:root{--a4w:210mm;--a4h:297mm;--outer:5mm;--titlew:10mm;--gap:3mm;--accent:#2457d6;--line:#d0d5dd;--muted:#667085;--bg:#eef2f6}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:var(--bg);color:#101828;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Maru Gothic ProN","Hiragino Sans","Microsoft JhengHei","PingFang TC",sans-serif}
button,input,select{font:inherit}button{cursor:pointer}
.app{display:grid;grid-template-columns:360px minmax(0,1fr);min-height:100vh}
.sidebar{position:sticky;top:0;height:100vh;overflow:auto;padding:20px;background:#fff;border-right:1px solid var(--line);z-index:20}
.brand{display:flex;gap:11px;align-items:center;margin-bottom:12px}.brand-mark{width:42px;height:42px;border-radius:11px;background:var(--accent);color:#fff;display:grid;place-items:center;font-weight:700;font-size:20px}
h1{font-size:20px;margin:0}.version{font-size:11px;color:var(--muted)}
.panel{padding-top:16px;margin-top:16px;border-top:1px solid #eaecf0}.panel:first-of-type{border-top:0;margin-top:0}h2{font-size:14px;margin:0 0 9px}
.file-picker{display:flex;align-items:center;justify-content:center;width:100%;border-radius:9px;padding:10px 12px;margin-bottom:8px;cursor:pointer;font-size:14px;user-select:none}
.primary-picker{background:var(--accent);color:#fff}.secondary-picker{background:#f2f4f7;color:#344054;border:1px solid #eaecf0}
.file-picker input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}
.drop-zone{border:2px dashed #b8c2d1;border-radius:10px;padding:14px 10px;text-align:center;color:var(--muted);transition:.15s}
.drop-zone strong,.drop-zone small{display:block}.drop-zone strong{font-size:12px}.drop-zone small{font-size:10px;margin-top:4px}
.drop-zone.over{border-color:var(--accent);background:#eff6ff;color:#1d4ed8}
.field-label{display:block;font-size:11px;color:var(--muted);margin:10px 0 5px}
.text-input,.select-input{width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;color:#101828}
.status{min-height:18px;margin-top:7px;font-size:11px;color:var(--muted);text-align:center}
.layout-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:7px}.layout-card{border:1px solid var(--line);border-radius:8px;background:#fff;padding:9px 5px;font-size:11px;color:#344054}
.layout-card.active{border-color:var(--accent);box-shadow:0 0 0 2px #dbeafe;color:#1d4ed8}
.note{font-size:11px;line-height:1.5;color:var(--muted);margin:7px 0 0}
.panel-heading{display:flex;justify-content:space-between;align-items:center}.panel-heading span{font-size:11px;color:var(--muted)}
.photo-list{display:grid;gap:8px;max-height:360px;overflow:auto;padding-right:2px}.empty-list{font-size:12px;color:#98a2b3;padding:10px 0}
.photo-item{border:1px solid var(--line);border-radius:9px;padding:7px;background:#fff}.photo-item.dragging{opacity:.42}.photo-item.drag-over{outline:2px dashed var(--accent)}
.photo-top{display:grid;grid-template-columns:18px 46px minmax(0,1fr) 30px;gap:7px;align-items:center}
.drag-handle{color:#98a2b3;user-select:none;font-size:16px}.thumb{width:46px;height:46px;border-radius:6px;object-fit:cover;background:#fff}
.photo-name{font-size:11px;line-height:1.35;word-break:break-all}.photo-group{font-size:10px;color:var(--muted);margin-top:2px}
.delete-button{border:0;border-radius:6px;height:30px;background:#fff1f0;color:#b42318}
.adjust-row{display:grid;grid-template-columns:50px 1fr 37px;gap:6px;align-items:center;font-size:10px;color:var(--muted);margin-top:7px}.adjust-row input{width:100%}
.fit-row{display:grid;grid-template-columns:1fr 1fr;gap:5px;margin-top:6px}.fit-button{border:0;border-radius:6px;padding:5px;font-size:10px;background:#f2f4f7;color:#475467}.fit-button.active{background:#dbeafe;color:#1d4ed8}
.button{border:0;border-radius:9px;padding:10px 12px}.button.primary{background:var(--accent);color:#fff}.button.secondary{background:#f2f4f7;color:#344054;border:1px solid #eaecf0}.button.full{width:100%;margin-top:8px}
.workspace{padding:28px;overflow:auto}.preview-toolbar{max-width:var(--a4w);margin:0 auto 12px;display:flex;justify-content:space-between;color:var(--muted);font-size:12px}
#pages{display:grid;gap:24px;justify-content:center}
.page-wrap{width:var(--a4w)}
.page-controls{display:grid;grid-template-columns:auto 1fr 165px auto;gap:8px;align-items:center;margin-bottom:7px;padding:8px 10px;background:#fff;border:1px solid var(--line);border-radius:9px;font-size:11px}
.page-controls strong{white-space:nowrap}.page-controls input,.page-controls select{width:100%;padding:6px 8px;border:1px solid var(--line);border-radius:7px;background:#fff}
.page-controls button{border:0;border-radius:7px;padding:7px 9px;background:#fff1f0;color:#b42318}
.page{width:var(--a4w);height:var(--a4h);position:relative;overflow:hidden;background:#fff;box-shadow:0 5px 25px rgba(16,24,40,.15)}
.page-frame{position:absolute;inset:var(--outer);border:.42mm solid #000;z-index:5;pointer-events:none}.page-frame::after{content:"";position:absolute;top:-.42mm;bottom:-.42mm;left:var(--titlew);border-left:.42mm solid #000}
.title-strip{position:absolute;left:var(--outer);top:var(--outer);bottom:var(--outer);width:var(--titlew);z-index:6;display:flex;justify-content:center;align-items:center;padding:2mm 0;background:#fff;overflow:hidden}
.vertical-title{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;padding-top:8mm;gap:0.8mm;font-family:"Hiragino Maru Gothic ProN","Microsoft JhengHei","PingFang TC",sans-serif;font-size:14pt;font-weight:300;line-height:1;color:#000;text-align:center;overflow:hidden}
.vertical-title .vchar{display:block;flex:0 0 auto;width:1em;height:1em;line-height:1em;text-align:center}
.canvas-area{position:absolute;left:calc(var(--outer) + var(--titlew) + var(--gap));right:calc(var(--outer) + var(--gap));top:calc(var(--outer) + var(--gap));bottom:calc(var(--outer) + var(--gap));overflow:hidden;background:#fff}
.photo-cell{position:absolute;overflow:hidden;background:#fff;display:flex;align-items:center;justify-content:center;min-width:0;min-height:0}
.photo-cell img{width:100%;height:100%;max-width:100%;max-height:100%;display:block;background:#fff;object-position:center}
.empty-page{position:absolute;inset:0;display:grid;place-items:center;color:#98a2b3;background:#fff}
.busy{opacity:.62;pointer-events:none}
@media(max-width:1050px){.app{grid-template-columns:1fr}.sidebar{position:relative;height:auto;border-right:0;border-bottom:1px solid var(--line)}.workspace{padding:16px}.page-controls{grid-template-columns:1fr 1fr}.page-controls strong{grid-column:1/-1}}
@media print{body{background:#fff}.sidebar,.preview-toolbar,.page-controls{display:none!important}.app{display:block}.workspace{padding:0}#pages{gap:0}.page{box-shadow:none;page-break-after:always}.page-wrap{width:var(--a4w)}}