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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.logo-img {
    height: 50px;
    width: auto;
}

.nav-links a {
    color: #333;
    text-decoration: none;
    margin-left: 2rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: #0066cc;
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 英雄区域样式 */
.hero {
    height: 100vh;
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.hero-content {
    max-width: 800px;
    padding: 0 2rem;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
}

.hero-content h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards 0.3s;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards 0.6s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: #0066cc;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.cta-button:hover {
    background-color: #0052a3;
}

/* 特性区域样式 */
.features {
    padding: 5rem 0;
    background-color: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-item {
    text-align: center;
    padding: 2rem;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-10px);
}

.feature-item i {
    font-size: 2.5rem;
    color: #0066cc;
    margin-bottom: 1rem;
}

.feature-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* 页脚样式 */
footer {
    background-color: #2d3846;
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-info h3,
.footer-contact h3,
.footer-social h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
    color: #fff;
}

.footer-contact p {
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer-contact i {
    margin-right: 0.5rem;
}

.social-links a {
    color: white;
    font-size: 1.5rem;
    margin-right: 1rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: #0066cc;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.5rem;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.footer-bottom a:hover {
    color: #fff;
}

/* 备案信息样式 */
.beian-info {
    text-align: center;
    margin-top: 1rem;
}

.beian-info a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    margin: 0 10px;
}

.beian-info a:hover {
    color: #fff;
}

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

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: white;
        padding: 1rem 0;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .nav-links a {
        margin: 0.5rem 0;
    }

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

    .hero-content h2 {
        font-size: 1.5rem;
    }
}