:root{--beige-bg:#f7f4ef;--beige-paper:#fffbf7;--beige-border:#e8e2d9;--beige-text:#2c2722;--beige-muted:#5c554d;--beige-accent:#8b7355;--viewer-bg:#111}*{box-sizing:border-box}body{background:var(--beige-bg);color:var(--beige-text);margin:0;font-family:IBM Plex Sans,Segoe UI,Tahoma,sans-serif;overflow:hidden}#app{width:100vw;height:100dvh;overflow:hidden}.page{width:100%;height:100%;position:relative;overflow:hidden}.page.page-transparent{background:0 0}.page.page-transparent .viewer-canvas{border-color:#0000}.app-logo{flex:none;width:180px;max-width:100%;height:auto;display:block}.app-stage{width:1440px;height:900px;transform:translate(-50%, -50%) scale(var(--ui-scale));transform-origin:50%;flex-direction:column;gap:14px;padding:18px;display:flex;position:absolute;top:50%;left:50%}.viewer-layout{flex:auto;grid-template-columns:minmax(240px,340px) 1fr minmax(220px,280px);gap:14px;height:auto;min-height:0;display:grid}.viewer-layout-simple{grid-template-columns:1fr}.meta-panel,.controls-panel{background:var(--beige-paper);border:1px solid var(--beige-border);border-radius:12px;align-self:start;padding:16px;box-shadow:0 8px 32px #2c27221f}.panel-title{margin:0 0 8px;font-size:16px}.meta-summary,.meta-note,.meta-error{margin:0 0 10px;font-size:12px;line-height:1.45}.meta-connection{color:var(--beige-accent);margin:0 0 10px;font-size:11px;font-weight:600}.meta-error{color:#b72a2a;font-weight:600}.meta-field{border-bottom:1px solid var(--beige-border);justify-content:space-between;gap:10px;padding:8px 0;font-size:12px;display:flex}.meta-field strong{text-align:right}.viewer-shell{flex-direction:column;gap:10px;height:calc(100% - 56px);min-height:0;display:flex}.viewer-canvas{background:var(--viewer-bg);-webkit-user-select:none;user-select:none;border:1px solid #282828;border-radius:12px;flex:1;min-height:0;position:relative;overflow:hidden}.viewer-canvas.is-measuring{cursor:crosshair}.book-image{object-fit:contain;pointer-events:none;width:100%;height:100%}.loading-state{color:#ddd;place-items:center;width:100%;height:100%;font-size:13px;display:grid}.loading-overlay{z-index:12;color:#fff;pointer-events:none;background:#00000061;justify-content:center;align-items:center;gap:12px;font-size:14px;display:flex;position:absolute;inset:0}.loading-spinner{border:3px solid #ffffff59;border-top-color:#fff;border-radius:50%;width:22px;height:22px;animation:.8s linear infinite loading-spin}@keyframes loading-spin{to{transform:rotate(360deg)}}.annotation-dot{color:#fff;cursor:pointer;z-index:6;background:#e73946f2;border:1px solid #fff;border-radius:50%;place-items:center;width:20px;height:20px;font-size:11px;font-weight:700;display:grid;position:absolute;transform:translate(-50%,-50%)}.annotation-dot span{line-height:1}.measure-point{z-index:8;pointer-events:none;background:#2563eb;border:2px solid #fff;border-radius:50%;width:10px;height:10px;position:absolute;transform:translate(-50%,-50%)}.measure-line-layer{z-index:7;pointer-events:none;width:100%;height:100%;position:absolute;inset:0}.measure-line{stroke:#2563eb;stroke-width:.45px}.magnifier-lens{pointer-events:none;z-index:12;border:2px solid #ffffffe6;border-radius:50%;position:absolute;overflow:visible;transform:translate(-50%,-50%);box-shadow:0 8px 24px #00000059}.magnifier-indicator{color:#fff;letter-spacing:.01em;background:#111827eb;border:1px solid #ffffffd9;border-radius:999px;padding:2px 10px;font-size:12px;font-weight:700;line-height:1.2;position:absolute;top:-14px;left:50%;transform:translate(-50%)}.viewer-overlay{justify-content:center;gap:12px;display:flex;position:absolute;bottom:14px;left:0;right:0}.round-btn,.ctl-btn,.preset-btn{background:var(--beige-paper);color:var(--beige-text);border:1px solid var(--beige-border);cursor:pointer;border-radius:10px;font-weight:700}.round-btn,.ctl-btn{width:40px;height:40px}.preset-btn{padding:6px 10px}.viewer-footer{background:var(--beige-paper);border:1px solid var(--beige-border);border-radius:10px;justify-content:space-between;gap:10px;padding:8px 10px;font-size:12px;display:flex}.controls-grid{grid-template-columns:40px 1fr 40px;align-items:center;gap:8px;margin-bottom:12px;display:grid}.frame-label{text-align:center;font-size:13px;font-weight:700}.field-label{color:var(--beige-muted);margin-bottom:6px;font-size:12px;display:block}.bg-picker{border:1px solid var(--beige-border);border-radius:8px;width:100%;height:34px;margin-bottom:10px}.preset-row{gap:6px;display:flex}.measure-toggle{color:var(--beige-text);align-items:center;gap:8px;margin-top:10px;font-size:12px;display:flex}.measure-readout{color:var(--beige-accent);margin:8px 0 0;font-size:12px;font-weight:600}.capture-gallery{background:var(--beige-paper);border:1px solid var(--beige-border);border-radius:12px;align-self:start;padding:12px}.capture-title{color:var(--beige-text);margin:0 0 10px;font-size:14px}.capture-list{flex-wrap:wrap;gap:10px;display:flex}.capture-item{border:1px solid var(--beige-border);background:#fff;border-radius:10px;flex:0 0 150px;width:150px;overflow:hidden}.capture-thumb{object-fit:cover;background:#e5e7eb;width:100%;height:120px;display:block}.capture-meta{justify-content:space-between;align-items:center;gap:8px;padding:8px;display:flex}.capture-name{color:var(--beige-muted);text-overflow:ellipsis;white-space:nowrap;font-size:11px;overflow:hidden}.capture-download{color:#1d4ed8;font-size:12px;font-weight:600;text-decoration:none}