* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --color-dark-bg: #0f1c30;
    --color-darker: #070e19;
    --color-primary-blue: #1677ff;
    --color-blue-light: #42a5ff;
    --color-white: #ffffff;
    --color-gray-light: #f4f7fa;
    --color-text-dark: #1a202c;
    --color-text-gray: #64748b;
    --border-light:#dde2ec;
    --transition-base: all 0.3s ease;
}
body {
    font-family: 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    color: var(--color-text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    background-color: var(--color-gray-light);
}
ul {
    list-style: none;
}
a {
    text-decoration: none;
    color: inherit;
}
img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display:block;
}
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap:8px;
    padding:12px 24px;
    border-radius:4px;
    font-weight:600;
    font-size:14px;
    transition: var(--transition-base);
    border:none;
    cursor:pointer;
}
.btn-lg {
    padding:14px 26px;
    font-size:14px;
}
.btn-primary {
    background-color: var(--color-primary-blue);
    color: var(--color-white);
}
.btn-primary:hover {
    background-color:#0f64dd;
}
.btn-outline {
    background-color: transparent;
    color: var(--color-text-dark);
    border:1px solid var(--border-light);
}
.btn-outline:hover {
    border-color:var(--color-primary-blue);
    color:var(--color-primary-blue);
}
.btn-outline-white {
    background-color: transparent;
    color: #fff;
    border:1px solid rgba(255,255,255,0.45);
}
.btn-outline-white:hover {
    border-color:#fff;
}

/* ===== Header 和首页完全一致 ===== */
.site-header {
    position:absolute;
    width:100%;
    top:0;
    left:0;
    z-index:999;
    padding:16px 0;
}
.header-wrap {
    display:flex;
    justify-content: space-between;
    align-items:center;
}
.brand-logo {
    display:flex;
    align-items:center;
    gap:10px;
    color:#fff;
}
.logo-icon {
    font-size:24px;
}
.logo-text strong {
    display:block;
    font-size:18px;
    letter-spacing:1px;
}
.logo-text small {
    font-size:10px;
    opacity:0.8;
}
.main-nav {
    display:flex;
    align-items:center;
    gap:28px;
}
.nav-list {
    display:flex;
    gap:26px;
}
.nav-item a {
    color:#ffffff;
    font-size:14px;
    font-weight:500;
    display:flex;
    align-items:center;
    gap:4px;
}
.nav-item.active a {
    color: var(--color-blue-light);
}
.menu-toggle {
    display:none;
    background:transparent;
    border:none;
    color:#fff;
    font-size:24px;
}

/* Breadcrumb */
.breadcrumb-wrap {
    
    padding-top:116px;
    padding-bottom:16px;
}
.breadcrumbs {
    font-size:13px;
    color:var(--color-text-gray);
}
.breadcrumbs a {
    color:var(--color-primary-blue);
}
.breadcrumbs .current {
    color:var(--color-text-dark);
}

/* Product Detail Main */
.product-detail-main {
    background:#fff;
    padding-bottom:60px;
}
.product-detail-row {
    display:grid;
    grid-template-columns: 1fr 1fr;
    gap:40px;
    margin-bottom:40px;
}

/* Gallery */
.product-gallery {}
.main-img-box {
    position:relative;
    border-radius:4px;
    overflow:hidden;
    background:#f4f7fa;
    height:420px;
}
.zoom-icon {
    position:absolute;
    top:14px;
    right:14px;
    width:34px;
    height:34px;
    background:rgba(255,255,255,0.85);
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    color:#333;
}
.thumb-slider {
    display:flex;
    align-items:center;
    gap:10px;
    margin-top:14px;
}
.thumb-arrow {
    width:30px;
    height:30px;
    border-radius:50%;
    border:1px solid var(--border-light);
    background:#fff;
    cursor:pointer;
}
.thumb-list {
    display:flex;
    gap:10px;
    overflow-x:auto;
}
.thumb-item {
    width:100px;
    height:74px;
    border-radius:3px;
    overflow:hidden;
    cursor:pointer;
    border:2px solid transparent;
    flex-shrink:0;
}
.thumb-item.active {
    border-color:var(--color-primary-blue);
}

/* Product Info Right */
.product-info {}
.product-subtitle {
    font-size:13px;
    text-transform:uppercase;
    color:var(--color-primary-blue);
    font-weight:600;
    display:block;
    margin-bottom:6px;
}
.product-title {
    font-size:32px;
    line-height:1.25;
    margin-bottom:12px;
}
.product-meta {
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:14px;
}
.rating {
    display:flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    color:#f59e0b;
}
.rating span {
    color:var(--color-text-gray);
}
.sku {
    font-size:13px;
    color:var(--color-text-gray);
}
.product-desc-short {
    font-size:15px;
    color:var(--color-text-gray);
    margin-bottom:18px;
}
.feature-check-list {
    margin-bottom:26px;
}
.feature-check-list li {
    display:flex;
    align-items:center;
    gap:8px;
    margin-bottom:8px;
    font-size:14px;
}
.feature-check-list li i {
    color:var(--color-primary-blue);
}
.action-buttons {
    display:flex;
    gap:14px;
    margin-bottom:30px;
    flex-wrap:wrap;
}

/* 3 Highlight Icons */
.product-highlights {
    display:grid;
    grid-template-columns: repeat(3,1fr);
    gap:18px;
}
.highlight-item {
    text-align:center;
}
.hl-icon {
    width:52px;
    height:52px;
    border-radius:50%;
    background:#f0f6ff;
    color:var(--color-primary-blue);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:22px;
    margin:0 auto 10px;
}
.highlight-item h4 {
    font-size:14px;
    margin-bottom:4px;
}
.highlight-item p {
    font-size:12px;
    color:var(--color-text-gray);
}

/* Product Tabs */
.product-tabs {
    border-top:1px solid var(--border-light);
    margin-bottom:44px;
}
.tab-nav {
    display:flex;
    border-bottom:1px solid var(--border-light);
}
.tab-btn {
    padding:14px 20px;
    background:transparent;
    border:none;
    font-size:14px;
    font-weight:600;
    cursor:pointer;
    border-bottom:3px solid transparent;
}
.tab-btn.active {
    border-bottom-color:var(--color-primary-blue);
    color:var(--color-primary-blue);
}
.tab-content-wrap {
    padding-top:26px;
}
.tab-panel {
    display:none;
}
.tab-panel.active {
    display:block;
}
.two-col-tab {
    display:grid;
    grid-template-columns: 1fr;
    gap:34px;
}
.tab-left h3, .tab-right h3 {
    font-size:18px;
    margin-bottom:14px;
}
.mt-20 {
    margin-top:20px;
}
.key-feature-list li {
    display:flex;
    gap:8px;
    margin-bottom:8px;
    font-size:14px;
}
.key-feature-list i {
    color:var(--color-primary-blue);
}
.spec-table {
    width:100%;
    border-collapse: collapse;
    border:1px solid var(--border-light);
}
.spec-table td {
    padding:9px 12px;
    border-bottom:1px solid var(--border-light);
    font-size:13px;
}
.spec-table tr td:first-child {
    background-color:#f7f9fc;
    font-weight:500;
    width:42%;
}

/* Related Products */
.related-head {
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:20px;
}
.related-head h3 {
    font-size:20px;
}
.link-all-prod {
    font-size:13px;
    color:var(--color-primary-blue);
    font-weight:600;
    display:flex;
    align-items:center;
    gap:6px;
}
.related-grid {
    display:grid;
    grid-template-columns: repeat(6,1fr);
    gap:18px;
}
.product-card-sm {
    border:1px solid var(--border-light);
    border-radius:4px;
    overflow:hidden;
    transition:var(--transition-base);
}
.product-card-sm:hover {
    box-shadow:0 4px 14px rgba(0,0,0,0.07);
}
.product-card-sm .prod-img-wrap {
    height:140px;
}
.product-card-sm h4 {
    font-size:14px;
    padding:12px 12px 4px;
}
.product-card-sm p {
    font-size:12px;
    color:var(--color-text-gray);
    padding:0 12px 10px;
}
.card-link {
    display:block;
    font-size:12px;
    color:var(--color-primary-blue);
    padding:0 12px 12px;
    font-weight:600;
    display:flex;
    align-items:center;
    gap:5px;
}

/* Custom Solution Banner */
.custom-solution-banner {
    background-color:var(--color-dark-bg);
    color:#fff;
    padding:46px 0;
    background-image: radial-gradient(circle at right, rgba(66,165,255,0.12), transparent 60%);
}
.custom-banner-inner {
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:30px;
}
.custom-banner-text h2 {
    font-size:24px;
    margin-bottom:8px;
}
.custom-banner-text p {
    opacity:0.78;
    max-width:520px;
}
.custom-banner-btns {
    display:flex;
    gap:14px;
    flex-wrap:wrap;
}

/* ===== Footer 完整复刻截图 ===== */
.site-footer {
    background-color:#070e19;
    color:#bbbbbb;
    padding:54px 0 24px;
    font-size:13px;
}
.footer-top {
    display:grid;
    grid-template-columns: 1.8fr repeat(4, 1fr);
    gap:32px;
    margin-bottom:40px;
}
.footer-logo {
    margin-bottom:14px;
}
.brand-col p {
    margin-bottom:18px;
    line-height:1.65;
}
.social-links {
    display:flex;
    gap:14px;
}
.social-links a {
    width:32px;
    height:32px;
    border-radius:50%;
    border:1px solid rgba(255,255,255,0.2);
    display:flex;
    align-items:center;
    justify-content:center;
}
.footer-col h4 {
    color:#fff;
    font-size:15px;
    margin-bottom:16px;
}
.footer-col ul li {
    margin-bottom:9px;
}
.footer-col ul li a:hover {
    color:var(--color-blue-light);
}
.contact-footer-list li {
    display:flex;
    gap:8px;
}
.footer-bottom {
    display:flex;
    justify-content:space-between;
    padding-top:20px;
    border-top:1px solid rgba(255,255,255,0.08);
}
.footer-links a {
    margin-left:22px;
}

/* ===== 响应式适配 ===== */
@media(max-width:1200px) {
    .related-grid {
        grid-template-columns: repeat(3,1fr);
    }
}
@media(max-width:1024px) {
    .product-detail-row {
        grid-template-columns: 1fr;
    }
    .two-col-tab {
        grid-template-columns: 1fr;
    }
    .product-highlights {
        grid-template-columns: repeat(3,1fr);
    }
    .footer-top {
        grid-template-columns: repeat(2,1fr);
    }
}
@media(max-width:768px) {
    .main-nav {
        display:none;
    }
    .menu-toggle {
        display:block;
    }
    .product-title {
        font-size:24px;
    }
    .main-img-box {
        height:320px;
    }
    .product-highlights {
        grid-template-columns: 1fr;
    }
    .related-grid {
        grid-template-columns: repeat(2,1fr);
    }
    .custom-banner-inner {
        flex-direction:column;
        text-align:center;
    }
    .footer-top {
        grid-template-columns:1fr;
    }
    .footer-bottom {
        flex-direction:column;
        gap:10px;
    }
    .tab-nav {
        flex-wrap:wrap;
    }
}
@media(max-width:480px) {
    .action-buttons {
        flex-direction:column;
    }
    .related-grid {
        grid-template-columns:1fr;
    }
}