:root{color-scheme:light;--bg:#f4f6f4;--panel:#fff;--text:#192d29;--muted:#586b65;--line:#d8e1dc;--soft:#edf3ef;--accent:#12684f;--accent-hover:#0b513e;--on-accent:#fff;--warn:#85400e;--warning-bg:#fff5e8;--shadow:0 6px 28px #183a2710;font-family:Inter,"Segoe UI",Arial,sans-serif;font-synthesis:none}
:root[data-theme=dark]{color-scheme:dark;--bg:#101b18;--panel:#182721;--text:#edf5f0;--muted:#b0c3b9;--line:#3b5146;--soft:#22372d;--accent:#87dfb7;--accent-hover:#abebcd;--on-accent:#10251b;--warn:#ffcb91;--warning-bg:#3c2b1c;--shadow:none}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-size:14px;line-height:1.55}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,p{margin:0}h1{font-size:clamp(28px,3.2vw,40px);line-height:1.2;letter-spacing:-1.4px;font-weight:650}h2{font-size:16px;font-weight:650}h3{font-size:16px;font-weight:650}.shell{width:min(1260px,calc(100% - 64px));margin-inline:auto}header{border-bottom:1px solid var(--line);background:var(--panel)}.nav{display:flex;align-items:center;justify-content:space-between;min-height:78px}.brand{display:flex;align-items:center;gap:11px;color:var(--text);font-size:22px;font-weight:700;letter-spacing:-.7px}.brand:hover{text-decoration:none}.brandmark{width:35px;height:35px;display:grid;place-items:center;background:var(--accent);color:var(--on-accent);border-radius:10px;font-size:23px;position:relative}.brandmark>span{position:absolute;inset-inline-end:-5px;top:-8px;border:2px solid var(--panel);font-size:13px;line-height:18px;background:var(--accent);border-radius:50%;width:20px;text-align:center}.beta{font-size:9px;letter-spacing:1px;border:1px solid var(--line);border-radius:4px;padding:2px 5px;margin-inline-start:4px;color:var(--muted)}.nav-end{display:flex;align-items:center;gap:26px}.nav-end>a{font-size:13px;color:var(--muted)}.quiet{border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:8px;padding:8px 12px;font-size:12px;min-height:38px}.quiet:hover{background:var(--soft)}.intro{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-block:35px 29px}.eyebrow{font-size:10px;letter-spacing:1.7px;font-weight:750;color:var(--accent);margin-bottom:10px}.intro .muted{margin-top:10px}.muted,.hint{color:var(--muted)}.privacy-pill{white-space:nowrap;border:1px solid var(--line);background:var(--soft);padding:8px 13px;border-radius:30px;color:var(--accent);font-size:12px}.privacy-pill span{font-size:9px;margin-inline-end:6px}.workspace{display:grid;grid-template-columns:354px minmax(0,1fr);gap:22px;align-items:start}.panel{border:1px solid var(--line);background:var(--panel);border-radius:15px;box-shadow:var(--shadow)}.controls{padding:23px}.step{display:inline-grid;place-items:center;width:24px;height:24px;background:var(--soft);border:1px solid var(--line);border-radius:7px;color:var(--accent);font-size:10px;margin-inline-end:8px;vertical-align:middle}.dropzone{width:100%;display:flex;flex-direction:column;align-items:center;gap:3px;border:1px dashed var(--accent);border-radius:10px;background:var(--soft);color:var(--text);padding:19px 10px;margin-top:18px}.dropzone:hover,.dropzone.dragging{outline:2px solid var(--accent);outline-offset:2px}.upload{color:var(--accent);font-size:29px;line-height:1.2;margin-bottom:5px}.dropzone strong{font-size:14px}.dropzone span:not(.upload){font-size:12px;color:var(--muted)}.dropzone b{color:var(--accent)}.dropzone small{font-size:10px;color:var(--muted);margin-top:8px}.hint{font-size:11px;line-height:1.6}.controls section>.hint{margin-block:11px 20px}fieldset{border:0;border-top:1px solid var(--line);margin:0;padding:20px 0 0;min-width:0}legend{float:inline-start;font-size:16px;font-weight:650;width:100%;padding:0;margin-bottom:18px}fieldset>label,.two label{display:block;font-size:12px;font-weight:600;margin-bottom:6px}select,input[type=number]{width:100%;border:1px solid var(--line);color:var(--text);background:var(--panel);border-radius:7px;height:40px;padding-inline:10px;min-width:0}select{font-size:12px}input:disabled{background:var(--soft);color:var(--muted)}.two{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-block:14px 7px}.controls fieldset>.hint{margin-block:7px 15px}.quality-head{display:flex;justify-content:space-between;align-items:center;font-size:12px;font-weight:600}.quality-head output{color:var(--accent)}input[type=range]{accent-color:var(--accent);width:100%;margin-block:12px 0}.check{display:flex!important;gap:8px;align-items:center;margin-top:15px}input[type=checkbox]{accent-color:var(--accent);width:16px;height:16px;margin:0}.primary{border:0;border-radius:8px;background:var(--accent);color:var(--on-accent);font-weight:650;padding:12px 16px;min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:16px}.primary:hover{background:var(--accent-hover)}.controls>.primary{width:100%;margin-top:20px}button:disabled{cursor:not-allowed;opacity:.5}.actions{display:flex;gap:8px;justify-content:center;margin-top:10px}.actions .quiet{border-color:transparent}.limits{border-top:1px solid var(--line);padding-top:13px;margin-top:12px;font-size:10px}.results{padding:23px;min-width:0;position:sticky;top:16px}.results-header{display:flex;align-items:center;justify-content:space-between;gap:8px}.badge{border:1px solid var(--line);border-radius:20px;background:var(--soft);padding:3px 10px;font-size:11px;color:var(--muted);white-space:nowrap}.empty{min-height:500px;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center}.empty-icon{color:var(--accent);font-size:62px;line-height:1;background:var(--soft);border:1px solid var(--line);border-radius:20px;width:108px;height:108px;display:grid;place-items:center;margin-bottom:24px;transform:rotate(-6deg)}.empty h3{font-size:20px;letter-spacing:-.4px}.empty p{color:var(--muted);font-size:13px;line-height:1.8;margin-top:10px}.empty-note{font-size:11px;color:var(--muted);margin-top:23px}.message{font-size:12px;line-height:1.7;color:var(--muted);overflow-wrap:anywhere}.message:not(:empty){padding:12px;border:1px solid var(--line);background:var(--soft);border-radius:8px;margin-top:16px}.message.error,.warning{color:var(--warn);background:var(--warning-bg)}#progressWrap{margin-top:20px}.progress-label{display:flex;justify-content:space-between;color:var(--muted);font-size:12px}progress{width:100%;accent-color:var(--accent);height:8px}.checker{background-color:var(--soft);background-image:linear-gradient(45deg,#78938419 25%,transparent 25%),linear-gradient(-45deg,#78938419 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#78938419 75%),linear-gradient(-45deg,transparent 75%,#78938419 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0}.preview{height:350px;display:flex;justify-content:center;align-items:center;border:1px solid var(--line);border-radius:10px;margin-top:18px;padding:14px}.preview img{max-height:100%;max-width:100%;object-fit:contain;box-shadow:0 3px 15px #0002}.preview-caption{display:flex;justify-content:space-between;gap:12px;font-size:11px;margin-top:12px}.preview-caption strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:65%}.preview-caption a{white-space:nowrap}#applied{margin-top:7px}.result-list{display:flex;flex-direction:column;gap:8px;max-height:330px;overflow:auto;margin-top:18px}.result-row{border:1px solid var(--line);border-radius:9px;padding:9px;display:flex;align-items:center;gap:12px;min-width:0}.result-row.active{border-color:var(--accent);background:var(--soft)}.thumb{background:transparent;border:0;padding:0;flex-shrink:0;position:relative;color:var(--accent)}.thumb img{display:block;width:54px;height:54px;object-fit:contain;border-radius:4px;background:var(--soft)}.thumb span{font-size:9px;display:block}.result-meta{min-width:0;flex:1}.result-meta strong{font-size:12px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;display:block}.result-meta small{font-size:10px;display:block;color:var(--muted)}.result-meta .savings{color:var(--accent)}.result-meta .increase{color:var(--warn)}.file-download{font-size:11px;padding:9px;background:var(--soft);border-radius:6px;white-space:nowrap}.result-error{font-size:12px;color:var(--warn);background:var(--warning-bg);overflow-wrap:anywhere}.downloadbar{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);gap:16px;margin-top:20px;padding-top:20px}.downloadbar .primary{font-size:12px;white-space:nowrap}.guide{display:grid;grid-template-columns:1.25fr 1fr 1fr 1fr;gap:30px;padding-block:43px;border-bottom:1px solid var(--line);margin-top:15px}.guide h2{font-size:23px;letter-spacing:-.7px}.guide h3{font-size:13px;margin-bottom:8px}.guide p:not(.eyebrow){font-size:12px;line-height:1.8;color:var(--muted);margin-top:8px}footer{display:flex;justify-content:space-between;padding-block:25px;font-size:11px}footer a{color:var(--muted)}:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.skip{position:absolute;inset-inline-start:16px;top:-100px;padding:10px;background:var(--panel);z-index:5}.skip:focus{top:8px}[hidden]{display:none!important}@media(max-width:980px){.shell{width:calc(100% - 36px)}.workspace{grid-template-columns:320px minmax(0,1fr);gap:16px}.controls,.results{padding:18px}.guide{grid-template-columns:1fr 1fr}.privacy-pill{display:none}.preview{height:280px}.downloadbar{flex-direction:column;align-items:stretch}.downloadbar .primary{justify-content:center}}@media(max-width:700px){.shell{width:calc(100% - 28px)}.nav{min-height:66px}.brand{font-size:20px}.nav-end{gap:10px}.nav-end>a{display:none}.intro{padding-block:27px 23px}.intro .muted{font-size:13px;max-width:300px}.workspace{grid-template-columns:1fr}.results{position:static}.empty{min-height:280px}.guide{gap:24px;grid-template-columns:1fr 1fr}.guide>div:first-child{grid-column:1/-1}.preview{height:310px}.downloadbar{flex-direction:row;align-items:center}.downloadbar .hint{max-width:48%}footer{gap:20px}.controls section>.hint{margin-bottom:15px}}@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}

/* Language controls and bidirectional layout. Brand names and file statistics remain LTR. */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.language-control{display:flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:8px;background:var(--panel);padding-inline-start:10px;min-width:0}
.language-icon{color:var(--accent);font-size:19px;line-height:1}.language-control select{border:0;width:160px;max-width:100%;font-size:12px;height:38px;background:transparent;padding-inline-start:2px}.language-control:focus-within{outline:3px solid var(--accent);outline-offset:3px}.language-control select:focus-visible{outline:none}.brand{direction:ltr;unicode-bidi:isolate}.preview-caption strong{unicode-bidi:plaintext}.file-stats{unicode-bidi:isolate;text-align:start}.result-meta strong{unicode-bidi:plaintext}.result-error{display:block}.result-error bdi{font-weight:600}.progress-label,#progressText{unicode-bidi:isolate}#progressText{direction:ltr}#applied{overflow-wrap:anywhere}.empty p{max-width:340px}.empty h3{max-width:100%}.file-download{white-space:normal;text-align:center;max-width:30%;overflow-wrap:anywhere}.preview-caption{flex-wrap:wrap}.preview-caption strong{max-width:100%}.nav-end{gap:18px}.primary{overflow-wrap:anywhere}.nav .quiet{white-space:nowrap}
html[dir=rtl] h1,html[dir=rtl] .eyebrow,html[lang=ja] h1,html[lang=zh-CN] h1{letter-spacing:normal}html[dir=rtl] .controls>.primary>span[aria-hidden=true]{transform:scaleX(-1)}html[dir=rtl] .preview-caption strong{text-align:start}
@media(max-width:700px){.nav{flex-wrap:wrap;gap:12px;padding-block:13px}.nav-end{width:100%;justify-content:space-between;gap:12px}.language-control{flex:1;max-width:230px}.language-control select{width:100%}.downloadbar{flex-wrap:wrap}.downloadbar .hint{max-width:100%}.downloadbar .primary{white-space:normal}.guide{grid-template-columns:1fr}.guide>div:first-child{grid-column:auto}.formgrid{min-width:0}}