:root{--font-family: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--color-brand-primary: #4f46e5;--color-brand-primary-hover: #4338ca;--color-brand-primary-light: #eef2ff;--color-brand-accent: #f59e0b;--color-brand-accent-hover: #d97706;--badge-leitura-bg: #eff6ff;--badge-leitura-text: #1d4ed8;--badge-leitura-border: #bfdbfe;--badge-video-bg: #f5f3ff;--badge-video-text: #6d28d9;--badge-video-border: #ddd6fe;--badge-audio-bg: #fdf2f8;--badge-audio-text: #be185d;--badge-audio-border: #fbcfe8;--badge-quiz-bg: #fffbeb;--badge-quiz-text: #b45309;--badge-quiz-border: #fde68a;--badge-flashcards-bg: #ecfdf5;--badge-flashcards-text: #047857;--badge-flashcards-border: #a7f3d0;--bg-app: #f8fafc;--bg-surface: #ffffff;--bg-surface-subtle: #f1f5f9;--bg-surface-elevated: #ffffff;--text-main: #0f172a;--text-muted: #475569;--text-light: #64748b;--text-on-primary: #ffffff;--border-subtle: #e2e8f0;--border-focus: #4f46e5;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, .05);--shadow-md: 0 4px 6px -1px rgba(15, 23, 42, .07), 0 2px 4px -2px rgba(15, 23, 42, .05);--shadow-lg: 0 10px 25px -3px rgba(15, 23, 42, .08), 0 4px 6px -4px rgba(15, 23, 42, .03);--shadow-hover: 0 14px 28px -4px rgba(79, 70, 229, .12), 0 8px 10px -6px rgba(15, 23, 42, .04);--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .22s cubic-bezier(.4, 0, .2, 1);--student-header-height: 56px;--student-tabs-height: 46px;--student-item-tabs-height: 40px;--student-content-toolbar-height: 34px;--student-bottom-nav-height: 60px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}body{font-family:var(--font-family);background-color:var(--bg-app);color:var(--text-main);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid rgba(79,70,229,.45);outline-offset:2px}.student-app{display:flex;flex-direction:column;min-height:100vh}.student-header{background:var(--bg-surface);border-bottom:1px solid var(--border-subtle);position:sticky;top:0;z-index:40;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background-color:#fffffff0}.student-header-inner{max-width:1024px;margin:0 auto;padding:.85rem 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}.student-brand{display:flex;align-items:center;gap:.75rem;text-decoration:none;color:inherit;cursor:pointer;background:none;border:none;font:inherit;text-align:left}.student-logo-mark{width:40px;height:40px;background:linear-gradient(135deg,#4f46e5,#7c3aed);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:1.2rem;box-shadow:0 4px 10px #4f46e547}.student-brand-text{display:flex;flex-direction:column}.student-brand-title{font-weight:800;font-size:1.25rem;letter-spacing:-.02em;color:var(--text-main);line-height:1.2}.student-brand-badge{font-size:.75rem;font-weight:600;color:var(--color-brand-primary);letter-spacing:.04em;text-transform:uppercase}.student-header-nav{display:flex;align-items:center;gap:.5rem}.btn-header-home{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem .9rem;background:var(--bg-surface-subtle);border:1px solid var(--border-subtle);border-radius:var(--radius-full);color:var(--text-muted);font-size:.875rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);min-height:40px}.btn-header-home:hover{background:var(--color-brand-primary-light);color:var(--color-brand-primary);border-color:#c7d2fe}.student-main{flex:1;max-width:1024px;width:100%;margin:0 auto;padding:1.5rem 1.25rem 3rem}.student-hero{background:linear-gradient(135deg,#4f46e5,#6366f1 55%,#8b5cf6);color:#fff;padding:2.25rem 1.75rem;border-radius:var(--radius-xl);margin-bottom:2rem;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}.student-hero:after{content:"";position:absolute;top:-40px;right:-40px;width:180px;height:180px;border-radius:50%;background:#ffffff14;pointer-events:none}.student-hero h1{font-size:1.85rem;font-weight:800;line-height:1.2;margin-bottom:.5rem;letter-spacing:-.02em}.student-hero p{font-size:1.05rem;color:#ffffffe6;max-width:600px}.student-section-title{font-size:1.4rem;font-weight:700;color:var(--text-main);margin-bottom:1rem;letter-spacing:-.01em;display:flex;align-items:center;gap:.5rem}.student-section-subtitle{font-size:.95rem;color:var(--text-light);margin-top:-.5rem;margin-bottom:1.25rem}.student-cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.25rem}.disciplina-card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:1.5rem;text-align:left;cursor:pointer;transition:all var(--transition-normal);display:flex;flex-direction:column;justify-content:space-between;box-shadow:var(--shadow-sm);position:relative;min-height:170px;text-decoration:none;color:inherit}.disciplina-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#c7d2fe}.disciplina-card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem;margin-bottom:.75rem}.disciplina-icon-wrap{width:48px;height:48px;border-radius:var(--radius-md);background:var(--color-brand-primary-light);color:var(--color-brand-primary);display:flex;align-items:center;justify-content:center;font-size:1.5rem;flex-shrink:0}.disciplina-card-title{font-size:1.2rem;font-weight:700;color:var(--text-main);line-height:1.3}.disciplina-card-desc{font-size:.9rem;color:var(--text-muted);line-height:1.5;margin-bottom:1.25rem;flex:1}.disciplina-card-footer{display:flex;align-items:center;justify-content:space-between;padding-top:.75rem;border-top:1px solid var(--bg-surface-subtle);font-size:.875rem;font-weight:600;color:var(--color-brand-primary)}.disciplina-card-action{display:inline-flex;align-items:center;gap:.35rem}.student-breadcrumbs{display:flex;align-items:center;flex-wrap:wrap;gap:.5rem;font-size:.875rem;color:var(--text-light);margin-bottom:1.25rem}.breadcrumb-link{background:none;border:none;padding:0;font:inherit;color:var(--color-brand-primary);font-weight:600;cursor:pointer;text-decoration:none}.breadcrumb-link:hover{text-decoration:underline}.breadcrumb-sep{color:#cbd5e1}.serie-selector-wrap{margin-bottom:1.5rem}.serie-selector-label{font-size:.825rem;font-weight:700;color:var(--text-light);text-transform:uppercase;letter-spacing:.04em;margin-bottom:.5rem}.serie-pills-list{display:flex;flex-wrap:wrap;gap:.5rem}.serie-pill-btn{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-full);padding:.5rem 1.1rem;font-size:.9rem;font-weight:600;color:var(--text-muted);cursor:pointer;transition:all var(--transition-fast);min-height:44px}.serie-pill-btn:hover{background:var(--bg-surface-subtle);color:var(--text-main);border-color:#cbd5e1}.serie-pill-btn.active{background:var(--color-brand-primary);color:#fff;border-color:var(--color-brand-primary);box-shadow:0 4px 10px #4f46e540}.modulo-card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:1.5rem;display:flex;flex-direction:column;justify-content:space-between;box-shadow:var(--shadow-sm);transition:all var(--transition-normal);min-height:200px}.modulo-card:hover{border-color:#c7d2fe;box-shadow:var(--shadow-md)}.modulo-card-header{margin-bottom:.75rem}.modulo-order-badge{display:inline-block;font-size:.75rem;font-weight:700;color:var(--color-brand-primary);background:var(--color-brand-primary-light);padding:.2rem .6rem;border-radius:var(--radius-full);margin-bottom:.5rem}.modulo-in-progress-badge{display:inline-block;font-size:.75rem;font-weight:700;color:#b45309;background:#fef3c7;border:1px solid #fde68a;padding:.2rem .6rem;border-radius:var(--radius-full);margin-left:.5rem;vertical-align:middle}.modulo-card-title{font-size:1.25rem;font-weight:700;color:var(--text-main);line-height:1.3;margin-bottom:.5rem}.modulo-card-desc{font-size:.925rem;color:var(--text-muted);line-height:1.5;margin-bottom:1.25rem;flex:1}.modulo-card-meta{display:flex;align-items:center;gap:.75rem;font-size:.85rem;color:var(--text-light);margin-bottom:1rem}.btn-start-study{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;width:100%;background:var(--color-brand-primary);color:#fff;border:none;border-radius:var(--radius-md);padding:.85rem 1.25rem;font-size:1rem;font-weight:700;cursor:pointer;transition:all var(--transition-fast);min-height:48px;box-shadow:0 4px 10px #4f46e538}.btn-start-study:hover{background:var(--color-brand-primary-hover);box-shadow:0 6px 14px #4f46e552}.continue-study-section{margin-bottom:2rem}.continue-study-card{background:linear-gradient(135deg,#fff,#f0fdf4);border:1.5px solid #86efac;border-radius:var(--radius-lg);padding:1.5rem;box-shadow:0 4px 15px #16653414;display:flex;flex-direction:column;gap:.75rem;transition:all var(--transition-normal)}@media(min-width:640px){.continue-study-card{padding:1.75rem}}.continue-study-header{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap}.continue-study-tag{display:inline-flex;align-items:center;font-size:.75rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:#166534;background:#dcfce7;border:1px solid #bbf7d0;padding:.25rem .65rem;border-radius:var(--radius-full)}.continue-study-discipline{font-size:.85rem;font-weight:700;color:#15803d}.continue-study-title{font-size:1.35rem;font-weight:800;color:var(--text-main);line-height:1.3;margin:0}.continue-study-location{font-size:.95rem;color:var(--text-muted);margin:0;display:flex;flex-wrap:wrap;align-items:center;gap:.4rem}.continue-study-location-label{font-weight:600;color:var(--text-light)}.continue-study-location-value{font-weight:700;color:#1e293b}.continue-study-actions{margin-top:.5rem}.btn-continue-study{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;background:#16a34a;color:#fff;border:none;border-radius:var(--radius-md);padding:.85rem 1.5rem;font-size:1rem;font-weight:700;cursor:pointer;transition:all var(--transition-fast);min-height:48px;box-shadow:0 4px 12px #16a34a40}.btn-continue-study:hover{background:#15803d;box-shadow:0 6px 16px #16a34a59;transform:translateY(-1px)}.module-page-container{padding-bottom:2.5rem}.module-page-layout,.module-content-col{display:flex;flex-direction:column}.module-page-header{margin-bottom:1.25rem}.module-context-badge{display:inline-block;font-size:.825rem;font-weight:700;color:var(--color-brand-primary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.35rem}.module-title-wrap{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem}.module-page-title{font-size:1.65rem;font-weight:800;color:var(--text-main);line-height:1.25;margin:0}.module-cover-col{margin-bottom:1.5rem}.module-cover-wrap{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--border-subtle);background:var(--bg-surface-subtle)}.module-cover-img{width:100%;height:auto;display:block;object-fit:cover;aspect-ratio:16 / 9;max-height:280px}.module-cover-placeholder{aspect-ratio:16 / 9;max-height:220px;background:linear-gradient(135deg,#4f46e5,#6366f1,#818cf8);display:flex;align-items:center;justify-content:center;text-align:center;padding:1.5rem}.module-cover-placeholder-content{display:flex;flex-direction:column;align-items:center;gap:.5rem;color:#fff}.module-cover-placeholder-icon{font-size:2.75rem;line-height:1}.module-cover-placeholder-title{font-size:1.05rem;font-weight:700;letter-spacing:.02em;opacity:.95;text-shadow:0 1px 3px rgba(0,0,0,.2)}.module-section-box{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:1.25rem 1.35rem;margin-bottom:1.25rem;box-shadow:var(--shadow-sm)}.module-section-heading{font-size:1.05rem;font-weight:700;color:var(--text-main);margin-top:0;margin-bottom:.75rem;display:flex;align-items:center;gap:.5rem}.module-summary-text{font-size:.95rem;color:var(--text-muted);line-height:1.6;margin:0}.module-topics-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.65rem}.module-topic-item{display:flex;align-items:flex-start;gap:.65rem;font-size:.95rem;color:var(--text-main);line-height:1.5}.module-topic-check{color:#16a34a;font-weight:800;font-size:1rem;flex-shrink:0;margin-top:.05rem}.module-topic-text{flex:1}.module-cta-wrap{margin-top:1rem;margin-bottom:2rem}.btn-module-study-cta{display:inline-flex;align-items:center;justify-content:center;gap:.65rem;width:100%;background:var(--color-brand-primary);color:#fff;border:none;border-radius:var(--radius-md);padding:1rem 1.5rem;font-size:1.05rem;font-weight:700;cursor:pointer;transition:all var(--transition-fast);min-height:52px;box-shadow:0 4px 12px #4f46e547}.btn-module-study-cta:hover{background:var(--color-brand-primary-hover);box-shadow:0 6px 16px #4f46e561;transform:translateY(-1px)}.mobile-only-cover{display:block}.desktop-only-cover{display:none}@media(min-width:768px){.module-page-layout{display:grid;grid-template-columns:1fr 340px;gap:2rem;align-items:start}.mobile-only-cover{display:none}.desktop-only-cover{display:block;position:sticky;top:80px}.module-page-title{font-size:1.85rem}.btn-module-study-cta{max-width:320px}}.study-session-container{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);box-shadow:var(--shadow-md);overflow:hidden;display:flex;flex-direction:column}.study-top-bar{background:#fff;border-bottom:1px solid var(--border-subtle);padding:.65rem 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:.75rem}.study-module-info{display:flex;flex-direction:column;gap:.1rem}.study-module-subtitle{font-size:.725rem;font-weight:700;color:var(--text-light);text-transform:uppercase;letter-spacing:.05em}.study-module-title{font-size:1.1rem;font-weight:800;color:var(--text-main);line-height:1.2}.study-progress-track{height:3px;background:var(--bg-surface-subtle);width:100%}.study-progress-fill{height:100%;background:linear-gradient(90deg,#4f46e5,#06b6d4);transition:width var(--transition-normal)}.study-session-body{display:flex;min-height:480px;align-items:stretch}.study-roadmap-sidebar{width:260px;flex-shrink:0;background:#fafbfc;border-right:1px solid var(--border-subtle);padding:1.25rem 1rem;display:flex;flex-direction:column}.roadmap-sidebar-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:.85rem;padding-bottom:.5rem;border-bottom:1px solid var(--border-subtle)}.roadmap-sidebar-title{font-size:.775rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:var(--text-light)}.roadmap-sidebar-count{font-size:.75rem;font-weight:700;color:var(--color-brand-primary);background:var(--color-brand-primary-light);padding:.15rem .55rem;border-radius:var(--radius-full)}.roteiro-estudo-list{display:flex;flex-direction:column;gap:.4rem;width:100%}.roteiro-item{display:flex;align-items:center;gap:.75rem;width:100%;padding:.65rem .85rem;border-radius:var(--radius-md);border:1px solid transparent;background:transparent;cursor:pointer;text-align:left;transition:all var(--transition-fast);min-height:48px;font-family:inherit}.roteiro-item:hover{background:var(--bg-surface-subtle);border-color:var(--border-subtle)}.roteiro-item-current{background:var(--color-brand-primary-light);border-color:#c7d2fe;box-shadow:0 1px 3px #4f46e514}.roteiro-item-current .roteiro-item-type{color:var(--color-brand-primary);font-weight:700}.roteiro-item-visited{background:#fff;border-color:#f1f5f9}.roteiro-item-visited .roteiro-item-type{color:#1e293b;font-weight:600}.roteiro-item-future{background:transparent}.roteiro-item-future .roteiro-item-type{color:var(--text-muted);font-weight:500}.roteiro-item-status{width:24px;height:24px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.roteiro-badge-current{color:var(--color-brand-primary);font-size:.75rem;display:inline-flex;align-items:center;justify-content:center}.roteiro-badge-visited{color:#059669;font-weight:800;font-size:.85rem;display:inline-flex;align-items:center;justify-content:center}.roteiro-badge-future{color:#94a3b8;font-size:.75rem;font-weight:700;width:20px;height:20px;border:1px solid #cbd5e1;border-radius:50%;display:inline-flex;align-items:center;justify-content:center}.roteiro-item-content{display:flex;flex-direction:column;gap:.15rem;min-width:0;flex:1}.roteiro-item-main{display:flex;align-items:center;gap:.5rem}.roteiro-item-icon{font-size:.95rem;line-height:1;flex-shrink:0}.roteiro-item-type{font-size:.9rem;line-height:1.2}.roteiro-item-subtitle{font-size:.775rem;color:var(--text-light);line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.module-activity-tabs,.student-bottom-nav,.mobile-item-tabs{display:none}.desktop-item-tabs{display:block;margin-bottom:1.25rem;padding:.4rem .65rem;background:var(--bg-surface-subtle);border:1px solid var(--border-subtle);border-radius:var(--radius-md)}.desktop-item-tabs .activity-item-tabs-track{display:flex;align-items:center;gap:.4rem;overflow-x:auto;white-space:nowrap}.desktop-item-tabs .activity-item-tab-btn{display:inline-flex;align-items:center;gap:.4rem;padding:.4rem .85rem;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);background:#fff;color:var(--text-muted);font-size:.825rem;font-weight:600;cursor:pointer;white-space:nowrap;transition:all var(--transition-fast);font-family:inherit}.desktop-item-tabs .activity-item-tab-btn:hover{color:var(--text-main);border-color:#cbd5e1}.desktop-item-tabs .activity-item-tab-btn.tab-active{color:var(--color-brand-primary);background:var(--color-brand-primary-light);border-color:#c7d2fe;font-weight:700}.desktop-item-tabs .item-tab-index-badge{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;border-radius:50%;background:#e2e8f0;color:#475569;font-size:.7rem;font-weight:700;line-height:1}.desktop-item-tabs .activity-item-tab-btn.tab-active .item-tab-index-badge{background:var(--color-brand-primary);color:#fff}.study-activity-stage{flex:1;min-width:0;padding:2rem 1.75rem;min-height:380px}.study-activity-header{margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:1px solid var(--border-subtle);display:flex;flex-direction:column;gap:.5rem}.study-activity-title{font-size:1.5rem;font-weight:800;color:var(--text-main);line-height:1.3}.study-activity-desc{font-size:.95rem;color:var(--text-muted)}.study-nav-bar{background:var(--bg-surface);border-top:1px solid var(--border-subtle);padding:1rem 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}.btn-nav-study{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.4rem;border-radius:var(--radius-md);font-size:.95rem;font-weight:700;cursor:pointer;transition:all var(--transition-fast);min-height:48px}.btn-nav-prev{background:var(--bg-surface);color:var(--text-muted);border:1px solid var(--border-subtle)}.btn-nav-prev:hover:not(:disabled){background:var(--bg-surface-subtle);color:var(--text-main);border-color:#cbd5e1}.btn-nav-prev:disabled{opacity:.45;cursor:not-allowed}.btn-nav-next{background:var(--color-brand-primary);color:#fff;border:none;box-shadow:0 4px 10px #4f46e538}.btn-nav-next:hover:not(:disabled){background:var(--color-brand-primary-hover);box-shadow:0 6px 14px #4f46e552}.btn-nav-next:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}.reading-renderer-container{max-width:760px;margin:0 auto}.reading-title-row{display:flex;align-items:center;justify-content:space-between;gap:.75rem;margin-bottom:1.25rem;padding-bottom:.75rem;border-bottom:1px solid var(--border-subtle)}.reading-title-wrap{min-width:0;flex:1}.reading-title{font-size:1.35rem;font-weight:800;color:var(--text-main);line-height:1.25;margin:0}.reading-objective{font-size:.85rem;color:var(--text-muted);font-style:italic;margin-top:.25rem}.reading-font-controls{display:inline-flex;align-items:center;gap:.35rem;flex-shrink:0}.btn-font-size{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius-sm);border:1px solid var(--border-subtle);background:#fff;color:var(--text-main);font-size:.85rem;font-weight:700;cursor:pointer;transition:all var(--transition-fast);touch-action:manipulation}.btn-font-size:hover:not(:disabled){background:var(--color-brand-primary-light);color:var(--color-brand-primary);border-color:#c7d2fe}.btn-font-size:focus-visible{outline:2px solid var(--color-brand-primary);outline-offset:2px}.btn-font-size:disabled{opacity:.35;cursor:not-allowed;background:#f1f5f9;border-color:transparent}.reading-content-body{line-height:1.8;color:#1e293b;transition:font-size .15s ease}.reading-content-body p{margin-bottom:1.25rem}.reading-content-body h1{font-size:1.65em;margin-top:1.75rem;margin-bottom:.75rem;color:var(--text-main);font-weight:800;line-height:1.3}.reading-content-body h2{font-size:1.4em;margin-top:1.5rem;margin-bottom:.65rem;color:var(--text-main);font-weight:800;line-height:1.35}.reading-content-body h3{font-size:1.2em;margin-top:1.25rem;margin-bottom:.5rem;color:var(--text-main);font-weight:700;line-height:1.4}.reading-content-body ul,.reading-content-body ol{margin-left:1.5rem;margin-bottom:1.25rem}.reading-content-body li{margin-bottom:.5rem}.reading-content-body img{max-width:100%;height:auto;border-radius:var(--radius-md);margin:1.5rem 0}.video-renderer-container{max-width:380px;width:100%;margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:1rem}.video-frame-box{background:#000;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);position:relative;aspect-ratio:9 / 16;width:100%;max-width:360px;max-height:78vh;display:flex;align-items:center;justify-content:center}.video-element{width:100%;height:100%;object-fit:contain}.video-meta-info{background:var(--bg-surface-subtle);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:.85rem 1rem;font-size:.875rem;color:var(--text-muted);display:flex;align-items:center;justify-content:space-between;gap:1rem;width:100%;max-width:360px}.audio-renderer-container{max-width:650px;margin:0 auto;background:linear-gradient(135deg,#fdf2f8,#fff);border:1px solid var(--badge-audio-border);border-radius:var(--radius-xl);padding:2rem;box-shadow:var(--shadow-md);text-align:center}.audio-icon-pulse{width:64px;height:64px;margin:0 auto 1.25rem;border-radius:50%;background:var(--badge-audio-bg);border:2px solid var(--badge-audio-border);color:var(--badge-audio-text);display:flex;align-items:center;justify-content:center;font-size:2rem}.audio-player-element{width:100%;margin-top:1.25rem}.slides-renderer{max-width:1100px;margin:0 auto;padding:1rem;border:1px solid var(--border-subtle);border-radius:var(--radius-lg);background:var(--bg-surface);box-shadow:var(--shadow-md);outline:none}.slides-renderer:focus-visible{outline:3px solid var(--color-brand-primary);outline-offset:3px}.slides-renderer.is-mobile-immersive{position:fixed;z-index:1000;top:0;right:0;bottom:0;left:0;width:100vw;height:100vh;height:100dvh;max-width:none;margin:0;padding:0;overflow:hidden;border:0;border-radius:0;background:#0b1220;box-shadow:none;color:#f8fafc}.slides-renderer.is-mobile-immersive .slides-page-area{position:absolute;top:0;right:0;bottom:0;left:0;min-height:0;max-height:none;margin:0;align-items:center;border-radius:0;background:#0b1220}.slides-renderer.is-mobile-immersive .slides-header{position:absolute;z-index:2;top:max(.75rem,env(safe-area-inset-top));right:max(.75rem,env(safe-area-inset-right));left:auto;padding:0;pointer-events:none;opacity:0;visibility:hidden;transition:opacity .18s ease,visibility 0s linear .18s}.slides-renderer.is-mobile-immersive .slides-header>div,.slides-renderer.is-mobile-immersive .slides-fullscreen-button,.slides-renderer.is-mobile-immersive .slides-controls,.slides-renderer.is-mobile-immersive .slides-keyboard-help,.slides-renderer.is-mobile-immersive .slides-rendering-status{display:none}.slides-renderer.is-mobile-immersive.slides-controls-visible .slides-header{opacity:1;visibility:visible;transition-delay:0s}.slides-renderer.is-mobile-immersive .slides-exit-fullscreen{min-width:44px;min-height:44px;padding:.5rem .75rem;border:1px solid #475569;border-radius:var(--radius-md);color:#f8fafc;background:#1f2937eb;font:inherit;font-weight:700;pointer-events:auto}.slides-renderer.is-mobile-immersive .slides-error,.slides-renderer.is-mobile-immersive .slides-status{position:absolute;z-index:1}.slides-renderer.is-mobile-immersive.is-fullscreen,.slides-renderer.is-mobile-immersive:fullscreen{display:block;width:100vw;height:100dvh;padding:0;background:#0b1220}.slides-renderer.is-fullscreen,.slides-renderer:fullscreen{max-width:none;width:100%;height:100%;box-sizing:border-box;display:flex;flex-direction:column;padding:1rem clamp(1rem,3vw,3rem);border:0;border-radius:0;background:#111827;color:#f8fafc}.slides-header,.slides-controls{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}.slides-header h3{margin:.4rem 0 0;color:var(--text-main)}.slides-renderer.is-fullscreen .slides-header h3,.slides-renderer:fullscreen .slides-header h3{color:#f8fafc}.slides-header p{margin:.35rem 0 0;color:var(--text-muted)}.slides-badge{display:inline-flex;padding:.2rem .55rem;border-radius:999px;color:#4338ca;background:#eef2ff;font-size:.7rem;font-weight:800;letter-spacing:.06em}.slides-fullscreen-button,.slides-controls button{min-height:42px;padding:.55rem .9rem;border:1px solid #cbd5e1;border-radius:var(--radius-md);color:var(--text-main);background:var(--bg-surface);font:inherit;font-weight:700;cursor:pointer}.slides-fullscreen-button:hover,.slides-controls button:not(:disabled):hover{border-color:var(--color-brand-primary);color:var(--color-brand-primary)}.slides-controls button:disabled{opacity:.45;cursor:not-allowed}.slides-zoom-controls{display:flex;align-items:center;justify-content:center;gap:.5rem;flex-wrap:wrap}.slides-controls .slides-zoom-controls button{min-width:42px}.slides-zoom-level{min-width:3.5rem;color:var(--text-main);text-align:center;font-size:.85rem;font-weight:700}.slides-renderer.is-fullscreen .slides-fullscreen-button,.slides-renderer:fullscreen .slides-fullscreen-button,.slides-renderer.is-fullscreen .slides-controls button,.slides-renderer:fullscreen .slides-controls button{color:#f8fafc;border-color:#475569;background:#1f2937}.slides-renderer.is-fullscreen .slides-zoom-level,.slides-renderer:fullscreen .slides-zoom-level{color:#f8fafc}.slides-page-area{position:relative;min-height:280px;max-height:72vh;margin:1rem 0;overflow:auto;display:flex;align-items:flex-start;justify-content:center;background:#e2e8f0;border-radius:var(--radius-md);touch-action:none;overscroll-behavior:contain}.slides-renderer.is-fullscreen .slides-page-area,.slides-renderer:fullscreen .slides-page-area{flex:1;max-height:none;min-height:0;background:#0b1220}.slides-canvas{display:block;max-width:none;flex:0 0 auto;height:auto;transform-origin:center center;background:#fff;box-shadow:0 4px 20px #0f172a38}.slides-status,.slides-error{align-self:center;margin:auto;padding:1.5rem;color:var(--text-muted);text-align:center}.slides-error{color:#b91c1c}.slides-rendering-status{position:sticky;bottom:.5rem;align-self:flex-end;margin:.5rem;padding:.35rem .65rem;border-radius:999px;background:#0f172acc;color:#fff;font-size:.75rem}.slides-progress{flex:1;max-width:420px;color:var(--text-muted);text-align:center;font-size:.85rem;font-weight:700}.slides-progress-track{height:5px;margin-top:.4rem;overflow:hidden;border-radius:999px;background:#e2e8f0}.slides-progress-fill{height:100%;border-radius:inherit;background:var(--color-brand-primary);transition:width .15s ease}.slides-keyboard-help{margin:.5rem 0 0;color:var(--text-muted);text-align:center;font-size:.75rem}@media(pointer:coarse),(max-width:600px){.slides-renderer{padding:.75rem}.slides-header{align-items:flex-start}.slides-header>div{min-width:0;flex:1}.slides-header h3{overflow-wrap:anywhere}.slides-controls{justify-content:center;gap:.65rem}.slides-controls .slides-progress{order:-1;flex-basis:100%;max-width:none}.slides-controls .slides-zoom-controls{width:100%;gap:.35rem}.slides-controls .slides-zoom-controls button{min-height:44px;padding:.5rem .65rem}.slides-page-area{min-height:45vh;max-height:65vh}.slides-renderer.is-fullscreen .slides-page-area,.slides-renderer:fullscreen .slides-page-area{min-height:0;max-height:none}}.quiz-renderer-container{max-width:720px;margin:0 auto}.quiz-card-box{background:#fff;border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:1.75rem;box-shadow:var(--shadow-sm);margin-bottom:1.25rem}.quiz-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:.75rem}.quiz-question-number{font-size:.8rem;font-weight:700;color:var(--badge-quiz-text);text-transform:uppercase;letter-spacing:.04em}.quiz-status-pill{font-size:.75rem;font-weight:700;padding:.2rem .6rem;border-radius:var(--radius-full)}.quiz-status-pill.correct{background:#dcfce7;color:#166534;border:1px solid #bbf7d0}.quiz-status-pill.incorrect{background:#fee2e2;color:#991b1b;border:1px solid #fecaca}.quiz-question-text{font-size:1.05rem;font-weight:700;color:var(--text-main);margin-bottom:1.25rem;line-height:1.4}.quiz-options-list{display:flex;flex-direction:column;gap:.75rem}.quiz-option-item{background:var(--bg-surface-subtle);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:.85rem 1.15rem;font-size:.95rem;color:var(--text-main);cursor:pointer;transition:all var(--transition-fast);text-align:left;display:flex;align-items:center;gap:.85rem;min-height:48px}.quiz-option-item:hover:not(:disabled){background:var(--color-brand-primary-light);border-color:#c7d2fe}.quiz-option-item:disabled{cursor:default}.quiz-option-item.selected{font-weight:600}.quiz-option-item.correct{background:#ecfdf5;border:2px solid #10b981;color:#065f46;font-weight:600}.quiz-option-item.correct .quiz-option-letter{background:#10b981;color:#fff;border-color:#10b981}.quiz-option-item.incorrect{background:#fef2f2;border:2px solid #ef4444;color:#991b1b;font-weight:600}.quiz-option-item.incorrect .quiz-option-letter{background:#ef4444;color:#fff;border-color:#ef4444}.quiz-option-item.revealed-correct{background:#f0fdf4;border:2px dashed #10b981;color:#047857;font-weight:600}.quiz-option-item.revealed-correct .quiz-option-letter{background:#34d399;color:#fff;border-color:#34d399}.quiz-option-item.dimmed{opacity:.55;background:#f8fafc;border-color:#e2e8f0}.quiz-option-letter{width:30px;height:30px;border-radius:50%;background:#fff;border:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700;color:var(--text-muted);flex-shrink:0;transition:all var(--transition-fast)}.quiz-option-text-wrap{display:flex;flex:1;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.5rem}.quiz-option-text{line-height:1.4}.quiz-option-correct-badge{font-size:.75rem;font-weight:700;background:#dcfce7;color:#15803d;padding:.2rem .55rem;border-radius:var(--radius-full)}.quiz-feedback-box{margin-top:1.25rem;border-radius:var(--radius-md);padding:1.15rem 1.25rem;animation:feedbackFadeIn .25s ease-out}@keyframes feedbackFadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.quiz-feedback-box.correct{background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46}.quiz-feedback-box.incorrect{background:#fef2f2;border:1px solid #fecaca;color:#991b1b}.quiz-feedback-header{display:flex;align-items:center;gap:.5rem;font-size:1.05rem;font-weight:800;margin-bottom:.4rem}.quiz-feedback-icon{font-size:1.1rem}.quiz-feedback-body{font-size:.95rem;line-height:1.5;margin:0}.quiz-action-next-wrap{margin-top:1.5rem;display:flex;justify-content:flex-end}.btn-quiz-next{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;background:var(--color-brand-primary);color:#fff;border:none;border-radius:var(--radius-md);font-size:.95rem;font-weight:700;cursor:pointer;min-height:48px;transition:background var(--transition-fast)}.btn-quiz-next:hover{background:var(--color-brand-primary-hover)}.quiz-summary-box{text-align:center;padding:2.5rem 1.5rem}.quiz-summary-icon{font-size:3rem;margin-bottom:.75rem}.quiz-summary-title{font-size:1.5rem;font-weight:800;color:var(--text-main);margin-bottom:.5rem}.quiz-summary-score{font-size:1.25rem;font-weight:700;color:var(--color-brand-primary);margin-bottom:.75rem}.quiz-summary-badge{display:inline-block;padding:.35rem .85rem;background:var(--bg-surface-subtle);border:1px solid var(--border-subtle);border-radius:var(--radius-full);font-size:.9rem;color:var(--text-muted);margin-bottom:1rem}.quiz-summary-message{font-size:.95rem;color:var(--text-muted);max-width:440px;margin:0 auto 1.75rem;line-height:1.5}.btn-quiz-retry{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.75rem;background:var(--color-brand-primary);color:#fff;border:none;border-radius:var(--radius-md);font-size:.95rem;font-weight:700;cursor:pointer;min-height:48px;transition:background var(--transition-fast)}.btn-quiz-retry:hover{background:var(--color-brand-primary-hover)}.flashcards-renderer-container{max-width:600px;margin:0 auto;text-align:center}.flashcard-display-box{background:linear-gradient(135deg,#fff,#f0fdf4);border:2px solid var(--badge-flashcards-border);border-radius:var(--radius-xl);padding:2.5rem 2rem;min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:var(--shadow-md);cursor:pointer;transition:all var(--transition-normal);-webkit-user-select:none;user-select:none}.flashcard-display-box:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}.flashcard-side-label{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--badge-flashcards-text);margin-bottom:1rem}.flashcard-content-text{font-size:1.35rem;font-weight:700;color:var(--text-main);line-height:1.4;margin-bottom:1rem}.flashcard-hint-text{font-size:.85rem;color:var(--text-light);font-style:italic}.flashcard-controls{display:flex;align-items:center;justify-content:center;gap:1rem;margin-top:1.25rem}.student-state-container{text-align:center;padding:3.5rem 1.5rem;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);max-width:540px;margin:2rem auto}.student-state-icon{width:72px;height:72px;border-radius:50%;margin:0 auto 1.25rem;display:flex;align-items:center;justify-content:center;font-size:2rem}.student-state-icon.loading{background:var(--color-brand-primary-light);color:var(--color-brand-primary);animation:pulse-spin 1.4s ease-in-out infinite}.student-state-icon.empty{background:#f1f5f9;color:#64748b}.student-state-icon.error{background:#fef2f2;color:#ef4444}.student-state-title{font-size:1.35rem;font-weight:800;color:var(--text-main);margin-bottom:.5rem}.student-state-desc{font-size:.95rem;color:var(--text-muted);line-height:1.6;margin-bottom:1.5rem}.btn-state-action{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;background:var(--color-brand-primary);color:#fff;border:none;border-radius:var(--radius-md);font-size:.95rem;font-weight:700;cursor:pointer;min-height:48px;transition:background var(--transition-fast)}.btn-state-action:hover{background:var(--color-brand-primary-hover)}@keyframes pulse-spin{0%{transform:scale(.95) rotate(0)}50%{transform:scale(1.05) rotate(180deg)}to{transform:scale(.95) rotate(360deg)}}.mobile-content-toolbar{display:none}.desktop-content-toolbar{display:flex;justify-content:flex-end;margin-bottom:.65rem;padding-bottom:.35rem;border-bottom:1px solid var(--border-subtle)}.content-accessibility-toolbar{width:100%}.content-toolbar-inner{display:flex;align-items:center;justify-content:flex-end;height:100%}.content-toolbar-controls{display:inline-flex;align-items:center;gap:.35rem}.btn-font-scale{display:inline-flex;align-items:center;justify-content:center;min-width:30px;height:24px;padding:0 .35rem;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);background:#fff;color:var(--text-muted);font-size:.75rem;font-weight:700;cursor:pointer;transition:all var(--transition-fast);font-family:inherit;-webkit-user-select:none;user-select:none;touch-action:manipulation}.btn-font-scale:hover:not(:disabled){color:var(--color-brand-primary);border-color:#c7d2fe;background:var(--color-brand-primary-light)}.btn-font-scale:disabled{opacity:.35;cursor:not-allowed}.flashcards-renderer-container{max-width:600px;margin:0 auto;display:flex;flex-direction:column;gap:1.25rem}.flashcard-display-box{background:#fff;border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:2.25rem 1.5rem;min-height:220px;height:auto;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;cursor:pointer;transition:all var(--transition-fast);overflow-wrap:break-word;word-break:break-word}.flashcard-display-box:hover{border-color:var(--color-brand-primary);box-shadow:var(--shadow-hover)}.flashcard-side-label{font-size:.75rem;font-weight:700;color:var(--text-light);text-transform:uppercase;letter-spacing:.05em;margin-bottom:1rem}.flashcard-images-grid{display:grid;gap:.75rem;width:100%;margin:.5rem auto 1rem}.flashcard-images-grid.grid-count-1{max-width:420px}.flashcard-images-grid.grid-count-2{max-width:520px}.flashcard-images-grid.grid-count-3{max-width:560px}.flashcard-images-grid.grid-count-4{max-width:520px}@media(max-width:640px){.flashcard-images-grid.grid-count-3{grid-template-columns:repeat(2,1fr)!important}}.flashcard-image-item{display:flex;flex-direction:column;align-items:center;justify-content:center;background:#f8fafc;border-radius:8px;padding:8px;border:1px solid var(--border-subtle, #e2e8f0);min-height:120px;box-sizing:border-box}.flashcard-image-img{max-width:100%;width:auto;height:auto;object-fit:contain;border-radius:4px;display:block}.flashcard-image-label{margin-top:4px;font-size:.75rem;font-weight:700;color:var(--text-muted, #475569)}.flashcard-content-text{font-weight:700;color:var(--text-main);line-height:1.4;margin-bottom:1rem;max-width:100%}.flashcard-hint-text{font-size:.9rem;font-style:italic;color:var(--text-muted);margin-top:.5rem}.flashcard-controls{display:flex;align-items:center;justify-content:space-between;padding:0 .5rem}@media(max-width:768px){.student-header{position:fixed;top:0;left:0;right:0;height:var(--student-header-height);z-index:50;background:#fffffffa;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border-subtle);box-shadow:0 1px 3px #0f172a0a}.student-header-inner{height:100%;padding:0 1rem;max-width:1024px;margin:0 auto;display:flex;align-items:center;justify-content:space-between}.module-activity-tabs{display:block;position:fixed;top:var(--student-header-height);left:0;right:0;height:var(--student-tabs-height);z-index:45;background:#fffffffa;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border-subtle);box-shadow:0 2px 6px #0f172a0a}.module-activity-tabs-track{max-width:1024px;margin:0 auto;padding:0 .75rem;height:100%;display:flex;align-items:center;gap:.25rem;overflow-x:auto;overflow-y:hidden;white-space:nowrap;-webkit-overflow-scrolling:touch;scrollbar-width:none}.module-activity-tabs-track::-webkit-scrollbar{display:none}.module-tab-btn{display:inline-flex;align-items:center;gap:.35rem;padding:0 .85rem;height:100%;border:none;border-bottom:2px solid transparent;background:transparent;color:var(--text-muted);font-size:.85rem;font-weight:600;cursor:pointer;flex-shrink:0;white-space:nowrap;touch-action:manipulation;transition:color var(--transition-fast),border-color var(--transition-fast);font-family:inherit}.module-tab-btn:hover{color:var(--text-main)}.module-tab-btn.tab-current{color:var(--color-brand-primary);border-bottom:2px solid var(--color-brand-primary);font-weight:700;background:transparent}.module-tab-btn.tab-visited{color:#334155}.module-tab-visited-indicator{color:#059669;font-size:.75rem;font-weight:800;margin-left:.15rem}.module-tab-btn.tab-future{color:var(--text-light)}.module-tab-icon{font-size:.95rem;line-height:1}.module-tab-label{line-height:1}.desktop-item-tabs,.desktop-content-toolbar{display:none!important}.mobile-item-tabs{display:block;position:fixed;top:calc(var(--student-header-height) + var(--student-tabs-height));left:0;right:0;height:var(--student-item-tabs-height);z-index:44;background:#f8fafcfa;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border-subtle);box-shadow:0 1px 3px #0f172a08}.mobile-item-tabs .activity-item-tabs-track{max-width:1024px;margin:0 auto;padding:0 .75rem;height:100%;display:flex;align-items:center;gap:.35rem;overflow-x:auto;overflow-y:hidden;white-space:nowrap;-webkit-overflow-scrolling:touch;scrollbar-width:none}.mobile-item-tabs .activity-item-tabs-track::-webkit-scrollbar{display:none}.mobile-item-tabs .activity-item-tab-btn{display:inline-flex;align-items:center;gap:.35rem;padding:0 .65rem;height:28px;border:1px solid var(--border-subtle);border-radius:var(--radius-full);background:#fff;color:var(--text-muted);font-size:.775rem;font-weight:600;cursor:pointer;flex-shrink:0;white-space:nowrap;touch-action:manipulation;transition:all var(--transition-fast);font-family:inherit}.mobile-item-tabs .activity-item-tab-btn:hover{color:var(--text-main);border-color:#cbd5e1}.mobile-item-tabs .activity-item-tab-btn.tab-active{color:var(--color-brand-primary);background:var(--color-brand-primary-light);border-color:#c7d2fe;font-weight:700}.mobile-item-tabs .item-tab-index-badge{display:inline-flex;align-items:center;justify-content:center;width:16px;height:16px;border-radius:50%;background:#e2e8f0;color:#475569;font-size:.65rem;font-weight:700;line-height:1}.mobile-item-tabs .activity-item-tab-btn.tab-active .item-tab-index-badge{background:var(--color-brand-primary);color:#fff}.mobile-content-toolbar{display:block;position:fixed;top:calc(var(--student-header-height) + var(--student-tabs-height));left:0;right:0;height:var(--student-content-toolbar-height);z-index:43;background:#f8fafcfa;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border-subtle);box-shadow:0 1px 2px #0f172a05}.study-session-container.has-item-tabs .mobile-content-toolbar{top:calc(var(--student-header-height) + var(--student-tabs-height) + var(--student-item-tabs-height))}.mobile-content-toolbar .content-toolbar-inner{max-width:1024px;margin:0 auto;padding:0 .85rem;height:100%}.student-bottom-nav{display:block;position:fixed;bottom:0;left:0;right:0;height:calc(var(--student-bottom-nav-height) + env(safe-area-inset-bottom,0px));z-index:50;background:#fffffffa;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--border-subtle);box-shadow:0 -2px 10px #0f172a0d;padding-bottom:env(safe-area-inset-bottom,0px)}.student-bottom-nav-inner{max-width:1024px;margin:0 auto;height:var(--student-bottom-nav-height);display:flex;align-items:center;justify-content:space-around;padding:0 1rem}.bottom-nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;background:transparent;border:none;color:var(--text-light);cursor:pointer;padding:6px 20px;border-radius:var(--radius-sm);font-family:inherit;font-size:.72rem;font-weight:600;transition:all var(--transition-fast);text-decoration:none;min-width:64px;min-height:44px}.bottom-nav-item:hover{color:var(--color-brand-primary)}.bottom-nav-item.is-active{color:var(--color-brand-primary);font-weight:700}.bottom-nav-item.is-disabled{opacity:.45;cursor:not-allowed}.bottom-nav-icon{display:flex;align-items:center;justify-content:center;line-height:1}.bottom-nav-label{line-height:1}.student-main{padding-top:calc(var(--student-header-height) + 12px);padding-bottom:calc(var(--student-bottom-nav-height) + env(safe-area-inset-bottom,0px) + 24px);padding-left:.75rem;padding-right:.75rem}.study-session-breadcrumb{display:none}.study-session-container{margin-top:calc(var(--student-tabs-height) + var(--student-content-toolbar-height) - 4px);border-radius:var(--radius-lg)}.study-session-container.has-item-tabs{margin-top:calc(var(--student-tabs-height) + var(--student-item-tabs-height) + var(--student-content-toolbar-height) - 4px)}.study-roadmap-sidebar{display:none}.study-session-body{flex-direction:column}.study-activity-stage{padding:1.25rem 1rem;scroll-margin-top:calc(var(--student-header-height) + var(--student-tabs-height) + var(--student-item-tabs-height) + var(--student-content-toolbar-height) + 10px)}}@media(max-width:640px){.student-header-inner{padding:0 .85rem}.student-brand-title{font-size:1.1rem}.student-main{padding-top:calc(var(--student-header-height) + 8px);padding-bottom:calc(var(--student-bottom-nav-height) + env(safe-area-inset-bottom,0px) + 20px);padding-left:.5rem;padding-right:.5rem}.student-hero{padding:1.5rem 1.25rem;border-radius:var(--radius-lg);margin-bottom:1.25rem}.student-hero h1{font-size:1.4rem}.student-hero p{font-size:.92rem}.student-cards-grid{grid-template-columns:1fr;gap:1rem}.study-session-container{border-radius:var(--radius-md)}.study-top-bar{padding:.5rem .75rem}.study-activity-stage{padding:1rem .75rem}.reading-title{font-size:1.15rem}.study-activity-title{font-size:1.2rem}.study-nav-bar{padding:.75rem .85rem}.btn-nav-study{flex:1;justify-content:center;padding:.75rem .5rem}.module-top-nav-bar{flex-direction:column;align-items:stretch;gap:.75rem}.module-navigation-bar{width:100%;justify-content:space-between}.btn-module-nav{flex:1;justify-content:center;padding:6px;font-size:.8rem}.nav-text-desktop{display:none}.nav-text-mobile{display:inline}}.module-top-nav-bar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem;margin-bottom:1.5rem}.module-top-nav-bar .student-breadcrumbs{margin-bottom:0}.module-navigation-bar{display:inline-flex;align-items:center;gap:.35rem;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-full);padding:4px 6px;box-shadow:var(--shadow-sm)}.btn-module-nav{display:inline-flex;align-items:center;gap:6px;background:transparent;border:none;border-radius:var(--radius-full);padding:6px 14px;font-size:.85rem;font-weight:600;color:var(--text-muted);cursor:pointer;transition:all .15s ease;white-space:nowrap;text-decoration:none}.btn-module-nav:hover:not(:disabled){background:var(--color-brand-primary-light);color:var(--color-brand-primary)}.btn-module-nav:disabled{opacity:.35;cursor:not-allowed}.btn-module-nav-all{background:var(--bg-surface-subtle);color:var(--text-main)}.btn-module-nav-all:hover:not(:disabled){background:var(--border-subtle);color:var(--text-main)}.nav-text-desktop{display:inline}.nav-text-mobile{display:none}.hierarchical-map-renderer{display:flex;flex-direction:column;gap:1.15rem;width:100%;max-width:840px;margin:0 auto}.hmap-empty-box{background:var(--bg-surface, #ffffff);border:1px solid var(--border-subtle, #e2e8f0);border-radius:var(--radius-lg, 16px);padding:2rem 1.25rem;text-align:center}.hmap-header{margin-bottom:1.25rem;padding:.15rem 0}.hmap-header-top{display:flex;align-items:center;justify-content:space-between;gap:1rem;width:100%}.hmap-title{margin:0;font-size:1.25rem;font-weight:700;letter-spacing:-.01em;color:var(--text-main, #0f172a);line-height:1.3;word-break:break-word}.hmap-progress-pill{display:inline-flex;align-items:center;justify-content:center;gap:.15rem;font-size:.92rem;font-weight:700;color:#334155;background:#f8fafc;border:1px solid #cbd5e1;padding:.28rem .68rem;border-radius:9999px;white-space:nowrap;font-variant-numeric:tabular-nums;box-shadow:0 1px 2px #0f172a0a;flex-shrink:0}.hmap-header-card{background:var(--bg-surface, #ffffff);border:1px solid var(--border-subtle, #e2e8f0);border-radius:var(--radius-lg, 16px);padding:1.15rem 1.25rem;box-shadow:var(--shadow-sm, 0 1px 3px rgba(15, 23, 42, .05))}.hmap-header-badge-row{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.5rem;margin-bottom:.65rem}.hmap-modality-badge{display:inline-flex;align-items:center;gap:.35rem;padding:.25rem .7rem;border-radius:9999px;background:#ccfbf1;color:#115e59;font-size:.78rem;font-weight:700}.hmap-progress-counter{font-size:.82rem;font-weight:600;color:#475569;background:#f1f5f9;padding:.25rem .65rem;border-radius:9999px}.hmap-main-title{margin:0 0 .4rem;font-weight:800;color:var(--text-main, #0f172a);line-height:1.3}.hmap-main-description{margin:0;color:var(--text-muted, #475569);line-height:1.5}.hmap-unanswered-banner{margin-top:.85rem;padding:.6rem .85rem;border-radius:10px;background:#fffbeb;border:1px solid #fde68a;color:#92400e;font-size:.85rem}.hmap-retry-mode-banner{margin-top:.65rem;padding:.6rem .85rem;border-radius:10px;background:#eff6ff;border:1px solid #bfdbfe;color:#1e40af;font-size:.85rem;font-weight:600}.hmap-accordions-list,.hmap-accordions-container{display:flex;flex-direction:column;gap:.9rem}.hmap-accordion-item{background:var(--bg-surface, #ffffff);border:1.5px solid #cbd5e1;border-radius:var(--radius-lg, 14px);overflow:hidden;box-shadow:0 2px 6px #0f172a0f;transition:border-color .2s ease,box-shadow .2s ease}.hmap-accordion-item.is-open{border-color:#0d9488;box-shadow:0 4px 14px #0d948824}.hmap-accordion-header,.hmap-accordion-header-wrap{background:linear-gradient(135deg,#f8fafc,#f1f5f9);border-bottom:1px solid transparent;transition:background .2s ease,border-color .2s ease}.hmap-accordion-item.is-open .hmap-accordion-header,.hmap-accordion-item.is-open .hmap-accordion-header-wrap{background:linear-gradient(135deg,#f0fdfa,#e0f2fe);border-bottom:1.5px solid #ccfbf1}.hmap-accordion-toggle,.hmap-accordion-header-button{width:100%;min-height:58px;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.95rem 1.25rem;background:transparent;border:none;text-align:left;cursor:pointer;font-family:inherit;color:var(--text-main, #0f172a);transition:background-color .15s ease}.hmap-accordion-toggle:hover,.hmap-accordion-header-button:hover{background:#0d94880f}.hmap-accordion-toggle:focus-visible,.hmap-accordion-header-button:focus-visible{outline:2px solid #0d9488;outline-offset:-2px}.hmap-branch-header-main{flex:1 1 auto;min-width:0;display:flex;align-items:center;gap:.75rem}.hmap-branch-index-badge{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;background:#0d9488;color:#fff;font-size:.88rem;font-weight:800;flex-shrink:0;box-shadow:0 1px 3px #0f172a2e;transition:background-color .2s ease,transform .2s ease}.hmap-accordion-item.is-open .hmap-branch-index-badge{background:#0d9488;transform:scale(1.04)}.hmap-branch-title,.hmap-branch-title-text{font-size:1.05rem;font-weight:700;letter-spacing:-.01em;color:#0f766e;line-height:1.35;word-break:break-word}.hmap-accordion-item.is-open .hmap-branch-title,.hmap-accordion-item.is-open .hmap-branch-title-text{color:#0f766e}.hmap-branch-header-aside{display:flex;align-items:center;gap:.85rem;flex-shrink:0}.hmap-branch-header-metrics{display:flex;align-items:center;gap:.6rem;flex-shrink:0}.hmap-branch-questions-badge{display:inline-flex;align-items:center;justify-content:center;font-size:.84rem;font-weight:600;color:#334155;background:#fff;border:1px solid #cbd5e1;padding:.28rem .65rem;border-radius:8px;white-space:nowrap;font-variant-numeric:tabular-nums;box-shadow:0 1px 2px #0f172a0a}.hmap-branch-pct-badge{display:inline-flex;align-items:center;justify-content:center;font-size:.82rem;font-weight:800;padding:.26rem .65rem;border-radius:9999px;white-space:nowrap;font-variant-numeric:tabular-nums;box-shadow:0 1px 2px #0f172a0d}.hmap-branch-pct-badge.badge-pass{background:#dcfce7;color:#166534;border:1px solid #86efac}.hmap-branch-pct-badge.badge-review{background:#fef3c7;color:#92400e;border:1px solid #fcd34d}.hmap-branch-counter-pill,.hmap-branch-counter-badge{display:inline-flex;align-items:center;justify-content:center;font-size:.82rem;font-weight:700;padding:.26rem .65rem;border-radius:9999px;border:1px solid #cbd5e1;background:#fff;color:#334155;white-space:nowrap;flex-shrink:0;font-variant-numeric:tabular-nums;box-shadow:0 1px 2px #0f172a0d}.hmap-branch-counter-pill.is-partial,.hmap-branch-counter-badge.is-partial{background:#fef3c7;border-color:#f59e0b;color:#92400e}.hmap-branch-counter-pill.is-complete,.hmap-branch-counter-badge.is-complete{background:#dcfce7;border-color:#22c55e;color:#166534}.hmap-branch-header-score{font-size:.78rem;font-weight:700;padding:.24rem .6rem;border-radius:9999px;background:#0f766e;color:#fff;white-space:nowrap;flex-shrink:0}.hmap-accordion-chevron{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:8px;background:#0d9488;border:1px solid #0d9488;font-size:.95rem;font-weight:700;color:#fff;flex-shrink:0;transition:background-color .15s ease,color .15s ease,border-color .15s ease,transform .15s ease}.hmap-accordion-chevron.is-expanded,.hmap-accordion-item.is-open .hmap-accordion-chevron{background:#0d9488;border-color:#0d9488;color:#fff}@media(max-width:640px){.hmap-header{margin-bottom:.95rem}.hmap-header-top{gap:.75rem}.hmap-title{font-size:1.1rem}.hmap-progress-pill{font-size:.85rem;padding:.22rem .55rem}.hmap-accordion-header-button,.hmap-accordion-toggle{flex-direction:column;align-items:flex-start;gap:.75rem;padding:.85rem 1rem}.hmap-branch-header-main{width:100%}.hmap-branch-header-aside{width:100%;justify-content:space-between}.hmap-branch-header-metrics{gap:.45rem}.hmap-branch-questions-badge{font-size:.8rem;padding:.2rem .5rem}.hmap-branch-pct-badge{font-size:.78rem;padding:.2rem .5rem}}.hmap-accordion-title-question-container{padding:.85rem 1.15rem .95rem;background:#f8fafc}.hmap-accordion-body{padding:1rem}.hmap-branch-description{margin:0 0 .85rem;color:#475569;line-height:1.45}.hmap-fields-list{display:flex;flex-direction:column;gap:.85rem}.hmap-question-block{border:1px solid #e2e8f0;border-radius:12px;padding:.85rem .95rem;background:#fff;transition:border-color .15s ease,background-color .15s ease}.hmap-question-block.hmap-field-answered{border-color:#99f6e4;background:#f0fdfa}.hmap-question-block.hmap-field-locked-correct{border-color:#86efac;background:#f0fdf4}.hmap-question-block.hmap-field-correct{border-color:#22c55e;background:#f0fdf4}.hmap-question-block.hmap-field-incorrect{border-color:#ef4444;background:#fef2f2}.hmap-question-header{display:flex;align-items:flex-start;justify-content:space-between;gap:.65rem;margin-bottom:.55rem}.hmap-question-prompt{font-weight:600;color:#1e293b;line-height:1.4;flex:1}.hmap-unanswered-pill{font-size:.72rem;font-weight:600;padding:.15rem .5rem;border-radius:9999px;background:#f1f5f9;color:#64748b;white-space:nowrap}.hmap-status-badge{font-size:.76rem;font-weight:700;padding:.2rem .55rem;border-radius:9999px;white-space:nowrap}.hmap-status-badge.badge-correct,.hmap-status-badge.badge-locked{background:#dcfce7;color:#166534}.hmap-status-badge.badge-incorrect{background:#fee2e2;color:#991b1b}.hmap-select-wrapper{width:100%}.hmap-select-input{width:100%;min-height:46px;padding:.6rem .8rem;border:1px solid #cbd5e1;border-radius:10px;background:#fff;color:#0f172a;font-family:inherit;font-weight:500;cursor:pointer}.hmap-select-input:disabled{background:#f8fafc;color:#334155;cursor:not-allowed}.hmap-feedback-panel{margin-top:.75rem;padding-top:.65rem;border-top:1px dashed rgba(15,23,42,.12);font-size:.88rem;line-height:1.45;display:flex;flex-direction:column;gap:.35rem}.hmap-correct-answer-reveal{color:#991b1b;background:#fee2e299;padding:.4rem .6rem;border-radius:8px}.hmap-explanation-text{color:#334155}.hmap-results-summary{display:flex;flex-direction:column;gap:.9rem}.hmap-overall-summary-card,.hmap-branches-summary-card,.hmap-attempts-history{background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:1.1rem 1.2rem}.hmap-summary-heading,.hmap-subheading{margin:0 0 .85rem;font-weight:800;color:#0f172a}.hmap-metrics-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.65rem;margin-bottom:1rem}@media(min-width:640px){.hmap-metrics-grid{grid-template-columns:repeat(4,1fr)}}.hmap-metric-item{background:#f8fafc;border:1px solid #e2e8f0;border-radius:10px;padding:.65rem .75rem;display:flex;flex-direction:column;gap:.2rem}.hmap-metric-item.metric-correct{background:#f0fdf4;border-color:#bbf7d0}.hmap-metric-item.metric-incorrect{background:#fef2f2;border-color:#fecaca}.hmap-metric-item.metric-percentage{background:#f0fdfa;border-color:#99f6e4}.hmap-metric-label{font-size:.76rem;color:#475569;font-weight:600}.hmap-metric-value{font-size:1.25rem;font-weight:800;color:#0f172a}.hmap-retry-actions{display:flex;flex-direction:column;gap:.6rem}@media(min-width:640px){.hmap-retry-actions{flex-direction:row;flex-wrap:wrap}}.btn-hmap-retry{min-height:44px;padding:.65rem 1rem;border-radius:10px;font-family:inherit;font-size:.9rem;font-weight:700;cursor:pointer;border:1px solid transparent}.btn-hmap-retry-incorrect{background:#0d9488;color:#fff}.btn-hmap-retry-incorrect:hover{background:#0f766e}.btn-hmap-retry-full{background:#f1f5f9;color:#1e293b;border-color:#cbd5e1}.btn-hmap-retry-full:hover{background:#e2e8f0}.hmap-branch-summary-list{display:flex;flex-direction:column;gap:.55rem}.hmap-branch-summary-row{display:flex;flex-direction:column;gap:.35rem;padding:.65rem .8rem;border-radius:10px;background:#f8fafc;border:1px solid #e2e8f0}@media(min-width:640px){.hmap-branch-summary-row{flex-direction:row;align-items:center;justify-content:space-between}}.hmap-branch-summary-title{font-weight:700;color:#1e293b;font-size:.92rem}.hmap-branch-summary-stats{display:flex;align-items:center;gap:.75rem;font-size:.84rem;color:#475569;flex-wrap:wrap}.hmap-branch-pct-pill{padding:.15rem .55rem;border-radius:9999px;background:#ccfbf1;color:#115e59;font-weight:700}.hmap-attempts-list{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:.4rem}.hmap-attempt-item{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.5rem;padding:.45rem .7rem;background:#f8fafc;border-radius:8px;font-size:.84rem;color:#334155}.hmap-submit-footer{display:flex;justify-content:stretch}.btn-hmap-submit{width:100%;min-height:48px;padding:.85rem 1.25rem;border:none;border-radius:12px;background:#0d9488;color:#fff;font-family:inherit;font-size:1rem;font-weight:700;cursor:pointer;box-shadow:0 2px 6px #0d948840}.btn-hmap-submit:hover{background:#0f766e}