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cubic-bezier(.5,1.6,.4,1);z-index:9999}.toast.show{transform:none}.toast.success{background:var(--success)}.toast.error{background:var(--danger)}.empty-state{text-align:center;padding:80px 20px;color:var(--ink-muted)}.empty-state .emoji{font-size:48px;margin-bottom:12px}.empty-state .text{font-size:14px}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:4px}::-webkit-scrollbar-track{background:transparent}@media (max-width: 1024px){.stat-grid{grid-template-columns:repeat(2,1fr)}.grid-2,.grid-2-equal{grid-template-columns:1fr}.grid-3{grid-template-columns:1fr;gap:12px}.hw-grid,.class-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 768px){.sidebar{transform:translate(-100%);transition:transform .25s ease;box-shadow:var(--shadow-lg)}.sidebar.open{transform:translate(0)}.main{margin-left:0;padding:16px}.search-box{width:100%}.topbar{flex-wrap:wrap;gap:10px}.stat-grid{grid-template-columns:1fr;gap:12px}.hw-grid,.class-grid{grid-template-columns:1fr}.page-title{font-size:18px}.chart-bars{height:160px;gap:8px}.bar-label{font-size:10px}}.mobile-menu-btn{display:none;width:36px;height:36px;border-radius:var(--radius-sm);background:var(--card);border:1px solid var(--line);align-items:center;justify-content:center;font-size:18px}@media (max-width: 768px){.mobile-menu-btn{display:grid}}.sidebar-mask{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;z-index:49}.sidebar-mask.show{display:block}