/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #e6e6e6; /* 稍微加深的背景色 */
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: #333;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #4a6cf7, #2c4bcc);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #3a5be7, #1c3baa);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 108, 247, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, #f1f1f1, #d1d1d1);
    color: #333;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #e1e1e1, #c1c1c1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(200, 200, 200, 0.4);
}

/* 头部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo img {
    height: 50px;
}

.nav-menu {
    display: flex;
}

.nav-item {
    margin-left: 30px;
}

.nav-link {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #4a6cf7;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #4a6cf7;
}

.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: all 0.3s ease;
    background-color: #333;
}

/* 英雄区域 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #e0e7ff 0%, #a5b4fc 100%); /* 加深的蓝色渐变 */
    padding-top: 80px;
}

.hero-inner {
    max-width: 600px;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    color: #2c3e50;
}

.hero p {
    font-size: 18px;
    margin-bottom: 30px;
    color: #34495e;
}

/* 通用部分标题 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
    color: #2c3e50;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(135deg, #4a6cf7, #2c4bcc);
}

.section-header p {
    font-size: 16px;
    color: #7f8c8d;
    max-width: 600px;
    margin: 0 auto;
}

/* 产品介绍 */
.products {
    padding: 100px 0;
    background: linear-gradient(135deg, #ffffff 0%, #f3f4f6 100%); /* 添加轻微渐变 */
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.product-image {
    height: 200px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.product-content {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #2c3e50;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-description {
    font-size: 14px;
    color: #7f8c8d;
    margin-bottom: 15px;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-price {
    font-size: 22px;
    font-weight: 700;
    color: #e74c3c;
    margin-bottom: 15px;
}

/* 产品特色 */
.features {
    padding: 100px 0;
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%); /* 加深的灰色渐变 */
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.feature-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    font-size: 40px;
    color: #4a6cf7;
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #2c3e50;
}

.feature-item p {
    font-size: 14px;
    color: #7f8c8d;
}

/* 新闻资讯 */
.news {
    padding: 100px 0;
    background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%); /* 添加不同的轻微渐变 */
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

.news-item {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.news-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.news-image {
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.news-content {
    padding: 20px;
}

.news-date {
    font-size: 14px;
    color: #7f8c8d;
    margin-bottom: 10px;
}

.news-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #2c3e50;
}

.news-title a:hover {
    color: #4a6cf7;
}

.news-description {
    font-size: 14px;
    color: #7f8c8d;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-link {
    font-size: 14px;
    font-weight: 600;
    color: #4a6cf7;
    display: inline-flex;
    align-items: center;
}

.news-link i {
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.news-link:hover i {
    transform: translateX(5px);
}

/* 用户评价 */
.testimonials {
    padding: 100px 0;
    background: linear-gradient(135deg, #dbeafe 0%, #93c5fd 100%); /* 不同的蓝色渐变 */
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

.testimonial-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.testimonial-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.testimonial-rating {
    font-size: 18px;
    color: #f39c12;
    margin-bottom: 15px;
}

.testimonial-text {
    font-size: 14px;
    color: #7f8c8d;
    margin-bottom: 20px;
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.testimonial-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 15px;
}

.author-info h4 {
    font-size: 16px;
    font-weight: 600;
    color: #2c3e50;
}

.author-info p {
    font-size: 14px;
    color: #7f8c8d;
}

/* 友情链接 */
.friendship-links {
    padding: 50px 0;
    background-color: #f3f4f6; /* 稍微加深的背景色 */
    border-top: 1px solid #e0e0e0;
    border-bottom: 1px solid #e0e0e0;
}

.friendship-links h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #2c3e50;
    text-align: center;
}

.links-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

.link-item {
    padding: 8px 16px;
    background-color: #e5e7eb;
    color: #7f8c8d;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.link-item:hover {
    background-color: #d1d5db;
    color: #4a6cf7;
}

/* 页脚 */
.footer {
    background-color: #1e293b; /* 稍微加深的页脚背景 */
    color: #fff;
    padding: 80px 0 30px;
}

.footer-inner {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.footer-logo img {
    height: 60px;
    margin-bottom: 20px;
}

.footer-logo p {
    font-size: 14px;
    color: #cbd5e1;
    line-height: 1.8;
}

.footer-links h4,
.footer-contact h4,
.footer-social h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h4::after,
.footer-contact h4::after,
.footer-social h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: #4a6cf7;
}

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

.footer-links ul li a {
    font-size: 14px;
    color: #cbd5e1;
    transition: all 0.3s ease;
}

.footer-links ul li a:hover {
    color: #4a6cf7;
    padding-left: 5px;
}

.footer-contact ul li {
    font-size: 14px;
    color: #cbd5e1;
    display: flex;
    align-items: center;
}

.footer-contact ul li i {
    margin-right: 10px;
    color: #4a6cf7;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 18px;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: #4a6cf7;
    transform: translateY(-5px);
}

.footer-bottom {
    text-align: center;
    font-size: 14px;
    color: #cbd5e1;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 40px;
    }

    .product-grid,
    .features-grid,
    .news-grid,
    .testimonials-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

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

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background-color: #fff;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        margin: 15px 0;
    }

    .hero {
        height: auto;
        padding: 120px 0 80px;
    }

    .hero h1 {
        font-size: 36px;
    }

    .section-header h2 {
        font-size: 30px;
    }

    .product-grid,
    .features-grid,
    .news-grid,
    .testimonials-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 30px;
    }

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

    .section-header h2 {
        font-size: 26px;
    }

    .section-header p {
        font-size: 14px;
    }

    .product-grid,
    .features-grid,
    .news-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
}