/* 全局变量 */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #e74c3c;
    --text-color: #333;
    --light-text: #fff;
    --bg-color: #f8f9fa;
    --border-color: #ddd;
    --border-radius: 4px;
    --box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 顶部导航栏 */
.top-bar {
    background-color: var(--primary-color);
    padding: 10px 0;
}

.top-contact {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.contact-item {
    display: flex;
    align-items: center;
    color: var(--light-text);
    font-size: 14px;
}

.contact-item .icon-location {
    margin-right: 8px;
}

/* 主导航 */
.main-header {
    background-color: var(--light-text);
    box-shadow: var(--box-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo h1 {
    font-size: 24px;
    color: var(--primary-color);
}

.main-nav ul {
    display: flex;
    list-style: none;
}

.main-nav a {
    color: var(--text-color);
    text-decoration: none;
    padding: 10px 15px;
    transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--accent-color);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

/* 主横幅 */
.main-banner {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--light-text);
    padding: 60px 0;
    text-align: center;
}

.banner-content {
    max-width: 800px;
    margin: 0 auto;
}

.banner-text h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.banner-text p {
    font-size: 18px;
    margin-bottom: 30px;
}

.banner-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.banner-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 32px;
    font-weight: bold;
}

.stat-label {
    font-size: 16px;
    opacity: 0.8;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: bold;
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background-color: var(--accent-color);
    color: var(--light-text);
}

.btn-primary:hover {
    background-color: #c0392b;
}

.btn-outline {
    border: 2px solid var(--light-text);
    color: var(--light-text);
}

.btn-outline:hover {
    background-color: var(--light-text);
    color: var(--primary-color);
}

/* 卡片通用样式 */
.service-card,
.solution-card,
.case-card,
.team-card,
.info-card {
    background-color: var(--light-text);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 20px;
    transition: var(--transition);
}

.service-card:hover,
.solution-card:hover,
.case-card:hover,
.team-card:hover,
.info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

/* 服务板块样式 */
.services-section {
    padding: 60px 0;
    background-color: var(--bg-color);
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-color);
    opacity: 0.8;
}

/* 服务标签页 */
.services-tabs {
    margin-top: 30px;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 24px;
    border: none;
    background-color: var(--light-text);
    color: var(--text-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.tab-btn:hover {
    background-color: var(--primary-color);
    color: var(--light-text);
}

.tab-btn.active {
    background-color: var(--accent-color);
    color: var(--light-text);
}

.tab-content {
    position: relative;
}

.service-tab {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.service-tab.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 服务网格 */
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

/* 服务卡片 */
.service-card {
    background-color: var(--light-text);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 25px;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.service-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.service-icon {
    font-size: 24px;
    margin-right: 15px;
    color: var(--accent-color);
}

.service-header h3 {
    font-size: 20px;
    color: var(--primary-color);
    margin: 0;
}

.service-content {
    flex: 1;
}

.service-content p {
    color: var(--text-color);
    margin-bottom: 20px;
    line-height: 1.6;
}

.service-features {
    list-style: none;
    margin: 0;
    padding: 0;
}

.service-features li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
    position: relative;
    padding-left: 25px;
}

.service-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.service-features li:last-child {
    border-bottom: none;
}

.service-footer {
    margin-top: 20px;
    text-align: center;
}

/* 解决方案板块样式 */
.solutions-section {
    padding: 60px 0;
    background-color: var(--bg-color);
}

.solutions-tabs {
    margin-top: 30px;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 24px;
    border: none;
    background-color: var(--light-text);
    color: var(--text-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.tab-btn:hover {
    background-color: var(--primary-color);
    color: var(--light-text);
}

.tab-btn.active {
    background-color: var(--accent-color);
    color: var(--light-text);
}

.tab-content {
    position: relative;
}

.solution-tab {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.solution-tab.active {
    display: block;
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.solution-card {
    background-color: var(--light-text);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 25px;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.solution-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.solution-icon {
    font-size: 24px;
    margin-right: 15px;
    color: var(--accent-color);
}

.solution-header h3 {
    font-size: 20px;
    color: var(--primary-color);
    margin: 0;
}

.solution-content {
    flex: 1;
}

.solution-content p {
    color: var(--text-color);
    margin-bottom: 20px;
    line-height: 1.6;
}

.solution-features {
    list-style: none;
    margin: 0;
    padding: 0;
}

.solution-features li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
    position: relative;
    padding-left: 25px;
}

.solution-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.solution-features li:last-child {
    border-bottom: none;
}

.solution-footer {
    margin-top: 20px;
    text-align: center;
}

/* 案例板块样式 */
.cases-section {
    padding: 60px 0;
    background-color: var(--bg-color);
}

.cases-tabs {
    margin-top: 30px;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 20px;
}

.case-card {
    background-color: var(--light-text);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 25px;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.case-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.case-icon {
    font-size: 24px;
    margin-right: 15px;
    color: var(--accent-color);
}

.case-header h3 {
    font-size: 20px;
    color: var(--primary-color);
    margin: 0;
}

.case-content {
    flex: 1;
}

.case-desc {
    color: var(--text-color);
    margin-bottom: 20px;
    line-height: 1.6;
}

.case-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 20px;
    padding: 15px;
    background-color: rgba(0,0,0,0.02);
    border-radius: var(--border-radius);
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 24px;
    font-weight: bold;
    color: var(--accent-color);
    margin-bottom: 5px;
}

.stat-label {
    display: block;
    font-size: 14px;
    color: var(--text-color);
    opacity: 0.8;
}

.case-features {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.case-features li {
    padding: 8px 12px;
    background-color: rgba(0,0,0,0.02);
    border-radius: var(--border-radius);
    color: var(--text-color);
    font-size: 14px;
    position: relative;
    padding-left: 25px;
}

.case-features li:before {
    content: "✓";
    position: absolute;
    left: 10px;
    color: var(--accent-color);
}

.case-footer {
    margin-top: 20px;
    text-align: center;
}

/* 技术团队样式 */
.team-section {
    padding: 60px 0;
    background-color: var(--bg-color);
}

.team-tabs {
    margin-top: 30px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 20px;
}

.team-card {
    background-color: var(--light-text);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 25px;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.team-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.team-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.team-icon {
    font-size: 32px;
    margin-right: 20px;
    color: var(--accent-color);
}

.team-info {
    flex: 1;
}

.team-info h3 {
    font-size: 20px;
    color: var(--primary-color);
    margin: 0 0 5px 0;
}

.team-title {
    color: var(--text-color);
    font-size: 14px;
    opacity: 0.8;
}

.team-content {
    flex: 1;
}

.team-desc {
    color: var(--text-color);
    margin-bottom: 20px;
    line-height: 1.6;
}

.team-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 20px;
    padding: 15px;
    background-color: rgba(0,0,0,0.02);
    border-radius: var(--border-radius);
}

.team-skills {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.team-skills li {
    padding: 8px 12px;
    background-color: rgba(0,0,0,0.02);
    border-radius: var(--border-radius);
    color: var(--text-color);
    font-size: 14px;
    position: relative;
    padding-left: 25px;
}

.team-skills li:before {
    content: "✓";
    position: absolute;
    left: 10px;
    color: var(--accent-color);
}

.team-footer {
    margin-top: 20px;
    text-align: center;
}

/* 在线咨询样式 */
.contact-section {
    padding: 60px 0;
    background-color: var(--bg-color);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 30px;
    margin-top: 40px;
}

.info-card {
    background-color: var(--light-text);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 25px;
    height: 100%;
}

.info-header {
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.info-header h3 {
    font-size: 20px;
    color: var(--primary-color);
    margin: 0;
}

.service-promises {
    list-style: none;
    margin: 0;
    padding: 0;
}

.service-promises li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
    padding: 15px;
    background-color: rgba(0,0,0,0.02);
    border-radius: var(--border-radius);
}

.promise-icon {
    font-size: 24px;
    margin-right: 15px;
    color: var(--accent-color);
}

.promise-text {
    flex: 1;
}

.promise-text h4 {
    font-size: 16px;
    color: var(--primary-color);
    margin: 0 0 5px 0;
}

.promise-text p {
    font-size: 14px;
    color: var(--text-color);
    margin: 0;
    opacity: 0.8;
}

.contact-form {
    background-color: var(--light-text);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.form-header {
    margin-bottom: 30px;
    text-align: center;
}

.form-header h3 {
    font-size: 24px;
    color: var(--primary-color);
    margin: 0 0 10px 0;
}

.form-header p {
    color: var(--text-color);
    opacity: 0.8;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: bold;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(231, 76, 60, 0.1);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

.form-footer {
    text-align: center;
    margin-top: 30px;
}

.form-note {
    margin-top: 15px;
    color: var(--text-color);
    opacity: 0.8;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .team-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

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

    .team-stats {
        grid-template-columns: repeat(3, 1fr);
    }

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

@media (max-width: 768px) {
    .team-section,
    .contact-section {
        padding: 40px 0;
    }

    .team-card,
    .info-card,
    .contact-form {
        padding: 20px;
    }

    .team-header h3 {
        font-size: 18px;
    }

    .team-desc {
        font-size: 14px;
    }

    .team-stats {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .team-skills {
        grid-template-columns: 1fr;
    }

    .service-promises li {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .promise-icon {
        margin-bottom: 10px;
    }
}

@media (max-width: 576px) {
    .team-icon {
        font-size: 24px;
    }

    .team-skills li {
        font-size: 13px;
        padding: 6px 10px;
    }

    .form-group input,
    .form-group textarea {
        font-size: 14px;
        padding: 10px;
    }
}

/* 触摸设备优化 */
@media (hover: none) {
    .team-card {
        padding: 20px;
    }

    .team-skills li {
        padding: 10px 15px;
    }

    .service-promises li {
        padding: 20px;
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .team-icon,
    .promise-icon {
        font-size: 1.5em;
    }
}

/* 页脚 */
.main-footer {
    background-color: var(--primary-color);
    color: var(--light-text);
    padding: 60px 0 20px;
    margin-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo h2 {
    font-size: 24px;
    margin-bottom: 15px;
}

.footer-links h3,
.footer-contact h3 {
    font-size: 18px;
    margin-bottom: 20px;
}

.footer-links ul {
    list-style: none;
}

.footer-links a {
    color: var(--light-text);
    text-decoration: none;
    display: block;
    padding: 8px 0;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--accent-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-bottom p {
    margin-bottom: 10px;
}

.footer-bottom a {
    color: var(--light-text);
    text-decoration: none;
}

/* 友情链接 */
.friend-links {
    background-color: #f0f0f0;
    padding: 20px 0;
}

.friend-links ul {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    gap: 20px;
}

.friend-links a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.friend-links a:hover {
    color: var(--accent-color);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .section-header h2 {
        font-size: 28px;
    }

    .tab-buttons {
        gap: 15px;
    }

    .tab-btn {
        padding: 10px 20px;
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    .services-section {
        padding: 40px 0;
    }

    .tab-buttons {
        flex-direction: column;
        align-items: center;
    }

    .tab-btn {
        width: 100%;
        max-width: 300px;
        margin-bottom: 10px;
    }

    .service-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .service-card {
        padding: 20px;
    }
}

@media (max-width: 576px) {
    .section-header h2 {
        font-size: 24px;
    }

    .section-header p {
        font-size: 16px;
    }

    .service-header h3 {
        font-size: 18px;
    }

    .service-content p {
        font-size: 14px;
    }

    .service-features li {
        font-size: 14px;
        padding: 8px 0;
    }
}

/* 触摸设备优化 */
@media (hover: none) {
    .tab-btn {
        padding: 15px 25px;
    }

    .service-card {
        padding: 20px;
    }

    .service-features li {
        padding: 12px 0;
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .service-icon,
    .icon-location,
    .icon-menu {
        font-size: 1.5em;
    }
}

/* 解决方案响应式设计 */
@media (max-width: 992px) {
    .solution-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .tab-buttons {
        gap: 15px;
    }

    .tab-btn {
        padding: 10px 20px;
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    .solutions-section {
        padding: 40px 0;
    }

    .tab-buttons {
        flex-direction: column;
        align-items: center;
    }

    .tab-btn {
        width: 100%;
        max-width: 300px;
        margin-bottom: 10px;
    }

    .solution-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .solution-card {
        padding: 20px;
    }
}

@media (max-width: 576px) {
    .solution-header h3 {
        font-size: 18px;
    }

    .solution-content p {
        font-size: 14px;
    }

    .solution-features li {
        font-size: 14px;
        padding: 8px 0;
    }
}

/* 触摸设备优化 */
@media (hover: none) {
    .tab-btn {
        padding: 15px 25px;
    }

    .solution-card {
        padding: 20px;
    }

    .solution-features li {
        padding: 12px 0;
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .solution-icon {
        font-size: 1.5em;
    }
}

/* 案例响应式设计 */
@media (max-width: 992px) {
    .case-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .case-stats {
        grid-template-columns: repeat(3, 1fr);
    }

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

@media (max-width: 768px) {
    .cases-section {
        padding: 40px 0;
    }

    .case-card {
        padding: 20px;
    }

    .case-header h3 {
        font-size: 18px;
    }

    .stat-number {
        font-size: 20px;
    }

    .case-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .case-stats {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .stat-item {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .stat-number {
        margin-bottom: 0;
        margin-right: 10px;
    }

    .case-features li {
        font-size: 13px;
        padding: 6px 10px;
    }
}

/* 触摸设备优化 */
@media (hover: none) {
    .case-card {
        padding: 20px;
    }

    .case-features li {
        padding: 10px 15px;
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .case-icon {
        font-size: 1.5em;
    }
}

/* 移动端优化 */
@media (max-width: 576px) {
    /* 统计数字显示优化 */
    .banner-stats {
        flex-direction: column;
        gap: 1rem;
    }
    .stat-item {
        width: 100%;
        text-align: center;
    }

    /* 按钮布局优化 */
    .banner-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    .banner-buttons .btn {
        width: 100%;
    }

    /* 表单显示优化 */
    .form-group input,
    .form-group textarea {
        font-size: 16px; /* 防止iOS自动缩放 */
    }

    /* 卡片布局优化 */
    .service-card,
    .solution-card,
    .case-card,
    .team-card {
        margin-bottom: 2rem;
    }

    /* 标签页按钮优化 */
    .tab-buttons {
        flex-direction: column;
        gap: 0.5rem;
    }
    .tab-btn {
        width: 100%;
        text-align: center;
    }

    /* 服务承诺列表优化 */
    .service-promises li {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    .promise-icon {
        margin-right: 0;
        margin-bottom: 0.5rem;
    }

    /* 页脚布局优化 */
    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
    .footer-links,
    .footer-contact {
        text-align: center;
    }
    .footer-links ul,
    .footer-contact ul {
        justify-content: center;
    }
}

/* 平板设备优化 */
@media (max-width: 768px) {
    /* 网格布局优化 */
    .service-grid,
    .solution-grid,
    .case-grid,
    .team-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    /* 内容区域优化 */
    .contact-content {
        flex-direction: column;
    }
    .contact-info,
    .contact-form {
        width: 100%;
    }

    /* 导航菜单优化 */
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: #fff;
        padding: 2rem;
        transition: right 0.3s ease;
        z-index: 1000;
        box-shadow: -2px 0 5px rgba(0,0,0,0.1);
    }
    
    .main-nav.active {
        right: 0;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 1.5rem;
        margin-top: 2rem;
    }
    
    .main-nav a {
        display: block;
        padding: 1rem;
        font-size: 1.1rem;
        border-bottom: 1px solid #eee;
    }
    
    /* 移动菜单按钮 */
    .mobile-menu-btn {
        display: block;
        position: fixed;
        top: 1rem;
        right: 1rem;
        z-index: 1001;
        background: var(--primary-color);
        color: #fff;
        border: none;
        padding: 0.5rem;
        border-radius: 4px;
        cursor: pointer;
    }
    
    /* 遮罩层 */
    .nav-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.5);
        z-index: 999;
    }
    
    .nav-overlay.active {
        display: block;
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    /* 图标优化 */
    .icon-shield,
    .icon-lock,
    .icon-bug,
    .icon-menu,
    .icon-location,
    .icon-clock,
    .icon-team,
    .icon-globe,
    .icon-bank,
    .icon-shopping,
    .icon-building,
    .icon-research,
    .icon-code,
    .icon-consulting {
        background-size: contain;
        background-repeat: no-repeat;
    }
}

/* 触摸设备优化 */
@media (hover: none) {
    .btn,
    a {
        min-height: 44px;
        min-width: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .form-group input,
    .form-group textarea {
        font-size: 16px;
        padding: 12px;
    }
}

/* 移动端页脚优化 */
@media (max-width: 576px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-logo {
        margin-bottom: 1rem;
    }
    
    .footer-logo h2 {
        font-size: 1.5rem;
    }
    
    .footer-links h3,
    .footer-contact h3 {
        font-size: 1.2rem;
        margin-bottom: 1rem;
    }
    
    .footer-links ul {
        display: flex;
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .footer-links a {
        padding: 0.5rem 0;
    }
    
    .footer-contact ul {
        display: flex;
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .footer-bottom {
        padding: 1rem 0;
    }
    
    .footer-bottom p {
        font-size: 0.9rem;
        margin-bottom: 0.5rem;
    }
}

/* 触摸设备优化 */
@media (hover: none) {
    .main-nav a {
        padding: 1.2rem;
        min-height: 44px;
    }
    
    .footer-links a,
    .footer-contact a {
        padding: 0.8rem;
        min-height: 44px;
    }
    
    .mobile-menu-btn {
        padding: 1rem;
        min-width: 44px;
        min-height: 44px;
    }
}

.banner-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.banner-image {
    flex: 1 1 0;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.banner-image img {
    max-width: 220px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.10);
}

@media (max-width: 992px) {
    .banner-flex {
        flex-direction: column;
        align-items: center;
        gap: 24px;
    }
    .banner-image {
        justify-content: center;
        margin-top: 16px;
    }
    .banner-image img {
        max-width: 160px;
    }
}

.services-frame {
    background: #fff;
    border: 1.5px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    padding: 20px 28px;
    margin-bottom: 32px;
    font-size: 17px;
    color: var(--primary-color);
    text-align: left;
}

@media (max-width: 576px) {
    .services-frame {
        padding: 12px 8px;
        font-size: 15px;
    }
}

.services-main-row {
    display: flex;
    gap: 32px;
    margin-top: 24px;
    align-items: flex-start;
}
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    flex: 3 1 0;
}
.services-advantage {
    flex: 1 1 320px;
    background: #fff;
    border: 1.5px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    padding: 28px 24px;
    color: var(--primary-color);
    height: fit-content;
    align-self: flex-start;
    margin-top: 0;
}
.services-advantage h3 {
    font-size: 20px;
    margin-bottom: 18px;
    color: var(--accent-color);
}
.services-advantage ul {
    list-style: disc inside;
    padding-left: 0;
    margin: 0;
}
.services-advantage li {
    font-size: 16px;
    margin-bottom: 12px;
    color: var(--text-color);
}
.services-faq {
    background: #fff;
    border: 1.5px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    padding: 28px 24px;
    margin-top: 40px;
}
.services-faq h3 {
    font-size: 20px;
    color: var(--accent-color);
    margin-bottom: 18px;
}
.services-faq ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.services-faq li {
    font-size: 16px;
    margin-bottom: 18px;
    line-height: 1.7;
    color: var(--text-color);
}
.services-faq li strong {
    color: var(--primary-color);
}
.services-faq li span {
    color: #666;
    display: block;
    margin-top: 2px;
}
@media (max-width: 1200px) {
    .services-main-row {
        flex-direction: column;
        gap: 20px;
    }
    .services-advantage {
        width: 100%;
        margin-top: 0;
    }
}
@media (max-width: 992px) {
    .service-grid {
        grid-template-columns: 1fr;
    }
    .services-advantage {
        width: 100%;
        padding: 18px 10px;
    }
    .services-faq {
        padding: 18px 10px;
    }
}