:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;color:#243240;background:#fff;color-scheme:light;--blue:#2457cc;--line:#cdd4dc;--muted:#526170;--green:#176448}
*{box-sizing:border-box}body,h1,h2,h3,p{margin:0}body{line-height:1.55}h1,h2,h3{line-height:1.25}h1{font-size:clamp(25px,3vw,34px)}h2{font-size:23px}h3{font-size:18px}p{color:var(--muted)}button,input,select{font:inherit;color:inherit}button{cursor:pointer}button:disabled{cursor:wait;opacity:.65}a{color:var(--blue);text-underline-offset:3px}a:hover{text-decoration-thickness:2px}img{display:block;max-width:100%}[hidden]{display:none!important}:focus-visible{outline:3px solid #173c91;outline-offset:3px}button,input,select,a{-webkit-tap-highlight-color:transparent}input,select{min-height:44px;min-width:0;width:100%;border:1px solid #8c99a7;border-radius:4px;padding:9px 10px;background:#fff}input[type=checkbox]{width:20px;height:20px;min-height:20px;accent-color:var(--blue);flex-shrink:0}input[type=range]{padding:0;accent-color:var(--blue)}input[type=color]{width:52px;height:44px;padding:3px}button{background:#fff;border:1px solid var(--line);border-radius:4px;min-height:44px;padding:8px 12px}.icon{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.wrap{max-width:1120px;margin:0 auto;padding:0 24px}.site-header{border-bottom:1px solid var(--line)}.header-inner{min-height:64px;display:flex;align-items:center;gap:32px}.brand{display:flex;align-items:center;gap:8px;font-size:21px;font-weight:700;text-decoration:none;color:#243240}.brand img{width:28px;height:28px}.brand-dot{display:none}.main-nav{display:flex;gap:22px;align-items:center;font-size:15px}.main-nav a{display:inline-flex;align-items:center;min-height:44px;color:#354759;text-decoration:none}.main-nav a[aria-current=page]{color:var(--blue);text-decoration:underline}.header-privacy{margin-left:auto;display:flex;gap:5px;align-items:center;font-size:13px;color:var(--green)}.header-privacy .icon{width:16px;height:16px}.hero{padding:24px 0 20px}.hero-description{margin-top:10px;max-width:850px}.breadcrumb{display:flex;gap:8px;margin:16px 0 0;font-size:14px}.page-hero{padding-top:16px}.tool-shell{border:1px solid var(--line);border-radius:5px;background:#fff}.tool-topbar{padding:10px 16px;border-bottom:1px solid var(--line);background:#f6f7f9}.tool-tabs{display:flex;gap:8px}.tool-tab{min-width:110px;background:#fff}.tool-tab[aria-selected=true],.format-choice[aria-pressed=true],.preset[aria-pressed=true]{background:#eaf0ff;border-color:var(--blue);color:#173f9e;font-weight:650}.tool-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(320px,1fr)}.upload-column{padding:20px;border-right:1px solid var(--line)}.dropzone{padding:24px 16px;min-height:210px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;border:2px dashed #93a2b2;background:#fafbfc;border-radius:4px}.dropzone.dragging{border-color:var(--blue);background:#edf2ff}.dropzone h2{font-size:21px}.dropzone p{margin-top:6px;font-size:15px}.dropzone .btn{margin-top:16px}.file-limit{font-size:13px;color:var(--muted);margin-top:12px;max-width:400px}.sample-row{margin-top:14px;display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:14px}.sample-button{font-size:14px}.settings-column{padding:20px}.settings-column h2{font-size:20px}.settings-column>#mode-caption{margin:5px 0 16px}.field{margin-bottom:16px}.field-title,.field-label{display:block;font-size:15px;font-weight:600;margin-bottom:6px}.field-title{display:flex;justify-content:space-between;gap:10px}.field-help{font-size:13px;color:var(--muted);line-height:1.5;margin-top:6px}.input-unit{display:flex;align-items:stretch}.input-unit input{border-radius:4px 0 0 4px}.input-unit>span{display:grid;place-items:center;min-width:50px;padding:8px;background:#f4f6f8;border:1px solid #8c99a7;border-left:0;border-radius:0 4px 4px 0}.preset-row,.format-row{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}.preset{font-size:13px;padding:6px 9px;flex:1}.format-choice{flex:1}.checkbox-label{display:flex;align-items:center;gap:9px;font-size:14px;min-height:44px}.color-label{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:15px}.dimension-row{display:flex;gap:12px}.dimension-row>label{flex:1;min-width:0}.dimension-input{display:flex;align-items:center;gap:6px}.dimension-input>span{color:var(--muted);font-size:14px}.advanced-toggle{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;margin-bottom:16px;font-size:14px;text-align:left}.advanced-panel{margin-bottom:16px}details summary{cursor:pointer;min-height:44px;padding:10px 0;font-size:14px;font-weight:600}#encoding-settings .field{padding-top:8px}.tool-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;border-top:1px solid var(--line);background:#fafbfc}.tool-note{font-size:13px;color:var(--muted)}.button-group{display:flex;gap:10px;align-items:center}.btn{display:inline-flex;gap:7px;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;font-size:15px;font-weight:600;text-decoration:none;border:1px solid var(--line);border-radius:4px;background:#fff;white-space:nowrap}.btn-primary{background:var(--blue);color:#fff;border-color:var(--blue)}.btn-primary:hover{background:#1d43a5;color:#fff}.btn-secondary{color:var(--blue)}.btn-text{color:var(--muted);background:#fff}.file-list{display:grid;gap:8px;margin-top:16px;max-height:240px;overflow:auto}.file-row{display:flex;gap:10px;align-items:center;padding:8px;border:1px solid var(--line);border-radius:4px}.file-meta{min-width:0;flex:1}.file-name{font-size:14px;font-weight:600;overflow-wrap:anywhere}.file-details{font-size:13px;color:var(--muted)}.file-placeholder{display:grid;place-items:center;width:32px;height:36px;color:var(--muted);flex-shrink:0}.remove-file{display:grid;place-items:center;min-width:44px;min-height:44px;padding:8px;color:#4d5c69}.notice{padding:12px 16px;margin:12px 0;background:#fff8e9;border:1px solid #bb8c30;color:#67440c;border-radius:4px;font-size:14px}.notice.error{border-color:#bc4a42;background:#fff3f2;color:#90261f}.tool-message{border-inline:0;border-radius:0;margin:0}.results{border-top:1px solid var(--line);padding:20px}.results-header{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px}.results-header h2{display:flex;align-items:center;gap:8px;font-size:21px}.results-summary{font-size:14px;margin-top:6px}.result-card{border:1px solid var(--line);border-radius:4px;margin-bottom:16px;overflow:hidden}.result-main{display:flex;align-items:center;gap:12px;padding:14px;flex-wrap:wrap}.result-thumb{width:60px;height:54px;object-fit:contain;background:repeating-conic-gradient(#e1e5e9 0 25%,white 0 50%) 0/12px 12px}.result-info{min-width:150px;flex:1}.result-name{font-size:14px;font-weight:650;overflow-wrap:anywhere}.result-stats{font-size:13px;color:var(--muted);margin-top:4px}.result-badge{font-size:13px;color:var(--green);background:#edf6f1;padding:5px 8px;border-radius:3px}.result-badge.warning{background:#fff3dc;color:#774c00}.result-card details{border-top:1px solid var(--line);padding:0 14px 10px}.comparison{display:grid;grid-template-columns:1fr 1fr;gap:12px}.comparison figure{margin:0;min-width:0}.comparison img{width:100%;height:200px;object-fit:contain;background:repeating-conic-gradient(#e1e5e9 0 25%,white 0 50%) 0/12px 12px}.comparison figcaption{font-size:13px;margin-top:5px}.section{padding:30px 0}.section h2{margin-bottom:16px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.section-heading h2{margin:0}.tool-help{max-width:820px;border-top:1px solid var(--line)}.tool-help h3{margin:24px 0 8px}.tool-help p{margin:0 0 12px}.tool-help ol{padding-left:22px}.tool-help li{margin-bottom:10px}.tool-directory ul{padding-left:22px;margin:0}.tool-directory li{padding:6px 0}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{display:block;padding:18px;border:1px solid var(--line);border-radius:4px;text-decoration:none;color:#243240}.card h3{margin-bottom:10px}.card p{font-size:15px}.card-link{display:flex;gap:5px;align-items:center;margin-top:14px;color:var(--blue);font-size:14px}.article{max-width:800px;padding:30px 0 45px;margin:auto;overflow-wrap:anywhere}.article h1{margin-bottom:16px}.article h2{margin:30px 0 12px}.article h3{margin:22px 0 10px}.article p,.article li{margin-bottom:12px}.article-meta,.eyebrow{font-size:14px;color:var(--muted);margin-bottom:14px}.article .lede{font-size:17px}.article table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}.article th,.article td{border:1px solid var(--line);padding:10px;text-align:left;overflow-wrap:normal}.article th{background:#f3f5f7}.article figure{margin:20px 0}.article figure img{max-height:300px;width:100%;object-fit:contain}.article figcaption{font-size:14px;margin-top:8px}.callout{background:#f3f6fc;border:1px solid var(--line);padding:18px;margin:24px 0}.site-footer{border-top:1px solid var(--line);margin-top:24px;padding-top:28px;background:#fafbfc}.footer-main{display:flex;justify-content:space-between;gap:32px;padding-bottom:24px}.footer-brand p{font-size:14px;margin-top:12px;max-width:230px}.footer-links{display:flex;gap:36px}.footer-links h3{font-size:15px;margin-bottom:10px}.footer-links a,.footer-links button{display:block;font-size:14px;padding:7px 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#b7c9fa;border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.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;top:-100px;left:10px;background:#fff;padding:10px;z-index:2}.skip-link:focus{top:10px}
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@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;scroll-behavior:auto!important;transition:none!important}}