:root{color-scheme:dark;--bg:#080c14;--fg:#eaf0f6;--muted:#9bacbf;--line:#29384c;--accent:#72efda;--on:#062a26;font-family:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.7;background:var(--bg);color:var(--fg)}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 80% 0%,#11243880,transparent 48%),var(--bg);min-width:320px}button,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:1px solid var(--line);border-radius:10px;background:#101925;color:var(--fg);padding:11px 17px;min-height:46px;text-align:left;transition:background .18s,border-color .18s}button:hover{background:#1a2837;border-color:#567182}button.primary,button.active{background:var(--accent);color:var(--on);border-color:var(--accent);font-weight:600}button:disabled{opacity:.38;cursor:default}button:focus-visible,a:focus-visible,summary:focus-visible,textarea:focus-visible{outline:2px solid 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/* Immediate feedback and completion experience */
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