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

:root {
    --primary-green: #869F48; /* 图片主绿色 */
    --dark-green: #5B7030;    /* 深绿 */
    --olive-green: #4A5D23;   /* 橄榄绿（统计栏背景） */
    --light-green: #E8F0D6;
    --text-black: #191919;
    --text-gray: #6E6E6E;
    --light-gray: #F6F6F6;
    --white: #ffffff;
    --dark-bg: #212121;       /* 页脚背景 */
    --border-gray: #e0e0e0;
}

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

/* 首页原有样式（导航/按钮/页脚等）保留，以下新增About页专属样式 */

/* About Banner 顶部Banner */
.about-banner {
    background: url('../images/banner.jpg') no-repeat center center;
    background-size: cover;
    padding: 60px 0;
    color: var(--white);
    position: relative;
}
.about-banner::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
}
.about-banner .container {
    position: relative;
    z-index: 1;
}
.banner-breadcrumb {
    font-size: 14px;
    margin-bottom: 16px;
}
.banner-breadcrumb a {
    color: var(--white);
    text-decoration: none;
}
.banner-breadcrumb span {
    color: var(--light-green);
}
.banner-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 12px;
}
.banner-subtitle {
    font-size: 16px;
    line-height: 1.5;
    opacity: 0.9;
}

/* Who We Are 核心内容区 */
.who-we-are {
    padding: 80px 0;
}
.who-we-are-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
    align-items: center;
}
.section-label {
    font-size: 14px;
    color: var(--primary-green);
    font-weight: 500;
    margin-bottom: 8px;
    text-transform: uppercase;
}
.section-heading {
    font-size: 28px;
    color: var(--text-black);
    margin-bottom: 20px;
    line-height: 1.3;
}
.section-desc {
    font-size: 15px;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 24px;
}
.feature-list {
    list-style: none;
    margin-bottom: 30px;
}
.feature-list li {
    font-size: 14px;
    color: var(--text-black);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.feature-list li i {
    color: var(--primary-green);
    font-size: 16px;
}
.view-more-btn {
    background: var(--primary-green);
    color: var(--white);
    padding: 12px 24px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background 0.3s ease;
}
.view-more-btn:hover {
    background: var(--dark-green);
}




.main-factory-img {
     height: 300px;
    object-fit: cover; /* 自动裁切，居中填充 */
    display: block;

    width: 100%;
    /* height: auto; */
    margin-bottom: 12px;
    border: 1px solid var(--border-gray);
}





.factory-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}
.factory-gallery img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border: 1px solid var(--border-gray);
}

/* 数据统计栏 */
.stats-bar {
    background: var(--olive-green);
    color: var(--white);
    padding: 60px 0;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}
.stat-item i {
    font-size: 36px;
    color: var(--light-green);
    margin-bottom: 16px;
}
.stat-number {
    font-size: 42px;
    font-weight: 700;
    display: block;
    margin-bottom: 8px;
}
.stat-label {
    font-size: 14px;
    text-transform: uppercase;
    opacity: 0.9;
}

/* Our Advantages 优势区 */
.our-advantages {
    padding: 80px 0;
    background: var(--light-gray);
}
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.advantage-card {
    background: var(--white);
    padding: 30px 20px;
    text-align: center;
    border: 1px solid var(--border-gray);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.advantage-icon {
    width: 70px;
    height: 70px;
    background: var(--light-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}
.advantage-icon i {
    font-size: 28px;
    color: var(--primary-green);
}
.advantage-card h3 {
    font-size: 18px;
    color: var(--text-black);
    margin-bottom: 12px;
}
.advantage-card p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.5;
}

/* Certificates 证书区 */
.certificates {
    padding: 80px 0;
}
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}
.cert-img {
    width: 100%;
    height: auto;
    border: 1px solid var(--border-gray);
    transition: transform 0.3s ease;
}
.cert-img:hover {
    transform: scale(1.05);
}

/* 响应式适配 - 平板768px */
@media screen and (max-width:768px) {
    /* About页响应式 */
    .who-we-are-grid {
        grid-template-columns: 1fr;
    }
    .factory-gallery {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .certificates-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }
    .banner-title {
        font-size: 32px;
    }
}

/* 响应式适配 - 手机480px */
@media screen and (max-width:480px) {
    /* About页响应式 */
    .factory-gallery {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    .certificates-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .banner-title {
        font-size: 26px;
    }
    .section-heading {
        font-size: 24px;
    }
}

/* 首页原有样式（导航/按钮/页脚/轮播等）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(--text-black);
}
.nav-list {
    display: flex;
    list-style: none;
    gap: 28px;
    align-items: center;
}
.nav-list li a {
    text-decoration: none;
    color: var(--text-black);
    font-size: 14px;
    font-weight: 500;
}
.nav-list li a.active {
    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: 24px;
}
.quote-btn:hover {
    background: var(--dark-green);
}
.hamburger {
    display: none;
    border: none;
    background: transparent;
    font-size: 22px;
    color: var(--text-black);
}
.footer {
    background: var(--dark-bg);
    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-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;
}
/* 首页其他样式（Hero/Products等）如需保留，粘贴到此处 */

/* 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;
    }
}