.kr_preface {
    text-align:center;
    font: normal 800 30px "normal";
}
:root {
                --artron-primary: #2A5CAA;
                --artron-secondary: #FF6B6B;
                --artron-bg-gradient: linear-gradient(145deg, #f8f9fa 0%, #e9ecef 100%);
                --artron-card-bg: rgba(255,255,255,0.98);
                --artron-text-dark: #2d3436;
                --artron-text-light: #636e72;
                --artron-shadow: 0 12px 24px -12px rgba(0,0,0,0.15);
            }
      
       .artron-global-hand {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            z-index: 2000; 
            background: var(--artron-card-bg);
            box-shadow: var(--artron-shadow);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0;
            backdrop-filter: blur(12px);
        }

        .artron-global-wrapper {
          display: none;
          overflow:auto;
          height: 100vh;
          top: 72px; 
          z-index: 2000; 
          -webkit-overflow-scrolling: touch;
          overscroll-behavior: contain; 
        } 


        ::-webkit-scrollbar {
          width: 8px;
          background: rgba(255,255,255,0.1);
        }
        ::-webkit-scrollbar-thumb {
          background: var(--artron-text-dark);
          border-radius: 4px;
        }

        .artron-hand-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--artron-primary);
            letter-spacing: -0.5px;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(45deg, var(--artron-primary), var(--artron-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .artron-hand-close {
            font-size: 2.4rem;
            color: var(--artron-text-light);
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            line-height: 0.8;
            position: relative;
            margin-left: auto; 
            right: 20px; /* 向左偏移20px */
        }

        .artron-hand-close:hover {
            color: var(--artron-secondary);
            transform: rotate(90deg) scale(1.1);
        }

        .artron-container-main {
            max-width: 1440px;
            margin: 0 auto;
            padding: 100px 24px 40px;
            
        }

        .artron-video-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            padding: 16px 0;
        }

        .artron-video-card {
            background: var(--artron-card-bg);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--artron-shadow);
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                        box-shadow 0.4s ease;
            border: 1px solid rgba(255,255,255,0.3);
        }

        .artron-video-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 24px 48px -12px rgba(0,0,0,0.2);
        }

        .artron-cover-container {
            position: relative;
            width: 100%;
            padding-top: 56.25%;
            overflow: hidden;
            border-radius: 20px 20px 0 0;
            background: #f0f3f5;
        }
        

        .artron-video-cover {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            cursor: pointer;
            transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .artron-video-card:hover .artron-video-cover {
            transform: scale(1.12);
        }

        .artron-card-info {
            padding: 20px;
            text-align: center;
        }

        .artron-video-title {
            font-size: 1.1rem;
            color: var(--artron-text-dark);
            font-weight: 600;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }

        /* 视频模态框 */
        .artron-video-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.586);
            z-index: 2000;
            backdrop-filter: blur(15px);
        }

        .artron-modal-container {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 90%;
            max-width: 1440px;
            padding: 2px;
            background: linear-gradient(45deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
            border-radius: 16px;
        }

        #artron-main-video {
            width: 100%;
            height: auto;
            border-radius: 14px;
            aspect-ratio: 16/9;
            background: #000;
            box-shadow: 0 24px 48px rgba(0,0,0,0.3);
        }

        .artron-close-btn {
            position: absolute;
            top: -48px;
            right: 0;
            color: rgba(255,255,255,0.9);
            font-size: 2.8rem;
            cursor: pointer;
            transition: all 0.3s ease;
            text-shadow: 0 2px 8px rgba(0,0,0,0.2);
        }

        .artron-close-btn:hover {
            color: var(--artron-secondary);
            transform: scale(1.15);
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .artron-global-hand {
                height: 60px;
                padding:0;
            }
            
            .artron-hand-title {
                font-size: 1.3rem;
            }

            .artron-hand-close {
                right: 10px; 
                font-size: 2rem;
            }
            
            .artron-container-main {
                padding: 84px 16px 32px;
            }
            
            .artron-video-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            
            .artron-modal-container {
                width: 95%;
            }
            
            .artron-close-btn {
                top: -36px;
                font-size: 2.4rem;
            }
        }

        @media (min-width: 1600px) {
            .artron-container-main {
                max-width: 1600px;
            }
            
            .artron-video-grid {
                grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
            }
        }