body{margin:0;background:#0b0c10;color:#f4f5f7;font:17px/1.6 system-ui,sans-serif}main{max-width:920px;margin:auto;padding:64px 24px}a{color:#76d7ff}nav{display:flex;gap:18px;flex-wrap:wrap}.brand{font-weight:800;letter-spacing:.08em;color:#70e1b2}.card{background:#151820;border:1px solid #2b3442;border-radius:18px;padding:24px;margin:20px 0}h1{font-size:clamp(2.1rem,6vw,4rem);line-height:1.05}code{background:#242936;padding:.15em .35em;border-radius:5px}.cta{display:inline-block;padding:10px 16px;border:1px solid #76d7ff;border-radius:10px;text-decoration:none}@media(max-width:520px){main{padding:36px 18px}}