:root{color-scheme:light;--ink:#163c36;--muted:#61736e;--line:#dce5e0;--paper:#f4f7f4;--accent:#dcff80;--green:#164e45}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"Segoe UI","Noto Sans JP",Meiryo,sans-serif;font-size:16px;line-height:1.7}button,input,select{font:inherit}button,a,input,select,summary{ -webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}a{color:inherit}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #498978;outline-offset:4px}.header{max-width:1280px;margin:auto;padding:26px 48px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:26px;font-weight:800;letter-spacing:-1px}.brand-icon{display:grid;place-items:center;background:var(--green);color:var(--accent);height:36px;width:36px;border-radius:10px;font-size:30px;line-height:1}.brand-note{font-size:11px;letter-spacing:2px;font-weight:500;margin-left:10px;color:var(--muted)}.preview-label{font-size:13px;padding:4px 12px;border:1px solid var(--line);border-radius:20px;color:var(--muted)}main{max-width:1184px;margin:auto;padding:40px 0 48px}.intro{position:relative;margin-bottom:32px}.eyebrow{font-size:12px;letter-spacing:1.5px;font-weight:700;color:var(--muted);margin:0 0 10px}h1{font-size:44px;letter-spacing:-1.8px;line-height:1.4;margin:0 0 12px;font-weight:750}h1 span{color:#438072}.intro>p:not(.eyebrow){margin:0;color:var(--muted);font-size:15px}.privacy-badge{position:absolute;right:0;bottom:4px;display:flex;align-items:center;gap:8px;padding:9px 14px;border-radius:8px;background:#e6efe7;font-size:13px;font-weight:600}.privacy-badge svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 330px;border:1px solid var(--line);background:white;border-radius:18px;overflow:hidden;box-shadow:0 8px 28px #15372f05}.files-panel{padding:28px;min-width:0}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:22px}h2{font-size:18px;font-weight:700;margin:0;display:flex;align-items:center;gap:10px}.step{font-size:12px;line-height:26px;width:26px;display:inline-block;text-align:center;border:1px solid var(--line);border-radius:50%;color:var(--muted);font-weight:500}.text-button{border:0;background:none;color:var(--muted);font-size:13px;text-decoration:underline}.dropzone{min-height:265px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:10px;border:1.5px dashed #acbdb5;border-radius:12px;background:#f9fbf8;cursor:pointer;position:relative;text-align:center;padding:25px 14px;transition:background .2s,border-color .2s}.dropzone:hover,.dropzone.dragover{border-color:var(--green);background:#eff7e9}.dropzone:focus-within{outline:3px solid #498978;outline-offset:3px}.dropzone input{position:absolute;width:1px;height:1px;opacity:0}.dropzone strong{font-size:18px;font-weight:650}.dropzone>span:not(.upload-icon){font-size:14px;color:var(--muted)}.file-button{color:var(--green);border-bottom:1px solid var(--green);font-weight:600}.dropzone small{font-size:12px;color:var(--muted);margin-top:5px}.upload-icon{width:60px;height:60px;margin-bottom:3px;display:grid;place-items:center;border-radius:16px;background:#e7eee5;transform:rotate(-6deg)}.upload-icon svg{width:40px;height:40px;fill:none;stroke:#50725e;stroke-width:1.8}.empty-note{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:13px;margin-top:20px}.empty-note>span{font-size:24px}.empty-note p{margin:0}.notice{font-size:14px;color:#93431d;margin:12px 0 0}.notice:empty{display:none}.settings-panel{background:#f9faf8;border-left:1px solid var(--line);padding:28px 24px}fieldset{border:0;padding:0;margin:23px 0 0;min-width:0}fieldset>label,.field-header label{font-size:14px;font-weight:650}select,.number-field{width:100%;border:1px solid #cfdcd3;border-radius:8px;background:white;color:var(--ink);margin-top:7px}select{padding:10px;font-size:14px}.field-header{display:flex;justify-content:space-between;align-items:center;margin-top:23px;gap:5px}.field-header>span{font-size:12px;color:var(--muted)}.number-field{display:flex;align-items:center;padding-right:12px}.number-field input{border:0;background:none;padding:9px 12px;width:100%;min-width:0;color:var(--ink)}.number-field span{font-size:13px;color:var(--muted)}.presets{display:flex;gap:6px;margin-top:9px}.presets button{flex:1;border:1px solid var(--line);border-radius:5px;background:white;color:var(--muted);font-size:12px;padding:4px}.presets button.active{background:#e8f2df;border-color:#abc692;color:var(--green)}.hint{font-size:12px;color:var(--muted);margin:9px 0}output{font-size:14px;font-weight:650}input[type=range]{width:100%;accent-color:var(--green);margin:12px 0 0}.range-labels{display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}.format-note{font-size:12px;color:var(--muted);margin:19px 0}.primary{border:0;border-radius:9px;background:var(--green);color:white;font-size:14px;font-weight:600;padding:13px 18px;display:flex;align-items:center;justify-content:center;gap:20px;transition:background .2s}.primary:hover:enabled{background:#226659}#convert{width:100%}#convert 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var(--line);margin-top:30px;padding-top:18px;font-size:13px;color:var(--muted)}summary{cursor:pointer}.privacy-details p{max-width:850px}footer{max-width:1280px;padding:24px 48px;margin:auto;border-top:1px solid var(--line);display:flex;align-items:center;gap:20px;font-size:12px;color:var(--muted)}footer .brand{font-size:20px;color:var(--ink)}footer>span:last-child{margin-left:auto}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}[hidden]{display:none!important}@media(min-width:1400px){main{padding-top:48px}}@media(max-width:1280px){main{margin:0 48px}}@media(max-width:900px){.workspace{grid-template-columns:minmax(0,1fr) 290px}.files-panel{padding:22px}.settings-panel{padding:22px 18px}.privacy-badge{position:static;width:fit-content;margin-top:18px}.guide{gap:20px}.result-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:680px){.header{padding:18px 20px}.brand-note{display:none}.preview-label{font-size:11px}main{margin:0 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