:root{--pdft-primary:#2563eb;--pdft-primary-hover:#1d4ed8;--pdft-primary-light:#eff6ff;--pdft-radius:12px;--pdft-radius-sm:6px;--pdft-radius-lg:16px;--pdft-bg:#ffffff;--pdft-card-bg:#ffffff;--pdft-text:#1e293b;--pdft-text-muted:#64748b;--pdft-border:#e2e8f0;--pdft-border-hover:#cbd5e1;--pdft-success:#10b981;--pdft-danger:#ef4444;--pdft-shadow:0 4px 6px -1px rgba(0,0,0,0.05),0 2px 4px -1px rgba(0,0,0,0.03);--pdft-shadow-lg:0 10px 15px -3px rgba(0,0,0,0.08),0 4px 6px -2px rgba(0,0,0,0.04)}.pdft-hidden{display:none !important}.pdft-page-container{max-width:960px;margin:0 auto;padding:32px 20px;font-family:inherit;color:var(--pdft-text);box-sizing:border-box}.pdft-page-container *{box-sizing:border-box}.pdft-text-center{text-align:center}.pdft-page-header{text-align:center;margin-bottom:32px}.pdft-breadcrumbs{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--pdft-text-muted);margin-bottom:12px}.pdft-breadcrumbs a{color:var(--pdft-text-muted);text-decoration:none;transition:color 0.2s}.pdft-breadcrumbs a:hover{color:var(--pdft-primary)}.pdft-breadcrumbs .pdft-current{color:var(--pdft-text);font-weight:500}.pdft-page-title{font-size:32px;font-weight:700;margin:0 0 8px;color:var(--pdft-text);line-height:1.25}.pdft-page-subtitle{font-size:16px;color:var(--pdft-text-muted);max-width:650px;margin:0 auto;line-height:1.6}.pdft-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:inherit;font-weight:600;border-radius:var(--pdft-radius);cursor:pointer;text-decoration:none;border:1px solid transparent;transition:all 0.2s ease;line-height:1}.pdft-btn-primary{background-color:var(--pdft-primary);color:#ffffff !important;border-color:var(--pdft-primary)}.pdft-btn-primary:hover{background-color:var(--pdft-primary-hover);border-color:var(--pdft-primary-hover);box-shadow:0 4px 12px rgba(37,99,235,0.25)}.pdft-btn-outline{background-color:transparent;color:var(--pdft-primary);border-color:var(--pdft-primary)}.pdft-btn-outline:hover{background-color:var(--pdft-primary-light)}.pdft-btn-ghost{background-color:transparent;color:var(--pdft-text-muted);border-color:transparent}.pdft-btn-ghost:hover{color:var(--pdft-danger);background-color:#fef2f2}.pdft-btn-sm{padding:8px 14px;font-size:13px}.pdft-btn-lg{padding:14px 28px;font-size:16px}.pdft-btn-xl{padding:16px 36px;font-size:18px;border-radius:var(--pdft-radius-lg)}.pdft-btn-full{width:100%}.pdft-btn:disabled{opacity:0.5;cursor:not-allowed;pointer-events:none}.pdft-badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:9999px;font-size:12px;font-weight:600;background-color:var(--pdft-primary-light);color:var(--pdft-primary)}.pdft-tool-stage{background:var(--pdft-bg);border:1px solid var(--pdft-border);border-radius:var(--pdft-radius-lg);box-shadow:var(--pdft-shadow);padding:24px}.pdft-dropzone{border:2px dashed var(--pdft-border-hover);border-radius:var(--pdft-radius);padding:48px 24px;text-align:center;background-color:#fafbfd;transition:all 0.25s ease;cursor:pointer}.pdft-dropzone:hover,.pdft-dropzone.pdft-dragover{border-color:var(--pdft-primary);background-color:var(--pdft-primary-light)}.pdft-dropzone-icon{width:64px;height:64px;margin:0 auto 16px;background:#ffffff;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--pdft-primary);box-shadow:var(--pdft-shadow)}.pdft-dropzone-icon svg{width:32px;height:32px}.pdft-dropzone-title{font-size:20px;font-weight:700;margin:0 0 6px;color:var(--pdft-text)}.pdft-dropzone-desc{font-size:14px;color:var(--pdft-text-muted);margin:0 0 20px}.pdft-form-group{display:flex;flex-direction:column;gap:8px;margin-bottom:20px;text-align:left}.pdft-label{font-size:14px;font-weight:600;color:var(--pdft-text)}.pdft-input{width:100%;padding:12px 16px;border:1px solid var(--pdft-border);border-radius:var(--pdft-radius-sm);font-size:15px;font-family:inherit;background:#ffffff;color:var(--pdft-text);transition:border-color 0.2s}.pdft-input:focus{outline:none;border-color:var(--pdft-primary);box-shadow:0 0 0 3px rgba(37,99,235,0.15)}.pdft-options-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-bottom:20px}.pdft-option-card{border:1px solid var(--pdft-border);border-radius:var(--pdft-radius);padding:16px;cursor:pointer;background:#ffffff;transition:all 0.2s;display:flex;align-items:flex-start;gap:12px}.pdft-option-card:hover{border-color:var(--pdft-primary);background:var(--pdft-primary-light)}.pdft-option-card.pdft-selected{border-color:var(--pdft-primary);background:var(--pdft-primary-light);box-shadow:0 0 0 2px var(--pdft-primary)}.pdft-option-title{font-size:14px;font-weight:700;color:var(--pdft-text);margin-bottom:4px}.pdft-option-desc{font-size:12px;color:var(--pdft-text-muted);line-height:1.4}.pdft-pages-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px;margin:20px 0;max-height:480px;overflow-y:auto;padding:8px}.pdft-page-thumb-card{background:#ffffff;border:1px solid var(--pdft-border);border-radius:var(--pdft-radius-sm);padding:10px;display:flex;flex-direction:column;align-items:center;gap:8px;box-shadow:var(--pdft-shadow);transition:transform 0.2s,box-shadow 0.2s;position:relative}.pdft-page-thumb-card:hover{transform:translateY(-2px);box-shadow:var(--pdft-shadow-lg);border-color:var(--pdft-primary)}.pdft-page-thumb-canvas{width:100%;height:auto;max-height:180px;object-fit:contain;background:#f8fafc;border-radius:4px;transition:transform 0.3s ease}.pdft-page-thumb-info{font-size:12px;font-weight:600;color:var(--pdft-text)}.pdft-page-thumb-actions{display:flex;gap:6px}.pdft-workspace{display:flex;flex-direction:column;gap:20px}.pdft-workspace-header{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px;border-bottom:1px solid var(--pdft-border);flex-wrap:wrap;gap:12px}.pdft-workspace-summary{display:flex;align-items:center;gap:10px}.pdft-workspace-hint{font-size:13px;color:var(--pdft-text-muted)}.pdft-workspace-actions{display:flex;align-items:center;gap:8px}.pdft-processing{padding:40px 20px;text-align:center}.pdft-processing-card{max-width:460px;margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:16px}.pdft-spinner{width:48px;height:48px;border:4px solid var(--pdft-border);border-top-color:var(--pdft-primary);border-radius:50%;animation:pdft-spin 0.8s linear infinite}@keyframes pdft-spin{to{transform:rotate(360deg)}}.pdft-processing-title{font-size:18px;font-weight:700;margin:0;color:var(--pdft-text)}.pdft-progress-bar-container{width:100%;height:10px;background:#e2e8f0;border-radius:9999px;overflow:hidden}.pdft-progress-bar{height:100%;background:var(--pdft-primary);transition:width 0.3s ease;border-radius:9999px}.pdft-progress-percent{font-size:14px;font-weight:600;color:var(--pdft-primary)}.pdft-result{padding:36px 20px;text-align:center}.pdft-result-card{max-width:500px;margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:14px}.pdft-result-icon-success{width:68px;height:68px;border-radius:50%;background:#ecfdf5;color:var(--pdft-success);display:flex;align-items:center;justify-content:center}.pdft-result-icon-success svg{width:36px;height:36px}.pdft-result-title{font-size:22px;font-weight:700;margin:0;color:var(--pdft-text)}.pdft-result-meta{font-size:14px;color:var(--pdft-text-muted);margin:0 0 10px}.pdft-result-actions{display:flex;flex-direction:column;gap:12px;width:100%}.pdft-privacy-guarantee{display:flex;align-items:center;gap:14px;margin-top:24px;padding:16px 20px;background-color:#f8fafc;border:1px solid var(--pdft-border);border-radius:var(--pdft-radius);font-size:13px;color:var(--pdft-text-muted);line-height:1.5}.pdft-privacy-icon{flex-shrink:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:#ecfdf5;color:var(--pdft-success);border-radius:50%}.pdft-privacy-icon svg{width:18px;height:18px}.pdft-grid-container{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;margin-top:16px}.pdft-tool-card{display:flex;flex-direction:column;background:var(--pdft-card-bg);border:1px solid var(--pdft-border);border-radius:var(--pdft-radius);padding:24px;text-decoration:none;color:var(--pdft-text);transition:all 0.25s ease;box-shadow:var(--pdft-shadow)}.pdft-tool-card:hover{border-color:var(--pdft-primary);transform:translateY(-3px);box-shadow:var(--pdft-shadow-lg)}.pdft-tool-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.pdft-tool-card-icon{width:44px;height:44px;border-radius:var(--pdft-radius-sm);background:var(--pdft-primary-light);color:var(--pdft-primary);display:flex;align-items:center;justify-content:center}.pdft-tool-card-icon svg{width:24px;height:24px}.pdft-tool-card-title{font-size:18px;font-weight:700;margin:0 0 8px;color:var(--pdft-text)}.pdft-tool-card-desc{font-size:14px;color:var(--pdft-text-muted);margin:0 0 16px;line-height:1.5;flex-grow:1}.pdft-tool-card-action{font-size:13px;font-weight:600;color:var(--pdft-primary)}.pdft-post-article-content{margin-top:40px;padding-top:32px;border-top:1px solid var(--pdft-border);line-height:1.8;font-size:15px;color:var(--pdft-text)}.pdft-post-article-content h2,.pdft-post-article-content h3{color:var(--pdft-text);font-weight:700;margin:28px 0 12px}.pdft-post-article-content h2{font-size:22px;border-bottom:2px solid var(--pdft-primary-light);padding-bottom:8px}.pdft-post-article-content h3{font-size:18px}.pdft-post-article-content p{margin-bottom:16px;color:var(--pdft-text)}.pdft-post-article-content ul,.pdft-post-article-content ol{margin:0 0 20px 24px;padding:0}.pdft-post-article-content li{margin-bottom:8px}