:root {
            --primary-color: #2563eb;
            --primary-dark: #1d4ed8;
            --secondary-color: #7c3aed;
            --accent-color: #06b6d4;
            --success-color: #10b981;
            --warning-color: #f59e0b;
            --error-color: #ef4444;
            --gray-50: #f8fafc;
            --gray-100: #f1f5f9;
            --gray-200: #e2e8f0;
            --gray-300: #cbd5e1;
            --gray-400: #94a3b8;
            --gray-500: #64748b;
            --gray-600: #475569;
            --gray-700: #334155;
            --gray-800: #1e293b;
            --gray-900: #0f172a;
            --white: #ffffff;
            --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
            --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
            --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
            --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
            --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
            --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
            --border-radius: 12px;
            --border-radius-lg: 16px;
            --border-radius-xl: 20px;
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: rgb(37, 60, 106);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 10px;
            line-height: 1.6;
            color: var(--gray-800);
            position: relative;
            overflow-x: hidden;
        }

        /* Animação de fundo */
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            animation: float 20s ease-in-out infinite;
        }

        @keyframes float {

            0%,
            100% {
                transform: translateY(0px) rotate(0deg);
            }

            33% {
                transform: translateY(-10px) rotate(0.5deg);
            }

            66% {
                transform: translateY(10px) rotate(-0.5deg);
            }
        }

        .container {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            border-radius: var(--border-radius-xl);
            box-shadow: var(--shadow-2xl);
            padding: 20px;
            max-width: 700px;
            width: 100%;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.3);
            position: relative;
            overflow: hidden;
        }

        .container::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: #1d4ed8;
            border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
        }

        .header {
            margin-bottom: 20px;
        }

        .logo h1 {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--gray-800);
            margin-bottom: 8px;
        }

        .subtitle {
            font-size: 1.1rem;
            color: var(--gray-600);
            margin-bottom: 4px;
        }

        .institution {
            font-size: 0.9rem;
            color: var(--gray-500);
            font-weight: 600;
            margin-bottom: 16px;
        }

        .description {
            font-size: 1rem;
            color: var(--gray-600);
            margin-bottom: 32px;
        }

        .links-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }

        .link-card {
            background: var(--white);
            border-radius: var(--border-radius-lg);
            padding: 24px;
            text-decoration: none;
            color: var(--gray-800);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
            border: 2px solid var(--gray-100);
            cursor: pointer;
            display: block;
            box-shadow: var(--shadow);
        }

        .link-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            opacity: 0;
            transition: all 0.3s ease;
            z-index: -1;
        }

        .link-card:hover {
            transform: translateY(-8px) scale(1.02);
            box-shadow: var(--shadow-xl);
            border-color: var(--primary-color);
        }

        .link-card:hover::before {
            opacity: 0.05;
        }

        .link-card:hover .card-icon {
            transform: scale(1.1);
            color: var(--primary-color);
        }

        .link-card:hover .card-title {
            color: var(--primary-color);
        }

        .link-card:active {
            transform: translateY(-4px) scale(1.01);
        }

        .card-icon {
            font-size: 2.5rem;
            margin-bottom: 16px;
            display: block;
            color: var(--gray-600);
            transition: all 0.3s ease;
        }

        .card-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--gray-800);
            transition: all 0.3s ease;
        }

        .card-description {
            font-size: 0.9rem;
            color: var(--gray-600);
            line-height: 1.5;
            font-weight: 400;
        }

        .footer {
            text-align: center;
            color: var(--gray-500);
            font-size: 0.875rem;
            padding-top: 24px;
            border-top: 1px solid var(--gray-200);
        }

        .footer .main-text {
            font-weight: 600;
            color: var(--gray-700);
            margin-bottom: 4px;
        }

        .footer .sub-text {
            color: var(--gray-500);
            font-size: 0.8rem;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .container {
                padding: 20px 15px;
                margin: 16px;
            }

            .logo h1 {
                font-size: 2.25rem;
            }

            .description {
                font-size: 1rem;
            }

            .links-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .institution {
                font-size: 0.8rem;
                color: var(--gray-500);
                font-weight: 600;
                margin-bottom: 16px;
            }

            .description {
                font-size: 0.7rem;
                color: var(--gray-600);
                margin-bottom: 32px;
            }
        }

        @media (max-width: 480px) {
            body {
                padding: 16px;
            }

            .container {
                padding: 20px 15px;
            }

            .logo h1 {
                font-size: 1.875rem;
            }

            .card-title {
                font-size: 1.1rem;
            }
        }

        /* Animações */
        .container {
            animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .link-card {
            animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1);
            animation-fill-mode: both;
        }

        .link-card:nth-child(1) {
            animation-delay: 0.1s;
        }

        .link-card:nth-child(2) {
            animation-delay: 0.2s;
        }

        .link-card:nth-child(3) {
            animation-delay: 0.3s;
        }

        .link-card:nth-child(4) {
            animation-delay: 0.4s;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Loading states */
        .link-card.loading {
            pointer-events: none;
            opacity: 0.7;
        }

        .link-card.loading::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 20px;
            height: 20px;
            margin: -10px 0 0 -10px;
            border: 2px solid var(--gray-300);
            border-top-color: var(--primary-color);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        /* Accessibility */
        .link-card:focus {
            outline: 2px solid var(--primary-color);
            outline-offset: 2px;
        }

        @media (prefers-reduced-motion: reduce) {

            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }

        /* Print styles */
        @media print {
            body {
                background: white;
            }

            .container {
                box-shadow: none;
                border: 1px solid var(--gray-300);
            }
        }