@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root{--paper:#f7f5ef;--ink:#252a25;--muted:#777b73;--line:#dedfd5;--orange:#d84b28;--soft:#eeeee6;--mono:'Courier New',monospace;--heading:'Space Grotesk',sans-serif;--body:'DM Sans',sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:14px;-webkit-font-smoothing:antialiased}button,input,textarea{font:inherit}button,a,input,textarea,summary{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{cursor:pointer}button:disabled{cursor:default;opacity:.42}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--orange);outline-offset:5px}input:focus-visible,textarea:focus-visible{outline:2px solid var(--orange);outline-offset:3px}button{transition:background .18s,color .18s,transform .18s}button:not(:disabled):active{transform:translateY(1px)}.wrap{max-width:1248px;margin:auto;padding-left:44px;padding-right:44px}.site-header{height:100px;display:flex;align-items:center;border-bottom:1px solid var(--line);gap:68px}.brand{display:flex;align-items:center;font-family:var(--heading);font-size:24px;letter-spacing:-1.1px;font-weight:700;white-space:nowrap}.brand-light{font-weight:400}.brand-period{font:10px var(--body);align-self:flex-start;margin:5px 0 0 3px}.brand-icon{display:flex;align-items:center;gap:4px;margin-right:10px}.brand-icon i{height:9px;width:9px;background:var(--orange);border-radius:9px}.brand-icon b{height:9px;width:24px;background:var(--orange);border-radius:9px}.site-header nav{display:flex;gap:32px;font-size:13px;font-weight:600}.site-header nav a:hover,.site-footer>a:last-child:hover{color:var(--orange)}.site-header nav span{color:var(--muted);margin-left:7px}.header-note{margin-left:auto;font-size:9px;letter-spacing:1.2px;display:flex;gap:9px;align-items:center;color:#60675e}.header-note>span{width:6px;height:6px;border-radius:50%;background:#70856b}.hero{display:grid;grid-template-columns:1.4fr 1fr;align-items:center;gap:50px;padding:65px 0 51px}.eyebrow{font-size:10px;font-weight:650;letter-spacing:1.8px;display:block;color:#686f62;margin:0 0 20px}.hero .eyebrow{display:flex;gap:10px;align-items:center}.hero .eyebrow>span{width:18px;height:2px;background:var(--orange)}h1{font-family:var(--heading);font-size:clamp(44px,5.2vw,67px);line-height:1.08;letter-spacing:-3.8px;font-weight:500;margin:0}h1 em{font-style:normal;color:var(--orange)}.hero-description{font-size:15px;line-height:1.7;color:#73776d;max-width:410px;margin:23px 0 0}.signal-art{position:relative;height:245px;overflow:hidden;background-image:radial-gradient(#b5b8a74f .8px,transparent .8px);background-size:13px 13px;border-radius:50% 50% 15px 15px}.art-caption{position:absolute;top:8px;left:50%;transform:translateX(-50%);white-space:nowrap;font-size:8px;letter-spacing:1.7px;color:#8a8c7f;background:var(--paper);padding:7px;z-index:1}.orbit{border:1px solid #d4d8c8;border-radius:50%;position:absolute;left:50%;top:50%;transform:translate(-50%,-50%)}.orbit-one{width:160px;height:160px}.orbit-two{width:245px;height:245px}.orbit-three{width:335px;height:335px}.art-code{position:absolute;inset:0;display:flex;gap:7px;align-items:center;justify-content:center}.art-code i{width:13px;height:13px;border-radius:20px;background:var(--orange)}.art-code b{width:34px;height:13px;border-radius:20px;background:var(--ink)}.art-code b:first-of-type,.art-code i:nth-last-child(3){margin-left:9px}.art-bottom{position:absolute;bottom:16px;left:14px;right:14px;font:10px var(--mono);letter-spacing:3px;display:flex;justify-content:space-between;color:#73796c}.art-bottom span{font-size:9px;letter-spacing:1px}.workspace{background:#fffefb;border:1px solid #d8dbce;border-radius:15px;overflow:hidden;box-shadow:0 5px 0 #eaece2,0 18px 36px #343d2610;scroll-margin-top:20px}.tool-nav{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:10px 20px;background:#fbfaf6;gap:12px}.tool-nav nav{display:flex;gap:5px}.tool-nav a{display:flex;align-items:center;gap:9px;padding:12px 19px;font-size:13px;font-weight:550;border-radius:7px;color:#71766a}.tool-nav a[aria-current=page]{background:var(--ink);color:white}.tool-nav a:hover:not([aria-current]){background:#ebeee4}.tool-nav a span{font-size:20px;font-weight:400;line-height:1}.tool-standard{font-size:9px;letter-spacing:1.7px;color:#7a806f}.editor-grid{display:grid;grid-template-columns:1fr 1fr;min-height:266px}.input-pane,.output-pane{padding:25px 27px 18px;display:flex;flex-direction:column;min-width:0}.input-pane{border-right:1px solid var(--line)}.output-pane{background:#f2f4ea}.pane-label{display:flex;justify-content:space-between;align-items:center;font-size:10px;font-weight:650;letter-spacing:1.3px;gap:10px}.pane-label>span:last-child{font-family:var(--mono);font-size:10px;font-weight:400;letter-spacing:0;color:#7c8373}.pane-label .live-label{display:flex;gap:6px;align-items:center;font-size:8px!important;letter-spacing:.8px!important}.live-label i{height:5px;width:5px;background:#72866a;border-radius:50%}textarea{width:100%;resize:vertical;min-height:151px;max-height:450px;display:block;border:0;background:transparent;color:var(--ink);font-size:24px;line-height:1.65;letter-spacing:.15px;padding:23px 0 12px;flex:1}textarea::placeholder{color:#9c9f96;font-size:20px}.code-output{font:600 27px/1.7 var(--mono);letter-spacing:2px;overflow-wrap:anywhere;padding:23px 0 12px;min-height:151px;max-height:450px;overflow:auto;flex:1;color:#43523b}.code-output.decoded{font:500 24px/1.65 var(--body);letter-spacing:.1px}.code-output.empty{font:400 19px/1.7 var(--body);letter-spacing:0;color:#858d7a}.input-bottom,.output-bottom{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:10px;min-height:31px;font-size:10px;color:#828777}.text-button{border:0;padding:5px;background:transparent;color:#777d6f;font-size:11px}.text-button span{margin-left:4px;font-size:18px}.copy-button{display:flex;gap:7px;white-space:nowrap;align-items:center;padding:7px 11px;background:#fffefa;border:1px solid #d6dbcb;border-radius:5px;font-size:11px;color:#4f5947}.copy-button:hover{background:#e7ebdc}.settings-row{border-top:1px solid var(--line);padding:24px 28px;display:flex;gap:42px;align-items:center}.setting{flex:1;max-width:230px}.setting label{display:flex;justify-content:space-between;font-size:11px;font-weight:550;margin-bottom:13px;gap:12px}.setting label span{font:10px var(--mono);color:#737a68}.setting input{accent-color:var(--orange);width:100%;height:4px;display:block;margin:0;cursor:pointer}.timing-note{display:flex;align-items:center;gap:12px;font-size:11px;margin-left:auto;white-space:nowrap;color:#666f5c}.timing-note>span:first-child{font-size:23px}.timing-note strong{font-weight:500;color:#3b4534}.timing-note small{display:block;font-size:9px;color:#888e7d;margin-top:5px}.transport{display:flex;justify-content:space-between;align-items:center;padding:0 28px 23px;gap:20px}.transport-buttons{display:flex;gap:10px}.primary-button,.secondary-button,.stop-button{border:1px solid transparent;border-radius:7px;display:flex;align-items:center;justify-content:center;gap:9px;padding:12px 19px;font-size:12px;font-weight:600}.primary-button{background:var(--orange);color:#fff}.primary-button:hover{background:#bf3e1e}.secondary-button{background:white;border-color:#d5d8cd;color:#4b5542}.secondary-button:hover{background:#f0f2e9}.stop-button{background:#f0f1ea;color:#57604d}.playback-status{font:10px var(--mono);color:#727b65;text-align:right}.workspace-footer{display:flex;align-items:center;justify-content:space-between;gap:15px;border-top:1px solid var(--line);padding:17px 27px;background:#fbfcf7}.quick-examples{display:flex;align-items:center;gap:9px}.quick-examples>span{font-size:8px;letter-spacing:1.2px;color:#939888;margin-right:4px}.quick-examples button{border:1px solid #dde1d2;background:transparent;border-radius:30px;padding:6px 12px;font-size:10px;color:#58634b}.quick-examples button:hover{background:#e7ebdf}.quick-examples button span{color:#949c87;margin-left:7px}.privacy-note{font-size:9px;color:#7b846d;white-space:nowrap}.privacy-note>span{margin-right:5px}.notice{background:#fff0df;padding:12px 27px;color:#8b3c1d;font-size:12px;line-height:1.5;border-top:1px solid #eed0af;overflow-wrap:anywhere}.light-panel{display:grid;grid-template-columns:130px 1fr;gap:24px;align-items:center;padding:0 28px 24px}.lamp{height:115px;background:#222b21;border:1px solid #59634d;border-radius:10px;display:grid;place-items:center;color:#8c997d;font:26px var(--mono)}.lamp.on{background:#ffda7d;color:#342b16;border-color:#e9b643}.light-panel strong{font-family:var(--heading);font-weight:500;font-size:17px}.light-panel p{color:#767a6f;font-size:11px;line-height:1.65;max-width:470px}.light-panel>div>span{font-size:9px;color:#7f8772}.progress-track{height:3px;background:#f1f3e9}.progress-track>div{height:3px;width:0;background:var(--orange)}.how-it-works{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;gap:30px;padding:69px 0 57px;border-bottom:1px solid var(--line)}h2{font-family:var(--heading);font-size:28px;font-weight:500;line-height:1.25;letter-spacing:-1px;margin:0}.section-intro .eyebrow{font-size:8px;letter-spacing:1.5px;margin-bottom:13px}.section-intro p,.guide-card p{font-size:12px;line-height:1.8;color:#7b8073;margin:12px 0 0;max-width:210px}.guide-card{padding:7px 0 0 27px;border-left:1px solid var(--line)}.guide-symbol{height:16px;background:#59694d;margin-bottom:25px;border-radius:10px}.guide-symbol.dot{width:16px}.guide-symbol.dash{width:50px}.guide-spaces{height:16px;margin-bottom:25px;display:flex;gap:13px;align-items:center}.guide-spaces i{height:10px;width:10px;border:1.5px solid #667655;border-radius:50%}.guide-number{font:8px var(--mono);letter-spacing:1px;color:#89927c}h3{font-family:var(--heading);font-size:18px;font-weight:500;letter-spacing:-.4px;margin:10px 0 0}.alphabet-section{padding:53px 0 39px}.alphabet-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:24px}.alphabet-heading .eyebrow{font-size:9px;margin-bottom:12px}.alphabet-heading h2 span{color:var(--orange)}.alphabet-heading p{font-size:11px;color:#818776;line-height:1.8;margin:0}.alphabet-grid{display:grid;grid-template-columns:repeat(9,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line);border-radius:8px;overflow:hidden}.letter-card{background:transparent;border:0;border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 10px;text-align:center;display:flex;align-items:center;justify-content:center;gap:13px;min-height:58px}.letter-card:hover{background:#e9eddf}.letter-card strong{font:500 18px var(--heading)}.letter-card span{font:600 14px var(--mono);letter-spacing:1px;color:#6a785c;white-space:nowrap}.alphabet-tip{color:#818975;font-size:10px;margin-top:14px}.faq-section{padding:23px 0 55px;display:grid;grid-template-columns:1fr 3fr;gap:30px}.faq-section>.eyebrow{padding-top:18px;font-size:9px}.faq-section details{border-bottom:1px solid var(--line)}summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;padding:17px 0;font-size:13px;font-weight:500;gap:20px}summary::-webkit-details-marker{display:none}summary span{font-size:18px;color:#8a937e}details[open] summary span{transform:rotate(45deg)}details p{font-size:12px;line-height:1.8;color:#767f6b;margin:0 28px 18px 0}.site-footer{border-top:1px solid var(--line);padding-top:25px;padding-bottom:30px;display:flex;justify-content:space-between;align-items:center;gap:20px}.site-footer .brand{font-size:19px}.site-footer>span{font-size:8px;letter-spacing:1.4px;color:#8c9480}.site-footer>a:last-child{font-size:11px;color:#626e54}.skip{position:absolute;left:20px;top:-80px;background:#fff;padding:12px;z-index:20}.skip:focus{top:12px}.noscript-note{background:#fff0df;padding:20px}[hidden]{display:none!important}body[data-mode=light] .audio-setting{display:none}body[data-mode=light] .timing-note{margin-left:0}body[data-mode=light] .setting{max-width:300px}body[data-mode=decoder] textarea{font-family:var(--mono);font-size:21px}
@media(min-width:1400px){.wrap{max-width:1336px;padding-left:56px;padding-right:56px}.hero{padding-top:72px;padding-bottom:58px}.signal-art{height:260px}}
@media(max-width:1050px){.header-note{display:none}.site-header{justify-content:space-between}.wrap{padding-left:28px;padding-right:28px}.hero{gap:20px}h1{font-size:53px}.tool-standard{display:none}.tool-nav nav{width:100%;justify-content:space-between}.settings-row{gap:25px}.timing-note{display:none}.privacy-note{display:none}.alphabet-grid{grid-template-columns:repeat(6,1fr)}.how-it-works{gap:20px}.guide-card{padding-left:20px}.guide-card h3{font-size:16px}.section-intro h2{font-size:23px}.signal-art .art-code{gap:5px}.art-code b{width:25px}.art-code i{width:10px;height:10px}.art-code b{height:10px}}
@media(max-width:700px){.wrap{padding-left:20px;padding-right:20px}.site-header{height:78px;gap:10px}.brand{font-size:21px}.site-header nav{gap:18px;font-size:11px}.header-note{display:none}.hero{padding:38px 0 31px;display:block;position:relative}.hero .eyebrow{font-size:8px;letter-spacing:1.3px;margin-bottom:17px}h1{font-size:49px;letter-spacing:-2.8px}.hero-description{font-size:13px;margin-top:17px;max-width:340px}.signal-art{display:none}.tool-nav{padding:9px 8px}.tool-nav nav{gap:2px}.tool-nav a{gap:6px;padding:11px 10px;font-size:11px}.tool-nav a span{font-size:17px}.editor-grid{grid-template-columns:1fr}.input-pane,.output-pane{padding:19px 20px 15px}.input-pane{border-right:0;border-bottom:1px solid var(--line)}textarea,.code-output{min-height:116px;padding-top:20px;font-size:22px}.code-output{font-size:24px}.input-bottom,.output-bottom{font-size:9px}.pane-label{font-size:9px}.settings-row{padding:23px 20px;gap:22px;flex-wrap:wrap}.setting{min-width:calc(50% - 22px);max-width:none}.setting:last-of-type{max-width:45%}.setting label{font-size:10px}.transport{padding:0 20px 19px;flex-wrap:wrap;gap:14px}.transport-buttons{width:100%;gap:7px}.primary-button,.secondary-button,.stop-button{padding:11px 12px;gap:6px;font-size:11px}.primary-button{flex:1}.secondary-button{flex:1}.playback-status{font-size:9px;text-align:left}.workspace-footer{padding:15px 20px}.quick-examples{gap:6px;flex-wrap:wrap}.quick-examples>span{width:100%;margin-bottom:5px;font-size:8px}.quick-examples button{padding:6px 10px}.how-it-works{padding:45px 0 35px;grid-template-columns:1fr 1fr;gap:30px 20px}.section-intro h2{font-size:25px}.section-intro p,.guide-card p{font-size:11px}.guide-card{padding:5px 0 0 19px}.guide-card h3{font-size:17px}.alphabet-section{padding-top:35px}.alphabet-heading h2{font-size:26px}.alphabet-heading p{display:none}.alphabet-grid{grid-template-columns:repeat(4,1fr)}.letter-card{padding:13px 6px;gap:7px;flex-direction:column;min-height:72px}.letter-card span{font-size:13px}.alphabet-tip{font-size:10px;line-height:1.7}.faq-section{display:block;padding-bottom:35px}.faq-section>.eyebrow{padding-top:0;margin-bottom:0}summary{font-size:12px}.site-footer{flex-wrap:wrap;padding-top:22px;padding-bottom:25px}.site-footer>span{order:3;width:100%;font-size:7px}.light-panel{grid-template-columns:84px 1fr;gap:15px;padding:0 20px 20px}.lamp{height:100px}.light-panel strong{font-size:15px}.light-panel p{font-size:10px}.light-panel>div>span{font-size:8px}.notice{padding:12px 20px}.output-bottom>span{max-width:65%}}
/* Keep the whole tool switcher visible and make controls easy to touch. */
@media(max-width:900px),(pointer:coarse){
  .primary-button,.secondary-button,.stop-button,.copy-button,.text-button,.quick-examples button{min-height:44px;min-width:44px}
  .setting input{height:44px;appearance:none;-webkit-appearance:none;background:transparent;border:0;border-radius:0;touch-action:pan-y}
  .setting input::-webkit-slider-runnable-track{height:4px;background:#d7ddcc;border-radius:4px}
  .setting input::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:22px;height:22px;background:var(--orange);border:2px solid #fffefb;border-radius:50%;margin-top:-9px;box-shadow:0 0 0 1px #bc4727}
  .setting input::-moz-range-track{height:4px;background:#d7ddcc;border-radius:4px}
  .setting input::-moz-range-thumb{width:18px;height:18px;background:var(--orange);border:2px solid #fffefb;border-radius:50%}
  .setting label{margin-bottom:0}
  .site-header nav a{min-height:44px;display:inline-flex;align-items:center;white-space:nowrap}
}
@media(max-width:700px){
  .tool-nav nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:3px;min-width:0}
  .tool-nav a{flex-direction:column;justify-content:center;gap:6px;padding:9px 3px;min-height:60px;min-width:0;font-size:11px;white-space:nowrap}
  .tool-nav a span{font-size:19px}
  .transport-buttons{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
  .stop-button{grid-column:1/-1}
  body[data-mode=light] .stop-button{grid-column:auto}
  .settings-row{padding-top:17px;padding-bottom:12px;row-gap:12px}
}
@media(max-width:380px){
  .site-header{height:auto;min-height:78px;flex-wrap:wrap;padding-top:18px;padding-bottom:9px;gap:4px}
  .site-header nav{width:100%;justify-content:space-between;gap:20px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}button{transition:none}}