/* 平板设备 (768px - 992px) */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        margin-bottom: 50px;
    }
    
    .contact-content {
        flex-direction: column;
    }
    
    .contact-info {
        margin-bottom: 50px;
    }
    
    .contact-form {
        width: 100%;
        max-width: none;
    }

    /* 平板设备导航菜单 */
    nav ul {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-icon-container {
        margin-top: 30px;
    }
    
    .hero-icons-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .hero-main-icon {
        font-size: 80px;
    }
    
    .method-cards {
        grid-template-columns: 1fr;
    }
}

/* 手机设备 (小于768px) */
@media (max-width: 768px) {
    /* 手机导航栏优化 */
    header {
        padding: 8px 0;
    }
    
    header .container {
        padding: 0;
    }
    
    .logo {
        font-size: 16px;
    }
    
    .logo-icon {
        font-size: 24px;
        margin-right: 8px;
    }
    
    .logo-text {
        font-size: 18px;
    }
    
    .contact-info {
        display: none;
    }
    
    .mobile-menu-btn {
        font-size: 20px;
        padding: 5px;
    }
    
    /* 手机菜单样式 */
    nav ul {
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 15px;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        display: none;
        z-index: 1000;
        max-height: calc(100vh - 60px);
        overflow-y: auto;
    }

    nav ul.active {
        display: flex;
    }

    nav li {
        margin: 8px 0;
        text-align: center;
    }
    
    nav a {
        display: block;
        padding: 10px 15px;
        font-size: 16px;
        border-radius: 4px;
        transition: all 0.3s ease;
    }
    
    nav a:hover {
        background: rgba(52, 152, 219, 0.1);
        color: var(--primary);
    }
    
    /* 调整主视觉区域上边距 */
    .hero {
        padding: 100px 0 60px;
        margin-top: 60px;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero .subtitle {
        font-size: 16px;
    }
    
    .hero-features {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .feature {
        margin: 5px;
        font-size: 14px;
    }
    
    .feature .icon {
        font-size: 18px;
        margin-right: 5px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    
    .employment-stats {
        flex-direction: column;
    }

    .section-title {
        font-size: 28px;
    }

    .faq-tabs {
        flex-direction: column;
        align-items: center;
    }

    .faq-tab {
        width: 100%;
        max-width: 250px;
        text-align: center;
    }

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

    .course-cards {
        grid-template-columns: 1fr;
    }

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

    .teacher-cards {
        grid-template-columns: 1fr;
    }

    .testimonial-cards {
        grid-template-columns: 1fr;
    }

    .employment-process {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .hero-icons-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .hero-icon-item {
        padding: 10px;
    }
    
    .hero-icon-item i {
        font-size: 24px;
    }
    
    .hero-icon-item span {
        font-size: 12px;
    }
    
    .method-cards {
        grid-template-columns: 1fr;
    }
    
    .method-card-small {
        flex-direction: column;
        text-align: center;
    }
    
    .social-links {
        flex-direction: column;
    }
}

/* 小手机设备 (小于480px) */
@media (max-width: 480px) {
    /* 进一步优化导航栏 */
    header {
        padding: 5px 0;
    }
    
    .logo {
        font-size: 14px;
    }
    
    .logo-icon {
        font-size: 20px;
        margin-right: 6px;
    }
    
    .logo-text {
        font-size: 16px;
    }
    
    .mobile-menu-btn {
        font-size: 18px;
        padding: 3px;
    }
    
    /* 调整主视觉区域 */
    .hero {
        padding: 80px 0 50px;
        margin-top: 50px;
    }
    
    .hero h1 {
        font-size: 24px;
    }
    
    .hero .subtitle {
        font-size: 14px;
    }
    
    .hero-features {
        gap: 8px;
    }
    
    .feature {
        font-size: 12px;
    }
    
    .feature .icon {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .section-subtitle {
        font-size: 16px;
    }
    
    .contact-form {
        padding: 20px;
    }
    
    .modal-content {
        padding: 30px 20px;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .stat-label {
        font-size: 16px;
    }
    
    .live-title {
        font-size: 16px;
    }
    
    .live-item {
        font-size: 14px;
    }
    
    .hero-main-icon {
        font-size: 60px;
    }
    
    .hero-icons-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    .hero-icon-item {
        padding: 8px;
    }
    
    .hero-icon-item i {
        font-size: 20px;
    }
    
    .hero-icon-item span {
        font-size: 11px;
    }
}

/* 超小屏幕设备 (小于360px) */
@media (max-width: 360px) {
    header .container {
        padding: 0;
    }
    
    .logo-text {
        font-size: 14px;
    }
    
    .logo-icon {
        font-size: 18px;
    }
    
    .hero {
        margin-top: 45px;
        padding: 70px 0 40px;
    }
    
    .hero h1 {
        font-size: 22px;
    }
    
    .hero .subtitle {
        font-size: 13px;
    }
}