/* ===== 导航栏 - 匹配原 React Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(4px);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  height: var(--header-height);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: url('https://material-image.wanwang.xin/1234856817067428/public/8452f3ab-47fe-4519-9d45-a8c81374fcac.png') center/cover no-repeat;
}

.logo-text {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary-darker);
}

.nav-menu {
  display: flex;
  gap: 24px;
  align-items: center;
  margin-left: auto;
}

.nav-menu a {
  font-size: 16px;
  font-weight: 500;
  color: #374151;
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-fast);
  text-decoration: none;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-cta {
  padding: 10px 24px !important;
  border-radius: 6px !important;
  font-weight: 500 !important;
  font-size: 15px !important;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-small);
}

.lang-switch button {
  padding: 4px 8px;
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--color-text-light);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  background: none;
  border: none;
  cursor: pointer;
}

.lang-switch button:hover { color: var(--color-primary); }

.lang-switch button.active {
  color: var(--color-primary);
  font-weight: 700;
}

.lang-switch span { color: var(--color-text-lighter); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  background: none;
  border: none;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== 页脚 - 匹配原 React Footer ===== */
.site-footer {
  background: var(--color-primary-darker);
  color: #fff;
  padding: 48px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 48px;
}

.footer-logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-logo-icon {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 20px;
  color: #fff;
}

.footer-logo-text {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
}

.footer-desc {
  color: #d1d5db;
  font-size: 14px;
  line-height: 1.625;
}

.footer-col h4 {
  color: #fff;
  margin-bottom: 16px;
  font-size: 18px;
  font-weight: 600;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
  list-style: none;
  padding: 0;
}

.footer-col a, .footer-col li {
  color: #d1d5db;
  font-size: 14px;
  transition: color var(--transition-fast);
}

.footer-col a {
  text-decoration: none;
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.footer-contact-icon {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 4px;
}

.footer-hours li {
  color: #d1d5db;
  font-size: 14px;
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 32px 0;
  text-align: center;
  color: #9ca3af;
  font-size: 14px;
}

.footer-icp {
  margin-top: 8px;
}

/* ===== 内页 Banner - 匹配原 React 渐变标题栏 ===== */
.page-banner {
  background: linear-gradient(to right, var(--color-primary-darker), var(--color-primary));
  color: #fff;
  padding: 64px 0;
  text-align: center;
}

.page-banner h1 {
  color: #fff;
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 16px;
}

.page-banner p {
  color: #e5e7eb;
  font-size: 20px;
  max-width: 640px;
  margin: 0 auto;
}

/* ===== 通用卡片 / 产品卡片 ===== */
.product-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  transform: translateY(-4px);
}

.product-card-image {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--color-bg-alt);
}

.product-card-image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.product-card:hover .product-card-image img { transform: scale(1.1); }

.product-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.product-card-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary-darker);
}

.product-card-model {
  font-size: var(--fs-small);
  color: var(--color-text-light);
}

.product-card-desc {
  font-size: var(--fs-small);
  color: var(--color-text-light);
  flex: 1;
}

.product-card-btn {
  margin-top: 8px;
  display: inline-block;
  padding: 8px 16px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: var(--fs-small);
  font-weight: 600;
  text-align: center;
  transition: background var(--transition-fast);
}

.product-card-btn:hover { background: var(--color-primary-dark); }

/* ===== 优势卡片 ===== */
.advantage-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--color-bg);
  border-radius: 12px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  transition: all var(--transition);
}

.advantage-card:hover {
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
  transform: translateY(-4px);
}

.advantage-icon {
  width: 56px; height: 56px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
}

.advantage-icon svg { width: 28px; height: 28px; }

.advantage-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary-darker);
  margin-bottom: 8px;
}

.advantage-card p {
  font-size: var(--fs-small);
  color: var(--color-text-light);
}

/* ===== 通用 grid ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
}

.section-header .section-title { text-align: left; margin-bottom: 0; }

.view-all {
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-primary);
  white-space: nowrap;
}

.view-all:hover { color: var(--color-primary-dark); }

/* ===== CTA 行动号召区（全站共用） ===== */
.cta-section {
  background: linear-gradient(to right, var(--color-primary-darker), var(--color-primary));
  color: #fff;
  text-align: center;
  padding: 64px 0;
}

.cta-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  max-width: 768px;
  margin: 0 auto;
}

.cta-content h2 {
  color: #fff;
  margin-bottom: 16px;
  font-size: 30px;
  font-weight: 700;
}

.cta-content p {
  color: #e5e7eb;
  font-size: 20px;
  margin-bottom: 32px;
}

.cta-content .btn { padding: 16px 32px; }