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ease}.progress-text{text-align:center;margin-top:12px;font-size:15px;font-weight:600;color:#6b7280}.preview-section{margin-top:32px}.preview-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;padding-bottom:20px;border-bottom:2px solid #e5e7eb}.preview-header h3{font-size:24px;font-weight:700;color:#1f2937;margin:0;display:flex;align-items:center;gap:12px}.btn-export{padding:14px 24px;background:linear-gradient(135deg,#10b981,#059669);color:#fff;border:none;border-radius:12px;font-size:15px;font-weight:700;cursor:pointer;display:flex;align-items:center;gap:10px;transition:all .2s;box-shadow:0 6px 20px #10b98166;font-family:inherit}.btn-export:hover{transform:translateY(-2px);box-shadow:0 8px 28px #10b98180}.page-num{position:absolute;bottom:12px;right:12px;background:rgba(0,0,0,.75);color:#fff;padding:6px 12px;border-radius:8px;font-size:12px;font-weight:700;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}@media (max-width: 768px){.studio-layout{flex-direction:column}.studio-sidebar{width:100%}.studio-content{padding:20px}.book-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px}.input-row{grid-template-columns:1fr}}.user-card{background:#fff!important;border:2px solid #e5e7eb!important;border-radius:16px!important;padding:20px!important;box-shadow:0 4px 12px #00000014!important}.user-name{color:#1f2937!important;font-weight:700!important;font-size:16px!important}.user-plan{color:#6b7280!important;font-weight:600!important;font-size:13px!important}.user-credits{background:linear-gradient(135deg,#f0fdf4,#dcfce7)!important;padding:14px!important;border-radius:12px!important;border:1px solid #86efac!important}