/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    overflow-x: hidden;
}

body {
    color: #333;
    line-height: 1.6;
}

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

/* 按钮样式 */
.btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background-color: #e63946;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background-color: #c1121f;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    display: inline-block;
    padding: 12px 30px;
    background-color: transparent;
    color: #e63946;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid #e63946;
    margin-left: 15px;
}

.btn-secondary:hover {
    background-color: #e63946;
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* 头部样式 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

.logo {
    float: left;
}

.logo img {
    height: 60px;
}

.nav {
    float: right;
}

.nav-menu {
    display: flex;
    list-style: none;
}

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

.nav-link {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #e63946;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #e63946;
}

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

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

/* 英雄区域样式 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 20px;
    color: #fff;
}

.hero-content {
    max-width: 800px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

/* 通用部分样式 */
section {
    padding: 120px 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 20px;
    color: #212529;
}

.section-description {
    font-size: 1.1rem;
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
    color: #6c757d;
}

/* 产品部分样式 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    align-items: start;
}

.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 {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.3s ease;
    display: block;
}

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

.product-title {
    font-size: 1.2rem;
    margin: 20px 20px 10px;
    color: #212529;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-description {
    font-size: 0.95rem;
    color: #6c757d;
    margin: 0 20px 20px;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-price {
    font-size: 1.3rem;
    font-weight: 600;
    color: #e63946;
    margin: 0 20px 20px;
}

.product-btn {
    margin: 0 20px 20px;
    text-align: center;
}

/* 产品特色部分样式 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background-color: rgba(230, 57, 70, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: #e63946;
    font-size: 2.5rem;
}

.feature-title {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #212529;
}

.feature-description {
    font-size: 0.95rem;
    color: #6c757d;
}

/* 新闻资讯部分样式 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.news-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%;
}

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

.news-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.3s ease;
    display: block;
}

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

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

.news-date {
    font-size: 0.85rem;
    color: #6c757d;
    margin-bottom: 10px;
    display: inline-block;
    background-color: #f8f9fa;
    padding: 3px 10px;
    border-radius: 4px;
}

.news-title {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #212529;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-description {
    font-size: 0.95rem;
    color: #6c757d;
    margin-bottom: 20px;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-link {
    font-size: 0.95rem;
    color: #e63946;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
}

.news-link:hover {
    color: #c1121f;
}

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

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

/* 用户评价部分样式 */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

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

.testimonial-rating {
    color: #ffc107;
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.testimonial-text {
    font-size: 1rem;
    color: #333;
    margin-bottom: 25px;
    font-style: italic;
}

.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: 1.1rem;
    color: #212529;
    margin-bottom: 5px;
}

.author-info p {
    font-size: 0.9rem;
    color: #6c757d;
}

/* 友情链接部分样式 */
.friend-links {
    padding: 80px 0;
}

.links-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.links-container a {
    color: #333;
    text-decoration: none;
    font-size: 1rem;
    padding: 8px 16px;
    background-color: #fff;
    border-radius: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.links-container a:hover {
    color: #e63946;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 联系我们部分样式 */
.contact-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-details {
    padding: 20px;
}

.contact-item {
    display: flex;
    margin-bottom: 30px;
}

.contact-item i {
    font-size: 1.5rem;
    color: #e63946;
    margin-right: 20px;
    width: 30px;
    text-align: center;
}

.contact-text h4 {
    font-size: 1.1rem;
    color: #212529;
    margin-bottom: 10px;
}

.contact-text p {
    font-size: 1rem;
    color: #6c757d;
}

.contact-form {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: #212529;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ced4da;
    border-radius: 5px;
    font-size: 1rem;
    color: #495057;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #e63946;
}

/* 页脚样式 */
.footer {
    background-color: #212529;
    color: #fff;
    padding: 80px 0 20px;
}

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

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

.footer-logo p {
    color: #adb5bd;
    margin-bottom: 20px;
}

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

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background-color: #e63946;
    transform: translateY(-3px);
}

.footer-links h4,
.footer-friendlinks h4,
.footer-contact h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h4::after,
.footer-friendlinks h4::after,
.footer-contact h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: #e63946;
}

.footer-links ul,
.footer-friendlinks ul,
.footer-contact ul {
    list-style: none;
}

.footer-links li,
.footer-friendlinks li,
.footer-contact li {
    margin-bottom: 15px;
}

.footer-links a,
.footer-friendlinks a {
    color: #adb5bd;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-links a:hover,
.footer-friendlinks a:hover {
    color: #e63946;
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    align-items: center;
    color: #adb5bd;
}

.footer-contact li i {
    margin-right: 15px;
    color: #e63946;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #adb5bd;
}

/* 背景色样式 */
.bg-gradient-1 {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
}

.bg-gradient-2 {
    background: linear-gradient(135deg, #047857 0%, #10b981 100%);
}

.bg-gradient-3 {
    background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%);
}

.bg-white {
    background-color: #ffffff;
}

.bg-light-gray {
    background-color: #f8f9fa;
}

.bg-dark {
    background-color: #212529;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content h1 {
        font-size: 2.8rem;
    }

    .contact-info {
        grid-template-columns: 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: 90px;
        flex-direction: column;
        background-color: #fff;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    }

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

    .nav-item {
        margin: 16px 0;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .btn-primary,
    .btn-secondary {
        padding: 10px 20px;
        font-size: 14px;
        margin: 5px;
    }

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

    section {
        padding: 80px 0;
    }
}

@media (max-width: 576px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

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

    .friend-links {
        padding: 60px 0;
    }
}