* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Open Sans', sans-serif;
            background: #FFFFFF;
            color: #403E3D;
            line-height: 1.6;
        }

        /* Header with Diagonal Stripe Pattern */
        .header-stripe {
            background: linear-gradient(135deg, #000000 0%, #1a1a1a 50%, #000000 100%);
            position: relative;
            overflow: hidden;
            padding: 60px 40px;
            color: white;
        }

        .header-stripe::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: repeating-linear-gradient(
                45deg,
                transparent,
                transparent 35px,
                rgba(255, 255, 255, 0.03) 35px,
                rgba(255, 255, 255, 0.03) 70px
            );
            pointer-events: none;
        }

        .header-content {
            position: relative;
            z-index: 1;
            max-width: 1400px;
            margin: 0 auto;
        }

        .header-logo {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }

        .logo-text {
            font-size: 24px;
            font-weight: 700;
            color: #E64B3C;
            letter-spacing: 1px;
        }

        .header-title {
            font-size: 48px;
            font-weight: 700;
            margin: 0 0 10px 0;
            color: white;
            letter-spacing: -0.5px;
        }

        .header-subtitle {
            font-size: 18px;
            font-weight: 400;
            margin: 0;
            color: rgba(255, 255, 255, 0.85);
            letter-spacing: 0.3px;
        }

        /* Main Container */
        .updates-container {
            display: flex;
            max-width: 1400px;
            margin: 0 auto;
            min-height: calc(100vh - 200px);
        }

        /* Sidebar Styles */
        .updates-sidebar {
            width: 280px;
            background: #F8F8F8;
            border-right: 1px solid #E0E0E0;
            padding: 40px 0;
            position: sticky;
            top: 0;
            height: 100vh;
            overflow-y: auto;
        }

        .sidebar-header {
            padding: 0 20px 20px 20px;
            border-bottom: 2px solid #E64B3C;
            margin-bottom: 20px;
        }

        .sidebar-header h2 {
            font-size: 16px;
            font-weight: 700;
            color: #403E3D;
            margin: 0;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .version-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            padding: 0;
            margin: 0;
            list-style: none;
        }

        .version-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 20px;
            background: transparent;
            border: none;
            border-left: 3px solid transparent;
            cursor: pointer;
            transition: all 150ms ease;
            text-align: left;
            font-family: 'Open Sans', sans-serif;
            font-size: 14px;
        }

        .version-item:hover {
            background: rgba(230, 75, 60, 0.05);
            border-left-color: #E64B3C;
        }

        .version-item.active {
            background: rgba(230, 75, 60, 0.1);
            border-left-color: #E64B3C;
        }

        .version-item-content {
            flex: 1;
        }

        .version-number {
            font-size: 16px;
            font-weight: 700;
            color: #403E3D;
            margin-bottom: 4px;
        }

        .version-date {
            font-size: 12px;
            color: #999999;
            font-weight: 400;
        }

        .version-indicator {
            color: #E64B3C;
            flex-shrink: 0;
            margin-left: 10px;
        }

        /* Main Content Area */
        .updates-content {
            flex: 1;
            padding: 60px 60px;
            background: white;
            overflow-y: auto;
        }

        .update-details {
            max-width: 900px;
            margin: 0 auto;
        }

        /* Update Header */
        .update-header {
            margin-bottom: 50px;
            padding-bottom: 30px;
            border-bottom: 2px solid #E0E0E0;
        }

        .update-version {
            font-size: 42px;
            font-weight: 700;
            color: #E64B3C;
            margin: 0 0 10px 0;
            letter-spacing: -0.5px;
        }

        .update-date {
            font-size: 14px;
            color: #999999;
            margin: 0 0 15px 0;
            font-weight: 400;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .update-description {
            font-size: 18px;
            color: #403E3D;
            margin: 0;
            font-weight: 500;
        }

        /* Section Styles */
        .update-section {
            margin-bottom: 50px;
        }

        .section-title {
            font-size: 24px;
            font-weight: 700;
            color: #403E3D;
            margin: 0 0 25px 0;
            padding-bottom: 12px;
            border-bottom: 2px solid #E64B3C;
            display: inline-block;
        }

        /* Notes List */
        .notes-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .note-item {
            display: flex;
            gap: 12px;
            font-size: 16px;
            line-height: 1.6;
            color: #403E3D;
        }

        .note-bullet {
            color: #E64B3C;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* Images Grid */
        .images-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 30px;
            margin: 0;
        }

        .image-figure {
            margin: 0;
            padding: 0;
        }

        .update-image {
            width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
            border: 1px solid #E0E0E0;
            transition: transform 200ms ease, box-shadow 200ms ease;
        }

        .update-image:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        .image-caption {
            font-size: 14px;
            color: #666666;
            margin-top: 12px;
            font-weight: 500;
            line-height: 1.5;
        }

        /* Instructions List */
        .instructions-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .instruction-item {
            display: flex;
            gap: 16px;
            font-size: 16px;
            line-height: 1.6;
            color: #403E3D;
        }

        .instruction-number {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: #E64B3C;
            color: white;
            border-radius: 50%;
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
        }

        .instruction-text {
            flex: 1;
            padding-top: 6px;
        }

        /* Support Section */
        .support-section {
            background: rgba(230, 75, 60, 0.05);
            padding: 24px;
            border-radius: 8px;
            border-left: 4px solid #E64B3C;
        }

        .support-text {
            font-size: 16px;
            line-height: 1.6;
            color: #403E3D;
            margin: 0;
        }

        .support-link {
            color: #E64B3C;
            text-decoration: none;
            font-weight: 600;
            transition: opacity 150ms ease;
        }

        .support-link:hover {
            opacity: 0.8;
            text-decoration: underline;
        }

        /* Responsive Design */
        @media (max-width: 1024px) {
            .updates-container {
                flex-direction: column;
            }

            .updates-sidebar {
                width: 100%;
                height: auto;
                position: relative;
                border-right: none;
                border-bottom: 1px solid #E0E0E0;
                padding: 30px 0;
            }

            .version-list {
                display: grid;
                grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
                gap: 0;
            }

            .version-item {
                flex-direction: column;
                align-items: flex-start;
                border-left: none;
                border-bottom: 2px solid transparent;
                padding: 12px 16px;
            }

            .version-item:hover {
                border-left: none;
                border-bottom-color: #E64B3C;
            }

            .version-item.active {
                border-left: none;
                border-bottom-color: #E64B3C;
            }

            .version-indicator {
                margin-left: 0;
                margin-top: 8px;
            }

            .updates-content {
                padding: 40px 30px;
            }

            .update-version {
                font-size: 32px;
            }

            .header-title {
                font-size: 36px;
            }
        }

        @media (max-width: 768px) {
            .header-stripe {
                padding: 40px 20px;
            }

            .header-title {
                font-size: 28px;
            }

            .header-subtitle {
                font-size: 16px;
            }

            .updates-content {
                padding: 30px 20px;
            }

            .update-header {
                margin-bottom: 30px;
                padding-bottom: 20px;
            }

            .update-version {
                font-size: 28px;
            }

            .section-title {
                font-size: 20px;
            }

            .images-grid {
                grid-template-columns: 1fr;
            }

            .note-item,
            .instruction-item {
                font-size: 15px;
            }

            .update-section {
                margin-bottom: 35px;
            }
        }

        @media (max-width: 480px) {
            .header-stripe {
                padding: 30px 16px;
            }

            .header-title {
                font-size: 24px;
            }

            .header-subtitle {
                font-size: 14px;
            }

            .updates-content {
                padding: 20px 16px;
            }

            .update-version {
                font-size: 24px;
            }

            .section-title {
                font-size: 18px;
            }

            .sidebar-header {
                padding: 0 16px 16px 16px;
            }

            .version-item {
                padding: 12px 16px;
            }

            .version-number {
                font-size: 14px;
            }

            .version-date {
                font-size: 11px;
            }
        }

        /* Scrollbar Styling */
        .updates-sidebar::-webkit-scrollbar,
        .updates-content::-webkit-scrollbar {
            width: 8px;
        }

        .updates-sidebar::-webkit-scrollbar-track,
        .updates-content::-webkit-scrollbar-track {
            background: transparent;
        }

        .updates-sidebar::-webkit-scrollbar-thumb,
        .updates-content::-webkit-scrollbar-thumb {
            background: #D0D0D0;
            border-radius: 4px;
        }

        .updates-sidebar::-webkit-scrollbar-thumb:hover,
        .updates-content::-webkit-scrollbar-thumb:hover {
            background: #B0B0B0;
        }