._page_kdva2_1{max-width:1200px;margin:0 auto;width:100%;padding:var(--spacing-8) var(--spacing-6) var(--spacing-16);display:flex;flex-direction:column;gap:var(--spacing-6)}._topNav_kdva2_11{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-4);flex-wrap:wrap}._backLink_kdva2_19{display:inline-flex;align-items:center;gap:var(--spacing-2);color:var(--muted-foreground);text-decoration:none;font-size:.9375rem}._backLink_kdva2_19:hover{color:var(--primary)}._position_kdva2_32{font-family:var(--font-family-monospace);font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted-foreground)}._layout_kdva2_40{display:grid;grid-template-columns:1fr;gap:2.5rem;align-items:start}._main_kdva2_47{display:flex;flex-direction:column;gap:var(--spacing-6);min-width:0}._header_kdva2_54{display:flex;flex-direction:column;gap:var(--spacing-2);padding-bottom:1.25rem;border-bottom:3px solid var(--foreground)}._moduleName_kdva2_62{font-family:var(--font-family-monospace);font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);margin:0}._title_kdva2_71{font-family:var(--font-family-heading);font-size:2.25rem;font-weight:800;line-height:1.1;letter-spacing:-.02em;color:var(--foreground);margin:0}._duration_kdva2_81{color:var(--muted-foreground);font-size:.875rem;margin:0}._video_kdva2_87{position:relative;width:100%;aspect-ratio:16 / 9;background-color:var(--foreground)}._video_kdva2_87 iframe{position:absolute;inset:0;width:100%;height:100%;border:0}._emptyLesson_kdva2_102{color:var(--muted-foreground);font-style:italic;margin:0}._completeBar_kdva2_108{display:flex;flex-direction:column;gap:var(--spacing-4);padding-top:var(--spacing-6);border-top:1px solid var(--border)}._signInNote_kdva2_116{color:var(--muted-foreground);font-size:.9375rem;margin:0}._signInNote_kdva2_116 a{color:var(--primary)}._pager_kdva2_126{display:flex;gap:var(--spacing-3);flex-wrap:wrap}._sidebar_kdva2_133{display:flex;flex-direction:column;gap:1.25rem;padding:1.25rem;background-color:var(--surface);border:1px solid var(--border)}._sidebarHead_kdva2_142{display:flex;align-items:center;gap:var(--spacing-2);font-family:var(--font-family-monospace);font-size:.6875rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted-foreground)}._progress_kdva2_153{display:flex;flex-direction:column;gap:var(--spacing-2)}._progressTrack_kdva2_159{height:6px;width:100%;background-color:var(--muted)}._progressFill_kdva2_165{height:100%;background-color:var(--success);transition:width var(--animation-duration-normal) ease}._progressLabel_kdva2_171{font-size:.8125rem;color:var(--muted-foreground)}._sidebarModule_kdva2_176{display:flex;flex-direction:column;gap:var(--spacing-2)}._sidebarModuleTitle_kdva2_182{font-family:var(--font-family-heading);font-size:.9375rem;font-weight:700;color:var(--foreground);margin:0}._sidebarLessons_kdva2_190{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}._sidebarLesson_kdva2_190{display:flex;align-items:center;gap:var(--spacing-2);padding:var(--spacing-2) var(--spacing-2);text-decoration:none;color:var(--muted-foreground);font-size:.875rem;line-height:1.4;border-left:2px solid transparent}._sidebarLesson_kdva2_190:hover{background-color:var(--sidebar);color:var(--foreground)}._sidebarLessonActive_kdva2_215{border-left-color:var(--accent);background-color:var(--sidebar);color:var(--foreground);font-weight:600}._sidebarMark_kdva2_222{display:inline-flex;flex-shrink:0;color:var(--muted-foreground)}._sidebarLessonActive_kdva2_215 ._sidebarMark_kdva2_222{color:var(--accent)}._sidebarLessonTitle_kdva2_232{flex-grow:1}._sidebarDuration_kdva2_236{font-family:var(--font-family-monospace);font-size:.6875rem;color:var(--muted-foreground);flex-shrink:0}._errorPage_kdva2_244{max-width:36rem;margin:0 auto;padding:var(--spacing-20) var(--spacing-6);text-align:center;display:flex;flex-direction:column;align-items:center;gap:var(--spacing-4)}._errorTitle_kdva2_255{font-family:var(--font-family-heading);font-size:2rem;font-weight:800;margin:0}._errorBody_kdva2_262{color:var(--muted-foreground);margin:0}@media(min-width:960px){._layout_kdva2_40{grid-template-columns:minmax(0,1fr) 20rem}._sidebar_kdva2_133{position:sticky;top:calc(var(--header-height) + var(--spacing-6));max-height:calc(100vh - var(--header-height) - var(--spacing-12));overflow-y:auto}._completeBar_kdva2_108{flex-direction:row;align-items:center;justify-content:space-between}}