@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap";
:root{--bp-mobile:480px;--bp-tablet:768px;--bp-laptop:1024px;--bp-desktop:1280px;--text-display:clamp(1.75rem, 4vw, 3rem);--text-heading:clamp(1.25rem, 2.5vw, 2rem);--text-body:clamp(.875rem, 1.5vw, 1rem);--space-section:clamp(2rem, 5vw, 5rem);--space-card:clamp(1rem, 2vw, 1.5rem);--bg-canvas:#f8f9fa;--bg-surface:#fff;--bg-surface-hover:#f1f3f5;--bg-element:#e9ecef;--border-muted:#e2e8f0;--border-subtle:#cbd5e1;--border-active:#0056d2;--text-title:#1e293b;--text-main:#334155;--text-muted:#64748b;--text-subtle:#94a3b8;--brand:#0056d2;--brand-hover:#00419e;--brand-muted:#0056d214;--brand-border:#0056d226;--color-success:#198754;--bg-success:#19875414;--border-success:#19875433;--color-warning:#f59e0b;--bg-warning:#f59e0b14;--border-warning:#f59e0b33;--color-danger:#dc3545;--bg-danger:#dc354514;--border-danger:#dc354533;--radius-sm:4px;--radius-md:6px;--radius-lg:8px;--transition-fast:.15s cubic-bezier(.4, 0, .2, 1);--shadow-sm:0 1px 3px #0000000d, 0 1px 2px #00000008;--shadow-md:0 4px 6px -1px #0000000d, 0 2px 4px -1px #00000008;--shadow-lg:0 10px 15px -3px #0000000a, 0 4px 6px -2px #00000005}:root.dark{--bg-canvas:#0f172a;--bg-surface:#1e293b;--bg-surface-hover:#263449;--bg-element:#334155;--border-muted:#334155;--border-subtle:#475569;--border-active:#3b82f6;--text-title:#f1f5f9;--text-main:#cbd5e1;--text-muted:#94a3b8;--text-subtle:#64748b;--brand:#3b82f6;--brand-hover:#60a5fa;--brand-muted:#3b82f626;--brand-border:#3b82f640;--color-success:#22c55e;--bg-success:#22c55e1f;--border-success:#22c55e40;--color-warning:#fbbf24;--bg-warning:#fbbf241f;--border-warning:#fbbf2440;--color-danger:#f87171;--bg-danger:#f871711f;--border-danger:#f8717140;--shadow-sm:0 1px 3px #0000004d, 0 1px 2px #0003;--shadow-md:0 4px 6px -1px #0000004d, 0 2px 4px -1px #0003;--shadow-lg:0 10px 15px -3px #00000059, 0 4px 6px -2px #0003}:root.dark body{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box;outline:none;margin:0;padding:0}body{background-color:var(--bg-canvas);color:var(--text-main);font-family:Inter,-apple-system,sans-serif;line-height:1.5;font-size:var(--text-body);-webkit-font-smoothing:antialiased}code,pre,.mono{font-family:JetBrains Mono,monospace;font-size:13px}img,video{max-width:100%;height:auto}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--brand);outline-offset:2px}.page-container{flex-direction:column;min-height:100vh;padding-top:56px;display:flex}.container{width:100%;max-width:1120px;margin:0 auto;padding:0 16px}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;gap:16px;display:grid}.navbar{z-index:100;background-color:var(--bg-surface);border-bottom:1px solid var(--border-muted);justify-content:space-between;align-items:center;height:64px;padding:0 32px;display:flex;position:fixed;top:0;left:0;right:0;box-shadow:0 2px 4px #00000005}.navbar-brand{color:var(--text-title);letter-spacing:-.02em;align-items:center;font-size:18px;font-weight:700;text-decoration:none;display:flex}.navbar-links{align-items:center;gap:28px;margin-left:32px;margin-right:auto;display:flex}.navbar-links a{color:var(--text-main);transition:var(--transition-fast);font-size:14px;font-weight:500;text-decoration:none}.navbar-links a:hover,.navbar-links a.active{color:var(--brand)}.navbar-actions{align-items:center;gap:16px;display:flex}.navbar-hamburger-btn{display:none}.btn{border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition-fast);border:1px solid #0000;justify-content:center;align-items:center;gap:6px;padding:10px 18px;font-family:inherit;font-size:14px;font-weight:600;text-decoration:none;display:inline-flex}.btn-primary{background-color:var(--brand);color:#fff}.btn-primary:hover{background-color:var(--brand-hover)}.btn-primary:disabled{background-color:var(--bg-element);color:var(--text-subtle);cursor:not-allowed}.btn-secondary{color:var(--brand);border-color:var(--brand);background-color:#0000}.btn-secondary:hover{background-color:var(--brand-muted);color:var(--brand-hover)}.btn-secondary:disabled{opacity:.5;cursor:not-allowed}.btn-success{background-color:var(--color-success);color:#fff}.btn-success:hover{background-color:#146c43}.btn-danger{background-color:var(--color-danger);color:#fff}.btn-danger:hover{background-color:#b02a37}.btn-sm{padding:6px 12px;font-size:13px}.btn-lg{padding:12px 24px;font-size:15px}.card{background-color:var(--bg-surface);border:1px solid var(--border-muted);border-radius:var(--radius-md);padding:var(--space-card);box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s}.card:hover{box-shadow:var(--shadow-md);border-color:var(--border-subtle);transform:translateY(-2px)}.hero{text-align:left;background-color:var(--bg-surface);border-bottom:1px solid var(--border-muted);align-items:center;padding:48px 0;display:flex}.hero .container{grid-template-columns:1fr;align-items:center;gap:24px;display:grid}.hero-content{max-width:640px}.hero-badge{background-color:var(--brand-muted);border-radius:var(--radius-sm);color:var(--brand);text-transform:uppercase;margin-bottom:16px;padding:4px 8px;font-family:JetBrains Mono,monospace;font-size:11px;font-weight:700;display:inline-block}.hero h1{font-size:var(--text-display);letter-spacing:-.02em;color:var(--text-title);margin-bottom:20px;font-weight:700;line-height:1.15}.hero h1 span{color:var(--brand)}.hero p{font-size:var(--text-body);color:var(--text-main);margin-bottom:32px;line-height:1.6}.hero-stats{border-top:1px solid var(--border-muted);gap:40px;margin-top:40px;padding-top:24px;display:flex}.hero-stat-value{color:var(--text-title);font-size:22px;font-weight:700}.hero-stat-label{color:var(--text-muted);margin-top:2px;font-size:12px}.course-card{border-radius:var(--radius-md);border:1px solid var(--border-muted);cursor:pointer;width:100%;max-width:360px;min-height:380px;transition:var(--transition-fast);flex-direction:column;padding:0;text-decoration:none;display:flex;overflow:hidden}.course-card:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:0 4px 20px #00255c1f}.course-card-thumb{aspect-ratio:16/9;color:#fff;width:100%;transition:var(--transition-fast);background-color:#00255c;flex-shrink:0;justify-content:center;align-items:center;font-family:JetBrains Mono,monospace;font-size:28px;font-weight:700;display:flex}.course-card:hover .course-card-thumb{opacity:.9}.course-card-body{background-color:var(--bg-surface);flex-direction:column;flex:1;padding:20px;display:flex;overflow:hidden}.course-card-body h3{color:var(--text-title);margin-bottom:6px;font-size:16px;font-weight:700;line-height:1.35}.course-card-desc{color:var(--text-muted);-webkit-line-clamp:5;-webkit-box-orient:vertical;margin-bottom:16px;font-size:13px;line-height:1.5;display:-webkit-box;overflow:hidden}.course-card-meta{border-top:1px solid var(--border-muted);justify-content:space-between;align-items:center;margin-top:auto;padding-top:14px;display:flex}.course-card-chapters{color:var(--text-muted);font-size:12px;font-weight:500}.section{padding:56px 0}.section-header{margin-bottom:36px}.section-header h2{color:var(--text-title);letter-spacing:-.01em;margin-bottom:8px;font-size:26px;font-weight:700}.section-header p{color:var(--text-muted);font-size:15px}.stat-card{border-radius:var(--radius-md);background-color:var(--bg-surface);flex-direction:column;justify-content:space-between;padding:20px;display:flex}.stat-icon{color:var(--brand);margin-bottom:12px;font-size:20px}.stat-value{color:var(--text-title);margin-bottom:4px;font-size:24px;font-weight:700}.stat-label{color:var(--text-muted);font-size:12px}.layout-with-sidebar{background-color:var(--bg-canvas);flex-direction:column;min-height:calc(100vh - 64px);display:flex}.sidebar{background-color:var(--bg-surface);border-right:1px solid var(--border-muted);width:300px;max-width:85vw;box-shadow:var(--shadow-lg);z-index:10001;flex-direction:column;padding:20px;transition:transform .3s 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var(--text-subtle);padding-left:12px}.mic-controls{flex-direction:column;align-items:center;gap:12px;display:flex}.mic-btn{border:1px solid var(--border-subtle);background-color:var(--bg-surface);width:60px;height:60px;color:var(--text-title);cursor:pointer;transition:var(--transition-fast);box-shadow:var(--shadow-sm);border-radius:50%;place-items:center;font-size:20px;display:grid}.mic-btn:hover{background-color:var(--bg-surface-hover);border-color:var(--border-active);transform:scale(1.05)}.mic-btn.recording{background-color:var(--color-danger);border-color:var(--color-danger);color:#fff;animation:2s infinite pulsePulse}@keyframes pulsePulse{0%{box-shadow:0 0 #dc354533}70%{box-shadow:0 0 0 10px #dc354500}to{box-shadow:0 0 #dc354500}}.score-grid{grid-template-columns:repeat(3,1fr);gap:20px;margin:28px 0;display:grid}.score-card{text-align:center;padding:24px}.score-number{color:var(--brand);margin-bottom:6px;font-family:JetBrains Mono,monospace;font-size:32px;font-weight:700}.score-label{color:var(--text-muted);font-size:13px;font-weight:500}.form-group{margin-bottom:20px}.form-label{color:var(--text-title);margin-bottom:8px;font-size:13px;font-weight:600;display:block}.form-input{border-radius:var(--radius-sm);border:1px solid var(--border-subtle);background-color:var(--bg-surface);width:100%;color:var(--text-title);transition:var(--transition-fast);padding:10px 14px;font-family:inherit;font-size:14px}.form-input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-muted)}.form-textarea{resize:vertical;min-height:120px}.table-container{border-radius:var(--radius-md);border:1px solid var(--border-muted);background-color:var(--bg-surface);box-shadow:var(--shadow-sm);overflow-x:auto}table{border-collapse:collapse;white-space:nowrap;width:100%;font-size:13.5px}th{text-align:left;text-transform:uppercase;color:var(--text-muted);border-bottom:2px solid var(--border-muted);background-color:var(--bg-canvas);padding:12px 18px;font-family:JetBrains Mono,monospace;font-size:11px;font-weight:700}td{border-bottom:1px solid var(--border-muted);color:var(--text-main);padding:14px 18px}tr:last-child td{border-bottom:none}tr:hover td{background-color:var(--bg-surface-hover)}.badge{border-radius:var(--radius-sm);border:1px solid #0000;align-items:center;padding:3px 8px;font-family:JetBrains Mono,monospace;font-size:11px;font-weight:700;display:inline-flex}.badge-success{background-color:var(--bg-success);color:var(--color-success);border-color:var(--border-success)}.badge-danger{background-color:var(--bg-danger);color:var(--color-danger);border-color:var(--border-danger)}.badge-warning{background-color:var(--bg-warning);color:var(--color-warning);border-color:var(--border-warning)}.badge-accent{background-color:var(--brand-muted);color:var(--brand);border-color:var(--brand-border)}.tabs{border-bottom:1px solid var(--border-muted);gap:24px;margin-bottom:28px;display:flex}.tab{cursor:pointer;color:var(--text-muted);transition:var(--transition-fast);border-bottom:3px solid #0000;padding:12px 6px;font-size:14px;font-weight:600}.tab:hover{color:var(--brand)}.tab.active{color:var(--brand);border-bottom-color:var(--brand)}.hero-buttons{flex-direction:column;gap:12px;width:100%;display:flex}.hero-illustration{justify-content:center;align-items:center;width:100%;max-width:320px;margin:0 auto;display:flex}.hero-illustration svg{width:100%;height:auto}.footer-container{text-align:center;flex-direction:column;align-items:center;gap:16px;width:100%;display:flex}.certificate{background-color:var(--bg-surface);border:8px double var(--border-subtle);border-radius:var(--radius-md);text-align:center;box-shadow:var(--shadow-md);padding:clamp(1.5rem,5vw,3rem);position:relative}.certificate h2{font-size:var(--text-heading);color:var(--text-title);margin-bottom:8px;font-weight:700}.certificate .cert-subtitle{color:var(--text-muted);text-transform:uppercase;margin-bottom:32px;font-family:JetBrains Mono,monospace;font-size:11px;font-weight:600}.certificate .cert-name{color:var(--brand);margin-bottom:12px;font-size:clamp(1.5rem,5vw,2.5rem);font-weight:700}.certificate .cert-course{color:var(--text-main);margin-bottom:32px;font-size:16px}@media (min-width:480px){.grid-4{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}}@media (min-width:768px){.container{padding:0 32px}.grid-2{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}.grid-3{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}.grid-4{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:24px}.hero{padding:80px 0 60px}.hero .container{grid-template-columns:1.2fr .8fr;gap:40px}.hero-buttons{flex-direction:row;width:auto}.footer-container{text-align:left;flex-direction:row;justify-content:space-between}.layout-with-sidebar{grid-template-columns:260px 1fr;display:grid}.sidebar{border-right:1px solid var(--border-muted)!important;width:auto!important;height:calc(100vh - 64px)!important;box-shadow:none!important;z-index:1!important;border-bottom:none!important;max-width:none!important;padding:24px 12px!important;display:block!important;position:sticky!important;top:64px!important;overflow-y:auto!important;transform:none!important}.syllabus-toggle-btn,.classroom-mobile-bar{display:none!important}.content-area{padding:40px 48px}}@media (min-width:1024px){.layout-with-sidebar{grid-template-columns:280px 1fr}.content-area{padding:40px 56px}.grid-4{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.container:has(.tabs){grid-template-columns:240px 1fr;align-items:start;gap:32px;max-width:100%;display:grid}.container:has(.tabs)>div:first-child{grid-column:1/span 2}.container:has(.tabs) .tabs{border-bottom:none;border-right:1px solid var(--border-muted);flex-direction:column;grid-column:1;gap:8px;height:calc(100vh - 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0;font-size:11px;font-weight:500;display:flex;border-bottom:none!important}.tab.active{color:var(--brand);font-weight:600}.container:has(.tabs){padding-bottom:80px!important}}.flex-between{justify-content:space-between;align-items:center;display:flex}@keyframes spin{to{transform:rotate(360deg)}}.meet-layout{flex-direction:column;gap:24px;max-width:1200px;height:calc(100vh - 120px);margin:0 auto;display:flex}.meet-grid{flex:1;grid-template-columns:1fr 1fr;gap:20px;min-height:380px;display:grid}@media (max-width:768px){.meet-grid{grid-template-rows:1fr 1fr;grid-template-columns:1fr}}.meet-panel{border-radius:var(--radius-lg);box-shadow:var(--shadow-md);transition:border-color var(--transition-fast);background-color:#202124;border:2px solid #0000;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.meet-panel.speaking{border-color:#8ab4f8}.meet-panel.speaking:after{content:"";background-color:#8ab4f8;border-radius:50%;width:12px;height:12px;animation:1.5s infinite pulsePulse;position:absolute;top:12px;right:12px;box-shadow:0 0 8px #8ab4f8}.meet-avatar{background-color:var(--brand);color:#fff;width:96px;height:96px;box-shadow:var(--shadow-lg);border-radius:50%;place-items:center;font-size:32px;font-weight:600;display:grid}.meet-panel-student .meet-avatar{background-color:var(--color-success)}.meet-nametag{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);color:#fff;border-radius:var(--radius-sm);background-color:#20212499;align-items:center;gap:8px;padding:6px 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