:root{color-scheme:dark;font:16px -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:#0c1922;color:#e4edf4}*{box-sizing:border-box}body{margin:0}header,main,footer{max-width:650px;margin:auto;padding:22px max(18px,env(safe-area-inset-left))}header{padding-top:max(28px,env(safe-area-inset-top));padding-bottom:0}.tag{font-size:11px;letter-spacing:2px;color:#82dadd}h1{font-size:38px;color:#9ae9e7;margin:8px 0}h2{font-size:19px;margin:0 0 16px}h3{font-size:18px}p,li{line-height:1.75}ol,ul{padding-left:23px}li+li{margin-top:9px}.card{padding:20px;margin:0 0 16px;background:#162b39;border:1px solid #31515f;border-radius:16px}.small,footer{font-size:12px;color:#a9c1cc}button,textarea{font:inherit;color:inherit;border:1px solid #527888;border-radius:9px;background:#203d4b}button{padding:12px 16px;min-height:46px;cursor:pointer}button:disabled{opacity:.45;cursor:default}button[aria-pressed=true]{background:#127c86;border-color:#80e9e5}button:focus-visible,textarea:focus-visible{outline:3px solid #ffc071;outline-offset:3px}.switch{display:flex;gap:10px}.switch button{flex:1}textarea{width:100%;padding:12px;display:block;margin:10px 0;resize:vertical}.score{font-size:30px;color:#9ae9e7;font-weight:bold;font-variant-numeric:tabular-nums}.good{color:#99e8b2}.error{color:#ffc2ad}footer{padding-top:0;padding-bottom:max(30px,env(safe-area-inset-bottom))}