }
.side-nav { width: 220px; flex-shrink: 0; background: #fff; border-radius: var(--radius); box-shadow: var(--card-shadow); overflow: hidden; }
.side-nav .side-title { background: var(--green-dark); color: #fff; padding: 16px 20px; font-size: 18px; font-weight: 700; letter-spacing: 2px; }
.side-nav a { display: block; padding: 14px 20px; font-size: 15px; border-bottom: 1px solid #F0F3F1; transition: 0.2s; }
.side-nav a:hover { color: var(--green); background: var(--green-light); }
.side-nav a.active { background: var(--green); color: #fff; font-weight: 700; }
.main-content { flex: 1; min-width: 0; }

/* ---------- 通用区块 ---------- */
.section { padding: 64px 0; }
.section.alt { background: var(--bg); }
.sec-head { text-align: center; margin-bottom: 40px; }
.sec-head h2 { font-size: 30px; color: var(--green-dark); letter-spacing: 2px; }
.sec-head .en { color: #9DB2A6; font-size: 14px; letter-spacing: 3px; text-transform: uppercase; margin-top: 4px; }
.sec-head .line { width: 56px; height: 4px; background: var(--green); margin: 14px auto 0; border-radius: 2px; }

.btn {
  display: inline-block; padding: 12px 36px; border-radius: 24px;
  font-size: 16px; font-weight: 600; letter-spacing: 1px;
  transition: 0.25s; cursor: pointer; border: none;
}
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-dark); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(46,125,82,0.35); }
.btn-ghost { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.85); }
.btn-ghost:hover { background: rgba(255,255,255,0.15); }

/* ---------- 首页：园区简介 ---------- */
.intro-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 44px; align-items: center; }
.intro-grid h3 { font-size: 24px; color: var(--green-dark); margin-bottom: 16px; }
.intro-grid p { color: #4A554F; text-align: justify; margin-bottom: 12px; }
.intro-grid .pic img { border-radius: var(--radius); box-shadow: var(--card-shadow); }
.stat-row { display: flex; gap: 20px; margin-top: 26px; }
.stat-card { flex: 1; background: var(--green-light); border-radius: var(--radius); text-align: center; padding: 18px 8px; }
.stat-card b { display: block; font-size: 28px; color: var(--green-dark); }
.stat-card span { font-size: 13px; color: var(--gray); }

/* ---------- 首页：产业格局 ---------- */
.industry-main {
  background: linear-gradient(135deg, var(--green-dark), var(--green));
  color: #fff; border-radius: var(--radius); padding: 32px 40px;
  display: flex; align-items: center; gap: 32px; margin-bottom: 24px;
  box-shadow: var(--card-shadow);
}
.industry-main .tag { background: rgba(255,255,255,0.18); border-radius: 6px; padding: 6px 14px; font-size: 14px; white-space: nowrap; }
.industry-main h3 { font-size: 26px; letter-spacing: 1px; margin-bottom: 6px; }
.industry-main p { color: rgba(255,255,255,0.88); font-size: 15px; }
.industry-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 12px; margin-bottom: 24px; }
.industry-grid .item {
  background: #fff; border: 1px solid #E1E9E4; border-radius: var(--radius);
  text-align: center; padding: 18px 6px; font-size: 15px; color: var(--ink);
  transition: 0.25s;
}
.industry-grid .item:hover { border-color: var(--green); color: var(--green); transform: translateY(-3px); box-shadow: var(--card-shadow); }
.base-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.base-card {
  display: flex; align-items: center; gap: 16px;
  background: #fff; border-left: 5px solid var(--blue);
  border-radius: var(--radius); padding: 20px 24px; box-shadow: var(--card-shadow);
}
.base-card .medal { font-size: 30px; }
.base-card b { display: block; font-size: 17px; color: var(--ink); }
.base-card span { font-size: 13px; color: var(--gray); }

/* ---------- 首页：视频区 ---------- */
.video-sec { background: var(--green-dark); }
.video-sec .sec-head h2, .video-sec .sec-head .en { color: #fff; }
.video-sec .sec-head .en { color: rgba(255,255,255,0.55); }
.video-wrap { max-width: 860px; margin: 0 auto; border-radius: 12px; overflow: hidden; box-shadow: 0 12px 40px rgba(0,0,0,0.35); }
.video-wrap video { width: 100%; display: block; }

/* ---------- 首页：楼宇卡片 ---------- */
.build-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.build-card {
  background: #fff; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--card-shadow); transition: 0.3s; display: block;
}
.build-card:hover { transform: translateY(-6px); box-shadow: 0 10px 28px rgba(30,91,62,0.2); }
.build-card img { width: 100%; height: 180px; object-fit: cover; }
.build-card .info { padding: 18px 20px; }
.build-card .info b { font-size: 19px; color: var(--green-dark); }
.build-card .info p { font-size: 13px; color: var(--gray); margin-top: 6px; }

/* ---------- 首页：企业滚动墙 ---------- */
.logo-wall { overflow: hidden; position: relative; }
.logo-track { display: flex; gap: 26px; animation: scrollX 22s linear infinite; width: max-content; }
.logo-track:hover { animation-play-state: paused; }
.logo-track .ent {
  background: #fff; border: 1px solid #E1E9E4; border-radius: var(--radius);
  padding: 18px 30px; display: flex; align-items: center; gap: 14px; min-width: 300px;
}
.logo-track .ent img { height: 60px; width: auto; border-radius: 4px; }
.logo-track .ent b { font-size: 15px; color: var(--ink); }
@keyframes scrollX { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- 楼宇信息页 / 通用卡片 ---------- */
.detail-card {
  background: #fff; border-radius: var(--radius); box-shadow: var(--card-shadow);
  display: grid; grid-template-columns: 340px 1fr; overflow: hidden; margin-bottom: 28px;
}
.detail-card img { width: 100%; height: 100%; object-fit: cover; }
.detail-card .txt { padding: 28px 32px; }
.detail-card .txt h3 { font-size: 22px; color: var(--green-dark); margin-bottom: 12px; }
.detail-card .txt p { color: #4A554F; text-align: justify; margin-bottom: 8px; font-size: 15px; }
.spec-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.spec-row span { background: var(--green-light); color: var(--green-dark); font-size: 13px; padding: 5px 12px; border-radius: 14px; }

/* ---------- 入园流程 ---------- */
.doc-box { background: #fff; border-radius: var(--radius); box-shadow: var(--card-shadow); padding: 32px 36px; margin-bottom: 36px; }
.doc-box h3 { font-size: 21px; color: var(--green-dark); margin-bottom: 18px; display: flex; align-items: center; gap: 10px; }
.doc-list li { padding: 10px 0 10px 34px; position: relative; color: #4A554F; border-bottom: 1px dashed #E4EAE6; }
.doc-list li:last-child { border-bottom: none; }
.doc-list li::before { content: "✓"; position: absolute; left: 6px; color: var(--green); font-weight: 700; }
.timeline { position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 10px; top: 8px; bottom: 8px; width: 3px; background: var(--green-light); border-radius: 2px; }
.timeline li { position: relative; padding: 0 0 22px 0; color: #4A554F; }
.timeline li b { color: var(--ink); }
.timeline li::before {
  content: ""; position: absolute; left: -30px; top: 7px;
  width: 13px; height: 13px; border-radius: 50%;
  background: #fff; border: 3px solid var(--green);
}
.timeline li:last-child { padding-bottom: 0; }

/* ---------- 企业之窗 ---------- */
.ent-list { display: grid; gap: 26px; }
.ent-card {
  background: #fff; border-radius: var(--radius); box-shadow: var(--card-shadow);
  display: grid; grid-template-columns: 300px 1fr; overflow: hidden; transition: 0.3s;
}
.ent-card:hover { transform: translateY(-4px); box-shadow: 0 10px 26px rgba(30,91,62,0.18); }
.ent-card img { width: 100%; height: 100%; min-height: 190px; object-fit: cover; }
.ent-card .txt { padding: 26px 30px; }
.ent-card .txt h3 { font-size: 20px; color: var(--green-dark); margin-bottom: 10px; }
.ent-card .txt p { font-size: 15px; color: #4A554F; text-align: justify; display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.pager { display: flex; justify-content: center; gap: 10px; margin-top: 36px; }
.pager a { min-width: 38px; height: 38px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid #D7E0DA; border-radius: 6px; font-size: 14px; color: var(--gray); transition: 0.2s; }
.pager a.on, .pager a:hover { background: var(--green); border-color: var(--green); color: #fff; }

/* ---------- 园区服务宫格 ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.svc-card {
  background: #fff; border-radius: var(--radius); box-shadow: var(--card-shadow);
  padding: 30px 24px; text-align: center; transition: 0.3s; border-top: 4px solid transparent;
}
.svc-card:hover { border-top-color: var(--green); transform: translateY(-5px); }
.svc-card .icon { font-size: 38px; margin-bottom: 12px; }
.svc-card b { display: block; font-size: 18px; color: var(--ink); margin-bottom: 8px; }
.svc-card p { font-size: 13px; color: var(--gray); }

/* ---------- 众创中心 ---------- */
.incub-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.incub-grid .pic img { border-radius: var(--radius); box-shadow: var(--card-shadow); }
.incub-grid h3 { font-size: 24px; color: var(--green-dark); margin-bottom: 14px; }
.incub-grid p { color: #4A554F; margin-bottom: 18px; }
.check-list li { padding: 8px 0 8px 32px; position: relative; color: #4A554F; }
.check-list li::before { content: "✔"; position: absolute; left: 4px; color: var(--green); font-weight: 700; }

/* ---------- CTA 条 ---------- */
.cta-band { background: linear-gradient(120deg, var(--green-dark), var(--green)); color: #fff; text-align: center; padding: 52px 0; }
.cta-band h2 { font-size: 26px; letter-spacing: 2px; margin-bottom: 10px; }
.cta-band p { color: rgba(255,255,255,0.85); margin-bottom: 24px; }
.cta-band .btn { background: #fff; color: var(--green-dark); }
.cta-band .btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.25); }

/* ---------- 新闻列表占位 ---------- */
.news-item { display: flex; gap: 24px; background: #fff; border-radius: var(--radius); box-shadow: var(--card-shadow); padding: 22px 26px; margin-bottom: 20px; transition: 0.25s; }
.news-item:hover { transform: translateX(6px); }
.news-item .date { text-align: center; flex-shrink: 0; width: 72px; background: var(--green-light); border-radius: 6px; padding: 10px 0; align-self: flex-start; }
.news-item .date b { display: block; font-size: 24px; color: var(--green-dark); line-height: 1.2; }
.news-item .date span { font-size: 12px; color: var(--gray); }
.news-item h3 { font-size: 17px; margin-bottom: 6px; color: var(--ink); }
.news-item p { font-size: 14px; color: var(--gray); }

/* ---------- 页脚 ---------- */
.footer { background: var(--green-dark); color: rgba(255,255,255,0.85); padding: 52px 0 0; font-size: 14px; }
.footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px; padding-bottom: 40px; }
.footer h4 { color: #fff; font-size: 17px; margin-bottom: 16px; letter-spacing: 1px; }
.footer .brand img { background: #fff; border-radius: 6px; padding: 6px 10px; height: 46px; width: auto; margin-bottom: 14px; }
.footer li { margin-bottom: 8px; }
.footer a:hover { color: #fff; text-decoration: underline; }
.footer .qr { width: 110px; height: 110px; border-radius: 8px; background: #fff; padding: 5px; }
.footer .links a { display: inline-block; margin-right: 14px; }
.copyright { border-top: 1px solid rgba(255,255,255,0.15); text-align: center; padding: 18px 0; font-size: 13px; color: rgba(255,255,255,0.55); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .industry-grid { grid-template-columns: repeat(4, 1fr); }
  .build-grid, .svc-grid { grid-template-columns: repeat(2, 1fr); }
  .intro-grid, .incub-grid { grid-template-columns: 1fr; }
  .footer .cols { grid-template-columns: 1fr 1fr; }
  .page-body { flex-direction: column; }
  .side-nav { width: 100%; }
}
@media (max-width: 768px) {
  .topbar { font-size: 13px; }
  .topbar .container { justify-content: center; height: 32px; }
  .topbar .tip { display: none; }
  .topbar .hotline strong { font-size: 15px; }
  .nav {
    display: none; position: absolute; top: 76px; left: 0; right: 0;
    background: #fff; flex-direction: column; padding: 12px 0;
    box-shadow: 0 12px 24px rgba(0,0,0,0.12);
  }
  .nav.open { display: flex; }
  .nav-toggle { display: block; }
  .banner-slide img { height: 320px; }
  .banner-slide .overlay .container h1 { font-size: 28px; }
  .banner-slide .overlay .container p { font-size: 15px; }
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .base-row { grid-template-columns: 1fr; }
  .detail-card, .ent-card { grid-template-columns: 1fr; }
  .detail-card img { height: 200px; }
  .stat-row { flex-wrap: wrap; }
  .svc-grid, .build-grid { grid-template-columns: 1fr; }
  .footer .cols { grid-template-columns: 1fr; }
  .section { padding: 44px 0; }
}