:root{--primary:#10b981;--primary-dark:#059669;--primary-light:#34d399;--secondary:#6366f1;--accent:#f59e0b;--text-dark:#1e293b;--text-muted:#64748b;--text-light:#94a3b8;--bg-body:#fefdfb;--bg-cream:#fef7ed;--bg-white:#ffffff;--border:#e2e8f0;--border-light:#f1f5f9;--gold:#f59e0b;--silver:#94a3b8;--bronze:#f97316;--danger:#dc2626;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--radius-pill:50px;--shadow-sm:0 2px 8px rgba(0,0,0,0.04);--shadow-md:0 4px 15px rgba(0,0,0,0.05);--shadow-lg:0 10px 30px rgba(0,0,0,0.08);--shadow-xl:0 20px 40px rgba(0,0,0,0.1);--transition:all 0.3s ease}*,*::before,*::after{box-sizing:border-box}*{font-family:'Poppins',sans-serif}body{background:var(--bg-body);color:var(--text-dark);overflow-x:hidden}.main-content{min-height:calc(100vh - 200px)}.navbar{background:var(--bg-white);padding:1rem 0;border-bottom:1px solid var(--border-light)}.navbar-brand{font-weight:700;font-size:1.5rem;color:var(--primary) !important;display:flex;align-items:center;gap:0.5rem}.navbar-brand i{font-size:1.75rem}.nav-link{font-weight:500;color:var(--text-dark) !important;padding:0.5rem 1rem !important;transition:color 0.2s}.nav-link:hover,.nav-link.active{color:var(--primary) !important}.btn-login{color:var(--text-dark);font-weight:500;padding:0.5rem 1.25rem;border:none;background:transparent;transition:color 0.2s;text-decoration:none}.btn-login:hover{color:var(--primary)}.btn-signup{background:var(--primary);color:white;font-weight:600;padding:0.6rem 1.5rem;border-radius:var(--radius-pill);border:none;transition:var(--transition);text-decoration:none;display:inline-block}.btn-signup:hover{background:var(--primary-dark);color:white;transform:translateY(-2px);box-shadow:0 4px 12px rgba(16,185,129,0.3)}.dropdown-menu{border:1px solid var(--border-light);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:0.5rem;margin-top:0.5rem}.dropdown-item{border-radius:var(--radius-sm);padding:0.6rem 1rem;font-weight:500;color:var(--text-dark)}.dropdown-item:hover{background:#f0fdf4;color:var(--primary)}.dropdown-item i{width:20px;margin-right:0.5rem;color:var(--text-muted)}.user-avatar{width:38px;height:38px;border-radius:50%;object-fit:cover;border:2px solid var(--border-light)}@media (max-width:991px){.navbar-collapse{background:white;padding:1.5rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);margin-top:1rem;border:1px solid var(--border-light)}.navbar-nav .nav-item{margin:0.25rem 0}.d-flex.gap-2{flex-direction:column;width:100%;margin-top:1rem}.d-flex.gap-2>*{width:100%;text-align:center}}.btn-primary{background:var(--primary);border-color:var(--primary);border-radius:var(--radius-pill);font-weight:600;padding:0.6rem 1.5rem}.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark)}.btn-outline-primary{color:var(--primary);border-color:var(--primary);border-radius:var(--radius-pill);font-weight:600}.btn-outline-primary:hover{background:var(--primary);border-color:var(--primary)}.card{border:1px solid var(--border-light);border-radius:var(--radius-lg);transition:var(--transition)}.card:hover{box-shadow:var(--shadow-lg)}.badge-soft-green{background:#dcfce7;color:#16a34a}.badge-soft{padding:0.25rem 0.75rem;border-radius:var(--radius-pill);font-weight:500;font-size:0.75rem}.badge-secondary{background:#f1f5f9;color:#475569}.badge-university{background:#e0e7ff;color:#4338ca}.badge-general{background:#fef9c3;color:#854d0e}.page-header{background:white;padding:2rem 0;border-bottom:1px solid var(--border);margin-bottom:2rem}.page-title{font-weight:700;color:var(--text-dark);margin-bottom:0.5rem}.search-card{background:white;border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);margin-bottom:2rem}.form-control,.form-select{border-radius:var(--radius-md);padding:0.75rem 1rem;border-color:var(--border);font-size:0.95rem}.form-control:focus,.form-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(16,185,129,0.1)}.form-label{font-weight:500;color:var(--text-dark);font-size:0.9rem;margin-bottom:0.5rem}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;flex-wrap:wrap;gap:1rem}.section-title{font-size:1.75rem;font-weight:700;color:var(--text-dark)}.section-header-flex{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.section-title-main{font-size:1.5rem;font-weight:700;color:var(--text-dark)}.empty-state{text-align:center;padding:4rem 2rem;background:#f8fafc;border-radius:var(--radius-xl);border:2px dashed var(--border)}.empty-state-icon,.empty-icon{font-size:4rem;margin-bottom:1rem;opacity:0.15;color:var(--text-muted)}.empty-state-title{font-size:1.25rem;font-weight:600;color:var(--text-dark);margin-bottom:0.5rem}.empty-state-text{color:var(--text-muted)}.filter-form{display:flex;gap:0.75rem}.filter-select{padding:0.6rem 1.25rem;border:2px solid var(--border);border-radius:var(--radius-pill);font-size:0.9rem;font-weight:500;color:var(--text-dark);background:white;min-width:150px;cursor:pointer;transition:var(--transition)}.filter-select:focus{outline:none;border-color:var(--primary)}.filter-btn{background:var(--primary);color:white;padding:0.6rem 1.5rem;border-radius:var(--radius-pill);font-size:0.9rem;font-weight:600;border:none;cursor:pointer;transition:var(--transition)}.filter-btn:hover{background:var(--primary-dark)}.footer{background-color:#f8fafc;border-top:1px solid #e2e8f0;color:var(--text-dark)}.hero-warm{background:linear-gradient(135deg,#fef7ed 0%,#fef3e3 50%,#fef9f3 100%);padding:5rem 0;position:relative;overflow:hidden;min-height:90vh;display:flex;align-items:center}.hero-content-wrap{position:relative;z-index:10}.float-element{position:absolute;opacity:0.7;animation:floatAround 8s ease-in-out infinite;z-index:1}.float-book{font-size:2.5rem;color:var(--primary);top:10%;left:8%}.float-pencil{font-size:1.8rem;color:var(--accent);top:20%;right:8%;transform:rotate(45deg);animation-delay:-2s}.float-cap{font-size:2rem;color:var(--secondary);bottom:25%;left:5%;animation-delay:-4s}.float-star{font-size:1.5rem;color:#ec4899;top:35%;left:15%;animation-delay:-1s}.float-cube{font-size:1.8rem;color:#14b8a6;bottom:15%;right:10%;animation-delay:-3s}@keyframes floatAround{0%,100%{transform:translate(0,0) rotate(0deg)}25%{transform:translate(10px,-15px) rotate(5deg)}50%{transform:translate(-5px,-25px) rotate(-3deg)}75%{transform:translate(15px,-10px) rotate(8deg)}}.edu-badge{display:inline-flex;align-items:center;gap:0.75rem;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:white;padding:0.6rem 1.25rem;border-radius:var(--radius-pill);font-size:0.85rem;font-weight:600;margin-bottom:1.5rem;box-shadow:0 4px 15px rgba(16,185,129,0.3)}.edu-badge i{font-size:1rem}.edu-badge-divider{width:1px;height:16px;background:rgba(255,255,255,0.4)}.hero-tagline{font-size:3rem;font-weight:700;color:var(--text-dark);line-height:1.15;margin-bottom:1.25rem}.hero-tagline .highlight{color:var(--primary);display:block}.hero-description{font-size:1.1rem;color:var(--text-muted);max-width:520px;line-height:1.7;margin-bottom:2rem}.hero-cta-group{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:2.5rem}.btn-start{background:var(--primary);color:white;padding:1rem 2rem;border-radius:var(--radius-pill);font-weight:600;font-size:1rem;border:none;display:inline-flex;align-items:center;gap:0.5rem;transition:var(--transition);text-decoration:none;box-shadow:0 4px 15px rgba(16,185,129,0.3)}.btn-start:hover{background:var(--primary-dark);transform:translateY(-3px);box-shadow:0 8px 25px rgba(16,185,129,0.4);color:white}.btn-outline-hero{background:transparent;color:var(--text-dark);padding:1rem 2rem;border-radius:var(--radius-pill);font-weight:600;font-size:1rem;border:2px solid var(--border);display:inline-flex;align-items:center;gap:0.5rem;transition:var(--transition);text-decoration:none}.btn-outline-hero:hover{border-color:var(--primary);color:var(--primary);background:rgba(16,185,129,0.05)}.trust-stats{display:flex;gap:2.5rem;flex-wrap:wrap}.trust-stat{text-align:left}.trust-stat-number{font-size:1.75rem;font-weight:700;color:var(--text-dark);line-height:1;margin-bottom:0.25rem}.trust-stat-label{font-size:0.85rem;color:var(--text-muted)}.hero-image-wrapper{position:relative;z-index:10}.hero-main-image{width:100%;max-width:520px;border-radius:24px;box-shadow:0 25px 50px rgba(0,0,0,0.15);overflow:hidden}.hero-main-image img{width:100%;height:auto;display:block}.floating-stat-card{position:absolute;background:white;border-radius:var(--radius-lg);padding:1rem 1.25rem;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:0.75rem;animation:floatCard 4s ease-in-out infinite}.floating-stat-card.card-1{top:15%;left:-40px}.floating-stat-card.card-2{bottom:20%;right:-30px;animation-delay:-2s}@keyframes floatCard{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}.floating-stat-icon{width:45px;height:45px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.25rem}.floating-stat-icon.green{background:#dcfce7;color:#16a34a}.floating-stat-icon.blue{background:#dbeafe;color:#2563eb}.floating-stat-text h4{font-size:1rem;font-weight:700;color:var(--text-dark);margin:0;line-height:1.2}.floating-stat-text span{font-size:0.75rem;color:var(--text-muted)}.features-row{padding:5rem 0 4rem;background:var(--bg-white)}.features-row .container{max-width:1100px}.feature-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-xl);padding:2rem 1.5rem;text-align:center;transition:var(--transition);text-decoration:none;color:inherit;display:block;height:100%;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--secondary));opacity:0;transition:opacity 0.3s}.feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl);border-color:var(--primary)}.feature-card:hover::before{opacity:1}.feature-icon-circle{width:80px;height:80px;border-radius:var(--radius-xl);display:flex;align-items:center;justify-content:center;margin:0 auto 1.25rem;font-size:2rem;transition:var(--transition)}.feature-icon-circle.green{background:#dcfce7;color:#16a34a}.feature-icon-circle.orange{background:#ffedd5;color:#ea580c}.feature-icon-circle.red{background:#fee2e2;color:#dc2626}.feature-icon-circle.blue{background:#dbeafe;color:#2563eb}.feature-card:hover .feature-icon-circle{transform:scale(1.1) rotate(5deg)}.feature-title{font-weight:700;font-size:1.1rem;color:var(--text-dark);margin-bottom:0.5rem}.feature-desc{font-size:0.9rem;color:var(--text-muted);line-height:1.5;margin-bottom:1rem}.feature-link{color:var(--primary);font-weight:600;font-size:0.875rem;display:inline-flex;align-items:center;gap:0.5rem;transition:gap 0.2s}.feature-card:hover .feature-link{gap:0.75rem}.edu-levels-section{padding:4rem 0;background:linear-gradient(135deg,#f0fdf4,#ecfeff)}.edu-level-card{background:white;border-radius:var(--radius-xl);padding:2.5rem;text-align:center;box-shadow:var(--shadow-md);border:1px solid rgba(16,185,129,0.1);transition:var(--transition);height:100%}.edu-level-card:hover{transform:translateY(-5px);box-shadow:0 15px 35px rgba(0,0,0,0.1)}.edu-level-icon{font-size:3rem;margin-bottom:1rem}.edu-level-title{font-size:1.25rem;font-weight:700;color:var(--text-dark);margin-bottom:0.5rem}.edu-level-desc{font-size:0.9rem;color:var(--text-muted);margin-bottom:1.25rem}.edu-level-features{list-style:none;padding:0;margin:0;text-align:left}.edu-level-features li{display:flex;align-items:center;gap:0.75rem;padding:0.5rem 0;font-size:0.9rem;color:#475569}.edu-level-features li i{color:var(--primary);font-size:0.875rem}.content-with-sidebar{display:grid;grid-template-columns:1fr 380px;gap:3rem;padding:4rem 0}@media (max-width:1199px){.content-with-sidebar{grid-template-columns:1fr}}.sidebar{display:flex;flex-direction:column;gap:2rem}.sidebar-card{background:var(--bg-white);border-radius:var(--radius-lg);padding:1.5rem;border:1px solid var(--border-light);box-shadow:var(--shadow-sm)}.sidebar-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.sidebar-title{font-weight:700;color:var(--text-dark);font-size:1rem}.sidebar-link{color:var(--primary);font-size:0.875rem;font-weight:500;text-decoration:none}.sidebar-link:hover{text-decoration:underline}.sidebar-item{display:flex;gap:1rem;padding:0.75rem 0;border-bottom:1px solid var(--border-light);text-decoration:none;color:inherit;transition:var(--transition)}.sidebar-item:last-child{border-bottom:none}.sidebar-item:hover{background:#f8fafc;margin:0 -0.5rem;padding-left:0.5rem;padding-right:0.5rem;border-radius:var(--radius-sm)}.sidebar-item-thumb{width:60px;height:50px;border-radius:var(--radius-sm);object-fit:cover;background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;color:white;flex-shrink:0}.sidebar-item-content h4{font-size:0.875rem;font-weight:600;color:var(--text-dark);margin-bottom:0.25rem;line-height:1.3}.sidebar-item-content span{font-size:0.75rem;color:var(--primary)}.cta-warm{background:linear-gradient(135deg,var(--primary),var(--primary-dark));padding:5rem 0;text-align:center;position:relative;overflow:hidden}.hero-slider-section{padding:1.5rem 0 2.5rem}.hero-slider{position:relative;overflow:hidden;border-radius:18px;background:#0f172a;display:flex;flex-wrap:nowrap}.hero-slide{display:none;width:100%;color:#f9fafb;align-items:stretch}.hero-slide.active{display:flex;animation:heroSlideIn 0.5s ease}.hero-slide-media{position:relative;flex:0 0 40%;min-height:180px}.hero-slide-media img{width:100%;height:100%;object-fit:cover;border-radius:18px 0 0 18px}.hero-slide-media .hero-slide-gradient{width:100%;height:100%;display:flex;align-items:center;justify-content:center;border-radius:18px 0 0 18px;position:relative;overflow:hidden;background:linear-gradient(135deg,#10b981,#059669)}.hero-slide-media .hero-slide-gradient i{font-size:3.5rem;color:rgba(255,255,255,0.9);text-shadow:0 4px 12px rgba(0,0,0,0.3);animation:floatIcon 3s ease-in-out infinite}@keyframes floatIcon{0%,100%{transform:translateY(0px)}50%{transform:translateY(-10px)}}.hero-slide-tag{position:absolute;top:12px;left:12px;background:rgba(15,23,42,0.8);padding:4px 10px;border-radius:999px;font-size:0.75rem;font-weight:600;text-transform:uppercase;letter-spacing:0.06em}.hero-slide-body{flex:1;padding:1.25rem 1.5rem;display:flex;flex-direction:column;justify-content:center}.hero-slide-title{font-size:1.3rem;font-weight:700;margin-bottom:0.4rem}.hero-slide-subtitle{font-size:0.95rem;color:#e5e7eb;margin-bottom:0.8rem}.hero-slide-cta{display:inline-flex;align-items:center;gap:6px;padding:0.45rem 1rem;border-radius:999px;background:#10b981;color:#0f172a;font-weight:700;font-size:0.9rem;text-decoration:none}.hero-slide-cta:hover{background:#059669;color:#ecfdf5}.hero-slider-dots{display:flex;justify-content:center;gap:6px;margin-top:0.6rem}.hero-dot{width:9px;height:9px;border-radius:50%;border:none;background:#cbd5f5;opacity:0.5}.hero-dot.active{background:#10b981;opacity:1}@keyframes heroSlideIn{from{opacity:0;transform:translateX(10px)}to{opacity:1;transform:translateX(0)}}@media (max-width:768px){.hero-slider{flex-direction:column;border-radius:16px}.hero-slide-media{flex:0 0 auto}.hero-slide-media img{border-radius:16px 16px 0 0;height:180px}.hero-slide-media .hero-slide-gradient{border-radius:16px 16px 0 0;height:180px}.hero-slide-body{padding:0.9rem 1.1rem 1.1rem}.hero-slide-title{font-size:1.1rem}}.cta-warm::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(255,255,255,0.1) 0%,transparent 60%);animation:rotateBg 20s linear infinite}@keyframes rotateBg{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}.cta-content{position:relative;z-index:1}.cta-title-warm{font-size:2.5rem;font-weight:700;color:white;margin-bottom:1rem}.cta-desc-warm{font-size:1.15rem;color:rgba(255,255,255,0.9);margin-bottom:2rem}.btn-cta-white{background:white;color:var(--primary);padding:1rem 2.5rem;border-radius:var(--radius-pill);font-weight:600;font-size:1rem;border:none;display:inline-flex;align-items:center;gap:0.5rem;transition:var(--transition);text-decoration:none;box-shadow:0 4px 15px rgba(0,0,0,0.1)}.btn-cta-white:hover{transform:translateY(-3px);box-shadow:0 8px 25px rgba(0,0,0,0.2);color:var(--primary-dark)}.tutorials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}.blog-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem}.blog-section-warm{padding:4rem 0;background:var(--bg-cream)}.carousel-nav{display:flex;gap:0.5rem}.carousel-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--border);background:var(--bg-white);color:var(--text-muted);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:var(--transition)}.carousel-btn:hover{background:var(--primary);color:white;border-color:var(--primary)}.tutorial-card-warm{background:var(--bg-white);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border-light);transition:var(--transition);text-decoration:none;color:inherit;display:block;box-shadow:var(--shadow-sm)}.tutorial-card-warm:hover{transform:translateY(-5px);box-shadow:0 15px 35px rgba(0,0,0,0.1)}.tutorial-card-thumb{position:relative;aspect-ratio:16/10;overflow:hidden}.tutorial-card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s}.tutorial-card-warm:hover .tutorial-card-thumb img{transform:scale(1.05)}.thumb-placeholder{width:100%;height:100%;background:linear-gradient(135deg,#fef3c7,#fcd34d,#fbbf24);display:flex;align-items:center;justify-content:center;font-size:3rem}.tutorial-card-body{padding:1.25rem}.tutorial-card-title{font-weight:600;font-size:1rem;color:var(--text-dark);margin-bottom:0.5rem;line-height:1.4}.tutorial-card-desc{font-size:0.875rem;color:var(--text-muted);line-height:1.5;margin-bottom:1rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.learn-more-link{color:var(--primary);font-weight:600;font-size:0.875rem;text-decoration:none;display:inline-flex;align-items:center;gap:0.5rem}.learn-more-link:hover{gap:0.75rem}.blog-card-warm{background:var(--bg-white);border-radius:var(--radius-lg);overflow:hidden;border:1px solid #fde68a;transition:var(--transition);text-decoration:none;color:inherit;display:block;box-shadow:var(--shadow-sm)}.blog-card-warm:hover{transform:translateY(-5px);box-shadow:0 15px 35px rgba(0,0,0,0.1)}.blog-card-thumb{height:140px;background:linear-gradient(135deg,#fef3c7,#ecfccb);display:flex;align-items:center;justify-content:center;font-size:3rem}.blog-card-body{padding:1.25rem}.blog-card-tag{display:inline-block;background:#dcfce7;color:#16a34a;padding:0.25rem 0.75rem;border-radius:var(--radius-pill);font-size:0.7rem;font-weight:600;margin-bottom:0.75rem}.blog-card-title{font-weight:600;font-size:1rem;color:var(--text-dark);line-height:1.4;margin-bottom:0.75rem}.blog-card-meta{font-size:0.75rem;color:var(--text-light)}.page-hero{background:linear-gradient(135deg,#fef7ed 0%,#fef3e3 50%,#fef9f3 100%);padding:1.25rem 0 1.5rem;text-align:center;position:relative;overflow:hidden}.page-hero::before{content:'';position:absolute;top:-100px;right:-100px;width:300px;height:300px;background:rgba(16,185,129,0.1);border-radius:50%}.page-hero::after{content:'';position:absolute;bottom:-50px;left:-50px;width:200px;height:200px;background:rgba(99,102,241,0.08);border-radius:50%}.page-hero-content{position:relative;z-index:1}.page-badge{display:inline-flex;align-items:center;gap:0.5rem;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:white;padding:0.5rem 1.25rem;border-radius:var(--radius-pill);font-size:0.85rem;font-weight:600;margin-bottom:1rem}.page-subtitle{font-size:1.1rem;color:var(--text-muted);max-width:600px;margin:0 auto}.challenge-section{background:linear-gradient(135deg,#1e1b4b,#312e81,#3730a3);padding:2.5rem 0 3rem;position:relative;overflow:hidden}.challenge-section::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");opacity:0.5}.challenge-header{text-align:center;margin-bottom:3rem;position:relative;z-index:1}.challenge-badge{display:inline-flex;align-items:center;gap:0.75rem;background:linear-gradient(135deg,var(--accent),#d97706);color:white;padding:0.6rem 1.5rem;border-radius:var(--radius-pill);font-size:0.85rem;font-weight:700;margin-bottom:1rem;text-transform:uppercase;letter-spacing:1px}.challenge-title-main{font-size:2.25rem;font-weight:700;color:white;margin-bottom:0.5rem}.challenge-subtitle-main{font-size:1rem;color:rgba(255,255,255,0.7)}.challenge-card{background:rgba(255,255,255,0.95);border-radius:var(--radius-xl);overflow:hidden;box-shadow:0 15px 40px rgba(0,0,0,0.2);transition:var(--transition);height:100%;position:relative;z-index:1}.challenge-card:hover{transform:translateY(-8px);box-shadow:0 25px 50px rgba(0,0,0,0.3)}.challenge-card-header{padding:1.5rem;display:flex;justify-content:space-between;align-items:flex-start;border-bottom:1px solid var(--border-light)}.challenge-card-header .prize-box{background:linear-gradient(135deg,var(--accent),#d97706);padding:0.75rem 1rem;border-radius:var(--radius-md);text-align:center;min-width:100px}.prize-box .prize-amount{font-size:1.25rem;font-weight:800;color:white;line-height:1}.prize-box .prize-label{font-size:0.65rem;color:rgba(255,255,255,0.9);text-transform:uppercase;font-weight:600}.status-badge{padding:0.4rem 0.75rem;border-radius:var(--radius-pill);font-size:0.7rem;font-weight:700;text-transform:uppercase;letter-spacing:0.5px}.status-badge.live{background:#dcfce7;color:#16a34a;animation:pulse-subtle 2s ease-in-out infinite}.status-badge.upcoming{background:#dbeafe;color:#2563eb}.status-badge.ended{background:#f1f5f9;color:var(--text-muted)}@keyframes pulse-subtle{0%,100%{opacity:1}50%{opacity:0.7}}.challenge-card-body{padding:1.5rem}.challenge-tags{display:flex;gap:0.5rem;flex-wrap:wrap;margin-bottom:1rem}.challenge-tag{padding:0.35rem 0.75rem;border-radius:var(--radius-pill);font-size:0.75rem;font-weight:600}.challenge-tag.subject{background:#ede9fe;color:#7c3aed}.challenge-tag.level-secondary{background:#dcfce7;color:#16a34a}.challenge-tag.level-university{background:#ffedd5;color:#ea580c}.challenge-card-title{font-size:1.25rem;font-weight:700;color:var(--text-dark);margin-bottom:1rem;line-height:1.3}.challenge-timer{background:#f8fafc;border-radius:var(--radius-md);padding:1rem;margin-bottom:1.25rem}.timer-label{font-size:0.75rem;color:var(--text-muted);text-transform:uppercase;font-weight:600;text-align:center;margin-bottom:0.5rem}.timer-display{display:flex;justify-content:center;gap:0.5rem}.timer-block{background:white;padding:0.5rem 0.75rem;border-radius:var(--radius-sm);text-align:center;min-width:50px;box-shadow:var(--shadow-sm)}.timer-block .value{font-size:1.25rem;font-weight:700;color:var(--secondary);line-height:1}.timer-block .unit{font-size:0.6rem;color:var(--text-light);text-transform:uppercase;font-weight:600}.timer-separator{font-size:1.25rem;font-weight:700;color:var(--secondary);line-height:2}.challenge-card-footer{padding:0 1.5rem 1.5rem}.btn-challenge{display:flex;align-items:center;justify-content:center;gap:0.5rem;width:100%;padding:0.85rem 1.5rem;border-radius:var(--radius-pill);font-size:0.95rem;font-weight:600;text-decoration:none;border:none;cursor:pointer;transition:var(--transition)}.btn-challenge-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:white;box-shadow:0 4px 15px rgba(16,185,129,0.3)}.btn-challenge-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(16,185,129,0.4);color:white}.btn-challenge-secondary{background:#f1f5f9;color:var(--text-muted)}.btn-challenge-secondary:hover{background:var(--border);color:#475569}.btn-challenge-disabled{background:var(--border);color:var(--text-light);cursor:not-allowed}.quiz-section{padding:4rem 0;background:var(--bg-white)}.quiz-card{background:white;border:1px solid var(--border);border-radius:var(--radius-xl);overflow:hidden;transition:var(--transition);height:100%;box-shadow:var(--shadow-sm);position:relative}.quiz-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--secondary));opacity:0;transition:opacity 0.3s}.quiz-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl);border-color:var(--primary)}.quiz-card:hover::before{opacity:1}.quiz-card-header{padding:1.5rem 1.5rem 0}.quiz-tags{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:0.5rem;margin-bottom:0.75rem}.quiz-subject-tag{background:#dcfce7;color:#16a34a;padding:0.35rem 0.75rem;border-radius:var(--radius-pill);font-size:0.75rem;font-weight:600}.exam-tags{display:flex;gap:0.35rem;flex-wrap:wrap}.exam-tag{padding:0.25rem 0.5rem;border-radius:4px;font-size:0.65rem;font-weight:700}.exam-tag.waec{background:#374151;color:white}.exam-tag.neco{background:#1f2937;color:white}.exam-tag.jamb{background:#fbbf24;color:#1f2937}.exam-tag.gce{background:#06b6d4;color:white}.exam-tag.uni{background:var(--primary);color:white}.quiz-card-body{padding:1rem 1.5rem}.quiz-title{font-size:1.1rem;font-weight:700;color:var(--text-dark);margin-bottom:0.5rem;line-height:1.3}.quiz-description{font-size:0.875rem;color:var(--text-muted);line-height:1.5;margin-bottom:1rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:42px}.quiz-meta{display:flex;gap:1.5rem;flex-wrap:wrap;margin-bottom:1rem}.quiz-meta-item{display:flex;align-items:center;gap:0.4rem;font-size:0.8rem;color:var(--text-muted)}.quiz-meta-item i{color:var(--primary)}.quiz-card-footer{padding:0 1.5rem 1.5rem}.btn-quiz{display:flex;align-items:center;justify-content:center;gap:0.5rem;width:100%;padding:0.85rem 1.5rem;border-radius:var(--radius-pill);font-size:0.9rem;font-weight:600;text-decoration:none;border:none;cursor:pointer;transition:var(--transition)}.btn-quiz-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:white;box-shadow:0 4px 15px rgba(16,185,129,0.3)}.btn-quiz-primary:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(16,185,129,0.4);color:white}.btn-quiz-disabled{background:var(--border);color:var(--text-light);cursor:not-allowed}.quiz-date{text-align:center;font-size:0.75rem;color:var(--text-light);margin-top:1rem}.tut-card{background:white;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:var(--transition);box-shadow:var(--shadow-sm)}.tut-card:hover{transform:translateY(-5px);box-shadow:0 12px 24px -5px rgba(0,0,0,0.1);border-color:var(--primary)}.tut-thumb{position:relative;aspect-ratio:16/9;cursor:pointer;overflow:hidden}.tut-thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform 0.5s ease}.tut-card:hover .tut-thumb img{transform:scale(1.05)}.tut-thumb::after{content:'';position:absolute;inset:0;background:linear-gradient(to bottom,rgba(0,0,0,0.05),rgba(0,0,0,0.35));pointer-events:none}.tut-play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;z-index:2}.tut-play-btn{width:56px;height:56px;border-radius:50%;background:rgba(255,255,255,0.95);border:none;display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:1.25rem;box-shadow:0 4px 20px rgba(0,0,0,0.2);transition:var(--transition);cursor:pointer}.tut-play-btn i{margin-left:3px}.tut-card:hover .tut-play-btn{transform:scale(1.1);background:var(--primary);color:white}.tut-body{padding:1.25rem}.tut-badges{display:flex;flex-wrap:wrap;gap:0.4rem;margin-bottom:0.75rem}.tut-badge{display:inline-block;padding:0.2rem 0.6rem;border-radius:var(--radius-pill);font-size:0.7rem;font-weight:600}.tut-badge-level{background:#ecfdf5;color:var(--primary-dark)}.tut-badge-course{background:#f1f5f9;color:#475569}.tut-title{font-weight:600;font-size:1rem;color:var(--text-dark);margin-bottom:0.5rem;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.tut-desc{font-size:0.85rem;color:var(--text-muted);line-height:1.6;margin-bottom:1rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.tut-footer{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--border-light);padding-top:0.75rem}.tut-yt-link{display:inline-flex;align-items:center;gap:0.4rem;color:#dc2626;font-size:0.8rem;font-weight:600;text-decoration:none;transition:var(--transition)}.tut-yt-link:hover{color:#b91c1c}.tut-yt-link i{font-size:1rem}.tut-embed{position:relative;width:100%;aspect-ratio:16/9}.tut-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0;border-radius:var(--radius-lg) var(--radius-lg) 0 0}#searchSuggest{border-radius:var(--radius-md);border:1px solid var(--border);margin-top:4px}#searchSuggest .list-group-item{border:none;border-bottom:1px solid var(--border-light);padding:0.6rem 1rem;font-size:0.9rem}#searchSuggest .list-group-item:last-child{border-bottom:none}.blog-hero{background:linear-gradient(135deg,var(--primary),var(--primary-dark));padding:4rem 0;color:white;margin-bottom:3rem;position:relative;overflow:hidden}.blog-hero::after{content:'';position:absolute;top:-50px;right:-50px;width:300px;height:300px;background:rgba(255,255,255,0.1);border-radius:50%}.post-card{background:white;border-radius:var(--radius-xl);overflow:hidden;transition:var(--transition);height:100%;border:1px solid var(--border-light);display:flex;flex-direction:column}.post-card:hover{transform:translateY(-5px);box-shadow:0 12px 24px -5px rgba(0,0,0,0.1);border-color:var(--primary)}.post-image{height:200px;background:#f1f5f9;position:relative;overflow:hidden}.post-image img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}.post-card:hover .post-image img{transform:scale(1.05)}.post-body{padding:1.5rem;flex-grow:1;display:flex;flex-direction:column}.post-meta{font-size:0.85rem;color:var(--text-muted);margin-bottom:0.75rem;display:flex;align-items:center;gap:1rem}.post-title{font-size:1.25rem;font-weight:700;color:var(--text-dark);margin-bottom:0.75rem;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.post-excerpt{color:var(--text-muted);font-size:0.95rem;margin-bottom:1.5rem;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex-grow:1}.btn-read-more{color:var(--primary);font-weight:600;text-decoration:none;display:inline-flex;align-items:center;transition:transform 0.2s;margin-top:auto}.btn-read-more:hover{transform:translateX(5px);color:var(--primary-dark)}.material-card{background:white;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:var(--transition);height:100%;display:flex;flex-direction:column}.material-card:hover{transform:translateY(-5px);box-shadow:0 12px 24px -5px rgba(0,0,0,0.1);border-color:var(--primary)}.material-icon{height:140px;background:#f8fafc;display:flex;align-items:center;justify-content:center;font-size:3rem;color:var(--text-muted);border-bottom:1px solid var(--border)}.material-icon.pdf{color:#ef4444;background:#fef2f2}.material-icon.doc{color:#3b82f6;background:#eff6ff}.material-icon.ppt{color:#f97316;background:#fff7ed}.material-icon.xls{color:var(--primary);background:#ecfdf5}.material-body{padding:1.25rem;flex-grow:1;display:flex;flex-direction:column}.material-title{font-weight:600;color:var(--text-dark);margin-bottom:0.5rem;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.material-desc{color:var(--text-muted);font-size:0.85rem;margin-bottom:1rem;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex-grow:1}.material-meta{font-size:0.8rem;color:var(--text-muted);margin-bottom:1rem;display:flex;flex-wrap:wrap;gap:0.5rem}.btn-download{width:100%;border-radius:10px;padding:0.6rem;font-weight:600;font-size:0.9rem}.dashboard-container{padding:2rem 0}.welcome-banner{background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-radius:var(--radius-xl);padding:2.5rem;color:white;position:relative;overflow:hidden;margin-bottom:2rem;box-shadow:0 10px 30px rgba(16,185,129,0.2)}.welcome-banner::before{content:'';position:absolute;top:-50%;right:-10%;width:300px;height:300px;background:rgba(255,255,255,0.1);border-radius:50%}.welcome-banner::after{content:'';position:absolute;bottom:-30%;right:10%;width:200px;height:200px;background:rgba(255,255,255,0.1);border-radius:50%}.welcome-content{position:relative;z-index:1}.welcome-title{font-size:2rem;font-weight:700;margin-bottom:0.5rem}.welcome-subtitle{font-size:1.1rem;opacity:0.9;max-width:600px}.dash-card{background:var(--bg-white);border-radius:var(--radius-xl);border:1px solid var(--border-light);box-shadow:var(--shadow-sm);padding:1.5rem;height:100%;transition:var(--transition)}.dash-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}.dash-card:last-child:hover,.dash-card:has(.activity-list):hover{transform:none;box-shadow:var(--shadow-sm)}.profile-card{text-align:center}.profile-img-container{position:relative;display:inline-block;margin-bottom:1rem}.profile-img{width:120px;height:120px;border-radius:50%;object-fit:cover;border:4px solid white;box-shadow:var(--shadow-md)}.profile-badge{position:absolute;bottom:5px;right:5px;background:var(--primary);color:white;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;border:2px solid white}.profile-name{font-size:1.25rem;font-weight:700;color:var(--text-dark);margin-bottom:0.25rem}.profile-role{font-size:0.9rem;color:var(--primary);font-weight:600;margin-bottom:0.5rem;background:#ecfdf5;display:inline-block;padding:0.25rem 0.75rem;border-radius:var(--radius-pill)}.profile-details{font-size:0.9rem;color:var(--text-muted);margin-top:1rem;padding-top:1rem;border-top:1px solid var(--border-light)}.stat-card{display:flex;align-items:center;padding:1.25rem;border-radius:var(--radius-lg);margin-bottom:1rem}.stat-icon{width:50px;height:50px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-right:1rem;color:white}.stat-info h3{font-size:1.5rem;font-weight:700;margin:0;line-height:1.1}.stat-info p{margin:0;font-size:0.85rem;color:var(--text-muted)}.stat-materials{background:#eff6ff}.stat-materials .stat-icon{background:linear-gradient(135deg,#3b82f6,#2563eb)}.stat-quizzes{background:#f0fdf4}.stat-quizzes .stat-icon{background:linear-gradient(135deg,var(--primary),var(--primary-dark))}.stat-card.flex-column{flex-direction:column;align-items:center;gap:0}.stat-card.flex-column .stat-icon{margin-right:0;width:42px;height:42px;font-size:1.2rem}.stat-card.flex-column .stat-info h3{font-size:1.3rem}.stat-card.flex-column .stat-info p{font-size:0.75rem}.dash-card:has(.activity-list){height:auto !important}.quick-links-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}.quick-link-item{background:white;border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.25rem;text-align:center;text-decoration:none;color:var(--text-dark);transition:var(--transition)}.quick-link-item:hover{border-color:var(--primary);transform:translateY(-3px);background:#f0fdf4;color:var(--primary)}.quick-link-icon{font-size:1.75rem;margin-bottom:0.75rem;color:var(--primary)}.quick-link-title{font-size:0.9rem;font-weight:600;display:block}.activity-list{list-style:none;padding:0;margin:0}.activity-item{display:flex;gap:1rem;padding:0.75rem 0;margin-bottom:0;border-bottom:1px solid var(--border-light);transition:background 0.2s ease;border-radius:8px;padding-left:0.5rem}.activity-item:hover{background:#f8fafc}.activity-item:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.activity-icon{width:40px;height:40px;border-radius:10px;background:#f8fafc;display:flex;align-items:center;justify-content:center;color:var(--secondary);flex-shrink:0}.activity-content h6{font-size:0.95rem;font-weight:600;margin-bottom:0.25rem;color:var(--text-dark)}.activity-content p{font-size:0.85rem;color:var(--text-muted);margin-bottom:0.25rem}.activity-time{font-size:0.75rem;color:var(--text-light)}.page-title i{color:var(--gold);font-size:1.5rem}.challenge-selector{background:white;border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);margin-bottom:2rem}.challenge-selector-title{font-size:0.9rem;font-weight:600;color:var(--text-dark);margin-bottom:1rem;display:flex;align-items:center;gap:0.5rem}.challenge-selector-title i{color:var(--primary)}.challenge-pills{display:flex;flex-wrap:wrap;gap:0.5rem}.challenge-pill{display:inline-block;padding:0.5rem 1.25rem;border-radius:var(--radius-pill);border:2px solid var(--border);background:white;color:var(--text-muted);font-weight:600;font-size:0.85rem;text-decoration:none;transition:var(--transition)}.challenge-pill:hover{border-color:var(--primary);color:var(--primary);background:#f0fdf4}.challenge-pill.active{background:var(--primary);border-color:var(--primary);color:white}.quiz-info-bar{background:white;border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.25rem 1.5rem;margin-bottom:1.5rem;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1rem;box-shadow:var(--shadow-sm)}.quiz-info-title{font-weight:700;font-size:1.1rem;color:var(--text-dark);display:flex;align-items:center;gap:0.5rem}.quiz-info-title i{color:var(--primary)}.quiz-info-details{display:flex;gap:1rem;flex-wrap:wrap}.quiz-info-tag{display:inline-flex;align-items:center;gap:0.35rem;font-size:0.8rem;color:var(--text-muted);font-weight:500}.quiz-info-tag i{color:var(--primary);font-size:0.75rem}.prize-tag{background:#fef3c7;color:#92400e;padding:0.25rem 0.75rem;border-radius:var(--radius-pill);font-size:0.8rem;font-weight:600}.leaderboard-table{background:white;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}.leaderboard-row{display:flex;align-items:center;padding:1.25rem 1.5rem;gap:1.25rem;border-bottom:1px solid var(--border-light);transition:background 0.2s ease}.leaderboard-row:last-child{border-bottom:none}.leaderboard-row:hover{background:#fafafa}.rank-num{min-width:44px;height:44px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1rem;font-weight:800;background:#f1f5f9;color:var(--text-muted);flex-shrink:0;position:relative}.rank-1 .rank-num{background:linear-gradient(135deg,#fef3c7,#fde68a);color:#92400e;box-shadow:0 3px 10px rgba(245,158,11,0.2)}.rank-1 .rank-num::after{content:'🥇';position:absolute;top:-8px;right:-8px;font-size:1rem}.rank-2 .rank-num{background:linear-gradient(135deg,#f1f5f9,var(--border));color:#475569;box-shadow:0 3px 10px rgba(148,163,184,0.2)}.rank-3 .rank-num{background:linear-gradient(135deg,#ffedd5,#fed7aa);color:#9a3412;box-shadow:0 3px 10px rgba(249,115,22,0.2)}.lb-user{flex:1;display:flex;align-items:center;gap:0.75rem;min-width:0}.lb-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:white;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1rem;flex-shrink:0;border:2px solid var(--border-light)}.lb-avatar-img{width:44px;height:44px;border-radius:50%;object-fit:cover;border:2px solid var(--border-light);flex-shrink:0}.rank-1 .lb-avatar,.rank-1 .lb-avatar-img{border-color:var(--gold)}.rank-2 .lb-avatar,.rank-2 .lb-avatar-img{border-color:var(--silver)}.rank-3 .lb-avatar,.rank-3 .lb-avatar-img{border-color:var(--bronze)}.lb-name{font-weight:600;font-size:0.95rem;color:var(--text-dark);line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lb-type{font-size:0.75rem;color:var(--text-muted);font-weight:500}.lb-stats{display:flex;gap:2rem;align-items:center;flex-shrink:0}.lb-stat{text-align:center}.lb-stat-label{display:block;font-size:0.65rem;color:var(--text-muted);font-weight:600;text-transform:uppercase;letter-spacing:0.5px;margin-bottom:0.15rem}.lb-stat-value{display:block;font-size:1.1rem;font-weight:800;color:var(--text-dark)}.lb-stat-value.score-val{color:var(--primary)}.lb-stat-value.time-val{color:var(--secondary)}@media (max-width:991px){.hero-warm{padding:3rem 0;min-height:auto}.hero-tagline{font-size:2.25rem}.hero-image-wrapper{display:none}.trust-stats{justify-content:center}.hero-content-wrap{text-align:center}.hero-description{margin-left:auto;margin-right:auto;font-size:1rem}.hero-cta-group{justify-content:center}.float-element{display:none}.tutorials-grid{grid-template-columns:repeat(2,1fr)}.challenge-title-main{font-size:1.75rem}.page-title{font-size:2rem}}@media (max-width:768px){.page-header{padding:1.5rem 0}.dashboard-container{padding:1rem 0}.welcome-banner{padding:1.5rem;margin-bottom:1.5rem}.welcome-title{font-size:1.5rem}.leaderboard-row{flex-wrap:wrap;padding:1rem;gap:0.75rem}.rank-num{min-width:38px;height:38px;font-size:0.9rem}.lb-avatar,.lb-avatar-img{width:38px;height:38px}.lb-stats{width:100%;justify-content:space-around;padding-top:0.75rem;border-top:1px solid var(--border-light)}.lb-stat-value{font-size:1rem}.quiz-info-bar{flex-direction:column;align-items:flex-start}.tut-body{padding:1rem}.blog-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:575px){.hero-warm{padding:2rem 0 2.5rem}.edu-badge{font-size:0.7rem;padding:0.5rem 1rem;gap:0.5rem;margin-bottom:1rem}.edu-badge i{font-size:0.8rem}.edu-badge-divider{height:12px}.hero-tagline{font-size:1.65rem;line-height:1.2;margin-bottom:0.75rem}.hero-tagline .highlight{display:inline}.hero-description{font-size:0.9rem;line-height:1.6;margin-bottom:1.5rem}.hero-cta-group{flex-direction:column;gap:0.75rem;align-items:stretch}.btn-start,.btn-outline-hero{padding:0.85rem 1.5rem;font-size:0.9rem;justify-content:center}.trust-stats{gap:1.25rem;background:white;padding:1rem 1.25rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);justify-content:space-around}.trust-stat{text-align:center}.trust-stat-number{font-size:1.25rem}.trust-stat-label{font-size:0.7rem}.features-row{padding:2.5rem 0 2rem}.feature-card{padding:1.25rem 1rem;border-radius:var(--radius-lg)}.feature-icon-circle{width:60px;height:60px;font-size:1.5rem;margin-bottom:1rem}.feature-title{font-size:0.95rem}.feature-desc{font-size:0.8rem;margin-bottom:0.75rem}.feature-link{font-size:0.8rem}.edu-levels-section{padding:2.5rem 0}.edu-level-card{padding:1.5rem}.edu-level-icon{font-size:2.25rem}.edu-level-title{font-size:1.1rem}.edu-level-features li{font-size:0.85rem}.cta-warm{padding:3rem 0}.cta-title-warm{font-size:1.75rem}.cta-desc-warm{font-size:1rem}.btn-cta-white{padding:0.85rem 2rem;font-size:0.9rem}.page-hero{padding:1rem 0 1.25rem}.page-title{font-size:1.65rem}.page-subtitle{font-size:0.95rem}.challenge-section{padding:2.5rem 0}.challenge-title-main{font-size:1.5rem}.section-header{flex-direction:column;align-items:stretch}.filter-form{flex-direction:column}.filter-select,.filter-btn{width:100%}.tutorials-grid{grid-template-columns:1fr}.blog-grid{grid-template-columns:1fr}.challenge-pill{padding:0.4rem 1rem;font-size:0.8rem}.lb-name{font-size:0.85rem}}.level-toggle{display:inline-flex;background:#f1f5f9;border-radius:var(--radius-pill);padding:4px;gap:0;border:1px solid var(--border)}.level-toggle .toggle-btn{padding:0.6rem 1.5rem;border-radius:var(--radius-pill);border:none;background:transparent;font-weight:600;font-size:0.9rem;color:var(--text-muted);cursor:pointer;transition:var(--transition);display:inline-flex;align-items:center;gap:0.5rem;white-space:nowrap}.level-toggle .toggle-btn:hover{color:var(--text-dark)}.level-toggle .toggle-btn.active{background:var(--primary);color:white;box-shadow:0 2px 8px rgba(16,185,129,0.3)}.level-toggle .toggle-btn.active i{color:white}.level-toggle .toggle-btn i{font-size:0.85rem;color:var(--text-light)}.sub-filters{overflow:hidden;max-height:0;opacity:0;transition:max-height 0.35s ease,opacity 0.25s ease,margin 0.25s ease;margin-top:0}.sub-filters.show{max-height:200px;opacity:1;margin-top:1rem}.sub-filter-chips{display:flex;flex-wrap:wrap;gap:0.5rem}.sub-filter-chip{padding:0.4rem 1rem;border-radius:var(--radius-pill);border:2px solid var(--border);background:white;font-size:0.8rem;font-weight:600;color:var(--text-muted);cursor:pointer;transition:var(--transition)}.sub-filter-chip:hover{border-color:var(--primary);color:var(--primary)}.sub-filter-chip.active{background:var(--primary);border-color:var(--primary);color:white}.filter-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:1rem;margin-bottom:1.5rem}.filter-toolbar .search-input-wrap{flex:1;min-width:200px;position:relative}.filter-toolbar .search-input-wrap input{width:100%;padding:0.7rem 1rem 0.7rem 2.75rem;border:2px solid var(--border);border-radius:var(--radius-pill);font-size:0.9rem;transition:var(--transition);background:white}.filter-toolbar .search-input-wrap input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(16,185,129,0.1)}.filter-toolbar .search-input-wrap .search-icon{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:var(--text-light);pointer-events:none}.filter-count{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;background:var(--primary);color:white;border-radius:50%;font-size:0.7rem;font-weight:700;margin-left:0.5rem}.result-bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;padding:0.75rem 1rem;background:#f8fafc;border-radius:var(--radius-md);border:1px solid var(--border-light)}.result-count{font-size:0.85rem;color:var(--text-muted);font-weight:500}.result-count strong{color:var(--text-dark)}@media (max-width:575px){.level-toggle{width:100%}.level-toggle .toggle-btn{flex:1;justify-content:center;padding:0.5rem 0.75rem;font-size:0.8rem}.filter-toolbar{flex-direction:column;align-items:stretch}.filter-toolbar .search-input-wrap{min-width:100%}}