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

:root {
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #6b7280;
    --color-accent: #5b9fd8;
    --color-background: #ffffff;
    --color-border: #e5e7eb;
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text-primary);
    background-color: var(--color-background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px;
}

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 80px 24px;
}

.logo {
    font-size: 48px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
    color: var(--color-text-primary);
}

.tagline {
    font-size: 28px;
    font-weight: 500;
    margin-bottom: 32px;
    color: var(--color-text-primary);
}

.description {
    font-size: 18px;
    color: var(--color-text-secondary);
    max-width: 600px;
    line-height: 1.7;
    margin-bottom: 80px;
}

.footer {
    padding: 40px 24px;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--color-accent);
}

.footer-links .separator {
    color: var(--color-border);
}

.page-header {
    padding: 80px 24px 40px;
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.page-title {
    font-size: 36px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    color: var(--color-text-primary);
}

.page-subtitle {
    font-size: 16px;
    color: var(--color-text-secondary);
}

.page-content {
    padding: 60px 24px 80px;
}

.content-section {
    margin-bottom: 48px;
}

.section-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-text-primary);
}

.section-content {
    font-size: 16px;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.placeholder {
    background-color: #f9fafb;
    border: 1px dashed var(--color-border);
    border-radius: 8px;
    padding: 32px;
    text-align: center;
    color: var(--color-text-secondary);
    font-style: italic;
}

.back-link {
    display: inline-block;
    color: var(--color-accent);
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 24px;
    transition: opacity 0.2s ease;
}

.back-link:hover {
    opacity: 0.7;
}

@media (max-width: 640px) {
    .logo {
        font-size: 36px;
    }
    
    .tagline {
        font-size: 24px;
    }
    
    .description {
        font-size: 16px;
    }
    
    .page-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 20px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 12px;
    }
    
    .footer-links .separator {
        display: none;
    }
}