*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        :root{
            --primary:#fa5252;
            --primary-dark:#e03131;
            --primary-darker:#c92a2a;
            --primary-soft:#fff0f0;
            --primary-tint:#ffe3e3;
            --primary-border:#ffc9c9;
            --bg:#f8fafc;
            --card:#fff;
            --border:#e2e8f0;
            --text:#1e293b;
            --muted:#64748b;
            --success:#10b981;
            --danger:#ef4444;
            --shadow:0 10px 30px rgba(15,23,42,.06);
        }
        html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
        body{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.45;-webkit-font-smoothing:antialiased;overflow-x:hidden}
        a{text-decoration:none;color:inherit}
        button,input{font:inherit}
        button{cursor:pointer;border:0}
        img,svg,canvas{display:block;max-width:100%}
        .container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}

        .header{background:rgba(255,255,255,.96);position:sticky;top:0;z-index:100;border-bottom:1px solid var(--border);backdrop-filter:blur(4px)}
        .navbar{display:flex;align-items:center;justify-content:space-between;height:70px;gap:24px}
        .logo{font-size:1.75rem;font-weight:700;letter-spacing:-.02em;background:linear-gradient(135deg,#fa5252,#c92a2a);background-clip:text;-webkit-background-clip:text;color:transparent}
        .logo span{font-weight:800;color:var(--primary);background:none;-webkit-background-clip:unset}
        .app-drawer-btn{width:44px;height:44px;border-radius:28px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.45rem;transition:.2s}
        .app-drawer-btn:hover{background:var(--primary-tint);transform:scale(1.02)}
        .app-drawer-btn:focus-visible,.icon-btn:focus-visible,.primary-btn:focus-visible,.secondary-btn:focus-visible,.danger-btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

        .drawer-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);backdrop-filter:blur(3px);z-index:1000;visibility:hidden;opacity:0;transition:.2s}
        .drawer-overlay.active{visibility:visible;opacity:1}
        .app-drawer{position:fixed;top:80px;right:24px;width:320px;background:#fff;border-radius:32px;box-shadow:0 25px 40px -12px rgba(0,0,0,.25);padding:20px 16px;border:1px solid var(--border);transform:scale(.95);opacity:0;transition:.2s;pointer-events:none}
        .drawer-overlay.active .app-drawer{transform:scale(1);opacity:1;pointer-events:auto}
        .drawer-header{display:flex;justify-content:space-between;align-items:center;padding-bottom:12px;border-bottom:1px solid var(--primary-soft);margin-bottom:16px}
        .drawer-header h4{font-size:1rem}
        .close-drawer{background:none;color:var(--muted);font-size:1.25rem}
        .apps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px 8px}
        .app-item{display:flex;flex-direction:column;align-items:center;gap:8px;padding:8px 4px;border-radius:16px;color:#304159;transition:.2s}
        .app-item:hover{background:#f1f5f9}
        .app-icon{width:48px;height:48px;border-radius:20px;background:var(--primary-soft);display:flex;align-items:center;justify-content:center;font-size:1.45rem;color:var(--primary)}
        .app-name{font-size:.7rem;font-weight:500;text-align:center}

        .tool-wrapper{padding:44px 0 56px}
        .hero{text-align:center;max-width:820px;margin:0 auto 28px}
        .hero-icon{width:76px;height:76px;margin:0 auto 18px;border-radius:24px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:36px}
        .hero h1{font-size:clamp(2rem,4vw,3rem);line-height:1.1;letter-spacing:-.03em;margin-bottom:12px}
        .hero p{font-size:1rem;color:var(--muted);max-width:720px;margin:0 auto}

        .tool-card{background:var(--card);border-radius:32px;padding:28px;box-shadow:var(--shadow);border:1px solid rgba(226,232,240,.75)}
        .dropzone{border:2px dashed var(--primary-border);background:#fff8f8;border-radius:26px;min-height:220px;padding:28px;display:flex;align-items:center;justify-content:center;text-align:center;transition:.2s}
        .dropzone.dragover{background:var(--primary-soft);border-color:var(--primary);transform:translateY(-1px)}
        .dropzone-content{max-width:620px}
        .dropzone-icon{width:64px;height:64px;border-radius:20px;background:#fff0f0;color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:28px;margin:0 auto 15px}
        .dropzone h2{font-size:1.18rem;margin-bottom:7px}
        .dropzone p{color:var(--muted);font-size:.9rem;margin-bottom:16px}
        .primary-btn{background:var(--primary);color:#fff;padding:13px 20px;border-radius:15px;font-weight:700;transition:.2s;display:inline-flex;align-items:center;justify-content:center;gap:8px}
        .primary-btn:hover{background:var(--primary-dark);transform:translateY(-1px)}
        .secondary-btn{background:#fff;border:1px solid var(--border);color:#334155;padding:11px 16px;border-radius:14px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.2s}
        .secondary-btn:hover{background:#f8fafc;border-color:#cbd5e1}
        .danger-btn{background:#fff;border:1px solid #fecaca;color:#dc2626;padding:11px 16px;border-radius:14px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:8px}
        .danger-btn:hover{background:#fef2f2}

        .workspace{display:none;margin-top:22px}
        .workspace.active{display:block}
        .workspace-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px;flex-wrap:wrap}
        .summary{display:flex;flex-wrap:wrap;gap:8px}
        .stat{background:#f8fafc;border:1px solid var(--border);border-radius:14px;padding:8px 12px;font-size:.8rem;color:#475569}
        .stat strong{color:var(--text)}
        .toolbar{display:flex;gap:8px;flex-wrap:wrap}
.sort-control{display:flex;align-items:center;gap:8px;padding:8px 10px;border:1px solid var(--border);border-radius:14px;background:#fff;color:#475569;font-size:.78rem}
.sort-control label{display:inline-flex;align-items:center;gap:6px;font-weight:700;white-space:nowrap}
.sort-control label i{color:var(--primary)}
.sort-control select{border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text);padding:7px 28px 7px 9px;font:inherit;outline:none}
.sort-control select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(250,82,82,.12)}

        .toolbar .secondary-btn,.toolbar .danger-btn{padding:10px 13px;font-size:.78rem}

        .hint-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 14px;border:1px solid var(--border);border-radius:16px;background:#fff;margin-bottom:16px;color:var(--muted);font-size:.78rem}
        .hint-bar span{display:inline-flex;align-items:center;gap:7px}
        .hint-bar i{color:var(--primary)}

        .page-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:16px;min-height:120px}
        .empty-grid{text-align:center;color:var(--muted);padding:46px 12px;grid-column:1/-1}
        .page-card{position:relative;background:#fff;border:2px solid transparent;border-radius:20px;padding:10px;box-shadow:0 3px 12px rgba(15,23,42,.05);cursor:grab;user-select:none;transition:.16s;min-width:0}
        .page-card:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(15,23,42,.08)}
        .page-card.selected{border-color:var(--primary);box-shadow:0 0 0 3px rgba(250,82,82,.1)}
        .page-card.dragging{opacity:.42;cursor:grabbing}
        .page-card.drop-target{outline:2px dashed var(--primary);outline-offset:2px}
        .thumb-wrap{position:relative;aspect-ratio:3/4;background:#f1f5f9;border-radius:14px;display:flex;align-items:center;justify-content:center;overflow:hidden}
        .thumb-wrap canvas{max-width:100%;max-height:100%;width:auto;height:auto;background:#fff;box-shadow:0 3px 8px rgba(15,23,42,.12)}
        .page-badge{position:absolute;left:8px;top:8px;background:rgba(15,23,42,.88);color:#fff;font-size:.68rem;font-weight:700;border-radius:999px;padding:4px 8px;z-index:2}.position-badge{position:absolute;right:8px;top:8px;background:rgba(250,82,82,.95);color:#fff;font-size:.68rem;font-weight:800;border-radius:999px;padding:4px 8px;z-index:2}.page-title small{color:#64748b;font-weight:600}.page-badge,.position-badge{max-width:calc(50% - 14px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
        .selected-badge{position:absolute;right:8px;top:8px;background:var(--primary);color:#fff;width:26px;height:26px;border-radius:50%;display:none;align-items:center;justify-content:center;font-size:.75rem}
        .page-card.selected .selected-badge{display:flex}
        .card-actions{display:flex;align-items:center;justify-content:space-between;gap:6px;padding-top:9px}
        .page-title{font-size:.72rem;color:#475569;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
        .mini-actions{display:flex;gap:4px;flex:none}
        .icon-btn{width:28px;height:28px;border:1px solid var(--border);border-radius:9px;background:#fff;color:#475569;display:flex;align-items:center;justify-content:center;font-size:.7rem}
        .icon-btn:hover{background:#f8fafc;color:var(--primary)}
        .icon-btn.delete:hover{color:#dc2626;background:#fef2f2}

        .export-panel{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:18px;padding:18px;background:#fff8f8;border:1px solid var(--primary-border);border-radius:20px}
        .export-copy h3{font-size:.95rem;margin-bottom:3px}
        .export-copy p{font-size:.78rem;color:var(--muted)}
        .export-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
        .process-btn{background:var(--primary);color:#fff;padding:13px 18px;border-radius:15px;font-weight:700;display:inline-flex;align-items:center;gap:8px}
        .process-btn:hover{background:var(--primary-dark)}
        .process-btn:disabled{opacity:.5;cursor:not-allowed}

        .progress{display:none;margin-top:16px}
        .progress.active{display:block}
        .progress-head{display:flex;justify-content:space-between;font-size:.78rem;color:var(--muted);margin-bottom:7px}
        .bar{height:9px;background:#e2e8f0;border-radius:999px;overflow:hidden}
        .fill{width:0;height:100%;background:var(--primary);transition:.2s}
        .download{display:none;margin-top:14px}
        .download.active{display:block}
        .download a{display:flex;align-items:center;justify-content:center;gap:8px;background:var(--success);color:#fff;padding:14px;border-radius:15px;font-weight:700}

        .status{display:none;margin-top:14px;padding:12px 14px;border-radius:14px;font-size:.82rem}
        .status.show{display:block}
        .status.info{background:#f8fafc;border:1px solid var(--border);color:#475569}
        .status.error{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c}
        .status.success{background:#ecfdf5;border:1px solid #a7f3d0;color:#047857}

        .features{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:20px}
        .feature{background:#fff;border:1px solid var(--border);border-radius:20px;padding:18px}
        .feature i{color:var(--primary);font-size:1.15rem;margin-bottom:10px}
        .feature h3{font-size:.9rem;margin-bottom:4px}
        .feature p{font-size:.76rem;color:var(--muted)}

        .footer{background:#0f172a;color:#cbd5e1;padding:48px 0 32px;margin-top:42px}
        .footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:32px;margin-bottom:48px}
        .footer-col h4{color:#fff;margin-bottom:18px}
        .footer-col ul{list-style:none}
        .footer-col li{margin-bottom:10px}
        .footer-col a{color:#94a1b8;font-size:.85rem}
        .footer-col a:hover{color:#fff}
        .copyright{text-align:center;padding-top:32px;border-top:1px solid #1e293b;font-size:.75rem}

        #fileInput{display:none}
        .sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}

        @media(max-width:900px){
            .features{grid-template-columns:1fr}
            .page-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}
        }
        @media(max-width:760px){
            .container{padding:0 14px}
            .tool-wrapper{padding-top:28px}
            .tool-card{padding:16px;border-radius:24px}
            .dropzone{min-height:190px;padding:20px}
            .workspace-top,.export-panel,.hint-bar{align-items:stretch;flex-direction:column}
            .toolbar,.export-actions{width:100%}
            .toolbar>* , .export-actions>*{flex:1}
            .app-drawer{right:12px;left:12px;width:auto;top:76px}
            .apps-grid{gap:12px 4px}
        }
        @media(max-width:480px){
            .page-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
            .hero h1{font-size:2rem}
            .dropzone p{font-size:.8rem}
            .thumb-wrap{min-height:210px;aspect-ratio:3/4}
            .page-badge,.position-badge{
                top:auto;
                bottom:7px;
                font-size:.62rem;
                line-height:1.2;
                padding:4px 6px;
                max-width:calc(50% - 10px);
                white-space:nowrap;
                overflow:visible;
                text-overflow:clip;
                z-index:4;
            }
            .page-badge{left:6px}
            .position-badge{right:6px}
            .selected-badge{top:7px;right:7px;z-index:5}
            .card-actions{padding-top:8px;align-items:flex-start}
            .page-title{font-size:.68rem;line-height:1.25}
        }