/* 响应式设计 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .nav-links {
        display: none;
    }

    .subscribe-form {
        gap: 10px;
    }

    .subscribe-form input,
    .subscribe-form button {
        border-radius: 30px;
    }

    .btn-outline {
        margin-left: 0;
        margin-top: 15px;
    }
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
}