*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #4a6cf7;--secondary-color: #6c757d;--background-color: #0c0e2e;--card-color: rgba(255, 255, 255, .1);--text-color: #f8f9fa;--accent-color: #ff6b6b;--shadow: 0 4px 6px rgba(0, 0, 0, .2);--transition: all .3s ease;--border-radius: 12px;--spacing: 20px;--gradient-bg: linear-gradient(135deg, rgba(12, 14, 46, .8) 0%, rgba(26, 27, 75, .8) 100%);--card-hover-bg: rgba(255, 255, 255, .15)}body.dark-theme{--primary-color: #7b93ff;--secondary-color: #e0e5ec;--background-color: #0c0e2e;--card-color: rgba(255, 255, 255, .15);--text-color: #ffffff;--accent-color: #ff8585;--shadow: 0 4px 6px rgba(0, 0, 0, .2);--gradient-bg: linear-gradient(135deg, rgba(12, 14, 46, .8) 0%, rgba(26, 27, 75, .8) 100%);--card-hover-bg: rgba(255, 255, 255, .25);--input-text-color: #ffffff;--desc-text-color: #f0f4fa}body.light-theme{--primary-color: #4a6cf7;--secondary-color: #6c757d;--background-color: #f8f9fa;--card-color: rgba(255, 255, 255, .6);--text-color: #212529;--accent-color: #ff6b6b;--shadow: 0 4px 6px rgba(0, 0, 0, .1);--gradient-bg: linear-gradient(135deg, rgba(240, 242, 245, .8) 0%, rgba(230, 233, 240, .8) 100%);--card-hover-bg: rgba(255, 255, 255, .8);--input-text-color: #333333;--desc-text-color: #555555}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica Neue,PingFang SC,Hiragino Sans GB,Microsoft YaHei,WenQuanYi Micro Hei,sans-serif;background:url(/images/background.avif) no-repeat center center fixed;background-size:cover;color:var(--text-color);line-height:1.6;transition:var(--transition);min-height:100vh;position:relative;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}body:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background:var(--gradient-bg);opacity:.75;z-index:-1}.container{width:100%;max-width:1680px;margin:0 auto;padding:var(--spacing);padding-top:100px}.datetime{position:relative;margin:0;text-align:center;background:transparent;color:var(--primary-color);text-shadow:0 1px 2px rgba(0,0,0,.2);font-weight:500;z-index:100;min-width:120px;transition:var(--transition);display:inline-block;border-radius:10px}.time{font-size:1.8rem}.date{font-size:.9rem;opacity:.8}header{display:flex;flex-direction:column;align-items:center;margin-bottom:40px;gap:10px;position:relative}.header-top{display:flex;justify-content:center;align-items:center;gap:20px;width:100%}h1{font-size:2.8rem;font-weight:700;background:linear-gradient(90deg,var(--primary-color),#a8b9ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:10px;letter-spacing:-.5px;text-shadow:0 2px 10px rgba(0,0,0,.1);position:relative;z-index:1}body.light-theme h1{background:linear-gradient(90deg,var(--primary-color),#6b8bff);-webkit-background-clip:text;background-clip:text}.accent{color:var(--primary-color)}.search-engines{display:flex;justify-content:center;gap:10px;margin-top:2px;position:relative;z-index:1;width:100%;max-width:700px;margin-left:auto;margin-right:auto;white-space:nowrap;overflow-x:auto;scrollbar-width:thin;scrollbar-color:var(--primary-color) transparent;padding-bottom:5px}.search-engines::-webkit-scrollbar{height:5px}.search-engines::-webkit-scrollbar-track{background:transparent}.search-engines::-webkit-scrollbar-thumb{background-color:var(--primary-color);border-radius:10px}.search-engine-tab{padding:5px 12px;border-radius:20px;background-color:transparent;color:var(--text-color);cursor:pointer;transition:var(--transition);font-size:.9rem;border:none;position:relative;display:inline-block}.search-engine-tab:hover{transform:translateY(-2px);text-shadow:0 0 5px rgba(255,255,255,.5)}.search-engine-tab.active{color:var(--primary-color);font-weight:700;text-shadow:0 0 5px rgba(74,108,247,.5)}.search-box{display:flex;background-color:var(--card-color);border-radius:30px;overflow:visible;box-shadow:var(--shadow);width:100%;max-width:700px;border:1px solid rgba(255,255,255,.1);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:var(--transition);margin:0 auto;position:relative;z-index:2}.search-pointer{position:absolute;bottom:-10px;left:50%;transform:translate(-50%);width:0;height:0;border-left:10px solid transparent;border-right:10px solid transparent;border-top:10px solid var(--card-color);z-index:1;transition:var(--transition)}.search-box:focus-within{box-shadow:0 0 0 3px #4a6cf74d;transform:translateY(-2px)}.search-engine-icon{display:flex;align-items:center;justify-content:center;padding:0 12px}.search-engine-icon img{width:28px;height:28px;object-fit:contain;border-radius:50%;background-color:#ffffffd9;box-shadow:0 2px 4px #0003}#search-input{flex:1;padding:12px 15px 12px 5px;border:none;outline:none;font-size:1rem;background-color:transparent;color:var(--input-text-color)}#search-btn{background-color:var(--primary-color);color:#fff;border:none;padding:0 20px;cursor:pointer;transition:var(--transition);border-radius:0 30px 30px 0}#search-btn:hover{background-color:#3a5bd9}.content-wrapper{display:flex;gap:var(--spacing);margin-top:20px}.sidebar{width:200px;flex-shrink:0;background-color:var(--card-color);border-radius:var(--border-radius);padding:20px;box-shadow:var(--shadow);border:1px solid 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li.active{background-color:var(--primary-color);color:#fff}.loading-category{opacity:.7;font-style:italic}.error-category{color:var(--accent-color);font-style:italic}main{flex:1;display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--spacing)}.category{margin-bottom:30px}.category-title{font-size:1.5rem;margin-bottom:15px;padding-bottom:8px;color:var(--text-color);grid-column:1 / -1;position:relative;display:inline-block;margin-top:20px}.category-title:after{content:"";position:absolute;bottom:0;left:0;width:50px;height:3px;background:var(--primary-color);border-radius:3px}.site-card{background-color:var(--card-color);border-radius:var(--border-radius);padding:20px;box-shadow:var(--shadow);transition:var(--transition);display:flex;flex-direction:column;align-items:center;text-align:center;cursor:pointer;border:1px solid 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rgba(255,255,255,.1)}.footer-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:15px;position:relative}.footer-left{flex:1;text-align:left;display:flex;align-items:center}.footer-center{text-align:center;color:var(--secondary-color);font-size:.9rem;display:flex;flex-direction:row;gap:15px;white-space:nowrap;flex:2;justify-content:center}@media (min-width: 1200px){.footer-content{gap:20px}}.footer-center p{margin:0}.footer-center a{color:var(--secondary-color);text-decoration:none;transition:var(--transition);position:relative;padding:2px 4px;border-radius:4px;display:flex;align-items:center;justify-content:center;gap:4px}.footer-center a i{font-size:.85rem}.footer-center a:hover{color:var(--primary-color);transform:translateY(-2px)}.footer-center a:after{content:"";position:absolute;bottom:-2px;left:0;width:0;height:1px;background-color:var(--primary-color);transition:var(--transition)}.footer-center a:hover:after{width:100%}.footer-right{display:flex;gap:15px;align-items:center}.footer-right a{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:#4a6cf733;color:var(--text-color);transition:var(--transition);position:relative;text-decoration:none}.footer-right a i:before{display:block;line-height:1;font-size:1.2rem}#theme-toggle:hover{background:var(--primary-color);color:#fff;transform:translateY(-3px)}#theme-toggle:before{content:"🌙";font-size:14px}body.light-theme #theme-toggle:before{content:"☀️"}.footer-right a:hover{background:var(--primary-color);color:#fff;transform:translateY(-3px)}footer a:hover{background:var(--accent-color);transform:translateY(-2px)}@media (max-width: 1024px){.content-wrapper{flex-direction:column}.sidebar{width:100%;margin-bottom:20px;position:static}.footer-content{flex-wrap:wrap;justify-content:center;gap:15px}.footer-center{order:1;flex-basis:100%;margin:10px 0}.footer-left{order:0}.footer-right{order:0;flex:1;justify-content:flex-end}.category-list{display:flex;flex-wrap:wrap;gap:10px}.category-list li{margin-bottom:0;flex-grow:1;text-align:center}}@media (max-width: 480px){.footer-content{flex-direction:column;text-align:center;gap:15px}.footer-left{text-align:center;order:0;margin:0}.footer-center{order:2;flex-basis:100%;flex-wrap:wrap;gap:10px;margin:10px 0}.footer-center a{padding:4px 8px;font-size:.85rem;display:inline-flex}.footer-right{order:1;justify-content:center;margin:0}main{grid-template-columns:repeat(2,1fr);gap:10px}h1{font-size:2rem}.container{padding:80px 10px 10px}.site-card{padding:15px 10px}.site-icon{width:40px;height:40px;margin-bottom:10px}.site-name{font-size:.9rem}.site-desc{font-size:.75rem}.category-list{flex-direction:column}.category-list li{width:100%;padding:8px 10px}}@media (max-width: 768px){.header-top{flex-direction:column;align-items:center}.search-box{width:100%;max-width:100%}main{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.system-status{grid-template-columns:repeat(2,1fr)}.datetime{margin-bottom:10px;width:100%;max-width:200px;border-radius:10px}}.default-icon{background-color:var(--card-color);filter:brightness(1.2)}#back-to-top{position:sticky!important;bottom:3rem!important;left:calc(100% - 50px - 3rem)!important;width:50px;height:50px;background-color:var(--card-color);color:var(--text-color);border:none;border-radius:20%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.2rem;box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(20px);transition:var(--transition);z-index:1000}#back-to-top.show{opacity:1;visibility:visible;transform:translateY(0)}#back-to-top:hover{background-color:var(--card-hover-bg);transform:translateY(-5px)}@media (max-width: 768px){#back-to-top{width:40px;height:40px;bottom:20px;left:calc(100% - 60px);font-size:1rem}}