:root {
  --primary: #0284c7;
  --primary-dark: #0369a1;
  --primary-light: #e0f2fe;
  --secondary: #0f172a;
  --accent: #f59e0b;
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --text-title: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  background-color: var(--bg-page);
  color: var(--text-body);
  line-height: 1.6;
  font-size: 15px;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--primary);
}

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

/* 顶部城市栏与服务电话 */
.top-bar {
  background: #0f172a;
  color: #94a3b8;
  font-size: 13px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.city-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
}

.city-badge {
  background: #0284c7;
  color: #ffffff;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.city-switch-btn {
  color: #38bdf8;
  cursor: pointer;
  text-decoration: underline;
}

.top-contact {
  display: flex;
  align-items: center;
  gap: 16px;
}

.top-hotline {
  color: #ffffff;
  font-weight: 700;
}

/* 头部导航 */
.header-nav {
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo-area img {
  height: 42px;
  display: block;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-item a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-title);
  padding: 8px 0;
  position: relative;
}

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

.nav-item.active a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
}

.header-btn {
  background: var(--primary);
  color: #ffffff;
  padding: 8px 18px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 14px;
  transition: background 0.2s;
}

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

/* 关键词标签云横幅 */
.keyword-strip {
  background: #f1f5f9;
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
  font-size: 13px;
  color: var(--text-muted);
}

.keyword-strip-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  overflow-x: auto;
  white-space: nowrap;
}

.keyword-tag {
  background: #ffffff;
  padding: 2px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  color: var(--text-body);
}

.keyword-tag:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* Hero 横幅 */
.hero-section {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0284c7 100%);
  color: #ffffff;
  padding: 70px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 800px;
}

.hero-tag {
  display: inline-block;
  background: rgba(56, 189, 248, 0.2);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.4);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.hero-title {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.hero-desc {
  font-size: 16px;
  color: #cbd5e1;
  margin-bottom: 28px;
  max-width: 680px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
}

.btn-cta {
  background: #0284c7;
  color: #ffffff;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.4);
}

.btn-cta:hover {
  background: #0369a1;
  color: #ffffff;
}

.btn-secondary-hero {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 500;
}

.btn-secondary-hero:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

/* 核心优势条 */
.features-bar {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  padding: 24px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
}

.feature-text h4 {
  font-size: 15px;
  color: var(--text-title);
  margin-bottom: 2px;
}

.feature-text p {
  font-size: 12px;
  color: var(--text-muted);
}

/* 通用板块 */
.section {
  padding: 60px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-tag {
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-title);
}

.section-desc {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 6px;
}

/* 产品卡片网格 */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.product-card-img {
  height: 200px;
  background: #f1f5f9;
  overflow: hidden;
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 8px;
}

.product-card-summary {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
  flex: 1;
}

.product-card-specs {
  background: #f8fafc;
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 12px;
  color: var(--text-body);
  margin-bottom: 14px;
}

.product-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}

.btn-detail {
  color: var(--primary);
  font-weight: 600;
  font-size: 13px;
}

/* 案例卡片网格 */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 24px;
}

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s;
}

.case-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.case-card-img {
  height: 200px;
  background: #f1f5f9;
}

.case-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-card-body {
  padding: 20px;
}

.case-card-client {
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 4px;
}

.case-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 8px;
}

.case-card-summary {
  font-size: 13px;
  color: var(--text-muted);
}

/* FAQ 问答列表 */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  padding: 16px 20px;
  font-weight: 600;
  color: var(--text-title);
  background: #ffffff;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  padding: 0 20px 16px;
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.6;
}

/* 城市分站全国导航矩阵（SEO 关键内链） */
.city-matrix-section {
  background: #f1f5f9;
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.city-matrix-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 16px;
}

.city-links-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.city-link-item {
  background: #ffffff;
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 13px;
  color: var(--text-body);
}

.city-link-item:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

/* 留资在线表单区域（全新优化，布局通透大气） */
.lead-form-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  max-width: 760px;
  margin: 0 auto;
}

.lead-form-card .form-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  width: 100%;
}

.lead-form-card .form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: #0f172a;
  margin-bottom: 8px;
}

.lead-form-card .form-label span {
  color: #ef4444;
}

.lead-form-card .form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font-size: 14px;
  color: #0f172a;
  background: #f8fafc;
  outline: none;
  transition: all 0.2s ease;
  box-sizing: border-box;
  display: block;
}

.lead-form-card .form-control:focus {
  background: #ffffff;
  border-color: #0284c7;
  box-shadow: 0 0 0 4px rgba(2, 132, 199, 0.12);
}

.lead-form-card textarea.form-control {
  min-height: 100px;
  resize: vertical;
  line-height: 1.6;
}

.lead-form-card .btn-cta {
  width: 100%;
  padding: 14px;
  font-size: 16px;
  font-weight: 700;
  border-radius: 8px;
  background: #0284c7;
  color: #ffffff;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
  transition: all 0.2s ease;
  display: block;
  margin-top: 10px;
}

.lead-form-card .btn-cta:hover {
  background: #0369a1;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(2, 132, 199, 0.45);
}

/* ==========================================
   全局输入框与表单通用美化重置
   ========================================== */
input[type="text"],
input[type="tel"],
input[type="email"],
input[type="password"],
textarea,
select {
  border: 1px solid #cbd5e1;
  outline: none;
  font-family: inherit;
  font-size: 14px;
  box-sizing: border-box;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

/* ==========================================
   母模板 C · 极简高定展厅版专属 VIP 预约表单样式
   ========================================== */
.vip-consult-section {
  padding: 80px 0;
  background: #f8fafc;
}

.vip-box {
  background: #ffffff;
  border-radius: 20px;
  padding: 50px 48px;
  max-width: 740px;
  margin: 0 auto;
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.06), 0 0 1px 1px rgba(0, 0, 0, 0.04);
  border: 1px solid #e2e8f0;
}

.vip-lead-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
}

.vip-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  width: 100%;
}

.vip-form-row.full-width {
  grid-template-columns: 1fr;
}

.vip-input-group {
  width: 100%;
}

.vip-form-input,
.vip-form-textarea {
  width: 100% !important;
  display: block;
  box-sizing: border-box !important;
  background: #f8fafc !important;
  border: 1.5px solid #e2e8f0 !important;
  border-radius: 10px !important;
  padding: 14px 18px !important;
  font-size: 14.5px !important;
  color: #0f172a !important;
  outline: none !important;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.02);
}

.vip-form-input:focus,
.vip-form-textarea:focus {
  background: #ffffff !important;
  border-color: #0284c7 !important;
  box-shadow: 0 0 0 4px rgba(2, 132, 199, 0.12), 0 2px 8px rgba(0, 0, 0, 0.04) !important;
}

.vip-form-input::placeholder,
.vip-form-textarea::placeholder {
  color: #94a3b8;
}

.vip-form-textarea {
  min-height: 110px !important;
  resize: vertical;
  line-height: 1.6;
}

.vip-submit-btn {
  width: 100%;
  padding: 16px 24px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, #0284c7, #0369a1);
  border: none;
  cursor: pointer;
  box-shadow: 0 10px 20px -5px rgba(2, 132, 199, 0.4);
  transition: all 0.25s ease;
  margin-top: 6px;
}

.vip-submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 26px -4px rgba(2, 132, 199, 0.5);
}

@media (max-width: 640px) {
  .vip-box {
    padding: 30px 20px;
  }
  .vip-form-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

/* ==========================================
   母模板 D · 工业数字驾驶舱版专属工单派发终端样式
   ========================================== */
.dispatch-section {
  padding: 80px 0;
  background: #030712;
}

.dispatch-terminal {
  background: #0b0f19;
  border: 1px solid #1e293b;
  border-radius: 16px;
  padding: 44px 40px;
  max-width: 740px;
  margin: 0 auto;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 30px rgba(56, 189, 248, 0.06);
  position: relative;
  overflow: hidden;
}

.dispatch-terminal::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #0284c7, #38bdf8, #818cf8);
}

.cockpit-lead-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
}

.cockpit-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  width: 100%;
}

.cockpit-form-row.full-width {
  grid-template-columns: 1fr;
}

.cockpit-input-group {
  width: 100%;
}

.cockpit-form-input,
.cockpit-form-textarea {
  width: 100% !important;
  display: block;
  box-sizing: border-box !important;
  background: #030712 !important;
  border: 1.5px solid #1e293b !important;
  border-radius: 8px !important;
  padding: 14px 18px !important;
  font-size: 14px !important;
  color: #f8fafc !important;
  outline: none !important;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif !important;
  transition: all 0.25s ease !important;
}

.cockpit-form-input:focus,
.cockpit-form-textarea:focus {
  background: #070e1e !important;
  border-color: #38bdf8 !important;
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.25), 0 0 15px rgba(56, 189, 248, 0.15) !important;
}

.cockpit-form-input::placeholder,
.cockpit-form-textarea::placeholder {
  color: #64748b;
}

.cockpit-form-textarea {
  min-height: 100px !important;
  resize: vertical;
  line-height: 1.6;
}

.cockpit-submit-btn {
  width: 100%;
  padding: 16px 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  color: #ffffff;
  background: linear-gradient(135deg, #0284c7, #2563eb);
  border: 1px solid rgba(56, 189, 248, 0.3);
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(2, 132, 199, 0.4);
  transition: all 0.25s ease;
  margin-top: 6px;
}

.cockpit-submit-btn:hover {
  background: linear-gradient(135deg, #0369a1, #1d4ed8);
  box-shadow: 0 10px 28px rgba(2, 132, 199, 0.6);
  transform: translateY(-2px);
}

@media (max-width: 640px) {
  .dispatch-terminal {
    padding: 28px 18px;
  }
  .cockpit-form-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

/* 底部页脚 */
.footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 50px 0 20px;
  font-size: 13px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 30px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 15px;
  margin-bottom: 16px;
}

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

.footer-col li {
  margin-bottom: 8px;
}

.footer-col a:hover {
  color: #38bdf8;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  text-align: center;
  font-size: 12px;
}

/* 城市切换弹窗 Modal */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background: #ffffff;
  width: 90%;
  max-width: 760px;
  border-radius: 12px;
  padding: 24px;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
  padding-bottom: 14px;
  margin-bottom: 18px;
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-title);
}

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-muted);
}

.province-group {
  margin-bottom: 16px;
}

.province-name {
  font-weight: 700;
  font-size: 14px;
  color: var(--primary);
  margin-bottom: 8px;
}

.province-cities {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.city-btn {
  background: #f8fafc;
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 13px;
  color: var(--text-body);
}

.city-btn:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

/* 移动端响应式适配 */
@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr 1fr;
  }
  .products-grid,
  .cases-grid {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 26px;
  }
  .top-bar-inner {
    flex-direction: column;
    gap: 6px;
    align-items: flex-start;
  }
}