/* Header */
        header {
            background: linear-gradient(rgb(0 0 0 / 70%), rgb(203 78 78 / 70%)), url(https://dosor.info/image/Black-background.jpg) no-repeat center center / cover;
            color: var(--light-text);
            text-align: center;
            padding: 6vh 2rem 4vh;
            min-height: 30vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        header h1 {
            font-size: clamp(1.8rem, 6vw, 2.5rem);
            margin-bottom: 1rem;
            line-height: 1.3;
        }

        /* Navigation */
        nav {
            background-color: var(--primary-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }

        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.8rem 0;
        }

        .logo {
            color: var(--light-text);
            font-weight: bold;
            font-size: 1.2rem;
            text-decoration: none;
            display: flex;
            align-items: center;
        }

        .logo img {
            height: 30px;
            margin-right: 10px;
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--light-text);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }

        .nav-links {
            display: flex;
            list-style: none;
            transition: all 0.3s ease;
        }

        .nav-links li {
            position: relative;
        }

        .nav-links a {
            color: var(--light-text);
            text-decoration: none;
            font-weight: bold;
            padding: 0.6rem 1rem;
            border-radius: 5px;
            transition: all 0.3s;
            display: block;
            font-size: 0.95rem;
        }

        .nav-links a:hover, 
        .nav-links a:focus {
            background-color: var(--primary-dark);
        }

        .nav-links a.active {
            background-color: var(--primary-dark);
        }

        /* Main Content */
        .container {
            max-width: 1000px;
            margin: 3rem auto;
            padding: 0 1.5rem;
        }

        section {
            margin-bottom: 3rem;
        }

        h2 {
            font-size: clamp(1.5rem, 4vw, 2rem);
            margin-bottom: 1.8rem;
            color: var(--primary-dark);
            position: relative;
            padding-bottom: 0.8rem;
        }

        h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 70px;
            height: 4px;
            background-color: var(--primary-color);
            border-radius: 2px;
        }