:root{--primary-blue:#00A1D6;--primary-pink:#FB7299;--bg-white:#ffffff;--text-dark:#222222;--text-gray:#666666;--border-light:#e7e7e7;--shadow-card:0 2px 8px rgba(0,0,0,0.08);--transition-base:all 0.3s cubic-bezier(0.4,0,0.2,1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue","PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;background-color:#f4f5f7;color:var(--text-dark);line-height:1.6;font-size:14px}body.ui-style-13{background:linear-gradient(135deg,#f4f5f7 0%,#fef5f8 100%)}a{color:var(--primary-blue);text-decoration:none;transition:var(--transition-base)}a:hover{color:var(--primary-pink)}header{background-color:var(--bg-white);box-shadow:0 2px 4px rgba(0,0,0,0.06);position:sticky;top:0;z-index:1000}nav{max-width:1400px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:56px}.logo{font-size:20px;font-weight:700;color:var(--primary-blue);white-space:nowrap}.nav-links{display:flex;list-style:none;gap:8px;flex:1;justify-content:flex-end;align-items:center}.nav-links li{flex-shrink:0}.nav-links a{display:block;padding:8px 16px;color:var(--text-dark);border-radius:20px;transition:var(--transition-base);white-space:nowrap;font-size:14px}.nav-links a:hover,.nav-links a.active{background-color:var(--primary-blue);color:var(--bg-white)}@media (max-width:768px){nav{padding:0 12px;height:50px}.logo{font-size:16px;flex-shrink:0}.nav-links{flex:1 1 0;min-width:0;gap:4px;justify-content:space-between;flex-wrap:nowrap;overflow:hidden}.nav-links li{flex:1 1 0;min-width:0}.nav-links a{padding:6px 8px;font-size:12px;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}}.breadcrumb{max-width:1400px;margin:16px auto;padding:0 20px;font-size:13px;color:var(--text-gray)}.breadcrumb a{color:var(--text-gray)}.breadcrumb a:hover{color:var(--primary-blue)}.breadcrumb span{margin:0 8px;color:var(--border-light)}main{max-width:1400px;margin:0 auto;padding:20px}h1{font-size:28px;font-weight:700;color:var(--text-dark);margin-bottom:16px;line-height:1.3}h2{font-size:22px;font-weight:600;color:var(--text-dark);margin-bottom:16px;line-height:1.4}h3{font-size:18px;font-weight:600;color:var(--text-dark);margin-bottom:12px}p{margin-bottom:12px;line-height:1.7}section{background-color:var(--bg-white);border-radius:12px;padding:24px;margin-bottom:24px;box-shadow:var(--shadow-card)}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:12px;border-bottom:2px solid var(--primary-blue)}.section-title{font-size:20px;font-weight:600;color:var(--text-dark);position:relative;padding-left:12px}.section-title::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:18px;background:linear-gradient(135deg,var(--primary-blue),var(--primary-pink));border-radius:2px}.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}@media (max-width:768px){.video-grid{grid-template-columns:repeat(2,1fr);gap:12px}}@media (max-width:480px){.video-grid{grid-template-columns:1fr}}.video-card{background-color:var(--bg-white);border-radius:8px;overflow:hidden;border:1px solid var(--border-light);transition:var(--transition-base);cursor:pointer}.video-card:hover{transform:translateY(-4px);box-shadow:0 8px 16px rgba(0,161,214,0.15);border-color:var(--primary-blue)}.video-card-cover{width:100%;padding-top:140%;position:relative;background:linear-gradient(135deg,var(--primary-blue) 0%,var(--primary-pink) 100%);overflow:hidden}.video-card-cover::after{content:'▶';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:32px;color:rgba(255,255,255,0.9);transition:var(--transition-base)}.video-card:hover .video-card-cover::after{transform:translate(-50%,-50%) scale(1.2)}.video-card-body{padding:12px}.video-card-title{font-size:14px;font-weight:600;color:var(--text-dark);margin-bottom:6px;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;line-height:1.4}.video-card-meta{font-size:12px;color:var(--text-gray);margin-bottom:6px;display:flex;flex-wrap:wrap;gap:8px}.video-card-meta span{display:inline-block}.video-card-desc{font-size:12px;color:var(--text-gray);line-height:1.5;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.video-card-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.tag{display:inline-block;padding:2px 8px;background-color:rgba(0,161,214,0.1);color:var(--primary-blue);border-radius:10px;font-size:11px;transition:var(--transition-base)}.tag:hover{background-color:var(--primary-blue);color:var(--bg-white)}.detail-container{max-width:1000px;margin:0 auto}.detail-header{background:linear-gradient(135deg,var(--primary-blue),var(--primary-pink));color:var(--bg-white);padding:40px 24px;border-radius:12px;margin-bottom:24px}.detail-header h1{color:var(--bg-white);font-size:32px;margin-bottom:16px}.detail-meta{display:flex;flex-wrap:wrap;gap:16px;font-size:14px}.detail-content{background-color:var(--bg-white);padding:32px;border-radius:12px;box-shadow:var(--shadow-card);margin-bottom:24px}.detail-section{margin-bottom:32px}.detail-section:last-child{margin-bottom:0}.detail-section h2{color:var(--primary-blue);margin-bottom:16px}.detail-summary{line-height:1.8;text-align:justify;color:var(--text-dark);font-size:15px}.detail-review{background-color:#f8f9fa;padding:20px;border-left:4px solid var(--primary-pink);border-radius:4px;line-height:1.8;color:var(--text-dark);font-size:14px}.related-videos{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px}.list-intro{background:linear-gradient(135deg,rgba(0,161,214,0.1),rgba(251,114,153,0.1));padding:24px;border-radius:12px;margin-bottom:24px;border:1px solid var(--border-light)}.list-intro h1{color:var(--primary-blue)}.list-intro p{color:var(--text-gray);font-size:14px;line-height:1.8}.page-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:16px}.page-links a{padding:8px 16px;background-color:var(--bg-white);border:1px solid var(--primary-blue);border-radius:20px;color:var(--primary-blue);font-size:13px;transition:var(--transition-base)}.page-links a:hover{background-color:var(--primary-blue);color:var(--bg-white)}.btn{display:inline-block;padding:10px 24px;background:linear-gradient(135deg,var(--primary-blue),var(--primary-pink));color:var(--bg-white);border-radius:24px;font-size:14px;font-weight:500;border:none;cursor:pointer;transition:var(--transition-base)}.btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,161,214,0.3)}.btn-outline{background:transparent;color:var(--primary-blue);border:2px solid var(--primary-blue)}.btn-outline:hover{background:var(--primary-blue);color:var(--bg-white)}footer{background-color:var(--bg-white);border-top:1px solid var(--border-light);padding:32px 20px;margin-top:40px;text-align:center;color:var(--text-gray);font-size:13px}.back-to-top{position:fixed;bottom:40px;right:40px;width:48px;height:48px;background:linear-gradient(135deg,var(--primary-blue),var(--primary-pink));color:var(--bg-white);border-radius:50%;display:none;align-items:center;justify-content:center;font-size:24px;cursor:pointer;box-shadow:0 4px 12px rgba(0,0,0,0.15);transition:var(--transition-base);z-index:999}.back-to-top:hover{transform:translateY(-4px);box-shadow:0 6px 16px rgba(0,161,214,0.3)}.back-to-top.visible{display:flex}.error-page{text-align:center;padding:80px 20px}.error-page h1{font-size:72px;color:var(--primary-blue);margin-bottom:16px}.error-page p{font-size:18px;color:var(--text-gray);margin-bottom:32px}@media (max-width:768px){main{padding:16px 12px}section{padding:16px;border-radius:8px}h1{font-size:24px}h2{font-size:20px}.detail-header{padding:24px 16px}.detail-header h1{font-size:24px}.detail-content{padding:20px 16px}.related-videos{grid-template-columns:repeat(2,1fr)}.back-to-top{bottom:20px;right:20px;width:40px;height:40px;font-size:20px}}