/* 全局样式 */
:root {
    --primary-color: #0066ff;
    --secondary-color: #004ece;
    --accent-color: #ff6633;
    --text-color: #333333;
    --light-text: #666666;
    --bg-color: #ffffff;
    --light-bg: #f8f9fa;
    --border-color: #e5e5e5;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: '微软雅黑', 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', 'SimSun', sans-serif;
    color: var(--text-color);
    font-size: 16px;
    line-height: 1.6;
    background-color: var(--bg-color);
    overflow-x: hidden;
    opacity: 0;
    transition: opacity 0.5s ease;
}

body.loaded {
    opacity: 1;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    opacity: 0;
    transition: opacity 0.5s ease;
    object-fit: contain;
}

img.loaded {
    opacity: 1;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2:after {
    content: '';
    position: absolute;
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}

.section-header p {
    font-size: 1.2rem;
    color: var(--light-text);
    max-width: 700px;
    margin: 0 auto;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 10px 25px;
}

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

/* 顶部导航栏 */
header {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow);
    padding: 15px 0;
    transition: var(--transition);
}

header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo-img {
    max-height: 50px;
    width: auto;
    opacity: 1; /* 覆盖默认图片透明度为1，确保logo立即显示 */
    object-fit: contain;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    margin-left: 15px;
    position: relative;
    padding-left: 15px;
}

.logo-text:before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 70%;
    width: 1px;
    background-color: var(--border-color);
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-color);
}

.logo span {
    color: var(--primary-color);
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    font-size: 1rem;
    font-weight: 500;
    padding: 5px 0;
    position: relative;
}

nav ul li a:after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

nav ul li a:hover:after,
nav ul li a.active:after {
    width: 100%;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--primary-color);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    font-size: 2rem;
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
}

.mobile-menu-btn:hover,
.mobile-menu-btn.active {
    color: var(--primary-color);
}

/* 顶部横幅 */
.hero {
    padding: 150px 0 100px;
    background-color: var(--light-bg);
    position: relative;
    background-image: linear-gradient(120deg, #f8f9fa 0%, #e9effd 100%);
    overflow: hidden;
}

.hero:before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23003f88' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.8;
    z-index: 1;
}

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

.hero-content {
    max-width: 600px;
    position: relative;
    z-index: 2;
    flex: 1;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    position: relative;
    z-index: 2;
}

.preview-container {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
    perspective: 1000px;
}

.preview-image {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    transition: all 0.5s ease;
    opacity: 1;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.main-preview {
    transform: perspective(1000px) rotateY(-5deg);
    z-index: 2;
    position: relative;
    width: 80%;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.second-preview-wrapper {
    position: absolute;
    bottom: -30px;
    right: 0;
    width: 60%;
    z-index: 1;
    transition: all 0.5s ease;
    cursor: pointer;
}

.second-preview {
    position: relative;
    transform: perspective(1000px) rotateY(5deg) translateX(10%);
    border: 4px solid white;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    transition: all 0.5s ease;
    width: 100%;
    z-index: 1;
}

.preview-container:hover .main-preview {
    transform: perspective(1000px) rotateY(-2deg) translateX(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
}

.preview-container:hover .second-preview {
    transform: perspective(1000px) rotateY(2deg) translateX(5%);
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-color);
}

.hero-content h2 {
    font-size: 2rem;
    font-weight: 500;
    margin-bottom: 20px;
    color: var(--light-text);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: var(--light-text);
}

.cta-buttons {
    display: flex;
    gap: 15px;
}

/* 产品服务 */
.products {
    padding: 100px 0;
    background-color: var(--bg-color);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.product-card {
    background-color: var(--light-bg);
    border-radius: 10px;
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.product-card .icon {
    width: 80px;
    height: 80px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.product-card .icon i {
    font-size: 2rem;
    color: white;
}

.product-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.product-card p {
    color: var(--light-text);
}

/* 核心优势 */
.features {
    background-color: var(--light-bg);
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.feature-icon {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.feature-content h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.feature-content p {
    color: var(--light-text);
}

/* 解决方案 */
.solution {
    padding: 100px 0;
    background-color: var(--bg-color);
}

.tab-headers {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 10px;
}

.tab-btn {
    background-color: transparent;
    border: none;
    padding: 12px 25px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--light-text);
    cursor: pointer;
    border-radius: 30px;
    transition: var(--transition);
}

.tab-btn.active {
    background-color: var(--primary-color);
    color: white;
}

.tab-content {
    display: none;
}

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

.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.solution-image img {
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.solution-text h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--text-color);
}

.solution-text p {
    margin-bottom: 25px;
    color: var(--light-text);
}

.solution-text ul {
    margin-bottom: 30px;
}

.solution-text ul li {
    margin-bottom: 12px;
    position: relative;
    padding-left: 30px;
}

.solution-text ul li:before {
    content: '\F633';
    font-family: 'bootstrap-icons';
    color: var(--primary-color);
    position: absolute;
    left: 0;
}

/* 客户评价 */
.testimonials {
    background-color: var(--light-bg);
    padding: 100px 0;
}

.testimonial-slider {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.testimonial {
    background-color: var(--bg-color);
    border-radius: 10px;
    padding: 40px;
    max-width: 350px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.testimonial:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.quote {
    font-size: 1.1rem;
    font-style: italic;
    color: var(--text-color);
    margin-bottom: 30px;
    position: relative;
}

.quote:before {
    content: '\F4AD';
    font-family: 'bootstrap-icons';
    font-size: 2rem;
    color: var(--primary-color);
    opacity: 0.2;
    position: absolute;
    top: -25px;
    left: -10px;
}

.client {
    display: flex;
    align-items: center;
}

.client-info h4 {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 5px;
}

.client-info p {
    font-size: 0.9rem;
    color: var(--light-text);
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background-color: var(--bg-color);
}

.contact-content {
    display: flex;
    justify-content: center;
}

.contact-info {
    display: flex;
    flex-direction: column;
    max-width: 800px;
    margin: 0 auto;
}

.contact-qr-section {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 200px;
}

.info-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.info-item > div {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.info-item h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
    color: var(--text-color);
}

.info-item p {
    color: var(--light-text);
    margin-bottom: 10px;
}

.qr-code {
    width: 150px;
    height: 150px;
    margin-top: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    opacity: 1;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.qr-code:hover {
    transform: scale(1.05);
    border: 2px solid var(--primary-color);
    box-shadow: 0 5px 15px rgba(0, 102, 255, 0.2);
}

.social-media {
    display: flex;
    gap: 25px;
    margin-top: 40px;
    justify-content: center;
}

.social-media a {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--light-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.social-media a:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-8px);
    box-shadow: 0 8px 15px rgba(0, 102, 255, 0.2);
}

.contact-form {
    background-color: var(--light-bg);
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(51, 102, 255, 0.1);
}

/* 页脚 */
footer {
    background-color: #1a1a2e;
    color: #f5f5f5;
    padding: 80px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.footer-logo-img {
    max-height: 50px;
    width: auto;
    margin-bottom: 15px;
    opacity: 1; /* 确保logo立即显示 */
    object-fit: contain;
}

.footer-logo h2 {
    font-size: 2rem;
    margin-bottom: 15px;
}

.footer-logo span {
    color: var(--primary-color);
}

.footer-logo p {
    color: #a0a0a0;
    text-align: center;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.link-group h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #f5f5f5;
    position: relative;
    padding-bottom: 10px;
}

.link-group h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--primary-color);
}

.link-group ul li {
    margin-bottom: 10px;
}

.link-group ul li a {
    color: #a0a0a0;
    transition: var(--transition);
}

.link-group ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

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

.copyright p {
    font-size: 0.9rem;
    color: #a0a0a0;
}

.copyright p a {
    color: #a0a0a0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.copyright p a:hover {
    color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-wrapper {
        flex-direction: column;
    }
    
    .hero-content {
        text-align: center;
        margin-bottom: 30px;
    }
    
    .hero-image {
        justify-content: center;
    }
    
    .preview-container {
        max-width: 90%;
        margin: 0 auto;
    }
    
    .main-preview {
        transform: perspective(1000px) rotateY(0deg);
    }
    
    .second-preview {
        bottom: -20px;
        right: 5%;
        width: 50%;
    }
    
    .hero-content h1 {
        font-size: 2.8rem;
    }
    
    .hero-content h2 {
        font-size: 1.8rem;
    }
    
    .solution-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .social-media {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    header {
        padding: 10px 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .logo-text {
        font-size: 1.1rem;
        margin-left: 10px;
        padding-left: 10px;
    }
    
    nav ul {
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: white;
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
        padding: 20px 0;
        display: none;
    }
    
    nav ul.active {
        display: block;
    }
    
    nav ul li {
        margin: 0 0 15px;
        text-align: center;
    }
    
    .hero {
        padding: 120px 0 70px;
    }
    
    .preview-container {
        max-width: 100%;
    }
    
    .main-preview,
    .second-preview {
        transform: none;
        border: 1px solid rgba(0, 0, 0, 0.05);
    }
    
    .second-preview-wrapper {
        bottom: -15px;
        right: 0;
        width: 45%;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .features-grid,
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-image {
        order: 2;
    }
    
    .solution-text {
        order: 1;
    }
    
    .qr-code {
        width: 130px;
        height: 130px;
    }
    
    .hero-content h1 {
        font-size: 2.2rem;
    }
    
    .hero-content h2 {
        font-size: 1.5rem;
    }
    
    .second-preview-wrapper:hover .second-preview {
        transform: scale(1.3) translateY(-10%);
    }
}

@media (max-width: 576px) {
    .cta-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .logo-text {
        font-size: 0.9rem;
        /* 在极小屏幕下可以考虑隐藏文字 */
        /* display: none; */
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .testimonial-slider {
        flex-direction: column;
        align-items: center;
    }
    
    .qr-code {
        width: 150px;
        height: 150px;
        margin: 10px auto;
    }
    
    .contact-qr-section {
        flex-direction: column;
        align-items: center;
        gap: 30px;
    }
    
    .info-item {
        max-width: 100%;
        width: 100%;
        flex-direction: column;
        align-items: center;
        text-align: center;
        margin-bottom: 10px;
    }
    
    .qr-code {
        width: 150px;
        height: 150px;
    }
    
    .hero {
        padding: 100px 0 50px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content h2 {
        font-size: 1.3rem;
    }
    
    .preview-container {
        max-width: 100%;
        margin-top: 20px;
    }
    
    .main-preview {
        transform: none;
        width: 85%;
        border: 1px solid rgba(0, 0, 0, 0.05);
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }
    
    .second-preview-wrapper {
        bottom: -10px;
        right: 0;
        width: 45%;
    }
    
    .second-preview-wrapper:hover .second-preview {
        transform: scale(1.4) translateY(-20%) translateX(-20%);
    }
    
    .second-preview {
        transform: none;
        border: 3px solid white;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }
    
    .preview-hint {
        font-size: 10px;
        bottom: 10px;
        opacity: 0.8;
    }
}

/* 功能特性卡片 */
.advantages {
    padding: 100px 0;
    background-color: var(--light-bg);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.advantage-card {
    background-color: var(--bg-color);
    border-radius: 10px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.advantage-icon {
    width: 70px;
    height: 70px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.advantage-icon i {
    font-size: 2rem;
    color: white;
}

.advantage-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.advantage-card p {
    margin-bottom: 20px;
    color: var(--light-text);
}

.advantage-card ul {
    margin-left: 20px;
}

.advantage-card ul li {
    margin-bottom: 10px;
    position: relative;
    list-style-type: disc;
    color: var(--light-text);
}

/* 下载区域 */
.download {
    padding: 100px 0;
    background-color: var(--bg-color);
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.download-info h3 {
    font-size: 2rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.download-info p {
    font-size: 1.1rem;
    color: var(--light-text);
    margin-bottom: 25px;
}

.download-info ul {
    margin-bottom: 30px;
}

.download-info ul li {
    margin-bottom: 12px;
    position: relative;
    padding-left: 30px;
}

.download-info ul li:before {
    content: '\F633';
    font-family: 'bootstrap-icons';
    color: var(--primary-color);
    position: absolute;
    left: 0;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
}

.download-image img {
    border-radius: 10px;
    box-shadow: var(--shadow);
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    opacity: 1; /* 确保图片立即显示，不受默认透明度影响 */
    transition: transform 0.3s ease;
}

.download-image img:hover {
    transform: scale(1.02); /* 鼠标悬停时轻微放大效果 */
}

/* 社区区域 */
.community {
    padding: 100px 0;
    background-color: var(--light-bg);
}

.community-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.community-card {
    background-color: var(--bg-color);
    border-radius: 10px;
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.community-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.community-icon {
    width: 80px;
    height: 80px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.community-icon i {
    font-size: 2rem;
    color: white;
}

.community-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.community-card p {
    margin-bottom: 20px;
    color: var(--light-text);
}

/* 响应式调整 */
@media (max-width: 992px) {
    .download-content {
        grid-template-columns: 1fr;
    }
    
    .download-image {
        grid-row: 1;
    }
    
    .download-info {
        grid-row: 2;
    }
}

@media (max-width: 768px) {
    .advantages-grid {
        grid-template-columns: 1fr;
    }
}

.preview-hint {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 102, 255, 0.8);
    color: white;
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 12px;
    opacity: 0;
    transition: all 0.3s ease;
    white-space: nowrap;
    z-index: 2;
}

.second-preview-wrapper:hover .preview-hint {
    opacity: 1;
}

.preview-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0);
    z-index: 5;
    visibility: hidden;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
}

.second-preview-wrapper:hover ~ .preview-overlay {
    visibility: visible;
    opacity: 1;
    background: rgba(0, 0, 0, 0.5);
}

.second-preview-wrapper:hover {
    z-index: 10;
}

.second-preview-wrapper:hover .second-preview {
    transform: scale(1.5) translateY(-20%) translateX(-10%);
    border: 4px solid white;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    z-index: 10;
}