:root {
            --primary-color: #334D6C;
            --secondary-color: #2c3e50;
            --accent-color: #F97316;
            --light-bg: #f8f9fa;
            --text-color: #333;
            --border-color: #e0e0e0;
        }

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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: var(--light-bg);
            color: var(--text-color);
            line-height: 1.6;
        }

        .convention-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 20px;
        }

        /* Header Section */
        .convention-header {
            text-align: center;
            /* margin-bottom: 20px; */
            margin: 30px;
            padding: 40px 50px;
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            border-radius: 15px;
            position: relative;
            overflow: hidden;
        }

        .convention-header::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" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.1)"/></svg>');
            background-size: cover;
        }

        .convention-date {
            font-size: 1.2rem;
            opacity: 0.9;
            margin-bottom: 15px;
            position: relative;
        }

        .convention-title {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 20px;
            position: relative;
        }

        .convention-subtitle {
            font-size: 1.3rem;
            opacity: 0.9;
            max-width: 800px;
            margin: 0 auto;
            position: relative;
        }

        /* Content Section */
        .convention-content {
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            padding: 50px;
            margin-bottom: 40px;
        }

        .content-section {
            margin-bottom: 40px;
        }

        .content-section:last-child {
            margin-bottom: 0;
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 25px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--accent-color);
            display: inline-block;
        }

        .convention-text {
            font-size: 1.1rem;
            line-height: 1.8;
            margin-bottom: 25px;
            text-align: justify;
        }

        .signature-parties {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin: 30px 0;
        }

        .party {
            background: var(--light-bg);
            padding: 25px;
            border-radius: 10px;
            border-left: 4px solid var(--primary-color);
        }

        .party-title {
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 10px;
            font-size: 1.2rem;
        }

        .party-representative {
            font-style: italic;
            color: var(--secondary-color);
        }

        /* Contributors Section */
        .contributors-section {
            background: var(--light-bg);
            padding: 30px;
            border-radius: 10px;
            margin: 30px 0;
        }

        .contributors-title {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--primary-color);
            margin-bottom: 20px;
            text-align: center;
        }

        .contributors-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
        }

        .contributor {
            text-align: center;
            padding: 20px;
            background: white;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            transition: transform 0.3s ease;
        }

        .contributor:hover {
            transform: translateY(-5px);
        }

        .contributor-role {
            font-weight: 600;
            color: var(--accent-color);
            margin-bottom: 8px;
            font-size: 0.9rem;
        }

        .contributor-name {
            font-weight: 700;
            color: var(--secondary-color);
            margin-bottom: 5px;
        }

        .contributor-institution {
            font-size: 0.9rem;
            color: #666;
        }

        /* Axes Section */
        .axes-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin-top: 30px;
        }

        .axe-item {
            background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
            padding: 25px;
            border-radius: 10px;
            border-left: 4px solid var(--accent-color);
            transition: all 0.3s ease;
        }

        .axe-item:hover {
            transform: translateX(10px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }

        .axe-icon {
            font-size: 2rem;
            color: var(--accent-color);
            margin-bottom: 15px;
        }

        .axe-title {
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 10px;
            font-size: 1.1rem;
        }

        /* Photos Section */
        .photos-section {
            margin: 50px 0;
        }

        .photos-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin-top: 30px;
        }

        .photo-item {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            aspect-ratio: 4/3;
        }

        .photo-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.15);
        }

        .photo-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .photo-item:hover .photo-img {
            transform: scale(1.1);
        }

        .photo-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(0,0,0,0.8));
            color: white;
            padding: 20px;
            transform: translateY(100%);
            transition: transform 0.3s ease;
        }

        .photo-item:hover .photo-caption {
            transform: translateY(0);
        }

        .photo-title {
            font-weight: 700;
            margin-bottom: 5px;
            font-size: 1rem;
        }

        .photo-description {
            font-size: 0.9rem;
            opacity: 0.9;
        }

        /* Footer Section */
        .convention-footer {
            text-align: center;
            padding: 40px;
            background: var(--primary-color);
            color: white;
            border-radius: 15px;
            margin-top: 50px;
        }

        .thanks-text {
            font-size: 1.2rem;
            font-style: italic;
            margin-bottom: 20px;
        }

        .institutions {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 20px;
        }

        .institution-logo {
            height: 60px;
            opacity: 0.8;
            transition: opacity 0.3s ease;
        }

        .institution-logo:hover {
            opacity: 1;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .convention-container {
                padding: 20px 15px;
            }

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

            .convention-title {
                font-size: 2rem;
            }

            .convention-subtitle {
                font-size: 1.1rem;
            }

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

            .signature-parties {
                grid-template-columns: 1fr;
                gap: 20px;
            }

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

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

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

            .convention-text {
                font-size: 1rem;
            }

            .section-title {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 480px) {
            .convention-title {
                font-size: 1.6rem;
            }

            .convention-content {
                padding: 20px 15px;
            }

            .party {
                padding: 20px;
            }

            .contributor {
                padding: 15px;
            }

            .axe-item {
                padding: 20px;
            }

            .institutions {
                gap: 20px;
            }

            .institution-logo {
                height: 40px;
            }
        }