*{box-sizing:border-box}html,body{height:100%}body{color:#111;background:#f6f6f6;margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.site-header{z-index:10;background:#fff;border-bottom:1px solid #eee;position:sticky;top:0}.nav{justify-content:space-between;align-items:center;max-width:980px;margin:0 auto;padding:12px 16px;display:flex}.nav .brand{color:#111;font-weight:700;text-decoration:none}.nav .links{gap:12px;display:flex}.nav .links a{color:#444;text-decoration:none}.nav .links a:hover{color:#000}.site-main{min-height:calc(100vh - 120px);padding:24px 16px}.site-footer{text-align:center;color:#666;padding:20px}.container{max-width:980px;margin:0 auto}.grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;display:grid}.card{background:#fff;border:1px solid #eee;border-radius:14px;padding:16px;box-shadow:0 1px 4px #0000000a}.button{color:#111;background:#fff;border:1px solid #ddd;border-radius:10px;padding:10px 14px;text-decoration:none;display:inline-block}.button:hover{background:#f2f2f2}.muted{color:#666;font-size:14px}.hero{margin:8px 0 20px}