/* ===== 响应式设计样式 ===== */

/* 超大屏幕 (1400px+) */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
    
    .hero-title {
        font-size: 4rem;
    }
    
    .section-title {
        font-size: 3rem;
    }
    
    .article-title {
        font-size: 3.2rem;
    }
    
    /* 关于我们 */
    .about {
        padding: 120px 0;
    }
    
    .about-content {
        gap: 60px;
    }
    
    .about-text h2 {
        font-size: 2.8rem;
        margin-bottom: 25px;
    }
    
    .about-intro {
        font-size: 1.3rem;
        margin-bottom: 35px;
    }
    
    .about-features {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .feature-item {
        padding: 20px 25px;
        font-size: 1.1rem;
    }
    
    .feature-item i {
        font-size: 1.4rem;
        margin-right: 12px;
    }
    
    /* 统计数据 */
    .stats {
        padding: 100px 0;
    }
    
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 40px;
    }
    
    .stat-item {
        padding: 30px 20px;
    }
    
    .stat-number {
        font-size: 3.5rem;
    }
    
    .stat-label {
        font-size: 1.1rem;
    }
    
    /* 联系我们 */
    .contact {
        padding: 120px 0;
    }
    
    .contact-content {
        gap: 60px;
    }
    
    .contact-info {
        gap: 35px;
    }
    
    .contact-item {
        gap: 20px;
    }
    
    .contact-icon {
        width: 70px;
        height: 70px;
        font-size: 1.8rem;
    }
    
    .contact-details h4 {
        font-size: 1.3rem;
        margin-bottom: 5px;
    }
    
    .contact-details p {
        font-size: 1.1rem;
    }
    
    .contact-form {
        padding: 50px 45px;
        border-radius: 20px;
    }
    
    .form-group {
        margin-bottom: 25px;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 15px 20px;
        font-size: 16px;
    }
}

/* 大屏幕 (1200px - 1399px) */
@media (max-width: 1399px) {
    .article-layout {
        grid-template-columns: 1fr 280px;
        gap: 50px;
    }
}

/* 中等屏幕 (992px - 1199px) */
@media (max-width: 1199px) {
    .container {
        max-width: 960px;
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.4rem;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .article-title {
        font-size: 2.5rem;
    }
    
    .article-layout {
        grid-template-columns: 1fr 260px;
        gap: 40px;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 平板屏幕 (768px - 991px) */
@media (max-width: 991px) {
    .container {
        max-width: 720px;
    }
    
    /* 导航菜单 */
    .nav-menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100vh;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        padding: 0;
        gap: 0;
        transition: left 0.3s ease;
        z-index: 1000;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        width: 100%;
        text-align: center;
        margin: 0;
    }
    
    .nav-menu .nav-link {
        display: block;
        padding: 20px 30px;
        font-size: 1.2rem;
        font-weight: 500;
        color: #2c3e50;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        width: 100%;
        text-decoration: none;
        transition: all 0.3s ease;
    }
    
    .nav-menu .nav-link:hover,
    .nav-menu .nav-link.active {
        background: #667eea;
        color: white;
        transform: translateX(10px);
    }
    
    .hamburger {
        display: flex !important;
    }
    
    .nav-menu {
        display: none;
    }
    
    /* 移动端导航菜单 */
    .mobile-nav {
        display: flex;
    }
    
    /* 主页样式 */
    .hero {
        padding: 150px 0 100px;
        text-align: center;
    }
    
    .hero-badge {
        font-size: 0.8rem;
        padding: 8px 20px;
    }
    
    .hero-title {
        font-size: 2.8rem;
        line-height: 1.2;
        margin-bottom: 20px;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
        margin-bottom: 20px;
    }
    
    .hero-description {
        font-size: 1rem;
        margin-bottom: 40px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
        align-items: center;
        margin-bottom: 50px;
    }
    
    .hero-buttons .btn {
        min-width: 200px;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
        max-width: 400px;
    }
    
    .hero-stat {
        flex: 1;
        min-width: 120px;
    }
    
    .hero-stat-number {
        font-size: 2rem;
    }
    
    .hero-stat-label {
        font-size: 0.8rem;
    }
    
    .scroll-indicator {
        bottom: 20px;
    }
    
    .scroll-indicator span {
        font-size: 0.8rem;
    }
    
    .floating-element {
        display: none;
    }
    
    /* 关于我们 */
    .about {
        padding: 80px 0;
    }
    
    .about-header h2 {
        font-size: 2.2rem;
        margin-bottom: 15px;
    }
    
    .about-lead {
        font-size: 1.1rem;
        margin-bottom: 20px;
    }
    
    .about-content {
        gap: 60px;
    }
    
    .about-main {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .about-intro h3 {
        font-size: 1.6rem;
        margin-bottom: 15px;
    }
    
    .about-intro p {
        font-size: 1rem;
        margin-bottom: 30px;
    }
    
    .about-values {
        gap: 20px;
    }
    
    .value-item {
        padding: 20px;
    }
    
    .value-icon {
        width: 50px;
        height: 50px;
    }
    
    .value-icon i {
        font-size: 1.3rem;
    }
    
    .value-content h4 {
        font-size: 1.1rem;
    }
    
    .value-content p {
        font-size: 0.9rem;
    }
    
    .image-wrapper img {
        height: 350px;
    }
    
    .achievement-badges {
        position: static;
        margin-top: 20px;
        justify-content: center;
    }
    
    .about-features {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
    
    .feature-icon {
        width: 70px;
        height: 70px;
        margin-bottom: 20px;
    }
    
    .feature-icon i {
        font-size: 1.8rem;
    }
    
    .feature-card h4 {
        font-size: 1.2rem;
        margin-bottom: 12px;
    }
    
    .feature-card p {
        font-size: 0.9rem;
    }
    
    /* 文章布局 */
    .article-layout {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .article-sidebar {
        order: -1;
        position: static;
        top: auto;
    }
    
    .article-title {
        font-size: 2.2rem;
    }
    
    .article-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .article-stats {
        flex-wrap: wrap;
        gap: 15px;
    }
    
    .article-footer {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    /* 作者简介 */
    .author-bio {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    /* 相关文章 */
    .related-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    /* 服务页面 */
    .service-detail {
        flex-direction: column;
        gap: 30px;
    }
    
    .service-detail.alternate {
        flex-direction: column;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .packages-grid {
        grid-template-columns: 1fr;
    }
    
    /* SEO 网格 */
    .seo-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .ecommerce-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .design-categories {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .design-steps {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    /* AI 标签页 */
    .tab-buttons {
        flex-direction: column;
    }
    
    .tab-btn {
        border-bottom: 1px solid #e9ecef;
    }
    
    .tab-btn:last-child {
        border-bottom: none;
    }
    
    /* 博客页面 */
    .blog-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .blog-sidebar {
        order: -1;
    }
    
    .featured-article {
        margin-bottom: 40px;
    }
    
    .featured-content h2 {
        font-size: 1.8rem;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .blog-content {
        padding: 25px 20px;
    }
    
    .blog-content h3 {
        font-size: 1.25rem;
        margin-bottom: 15px;
    }
    
    .blog-content p {
        font-size: 0.9rem;
        margin-bottom: 20px;
        -webkit-line-clamp: 2;
    }
}

/* 小平板/大手机 (576px - 767px) */
@media (max-width: 767px) {
    .container {
        max-width: 540px;
        padding: 0 15px;
    }
    
    /* 页面头部 */
    .page-header {
        padding: 120px 0 60px;
    }
    
    .article-header {
        padding: 100px 0 50px;
    }
    
    /* 导航 */
    .navbar {
        padding: 12px 0;
    }
    
    .nav-brand {
        font-size: 1.3rem;
    }
    
    .logo {
        height: 42px;
        width: auto;
        max-width: 87px; /* 42px * 2.06 ≈ 87px */
        object-fit: contain;
    }
    
    .nav-brand.logo-text .logo-square {
        height: 35px;
        width: 35px;
    }
    
    .nav-brand.logo-text .brand-text {
        font-size: 1.2rem;
    }
    
    /* 主页样式 */
    .hero {
        padding: 120px 0 80px;
        min-height: 80vh;
    }
    
    .hero-title {
        font-size: 2rem;
        margin-bottom: 15px;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
        margin-bottom: 15px;
    }
    
    .hero-description {
        font-size: 0.95rem;
        margin-bottom: 25px;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    /* 服务网格 */
    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .service-card {
        padding: 25px 20px;
    }
    
    /* 博客网格 */
    .blog-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    /* 关于我们 */
    .about {
        padding: 60px 0;
    }
    
    .about-header {
        margin-bottom: 50px;
    }
    
    .about-header h2 {
        font-size: 2rem;
        margin-bottom: 12px;
    }
    
    .about-lead {
        font-size: 1rem;
        margin-bottom: 15px;
    }
    
    .about-content {
        gap: 40px;
    }
    
    .about-main {
        gap: 35px;
    }
    
    .about-intro h3 {
        font-size: 1.4rem;
        margin-bottom: 12px;
    }
    
    .about-intro p {
        font-size: 0.95rem;
        margin-bottom: 25px;
    }
    
    .about-values {
        gap: 15px;
    }
    
    .value-item {
        padding: 18px;
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .value-icon {
        width: 45px;
        height: 45px;
        margin: 0 auto;
    }
    
    .value-icon i {
        font-size: 1.2rem;
    }
    
    .value-content h4 {
        font-size: 1rem;
        margin-bottom: 5px;
    }
    
    .value-content p {
        font-size: 0.85rem;
    }
    
    .image-wrapper img {
        height: 280px;
    }
    
    .achievement-badges {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .badge-item {
        padding: 12px 15px;
        min-width: 70px;
    }
    
    .badge-number {
        font-size: 1.3rem;
    }
    
    .badge-text {
        font-size: 0.75rem;
    }
    
    .about-features {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-card {
        padding: 25px 20px;
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 18px;
    }
    
    .feature-icon i {
        font-size: 1.6rem;
    }
    
    .feature-card h4 {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }
    
    .feature-card p {
        font-size: 0.85rem;
    }
    
    /* 统计数据 */
    .stats {
        padding: 50px 0;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .stat-label {
        font-size: 0.9rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    /* 文章样式 */
    .article-title {
        font-size: 1.8rem;
        line-height: 1.3;
    }
    
    .article-lead {
        font-size: 1.1rem;
        padding: 15px;
    }
    
    .article-body {
        font-size: 1rem;
        line-height: 1.7;
    }
    
    .article-body h2 {
        font-size: 1.6rem;
        margin: 30px 0 15px 0;
    }
    
    .article-body h2::before {
        display: none;
    }
    
    .article-body h3 {
        font-size: 1.3rem;
        margin: 25px 0 10px 0;
    }
    
    /* 特性网格 */
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-item {
        padding: 25px 15px;
    }
    
    .feature-item i {
        font-size: 2rem;
    }
    
    /* 统计数据展示 */
    .statistics {
        padding: 30px 20px;
    }
    
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .result-number {
        font-size: 2rem;
    }
    
    /* 分享按钮 */
    .share-buttons {
        justify-content: center;
    }
    
    .share-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    /* 标签列表 */
    .tag-list {
        justify-content: center;
    }
    
    /* 评论区域 */
    .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .comment {
        flex-direction: column;
        gap: 15px;
    }
    
    .comment-avatar {
        align-self: center;
    }
    
    .comment-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    
    /* 侧边栏 */
    .sidebar-widget {
        margin-bottom: 30px;
    }
    
    .popular-post {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    /* 表格内容 */
    .table-of-contents ul ul {
        margin-left: 15px;
    }
    
    /* 联系我们 */
    .contact {
        padding: 80px 0;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-info {
        gap: 25px;
        margin-bottom: 20px;
    }
    
    .contact-item {
        flex-direction: row;
        align-items: center;
        gap: 15px;
    }
    
    .contact-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    
    .contact-details h4 {
        font-size: 1.1rem;
        margin-bottom: 3px;
    }
    
    .contact-details p {
        font-size: 0.95rem;
    }
    
    .contact-form {
        padding: 30px 20px;
        border-radius: 12px;
    }
    
    .form-group {
        margin-bottom: 20px;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 12px 15px;
        font-size: 15px;
    }
    
    /* 页脚 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .footer-brand {
        margin-bottom: 10px;
    }
    
    .social-links {
        justify-content: center;
    }
    
    /* 设计步骤 */
    .design-steps {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

/* 手机屏幕 (小于576px) */
@media (max-width: 575px) {
    .container {
        padding: 0 10px;
    }
    
    /* 导航 */
    .navbar {
        padding: 10px 0;
    }
    
    .nav-brand {
        font-size: 1.1rem;
    }
    
    .logo {
        height: 38px;
        width: auto;
        max-width: 78px; /* 38px * 2.06 ≈ 78px */
        object-fit: contain;
    }
    
    .nav-brand.logo-text .logo-square {
        height: 32px;
        width: 32px;
    }
    
    .nav-brand.logo-text .brand-text {
        font-size: 1.1rem;
    }
    
    .nav-menu {
        top: 60px;
        height: calc(100vh - 60px);
        padding-top: 30px;
        gap: 25px;
    }
    
    /* 移动端导航菜单 */
    .mobile-nav-link {
        font-size: 1.6rem;
        padding: 10px 20px;
    }
    
    .mobile-nav-brand {
        font-size: 1.2rem;
        top: 25px;
        left: 25px;
    }
    
    .mobile-nav-close {
        top: 25px;
        right: 25px;
    }
    
    .mobile-nav-footer {
        bottom: 35px;
    }
    
    /* 主页 */
    .hero {
        padding: 100px 0 60px;
        min-height: 70vh;
    }
    
    .hero-badge {
        font-size: 0.7rem;
        padding: 6px 15px;
        margin-bottom: 20px;
    }
    
    .hero-title {
        font-size: 1.8rem;
        margin-bottom: 15px;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 15px;
    }
    
    .hero-description {
        font-size: 0.9rem;
        margin-bottom: 30px;
    }
    
    .hero-buttons {
        margin-bottom: 40px;
    }
    
    .hero-buttons .btn {
        min-width: 180px;
        padding: 10px 25px;
        font-size: 0.9rem;
    }
    
    .hero-stats {
        max-width: 300px;
        gap: 10px;
    }
    
    .hero-stat-number {
        font-size: 1.5rem;
    }
    
    .hero-stat-label {
        font-size: 0.7rem;
    }
    
    /* 页面头部 */
    .page-header,
    .article-header {
        padding: 80px 0 40px;
    }
    
    .page-header-content h1,
    .article-title {
        font-size: 1.6rem;
        line-height: 1.3;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    /* 按钮 */
    .btn {
        padding: 10px 25px;
        font-size: 0.9rem;
    }
    
    /* 服务卡片 */
    .service-card {
        padding: 20px 15px;
    }
    
    .service-icon {
        font-size: 2rem;
        margin-bottom: 12px;
    }
    
    .service-card h3 {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }
    
    /* 博客卡片 */
    .blog-card {
        margin-bottom: 25px;
    }
    
    .blog-content {
        padding: 20px 15px;
    }
    
    .blog-content h3 {
        font-size: 1.2rem;
        margin-bottom: 15px;
        line-height: 1.3;
    }
    
    .blog-meta {
        flex-direction: column;
        gap: 12px;
        margin-bottom: 15px;
        align-items: flex-start;
    }
    
    .blog-category {
        font-size: 0.75rem;
        padding: 3px 10px;
        margin-bottom: 8px;
    }
    
    .blog-date,
    .blog-read-time {
        font-size: 0.8rem;
    }
    
    .blog-meta > div:not(.blog-category) {
        display: flex;
        flex-wrap: wrap;
        gap: 15px;
        width: 100%;
    }
    
    .blog-content p {
        font-size: 0.9rem;
        line-height: 1.6;
        margin-bottom: 18px;
        -webkit-line-clamp: 2;
    }
    
    .blog-link {
        font-size: 0.85rem;
    }
    
    /* 关于我们 */
    .about {
        padding: 50px 0;
    }
    
    .about-header {
        margin-bottom: 40px;
    }
    
    .about-header h2 {
        font-size: 1.8rem;
        margin-bottom: 10px;
    }
    
    .about-lead {
        font-size: 0.95rem;
        margin-bottom: 12px;
    }
    
    .about-content {
        gap: 35px;
    }
    
    .about-main {
        gap: 30px;
    }
    
    .about-intro h3 {
        font-size: 1.3rem;
        margin-bottom: 10px;
    }
    
    .about-intro p {
        font-size: 0.9rem;
        margin-bottom: 20px;
    }
    
    .about-values {
        gap: 12px;
    }
    
    .value-item {
        padding: 15px;
        gap: 12px;
    }
    
    .value-icon {
        width: 40px;
        height: 40px;
    }
    
    .value-icon i {
        font-size: 1.1rem;
    }
    
    .value-content h4 {
        font-size: 0.95rem;
        margin-bottom: 3px;
    }
    
    .value-content p {
        font-size: 0.8rem;
    }
    
    .image-wrapper img {
        height: 250px;
    }
    
    .achievement-badges {
        gap: 8px;
    }
    
    .badge-item {
        padding: 10px 12px;
        min-width: 60px;
    }
    
    .badge-number {
        font-size: 1.2rem;
    }
    
    .badge-text {
        font-size: 0.7rem;
    }
    
    .about-features {
        gap: 18px;
    }
    
    .feature-card {
        padding: 20px 15px;
    }
    
    .feature-icon {
        width: 55px;
        height: 55px;
        margin-bottom: 15px;
    }
    
    .feature-icon i {
        font-size: 1.5rem;
    }
    
    .feature-card h4 {
        font-size: 1rem;
        margin-bottom: 8px;
    }
    
    .feature-card p {
        font-size: 0.8rem;
    }
    
    /* 统计数据 */
    .stats {
        padding: 40px 0;
    }
    
    .stats-grid {
        gap: 15px;
    }
    
    /* 联系我们 */
    .contact {
        padding: 50px 0;
    }
    
    .contact-content {
        gap: 25px;
    }
    
    .contact-info {
        gap: 18px;
    }
    
    .contact-item {
        gap: 10px;
    }
    
    .contact-icon {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
    }
    
    .contact-details h4 {
        font-size: 0.95rem;
    }
    
    .contact-details p {
        font-size: 0.85rem;
    }
    
    .contact-form {
        padding: 20px 15px;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 10px 12px;
        font-size: 14px;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
    
    /* 文章内容 */
    .article-content {
        padding: 60px 0;
    }
    
    .article-image {
        margin-bottom: 25px;
    }
    
    .article-lead {
        font-size: 1rem;
        padding: 12px;
        margin-bottom: 25px;
    }
    
    .article-body {
        font-size: 0.95rem;
    }
    
    .article-body h2 {
        font-size: 1.4rem;
        margin: 25px 0 12px 0;
    }
    
    .article-body h3 {
        font-size: 1.2rem;
        margin: 20px 0 8px 0;
    }
    
    .article-body p {
        margin-bottom: 15px;
    }
    
    .article-body blockquote {
        padding: 15px 20px;
        margin: 20px 0;
    }
    
    .article-body blockquote::before {
        font-size: 3rem;
        top: -5px;
        left: 10px;
    }
    
    /* 代码块 */
    .code-block code {
        padding: 15px;
        font-size: 0.8rem;
    }
    
    /* 信息框 */
    .info-box {
        padding: 15px;
        margin: 20px 0;
    }
    
    /* 特性网格 */
    .feature-item {
        padding: 20px 12px;
    }
    
    .feature-item i {
        font-size: 1.8rem;
        margin-bottom: 10px;
    }
    
    .feature-item h4 {
        font-size: 1rem;
        margin-bottom: 8px;
    }
    
    /* 统计数据展示 */
    .statistics {
        padding: 25px 15px;
        margin: 30px 0;
    }
    
    .statistics h3 {
        font-size: 1.3rem;
        margin-bottom: 20px;
    }
    
    .results-grid {
        gap: 15px;
    }
    
    .result-number {
        font-size: 1.8rem;
    }
    
    .result-label {
        font-size: 0.8rem;
    }
    
    /* 文章页脚 */
    .article-footer {
        margin-top: 40px;
        padding-top: 30px;
    }
    
    .tag-list {
        gap: 8px;
    }
    
    .tag {
        padding: 4px 12px;
        font-size: 0.8rem;
    }
    
    .share-buttons {
        gap: 10px;
    }
    
    .share-btn {
        width: 35px;
        height: 35px;
        font-size: 0.9rem;
    }
    
    /* 作者简介 */
    .author-bio {
        padding: 25px 15px;
        margin: 30px 0;
    }
    
    .author-avatar-large img {
        width: 80px;
        height: 80px;
    }
    
    .author-content h3 {
        font-size: 1.3rem;
    }
    
    .author-social a {
        width: 30px;
        height: 30px;
        font-size: 0.8rem;
    }
    
    /* 相关文章 */
    .related-articles {
        margin-top: 40px;
    }
    
    .related-articles h3 {
        font-size: 1.5rem;
        margin-bottom: 20px;
    }
    
    .related-content {
        padding: 15px;
    }
    
    .related-content h4 {
        font-size: 1rem;
        line-height: 1.3;
    }
    
    .related-content p {
        font-size: 0.85rem;
    }
    
    /* 评论区域 */
    .comments-section {
        margin-top: 40px;
        padding-top: 30px;
    }
    
    .comments-section h3 {
        font-size: 1.5rem;
        margin-bottom: 20px;
    }
    
    .comment-form {
        padding: 20px 15px;
        margin-bottom: 30px;
    }
    
    .comment-form input,
    .comment-form textarea {
        padding: 10px 12px;
        font-size: 13px;
    }
    
    .comment {
        padding: 15px;
        gap: 12px;
    }
    
    .comment-avatar img {
        width: 40px;
        height: 40px;
    }
    
    /* 侧边栏 */
    .sidebar-widget {
        padding: 20px 15px;
        margin-bottom: 25px;
    }
    
    .sidebar-widget h3 {
        font-size: 1.2rem;
        margin-bottom: 15px;
    }
    
    .table-of-contents {
        font-size: 0.85rem;
    }
    
    .popular-post {
        gap: 8px;
        margin-bottom: 15px;
    }
    
    .post-content h4 {
        font-size: 0.9rem;
        line-height: 1.3;
    }
    
    .post-meta {
        font-size: 0.75rem;
    }
    
    .tag-cloud .tag {
        font-size: 0.75rem;
        padding: 3px 8px;
    }
    
    /* 联系咨询 */
    .contact-cta {
        padding: 20px 15px;
    }
    
    .contact-cta h3 {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }
    
    .contact-cta p {
        font-size: 0.9rem;
        margin-bottom: 15px;
    }
    
    /* 页脚 */
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-content {
        gap: 25px;
    }
    
    .footer-brand p {
        font-size: 0.9rem;
        line-height: 1.5;
    }
    
    .footer-section h4 {
        font-size: 1.1rem;
        margin-bottom: 12px;
    }
    
    .footer-section ul li {
        margin-bottom: 6px;
    }
    
    .footer-section ul li a {
        font-size: 0.9rem;
    }
    
    .social-links a {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .footer-bottom {
        padding: 20px 0;
        border-top: 1px solid #dee2e6;
    }
    
    .footer-bottom p {
        font-size: 0.8rem;
        line-height: 1.5;
    }
    
    /* 返回顶部 */
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
        font-size: 1rem;
    }
    
    /* 分页 */
    .pagination {
        gap: 5px;
    }
    
    .page-link {
        width: 35px;
        height: 35px;
        font-size: 0.9rem;
    }
    
    /* 服务页面特殊样式 */
    .service-detail {
        gap: 25px;
    }
    
    .service-content {
        padding: 0;
    }
    
    .service-icon-large {
        font-size: 2.5rem;
        margin-bottom: 15px;
    }
    
    .service-info h2 {
        font-size: 1.5rem;
    }
    
    .process-step {
        padding: 20px 15px;
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .step-content h4 {
        font-size: 1.1rem;
        margin-bottom: 8px;
    }
    
    .package-card {
        padding: 20px 15px;
    }
    
    .package-card h4 {
        font-size: 1.2rem;
    }
    
    /* SEO 服务 */
    .seo-item {
        padding: 20px 15px;
    }
    
    .seo-item i {
        font-size: 2rem;
        margin-bottom: 12px;
    }
    
    .seo-item h4 {
        font-size: 1.1rem;
        margin-bottom: 8px;
    }
    
    /* 电商服务 */
    .ecommerce-card {
        padding: 20px 15px;
    }
    
    .ecommerce-card i {
        font-size: 2rem;
        margin-bottom: 12px;
    }
    
    .ecommerce-card h4 {
        font-size: 1.1rem;
        margin-bottom: 8px;
    }
    
    .platform-item {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
    
    /* 设计服务 */
    .design-category {
        padding: 20px 15px;
    }
    
    .design-category h4 {
        font-size: 1.1rem;
        margin-bottom: 12px;
    }
    
    .design-step {
        padding: 20px 15px;
    }
    
    .step-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
        margin-bottom: 12px;
    }
    
    .design-step h4 {
        font-size: 1rem;
        margin-bottom: 8px;
    }
    
    /* AI 标签页 */
    .ai-tabs {
        margin: 20px 0;
    }
    
    .tab-content {
        padding: 20px 15px;
    }
    
    .tab-panel h4 {
        font-size: 1.2rem;
        margin-bottom: 12px;
    }
    
    .tab-panel p {
        font-size: 0.9rem;
        margin-bottom: 15px;
    }
}

/* 超小屏幕优化 (小于400px) */
@media (max-width: 399px) {
    .container {
        padding: 0 8px;
    }
    
    .mobile-nav-link {
        font-size: 1.4rem;
        padding: 8px 15px;
    }
    
    .mobile-nav-brand {
        font-size: 1.1rem;
        top: 20px;
        left: 20px;
    }
    
    .mobile-nav-close {
        top: 20px;
        right: 20px;
    }
    
    .mobile-nav-footer {
        bottom: 30px;
    }
    
    .hero-badge {
        font-size: 0.65rem;
        padding: 5px 12px;
        margin-bottom: 15px;
    }
    
    .hero-title {
        font-size: 1.6rem;
        margin-bottom: 12px;
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
        margin-bottom: 12px;
    }
    
    .hero-description {
        font-size: 0.85rem;
        margin-bottom: 25px;
    }
    
    .hero-buttons {
        margin-bottom: 30px;
    }
    
    .hero-stats {
        max-width: 260px;
        gap: 8px;
    }
    
    .hero-stat {
        min-width: 70px;
    }
    
    .hero-stat-number {
        font-size: 1.3rem;
    }
    
    .hero-stat-label {
        font-size: 0.65rem;
    }
    
    .article-title {
        font-size: 1.4rem;
    }
    
    .section-title {
        font-size: 1.4rem;
    }
    
    .btn {
        padding: 8px 20px;
        font-size: 0.85rem;
    }
    
    .hero-buttons .btn {
        min-width: 160px;
    }
    
    /* 关于我们 */
    .about {
        padding: 40px 0;
    }
    
    .about-header {
        margin-bottom: 30px;
    }
    
    .about-header h2 {
        font-size: 1.6rem;
        margin-bottom: 8px;
    }
    
    .about-lead {
        font-size: 0.9rem;
        margin-bottom: 10px;
    }
    
    .about-content {
        gap: 30px;
    }
    
    .about-main {
        gap: 25px;
    }
    
    .about-intro h3 {
        font-size: 1.2rem;
        margin-bottom: 8px;
    }
    
    .about-intro p {
        font-size: 0.85rem;
        margin-bottom: 18px;
    }
    
    .about-values {
        gap: 10px;
    }
    
    .value-item {
        padding: 12px;
        gap: 10px;
    }
    
    .value-icon {
        width: 35px;
        height: 35px;
    }
    
    .value-icon i {
        font-size: 1rem;
    }
    
    .value-content h4 {
        font-size: 0.9rem;
        margin-bottom: 2px;
    }
    
    .value-content p {
        font-size: 0.75rem;
    }
    
    .image-wrapper img {
        height: 220px;
    }
    
    .achievement-badges {
        gap: 6px;
    }
    
    .badge-item {
        padding: 8px 10px;
        min-width: 55px;
    }
    
    .badge-number {
        font-size: 1.1rem;
    }
    
    .badge-text {
        font-size: 0.65rem;
    }
    
    .about-features {
        gap: 15px;
    }
    
    .feature-card {
        padding: 18px 12px;
    }
    
    .feature-icon {
        width: 50px;
        height: 50px;
        margin-bottom: 12px;
    }
    
    .feature-icon i {
        font-size: 1.4rem;
    }
    
    .feature-card h4 {
        font-size: 0.95rem;
        margin-bottom: 6px;
    }
    
    .feature-card p {
        font-size: 0.75rem;
    }
    
    /* 统计数据 */
    .stats {
        padding: 35px 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    /* 联系我们 */
    .contact {
        padding: 40px 0;
    }
    
    .contact-content {
        gap: 20px;
    }
    
    .contact-info {
        gap: 15px;
    }
    
    .contact-item {
        gap: 8px;
    }
    
    .contact-icon {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .contact-details h4 {
        font-size: 0.9rem;
    }
    
    .contact-details p {
        font-size: 0.8rem;
    }
    
    .contact-form {
        padding: 18px 12px;
    }
    
    .form-group {
        margin-bottom: 12px;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 8px 10px;
        font-size: 13px;
    }
    
    /* 博客卡片超小屏优化 */
    .blog-content {
        padding: 18px 12px;
    }
    
    .blog-meta {
        gap: 8px;
    }
    
    .blog-category {
        font-size: 0.7rem;
        padding: 2px 8px;
    }
    
    .blog-date,
    .blog-read-time {
        font-size: 0.75rem;
    }
    
    .blog-content h3 {
        font-size: 1.1rem;
        margin-bottom: 12px;
    }
    
    .blog-content p {
        font-size: 0.85rem;
        margin-bottom: 15px;
        -webkit-line-clamp: 2;
    }
    
    .blog-link {
        font-size: 0.8rem;
    }
    
    .comment {
        padding: 12px;
    }
    
    .sidebar-widget {
        padding: 15px 12px;
    }
    
    .related-content {
        padding: 12px;
    }
    
    .author-bio {
        padding: 20px 12px;
    }
    
    .footer-content {
        gap: 20px;
    }
}

/* 打印样式 */
@media print {
    * {
        background: transparent !important;
        color: #000 !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }
    
    .header,
    .footer,
    .back-to-top,
    .hamburger,
    .article-sidebar,
    .comments-section,
    .share-buttons,
    .author-social,
    .social-links {
        display: none !important;
    }
    
    .article-content {
        padding: 0 !important;
    }
    
    .article-layout {
        grid-template-columns: 1fr !important;
    }
    
    .article-main {
        max-width: 100% !important;
    }
    
    .article-title {
        color: #000 !important;
        font-size: 24pt !important;
    }
    
    .article-body {
        font-size: 12pt !important;
        line-height: 1.6 !important;
    }
    
    .article-body h2 {
        font-size: 18pt !important;
        color: #000 !important;
        page-break-after: avoid;
    }
    
    .article-body h3 {
        font-size: 16pt !important;
        color: #000 !important;
        page-break-after: avoid;
    }
    
    .article-body p {
        margin-bottom: 12pt !important;
    }
    
    .code-block {
        background: #f5f5f5 !important;
        border: 1px solid #ddd !important;
        page-break-inside: avoid;
    }
    
    .blockquote {
        border-left: 4px solid #ccc !important;
        background: #f9f9f9 !important;
        page-break-inside: avoid;
    }
    
    .article-image img {
        max-width: 100% !important;
        height: auto !important;
    }
    
    .tag-list {
        display: none !important;
    }
    
    a[href]:after {
        content: " (" attr(href) ")";
        font-size: 10pt;
        color: #666;
    }
    
    a[href^="javascript:"]:after,
    a[href^="#"]:after {
        content: "";
    }
}