:root{color-scheme:light;font-family:system-ui,sans-serif;color:#182740;background:#f5f7fc}*{box-sizing:border-box}body{margin:0;line-height:1.6}header,main,footer{width:min(900px,100%);margin:auto;padding:24px}header{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.brand{font-weight:800;font-size:22px;text-decoration:none;color:#182740}.brand span{color:#295ddc}main{background:white;border-radius:18px;padding:36px;margin-bottom:24px}h1{font-size:clamp(30px,5vw,42px);line-height:1.2;letter-spacing:-.03em}h2{font-size:23px;line-height:1.35;margin-top:32px}p,li,pre{overflow-wrap:anywhere}a{color:#194bbf;text-underline-offset:3px}a:focus-visible{outline:3px solid #245bd0;outline-offset:4px}.notice{background:#eef3ff;border:1px solid #a9bbdf;padding:18px;border-radius:10px}[hidden]{display:none!important}.error{color:#85223e;background:#fff0f4;padding:16px;border-radius:8px}footer{font-size:14px}.small{font-size:15px;color:#465574}@media(max-width:600px){main{border-radius:0;padding:24px 18px}header,footer{padding:18px}}