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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

/* 页面头部 */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo h1 {
    color: #f0741e;
    font-size: 24px;
    font-weight: 600;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav a {
    color: #666;
    font-size: 16px;
    font-weight: 500;
}

.nav a:hover {
    color: #f0741e;
}

/* 主视觉区 */
.hero {
    background: linear-gradient(135deg, #f0741e 0%, #ff9966 100%);
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 50px;
    opacity: 0.95;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.hero-feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.hero-feature-item .icon {
    font-size: 48px;
}

.hero-feature-item span:last-child {
    font-size: 16px;
    font-weight: 500;
}

/* 功能介绍 */
.features {
    padding: 80px 0;
    background: #f8f9fa;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #333;
    font-weight: 700;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #333;
}

.feature-card p {
    color: #666;
    line-height: 1.8;
    font-size: 15px;
}

/* 关于我们 */
.about {
    padding: 80px 0;
    background: #fff;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: #333;
}

.about-text p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 20px;
}

.about-stats {
    display: flex;
    justify-content: space-around;
    margin-top: 50px;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 12px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 42px;
    font-weight: 700;
    color: #f0741e;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    color: #666;
}

/* 联系方式 */
.contact {
    padding: 80px 0;
    background: #f8f9fa;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.contact-item {
    text-align: center;
    padding: 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.contact-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.contact-item h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #333;
}

.contact-item p {
    color: #666;
    font-size: 16px;
}

/* 页面底部 */
.footer {
    background: #333;
    color: #fff;
    padding: 40px 0;
    text-align: center;
}

.footer-content p {
    margin-bottom: 10px;
    font-size: 14px;
    opacity: 0.9;
}

.footer-links {
    margin: 20px 0;
}

.footer-links a {
    color: #fff;
    margin: 0 10px;
    opacity: 0.8;
}

.footer-links a:hover {
    opacity: 1;
    color: #f0741e;
}

.footer-links span {
    margin: 0 5px;
    opacity: 0.5;
}

.icp-info {
    margin-top: 20px;
    opacity: 0.7;
    font-size: 13px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 20px;
    }

    .nav {
        gap: 20px;
    }

    .hero-content h2 {
        font-size: 32px;
    }

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

    .hero-features {
        gap: 20px;
    }

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

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

    .about-stats {
        flex-direction: column;
        gap: 30px;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }
}