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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* 头部样式 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 15px 0;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

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

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

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

.nav a:hover {
    color: #ff6b6b;
}

/* 英雄区域样式 */
.hero {
    background-color: #fff;
    padding: 120px 0 80px;
    margin-top: 80px;
}

.hero .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.hero-content {
    flex: 1;
    min-width: 300px;
    margin-right: 40px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 10px;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #666;
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
    max-width: 600px;
}

.hero-qr {
    text-align: center;
    flex: 0 0 200px;
}

.hero-qr img {
    width: 180px;
    height: 180px;
    margin-bottom: 10px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.hero-qr p {
    color: #666;
    font-size: 0.9rem;
}

/* 通用区块样式 */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: #ff6b6b;
    border-radius: 2px;
}

/* 关于我们样式 */
.about {
    background-color: #f8f9fa;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
}

.about-content p {
    margin-bottom: 20px;
}

/* 功能介绍样式 */
.features {
    background-color: #fff;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-item {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #ff6b6b;
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.feature-item p {
    color: #666;
    line-height: 1.6;
}

/* 联系我们样式 */
.contact {
    background-color: #f8f9fa;
}

.contact-content {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 50px;
}

.contact-info {
    font-size: 1.1rem;
    color: #666;
}

.contact-info p {
    margin-bottom: 15px;
}

.contact-info strong {
    color: #333;
}

.contact-qr {
    text-align: center;
}

.contact-qr img {
    width: 200px;
    height: 200px;
    margin-bottom: 10px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.contact-qr p {
    color: #666;
    font-size: 0.9rem;
}

/* 页脚样式 */
.footer {
    background-color: #333;
    color: #fff;
    padding: 30px 0;
    text-align: center;
}

.footer p {
    font-size: 0.9rem;
    opacity: 0.8;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
    }

    .nav ul {
        gap: 20px;
    }

    .nav li {
        margin-left: 0;
    }

    .hero .container {
        flex-direction: column;
        text-align: center;
    }

    .hero-content {
        margin-right: 0;
        margin-bottom: 40px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

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

    .contact-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

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

    .hero-qr img,
    .contact-qr img {
        width: 150px;
        height: 150px;
    }
}