/* ============================================
   承钿恒官网 · 全站样式表
   设计规范：深蓝 + 金色，稳重商务
   ============================================ */

/* ===== 1. 设计变量（Design Tokens） ===== */
:root {
  /* 主色 */
  --c-navy: #0A2540;        /* 深海蓝 */
  --c-blue: #1B4F8C;        /* 商务蓝 */
  --c-blue-light: #2E7BC6;  /* 亮蓝 */
  --c-gold: #C8932E;        /* 典雅金 */
  --c-gold-light: #E6B450;  /* 浅金 */

  /* 中性色 */
  --c-bg: #f4f6f9;          /* 页面背景 */
  --c-bg-alt: #eef2f7;      /* 交替背景 */
  --c-white: #ffffff;
  --c-text: #1a2b3c;        /* 正文 */
  --c-text-light: #6b7c93;  /* 次要文字 */
  --c-border: #e8edf3;      /* 边框 */

  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(10, 37, 64, 0.06);
  --shadow-md: 0 4px 20px rgba(10, 37, 64, 0.10);
  --shadow-lg: 0 8px 30px rgba(10, 37, 64, 0.15);

  /* 圆角 */
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;

  /* 布局 */
  --container: 1200px;
  --nav-height: 72px;

  /* 过渡 */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 2. 基础重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Microsoft YaHei', 'PingFang SC', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.7;
  overflow-x: hidden;
}

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

/* ===== 3. 通用工具类 ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 80px 0; }
.section-alt { background: var(--c-white); }

.section-title {
  text-align: center;
  margin-bottom: 12px;
  font-size: 32px;
  font-weight: 700;
  color: var(--c-navy);
}
.section-title::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background: linear-gradient(90deg, var(--c-gold), var(--c-gold-light));
  margin: 14px auto 0;
  border-radius: 2px;
}
.section-subtitle {
  text-align: center;
  color: var(--c-text-light);
  font-size: 16px;
  margin-bottom: 50px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-gold {
  background: linear-gradient(135deg, var(--c-gold-light), var(--c-gold));
  color: var(--c-white);
  box-shadow: 0 4px 14px rgba(200, 147, 46, 0.35);
}
.btn-gold:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 6px 20px rgba(200, 147, 46, 0.45);
}
.btn-outline {
  background: transparent;
  color: var(--c-white);
  border-color: rgba(255, 255, 255, 0.6);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--c-white);
}
.btn-blue {
  background: var(--c-blue);
  color: var(--c-white);
}
.btn-blue:hover {
  background: var(--c-navy);
  transform: translateY(-2px);
}

/* ===== 4. 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(10, 37, 64, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: all var(--transition);
}
.navbar.scrolled {
  height: 64px;
  background: rgba(10, 37, 64, 0.98);
  box-shadow: var(--shadow-md);
}
.navbar .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo img { height: 48px; transition: height var(--transition); }
.navbar.scrolled .nav-logo img { height: 42px; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-menu a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  padding: 6px 0;
}
.nav-menu a:hover,
.nav-menu a.active { color: var(--c-white); }
.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%;
  width: 0; height: 2px;
  background: var(--c-gold);
  transition: all var(--transition);
  transform: translateX(-50%);
}
.nav-menu a:hover::after,
.nav-menu a.active::after { width: 100%; }

.nav-actions { display: flex; align-items: center; gap: 16px; }
.lang-toggle {
  background: rgba(255, 255, 255, 0.12);
  color: var(--c-white);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition);
}
.lang-toggle:hover { background: rgba(255, 255, 255, 0.2); }

/* 语言下拉选择器 */
.lang-select {
  background: rgba(255, 255, 255, 0.12);
  color: var(--c-white);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 6px 10px;
  border-radius: 20px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23ffffff' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 26px;
}
.lang-select:hover { background-color: rgba(255, 255, 255, 0.2); }
.lang-select:focus { outline: none; border-color: var(--c-gold-light); }
.lang-select option {
  background: var(--c-navy);
  color: var(--c-white);
}

/* 汉堡菜单（移动端） */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--c-white);
  transition: all var(--transition);
}

/* ===== 5. Hero 英雄区 ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-blue) 60%, var(--c-blue-light) 100%);
  overflow: hidden;
  padding-top: var(--nav-height);
}
/* Hero 装饰背景：抽象的矿山机械纹理 */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 80% 20%, rgba(200, 147, 46, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 20% 80%, rgba(46, 123, 198, 0.15) 0%, transparent 50%);
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 200px;
  background: linear-gradient(to top, var(--c-bg) 0%, transparent 100%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  color: var(--c-white);
}
.hero-badge {
  display: inline-block;
  background: rgba(200, 147, 46, 0.2);
  border: 1px solid rgba(200, 147, 46, 0.4);
  color: var(--c-gold-light);
  padding: 6px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.hero h1 .accent { color: var(--c-gold-light); }
.hero-subtitle {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Hero 信任条 */
.hero-trust {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 50px;
  margin-top: 60px;
  flex-wrap: wrap;
}
.trust-item { color: var(--c-white); }
.trust-num {
  font-size: 36px;
  font-weight: 700;
  color: var(--c-gold-light);
  line-height: 1;
}
.trust-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  margin-top: 6px;
}

/* ===== 6. 产品分类区 ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.category-card {
  background: var(--c-white);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--c-border);
  cursor: pointer;
}
.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--c-gold);
}
.category-icon {
  width: 64px; height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(27, 79, 140, 0.08), rgba(46, 123, 198, 0.12));
  border-radius: 50%;
}
.category-card:hover .category-icon {
  background: linear-gradient(135deg, var(--c-gold-light), var(--c-gold));
}
.category-icon svg { width: 32px; height: 32px; transition: all var(--transition); }
.category-card h3 {
  font-size: 18px;
  color: var(--c-navy);
  margin-bottom: 10px;
}
.category-card p {
  font-size: 14px;
  color: var(--c-text-light);
}

/* ===== 7. 精选产品区 ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  background: var(--c-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--c-border);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.product-image {
  height: 180px;
  background: linear-gradient(135deg, #eef2f7, #dde4ed);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
/* 首页产品卡片中的图片 - 缩小显示减少模糊 */
.product-image img {
  max-height: 100%;
  max-width: 70%;
  object-fit: contain;
  margin: 0 auto;
  padding: 8px;
}
.product-image svg {
  width: 80px; height: 80px;
  color: var(--c-blue);
  opacity: 0.5;
  transition: all var(--transition);
}
.product-card:hover .product-image svg {
  transform: scale(1.1);
  color: var(--c-gold);
  opacity: 0.7;
}
.product-image .tag {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--c-gold);
  color: var(--c-white);
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 12px;
  font-weight: 600;
}
.product-info { padding: 22px; }
.product-info h3 {
  font-size: 17px;
  color: var(--c-navy);
  margin-bottom: 8px;
}
.product-specs {
  display: flex;
  gap: 16px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.product-specs span {
  font-size: 13px;
  color: var(--c-text-light);
}
.product-specs strong { color: var(--c-blue); }
.product-link {
  font-size: 14px;
  color: var(--c-gold);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.product-link:hover { color: var(--c-navy); }

/* ===== 8. 为什么选择我们 ===== */
.advantages {
  background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-blue) 100%);
}
.advantages .section-title { color: var(--c-white); }
.advantages .section-subtitle { color: rgba(255, 255, 255, 0.75); }
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.advantage-card {
  text-align: center;
  padding: 36px 20px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition);
}
.advantage-card:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-6px);
  border-color: rgba(200, 147, 46, 0.4);
}
.advantage-num {
  font-size: 40px;
  font-weight: 700;
  color: var(--c-gold-light);
  opacity: 0.5;
  line-height: 1;
  margin-bottom: 16px;
}
.advantage-card h3 {
  font-size: 18px;
  color: var(--c-white);
  margin-bottom: 12px;
}
.advantage-card p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
}

/* ===== 9. 服务流程 ===== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}
.process-grid::before {
  content: '';
  position: absolute;
  top: 40px; left: 12%; right: 12%;
  height: 2px;
  background: linear-gradient(90deg, var(--c-blue-light), var(--c-gold));
  z-index: 0;
}
.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}
.process-icon {
  width: 80px; height: 80px;
  margin: 0 auto 18px;
  background: var(--c-white);
  border: 3px solid var(--c-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  color: var(--c-navy);
  box-shadow: var(--shadow-sm);
}
.process-step h3 {
  font-size: 17px;
  color: var(--c-navy);
  margin-bottom: 8px;
}
.process-step p {
  font-size: 13px;
  color: var(--c-text-light);
  padding: 0 8px;
}

/* ===== 10. CTA 询盘区 ===== */
.cta-section {
  background: linear-gradient(135deg, var(--c-gold) 0%, var(--c-gold-light) 100%);
  text-align: center;
  padding: 70px 0;
}
.cta-section h2 {
  font-size: 30px;
  color: var(--c-white);
  margin-bottom: 14px;
}
.cta-section p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 30px;
}
.cta-section .btn {
  background: var(--c-navy);
  color: var(--c-white);
  border: 2px solid var(--c-navy);
}
.cta-section .btn:hover {
  background: var(--c-white);
  color: var(--c-navy);
  border-color: var(--c-white);
}

/* ===== 11. 页脚 ===== */
.footer {
  background: var(--c-navy);
  color: rgba(255, 255, 255, 0.75);
  padding: 60px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand img { height: 56px; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.8; }
.footer-col h4 {
  color: var(--c-white);
  font-size: 16px;
  margin-bottom: 18px;
  font-weight: 600;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
}
.footer-col ul li a:hover { color: var(--c-gold-light); }
.footer-contact li {
  font-size: 14px;
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* ===== 12. 浮动按钮 ===== */
.float-actions {
  position: fixed;
  right: 24px; bottom: 24px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.float-btn {
  width: 48px; height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  opacity: 0;
  visibility: hidden;
  transform: scale(0.5);
}
.float-btn.show {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}
.float-inquiry {
  background: var(--c-gold);
  color: var(--c-white);
}
.float-inquiry:hover { background: var(--c-navy); transform: scale(1.1); }
.float-top {
  background: var(--c-white);
  color: var(--c-navy);
  border: 1px solid var(--c-border);
}
.float-top:hover { background: var(--c-blue); color: var(--c-white); }
.float-btn svg { width: 22px; height: 22px; }

/* ===== 13. 滚动渐入动画 ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ===== 14. 建设中页面样式 ===== */
.page-placeholder {
  min-height: 100vh;
  padding-top: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--c-navy), var(--c-blue));
  text-align: center;
  color: var(--c-white);
}
.page-placeholder-content { max-width: 500px; padding: 40px; }
.page-placeholder-icon {
  font-size: 56px;
  margin-bottom: 20px;
}
.page-placeholder h1 {
  font-size: 28px;
  margin-bottom: 12px;
}
.page-placeholder p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 28px;
}

/* ===== 15. 响应式 ===== */
@media (max-width: 1024px) {
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .category-card { text-decoration: none; color: inherit; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid::before { display: none; }
  .hero h1 { font-size: 40px; }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section-title { font-size: 26px; }
  .container { padding: 0 18px; }

  /* 导航：汉堡菜单 */
  .nav-menu {
    position: fixed;
    top: var(--nav-height); right: -100%;
    width: 75%; max-width: 300px;
    height: calc(100vh - var(--nav-height));
    background: rgba(10, 37, 64, 0.98);
    flex-direction: column;
    padding: 40px 30px;
    gap: 24px;
    transition: right 0.3s ease;
    align-items: flex-start;
  }
  .nav-menu.open { right: 0; }
  .nav-toggle { display: flex; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  /* Hero */
  .hero { min-height: auto; padding: 120px 0 80px; }
  .hero h1 { font-size: 30px; }
  .hero-subtitle { font-size: 15px; }
  .hero-trust { gap: 28px; margin-top: 40px; }
  .trust-num { font-size: 28px; }

  /* 网格单列 */
  .category-grid,
  .product-grid,
  .advantage-grid,
  .process-grid { grid-template-columns: 1fr; }

  /* 页脚 */
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }

  .cta-section h2 { font-size: 22px; }
}

/* ============================================
   17. 品类分隔标题和占位区块
   ============================================ */
.cat-divider {
  font-size: 24px;
  font-weight: 700;
  color: var(--c-navy);
  margin: 50px 0 24px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--c-gold);
  display: inline-block;
}
.cat-divider:first-of-type {
  margin-top: 20px;
}
.cat-placeholder {
  background: var(--c-white);
  border: 2px dashed var(--c-border);
  border-radius: var(--radius);
  padding: 48px 32px;
  text-align: center;
  margin-bottom: 32px;
  transition: all var(--transition);
}
.cat-placeholder:hover {
  border-color: var(--c-gold);
  background: rgba(200, 147, 46, 0.03);
}
.cat-placeholder-content h4 {
  font-size: 18px;
  color: var(--c-navy);
  margin-bottom: 12px;
}
.cat-placeholder-content p {
  font-size: 14px;
  color: var(--c-text-light);
  margin-bottom: 24px;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   18. 联系我们页样式
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 36px;
  align-items: start;
}

/* 表单卡片 */
.contact-form-card {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--c-border);
}
.contact-form-card h2 {
  font-size: 24px;
  color: var(--c-navy);
  margin-bottom: 8px;
}
.contact-form-desc {
  font-size: 14px;
  color: var(--c-text-light);
  margin-bottom: 28px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-navy);
  margin-bottom: 8px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  color: var(--c-text);
  background: var(--c-bg);
  transition: all var(--transition);
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--c-gold);
  background: var(--c-white);
  box-shadow: 0 0 0 3px rgba(200, 147, 46, 0.12);
}
.btn-full {
  width: 100%;
  justify-content: center;
  padding: 15px 32px;
  font-size: 16px;
}

/* 右侧联系信息 */
.contact-info-side {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.contact-info-card {
  background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-blue) 100%);
  border-radius: var(--radius-lg);
  padding: 32px;
  color: var(--c-white);
}
.contact-info-card h3 {
  font-size: 20px;
  margin-bottom: 8px;
}
.contact-info-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 24px;
}
.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact-info-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.ci-icon {
  width: 42px; height: 42px;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ci-icon svg {
  width: 20px; height: 20px;
  color: var(--c-gold-light);
}
.contact-info-list strong {
  display: block;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.65);
  font-weight: 500;
  margin-bottom: 4px;
}
.contact-info-list a,
.contact-info-list span {
  font-size: 14px;
  color: var(--c-white);
  line-height: 1.5;
  word-break: break-all;
}
.contact-info-list a:hover {
  color: var(--c-gold-light);
}

/* 扫码联系卡片（微信+WhatsApp并排） */
.contact-qr-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.contact-wechat-card {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.contact-wechat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--c-gold);
}
.contact-wechat-card h4 {
  font-size: 15px;
  color: var(--c-navy);
  margin-bottom: 12px;
}
.qr-img-box {
  width: 130px; height: 130px;
  margin: 0 auto 10px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #fff;
}
.qr-img-box img {
  width: 100%; height: 100%;
  object-fit: contain;
  display: block;
}
.contact-wechat-card > p {
  font-size: 12px;
  color: var(--c-text-light);
}

/* 响应式 */
@media (max-width: 900px) {
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .contact-form-card { padding: 24px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .contact-qr-row { grid-template-columns: 1fr 1fr; gap: 10px; }
  .contact-wechat-card { padding: 14px; }
  .qr-img-box { width: 110px; height: 110px; }
}

/* ============================================
   19. 关于我们页样式
   ============================================ */

/* 板块1：公司简介 */
.about-intro-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
  align-items: center;
}
.about-intro-text h2 {
  font-size: 28px;
  color: var(--c-navy);
  margin-bottom: 20px;
}
.about-intro-text p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-text);
  margin-bottom: 16px;
}
.about-intro-stats {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.about-stat {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-left: 4px solid var(--c-gold);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.about-stat:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
}
.about-stat-num {
  font-size: 34px;
  font-weight: 700;
  color: var(--c-blue);
  line-height: 1.1;
}
.about-stat-label {
  font-size: 13px;
  color: var(--c-text-light);
  margin-top: 4px;
}

/* 板块2：愿景（深蓝大字） */
.about-vision {
  background:
    radial-gradient(circle at 85% 15%, rgba(200, 147, 46, 0.15) 0%, transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(46, 123, 198, 0.2) 0%, transparent 45%),
    linear-gradient(135deg, var(--c-navy) 0%, var(--c-blue) 100%);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}
.vision-content {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  color: var(--c-white);
}
.vision-label {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 6px;
  color: var(--c-gold-light);
  border: 1px solid rgba(230, 180, 80, 0.45);
  padding: 6px 20px;
  border-radius: 20px;
  margin-bottom: 28px;
}
.vision-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 40px;
  letter-spacing: 1px;
}
.vision-lines p {
  font-size: 18px;
  line-height: 2.1;
  color: rgba(255, 255, 255, 0.85);
}
.vision-lines .vision-em {
  font-size: 22px;
  font-weight: 600;
  color: var(--c-gold-light);
  margin-top: 10px;
}

/* 板块3：核心团队 */
.about-team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.team-card {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 30px 24px;
  text-align: center;
  transition: all var(--transition);
}
.team-card:hover {
  transform: translateY(-6px);
  background: var(--c-white);
  box-shadow: var(--shadow-md);
  border-color: var(--c-gold);
}
.team-icon {
  width: 60px; height: 60px;
  margin: 0 auto 18px;
  background: linear-gradient(135deg, rgba(27, 79, 140, 0.08), rgba(46, 123, 198, 0.12));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.team-card:hover .team-icon {
  background: linear-gradient(135deg, var(--c-gold-light), var(--c-gold));
}
.team-icon svg {
  width: 28px; height: 28px;
  color: var(--c-blue);
  transition: color var(--transition);
}
.team-card:hover .team-icon svg {
  color: var(--c-white);
}
.team-card h3 {
  font-size: 16px;
  color: var(--c-navy);
  margin-bottom: 12px;
}
.team-card p {
  font-size: 13px;
  color: var(--c-text-light);
  line-height: 1.7;
}

/* 板块4：甄选流程 */
.about-sourcing-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
  position: relative;
}
.about-sourcing-grid::before {
  content: '';
  position: absolute;
  top: 24px; left: 10%; right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--c-blue-light), var(--c-gold));
  z-index: 0;
}
.sourcing-step {
  text-align: center;
  position: relative;
  z-index: 1;
}
.sourcing-num {
  width: 48px; height: 48px;
  margin: 0 auto 16px;
  background: var(--c-white);
  border: 3px solid var(--c-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--c-navy);
  box-shadow: var(--shadow-sm);
}
.sourcing-step h3 {
  font-size: 15px;
  color: var(--c-navy);
  margin-bottom: 8px;
}
.sourcing-step p {
  font-size: 12.5px;
  color: var(--c-text-light);
  padding: 0 4px;
  line-height: 1.6;
}

/* 关于页响应式 */
@media (max-width: 1024px) {
  .about-intro-grid { grid-template-columns: 1fr; gap: 32px; }
  .about-intro-stats { flex-direction: row; }
  .about-stat { flex: 1; }
  .about-team-grid { grid-template-columns: repeat(2, 1fr); }
  .about-sourcing-grid { grid-template-columns: repeat(3, 1fr); row-gap: 36px; }
  .about-sourcing-grid::before { display: none; }
}
@media (max-width: 600px) {
  .about-vision { padding: 64px 0; }
  .vision-title { font-size: 26px; }
  .vision-lines p { font-size: 15px; }
  .vision-lines .vision-em { font-size: 18px; }
  .about-intro-stats { flex-direction: column; }
  .about-team-grid { grid-template-columns: 1fr; }
  .about-sourcing-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================
   16. 产品中心专用样式
   ============================================ */

/* 页面横幅 */
.page-banner {
  margin-top: var(--nav-height);
  padding: 60px 0 50px;
  background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-blue) 100%);
  text-align: center;
  color: var(--c-white);
  position: relative;
  overflow: hidden;
}
.page-banner::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 60px;
  background: linear-gradient(to top, var(--c-bg), transparent);
}
.page-banner h1 {
  font-size: 34px;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
  z-index: 2;
}
.page-banner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
  position: relative;
  z-index: 2;
}

/* 产品筛选标签 */
.product-filter {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.filter-btn {
  padding: 8px 22px;
  border: 1px solid var(--c-border);
  background: var(--c-white);
  color: var(--c-text-light);
  border-radius: 20px;
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover,
.filter-btn.active {
  background: var(--c-blue);
  color: var(--c-white);
  border-color: var(--c-blue);
}

/* 产品卡片（产品页用，含真实图片） */
.product-card-real {
  background: var(--c-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--c-border);
}
.product-card-real:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.product-card-real .product-image-real {
  height: 240px;
  overflow: hidden;
  background: #fff;
  position: relative;
}
.product-card-real .product-image-real img {
  width: 100%; height: 100%;
  object-fit: contain;
  padding: 20px;
  transition: transform 0.5s ease;
}
.product-card-real:hover .product-image-real img {
  transform: scale(1.05);
}

/* 产品详情区块（单个系列展开） */
.product-detail {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 40px;
  border: 1px solid var(--c-border);
}
.product-detail-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.product-detail-image {
  height: 100%;
  min-height: 280px;
  max-height: 360px;
  overflow: hidden;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-detail-image img {
  max-width: 65%;
  max-height: 90%;
  object-fit: contain;
}
.product-detail-info {
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.product-detail-info h2 {
  font-size: 24px;
  color: var(--c-navy);
  margin-bottom: 6px;
}
.product-detail-info .en-name {
  font-size: 14px;
  color: var(--c-text-light);
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.product-detail-info .desc {
  font-size: 14px;
  color: var(--c-text);
  line-height: 1.8;
  margin-bottom: 20px;
}
.product-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}
.product-feature {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--c-text-light);
}
.product-feature strong {
  color: var(--c-navy);
  display: block;
}

/* 参数表格 */
.spec-table-wrap {
  padding: 0 0 32px;
  overflow-x: auto;
}
.spec-table-title {
  padding: 24px 40px 16px;
  font-size: 18px;
  font-weight: 600;
  color: var(--c-navy);
  border-bottom: 2px solid var(--c-gold);
  display: inline-block;
  margin: 0 40px;
}
.spec-table {
  width: calc(100% - 80px);
  margin: 0 40px;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 600px;
}
.spec-table thead {
  background: linear-gradient(135deg, var(--c-navy), var(--c-blue));
  color: var(--c-white);
}
.spec-table th {
  padding: 14px 12px;
  text-align: center;
  font-weight: 600;
  white-space: nowrap;
}
.spec-table td {
  padding: 12px;
  text-align: center;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text);
}
.spec-table tbody tr:nth-child(even) {
  background: var(--c-bg-alt);
}
.spec-table tbody tr:hover {
  background: rgba(200, 147, 46, 0.06);
}

/* 响应式 */
@media (max-width: 768px) {
  .product-detail-header { grid-template-columns: 1fr; }
  .product-detail-image { min-height: 220px; }
  .product-detail-info { padding: 24px; }
  .product-features { grid-template-columns: 1fr; }
  .spec-table-title { margin: 0 20px; padding: 20px 20px 12px; }
  .spec-table { width: calc(100% - 40px); margin: 0 20px; }
}