:root {
            --igda-primary: #1a365d;
            --igda-secondary: #f8a01d;
            --igda-accent: #2d6b93;
            --igda-light: #f8f9fa;
            --igda-dark: #343a40;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--igda-dark);
        }
        .igda-bg-primary { background-color: var(--igda-primary); }
        .igda-bg-secondary { background-color: var(--igda-secondary); }
        .igda-text-primary { color: var(--igda-primary); }
        .igda-text-secondary { color: var(--igda-secondary); }
        .igda-btn-primary {
            background-color: var(--igda-primary);
            color: white;
            padding: 12px 28px;
            border-radius: 4px;
            transition: all 0.3s ease;
            border: 2px solid var(--igda-primary);
        }
        .igda-btn-primary:hover {
            background-color: transparent;
            color: var(--igda-primary);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .igda-btn-secondary {
            background-color: var(--igda-secondary);
            color: var(--igda-primary);
            padding: 12px 28px;
            border-radius: 4px;
            transition: all 0.3s ease;
            border: 2px solid var(--igda-secondary);
        }
        .igda-btn-secondary:hover {
            background-color: transparent;
            color: var(--igda-secondary);
            transform: translateY(-3px);
        }
        .hero-section {
            background: linear-gradient(rgba(26, 54, 93, 0.85), rgba(26, 54, 93, 0.9)), url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
            color: white;
            padding: 120px 0;
        }
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            position: relative;
            margin-bottom: 50px;
            padding-bottom: 15px;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: var(--igda-secondary);
        }
        .section-title.text-center:after {
            left: 50%;
            transform: translateX(-50%);
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .member-card {
            border-top: 5px solid var(--igda-secondary);
            overflow: hidden;
        }
        .member-card img {
            transition: transform 0.5s ease;
        }
        .member-card:hover img {
            transform: scale(1.05);
        }
        .event-card {
            border-left: 5px solid var(--igda-accent);
        }
        .flink {
            display: inline-flex;
            align-items: center;
            padding: 12px 20px;
            background: var(--igda-light);
            border-radius: 8px;
            margin: 8px;
            transition: all 0.3s ease;
            color: var(--igda-primary);
            text-decoration: none;
            font-weight: 500;
        }
        .flink:hover {
            background: var(--igda-secondary);
            color: white;
            transform: translateY(-3px);
        }
        .flink i {
            margin-right: 10px;
            font-size: 1.2rem;
        }
        .navbar-brand img { max-height: 50px; }
        .footer { background-color: #0d1b2a; color: #e0e1dd; }
        .footer a { color: #e0e1dd; text-decoration: none; transition: color 0.3s ease; }
        .footer a:hover { color: var(--igda-secondary); }
        .social-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.1);
            border-radius: 50%;
            margin-right: 10px;
            transition: all 0.3s ease;
        }
        .social-icon:hover {
            background: var(--igda-secondary);
            transform: translateY(-5px);
        }
        .sticky-nav {
            position: sticky;
            top: 0;
            z-index: 1020;
            backdrop-filter: blur(10px);
            background-color: rgba(26, 54, 93, 0.95);
            transition: all 0.3s ease;
        }
        .timeline-item {
            position: relative;
            padding-left: 30px;
            margin-bottom: 30px;
        }
        .timeline-item:before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--igda-secondary);
        }
        .timeline-item:after {
            content: '';
            position: absolute;
            left: 5px;
            top: 26px;
            width: 2px;
            height: calc(100% + 20px);
            background: var(--igda-accent);
        }
        .timeline-item:last-child:after { display: none; }
        .resource-icon {
            font-size: 2.5rem;
            color: var(--igda-accent);
            margin-bottom: 15px;
        }
        @media (max-width: 768px) {
            .hero-section { padding: 80px 0; }
            .section-padding { padding: 60px 0; }
            .display-4 { font-size: 2.2rem; }
            .flink { width: 100%; margin: 5px 0; }
        }