/* 重置样式 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    @media screen and (min-width: 768px) {
        .menu-toggle{display: none;}
    }
    :root {
        --primary-color: #1a1a1a;
        --accent-color: #8b5d33;
        --text-color: #333;
        --light-bg: #f8f8f8;
        --white: #ffffff;
        --shadow: 0 2px 10px rgba(0,0,0,0.1);
        --transition: all 0.3s ease;
    }

    body {
        font-family: 'Segoe UI', system-ui, sans-serif;
        line-height: 1.6;
        color: var(--text-color);
        overflow-x: hidden;
    }

    /* 通用容器 */
    .container {
        max-width: 1400px;
        margin: 0 auto;
        padding: 0 20px;
    }

    /* 导航栏 */
    header {
        position: fixed;
        width: 100%;
        top: 0;
        left: 0;
        background: rgba(255,255,255,0.95);
        box-shadow: var(--shadow);
        z-index: 100;
        backdrop-filter: blur(10px);
        padding: 0 20px;
    }

    nav {
        height: 80px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        max-width: 1400px;
        margin: 0 auto;
    }

    .nav-container {
        display: flex;
        align-items: center;
        gap: 50px;
    }

    .logo img {
        height: 50px;
        object-fit: contain;
    }

    .nav-links {
        display: flex;
        gap: 30px;
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .nav-links a {
        color: var(--primary-color);
        text-decoration: none;
        font-size: 16px;
        font-weight: 500;
        transition: var(--transition);
        padding: 8px 15px;
        border-radius: 20px;
    }

    .nav-links a:hover {
        background: var(--accent-color);
        color: var(--white);
    }

    /* 语言切换 */
    .language-switch {
        display: flex;
        align-items: center;
        gap: 5px;
    }

    .language-switch button {
        background: none;
        border: 2px solid var(--accent-color);
        padding: 5px 5px;
        cursor: pointer;
        font-size: 14px;
        color: var(--accent-color);
        transition: var(--transition);
        border-radius: 4px;
    }

    .language-switch button.active {
        background: var(--accent-color);
        color: var(--white);
    }

    .language-switch button:hover:not(.active) {
        background: rgba(139, 93, 51, 0.1);
    }

    /* 首页区域 */
    .hero-section {
        height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        position: relative;
        background: url('../images/01.jpg') no-repeat center center;
        background-size: cover;
        color: var(--white);
        padding: 0 20px;
    }

    .hero-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1;
    }

    .hero-content {
        position: relative;
        z-index: 2;
        max-width: 800px;
    }

    .hero-title {
        font-size: 3.5em;
        margin-bottom: 20px;
        font-weight: 600;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    }

    .hero-subtitle {
        font-size: 1.5em;
        margin-bottom: 30px;
        line-height: 1.6;
        text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
    }

    /* 关于我们 */
    .about-section {
        padding: 100px 0;
        background: var(--light-bg);
        position: relative;
        overflow: hidden;
    }

    .about-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 60px;
        align-items: center;
    }

    .about-image {
        position: relative;
        border-radius: 20px;
        overflow: hidden;
        box-shadow: var(--shadow);
    }

    .about-image::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(45deg, rgba(139, 93, 51, 0.2), transparent);
        z-index: 1;
    }

    .about-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
        transform: scale(1.01);
        transition: transform 0.6s ease;
    }

    .about-image:hover img {
        transform: scale(1.05);
    }

    .about-content {
        padding-right: 20px;
    }

    .about-content h2 {
        font-size: 2.5em;
        color: var(--primary-color);
        margin-bottom: 30px;
        position: relative;
    }

    .about-content h2::after {
        content: '';
        position: absolute;
        bottom: -10px;
        left: 0;
        width: 60px;
        height: 3px;
        background: var(--accent-color);
    }

    .about-content p {
        color: var(--text-color);
        line-height: 1.8;
        margin-bottom: 20px;
        font-size: 1.1em;
    }

    .about-features {
        margin-top: 30px;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .feature-item {
        display: flex;
        align-items: center;
        gap: 15px;
    }

    .feature-icon {
        width: 40px;
        height: 40px;
        background: var(--accent-color);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--white);
        font-size: 1.2em;
    }

    @media screen and (max-width: 768px) {
        .about-container {
            grid-template-columns: 1fr;
            gap: 40px;
        }

        .about-content {
            padding-right: 0;
        }

        .about-features {
            grid-template-columns: 1fr;
        }
    }

    /* 产品展示 */
    .section {
        padding: 35px 0;
    }

    .section-title {
        text-align: center;
        font-size: 2.5em;
        margin-bottom: 50px;
        color: var(--primary-color);
    }

    .products-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
        padding: 20px;
    }

    .product-card {
        background: var(--white);
        border-radius: 15px;
        overflow: hidden;
        box-shadow: var(--shadow);
        transition: var(--transition);
        cursor: pointer;
    }

    .product-card:hover {
        transform: translateY(-5px);
    }

    .product-image {
        position: relative;
        height: 300px;
        overflow: hidden;
    }

    .product-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: var(--transition);
    }

    .product-info {
        padding: 20px;
        text-align: center;
    }

    .product-info h3 {
        margin-bottom: 10px;
        color: var(--primary-color);
    }

    /* 视频展示 */
    .video-section {
        background: var(--primary-color);
        position: relative;
        overflow: hidden;
        padding: 120px 0;
    }

    .video-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url('../images/bj1.jpg') repeat;
        opacity: 0.05;
        pointer-events: none;
    }

    .video-section .section-title {
        color: var(--white);
        font-size: 2.8em;
        margin-bottom: 60px;
        text-align: center;
        position: relative;
    }

    .video-section .section-title::after {
        content: '';
        position: absolute;
        bottom: -15px;
        left: 50%;
        transform: translateX(-50%);
        width: 100px;
        height: 3px;
        background: var(--accent-color);
    }

    .video-grid {
        max-width: 1000px;
        margin: 0 auto;
        padding: 0 20px;
        position: relative;
    }

    .video-card {
        background: rgba(255, 255, 255, 0.03);
        border-radius: 20px;
        overflow: hidden;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        transition: var(--transition);
        position: relative;
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .video-wrapper {
        position: relative;
        padding-top: 56.25%;
        background: #000;
    }

    .video-wrapper video {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .video-info {
        padding: 30px;
        background: linear-gradient(to bottom, rgba(0,0,0,0.3), rgba(0,0,0,0.6));
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .video-info h3 {
        color: var(--white);
        font-size: 1.6em;
        margin-bottom: 15px;
        font-weight: 500;
    }

    .video-info p {
        color: rgba(255, 255, 255, 0.8);
        line-height: 1.6;
        font-size: 1.1em;
    }

    .video-card::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: linear-gradient(to right, var(--accent-color), transparent);
        transform: scaleX(0);
        transform-origin: left;
        transition: transform 0.3s ease;
    }

    .video-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
    }

    .video-card:hover::after {
        transform: scaleX(1);
    }

    @media screen and (max-width: 768px) {
        .hero-title {
            font-size: 2.5em;
        }

        .hero-subtitle {
            font-size: 1.2em;
        }

        .video-section {
            padding: 80px 0;
        }

        .video-section .section-title {
            font-size: 2.2em;
            margin-bottom: 40px;
        }

        .video-info h3 {
            font-size: 1.4em;
        }
    }

    /* 联系我们 */
    .contact-section {
        background: var(--light-bg);
        padding: 100px 0;
    }

    .contact-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
        max-width: 1200px;
        margin: 0 auto;
    }

    .contact-card {
        background: var(--white);
        padding: 30px;
        border-radius: 15px;
        box-shadow: var(--shadow);
        text-align: center;
        transition: var(--transition);
    }

    .contact-card:hover {
        transform: translateY(-5px);
    }

    .contact-icon {
        width: 60px;
        height: 60px;
        /* background: var(--accent-color); */
        background: #ededed;
        border-radius: 50%;
        margin: 0 auto 20px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--white);
        font-size: 24px;
    }

    .contact-card h3 {
        color: var(--primary-color);
        margin-bottom: 15px;
        font-size: 1.2em;
    }

    .contact-card p, .contact-card a {
        color: var(--text-color);
        text-decoration: none;
        transition: var(--transition);
    }

    .contact-card a:hover {
        color: var(--accent-color);
    }

    /* 页脚 */
    footer {
        background: var(--primary-color);
        color: var(--white);
        padding: 50px 0 20px;
    }

    .footer-content {
        max-width: 1200px;
        margin: 0 auto;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 40px;
        padding: 0 20px;
        margin-bottom: 40px;
    }

    .footer-section h3 {
        color: var(--white);
        margin-bottom: 20px;
        font-size: 1.2em;
    }

    .footer-section p {
        color: rgba(255,255,255,0.7);
        margin-bottom: 10px;
        font-size: 0.9em;
    }

    .footer-links {
        list-style: none;
        padding: 0;
    }

    .footer-links li {
        margin-bottom: 10px;
    }

    .footer-links a {
        color: rgba(255,255,255,0.7);
        text-decoration: none;
        transition: var(--transition);
    }

    .footer-links a:hover {
        color: var(--white);
    }

    .footer-bottom {
        text-align: center;
        padding-top: 20px;
        border-top: 1px solid rgba(255,255,255,0.1);
        color: rgba(255,255,255,0.5);
        font-size: 0.9em;
    }

    /* 产品轮播弹窗 */
    .modal {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.9);
        z-index: 1000;
    }

    .modal-content {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 80%;
        max-width: 1000px;
    }

    .close-modal {
        position: absolute;
        right: 20px;
        top: 20px;
        color: var(--white);
        font-size: 30px;
        cursor: pointer;
        z-index: 1001;
    }

    .slider {
        position: relative;
        width: 100%;
        height: 500px;
        overflow: hidden;
    }

    .slider-container {
        display: flex;
        transition: transform 0.5s ease;
        height: 100%;
    }

    .slider-slide {
        flex: 0 0 100%;
        height: 100%;
    }

    .slider-slide img {
        width: 100%;
        height: 100%;
        object-fit: contain;
    }

    .slider-button {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        background: rgba(255,255,255,0.2);
        color: var(--white);
        border: none;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        cursor: pointer;
        transition: var(--transition);
    }

    .slider-button:hover {
        background: rgba(255,255,255,0.3);
    }

    .slider-button.prev {
        left: 20px;
    }

    .slider-button.next {
        right: 20px;
    }

    /* 响应式设计 */
    @media screen and (max-width: 768px) {
        .menu-toggle {
            display: block;
        }

        .nav-links {
            display: none;
            position: absolute;
            top: 80px;
            left: 0;
            width: 100%;
            background: var(--white);
            flex-direction: column;
            padding: 20px;
            gap: 15px;
            box-shadow: var(--shadow);
        }

        .nav-links.active {
            display: flex;
        }

        .hero-content h1 {
            font-size: 2.5em;
        }

        .section-title {
            font-size: 2em;
        }

        .video-grid {
            grid-template-columns: 1fr;
        }

        .modal-content {
            width: 95%;
        }

        .slider {
            height: 300px;
        }
    }