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

        html, body {
            height: 100%;
            width: 100%;
            font-family: 'Roboto', sans-serif;
        }

        body {
            background-color: #FFFFFF;
            color: #1F3A8A;
            overflow-x: hidden;
        }

        #app {
            width: 100%;
            height: 100%;
            overflow-y: auto;
        }

        :root {
            --coral: #EC8F8D;
            --blue: #1F3A8A;
            --white: #FFFFFF;
            --light-gray: #F8F9FA;
            --dark-gray: #333333;
        }

        .coral-text { color: var(--coral); }
        .blue-text { color: var(--blue); }
        .blue-bg { background-color: var(--blue); }
        .white-text { color: var(--white); }

        /* Header */
        header {
            background-color: var(--white);
            padding: 40px 20px;
            text-align: center;
            border-bottom: 2px solid var(--coral);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: all 0.3s ease;
        }

        header.scrolled {
            background-color: var(--blue);
            padding: 20px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }

        .logo {
            font-size: 32px;
            font-weight: 900;
            color: var(--blue);
            margin-bottom: 8px;
            letter-spacing: 2px;
            transition: all 0.3s ease;
        }

        header.scrolled .logo {
            font-size: 24px;
            color: var(--white);
        }

        .tagline {
            font-size: 12px;
            font-weight: 300;
            color: var(--coral);
            letter-spacing: 3px;
            text-transform: uppercase;
            transition: all 0.3s ease;
        }

        header.scrolled .tagline {
            color: rgba(255,255,255,0.8);
        }

        .nav-container {
            display: flex;
            justify-content: center;
            gap: 80px;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid var(--coral);
            transition: all 0.3s ease;
        }

        header.scrolled .nav-container {
            display: none;
        }

        .nav-section {
            display: flex;
            gap: 30px;
        }

        .nav-link {
            font-size: 12px;
            font-weight: 500;
            color: var(--blue);
            text-decoration: none;
            letter-spacing: 1px;
            text-transform: uppercase;
            cursor: pointer;
            position: relative;
            transition: color 0.3s ease;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--coral);
            transition: width 0.3s ease;
        }

        .nav-link:hover {
            color: var(--coral);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        /* Content Modal */
        .content-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.7);
            z-index: 3000;
            align-items: center;
            justify-content: center;
            padding: 20px;
            overflow-y: auto;
        }

        .content-modal.active {
            display: flex;
        }

        .modal-content {
            background-color: var(--white);
            border-radius: 8px;
            max-width: 900px;
            width: 100%;
            max-height: 85vh;
            overflow-y: auto;
            box-shadow: 0 12px 48px rgba(0,0,0,0.2);
        }

        .modal-header {
            padding: 40px;
            background-color: var(--light-gray);
            border-bottom: 3px solid var(--coral);
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            position: sticky;
            top: 0;
        }

        .modal-header h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--blue);
            margin: 0;
            max-width: 90%;
        }

        .close-modal {
            background: none;
            border: none;
            font-size: 32px;
            cursor: pointer;
            color: var(--coral);
            transition: color 0.3s ease;
        }

        .close-modal:hover {
            color: var(--blue);
        }

        .modal-body {
            padding: 40px;
        }

        .modal-body h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--coral);
            margin: 25px 0 15px 0;
        }

        .modal-body h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--blue);
            margin: 20px 0 12px 0;
        }

        .modal-body p {
            font-size: 14px;
            font-weight: 400;
            color: #333;
            line-height: 1.8;
            margin-bottom: 15px;
        }

        .modal-body ul, .modal-body ol {
            font-size: 14px;
            color: #333;
            line-height: 1.8;
            margin-left: 20px;
            margin-bottom: 15px;
        }

        .modal-body li {
            margin-bottom: 10px;
        }

        .modal-body strong {
            color: var(--blue);
            font-weight: 700;
        }

        .modal-body em {
            color: var(--coral);
            font-style: italic;
        }

        .modal-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
        }

        .modal-body th, .modal-body td {
            border: 1px solid #E0E0E0;
            padding: 12px;
            text-align: left;
        }

        .modal-body th {
            background-color: var(--light-gray);
            font-weight: 700;
            color: var(--blue);
        }

        /* Pages */
        .page {
            display: none;
        }

        .page.active {
            display: block;
            animation: fadeIn 0.5s ease;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        /* Hero Section */
        .hero {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            padding: 100px 60px;
            background: linear-gradient(135deg, var(--white) 0%, #F8F9FA 100%);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: -200px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(236, 143, 141, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            animation: float 6s ease-in-out infinite;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(20px); }
        }

        .hero-content {
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 56px;
            font-weight: 900;
            color: var(--blue);
            line-height: 1.2;
            margin-bottom: 20px;
            animation: slideIn 0.8s ease;
        }

        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateX(-30px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        .hero p {
            font-size: 16px;
            font-weight: 400;
            color: #555;
            line-height: 1.8;
            margin-bottom: 30px;
            animation: slideIn 0.8s ease 0.2s backwards;
        }

        .hero-buttons {
            display: flex;
            gap: 20px;
            animation: slideIn 0.8s ease 0.4s backwards;
        }

        .btn {
            padding: 14px 32px;
            border: none;
            border-radius: 4px;
            font-size: 13px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-family: 'Roboto', sans-serif;
            text-decoration: none;
        }

        .btn-primary {
            background-color: var(--coral);
            color: var(--white);
        }

        .btn-primary:hover {
            background-color: #d97e7c;
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(236, 143, 141, 0.3);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--blue);
            border: 2px solid var(--blue);
        }

        .btn-secondary:hover {
            background-color: var(--blue);
            color: var(--white);
            transform: translateY(-3px);
        }

        .hero-image {
            position: relative;
            z-index: 1;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0,0,0,0.15);
            animation: zoomIn 0.8s ease;
        }

        @keyframes zoomIn {
            from {
                opacity: 0;
                transform: scale(0.95);
            }
            to {
                opacity: 1;
                transform: scale(1);
            }
        }

        .hero-image img {
            width: 100%;
            height: 500px;
            object-fit: cover;
            display: block;
        }

        /* Section Styles */
        section {
            padding: 80px 60px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 800;
            color: var(--blue);
            text-align: center;
            margin-bottom: 15px;
        }

        .section-subtitle {
            font-size: 14px;
            font-weight: 400;
            color: #666;
            text-align: center;
            margin-bottom: 50px;
        }

        .section-divider {
            width: 60px;
            height: 3px;
            background-color: var(--coral);
            margin: 0 auto 50px;
        }

        /* Categories Grid */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-top: 50px;
        }

        .category-card {
            padding: 40px 30px;
            background-color: var(--white);
            border: 2px solid #F0F0F0;
            border-radius: 8px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
        }

        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background-color: var(--coral);
            transform: scaleX(0);
            transition: transform 0.3s ease;
            transform-origin: left;
        }

        .category-card:hover {
            background-color: var(--blue);
            color: var(--white);
            border-color: var(--blue);
            transform: translateY(-8px);
            box-shadow: 0 12px 36px rgba(0,0,0,0.15);
        }

        .category-card:hover::before {
            transform: scaleX(1);
        }

        .category-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--blue);
            margin-bottom: 12px;
        }

        .category-card:hover .category-name {
            color: var(--white);
        }

        .category-divider {
            width: 30px;
            height: 2px;
            background-color: var(--coral);
            margin: 15px auto;
        }

        .category-card:hover .category-divider {
            background-color: var(--white);
        }

        .category-desc {
            font-size: 13px;
            font-weight: 400;
            color: #666;
            line-height: 1.6;
        }

        .category-card:hover .category-desc {
            color: rgba(255,255,255,0.9);
        }

        /* Featured Article Section */
        .featured-section {
            background-color: var(--blue);
            color: var(--white);
        }

        .featured-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .featured-image {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
        }

        .featured-image img {
            width: 100%;
            height: 400px;
            object-fit: cover;
        }

        .featured-content h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--white);
            margin-bottom: 20px;
        }

        .featured-tag {
            font-size: 11px;
            font-weight: 600;
            color: var(--coral);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 15px;
            display: inline-block;
        }

        .featured-content p {
            font-size: 15px;
            font-weight: 400;
            color: rgba(255,255,255,0.95);
            line-height: 1.8;
            margin-bottom: 25px;
        }

        .read-link {
            color: var(--coral);
            text-decoration: none;
            font-weight: 600;
            font-size: 13px;
            text-transform: uppercase;
            letter-spacing: 1px;
            display: inline-block;
            position: relative;
            cursor: pointer;
        }

        .read-link::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--coral);
            transition: width 0.3s ease;
        }

        .read-link:hover::after {
            width: 100%;
        }

        /* Studies Grid */
        .studies-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 50px;
        }

        .study-card {
            background-color: var(--white);
            border-left: 4px solid var(--coral);
            padding: 30px;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }

        .study-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 32px rgba(0,0,0,0.12);
            border-left-width: 6px;
        }

        .study-meta {
            font-size: 11px;
            font-weight: 600;
            color: var(--coral);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .study-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--blue);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .study-date {
            font-size: 12px;
            font-weight: 400;
            color: #999;
            margin-bottom: 15px;
        }

        .study-snippet {
            font-size: 13px;
            font-weight: 400;
            color: #666;
            line-height: 1.6;
            margin-bottom: 15px;
        }

        .study-read {
            font-size: 12px;
            font-weight: 600;
            color: var(--coral);
            text-transform: uppercase;
            cursor: pointer;
            display: inline-block;
        }

        /* Query Submission Section */
        .query-section {
            background-color: var(--blue);
            color: var(--white);
            text-align: center;
            padding: 80px 60px;
        }

        .query-section h2 {
            font-size: 40px;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .query-section p {
            font-size: 16px;
            font-weight: 400;
            margin-bottom: 40px;
            color: rgba(255,255,255,0.95);
        }

        .query-btn {
            background-color: var(--coral);
            color: var(--white);
            padding: 16px 40px;
        }

        .query-btn:hover {
            background-color: #d97e7c;
        }

        /* Data Strip */
        .data-strip {
            background-color: var(--white);
            padding: 50px 60px;
            display: flex;
            justify-content: space-around;
            gap: 40px;
            text-align: center;
        }

        .data-item {
            flex: 1;
        }

        .data-number {
            font-size: 42px;
            font-weight: 900;
            color: var(--coral);
            margin-bottom: 10px;
        }

        .data-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--blue);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* Footer */
        footer {
            background-color: var(--blue);
            color: var(--white);
            padding: 60px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 50px;
            margin-bottom: 40px;
        }

        .footer-section h3 {
            font-size: 14px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 25px;
            color: var(--coral);
        }

        .footer-section p {
            font-size: 13px;
            font-weight: 400;
            color: rgba(255,255,255,0.8);
            line-height: 1.8;
            margin-bottom: 15px;
        }

        .footer-link {
            font-size: 13px;
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            display: block;
            margin-bottom: 12px;
            cursor: pointer;
            transition: color 0.3s ease;
        }

        .footer-link:hover {
            color: var(--coral);
        }

        .subscription-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .sub-input {
            padding: 12px;
            border: 2px solid rgba(255,255,255,0.3);
            background-color: rgba(255,255,255,0.1);
            color: var(--white);
            border-radius: 4px;
            font-family: 'Roboto', sans-serif;
            font-size: 13px;
            transition: all 0.3s ease;
        }

        .sub-input::placeholder {
            color: rgba(255,255,255,0.6);
        }

        .sub-input:focus {
            outline: none;
            border-color: var(--coral);
            background-color: rgba(255,255,255,0.15);
        }

        .sub-buttons {
            display: flex;
            gap: 10px;
        }

        .sub-btn {
            flex: 1;
            padding: 10px;
            border: none;
            background-color: var(--coral);
            color: var(--white);
            border-radius: 4px;
            font-weight: 600;
            font-size: 11px;
            text-transform: uppercase;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .sub-btn:hover {
            background-color: #d97e7c;
            transform: translateY(-2px);
        }

        .sub-btn.secondary {
            background-color: transparent;
            border: 1px solid var(--coral);
        }

        .sub-btn.secondary:hover {
            background-color: var(--coral);
        }

        .sub-message {
            font-size: 12px;
            padding: 10px;
            border-radius: 4px;
            display: none;
            margin-top: 10px;
        }

        .sub-message.success {
            display: block;
            background-color: rgba(76, 175, 80, 0.2);
            color: #81C784;
            border: 1px solid rgba(76, 175, 80, 0.5);
        }

        .sub-message.error {
            display: block;
            background-color: rgba(244, 67, 54, 0.2);
            color: #EF5350;
            border: 1px solid rgba(244, 67, 54, 0.5);
        }

        .footer-divider {
            width: 100%;
            height: 2px;
            background-color: rgba(255,255,255,0.1);
            margin: 40px 0;
        }

        .footer-bottom {
            background-color: var(--white);
            color: var(--blue);
            padding: 20px;
            text-align: center;
            font-size: 12px;
            font-weight: 400;
        }

        /* Toast Notification */
        .toast {
            position: fixed;
            top: 100px;
            right: 20px;
            background-color: #4CAF50;
            color: white;
            padding: 16px 24px;
            border-radius: 4px;
            z-index: 9999;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            animation: slideInRight 0.3s ease;
            max-width: 350px;
        }

        .toast.error {
            background-color: #f44336;
        }

        @keyframes slideInRight {
            from {
                transform: translateX(400px);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        /* Filter Section */
        .filter-section {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
            justify-content: center;
            margin-bottom: 40px;
        }

        .filter-btn {
            padding: 10px 20px;
            border: 2px solid var(--blue);
            background-color: var(--white);
            color: var(--blue);
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-transform: uppercase;
        }

        .filter-btn.active {
            background-color: var(--coral);
            color: var(--white);
            border-color: var(--coral);
        }

        .filter-btn:hover {
            border-color: var(--coral);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero {
                grid-template-columns: 1fr;
                padding: 60px 40px;
            }

            .hero h1 {
                font-size: 42px;
            }

            .categories-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .studies-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .featured-layout {
                grid-template-columns: 1fr;
            }

            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }

            section {
                padding: 60px 40px;
            }
        }

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

            .hero h1 {
                font-size: 32px;
            }

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

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

            .data-strip {
                flex-direction: column;
                gap: 20px;
                padding: 40px 20px;
            }

            .footer-content {
                grid-template-columns: 1fr;
            }

            .nav-container {
                flex-direction: column;
                gap: 20px;
            }

            section {
                padding: 40px 20px;
            }

            .header {
                padding: 30px 20px;
            }
        }