/* 全局重置 + 首页/About/Contact/Products页原有样式（保留不变） */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
}

:root {
    /* 严格匹配图片配色 */
    --primary-green: #869F48;    /* 主绿色（按钮/标题下划线/定制栏背景） */
    --dark-green: #5B7030;       /* 深绿色（按钮hover/辅助色） */
    --light-green: #E8F0D6;      /* 浅绿（辅助色） */
    --black: #000000;            /* 纯黑（面包屑背景/相关产品背景） */
    --dark-gray: #212121;        /* 深灰（页脚背景） */
    --mid-gray: #6E6E6E;         /* 中灰（次要文本） */
    --light-gray: #F6F6F6;       /* 浅灰（背景） */
    --white: #ffffff;            /* 白色（主体背景） */
    --border-gray: #e0e0e0;      /* 边框色 */
}

.container {
    width: 92%;
    max-width: 1240px;
    margin: 0 auto;
}

/* 首页/About/Contact/Products页原有样式（导航/按钮/页脚等）保留，以下新增产品详情页专属样式 */

/* 面包屑导航 */
.breadcrumb-section {
    background: var(--black);
    padding: 12px 0;
    color: var(--white);
}
.breadcrumb-wrapper {
    font-size: 13px;
}
.breadcrumb-wrapper a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
}
.breadcrumb-wrapper a:hover {
    color: var(--primary-green);
    opacity: 1;
}
.breadcrumb-wrapper span {
    color: var(--primary-green);
}
.breadcrumb-wrapper > * {
    margin: 0 4px;
}

/* 产品详情核心区 */
.product-detail-main {
    padding: 50px 0;
    background: var(--white);
}
.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

/* 左侧产品图片区 */
.product-gallery {
    display: flex;
    gap: 20px;
}
.thumbnail-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.thumbnail-item {
    width: 80px;
    height: 80px;
    border: 1px solid var(--border-gray);
    padding: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.thumbnail-item.active {
    border-color: var(--primary-green);
}
.thumbnail-item:hover {
    border-color: var(--primary-green);
}
.thumbnail-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.main-product-img {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}
.main-product-img img {
    max-width: 100%;
    height: auto;
}

/* 右侧产品信息区 */
.product-info {
    padding-top: 20px;
}
.product-category {
    font-size: 14px;
    color: var(--primary-green);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
    display: inline-block;
}
.product-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 12px;
    line-height: 1.2;
}
.product-tagline {
    font-size: 16px;
    color: var(--mid-gray);
    font-style: italic;
    margin-bottom: 20px;
}
.product-desc {
    font-size: 14px;
    line-height: 1.6;
    color: var(--mid-gray);
    margin-bottom: 30px;
}

/* 产品核心卖点 */
.product-benefits {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 30px;
}
.benefit-item {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}
.benefit-item i {
    font-size: 18px;
    color: var(--primary-green);
    margin-top: 2px;
}
.benefit-content h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 4px;
}
.benefit-content p {
    font-size: 12px;
    color: var(--mid-gray);
    line-height: 1.4;
}

/* 操作按钮 */
.product-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}
.btn {
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}
.primary-btn {
    background: var(--primary-green);
    color: var(--white);
    border: none;
}
.primary-btn:hover {
    background: var(--dark-green);
}
.secondary-btn {
    background: var(--white);
    color: var(--black);
    border: 1px solid var(--border-gray);
}
.secondary-btn:hover {
    border-color: var(--primary-green);
    color: var(--primary-green);
}

/* 企业优势栏 */
.company-advantages {
    background: var(--light-gray);
    padding: 25px 0;
    border-top: 1px solid var(--border-gray);
    border-bottom: 1px solid var(--border-gray);
}
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}
.advantage-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}
.advantage-block i {
    font-size: 24px;
    color: var(--primary-green);
    margin-bottom: 5px;
}
.advantage-number {
    font-size: 20px;
    font-weight: 700;
    color: var(--black);
}
.advantage-text {
    font-size: 13px;
    color: var(--mid-gray);
}

/* 产品规格+特性区 */
.product-specs-features {
    padding: 60px 0;
    background: var(--white);
}
.specs-features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}
.section-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}
.section-title::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 2px;
    background: var(--primary-green);
}

/* 产品规格表 */
.product-specs {
    padding-right: 20px;
}
.specs-table {
    border: 1px solid var(--border-gray);
}
.spec-row {
    display: flex;
    border-bottom: 1px solid var(--border-gray);
}
.spec-row:last-child {
    border-bottom: none;
}
.spec-label {
    width: 35%;
    padding: 12px 15px;
    background: var(--light-gray);
    font-weight: 500;
    font-size: 13px;
    color: var(--black);
}
.spec-value {
    width: 65%;
    padding: 12px 15px;
    font-size: 13px;
    color: var(--mid-gray);
    line-height: 1.4;
}

/* 产品特性列表 */
.product-features {
    padding-left: 20px;
}
.features-list {
    list-style: none;
}
.feature-item {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    align-items: flex-start;
}
.feature-item:last-child {
    margin-bottom: 0;
}
.feature-item i {
    font-size: 20px;
    color: var(--primary-green);
    margin-top: 2px;
}
.feature-content h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 6px;
}
.feature-content p {
    font-size: 13px;
    color: var(--mid-gray);
    line-height: 1.5;
}

/* 应用场景区 */
.product-applications {
    padding: 60px 0;
    background: var(--light-gray);
}
.applications-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.application-item {
    position: relative;
    overflow: hidden;
}
.application-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.application-item:hover img {
    transform: scale(1.05);
}
.application-name {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(0,0,0,0.7);
    color: var(--white);
    padding: 10px;
    font-size: 14px;
    text-align: center;
}




.application-name a{
	text-decoration:none;
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(0,0,0,0.7);
    color: var(--white);
    padding: 10px;
    font-size: 14px;
    text-align: center;
}






/* 相关产品区 */
.related-products {
    padding: 60px 0;
    background: var(--black);
    color: var(--white);
}
.related-products .section-title {
    color: var(--white);
}
.related-products .section-title::after {
    background: var(--white);
}
.related-products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.related-product-card {
    background: var(--dark-gray);
    padding: 15px;
    transition: all 0.3s ease;
}
.related-product-card:hover {
    background: var(--primary-green);
}
.related-product-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    margin-bottom: 15px;
}
.related-product-title {
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 10px;
}
.view-more-link {
    font-size: 13px;
    color: var(--white);
    text-decoration: none;
}
.related-product-card:hover .view-more-link {
    text-decoration: underline;
}

/* 定制解决方案栏 */
.custom-solution-bar {
    background: var(--primary-green);
    padding: 30px 0;
    color: var(--white);
}
.solution-bar-grid {
    display: grid;
    grid-template-columns: 2fr 2fr 1fr;
    gap: 20px;
    align-items: center;
}
.solution-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}
.solution-subtitle {
    font-size: 14px;
    opacity: 0.9;
}
.solution-benefits {
    display: flex;
    gap: 30px;
    justify-content: center;
}
.solution-benefit-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}
.solution-benefit-item i {
    font-size: 18px;
}
.send-inquiry-btn {
    background: var(--white);
    color: var(--primary-green);
    padding: 12px 20px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    display: block;
    transition: all 0.3s ease;
}
.send-inquiry-btn:hover {
    background: var(--black);
    color: var(--white);
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 40px;
    height: 40px;
    background: var(--primary-green);
    color: var(--white);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}
.back-to-top:hover {
    background: var(--dark-green);
}

/* 响应式适配 - 平板768px */
@media screen and (max-width:768px) {
    /* 产品详情页响应式 */
    .product-detail-grid {
        grid-template-columns: 1fr;
    }
    .product-gallery {
        flex-direction: column;
    }
    .thumbnail-list {
        flex-direction: row;
        justify-content: center;
    }
    .product-benefits {
        grid-template-columns: 1fr;
    }
    .specs-features-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .product-specs, .product-features {
        padding: 0;
    }
    .applications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .related-products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .solution-bar-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .solution-benefits {
        justify-content: center;
        margin: 15px 0;
    }
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .product-title {
        font-size: 28px;
    }
}

/* 响应式适配 - 手机480px */
@media screen and (max-width:480px) {
    /* 产品详情页响应式 */
    .applications-grid {
        grid-template-columns: 1fr;
    }
    .related-products-grid {
        grid-template-columns: 1fr;
    }
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    .solution-benefits {
        flex-direction: column;
        gap: 10px;
    }
    .product-title {
        font-size: 24px;
    }
    .spec-row {
        flex-direction: column;
    }
    .spec-label, .spec-value {
        width: 100%;
    }
    .product-actions {
        flex-direction: column;
    }
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* 首页/About/Contact/Products页原有样式（导航/按钮/页脚/响应式等）粘贴到此处，保持和之前一致 */
.header {
    background: var(--white);
    padding: 16px 0;
    box-shadow: 0 1px 6px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 999;
}
.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo img {
    height: 58px;
}
.logo-text {
    font-size: 13px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--black);
}
.nav-list {
    display: flex;
    list-style: none;
    gap: 28px;
    align-items: center;
}
.nav-list li a {
    text-decoration: none;
    color: var(--black);
    font-size: 14px;
    font-weight: 500;
}
.nav-list li a.active,
.nav-list li.dropdown.active > a {
    color: var(--primary-green);
}
.nav-list li a:hover {
    color: var(--primary-green);
}
.dropdown {
    position: relative;
}
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 200px;
    background: var(--white);
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    list-style: none;
    padding: 12px 0;
    display: none;
}
.dropdown-menu li {
    padding: 8px 20px;
}
.dropdown:hover .dropdown-menu {
    display: block;
}
.quote-btn {
    background: var(--primary-green);
    color: var(--white);
    padding: 10px 22px;
    text-decoration: none;
    font-size: 14px;
    border-radius: 0;
}
.quote-btn:hover {
    background: var(--dark-green);
}
.hamburger {
    display: none;
    border: none;
    background: transparent;
    font-size: 22px;
    color: var(--black);
}

/* 页脚样式 */
.footer {
    background: var(--dark-gray);
    color: var(--white);
    padding: 50px 0 24px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
    gap: 30px;
    margin-bottom: 40px;
}
.footer-logo {
    margin-bottom: 15px;
}
.footer-col h3 {
    font-size: 16px;
    padding-bottom: 10px;
    margin-bottom: 18px;
    position: relative;
}
.footer-col h3::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 48px;
    height: 2px;
    background: var(--primary-green);
}
.footer-col p {
    font-size: 13px;
    opacity: 0.8;
    line-height: 1.6;
    margin-bottom: 18px;
}
.footer-col ul {
    list-style: none;
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col ul li a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    font-size: 13px;
}
.footer-col ul li a:hover {
    color: var(--primary-green);
}
.social-icons {
    display: flex;
    gap: 12px;
}
.social-icons a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
}
.social-icons a:hover {
    background: var(--primary-green);
}
.contact-col li {
    display: flex;
    gap: 8px;
    font-size: 13px;
    margin-bottom: 12px;
    opacity: 0.85;
}
.contact-col li i {
    color: var(--primary-green);
    margin-top: 2px;
}
.copyright {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
}
.copyright p {
    font-size: 12px;
    opacity: 0.7;
}

/* 响应式通用样式 */
@media screen and (max-width:768px) {
    .hamburger {
        display: block;
    }
    .main-nav {
        position: fixed;
        top: 0;
        right: -320px;
        width: 300px;
        height: 100vh;
        background: var(--white);
        padding: 30px 20px;
        box-shadow: -2px 0 8px rgba(0,0,0,0.1);
        transition: right 0.3s ease;
        z-index: 1000;
    }
    .main-nav.active {
        right: 0;
    }
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    .header-quote {
        display: none;
    }
    .footer-grid {
        grid-template-columns: repeat(2,1fr);
    }
}
@media screen and (max-width:480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}