/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
}

body {
    background-color: #fff;
    color: #333;
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: #2ecc71;
    transition: color 0.3s;
}

a:hover {
    color: #27ae60;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
    font-size: 16px;
}

.btn-primary {
    background-color: #2ecc71;
    color: white;
    border: 2px solid #2ecc71;
}

.btn-primary:hover {
    background-color: #27ae60;
    border-color: #27ae60;
    color: white;
}

.btn-secondary {
    background-color: transparent;
    color: #2ecc71;
    border: 2px solid #2ecc71;
}

.btn-secondary:hover {
    background-color: rgba(46, 204, 113, 0.1);
}

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

.section-header h2 {
    font-size: 36px;
    margin-bottom: 15px;
    color: #333;
}

.section-header p {
    font-size: 18px;
    color: #777;
    max-width: 600px;
    margin: 0 auto;
}

/* 导航栏 */
.header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 15px 0;
}

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

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

.logo {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background-color: #2ecc71;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 15px;
}

.logo i {
    color: white;
    font-size: 20px;
}

.logo-container h1 {
    font-size: 20px;
    color: #333;
}

.navigation ul {
    display: flex;
}

.navigation ul li {
    margin-left: 30px;
}

.navigation ul li a {
    color: #555;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

.navigation ul li a.active, 
.navigation ul li a:hover {
    color: #2ecc71;
}

.navigation ul li a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #2ecc71;
}

.mobile-menu-btn {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: #333;
}

/* 主横幅 */
.hero {
    padding: 150px 0 100px;
    background-color: #f9f9f9;
    overflow: hidden;
}

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

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

.hero-content h2 {
    font-size: 44px;
    margin-bottom: 25px;
    color: #333;
    line-height: 1.2;
}

.hero-content p {
    font-size: 18px;
    color: #666;
    margin-bottom: 40px;
}

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

.hero-image {
    flex: 1;
    text-align: center;
    margin-left: 50px;
}

.hero-image img {
    max-height: 600px;
    border-radius: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 产品特色 */
.features {
    padding: 100px 0;
    background-color: white;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.feature-item {
    text-align: center;
    padding: 30px;
    border-radius: 10px;
    background-color: #f9f9f9;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.feature-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(46, 204, 113, 0.1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    color: #2ecc71;
    font-size: 30px;
}

.feature-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.feature-item p {
    color: #666;
    font-size: 16px;
}

/* 应用截图 */
.screenshots {
    padding: 100px 0;
    background-color: #f9f9f9;
}

.screenshot-carousel {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
    overflow-x: auto;
    padding: 20px 0;
}

.screenshot-item {
    flex: 0 0 auto;
    text-align: center;
    transform: scale(0.9);
    transition: transform 0.3s;
}

.screenshot-item:hover {
    transform: scale(1);
}

.screenshot-item img {
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    max-height: 500px;
}

.screenshot-caption {
    margin-top: 15px;
    font-size: 16px;
    color: #555;
}

.carousel-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: #ddd;
    cursor: pointer;
    transition: background-color 0.3s;
}

.carousel-dot.active {
    background-color: #2ecc71;
}

/* 下载区域 */
.download {
    padding: 100px 0;
    background-color: white;
}

.download-options {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 50px;
}

.download-btn {
    display: flex;
    align-items: center;
    padding: 15px 30px;
    background-color: #333;
    color: white;
    border-radius: 10px;
    transition: transform 0.3s, background-color 0.3s;
}

.download-btn:hover {
    transform: translateY(-5px);
    color: white;
}

.download-btn i {
    font-size: 30px;
    margin-right: 15px;
}

.download-text span {
    display: block;
    font-size: 12px;
    opacity: 0.8;
}

.download-text strong {
    font-size: 18px;
}

.download-btn.apple {
    background-color: #000;
}

.download-btn.apple:hover {
    background-color: #333;
}

.download-btn.android {
    background-color: #a4c639;
}

.download-btn.android:hover {
    background-color: #94b130;
}

.download-btn.huawei {
    background-color: #cf0a2c;
}

.download-btn.huawei:hover {
    background-color: #b00926;
}

.qr-code {
    text-align: center;
}

.qr-image {
    margin-bottom: 15px;
}

.qr-image img {
    border-radius: 10px;
}

.qr-code p {
    color: #666;
}

/* 用户评价 */
.testimonials {
    padding: 100px 0;
    background-color: #f9f9f9;
}

.testimonial-carousel {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
}

.testimonial-item {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    max-width: 500px;
}

.testimonial-content {
    margin-bottom: 20px;
}

.testimonial-content p {
    font-size: 18px;
    color: #555;
    line-height: 1.6;
    font-style: italic;
}

.testimonial-user {
    display: flex;
    align-items: center;
}

.user-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 15px;
}

.user-info h4 {
    font-size: 18px;
    margin-bottom: 5px;
    color: #333;
}

.user-info p {
    color: #777;
    margin-bottom: 5px;
}

.rating {
    color: #ffc107;
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background-color: white;
}

.contact-info {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 60px;
}

.contact-item {
    text-align: center;
    flex: 1;
    min-width: 250px;
}

.contact-item i {
    font-size: 40px;
    color: #2ecc71;
    margin-bottom: 20px;
}

.contact-item h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #333;
}

.contact-item p {
    color: #666;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    padding: 40px;
    background-color: #f9f9f9;
    border-radius: 10px;
}

.contact-form h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
    text-align: center;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: #2ecc71;
}

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

.contact-form .btn {
    width: 100%;
}

/* 页脚 */
.footer {
    background-color: #222;
    color: #fff;
    padding: 70px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 50px;
}

.footer-logo {
    flex: 1;
    min-width: 250px;
    margin-bottom: 30px;
}

.footer-logo .logo {
    margin-bottom: 15px;
}

.footer-logo h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.footer-logo p {
    opacity: 0.7;
}

.footer-links {
    flex: 2;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.link-group {
    min-width: 200px;
    margin-bottom: 30px;
}

.link-group h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #fff;
}

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

.link-group ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s;
}

.link-group ul li a:hover {
    color: #2ecc71;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
    transition: background-color 0.3s;
}

.social-links a:hover {
    background-color: #2ecc71;
}

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

.footer-bottom p {
    opacity: 0.7;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-content h2 {
        font-size: 36px;
    }
}

@media (max-width: 768px) {
    .navigation {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero .container {
        flex-direction: column;
    }
    
    .hero-content {
        text-align: center;
        margin-bottom: 40px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image {
        margin-left: 0;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonial-carousel {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-content h2 {
        font-size: 28px;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .download-options {
        flex-direction: column;
    }
    
    .contact-info {
        flex-direction: column;
    }
}