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var(--ease);box-shadow:var(--shadow-lg);position:fixed;top:0;bottom:0;left:0;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.page-container{padding:20px 16px}.topbar{padding:10px 16px}h1{font-size:24px}.hero{padding:22px}}.sidebar-backdrop{display:none}@media (width<=760px){.sidebar-backdrop.show{z-index:50;background:#0d1c2e73;display:block;position:fixed;inset:0}}.menu-toggle{display:none}@media (width<=760px){.menu-toggle{display:grid}}.toaster{z-index:100;flex-direction:column;gap:10px;display:flex;position:fixed;bottom:24px;right:24px}.toast{border-radius:var(--radius-md);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-lg);color:var(--ink);min-width:240px;animation:toast-in .22s var(--ease);align-items:center;gap:10px;padding:12px 14px;font-size:14px;font-weight:500;display:flex}@keyframes toast-in{0%{opacity:0;transform:translateY(10px)scale(.97)}}.toast-icon{border-radius:var(--radius-full);color:#fff;flex-shrink:0;place-items:center;width:24px;height:24px;display:grid}.toast-success .toast-icon{background:var(--green-500)}.toast-error .toast-icon{background:var(--rose-500)}.toast-close{color:var(--subtle);cursor:pointer;border-radius:var(--radius-xs);background:0 0;border:none;flex-shrink:0;place-items:center;width:24px;height:24px;margin-left:auto;display:grid}.toast-close:hover{color:var(--ink)}@media (width<=760px){.toaster{bottom:16px;left:16px;right:16px}}.sidebar-search{margin:0 2px 8px;position:relative}.sidebar-search input{border:1px solid var(--sidebar-border);border-radius:var(--radius-sm);color:#fff;width:100%;transition:border-color .15s var(--ease), background .15s var(--ease);background:#ffffff12;padding:8px 10px 8px 32px;font-family:inherit;font-size:13px}.sidebar-search input::placeholder{color:#ffffff6b}.sidebar-search input:focus{border-color:var(--blue-400);box-shadow:none;background:#ffffff1c;outline:none}.sidebar-search .search-icon{color:#ffffff73;pointer-events:none;display:grid;position:absolute;top:50%;left:10px;transform:translateY(-50%)}.dot-new{background:var(--lime-500);border-radius:50%;flex-shrink:0;width:7px;height:7px;margin-left:auto}.sidebar-progress{padding:2px 12px 10px}.sidebar-progress .progress{background:#ffffff1f;height:4px}.sidebar-progress-label{color:var(--sidebar-fg);opacity:.6;justify-content:space-between;margin-bottom:5px;font-size:11px;display:flex}.module-nav{border-top:1px solid var(--border);justify-content:space-between;gap:12px;margin-top:40px;padding-top:24px;display:flex}.module-nav-btn{border-radius:var(--radius-md);border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow-xs);max-width:46%;transition:box-shadow .16s var(--ease), transform .16s var(--ease), border-color .16s var(--ease);color:var(--ink);align-items:center;gap:12px;padding:14px 18px;display:flex}.module-nav-btn:hover{box-shadow:var(--shadow-md);border-color:var(--border-strong);transform:translateY(-1px)}.module-nav-btn.next{text-align:right;flex-direction:row-reverse;margin-left:auto}.module-nav-dir{letter-spacing:.07em;text-transform:uppercase;color:var(--subtle);font-size:11px;font-weight:700}.module-nav-title{-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:14px;font-weight:600;line-height:1.3;display:-webkit-box;overflow:hidden}.crumbs{color:var(--muted);flex-wrap:wrap;align-items:center;gap:7px;margin-bottom:10px;font-size:13px;display:flex}.crumbs a:hover{color:var(--blue-600)}.crumbs svg{opacity:.5}