:root{color-scheme:light;--paper:#f6f3ff;--surface:#fff;--ink:#17152d;--muted:#706c8b;--line:#e3dff0;--primary:#7643e8;--selection:#eee6ff;--teal:#168b86;--shadow:0 12px 36px #3726560a;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);letter-spacing:0}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit;color:inherit;letter-spacing:0}a{color:var(--primary);text-underline-offset:5px}button,a,input,select{-webkit-tap-highlight-color:transparent}button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:10px 17px;border:1px solid var(--line);border-radius:6px;background:var(--surface);font-weight:650;cursor:pointer}button svg{flex:none}button:hover:not(:disabled){border-color:var(--primary)}button:disabled{opacity:.48;cursor:not-allowed}button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:3px solid var(--primary);outline-offset:3px}.primary{background:var(--primary);border-color:var(--primary);color:#fff}.primary:hover:not(:disabled){filter:brightness(.94)}[hidden]{display:none!important}input,select{min-height:44px;border:1px solid var(--line);border-radius:6px;background:var(--surface);padding:9px 12px;min-width:0;max-width:100%}input[aria-invalid=true]{border-color:#c23955}input[type=range]{accent-color:var(--primary);padding:0;min-height:44px;border:0;background:transparent;cursor:pointer}label{color:var(--muted);font-size:14px;line-height:1.5}label input{display:block;width:100%;margin-top:5px;color:var(--ink)}.sr-only,.skip:not(:focus){position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.skip:focus{position:fixed;z-index:5;top:10px;left:10px;padding:12px;background:var(--surface)}
.rev-header{max-width:1440px;margin:auto;min-height:76px;padding:12px 32px;display:flex;align-items:center;gap:36px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;white-space:nowrap;font-size:23px;font-weight:750;text-decoration:none;color:var(--ink)}.rev-header nav{display:flex;align-items:center;gap:24px;flex:1;flex-wrap:wrap}.rev-header nav a{font-size:15px;color:var(--ink);text-decoration:none;padding:13px 0}.rev-header nav [aria-current]{color:var(--primary);border-bottom:3px solid var(--primary);font-weight:700}.header-options{display:flex;align-items:center;gap:8px}.header-options select{max-width:145px}.header-options button{width:44px;min-width:44px;padding:0;font-size:23px}
main,footer{max-width:1376px;margin:auto;padding:0 32px}.rev-intro{position:relative;min-height:214px;display:flex;align-items:center;padding:30px 0;gap:20px}.rev-intro>div{position:relative;z-index:1;flex:1;min-width:0}.rev-intro h1{font-size:40px;line-height:1.2;margin:0 0 14px;font-weight:800;overflow-wrap:anywhere}.lead{font-size:19px;line-height:1.65;margin:0;color:var(--muted)}.trust{list-style:none;padding:0;margin:20px 0 0;display:flex;flex-wrap:wrap;gap:12px;font-size:14px;color:var(--ink)}.trust li+li{border-left:1px solid var(--line);padding-left:12px}.rev-art{width:35%;height:180px;object-fit:contain;mix-blend-mode:multiply}.reverser{border:1px solid var(--line);border-radius:8px;background:var(--surface);padding:0 26px 24px;box-shadow:var(--shadow)}.filebar{min-height:91px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 0}.file-info{display:flex;gap:14px;align-items:center;min-width:0}.file-info>div{min-width:0}.file-info strong{font-size:18px;overflow-wrap:anywhere;line-height:1.5}.file-info p{font-size:13px;color:var(--muted);margin:4px 0 0}.file-icon{height:48px;width:48px;flex:none;display:grid;place-items:center;border-radius:6px;background:var(--selection);color:var(--primary)}#revStatus{font-size:14px;color:var(--muted);line-height:1.7;min-height:24px;margin:12px 0}#revStatus[data-error]{color:#bc2748}.empty-state{min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:30px 12px;gap:14px}.empty-state h2{font-size:26px;margin:0}.empty-state p{color:var(--muted);max-width:640px;font-size:15px;line-height:1.7;margin:0}.empty-state>span{font-size:13px;color:var(--muted)}.reverser[data-drag]{outline:3px dashed var(--primary);outline-offset:4px}.processing{display:flex;gap:16px;align-items:center;margin:10px 0}.processing progress{width:100%;height:8px;accent-color:var(--primary)}
.modebar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:18px 0}.modebar fieldset{padding:0;margin:0;border:1px solid var(--line);border-radius:6px;display:flex;max-width:100%;overflow:hidden}.modebar label{position:relative;display:flex;align-items:stretch;min-width:140px;flex:1;cursor:pointer}.modebar input{position:absolute;width:1px;height:1px;opacity:0}.modebar span:not(.format){padding:11px 18px;display:flex;align-items:center;justify-content:center;min-height:46px;color:var(--ink);text-align:center;font-weight:650}.modebar input:checked+span{background:var(--primary);color:#fff}.modebar input:focus-visible+span{outline:3px solid var(--ink);outline-offset:-4px}.format{font-size:12px;color:var(--muted);background:var(--selection);padding:8px;border-radius:4px}.source-label{font-size:14px;margin:18px 0 6px;font-weight:650}.ruler{display:flex;justify-content:space-between;margin:0 10px 5px;font-size:12px;font-variant-numeric:tabular-nums;color:var(--muted)}.wave{position:relative;min-height:140px;height:155px;margin:0 12px 8px;touch-action:pan-y;isolation:isolate}.wave canvas{width:100%;height:100%;display:block;border-bottom:1px solid var(--line)}.region{position:absolute;top:0;bottom:0;left:0;width:100%;background:color-mix(in srgb,var(--primary) 13%,transparent);border-left:2px solid var(--primary);border-right:2px solid var(--primary);pointer-events:none}.handle{position:absolute;top:0;height:100%;width:28px;min-height:44px;padding:0;transform:translateX(-50%);border:0;background:transparent;border-radius:0;touch-action:none;z-index:2;color:var(--primary)}.handle:after{position:absolute;bottom:0;content:"";width:11px;height:24px;border-radius:3px;background:var(--primary);box-shadow:inset 0 0 0 3px var(--selection)}.handle>span{height:100%;width:2px;background:var(--primary)}#revSource{display:block;width:100%;height:48px;margin:10px 0 18px}.time-fields{display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px}.time-fields input,.time-fields output{font-size:18px;font-variant-numeric:tabular-nums;font-weight:650}.time-fields output{display:block;background:var(--paper);border-radius:6px;min-height:46px;margin-top:5px;padding:10px 12px;color:var(--muted)}.commands{display:flex;justify-content:space-between;gap:14px;margin-top:20px}.results{border-top:1px solid var(--line);margin-top:24px;padding-top:18px}.results h2{font-size:19px;display:flex;gap:18px;align-items:center;flex-wrap:wrap;margin:0 0 16px}.ready{color:var(--muted);font-size:12px;font-weight:400}.ready:before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--teal);margin-right:7px}.result-grid{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:24px}.listen-row{display:grid;grid-template-columns:44px minmax(90px,135px) minmax(0,1fr) auto;grid-template-rows:28px 30px;column-gap:12px;align-items:center;min-height:74px;color:var(--teal)}.listen-row.reversed{color:var(--primary)}.circle{grid-row:1/3;width:44px;min-height:44px;padding:0;border:0;border-radius:50%;background:var(--teal);color:#fff}.reversed .circle{background:var(--primary)}.circle[data-playing] svg{display:none}.circle[data-playing]:after{content:"Ⅱ";font-size:20px}.listen-row strong{grid-column:2;grid-row:1/3;font-size:14px;color:var(--ink);overflow-wrap:anywhere}.listen-row canvas{width:100%;height:28px;grid-column:3;grid-row:1}.listen-row input{grid-row:2;grid-column:3;width:100%;margin:0;min-height:30px;accent-color:currentColor}.listen-row output{font-size:12px;font-variant-numeric:tabular-nums;color:var(--muted);grid-column:4;grid-row:1/3;white-space:nowrap}.export{border-left:1px solid var(--line);padding-left:22px;display:flex;flex-direction:column;gap:10px}.export p{color:var(--muted);font-size:12px;line-height:1.6;margin:0}.export input{min-height:40px;font-size:13px}.export button{width:100%;min-height:48px}.steps{display:flex;align-items:center;gap:30px;padding:30px 0;border-bottom:1px solid var(--line)}.steps h2{font-size:21px;margin:0;flex-shrink:0}.steps ol{display:flex;gap:28px;list-style:none;counter-reset:steps;margin:0;padding:0;flex-wrap:wrap}.steps li{font-size:14px;display:flex;align-items:center;gap:9px;counter-increment:steps}.steps li:before{content:counter(steps);display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--selection);color:var(--primary);font-weight:700;flex:none}.lower-content{display:grid;grid-template-columns:1fr 1fr;gap:44px;padding:26px 0}.lower-content h2,.related h2{font-size:21px;line-height:1.4}.lower-content p{font-size:15px;line-height:1.85;color:var(--muted)}.related{padding:4px 0 30px;border-bottom:1px solid var(--line)}.related a{display:inline-block;margin:0 24px 12px 0;font-size:15px;line-height:1.7}footer{display:flex;justify-content:space-between;gap:20px;padding-top:26px;padding-bottom:30px;font-size:13px}footer nav{display:flex;flex-wrap:wrap;gap:15px}footer a{min-height:32px;display:inline-flex;align-items:center}
:root[data-theme=dark]{color-scheme:dark;--paper:#17171d;--surface:#222229;--ink:#f1eff8;--muted:#b3afc6;--line:#41404b;--primary:#a787ff;--selection:#373048;--teal:#65c9bc;--shadow:none}:root[data-theme=dark] .primary{color:#191622}:root[data-theme=dark] .rev-art{mix-blend-mode:normal;border-radius:6px;opacity:.8}:root[data-theme=dark] #revStatus[data-error]{color:#ff9fb5}
@media(max-width:1100px){.rev-header{gap:20px;padding:12px 22px;flex-wrap:wrap}.rev-header nav{order:3;flex-basis:100%;gap:22px}.header-options{margin-left:auto}.rev-intro h1{font-size:34px}.result-grid{grid-template-columns:minmax(0,1fr) 210px;gap:16px}.listen-row{grid-template-columns:44px 95px minmax(0,1fr)}.listen-row output{grid-column:2;grid-row:2}.listen-row strong{grid-row:1}.steps{align-items:flex-start;flex-direction:column;gap:14px}}
@media(max-width:600px){main,footer{padding-left:16px;padding-right:16px}.rev-header{padding:12px 16px;gap:12px;min-height:64px}.brand{font-size:19px;gap:6px}.brand img{width:23px;height:23px}.header-options{gap:4px}.header-options select{max-width:102px;font-size:12px;padding:6px}.rev-header nav{gap:17px;flex-wrap:nowrap;overflow-x:auto}.rev-header nav a{white-space:nowrap;font-size:13px;padding:8px 0;min-height:44px}.rev-intro{min-height:164px;padding:26px 0}.rev-intro h1{font-size:29px}.lead{font-size:15px}.trust{font-size:12px;gap:8px;margin-top:14px}.trust li+li{padding-left:8px}.rev-art{display:none}.reverser{padding:0 14px 18px}.filebar{gap:10px;min-height:86px}.file-info{gap:8px}.file-info strong{font-size:14px}.file-info p{font-size:11px}.file-icon{width:34px;height:40px}.filebar>button{padding:8px;font-size:12px;flex:none;max-width:100px;gap:5px}.filebar>button svg{width:16px}.empty-state{min-height:290px}.empty-state h2{font-size:23px}.empty-state p{font-size:13px}#revStatus{font-size:12px}.modebar{flex-wrap:wrap;margin:12px 0}.modebar fieldset{width:100%}.modebar label{min-width:0}.modebar span:not(.format){width:100%;padding:10px 8px;font-size:13px}.format{background:transparent;padding:0}.wave{height:130px;min-height:130px}.ruler span:nth-child(2),.ruler span:nth-child(4){display:none}.time-fields{grid-template-columns:1fr 1fr;gap:12px}.time-fields label:last-child{grid-column:1/-1}.time-fields input,.time-fields output{font-size:15px}.commands{flex-wrap:wrap;gap:10px}.commands .primary{width:100%;order:-1;font-size:14px}.commands>button:not(.primary){font-size:12px;min-height:44px}.result-grid{grid-template-columns:1fr}.results h2{font-size:17px}.listen-row{grid-template-columns:40px minmax(66px,84px) minmax(0,1fr);column-gap:8px;min-height:76px}.circle{width:40px;min-height:44px}.listen-row strong{font-size:12px}.listen-row output{font-size:10px}.export{border-left:0;border-top:1px solid var(--line);padding:16px 0 0}.steps{padding:25px 0}.steps h2,.lower-content h2,.related h2{font-size:19px}.steps ol{flex-direction:column;gap:12px}.lower-content{grid-template-columns:1fr;gap:6px;padding:12px 0}.lower-content p{font-size:14px}footer{flex-direction:column}footer nav a{min-height:44px}.related a{font-size:14px}}
.wave .handle{width:44px}
/* Match the cutter: full waveform, slim seek row, then one grouped editing footer. */
:root{--wave:#b49bdc}
:root[data-theme=dark]{--wave:#a58acb}
.wave-workspace{padding:0 0 14px}
.wave-workspace .wave{height:220px;min-height:220px;background:var(--paper);margin-bottom:0}
.wave-workspace .source-label{font-size:13px;color:var(--muted);margin:14px 0 12px}
.source-playhead{position:absolute;top:0;bottom:0;width:2px;background:var(--primary);pointer-events:none;z-index:1}
.source-seek{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:16px;padding:12px 0 0}
.source-seek input{margin:0;width:100%;min-height:32px}
.source-seek label{font-size:13px}
.source-seek output{font-size:13px;font-variant-numeric:tabular-nums;min-width:88px;text-align:right}
.editor-footer{display:grid;grid-template-columns:180px minmax(0,1fr) 220px;gap:24px;padding:18px 0 2px;border-top:1px solid var(--line);align-items:start}
.source-transport{display:flex;align-items:center;gap:10px}
.source-transport button{height:46px;min-height:46px;width:46px;border-radius:50%;padding:0;flex:none;background:var(--selection);border-color:transparent;color:var(--primary)}
.source-transport .transport-play{height:52px;min-height:52px;width:52px;background:var(--primary);color:#fff}
.transport-play svg:last-child{display:none}.transport-play[data-playing] svg:first-child{display:none}.transport-play[data-playing] svg:last-child{display:block}
.editor-footer .time-fields{gap:14px;grid-template-columns:repeat(3,minmax(0,1fr))}
.editor-footer .time-fields label{font-size:13px}
.editor-footer .time-fields input,.editor-footer .time-fields output{font-size:16px;min-height:50px;padding:12px 10px;font-weight:600}
.editor-footer .time-fields input{background:var(--paper)}
.editor-footer .filename-field{grid-column:1/-1}
.editor-footer .filename-field input{font-size:14px;font-weight:400}
.editor-footer .commands{display:grid;grid-template-columns:minmax(0,1fr);justify-content:stretch;gap:12px;margin:0}
.editor-footer .commands button{width:100%;min-height:50px;font-size:14px;padding:12px;line-height:1.4}
.preview-button{background:var(--surface);border-color:var(--line);color:var(--primary)}
.preview-button:hover:not(:disabled){background:var(--selection)}
.editor-footer .commands .primary{box-shadow:0 5px 14px #7643e81a}
.results{padding-top:20px;margin-top:22px}.comparison{max-width:100%}.result-note{font-size:12px;color:var(--muted);line-height:1.7;margin:12px 0 0}
.result-download{display:flex;align-items:center;justify-content:space-between;gap:18px;border-top:1px solid var(--line);margin-top:18px;padding-top:18px}
.result-download .result-note{margin:0}
.result-download button{min-width:200px;min-height:50px;flex-shrink:0;box-shadow:0 5px 14px #7643e81a}
.rev-faq{padding:8px 0 24px}.rev-faq h2{font-size:21px}.rev-faq details{border-top:1px solid var(--line)}.rev-faq summary{padding:18px 0;min-height:48px;line-height:1.6;cursor:pointer;font-size:15px;font-weight:600}.rev-faq p{max-width:900px;line-height:1.85;font-size:14px;color:var(--muted);margin:0 0 20px}
@media(max-width:600px){.result-download{flex-direction:column;align-items:stretch;gap:12px}.result-download button{width:100%;min-width:0}.result-download .result-note{order:1}}
.modebar fieldset{background:var(--paper)}.modebar label>span{width:100%}.modebar span:not(.format){font-size:14px;min-height:44px}
@media(max-width:1100px){.editor-footer{grid-template-columns:minmax(160px,1fr) 220px;gap:18px}.editor-footer .time-fields{grid-column:1/-1;grid-row:2}.editor-footer .commands{grid-column:2;grid-row:1}.source-transport{grid-column:1;grid-row:1}}
@media(max-width:600px){.wave-workspace .wave{height:200px;min-height:200px}.source-seek{gap:8px;grid-template-columns:auto minmax(0,1fr)}.source-seek output{grid-column:2;text-align:right;font-size:12px}.editor-footer{grid-template-columns:minmax(0,1fr);gap:20px;padding-top:16px}.source-transport{grid-column:1;grid-row:1}.editor-footer .time-fields{grid-column:1;grid-row:2;grid-template-columns:repeat(2,minmax(0,1fr))}.editor-footer .time-fields label:nth-child(3){grid-column:1/-1}.editor-footer .commands{grid-column:1;grid-row:3;display:grid}.editor-footer .commands .primary{order:0}.editor-footer .commands>button:not(.primary){font-size:14px;min-height:50px}.source-seek input{min-height:44px}.modebar fieldset label{min-width:0;flex:1}.modebar span:not(.format){font-size:13px}.editor-footer .time-fields input,.editor-footer .time-fields output{font-size:15px}}
.circle svg:last-child{display:none}.circle[data-playing] svg:last-child{display:block}.circle[data-playing]:after{content:none}
@media(prefers-reduced-motion:no-preference){button{transition:background-color .15s,border-color .15s}.region{transition:background-color .2s}}