@import"https://fonts.googleapis.com/css2?family=Bitter:wght@400;600;700&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap";:root{--color-blue-50: #eff6ff;--color-blue-100: #dbeafe;--color-blue-200: #bfdbfe;--color-blue-300: #93c5fd;--color-blue-500: #3b82f6;--color-blue-600: #2563eb;--color-blue-700: #1d4ed8;--color-blue-800: #1e40af;--color-blue-900: #1e3a8a;--color-slate-50: #f8fafc;--color-slate-100: #f1f5f9;--color-slate-200: #e2e8f0;--color-slate-300: #cbd5e1;--color-slate-400: #94a3b8;--color-slate-500: #64748b;--color-slate-600: #475569;--color-slate-700: #334155;--color-slate-800: #1e293b;--color-slate-900: #0f172a;--color-slate-950: #020617;--color-amber-50: #fffbeb;--color-amber-100: #fef3c7;--color-amber-400: #fbbf24;--color-amber-500: #f59e0b;--color-amber-600: #d97706;--color-emerald-50: #ecfdf5;--color-emerald-100: #d1fae5;--color-emerald-600: #059669;--color-emerald-700: #047857;--color-red-50: #fef2f2;--color-red-100: #fee2e2;--color-red-600: #dc2626;--color-red-700: #b91c1c;--color-sky-50: #f0f9ff;--color-sky-100: #e0f2fe;--color-sky-200: #bae6fd;--color-sky-300: #7dd3fc;--color-sky-500: #0ea5e9;--color-sky-600: #0284c7;--color-sky-700: #0369a1;--color-sky-800: #075985;--color-surface-dark: #0f1923;--color-surface-dark-border: rgba(255, 255, 255, .07);--color-surface-dark-hover: rgba(255, 255, 255, .08);--color-surface-dark-active: rgba(255, 255, 255, .13);--color-student-bg: #f4f8fb;--color-student-sidebar-bg: #ffffff;--color-student-sidebar-border: #e2eaf2;--color-student-topbar-bg: #ffffff;--color-student-topbar-border: #e2eaf2;--color-student-nav-active-bg: #e0f2fe;--color-student-nav-active-text: #0284c7;--color-student-nav-hover-bg: #f0f9ff;--color-student-nav-hover-text: #0369a1;--color-student-card-border: #e2eaf2;--color-student-card-hover: rgba(2, 132, 199, .06);--color-bg-page: var(--color-student-bg);--color-bg-surface: #ffffff;--color-bg-subsurface: var(--color-slate-100);--color-text-primary: var(--color-slate-900);--color-text-secondary: var(--color-slate-600);--color-text-muted: var(--color-slate-400);--color-text-on-dark: #ffffff;--color-interactive: var(--color-blue-600);--color-interactive-hover: var(--color-blue-700);--color-interactive-light: var(--color-blue-50);--color-interactive-border: var(--color-blue-200);--color-accent-gold: var(--color-amber-500);--color-accent-gold-hover: var(--color-amber-600);--color-accent-gold-light: var(--color-amber-50);--color-success: var(--color-emerald-600);--color-success-light: var(--color-emerald-50);--color-danger: var(--color-red-600);--color-danger-light: var(--color-red-50);--color-border-subtle: var(--color-slate-100);--color-border-card: var(--color-slate-200);--color-border-strong: var(--color-slate-400);--color-focus-ring: var(--color-blue-500);--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--space-16: 64px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .04);--shadow-card: 0 1px 3px rgba(15, 23, 42, .06), 0 1px 2px rgba(15, 23, 42, .04);--shadow-md: 0 4px 8px rgba(15, 23, 42, .08), 0 2px 4px rgba(15, 23, 42, .04);--shadow-lg: 0 8px 24px rgba(15, 23, 42, .1), 0 4px 8px rgba(15, 23, 42, .06);--font-headline: "Bitter", "Georgia", serif;--font-family: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{font-family:var(--font-family);background-color:var(--color-bg-page);color:var(--color-text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;min-height:100dvh}h1,h2,h3,h4,h5,h6{font-family:var(--font-headline);color:var(--color-text-primary);font-weight:700;line-height:1.25}:focus-visible{outline:2px solid var(--color-focus-ring);outline-offset:2px}.app-container{width:100%;max-width:1280px;margin:0 auto;padding:0 var(--space-4)}@media(min-width:768px){.app-container{padding:0 var(--space-6)}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);min-height:44px;padding:var(--space-2) var(--space-4);font-family:var(--font-family);font-size:.9rem;font-weight:600;border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;transition:background-color .15s ease,border-color .15s ease,box-shadow .15s ease;-webkit-user-select:none;user-select:none;text-decoration:none;letter-spacing:-.01em}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--color-interactive);color:#fff;border-color:var(--color-interactive)}.btn-primary:hover:not(:disabled){background-color:var(--color-interactive-hover);border-color:var(--color-interactive-hover)}.btn-secondary{background-color:var(--color-bg-surface);color:var(--color-text-primary);border-color:var(--color-border-card)}.btn-secondary:hover:not(:disabled){background-color:var(--color-bg-subsurface);border-color:var(--color-border-strong)}.btn-ghost{background-color:transparent;color:var(--color-text-secondary);border-color:transparent}.btn-ghost:hover:not(:disabled){background-color:var(--color-bg-subsurface);color:var(--color-text-primary)}.btn-sm{min-height:36px;padding:var(--space-1) var(--space-3);font-size:.825rem}.card{background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-lg);padding:var(--space-5);box-shadow:var(--shadow-card)}.badge{display:inline-flex;align-items:center;gap:var(--space-1);padding:3px var(--space-3);font-size:.72rem;font-weight:600;border-radius:var(--radius-sm);letter-spacing:.02em}.badge-blue{background-color:var(--color-interactive-light);color:var(--color-interactive-hover);border:1px solid var(--color-interactive-border)}.badge-amber{background-color:var(--color-accent-gold-light);color:#92400e;border:1px solid var(--color-amber-100)}.badge-slate{background-color:var(--color-bg-subsurface);color:var(--color-text-secondary);border:1px solid var(--color-border-card)}.badge-emerald{background-color:var(--color-success-light);color:var(--color-emerald-700);border:1px solid var(--color-emerald-100)}.badge-red{background-color:var(--color-danger-light);color:var(--color-red-700);border:1px solid var(--color-red-100)}.badge-teal{@extend .badge-blue;}.badge-gold{@extend .badge-amber;}.form-group{margin-bottom:var(--space-4)}.form-label{display:block;font-size:.825rem;font-weight:600;color:var(--color-text-secondary);margin-bottom:var(--space-1)}.form-input,.form-select,.form-textarea{width:100%;min-height:44px;padding:var(--space-2) var(--space-3);font-family:inherit;font-size:.9rem;color:var(--color-text-primary);background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-md);transition:border-color .15s ease,box-shadow .15s ease}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--color-focus-ring);box-shadow:0 0 0 3px #3b82f61f}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background-color:#0f172a99;display:flex;align-items:center;justify-content:center;padding:var(--space-4);z-index:1000}.modal-content{background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-xl);max-width:600px;width:100%;max-height:88vh;overflow-y:auto;box-shadow:var(--shadow-lg);padding:var(--space-6)}.alert{padding:var(--space-3) var(--space-4);border-radius:var(--radius-md);font-size:.875rem;margin-bottom:var(--space-4);display:flex;align-items:flex-start;gap:var(--space-3)}.alert-info{background-color:var(--color-interactive-light);border:1px solid var(--color-interactive-border);color:var(--color-interactive-hover)}.alert-warning{background-color:var(--color-accent-gold-light);border:1px solid var(--color-amber-100);color:#92400e}.alert-danger{background-color:var(--color-danger-light);border:1px solid var(--color-red-100);color:var(--color-danger)}.student-header{background-color:var(--color-surface-dark);color:var(--color-text-on-dark);border-bottom:1px solid var(--color-surface-dark-border);position:sticky;top:0;z-index:100}.student-header-inner{display:flex;align-items:center;justify-content:space-between;height:58px;gap:var(--space-4)}.brand-logo{display:flex;align-items:center;gap:var(--space-3);text-decoration:none;color:var(--color-text-on-dark)}.brand-title{font-family:var(--font-headline);font-size:1.15rem;font-weight:700;letter-spacing:-.01em;color:#fff}.brand-subtitle{font-size:.7rem;font-weight:500;color:#ffffff6b;letter-spacing:.01em;margin-top:1px}.student-primary-nav{display:flex;align-items:center;gap:2px}.student-nav-tab{display:inline-flex;align-items:center;gap:var(--space-2);padding:6px 14px;font-family:var(--font-family);font-size:.85rem;font-weight:600;color:#ffffff8c;border-radius:var(--radius-md);text-decoration:none;white-space:nowrap;min-height:38px;border:1px solid transparent;background:none;cursor:pointer;transition:background-color .12s ease,color .12s ease}.student-nav-tab:hover{background-color:var(--color-surface-dark-hover);color:#fff}.student-nav-tab.active{background-color:var(--color-surface-dark-active);color:#fff;border-color:#ffffff1f}.material-context-bar{background-color:var(--color-bg-surface);border-bottom:1px solid var(--color-border-subtle);padding:var(--space-2) 0}.material-context-inner{display:flex;align-items:center;gap:var(--space-3)}.material-picker-trigger{display:inline-flex;align-items:center;gap:var(--space-2);padding:6px 12px;height:36px;background-color:var(--color-bg-subsurface);border:1px solid var(--color-border-card);border-radius:var(--radius-md);font-family:var(--font-family);font-size:.875rem;font-weight:600;color:var(--color-text-primary);cursor:pointer;transition:border-color .15s ease,background-color .15s ease;max-width:360px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.material-picker-trigger:hover{border-color:var(--color-interactive);background-color:var(--color-interactive-light)}.material-picker-trigger-label{font-size:.72rem;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.06em;flex-shrink:0}.material-picker-wrapper{position:relative}.material-picker-panel{position:absolute;top:calc(100% + 6px);left:0;background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);min-width:280px;max-width:400px;z-index:200;overflow:hidden}.material-picker-header{padding:var(--space-3) var(--space-4);border-bottom:1px solid var(--color-border-subtle);font-size:.75rem;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.06em}.material-picker-list{padding:var(--space-2);max-height:280px;overflow-y:auto}.material-picker-item{display:block;width:100%;padding:var(--space-3) var(--space-3);text-align:left;border:none;background:none;border-radius:var(--radius-md);cursor:pointer;font-family:var(--font-family);transition:background-color .1s ease}.material-picker-item:hover{background-color:var(--color-bg-subsurface)}.material-picker-item.active{background-color:var(--color-interactive-light)}.material-picker-item-title{font-size:.875rem;font-weight:600;color:var(--color-text-primary);line-height:1.4}.material-picker-item.active .material-picker-item-title{color:var(--color-interactive)}.material-picker-item-sub{font-size:.775rem;color:var(--color-text-muted);margin-top:2px}.beranda-summary{background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-lg);padding:var(--space-4) var(--space-5);margin-bottom:var(--space-4);box-shadow:var(--shadow-sm)}.beranda-summary-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-2)}.beranda-summary-label{font-size:.75rem;font-weight:700;color:var(--color-interactive);text-transform:uppercase;letter-spacing:.05em}.beranda-summary-date{font-size:.75rem;color:var(--color-text-muted)}.beranda-summary-text{font-size:.875rem;color:var(--color-text-secondary);line-height:1.6;max-width:640px;margin:0}.beranda-summary-tags{display:flex;align-items:center;gap:var(--space-2);margin-top:var(--space-3);flex-wrap:wrap}.beranda-section-heading{font-size:.8rem;font-weight:700;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:var(--space-3)}.beranda-actions-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--space-3)}.beranda-action-card{display:flex;align-items:flex-start;gap:var(--space-4);padding:var(--space-4) var(--space-5);background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-lg);cursor:pointer;text-align:left;font-family:var(--font-family);transition:border-color .15s ease,box-shadow .15s ease,transform .12s ease;box-shadow:var(--shadow-sm)}.beranda-action-card:hover{transform:translateY(-1px);box-shadow:var(--shadow-md);border-color:var(--color-interactive)}.beranda-action-card:active{transform:translateY(0)}.beranda-action-card--primary{background-color:var(--color-interactive);border-color:var(--color-interactive)}.beranda-action-card--primary:hover{border-color:var(--color-interactive-hover)}.beranda-action-icon{width:40px;height:40px;border-radius:var(--radius-md);background-color:var(--color-interactive-light);color:var(--color-interactive);display:flex;align-items:center;justify-content:center;flex-shrink:0}.beranda-action-icon--primary{background-color:#ffffff26;color:#fff}.beranda-action-title{font-size:.925rem;font-weight:700;color:var(--color-text-primary);margin-bottom:4px}.beranda-action-title--primary{color:#fff}.beranda-action-desc{font-size:.8rem;color:var(--color-text-muted);line-height:1.45}.beranda-action-desc--primary{color:#ffffffb8}.beranda-progress-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--space-3);margin-bottom:var(--space-5)}.progress-stat-card{background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-lg);padding:var(--space-4) var(--space-5);box-shadow:var(--shadow-sm)}.progress-stat-label{font-size:.75rem;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:var(--space-2)}.progress-stat-value{font-family:var(--font-headline);font-size:1.75rem;font-weight:700;color:var(--color-text-primary);line-height:1}.progress-stat-sub{font-size:.8rem;color:var(--color-text-muted);margin-top:var(--space-1)}.topic-weakness-list{display:flex;flex-wrap:wrap;gap:var(--space-2);margin-top:var(--space-2)}.el-tab-bar{display:flex;align-items:center;gap:2px;background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-lg);padding:var(--space-2);overflow-x:auto;scrollbar-width:none}.el-tab-bar::-webkit-scrollbar{display:none}.el-tab-back{display:inline-flex;align-items:center;gap:var(--space-1);padding:6px 12px;font-family:var(--font-family);font-size:.8rem;font-weight:600;color:var(--color-text-muted);border:none;background:none;cursor:pointer;border-radius:var(--radius-md);white-space:nowrap;transition:color .12s ease,background-color .12s ease;min-height:36px;flex-shrink:0}.el-tab-back:hover{color:var(--color-text-primary);background-color:var(--color-bg-subsurface)}.el-tab-divider{width:1px;height:18px;background-color:var(--color-border-card);flex-shrink:0;margin:0 var(--space-1)}.el-tab-item{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;font-family:var(--font-family);font-size:.825rem;font-weight:600;color:var(--color-text-muted);border:1px solid transparent;background:none;cursor:pointer;border-radius:var(--radius-md);white-space:nowrap;min-height:36px;transition:background-color .12s ease,color .12s ease}.el-tab-item:hover{background-color:var(--color-bg-subsurface);color:var(--color-text-primary)}.el-tab-active{background-color:var(--color-surface-dark);color:#fff}.el-tab-active:hover{background-color:var(--color-blue-800);color:#fff}.el-tab-icon{display:flex;align-items:center;opacity:.7}.el-tab-active .el-tab-icon{opacity:1}.el-hub-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-3)}@media(max-width:580px){.el-hub-grid{grid-template-columns:1fr}}@media(min-width:900px){.el-hub-grid{grid-template-columns:repeat(3,1fr)}}.el-hub-card{display:flex;align-items:flex-start;gap:var(--space-4);padding:var(--space-5);background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-lg);cursor:pointer;text-align:left;font-family:var(--font-family);transition:border-color .15s ease,box-shadow .15s ease,transform .12s ease;box-shadow:var(--shadow-sm)}.el-hub-card--wide{grid-column:1 / -1}.el-hub-card:hover{border-color:var(--color-interactive);box-shadow:var(--shadow-md);transform:translateY(-1px)}.el-hub-card:active{transform:translateY(0);box-shadow:var(--shadow-sm)}.el-hub-card-icon{width:42px;height:42px;border-radius:var(--radius-md);background-color:var(--color-interactive-light);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--color-interactive);border:1px solid var(--color-interactive-border)}.el-hub-card-body{flex:1;min-width:0}.el-hub-card-title{font-size:.95rem;font-weight:700;color:var(--color-text-primary);margin-bottom:4px}.el-hub-card-desc{font-size:.825rem;color:var(--color-text-muted);line-height:1.5}.el-hub-card-arrow{font-size:1rem;color:var(--color-text-muted);flex-shrink:0;align-self:center;transition:transform .15s ease,color .15s ease}.el-hub-card:hover .el-hub-card-arrow{transform:translate(3px);color:var(--color-interactive)}.flashcard-container{max-width:660px;margin:var(--space-5) auto;perspective:1200px}.flashcard-scene{width:100%;height:320px;cursor:pointer;-webkit-user-select:none;user-select:none}.flashcard-card{width:100%;height:100%;position:relative;transform-style:preserve-3d;transition:transform .45s cubic-bezier(.4,0,.2,1);border-radius:var(--radius-lg)}.flashcard-card.flipped{transform:rotateY(180deg)}.flashcard-face{position:absolute;top:0;right:0;bottom:0;left:0;backface-visibility:hidden;border-radius:var(--radius-lg);padding:var(--space-6);display:flex;flex-direction:column;justify-content:space-between;border:1px solid var(--color-border-card);background-color:var(--color-bg-surface)}.flashcard-back{background-color:var(--color-interactive-light);border-color:var(--color-interactive-border);transform:rotateY(180deg)}.flashcard-question{font-family:var(--font-headline);font-size:1.25rem;font-weight:700;line-height:1.4;color:var(--color-text-primary);margin:var(--space-4) 0}.flashcard-answer{font-size:1.05rem;font-weight:600;line-height:1.55;color:var(--color-text-primary);margin:var(--space-3) 0}.flashcard-controls{display:flex;align-items:center;justify-content:space-between;max-width:660px;margin:var(--space-4) auto;gap:var(--space-3);flex-wrap:wrap}.timeline-list{position:relative;max-width:780px;margin:var(--space-5) auto;padding-left:var(--space-8)}.timeline-list:before{content:"";position:absolute;top:10px;bottom:20px;left:17px;width:2px;background:linear-gradient(to bottom,var(--color-sky-300),var(--color-sky-100))}.timeline-item{position:relative;margin-bottom:var(--space-6)}.timeline-dot{position:absolute;left:-32px;top:18px;width:14px;height:14px;border-radius:50%;background-color:var(--color-sky-600);border:3px solid #ffffff;box-shadow:0 0 0 3px #0284c740;transition:transform .15s ease}.timeline-item:hover .timeline-dot{transform:scale(1.2)}.timeline-content{background-color:#fff;border:1px solid var(--color-sky-200);border-radius:var(--radius-lg);padding:var(--space-5);box-shadow:0 2px 8px #0284c70a;transition:all .2s ease}.timeline-content:hover{border-color:var(--color-sky-300);box-shadow:0 6px 16px #0284c714}.timeline-card{background-color:#fff;border:1px solid var(--color-sky-200);border-radius:var(--radius-lg);padding:var(--space-4) var(--space-5);transition:all .2s ease}.timeline-card:hover{border-color:var(--color-sky-300);box-shadow:0 4px 12px #0284c714}.timeline-date{font-size:.775rem;font-weight:700;color:var(--color-sky-700);letter-spacing:.03em}.timeline-title{font-family:var(--font-headline);font-size:1.1rem;font-weight:800;color:var(--color-slate-900);margin:var(--space-1) 0 var(--space-2) 0}.tory-container{max-width:860px;margin:0 auto;background-color:#fff;border:1px solid var(--color-sky-200);border-radius:var(--radius-xl);overflow:hidden;display:flex;flex-direction:column;height:min(600px,calc(100vh - 210px));min-height:460px;box-shadow:0 4px 20px #0284c70f}.tory-messages{flex:1;overflow-y:auto;padding:var(--space-5);display:flex;flex-direction:column;gap:var(--space-4);background-color:#f8fafc}.tory-bubble,.chat-bubble{max-width:82%;padding:var(--space-4);font-size:.9rem;line-height:1.6;word-break:break-word}.tory-bubble.student,.chat-bubble.bubble-student{align-self:flex-end;background:linear-gradient(135deg,var(--color-sky-600),var(--color-sky-700));color:#fff;border-radius:18px 18px 4px;box-shadow:0 2px 6px #0284c733}.tory-bubble.tory,.chat-bubble.bubble-tory{align-self:flex-start;background-color:#fff;border:1px solid var(--color-sky-200);color:var(--color-slate-800);border-radius:18px 18px 18px 4px;box-shadow:0 2px 8px #0284c70a}.tory-input-bar{display:flex;gap:var(--space-2);padding:var(--space-3) var(--space-4);background-color:#fff;border-top:1px solid var(--color-sky-100)}.mindmap-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:var(--space-3);max-width:1040px;margin:0 auto var(--space-4)}.mindmap-title{font-size:1.15rem;font-weight:800;color:var(--color-text-primary);margin:0}.mindmap-subtitle{font-size:.8rem;color:var(--color-text-muted);margin:var(--space-1) 0 0}.mindmap-layout{display:grid;grid-template-columns:1fr 320px;gap:var(--space-4);max-width:1040px;margin:0 auto}@media(max-width:860px){.mindmap-layout{grid-template-columns:1fr}}.mindmap-canvas{position:relative;background-color:var(--color-bg-subsurface);border:1px solid var(--color-border-card);border-radius:var(--radius-lg);overflow:hidden;height:520px;touch-action:none;-webkit-user-select:none;user-select:none}.mindmap-controls{position:absolute;top:var(--space-3);right:var(--space-3);display:flex;align-items:center;gap:2px;background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-md);padding:2px;z-index:10;box-shadow:var(--shadow-sm)}.mindmap-ctrl-btn{width:30px;height:30px;border:none;background:none;cursor:pointer;font-family:var(--font-family);font-size:.9rem;font-weight:700;color:var(--color-text-secondary);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;transition:background-color .1s ease}.mindmap-ctrl-btn:hover{background-color:var(--color-bg-subsurface);color:var(--color-text-primary)}.mindmap-ctrl-fit{font-size:.7rem;width:auto;padding:0 8px;text-transform:uppercase;letter-spacing:.04em}.mindmap-ctrl-zoom{font-size:.7rem;font-weight:600;color:var(--color-text-muted);min-width:36px;text-align:center}.mindmap-edge{fill:none;stroke:var(--color-slate-300);stroke-width:1.5}.mindmap-node-rect{transition:opacity .12s ease}.mindmap-node-group:hover .mindmap-node-rect{opacity:.85}.mindmap-node-ring{fill:none;stroke:var(--color-interactive);stroke-width:2;opacity:.6}.mindmap-node-label{font-family:var(--font-family);font-size:12px;font-weight:600;pointer-events:none}.mindmap-detail{background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-lg);padding:var(--space-5);height:fit-content;position:sticky;top:90px;box-shadow:var(--shadow-sm)}.mindmap-detail-title{font-size:1.1rem;font-weight:700;color:var(--color-text-primary);margin:0 0 var(--space-2);line-height:1.35}.mindmap-detail-body{font-size:.875rem;color:var(--color-text-secondary);line-height:1.6;margin:0 0 var(--space-4)}.mindmap-detail-source{background-color:var(--color-bg-subsurface);padding:var(--space-4);border-radius:var(--radius-md);border:1px solid var(--color-border-card)}.mindmap-detail-source-label{font-size:.75rem;font-weight:700;color:var(--color-blue-700);margin-bottom:var(--space-1)}.mindmap-detail-source-text{font-size:.875rem;font-style:italic;color:var(--color-text-primary);line-height:1.5;margin:0}.quiz-container{max-width:780px;margin:0 auto;padding:var(--space-6) 0 var(--space-12)}.quiz-segmented-tabs{display:flex;background-color:var(--color-bg-subsurface);border:1px solid var(--color-border-card);padding:4px;border-radius:var(--radius-lg);margin-bottom:var(--space-6);gap:4px}.quiz-segmented-tab{flex:1;display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:10px 16px;font-family:var(--font-family);font-size:.9rem;font-weight:600;color:var(--color-text-secondary);background:transparent;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.quiz-segmented-tab:hover{color:var(--color-text-primary);background-color:#fff9}.quiz-segmented-tab.active{background-color:var(--color-bg-surface);color:var(--color-blue-700);box-shadow:0 1px 3px #00000014}.quiz-badge-assignment{display:inline-flex;align-items:center;gap:6px;background-color:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe;padding:4px 10px;border-radius:var(--radius-full);font-size:.78rem;font-weight:700}.quiz-badge-practice{display:inline-flex;align-items:center;gap:6px;background-color:#ecfdf5;color:#047857;border:1px solid #a7f3d0;padding:4px 10px;border-radius:var(--radius-full);font-size:.78rem;font-weight:700}.quiz-header-bar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:var(--space-3);margin-bottom:var(--space-6)}.quiz-option-label{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);border:1px solid 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#0284c740}.student-brand-title{font-family:var(--font-headline);font-size:1.125rem;font-weight:700;color:var(--color-slate-900);line-height:1.1;display:block}.student-brand-subtitle{font-size:.68rem;font-weight:600;color:var(--color-sky-700);letter-spacing:.02em;display:block}.sidebar-close-btn{display:none;background:none;border:none;color:var(--color-slate-500);cursor:pointer;padding:4px;border-radius:var(--radius-sm)}.student-sidebar-nav{flex:1;padding:var(--space-4) var(--space-3);display:flex;flex-direction:column;gap:4px;overflow-y:auto}.student-sidebar-nav-item{display:flex;align-items:center;gap:var(--space-3);padding:10px 14px;border-radius:var(--radius-md);border:1px solid transparent;background:transparent;color:var(--color-slate-600);font-size:.875rem;font-weight:600;cursor:pointer;transition:all .15s 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var(--space-2)}.dropdown-avatar-large{width:40px;height:40px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--color-sky-600),var(--color-sky-700));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.95rem;flex-shrink:0}.student-badge-pill{display:inline-block;background-color:var(--color-sky-50);color:var(--color-sky-700);font-size:.68rem;font-weight:600;padding:2px 6px;border-radius:var(--radius-sm);margin-top:4px}.profile-dropdown-divider{height:1px;background-color:var(--color-slate-100);margin:var(--space-1) 0}.profile-dropdown-item{width:100%;display:flex;align-items:center;gap:var(--space-3);padding:8px 12px;border-radius:var(--radius-md);border:none;background:transparent;color:var(--color-slate-700);font-size:.825rem;font-weight:600;cursor:pointer;text-align:left;transition:all .15s ease}.profile-dropdown-item:hover{background-color:var(--color-slate-50);color:var(--color-slate-900)}.profile-dropdown-item.logout-item{color:var(--color-red-600)}.profile-dropdown-item.logout-item:hover{background-color:#fef2f2}.beranda-v2-container{display:flex;flex-direction:column;gap:var(--space-6)}.beranda-greeting-row{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--space-6);flex-wrap:wrap}.beranda-date-label{font-size:.78rem;font-weight:600;color:var(--color-sky-700);text-transform:capitalize;letter-spacing:.02em;display:block;margin-bottom:2px}.beranda-hello-heading{font-family:var(--font-headline);font-size:2.1rem;font-weight:700;color:var(--color-slate-900);letter-spacing:-.02em;line-height:1.15;margin:0 0 6px}.beranda-hello-sub{font-size:.95rem;color:var(--color-slate-600);margin:0}.beranda-quote-box{background:#fff;border:1px solid var(--color-student-card-border);border-left:3px solid var(--color-sky-600);border-radius:var(--radius-md);padding:var(--space-3) var(--space-4);max-width:320px}.beranda-quote-text{font-family:var(--font-headline);font-style:italic;font-size:.825rem;line-height:1.45;color:var(--color-slate-800);margin:0 0 4px}.beranda-quote-author{font-size:.725rem;font-weight:600;color:var(--color-slate-500)}.beranda-hero-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:var(--space-6)}.beranda-current-card{display:flex;gap:var(--space-5);background:#fff;border:1px solid var(--color-student-card-border);border-radius:var(--radius-lg);padding:var(--space-6);box-shadow:0 1px 3px #0f172a0a}.current-card-content{flex:1;min-width:0;display:flex;flex-direction:column;justify-content:space-between}.current-card-label{font-size:.68rem;font-weight:700;color:var(--color-sky-700);text-transform:uppercase;letter-spacing:.08em;display:block;margin-bottom:6px}.current-card-title{font-family:var(--font-headline);font-size:1.3rem;font-weight:700;color:var(--color-slate-900);line-height:1.25;margin:0 0 var(--space-2) 0}.current-card-desc{font-size:.825rem;color:var(--color-slate-600);line-height:1.5;margin:0}.current-progress-section{margin:var(--space-4) 0}.current-progress-bar-wrap{width:100%;height:6px;background-color:var(--color-slate-100);border-radius:var(--radius-full);overflow:hidden}.current-progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--color-sky-500),var(--color-sky-600));border-radius:var(--radius-full)}.current-progress-caption{font-size:.725rem;font-weight:600;color:var(--color-slate-500);margin-top:6px}.current-actions-wrap{display:flex;align-items:center;gap:var(--space-3);flex-wrap:wrap}.btn-beranda-primary{display:inline-flex;align-items:center;gap:var(--space-2);background-color:var(--color-slate-900);color:#fff;border:none;border-radius:var(--radius-md);padding:9px 16px;font-size:.825rem;font-weight:600;cursor:pointer;transition:background-color .15s ease}.btn-beranda-primary:hover{background-color:var(--color-slate-800)}.btn-beranda-secondary{background:transparent;color:var(--color-slate-700);border:1px solid var(--color-slate-200);border-radius:var(--radius-md);padding:9px 14px;font-size:.825rem;font-weight:600;cursor:pointer;transition:all .15s ease}.btn-beranda-secondary:hover{background-color:var(--color-slate-50);border-color:var(--color-slate-300)}.current-card-media{width:175px;flex-shrink:0;border-radius:var(--radius-md);overflow:hidden;background-color:var(--color-slate-100)}.current-hero-img{width:100%;height:100%;object-fit:cover;display:block}.beranda-recommend-card{background:#fff;border:1px solid var(--color-student-card-border);border-radius:var(--radius-lg);padding:var(--space-6);box-shadow:0 1px 3px #0f172a0a;display:flex;flex-direction:column;justify-content:space-between}.recommend-badge{display:inline-flex;align-items:center;gap:6px;font-size:.68rem;font-weight:700;color:var(--color-sky-700);text-transform:uppercase;letter-spacing:.08em;margin-bottom:6px}.recommend-main-title{font-family:var(--font-headline);font-size:1.15rem;font-weight:700;color:var(--color-slate-900);line-height:1.3;margin:0 0 6px}.recommend-main-desc{font-size:.8rem;color:var(--color-slate-600);line-height:1.45;margin:0 0 var(--space-4) 0}.recommend-steps-list{display:flex;flex-direction:column;gap:8px;margin-bottom:var(--space-4)}.recommend-step-item{display:flex;align-items:center;gap:var(--space-3);padding:6px 8px;border-radius:var(--radius-md);cursor:pointer;transition:background-color .15s ease}.recommend-step-item:hover{background-color:var(--color-sky-50)}.step-badge{width:22px;height:22px;border-radius:var(--radius-full);background-color:var(--color-slate-900);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:700;flex-shrink:0}.step-icon{color:var(--color-slate-500);display:flex;align-items:center}.step-info{flex:1;min-width:0}.step-name{font-size:.8rem;font-weight:700;color:var(--color-slate-900);line-height:1.2}.step-detail{font-size:.725rem;color:var(--color-slate-500)}.btn-start-recommendation{width:100%;display:flex;align-items:center;justify-content:center;gap:var(--space-2);background-color:var(--color-slate-900);color:#fff;border:none;border-radius:var(--radius-md);padding:10px;font-size:.85rem;font-weight:600;cursor:pointer;transition:background-color .15s 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ease}.dropzone:hover,.dropzone.active{border-color:var(--color-interactive);background-color:var(--color-interactive-light)}.topic-bar-container{display:flex;flex-direction:column;gap:var(--space-3)}.topic-bar-item{background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-md);padding:var(--space-4)}.topic-progress-track{width:100%;height:6px;background-color:var(--color-bg-subsurface);border-radius:var(--radius-full);overflow:hidden;margin-top:var(--space-2)}.topic-progress-fill{height:100%;border-radius:var(--radius-full);transition:width .3s ease}.fill-danger{background-color:var(--color-danger)}.fill-warning{background-color:var(--color-accent-gold)}.fill-success{background-color:var(--color-success)}.chunk-card{background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-left:3px solid 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