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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1200px;
    width: 100%;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 80vh;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 60px 40px;
    text-align: center;
}

.logo {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: 2px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.subtitle {
    font-size: 1.3rem;
    opacity: 0.95;
    font-weight: 300;
}

main {
    flex: 1;
    padding: 60px 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.intro {
    width: 100%;
}

.content-box {
    background: #f8f9fa;
    border-radius: 15px;
    padding: 50px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.content-box h2 {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 20px;
    text-align: center;
}

.content-box > p {
    font-size: 1.2rem;
    color: #666;
    text-align: center;
    margin-bottom: 40px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.info-item {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.info-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.info-item .label {
    display: block;
    font-size: 0.9rem;
    color: #999;
    margin-bottom: 8px;
    font-weight: 500;
}

.info-item .value {
    display: block;
    font-size: 1.2rem;
    color: #333;
    font-weight: 600;
}

footer {
    background: #2c3e50;
    color: white;
    padding: 30px 40px;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.icp-info {
    font-size: 1rem;
    margin: 0;
}

.icp-link {
    color: #fff;
    text-decoration: none;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    transition: all 0.3s ease;
    display: inline-block;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.icp-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.footer-text {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

@media (max-width: 768px) {
    .logo {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 1.1rem;
    }

    header {
        padding: 40px 20px;
    }

    main {
        padding: 40px 20px;
    }

    .content-box {
        padding: 30px 20px;
    }

    .content-box h2 {
        font-size: 2rem;
    }

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

    footer {
        padding: 25px 20px;
    }
}