:root{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#14263c;background:#f4f7fb;font-size:17px;line-height:1.65}*{box-sizing:border-box}body{margin:0}a{color:#075fbd;text-underline-offset:3px}header{background:#074d96;color:white;padding:28px max(24px,calc((100vw - 960px)/2))}header a{color:white}nav{display:flex;gap:24px;flex-wrap:wrap}.brand{font-weight:750;font-size:1.4rem;text-decoration:none}main{max-width:960px;margin:42px auto;padding:0 24px 48px}h1{font-size:clamp(2rem,5vw,3rem);line-height:1.14;letter-spacing:-.04em;margin:0 0 18px}h2{font-size:1.35rem;line-height:1.3;margin-top:32px}.intro{font-size:1.14rem;color:#465b73;max-width:720px}.card{background:white;padding:26px 30px;border:1px solid #dbe4ef;border-radius:14px;margin:24px 0}.button{display:inline-block;padding:11px 20px;background:#075fbd;color:white;border-radius:8px;text-decoration:none;font-weight:650}.muted{color:#50647a;font-size:.9rem}details{border-top:1px solid #dbe4ef;padding:18px 0}summary{font-weight:650;cursor:pointer}footer{max-width:960px;margin:auto;padding:24px;color:#50647a;border-top:1px solid #dbe4ef}li{margin-bottom:8px}a:focus-visible,summary:focus-visible{outline:3px solid #d88000;outline-offset:5px}@media(max-width:540px){main{margin-top:28px}.card{padding:22px}nav{gap:18px}}