/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 通用标题样式 */
.section-title {
    text-align: center;
    margin-bottom: 30px;
}

.section-title h2 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 2px;
    background: #4a90e2;
    border-radius: 2px;
}

.section-title p {
    font-size: 1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* 导航栏样式 */
.nav-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.nav-menu.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.nav-logo span {
    font-size: 1.8rem;
    font-weight: 600;
    color: #4a90e2;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    color: #333;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: color 0.3s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #4a90e2;
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: #4a90e2;
}

.nav-links a:hover::after {
    width: 100%;
}

/* 主横幅区域 */
.hero {
    padding: 100px 0 50px;
    background: linear-gradient(135deg, #4a90e2 0%, #357abd 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.hero-text {
    flex: 1;
    max-width: 600px;
}

.hero-text h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-text p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    line-height: 1.6;
    opacity: 0.9;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 500px;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    animation: floating 3s ease-in-out infinite;
}

@keyframes floating {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

/* 特点板块 */
.features {
    padding: 50px 0;
    background: #fff;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-subtitle {
    color: #666;
    font-size: 1.1rem;
    margin-top: 10px;
}

/* 框架结构 */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}

.col {
    padding: 0 15px;
    margin-bottom: 30px;
}

/* 大屏幕 (1200px以上) */
@media (min-width: 1200px) {
    .col {
        flex: 0 0 33.333333%;
        max-width: 33.333333%;
    }
}

/* 中等屏幕 (992px - 1199px) */
@media (min-width: 992px) and (max-width: 1199px) {
    .col {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

/* 平板 (768px - 991px) */
@media (min-width: 768px) and (max-width: 991px) {
    .col {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

/* 手机 (480px - 767px) */
@media (min-width: 480px) and (max-width: 767px) {
    .col {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

/* 小屏手机 (480px以下) */
@media (max-width: 479px) {
    .col {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

/* 卡片响应式调整 */
.feature-card,
.download-card,
.advantage-card,
.guide-card,
.faq-card,
.news-card {
    margin-bottom: 20px;
    padding: 20px;
}

.feature-content,
.download-content,
.advantage-content,
.guide-content,
.faq-content,
.news-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.feature-description,
.download-description,
.advantage-description,
.guide-description,
.faq-item p,
.news-description {
    flex: 1;
}

/* 移动端间距优化 */
@media (max-width: 767px) {
    .row {
        margin: 0 -10px;
    }
    
    .col {
        padding: 0 10px;
        margin-bottom: 20px;
    }
    
    .feature-card,
    .download-card,
    .advantage-card,
    .guide-card,
    .faq-card,
    .news-card {
        margin-bottom: 0;
    }
}

@media (max-479px) {
    .row {
        margin: 0 -7.5px;
    }
    
    .col {
        padding: 0 7.5px;
        margin-bottom: 15px;
    }
}

/* 移动端内容布局优化 */
@media (max-width: 767px) {
    .feature-icon,
    .download-icon,
    .advantage-icon,
    .guide-icon,
    .faq-icon,
    .news-icon {
        margin: 0 auto 15px;
    }
    
    .feature-content,
    .download-content,
    .advantage-content,
    .guide-content,
    .faq-content,
    .news-content {
        text-align: center;
    }
    
    .feature-features,
    .download-features,
    .advantage-features,
    .guide-steps,
    .faq-item,
    .news-features {
        text-align: left;
    }
    
    .feature-features li,
    .download-features li,
    .advantage-features li,
    .guide-steps li,
    .faq-item li,
    .news-features li {
        padding-left: 25px;
    }
    
    .feature-features li::before,
    .download-features li::before,
    .advantage-features li::before,
    .guide-steps li::before,
    .faq-item li::before,
    .news-features li::before {
        left: 5px;
    }
}

/* 移动端按钮优化 */
@media (max-width: 767px) {
    .download-actions {
        flex-direction: column;
        gap: 10px;
    }
    
    .download-btn {
        width: 100%;
    }
}

/* 移动端标签优化 */
@media (max-width: 767px) {
    .news-tag {
        position: static;
        display: inline-block;
        margin-bottom: 10px;
    }
}

.feature-card {
    background: #fff;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
    border: 2px solid #e8e8e8;
    position: relative;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 1px solid #4a90e2;
    border-radius: 15px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    border-color: #4a90e2;
}

.feature-card:hover::before {
    opacity: 0.3;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #4a90e2, #357abd);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.feature-icon .icon {
    font-size: 28px;
    color: #fff;
}

.feature-content h3 {
    color: #333;
    font-size: 1.4rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.feature-description {
    color: #666;
    font-size: 1rem;
    margin-bottom: 20px;
    line-height: 1.5;
}

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

.feature-list li {
    color: #555;
    font-size: 0.95rem;
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.feature-list li:before {
    content: "✓";
    color: #4a90e2;
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* 下载中心 */
.download-section {
    padding: 50px 0;
    background: #f8f9fa;
}

.download-section .section-header {
    text-align: center;
    margin-bottom: 50px;
}

.download-section .section-subtitle {
    color: #666;
    font-size: 1.1rem;
    margin-top: 10px;
}

.download-card {
    background: #fff;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
    border: 2px solid #e8e8e8;
    position: relative;
}

.download-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 1px solid #4a90e2;
    border-radius: 15px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    border-color: #4a90e2;
}

.download-card:hover::before {
    opacity: 0.3;
}

.download-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #4a90e2, #357abd);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.download-icon .icon {
    font-size: 28px;
    color: #fff;
}

.download-content h3 {
    color: #333;
    font-size: 1.4rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.version {
    color: #4a90e2;
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 15px;
}

.download-description {
    color: #666;
    font-size: 1rem;
    margin-bottom: 20px;
    line-height: 1.5;
}

.download-features {
    list-style: none;
    padding: 0;
    margin: 0 0 25px 0;
}

.download-features li {
    color: #555;
    font-size: 0.95rem;
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.download-features li:before {
    content: "✓";
    color: #4a90e2;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.download-actions {
    margin-top: auto;
    display: flex;
    gap: 10px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    backdrop-filter: blur(5px);
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.download-btn i {
    margin-right: 8px;
    font-size: 1.2rem;
}

.download-btn.android {
    background: linear-gradient(135deg, #3DDC84 0%, #2BB673 100%);
    border: none;
}

.download-btn.ios {
    background: linear-gradient(135deg, #007AFF 0%, #0055FF 100%);
    border: none;
}

.download-btn.windows {
    background: linear-gradient(135deg, #00A4EF 0%, #0078D4 100%);
    border: none;
}

.download-btn.android:hover,
.download-btn.ios:hover,
.download-btn.windows:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    filter: brightness(1.1);
}

/* 使用指南 */
.guide {
    padding: 50px 0;
    background: #f8f9fa;
}

.guide .section-header {
    text-align: center;
    margin-bottom: 50px;
}

.guide .section-subtitle {
    color: #666;
    font-size: 1.1rem;
    margin-top: 10px;
}

.guide-card {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    height: 100%;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    border: 2px solid #e8e8e8;
    position: relative;
    transition: all 0.3s ease;
}

.guide-card::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    border: 1px solid #e8e8e8;
    border-radius: 8px;
    pointer-events: none;
}

.guide-card:hover {
    transform: translateY(-5px);
    border-color: #4a90e2;
    box-shadow: 0 8px 25px rgba(74,144,226,0.1);
}

.guide-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #4a90e2, #357abd);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    position: relative;
}

.guide-icon::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 14px;
}

.guide-icon .icon {
    font-size: 28px;
    color: #fff;
}

.guide-content h3 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 15px;
}

.guide-description {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.5;
}

.guide-steps {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
}

.guide-steps li {
    color: #555;
    font-size: 0.9rem;
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
    line-height: 1.4;
}

.guide-steps li::before {
    content: '•';
    color: #4a90e2;
    position: absolute;
    left: 0;
    font-size: 1.2rem;
}

.guide-tip {
    background: #f8f9fa;
    padding: 12px 15px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tip-icon {
    color: #4a90e2;
    font-size: 1.1rem;
}

.tip-text {
    color: #666;
    font-size: 0.9rem;
}

/* 常见问题 */
.faq {
    padding: 50px 0;
    background: #fff;
}

.faq .section-header {
    text-align: center;
    margin-bottom: 50px;
}

.faq .section-subtitle {
    color: #666;
    font-size: 1.1rem;
    margin-top: 10px;
}

.faq-card {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    height: 100%;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    border: 2px solid #e8e8e8;
    position: relative;
    transition: all 0.3s ease;
}

.faq-card::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    border: 1px solid #e8e8e8;
    border-radius: 8px;
    pointer-events: none;
}

.faq-card:hover {
    transform: translateY(-5px);
    border-color: #4a90e2;
    box-shadow: 0 8px 25px rgba(74,144,226,0.1);
}

.faq-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #4a90e2, #357abd);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    position: relative;
}

.faq-icon::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 14px;
}

.faq-icon .icon {
    font-size: 28px;
    color: #fff;
}

.faq-content h3 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 20px;
}

.faq-item {
    margin-bottom: 20px;
}

.faq-item h4 {
    font-size: 1.1rem;
    color: #444;
    margin-bottom: 10px;
}

.faq-item p {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.5;
}

.faq-tip {
    background: #f8f9fa;
    padding: 12px 15px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
}

.tip-icon {
    color: #4a90e2;
    font-size: 1.1rem;
}

.tip-text {
    color: #666;
    font-size: 0.9rem;
}

/* 最新动态 */
.news {
    padding: 50px 0;
    background: #f8f9fa;
}

.news .section-header {
    text-align: center;
    margin-bottom: 50px;
}

.news .section-subtitle {
    color: #666;
    font-size: 1.1rem;
    margin-top: 10px;
}

.news-card {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    height: 100%;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    border: 2px solid #e8e8e8;
    position: relative;
    transition: all 0.3s ease;
}

.news-card::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    border: 1px solid #e8e8e8;
    border-radius: 8px;
    pointer-events: none;
}

.news-card:hover {
    transform: translateY(-5px);
    border-color: #4a90e2;
    box-shadow: 0 8px 25px rgba(74,144,226,0.1);
}

.news-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #4a90e2, #357abd);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    position: relative;
}

.news-icon::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 14px;
}

.news-icon .icon {
    font-size: 28px;
    color: #fff;
}

.news-content {
    position: relative;
}

.news-date {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.news-content h3 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 15px;
}

.news-description {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.5;
}

.news-features {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
}

.news-features li {
    color: #555;
    font-size: 0.9rem;
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
    line-height: 1.4;
}

.news-features li::before {
    content: '•';
    color: #4a90e2;
    position: absolute;
    left: 0;
    font-size: 1.2rem;
}

.news-tag {
    position: absolute;
    top: 0;
    right: 0;
    background: #4a90e2;
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* CTA区域样式 */
.cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #0088cc, #00a8ff);
    color: white;
    text-align: center;
}

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

.cta p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    justify-content: center;
}

/* 页脚样式 */
.footer {
    background-color: #333;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    color: #fff;
    margin-bottom: 20px;
}

.footer-section p {
    color: #ccc;
    margin-bottom: 10px;
}

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

/* 响应式设计优化 */
@media (max-width: 1200px) {
    .container {
        padding: 0 20px;
    }
    
    .row {
        margin: 0 -10px;
    }
    
    .col {
        padding: 0 10px;
    }
}

@media (max-width: 992px) {
    .section-title {
        margin-bottom: 25px;
    }

    .section-title h2 {
        font-size: 1.8rem;
    }

    .hero {
        padding: 80px 0 40px;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .hero-text p {
        font-size: 1.1rem;
    }

    .hero-image {
        max-width: 400px;
    }

    .features,
    .download-section,
    .advantages,
    .guide,
    .faq,
    .news {
        padding: 40px 0;
    }

    .feature-card {
        padding: 25px;
    }

    .feature-icon {
        width: 50px;
        height: 50px;
    }

    .feature-icon .icon {
        font-size: 24px;
    }

    .download-card {
        padding: 25px;
    }

    .download-icon {
        width: 50px;
        height: 50px;
    }

    .download-icon .icon {
        font-size: 24px;
    }

    .advantage-card {
        padding: 25px;
    }

    .advantage-icon {
        width: 50px;
        height: 50px;
    }

    .advantage-icon .icon {
        font-size: 24px;
    }

    .guide-card {
        padding: 25px;
    }

    .guide-icon {
        width: 50px;
        height: 50px;
    }

    .guide-icon .icon {
        font-size: 24px;
    }

    .faq-card {
        padding: 25px;
    }

    .faq-icon {
        width: 50px;
        height: 50px;
    }

    .faq-icon .icon {
        font-size: 24px;
    }

    .news-card {
        padding: 25px;
    }

    .news-icon {
        width: 50px;
        height: 50px;
    }

    .news-icon .icon {
        font-size: 24px;
    }
}

@media (max-width: 768px) {
    .nav-container {
        height: 60px;
    }

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

    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        padding: 20px;
        flex-direction: column;
        gap: 15px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-links a {
        width: 100%;
        text-align: center;
        padding: 12px 0;
        border-bottom: 1px solid #eee;
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    .nav-links a::after {
        display: none;
    }

    .nav-logo span {
        font-size: 1.5rem;
    }

    .hero {
        padding: 70px 0 35px;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }

    .hero-text {
        max-width: 100%;
    }

    .hero-text h1 {
        font-size: 2.2rem;
        margin-bottom: 15px;
    }

    .hero-text p {
        font-size: 1rem;
        margin-bottom: 25px;
    }

    .section-title {
        margin-bottom: 20px;
    }

    .section-title h2 {
        font-size: 1.6rem;
    }

    .features,
    .download-section,
    .advantages,
    .guide,
    .faq,
    .news {
        padding: 35px 0;
    }

    .feature-card,
    .download-card,
    .advantage-card,
    .guide-card,
    .faq-card,
    .news-card {
        margin-bottom: 15px;
        padding: 15px;
    }

    .feature-content h3 {
        font-size: 1.2rem;
    }

    .download-content h3 {
        font-size: 1.2rem;
    }

    .advantage-content h3 {
        font-size: 1.2rem;
    }

    .guide-content h3 {
        font-size: 1.2rem;
    }

    .faq-content h3 {
        font-size: 1.2rem;
    }

    .news-content h3 {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .nav-container {
        padding: 0 15px;
    }

    .nav-logo span {
        font-size: 1.3rem;
    }

    .nav-links {
        padding: 15px;
    }

    .nav-links a {
        font-size: 0.95rem;
        padding: 10px 0;
    }

    .hero {
        padding: 60px 0 30px;
    }

    .hero-content {
        padding: 0 15px;
        gap: 20px;
    }

    .hero-text h1 {
        font-size: 1.8rem;
        margin-bottom: 12px;
    }

    .hero-text p {
        font-size: 0.95rem;
        margin-bottom: 20px;
        line-height: 1.5;
    }

    .section-title {
        margin-bottom: 15px;
    }

    .section-title h2 {
        font-size: 1.4rem;
    }

    .section-title p {
        font-size: 0.9rem;
    }

    .features,
    .download-section,
    .advantages,
    .guide,
    .faq,
    .news {
        padding: 30px 0;
    }

    .feature-card,
    .download-card,
    .advantage-card,
    .guide-card,
    .faq-card,
    .news-card {
        margin-bottom: 12px;
        padding: 12px;
    }

    .feature-icon {
        width: 45px;
        height: 45px;
        margin-bottom: 15px;
    }

    .feature-icon .icon {
        font-size: 20px;
    }

    .feature-content h3 {
        font-size: 1.1rem;
    }

    .feature-description {
        font-size: 0.9rem;
    }

    .download-icon {
        width: 45px;
        height: 45px;
        margin-bottom: 15px;
    }

    .download-icon .icon {
        font-size: 20px;
    }

    .download-content h3 {
        font-size: 1.1rem;
    }

    .download-description {
        font-size: 0.9rem;
    }

    .advantage-icon {
        width: 45px;
        height: 45px;
        margin-bottom: 15px;
    }

    .advantage-icon .icon {
        font-size: 20px;
    }

    .advantage-content h3 {
        font-size: 1.1rem;
    }

    .advantage-description {
        font-size: 0.9rem;
    }

    .guide-icon {
        width: 45px;
        height: 45px;
        margin-bottom: 15px;
    }

    .guide-icon .icon {
        font-size: 20px;
    }

    .guide-content h3 {
        font-size: 1.1rem;
    }

    .guide-description {
        font-size: 0.9rem;
    }

    .faq-icon {
        width: 45px;
        height: 45px;
        margin-bottom: 15px;
    }

    .faq-icon .icon {
        font-size: 20px;
    }

    .faq-content h3 {
        font-size: 1.1rem;
    }

    .faq-item h4 {
        font-size: 0.95rem;
    }

    .faq-item p {
        font-size: 0.9rem;
    }

    .news-icon {
        width: 45px;
        height: 45px;
        margin-bottom: 15px;
    }

    .news-icon .icon {
        font-size: 20px;
    }

    .news-content h3 {
        font-size: 1.1rem;
    }

    .news-description {
        font-size: 0.9rem;
    }

    .news-features li {
        font-size: 0.85rem;
    }
}

/* 移动端按钮优化 */
@media (max-width: 767px) {
    .download-actions {
        flex-direction: column;
        gap: 10px;
    }
    
    .download-btn {
        width: 100%;
    }
}

/* 移动端标签优化 */
@media (max-width: 767px) {
    .news-tag {
        position: static;
        display: inline-block;
        margin-bottom: 10px;
    }
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 3px;
    background: #333;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* 响应式导航 */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        padding: 20px;
        flex-direction: column;
        gap: 15px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-links a {
        width: 100%;
        text-align: center;
        padding: 12px 0;
        border-bottom: 1px solid #eee;
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    .nav-links a::after {
        display: none;
    }

    .nav-logo span {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 15px;
    }

    .nav-logo span {
        font-size: 1.3rem;
    }

    .nav-links {
        padding: 15px;
    }

    .nav-links a {
        font-size: 0.95rem;
        padding: 10px 0;
    }
}

/* 下载按钮样式 */
.download-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    backdrop-filter: blur(5px);
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.download-btn i {
    margin-right: 8px;
    font-size: 1.2rem;
}

.download-btn.android {
    background: linear-gradient(135deg, #3DDC84 0%, #2BB673 100%);
    border: none;
}

.download-btn.ios {
    background: linear-gradient(135deg, #007AFF 0%, #0055FF 100%);
    border: none;
}

.download-btn.windows {
    background: linear-gradient(135deg, #00A4EF 0%, #0078D4 100%);
    border: none;
}

.download-btn.android:hover,
.download-btn.ios:hover,
.download-btn.windows:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    filter: brightness(1.1);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .download-buttons {
        justify-content: center;
    }

    .download-btn {
        padding: 10px 20px;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .download-buttons {
        flex-direction: column;
        width: 100%;
    }

    .download-btn {
        width: 100%;
        justify-content: center;
        padding: 12px 20px;
    }
}

.advantages {
    padding: 50px 0;
    background-color: #f8f9fa;
}

.advantage-card {
    background: #fff;
    border-radius: 10px;
    padding: 30px;
    height: 100%;
    position: relative;
    border: 2px solid #e8e8e8;
    transition: all 0.3s ease;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    border: 1px solid #e8e8e8;
    border-radius: 8px;
    pointer-events: none;
}

.advantage-card:hover {
    transform: translateY(-5px);
    border-color: #4a90e2;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.advantage-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #4a90e2, #357abd);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    position: relative;
}

.advantage-icon::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    right: 2px;
    bottom: 2px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 10px;
    pointer-events: none;
}

.advantage-icon i {
    font-size: 24px;
    color: #fff;
}

.advantage-content h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #333;
}

.advantage-content p {
    color: #666;
    margin-bottom: 15px;
    line-height: 1.6;
}

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

.advantage-features li {
    color: #666;
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
}

.advantage-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #4a90e2;
}

@media (max-width: 992px) {
    .advantage-card {
        padding: 25px;
    }
    
    .advantage-icon {
        width: 50px;
        height: 50px;
    }
    
    .advantage-icon i {
        font-size: 20px;
    }
}

@media (max-width: 768px) {
    .advantages {
        padding: 40px 0;
    }
    
    .advantage-card {
        padding: 20px;
    }
    
    .advantage-content h3 {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .advantages {
        padding: 30px 0;
    }
    
    .advantage-card {
        padding: 15px;
    }
    
    .advantage-icon {
        width: 40px;
        height: 40px;
        margin-bottom: 15px;
    }
    
    .advantage-icon i {
        font-size: 18px;
    }
    
    .advantage-content h3 {
        font-size: 1rem;
    }
}