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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

a {
    text-decoration: none;
    color: #3498db;
    transition: color 0.3s ease;
}

a:hover {
    color: #2980b9;
}

ul, ol {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn.primary {
    background-color: #3498db;
    color: #fff;
    border: 1px solid #3498db;
}

.btn.primary:hover {
    background-color: #2980b9;
    border-color: #2980b9;
}

.btn.secondary {
    background-color: transparent;
    color: #3498db;
    border: 1px solid #3498db;
}

.btn.secondary:hover {
    background-color: #f0f8ff;
}

.btn-link {
    display: inline-block;
    color: #3498db;
    font-weight: 500;
    position: relative;
}

.btn-link:after {
    content: '→';
    margin-left: 5px;
    transition: margin 0.3s ease;
}

.btn-link:hover:after {
    margin-left: 10px;
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 15px;
    color: #222;
}

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

.section-header h2 {
    font-size: 36px;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: #3498db;
}

.section-header p {
    font-size: 18px;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
}

/* 导航栏 */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

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

.logo a {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
    color: #333;
}

.logo svg {
    margin-right: 10px;
}

nav ul {
    display: flex;
}

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

nav ul li a {
    color: #333;
    font-weight: 500;
    padding: 10px 0;
    position: relative;
}

nav ul li a:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #3498db;
    transition: width 0.3s ease;
}

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

/* 横幅区域 */
.banner {
    background: linear-gradient(135deg, #3498db, #1a5276);
    color: #fff;
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.banner:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><polygon fill="rgba(255,255,255,0.05)" points="0,100 100,0 100,100"/></svg>');
    background-size: cover;
}

.banner h1 {
    font-size: 48px;
    margin-bottom: 20px;
    color: #fff;
}

.banner p {
    font-size: 20px;
    max-width: 800px;
    margin: 0 auto 40px;
}

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

/* 服务模块 */
.services {
    padding: 80px 0;
    background-color: #fff;
}

.service-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 30px;
}

.card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card h3 {
    padding: 20px 20px 10px;
    font-size: 20px;
}

.card p {
    padding: 0 20px 20px;
    color: #666;
}

.card .btn-link {
    margin: 0 20px 20px;
    display: inline-block;
}

/* 技术优势 */
.advantages {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.advantage-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
}

.advantage-item .icon {
    width: 60px;
    height: 60px;
    background-color: #e6f3ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.advantage-item .icon i {
    font-size: 30px;
    color: #3498db;
}

.advantage-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

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

/* 案例展示 */
.case-studies {
    padding: 80px 0;
    background-color: #fff;
}

.case-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.case-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.case-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.case-content {
    padding: 20px;
}

.case-content h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.case-content p {
    color: #666;
    margin-bottom: 20px;
}

.case-stats {
    display: flex;
    justify-content: space-around;
    padding-top: 15px;
    border-top: 1px solid #eee;
}

.stat {
    text-align: center;
}

.stat .value {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: #3498db;
}

.stat .label {
    font-size: 14px;
    color: #666;
}

/* 技术文章 */
.articles {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.article-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

.article-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
}

.article-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.article-content {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.article-content h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.article-content p {
    color: #666;
    margin-bottom: 20px;
    flex-grow: 1;
}

.read-more {
    align-self: flex-start;
    padding: 8px 16px;
    background-color: #3498db;
    color: #fff;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.read-more:hover {
    background-color: #2980b9;
    color: #fff;
}

/* APP下载模块 */
.app-download {
    padding: 80px 0;
    background: linear-gradient(135deg, #3498db, #1a5276);
    color: #fff;
}

.app-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.app-info {
    flex: 1;
}

.app-info h2 {
    font-size: 36px;
    margin-bottom: 20px;
    color: #fff;
}

.app-info p {
    font-size: 18px;
    margin-bottom: 30px;
}

.app-features {
    margin-bottom: 30px;
}

.app-features li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 25px;
}

.app-features li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #fff;
    font-weight: bold;
}

.download-buttons {
    display: flex;
    gap: 20px;
}

.download-btn {
    display: flex;
    align-items: center;
    background-color: #fff;
    color: #333;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.download-btn:hover {
    background-color: #f0f0f0;
    color: #333;
}

.download-btn i {
    margin-right: 10px;
    font-size: 24px;
}

.app-image {
    flex: 1;
    text-align: center;
}

.app-image img {
    max-width: 100%;
    max-height: 500px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

/* 客户评价 */
.testimonials {
    padding: 80px 0;
    background-color: #fff;
}

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

.testimonial-item {
    background-color: #f9f9f9;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    width: 100%;
    max-width: 400px;
    transition: transform 0.3s ease;
}

.testimonial-item:hover {
    transform: translateY(-5px);
}

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

.testimonial-content p {
    font-style: italic;
    color: #555;
}

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

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin-right: 15px;
}

.author-info h4 {
    margin-bottom: 5px;
}

.author-info p {
    color: #666;
    font-size: 14px;
}

/* 联系我们 */
.contact-us {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.contact-content {
    display: flex;
    gap: 50px;
}

.contact-info {
    flex: 1;
}

.info-item {
    display: flex;
    margin-bottom: 30px;
}

.info-item i {
    font-size: 24px;
    color: #3498db;
    margin-right: 15px;
}

.info-item h4 {
    margin-bottom: 5px;
}

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

.contact-form {
    flex: 1;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
    font-size: 16px;
}

.form-group textarea {
    resize: vertical;
}

.submit-btn {
    background-color: #3498db;
    color: #fff;
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.submit-btn:hover {
    background-color: #2980b9;
}

/* 页脚 */
footer {
    background-color: #222;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-logo svg {
    margin-right: 10px;
}

.footer-info {
    max-width: 400px;
}

.footer-info p {
    color: #aaa;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
}

.link-group h4 {
    color: #fff;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.link-group h4:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: #3498db;
}

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

.link-group ul li a {
    color: #aaa;
    transition: color 0.3s ease;
}

.link-group ul li a:hover {
    color: #3498db;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid #333;
    margin-bottom: 30px;
}

.copyright p {
    color: #aaa;
    font-size: 14px;
}

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: #333;
    border-radius: 50%;
    color: #fff;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: #3498db;
}

.friend-links {
    padding-top: 20px;
}

.friend-links h4 {
    color: #fff;
    margin-bottom: 15px;
}

.friend-links ul {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.friend-links ul li a,
.friend-links a {
    color: #aaa;
    transition: color 0.3s ease;
}

.friend-links ul li a:hover,
.friend-links a:hover {
    color: #3498db;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .app-content {
        flex-direction: column;
    }
    
    .contact-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        height: auto;
        padding: 20px 15px;
    }
    
    nav ul {
        margin-top: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav ul li {
        margin: 5px 10px;
    }
    
    .banner {
        padding: 60px 0;
    }
    
    .banner h1 {
        font-size: 36px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .section-header h2 {
        font-size: 28px;
    }
    
    .banner-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .download-buttons {
        flex-direction: column;
    }
    
    .testimonial-slider {
        flex-direction: column;
    }
}

/* 图标样式 */
[class^="icon-"] {
    display: inline-block;
    width: 1em;
    height: 1em;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.icon-speed {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%233498db' d='M12 2C6.5 2 2 6.5 2 12s4.5 10 10 10 10-4.5 10-10S17.5 2 12 2zm0 18c-4.4 0-8-3.6-8-8s3.6-8 8-8 8 3.6 8 8-3.6 8-8 8zm3.5-9c.8 0 1.5-.7 1.5-1.5S16.3 8 15.5 8 14 8.7 14 9.5s.7 1.5 1.5 1.5zM7 12c0-.8-.7-1.5-1.5-1.5S4 11.2 4 12s.7 1.5 1.5 1.5S7 12.8 7 12zm8 4c0-.8-.7-1.5-1.5-1.5S12 15.2 12 16s.7 1.5 1.5 1.5S15 16.8 15 16zm-8-7c0-.8-.7-1.5-1.5-1.5S4 8.2 4 9s.7 1.5 1.5 1.5S7 9.8 7 9zm7.5 1.5c0-.8-.7-1.5-1.5-1.5S11 9.7 11 10.5s.7 1.5 1.5 1.5 1.5-.7 1.5-1.5zm-2 5c0-.8-.7-1.5-1.5-1.5S9 14.7 9 15.5 9.7 17 10.5 17s1.5-.7 1.5-1.5z'/%3E%3C/svg%3E");
}

.icon-expert {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%233498db' d='M12 2C6.5 2 2 6.5 2 12s4.5 10 10 10 10-4.5 10-10S17.5 2 12 2zm0 18c-4.4 0-8-3.6-8-8s3.6-8 8-8 8 3.6 8 8-3.6 8-8 8zm4-9h-3V8c0-.6-.4-1-1-1s-1 .4-1 1v4c0 .6.4 1 1 1h4c.6 0 1-.4 1-1s-.4-1-1-1z'/%3E%3C/svg%3E");
}

.icon-solution {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%233498db' d='M19 3H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2V5c0-1.1-.9-2-2-2zm0 16H5V5h14v14zM7 10h2v7H7v-7zm4-3h2v10h-2V7zm4 6h2v4h-2v-4z'/%3E%3C/svg%3E");
}

.icon-support {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%233498db' d='M12 2C6.5 2 2 6.5 2 12s4.5 10 10 10 10-4.5 10-10S17.5 2 12 2zm0 18c-4.4 0-8-3.6-8-8s3.6-8 8-8 8 3.6 8 8-3.6 8-8 8zm1-11h-2v2h2V9zm0 4h-2v4h2v-4z'/%3E%3C/svg%3E");
}

.icon-innovation {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%233498db' d='M12 2C6.5 2 2 6.5 2 12s4.5 10 10 10 10-4.5 10-10S17.5 2 12 2zm0 18c-4.4 0-8-3.6-8-8s3.6-8 8-8 8 3.6 8 8-3.6 8-8 8zm-1-8.5V7h2v4.5l3.5 2-1 1.7-4.5-2.7-4.5 2.7-1-1.7 3.5-2z'/%3E%3C/svg%3E");
}

.icon-result {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%233498db' d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41L9 16.17z'/%3E%3C/svg%3E");
}

.icon-location {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%233498db' d='M12 2C8.13 2 5 5.13 5 9c0 5.25 7 13 7 13s7-7.75 7-13c0-3.87-3.13-7-7-7zm0 9.5c-1.38 0-2.5-1.12-2.5-2.5s1.12-2.5 2.5-2.5 2.5 1.12 2.5 2.5-1.12 2.5-2.5 2.5z'/%3E%3C/svg%3E");
}

.icon-phone {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%233498db' d='M6.62 10.79c1.44 2.83 3.76 5.14 6.59 6.59l2.2-2.2c.27-.27.67-.36 1.02-.24 1.12.37 2.33.57 3.57.57.55 0 1 .45 1 1V20c0 .55-.45 1-1 1-9.39 0-17-7.61-17-17 0-.55.45-1 1-1h3.5c.55 0 1 .45 1 1 0 1.25.2 2.45.57 3.57.11.35.03.74-.25 1.02l-2.2 2.2z'/%3E%3C/svg%3E");
}

.icon-email {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%233498db' d='M20 4H4c-1.1 0-1.99.9-1.99 2L2 18c0 1.1.9 2 2 2h16c1.1 0 2-.9 2-2V6c0-1.1-.9-2-2-2zm0 4l-8 5-8-5V6l8 5 8-5v2z'/%3E%3C/svg%3E");
}

.icon-time {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%233498db' d='M11.99 2C6.47 2 2 6.48 2 12s4.47 10 9.99 10C17.52 22 22 17.52 22 12S17.52 2 11.99 2zM12 20c-4.42 0-8-3.58-8-8s3.58-8 8-8 8 3.58 8 8-3.58 8-8 8zm.5-13H11v6l5.25 3.15.75-1.23-4.5-2.67V7z'/%3E%3C/svg%3E");
}

.icon-android {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23333' d='M6 18c0 .55.45 1 1 1h1v3.5c0 .83.67 1.5 1.5 1.5s1.5-.67 1.5-1.5V19h2v3.5c0 .83.67 1.5 1.5 1.5s1.5-.67 1.5-1.5V19h1c.55 0 1-.45 1-1V8H6v10zM3.5 8C2.67 8 2 8.67 2 9.5v7c0 .83.67 1.5 1.5 1.5S5 17.33 5 16.5v-7C5 8.67 4.33 8 3.5 8zm17 0c-.83 0-1.5.67-1.5 1.5v7c0 .83.67 1.5 1.5 1.5s1.5-.67 1.5-1.5v-7c0-.83-.67-1.5-1.5-1.5zm-4.97-5.84l1.3-1.3c.2-.2.2-.51 0-.71-.2-.2-.51-.2-.71 0l-1.48 1.48C13.85 1.23 12.95 1 12 1c-.96 0-1.86.23-2.66.63L7.85.15c-.2-.2-.51-.2-.71 0-.2.2-.2.51 0 .71l1.31 1.31C6.97 3.26 6 5.01 6 7h12c0-1.99-.97-3.75-2.47-4.84zM10 5H9V4h1v1zm5 0h-1V4h1v1z'/%3E%3C/svg%3E");
}

.icon-apple {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23333' d='M17.05 20.28c-.98.95-2.05.8-3.08.35-1.09-.46-2.09-.48-3.24 0-1.44.62-2.2.44-3.06-.35C2.79 15.25 3.51 7.59 9.05 7.31c1.35.07 2.29.74 3.08.8 1.18-.24 2.31-.93 3.57-.84 1.51.12 2.65.72 3.4 1.8-3.12 1.87-2.38 5.98.48 7.13-.68 1.39-1.51 2.76-2.53 4.08zM12.03 7.25c-.15-2.23 1.66-4.07 3.74-4.25.29 2.58-2.34 4.5-3.74 4.25z'/%3E%3C/svg%3E");
}

.icon-wechat {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23fff' d='M9.5 8.5c-.7 0-1.3.6-1.3 1.3s.6 1.3 1.3 1.3 1.3-.6 1.3-1.3-.6-1.3-1.3-1.3zm5 0c-.7 0-1.3.6-1.3 1.3s.6 1.3 1.3 1.3 1.3-.6 1.3-1.3-.6-1.3-1.3-1.3zM12 2C6.5 2 2 6.5 2 12s4.5 10 10 10 10-4.5 10-10S17.5 2 12 2zm-1 16.5c-1.4 0-2.7-.4-3.8-1l-3.6 1.1 1-3.4c-.8-1.2-1.1-2.6-1.1-4.1 0-4.1 3.4-7.5 7.5-7.5s7.5 3.4 7.5 7.5-3.4 7.4-7.5 7.4zm5-10.5c-.9 0-1.6.7-1.6 1.6s.7 1.6 1.6 1.6 1.6-.7 1.6-1.6-.7-1.6-1.6-1.6zm-8 0c-.9 0-1.6.7-1.6 1.6s.7 1.6 1.6 1.6 1.6-.7 1.6-1.6-.7-1.6-1.6-1.6z'/%3E%3C/svg%3E");
}

.icon-weibo {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23fff' d='M9.82 16.47c-3.37.95-6.56-.84-7.13-4.01-.57-3.17 1.69-6.62 5.05-7.57 3.37-.95 6.56.84 7.13 4.01.57 3.17-1.69 6.62-5.05 7.57zm6.82-10.95c-.45-.15-.95.09-1.1.53-.15.44.09.94.54 1.09.45.15.95-.09 1.1-.53.15-.44-.09-.94-.54-1.09zm-2.74-2.11c-1.89-.63-3.95.31-4.58 2.09-.63 1.78.39 3.72 2.28 4.35 1.89.63 3.95-.31 4.58-2.09.63-1.78-.39-3.72-2.28-4.35zM12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm5.35 11.5c-.93 1.64-3.03 2.79-5.58 2.79-3.22 0-5.83-1.88-5.83-4.21 0-1.96 1.76-4.26 4.38-4.26 2.85 0 4.66 1.76 4.66 3.83 0 1.36-.97 2.19-1.73 2.19-.62 0-.91-.43-.88-1.12.04-.88.39-1.72.39-2.3 0-1.22-1.14-1.18-1.59-.4-.3.52-.35 1.09-.35 1.78 0 1.55 1.34 2.64 3.2 2.64 1.85 0 3.19-1.09 3.19-2.64 0-2.24-1.87-3.59-4.64-3.59-2.77 0-5.07 1.93-5.07 4.47 0 2.54 2.3 4.47 5.07 4.47 2.32 0 4.41-1.21 5.24-2.95.2-.41.03-.89-.38-1.09-.41-.2-.89-.03-1.09.38z'/%3E%3C/svg%3E");
}

.icon-zhihu {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23fff' d='M12.2 4h4v2h-4zM5.6 6.5l.5.3c.7.5 1.1 1 1.2 1.3.1.4 0 .7-.1 1.1l-.7 1.6v.1c1.1 1 2 2.1 2.6 3.3.6-.3 1.3-.3 2-.2.3-.7.8-1.5 1.4-2.1-.7-.8-1.3-1.6-1.7-2.2l1.7-3.2h-2.9l-.2.5c-.3-.3-.6-.8-1-1.2-.4-.5-.8-.8-1.1-1.1-.1-.1-.2-.2-.3-.2zm7.2 3.8l-1.5 2.8c.5.7 1.1 1.5 1.9 2.3l-1.8 3.5h2.9l1.2-2.2c1.2 1.4 1.3 2.5 1.3 4.6h2v-5c0-2.5-1.5-4.9-4-6zm-9.4.3v9.2h4.1l.2 2.2h2.5l-.2-2.2h4.1v-9.2h-10.7z'/%3E%3C/svg%3E");
}

.icon-github {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23fff' d='M12 2C6.48 2 2 6.48 2 12c0 4.42 2.87 8.17 6.84 9.5.5.08.66-.23.66-.5v-1.69c-2.77.6-3.36-1.34-3.36-1.34-.46-1.16-1.11-1.47-1.11-1.47-.91-.62.07-.6.07-.6 1 .07 1.53 1.03 1.53 1.03.87 1.52 2.34 1.07 2.91.83.09-.65.35-1.09.63-1.34-2.22-.25-4.55-1.11-4.55-4.92 0-1.11.38-2 1.03-2.71-.1-.25-.45-1.29.1-2.64 0 0 .84-.27 2.75 1.02.79-.22 1.65-.33 2.5-.33.85 0 1.71.11 2.5.33 1.91-1.29 2.75-1.02 2.75-1.02.55 1.35.2 2.39.1 2.64.65.71 1.03 1.6 1.03 2.71 0 3.82-2.34 4.66-4.57 4.91.36.31.69.92.69 1.85V21c0 .27.16.59.67.5C19.14 20.16 22 16.42 22 12A10 10 0 0 0 12 2z'/%3E%3C/svg%3E");
}