/**
 * 扬梦文化 - 响应式
 * 断点: 768px, 1024px
 */

.nav-backdrop {
    display: none;
}

@media (max-width: 1024px) {
    .stats-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .theme-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .how-steps {
        grid-template-columns: 1fr;
    }

    .teachers-grid,
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .video-placeholder {
        max-width: 280px;
        margin-left: auto;
        margin-right: auto;
    }

    .video-grid-single {
        max-width: 280px;
    }

    .packages-preview {
        grid-template-columns: 1fr;
    }

    .packages-detail {
        grid-template-columns: 1fr;
    }

    .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .library-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-backdrop {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0,0,0,0.4);
        z-index: 9998;
        cursor: pointer;
        touch-action: manipulation;
    }

    .main-nav.open + .nav-backdrop {
        display: block;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-bg-card);
        box-shadow: -4px 0 20px rgba(0,0,0,0.1);
        padding: 80px 24px 24px;
        transition: right var(--transition);
        z-index: 9999;
    }

    .main-nav.open {
        right: 0;
    }

    .main-nav .nav-list {
        flex-direction: column;
        align-items: stretch;
    }

    .main-nav .nav-dropdown .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        padding-left: 16px;
        margin-top: 8px;
        background: transparent;
    }

    .header-cta {
        display: none;
    }

    .logo-img {
        width: 140px;
    }

    .section {
        padding: 48px 0;
    }

    .stats-row {
        grid-template-columns: 1fr;
        gap: 24px;
    }

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

    .teachers-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .cta-box {
        padding: 40px 24px;
    }

    .how-detail-step {
        flex-direction: column;
    }

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

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

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

    /* 移动端显示浮动联系按钮 */
    .float-contact {
        display: block;
    }
}

@media (min-width: 769px) {
    .float-contact {
        display: none;
    }
}

/* 微信内置浏览器 - 底部安全区 */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
    .float-contact {
        bottom: calc(24px + env(safe-area-inset-bottom));
        right: calc(24px + env(safe-area-inset-right));
    }
}