/* [디자인 시스템 정의] */
        #premium-design-wrapper {
    
            --glass-border: rgba(30, 43, 88, 0.1);
            --nav-height: 200px; /* 고정 네비게이션 높이 */
            
          
            background-color: var(--bg-neutral);
            color: var(--text-main);
            width: 100%;
            overflow: visible !important; 
            position: relative;
            margin: 0 !important;
            padding: 0 !important;
        }

        /* Typography */


        /* Layout: Scrollytelling Track */
        #premium-design-wrapper .scroll-container {
            position: relative;
            display: flex;
            flex-direction: column; 
            /* [수정 지점] 트랙 높이를 250vh -> 350vh로 변경하여 비디오 재생 구간을 더 길게 확보 */
            height: 350vh; 
            background-color: #fdfcff;
            margin: 0 !important;
            padding: 0 !important;
            overflow: visible !important;
        }

        /* Top: Sticky Video Area (Sticks at 200px) */
        #premium-design-wrapper .sticky-graphic {
            position: -webkit-sticky;
            position: sticky;
            top: var(--nav-height); 
            width: 100%;
            height: calc(100vh - var(--nav-height));
            overflow: hidden;
            background-color: #f7f7f7;
            z-index: 10;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 !important;
        }

        /* Video Slogan Overlay */
        #premium-design-wrapper .video-slogan-overlay {
            position: absolute;
            z-index: 15;
            top: 15%;
            left: 0;
            width: 100%;
            text-align: center;
            pointer-events: none;
        }

        #premium-design-wrapper .video-slogan-overlay .slogan-title {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(4px);
            display: inline-block;
            padding: 1rem 2rem;
            border-radius: 4px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        #premium-design-wrapper .sticky-graphic video {
            width: 120%; /* 모바일 120% */
            height: auto;
            max-width: none;
            max-height: 95%;
            object-fit: contain;
            opacity: 1;
            transition: width 0.3s ease;
        }
        
        @media (min-width: 768px) {
            #premium-design-wrapper .sticky-graphic video {
                width: 60%; /* 데스크톱 70% */
            }
            #premium-design-wrapper .video-slogan-overlay {
                top: 5%;
            }
        }

        /* Bottom: Text Content Area - Full Width Background, Fixed Height approx 500px */
        #premium-design-wrapper .scrolling-content {
            width: 100%;
            position: relative;
            z-index: 20;
            /* 세로 약 500px 설정 */
            min-height: 500px;
            margin: 0;
            /* 트랙 하단부에 배치하여 비디오가 충분히 재생된 후 등장 */
            margin-top: auto; 
            /* 투명한 그린 배경색 적용 */
            background-color: rgba(120, 182, 138, 0.2);
            backdrop-filter: blur(10px);
            display: flex;
            align-items: center; /* 세로 중앙 정렬 */
            padding: 4rem 0;
        }

        /* 중앙 정렬용 내부 컨테이너 (1200px) */
        #premium-design-wrapper .scrolling-content-inner {
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* Content Blocks */
        #premium-design-wrapper .content-block {
            margin-bottom: 2.5rem;
            position: relative;
        }

        #premium-design-wrapper .detail-item {
            padding-left: 1.5rem;
            border-left: 4px solid var(--brand-dark);
            margin-top: 1.5rem;
            background: rgba(255, 255, 255, 0.5);
            padding-top: 1.5rem;
            padding-bottom: 1.5rem;
            border-radius: 0 12px 12px 0;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
        }

        #premium-design-wrapper .detail-item h3 {
            color: var(--brand-dark);
            margin-bottom: 0.5rem;
        }
        
        /* Desktop Grid */
        @media (min-width: 768px) {
            #premium-design-wrapper .details-grid {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            #premium-design-wrapper .detail-item {
                margin-top: 0;
            }
        }