:root { 
        --theme-blue: #d32f2f;
        --theme-blue-light: #F3F4F6;
        --theme-red: #E02424;
        --text-main: #111111;
        --text-muted: #4B5563;
        --border-color: #E5E7EB;
        --bg-light: #F9FAFB;
    }

    .product-page-container { 
        max-width: 1400px; 
        margin: 50px auto; 
        padding: 0 24px; 
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
        color: var(--text-main);
    }
    
    .product-hero-grid { 
        display: grid; 
        grid-template-columns: minmax(450px, 1.1fr) 1fr; 
        gap: 60px; 
        margin-bottom: 80px; 
        align-items: start;
    }
    @media (max-width: 991px) {
        .product-hero-grid { grid-template-columns: 1fr; gap: 40px; }
    }

    /* 图片容器：固定布局，拒绝自适应拉伸 */
    .product-media-col {
        width: 100%;
    }
    .gallery-main-wrap {
        margin-bottom: 15px;
    }
    /* 主图：固定比例、不拉伸、高清原图 */
    .gallery-main-img {
        width: 80% !important;
        height: auto !important;
        border-radius: 12px;
        display: block;
        object-fit: contain;
    }
    /* 缩略图栏 */
    .gallery-thumbs {
        display: flex;
        gap: 10px;
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .gallery-thumbs li {
        width: 80px;
        height: 80px;
        cursor: pointer;
        border-radius: 6px;
        overflow: hidden;
    }
    .gallery-thumbs img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: all 0.2s;
    }
    .gallery-thumbs li.active img {
        border: 2px solid var(--theme-blue);
        opacity: 0.85;
    }

    .product-info-col { 
        display: flex; 
        flex-direction: column;
        padding-top: 10px; 
    }
    .product-info-col .custom-breadcrumb { 
        font-size: 13px; 
        color: var(--text-muted); 
        margin-bottom: 15px;
        text-transform: uppercase;
        letter-spacing: 1px;
        font-weight: 500;
    }
    .product-info-col .custom-breadcrumb a { 
        color: var(--text-muted); 
        text-decoration: none; 
    }
    .prod-title { 
        font-size: 34px; 
        font-weight: 700; 
        line-height: 1.3;
        margin: 0 0 20px 0; 
        color: var(--text-main);
    }
    .prod-price { 
        font-size: 26px; 
        color:#d32f2f;
        font-weight: 700; 
        margin-bottom: 25px; 
    }
    .prod-desc { 
        font-size: 16px; 
        line-height: 1.7; 
        color: var(--text-muted);
        margin-bottom: 35px;
    }
    .action-box { 
        display: flex; 
        gap: 16px; 
        border-top: 1px solid var(--border-color); 
        padding-top: 35px; 
    }
    .btn-custom { 
        flex: 1;
        padding: 16px 32px; 
        border-radius: 6px;
        text-decoration: none; 
        font-weight: 600; 
        font-size: 16px;
        text-align: center; 
        transition: all 0.2s ease;
    }
    .btn-custom:hover { transform: translateY(-2px); box-shadow: 0 6px 15px rgba(0,0,0,0.12); }
    .btn-quote { 
        background:#ed5f2b;
        color: #ffffff; 
        border: none; 
        cursor: pointer; 
    }
    .btn-wa { 
        background: #25d366; 
        color: #ffffff; 
    }

    .custom-tabs-section {
        margin-top: 60px;
        border-top: 1px solid var(--border-color);
    }
    .tabs-nav {
        display: flex;
        justify-content: center; 
        gap: 60px;
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .tabs-nav li a {
        display: block;
        padding: 25px 10px;
        font-size: 18px;
        font-weight: 600;
        color: var(--text-muted);
        text-decoration: none;
    }
    .tabs-nav li.active a {
        color: var(--theme-blue);
    }
    .tabs-nav li.active::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 3px;
        background-color: var(--theme-blue);
        border-radius: 2px;
    }
    .tabs-content-wrapper {
        padding: 50px 10px;
    }
    .tab-panel {
        display: none;
        animation: fadeIn 0.3s ease-out;
    }
    .tab-panel.active {
        display: block;
    }
    .tab-panel-inner {
        font-size: 17px;
        line-height: 1.85;
        color: var(--text-main);
        max-width: 950px; 
        margin: 0 auto;
    }
    .commentlist { list-style: none; padding: 0; margin: 0; }
    .commentlist li { 
        background: var(--bg-light);
        padding: 30px;
        border-radius: 8px;
        margin-bottom: 20px; 
        border: 1px solid var(--border-color);
    }
    .related-products-wrapper {
        margin-top: 80px;
        border-top: 1px solid var(--border-color);
        padding-top: 60px;
    }
    
    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(4px); }
        to { opacity: 1; transform: translateY(0); }
    }
	
/* --- 1. Banner 样式（和你 ARCHIVE 页面完全一样） --- */
.page-header-banner {
  width: 100%;
  height: 350px;
  position: relative;
  overflow: hidden;
  margin-top: -20px;
}
.page-header-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-header-overlay {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  padding-right: 80px;
  z-index: 10;
  background: rgba(0, 0, 0, 0.4);
}

/* 📱 手机端完美适配（和你全站风格统一） */
@media (max-width: 992px) {
  .page-header-banner {
    height: 200px;
    margin-top: 0;
  }
  .page-header-overlay {
    align-items: center;
    padding-right: 0;
  }
}