:root{--color-primary:#FF4500;--color-secondary:#87CEEB;--color-accent:#228B22;--color-bg:#FFFAFA;--color-text:#333333;--color-text-light:#666666;--color-white:#FFFFFF;--font-main:'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background-color:var(--color-bg);color:var(--color-text);line-height:1.6}.container{max-width:1400px;margin:0 auto;padding:0 20px}header{background:var(--color-white);border-bottom:2px solid #eee;padding:15px 0;position:sticky;top:0;z-index:1000}.header-inner{display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:10px;font-size:1.5rem;font-weight:800;color:var(--color-text);text-decoration:none;text-transform:uppercase;letter-spacing:1px}.logo span{color:var(--color-primary)}nav ul{display:flex;list-style:none;gap:25px}nav a{text-decoration:none;color:var(--color-text);font-weight:500;font-size:.95rem;transition:color .3s}nav a:hover{color:var(--color-secondary)}.hero{padding:80px 0;background:linear-gradient(135deg,#f8f9fa 0%,#e9ecef 100%);text-align:center}.hero h1{font-size:3rem;font-weight:800;margin-bottom:20px;color:#1a1a1a}.hero p{font-size:1.25rem;color:var(--color-text-light);max-width:700px;margin:0 auto 30px}.section-title{text-align:center;margin:60px 0 40px;font-size:2rem;position:relative;padding-bottom:15px}.section-title::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:60px;height:4px;background:var(--color-primary)}.course-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:30px;margin-bottom:80px}.course-card{background:var(--color-white);border-radius:8px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,5%);transition:transform .3s,box-shadow .3s;border-top:5px solid var(--color-accent)}.course-card:hover{transform:translateY(-5px);box-shadow:0 8px 25px rgba(0,0,0,.1)}.course-card.stat-card{border-top-color:var(--color-primary)}.course-img{height:200px;background-size:cover;background-position:50%}.course-content{padding:25px}.course-card h3{margin-bottom:12px;font-size:1.4rem}.course-card p{color:var(--color-text-light);font-size:.95rem;margin-bottom:20px}.btn{display:inline-block;padding:12px 25px;background:var(--color-primary);color:var(--color-white);text-decoration:none;border-radius:5px;font-weight:600;transition:background .3s}.btn:hover{background:#e63e00}.btn-secondary{background:var(--color-secondary)}.btn-secondary:hover{background:#76bedb}.info-section{background:var(--color-white);padding:60px 0;margin:40px 0;border-left:10px solid var(--color-secondary)}.content table{width:100%;border-collapse:collapse;margin:20px 0}.content th,.content td{padding:12px;border:1px solid #ddd;text-align:left}.content th{background-color:#f8f9fa;font-weight:600}.content blockquote{padding:20px;background:#fdfdfd;border-left:5px solid var(--color-primary);margin:20px 0;font-style:italic}.content ul,.content ol{margin-left:20px;margin-bottom:20px}.content h2,.content h3,.content h4{margin-top:40px;margin-bottom:15px}.overflow-x-auto{overflow-x:auto;margin:20px 0}footer{background:#222;color:#ccc;padding:50px 0 30px;margin-top:80px}.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:40px;margin-bottom:40px}.footer-col h4{color:var(--color-white);margin-bottom:20px;font-size:1.1rem}.footer-col ul{list-style:none}.footer-col li{margin-bottom:10px}.footer-col a{color:#999;text-decoration:none;transition:color .3s}.footer-col a:hover{color:var(--color-secondary)}.footer-bottom{text-align:center;padding-top:30px;border-top:1px solid #333;font-size:.85rem}