:root{--container: 1200px;--gap: 1.25rem;--radius: 14px;--primary-500: #6f42c1;--primary-600: #5b2fa3;--muted: #6b7280;--surface: rgba(255, 255, 255, .85);--glass: rgba(255, 255, 255, .6);--card-shadow: 0 8px 30px rgba(33, 37, 41, .08)}html,body{height:100%}body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial;color:#0f1724;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6}.hero>*,.features>*,.classes-section>*{max-width:var(--container)}.hero{position:relative;min-height:calc(100vh - 92px);display:grid;padding:6rem 1rem;text-align:center;overflow:hidden}.hero:before{content:"";inset:0;background:radial-gradient(1200px 400px at 10% 20%,rgba(111,66,193,.08),transparent 10%),radial-gradient(1000px 360px at 90% 80%,rgba(243,156,18,.04),transparent 10%);pointer-events:none}.hero h1,.hero h2{font-weight:800;font-size:clamp(2rem,4.5vw,3.6rem);line-height:1.02;letter-spacing:-.5px;margin-bottom:1rem;color:var(--primary-600)}.hero p{max-width:780px;margin:0 auto 1.75rem;color:var(--muted);font-size:1.05rem}.cta-group{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:.6rem;padding:.7rem 1.25rem;border-radius:999px}.logo-symbol{font-weight:600;box-shadow:none}.btn-primary{background:linear-gradient(90deg,var(--primary-500),var(--primary-600));color:#fff;transform:translateZ(0);box-shadow:0 10px 30px #6f42c12e}.btn-primary:hover{transform:translateY(-3px);filter:brightness(.98)}.btn-secondary{background:transparent;border:1px solid rgba(15,23,36,.06);color:var(--primary-600)}.classes-section{padding:4rem 1rem}.section-header{text-align:center;margin-bottom:2.25rem}.section-header h2{font-size:1.6rem;margin-bottom:.5rem}.class-grid{column-count:4;column-gap:1.5rem;display:block}.class-card{background:var(--surface);border-radius:12px;padding:1.75rem;min-height:auto;margin-bottom:1.5rem;break-inside:avoid;width:100%;box-shadow:var(--card-shadow);display:flex;flex-direction:column;gap:.8rem;transition:transform .28s cubic-bezier(.2,.9,.3,1),box-shadow .28s;position:relative;overflow:hidden}.class-card:hover{transform:translateY(-8px);box-shadow:0 20px 45px #0f17241f}.card-bg-icon{position:absolute;right:16px;top:12px;font-weight:900;font-size:3rem;color:#0f17240f}.card-content h3{margin:0 0 .25rem;font-size:1.5rem;font-weight:700}.class-card p{font-size:1.05rem;line-height:1.6}.class-badge{background:linear-gradient(90deg,var(--primary-500),var(--primary-600));color:#fff;font-size:.75rem;padding:.25rem .5rem;border-radius:999px}.card-action{margin-top:auto;display:inline-flex;gap:.5rem;align-items:center;color:var(--primary-600);font-weight:600;font-size:1rem}.card-maths-mastery{background:linear-gradient(135deg,#2c3e50,#000);border:1px solid rgba(255,255,255,.1)}.card-maths-mastery h3,.card-maths-mastery p{color:#fff}.card-maths-mastery .card-bg-icon{color:#ffffff1a}.card-maths-mastery .card-action{color:#f1c40f}.features{padding:4rem 1rem}.feature-grid{column-count:3;column-gap:1.5rem;display:block}.feature-card{background:transparent;border-radius:12px;padding:1.25rem;transition:transform .25s,box-shadow .25s;background:linear-gradient(180deg,#ffffffbf,#fff9);box-shadow:var(--card-shadow);margin-bottom:1.5rem;break-inside:avoid;width:100%}.feature-card:hover{transform:translateY(-6px)}.f-icon{font-size:1.6rem;color:var(--primary-600);margin-bottom:.6rem}@media(max-width:1100px){.class-grid{column-count:3}.feature-grid{column-count:2}}@media(max-width:768px){.class-grid{column-count:2}.hero{padding:4rem 1rem}.class-card{text-align:center;align-items:center}.section-header,.classes-section h1,.classes-section h2,.hero h1,.section-title{text-align:center;justify-content:center}.hero-content{text-align:center;margin-left:auto;margin-right:auto}}@media(max-width:480px){.class-grid,.feature-grid{column-count:1}nav ul{gap:1rem}.hero h1{font-size:1.85rem}header{padding:0 1.25rem}.feature-card{align-items:center;text-align:center}.cta-group{flex-direction:column;gap:1rem}.btn{width:100%;justify-content:center;min-height:48px}}.btn:focus{outline:3px solid rgba(111,66,193,.14);outline-offset:3px}footer{background:#07080a}@keyframes floatUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.hero h1,.hero h2,.hero p,.cta-group{animation:floatUp .6s ease both}header{height:84px;padding:0 2rem;display:flex;align-items:center;gap:1rem;background:transparent;position:sticky;top:0;z-index:1100}.logo{font-size:1.35rem;display:inline-flex;align-items:center;gap:.5rem;color:var(--primary-600);font-weight:800}.logo-symbol{font-size:1.35rem;color:var(--primary-500)}.search-wrapper{margin-left:auto;margin-right:1rem}.header-search{display:flex;align-items:center;gap:.5rem;background:var(--glass);padding:.35rem .5rem;border-radius:999px;box-shadow:0 6px 18px #0f17240f}.header-search input{border:0;background:transparent;padding:.4rem .5rem;min-width:220px;font-size:.95rem}.header-search button{background:transparent;border:0;color:var(--primary-600);padding:.25rem;font-size:1rem}nav ul{display:flex;gap:1.25rem;align-items:center}nav ul li a{padding:.25rem;border-radius:6px}nav ul li a:hover{background:#6f42c10f;color:var(--primary-600)}.nav-btn{padding:8px 14px;border-radius:10px}.mobile-toggle{display:none}@media(max-width:992px){.search-wrapper{display:none}.mobile-toggle{display:block}header,header.glass-header{padding:0 1.25rem;justify-content:space-between}.logo{margin-right:auto;margin-left:0}}