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var(--color-border);background:var(--color-text);margin:0 0 12px;padding:12px 14px}@supports (color:color-mix(in lab,red,red)){.prose pre{background:color-mix(in srgb,var(--color-text) 4%,var(--color-surface))}}.prose pre{overflow-x:auto}.prose pre code{background:0 0;padding:0;font-size:12.5px;line-height:1.6}.editor-shell{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);overflow:hidden}.editor-bar{border-bottom:1px solid var(--color-border);background:var(--color-text);align-items:center;gap:8px;padding:7px 10px;display:flex}@supports (color:color-mix(in lab,red,red)){.editor-bar{background:color-mix(in srgb,var(--color-text) 3%,var(--color-surface))}}.editor-bar{color:var(--color-text-muted);font-size:12px}.cm-editor{font-size:13px}.cm-editor .cm-scroller{font-family:ui-monospace,Menlo,Consolas,monospace;line-height:1.6}.cm-editor.cm-focused{outline:none}.console{border-top:1px solid var(--color-border);background:var(--color-text)}@supports (color:color-mix(in lab,red,red)){.console{background:color-mix(in srgb,var(--color-text) 4%,var(--color-surface))}}.console{white-space:pre-wrap;word-break:break-word;max-height:260px;padding:10px 12px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;line-height:1.55;overflow:auto}.console-label{font-family:var(--font-sans);text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-faint);margin-bottom:4px;font-size:11px}.console-err{color:var(--color-danger)}.console-ok{color:var(--color-success)}.question-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:20px}.question-stem{margin-bottom:14px;font-size:15.5px;font-weight:550;line-height:1.55}.option{text-align:left;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);width:100%;color:var(--color-text);align-items:flex-start;gap:10px;margin-bottom:8px;padding:11px 13px;font-size:13.5px;line-height:1.5;transition:border-color .12s,background .12s;display:flex}.option:hover:not(:disabled){border-color:var(--color-primary)}.option.selected{border-color:var(--color-primary);background:var(--color-primary-soft)}.option.correct{border-color:var(--color-success);background:var(--color-success-soft)}.option.wrong{border-color:var(--color-danger);background:var(--color-danger-soft)}.option:disabled{cursor:default}.option-key{background:var(--color-text-faint);border-radius:5px;flex-shrink:0;place-items:center;width:20px;height:20px;font-size:11px;font-weight:700;display:grid}@supports (color:color-mix(in lab,red,red)){.option-key{background:color-mix(in srgb,var(--color-text-faint) 18%,transparent)}}.option-key{color:var(--color-text-muted);margin-top:1px}.option.selected .option-key,.option.correct .option-key{background:var(--color-primary);color:#fff}.option.wrong .option-key{background:var(--color-danger);color:#fff}.feedback{border-radius:var(--radius-md);border:1px solid var(--color-border);margin-top:14px;padding:14px 16px;font-size:13.5px;line-height:1.6}.feedback.is-correct{border-color:var(--color-success);background:var(--color-success-soft)}.feedback.is-wrong{border-color:var(--color-danger);background:var(--color-danger-soft)}.feedback-head{align-items:center;gap:7px;margin-bottom:6px;font-weight:650;display:flex}.hint-box{border-radius:var(--radius-md);border:1px dashed var(--color-warning);background:var(--color-warning-soft);margin-top:12px;padding:12px 14px;font-size:13.5px;line-height:1.6}.qnav{flex-wrap:wrap;gap:6px;display:flex}.qnav-dot{border-radius:var(--radius-sm);border:1px solid var(--color-border);background:var(--color-surface);width:30px;height:30px;color:var(--color-text-muted);font-variant-numeric:tabular-nums;font-size:12px;font-weight:600}.qnav-dot.current{border-color:var(--color-primary);color:var(--color-primary)}.qnav-dot.ok{background:var(--color-success);border-color:var(--color-success);color:#fff}.qnav-dot.ko{background:var(--color-danger);border-color:var(--color-danger);color:#fff}.chapter-head{text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-faint);align-items:center;gap:10px;margin:26px 0 12px;font-size:12px;font-weight:650;display:flex}.chapter-head:after{content:"";background:var(--color-border);flex:1;height:1px}.chapter-head:first-child{margin-top:0}.stack{flex-direction:column;gap:16px;display:flex}.row{align-items:center;gap:10px;display:flex}.row-wrap{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.spacer{margin-left:auto}.muted{color:var(--color-text-muted)}.faint{color:var(--color-text-faint);font-size:12.5px}.nums{font-variant-numeric:tabular-nums}.lang-toggle{border:1px solid var(--color-border);border-radius:var(--radius-sm);display:inline-flex;overflow:hidden}.lang-toggle button{background:var(--color-surface);color:var(--color-text-muted);border:0;padding:5px 10px;font-size:12px;font-weight:600}.lang-toggle button.active{background:var(--color-primary);color:#fff}.empty{text-align:center;color:var(--color-text-muted);padding:48px 20px}.auth-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);width:100%;max-width:380px;box-shadow:var(--shadow-md);padding:28px}.auth-screen{background:var(--color-bg);place-items:center;min-height:100vh;padding:24px;display:grid}.btn-ghost{color:var(--color-text-muted);background:0 0;border-color:#0000}.btn-ghost:hover:not(:disabled){background:var(--color-text-faint)}@supports (color:color-mix(in lab,red,red)){.btn-ghost:hover:not(:disabled){background:color-mix(in srgb,var(--color-text-faint) 12%,transparent)}}.btn-ghost:hover:not(:disabled){color:var(--color-text)}.btn-sm{border-radius:var(--radius-sm);padding:5px 10px;font-size:12.5px}.btn-block{justify-content:center;width:100%}.badge-primary{background:var(--color-primary-soft);color:var(--color-primary-hover)}.input{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);width:100%;color:var(--color-text);padding:9px 12px}.input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-soft);outline:none}.split{grid-template-columns:1fr 300px;align-items:start;gap:18px;display:grid}@media(max-width:1000px){.split{grid-template-columns:1fr}}.module-picker{flex-direction:column;gap:5px;padding:0 10px 14px;display:flex}.module-picker label{text-transform:uppercase;letter-spacing:.06em;color:var(--color-sidebar-text);opacity:.7;font-size:10.5px}.module-picker select{color:#fff;border-radius:var(--radius-sm);background:#ffffff0f;border:1px solid #ffffff1f;padding:7px 9px;font-size:13px;font-weight:500}.module-picker select:focus{border-color:var(--color-primary);outline:none}.module-picker option{background:var(--color-sidebar-bg);color:#fff}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}