.doc-nav[data-astro-cid-yz7ex4pk]{justify-content:space-between;gap:var(--spacing-md);margin-top:var(--spacing-lg);padding-top:var(--spacing-lg);border-top:1px solid var(--color-border-light);max-width:var(--content-width);margin-left:auto;margin-right:auto;display:flex}.nav-btn[data-astro-cid-yz7ex4pk]{align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--color-border);background:var(--color-bg-card);color:var(--color-text-secondary);flex:1;min-width:0;text-decoration:none;display:flex}.nav-btn[data-astro-cid-yz7ex4pk]:hover{border-color:var(--color-primary);color:var(--color-primary)}.doc-nav[data-astro-cid-yz7ex4pk].single-btn{justify-content:flex-start}.doc-nav[data-astro-cid-yz7ex4pk].single-btn .nav-btn[data-astro-cid-yz7ex4pk]{flex:none}.nav-label[data-astro-cid-yz7ex4pk]{color:var(--color-text-tertiary);font-size:.68em;display:block}.nav-title[data-astro-cid-yz7ex4pk]{text-overflow:ellipsis;white-space:nowrap;font-size:.82em;font-weight:500;display:block;overflow:hidden}@media (width<=768px){.doc-nav[data-astro-cid-yz7ex4pk]{gap:var(--spacing-sm);flex-direction:row}.doc-nav[data-astro-cid-yz7ex4pk].single-btn{justify-content:flex-start}.doc-nav[data-astro-cid-yz7ex4pk].single-btn .nav-btn[data-astro-cid-yz7ex4pk]{flex:none}.nav-btn[data-astro-cid-yz7ex4pk]{padding:var(--spacing-xs) var(--spacing-sm);flex-direction:row}.nav-title[data-astro-cid-yz7ex4pk]{font-size:.75em}}.progress-toggle[data-v-d9a162f8]{align-items:center;gap:4px;display:inline-flex}.progress-btn[data-v-d9a162f8]{border:1px solid var(--color-border);height:32px;color:var(--color-text-secondary);font-size:.78em;font-family:var(--font-display);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;box-sizing:border-box;background:0 0;border-radius:0;align-items:center;gap:5px;padding:3px 10px;display:inline-flex}.progress-btn[data-v-d9a162f8]:hover{border-color:var(--color-primary);color:var(--color-primary)}.progress-default[data-v-d9a162f8],.progress-busy[data-v-d9a162f8]{align-items:center;gap:4px;display:inline-flex}.progress-saved[data-v-d9a162f8]{animation:.8s forwards progress-fade-in-out-d9a162f8}.progress-error[data-v-d9a162f8]{color:#ef4444}.progress-dot[data-v-d9a162f8]{background:var(--color-border);width:8px;height:8px;transition:background var(--transition-fast);border-radius:50%;flex-shrink:0}.status-unread .progress-dot[data-v-d9a162f8]{background:var(--color-border)}.status-reading .progress-dot[data-v-d9a162f8]{background:#f59e0b}.status-done .progress-dot[data-v-d9a162f8]{background:#10b981}.status-done .progress-btn[data-v-d9a162f8]{color:#10b981;border-color:#10b981}.progress-export[data-v-d9a162f8],.progress-import[data-v-d9a162f8]{border:1px solid var(--color-border);width:32px;height:32px;color:var(--color-text-tertiary);cursor:pointer;transition:all var(--transition-fast);box-sizing:border-box;background:0 0;border-radius:0;justify-content:center;align-items:center;padding:0;display:inline-flex}.progress-export[data-v-d9a162f8]:hover,.progress-import[data-v-d9a162f8]:hover{color:var(--color-primary);border-color:var(--color-primary)}@keyframes progress-spin-d9a162f8{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.progress-spin-icon[data-v-d9a162f8]{animation:1s linear infinite progress-spin-d9a162f8}@keyframes progress-fade-in-out-d9a162f8{0%{opacity:0}25%{opacity:1}75%{opacity:1}to{opacity:0}}.quiz-block[data-v-ff38db88]{margin-top:var(--spacing-xl);padding-top:var(--spacing-lg);border-top:1px solid var(--color-border-light)}.quiz-title[data-v-ff38db88]{font-family:var(--font-display);margin-bottom:var(--spacing-md);font-size:1.1em;font-weight:700}.quiz-list[data-v-ff38db88]{gap:var(--spacing-md);flex-direction:column;display:flex}.quiz-item[data-v-ff38db88]{padding:var(--spacing-md);border:1px solid var(--color-border-light);background:var(--color-bg-card)}.quiz-item.result-correct[data-v-ff38db88]{border-color:#10b981}.quiz-item.result-wrong[data-v-ff38db88]{border-color:#ef4444}.quiz-question[data-v-ff38db88]{margin-bottom:var(--spacing-sm);font-size:.92em;line-height:1.6}.quiz-number[data-v-ff38db88]{background:var(--color-primary);color:#fff;flex-shrink:0;justify-content:center;align-items:center;width:20px;height:20px;margin-right:6px;font-size:.75em;font-weight:700;display:inline-flex}.quiz-type-badge[data-v-ff38db88]{background:var(--color-bg-hover);color:var(--color-text-secondary);margin-right:6px;padding:1px 6px;font-size:.75em;display:inline-block}.quiz-answer-area[data-v-ff38db88]{gap:var(--spacing-sm);margin-top:var(--spacing-sm);align-items:flex-start;display:flex}.quiz-input[data-v-ff38db88]{border:1px solid var(--color-border);background:var(--color-bg);color:var(--color-text);font-size:.88em;font-family:var(--font-display);outline:none;flex:1;padding:6px 10px}.quiz-input[data-v-ff38db88]:focus{border-color:var(--color-primary)}.quiz-textarea[data-v-ff38db88]{border:1px solid var(--color-border);background:var(--color-bg);color:var(--color-text);font-size:.85em;font-family:var(--font-mono,monospace);resize:vertical;outline:none;flex:1;padding:6px 10px}.quiz-textarea[data-v-ff38db88]:focus{border-color:var(--color-primary)}.quiz-code[data-v-ff38db88]{width:100%;padding:var(--spacing-sm);background:var(--color-bg);border:1px solid var(--color-border-light);margin-bottom:var(--spacing-xs);font-size:.82em;overflow-x:auto}.quiz-submit-btn[data-v-ff38db88]{border:1px solid var(--color-border);color:var(--color-text-secondary);cursor:pointer;white-space:nowrap;background:0 0;padding:6px 14px;font-size:.85em}.quiz-submit-btn[data-v-ff38db88]:hover{border-color:var(--color-primary);color:var(--color-primary)}.quiz-options[data-v-ff38db88]{margin-top:var(--spacing-sm);flex-direction:column;gap:4px;display:flex}.quiz-option[data-v-ff38db88]{align-items:center;gap:var(--spacing-sm);border:1px solid var(--color-border-light);background:var(--color-bg);color:var(--color-text);cursor:pointer;text-align:left;transition:all var(--transition-fast);padding:6px 10px;font-size:.88em;display:flex}.quiz-option[data-v-ff38db88]:hover:not(:disabled){border-color:var(--color-primary)}.quiz-option.selected[data-v-ff38db88]{border-color:var(--color-primary);background:var(--color-bg-hover)}.quiz-option.correct[data-v-ff38db88]{color:#10b981;background:#10b98114;border-color:#10b981}.quiz-option.wrong[data-v-ff38db88]{color:#ef4444;background:#ef444414;border-color:#ef4444}.option-letter[data-v-ff38db88]{border:1px solid var(--color-border);flex-shrink:0;justify-content:center;align-items:center;width:20px;height:20px;font-size:.78em;font-weight:600;display:inline-flex}.quiz-feedback[data-v-ff38db88]{margin-top:var(--spacing-sm);gap:var(--spacing-sm);flex-wrap:wrap;align-items:baseline;font-size:.85em;display:flex}.feedback-correct[data-v-ff38db88]{color:#10b981;font-weight:600}.feedback-wrong[data-v-ff38db88]{color:#ef4444;font-weight:600}.feedback-answer[data-v-ff38db88],.feedback-explanation[data-v-ff38db88]{color:var(--color-text-secondary)}.feedback-hint[data-v-ff38db88]{color:#f59e0b}.doc-page[data-astro-cid-jw3tkfuh]{padding:var(--spacing-md) var(--spacing-lg) var(--spacing-2xl);width:100%;max-width:var(--content-width,1280px);min-height:100%;margin-inline:auto;position:relative}.doc-page[data-astro-cid-jw3tkfuh]>[data-astro-cid-jw3tkfuh]:not(.geo-bg-decor){z-index:1;position:relative}.prereq-notice[data-astro-cid-jw3tkfuh]{align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);margin-bottom:var(--spacing-md);background:var(--color-bg-card);border:1px solid var(--color-border-light);color:var(--color-text-secondary);border-left:3px solid #f59e0b;font-size:.85em;display:flex}.prereq-notice[data-astro-cid-jw3tkfuh] svg[data-astro-cid-jw3tkfuh]{color:#f59e0b;flex-shrink:0}.prereq-notice[data-astro-cid-jw3tkfuh] a[data-astro-cid-jw3tkfuh]{color:var(--color-primary);text-decoration:none}.prereq-notice[data-astro-cid-jw3tkfuh] a[data-astro-cid-jw3tkfuh]:hover{text-decoration:underline}.doc-header[data-astro-cid-jw3tkfuh]{margin-bottom:var(--spacing-lg);padding-bottom:var(--spacing-lg);border-bottom:1px solid var(--color-border-light)}.doc-title-row[data-astro-cid-jw3tkfuh]{z-index:20;background:var(--color-bg);justify-content:space-between;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) 0;border-bottom:1px solid var(--color-border-light);margin-bottom:var(--spacing-sm);display:flex;position:sticky;top:0}.doc-header[data-astro-cid-jw3tkfuh]{margin-bottom:var(--spacing-xl)}.doc-title-row[data-astro-cid-jw3tkfuh] .doc-title[data-astro-cid-jw3tkfuh]{margin-bottom:0}.doc-title[data-astro-cid-jw3tkfuh]{margin-bottom:var(--spacing-sm);font-size:1.6em;line-height:1.3}.doc-meta[data-astro-cid-jw3tkfuh]{align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-sm);flex-wrap:wrap;display:flex}.doc-meta-item[data-astro-cid-jw3tkfuh]{font-family:var(--font-display);color:var(--color-text-tertiary);align-items:center;gap:4px;font-size:.78em;display:inline-flex}.doc-difficulty[data-astro-cid-jw3tkfuh]{letter-spacing:.02em;border-radius:3px;padding:2px 8px;font-weight:500}.diff-beginner[data-astro-cid-jw3tkfuh]{color:#2e7d32;background:#e8f5e9}.diff-intermediate[data-astro-cid-jw3tkfuh]{color:#e65100;background:#fff3e0}.diff-advanced[data-astro-cid-jw3tkfuh]{color:#c62828;background:#fce4ec}:root[data-theme=dark] .diff-beginner[data-astro-cid-jw3tkfuh]{color:#81c784;background:#1b3a1b}:root[data-theme=dark] .diff-intermediate[data-astro-cid-jw3tkfuh]{color:#ffb74d;background:#3e2723}:root[data-theme=dark] .diff-advanced[data-astro-cid-jw3tkfuh]{color:#ef9a9a;background:#3b1010}.doc-tags[data-astro-cid-jw3tkfuh]{margin-top:var(--spacing-sm);flex-wrap:wrap;gap:6px;display:flex}.doc-tag[data-astro-cid-jw3tkfuh]{font-size:.72em;font-family:var(--font-display);color:var(--color-text-secondary);background:var(--color-bg-card);border:1px solid var(--color-border-light);transition:all var(--transition-fast);padding:2px 10px;text-decoration:none;display:inline-block}.doc-tag[data-astro-cid-jw3tkfuh]:hover{color:var(--color-primary);border-color:var(--color-primary);background:var(--color-bg-hover)}.doc-description[data-astro-cid-jw3tkfuh]{margin-top:var(--spacing-sm);color:var(--color-text-secondary);font-size:.92em;line-height:1.6}@media (width<=768px){.doc-page[data-astro-cid-jw3tkfuh]{padding:var(--spacing-sm) var(--spacing-md) var(--spacing-2xl)}.doc-title[data-astro-cid-jw3tkfuh]{font-size:1.3em}.doc-meta[data-astro-cid-jw3tkfuh]{gap:6px}}