:root{--bg-primary: #f8fafc;--bg-secondary: #f1f5f9;--bg-surface: #ffffff;--bg-card: #ffffff;--bg-card-hover: #ffffff;--bg-glass: rgba(255, 255, 255, .85);--bg-input: #ffffff;--bg-dropdown: #ffffff;--border-color: #e2e8f0;--border-strong: #cbd5e1;--border-width: 1px;--border-subtle: #eef2f6;--border-hover: var(--primary);--shadow-xs: 0 1px 2px rgba(15, 23, 42, .05);--shadow-sm: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .04);--shadow-md: 0 4px 12px -2px rgba(15, 23, 42, .08), 0 2px 4px -2px rgba(15, 23, 42, .05);--shadow-lg: 0 12px 28px -6px rgba(15, 23, 42, .12), 0 4px 8px -4px rgba(15, 23, 42, .06);--shadow-card: var(--shadow-sm);--shadow-card-hover: var(--shadow-md);--shadow-glow: 0 0 0 4px var(--primary-light);--focus-ring: 0 0 0 3px color-mix(in srgb, var(--primary) 28%, transparent);--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #64748b;--text-inverse: #ffffff;--primary: #2563eb;--primary-hover: color-mix(in srgb, var(--primary) 86%, #000);--primary-light: color-mix(in srgb, var(--primary) 10%, transparent);--primary-glow: color-mix(in srgb, var(--primary) 30%, transparent);--accent-cyan: #0891b2;--accent-purple: #7c3aed;--accent-emerald: #059669;--accent-amber: #d97706;--accent-rose: #e11d48;--gradient-primary: linear-gradient(135deg, var(--primary), var(--accent-cyan));--gradient-cyber: linear-gradient(90deg, var(--primary), var(--accent-cyan));--font-display: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", ui-monospace, monospace;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-full: 9999px;--radius-btn: 8px;--transition-fast: .15s ease;--transition-normal: .2s cubic-bezier(.16, 1, .3, 1)}[data-theme=dark]{--bg-primary: #0b0f19;--bg-secondary: #131a2a;--bg-surface: #111827;--bg-card: #111827;--bg-card-hover: #162033;--bg-glass: rgba(11, 15, 25, .85);--bg-input: #0f1624;--bg-dropdown: #111827;--border-color: #1f2a40;--border-strong: #2f3d5a;--border-subtle: #182034;--shadow-xs: 0 1px 2px rgba(0, 0, 0, .4);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .45), 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 6px 16px -2px rgba(0, 0, 0, .5), 0 2px 4px -2px rgba(0, 0, 0, .4);--shadow-lg: 0 16px 32px -6px rgba(0, 0, 0, .6), 0 4px 8px -4px rgba(0, 0, 0, .4);--text-primary: #f1f5f9;--text-secondary: #b6c2d3;--text-muted: #8392a8;--text-inverse: #0b0f19;--accent-cyan: #22d3ee;--accent-purple: #a78bfa;--accent-emerald: #34d399;--accent-amber: #fbbf24;--accent-rose: #fb7185}[data-card-style=outline]{--shadow-card: none;--shadow-card-hover: none;--border-color: #cbd5e1}[data-theme=dark][data-card-style=outline]{--border-color: #2f3d5a}[data-card-style=elevated]{--shadow-card: var(--shadow-md);--shadow-card-hover: var(--shadow-lg)}[data-bg=plain] body{background-image:none}[data-bg=gradient] body{background-image:radial-gradient(900px circle at 0% 0%,color-mix(in srgb,var(--primary) 9%,transparent),transparent 60%),radial-gradient(900px circle at 100% 100%,color-mix(in srgb,var(--accent-cyan) 9%,transparent),transparent 60%)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{min-height:100vh;background-color:var(--bg-primary);background-image:linear-gradient(to right,color-mix(in srgb,var(--text-primary) 4%,transparent) 1px,transparent 1px),linear-gradient(to bottom,color-mix(in srgb,var(--text-primary) 4%,transparent) 1px,transparent 1px);background-size:32px 32px;background-attachment:fixed;color:var(--text-primary);line-height:1.6;font-feature-settings:"cv11","ss01"}::selection{background:var(--primary-glow)}:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.app-container{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1;max-width:1200px;margin:0 auto;padding:2.5rem 1.5rem 5rem;width:100%}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);color:var(--text-primary);font-weight:650;line-height:1.25;letter-spacing:-.02em}h1{font-size:2.25rem}h2{font-size:1.75rem}h3{font-size:1.3rem}h4{font-size:1.1rem}p{color:var(--text-secondary)}a{color:var(--primary);text-decoration:none;font-weight:500;transition:color var(--transition-fast)}a:hover{color:var(--primary-hover)}code{font-family:var(--font-mono);font-size:.875em;background:var(--bg-secondary);border:1px solid var(--border-color);padding:.1em .4em;border-radius:var(--radius-sm)}.glass-card{background:var(--bg-card);border:var(--border-width) solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-card);transition:box-shadow var(--transition-normal),border-color var(--transition-normal),transform var(--transition-normal);position:relative;overflow:hidden}.glass-card:hover{box-shadow:var(--shadow-card-hover)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.55rem 1.1rem;font-size:.875rem;font-family:var(--font-sans);font-weight:600;line-height:1.25;border-radius:var(--radius-btn);border:1px solid transparent;cursor:pointer;box-shadow:var(--shadow-xs);transition:background-color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast),color var(--transition-fast),transform var(--transition-fast);text-decoration:none;white-space:nowrap;-webkit-user-select:none;user-select:none}.btn:focus-visible{outline:none;box-shadow:var(--focus-ring)}.btn:active:not(:disabled){transform:translateY(1px);box-shadow:none}.btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}.btn-primary{background:var(--primary);color:#fff;border-color:color-mix(in srgb,var(--primary) 82%,#000)}.btn-primary:hover:not(:disabled){background:var(--primary-hover);box-shadow:var(--shadow-md);color:#fff}.btn-secondary{background:var(--bg-surface);color:var(--text-primary);border-color:var(--border-strong)}.btn-secondary:hover:not(:disabled){background:var(--bg-secondary);border-color:var(--text-muted)}.btn-ghost{background:transparent;color:var(--text-secondary);box-shadow:none}.btn-ghost:hover:not(:disabled){background:var(--bg-secondary);color:var(--text-primary)}.btn-danger{background:color-mix(in srgb,var(--accent-rose) 10%,var(--bg-surface));color:var(--accent-rose);border-color:color-mix(in srgb,var(--accent-rose) 35%,transparent)}.btn-danger:hover:not(:disabled){background:var(--accent-rose);color:#fff;border-color:var(--accent-rose)}.btn-sm{padding:.4rem .8rem;font-size:.8125rem;gap:.4rem}.btn-lg{padding:.75rem 1.5rem;font-size:.95rem}.btn-icon{padding:0;width:38px;height:38px;border-radius:var(--radius-btn)}.badge{display:inline-flex;align-items:center;gap:.35rem;padding:.2rem .6rem;border-radius:var(--radius-full);font-family:var(--font-sans);font-size:.75rem;font-weight:600;letter-spacing:.01em;border:1px solid var(--border-color);background:var(--bg-secondary);color:var(--text-secondary)}.badge-draft{background:color-mix(in srgb,var(--accent-amber) 14%,var(--bg-surface));border-color:color-mix(in srgb,var(--accent-amber) 40%,transparent);color:var(--accent-amber)}.badge-published{background:color-mix(in srgb,var(--accent-emerald) 14%,var(--bg-surface));border-color:color-mix(in srgb,var(--accent-emerald) 40%,transparent);color:var(--accent-emerald)}.input-group{display:flex;flex-direction:column;gap:.4rem;margin-bottom:1.25rem}.input-label{font-family:var(--font-sans);font-size:.8125rem;font-weight:600;color:var(--text-primary)}.input-text,.input-select,.input-textarea{width:100%;padding:.6rem .85rem;background:var(--bg-input);border:1px solid var(--border-strong);border-radius:var(--radius-btn);color:var(--text-primary);font-family:var(--font-sans);font-size:.9rem;box-shadow:var(--shadow-xs);transition:border-color var(--transition-fast),box-shadow var(--transition-fast);outline:none}.input-text::placeholder,.input-textarea::placeholder,.search-input::placeholder{color:var(--text-muted)}.input-text:focus,.input-select:focus,.input-textarea:focus{border-color:var(--primary);box-shadow:var(--focus-ring)}.input-textarea{min-height:120px;resize:vertical}.navbar{position:sticky;top:0;z-index:50;background:var(--bg-glass);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--border-color);padding:.7rem 1.5rem}.navbar-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:1.5rem}.brand-logo{display:flex;align-items:center;gap:.75rem;font-family:var(--font-display);font-size:1.05rem;font-weight:700;color:var(--text-primary);text-decoration:none}.brand-logo:hover{color:var(--text-primary)}.brand-icon{width:38px;height:38px;border-radius:10px;background:var(--primary);box-shadow:var(--shadow-sm),inset 0 1px #ffffff40;display:flex;align-items:center;justify-content:center;color:#fff}.nav-actions{display:flex;align-items:center;gap:.5rem}.hero-section{position:relative;padding:3rem 2.5rem;margin-bottom:2rem;border-radius:var(--radius-lg);background:var(--bg-card);border:1px solid var(--border-color);box-shadow:var(--shadow-card);overflow:hidden}.hero-section:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-cyber)}.hero-eyebrow{display:inline-flex;align-items:center;gap:.45rem;padding:.3rem .8rem;border-radius:var(--radius-full);background:var(--primary-light);border:1px solid color-mix(in srgb,var(--primary) 25%,transparent);color:var(--primary);font-size:.78rem;font-weight:600;letter-spacing:.02em;margin-bottom:1.25rem}.hero-title{font-family:var(--font-display);font-size:clamp(2rem,4.2vw,3rem);font-weight:750;letter-spacing:-.035em;margin-bottom:.75rem;color:var(--text-primary)}.hero-subtitle{font-size:1.075rem;color:var(--text-secondary);max-width:720px;margin-bottom:2.25rem}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:1rem}.stat-box{padding:1.1rem 1.25rem;border-radius:var(--radius-md);background:var(--bg-secondary);border:1px solid var(--border-color);transition:border-color var(--transition-fast),background-color var(--transition-fast)}.stat-box:hover{border-color:var(--border-strong);background:var(--bg-surface)}.stat-number{font-size:2rem;font-weight:700;color:var(--text-primary);font-variant-numeric:tabular-nums;letter-spacing:-.03em;line-height:1.2}.stat-label{font-family:var(--font-sans);font-size:.78rem;color:var(--text-muted);font-weight:600;letter-spacing:.02em}.filters-bar{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:space-between;margin-bottom:2rem;padding:.75rem 1rem;border-radius:var(--radius-md);background:var(--bg-card);border:1px solid var(--border-color);box-shadow:var(--shadow-xs)}.course-tabs{display:flex;flex-wrap:wrap;gap:.4rem}.course-pill{display:flex;align-items:center;gap:.45rem;padding:.4rem .85rem;border-radius:var(--radius-btn);font-family:var(--font-sans);font-size:.8125rem;font-weight:600;cursor:pointer;border:1px solid var(--border-color);background:transparent;color:var(--text-secondary);transition:all var(--transition-fast)}.course-pill:hover{background:var(--bg-secondary);color:var(--text-primary);border-color:var(--border-strong)}.course-pill.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:var(--shadow-sm)}.search-box{display:flex;align-items:center;gap:.6rem;background:var(--bg-input);border:1px solid var(--border-strong);border-radius:var(--radius-btn);padding:.45rem .85rem;min-width:280px;box-shadow:var(--shadow-xs);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.search-box:focus-within{border-color:var(--primary);box-shadow:var(--focus-ring)}.search-input{background:transparent;border:none;color:var(--text-primary);outline:none;width:100%;font-family:var(--font-sans);font-size:.875rem}.weeks-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:1.5rem}.week-card{display:flex;flex-direction:column;height:100%;cursor:pointer;border:1px solid var(--border-color);background:var(--bg-card);border-radius:var(--radius-md);box-shadow:var(--shadow-card)}.week-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--border-strong)}.week-card-image{height:195px;width:100%;object-fit:cover;border-top-left-radius:calc(var(--radius-md) - 1px);border-top-right-radius:calc(var(--radius-md) - 1px);border-bottom:1px solid var(--border-color);background:var(--bg-secondary)}.week-card-body{padding:1.35rem;display:flex;flex-direction:column;flex:1}.week-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:.85rem}.week-card-title{font-size:1.15rem;margin-bottom:.5rem;color:var(--text-primary);line-height:1.35}.week-card-summary{font-size:.9rem;color:var(--text-secondary);line-height:1.55;margin-bottom:1.15rem;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.week-card-footer{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:.9rem;border-top:1px solid var(--border-subtle);font-size:.8125rem;color:var(--text-muted);font-weight:500}.tags-list{display:flex;flex-wrap:wrap;gap:.35rem;margin-bottom:1rem}.tag-badge{font-family:var(--font-mono);font-size:.72rem;padding:.15rem .5rem;border-radius:var(--radius-sm);background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-secondary);font-weight:500}.week-detail-header{margin-bottom:2rem;padding:2.25rem;border-radius:var(--radius-lg);background:var(--bg-card);border:1px solid var(--border-color);box-shadow:var(--shadow-card)}.week-hero-img{width:100%;max-height:440px;object-fit:cover;border-radius:var(--radius-md);margin-bottom:2rem;border:1px solid var(--border-color);box-shadow:var(--shadow-md)}.week-meta-bar{display:flex;flex-wrap:wrap;align-items:center;gap:1.5rem;margin:1.5rem 0 .5rem;color:var(--text-secondary);font-size:.9rem;font-weight:500}.meta-item{display:flex;align-items:center;gap:.45rem}.sections-flow{display:flex;flex-direction:column;gap:1.75rem}.section-block{padding:1.75rem;border-radius:var(--radius-md);background:var(--bg-card);border:1px solid var(--border-color);box-shadow:var(--shadow-card)}.section-title{font-family:var(--font-display);font-size:1.25rem;margin-bottom:1.25rem;display:flex;align-items:center;gap:.65rem;color:var(--text-primary);padding-bottom:.75rem;border-bottom:1px solid var(--border-color)}.markdown-body{color:var(--text-secondary);line-height:1.75;font-size:1rem}.markdown-body h1,.markdown-body h2,.markdown-body h3{font-family:var(--font-display);margin-top:1.75rem;margin-bottom:.75rem;color:var(--text-primary)}.markdown-body p{margin-bottom:1.1rem}.markdown-body ul,.markdown-body ol{margin-left:1.5rem;margin-bottom:1.1rem}.markdown-body li{margin-bottom:.35rem}.markdown-body strong{color:var(--text-primary);font-weight:600}.markdown-body blockquote{border-left:3px solid var(--primary);padding:.75rem 1.15rem;background:var(--bg-secondary);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-primary);margin:1.25rem 0}.code-block-container{border-radius:var(--radius-md);background:#0b1020;border:1px solid #1f2a44;box-shadow:var(--shadow-sm);overflow:hidden;margin:1.25rem 0}.code-header{display:flex;align-items:center;justify-content:space-between;padding:.65rem 1.1rem;background:#111829;border-bottom:1px solid #1f2a44;font-family:var(--font-mono);font-size:.8rem;color:#94a3b8;font-weight:500}.code-content{padding:1.25rem;overflow-x:auto;font-family:var(--font-mono);font-size:.875rem;color:#e2e8f0;line-height:1.65}.callout-box{padding:1.15rem 1.4rem;border-radius:var(--radius-md);margin:1.5rem 0;display:flex;gap:1rem;border:1px solid var(--border-color);border-left-width:4px}.callout-info{background:#eff6ff;color:#1d4ed8;border-color:#bfdbfe}.callout-tip{background:#f5f3ff;color:#6d28d9;border-color:#ddd6fe}.callout-warning{background:#fffbeb;color:#b45309;border-color:#fde68a}.callout-success{background:#ecfdf5;color:#047857;border-color:#a7f3d0}[data-theme=dark] .callout-info{background:#3b82f61f;color:#93c5fd;border-color:#3b82f659}[data-theme=dark] .callout-tip{background:#8b5cf61f;color:#c4b5fd;border-color:#8b5cf659}[data-theme=dark] .callout-warning{background:#f59e0b1f;color:#fcd34d;border-color:#f59e0b59}[data-theme=dark] .callout-success{background:#10b9811f;color:#6ee7b7;border-color:#10b98159}.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.25rem;margin:1.25rem 0}.gallery-item{position:relative;border-radius:var(--radius-md);overflow:hidden;cursor:pointer;background:var(--bg-secondary);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);aspect-ratio:16 / 10;transition:transform var(--transition-normal),box-shadow var(--transition-normal)}.gallery-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.gallery-img{width:100%;height:100%;object-fit:cover}.gallery-caption{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(to top,rgba(0,0,0,.85) 0%,transparent 100%);padding:.85rem;font-size:.85rem;color:#fff;font-weight:500}.task-list{display:flex;flex-direction:column;gap:.5rem}.task-item{display:flex;align-items:center;gap:.8rem;padding:.7rem .95rem;background:var(--bg-secondary);border-radius:var(--radius-btn);border:1px solid var(--border-color);font-size:.925rem;font-weight:500}.task-checkbox{width:18px;height:18px;accent-color:var(--primary);cursor:pointer}.task-item.completed{opacity:.65;text-decoration:line-through;color:var(--text-muted)}.resources-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem}.resource-card{display:flex;align-items:center;gap:1rem;padding:1rem 1.2rem;border-radius:var(--radius-md);background:var(--bg-secondary);border:1px solid var(--border-color);transition:all var(--transition-fast)}.resource-card:hover{background:var(--bg-surface);border-color:var(--primary);box-shadow:var(--shadow-md);color:var(--primary)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a8c;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;display:flex;align-items:center;justify-content:center;padding:1.5rem;animation:fadeIn .2s ease-out}.modal-content{background:var(--bg-surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);max-width:680px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:0 24px 60px -12px #0f172a59;padding:2rem;position:relative;animation:scaleIn .25s cubic-bezier(.16,1,.3,1)}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:1px solid var(--border-color)}.modal-close-btn{background:transparent;border:1px solid transparent;color:var(--text-muted);cursor:pointer;padding:.4rem;border-radius:var(--radius-btn);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.modal-close-btn:hover{background:var(--bg-secondary);color:var(--text-primary)}.lightbox-modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#070913f0;z-index:150;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem}.lightbox-image{max-width:90vw;max-height:80vh;object-fit:contain;border-radius:var(--radius-md);box-shadow:0 0 40px #000c}.lightbox-caption{margin-top:1.25rem;color:#fff;font-family:var(--font-display);font-size:1.05rem;text-align:center;font-weight:600}.toast-container{position:fixed;bottom:1.5rem;right:1.5rem;z-index:200;display:flex;flex-direction:column;gap:.65rem}.toast{display:flex;align-items:center;gap:.75rem;padding:.85rem 1.25rem;border-radius:var(--radius-md);background:var(--bg-surface);border:1px solid var(--border-color);box-shadow:var(--shadow-lg);color:var(--text-primary);font-weight:500;font-size:.9rem;animation:slideUp .25s ease-out}.toast-success{border-left:4px solid var(--accent-emerald)}.toast-error{border-left:4px solid var(--accent-rose)}.toast-info{border-left:4px solid var(--accent-cyan)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes scaleIn{0%{opacity:0;transform:scale(.97) translateY(8px)}to{opacity:1;transform:scale(1) translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.spinner{width:26px;height:26px;border:3px solid var(--border-color);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}@media(max-width:768px){.main-content{padding:1.25rem 1rem 4rem}.hero-section{padding:2rem 1.25rem}.weeks-grid{grid-template-columns:1fr}.filters-bar{flex-direction:column;align-items:stretch}.search-box{width:100%;min-width:0}.navbar-inner{flex-wrap:wrap}}