:root{--primary-sky: #0ea5e9;--secondary-sky: #38bdf8;--deep-blue: #0369a1;--very-light-blue: #f0f9ff;--soft-section-bg: #f8fcff;--card-bg: #ffffff;--text-main: #0f172a;--text-secondary: #475569;--text-muted: #64748b;--border-color: #e0f2fe;--border-hover: #bae6fd;--dark-navy-accent: #0f2a43;--success: #10b981;--warning: #f59e0b;--danger: #ef4444;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", monospace;--shadow-xs: 0 1px 2px rgba(15, 23, 42, .04);--shadow-sm: 0 2px 8px rgba(14, 165, 233, .08);--shadow-md: 0 6px 18px rgba(14, 165, 233, .1);--shadow-lg: 0 12px 28px rgba(14, 165, 233, .12);--shadow-card-hover: 0 14px 30px -4px rgba(14, 165, 233, .16);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 20px;--radius-full: 9999px;--transition-fast: .15s ease;--transition-normal: .25s ease}.circuit-pattern-bg{background-color:#fff;background-image:radial-gradient(#e0f2fe 1px,transparent 1px),radial-gradient(#e0f2fe 1px,#fff 1px);background-size:24px 24px;background-position:0 0,12px 12px}.hero-banner-bg{background:radial-gradient(100% 100% at 50% 0%,#f0f9ff,#fff)}.soft-section-bg{background-color:var(--soft-section-bg)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}style,script,noscript,template{display:none!important}html{font-family:var(--font-sans);color:var(--text-main);background-color:#fff;scroll-behavior:smooth;-webkit-font-smoothing:antialiased;max-width:100%;overflow-x:hidden}section[id],div[id]{scroll-margin-top:65px}body{min-height:100vh;display:flex;flex-direction:column;background-color:#fff;max-width:100%;overflow-x:hidden;position:relative}#root{min-height:100vh;display:flex;flex-direction:column;max-width:100%;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer;border:none;background:none;touch-action:manipulation}input,textarea,select{font-family:inherit;font-size:.95rem}.container{width:100%;max-width:1220px;margin-left:auto;margin-right:auto;padding-left:clamp(1rem,3.5vw,1.5rem);padding-right:clamp(1rem,3.5vw,1.5rem)}.container-narrow{width:100%;max-width:860px;margin-left:auto;margin-right:auto;padding-left:clamp(1rem,3.5vw,1.5rem);padding-right:clamp(1rem,3.5vw,1.5rem)}.heading-hero{font-size:clamp(2.35rem,4.5vw,3.5rem);font-weight:800;line-height:1.15;letter-spacing:-.025em;color:var(--text-main)}.heading-section{font-size:clamp(1.75rem,3vw,2.25rem);font-weight:800;line-height:1.25;letter-spacing:-.015em;color:var(--text-main)}.heading-card{font-size:1.2rem;font-weight:700;line-height:1.35;color:var(--text-main)}.text-sky{color:var(--primary-sky)}.text-deep-blue{color:var(--deep-blue)}.text-subtle{color:var(--text-secondary)}.grid-cards{display:grid;grid-template-columns:1fr;gap:1.75rem;align-items:stretch}.grid-cards>.scroll-reveal{display:flex;flex-direction:column;height:100%}.grid-cards>.scroll-reveal>*{flex:1;display:flex;flex-direction:column;height:100%}@media(min-width:640px){.grid-cards{grid-template-columns:repeat(2,1fr)}}@media(min-width:1024px){.grid-cards{grid-template-columns:repeat(3,1fr)}}.grid-cards-4{display:grid;grid-template-columns:1fr;gap:1.5rem;align-items:stretch}.grid-cards-4>.scroll-reveal{display:flex;flex-direction:column;height:100%}.grid-cards-4>.scroll-reveal>*{flex:1;display:flex;flex-direction:column;height:100%}.subject-card:hover{transform:translateY(-4px);box-shadow:0 12px 28px #0ea5e924!important;border-color:#38bdf8!important}.subject-card:hover .subject-img{transform:scale(1.05)}.subject-card:hover .subject-explore-btn{background-color:#0ea5e9;color:#fff;border-color:#0ea5e9}.subject-yt-btn:hover{background-color:#dc2626!important;transform:scale(1.03)}.quiz-card:hover{transform:translateY(-4px);box-shadow:0 12px 28px #0ea5e924!important;border-color:#38bdf8!important}.start-quiz-btn:hover{background-color:#0284c7;transform:translate(2px)}.classes-vertical-stack{display:flex;flex-direction:column;gap:1.25rem;width:100%}.modern-card{background-color:#fff;border-radius:var(--radius-lg);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}.modern-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:var(--secondary-sky)}@keyframes heroReveal{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.hero-animate-title{animation:heroReveal .65s cubic-bezier(.16,1,.3,1) forwards}.whatsapp-float{position:fixed;bottom:24px;right:24px;z-index:999;display:flex;align-items:center;gap:8px;background-color:#25d366;color:#fff;padding:12px 18px;border-radius:9999px;box-shadow:0 8px 20px #25d36659;font-weight:700;font-size:.9rem;transition:transform .2s ease,box-shadow .2s ease;text-decoration:none}.whatsapp-float:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 12px 26px #25d36673}@media(max-width:640px){.whatsapp-float span{display:none}.whatsapp-float{padding:14px;border-radius:50%;bottom:20px;right:20px}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#f8fcff}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}.footer-link{color:#bae6fd;text-decoration:none;transition:all .2s ease;display:inline-block}.footer-link:hover{color:#fff;transform:translate(4px)}.footer-social-btn{width:38px;height:38px;border-radius:8px;background-color:#ffffff1f;border:1px solid rgba(255,255,255,.22);display:flex;align-items:center;justify-content:center;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:all .2s ease;color:#fff}.footer-social-btn:hover{background-color:#fff;transform:translateY(-2px);box-shadow:0 4px 12px #00000040}.footer-social-btn.youtube:hover{color:red}.footer-social-btn.linkedin:hover{color:#0077b5}.footer-social-btn.whatsapp:hover{color:#25d366}.footer-social-btn.mail:hover{color:#0ea5e9}.btn-interactive,.modern-card{transition:transform .25s cubic-bezier(.16,1,.3,1),box-shadow .25s ease,border-color .25s ease}button:active:not(:disabled){transform:scale(.98)}.stats-grid-responsive{width:100%;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}@media(max-width:900px){.stats-grid-responsive{grid-template-columns:repeat(2,1fr);gap:20px}}@media(max-width:480px){.stats-grid-responsive{grid-template-columns:repeat(2,1fr);gap:16px}}.table-responsive-wrapper{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius-lg)}img,video{max-width:100%;height:auto}.hero-bg-video{position:absolute;top:0;right:0;bottom:0;left:0;width:100%!important;height:100%!important;max-width:100%!important;object-fit:contain!important;object-position:center!important;opacity:1!important;filter:brightness(.44)!important;z-index:0!important;pointer-events:none}@media(max-width:768px){.hero-video-section{min-height:560px!important}}@media(max-width:480px){.hero-video-section{min-height:500px!important}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}.hero-bg-video{display:none!important}.scroll-reveal{opacity:1!important;transform:none!important;transition:none!important}.hero-animate-title{animation:none!important;opacity:1!important;transform:none!important}}