body{font-family:system-ui,-apple-system,Segoe UI,Arial,sans-serif;max-width:1050px;margin:auto;padding:24px;line-height:1.6;color:#202124}header{border-bottom:1px solid #ddd;margin-bottom:28px}nav{display:flex;flex-wrap:wrap;gap:8px 16px;margin-bottom:14px}nav a{white-space:nowrap}h1,h2,h3,h4{line-height:1.2}h2{margin-top:2.2rem}h3{margin-top:1.6rem}.formula{background:#f6f8fa;padding:10px 14px;border-left:4px solid #555;font-family:ui-monospace,monospace;overflow-wrap:anywhere}.note{background:#fff8dc;padding:12px;border:1px solid #eadca6}.card{border:1px solid #ddd;border-radius:10px;padding:16px;margin:12px 0}.document{margin-top:28px}.doc-title{font-size:1.3rem;font-weight:700;margin:1.5rem 0}.table-wrap{overflow-x:auto;margin:20px 0}table{border-collapse:collapse;width:100%}th,td{border:1px solid #ddd;padding:8px;vertical-align:top}th{background:#f6f8fa;text-align:left}footer{margin-top:40px;border-top:1px solid #ddd;padding-top:15px;color:#666}@media(max-width:600px){body{padding:16px}h1{font-size:1.65rem}h2{font-size:1.3rem}}