body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#10234a;line-height:1.6}header{background:#eaf3ff;padding:18px}nav,main{max-width:900px;margin:auto}nav{display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}.brand{font-weight:800;letter-spacing:.12em}a{color:#2768e8}nav a{margin-left:12px;text-decoration:none;color:#10234a}main{padding:48px 22px}.hero{text-align:center;padding:45px 0}.hero h1{font-size:3.5rem;margin:0}.tag{font-size:1.35rem}.btn{display:inline-block;background:#2768e8;color:white;padding:12px 20px;border-radius:999px;text-decoration:none;font-weight:700}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin:28px 0}.card,.note{background:#f7fbff;border:1px solid #dbe8f7;border-radius:20px;padding:22px}.note{background:#eaf3ff}footer{border-top:1px solid #dbe8f7;padding:28px;text-align:center}footer a{margin:0 7px}