:root{--paper: #ffffff;--surface: #f6f6f6;--ink: #0a0a0a;--ink-2: #3a3a3a;--muted: #525252;--line: #e4e4e4;--line-strong: #0a0a0a;--field-border: #6e6e6e;--focus: #0a0a0a;--font: "Helvetica Neue", Helvetica, Arial, system-ui, -apple-system, sans-serif;--mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;--maxw: 920px;--radius: 4px}*{box-sizing:border-box}[hidden]{display:none!important}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}:where(a,button,input,[tabindex],output):focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:var(--radius)}input,select,textarea{font:inherit}.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}.skip-link{position:absolute;left:12px;top:-60px;z-index:10;background:var(--ink);color:var(--paper);padding:10px 16px;font-weight:700;text-decoration:none;transition:top .15s ease}.skip-link:focus{top:12px}.topbar{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 28px;border-bottom:1px solid var(--line-strong)}.brand{display:flex;align-items:baseline;gap:8px;font-size:20px;font-weight:800;letter-spacing:-.02em}.brand .logo{font-size:18px}.brand .byline{font-weight:500;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.privacy-note{display:inline-flex;align-items:center;gap:8px;margin:0;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink)}.privacy-note .dot{width:7px;height:7px;border-radius:50%;background:var(--ink)}main{max-width:var(--maxw);margin:0 auto;padding:56px 24px 96px}.eyebrow{margin:0 0 14px;font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}.hero h1{font-size:clamp(34px,6vw,56px);line-height:1.02;letter-spacing:-.03em;font-weight:800;margin:0 0 16px}.hero .lede{max-width:56ch;font-size:17px;color:var(--ink-2);margin:0 0 40px}.controls{display:flex;gap:24px 32px;align-items:flex-start;flex-wrap:wrap;border:1px solid var(--line-strong);border-radius:var(--radius);padding:22px 24px;margin-bottom:24px}@media(min-width:720px){.controls{display:grid;grid-template-columns:1fr 1fr;align-items:start;column-gap:40px;row-gap:22px}.control--format{grid-column:1 / -1}#downloadAll{grid-column:2;justify-self:end;align-self:end;margin-left:0}}.control{display:flex;flex-direction:column;gap:10px}.control label{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}.range-row{display:flex;align-items:center;gap:14px}input[type=range]{width:200px;height:24px;-webkit-appearance:none;appearance:none;background:transparent;cursor:pointer}input[type=range]::-webkit-slider-runnable-track{height:4px;background:var(--field-border);border-radius:2px}input[type=range]::-moz-range-track{height:4px;background:var(--field-border);border-radius:2px}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;margin-top:-10px;border-radius:50%;background:var(--ink)}input[type=range]::-moz-range-thumb{width:24px;height:24px;border:0;border-radius:50%;background:var(--ink)}@media(forced-colors:active){input[type=range]::-webkit-slider-runnable-track,input[type=range]::-moz-range-track{background:CanvasText}input[type=range]::-webkit-slider-thumb,input[type=range]::-moz-range-thumb{background:ButtonText}input[type=range]:focus-visible{outline-color:Highlight}}#qualityVal{font-family:var(--mono);font-size:15px;font-weight:700;min-width:2.5ch;text-align:right}.control--inline{flex-direction:row;align-items:center;gap:10px;min-height:32px}.control--inline input[type=checkbox]{width:18px;height:18px;accent-color:var(--ink)}.control--inline label{display:inline-flex;align-items:center;min-height:32px;text-transform:none;letter-spacing:0;font-size:14px;font-weight:500;color:var(--ink)}#downloadAll{margin-left:auto}.btn{font:inherit;font-size:13px;font-weight:700;letter-spacing:.04em;cursor:pointer;padding:11px 20px;border:1.5px solid var(--ink);border-radius:var(--radius);background:var(--paper);color:var(--ink);transition:background .15s ease,color .15s ease}.btn:hover,.btn--primary{background:var(--ink);color:var(--paper)}.btn--primary:hover{background:var(--paper);color:var(--ink)}.btn:disabled{border-color:var(--line);background:var(--paper);color:var(--muted);cursor:not-allowed;opacity:1}.dropzone{border:2px dashed var(--ink);border-radius:var(--radius);padding:56px 24px;text-align:center;background:var(--paper);transition:background .15s ease}.dropzone.drag{border-style:solid;background:var(--surface)}.dz-title{font-size:22px;font-weight:800;letter-spacing:-.02em;margin:0 0 6px}.dz-sub{color:var(--muted);margin:10px 0;font-size:14px}.results{margin-top:36px}.results-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}.card{border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px}.card-row{display:grid;grid-template-columns:56px 1fr auto auto;gap:18px;align-items:center}.thumb{width:56px;height:56px;object-fit:cover;border:1px solid var(--line);border-radius:2px;background:var(--surface)}.meta{min-width:0;display:flex;flex-direction:column;gap:4px}.name{font-size:14px;font-weight:600;word-break:break-all}.status{font-family:var(--mono);font-size:12px;color:var(--muted)}.detail{font-family:var(--mono);font-size:11px;letter-spacing:.02em;color:var(--muted)}.actions{display:flex;align-items:center;gap:8px}.savings{display:inline-flex;align-items:center;gap:4px;font-family:var(--mono);font-size:12px;font-weight:700;white-space:nowrap;padding:5px 10px;border-radius:999px;border:1.5px solid var(--ink);background:var(--ink);color:var(--paper)}.savings--bad{background:var(--paper);color:var(--ink)}.savings--pending{background:var(--paper);color:var(--muted);border-color:var(--line);font-weight:500}.savings .arrow{font-size:10px;line-height:1}.dl-link,.btn-mini{font:inherit;font-size:13px;font-weight:700;letter-spacing:.03em;text-decoration:none;color:var(--ink);background:var(--paper);border:1.5px solid var(--ink);border-radius:var(--radius);padding:8px 14px;min-height:36px;display:inline-flex;align-items:center;cursor:pointer;transition:background .15s ease,color .15s ease}.dl-link:hover,.btn-mini:hover{background:var(--ink);color:var(--paper)}.btn-icon{font:inherit;font-size:18px;font-weight:700;line-height:1;cursor:pointer;width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;color:var(--ink);background:var(--paper);border:1.5px solid var(--ink);border-radius:var(--radius);transition:background .15s ease,color .15s ease}.btn-icon:hover,[aria-pressed=true].btn-mini,[aria-pressed=true].theme-toggle{background:var(--ink);color:var(--paper)}.footer{display:flex;flex-wrap:wrap;gap:12px 20px;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px;letter-spacing:.04em;padding:22px 28px;border-top:1px solid var(--line-strong)}.footer-text{flex:1 1 auto}.theme-toggle{font:inherit;font-size:12px;font-weight:700;letter-spacing:.04em;cursor:pointer;display:inline-flex;align-items:center;gap:8px;min-height:36px;padding:8px 14px;color:var(--ink);background:var(--paper);border:1.5px solid var(--ink);border-radius:var(--radius);transition:background .15s ease,color .15s ease}.theme-toggle:hover{background:var(--ink);color:var(--paper)}.theme-glyph{font-size:14px;line-height:1}.control--format{border:0;margin:0;padding:0;min-width:0}.control--format legend{padding:0;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}.radio-set{display:flex;flex-wrap:wrap;gap:4px 14px;margin-top:8px}.radio{display:inline-flex;align-items:center;gap:8px;min-height:44px;font-size:14px;cursor:pointer}.radio input[type=radio]{width:18px;height:18px;accent-color:var(--ink)}.control-hint{margin:6px 0 0;max-width:34ch;font-size:12px;line-height:1.4;color:var(--muted)}.control-warn{margin:8px 0 0;display:flex;align-items:center;gap:6px;font-size:12px;font-weight:700;color:var(--ink)}.warn-glyph{font-size:14px}.num-field{width:90px;font:inherit;font-family:var(--mono);font-size:15px;padding:7px 10px;color:var(--ink);background:var(--paper);border:1.5px solid var(--field-border);border-radius:var(--radius)}.num-field[aria-invalid=true]{border-color:var(--ink);border-width:2px}.num-unit{font-family:var(--mono);font-size:13px;color:var(--muted)}.control--optimizer{gap:8px}.ssim-group{margin-top:4px;padding-left:28px}#ssimVal{font-family:var(--mono);font-size:15px;font-weight:700;min-width:3.5ch;text-align:right}.curve{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);display:grid;gap:16px}@media(min-width:720px){.curve{grid-template-columns:minmax(0,440px) 1fr;align-items:start}}.curve-svg{width:100%;height:auto;max-width:440px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}.curve-axis{fill:none;stroke:var(--field-border);stroke-width:1}.curve-axislabel{fill:var(--muted);font-size:11px;font-family:var(--mono)}.curve-line{fill:none;stroke:var(--ink);stroke-width:1.5}.curve-pt{fill:var(--paper);stroke:var(--ink);stroke-width:1.5}.curve-pt.is-recommended{fill:var(--ink)}.curve-pt.is-selected{fill:var(--ink);stroke:var(--ink);stroke-width:3}.curve-table{border-collapse:collapse;width:100%;font-size:13px}.curve-table caption{text-align:left;font-size:12px;color:var(--muted);margin-bottom:8px}.curve-table th,.curve-table td{text-align:left;padding:7px 10px;border-bottom:1px solid var(--line);font-weight:400}.curve-table thead th{font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);border-bottom:1.5px solid var(--line-strong)}.curve-table tbody th{font-family:var(--mono);font-weight:700}.curve-table .savings{border:0;background:none;padding:0;color:inherit;font-weight:700}.curve-table tr.is-selected{background:var(--surface)}.curve-table tr.is-selected td,.curve-table tr.is-selected th{border-bottom-color:var(--line-strong)}.badge{display:inline-block;font-size:10px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:2px 6px;border:1px solid var(--ink);border-radius:999px}.curve-table input[type=radio]{width:18px;height:18px;accent-color:var(--ink)}.cmp{width:min(960px,94vw);max-height:92vh;padding:0;border:1.5px solid var(--ink);border-radius:var(--radius);background:var(--paper);color:var(--ink);overflow:hidden}.cmp::backdrop{background:#0a0a0a99}.cmp-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;border-bottom:1px solid var(--line-strong)}.cmp-head h2{margin:0;font-size:18px;font-weight:800;letter-spacing:-.02em}.cmp-summary{margin:0;padding:12px 20px;font-size:13px;line-height:1.5;color:var(--ink-2);background:var(--surface);border-bottom:1px solid var(--line)}.cmp-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:12px 20px}.cmp-tool-sep{flex:1 1 auto}.cmp-zoom{font-family:var(--mono);font-size:13px;min-width:4ch;text-align:center}.cmp-stage{padding:0 20px}.cmp-viewport{position:relative;width:100%;height:min(56vh,520px);overflow:hidden;background:repeating-conic-gradient(var(--surface) 0% 25%,var(--paper) 0% 50%) 50% / 24px 24px;border:1px solid var(--line);border-radius:var(--radius)}.cmp-pan{position:absolute;inset:0;transform-origin:center center}.cmp-pair{position:relative;width:100%;height:100%;--reveal: 50%}.cmp-pair figure{position:absolute;inset:0;margin:0}.cmp-img{width:100%;height:100%;object-fit:contain;display:block}.cmp-pair figcaption{position:absolute;bottom:6px;left:6px;font-size:11px;font-weight:700;padding:3px 7px;background:var(--ink);color:var(--paper);border-radius:3px;opacity:0}.cmp-comp-fig{clip-path:inset(0 var(--reveal) 0 0)}.cmp-comp-fig figcaption{left:auto;right:6px}.cmp-divider{position:absolute;top:0;bottom:0;left:50%;width:2px;margin-left:-1px;background:var(--ink);box-shadow:0 0 0 1px var(--paper);pointer-events:none}.cmp-diff{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}.cmp-pair.is-side{display:grid;grid-template-columns:1fr 1fr;gap:8px}.cmp-pair.is-side figure{position:static}.cmp-pair.is-side .cmp-comp-fig{clip-path:none}.cmp-pair.is-side figcaption{opacity:1}.cmp-pair.is-side~.cmp-divider,.cmp-pair.is-side .cmp-divider{display:none}.cmp-pair.is-diff .cmp-orig-fig,.cmp-pair.is-diff .cmp-comp-fig{opacity:0}.cmp-sliderrow{padding:16px 20px 22px}.cmp-sliderrow input[type=range]{width:100%}.cmp-sliderrow input[type=range]:disabled{opacity:.4}@media(max-width:560px){.topbar{flex-direction:column;align-items:flex-start;gap:8px}.controls{gap:20px}#downloadAll{margin-left:0;width:100%}.card-row{grid-template-columns:44px 1fr;row-gap:10px}.thumb{width:44px;height:44px}.savings,.actions{grid-column:2;justify-self:start}}@media(prefers-reduced-motion:reduce){*,.skip-link,.btn,.dropzone,.dl-link,.btn-mini,.btn-icon,.theme-toggle,.cmp-pan{transition:none!important}}:root[data-theme=dark]{--paper: #121212;--surface: #1d1d1d;--ink: #f4f4f4;--ink-2: #d0d0d0;--muted: #a8a8a8;--line: #333333;--line-strong: #f4f4f4;--field-border: #8a8a8a;--focus: #f4f4f4}:root[data-theme=dark] .cmp::backdrop{background:#000000b3}.status-badge{display:inline-block;font-family:var(--mono);font-size:10px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:2px 7px;border-radius:999px;border:1px solid var(--field-border);color:var(--muted);background:transparent}.status-badge[data-status=compressing]{border-color:var(--field-border);color:var(--muted)}.status-badge[data-status=done]{border-color:var(--ink);background:var(--ink);color:var(--paper)}.status-badge[data-status=error]{border-color:var(--ink);color:var(--ink);background:transparent}@media(forced-colors:active){.status-badge[data-status=done]{background:Highlight;color:HighlightText;border-color:Highlight}.status-badge[data-status=error]{border-color:ButtonText;color:ButtonText}}#batch-progress{margin:24px 0 16px;display:flex;flex-direction:column;gap:10px}.progress-bar-wrap{display:flex;align-items:center;gap:14px}[role=progressbar]{flex:1;height:8px;background:var(--surface);border:1px solid var(--line);border-radius:999px;overflow:hidden;position:relative}.progress-fill{height:100%;background:var(--ink);border-radius:999px;width:0%;transition:width .3s ease}@media(forced-colors:active){[role=progressbar]{border-color:ButtonText;background:Canvas}.progress-fill{background:Highlight}}@media(prefers-reduced-motion:reduce){.progress-fill{transition:none!important}}.progress-label{font-family:var(--mono);font-size:12px;color:var(--muted);white-space:nowrap;margin:0;min-width:6ch}.aggregate-savings{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--ink);margin:0}.presets-section{border:1px solid var(--line-strong);border-radius:var(--radius);padding:18px 24px;margin-bottom:24px}.presets-header{display:flex;align-items:center;justify-content:space-between;gap:16px}.presets-header h2{margin:0;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}#presetsPanel{margin-top:18px;display:flex;flex-direction:column;gap:16px}.presets-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.preset-empty{font-size:14px;color:var(--muted);padding:10px 0}.preset-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius);flex-wrap:wrap}.preset-info{display:flex;flex-direction:column;gap:3px;min-width:0}.preset-name{font-size:14px;font-weight:600}.preset-meta{font-family:var(--mono);font-size:11px;color:var(--muted)}.preset-actions{display:flex;align-items:center;gap:6px;flex-wrap:wrap;flex-shrink:0}.btn-mini--danger{border-color:var(--field-border);color:var(--muted)}.btn-mini--danger:hover{border-color:var(--ink);color:var(--paper);background:var(--ink)}.presets-toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.preset-dialog,.delete-dialog{border:1.5px solid var(--ink);border-radius:var(--radius);background:var(--paper);color:var(--ink);padding:0;width:min(560px,94vw);max-height:90vh;overflow-y:auto}.preset-dialog::backdrop,.delete-dialog::backdrop{background:#0a0a0a8c}:root[data-theme=dark] .preset-dialog::backdrop,:root[data-theme=dark] .delete-dialog::backdrop{background:#000000b3}.dialog-head{padding:20px 24px 16px;border-bottom:1px solid var(--line);margin-bottom:0}.preset-dialog h2,.delete-dialog h2{margin:0;font-size:18px;font-weight:800;letter-spacing:-.02em}#presetForm,.delete-dialog>p{padding:20px 24px}.delete-dialog>p{font-size:15px;margin:0;color:var(--ink-2)}.form-required-note{margin:0 0 18px;font-size:12px;color:var(--muted)}.required-star{color:var(--ink)}.form-field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}.form-field label{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}.form-field input[type=text],.form-field input[type=number]{font:inherit;font-family:var(--mono);font-size:15px;padding:9px 12px;color:var(--ink);background:var(--paper);border:1.5px solid var(--field-border);border-radius:var(--radius);width:100%}.form-field input[type=text]:focus-visible,.form-field input[type=number]:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.form-field input[aria-invalid=true]{border-color:var(--ink);border-width:2px}.preset-format-group{margin-bottom:18px}.dialog-actions{display:flex;align-items:center;gap:10px;padding:16px 24px 20px;border-top:1px solid var(--line);flex-wrap:wrap}#filename-pattern-group{grid-column:1 / -1}@media(max-width:560px){.presets-header,.preset-row{flex-direction:column;align-items:flex-start}.preset-actions{width:100%}.presets-toolbar{flex-direction:column;align-items:flex-start}.dialog-actions{flex-direction:column;align-items:stretch}.dialog-actions .btn{width:100%;justify-content:center}}:root[data-theme=dark]{--paper: #23262d;--surface: #262a32;--ink: #eceef2;--ink-2: #cdd1d8;--muted: #a9aeb8;--line: #31353e;--line-strong: #eceef2;--field-border: #8b919d;--focus: #eceef2;--neu-raise: 6px 6px 12px rgba(0, 0, 0, .55), -4px -4px 10px rgba(255, 255, 255, .05);--neu-raise-sm: 3px 3px 7px rgba(0, 0, 0, .5), -2px -2px 5px rgba(255, 255, 255, .05);--neu-inset: inset 4px 4px 8px rgba(0, 0, 0, .5), inset -3px -3px 7px rgba(255, 255, 255, .04);--neu-inset-sm: inset 2px 2px 5px rgba(0, 0, 0, .5), inset -2px -2px 4px rgba(255, 255, 255, .04);--radius: 12px}:root[data-theme=dark] .card,:root[data-theme=dark] .presets-section,:root[data-theme=dark] .batch{border-color:transparent;background:linear-gradient(145deg,#272b33,#22252c);box-shadow:var(--neu-raise)}:root[data-theme=dark] .dropzone{border:2px dashed var(--field-border);background:var(--paper);box-shadow:var(--neu-inset)}:root[data-theme=dark] .dropzone.drag{border-style:solid;border-color:var(--ink);background:var(--surface)}:root[data-theme=dark] input[type=text],:root[data-theme=dark] input[type=number],:root[data-theme=dark] select{border-color:transparent;background:var(--paper);box-shadow:var(--neu-inset-sm)}:root[data-theme=dark] .btn,:root[data-theme=dark] .btn-mini,:root[data-theme=dark] .btn-icon,:root[data-theme=dark] .dl-link,:root[data-theme=dark] .theme-toggle{border-color:transparent;background:linear-gradient(145deg,#282c34,#22252c);box-shadow:var(--neu-raise-sm)}:root[data-theme=dark] .btn:active,:root[data-theme=dark] .btn-mini:active,:root[data-theme=dark] .btn-icon:active,:root[data-theme=dark] .dl-link:active,:root[data-theme=dark] .theme-toggle:active{box-shadow:var(--neu-inset-sm)}:root[data-theme=dark] .btn--primary{background:var(--ink);color:#1b1e24}:root[data-theme=dark] .btn:disabled{background:var(--paper);box-shadow:none;border-color:var(--line)}:root[data-theme=dark] input[type=range]{background:transparent}:root[data-theme=dark] input[type=range]::-webkit-slider-runnable-track{background:var(--paper);border-radius:999px;box-shadow:var(--neu-inset-sm)}:root[data-theme=dark] input[type=range]::-moz-range-track{background:var(--paper);border-radius:999px;box-shadow:var(--neu-inset-sm)}:root[data-theme=dark] .status-badge{border-color:transparent;box-shadow:var(--neu-raise-sm);border-radius:999px}:root[data-theme=dark] .cmp{background:var(--paper);box-shadow:var(--neu-raise)}:root[data-theme=dark] .cmp::backdrop{background:#0a0c10bf}:root[data-theme=dark] .controls{border-color:transparent;background:linear-gradient(145deg,#272b33,#22252c);box-shadow:var(--neu-raise)}:root[data-theme=dark] .theme-toggle,:root[data-theme=dark] #installBtn{color:var(--ink)}.thumb--video{display:inline-flex;align-items:center;justify-content:center;font-size:20px;background:var(--surface);color:var(--muted);border-radius:var(--radius)}:root[data-theme=dark] .thumb--video{box-shadow:var(--neu-inset-sm)}.hero{margin:28px 0 20px}.hero h1{font-size:clamp(28px,4.5vw,40px);margin:4px 0 8px}.hero .lede{max-width:60ch;margin:0}.controls{padding:18px 20px;margin-bottom:16px}.dropzone{padding:34px 20px}.results{margin-top:24px}@media(min-width:720px){.controls{row-gap:16px}}#video-preset-group .control-hint{max-width:70ch}