.category-nav{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;padding-bottom:16px;border-bottom:1px solid var(--gray-200)}.category-btn{background:transparent;border:none;padding:8px 20px;border-radius:40px;cursor:pointer;font-size:0.85rem;transition:all 0.2s;color:var(--gray-600);display:inline-flex;align-items:center;gap:6px}.category-btn i{font-size:0.85rem}.category-btn:hover{background:var(--gray-100);color:var(--gray-800)}.category-btn.active{background:var(--primary-color);color:white}.stats-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-bottom:30px}.stat-card{background:white;border-radius:20px;padding:20px;display:flex;align-items:center;gap:16px;border:1px solid var(--gray-200);transition:all 0.3s}.stat-card:hover{transform:translateY(-4px);box-shadow:0 10px 30px rgba(0,0,0,0.1)}.stat-icon{width:50px;height:50px;background:linear-gradient(135deg, #e0e7ff, #f0f4ff);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--primary-color)}.stat-value{font-size:1.6rem;font-weight:700;color:var(--gray-800)}.stat-label{font-size:0.75rem;color:var(--gray-500)}.extensions-grid{display:grid;grid-template-columns:repeat(auto-fill, minmax(340px, 1fr));gap:20px;margin-bottom:30px}.extension-card{background:white;border-radius:20px;border:1px solid var(--gray-200);overflow:hidden;transition:all 0.3s;position:relative}.extension-card:hover{transform:translateY(-4px);box-shadow:0 15px 40px rgba(0,0,0,0.1)}.extension-header{display:flex;align-items:center;gap:16px;padding:20px;background:linear-gradient(135deg, var(--gray-50), #fafafa);border-bottom:1px solid var(--gray-200)}.extension-icon{width:56px;height:56px;background:white;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px;box-shadow:0 4px 12px rgba(0,0,0,0.08)}.extension-info{flex:1}.extension-name{font-size:1.1rem;font-weight:700;margin-bottom:4px}.extension-rating{display:flex;align-items:center;gap:8px;font-size:0.75rem;color:var(--gray-500)}.stars{color:#fbbf24;letter-spacing:2px}.extension-body{padding:16px 20px}.extension-desc{font-size:0.85rem;color:var(--gray-600);line-height:1.5;margin-bottom:12px}.extension-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}.tag{background:var(--gray-100);padding:4px 10px;border-radius:20px;font-size:0.65rem;color:var(--gray-600)}.extension-stats{display:flex;gap:16px;font-size:0.7rem;color:var(--gray-500);margin-bottom:16px}.install-btn{width:100%;padding:10px;background:var(--primary-color);color:white;border:none;border-radius:40px;cursor:pointer;font-size:0.85rem;font-weight:500;transition:all 0.2s;display:flex;align-items:center;justify-content:center;gap:8px}.install-btn:hover{background:var(--primary-dark);transform:scale(1.02)}.hot-badge{position:absolute;top:12px;right:12px;background:#fef3c7;color:#92400e;padding:4px 10px;border-radius:20px;font-size:0.65rem;font-weight:500}.new-badge{position:absolute;top:12px;right:12px;background:#d1fae5;color:#065f46;padding:4px 10px;border-radius:20px;font-size:0.65rem;font-weight:500}.load-more{text-align:center;margin:30px 0}.load-more-btn{background:var(--gray-100);border:1px solid var(--gray-300);padding:12px 32px;border-radius:40px;cursor:pointer;font-size:0.9rem;transition:all 0.2s}.load-more-btn:hover{background:var(--primary-color);border-color:var(--primary-color);color:white}.recommend-section{margin:40px 0 30px}.hot-extensions{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-top:20px}.hot-item{background:white;border-radius:16px;padding:16px;display:flex;align-items:center;gap:14px;border:1px solid var(--gray-200);transition:all 0.2s;cursor:pointer}.hot-item:hover{border-color:var(--primary-color);transform:translateX(4px)}.hot-rank{width:32px;height:32px;background:linear-gradient(135deg, #f59e0b, #f97316);border-radius:10px;display:flex;align-items:center;justify-content:center;color:white;font-weight:700;font-size:0.9rem}.hot-name{flex:1;font-weight:500}.hot-users{font-size:0.7rem;color:var(--gray-400)}.store-grid{display:grid;grid-template-columns:repeat(3, 1fr);gap:20px;margin-top:20px}.store-card{display:flex;flex-direction:column;align-items:center;padding:24px;background:white;border-radius:20px;text-decoration:none;border:1px solid var(--gray-200);transition:all 0.3s}.store-card i{font-size:40px;margin-bottom:12px}.store-card span{font-weight:600;margin-bottom:6px;color:var(--gray-800)}.store-card small{font-size:0.7rem;color:var(--gray-500)}.store-card.chrome i{color:#4285F4}.store-card.firefox i{color:#FF7139}.store-card.edge i{color:#0078D7}.store-card:hover{transform:translateY(-4px);box-shadow:0 10px 30px rgba(0,0,0,0.1)}.guide-steps{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-top:20px}.step{display:flex;gap:16px;align-items:flex-start}.step-number{width:40px;height:40px;background:var(--primary-color);border-radius:50%;display:flex;align-items:center;justify-content:center;color:white;font-weight:700;flex-shrink:0}.step-content h4{font-size:0.9rem;margin-bottom:4px}.step-content p{font-size:0.75rem;color:var(--gray-500)}@media (max-width:900px){.stats-grid{grid-template-columns:repeat(2, 1fr)}.hot-extensions{grid-template-columns:repeat(2, 1fr)}.store-grid{grid-template-columns:1fr}.guide-steps{grid-template-columns:repeat(2, 1fr)}}@media (max-width:600px){.extensions-grid{grid-template-columns:1fr}.hot-extensions{grid-template-columns:1fr}.guide-steps{grid-template-columns:1fr}}