/* 平板设备 (768px - 1024px) */
@media screen and (max-width: 1024px) {
    .hero__title {
        font-size: 2.8rem;
    }

    .hero__subtitle {
        font-size: 1.3rem;
    }

    .section__title {
        font-size: 2.2rem;
    }
}

/* 移动设备 (< 768px) */
@media screen and (max-width: 768px) {
    /* 导航栏响应式 */
    .nav {
        flex-direction: column;
        padding: 1rem;
    }

    .nav__menu {
        display: none; /* 在移动端默认隐藏菜单 */
        flex-direction: column;
        width: 100%;
        text-align: center;
        padding: 1rem 0;
    }

    .nav__menu.active {
        display: flex;
    }

    .nav__buttons {
        margin-top: 1rem;
    }

    /* 主视觉区域响应式 */
    .hero {
        height: 80vh;
    }

    .hero__title {
        font-size: 2rem;
    }

    .hero__subtitle {
        font-size: 1.1rem;
    }

    /* 产品特点响应式 */
    .features {
        padding: 3rem 1rem;
    }

    .features__grid {
        grid-template-columns: 1fr;
    }

    .feature__card {
        padding: 1.5rem;
    }

    /* 解决方案响应式 */
    .solutions {
        padding: 3rem 1rem;
    }

    .solutions__container {
        grid-template-columns: 1fr;
    }

    .solution__item img {
        height: 250px;
    }

    /* 页脚响应式 */
    .footer {
        padding: 3rem 1rem 1rem;
    }

    .footer__content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social__links {
        justify-content: center;
    }
}

/* 小屏幕移动设备 (< 480px) */
@media screen and (max-width: 480px) {
    .hero__title {
        font-size: 1.8rem;
    }

    .hero__subtitle {
        font-size: 1rem;
    }

    .btn {
        padding: 0.4rem 1.2rem;
        font-size: 0.9rem;
    }

    .btn--primary {
        padding: 0.6rem 1.5rem;
        font-size: 1rem;
    }
}