:root {
    --primary: #0057CC;
    --primary-dark: #0046a6;
    --dark-navy: #001F3F;
    --text-dark: #111827;
    --text-gray: #4b5563;
    --light-bg: #f7f8fa;
    --border-color: #e5e7eb;
    --white: #ffffff;
}
.section-padding {
    padding: 60px 0;
}
.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* ========== 页面面包屑Banner ========== */
.storacage-page-hero {
    position: relative;
    height: 120px;
    display: flex;
    align-items: flex-end;
    padding-bottom:20px;
}
.storacage-page-hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}
.storacage-page-hero-bg img {
    width:100%;
    height:100%;
    object-fit:cover;
}
.storacage-page-hero-bg::after {
    content:"";
    position:absolute;
    inset:0;
    background-color: rgba(0, 31, 63, 0.55);
}
.storacage-breadcrumb {
    font-size:14px;
    color:#fff;
}
.storacage-breadcrumb a {
    color:#fff;
    text-decoration:none;
}
.storacage-breadcrumb span {
    margin:0 6px;
}
.storacage-breadcrumb .current {
    opacity:0.8;
}

/* ========== 产品头部布局：图库 + 信息 ========== */
.single-product-grid {
    display:grid;
    grid-template-columns: 1fr 1fr;
    gap:45px;
    align-items: start;
}

/* 图库区域 */
.main-preview-slide {
    position:relative;
    border:1px solid var(--border-color);
    overflow:hidden;
}
.main-image-box {
    min-height:340px;
    display:flex;
    align-items:center;
    justify-content:center;
    background:#fff;
    position:relative;
}
.main-image-box img {
    max-width:90%;
    max-height:320px;
    object-fit:contain;
}
.zoom-btn {
    position:absolute;
    top:12px;
    right:12px;
    width:32px;
    height:32px;
    border:1px solid #ddd;
    background:#fff;
    cursor:pointer;
}
.slide-arrow {
    position:absolute;
    top:50%;
    transform:translateY(-50%);
    width:38px;
    height:38px;
    border-radius:50%;
    border:none;
    background:#fff;
    cursor:pointer;
    box-shadow:0 2px 6px rgba(0,0,0,0.12);
    z-index:2;
}
.prev-main { left:12px; }
.next-main { right:12px; }

.thumbnail-slider {
    margin-top:16px;
    position:relative;
}
.thumb-track {
    display:flex;
    gap:10px;
    overflow-x:auto;
    padding:4px;
}
.thumb-item {
    width:84px;
    height:84px;
    border:2px solid transparent;
    cursor:pointer;
}
.thumb-item.active {
    border-color:var(--primary);
}
.thumb-item img {
    width:100%;
    height:100%;
    object-fit:cover;
}
.thumb-arrow {
    position:absolute;
    top:50%;
    transform:translateY(-50%);
    width:26px;
    height:26px;
    background:#fff;
    border:1px solid var(--border-color);
    cursor:pointer;
    z-index:2;
}
.prev-thumb { left:0; }
.next-thumb { right:0; }

/* 产品信息 */
.product-title {
    font-size:28px;
    margin:0 0 8px;
    color:var(--text-dark);
}
.product-subheading {
    color:var(--text-gray);
    font-weight:500;
    margin:0 0 12px;
}
.product-desc-short {
    line-height:1.6;
    font-size:15px;
    color:var(--text-gray);
    margin-bottom:24px;
}

.feature-icons-row {
    display:grid;
    grid-template-columns: repeat(4,1fr);
    gap:12px;
    margin-bottom:24px;
}
.icon-feature-item {
    text-align:center;
}
.icon-feature-item i {
    font-size:24px;
    color:var(--primary);
    margin-bottom:6px;
}
.icon-feature-item span {
    display:block;
    font-size:13px;
    line-height:1.4;
}

.spec-list {
    list-style:none;
    padding:0;
    margin:0 0 28px;
}
.spec-list li {
    padding:6px 0;
    font-size:14px;
}

/* 按钮样式 */
.btn-primary {
    display:inline-block;
    background: var(--primary);
    color:#fff;
    padding:12px 26px;
    text-decoration:none;
    font-size:14px;
    transition:0.2s;
    border:none;
}
.btn-primary:hover {
    background: var(--primary-dark);
}
.btn-outline {
    display:inline-block;
    border:1px solid var(--primary);
    color: var(--primary);
    padding:11px 26px;
    font-size:14px;
    text-decoration:none;
    margin-left:12px;
    transition:0.2s;
}
.btn-outline:hover {
    background: var(--primary);
    color:#fff;
}

/* ========== Tab选项卡 ========== */
.storacage-product-tabs {
    border-top:1px solid var(--border-color);
}
.tabs-header {
    display:flex;
    border-bottom:1px solid var(--border-color);
}
.tab-link {
    padding:16px 22px;
    background:transparent;
    border:none;
    font-size:14px;
    font-weight:600;
    cursor:pointer;
    position:relative;
}
.tab-link.active::after {
    content:"";
    position:absolute;
    bottom:-1px;
    left:0;
    width:100%;
    height:3px;
    background:var(--primary);
}
.tab-content {
    display:none;
    padding:35px 0;
}
.tab-content.active {
    display:block;
}
.tab-content-grid {
    display:grid;
    grid-template-columns: 1fr 1fr 280px;
    gap:30px;
}
.size-table {
    width:100%;
    border-collapse: collapse;
}
.size-table th, .size-table td {
    border:1px solid var(--border-color);
    padding:8px;
    text-align:center;
    font-size:14px;
}
.custom-size-note {
    font-size:13px;
    margin-top:10px;
}

/* ========== 相关产品 ========== */
.section-title {
    font-size:22px;
    margin:0 0 28px;
    padding-left:10px;
    border-left:3px solid var(--primary);
}
.related-slider-wrap {
    position:relative;
}
.related-track {
    display:flex;
    gap:24px;
    overflow-x:auto;
    padding:6px 0;
}
.related-product-card {
    min-width:210px;
    border:1px solid var(--border-color);
}
.related-product-card .product-img img {
    width:100%;
    height:160px;
    object-fit:contain;
}
.related-product-card h5 {
    font-size:15px;
    margin:10px 14px 6px;
}
.related-product-card .product-desc {
    font-size:12px;
    color:var(--text-gray);
    padding:0 14px;
    margin:0 0 10px;
}
.btn-text {
    display:inline-block;
    font-size:13px;
    color:var(--primary);
    text-decoration:none;
    padding:0 14px 14px;
}
.related-slide-arrow {
    position:absolute;
    top:50%;
    transform:translateY(-50%);
    width:34px;
    height:34px;
    border-radius:50%;
    border:1px solid var(--border-color);
    background:#fff;
    cursor:pointer;
    z-index:3;
}
.prev-related { left:-12px; }
.next-related { right:-12px; }

/* ========== 响应式适配 ========== */
@media(max-width:1024px){
    .single-product-grid {
        grid-template-columns:1fr;
    }
    .feature-icons-row {
        grid-template-columns: repeat(2,1fr);
    }
    .tab-content-grid {
        grid-template-columns:1fr;
    }
}
@media(max-width:640px){
    .tabs-header {
        flex-wrap:wrap;
    }
    .product-action-buttons {
        display:flex;
        flex-direction:column;
        gap:12px;
    }
    .btn-outline {
        margin-left:0;
    }
    .product-title {
        font-size:24px;
    }
}