:root{color-scheme:light;--bg:#faf9fd;--surface:#fff;--text:#302d3d;--muted:#787184;--border:#e3dfec;--accent:#7960b0}:root[data-color-mode=dark]{color-scheme:dark;--bg:#201d29;--surface:#292534;--text:#f4effb;--muted:#bcb2cc;--border:#4a405b;--accent:#c5acef}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,sans-serif;padding:24px}header{max-width:880px;margin:auto;display:flex;justify-content:space-between;gap:20px}header a:first-child{font-size:30px;font-weight:650;letter-spacing:-1px;text-decoration:none}sup{font-size:12px;color:var(--accent)}a{color:inherit}main{max-width:680px;margin:50px auto}h1{font-size:38px;letter-spacing:-1.5px;line-height:1.2}h2{font-size:23px;letter-spacing:-.5px;margin-top:0}p{color:var(--muted)}section{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:28px;margin:24px 0}label{display:grid;gap:8px;margin:20px 0}input,select,textarea,button{font:inherit;border-radius:10px}input,select,textarea{width:100%;padding:12px;border:1px solid var(--border);background:var(--bg);color:var(--text)}button{padding:12px 18px;background:var(--text);color:var(--bg);border:0;cursor:pointer}button:disabled{opacity:.5;cursor:default}.secondary{background:transparent;color:var(--accent);margin-top:12px}.check{display:flex;align-items:flex-start;gap:12px}.check input{width:18px;height:18px;margin-top:5px;flex-shrink:0}.hint{font-size:13px}#status:not(:empty),#preview{padding:18px;border-radius:12px;border:1px solid var(--border);background:var(--surface)}#preview-text{white-space:pre-wrap;color:var(--text);overflow-wrap:anywhere}#history{font-size:14px;margin-top:20px}input:focus-visible,button:focus-visible,textarea:focus-visible,select:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}[hidden]{display:none!important}@media(max-width:480px){body{padding:16px}main{margin-top:32px}section{padding:22px}h1{font-size:32px}}