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.practice-tab{color:var(--text-secondary)}body.theme-light .practice-tab.active{color:#fff}body.theme-light .filter-btn{background:#0000000a;border-color:#0000001a;color:var(--text-secondary)}body.theme-light .filter-btn:hover{background:#00000014}body.theme-light .filter-btn.active{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;overflow:hidden;font-family:Inter,PingFang SC,Microsoft YaHei,sans-serif;font-size:14px;background:var(--bg-primary);color:var(--text-primary)}#app{width:100%;height:100%;display:flex;flex-direction:row}#sidebar-nav{width:72px;background:var(--bg-secondary);border-right:1px solid var(--border-color);display:flex;flex-direction:column;align-items:center;padding:16px 0;z-index:100;flex-shrink:0}.sidebar-logo{margin-bottom:24px}.sidebar-logo 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var(--border-color);border-radius:var(--radius-sm);background:var(--bg-tertiary);color:var(--text-secondary);cursor:pointer;font-size:16px;transition:var(--transition)}.nav-actions button:active{transform:scale(.9)}#workspace-container{flex:1;display:flex;flex-direction:column;overflow:hidden;padding-bottom:28px}#main-content{flex:1;display:flex;overflow:hidden;min-height:0}#bottom-panels{height:220px;display:flex;border-top:1px solid var(--border-color);background:var(--bg-secondary)}.bottom-panel{flex:1;display:flex;flex-direction:column;overflow:hidden}.bottom-panel-left{border-right:1px solid var(--border-color)}.bottom-panel .panel-header{background:linear-gradient(135deg,#6366f11a,#8b5cf60d);border-bottom:1px solid var(--border-color)}.bottom-panel 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transparent}.log-item.info{border-left-color:var(--accent-blue);background:#3b82f61a}.log-item.success{border-left-color:var(--accent-success);background:#22c55e1a}.log-item.warning{border-left-color:var(--accent-warning);background:#f59e0b1a}.log-item.error{border-left-color:var(--accent-error);background:#ef44441a}#statusbar{position:fixed;bottom:0;left:72px;right:0;height:28px;background:var(--bg-secondary);border-top:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center;padding:0 16px;font-size:11px;color:var(--text-secondary);z-index:50}.status-left,.status-right{display:flex;gap:20px}.status-left .status-divider{color:var(--border-color);margin:0 4px}.status-blocks{display:inline-flex;align-items:center}@keyframes status-glow{0%{color:var(--text-secondary);text-shadow:none}40%{color:#ff6b6b;text-shadow:0 0 8px #ff6b6b,0 0 14px #ff4757}to{color:var(--text-secondary);text-shadow:none}}.status-glow{animation:status-glow 1.2s 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auto}.faq-header{text-align:center;margin-bottom:32px}.faq-header-icon{display:inline-flex;align-items:center;justify-content:center;width:64px;height:64px;background:linear-gradient(135deg,#f59e0b26,#fbbf2426);border-radius:16px;margin-bottom:16px;color:var(--accent-warning)}.faq-header h2{font-size:24px;font-weight:700;color:var(--text-primary);margin:0 0 8px}.faq-header p{font-size:14px;color:var(--text-secondary);margin:0}.faq-list{display:flex;flex-direction:column;gap:16px}.faq-item{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius);padding:20px;opacity:0;transform:translateY(20px);animation:faqFadeIn .4s ease forwards}.faq-item:nth-child(1){animation-delay:0s}.faq-item:nth-child(2){animation-delay:.05s}.faq-item:nth-child(3){animation-delay:.1s}.faq-item:nth-child(4){animation-delay:.15s}.faq-item:nth-child(5){animation-delay:.2s}@keyframes faqFadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.faq-question{display:flex;gap:8px;font-size:15px;font-weight:600;color:var(--text-primary);margin-bottom:12px}.faq-question span{color:var(--accent-primary);font-weight:700}.faq-answer{display:flex;gap:8px;font-size:14px;line-height:1.7;color:var(--text-secondary);padding-left:4px}.faq-answer span{color:var(--accent-success);font-weight:700}body.theme-light .guide-tabs{background:var(--bg-tertiary)}body.theme-light .guide-section{background:var(--bg-secondary);border-color:var(--border-color)}body.theme-light .guide-section-header:active{background:#00000008}body.theme-light .shortcut-item{background:var(--bg-secondary);border-color:var(--border-color)}body.theme-light .shortcut-key{background:var(--bg-tertiary);border-color:var(--border-color)}body.theme-light .faq-item{background:var(--bg-secondary);border-color:var(--border-color)}@media (max-width: 480px){.guide-page,.shortcuts-page,.faq-page{padding:16px}.guide-section-header,.guide-item{padding:14px 16px}}.guide-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;height:100%;background:var(--bg-primary);padding:40px;text-align:center}.guide-placeholder-icon{display:flex;align-items:center;justify-content:center;width:100px;height:100px;background:linear-gradient(135deg,#6366f11a,#8b5cf61a);border-radius:24px;margin-bottom:24px;color:var(--accent-primary)}.guide-placeholder-title{font-size:24px;font-weight:700;color:var(--text-primary);margin:0 0 12px}.guide-placeholder-desc{font-size:15px;color:var(--text-secondary);margin:0 0 24px}.guide-placeholder-hint{font-size:13px;color:var(--text-muted);margin:0;padding:8px 16px;background:var(--bg-secondary);border-radius:var(--radius-sm)}body.theme-light .guide-placeholder{background:var(--bg-primary)}body.theme-light .guide-placeholder-hint{background:var(--bg-secondary)}