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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            background: #f7fafc;
            margin: 0;
            padding: 0;
        }

        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0,0,0,0.1);
            z-index: 1000;
            padding: 15px 0;
        }

        .navbar-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 30px;
        }

        .nav-menu {
            display: flex;
            gap: 30px;
            list-style: none;
            align-items: center;
        }

        .nav-menu a {
            color: #2d3748;
            text-decoration: none;
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s;
            padding: 8px 0;
            border-bottom: 2px solid transparent;
        }

        .nav-menu a:hover {
            color: #667eea;
            border-bottom-color: #667eea;
        }

        .nav-search {
            position: relative;
            flex: 0 0 300px;
        }

        .nav-search input {
            width: 100%;
            padding: 10px 40px 10px 15px;
            border: 2px solid #e2e8f0;
            border-radius: 25px;
            font-size: 14px;
            transition: all 0.3s;
        }

        .nav-search input:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        .nav-search-icon {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 16px;
            pointer-events: none;
            color: #718096;
        }

        .hero-section {
            min-height: 100vh;
            background-image: url(sponsor_logo/pens_bg.jpg);
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: flex-start;
            justify-content: center;
            position: relative;
            overflow: hidden;
            padding: 120px 20px 40px;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, white, black 60%);
            opacity: 0.7;
        }

        .hero-content {
            max-width: 1200px;
            width: 100%;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .logos-container {
            width: 100%;
            overflow: hidden;
        }

        .logo-track {
            display: flex;
            width: max-content;
            gap: 45px;
            animation: scroll 40s linear infinite;
        }

        .logo {
            display: flex;
            flex: 0 0 auto;
            height: 75px;
            align-items: center;
            justify-content: center;

            /* margin-right: 10px; */
        }

        @keyframes scroll {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(-50%);
            }
        }

        .hero-content h1 {
            font-size: 70px;
            color: white;
            margin-top: 30rem;
            margin-bottom: 15px;
            font-weight: 800;            
        }

        .hero-content p {
            font-size: 24px;
            color: rgba(255,255,255,0.9);
            margin: 10px;
            font-weight: 400;
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
        }

        .main-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            padding-top: 30px;
            gap: 20px;
            margin-bottom: 30px;
        }

        .card {
            /* background: white; */
            border-radius: 20px;
            padding: 30px;
            /* box-shadow: 0 10px 40px rgba(0,0,0,0.08); */
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 50px rgba(0,0,0,0.12);
        }

        .card-header {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 25px;
        }

        .card-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
        }

        .news {
            height: 300px;
            /* background: white; */
            border-radius: 20px;
            padding: 30px;
            /* box-shadow: 0 10px 40px rgba(0,0,0,0.08); */
            margin-bottom: 30px;
            overflow-y: auto;
        }

        .green-icon {
            background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
            color: white;
        }

        .blue-icon {
            background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
            color: white;
        }

        .purple-icon {
            background: linear-gradient(135deg, #9f7aea 0%, #805ad5 100%);
            color: white;
        }

        .orange-icon {
            background: linear-gradient(135deg, #ed8936 0%, #dd6b20 100%);
            color: white;
        }

        .teal-icon {
            background: linear-gradient(135deg, #17a2b8 0%, #138496 100%);
            color: white;
        }


        .card-header h2 {
            font-size: 20px;
            color: #2d3748;
        }

        .menu-list {
            list-style: none;
        }

        .menu-item {
            padding: 9px 0;
            color: #4a5568;
            cursor: pointer;
            transition: all 0.3s;
            font-size: 14px;
        }

        .menu-item:last-child {
            border-bottom: none;
        }

        .menu-item:hover {
            color: #667eea;
            padding-left: 10px;
        }

        .line {
            height: 5px;
            background: #e2e8f0;
        }

        footer {
            padding-bottom: 30px;
        }

        .footer-inner {
            max-width: 1400px;
            margin: 0 auto;
            padding: 30px;
            border-radius: 20px;
            text-align: center;
        }

        .footer-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 15px;
            border-bottom: 1px solid #e2e8f0;
        }

        .footer-left {
            text-align: left;
        }

        .footer-right {
            text-align: right;
        }

        .visitor-counter-footer {
            display: inline-block;
        }

        .visitor-counter-footer h3 {
            color: #4a5568;
            font-size: 13px;
            margin-bottom: 5px;
            font-weight: normal;
        }

        .counter-display-footer {
            font-size: 20px;
            font-weight: bold;
            color: #667eea;
        }

        footer p {
            color: #718096;
            font-size: 14px;
            margin: 5px 0;
        }

        footer a {
            color: #667eea;
            text-decoration: none;
        }

        footer a:hover {
            text-decoration: underline;
        }

        @media (max-width: 768px) {
            .navbar-container {
                flex-direction: column;
                gap: 15px;
            }

            .nav-menu {
                flex-wrap: wrap;
                justify-content: center;
                gap: 15px;
            }

            .nav-search {
                flex: 1 1 100%;
                max-width: 100%;
            }

            .hero-section {
                padding-top: 180px;
            }

            .hero-content h1 {
                font-size: 36px;
            }

            .hero-content p {
                font-size: 18px;
            }

            .logo {
                width: 60px;
                height: 60px;
                font-size: 24px;
            }

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

            .footer-top {
                flex-direction: column;
                gap: 15px;
            }

            .footer-left, .footer-right {
                text-align: center;
            }
        }