.neutrophils-course-redesign{--course-header-padding:2.5rem;--course-sidebar-width:280px;--course-content-max-width:840px}.course-header{border-bottom:1px solid var(--border);padding:var(--course-header-padding) 0;margin-bottom:2rem}.course-header-inner{max-width:var(--course-content-max-width)}.course-header-breadcrumb{display:flex;align-items:center;gap:.5rem;margin-bottom:1rem;font-size:.875rem;color:var(--ink-muted)}.course-header-discipline{font-weight:500;color:var(--academy)}.course-header-separator{color:var(--border-strong)}.course-header-topic{font-weight:600;color:var(--ink)}.course-header-title{font-size:2.5rem;font-weight:700;line-height:1.2;color:var(--ink);margin:0 0 1rem;letter-spacing:-.02em}.course-header-description{font-size:1.125rem;line-height:1.6;color:var(--ink-muted);margin:0 0 1.5rem;max-width:42rem}.course-header-meta{display:flex;flex-wrap:wrap;gap:.75rem;margin-bottom:1.5rem}.course-meta-tag{display:inline-flex;align-items:center;padding:.375rem .875rem;border-radius:var(--radius-full);font-size:.8125rem;font-weight:500;background:var(--surface-inset);color:var(--ink-muted);border:1px solid var(--border)}.course-meta-tag--emphasis{background:var(--academy-soft);color:var(--academy);border-color:var(--academy-border)}.course-header-cta{display:inline-flex;align-items:center;gap:.5rem;padding:.875rem 1.75rem;font-size:.9375rem;font-weight:600}.course-main{display:grid;grid-template-columns:var(--course-sidebar-width) 1fr;gap:2rem;align-items:start;max-width:1120px;margin:0 auto}@media (max-width:1024px){.course-main{grid-template-columns:1fr}.course-sidebar{display:none}}.course-sidebar{position:sticky;top:calc(var(--header-height) + 2rem);max-height:calc(100svh - var(--header-height) - 4rem);overflow-y:auto;scrollbar-width:thin;scrollbar-color:color-mix(in srgb,var(--ink-muted) 30%,transparent) transparent}.course-sidebar::-webkit-scrollbar{width:4px}.course-sidebar::-webkit-scrollbar-track{background:transparent}.course-sidebar::-webkit-scrollbar-thumb{border-radius:var(--radius-full);background:color-mix(in srgb,var(--ink-muted) 20%,transparent)}.course-sidebar-nav{background:var(--paper-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.25rem}.course-sidebar-title{font-size:.6875rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-muted);margin:0 0 1rem}.course-sidebar-modules{display:flex;flex-direction:column;gap:.5rem}.course-module{border-radius:var(--radius-md);overflow:hidden;transition:background-color var(--transition-fast)}.course-module--current{background:var(--academy-soft)}.course-module--complete .course-module-check{color:var(--success)}.course-module-header{display:flex;align-items:center;gap:.75rem;width:100%;padding:.875rem 1rem;background:transparent;border:none;text-align:left;cursor:pointer;border-radius:var(--radius-md);transition:background-color var(--transition-fast)}.course-module-header:hover{background:var(--surface-inset)}.course-module--current .course-module-header{background:var(--academy-soft)}.course-module-number{display:inline-flex;align-items:center;justify-content:center;width:2rem;height:2rem;flex-shrink:0;border-radius:var(--radius-md);background:var(--surface-muted);color:var(--ink-muted);font-size:.75rem;font-weight:700;font-family:var(--font-sans)}.course-module--current .course-module-number{background:var(--academy);color:white}.course-module-info{flex:1;min-width:0}.course-module-title{display:block;font-size:.875rem;font-weight:600;color:var(--ink);line-height:1.4}.course-module-desc{display:block;font-size:.75rem;color:var(--ink-muted);line-height:1.4;margin-top:.125rem}.course-module-check{flex-shrink:0;color:var(--success)}.course-module-sections{margin-top:.5rem;padding-left:2.75rem;display:flex;flex-direction:column;gap:.25rem}.course-module-section{display:flex;align-items:center;gap:.5rem;width:100%;padding:.5rem .75rem;background:transparent;border:none;text-align:left;cursor:pointer;border-radius:var(--radius-sm);font-size:.8125rem;color:var(--ink-muted);transition:background-color var(--transition-fast),color var(--transition-fast)}.course-module-section:hover{background:var(--surface-inset);color:var(--ink)}.course-module-section--current{background:var(--academy);color:white;font-weight:500}.course-section-check{flex-shrink:0;font-size:.75rem;color:var(--success)}.course-module-section--current .course-section-check{color:white}.course-section-title{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.course-content{min-width:0}.course-lesson-panel{border-radius:var(--radius-xl);border:1px solid var(--border);overflow:hidden}.course-lesson-header{padding:2rem;border-bottom:1px solid var(--border);background:linear-gradient(180deg,var(--surface-inset) 0,var(--paper-elevated) 100%)}.course-lesson-title{font-size:1.75rem;font-weight:700;line-height:1.25;color:var(--ink);margin:0 0 .75rem;letter-spacing:-.01em}.course-lesson-intent{font-size:1rem;line-height:1.6;color:var(--ink-muted);margin:0}.course-lesson-body{padding:2rem;max-width:none}.course-lesson-body .lesson-lead p{font-size:1.0625rem;line-height:1.7;color:var(--ink-muted);margin-bottom:1.25rem}.course-lesson-body .lesson-lead p:last-child{margin-bottom:0}.module-completion-summary{margin:2rem 0;padding:1.5rem;background:var(--success-soft);border:1px solid var(--success-border);border-radius:var(--radius-lg)}.module-completion-content{display:flex;align-items:flex-start;gap:1rem}.module-completion-icon{flex-shrink:0;color:var(--success)}.module-completion-title{font-size:1rem;font-weight:600;color:var(--ink);margin:0 0 .375rem}.module-completion-text{font-size:.9375rem;line-height:1.5;color:var(--ink-muted);margin:0}.lesson-completion-panel{margin:2rem 0;padding:2rem;background:var(--success-soft);border:1px solid var(--success-border);border-radius:var(--radius-lg)}.lesson-completion-content{display:flex;align-items:flex-start;gap:1rem;margin-bottom:1.5rem}.lesson-completion-icon{flex-shrink:0;color:var(--success)}.lesson-completion-title{font-size:1.25rem;font-weight:700;color:var(--ink);margin:0 0 .5rem}.lesson-completion-text{font-size:1rem;line-height:1.5;color:var(--ink-muted);margin:0}.lesson-completion-actions{display:flex;gap:.75rem;flex-wrap:wrap}.course-lesson-footer{padding:1.5rem 2rem;border-top:1px solid var(--border);background:linear-gradient(180deg,var(--surface-inset) 0,var(--paper-elevated) 100%)}.course-lesson-nav{display:grid;grid-template-columns:1fr auto 1fr;gap:1rem;align-items:center}@media (max-width:640px){.course-lesson-nav{grid-template-columns:1fr;gap:.75rem}}.course-lesson-next,.course-lesson-prev{display:flex;align-items:center;gap:.75rem;min-height:3rem;padding:.875rem 1.25rem;border-radius:var(--radius-lg);font-size:.9375rem;font-weight:500;text-align:left;transition:transform var(--transition-fast)}.course-lesson-prev{background:var(--paper-elevated);border:1px solid var(--border);color:var(--ink)}.course-lesson-prev:hover:not(:disabled){border-color:var(--academy-border);background:var(--academy-soft);transform:translateX(-2px)}.course-lesson-prev:disabled{opacity:.4;cursor:not-allowed}.course-lesson-next{justify-content:flex-end;text-align:right;background:var(--academy);border:1px solid var(--academy);color:white}.course-lesson-next:hover{background:var(--academy-strong,#154a8a);transform:translateX(2px)}.course-lesson-nav-text{display:flex;flex-direction:column;min-width:0}.course-lesson-nav-label{font-size:.6875rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-muted);margin-bottom:.125rem}.course-lesson-next .course-lesson-nav-label{color:color-mix(in srgb,white 75%,var(--academy-soft))}.course-lesson-nav-title{font-size:.9375rem;font-weight:600;line-height:1.35;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.course-lesson-next .course-lesson-nav-title{color:white}@media (max-width:768px){.course-header{padding:1.75rem 0}.course-header-title{font-size:2rem}.course-header-description{font-size:1rem}.course-lesson-body,.course-lesson-footer,.course-lesson-header{padding:1.5rem}.course-lesson-title{font-size:1.5rem}}@media (max-width:480px){.course-header-title{font-size:1.75rem}.course-header-meta{flex-direction:column;align-items:flex-start}.course-lesson-body,.course-lesson-footer,.course-lesson-header{padding:1.25rem}}@media (prefers-reduced-motion:reduce){.course-lesson-next,.course-lesson-prev,.course-module-header,.course-module-section{transition:none}.course-lesson-next:hover,.course-lesson-prev:hover:not(:disabled){transform:none}}