.container{margin:0 auto;max-width:1600px}header{color:#2c5aa0;margin-bottom:40px;text-align:center}header h1{font-size:2.8rem;margin-bottom:10px}header p{font-size:1.2rem;margin:0 auto;max-width:700px;opacity:.9}.pricing-container{gap:25px;margin-top:30px}.billing-cycle-toggle,.pricing-container{display:flex;flex-wrap:wrap;justify-content:center}.billing-cycle-toggle{align-items:center;gap:14px;margin:30px 0 10px}.billing-cycle-switch{background:hsla(0,0%,100%,.95);border:1px solid #cbd5e1;border-radius:999px;box-shadow:0 4px 12px rgba(0,0,0,.08);display:inline-flex;padding:4px}.billing-cycle-switch button{background:transparent;border:none;border-radius:999px;color:#475569;cursor:pointer;font-size:.95rem;font-weight:600;min-width:100px;padding:8px 22px;transition:all .2s ease}.billing-cycle-switch button.active{background:#4a7fd4;box-shadow:0 2px 6px rgba(74,127,212,.4);color:#fff}.billing-cycle-switch button:not(.active):hover{background:rgba(74,127,212,.08);color:#1e3d72}.billing-yearly-badge{background:#fff3e0;border:1px solid #ffd54f;border-radius:12px;color:#e68900;font-size:.85rem;font-weight:600;padding:4px 12px}.current-plan-badge{background:#16a34a;border-radius:8px;color:#fff;display:inline-block;font-size:.78rem;font-weight:600;margin-left:8px;padding:4px 10px;vertical-align:middle}.btn.btn-subscribe{background:#16a34a}.btn.btn-subscribe:hover{background:#0f7c3a}.btn.btn-manage{background:#1e3d72}.btn.btn-manage:hover{background:#0d1a52}.plan-price.is-switching{opacity:.4;transition:opacity .18s ease}.pricing-card{background:hsla(0,0%,100%,.95);border-radius:15px;box-shadow:0 10px 30px rgba(0,0,0,.2);overflow:hidden;padding:30px;position:relative;transition:transform .3s ease,box-shadow .3s ease;width:280px}.pricing-card:hover{box-shadow:0 15px 35px rgba(0,0,0,.3);transform:translateY(-10px)}.pricing-card.popular{border:3px solid #ff9800;transform:scale(1.05)}.pricing-card.popular:hover{transform:scale(1.05) translateY(-10px)}.popular-tag{background:#ff9800;color:#fff;font-size:.8rem;font-weight:700;padding:5px 30px;position:absolute;right:-30px;top:15px;transform:rotate(45deg)}.plan-name{color:#4a7fd4;font-size:2rem;font-weight:600;margin-bottom:15px}.plan-price{color:#b21f1f;font-size:1.8rem;font-weight:600;margin-bottom:20px}.price-period{color:#777;font-size:1rem;font-weight:400}.price-discount{background:#fff3e0;border-radius:6px;color:#ff9800;font-size:.9rem;font-weight:600;margin-bottom:15px;padding:8px 12px;text-align:center}.plan-description{color:#666;font-size:.95rem;line-height:1.5;margin-bottom:25px}.features-list{list-style:none;margin-bottom:30px}.features-list li{align-items:center;border-bottom:1px dashed #eee;display:flex;padding:8px 0}.features-list li i{color:#4caf50;flex-shrink:0;font-size:.9rem;margin-right:10px}.features-list li.highlight-feature{background:#fff9e6;border:1px solid #ffd54f;border-radius:6px;margin:8px 0;padding:10px 12px}.features-list li.highlight-feature i.fa-star{color:#ff9800}.btn{background:#4a7fd4;border:none;border-radius:8px;color:#fff;cursor:pointer;display:block;font-size:1.1rem;font-weight:600;padding:12px;text-align:center;transition:background .3s ease;width:100%}.btn:hover{background:#0d1a52}.btn.popular{background:#ff9800}.btn.popular:hover{background:#e68900}.comparison-table{background:hsla(0,0%,100%,.95);border-radius:15px;box-shadow:0 10px 30px rgba(0,0,0,.2);margin-top:50px;overflow-x:auto;padding:30px}.comparison-table h2{color:#1a2a6c;font-size:2rem;margin-bottom:25px;text-align:center}table{border-collapse:collapse;width:100%}td,th{border-bottom:1px solid #eee;padding:15px;text-align:center}th{background-color:#1e3d72;color:#fff;font-weight:600}tr:nth-child(2n){background-color:#f9f9f9}.feature-name{font-weight:600;text-align:left}.table-note{color:#777;font-size:.85rem;margin-top:15px;padding-left:5px;text-align:left}td br{content:"";display:block;margin-top:4px}td{line-height:1.6}.fa-check{color:#4caf50}.fa-times{color:#f44336}.fa-info-circle{color:#2196f3}.fa-star{color:#ff9800}.contact-section{background:#1e3d72;border-radius:15px;color:#fff;margin-top:50px;padding:30px;text-align:center}.contact-section h2{margin-bottom:20px}.contact-btn{background:#fff;border-radius:8px;color:#1a2a6c;display:inline-block;font-weight:600;margin-top:15px;padding:12px 30px;text-decoration:none;transition:all .3s ease}.contact-btn:hover{background:#f0f0f0;transform:translateY(-3px)}.academic-note{margin-bottom:30px;margin-top:50px;text-align:center}.academic-note-content{background:hsla(0,0%,100%,.95);border-left:4px solid #4a7fd4;border-radius:15px;box-shadow:0 5px 20px rgba(0,0,0,.1);display:block;margin:0 auto;max-width:100%;padding:25px 35px;transition:box-shadow .3s ease;width:100%}.academic-note-content:hover{box-shadow:0 8px 25px rgba(0,0,0,.15)}.academic-note-content p{color:#333;font-size:1rem;line-height:1.6;margin:0}.academic-note-content a{color:#4a7fd4;font-weight:600;text-decoration:none;transition:color .3s ease}.academic-note-content a:hover{color:#1e3d72;text-decoration:underline}.academic-icon{font-size:1.2em;margin-right:8px}@media (max-width:768px){.pricing-card.popular{transform:scale(1)}.pricing-card.popular:hover{transform:translateY(-10px)}.academic-note-content{max-width:100%;padding:20px 25px;width:100%}.academic-note-content p{font-size:.95rem}}