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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    min-height: 100vh;
    padding: 2rem 1rem;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.profile-header {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 3rem 2rem;
    text-align: center;
}

.avatar {
    margin-bottom: 1.5rem;
}

.avatar-placeholder {
    width: 120px;
    height: 120px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: bold;
    border: 4px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.profile-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.tagline {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 300;
}

main {
    padding: 3rem 2rem;
}

section {
    margin-bottom: 3rem;
}

section:last-child {
    margin-bottom: 0;
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #2a5298;
    border-bottom: 3px solid #2a5298;
    padding-bottom: 0.5rem;
}

p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: #555;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.tag {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 500;
    box-shadow: 0 4px 10px rgba(30, 60, 114, 0.3);
    transition: transform 0.2s, box-shadow 0.2s;
}

.tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(30, 60, 114, 0.4);
}

.contact-info {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.contact-link {
    display: inline-block;
    background: #2a5298;
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: background 0.3s, transform 0.2s;
    box-shadow: 0 4px 10px rgba(30, 60, 114, 0.3);
}

.contact-link:hover {
    background: #1e3c72;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(30, 60, 114, 0.4);
}

footer {
    background: #f8f9fa;
    padding: 1.5rem;
    text-align: center;
    color: #666;
    font-size: 0.9rem;
    border-top: 1px solid #e9ecef;
}

@media (max-width: 600px) {
    body {
        padding: 1rem 0.5rem;
    }
    
    .profile-header {
        padding: 2rem 1rem;
    }
    
    .profile-header h1 {
        font-size: 2rem;
    }
    
    main {
        padding: 2rem 1rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
}