:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}body{margin:0;background:#fafafa;color:#111}a{color:inherit}.container{max-width:980px;margin:0 auto;padding:20px}.card{background:#fff;border:1px solid #eee;border-radius:12px;padding:16px}.row{display:flex;gap:12px;flex-wrap:wrap}.btn{border:1px solid #ddd;background:#fff;padding:10px 12px;border-radius:10px;cursor:pointer}.btn.primary{background:#111;color:#fff;border-color:#111}.input{width:100%;padding:10px 12px;border:1px solid #ddd;border-radius:10px}label{font-size:13px;color:#333;display:block;margin:10px 0 6px}nav{position:sticky;top:0;background:#fff;border-bottom:1px solid #eee}.nav-inner{display:flex;justify-content:space-between;align-items:center;padding:12px 20px;max-width:980px;margin:0 auto}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}.small{font-size:13px;color:#555}