@media screen and (max-width: 768px) {
    .header-inner {
        padding: 0 15px;
    }

    .nav ul {
        gap: 20px;
    }

    .nav-apply {
        padding: 6px 16px;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-text {
        font-size: 1rem;
    }

    .btn {
        padding: 12px 32px;
    }

    .hero-circle {
        width: 500px;
        height: 500px;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
    }

    .hero-logo {
        padding-left: 0;
        margin-top: 40px;
    }

    .hero-logo img {
        width: 200px;
    }
}

@media screen and (max-width: 480px) {
    .nav {
        display: none;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .hero-logo img {
        width: 150px;
    }
}