:root{--bg:#eef2f6;--surface:#fff;--ink:#18283e;--muted:#5e6e82;--blue:#2459d3;--line:#dce3ec;--soft:#f7f9fc;font-family:-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button,a,select{touch-action:manipulation}button{cursor:pointer}a{color:inherit}button:disabled,select:disabled{cursor:not-allowed;opacity:.5}[hidden]{display:none!important}:focus-visible{outline:3px solid #88aafb;outline-offset:4px}.skip{position:absolute;top:-60px;left:20px;padding:12px;background:white;z-index:5}.skip:focus{top:10px}
.header{height:80px;max-width:1440px;padding:0 48px;margin:auto;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;font-size:21px;font-weight:800;text-decoration:none;letter-spacing:-.8px}.brand-mark{background:var(--blue);color:white;border-radius:9px;display:grid;place-items:center;width:33px;height:33px;font-size:26px;line-height:1}.header-links{display:flex;align-items:center;gap:28px;font-size:13px}.header-links a{text-decoration:none}.preview-badge{border:1px solid #ccd7e4;border-radius:5px;padding:6px 9px;color:var(--muted);font-size:11px}
main{max-width:1440px;margin:auto;padding:0 48px}.intro{padding:40px 0 30px;display:flex;align-items:center;justify-content:space-between;gap:20px}.eyebrow{color:var(--blue);font-size:12px;font-weight:700;letter-spacing:.3px;margin:0 0 10px}h1{font-size:clamp(26px,2.6vw,38px);letter-spacing:-1.8px;line-height:1.25;margin:0;font-weight:750}.lead{font-size:14px;color:var(--muted);margin:13px 0 0;line-height:1.6}.mobile-break{display:none}.privacy-note{font-size:12px;color:var(--ink);line-height:1.9;flex-shrink:0;margin:0}.privacy-note span{color:#267668;margin-right:5px}.privacy-note small{color:var(--muted);font-size:11px;padding-left:18px}
.workspace{display:grid;grid-template-columns:310px minmax(0,1fr);background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 6px 22px #1b335808}.settings{padding:27px 25px;border-right:1px solid var(--line)}.section-label{display:flex;align-items:center;gap:9px}.section-label>span{font:11px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--muted);background:var(--bg);border-radius:4px;padding:4px 5px}.section-label h2{font-size:15px;letter-spacing:-.3px;margin:0;font-weight:750}.dropzone{position:relative;display:flex;flex-direction:column;align-items:center;text-align:center;gap:11px;padding:25px 8px 22px;border:1px dashed #adc0dc;border-radius:8px;margin-top:18px;background:#f7faff;cursor:pointer;transition:background .15s}.dropzone svg{color:#718cb6;margin-bottom:2px}.dropzone strong{font-size:13px;font-weight:600}.dropzone span{font-size:10px;color:var(--muted)}.dropzone:hover,.dropzone.dragover{background:#eaf1ff;border-color:var(--blue)}.dropzone:focus-within{outline:3px solid #88aafb;outline-offset:3px}.dropzone input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}.file-info{margin-top:12px;padding:10px 12px;border-radius:6px;background:var(--soft);font-size:12px}.file-info strong{display:block;overflow-wrap:anywhere;margin-bottom:5px}.file-info span{font:10px ui-monospace,SFMono-Regular,monospace;color:var(--muted)}.text-button{background:none;border:0;color:var(--blue);padding:13px 0 0;font-size:12px;text-align:left;display:block;margin:auto}.text-button span{margin-left:8px}.settings-divider{height:1px;background:var(--line);margin:23px 0}.field-label{display:block;font-size:12px;font-weight:650;margin:19px 0 9px}.unit-input{display:flex;align-items:center;border:1px solid #cbd5e2;border-radius:6px;padding-right:13px;overflow:hidden}.unit-input input{width:100%;min-width:0;border:0;padding:12px;font:20px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--ink)}.unit-input span{font-size:11px;color:var(--muted);white-space:nowrap}.presets{display:grid;grid-template-columns:repeat(4,1fr);gap:5px;margin-top:8px}.presets button{background:white;border:1px solid var(--line);border-radius:5px;font-size:11px;padding:7px 0;color:var(--muted)}.presets .selected{background:#edf3ff;border-color:#a4bdf3;color:var(--blue)}.hint{font-size:10px;color:var(--muted);line-height:1.6;margin:9px 0 0}select{color:var(--ink);background:white;border:1px solid #cbd5e2;border-radius:6px;min-height:42px;padding:10px;width:100%;font-size:12px}.format-note{font-size:11px;line-height:1.6;color:var(--muted);min-height:36px;margin:9px 0 17px}.primary{display:flex;align-items:center;justify-content:space-between;width:100%;padding:14px 17px;color:white;background:var(--blue);border:0;border-radius:6px;font-size:14px;font-weight:650}.primary:hover:enabled{background:#1c48b1}.reset{display:block;margin:12px auto 0;padding:7px 10px;background:none;border:0;color:var(--muted);font-size:11px}
.work-area{padding:27px;display:flex;flex-direction:column;min-width:0}.work-heading{display:flex;justify-content:space-between;align-items:center;gap:12px}.zoom-control{display:flex;gap:8px;align-items:center;font-size:11px;color:var(--muted)}.zoom-control select{width:auto;min-height:31px;padding:6px;font-size:11px}.status{font-size:12px;line-height:1.6;margin:17px 0;color:var(--muted)}.status.error{color:#9b4118}.empty{background:var(--soft);border:1px solid #e8edf3;border-radius:9px;flex:1;min-height:340px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:30px}.empty-sheet{width:128px;background:white;border:1px solid #d8e2ed;box-shadow:5px 7px 0 #e5ebf4;border-radius:5px;padding:12px;transform:rotate(-5deg);margin-bottom:24px}.sheet-crop{height:75px;background:repeating-conic-gradient(#e2e9f4 0% 25%,#eff3fa 0% 50%) 0/18px 18px;display:grid;place-items:center}.sheet-crop span{width:32px;height:44px;border-radius:8px 8px 3px 3px;background:#6d93d7;border:4px solid #c7d7f3}.sheet-caption{display:block;font:7px ui-monospace,monospace;letter-spacing:1.8px;color:#8395b1;margin-top:9px}.empty h3{font-size:17px;letter-spacing:-.5px;margin:0 0 10px}.empty p{font-size:12px;line-height:1.8;margin:0;color:var(--muted)}.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.compare-grid figure{margin:0;min-width:0;border:1px solid var(--line);border-radius:8px;overflow:hidden}.compare-grid figcaption{padding:12px;display:flex;justify-content:space-between;gap:5px;font-size:11px;background:var(--soft)}.compare-grid figcaption strong{font:11px ui-monospace,monospace;color:var(--blue)}.image-pane{height:330px;overflow:auto;background:repeating-conic-gradient(#edf0f4 0% 25%,#fff 0% 50%) 0/16px 16px;position:relative;overscroll-behavior:contain}.image-pane img{display:block;max-width:none;margin:auto;object-fit:contain}.image-pane p{font-size:12px;color:var(--muted);text-align:center;line-height:1.8;margin:120px 10px 0}.compare-hint{font-size:10px;line-height:1.6;color:var(--muted);margin:10px 0}.result-summary{display:flex;gap:16px;align-items:center;justify-content:space-between;background:#f0f6ff;border-radius:8px;padding:16px;margin-top:16px}.result-summary.warning{background:#fff5e9}.result-badge{font-size:14px;font-weight:750;color:var(--blue)}.warning .result-badge{color:#985219}.result-summary p{font-size:11px;line-height:1.6;color:var(--muted);margin:5px 0 0}.download{font-size:12px;white-space:nowrap;background:var(--ink);color:#fff;padding:12px 15px;border-radius:6px;text-decoration:none}.download[aria-disabled=true]{pointer-events:none;opacity:.4}.download span{margin-left:8px}.bottom-note{font-size:10px;line-height:1.6;color:var(--muted);margin:18px 0 0;padding-top:8px}
.guide{padding:34px 0 36px}.guide h2{font-size:15px;letter-spacing:-.4px;margin:0 0 19px}.guide-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.guide h3{font-size:12px;margin:0 0 8px}.guide p{font-size:12px;line-height:1.8;color:var(--muted);margin:0}footer{max-width:1440px;margin:auto;padding:22px 48px 30px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:12px}footer span{font-weight:700}footer small{font-size:10px;font-weight:400;color:var(--muted);margin-left:10px}footer p{font-size:10px;color:var(--muted);margin:0;line-height:1.7}
@media(min-width:1450px){.image-pane{height:390px}}@media(max-width:1050px){.header{padding:0 28px}main{padding:0 28px}.workspace{grid-template-columns:275px minmax(0,1fr)}.settings{padding:22px 18px}.work-area{padding:22px 18px}.privacy-note{display:none}.result-summary{flex-wrap:wrap}footer{padding-left:28px;padding-right:28px}.work-heading{align-items:flex-start;flex-wrap:wrap}}@media(max-width:760px){.header{height:65px;padding:0 18px}.brand{font-size:19px}.header-links{gap:12px}.header-links a{font-size:11px}.preview-badge{font-size:9px}.brand-mark{width:29px;height:29px}main{padding:0 16px}.intro{padding:27px 0 23px}.mobile-break{display:block}h1{font-size:29px;letter-spacing:-1.4px;line-height:1.35}.lead{font-size:12px;max-width:310px}.workspace{grid-template-columns:1fr}.settings{border-right:0;border-bottom:1px solid var(--line);padding:22px}.dropzone{padding:20px 10px}.settings-divider{margin:22px 0}.work-area{padding:22px 16px}.empty{min-height:300px}.work-heading{align-items:center}.image-pane{height:255px}.compare-grid{gap:8px}.compare-grid figcaption{padding:10px 7px;font-size:10px;flex-wrap:wrap}.compare-grid figcaption strong{font-size:10px}.image-pane p{font-size:10px;margin-top:90px}.compare-hint{font-size:10px}.result-summary{padding:14px}.download{width:100%;text-align:center;padding:14px}.guide{padding:30px 5px}.guide-columns{grid-template-columns:1fr;gap:22px}footer{margin:0 16px;padding:22px 3px;display:block}footer p{margin-top:12px}.presets button{padding:9px}.unit-input input{padding:14px}select{min-height:44px}.zoom-control select{min-height:36px}.empty-sheet{margin-bottom:25px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.tool-nav{max-width:1440px;margin:auto;padding:14px 48px 0;display:flex;gap:6px;flex-wrap:wrap}.tool-nav a{display:inline-flex;align-items:center;min-height:44px;white-space:nowrap;font-size:12px;text-decoration:none;padding:9px 13px;border-radius:6px;color:var(--muted)}.tool-nav a:hover{background:#e3eafa}.tool-nav a[aria-current=page],.tool-nav a[aria-current=true]{background:var(--ink);color:white}.intro.toolbox-intro{padding-top:44px;padding-bottom:32px}h1{word-break:keep-all}
.tool-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.tool-card{display:flex;flex-direction:column;padding:28px;background:var(--surface);border:1px solid var(--line);border-radius:12px;text-decoration:none;min-width:0}.tool-card:hover{border-color:var(--blue)}.tool-symbol{font:26px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--blue);min-height:58px;letter-spacing:-1px}.tool-symbol span{color:#8299bd}.tool-card h2{font-size:22px;letter-spacing:-.8px;margin:0 0 13px}.tool-card p{font-size:13px;line-height:1.8;color:var(--muted);margin:0 0 22px}.tool-card .tool-description{font-size:14px;line-height:1.75;margin-bottom:12px;word-break:keep-all;overflow-wrap:anywhere}.tool-card .tool-note{font-size:12px;line-height:1.7;margin-bottom:18px;word-break:keep-all;overflow-wrap:anywhere}.tool-example{font-size:11px;color:var(--muted);margin-top:auto}.tool-action{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:17px;margin-top:22px;font-size:13px;font-weight:700;color:var(--blue)}
.privacy-banner{margin:0 0 22px;padding:17px 20px;border:1px solid #bfd9d3;border-left:4px solid #267668;border-radius:6px;background:#f2faf7;display:flex;gap:10px 24px;align-items:center;flex-wrap:wrap}.privacy-banner strong{font-size:15px;color:#205e53}.privacy-banner span{font-size:12px;color:#3f665f;line-height:1.7}.privacy-explainer{border-top:1px solid var(--line);padding:25px 0 30px}.privacy-explainer h2{font-size:16px;letter-spacing:-.3px;margin:0 0 12px}.privacy-explainer p{font-size:13px;color:var(--muted);line-height:1.8;max-width:850px}.guide .guide-intro{margin:16px 0 22px;max-width:960px}.guide a{color:var(--blue);text-underline-offset:3px}.navigation-note{font-size:12px;line-height:1.8;color:var(--muted);padding:0 0 22px;margin:0}
.number-field{width:100%;min-width:0;border:1px solid #cbd5e2;border-radius:6px;padding:11px;color:var(--ink);background:white;font:18px ui-monospace,SFMono-Regular,Menlo,monospace}.dimension-fields{display:grid;grid-template-columns:1fr 1fr;gap:10px}.dimension-fields>div{min-width:0}.checkbox-field{display:flex;align-items:center;gap:7px;font-size:12px;margin:14px 0 0;min-height:30px}.checkbox-field input{width:17px;height:17px;accent-color:var(--blue)}
.editor-preview{margin:0;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:repeating-conic-gradient(#edf0f4 0% 25%,#fff 0% 50%) 0/16px 16px}.editor-preview figcaption{padding:12px;background:var(--soft);font-size:12px}.editor-preview img{display:block;width:100%;height:370px;object-fit:contain}.editor-result h3{font-size:14px;margin:0 0 12px}#result-dimensions{font:600 17px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--blue)}.editor-result .result-summary{flex-wrap:wrap}.editor-result .result-summary p{overflow-wrap:anywhere}
@media(max-width:1050px){.tool-nav{padding-left:28px;padding-right:28px}.tool-card{padding:22px}.tool-symbol{font-size:22px}}@media(max-width:760px){.tool-nav{padding:12px 16px 0;gap:3px}.tool-nav a{padding:9px;font-size:11px}.tool-list{grid-template-columns:1fr;gap:12px}.tool-card{padding:22px}.tool-symbol{min-height:43px;font-size:24px}.tool-card h2{font-size:21px}.tool-card p{margin-bottom:14px}.tool-action{margin-top:16px}.intro.toolbox-intro{padding-top:26px;padding-bottom:24px}.privacy-banner{padding:14px 15px;gap:5px}.privacy-banner strong{font-size:14px}.editor-preview img{height:260px}.number-field{min-height:44px}.privacy-explainer p{font-size:12px}#result-dimensions{font-size:16px}}
:where(.handoff){margin-top:16px;padding-top:14px;border-top:1px solid var(--line);display:grid;gap:8px;text-align:left;width:100%;min-width:0}
.handoff label{display:grid;gap:6px;font-size:13px;line-height:1.6}
.handoff select{width:100%;min-height:44px}
.handoff button,.presets button,#all-pages,#add-mark,#update-mark,#undo-mark,#clear-marks,#pick-color,#logo-sample{background:#fff;border:1px solid var(--line);border-radius:5px;color:var(--blue);padding:10px 12px;min-height:44px;cursor:pointer}
.presets{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0}
.page-list{display:flex;flex-wrap:wrap;gap:6px;margin:14px 0}
.page-list label{padding:10px;border:1px solid var(--line);border-radius:5px;min-height:44px}
#mark-text{width:100%;font:inherit;min-height:90px}
.reading{max-width:800px;margin:40px auto;line-height:1.9}
.reading h2{font-size:22px;margin-top:40px}
.reading table{width:100%;border-collapse:collapse;font-size:14px}
.reading th,.reading td{padding:10px;text-align:left;border-bottom:1px solid var(--line)}
.reading ol{padding-left:24px}.reading li{margin:10px 0}
footer{flex-wrap:wrap}.footer-links{flex-basis:100%;display:flex;flex-wrap:wrap;gap:4px 20px}.footer-links a{display:inline-flex;align-items:center;min-height:44px;text-decoration:underline;text-underline-offset:3px}.reading{overflow-wrap:anywhere}.reading .lead{max-width:none;font-size:15px}.reading ul{padding-left:24px}