.study1018-iap-app{--bg:#f4f6f8;--line:#d8dee7;--red:#a5251b;--red2:#761a13;--muted:#667085;--soft:#fff3f1;--gold:#d99a14;font-family:Arial,Helvetica,sans-serif;max-width:1450px;margin:auto}.study1018-iap-app *{box-sizing:border-box}.iap-shell{background:var(--bg);border:1px solid var(--line);border-radius:18px;overflow:hidden}.iap-hero{background:linear-gradient(135deg,#741a13,#b72b1f);color:#fff;padding:24px}.iap-hero h2{margin:0 0 8px}.iap-hero p{margin:0;max-width:900px}.iap-upload{margin:18px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px}.iap-dropzone{border:2px dashed #aab3bf;border-radius:12px;padding:26px;text-align:center;background:#fafbfc;cursor:pointer}.iap-dropzone.drag{background:#fff0ed;border-color:var(--red)}.iap-dropzone strong{display:block;font-size:19px;margin-bottom:6px}.iap-pdf-input{display:none!important}.study1018-iap-app button{border:0;border-radius:9px;padding:10px 13px;font-weight:700;cursor:pointer}.iap-choose-button,.iap-primary{background:var(--red);color:#fff}.iap-choose-button{margin-top:12px}.iap-secondary{background:#e9edf2;color:#222}.iap-emergency{background:#b00020;color:#fff}.iap-status{margin-top:12px;color:var(--muted)}.iap-progress-wrap{display:none;height:9px;background:#e6eaf0;margin-top:10px;border-radius:9px;overflow:hidden}.iap-progress{height:100%;background:var(--red);width:0;transition:width .2s}.iap-toolbar{display:none;gap:8px;flex-wrap:wrap;padding:0 18px 18px}.iap-main{display:none;grid-template-columns:340px 1fr;gap:18px;padding:0 18px 18px}.iap-sidebar,.iap-viewer,.iap-notes,.iap-emergency-panel{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}.iap-emergency-panel{margin:0 18px 18px}.iap-emergency-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:10px;padding:12px}.iap-quick{background:#b00020;color:#fff}.iap-quick.missing{background:#eceff3;color:#69707b;cursor:default}.iap-head{padding:13px 14px;border-bottom:1px solid var(--line)}.iap-head strong{display:block}.iap-head small{color:var(--muted)}.iap-filters{display:grid;grid-template-columns:1fr auto;gap:8px;padding:10px}.iap-filters input,.iap-title-input,.iap-page-notes,.iap-category-input{width:100%;padding:10px;border:1px solid #bcc5d0;border-radius:8px;background:#fff}.iap-category-filter{display:flex;gap:6px;flex-wrap:wrap;padding:0 10px 10px}.iap-cat{font-size:12px;padding:7px 9px!important;background:#edf0f4}.iap-cat.active,.iap-favorites-only.active{background:var(--red);color:#fff}.iap-page-list{padding:10px;max-height:72vh;overflow:auto}.iap-page-button{width:100%;display:grid;grid-template-columns:36px 1fr auto;gap:9px;align-items:center;margin-bottom:8px;text-align:left;background:#f5f7f9;border:1px solid transparent!important}.iap-page-button.active{border-color:var(--red)!important;background:var(--soft)}.iap-number{width:32px;height:32px;display:grid;place-items:center;background:#e5e9ee;border-radius:8px}.iap-page-name strong,.iap-page-name small{display:block}.iap-page-name small{color:var(--muted);font-size:11px;margin-top:3px}.iap-star{color:#9aa3ad}.iap-page-button.favorite .iap-star{color:var(--gold)}.iap-right{display:grid;gap:18px}.iap-viewer-tools{display:flex;gap:8px;flex-wrap:wrap;align-items:center;padding:10px}.iap-canvas-wrap{overflow:auto;min-height:620px;max-height:78vh;padding:18px;background:#cfd5dc;text-align:center}.iap-canvas-wrap canvas{background:#fff;box-shadow:0 5px 22px rgba(0,0,0,.18);max-width:none}.iap-notes-body{padding:14px}.iap-notes-body label{display:block;font-weight:700;margin:10px 0 6px}.iap-page-notes{min-height:150px}.iap-note-actions{display:flex;gap:8px;margin-top:10px}.iap-save-message{color:#18794e;min-height:20px;margin-top:8px}.iap-detected-box{background:#f4f7fa;border:1px solid #d8dee7;padding:10px;border-radius:9px;font-size:13px}.iap-detected-text{margin-top:5px;color:#4a5565;line-height:1.4}.iap-disclaimer{margin:0 18px 18px;background:#fff8e8;border:1px solid #ecd38a;border-radius:12px;padding:13px}.iap-empty{padding:28px;text-align:center;color:var(--muted)}@media(max-width:900px){.iap-main{grid-template-columns:1fr}.iap-canvas-wrap{min-height:480px}.iap-page-list{max-height:45vh}}