*, *::before, *::after { box-sizing: border-box; }
body { background: #fff; color: #1a1a1a; font-family: system-ui, -apple-system, sans-serif; margin: 0; padding: 0 16px; }
header, main, footer { max-width: 720px; margin: 0 auto; }
header { padding: 48px 0 24px; border-bottom: 1px solid #eee; }
header h1 { font-size: 1.2rem; font-weight: 600; margin: 0; }
header p { margin: 12px 0 0; color: #555; font-size: 0.95rem; line-height: 1.6; }
main { padding: 32px 0; }
article { display: flex; gap: 16px; align-items: flex-start; }
article img { width: 64px; height: 64px; border-radius: 14px; flex-shrink: 0; }
article .content h3 { margin: 0 0 8px; font-size: 1.1rem; }
article .content p { margin: 0 0 16px; color: #555; line-height: 1.6; }
article .content a { display: inline-block; background: #1a73e8; color: #fff; padding: 8px 20px; border-radius: 6px; text-decoration: none; font-size: 0.9rem; }
footer { padding: 24px 0; border-top: 1px solid #eee; }
main small a, footer nav a { margin-right: 16px; text-decoration: none; color: #555; font-size: 0.9rem; }
footer small { display: block; margin-top: 8px; color: #999; font-size: 0.8rem; }