:root{--paper:#F4F8FF;--card:#FFF;--ink:#172033;--muted:#657086;--accent:#1479E8;--border:#DCE7F7} @media(prefers-color-scheme:dark){:root{--paper:#0E1525;--card:#172139;--ink:#F5F8FF;--muted:#A8B5CC;--accent:#62E5D0;--border:#2A3957}}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans",sans-serif;line-height:1.8;-webkit-text-size-adjust:100%}.wrap{max-width:760px;margin:auto;padding:40px 20px 80px}.eyebrow{color:var(--accent);font-size:13px;font-weight:800;letter-spacing:2px;margin:0}h1{font-size:30px;margin:4px 0}h2{font-size:20px;margin:32px 0 8px}p,li{font-size:15px}a{color:var(--accent);font-weight:700;text-decoration:none}.nav{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:24px}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:18px 20px;margin:18px 0}.muted,.updated,footer{color:var(--muted);font-size:13px}footer{margin-top:40px}