/* ============================================================
   B2B商铺单页样式 - 璟丰彩板净化
   工业制造风格，稳重硬朗，强调制造能力
   ============================================================ */

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "Microsoft YaHei", Arial, sans-serif;
  background: #f5f5f5;
  color: #333;
  font-size: 14px;
  line-height: 1.6;
}
a { text-decoration: none; color: #1a5276; transition: color 0.2s; }
a:hover { color: #0e3651; text-decoration: underline; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 15px; }

/* ============================================================
   顶部导航
   ============================================================ */
.b2b-shop-header {
  background: linear-gradient(135deg, #0e3651, #1a5276);
  color: #fff;
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,.15);
}
.b2b-shop-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.b2b-shop-logo {
  font-size: 18px;
  font-weight: bold;
  color: #fff;
}
.b2b-shop-logo:hover { text-decoration: none; color: #fff; }
.b2b-shop-nav { display: flex; gap: 6px; flex-wrap: nowrap; }
.b2b-shop-nav a {
  color: rgba(255,255,255,.85);
  font-size: 12px;
  padding: 6px 8px;
  border-radius: 4px;
  transition: all 0.2s;
  white-space: nowrap;
}
.b2b-shop-nav a:hover {
  background: rgba(255,255,255,.15);
  color: #fff;
  text-decoration: none;
}

/* ============================================================
   Banner
   ============================================================ */
.b2b-shop-banner {
  background: linear-gradient(135deg, #0b2e4a, #1a5276, #2471a3);
  color: #fff;
  padding: 48px 0;
  text-align: center;
}
.b2b-shop-banner h1 {
  font-size: 32px;
  margin-bottom: 12px;
}
.b2b-shop-banner p {
  font-size: 16px;
  opacity: 0.9;
  max-width: 800px;
  margin: 0 auto;
}
.banner-area {
  font-size: 14px;
  opacity: 0.85;
  margin-top: 8px;
}

/* Banner CTA */
.b2b-banner-cta-wrap {
  margin-top: 20px;
  text-align: center;
}
.b2b-banner-call {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  background: #e67e22;
  color: #fff;
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s;
}
.b2b-banner-call:hover {
  background: #cf6d17;
  text-decoration: none;
  color: #fff;
}
.b2b-banner-call .call-tel {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.b2b-banner-call .call-text {
  font-size: 14px;
  opacity: 0.95;
}

/* ============================================================
   商铺板块通用
   ============================================================ */
.b2b-shop-section { padding: 48px 0; }
.b2b-shop-section:nth-child(even) { background: #fff; }
.b2b-shop-section:nth-child(odd) { background: #f8fafc; }
.b2b-shop-section-title {
  text-align: center;
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 8px;
  color: #1e293b;
}
.b2b-shop-section-desc {
  text-align: center;
  color: #64748b;
  font-size: 15px;
  margin-bottom: 32px;
}
.b2b-shop-section-en {
  display: block;
  font-size: 14px;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-top: 4px;
}

/* ============================================================
   关于我们
   ============================================================ */
.b2b-about-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}
.b2b-about-text {
  font-size: 15px;
  color: #475569;
  line-height: 2;
}
.b2b-about-stats { display: flex; gap: 32px; margin-top: 24px; }
.b2b-about-stat-num {
  font-size: 32px;
  font-weight: bold;
  color: #1a5276;
}
.b2b-about-stat-label { font-size: 13px; color: #94a3b8; }
.b2b-about-image img {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,.1);
}
.b2b-about-contact {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed #e5e7eb;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 14px;
  color: #555;
}
.b2b-about-contact a {
  color: #1a5276;
  font-weight: 500;
}

/* ============================================================
   产品中心
   ============================================================ */
.b2b-product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.b2b-product-card {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
  transition: transform 0.2s, box-shadow 0.2s;
}
.b2b-product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0,0,0,.12);
}
.b2b-product-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: #f1f5f9;
}
.b2b-product-card-body { padding: 12px; }
.b2b-product-card-title {
  font-size: 14px;
  color: #333;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 产品对比表格 */
.b2b-product-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 24px;
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.b2b-product-table th,
.b2b-product-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid #e5e7eb;
  font-size: 14px;
}
.b2b-product-table th {
  background: #f1f5f9;
  color: #1e293b;
  font-weight: 600;
}
.b2b-product-table td { color: #475569; }
.b2b-product-table tr:last-child td { border-bottom: none; }
.b2b-product-table tr:hover td { background: #f8fafc; }

/* ============================================================
   核心优势
   ============================================================ */
.b2b-advantage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}
.b2b-advantage-card {
  text-align: center;
  padding: 28px 20px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.b2b-advantage-icon { font-size: 40px; margin-bottom: 12px; }
.b2b-advantage-title {
  font-size: 16px;
  font-weight: bold;
  margin-bottom: 8px;
  color: #1e293b;
}
.b2b-advantage-desc { font-size: 13px; color: #64748b; }

/* ============================================================
   适用场景
   ============================================================ */
.b2b-scene-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.b2b-scene-card {
  padding: 24px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
  border-left: 4px solid #1a5276;
}
.b2b-scene-card h3 {
  font-size: 16px;
  font-weight: bold;
  color: #1e293b;
  margin-bottom: 8px;
}
.b2b-scene-card p {
  font-size: 14px;
  color: #475569;
  line-height: 1.8;
}

/* ============================================================
   FAQ 常见问题
   ============================================================ */
.b2b-faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.b2b-faq-item {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 20px 24px;
  box-shadow: 0 1px 4px rgba(0,0,0,.04);
}
.b2b-faq-item h3 {
  font-size: 15px;
  font-weight: 600;
  color: #0e3651;
  margin-bottom: 8px;
  line-height: 1.5;
}
.b2b-faq-item p {
  font-size: 14px;
  color: #475569;
  line-height: 1.8;
}

/* ============================================================
   服务流程
   ============================================================ */
.b2b-process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}
.b2b-process-card { text-align: center; padding: 24px 16px; }
.b2b-process-icon { font-size: 36px; margin-bottom: 12px; }
.b2b-process-title {
  font-size: 15px;
  font-weight: bold;
  margin-bottom: 6px;
  color: #1e293b;
}
.b2b-process-desc { font-size: 13px; color: #64748b; }

/* ============================================================
   联系我们
   ============================================================ */
.b2b-contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}
.b2b-contact-card {
  text-align: center;
  padding: 24px 20px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.b2b-contact-icon { font-size: 32px; margin-bottom: 10px; }
.b2b-contact-label {
  font-size: 13px;
  color: #94a3b8;
  margin-bottom: 4px;
}
.b2b-contact-value {
  font-size: 16px;
  font-weight: bold;
  color: #1e293b;
  word-break: break-all;
}
.b2b-contact-value a { color: #1a5276; }

/* ============================================================
   推荐链接
   ============================================================ */
.b2b-recommend-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}
.b2b-recommend-group { margin-bottom: 20px; }
.b2b-recommend-group-title {
  font-size: 14px;
  font-weight: bold;
  color: #475569;
  margin-bottom: 8px;
}
.b2b-recommend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
}
.b2b-recommend-links a {
  color: #64748b;
  font-size: 12px;
  padding: 2px 8px;
  background: #f1f5f9;
  border-radius: 3px;
}
.b2b-recommend-links a:hover {
  background: #e8f0fe;
  color: #1a5276;
  text-decoration: none;
}

/* ============================================================
   商铺底部
   ============================================================ */
.b2b-shop-footer {
  background: #0b2e4a;
  color: #94a3b8;
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
}
.b2b-shop-footer p { margin: 4px 0; }
.b2b-shop-footer a { color: #93c5fd; }

/* ============================================================
   手机端悬浮拨号按钮
   ============================================================ */
.b2b-mobile-call-float {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: #fff;
  border-top: 1px solid #e5e7eb;
  padding: 10px 0;
  box-shadow: 0 -2px 12px rgba(0,0,0,.08);
}
.b2b-mobile-call-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80%;
  margin: 0 auto;
  min-height: 44px;
  border-radius: 999px;
  background: #1a5276;
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(26,82,118,.3);
}
.b2b-mobile-call-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26,82,118,.4);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 768px) {
  .b2b-product-grid { grid-template-columns: repeat(2, 1fr); }
  .b2b-about-wrap { grid-template-columns: 1fr; }
  .b2b-shop-nav { display: none; }
  .b2b-shop-banner h1 { font-size: 22px; }
  .b2b-shop-section { padding: 32px 0; }
  .b2b-shop-section-title { font-size: 22px; }
  .b2b-banner-call {
    flex-direction: column;
    padding: 12px 24px;
  }
  .b2b-mobile-call-float { display: block; }
  body { padding-bottom: 64px; }
}