/* ============================================================
   上合在线 shol.cn — 上合新区门户
   全站样式表（零外部依赖，可直接部署至任意静态服务器）
   ============================================================ */

:root {
  --primary: #0064E0;
  --primary-dark: #0457CB;
  --sky: #0091FF;
  --teal: #00B8C4;
  --ink: #0A1317;
  --body-c: #1C1E21;
  --muted: #5D6C7B;
  --line: #CFD2D4;
  --soft: #F1F4F7;
  --radius: 24px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", "Hiragino Sans GB", sans-serif;
  color: var(--body-c);
  background: #fff;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 48px;
}

/* ---------------- 头部 ---------------- */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 16px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.logo-mark { width: 112px; height: 112px; object-fit: contain; display: block; }

.logo-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start; /* 三行文字左对齐，便于网址与中文左右对齐 */
  gap: 2px;
}

.logo-tag {
  font-size: 17px;
  font-weight: 500;
  color: #8A97A3; /* 灰色副标题 */
  letter-spacing: 1px;
  line-height: 1.2;
  white-space: nowrap;
}

.logo-cn {
  font-size: 44px;
  font-weight: 800;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  color: var(--ink);
  letter-spacing: 1px;
  line-height: 1.12;
  white-space: nowrap;
}

.logo-en {
  font-size: 28px;
  font-weight: 800; /* 网址加粗 */
  color: var(--primary);
  letter-spacing: 1px;
  line-height: 1.25;
  align-self: flex-start; /* 与中文左对齐 */
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.main-nav a {
  font-size: 16px;
  font-weight: 700; /* 栏目加粗 */
  color: var(--body-c);
  padding: 6px 10px;
  border-radius: 8px;
  transition: color .2s, background .2s;
  white-space: nowrap;
}

.main-nav a:hover {
  color: #fff;
  background: var(--primary); /* 鼠标悬停蓝底特效 */
}

.main-nav a.active {
  color: #fff;
  font-weight: 700;
  background: var(--primary);
}

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 100px;
  font-weight: 700;
  font-size: 14px;
  transition: background .2s, color .2s, transform .2s;
  white-space: nowrap;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }

.btn-outline {
  border: 2px solid var(--ink);
  color: var(--ink);
  padding: 10px 24px;
  background: #fff;
}
.btn-outline:hover { background: var(--ink); color: #fff; }

/* ---------------- 首页 Hero ---------------- */
.hero {
  max-width: 1440px;
  margin: 0 auto;
  padding: 80px 48px;
  display: flex;
  align-items: center;
  gap: 48px;
}

.hero-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
}

.badge {
  background: #EBF2FF;
  color: var(--primary);
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .5px;
}

.hero h1 {
  font-size: 56px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: 2px;
  line-height: 1.15;
}

.hero .subtitle {
  font-size: 28px;
  font-weight: 500;
  color: var(--primary);
  letter-spacing: 1px;
}

.hero .lead {
  font-size: 18px;
  color: var(--muted);
  line-height: 1.9;
}

.cta-row { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-img {
  width: 640px;
  max-width: 46%;
  height: auto;
  aspect-ratio: 1000 / 578;
  border-radius: 32px;
  box-shadow: 0 24px 60px rgba(0, 100, 224, .18);
}

/* ---------------- 通用区块 ---------------- */
.band { padding: 72px 0; }
.band.soft { background: var(--soft); }

.section-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: 1px;
  margin-bottom: 28px;
}

.prose p {
  font-size: 18px;
  line-height: 2;
  margin-bottom: 20px;
  text-align: justify;
}
.prose p:last-child { margin-bottom: 0; }

/* ---------------- 数据条 ---------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.stat {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px 28px;
  box-shadow: 0 4px 16px rgba(10, 19, 23, .05);
}

.stat .num {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
}

.stat .desc { font-size: 14px; color: var(--muted); }

/* ---------------- 四大示范区卡片 ---------------- */
.zones {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.zone-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}

.zone-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 100, 224, .12);
  border-color: var(--primary);
}

.zone-num {
  display: inline-block;
  color: #fff;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
  width: fit-content;
}

.num-1 { background: var(--primary); }
.num-2 { background: var(--sky); }
.num-3 { background: var(--primary-dark); }
.num-4 { background: var(--teal); }

.zone-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.4;
}

.zone-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  flex: 1;
}

.zone-link {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
}

/* ---------------- 栏目页 Banner ---------------- */
.page-banner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 64px 48px;
  display: flex;
  align-items: center;
  gap: 48px;
}

.page-banner .text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-banner .label {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 2px;
}

.page-banner h1 {
  font-size: 40px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: 1px;
  line-height: 1.25;
}

.page-banner .tagline {
  font-size: 18px;
  font-weight: 500;
  color: var(--muted);
}

.page-banner img {
  width: 560px;
  max-width: 44%;
  border-radius: 32px;
  box-shadow: 0 24px 60px rgba(0, 100, 224, .15);
}

/* ---------------- 发展亮点 ---------------- */
.highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.highlight {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
}

.highlight h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}

.highlight p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
}

/* ---------------- 联系我们 ---------------- */
.contact-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.contact-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
}

.contact-card .label {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.contact-card .name {
  font-size: 30px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.contact-card .desc {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.8;
}

/* ---------------- 页脚 ---------------- */
.site-footer {
  background: var(--ink);
  color: #DEE3E9;
  padding: 44px 48px;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
}

.footer-logo { width: 40px; height: 40px; opacity: .9; }

.site-footer p { font-size: 14px; }

.site-footer a { color: #7FA8FF; font-weight: 700; }
.site-footer a:hover { text-decoration: underline; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1180px) {
  .logo-mark { width: 80px; height: 80px; }
  .logo-cn { font-size: 32px; letter-spacing: 1px; }
  .logo-en { font-size: 20px; }
  .logo-tag { font-size: 13px; }
  .main-nav a { font-size: 15px; padding: 5px 9px; }

  .hero { flex-direction: column; padding: 56px 24px; }
  .hero-img { max-width: 100%; width: 100%; }
  .hero h1 { font-size: 40px; }
  .hero .subtitle { font-size: 22px; }

  .page-banner { flex-direction: column; padding: 48px 24px; }
  .page-banner img { max-width: 100%; width: 100%; }
  .page-banner h1 { font-size: 32px; }

  .zones { grid-template-columns: repeat(2, 1fr); }
  .highlights { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .header-inner {
    flex-direction: column;
    padding: 12px 20px;
    gap: 14px;
  }
  .main-nav { flex-wrap: wrap; justify-content: center; gap: 12px 18px; }

  .container { padding: 0 20px; }
  .band { padding: 56px 0; }
  .section-title { font-size: 28px; }
  .prose p { font-size: 16px; }

  .hero h1 { font-size: 34px; }
  .zones { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
}