.advance-learning-system {
            max-width: 1400px;
            margin: 0 auto;
            padding: 20px 0;
        }

        .advance-learing-section.container {
            background: linear-gradient(135deg, #ffffff 0%, #F6E6C5 100%);
            border-radius: 16px;
            padding: 30px 25px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 15px 30px rgba(0,0,0,0.08);
        }

        .advance-learing-section.container::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(0,0,0,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
            opacity: 0.5;
        }

        .advance-learning-title {
            /* text-align: center; */
            margin-bottom: 30px;
            position: relative;
            z-index: 2;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: #333333;
            margin-bottom: 12px;
            line-height: 1.1;
            text-shadow: 0 2px 8px rgba(0,0,0,0.1);
        }

        .circle-word {
            position: relative;
            display: inline-block;
            color: #D4A574;
        }

        .circle-word::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 120%;
            height: 6px;
            background: linear-gradient(90deg, #D4A574, #F6E6C5);
            border-radius: 50px;
            animation: glow 2s ease-in-out infinite alternate;
        }

        @keyframes glow {
            from { box-shadow: 0 0 10px rgba(212, 165, 116, 0.5); }
            to { box-shadow: 0 0 20px rgba(212, 165, 116, 0.8); }
        }

        .advance-learning-title p {
            font-size: 1rem;
            color: #666666;
            font-weight: 400;
            text-shadow: none;
        }

        .vertical-tabs {
            display: flex;
            gap: 25px;
            align-items: stretch;
            position: relative;
            z-index: 2;
        }

        .tabs-menu {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 320px;
        }

        .advance-tab-btn {
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(212, 165, 116, 0.2);
            border-radius: 12px;
            padding: 16px;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
        }

        .advance-tab-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(212, 165, 116, 0.1), transparent);
            transition: left 0.5s;
        }

        .advance-tab-btn:hover::before {
            left: 100%;
        }

        .advance-tab-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.08);
            border-color: rgba(212, 165, 116, 0.4);
            background: rgba(255, 255, 255, 0.9);
        }

        .advance-tab-btn.active {
            background: rgba(246, 230, 197, 0.8);
            border-color: rgba(212, 165, 116, 0.5);
            transform: translateY(-1px);
            box-shadow: 0 6px 15px rgba(0,0,0,0.08);
        }

        .vertical-tab-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: #333333;
            margin-bottom: 6px;
            text-shadow: none;
        }

        .vertical-tab-subtitle {
            font-size: 0.85rem;
            color: #666666;
            line-height: 1.5;
            text-shadow: none;
        }

        .tabs-content {
            flex: 2;
            position: relative;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.08);
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(212, 165, 116, 0.2);
            min-height: 320px;
        }

        .tab-pane {
            display: none;
            position: relative;
            width: 100%;
            height: 100%;
        }

        .tab-pane.active {
            display: block;
            animation: fadeInScale 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        @keyframes fadeInScale {
            0% {
                opacity: 0;
                transform: scale(0.95);
            }
            100% {
                opacity: 1;
                transform: scale(1);
            }
        }

        .tab-pane img {
            width: 100%;
            height: 100%;
            min-height: 320px;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.3s ease;
            display: block;
        }

        .tab-pane:hover img {
            transform: scale(1.02);
        }

        /* Fallback for images that fail to load */
        .tab-pane.image-error::after {
            content: attr(data-title);
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: linear-gradient(135deg, #ffffff 0%, #F6E6C5 100%);
            color: #D4A574;
            padding: 25px 35px;
            border-radius: 12px;
            font-size: 1.3rem;
            font-weight: 600;
            text-align: center;
            box-shadow: 0 8px 20px rgba(0,0,0,0.08);
            backdrop-filter: blur(10px);
            border: 2px solid rgba(212, 165, 116, 0.3);
        }

        .tab-pane.image-error[data-title="Flash Cards"]::after {
            content: "Flash Cards";
            background: linear-gradient(135deg, #ffffff 0%, #F6E6C5 100%);
            color: #D4A574;
        }

        .tab-pane.image-error[data-title="Mind Map"]::after {
            content: "Mind Map";
            background: linear-gradient(135deg, #F6E6C5 0%, #ffffff 100%);
            color: #D4A574;
        }

        .tab-pane.image-error[data-title="Scenario-Based Learning"]::after {
            content: "Scenario-Based Learning";
            background: linear-gradient(135deg, #ffffff 0%, #F6E6C5 100%);
            color: #D4A574;
        }

        .tab-pane.image-error[data-title="10-Min Summary"]::after {
            content: "10-Min Summary";
            background: linear-gradient(135deg, #F6E6C5 0%, #ffffff 100%);
            color: #D4A574;
        }

        .placeholder-content {
            min-height: 320px;
            position: relative;
            width: 100%;
            height: 100%;
        }

        @media (max-width: 968px) {
            .vertical-tabs {
                flex-direction: column;
                gap: 20px;
            }

            .tabs-menu {
                max-width: none;
            }

            .section-title {
                font-size: 1.8rem;
            }

            .advance-learing-section.container {
                padding: 25px 18px;
            }
        }

        @media (max-width: 640px) {
            .section-title {
                font-size: 1.6rem;
            }

            .advance-tab-btn {
                padding: 14px;
            }

            .vertical-tab-title {
                font-size: 1rem;
            }

            .vertical-tab-subtitle {
                font-size: 0.8rem;
            }
        }