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a:hover{text-decoration:underline}.course-page-title{font-size:clamp(2rem,4vw,3rem);margin-bottom:1.5rem;line-height:1.2}.course-page-description{font-size:1.25rem;color:var(--color-text-secondary);line-height:1.7;margin-bottom:2rem}.course-meta-info{display:flex;flex-wrap:wrap;gap:2rem;margin-bottom:2.5rem;padding-bottom:2.5rem;border-bottom:1px solid var(--color-border)}.meta-item{display:flex;align-items:center;gap:.5rem;color:var(--color-text-secondary);font-size:.9375rem;font-weight:500}.meta-icon{font-size:1.125rem}.course-instructor-info{display:flex;align-items:center;gap:1rem}.instructor-avatar-large{width:60px;height:60px;background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-secondary) 100%);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;font-size:1.5rem}.instructor-label{font-size:.875rem;color:var(--color-text-tertiary);margin-bottom:.25rem}.instructor-name-large{font-size:1.125rem;font-weight:600;color:var(--color-text-primary)}.course-card-sticky{position:sticky;top:6rem;background:var(--color-bg-primary);border:1px solid var(--color-border);border-radius:var(--radius-2xl);overflow:hidden;box-shadow:var(--shadow-lg)}.course-preview-image{position:relative;width:100%;aspect-ratio:16 / 9;background:linear-gradient(135deg,#667eea,#764ba2);overflow:hidden}.course-preview-image img{width:100%;height:100%;object-fit:cover}.preview-placeholder{width:100%;height:100%;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center}.category-badge-large{background:#fffffff2;padding:.625rem 1.25rem;border-radius:2rem;font-size:.875rem;font-weight:600;color:var(--color-primary)}.course-card-content{padding:2rem}.course-price-section{display:flex;flex-direction:column;gap:.25rem;margin-bottom:1.5rem}.price-large{font-size:3rem;font-weight:700;color:var(--color-primary);line-height:1}.price-label{font-size:.875rem;color:var(--color-text-tertiary)}.course-includes{margin-top:2rem;padding-top:2rem;border-top:1px solid var(--color-border)}.includes-title{font-weight:600;color:var(--color-text-primary);margin-bottom:1rem;font-size:1rem}.includes-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.75rem}.includes-list li{color:var(--color-text-secondary);font-size:.9375rem;display:flex;align-items:center;gap:.5rem}.course-skills{padding:4rem 0;background:var(--color-bg-primary)}.course-skills h2{text-align:center;margin-bottom:3rem}.skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;max-width:900px;margin:0 auto}.skill-item{display:flex;align-items:center;gap:.75rem;padding:1rem 1.5rem;background:var(--color-bg-secondary);border-radius:var(--radius-lg);border:1px solid var(--color-border);font-weight:500;color:var(--color-text-primary)}.skill-icon{color:var(--color-primary);font-weight:700;font-size:1.25rem}.course-content{padding:4rem 0;background:var(--color-bg-secondary)}.course-content h2{text-align:center;margin-bottom:1rem}.curriculum-stats{text-align:center;color:var(--color-text-secondary);font-size:1rem;margin-bottom:3rem}.curriculum-preview{max-width:700px;margin:0 auto;text-align:center;background:var(--color-bg-primary);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:3rem}.preview-note{font-size:1.0625rem;color:var(--color-text-secondary);line-height:1.7;margin-bottom:2rem}.course-not-found{min-height:60vh;display:flex;align-items:center;justify-content:center;text-align:center}.course-not-found h1{margin-bottom:1rem}.course-not-found p{margin-bottom:2rem;font-size:1.125rem}@media (max-width: 968px){.course-hero-content{grid-template-columns:1fr;gap:2rem}.course-card-sticky{position:static}.course-meta-info{gap:1rem}.skills-grid{grid-template-columns:1fr}}*{margin:0;padding:0;box-sizing:border-box}:root{--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-primary-light: #3b82f6;--color-secondary: #8b5cf6;--color-accent: #06b6d4;--color-text-primary: #0f172a;--color-text-secondary: #64748b;--color-text-tertiary: #94a3b8;--color-bg-primary: #ffffff;--color-bg-secondary: #f8fafc;--color-bg-tertiary: #f1f5f9;--color-border: #e2e8f0;--color-border-light: #f1f5f9;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2rem;--spacing-xl: 3rem;--spacing-2xl: 4rem;--spacing-3xl: 6rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;--font-heading: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;--container-max-width: 1280px;--container-padding: 1.5rem}html{scroll-behavior:smooth;overflow-x:hidden}body{font-family:var(--font-body);color:var(--color-text-primary);background-color:var(--color-bg-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;line-height:1.2;color:var(--color-text-primary)}h1{font-size:clamp(2.5rem,5vw,4rem);letter-spacing:-.02em}h2{font-size:clamp(2rem,4vw,3rem);letter-spacing:-.01em}h3{font-size:clamp(1.5rem,3vw,2rem)}h4{font-size:clamp(1.25rem,2vw,1.5rem)}p{font-size:1.125rem;line-height:1.7;color:var(--color-text-secondary)}.container{max-width:var(--container-max-width);margin:0 auto;padding:0 var(--container-padding)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.875rem 1.75rem;font-size:1rem;font-weight:600;border-radius:var(--radius-lg);border:none;cursor:pointer;transition:all .2s ease;text-decoration:none;font-family:var(--font-body);white-space:nowrap}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background:transparent;color:var(--color-text-primary);border:2px solid var(--color-border)}.btn-secondary:hover{border-color:var(--color-primary);color:var(--color-primary);transform:translateY(-1px)}.btn-outline{background:transparent;color:var(--color-primary);border:2px solid var(--color-primary)}.btn-outline:hover{background:var(--color-primary);color:#fff;transform:translateY(-1px)}.btn-large{padding:1.125rem 2.25rem;font-size:1.125rem}.card{background:var(--color-bg-primary);border-radius:var(--radius-xl);border:1px solid var(--color-border);padding:var(--spacing-lg);transition:all .3s ease}.card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-lg);transform:translateY(-4px)}input,textarea{width:100%;padding:.875rem 1.25rem;font-size:1rem;font-family:var(--font-body);border:2px solid var(--color-border);border-radius:var(--radius-md);transition:all .2s ease;background:var(--color-bg-primary);color:var(--color-text-primary)}input:focus,textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1a}section{padding:var(--spacing-3xl) 0}@media (max-width: 768px){:root{--container-padding: 1rem}p{font-size:1rem}section{padding:var(--spacing-2xl) 0}}.text-center{text-align:center}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.mt-xl{margin-top:var(--spacing-xl)}.mb-sm{margin-bottom:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}.mb-xl{margin-bottom:var(--spacing-xl)}.flex{display:flex}.flex-center{display:flex;align-items:center;justify-content:center}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .6s ease forwards}html{scroll-behavior:smooth}::selection{background:var(--color-primary);color:#fff}