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.course-code__copy:focus-visible{color:var(--color-brand-700);border-color:var(--color-brand-border)}.course-content .course-code__copy.is-copied{color:#15803d;border-color:#22c55e47}.course-content pre{display:block;max-width:100%;overflow-x:auto;padding:var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface-muted);white-space:pre-wrap}.course-content blockquote{margin:var(--space-4) 0;padding:var(--space-3) var(--space-4);border-left:3px solid var(--color-brand-500);border-radius:0 var(--radius-md) var(--radius-md) 0;background:var(--color-brand-surface);color:var(--color-text-muted)}.course-content pre,.course-content code{font-family:var(--font-mono)}.course-content code{display:inline-block;max-width:100%;padding:0;border-radius:.4rem;background:var(--color-surface-muted);font-size:.9em;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word}.course-content .course-code--block>code,.course-content .course-code--block>pre{padding-right:2.6rem}.course-content .course-code--block>code{display:block;box-sizing:border-box;width:100%;padding-top:0;padding-bottom:0;padding-left:0}.course-content pre code{display:block;padding:0;border-radius:0;background:none;font-size:inherit}.course-content table{width:100%;max-width:100%;margin:var(--space-4) 0;border-collapse:collapse;background:#eaf4fb;font-size:.875rem;line-height:1.6}.course-content th,.course-content td{padding:.7rem .85rem;border:1px solid #c4d5e3;background:#eaf4fb;color:var(--color-text);text-align:left;vertical-align:top;font-weight:400}.course-content th,.course-content table:not(:has(thead)) tr:first-child td{background:#b7d6ed;font-weight:600}.course-content table p{margin:0}.course-content .feishu-sheet-note,.course-content .feishu-bitable-note{margin:var(--space-3) 0 0;color:var(--color-text-muted);font-size:.8125rem}.course-content hr{margin:var(--space-8) 0;border:0;border-top:1px solid var(--color-border)}.course-content a{color:var(--color-brand-600);text-decoration:underline;text-decoration-color:var(--color-brand-border);text-underline-offset:.2em}.course-content a:hover{text-decoration-color:currentcolor}.course-content a.attachment{display:inline-block;margin:0 0 1em;padding:6px 12px;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface-muted);color:var(--color-brand-600);text-decoration:none}.course-content .feishu-todo{list-style:none;padding-left:0}.course-content .feishu-unsupported{display:block;margin:var(--space-4) 0;padding:var(--space-3);border:1px dashed var(--color-border);border-radius:var(--radius-md);background:var(--color-surface-muted);color:var(--color-text-muted)}