:root{--bg:#fff;--bg-light:#f9f9f9;--bg-header:#f4f4f4;--bg-hover:#e9e9e9;--bg-active:#d9d9d9;--text:#333;--text-light:#616161;--text-dark:#222;--text-heading:#424242;--border:#ddd;--primary:#017cff;--primary-hover:#0060f0;--primary-dark:#0050d0;--shadow:rgba(0,0,0,.1);--shadow-dark:rgba(0,0,0,.5);--link-hover-bg:#e9e9e9;--link-active-bg:#d9d9d9;--btn-bg:#0060f0;--btn-text:#eee;--img-shadow:rgba(0,0,0,.5);--sidebar-bg:linear-gradient(180deg,#1a1c2e,#2d3154);--sidebar-border:rgba(255,255,255,.1);--sidebar-hover:rgba(255,255,255,.1);--sidebar-accent:#667eea;--toggle-bg:linear-gradient(135deg,#667eea,#764ba2);--toggle-shadow:rgba(102,126,234,.3);--modal-bg:linear-gradient(145deg,#fff,#f8f9fa);--modal-text:#4a5568;--modal-accent:linear-gradient(135deg,#667eea,#764ba2);--modal-close-bg:linear-gradient(135deg,#f5f7fa,#e4e8eb);--modal-close-color:#64748b;--search-bg:#fff;--search-border:#ddd}[data-theme="dark"]{--bg:#222831;--bg-light:#2d3748;--bg-header:#222831;--bg-hover:#00ADB5;--bg-active:#009DAE;--text:#E0E0E0;--text-light:#BBB;--text-dark:#EEE;--text-heading:#00ADB5;--border:#00ADB5;--primary:#00ADB5;--primary-hover:#009DAE;--primary-dark:#008b8b;--shadow:rgba(0,0,0,.3);--shadow-dark:rgba(0,0,0,.5);--link-hover-bg:#00ADB5;--link-active-bg:#009DAE;--btn-bg:#2d3748;--btn-text:#eee;--img-shadow:rgba(0,173,181,.75);--sidebar-bg:linear-gradient(180deg,#1a1c2e,#0f1117);--sidebar-border:rgba(0,173,181,.2);--sidebar-hover:rgba(0,173,181,.15);--sidebar-accent:#00ADB5;--toggle-bg:linear-gradient(135deg,#00ADB5,#00d4ff);--toggle-shadow:rgba(0,173,181,.3);--modal-bg:linear-gradient(145deg,#2d3748,#1a202c);--modal-text:#a0aec0;--modal-accent:linear-gradient(135deg,#00ADB5,#00d4ff);--modal-close-bg:linear-gradient(135deg,#374151,#1f2937);--modal-close-color:#9ca3af;--search-bg:#2d3748;--search-border:#00ADB5}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Arial,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:var(--text);background-color:var(--bg)}header{background-color:var(--bg-header);padding:15px}header h1{font-size:2rem;color:var(--text-heading)}.header-container{background-color:var(--bg-header);color:var(--text);padding:15px;display:flex;align-items:center}.header-container img{box-shadow:-8px 5px 10px var(--img-shadow);margin-right:30px;border-radius:50%}.search-container{margin-bottom:20px;position:relative}.search-input{width:100%;padding:10px;font-size:1rem;border:1px solid var(--search-border);border-radius:5px;background:var(--search-bg);color:var(--text)}.search-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 5px rgba(1,124,255,.5)}main{padding:20px;background-color:var(--bg);border-radius:10px;box-shadow:0 0 10px var(--shadow);margin:20px}.link-container{background:var(--bg-light);border:1px solid var(--border);padding:15px;margin-bottom:15px;border-radius:5px;box-shadow:0 2px 5px var(--shadow)}.link-container h2{margin-bottom:10px;color:var(--text-heading)}.link{display:block;background:var(--bg);border:1px solid var(--border);color:var(--text-dark);padding:10px 15px;margin-bottom:10px;border-radius:3px;text-decoration:none}@media(hover:hover){.link:hover{background-color:var(--link-hover-bg);color:var(--text)}}.link:active{background-color:var(--link-active-bg)}.theme-switch,.author-qq-button,.level-calc-button{font-size:12px;background-color:var(--btn-bg);color:var(--btn-text);padding:10px 15px;border:none;border-radius:4px;cursor:pointer;text-decoration:none;display:inline-block}@media(hover:hover){.theme-switch:hover,.author-qq-button:hover,.level-calc-button:hover{background-color:var(--primary-dark);filter:brightness(1.1)}}.back-to-top{position:fixed;bottom:30px;right:30px;background-color:var(--primary);color:#fff;padding:5px 10px;border-radius:5px;cursor:pointer;display:none;z-index:999}.back-to-top.show{display:block}.modal{display:none;position:fixed;z-index:9999;left:0;top:0;width:100%;height:100%;overflow:auto;background:linear-gradient(135deg,rgba(0,0,0,.6),rgba(0,0,0,.8));backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);animation:modalFadeIn .4s ease}.modal-content{background:var(--modal-bg);margin:8% auto;padding:0;border:none;width:90%;max-width:480px;border-radius:20px;animation:modalSlideIn .5s cubic-bezier(.34,1.56,.64,1);position:relative;box-shadow:0 25px 50px -12px rgba(0,0,0,.25);overflow:hidden}.modal-content::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:var(--modal-accent)}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:24px 28px 16px}.modal-header h2{font-size:22px;font-weight:700;background:var(--modal-accent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:0}.modal-body{padding:8px 28px 24px;font-size:15px;line-height:1.8;color:var(--modal-text)}.modal-body p{margin-bottom:14px;display:flex;align-items:flex-start;gap:10px}.modal-body p i{color:var(--sidebar-accent);font-size:14px;margin-top:4px;flex-shrink:0}.modal-body p:last-child{margin-bottom:0}.modal-footer{display:flex;justify-content:center;padding:16px 28px 28px}.close{position:absolute;right:20px;top:20px;width:36px;height:36px;border-radius:50%;background:var(--modal-close-bg);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--modal-close-color);transition:transform .3s}.close:hover{transform:rotate(90deg) scale(1.1)}.btn-confirm{background:var(--modal-accent);color:#fff;padding:14px 48px;border:none;border-radius:12px;cursor:pointer;font-size:16px;font-weight:600;box-shadow:0 4px 15px var(--toggle-shadow)}.sidebar{position:fixed;left:calc(-280px - 20px);top:0;width:280px;height:100%;background:var(--sidebar-bg);overflow-x:hidden;overflow-y:auto;transition:left .4s cubic-bezier(.4,0,.2,1),box-shadow .4s;padding:0;z-index:1000;border-right:1px solid var(--sidebar-border)}.sidebar.open{left:0;box-shadow:5px 0 30px rgba(0,0,0,.3)}.sidebar::-webkit-scrollbar{width:6px}.sidebar::-webkit-scrollbar-track{background:rgba(255,255,255,.05)}.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.2);border-radius:3px}.sidebar-header{padding:24px 20px;background:linear-gradient(135deg,rgba(255,255,255,.1),rgba(255,255,255,.05));border-bottom:1px solid var(--sidebar-border);display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:10;backdrop-filter:blur(10px)}.sidebar-title{font-size:18px;font-weight:700;color:#fff;letter-spacing:1px;display:flex;align-items:center;gap:10px}.sidebar-title i{font-size:20px;margin-right:8px}.sidebar .closebtn{width:32px;height:32px;border-radius:8px;background:rgba(255,255,255,.1);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:24px;color:rgba(255,255,255,.7);transition:all .3s}.sidebar .closebtn:hover{background:rgba(239,68,68,.2);color:#ef4444;transform:rotate(90deg)}.sidebar-nav{padding:16px 12px}.sidebar a{padding:14px 18px;text-decoration:none;font-size:15px;color:rgba(255,255,255,.85);display:flex;align-items:center;gap:14px;transition:all .2s;border-radius:12px;margin:4px 0;position:relative;overflow:hidden;font-weight:500}.sidebar a i{font-size:18px;width:24px;text-align:center;color:rgba(255,255,255,.6);transition:all .2s}.sidebar a::before{content:'';position:absolute;left:0;top:0;width:3px;height:100%;background:linear-gradient(180deg,var(--sidebar-accent),#764ba2);border-radius:0 4px 4px 0;transform:scaleY(0);transition:transform .2s}.sidebar a:hover{background:var(--sidebar-hover);color:#fff;transform:translateX(4px)}.sidebar a:hover i{color:var(--sidebar-accent);transform:scale(1.1)}.sidebar a:hover::before{transform:scaleY(1)}.sidebar-divider{height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);margin:16px 20px}.toggle-sidebar-btn{position:fixed;top:50%;left:0;transform:translateY(-50%);width:28px;height:64px;cursor:pointer;background:var(--toggle-bg);border-radius:0 16px 16px 0;display:flex;align-items:center;justify-content:center;z-index:1001;transition:all .3s;box-shadow:4px 0 20px var(--toggle-shadow);border:none;color:#fff;font-size:14px}.toggle-sidebar-btn:hover{width:36px}.toggle-sidebar-btn.open{left:280px}@keyframes modalSlideIn{0%{opacity:0;transform:scale(.9) translateY(-30px)}to{opacity:1;transform:scale(1) translateY(0)}}@keyframes modalFadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeOut{0%{opacity:1;transform:scale(1)}to{opacity:0;transform:scale(.95)}}.fade-out{animation:fadeOut .3s ease forwards}.fade-out .modal-content{animation:modalSlideOut .3s ease forwards}@keyframes modalSlideOut{0%{opacity:1;transform:scale(1) translateY(0)}to{opacity:0;transform:scale(.9) translateY(-20px)}}@media(max-width:768px){header h1{font-size:1.5rem}.modal-content{width:92%;margin:15% auto;border-radius:16px}.modal-header{padding:20px 22px 14px}.modal-header h2{font-size:20px}.modal-body{padding:6px 22px 20px;font-size:14px}.modal-footer{padding:14px 22px 24px}.btn-confirm{padding:12px 40px;font-size:15px}.sidebar{width:260px}.sidebar a{padding:12px 16px;font-size:14px}.toggle-sidebar-btn{height:56px;width:24px}.toggle-sidebar-btn.open{left:260px}}@media(min-width:768px){.category-container{display:flex;flex-wrap:wrap}.link-container{margin:10px;width:calc(33.333% - 20px)}}