:root{--paper:#f6f5f1;--ink:#242722;--muted:#7b7e75;--line:#e7e6df;--green:#70b7cf;--deep:#234d59;--white:#fff;--mono:'DM Mono',monospace;--sans:'DM Sans',sans-serif;--display:'Manrope',sans-serif}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);min-height:100vh;overflow-x:clip}
.topbar{height:76px;padding:0 max(36px,calc((100vw - 1080px)/2));display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:800 21px var(--display);letter-spacing:-1.2px}
.brand-mark{width:28px;height:28px;border-radius:9px;background:var(--green);display:grid;place-items:center;font:800 19px var(--display);color:#163943;letter-spacing:-1px}
.brand-dot{color:#35788f}
.top-note{font-size:12px;color:var(--muted);display:flex;gap:8px;align-items:center}
.status-dot,.format-dot{width:7px;height:7px;background:#79bfd2;border-radius:50%;display:inline-block}
main{max-width:900px;margin:0 auto;padding:69px 24px 0}
.intro{text-align:center;margin-bottom:39px}
.eyebrow{font:500 10px var(--mono);letter-spacing:1.8px;color:#86897d;margin-bottom:16px}
.intro h1{font:700 clamp(38px,6vw,58px)/1.04 var(--display);letter-spacing:-2.8px;margin:0}
.intro h1 em{font-weight:500;color:#9bbdc7}
.intro p{max-width:480px;margin:18px auto 0;color:#777a71;font-size:14px;line-height:1.6}
.workbench{max-width:740px;margin:auto;position:relative}
.editor-panel,.preview-panel{background:var(--white);border:1px solid #e6e5dd;border-radius:13px;box-shadow:0 7px 24px #43483008;overflow:hidden}
.panel-heading{height:52px;padding:0 20px;border-bottom:1px solid #f0efe9;display:flex;justify-content:space-between;align-items:center}
.panel-heading>div{display:flex;align-items:center;gap:11px}
.step{font:400 10px var(--mono);color:#9a9d92}
.panel-title{font-size:12px;font-weight:600}
.language-tag,.format-tag{font:500 9px var(--mono);letter-spacing:1px;color:#898c82}
.format-tag{display:flex;align-items:center;gap:7px}
.format-dot{width:6px;height:6px}
.editor-heading-tools{display:flex;align-items:center;gap:14px}
.editor-dictionary-link{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border:1px solid #569bb2;border-radius:8px;background:#70b7cf;color:#244e5b;text-decoration:none;font:700 11px var(--sans);transition:background .15s,border-color .15s,transform .15s}
.editor-dictionary-link:hover{background:#66a9c3;border-color:#488fa7;transform:translateY(-1px)}
.editor-dictionary-link:first-letter{font-size:15px}
.editor-panel textarea{width:100%;height:91px;border:0;outline:0;resize:vertical;padding:22px 21px 13px;font:15px/1.7 var(--mono);color:#42483c;background:transparent}
.editor-footer{padding:0 20px 15px;display:flex;justify-content:space-between;align-items:center;color:#a0a196;font-size:10px}
.example{border:0;background:none;color:#367e96;padding:0;font:500 10px var(--sans);cursor:pointer;text-decoration:underline;text-underline-offset:2px}
.example:hover{color:#285b6b}
.live-indicator{font:500 9px var(--mono);letter-spacing:.7px;display:flex;align-items:center;gap:6px}
.live-indicator i{width:5px;height:5px;background:#79bfd2;border-radius:50%}
.connector{height:31px;display:grid;place-items:center;color:#a5a797}
.connector span{font-size:17px;line-height:1}
.preview{min-height:164px;display:flex;justify-content:center;align-items:center;padding:35px 24px;overflow:auto;color:#292d26}
.preview mjx-container{font-size:150%!important;max-width:100%;overflow-x:auto;overflow-y:hidden}
.preview.has-math{justify-content:flex-start}
.preview.has-math>mjx-container[display="true"]{width:100%;max-width:100%;min-width:0;flex:1 1 100%}
.placeholder{color:#b5b6ae;font-size:12px}
.preview-footer{border-top:1px solid #f0efe9;min-height:62px;padding:10px 15px 10px 20px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.hint{font-size:10px;color:#909288;display:flex;gap:7px;align-items:center}
.hint-icon{font-size:14px;color:#9aa17e}
.actions{display:flex;align-items:center;gap:8px}
.copy-actions{display:flex;gap:8px}
.button{height:35px;border-radius:7px;padding:0 13px;font:600 11px var(--sans);cursor:pointer;transition:transform .12s,background .12s}
.button:active{transform:scale(.97)}
.secondary{border:1px solid #e6e6df;background:#fff;color:#55594e}
.secondary:hover{background:#f8f8f4}
.secondary span{margin-left:4px}
.primary{border:1px solid #70b2c7;background:var(--green);color:#183b45;padding:0 15px}
.primary:hover{background:#5fa4ba}
.copy-icon{font-size:14px;margin-right:5px}
.error{font-size:11px;color:#a44236;padding:10px 14px;background:#fff0ed;border-radius:7px;margin-top:10px}
.how{max-width:740px;margin:41px auto 0;display:flex;justify-content:space-between;align-items:center;padding:0 4px}
.how-title{font:600 13px var(--display);letter-spacing:-.3px}
.how-title span{color:#898d80;font-weight:500}
.how-items{display:flex;align-items:center;gap:11px}
.how-items>div:not(.how-line){display:flex;gap:6px;align-items:center;font-size:10px;color:#777a71}
.how-items b{font:400 9px var(--mono);color:#a2a493}
.how-line{width:22px;height:1px;background:#dcdcd2}
footer{max-width:900px;margin:60px auto 0;border-top:1px solid var(--line);padding:17px 24px 24px;display:flex;justify-content:space-between;color:#a0a196;font-size:10px}
footer.site-footer{width:100%;max-width:none;margin:64px 0 0;padding:0;border:0;display:block;background:#286b81;color:#f7f6f2;font-size:14px}
.footer-inner{max-width:1200px;margin:0 auto;padding:46px 36px 22px}
.footer-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:42px;padding-bottom:36px}
.footer-column{display:flex;flex-direction:column;align-items:flex-start;gap:11px}
.footer-column h2{margin:0 0 6px;color:#fff;font:700 15px var(--display);letter-spacing:-.2px}
.site-footer .footer-column a{color:#f2f1ed;text-decoration:none;font-size:13px;line-height:1.5;overflow-wrap:anywhere}
.site-footer .footer-column a:hover{color:var(--green);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #696a65;padding-top:18px;color:#f2f1ed;font-size:11px;line-height:1.6}
.footer-bottom span:last-child{color:#f2f1ed}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:600px){
  .topbar{height:62px;padding:0 12px}
  main{padding:48px 16px 0}
  .intro h1{letter-spacing:-1.8px}
  .intro p{font-size:13px}
  .editor-heading-tools{gap:8px}
  .editor-dictionary-link{padding:7px 10px;font-size:10px}
  .language-tag{font-size:8px}
  .preview-footer{align-items:flex-start;flex-direction:column;padding:12px 14px}
  .actions{width:100%;justify-content:flex-end}
  .copy-actions{gap:6px}
  .button{padding:0 9px}
  .primary{padding:0 10px}
  .how{align-items:flex-start;flex-direction:column;gap:14px;margin-top:31px}
  .how-items{gap:7px}
  .how-line{width:12px}
  footer{margin-top:40px;gap:12px;flex-direction:column}
  .editor-footer{font-size:9px}
  .example{font-size:9px}
}
@media(max-width:650px){footer.site-footer{margin-top:46px}.footer-inner{padding:34px 20px 18px}.footer-columns{grid-template-columns:1fr;gap:27px;padding-bottom:25px}.footer-column{gap:8px}.footer-column h2{margin-bottom:4px}.footer-bottom{flex-direction:column;gap:5px}}