:root {
    --primary-color: #1a5f7a;
    --primary-dark: #134b61;
    --primary-light: #2980b9;
    --secondary-color: #16a085;
    --accent-color: #27ae60;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 4px 15px rgba(0,0,0,0.1);
    --shadow-hover: 0 8px 25px rgba(0,0,0,0.15);
    --gradient: linear-gradient(135deg, var(--primary-color), var(--primary-light));
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
}

.container-a16d61 {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header-8bedc3 {
    background: var(--bg-white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header-inner-4a6fe6 {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo-cb109d {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.logo-cb109d i {
    margin-right: 8px;
}

.nav-menu-f5bfae {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu-f5bfae a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu-f5bfae a:hover {
    color: var(--primary-color);
}

.menu-toggle-637ac6 {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--primary-color);
}

/* Hero Section */
.hero-a1c873 {
    background: var(--gradient);
    padding: 150px 20px 100px;
    text-align: center;
    color: white;
}

.hero-a1c873 h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero-a1c873 p {
    font-size: 20px;
    max-width: 700px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

.hero-badges-1ee729 {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-top: 40px;
}

.badge-item-b59852 {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,0.15);
    padding: 12px 25px;
    border-radius: 50px;
}

.badge-item-b59852 i {
    font-size: 24px;
}

/* Section Common */
.section-c2d2a9 {
    padding: 80px 20px;
}

.section-alt-1e611f {
    background: var(--bg-light);
}

.section-title-66033b {
    text-align: center;
    margin-bottom: 20px;
}

.section-title-66033b h2 {
    font-size: 36px;
    color: var(--text-dark);
    position: relative;
    display: inline-block;
}

.section-title-66033b h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

.section-intro-7b2a7f {
    text-align: center;
    color: var(--text-light);
    max-width: 700px;
    margin: 30px auto 50px;
    font-size: 16px;
}

/* Products Section */
.products-grid-46cdeb {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card-49b3ba {
    background: var(--bg-white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.product-card-49b3ba:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.product-img-f170c6 {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    position: relative;
    overflow: hidden;
}

.product-img-f170c6 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-content-94e535 {
    padding: 25px;
}

.product-content-94e535 h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.product-content-94e535 p {
    color: var(--text-light);
    font-size: 14px;
}

/* Services Section */
.services-grid-18c8d0 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card-c650c2 {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    border: 2px solid transparent;
}

.service-card-c650c2:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.service-icon-fdb19f {
    width: 80px;
    height: 80px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.service-icon-fdb19f i {
    font-size: 32px;
    color: white;
}

.service-card-c650c2 h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.service-card-c650c2 p {
    color: var(--text-light);
    font-size: 14px;
}

/* About Section */
.about-content-dba022 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text-9a5ae2 h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.about-text-9a5ae2 p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-features-9b9100 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 30px;
}

.about-feature-bb7f05 {
    display: flex;
    align-items: center;
    gap: 10px;
}

.about-feature-bb7f05 i {
    color: var(--accent-color);
    font-size: 20px;
}

.about-img-d6d7e9 {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.about-img-d6d7e9 img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

/* Cases Section */
.cases-grid-dbdfb5 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.case-card-8c4cc6 {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    height: 250px;
    cursor: pointer;
}

.case-card-8c4cc6 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.case-card-8c4cc6:hover img {
    transform: scale(1.1);
}

.case-overlay-84bb95 {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    padding: 20px;
    color: white;
}

.case-overlay-84bb95 h4 {
    font-size: 16px;
}

/* News Section */
.news-grid-9df851 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card-3f057e {
    background: var(--bg-white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.news-card-3f057e:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.news-img-e3c2c8 {
    height: 180px;
    background: var(--bg-light);
    overflow: hidden;
}

.news-img-e3c2c8 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-content-6d7814 {
    padding: 25px;
}

.news-meta-969e7d {
    display: flex;
    gap: 15px;
    color: var(--text-light);
    font-size: 13px;
    margin-bottom: 10px;
}

.news-content-6d7814 h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--text-dark);
    line-height: 1.4;
}

.news-content-6d7814 p {
    color: var(--text-light);
    font-size: 14px;
}

/* FAQ Section */
.faq-list-69b520 {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item-282ad2 {
    background: var(--bg-white);
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question-095b7e {
    padding: 20px 25px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-dark);
}

.faq-question-095b7e:hover {
    background: var(--bg-light);
}

.faq-question-095b7e i {
    color: var(--primary-color);
    transition: transform 0.3s;
}

.faq-item-282ad2.active .faq-question-095b7e i {
    transform: rotate(180deg);
}

.faq-answer-a8e7a4 {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s;
    color: var(--text-light);
}

.faq-item-282ad2.active .faq-answer-a8e7a4 {
    padding: 0 25px 20px;
    max-height: 200px;
}

/* Reviews Section */
.reviews-grid-7e8cd3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.review-card-3d4926 {
    background: var(--bg-white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    position: relative;
}

.review-card-3d4926::before {
    content: '"';
    position: absolute;
    top: 15px;
    left: 25px;
    font-size: 60px;
    color: var(--primary-color);
    opacity: 0.2;
    font-family: serif;
}

.review-stars-84db5f {
    color: #f1c40f;
    margin-bottom: 15px;
}

.review-text-19638b {
    color: var(--text-dark);
    margin-bottom: 20px;
    font-style: italic;
    line-height: 1.7;
}

.reviewer-5e8048 {
    display: flex;
    align-items: center;
    gap: 15px;
}

.reviewer-avatar-2f421a {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.reviewer-info-90a13d h4 {
    font-size: 16px;
    color: var(--text-dark);
}

.reviewer-info-90a13d p {
    font-size: 13px;
    color: var(--text-light);
}

/* Contact Section */
.contact-wrapper-f41afe {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info-e1d4f0 h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.contact-info-e1d4f0 p {
    color: var(--text-light);
    margin-bottom: 30px;
}

.contact-item-8d7999 {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.contact-item-8d7999 i {
    width: 50px;
    height: 50px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.contact-item-text-f67fd4 h4 {
    font-size: 16px;
    color: var(--text-dark);
}

.contact-item-text-f67fd4 p {
    color: var(--text-light);
    font-size: 14px;
}

.contact-form-83e970 {
    background: var(--bg-white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.form-group-fd2f17 {
    margin-bottom: 20px;
}

.form-group-fd2f17 label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-dark);
}

.form-group-fd2f17 input,
.form-group-fd2f17 textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group-fd2f17 input:focus,
.form-group-fd2f17 textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group-fd2f17 textarea {
    height: 120px;
    resize: none;
}

.btn-submit-024453 {
    width: 100%;
    padding: 15px;
    background: var(--gradient);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.3s;
}

.btn-submit-024453:hover {
    opacity: 0.9;
}

/* Links Section */
.links-section-ab7877 {
    background: var(--text-dark);
    padding: 40px 20px;
}

.links-title-0ade0b {
    color: white;
    font-size: 18px;
    margin-bottom: 20px;
    text-align: center;
}

.links-list-e9435d {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

.links-list-e9435d a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.links-list-e9435d a:hover {
    color: white;
}

/* Footer */
.footer-7f10b5 {
    background: var(--primary-dark);
    color: white;
    padding: 60px 20px 30px;
}

.footer-content-2515a6 {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand-e399ce h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.footer-brand-e399ce p {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    line-height: 1.7;
}

.footer-links-12a091 h4 {
    font-size: 16px;
    margin-bottom: 20px;
}

.footer-links-12a091 ul {
    list-style: none;
}

.footer-links-12a091 li {
    margin-bottom: 10px;
}

.footer-links-12a091 a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-links-12a091 a:hover {
    color: white;
}

.footer-social-28ac79 {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.footer-social-28ac79 a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: background 0.3s;
}

.footer-social-28ac79 a:hover {
    background: var(--primary-light);
}

.footer-bottom-6fb95e {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255,255,255,0.5);
    font-size: 14px;
}

/* Back to Top */
.back-top-f39b6b {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    z-index: 999;
}

.back-top-f39b6b:hover {
    background: var(--primary-dark);
}

.back-top-f39b6b.show {
    display: flex;
}

/* Responsive */
@media (max-width: 992px) {
    .products-grid-46cdeb,
    .services-grid-18c8d0,
    .news-grid-9df851,
    .reviews-grid-7e8cd3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .cases-grid-dbdfb5 {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-content-dba022,
    .contact-wrapper-f41afe {
        grid-template-columns: 1fr;
    }

    .footer-content-2515a6 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .menu-toggle-637ac6 {
        display: block;
    }

    .nav-menu-f5bfae {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        box-shadow: var(--shadow);
        display: none;
    }

    .nav-menu-f5bfae.active {
        display: flex;
    }

    .hero-a1c873 h1 {
        font-size: 32px;
    }

    .hero-a1c873 p {
        font-size: 16px;
    }

    .products-grid-46cdeb,
    .services-grid-18c8d0,
    .news-grid-9df851,
    .reviews-grid-7e8cd3,
    .cases-grid-dbdfb5 {
        grid-template-columns: 1fr;
    }

    .section-title-66033b h2 {
        font-size: 28px;
    }

    .footer-content-2515a6 {
        grid-template-columns: 1fr;
    }

    .about-features-9b9100 {
        grid-template-columns: 1fr;
    }
}