:root {
    --primary-color: #2B3AED;
    --gradient-bg: linear-gradient(135deg, #4B0082, #2B3AED);
    --text-light: #ffffff;
    --text-dark: #333333;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

header {
    background: var(--gradient-bg);
    padding: 1rem 5%;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 1rem;
}

.login-btn a {
    padding: 0.5rem 1.5rem;
    border: 1px solid var(--text-light);
    border-radius: 20px;
}

.hero {
    background: var(--gradient-bg);
    min-height: 60vh;
    display: flex;
    padding: 0 5%;
    color: var(--text-light);
    position: relative;
    overflow: hidden;
}

.hero-content {
    flex: 1;
    padding: 3rem 0;
    position: relative;
    z-index: 2;
}

.hero-image {
    position: absolute;
    right: -5%;
    top: 50%;
    transform: translateY(-50%);
    width: 50%;
    height: 90%;
    background-image: url('images/hero-3d.png');
    background-size: cover;
    background-position: center;
    opacity: 0.8;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.hero h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    opacity: 0.8;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 600px;
}

.cta-button {
    padding: 1rem 3rem;
    font-size: 1.2rem;
    border: none;
    border-radius: 30px;
    background: white;
    color: var(--primary-color);
    cursor: pointer;
    transition: transform 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(43, 58, 237, 0.3);
}

.features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    padding: 5rem 5%;
    background: #f8f9fa;
}

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

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

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

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

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

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--text-dark);
    opacity: 0.8;
}

.footer-bottom{
    text-align: center;
}

@media (max-width: 768px) {
    .features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero {
        flex-direction: column;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero h2 {
        font-size: 1.5rem;
    }
    
    .hero-image {
        position: relative;
        width: 100%;
        height: 200px;
        right: 0;
        top: 0;
        transform: none;
    }
}

@media (max-width: 480px) {
    .features {
        grid-template-columns: 1fr;
    }
}

.logo {
    height: 40px;
    display: flex;
    align-items: center;
}

.logo img {
    max-height: 48px;
    width: auto;
}

@media (max-width: 768px) {
    .logo {
        height: 30px;
    }
}


/* 关于我们页面样式 */
.about-hero {
    background: var(--gradient-bg);
    padding: 4rem 5%;
    color: var(--text-light);
    text-align: center;
    min-height: 40vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.about-hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.about-hero h2 {
    font-size: 1.5rem;
    opacity: 0.8;
}

.company-intro {
    padding: 4rem 5%;
    background: #ffffff;
}

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

.company-intro h2 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

.intro-content {
    line-height: 1.8;
}

.intro-content p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: var(--text-dark);
}

.services {
    padding: 4rem 5%;
    background: #f8f9fa;
}

.services h2 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.service-item {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.service-item:hover {
    transform: translateY(-5px);
}

.service-item i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.service-item span {
    color: var(--text-dark);
    font-size: 1rem;
}

@media (max-width: 768px) {
    .about-hero h1 {
        font-size: 2rem;
    }
    
    .about-hero h2 {
        font-size: 1.2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .intro-content p {
        font-size: 1rem;
    }
}