*{box-sizing:border-box}body{margin:0;background:#f5f7fb;color:#17243b;font:18px/1.7 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}header,main,footer{width:min(100% - 40px,820px);margin:auto}header{padding:28px 0;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}header>a{font-weight:800;text-decoration:none}nav{display:flex;gap:20px;flex-wrap:wrap}main{background:white;border:1px solid #dce3ee;border-radius:20px;padding:clamp(22px,5vw,48px)}h1{font-size:clamp(30px,5vw,44px);line-height:1.15;margin-top:0;letter-spacing:-.03em}h2{font-size:24px;line-height:1.3;margin-top:32px}a{color:#124da4;text-underline-offset:3px;overflow-wrap:anywhere}a:focus-visible{outline:3px solid #1769e8;outline-offset:4px}li{margin-bottom:10px}ul,ol{padding-left:25px}.promise{background:#edf4ff;border-left:4px solid #1769e8;padding:18px;font-weight:700}.updated,footer{font-size:15px;color:#53647d}footer{padding:24px 0 40px}@media(prefers-color-scheme:dark){body{background:#0b1423;color:#eef3fc}main{background:#111e31;border-color:#334760}a{color:#9cc4ff}.promise{background:#172d4b}.updated,footer{color:#b3c1d5}}