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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fafafa;
    padding: 20px;
}

.container {
    max-width: 720px;
    margin: 0 auto;
    background: white;
    padding: 60px 40px;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

header {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid #e5e5e5;
}

h1 {
    font-size: 2em;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.subtitle {
    font-size: 1.1em;
    color: #666;
    font-weight: 400;
}

section {
    margin-bottom: 50px;
}

.intro {
    font-size: 1.05em;
    color: #555;
    line-height: 1.7;
}

h2 {
    font-size: 1.4em;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 24px;
}

.links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.links a {
    color: #0969da;
    text-decoration: none;
    font-size: 0.95em;
    padding: 8px 16px;
    border: 1px solid #d0d7de;
    border-radius: 6px;
    transition: background-color 0.15s ease;
}

.links a:hover {
    background-color: #f6f8fa;
    border-color: #0969da;
}

.project {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #f0f0f0;
}

.project:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.project h3 {
    font-size: 1.1em;
    font-weight: 600;
    margin-bottom: 8px;
}

.project h3 a {
    color: #1a1a1a;
    text-decoration: none;
    transition: color 0.15s ease;
}

.project h3 a:hover {
    color: #0969da;
}

.project p {
    color: #666;
    font-size: 0.95em;
    line-height: 1.5;
}

.tech-list {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.tech-list span {
    background: #f6f8fa;
    color: #555;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.9em;
    border: 1px solid #e5e5e5;
}

footer {
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid #e5e5e5;
    text-align: center;
    color: #888;
    font-size: 0.9em;
}

@media (max-width: 640px) {
    .container {
        padding: 40px 25px;
    }
    
    h1 {
        font-size: 1.6em;
    }
    
    .links {
        flex-direction: column;
        gap: 12px;
    }
    
    .links a {
        text-align: center;
    }
}