.course-sidebar[data-astro-cid-6munbmg7]{width:300px;background:var(--bg-elevated);border-right:1px solid var(--border);height:calc(100vh - 64px);position:sticky;top:64px;overflow-y:auto;flex-shrink:0}.sidebar-header[data-astro-cid-6munbmg7]{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--border)}.sidebar-back[data-astro-cid-6munbmg7]{color:var(--accent);text-decoration:none;font-size:var(--fs-sm);font-weight:var(--fw-medium)}.sidebar-back[data-astro-cid-6munbmg7]:hover{text-decoration:underline}.sidebar-toggle[data-astro-cid-6munbmg7]{display:none;background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px}.sidebar-modules[data-astro-cid-6munbmg7]{padding:8px 0}.module-header[data-astro-cid-6munbmg7]{display:flex;flex-wrap:wrap;align-items:center;gap:8px;width:100%;padding:12px 20px;background:none;border:none;color:var(--text-bright);cursor:pointer;text-align:left;font-family:var(--font-heading)}.module-label[data-astro-cid-6munbmg7]{font-size:var(--fs-xs);color:var(--accent);font-weight:var(--fw-semibold);text-transform:uppercase;letter-spacing:.05em;width:100%}.module-title[data-astro-cid-6munbmg7]{font-size:var(--fs-sm);font-weight:var(--fw-semibold);flex:1}.module-chevron[data-astro-cid-6munbmg7]{transition:transform var(--transition-fast)}.module-header[data-astro-cid-6munbmg7][aria-expanded=false] .module-chevron[data-astro-cid-6munbmg7]{transform:rotate(-90deg)}.module-header[data-astro-cid-6munbmg7][aria-expanded=false]+.module-lessons[data-astro-cid-6munbmg7]{display:none}.module-lessons[data-astro-cid-6munbmg7]{list-style:none;padding:0;margin:0}.lesson-item[data-astro-cid-6munbmg7] a[data-astro-cid-6munbmg7]{display:flex;align-items:center;gap:10px;padding:8px 20px 8px 32px;color:var(--text-muted);text-decoration:none;font-size:var(--fs-sm);transition:background var(--transition-fast),color var(--transition-fast)}.lesson-item[data-astro-cid-6munbmg7] a[data-astro-cid-6munbmg7]:hover{background:var(--bg-card);color:var(--text-bright)}.lesson-item[data-astro-cid-6munbmg7].active a[data-astro-cid-6munbmg7]{background:var(--bg-card);color:var(--accent);border-left:3px solid var(--accent);padding-left:29px}.lesson-check[data-astro-cid-6munbmg7]{width:16px;height:16px;border:2px solid var(--border-light);border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center}.lesson-check[data-astro-cid-6munbmg7].completed{background:var(--func-green);border-color:var(--func-green)}.lesson-check[data-astro-cid-6munbmg7].completed:after{content:"✓";color:#fff;font-size:10px;font-weight:700}.lesson-title[data-astro-cid-6munbmg7]{flex:1;line-height:1.3}.lesson-lock[data-astro-cid-6munbmg7]{font-size:12px;flex-shrink:0}@media(max-width:900px){.course-sidebar[data-astro-cid-6munbmg7]{position:fixed;left:-300px;top:64px;z-index:100;transition:left var(--transition-base)}.course-sidebar[data-astro-cid-6munbmg7].open{left:0}.sidebar-toggle[data-astro-cid-6munbmg7]{display:block}}.course-quiz[data-astro-cid-ugrvwby7]{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;margin-top:40px}.quiz-header[data-astro-cid-ugrvwby7]{font-size:var(--fs-2xl);color:var(--text-bright);margin:0 0 24px}.quiz-question[data-astro-cid-ugrvwby7]{margin-bottom:28px;padding-bottom:28px;border-bottom:1px solid var(--border)}.quiz-question[data-astro-cid-ugrvwby7]:last-child{margin-bottom:0;padding-bottom:0;border-bottom:none}.question-text[data-astro-cid-ugrvwby7]{color:var(--text-bright);font-size:var(--fs-lg);margin:0 0 16px;line-height:1.5}.question-options[data-astro-cid-ugrvwby7]{display:flex;flex-direction:column;gap:8px}.quiz-option[data-astro-cid-ugrvwby7]{text-align:left;padding:12px 16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text);font-size:var(--fs-base);cursor:pointer;transition:border-color var(--transition-fast),background var(--transition-fast);font-family:var(--font-body)}.quiz-option[data-astro-cid-ugrvwby7]:hover:not(.selected){border-color:var(--accent);background:var(--bg-card-hover)}.quiz-option[data-astro-cid-ugrvwby7].correct{border-color:var(--func-green);background:var(--func-green-bg);color:var(--func-green)}.quiz-option[data-astro-cid-ugrvwby7].incorrect{border-color:var(--func-red);background:var(--func-red-bg);color:var(--func-red)}.quiz-option[data-astro-cid-ugrvwby7].selected{cursor:default}.quiz-option[data-astro-cid-ugrvwby7].reveal-correct{border-color:var(--func-green-border)}.quiz-explanation[data-astro-cid-ugrvwby7]{display:none;margin-top:12px;padding:12px 16px;background:var(--func-blue-bg);border-left:3px solid var(--func-blue);border-radius:0 var(--radius-md) var(--radius-md) 0;color:var(--text);font-size:var(--fs-sm);line-height:1.5}.quiz-explanation[data-astro-cid-ugrvwby7].visible{display:block}.gated-content[data-astro-cid-mic6svp2]{max-height:400px;overflow:hidden;position:relative}.gated-content[data-astro-cid-mic6svp2].unlocked{max-height:none;overflow:visible}.gated-content[data-astro-cid-mic6svp2]:not(.unlocked):after{content:"";position:absolute;bottom:0;left:0;right:0;height:200px;background:linear-gradient(transparent,var(--bg));pointer-events:none}.gate-overlay[data-astro-cid-mic6svp2]{display:flex;justify-content:center;margin-top:-60px;position:relative;z-index:10}.gate-overlay[data-astro-cid-mic6svp2].hidden{display:none}.gate-card[data-astro-cid-mic6svp2]{background:var(--bg-card);border:1px solid var(--accent);border-radius:var(--radius-lg);padding:40px;text-align:center;max-width:500px;width:100%;box-shadow:0 0 40px var(--accent-glow)}.gate-card[data-astro-cid-mic6svp2] h2[data-astro-cid-mic6svp2]{color:var(--text-bright);font-size:var(--fs-2xl);margin:0 0 12px}.gate-card[data-astro-cid-mic6svp2] p[data-astro-cid-mic6svp2]{color:var(--text-muted);margin:0 0 24px}.gate-form-row[data-astro-cid-mic6svp2]{display:flex;gap:10px}.gate-email[data-astro-cid-mic6svp2]{flex:1;padding:14px 18px;border:1px solid var(--border);border-radius:var(--radius-md);font-size:var(--fs-base);background:var(--surface);color:var(--text-bright);outline:none}.gate-email[data-astro-cid-mic6svp2]:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}.gate-email[data-astro-cid-mic6svp2]::placeholder{color:var(--text-muted)}.gate-submit[data-astro-cid-mic6svp2]{background:var(--accent);color:#fff;border:none;padding:14px 24px;border-radius:var(--radius-md);font-size:var(--fs-base);font-weight:var(--fw-semibold);cursor:pointer;transition:background var(--transition-fast),transform .1s;white-space:nowrap}.gate-submit[data-astro-cid-mic6svp2]:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 0 24px var(--accent-glow-strong)}.gate-submit[data-astro-cid-mic6svp2]:disabled{opacity:.6;cursor:not-allowed;transform:none}.gate-consent[data-astro-cid-mic6svp2]{display:flex;align-items:flex-start;gap:8px;margin-top:14px;font-size:var(--fs-xs);color:var(--text-muted);cursor:pointer;text-align:left}.gate-consent[data-astro-cid-mic6svp2] input[data-astro-cid-mic6svp2]{margin-top:2px;accent-color:var(--accent)}.gate-consent[data-astro-cid-mic6svp2] a[data-astro-cid-mic6svp2]{color:var(--accent)}.gate-error[data-astro-cid-mic6svp2]{color:var(--func-red);font-size:var(--fs-sm);margin-top:8px;min-height:0}.gate-error[data-astro-cid-mic6svp2]:empty{display:none}@media(max-width:520px){.gate-card[data-astro-cid-mic6svp2]{padding:30px 20px}.gate-form-row[data-astro-cid-mic6svp2]{flex-direction:column}}.course-layout[data-astro-cid-encbymzg]{display:flex;min-height:calc(100vh - 64px)}.lesson-content[data-astro-cid-encbymzg]{flex:1;max-width:800px;margin:0 auto;padding:32px 40px 80px}.lesson-breadcrumb[data-astro-cid-encbymzg]{display:flex;align-items:center;gap:8px;font-size:var(--fs-sm);color:var(--text-muted);margin-bottom:24px}.lesson-breadcrumb[data-astro-cid-encbymzg] a[data-astro-cid-encbymzg]{color:var(--accent);text-decoration:none}.lesson-breadcrumb[data-astro-cid-encbymzg] a[data-astro-cid-encbymzg]:hover{text-decoration:underline}.lesson-title[data-astro-cid-encbymzg]{font-size:var(--fs-4xl);color:var(--text-bright);margin:0 0 32px;line-height:1.2}.video-wrapper[data-astro-cid-encbymzg]{position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:var(--radius-lg);margin-bottom:32px;background:var(--surface)}.video-wrapper[data-astro-cid-encbymzg] iframe[data-astro-cid-encbymzg]{position:absolute;top:0;left:0;width:100%;height:100%;border:none}.lesson-body[data-astro-cid-encbymzg]{color:var(--text);font-size:var(--fs-lg);line-height:1.8}.lesson-body[data-astro-cid-encbymzg] h2{color:var(--text-bright);font-size:var(--fs-2xl);margin:40px 0 16px}.lesson-body[data-astro-cid-encbymzg] h3{color:var(--text-bright);font-size:var(--fs-xl);margin:32px 0 12px}.lesson-body[data-astro-cid-encbymzg] p{margin:0 0 20px}.lesson-body[data-astro-cid-encbymzg] a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}.lesson-body[data-astro-cid-encbymzg] a:hover{color:var(--accent-hover)}.lesson-body[data-astro-cid-encbymzg] ul,.lesson-body[data-astro-cid-encbymzg] ol{margin:0 0 20px;padding-left:24px}.lesson-body[data-astro-cid-encbymzg] li{margin-bottom:8px}.lesson-body[data-astro-cid-encbymzg] strong{color:var(--text-bright)}.related-substances[data-astro-cid-encbymzg]{margin-top:48px;padding-top:32px;border-top:1px solid var(--border)}.related-substances[data-astro-cid-encbymzg] h2[data-astro-cid-encbymzg]{font-size:var(--fs-2xl);color:var(--text-bright);margin:0 0 20px}.substance-grid[data-astro-cid-encbymzg]{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}.lesson-complete[data-astro-cid-encbymzg]{margin-top:40px;text-align:center}.mark-complete-btn[data-astro-cid-encbymzg]{background:var(--func-green);color:#fff;border:none;padding:12px 32px;border-radius:var(--radius-md);font-size:var(--fs-base);font-weight:var(--fw-semibold);cursor:pointer;transition:opacity var(--transition-fast);font-family:var(--font-heading)}.mark-complete-btn[data-astro-cid-encbymzg]:hover{opacity:.9}.mark-complete-btn[data-astro-cid-encbymzg].completed{background:var(--surface);color:var(--func-green);border:2px solid var(--func-green);cursor:default}.lesson-nav[data-astro-cid-encbymzg]{display:flex;justify-content:space-between;margin-top:40px;padding-top:32px;border-top:1px solid var(--border);gap:20px}.nav-prev[data-astro-cid-encbymzg],.nav-next[data-astro-cid-encbymzg]{color:var(--accent);text-decoration:none;font-weight:var(--fw-medium);font-size:var(--fs-sm);max-width:45%}.nav-prev[data-astro-cid-encbymzg]:hover,.nav-next[data-astro-cid-encbymzg]:hover{text-decoration:underline}.nav-next[data-astro-cid-encbymzg]{margin-left:auto;text-align:right}@media(max-width:900px){.lesson-content[data-astro-cid-encbymzg]{padding:24px 20px 60px}.lesson-title[data-astro-cid-encbymzg]{font-size:var(--fs-3xl)}}