:root {
            --primary-color: #303030; /* สีส้มทอง */
            --dark-color: #2c3e50;
            --light-color: #ecf0f1;
            --accent-color: #27ae60;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Kanit', sans-serif; }
        body { background-color: #f4f7f6; scroll-behavior: smooth; }

        /* Navigation */
        nav {
            background: white;
            padding: 1rem 5%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            z-index: 1000;
        }
        .logo { font-weight: 600; font-size: 1.5rem; color: var(--primary-color); }
        .nav-links { list-style: none; display: flex; gap: 20px; }
        .nav-links a { text-decoration: none; color: var(--dark-color); transition: 0.3s; font-weight: 400; }
        .nav-links a:hover { color: var(--primary-color); }

        .lang-btn {
            background: var(--dark-color);
            color: white;
            border: none;
            padding: 6px 15px;
            border-radius: 20px;
            cursor: pointer;
            font-size: 0.9rem;
        }

        /* Hero Section with Cards */
        .hero {
            padding: 100px 5% 60px;
            background: linear-gradient(135deg, #2c3e50 0%, #000000 100%);
            color: white;
            text-align: center;
            min-height: 80vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }
        .hero h1 { font-size: 2rem; margin-bottom: 10px; }
        .hero p { opacity: 0.8; margin-bottom: 40px; }

        .hero-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            width: 100%;
            max-width: 1100px;
        }
        .hero-card img {
            width: 100%;
            justify-content: center;
            border-radius: 1rem;
        }
        .hero-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 40px 20px;
            border-radius: 20px;
            text-decoration: none;
            color: white;
            border: 1px solid rgba(255,255,255,0.2);
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .hero-card:hover {
            background: var(--primary-color);
            transform: translateY(-10px);
            border-color: transparent;
        }
        .hero-card i { font-size: 2.5rem; margin-bottom: 15px; display: block; }
        .hero-card h3 { font-size: 1.2rem; }

        /* General Sections */
        section { padding: 80px 10%; }
        h2 { text-align: center; margin-bottom: 40px; font-size: 2.2rem; }

        .content-card {
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin-bottom: 30px;
        }

        .grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }
        .item-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
            text-align: center;
        }
        .item-card img { width: 100%; height: 200px; object-fit: cover; }
        .item-card-body { padding: 15px; }

        .btn {
            display: inline-block;
            margin-top: 10px;
            padding: 8px 20px;
            background: var(--primary-color);
            color: white;
            text-decoration: none;
            border-radius: 5px;
        }

        footer { text-align: center; padding: 30px; background: #1a1a1a; color: white; margin-top: 50px; }

        @media (max-width: 768px) {
            .nav-links { display: none; }
            .hero h1 { font-size: 2.2rem; }
        }