.smartedu-page{min-height:100vh;background:var(--bg-primary);padding:var(--space-6) var(--space-5);position:relative}.smartedu-page:before{content:"";position:fixed;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 30%,rgba(34,197,94,.06) 0%,transparent 50%),radial-gradient(circle at 70% 70%,rgba(59,130,246,.06) 0%,transparent 50%);pointer-events:none;z-index:0}.smartedu-container{max-width:800px;margin:0 auto;position:relative;z-index:1}.smartedu-header{text-align:center;margin-bottom:var(--space-8)}.smartedu-back-btn{display:inline-flex;align-items:center;gap:var(--space-2);padding:10px var(--space-5);background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--space-2);color:var(--text-secondary);font-size:.95rem;cursor:pointer;transition:all .3s ease;margin-bottom:var(--space-6);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.smartedu-back-btn:hover{background:var(--bg-hover);color:var(--primary);transform:translate(-3px)}.smartedu-title{font-size:2rem;font-weight:700;background:linear-gradient(135deg,var(--color-success-500),var(--color-info-500));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--space-2)}.smartedu-subtitle{color:var(--text-tertiary);font-size:.95rem}.smartedu-input-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--space-4);padding:28px;margin-bottom:var(--space-6);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:all .3s ease}.smartedu-input-card:hover{border-color:#22c55e4d;box-shadow:0 4px var(--space-5) #22c55e14}.smartedu-input-label{display:block;font-size:.9rem;font-weight:600;color:var(--text-secondary);margin-bottom:var(--space-3)}.smartedu-input-wrapper{display:flex;gap:var(--space-3)}.smartedu-url-input{flex:1;padding:14px 18px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--space-3);color:var(--text-primary);font-size:.95rem;outline:none;transition:all .3s ease}.smartedu-url-input:focus{border-color:var(--color-success-500);box-shadow:0 0 0 3px #22c55e26}.smartedu-url-input::placeholder{color:var(--text-tertiary)}.smartedu-parse-btn{padding:14px 28px;background:linear-gradient(135deg,var(--color-success-500),var(--color-success-600));color:#fff;border:none;border-radius:var(--space-3);font-size:.95rem;font-weight:600;cursor:pointer;transition:all .3s ease;white-space:nowrap;display:flex;align-items:center;gap:var(--space-2)}.smartedu-parse-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 15px #22c55e59}.smartedu-parse-btn:disabled{opacity:.6;cursor:not-allowed}.smartedu-input-hint{display:flex;align-items:center;gap:6px;margin-top:var(--space-3);font-size:.82rem;color:var(--text-tertiary)}.smartedu-info-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--space-4);padding:28px;margin-bottom:var(--space-6);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);animation:fadeInUp .4s ease}@keyframes fadeInUp{0%{opacity:0;transform:translateY(var(--space-3))}to{opacity:1;transform:translateY(0)}}.smartedu-info-header{display:flex;align-items:flex-start;gap:var(--space-4);margin-bottom:var(--space-5)}.smartedu-info-icon{width:56px;height:56px;background:linear-gradient(135deg,#22c55e26,#3b82f626);border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.8rem;flex-shrink:0}.smartedu-info-detail{flex:1}.smartedu-info-title{font-size:1.15rem;font-weight:600;color:var(--text-primary);margin-bottom:6px;line-height:1.4}.smartedu-info-meta{display:flex;gap:var(--space-4);flex-wrap:wrap}.smartedu-meta-item{display:flex;align-items:center;gap:4px;font-size:.85rem;color:var(--text-tertiary)}.smartedu-meta-value{color:var(--text-secondary);font-weight:500}.smartedu-download-btn{width:100%;padding:var(--space-4);background:linear-gradient(135deg,var(--color-info-500),#2563eb);color:#fff;border:none;border-radius:var(--space-3);font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;gap:10px}.smartedu-download-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 15px #3b82f659}.smartedu-download-btn:disabled{opacity:.6;cursor:not-allowed}.smartedu-progress-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--space-4);padding:28px;margin-bottom:var(--space-6);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);animation:fadeInUp .4s ease}.smartedu-progress-title{display:flex;align-items:center;gap:10px;font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--space-5)}.smartedu-progress-bar-wrapper{background:var(--bg-primary);border-radius:10px;height:var(--space-3);overflow:hidden;margin-bottom:var(--space-4)}.smartedu-progress-bar{height:100%;border-radius:10px;transition:width .5s ease;position:relative;overflow:hidden}.smartedu-progress-bar.downloading{background:linear-gradient(90deg,var(--color-success-500),#4ade80)}.smartedu-progress-bar.merging{background:linear-gradient(90deg,var(--color-warning-500),var(--color-warning-100))}.smartedu-progress-bar.completed{background:linear-gradient(90deg,var(--color-info-500),#60a5fa)}.smartedu-progress-bar.failed{background:linear-gradient(90deg,var(--color-danger-500),#f87171)}.smartedu-progress-bar:after{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.2) 50%,transparent 100%);animation:shimmer 2s infinite}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}.smartedu-progress-bar.completed:after,.smartedu-progress-bar.failed:after{animation:none}.smartedu-progress-stats{display:flex;justify-content:space-between;flex-wrap:wrap;gap:var(--space-2)}.smartedu-progress-stat{font-size:.85rem;color:var(--text-tertiary)}.smartedu-progress-stat strong{color:var(--text-secondary)}.smartedu-complete-card{background:var(--bg-card);border:1px solid rgba(34,197,94,.3);border-radius:var(--space-4);padding:28px;margin-bottom:var(--space-6);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);animation:fadeInUp .4s ease;text-align:center}.smartedu-complete-icon{font-size:3rem;margin-bottom:var(--space-3)}.smartedu-complete-title{font-size:1.2rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--space-2)}.smartedu-complete-meta{color:var(--text-tertiary);font-size:.9rem;margin-bottom:var(--space-5)}.smartedu-save-btn{padding:14px 36px;background:linear-gradient(135deg,var(--color-success-500),var(--color-success-600));color:#fff;border:none;border-radius:var(--space-3);font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;display:inline-flex;align-items:center;gap:10px}.smartedu-save-btn:hover{transform:translateY(-1px);box-shadow:0 4px 15px #22c55e59}.smartedu-error{background:#ef444414;border:1px solid rgba(239,68,68,.2);border-radius:var(--space-3);padding:var(--space-4) var(--space-5);margin-bottom:var(--space-6);display:flex;align-items:center;gap:10px;color:var(--color-danger-500);font-size:.9rem;animation:fadeInUp .3s ease}.smartedu-help-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--space-4);padding:var(--space-6) 28px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.smartedu-help-title{font-size:.95rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--space-4);display:flex;align-items:center;gap:var(--space-2)}.smartedu-help-steps{list-style:none;padding:0;margin:0}.smartedu-help-steps li{display:flex;align-items:flex-start;gap:var(--space-3);padding:10px 0;font-size:.88rem;color:var(--text-secondary);line-height:1.5}.smartedu-help-steps li+li{border-top:1px solid var(--border-color)}.smartedu-step-num{width:var(--space-6);height:var(--space-6);background:linear-gradient(135deg,#22c55e26,#3b82f626);border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;color:var(--color-success-500);flex-shrink:0;margin-top:1px}.smartedu-spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:var(--radius-full);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.smartedu-pulse{animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@media (max-width: 640px){.smartedu-page{padding:var(--space-4) var(--space-3)}.smartedu-input-wrapper{flex-direction:column}.smartedu-parse-btn{justify-content:center}.smartedu-title{font-size:1.5rem}.smartedu-info-header{flex-direction:column;align-items:center;text-align:center}.smartedu-info-meta{justify-content:center}}