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rgba(229,231,235,.5);position:relative;overflow:hidden}.get-started-section:before{content:"";position:absolute;top:-30%;right:-10%;width:400px;height:400px;background:radial-gradient(circle,rgba(99,102,241,.1) 0%,transparent 70%);pointer-events:none}.get-started-section:after{content:"";position:absolute;bottom:-40%;left:-15%;width:350px;height:350px;background:radial-gradient(circle,rgba(16,185,129,.1) 0%,transparent 70%);pointer-events:none}.get-started-section .section-header{text-align:center;margin-bottom:32px;position:relative;z-index:1}.get-started-section .section-title{font-size:2rem;font-weight:800;letter-spacing:-.02em;line-height:1.2;padding-bottom:4px;background:linear-gradient(135deg,#1f2937,#6366f1,#10b981);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px;overflow:visible}.get-started-card{background:#fff;border-radius:24px;padding:40px 32px;box-shadow:0 8px 24px 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24px}.features-enhanced{grid-template-columns:repeat(3,1fr)}.benefits-grid{grid-template-columns:repeat(2,1fr)}.how-it-works-section .section-title,.why-teachers-section .section-title{font-size:2.5rem}}@media (max-width: 640px){.how-it-works-section,.why-teachers-section{padding:24px 16px;margin:32px 0}.features-enhanced,.benefits-grid{grid-template-columns:1fr;gap:20px}.feature-card,.benefit-card{padding:24px 20px}.feature-icon,.benefit-icon-wrapper{width:60px;height:60px}.benefit-icon{font-size:2rem}.how-it-works-section .section-title,.why-teachers-section .section-title,.get-started-section .section-title{font-size:1.75rem}.section-subtitle{font-size:1rem}.get-started-section{padding:24px 16px;margin:32px 0}.get-started-card{padding:32px 24px}.get-started-content h3{font-size:1.5rem}.get-started-content p{font-size:1rem}}.sidebar{width:320px;flex-shrink:0;padding:24px 20px;position:relative;min-height:calc(100vh - 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var(--border);background:#ffffffe6;border-radius:12px;cursor:pointer;text-align:left;font-size:.9rem;font-weight:500;color:var(--text);transition:all .2s ease}.sidebar-btn:hover{background:#fff;transform:translate(4px);box-shadow:var(--shadow-sm)}.sidebar-btn.primary{background:var(--gradient-primary);color:#fff;border-color:transparent;font-weight:600}.sidebar-btn.primary:hover{box-shadow:0 4px 12px #10b9814d}.sidebar-btn-icon{font-size:1.2rem;width:24px;text-align:center}.lessons-list{display:flex;flex-direction:column;gap:8px}.lesson-item{background:#ffffffe6;border:1px solid var(--border);border-radius:12px;padding:12px;cursor:pointer;transition:all .2s ease}.lesson-item:hover{background:#fff;transform:translate(4px);box-shadow:var(--shadow-sm)}.lesson-time{font-size:.75rem;color:var(--muted);font-weight:600;margin-bottom:4px}.lesson-name{font-size:.9rem;font-weight:600;color:var(--text)}.classes-list{display:flex;flex-direction:column;gap:8px}.class-item{display:flex;align-items:center;gap:12px;background:#ffffffe6;border:1px solid var(--border);border-radius:12px;padding:12px;cursor:pointer;transition:all .2s ease}.class-item:hover{background:#fff;transform:translate(4px);box-shadow:var(--shadow-sm)}.class-color-dot{width:12px;height:12px;border-radius:50%;flex-shrink:0;box-shadow:0 0 0 3px #0000000d}.class-info{flex:1;min-width:0}.class-name{font-size:.9rem;font-weight:600;color:var(--text);margin-bottom:2px}.class-meta{font-size:.75rem;color:var(--muted)}.sidebar-link{width:100%;padding:8px 0;text-align:center;color:var(--primary);font-size:.85rem;font-weight:600;background:none;border:none;cursor:pointer;transition:all .2s ease}.sidebar-link:hover{color:var(--accent);transform:translate(4px)}@media (max-width: 1024px){.sidebar{display:none}.content{flex-direction:column}}@media (max-width: 640px){.page{padding:16px 12px}.page-title{font-size:1.75rem}.card-body{padding:16px}.card-title{padding:16px;font-size:1rem}.btn{padding:10px 14px;font-size:.95rem}.content{padding-top:120px}.app-container.no-header .content{padding-top:12px}.header-content{flex-direction:column;align-items:flex-start;gap:16px;padding:12px 16px}.header-logo-section{width:100%}.header-logo{height:32px}.header-brand{font-size:1.25rem}.header-nav{flex-wrap:wrap;gap:6px;width:100%}.header-nav-item{padding:8px 12px;font-size:13px}.header-nav-item span{display:none}.header-nav-item svg{width:20px;height:20px}}@media print{@page{margin:20px 0;size:auto}body{background:#fff;overflow:hidden!important}html{overflow:hidden!important}.app-container{padding:0;overflow:hidden}.nav,.no-print{display:none!important}.page{max-width:800px;margin:0 auto;padding:20px;box-shadow:none;overflow:hidden;page-break-inside:auto;break-inside:auto}.card{overflow:visible;border-radius:12px;page-break-inside:auto;break-inside:auto;margin-top:0;margin-bottom:20px;box-decoration-break:clone;-webkit-box-decoration-break:clone;background-clip:padding-box}.card-body{padding-top:20px;padding-bottom:20px;page-break-inside:auto;break-inside:auto}.printable-section{margin-bottom:20px;page-break-inside:auto;break-inside:auto;padding-bottom:12px}.printable-heading{page-break-after:avoid;break-after:avoid;page-break-inside:avoid;break-inside:avoid;margin-top:0;margin-bottom:8px}.printable-content{page-break-inside:auto;break-inside:auto}.printable-paragraph{page-break-inside:avoid;break-inside:avoid;orphans:2;widows:2;margin-bottom:8px;margin-top:0}.printable-section>.printable-heading+.printable-content{page-break-before:avoid;break-before:avoid}.printable-section:not(:first-child){margin-top:20px;padding-top:12px}.printable-section:after{content:"";display:block;height:0;page-break-after:auto;break-after:auto}}