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

body {
    background: #fafafa;
    color: #666;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-weight: 300;
    font-size: 15px;
    line-height: 1.8;
    padding: 80px 40px;
    min-height: 100vh;
}

.container {
    max-width: 600px;
    margin: 0 auto;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 6px;
}

h1 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #1a1a1a;
    letter-spacing: -0.5px;
}

.lang-switch {
    display: flex;
    gap: 12px;
    font-size: 0.85rem;
    font-weight: 400;
}

.lang-switch a {
    color: #0094cc;
    text-decoration: none;
    transition: color 0.2s;
}

.lang-switch a:hover {
    color: #006b94;
}

.lang-switch .current {
    color: #1a1a1a;
}

.subtitle {
    color: #999;
    font-size: 0.95rem;
    margin-bottom: 50px;
}

hr {
    border: none;
    border-top: 1px solid #e8e8e8;
    margin: 40px 0;
}

.intro p {
    margin-bottom: 16px;
}

.intro .highlight {
    color: #1a1a1a;
    font-weight: 400;
}

.muted {
    color: #bbb;
}

h2 {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: #0094cc;
    margin-bottom: 20px;
}

.project {
    margin-bottom: 24px;
}

.project-title {
    font-weight: 600;
    color: #333;
    margin-bottom: 4px;
}

.project-title:hover {
    color: #0094cc;
    cursor: pointer;
}

.project-desc {
    color: #888;
    font-size: 0.9rem;
}

.principles p {
    color: #777;
    margin-bottom: 8px;
    padding-left: 12px;
    border-left: 2px solid #e0e0e0;
    transition: border-color 0.3s;
}

.principles p:hover {
    border-left-color: #0094cc;
}

@media (max-width: 600px) {
    body {
        padding: 50px 24px;
    }
}