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0;border:none;justify-content:center;align-items:center;text-decoration:none;display:inline-flex}.course-nav-button:hover:not(:disabled),.course-nav-link:hover{color:var(--link)}.course-nav-button{text-underline-offset:2px;text-decoration:underline}.course-nav-button:disabled{opacity:.6;cursor:not-allowed}.course-lesson-done{font-size:var(--text-sm);font-weight:var(--weight-bold);color:var(--bm-build);flex-shrink:0;margin-left:auto}.course-progress-note{color:var(--text-muted)}.course-progress-error,.course-progress-note{margin-top:var(--space-4);font-size:var(--text-sm)}.course-progress-button,.course-progress-error{color:var(--text-primary)}.course-progress-button{margin-top:var(--space-4);border-radius:var(--radius-pill);padding:var(--space-2) var(--space-5);font-size:var(--text-sm);font-weight:var(--weight-bold);border:1px solid var(--border-default);background:var(--surface-card);cursor:pointer}.course-progress-button--done{background:var(--text-primary);color:var(--text-inverse);border-color:var(--text-primary)}.course-progress-button:disabled{opacity:.6;cursor:not-allowed}.lesson-page-main{max-width:28rem;margin-inline:auto}.lesson-experience{gap:var(--space-5);flex-direction:column;display:flex}.lesson-experience-header{gap:var(--space-3);flex-direction:column;display:flex}.lesson-experience-meta{align-items:center;gap:var(--space-2);flex-wrap:wrap;display:flex}.lesson-day-badge,.lesson-stage-label{font-family:var(--font-learning);font-size:var(--text-sm);font-weight:var(--weight-bold);color:var(--text-muted)}.lesson-experience-title{font-family:var(--font-display);font-size:var(--text-xl);font-weight:var(--weight-bold);color:var(--text-primary);margin:0;line-height:1.25}.lesson-experience-subtitle{font-size:var(--text-md);color:var(--text-muted);margin:0}.lesson-sequence-label{font-family:var(--font-learning);font-size:var(--text-sm);font-weight:var(--weight-bold);color:var(--text-body);margin:0}.lesson-media-switch{gap:var(--space-2);padding:var(--space-1);border-radius:var(--radius-md);background:var(--surface-muted);grid-template-columns:1fr 1fr;display:grid}.lesson-media-switch-btn{border-radius:var(--radius-sm);min-height:44px;font-family:var(--font-learning);font-size:var(--text-sm);font-weight:var(--weight-bold);color:var(--text-muted);cursor:pointer;background:0 0;border:1px solid #0000}.lesson-media-switch-btn--active{background:var(--surface-card);color:var(--text-primary);border-color:var(--border-default)}.lesson-media-switch-btn:disabled{opacity:.55;cursor:not-allowed}.lesson-media-switch-btn:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}.lesson-media-panel{border-radius:var(--radius-md);background:var(--surface-muted);overflow:hidden}.lesson-native-media{background:#000;width:100%;max-height:min(70vw,20rem);display:block}.lesson-native-media--audio{width:100%;margin-top:var(--space-3)}.lesson-audio-shell{padding:var(--space-4);align-items:center;gap:var(--space-3);flex-direction:column;display:flex}.lesson-audio-cover{aspect-ratio:1;object-fit:cover;border-radius:var(--radius-md);width:min(100%,16rem);height:auto}.lesson-audio-cover--fallback{background:var(--surface-card);border:1px solid var(--border-default);justify-content:center;align-items:center;display:flex}.lesson-media-fallback{align-items:center;gap:var(--space-4);padding:var(--space-6) var(--space-4);text-align:center;flex-direction:column;display:flex}.lesson-media-fallback-mark{opacity:.85}.lesson-empty-state,.lesson-media-fallback-copy,.lesson-media-unavailable{font-size:var(--text-sm);color:var(--text-muted);max-width:22rem;margin:0}.lesson-tab-bar{gap:var(--space-1);border-bottom:1px solid var(--border-default);grid-template-columns:repeat(3,1fr);display:grid}.lesson-tab-btn{min-height:44px;font-family:var(--font-learning);font-size:var(--text-sm);font-weight:var(--weight-bold);color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000}.lesson-tab-btn--active{color:var(--text-primary);border-bottom-color:var(--text-primary)}.lesson-tab-btn:focus-visible{outline:2px solid var(--focus-ring);outline-offset:-2px}.lesson-tab-panel{padding-block:var(--space-2)}.lesson-tab-content{gap:var(--space-4);flex-direction:column;display:flex}.lesson-experience-description{color:var(--text-body);margin:0;line-height:1.55}.lesson-resource-list{gap:var(--space-3);flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.lesson-resource-link{color:var(--text-primary);font-weight:var(--weight-bold)}@media (max-width:480px){.course-main{padding-inline:var(--space-3)}.course-lesson-row{gap:var(--space-2);flex-wrap:wrap}.course-nav-links{justify-content:flex-start;width:100%;margin-left:0}}.course-access-pending{margin-top:var(--space-6);padding:var(--space-6);border:1px solid var(--border-default);border-radius:var(--radius-md);background:var(--surface-card)}.course-access-pending-title{font-family:var(--font-display);font-size:var(--text-xl);margin:0 0 var(--space-3);color:var(--text-primary)}.course-lesson-row--locked{opacity:.72;cursor:not-allowed}.course-method-strip-wrap{margin:var(--space-5) 0 var(--space-6)}.course-lesson-list-note{margin-top:var(--space-4);font-size:var(--text-sm);color:var(--text-muted)}.lesson-experience--introduction{max-width:40rem}.lesson-intro-video-panel{margin-top:var(--space-6);aspect-ratio:16/9;background:var(--bm-ink);border-radius:var(--radius-md);overflow:hidden}.lesson-intro-video{object-fit:contain;background:var(--bm-ink);width:100%;height:100%;display:block}.lesson-intro-guidance{margin:var(--space-4) 0 0;font-size:var(--text-sm);color:var(--text-body)}.lesson-intro-method{margin:var(--space-5) 0}.lesson-intro-actions{margin-top:var(--space-4)}body{background:var(--surface-page);color:var(--text-body);font-family:var(--font-learning);margin:0}.course-header{border-bottom:1px solid #00000014;padding:12px 24px}.course-header-inner{justify-content:space-between;align-items:center;gap:16px;max-width:720px;margin:0 auto;display:flex}.course-header-home{color:inherit;font-size:15px;font-weight:700;text-decoration:none}.course-header-home:hover{text-decoration:underline}@media (prefers-color-scheme:dark){.course-header{border-bottom-color:#ffffff25}}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}