:root{--main-color:#2a5c8a;--main-dark:#1e4263;--accent-color:#d4af37;--bg-light:#f0f7ff;--text-dark:#333;--text-gray:#666;--white:#fff;--error-red:#c53030;--warning-yellow:#f39c12}body{margin:0;padding:0;font-family:'Outfit',sans-serif;color:var(--text-dark);background-color:#f1f1f1}.container{max-width:1100px;margin:0 auto;padding:0 20px}h1,h2,h3{font-family:'Cormorant Garamond',serif;color:var(--main-color)}h1{font-size:36px;text-align:center;margin-bottom:30px}h2{font-size:26px;margin-top:30px;margin-bottom:15px}h3{font-size:22px;margin-top:20px}.site-header{background:var(--white);padding:20px 0;box-shadow:0 2px 10px rgba(0,0,0,.1)}.header-main{display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;text-decoration:none;color:var(--main-color);font-weight:bold;font-size:24px}.logo-mark{background:var(--main-color);color:#fff;width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:8px;margin-right:10px}.nav a{margin-left:20px;text-decoration:none;color:var(--text-gray);transition:.3s}.nav a:hover,.nav a.active{color:var(--main-color)}.content-area{background:var(--white);padding:40px;border-radius:15px;box-shadow:0 4px 15px rgba(0,0,0,.05);line-height:1.8;font-size:18px}.info-block{background:var(--bg-light);border-left:5px solid var(--main-color);padding:20px;margin-bottom:30px;font-style:italic;text-align:center}.article-text p{margin-bottom:20px;text-align:justify}.highlight-box{background:#fff5f5;border:1px solid #feb2b2;padding:20px;border-radius:10px;color:var(--error-red);margin-top:30px;font-weight:500;text-align:center}.important-note{background:#fff9e6;border:1px solid #ffeeba;padding:20px;border-radius:10px;margin:30px 0;border-left:5px solid var(--warning-yellow)}.danger-list li{position:relative;padding:15px 15px 15px 40px;margin-bottom:15px;background:#fff5f5;border-radius:8px;border-left:4px solid var(--error-red);list-style:none}.danger-list li::before{content:"⚠️";position:absolute;left:10px;top:12px}.table-wrapper{overflow-x:auto;margin-bottom:30px}.exercise-table{width:100%;border-collapse:collapse;font-family:'Outfit',sans-serif;font-size:16px;min-width:600px}.exercise-table th{background-color:#f4f7fa;color:var(--main-color);text-align:left;padding:12px;border-bottom:2px solid var(--main-color)}.exercise-table td{padding:12px;border-bottom:1px solid #eee;vertical-align:top}.site-footer{text-align:center;padding:40px 0;color:var(--text-gray)}.footer-logo{display:block;font-weight:bold;color:var(--main-color);font-size:20px}#backToTop{display:none;position:fixed;bottom:30px;right:30px;width:50px;height:50px;background:var(--main-color);color:#fff;border-radius:50%;text-align:center;line-height:50px;text-decoration:none;box-shadow:0 4px 15px rgba(0,0,0,.2);z-index:999;transition:all .3s ease}