:root {
            --primary: #1b4332; 
            --secondary: #2d6a4f;
            --accent: #d4a373; 
            --light: #f8f9fa;
            --dark: #212529;
            --header-height: 80px;
        }

        * { box-sizing: border-box; }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            margin: 0;
            background-color: #f0f2f0;
            color: var(--dark);
        }

        /* STICKY HEADER */
        header {
            background-color: var(--primary);
            color: white;
            padding: 0 5%;
            height: var(--header-height);
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 4px solid var(--accent);
            position: sticky;
            top: 0;
            z-index: 2000;
        }

        /* STICKY NAVIGATION */
        nav {
            background: white;
            padding: 0.5rem 5%;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            display: flex;
            justify-content: flex-start;
            position: sticky;
            top: var(--header-height);
            z-index: 1000;
        }

        nav a {
            text-decoration: none;
            color: var(--primary);
            margin-right: 20px;
            font-weight: bold;
            text-transform: uppercase;
            font-size: 0.85rem;
        }

        /* HAMBURGER ICON */
        .menu-toggle {
            display: none;
            cursor: pointer;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background: white;
            border-radius: 2px;
        }

        /* PAGE HEADER */
        .page-intro {
            background: var(--secondary);
            color: white;
            padding: 40px 5%;
            text-align: center;
        }

        /* EVENT GRID */
        .event-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            padding: 40px 5%;
            max-width: 1200px;
            margin: auto;
        }

        .event-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            transition: transform 0.2s, box-shadow 0.2s;
            display: flex;
            flex-direction: column;
        }

        .event-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }

        .event-image {
            height: 140px;
            background: #e9ecef;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
        }

        .event-details {
            padding: 20px;
            flex-grow: 1;
        }

        .event-date {
            color: var(--accent);
            font-weight: bold;
            text-transform: uppercase;
            font-size: 0.75rem;
            display: block;
            margin-bottom: 8px;
        }

        .location-tag {
            display: inline-block;
            background: #f1f3f5;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.7rem;
            color: #495057;
            margin-top: 10px;
        }

        .notice-section {
            background: white;
            padding: 30px;
            border-radius: 8px;
            margin: 0 5% 40px;
            max-width: 1200px;
            border-left: 5px solid var(--accent);
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
        }

        footer {
            background: var(--dark);
            color: #ccc;
            padding: 60px 5% 20px;
            text-align: center;
            font-size: 0.8rem;
        }

        /* MOBILE RESPONSIVE RULES */
        @media (max-width: 768px) {
            :root { --header-height: 70px; }
            .header-info { display: none; }
            .menu-toggle { display: flex; }

            header h1 { font-size: 1.2rem; }

            nav {
                display: none;
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: white;
                flex-direction: column;
                padding: 10px 0;
            }

            nav.active { display: flex; }

            nav a {
                margin: 0;
                padding: 15px 25px;
                border-bottom: 1px solid #eee;
            }

            .event-grid { padding: 20px; }
        }