.pc-home{min-height:100vh;background-color:#f8f9fa}.pc-header{background:#fff;-webkit-box-shadow:0 2px 10px rgba(0,0,0,.1);box-shadow:0 2px 10px rgba(0,0,0,.1);position:fixed;top:0;left:0;right:0;z-index:1000}.header-container{max-width:1200px;margin:0 auto;padding:0 20px;-webkit-box-pack:justify;-webkit-justify-content:space-between;-ms-flex-pack:justify;justify-content:space-between;height:70px}.header-container,.logo{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-align:center;-webkit-align-items:center;-ms-flex-align:center;align-items:center}.logo-img{width:48px;height:48px;border-radius:50%;-o-object-fit:cover;object-fit:cover;margin-right:12px}.logo-title{font-size:24px;color:#2c3e50;font-weight:700}.nav-menu{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;gap:30px}.nav-item{color:#666;text-decoration:none;font-size:16px;-webkit-transition:color .3s;transition:color .3s}.nav-item.active,.nav-item:hover{color:#3498db}.user-actions{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-align:center;-webkit-align-items:center;-ms-flex-align:center;align-items:center;gap:18px}.user-name{font-size:16px;color:#222;margin-right:2px;letter-spacing:1px}.btn-mine-outline{padding:6px 18px;border:1px solid #3498db;border-radius:20px;background:transparent;color:#3498db;font-size:15px;cursor:pointer;-webkit-transition:all .2s;transition:all .2s;font-weight:500;outline:none}.btn-mine-outline:focus,.btn-mine-outline:hover{background:#3498db;color:#fff;border-color:#3498db}.pc-banner{margin-top:70px;position:relative;height:500px;overflow:hidden}.banner-container,.banner-slider{position:relative;height:100%}.banner-slide{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;-webkit-transition:opacity .5s ease-in-out;transition:opacity .5s ease-in-out}.banner-slide.active{opacity:1}.banner-image{width:100%;height:100%;-o-object-fit:cover;object-fit:cover}.banner-content{position:absolute;top:50%;left:50%;-webkit-transform:translate(-50%,-50%);transform:translate(-50%,-50%);text-align:center;color:#fff;z-index:2}.banner-title{font-size:48px;font-weight:700;margin-bottom:20px;text-shadow:2px 2px 4px rgba(0,0,0,.5)}.banner-desc{font-size:20px;margin-bottom:30px;text-shadow:1px 1px 2px rgba(0,0,0,.5)}.banner-btn{background:#3498db;color:#fff;border:none;padding:15px 30px;font-size:18px;border-radius:5px;cursor:pointer;-webkit-transition:background .3s;transition:background .3s}.banner-btn:hover{background:#2980b9}.banner-dots{position:absolute;bottom:20px;left:50%;-webkit-transform:translateX(-50%);transform:translateX(-50%);display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;gap:10px;z-index:3}.dot{width:12px;height:12px;border-radius:50%;background:hsla(0,0%,100%,.5);cursor:pointer;-webkit-transition:background .3s;transition:background .3s}.dot.active{background:#fff}.banner-arrow{position:absolute;top:50%;-webkit-transform:translateY(-50%);transform:translateY(-50%);background:rgba(0,0,0,.5);color:#fff;border:none;width:50px;height:50px;font-size:24px;cursor:pointer;-webkit-transition:background .3s;transition:background .3s;z-index:3}.banner-arrow:hover{background:rgba(0,0,0,.7)}.banner-arrow.prev{left:20px}.banner-arrow.next{right:20px}.container{max-width:1200px;margin:0 auto;padding:0 20px}.pc-categories{padding:80px 0;background:#fff}.section-header{text-align:center;margin-bottom:60px}.section-title{font-size:36px;color:#2c3e50;margin-bottom:15px}.section-desc{font-size:18px;color:#666;max-width:600px;margin:0 auto}.categories-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px}.category-card{background:#fff;border-radius:10px;padding:30px;-webkit-box-shadow:0 5px 15px rgba(0,0,0,.1);box-shadow:0 5px 15px rgba(0,0,0,.1);cursor:pointer;-webkit-transition:all .3s;transition:all .3s;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-align:center;-webkit-align-items:center;-ms-flex-align:center;align-items:center;gap:20px}.category-card:hover{-webkit-transform:translateY(-5px);transform:translateY(-5px);-webkit-box-shadow:0 10px 25px rgba(0,0,0,.15);box-shadow:0 10px 25px rgba(0,0,0,.15)}.category-icon{width:60px;height:60px;-webkit-flex-shrink:0;-ms-flex-negative:0;flex-shrink:0}.category-icon img{width:100%;height:100%;-o-object-fit:contain;object-fit:contain}.category-content{-webkit-box-flex:1;-webkit-flex:1;-ms-flex:1;flex:1}.category-name{font-size:20px;color:#2c3e50;margin-bottom:8px}.category-desc{color:#666;font-size:14px}.category-arrow{font-size:24px;color:#3498db;font-weight:700}.loading-container{text-align:center;padding:60px 0}.loading-spinner{width:40px;height:40px;border:4px solid #f3f3f3;border-top:4px solid #3498db;border-radius:50%;-webkit-animation:spin 1s linear infinite;animation:spin 1s linear infinite;margin:0 auto 20px}@-webkit-keyframes spin{0%{-webkit-transform:rotate(0deg);transform:rotate(0deg)}to{-webkit-transform:rotate(1turn);transform:rotate(1turn)}}@keyframes spin{0%{-webkit-transform:rotate(0deg);transform:rotate(0deg)}to{-webkit-transform:rotate(1turn);transform:rotate(1turn)}}.pc-features{padding:80px 0;background:#f8f9fa}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:40px}.feature-item{text-align:center;padding:30px 20px;font-size:16px}.feature-icon{font-size:48px;margin-bottom:20px}.feature-item h3{font-size:24px;color:#2c3e50;margin-bottom:15px}.feature-item p{color:#666;line-height:1.6}.pc-footer{background:#2c3e50;color:#fff;padding:60px 0 20px}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:40px;margin-bottom:40px}.footer-section{font-size:16px}.footer-section h3{font-size:20px;margin-bottom:20px;color:#3498db}.footer-section p{line-height:1.6;margin-bottom:10px}.social-links{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;gap:15px}.social-link{color:#fff;text-decoration:none;padding:8px 15px;border:1px solid hsla(0,0%,100%,.3);border-radius:5px;-webkit-transition:all .3s;transition:all .3s}.social-link:hover{background:#3498db;border-color:#3498db}.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid hsla(0,0%,100%,.1);color:#bdc3c7;font-size:13px}