: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-e19628 {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header-26b15e {
    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-b320da {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo-cd511f {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.logo-cd511f i {
    margin-right: 8px;
}

.nav-menu-b34154 {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu-b34154 a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu-b34154 a:hover {
    color: var(--primary-color);
}

.menu-toggle-b17546 {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--primary-color);
}

/* Hero Section */
.hero-da8d5f {
    background: var(--gradient);
    padding: 150px 20px 100px;
    text-align: center;
    color: white;
}

.hero-da8d5f h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero-da8d5f p {
    font-size: 20px;
    max-width: 700px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

.hero-badges-4616ff {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-top: 40px;
}

.badge-item-a6cd13 {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,0.15);
    padding: 12px 25px;
    border-radius: 50px;
}

.badge-item-a6cd13 i {
    font-size: 24px;
}

/* Section Common */
.section-1214b5 {
    padding: 80px 20px;
}

.section-alt-b8d492 {
    background: var(--bg-light);
}

.section-title-3260e4 {
    text-align: center;
    margin-bottom: 20px;
}

.section-title-3260e4 h2 {
    font-size: 36px;
    color: var(--text-dark);
    position: relative;
    display: inline-block;
}

.section-title-3260e4 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-6a35c7 {
    text-align: center;
    color: var(--text-light);
    max-width: 700px;
    margin: 30px auto 50px;
    font-size: 16px;
}

/* Products Section */
.products-grid-9ff31c {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card-f72db4 {
    background: var(--bg-white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.product-card-f72db4:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.product-img-814a76 {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    position: relative;
    overflow: hidden;
}

.product-img-814a76 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-content-422d3f {
    padding: 25px;
}

.product-content-422d3f h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.product-content-422d3f p {
    color: var(--text-light);
    font-size: 14px;
}

/* Services Section */
.services-grid-8fc6f6 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card-b8594b {
    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-b8594b:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.service-icon-8e4c39 {
    width: 80px;
    height: 80px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.service-icon-8e4c39 i {
    font-size: 32px;
    color: white;
}

.service-card-b8594b h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.service-card-b8594b p {
    color: var(--text-light);
    font-size: 14px;
}

/* About Section */
.about-content-4684c4 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text-d4b3d5 h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.about-text-d4b3d5 p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-features-ed26f5 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 30px;
}

.about-feature-6f0567 {
    display: flex;
    align-items: center;
    gap: 10px;
}

.about-feature-6f0567 i {
    color: var(--accent-color);
    font-size: 20px;
}

.about-img-adfcc6 {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.about-img-adfcc6 img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

/* Cases Section */
.cases-grid-d78bf5 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.case-card-4c3968 {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    height: 250px;
    cursor: pointer;
}

.case-card-4c3968 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.case-card-4c3968:hover img {
    transform: scale(1.1);
}

.case-overlay-d92042 {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    padding: 20px;
    color: white;
}

.case-overlay-d92042 h4 {
    font-size: 16px;
}

/* News Section */
.news-grid-9f4afd {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card-9c846d {
    background: var(--bg-white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.news-card-9c846d:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.news-img-f83c4b {
    height: 180px;
    background: var(--bg-light);
    overflow: hidden;
}

.news-img-f83c4b img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-content-f46d3a {
    padding: 25px;
}

.news-meta-6ef5ae {
    display: flex;
    gap: 15px;
    color: var(--text-light);
    font-size: 13px;
    margin-bottom: 10px;
}

.news-content-f46d3a h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--text-dark);
    line-height: 1.4;
}

.news-content-f46d3a p {
    color: var(--text-light);
    font-size: 14px;
}

/* FAQ Section */
.faq-list-ddc1df {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item-b968b3 {
    background: var(--bg-white);
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question-d52d9b {
    padding: 20px 25px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-dark);
}

.faq-question-d52d9b:hover {
    background: var(--bg-light);
}

.faq-question-d52d9b i {
    color: var(--primary-color);
    transition: transform 0.3s;
}

.faq-item-b968b3.active .faq-question-d52d9b i {
    transform: rotate(180deg);
}

.faq-answer-79124e {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s;
    color: var(--text-light);
}

.faq-item-b968b3.active .faq-answer-79124e {
    padding: 0 25px 20px;
    max-height: 200px;
}

/* Reviews Section */
.reviews-grid-69f3cf {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.review-card-f05c81 {
    background: var(--bg-white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    position: relative;
}

.review-card-f05c81::before {
    content: '"';
    position: absolute;
    top: 15px;
    left: 25px;
    font-size: 60px;
    color: var(--primary-color);
    opacity: 0.2;
    font-family: serif;
}

.review-stars-edebd6 {
    color: #f1c40f;
    margin-bottom: 15px;
}

.review-text-3a3a8d {
    color: var(--text-dark);
    margin-bottom: 20px;
    font-style: italic;
    line-height: 1.7;
}

.reviewer-e81bc8 {
    display: flex;
    align-items: center;
    gap: 15px;
}

.reviewer-avatar-b0367d {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.reviewer-info-683265 h4 {
    font-size: 16px;
    color: var(--text-dark);
}

.reviewer-info-683265 p {
    font-size: 13px;
    color: var(--text-light);
}

/* Contact Section */
.contact-wrapper-637867 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info-7ac037 h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.contact-info-7ac037 p {
    color: var(--text-light);
    margin-bottom: 30px;
}

.contact-item-52e2e8 {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.contact-item-52e2e8 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-873201 h4 {
    font-size: 16px;
    color: var(--text-dark);
}

.contact-item-text-873201 p {
    color: var(--text-light);
    font-size: 14px;
}

.contact-form-93ebe9 {
    background: var(--bg-white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.form-group-8f7b22 {
    margin-bottom: 20px;
}

.form-group-8f7b22 label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-dark);
}

.form-group-8f7b22 input,
.form-group-8f7b22 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-8f7b22 input:focus,
.form-group-8f7b22 textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group-8f7b22 textarea {
    height: 120px;
    resize: none;
}

.btn-submit-dcb12f {
    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-dcb12f:hover {
    opacity: 0.9;
}

/* Links Section */
.links-section-e06ebf {
    background: var(--text-dark);
    padding: 40px 20px;
}

.links-title-573a79 {
    color: white;
    font-size: 18px;
    margin-bottom: 20px;
    text-align: center;
}

.links-list-625ff4 {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

.links-list-625ff4 a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.links-list-625ff4 a:hover {
    color: white;
}

/* Footer */
.footer-d32fe3 {
    background: var(--primary-dark);
    color: white;
    padding: 60px 20px 30px;
}

.footer-content-d7f562 {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand-ce0177 h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.footer-brand-ce0177 p {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    line-height: 1.7;
}

.footer-links-795655 h4 {
    font-size: 16px;
    margin-bottom: 20px;
}

.footer-links-795655 ul {
    list-style: none;
}

.footer-links-795655 li {
    margin-bottom: 10px;
}

.footer-links-795655 a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-links-795655 a:hover {
    color: white;
}

.footer-social-4aa5ee {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.footer-social-4aa5ee 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-4aa5ee a:hover {
    background: var(--primary-light);
}

.footer-bottom-a03d46 {
    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-e84325 {
    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-e84325:hover {
    background: var(--primary-dark);
}

.back-top-e84325.show {
    display: flex;
}

/* Responsive */
@media (max-width: 992px) {
    .products-grid-9ff31c,
    .services-grid-8fc6f6,
    .news-grid-9f4afd,
    .reviews-grid-69f3cf {
        grid-template-columns: repeat(2, 1fr);
    }

    .cases-grid-d78bf5 {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-content-4684c4,
    .contact-wrapper-637867 {
        grid-template-columns: 1fr;
    }

    .footer-content-d7f562 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .menu-toggle-b17546 {
        display: block;
    }

    .nav-menu-b34154 {
        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-b34154.active {
        display: flex;
    }

    .hero-da8d5f h1 {
        font-size: 32px;
    }

    .hero-da8d5f p {
        font-size: 16px;
    }

    .products-grid-9ff31c,
    .services-grid-8fc6f6,
    .news-grid-9f4afd,
    .reviews-grid-69f3cf,
    .cases-grid-d78bf5 {
        grid-template-columns: 1fr;
    }

    .section-title-3260e4 h2 {
        font-size: 28px;
    }

    .footer-content-d7f562 {
        grid-template-columns: 1fr;
    }

    .about-features-ed26f5 {
        grid-template-columns: 1fr;
    }
}