/* 移动端响应式样式 */

@media (max-width: 768px) {
    /* 基础调整 */
    body {
        font-size: 15px;
    }
    
    .section {
        padding: 50px 15px;
    }
    
    h2 {
        font-size: 1.8em;
    }
    
    h3 {
        font-size: 1.3em;
    }
    
    /* 导航 */
    .nav {
        padding: 12px 0;
    }
    
    .logo img {
        height: 42px;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 68px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 68px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 30px 20px;
        transition: left 0.3s;
        box-shadow: 0 4px 20px rgba(0,0,0,0.15);
        gap: 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 0;
        border-bottom: 1px solid rgba(102,126,234,0.1);
    }
    
    .nav-menu a {
        padding: 18px 15px;
        border-radius: 0;
        font-size: 1.05em;
    }
    
    .nav-menu a::after {
        display: none;
    }
    
    /* Hero */
    .hero {
        padding: 50px 20px 40px;
        min-height: auto;
    }
    
    .hero-social-proof {
        flex-wrap: wrap;
        gap: 15px;
        padding: 12px 20px;
        margin-bottom: 20px;
    }
    
    .proof-number {
        font-size: 1.2em;
    }
    
    .proof-label {
        font-size: 0.75em;
    }
    
    .proof-divider {
        display: none;
    }
    
    .hero-badge {
        padding: 8px 18px;
        font-size: 0.85em;
        margin-bottom: 20px;
    }
    
    .badge-icon {
        font-size: 1em;
    }
    
    .badge-text {
        font-size: 0.9em;
    }
    
    .hero h1 {
        font-size: 1.4em;
        line-height: 1.4;
        margin-bottom: 20px;
    }
    
    .subtitle-line {
        font-size: 0.75em;
        margin-top: 8px;
    }
    
    .hero-pain-point {
        padding: 10px 18px;
        margin-bottom: 25px;
        font-size: 0.9em;
    }
    
    .pain-icon {
        font-size: 1.1em;
    }
    
    .pain-text {
        font-size: 0.85em;
    }
    
    .hero-features {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-bottom: 25px;
    }
    
    .hero-feature-item {
        padding: 15px;
    }
    
    .feature-icon {
        font-size: 1.5em;
    }
    
    .feature-text strong {
        font-size: 0.95em;
    }
    
    .feature-text span {
        font-size: 0.8em;
    }
    
    .hero-description {
        font-size: 0.9em;
        line-height: 1.7;
        margin-bottom: 25px;
    }
    
    .hero-price-preview {
        margin-bottom: 25px;
    }
    
    .price-tag {
        flex-direction: column;
        gap: 8px;
        padding: 12px 25px;
        text-align: center;
    }
    
    .price-value {
        font-size: 1.2em;
    }
    
    .price-note {
        font-size: 0.8em;
    }
    
    .cta-btn {
        width: 100%;
        justify-content: center;
    }
    
    .btn-content {
        align-items: center;
    }
    
    .btn-content strong {
        font-size: 1em;
    }
    
    .btn-content small {
        font-size: 0.75em;
    }
    
    .hero-urgency {
        font-size: 0.85em;
        padding: 8px 15px;
        margin-bottom: 20px;
    }
    
    .trust-badges {
        gap: 10px;
    }
    
    .trust-item {
        padding: 8px 15px;
        font-size: 0.85em;
    }
    
    .cta-group {
        flex-direction: column;
        gap: 15px;
    }
    
    .cta-btn {
        width: 100%;
        padding: 15px 30px;
    }
    
    /* 权威期刊 */
    .publishers-section {
        padding: 40px 15px;
    }
    
    .publishers-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .publishers-text h3 {
        font-size: 1.4em;
        text-align: center;
    }
    
    .publishers-text p {
        font-size: 0.95em;
        text-align: center;
    }
    
    /* 网格布局 */
    .pain-grid,
    .features-grid,
    .scenario-grid,
    .testimonial-grid,
    .tips-grid {
        grid-template-columns: 1fr;
    }
    
    .content-grid,
    .principle-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .principle-stats {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .stat-card {
        padding: 25px 20px;
    }
    
    .stat-number {
        font-size: 2em;
    }
    
    /* 联系我们 */
    .contact-info {
        padding: 25px;
    }
    
    .contact-list li {
        flex-direction: column;
        align-items: flex-start;
        padding: 15px 0;
    }
    
    .contact-list strong {
        min-width: auto;
        margin-bottom: 5px;
    }
    
    .btn-copy-wechat {
        margin-left: 0;
        margin-top: 5px;
    }
    
    /* 步骤流程 */
    .steps-container {
        flex-direction: column;
    }
    
    .step-arrow {
        transform: rotate(90deg);
        margin: 20px 0;
    }

    /* 价格 */
    .price-amount {
        font-size: 3em;
    }
    
    /* FAQ */
    .quick-questions {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        margin-bottom: 35px;
    }
    
    .quick-question-item {
        padding: 15px 10px;
        font-size: 0.9em;
    }
    
    .qq-icon {
        font-size: 1.5em;
    }
    
    .faq-categories {
        grid-template-columns: 1fr;
    }
    
    /* 页脚 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    /* 侧边栏导航 - 移动端隐藏 */
    .sidebar-nav {
        display: none;
    }
    
    /* 价值对比 */
    .value-comparison {
        flex-direction: column;
        padding: 25px 15px;
        gap: 15px;
    }
    
    .comparison-item {
        padding: 20px;
    }
    
    .comparison-price {
        font-size: 2em;
    }
    
    .comparison-vs {
        transform: rotate(90deg);
        margin: 10px 0;
    }
    
    .urgency-tag {
        font-size: 0.85em;
        padding: 10px 15px;
        flex-wrap: wrap;
    }
    
    .guarantee-box {
        flex-direction: column;
        text-align: center;
        padding: 15px;
    }
    
    .btn-subtext {
        font-size: 0.8em;
    }
    
    /* 悬浮CTA */
    .floating-cta {
        bottom: 80px;
        right: 15px;
    }
    
    .floating-cta-btn {
        padding: 12px 20px;
        gap: 10px;
    }
    
    .floating-icon {
        font-size: 1.3em;
    }
    
    .floating-text strong {
        font-size: 0.95em;
    }
    
    .floating-text small {
        font-size: 0.75em;
    }
    
    /* 回到顶部按钮 */
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
    
    /* 表格横向滚动 */
    .comparison-table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    /* 统计数据 */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .stat-value {
        font-size: 2em;
    }
    
    /* Logo网格 */
    .logo-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* 信任信号 */
    .trust-signals {
        flex-direction: column;
        gap: 15px;
    }
    
    /* 点击目标最小尺寸 */
    .cta-btn,
    .btn-demo,
    .btn-contact,
    .btn-submit,
    .faq-question {
        min-height: 48px;
        min-width: 48px;
    }
    
    /* 增加间距 */
    .pain-item,
    .feature-card,
    .scenario-card,
    .testimonial-item {
        padding: 25px;
    }
    
    /* 字体大小调整 */
    .section-intro {
        font-size: 1em;
    }
}

/* 超小屏幕 */
@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.5em;
    }
    
    h2 {
        font-size: 1.5em;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .price-amount {
        font-size: 2.5em;
    }
}

    /* 新Banner移动端样式 */
    .hero-top {
        flex-direction: column;
        gap: 15px;
        margin-bottom: 30px;
    }
    
    .hero-stats-inline {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
    
    .hero-stats-inline .divider {
        display: none;
    }
    
    .hero-main h1 {
        font-size: 1.8em;
    }
    
    .hero-subtitle {
        font-size: 1.05em;
    }
    
    .hero-alert {
        font-size: 0.85em;
        padding: 8px 18px;
    }
    
    .hero-features-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-bottom: 35px;
    }
    
    .feature-box {
        padding: 20px 15px;
    }
    
    .hero-price-card {
        flex-direction: column;
        gap: 12px;
        padding: 20px 25px;
    }
    
    .price-big {
        font-size: 2em;
    }
    
    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .cta-btn {
        width: 100%;
    }
    
    .hero-footer {
        flex-direction: column;
        gap: 15px;
    }
    
    .footer-right {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }