body {
            font-family: 'Roboto', sans-serif;
            color: #333;
            background-color: #f8f9fa;
        }

        /* --- Navbar Styles --- */
        .navbar-custom {
            background: linear-gradient(135deg, #1a3c6b 0%, #2c5aa0 100%);
            padding: 0.75rem 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            min-height: 80px;
        }

        .navbar-custom .navbar-brand {
            padding: 0;
            margin-right: 1rem;
        }

        .navbar-custom .navbar-brand img {
            transition: all 0.3s ease;
            max-height: 60px !important;
            width: auto;
        }

        .navbar-custom .navbar-brand:hover img {
            transform: scale(1.05);
        }

        .navbar-custom .navbar-nav {
            align-items: center;
        }

        .navbar-custom .nav-link {
            color: #ffffff !important;
            font-weight: 500;
            padding: 0.5rem 0.75rem;
            transition: all 0.3s ease;
            position: relative;
            white-space: nowrap;
            font-size: 0.9rem;
        }

        .navbar-custom .nav-link:hover {
            color: #ffd700 !important;
            transform: translateY(-2px);
        }

        .navbar-custom .nav-link.active {
            color: #ffd700 !important;
        }

        .navbar-custom .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: 0;
            left: 50%;
            background-color: #ffd700;
            transition: all 0.3s ease;
            transform: translateX(-50%);
        }

        .navbar-custom .nav-link:hover::after,
        .navbar-custom .nav-link.active::after {
            width: 80%;
        }

        .navbar-custom .navbar-toggler {
            border: none;
            padding: 0.25rem 0.5rem;
            margin-left: auto;
        }

        .navbar-custom .navbar-toggler:focus {
            box-shadow: none;
        }

        .navbar-custom .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='m4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .dropdown-menu {
            background: linear-gradient(135deg, #1a3c6b 0%, #2c5aa0 100%);
            border: none;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            border-radius: 8px;
            margin-top: 0.5rem;
        }

        .dropdown-item {
            color: #ffffff !important;
            padding: 0.5rem 1rem;
            transition: all 0.3s ease;
            font-size: 0.9rem;
        }

        .dropdown-item:hover {
            background-color: rgba(255, 215, 0, 0.1);
            color: #ffd700 !important;
            transform: translateX(5px);
        }

        /* Custom dropdown toggle styling */
        .navbar-custom .dropdown-toggle::after {
            display: none; /* Hide default Bootstrap arrow */
        }

        .navbar-custom .dropdown-toggle {
            position: relative;
            padding-right: 1.5rem !important; /* Add extra space for arrow */
        }

        .navbar-custom .dropdown-toggle::before {
            content: '';
            position: absolute;
            right: 0.5rem;
            top: 50%;
            transform: translateY(-50%);
            width: 0;
            height: 0;
            border-left: 4px solid transparent;
            border-right: 4px solid transparent;
            border-top: 5px solid #ffffff;
            transition: all 0.3s ease;
            opacity: 0.8;
        }

        .navbar-custom .dropdown-toggle:hover::before {
            border-top-color: #ffd700;
            opacity: 1;
            transform: translateY(-50%) scale(1.1);
        }

        .navbar-custom .dropdown-toggle[aria-expanded="true"]::before {
            transform: translateY(-50%) rotate(180deg);
            border-top-color: #ffd700;
            opacity: 1;
        }

        /* Logo responsive sizing */
        .navbar-logo {
            max-height: 60px !important;
            width: auto;
            transition: all 0.3s ease;
        }

        /* Prevent navbar text wrapping on medium screens */
        @media (min-width: 992px) and (max-width: 1199.98px) {
            .navbar-custom .nav-link {
                font-size: 0.85rem;
                padding: 0.5rem 0.6rem;
            }

            .navbar-custom .dropdown-toggle {
                padding-right: 1.3rem !important;
            }

            .navbar-custom .dropdown-toggle::before {
                right: 0.3rem;
                border-left: 3px solid transparent;
                border-right: 3px solid transparent;
                border-top: 4px solid #ffffff;
            }
        }

        /* Large screens - make logo even bigger */
        @media (min-width: 1200px) {
            .navbar-logo {
                max-height: 70px !important;
            }

            .navbar-custom {
                min-height: 90px;
            }

            .navbar-custom .dropdown-toggle {
                padding-right: 1.8rem !important;
            }

            .navbar-custom .dropdown-toggle::before {
                right: 0.6rem;
                border-left: 5px solid transparent;
                border-right: 5px solid transparent;
                border-top: 6px solid #ffffff;
            }
        }

        /* --- Hero Section --- */
        .hero-section {
            background: url('../images/top.jpg') no-repeat center center;
            background-size: cover;
            width: 100%;
            height: 0;
            padding-bottom: 35.73%; /* 686/1920 = 0.3573 = 35.73% */
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-section .container {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 100%;
            max-width: 1200px;
            padding: 0 15px;
        }
        .hero-content {
            background: rgba(255, 255, 255, 0.9);
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            max-width: 800px;
            margin: auto;
        }
        .hero-logo-7 {
            font-size: 8rem;
            font-weight: 700;
            color: #0d6efd;
            line-height: 1;
        }
        .hero-logo-text {
            font-size: 3.5rem;
            font-weight: 700;
            color: #1a3c6b;
            line-height: 1.1;
        }
        .hero-title {
            color: #1a3c6b;
            font-weight: 700;
        }
        .hero-location {
            color: #1a3c6b;
            font-weight: 500;
        }

        /* --- Wavy Divider --- */
        .wavy-divider {
            width: 100%;
            height: 50px; /* Adjust height as needed */
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none" style="background-color: %23f8f9fa;"><path d="M0,0 L1200,0 L1200,24.17 C1132.19,1.08 1055.71,8.69 985.66,27.17 C906.67,48 823.78,89 743.84,105.81 C661.58,123.15 575.78,122.14 493.39,104.42 C435.55,92.69 379.39,73.35 321.39,62.56 A600.21,600.21,0,0,0,0,92.65 Z" style="fill:%236295E8;"></path></svg>');
            background-size: cover;
            margin-top: -1px;
        }
        
        /* --- General Section Styling --- */
        .section-padding {
            padding: 4rem 0;
        }
        .section-title {
            font-weight: 700;
            color: #1a3c6b;
            text-transform: uppercase;
            margin-bottom: 1rem;
        }
        .date-header {
            font-size: 1.75rem;
            color: #555;
            margin-bottom: 0.5rem;
        }
        .divider-line {
            width: 80px;
            height: 3px;
            background-color: #0d6efd;
            margin: auto;
            margin-bottom: 2.5rem;
        }
        .info-box {
            border-left: 4px solid #0d6efd;
            padding-left: 1.5rem;
            margin-bottom: 2rem;
        }

        /* --- Enhanced Welcome Section Styles --- */
        .welcome-section {
            position: relative;
            overflow: hidden;
        }
        .welcome-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(13, 110, 253, 0.03) 0%, transparent 70%);
            animation: float 20s ease-in-out infinite;
        }
        @keyframes float {
            0%, 100% { transform: translate(0, 0) rotate(0deg); }
            50% { transform: translate(-20px, -20px) rotate(180deg); }
        }

        .date-header-enhanced {
            font-size: 1.75rem;
            color: #6c757d;
            margin-bottom: 0.5rem;
            position: relative;
            display: inline-block;
        }
        .date-header-enhanced::before {
            content: '📅';
            margin-right: 0.5rem;
            font-size: 1.2em;
        }

        .section-title-enhanced {
            font-weight: 700;
            color: #1a3c6b;
            text-transform: uppercase;
            margin-bottom: 1rem;
            position: relative;
            z-index: 2;
        }

        .welcome-card {
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            padding: 2.5rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            position: relative;
            z-index: 2;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .welcome-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
        }

        .highlight-box {
            background: linear-gradient(135deg, #e3f2fd 0%, #f3e5f5 100%);
            border-left: 5px solid #2196f3;
            border-radius: 10px;
            padding: 2rem;
            margin: 2rem 0;
            position: relative;
            box-shadow: 0 4px 15px rgba(33, 150, 243, 0.1);
        }
        .highlight-box::before {
            content: '🎯';
            position: absolute;
            top: -10px;
            left: 20px;
            background: #2196f3;
            color: white;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }

        .location-card {
            background: linear-gradient(135deg, #fff3e0 0%, #fce4ec 100%);
            border-radius: 15px;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-left: 5px solid #ff9800;
            box-shadow: 0 4px 15px rgba(255, 152, 0, 0.1);
            position: relative;
        }
        .location-card::before {
            content: '🌍';
            position: absolute;
            top: -10px;
            left: 20px;
            background: #ff9800;
            color: white;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }

        .download-card {
            background: linear-gradient(135deg, #ffebee 0%, #f3e5f5 100%);
            border-radius: 15px;
            padding: 1.5rem;
            border: 2px solid #e91e63;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .download-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
            transition: left 0.5s;
        }
        .download-card:hover::before {
            left: 100%;
        }
        .download-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(233, 30, 99, 0.2);
        }

        .pdf-icon {
            background: linear-gradient(135deg, #e53935 0%, #d32f2f 100%);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 12px;
            box-shadow: 0 4px 10px rgba(229, 57, 53, 0.3);
        }

        /* --- Enhanced Publication & Dates Section --- */
        .publication-dates-section {
            background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
            position: relative;
        }
        .publication-dates-section::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"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e9ecef" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
            opacity: 0.3;
        }

        .publication-card {
            background: linear-gradient(135deg, #e8f5e8 0%, #f0f8ff 100%);
            border-radius: 20px;
            padding: 2.5rem;
            margin-bottom: 2rem;
            box-shadow: 0 8px 25px rgba(76, 175, 80, 0.15);
            border: 1px solid rgba(76, 175, 80, 0.2);
            position: relative;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .publication-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 35px rgba(76, 175, 80, 0.2);
        }
        .publication-card::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 150px;
            height: 150px;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="%234caf50" stroke-width="2" opacity="0.1"/><path d="M30 40h40v30H30z" fill="%234caf50" opacity="0.1"/><path d="M35 35h30v5H35z" fill="%234caf50" opacity="0.2"/></svg>');
            opacity: 0.3;
        }
        .publication-card h3 {
            color: #2e7d32;
            font-weight: 700;
            margin: -2.5rem -2.5rem 1.5rem -2.5rem;
            padding: 2rem 2.5rem 3rem 2.5rem;
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(76, 175, 80, 0.1) 0%, rgba(46, 125, 50, 0.05) 100%);
            border-radius: 20px 20px 0 0;
        }
        .publication-card h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 30px;
            background: radial-gradient(ellipse 100% 30px at center bottom, rgba(76, 175, 80, 0.1) 0%, transparent 100%);
        }
        .publication-icon {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, #4caf50 0%, #2e7d32 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1rem;
            box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
            position: relative;
        }
        .publication-icon i {
            color: white;
            font-size: 1.5rem;
        }
        .publication-icon::after {
            content: '';
            position: absolute;
            top: -2px;
            left: -2px;
            right: -2px;
            bottom: -2px;
            background: linear-gradient(45deg, #4caf50, #2e7d32, #4caf50);
            border-radius: 14px;
            z-index: -1;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .publication-card:hover .publication-icon::after {
            opacity: 1;
        }

        .springer-logo-container {
            background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
            border-radius: 25px;
            padding: 3rem 2rem;
            margin-bottom: 3rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            text-align: center;
            border: 3px solid #4caf50;
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
            min-height: 300px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }
        .springer-logo-container:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(76, 175, 80, 0.2);
            border-color: #2e7d32;
        }
        .springer-logo-container::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(76, 175, 80, 0.05) 0%, transparent 70%);
            animation: rotate 20s linear infinite;
        }
        @keyframes rotate {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .springer-logo-wrapper {
            position: relative;
            z-index: 2;
            margin-bottom: 2rem;
        }
        .springer-logo {
            max-width: 320px;
            width: 100%;
            height: auto;
            filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
            transition: transform 0.3s ease;
        }
        .springer-logo-container:hover .springer-logo {
            transform: scale(1.08);
        }

        .publisher-badge {
            display: inline-flex;
            align-items: center;
            background: linear-gradient(135deg, #4caf50 0%, #2e7d32 100%);
            color: white;
            padding: 0.75rem 1.5rem;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 700;
            box-shadow: 0 4px 15px rgba(76, 175, 80, 0.4);
            position: relative;
            z-index: 2;
            margin-bottom: 2rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .publisher-badge i {
            margin-right: 0.75rem;
            font-size: 1.2rem;
        }
        .publisher-badge::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, #66bb6a 0%, #4caf50 100%);
            border-radius: 30px;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .publisher-badge:hover::before {
            opacity: 1;
        }
        .publisher-badge span {
            position: relative;
            z-index: 1;
        }

        .database-tags {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
            justify-content: center;
            position: relative;
            z-index: 2;
        }
        .database-tag {
            display: inline-flex;
            align-items: center;
            color: white;
            padding: 0.75rem 1.25rem;
            border-radius: 25px;
            font-size: 1rem;
            font-weight: 700;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            position: relative;
            overflow: hidden;
        }
        .database-tag::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.5s;
        }
        .database-tag:hover::before {
            left: 100%;
        }
        .database-tag:hover {
            transform: translateY(-3px) scale(1.05);
        }
        .database-tag i {
            margin-right: 0.5rem;
            font-size: 1.1rem;
        }
        .database-tag.scopus {
            background: linear-gradient(135deg, #ff9800 0%, #f57c00 100%);
            box-shadow: 0 4px 15px rgba(255, 152, 0, 0.4);
        }
        .database-tag.ei {
            background: linear-gradient(135deg, #9c27b0 0%, #7b1fa2 100%);
            box-shadow: 0 4px 15px rgba(156, 39, 176, 0.4);
        }

        .indexing-info {
            background: linear-gradient(135deg, #e8f5e8 0%, #f1f8e9 100%);
            border-radius: 20px;
            padding: 2rem;
            margin-top: 2rem;
            border-left: 6px solid #4caf50;
            position: relative;
            box-shadow: 0 6px 20px rgba(76, 175, 80, 0.1);
        }
        .indexing-info::before {
            content: '';
            position: absolute;
            top: 15px;
            right: 20px;
            width: 40px;
            height: 40px;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%234caf50"><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z"/></svg>');
            opacity: 0.2;
        }

        /* --- Enhanced Submission Methods Section --- */
        .submission-section {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            position: relative;
            overflow: hidden;
        }
        .submission-section::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"><defs><pattern id="submission-grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="%23dee2e6" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23submission-grid)"/></svg>');
            opacity: 0.3;
        }

        .submission-card {
            background: rgba(255, 255, 255, 0.95);
            border-radius: 25px;
            padding: 3rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            position: relative;
            z-index: 2;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .submission-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
        }

        .submission-title {
            color: #1a3c6b;
            font-weight: 700;
            margin: -3rem -3rem 2rem -3rem;
            padding: 2.5rem 3rem 3.5rem 3rem;
            display: flex;
            align-items: center;
            font-size: 2rem;
            position: relative;
            z-index: 2;
            background: linear-gradient(135deg, rgba(33, 150, 243, 0.1) 0%, rgba(26, 60, 107, 0.05) 100%);
            border-radius: 25px 25px 0 0;
        }
        .submission-title::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 35px;
            background: radial-gradient(ellipse 100% 35px at center bottom, rgba(33, 150, 243, 0.1) 0%, transparent 100%);
        }
        .submission-title::before {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent 0%, rgba(33, 150, 243, 0.3) 20%, rgba(33, 150, 243, 0.5) 50%, rgba(33, 150, 243, 0.3) 80%, transparent 100%);
            border-radius: 0 0 50px 50px;
            z-index: 3;
        }
        .submission-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #2196f3 0%, #1976d2 100%);
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1.5rem;
            box-shadow: 0 6px 20px rgba(33, 150, 243, 0.3);
            position: relative;
        }
        .submission-icon i {
            color: white;
            font-size: 1.8rem;
        }
        .submission-icon::after {
            content: '';
            position: absolute;
            top: -3px;
            left: -3px;
            right: -3px;
            bottom: -3px;
            background: linear-gradient(45deg, #2196f3, #1976d2, #2196f3);
            border-radius: 18px;
            z-index: -1;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .submission-card:hover .submission-icon::after {
            opacity: 1;
        }

        .submission-info {
            background: linear-gradient(135deg, #e3f2fd 0%, #f3e5f5 100%);
            border-radius: 20px;
            padding: 2rem;
            margin-bottom: 2rem;
            border-left: 6px solid #2196f3;
            position: relative;
            box-shadow: 0 4px 15px rgba(33, 150, 243, 0.1);
        }
        .submission-info::before {
            content: '📝';
            position: absolute;
            top: -15px;
            left: 25px;
            background: #2196f3;
            color: white;
            width: 35px;
            height: 35px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .submission-links {
            background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
            border-radius: 20px;
            padding: 2.5rem;
            margin-bottom: 2rem;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
            border: 2px solid #e9ecef;
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
        }
        .submission-links h5 {
            position: relative;
            margin: -2.5rem -2.5rem 1.5rem -2.5rem;
            padding: 2rem 2.5rem 2.5rem 2.5rem;
            background: linear-gradient(135deg, rgba(0, 123, 255, 0.08) 0%, rgba(255, 193, 7, 0.05) 100%);
            border-radius: 20px 20px 0 0;
        }
        .submission-links h5::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 25px;
            background: radial-gradient(ellipse 100% 25px at center bottom, rgba(0, 123, 255, 0.08) 0%, transparent 100%);
        }
        .submission-links:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 35px rgba(0, 0, 0, 0.15);
            border-color: #007bff;
        }
        .submission-links::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 123, 255, 0.05) 0%, transparent 70%);
            animation: rotate 15s linear infinite;
        }
        .submission-links .btn {
            border-radius: 25px;
            padding: 0.75rem 2rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            transition: all 0.3s ease;
            position: relative;
            z-index: 2;
        }
        .submission-links .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
        }

        .template-card {
            background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
            border-radius: 20px;
            padding: 2.5rem;
            margin-bottom: 2rem;
            text-align: center;
            transition: all 0.3s ease;
            border: 2px solid #e9ecef;
            position: relative;
            overflow: hidden;
            height: 100%;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
        }
        .template-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 35px rgba(0, 0, 0, 0.15);
        }
        .template-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
            transition: left 0.5s;
        }
        .template-card:hover::before {
            left: 100%;
        }
        .template-card.doc:hover {
            border-color: #28a745;
        }
        .template-card.pdf:hover {
            border-color: #dc3545;
        }

        .template-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 1rem;
            background: linear-gradient(135deg, #e3f2fd 0%, #f3e5f5 100%);
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            font-weight: bold;
            color: #1976d2;
            box-shadow: 0 4px 15px rgba(33, 150, 243, 0.2);
            transition: transform 0.3s ease;
            position: relative;
            z-index: 2;
        }
        .template-card:hover .template-icon {
            transform: scale(1.1);
        }

        .template-card.doc .template-icon {
            background: linear-gradient(135deg, #e8f5e8 0%, #f1f8e9 100%);
            color: #2e7d32;
        }
        .template-card.pdf .template-icon {
            background: linear-gradient(135deg, #ffebee 0%, #fce4ec 100%);
            color: #c62828;
        }

        .template-title {
            margin: -2.5rem -2.5rem 1.5rem -2.5rem;
            padding: 2rem 2.5rem 2.5rem 2.5rem;
            position: relative;
            background: linear-gradient(135deg, rgba(40, 167, 69, 0.12) 0%, rgba(40, 167, 69, 0.08) 100%);
            border-radius: 20px 20px 0 0;
            text-align: center;
        }
        .template-title h4 {
            font-weight: 700;
            color: #1a3c6b;
            font-size: 1.2rem;
            margin: 0;
        }
        .template-card.doc .template-title {
            background: linear-gradient(135deg, rgba(40, 167, 69, 0.15) 0%, rgba(40, 167, 69, 0.08) 100%);
        }
        .template-card.pdf .template-title {
            background: linear-gradient(135deg, rgba(220, 53, 69, 0.15) 0%, rgba(220, 53, 69, 0.08) 100%);
        }
        .template-title::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 30px;
            background: radial-gradient(ellipse 100% 30px at center bottom, rgba(40, 167, 69, 0.12) 0%, transparent 100%);
        }
        .template-card.doc .template-title::after {
            background: radial-gradient(ellipse 100% 30px at center bottom, rgba(40, 167, 69, 0.15) 0%, transparent 100%);
        }
        .template-card.pdf .template-title::after {
            background: radial-gradient(ellipse 100% 30px at center bottom, rgba(220, 53, 69, 0.15) 0%, transparent 100%);
        }
        .template-title::before {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent 0%, rgba(40, 167, 69, 0.3) 20%, rgba(40, 167, 69, 0.5) 50%, rgba(40, 167, 69, 0.3) 80%, transparent 100%);
            border-radius: 0 0 50px 50px;
        }
        .template-card.doc .template-title::before {
            background: linear-gradient(90deg, transparent 0%, rgba(40, 167, 69, 0.4) 20%, rgba(40, 167, 69, 0.6) 50%, rgba(40, 167, 69, 0.4) 80%, transparent 100%);
        }
        .template-card.pdf .template-title::before {
            background: linear-gradient(90deg, transparent 0%, rgba(220, 53, 69, 0.4) 20%, rgba(220, 53, 69, 0.6) 50%, rgba(220, 53, 69, 0.4) 80%, transparent 100%);
        }
        .template-description {
            color: #6c757d;
            font-size: 0.9rem;
            line-height: 1.5;
            flex-grow: 1;
        }

        .template-card .text-center.mt-3 {
            margin-top: auto !important;
        }

        .submission-links .text-center:last-child {
            margin-top: auto;
        }

        .dates-card {
            background: linear-gradient(135deg, #fff3e0 0%, #fce4ec 100%);
            border-radius: 20px;
            padding: 2.5rem;
            margin-bottom: 2rem;
            box-shadow: 0 8px 25px rgba(255, 152, 0, 0.15);
            border: 1px solid rgba(255, 152, 0, 0.2);
            position: relative;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .dates-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 35px rgba(255, 152, 0, 0.2);
        }
        .dates-card::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 150px;
            height: 150px;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="%23ff9800" stroke-width="2" opacity="0.1"/><rect x="30" y="35" width="40" height="30" rx="5" fill="none" stroke="%23ff9800" stroke-width="2" opacity="0.1"/><line x1="40" y1="25" x2="40" y2="45" stroke="%23ff9800" stroke-width="2" opacity="0.2"/><line x1="60" y1="25" x2="60" y2="45" stroke="%23ff9800" stroke-width="2" opacity="0.2"/></svg>');
            opacity: 0.3;
        }
        .dates-card h3 {
            color: #e65100;
            font-weight: 700;
            margin: -2.5rem -2.5rem 1.5rem -2.5rem;
            padding: 2rem 2.5rem 3rem 2.5rem;
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(255, 152, 0, 0.1) 0%, rgba(230, 81, 0, 0.05) 100%);
            border-radius: 20px 20px 0 0;
        }
        .dates-card h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 30px;
            background: radial-gradient(ellipse 100% 30px at center bottom, rgba(255, 152, 0, 0.1) 0%, transparent 100%);
        }
        .dates-icon {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, #ff9800 0%, #e65100 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1rem;
            box-shadow: 0 4px 15px rgba(255, 152, 0, 0.3);
            position: relative;
        }
        .dates-icon i {
            color: white;
            font-size: 1.5rem;
        }
        .dates-icon::after {
            content: '';
            position: absolute;
            top: -2px;
            left: -2px;
            right: -2px;
            bottom: -2px;
            background: linear-gradient(45deg, #ff9800, #e65100, #ff9800);
            border-radius: 14px;
            z-index: -1;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .dates-card:hover .dates-icon::after {
            opacity: 1;
        }

        .date-item-enhanced {
            background: rgba(255, 255, 255, 0.9);
            border-radius: 15px;
            padding: 1.25rem 1.5rem 1.25rem 4rem;
            margin-bottom: 1rem;
            border-left: 4px solid #ff9800;
            box-shadow: 0 3px 12px rgba(255, 152, 0, 0.1);
            transition: all 0.3s ease;
            position: relative;
            backdrop-filter: blur(10px);
        }
        .date-item-enhanced:hover {
            transform: translateX(8px);
            box-shadow: 0 6px 20px rgba(255, 152, 0, 0.25);
            border-left-color: #e65100;
        }
        .date-item-enhanced:last-child {
            margin-bottom: 0;
        }
        .date-item-enhanced .date-label {
            color: #5d4037;
            font-weight: 500;
            display: flex;
            align-items: center;
            margin-bottom: 0.5rem;
        }
        .date-item-enhanced .date-value {
            color: #e65100;
            font-weight: 700;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
        }
        .date-item-icon {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            width: 35px;
            height: 35px;
            background: linear-gradient(135deg, #ff9800 0%, #e65100 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 3px 10px rgba(255, 152, 0, 0.3);
        }
        .date-item-icon i {
            color: white;
            font-size: 1rem;
        }
        .date-item-enhanced:hover .date-item-icon {
            transform: translateY(-50%) scale(1.1);
            box-shadow: 0 4px 15px rgba(255, 152, 0, 0.4);
        }
        
        /* --- Important Dates --- */
        .date-item {
            display: flex;
            justify-content: space-between;
            border-bottom: 1px solid #e0e0e0;
            padding: 0.75rem 0;
        }
        .date-item:last-child {
            border-bottom: none;
        }
        
        /* --- Submission Methods Icons --- */
        .submission-link-item {
            text-align: center;
        }
        .submission-link-item img {
            max-width: 60px;
            margin-bottom: 1rem;
        }
        .submission-link-item a {
            text-decoration: none;
            color: #333;
            font-weight: 500;
        }
        .submission-link-item a:hover {
            color: #0d6efd;
        }

        /* --- Compact Sponsors Section --- */
        .sponsors-section-compact {
            background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
            padding: 3rem 0;
            border-top: 1px solid #e9ecef;
            position: relative;
        }

        .sponsors-section-compact::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"><defs><pattern id="compact-grid" width="30" height="30" patternUnits="userSpaceOnUse"><circle cx="15" cy="15" r="0.5" fill="%23e9ecef" opacity="0.4"/></pattern></defs><rect width="100" height="100" fill="url(%23compact-grid)"/></svg>');
            opacity: 0.6;
        }

        .sponsors-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
            position: relative;
            z-index: 2;
            background: rgba(255, 255, 255, 0.9);
            border-radius: 20px;
            padding: 2rem;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        .sponsor-group {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1rem;
            flex: 1;
            position: relative;
        }

        .sponsor-group:not(:last-child)::after {
            content: '';
            position: absolute;
            right: -1rem;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 60%;
            background: linear-gradient(to bottom, transparent, #e9ecef, transparent);
        }

        .sponsor-group-multiple {
            flex: 2;
        }

        .sponsor-label {
            font-weight: 600;
            color: #1a3c6b;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin: 0;
            text-align: center;
            white-space: nowrap;
        }

        .sponsor-logo-compact {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0.8rem;
            background: rgba(255, 255, 255, 0.8);
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            min-height: 80px;
            position: relative;
            overflow: hidden;
        }

        .sponsor-logo-compact::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(98, 149, 232, 0.1), transparent);
            transition: left 0.5s;
        }

        .sponsor-logo-compact:hover::before {
            left: 100%;
        }

        .sponsor-logo-compact:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
            background: rgba(255, 255, 255, 0.95);
        }

        .sponsor-logo-compact img {
            max-height: 60px;
            max-width: 120px;
            width: auto;
            height: auto;
            filter: grayscale(10%) brightness(1.05);
            transition: all 0.3s ease;
        }

        .sponsor-logo-compact:hover img {
            filter: grayscale(0%) brightness(1.1);
            transform: scale(1.05);
        }

        .sponsor-logos-compact {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
            justify-content: center;
        }

        /* Responsive adjustments for compact sponsors */
        @media (max-width: 991.98px) {
            .sponsors-container {
                flex-direction: column;
                gap: 2.5rem;
                padding: 2.5rem 1.5rem;
            }

            .sponsor-group:not(:last-child)::after {
                display: none;
            }

            .sponsor-group {
                width: 100%;
                padding-bottom: 1.5rem;
                border-bottom: 1px solid rgba(233, 236, 239, 0.5);
            }

            .sponsor-group:last-child {
                border-bottom: none;
                padding-bottom: 0;
            }

            .sponsor-logos-compact {
                gap: 1.5rem;
            }

            .sponsor-logo-compact {
                min-height: 70px;
            }

            .sponsor-logo-compact img {
                max-height: 55px;
                max-width: 110px;
            }
        }

        @media (max-width: 767.98px) {
            .sponsors-section-compact {
                padding: 2rem 0;
            }

            .sponsors-container {
                padding: 2rem 1rem;
                gap: 2rem;
            }

            .sponsor-label {
                font-size: 0.85rem;
            }

            .sponsor-logos-compact {
                flex-direction: column;
                gap: 1rem;
            }

            .sponsor-logo-compact {
                min-height: 60px;
                width: 100%;
                max-width: 200px;
            }

            .sponsor-logo-compact img {
                max-height: 45px;
                max-width: 100px;
            }
        }

        @media (max-width: 575.98px) {
            .sponsors-container {
                padding: 1.5rem 0.8rem;
                gap: 1.5rem;
            }

            .sponsor-label {
                font-size: 0.8rem;
            }

            .sponsor-logo-compact {
                min-height: 50px;
                padding: 0.6rem;
            }

            .sponsor-logo-compact img {
                max-height: 40px;
                max-width: 90px;
            }
        }

        /* --- Page Header Section --- */
        .page-header-section {
            background: #36528F;
            padding: 8rem 0 0;
            position: relative;
            overflow: hidden;
        }

        .page-header-section::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"><defs><pattern id="page-grid" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23page-grid)"/></svg>');
            opacity: 0.3;
        }

        .page-header-content {
            position: relative;
            z-index: 2;
            color: white;
        }

        .page-title {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        }

        .page-subtitle {
            font-size: 1.2rem;
            opacity: 0.9;
        }

        /* --- Page Header Wave Divider --- */
        .page-header-section + .wavy-divider {
            background: #36528F;
            position: relative;
            height: 80px;
            overflow: hidden;
        }

        .page-header-section + .wavy-divider::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"><path d="M0,40C300,80 500,80 600,40C700,0 900,0 1200,40V120H0V40Z" fill="%23a8c5f0" opacity="0.6"/><path d="M0,60C200,100 400,100 600,60C800,20 1000,20 1200,60V120H0V60Z" fill="%23f8f9fa"/></svg>') no-repeat center bottom;
            background-size: cover;
        }

        /* --- Content Section --- */
        .content-section {
            background: #f8f9fa;
        }

        .content-card {
            background: white;
            border-radius: 20px;
            padding: 3rem;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
            border: 1px solid rgba(98, 149, 232, 0.1);
            position: relative;
            overflow: hidden;
        }

        .content-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #1a3c6b 0%, #2c5aa0 50%, #6295E8 100%);
        }

        .content-text {
            font-size: 1.1rem;
            line-height: 1.8;
            color: #555;
        }

        .content-text .lead {
            color: #1a3c6b;
            font-weight: 500;
        }

        /* --- Topics Section --- */
        .topics-card {
            background: white;
            border-radius: 20px;
            padding: 3rem;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
            border: 1px solid rgba(98, 149, 232, 0.1);
            position: relative;
            overflow: hidden;
        }

        .topics-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #1a3c6b 0%, #2c5aa0 50%, #6295E8 100%);
        }

        .topic-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1.5rem;
            background: rgba(98, 149, 232, 0.05);
            border-radius: 15px;
            border-left: 4px solid #6295E8;
            transition: all 0.3s ease;
            height: 100%;
        }

        .topic-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(98, 149, 232, 0.15);
            background: rgba(98, 149, 232, 0.08);
        }

        .topic-icon {
            color: #6295E8;
            font-size: 1.2rem;
            margin-top: 0.2rem;
            flex-shrink: 0;
        }

        .topic-content h4 {
            color: #1a3c6b;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .topic-content p {
            color: #666;
            margin: 0;
            line-height: 1.6;
        }

        /* --- Info and Contact Cards --- */
        .info-card, .contact-card {
            background: white;
            border-radius: 15px;
            padding: 2rem;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
            border: 1px solid rgba(98, 149, 232, 0.1);
            height: 100%;
            transition: all 0.3s ease;
        }

        .info-card:hover, .contact-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
        }

        .card-title {
            color: #1a3c6b;
            font-weight: 600;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }

        .info-list {
            list-style: none;
            padding: 0;
        }

        .info-list li {
            padding: 0.5rem 0;
            font-size: 1.05rem;
            color: #555;
        }

        .contact-info p {
            margin-bottom: 0.8rem;
            color: #555;
        }

        /* --- Section Titles --- */
        .section-title {
            color: #1a3c6b;
            font-weight: 700;
            margin-bottom: 2rem;
            font-size: 2rem;
            display: flex;
            align-items: center;
        }

        .section-title i {
            color: #6295E8;
        }

        /* --- Responsive Design for Page Content --- */
        @media (max-width: 991.98px) {
            .page-header-section {
                padding: 6rem 0 0;
            }

            .page-header-section + .wavy-divider {
                height: 70px;
            }

            .page-title {
                font-size: 2.8rem;
            }

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

            .content-card, .topics-card {
                padding: 2rem;
            }

            .section-title {
                font-size: 1.8rem;
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
            }

            .topic-item {
                padding: 1.2rem;
            }
        }

        @media (max-width: 767.98px) {
            .page-header-section {
                padding: 5rem 0 0;
            }

            .page-header-section + .wavy-divider {
                height: 60px;
            }

            .page-title {
                font-size: 2.2rem;
            }

            .page-subtitle {
                font-size: 1rem;
            }

            .content-card, .topics-card {
                padding: 1.5rem;
            }

            .section-title {
                font-size: 1.6rem;
            }

            .topic-item {
                flex-direction: column;
                text-align: center;
                padding: 1rem;
            }

            .topic-icon {
                margin-top: 0;
                font-size: 1.5rem;
            }

            .info-card, .contact-card {
                padding: 1.5rem;
                margin-bottom: 1.5rem;
            }
        }

        @media (max-width: 575.98px) {
            .page-header-section {
                padding: 4rem 0 0;
            }

            .page-header-section + .wavy-divider {
                height: 50px;
            }

            .page-title {
                font-size: 1.8rem;
            }

            .content-card, .topics-card {
                padding: 1.2rem;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .topic-item {
                padding: 0.8rem;
            }

            .info-card, .contact-card {
                padding: 1.2rem;
            }
        }
        
        /* --- Footer --- */
        .footer-custom {
            background-color: #1a3c6b;
            color: rgba(255, 255, 255, 0.8);
            padding: 1.5rem 0;
        }

        /* Mobile Navigation Improvements */
        @media (max-width: 991.98px) {
            .navbar-custom {
                padding: 0.5rem 0;
                min-height: 70px;
            }

            .navbar-custom .navbar-brand img {
                max-height: 50px !important;
            }

            .navbar-custom .navbar-nav {
                margin-top: 1rem;
                padding-top: 1rem;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
            }

            .navbar-custom .navbar-nav .nav-link {
                padding: 0.75rem 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
                font-size: 1rem;
                white-space: normal;
            }

            .navbar-custom .navbar-nav .nav-link:last-child {
                border-bottom: none;
            }

            .dropdown-menu {
                background: rgba(26, 60, 107, 0.95);
                margin-top: 0;
                border-radius: 0;
                box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.1);
            }

            .dropdown-item {
                padding: 0.5rem 2rem;
                font-size: 0.9rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }

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

            /* Mobile dropdown arrow adjustments */
            .navbar-custom .dropdown-toggle {
                padding-right: 2rem !important;
            }

            .navbar-custom .dropdown-toggle::before {
                right: 0.8rem;
                border-left: 5px solid transparent;
                border-right: 5px solid transparent;
                border-top: 6px solid #ffffff;
            }
        }

        /* Extra small screens */
        @media (max-width: 575.98px) {
            .navbar-custom .navbar-brand img {
                max-height: 45px !important;
            }

            .navbar-custom .navbar-nav .nav-link {
                font-size: 0.95rem;
                padding: 0.6rem 1rem;
            }

            .navbar-custom .dropdown-toggle {
                padding-right: 1.8rem !important;
            }

            .navbar-custom .dropdown-toggle::before {
                right: 0.6rem;
                border-left: 4px solid transparent;
                border-right: 4px solid transparent;
                border-top: 5px solid #ffffff;
            }

            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        /* Responsive adjustments */
        @media (max-width: 768px) {
            .hero-section {
                padding-bottom: 35.73%; /* 保持相同的宽高比 */
            }
            .hero-logo-7 {
                font-size: 5rem;
            }
            .hero-logo-text {
                font-size: 2rem;
            }
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-content {
                padding: 1.5rem;
                margin: 0 10px;
            }
            .sponsor-logos {
                justify-content: center;
            }
        }

        @media (max-width: 480px) {
            .hero-section {
                padding-bottom: 35.73%; /* 保持相同的宽高比 */
            }
            .hero-logo-7 {
                font-size: 3.5rem;
            }
            .hero-logo-text {
                font-size: 1.5rem;
            }
            .hero-title {
                font-size: 1.2rem;
            }
            .hero-content {
                padding: 1rem;
                margin: 0 5px;
            }
        }