body{font-family:system-ui,Arial,sans-serif;line-height:1.7;color:#222;max-width:900px;margin:0 auto;padding:24px;background:#f7f9fc}header{background:#0b3d5f;color:#fff;padding:28px;border-radius:12px}h1{line-height:1.3}h2{color:#0b3d5f;margin-top:32px}img{width:100%;height:auto;border-radius:12px;margin:16px 0}a{color:#0b6fa5}main{background:#fff;padding:28px;border-radius:12px}footer{color:#666;text-align:center;margin-top:20px}