/* ===========================
   青岛金海牛科技有限公司 - 官网样式
   主色：橙色 #E8611A，深灰 #333
=========================== */

:root {
  --primary: #E8611A;
  --primary-dark: #c4501a;
  --primary-light: #f97c3c;
  --dark: #2c2c2c;
  --gray: #666;
  --light-gray: #f5f5f5;
  --white: #fff;
  --border: #e0e0e0;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Microsoft YaHei', 'PingFang SC', Arial, sans-serif;
  color: var(--dark);
  line-height: 1.7;
  background: var(--white);
}

a { text-decoration: none; color: inherit; }

img { max-width: 100%; display: block; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 顶部导航 ===== */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  z-index: 1000;
  height: 70px;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo img {
  height: 44px;
  width: auto;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 0;
}

.nav-menu li a {
  display: block;
  padding: 0 22px;
  height: 70px;
  line-height: 70px;
  font-size: 15px;
  color: var(--dark);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-menu li a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%; right: 50%;
  height: 3px;
  background: var(--primary);
  transition: var(--transition);
  border-radius: 2px 2px 0 0;
}

.nav-menu li a:hover,
.nav-menu li a.active {
  color: var(--primary);
}

.nav-menu li a:hover::after,
.nav-menu li a.active::after {
  left: 15px; right: 15px;
}

.nav-contact-btn {
  background: var(--primary);
  color: var(--white) !important;
  padding: 8px 22px !important;
  border-radius: 4px;
  height: 36px !important;
  line-height: 20px !important;
  margin-top: 17px;
  transition: var(--transition) !important;
  display: inline-block !important;
}

.nav-contact-btn:hover {
  background: var(--primary-dark) !important;
  color: var(--white) !important;
}

.nav-contact-btn::after { display: none !important; }

/* ===== Hero Banner ===== */
.hero {
  padding-top: 70px;
  background: url('images/banner.jpg') center center / cover no-repeat;
  color: var(--white);
  min-height: 580px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}


/* 图片遮罩层 - 增加透明度 */
.hero::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(to right, rgba(26,26,46,0.6) 0%, rgba(26,26,46,0.4) 50%, rgba(26,26,46,0.7) 100%);
  z-index: 0;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at 60% 40%, rgba(232,97,26,0.1) 0%, transparent 60%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  width: 100%;
  text-align: center;
  padding: 100px 20px 60px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
  margin: 0 auto;
}

.hero h1 {
  font-size: 56px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 30px;
  letter-spacing: 3px;
  white-space: nowrap;
  color: #fff;
  text-shadow: 0 3px 12px rgba(0,0,0,0.5);
}

.hero h1 span { color: #fff; }

.hero p {
  font-size: 16px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
  line-height: 1.9;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.hero-btns { 
  display: flex; 
  gap: 20px; 
  justify-content: center;
  flex-wrap: nowrap;
  margin-top: 40px;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  padding: 12px 28px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  letter-spacing: 1px;
}

.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(232,97,26,0.4); }

.btn-outline {
  background: transparent;
  color: var(--white);
  padding: 10px 26px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  border: 2px solid rgba(255,255,255,0.6);
  transition: var(--transition);
  cursor: pointer;
  letter-spacing: 1px;
}

.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,0.1); transform: translateY(-2px); }

/* ===== 数据统计 ===== */
.stats-bar {
  background: var(--primary);
  padding: 28px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.stat-item {
  text-align: center;
  color: var(--white);
  padding: 10px 20px;
  border-right: 1px solid rgba(255,255,255,0.25);
}

.stat-item:last-child { border-right: none; }

.stat-num {
  font-size: 36px;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 6px;
}

.stat-num span { font-size: 18px; }

.stat-label {
  font-size: 13px;
  opacity: 0.9;
}

/* ===== Section 通用 ===== */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  color: var(--primary);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 14px;
}

.section-desc {
  font-size: 16px;
  color: var(--gray);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

.section-divider {
  width: 48px;
  height: 3px;
  background: var(--primary);
  margin: 16px auto 0;
  border-radius: 2px;
}

/* ===== 核心业务卡片 ===== */
.bg-light { background: var(--light-gray); }

.business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.biz-card {
  background: var(--white);
  border-radius: 8px;
  padding: 36px 28px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border-top: 3px solid transparent;
}

.biz-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
  border-top-color: var(--primary);
}

.biz-icon {
  width: 60px;
  height: 60px;
  background: rgba(232,97,26,0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 28px;
}

.biz-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--dark);
}

.biz-card p {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.8;
}

/* ===== 服务工具列表 ===== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* ===== 免费服务清单 ===== */
.free-services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ===== 重点招募行业 ===== */
.industry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.industry-card {
  background: white;
  border-radius: 8px;
  padding: 12px 16px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tool-item {
  display: flex;
  gap: 16px;
  background: var(--white);
  border-radius: 8px;
  padding: 24px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.tool-item:hover { transform: translateX(4px); border-left: 3px solid var(--primary); }

.tool-num {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: var(--primary);
  color: var(--white);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
}

.tool-content h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--dark);
}

.tool-content p {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.7;
}

/* ===== 服务流程 ===== */
.service-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.service-step {
  text-align: center;
  background: white;
  border-radius: 8px;
  padding: 32px 20px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.service-step:hover {
  transform: translateY(-4px);
}

.step-num {
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  margin: 0 auto 16px;
}

.service-step h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--dark);
}

.service-step p {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.7;
}

/* ===== 关于我们 ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-img-wrap {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
}

.about-text h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.4;
}

.about-text h2 span { color: var(--primary); }

.about-text p {
  font-size: 15px;
  color: var(--gray);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 24px 0;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
}

.highlight-item::before {
  content: '✓';
  width: 22px;
  height: 22px;
  min-width: 22px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

/* ===== 产业园招商 ===== */
.park-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
  margin-bottom: 56px;
}

.park-intro-text h3 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 14px;
}

.park-intro-text p {
  font-size: 15px;
  color: var(--gray);
  line-height: 1.8;
  margin-bottom: 12px;
}

.park-info-list { list-style: none; margin-top: 20px; }

.park-info-list li {
  display: flex;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.park-info-list li strong {
  min-width: 80px;
  color: var(--primary);
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.adv-card {
  background: var(--white);
  border-radius: 8px;
  padding: 28px 24px;
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
}

.adv-card:hover { transform: translateY(-4px); }

.adv-card .adv-icon {
  font-size: 36px;
  margin-bottom: 14px;
}

.adv-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--dark);
}

.adv-card p {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.7;
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: 72px 0;
  text-align: center;
}

.cta-section h2 {
  font-size: 34px;
  font-weight: 700;
  margin-bottom: 14px;
}

.cta-section p {
  font-size: 17px;
  opacity: 0.9;
  margin-bottom: 36px;
}

.btn-white {
  background: var(--white);
  color: var(--primary);
  padding: 14px 40px;
  border-radius: 4px;
  font-size: 16px;
  font-weight: 700;
  display: inline-block;
  transition: var(--transition);
}

.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }

/* ===== 联系我们 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
}

.contact-item {
  display: flex;
  gap: 14px;
  margin-bottom: 24px;
  align-items: flex-start;
}

.contact-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: rgba(232,97,26,0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.contact-detail h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray);
  margin-bottom: 4px;
}

.contact-detail p {
  font-size: 15px;
  color: var(--dark);
  font-weight: 500;
}

.contact-form { background: var(--light-gray); border-radius: 8px; padding: 32px; }

.contact-form h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 24px;
}

.form-group { margin-bottom: 18px; }

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 14px;
  font-family: inherit;
  transition: var(--transition);
  background: var(--white);
  color: var(--dark);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(232,97,26,0.1);
}

.form-group textarea { height: 110px; resize: vertical; }

/* ===== 产品展示 ===== */
.product-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 9px 24px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--white);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  color: var(--gray);
}

.tab-btn.active,
.tab-btn:hover {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.product-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(0,0,0,0.12); }

.product-img {
  height: 200px;
  background: linear-gradient(135deg, #f0f0f0, #e0e0e0);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: var(--gray);
}

.product-body { padding: 20px; }

.product-tag {
  display: inline-block;
  background: rgba(232,97,26,0.1);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 10px;
}

.product-body h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.product-body p {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.7;
}

/* ===== 海牛易货 核心产品展示 ===== */
.product-hero-grid {
  background: linear-gradient(135deg, #1a1a2e, #2d2d44);
  border-radius: 12px;
  padding: 48px;
  color: white;
  margin-bottom: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
}

.product-hero-left h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
  color: white;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.product-hero-left p {
  font-size: 15px;
  color: rgba(255,255,255,0.85);
  line-height: 1.8;
  margin-bottom: 20px;
}

.product-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.product-hero-tags span {
  display: inline-block;
  background: rgba(232,97,26,0.2);
  color: #f97c3c;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid rgba(232,97,26,0.3);
}

.product-hero-right {
  text-align: center;
}

.product-hero-icon {
  font-size: 80px;
  margin-bottom: 20px;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3));
}

.product-hero-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 20px;
}

.product-hero-stat .num {
  font-size: 32px;
  font-weight: 700;
  color: #f97c3c;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.product-hero-stat .label {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  margin-top: 4px;
}

/* ===== Footer ===== */
footer {
  background: #1a1a2e;
  color: rgba(255,255,255,0.8);
  padding: 60px 0 0;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 60px;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 0 0 40px 130px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  box-sizing: border-box;
}

.footer-brand {
  grid-column: 1 / -1;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.footer-brand img {
  height: 40px;
  width: auto;
  margin-bottom: 16px;
  margin-left: auto;
  margin-right: auto;
}

.footer-brand p {
  font-size: 13px;
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
  margin-bottom: 20px;
  text-align: center;
}

.footer-social { display: flex; gap: 10px; }

.social-link {
  width: 34px;
  height: 34px;
  background: rgba(255,255,255,0.08);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: var(--transition);
}

.social-link:hover { background: var(--primary); }

.footer-col {
  text-align: left;
  flex: 0 0 200px;
  padding: 0;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 18px;
}

.footer-col ul { list-style: none; }

.footer-col ul li {
  margin-bottom: 10px;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
}

.footer-col ul li a {
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}

.footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }

.footer-bottom {
  padding: 18px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}

.footer-bottom a {
  color: rgba(255,255,255,0.45);
  text-decoration: none;
  font-size: 13px;
  vertical-align: baseline;
  display: inline;
}

.footer-bottom a:hover {
  text-decoration: underline;
}

/* ===== 页面内容区（非首页） ===== */
.page-hero {
  padding-top: 70px;
  background: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%);
  color: var(--white);
  padding-bottom: 60px;
  text-align: center;
}

.page-hero h1 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
  margin-top: 48px;
}

.page-hero p {
  font-size: 16px;
  color: rgba(255,255,255,0.75);
}

.breadcrumb {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-top: 12px;
}

.breadcrumb a { color: rgba(255,255,255,0.6); }
.breadcrumb a:hover { color: var(--primary-light); }

/* ===== 响应式 ===== */

/* 汉堡按钮 - 默认隐藏 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* 汉堡按钮激活态（X图标） */
.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 1024px) {
  .business-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { gap: 40px; flex-wrap: wrap; }
}

@media (max-width: 768px) {
  .section { padding: 40px 0; }

  /* 显示汉堡按钮 */
  .nav-toggle {
    display: flex;
  }

  /* 移动端菜单样式 */
  .nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(8px);
    flex-direction: column;
    padding: 10px 0;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    z-index: 999;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu li a {
    padding: 0 24px;
    height: 48px;
    line-height: 48px;
    border-bottom: 1px solid var(--border);
  }

  .nav-menu li:last-child a {
    border-bottom: none;
  }

  .hero h1 { font-size: 28px; white-space: normal; text-align: center; }
  .hero { min-height: 500px; background-position: center 15%; }
  .hero > .container { display: flex; justify-content: center; align-items: center; padding: 0; }
  .hero-content { padding: 80px 20px 40px; text-align: center; margin: 0 auto; width: 100%; box-sizing: border-box; }
  .hero-btns { justify-content: center; display: flex; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item { border-right: 1px solid rgba(255,255,255,0.25); }
  .stat-item:nth-child(2n) { border-right: none; }
  .business-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 24px; }
  .industry-tags { display: grid !important; grid-template-columns: repeat(2, 1fr) !important; justify-content: initial !important; gap: 10px !important; }
  .about-img-wrap { min-height: 280px; }
  .about-img-wrap img { object-fit: cover; object-position: center 40%; }
  .about-text > a.btn-primary { display: block !important; width: fit-content; margin: 0 auto; text-align: center; }
  .contact-grid { grid-template-columns: 1fr; }
  .park-intro { grid-template-columns: 1fr; }

  /* Footer 单列 */  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .tools-grid { grid-template-columns: 1fr; }
  .free-services-grid { grid-template-columns: repeat(2, 1fr); }
  /* 移动端地图图片高度调整 */
  .contact-map-img { height: 300px !important; }
  /* Footer 三列布局，文字左对齐，整体居中 */
  .footer-grid {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr);
    justify-items: start;
    text-align: left;
    gap: 20px 44px;
    width: 90%;
    margin: 0 auto;
    padding: 0 0 0 7%;
    box-sizing: border-box;
    padding-bottom: 24px;
  }
  /* 移动端 Footer 上移 */
  footer { padding-top: 50px !important; }
  .footer-col {
    width: 100%;
    min-width: 0;
  }
  /* 三列分别左右微调 */
  .footer-grid > *:first-child { margin-left: -4%; }
  .footer-grid > *:last-child { margin-right: -4%; }
  /* 核心业务列禁止换行 */
  .footer-grid > *:nth-child(2) ul li { white-space: nowrap; }
  .footer-col h4 {
    text-align: left;
    font-size: 14px;
  }
  .footer-col ul {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-col ul li {
    width: 100%;
    text-align: left;
    margin-bottom: 8px;
    font-size: 13px;
    word-break: break-all;
  }
  .section-title { font-size: 26px; }
  .section-header { margin-bottom: 32px; }

  /* 海牛易货区块 手机端单列，保留图形效果 */
  .product-hero-grid {
    grid-template-columns: 1fr;
    padding: 28px 20px;
    gap: 24px;
  }
  .product-hero-left h3 { font-size: 22px; text-shadow: 0 2px 6px rgba(0,0,0,0.3); }
  .product-hero-left p { font-size: 14px; }
  .product-hero-tags span { font-size: 13px; padding: 5px 14px; }
  .product-hero-icon { font-size: 48px; }
  .product-hero-stat .num { font-size: 18px; }
  .product-hero-stat .label { font-size: 12px; }

  /* 服务流程 手机端两列 */
  .service-steps { grid-template-columns: repeat(2, 1fr); }

  /* 发展成果 手机端两列 */
  .achievements-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 14px !important; }

  /* 平台复制标签 手机端两列左对齐 */
  .platform-tags {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    justify-content: start !important;
    gap: 10px !important;
  }
  .platform-tags span {
    text-align: left !important;
    font-size: 13px !important;
    padding: 9px 12px !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  /* Footer 单列 */
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .section { padding: 30px 0; }
  .section-header { margin-bottom: 24px; }

  .hero h1 { font-size: 22px; white-space: normal; text-align: center; }
  .hero { min-height: 450px; background-position: center 20%; }
  .hero > .container { display: flex; justify-content: center; align-items: center; padding: 0; }
  .hero-content { padding: 70px 16px 30px; text-align: center; margin: 0 auto; width: 100%; box-sizing: border-box; }
  .hero p { font-size: 15px; }
  .hero-btns { justify-content: center; display: flex; }
  .page-hero h1 { font-size: 26px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item { border-right: 1px solid rgba(255,255,255,0.25); }
  .stat-item:nth-child(2n) { border-right: none; }
  .about-grid { gap: 20px; }
  .about-img-wrap { min-height: 280px; }
  .about-img-wrap img { object-fit: cover; object-position: center 40%; }
  .about-highlights { grid-template-columns: 1fr 1fr; gap: 10px; }
  /* 发展成果 小屏两列 */
  .achievements-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 12px !important; }
  /* 平台复制标签 小屏两列左对齐 */
  .platform-tags {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 8px !important;
  }
  .platform-tags span {
    text-align: left !important;
    font-size: 12px !important;
    padding: 8px 10px !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .about-text .btn-primary { display: block; text-align: center; width: fit-content; margin: 0 auto; }
  .about-text { text-align: left; }
  .about-text > a.btn-primary { display: block !important; width: fit-content; margin: 0 auto; text-align: center; }
  .advantage-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .tool-num { font-size: 32px; }
  .container { padding: 0 16px; }
  /* 手机小屏 footer 仍保持三列，品牌区居中 */
  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
    justify-items: center;
    text-align: center;
    gap: 16px 44px;
  }
  .footer-brand {
    grid-column: 1 / -1;
    text-align: center;
    max-width: 100%;
    margin: 0 auto;
  }
  .footer-brand img {
    margin: 0 auto;
  }
  .footer-brand p {
    font-size: 13px;
    text-align: center;
    margin: 0 auto 20px auto;
    line-height: 1.8;
  }
  .footer-social {
    justify-content: center;
  }
  .footer-col {
    width: 100%;
    min-width: 0;
  }
  .footer-col h4 {
    text-align: left;
  }
  .footer-col ul {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-col ul li {
    width: 100%;
    text-align: left;
    margin-bottom: 8px;
  }
  /* 海牛易货区块 小屏进一步压缩，保留图形效果 */
  .product-hero-grid { padding: 20px 16px; gap: 16px; }
  .product-hero-left h3 { font-size: 18px; text-shadow: 0 1px 4px rgba(0,0,0,0.3); }
  .product-hero-left p { font-size: 13px; }
  .product-hero-tags span { font-size: 12px; padding: 4px 10px; }
  .product-hero-icon { font-size: 48px; }
  .product-hero-stat .num { font-size: 16px; }
  .product-hero-stat .label { font-size: 11px; }
  /* 服务流程 小屏两列 */
  .service-steps { grid-template-columns: repeat(2, 1fr); }
}