:root { --color-primary: #FF7043; --color-primary-dark: #E64A19; --color-text: #333; }
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: #f9f9f9; color: var(--color-text); }
nav { background: white; border-bottom: 1px solid #eee; padding: 0 24px; height: 64px; display: flex; align-items: center; }
nav .nav-inner { max-width: 800px; margin: 0 auto; width: 100%; display: flex; align-items: center; justify-content: space-between; }
nav .logo { font-size: 1.25rem; font-weight: 700; color: var(--color-text); text-decoration: none; }
nav .logo span { color: var(--color-primary); }
nav .back { font-size: .9rem; color: var(--color-primary); text-decoration: none; }
nav .back:hover { text-decoration: underline; }
.content { max-width: 800px; margin: 0 auto; padding: 48px 24px 160px; }
h1 { font-size: 1.8rem; font-weight: 700; margin-bottom: 32px; color: var(--color-text); }
h2 { font-size: 1.1rem; font-weight: 700; margin-top: 28px; margin-bottom: 12px; }
p, li { font-size: .95rem; line-height: 1.7; color: #444; }
ol, ul { margin-left: 20px; margin-bottom: 8px; }
li { margin-bottom: 6px; }
a { color: var(--color-primary); }