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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
header {
    background-color: #000;
    color: #fff;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo h1 {
    font-size: 24px;
    font-weight: bold;
}

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

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

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #00aaff;
}

.btn-group {
    display: flex;
    gap: 10px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s;
}

.btn.register {
    background-color: #00aaff;
    color: #fff;
}

.btn.register:hover {
    background-color: #0088cc;
}

.btn.download {
    background-color: #ff6600;
    color: #fff;
}

.btn.download:hover {
    background-color: #cc5500;
}

.btn.submit {
    background-color: #00aaff;
    color: #fff;
    border: none;
    cursor: pointer;
}

.btn.submit:hover {
    background-color: #0088cc;
}

/*  banner样式 */
.banner {
    background: linear-gradient(135deg, #000, #333);
    color: #fff;
    padding: 100px 0;
    text-align: center;
}

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

.banner p {
    font-size: 18px;
    margin-bottom: 40px;
}

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

/* 面包屑导航 */
.breadcrumb {
    background-color: #fff;
    padding: 15px 0;
    border-bottom: 1px solid #e0e0e0;
}

.breadcrumb a {
    color: #00aaff;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* 内容区域 */
section {
    padding: 60px 0;
}

section h2 {
    font-size: 32px;
    margin-bottom: 40px;
    text-align: center;
    color: #333;
}

section h3 {
    font-size: 24px;
    margin: 40px 0 20px;
    color: #333;
}

section h4 {
    font-size: 18px;
    margin: 20px 0 10px;
    color: #333;
}

/* 平台优势 */
.features {
    background-color: #fff;
}

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

.feature-item {
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* 市场行情 */
.markets {
    background-color: #f5f5f5;
}

.market-table {
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    overflow: hidden;
}

.market-table table {
    width: 100%;
    border-collapse: collapse;
}

.market-table th,
.market-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

.market-table th {
    background-color: #f9f9f9;
    font-weight: bold;
}

.market-table .up {
    color: #00cc00;
}

.market-table .down {
    color: #ff0000;
}

/* 产品服务 */
.products {
    background-color: #fff;
}

.product-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-item {
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.product-item ul {
    margin: 15px 0;
    padding-left: 20px;
}

.product-item li {
    margin-bottom: 10px;
}

/* 交易流程 */
.trade-process {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.process-step {
    text-align: center;
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.step-number {
    display: inline-block;
    width: 50px;
    height: 50px;
    line-height: 50px;
    background-color: #00aaff;
    color: #fff;
    border-radius: 50%;
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
}

/* 平台优势 */
.platform-advantages {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.advantage-item {
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* 支持的币种 */
.supported-coins {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.coin-item {
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* 新闻资讯 */
.news {
    background-color: #fff;
}

.news-filter {
    margin-bottom: 40px;
    text-align: center;
}

.news-filter ul {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 20px;
}

.news-filter ul li a {
    color: #333;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 20px;
    transition: background-color 0.3s;
}

.news-filter ul li a:hover,
.news-filter ul li a.active {
    background-color: #00aaff;
    color: #fff;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.news-item {
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.news-item h3 {
    margin-top: 0;
}

.news-item h3 a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s;
}

.news-item h3 a:hover {
    color: #00aaff;
}

.news-item .date {
    display: block;
    margin-top: 15px;
    color: #666;
    font-size: 14px;
}

.pagination {
    margin-top: 40px;
    text-align: center;
}

.pagination ul {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 10px;
}

.pagination ul li a {
    color: #333;
    text-decoration: none;
    padding: 10px 15px;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.pagination ul li a:hover,
.pagination ul li a.active {
    background-color: #00aaff;
    color: #fff;
}

/* 新闻详情 */
.news-detail {
    background-color: #fff;
}

.news-meta {
    margin-bottom: 30px;
    color: #666;
    font-size: 14px;
}

.news-content {
    margin-bottom: 40px;
}

.news-content p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.news-content h3 {
    margin-top: 40px;
}

.news-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

.news-nav a {
    color: #00aaff;
    text-decoration: none;
}

.news-nav a:hover {
    text-decoration: underline;
}

/* 关于我们 */
.about {
    background-color: #fff;
}

.about-content {
    margin-bottom: 40px;
}

.about-content p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.timeline {
    margin: 40px 0;
}

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

.timeline-date {
    width: 100px;
    font-weight: bold;
    color: #00aaff;
}

.timeline-content {
    flex: 1;
}

.team {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.team-member {
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.partners {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.partner-item {
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.mission,
.vision {
    margin: 40px 0;
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.mission p,
.vision p {
    margin-bottom: 20px;
    line-height: 1.8;
}

/* 联系我们 */
.contact {
    background-color: #fff;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.info-item {
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.feedback-form {
    margin: 40px 0;
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: bold;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #e0e0e0;
    border-radius: 5px;
    font-size: 16px;
}

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

.customer-service {
    margin: 40px 0;
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.customer-service ul {
    margin: 20px 0;
    padding-left: 20px;
}

.customer-service li {
    margin-bottom: 10px;
}

.help-center {
    margin: 40px 0;
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.help-topics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.help-topic {
    padding: 20px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.help-topic ul {
    margin: 20px 0;
    padding-left: 20px;
}

.help-topic li {
    margin-bottom: 10px;
}

.help-topic a {
    color: #00aaff;
    text-decoration: none;
}

.help-topic a:hover {
    text-decoration: underline;
}

.faq {
    margin: 40px 0;
}

.faq-item {
    margin-bottom: 20px;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* 页脚样式 */
footer {
    background-color: #000;
    color: #fff;
    padding: 60px 0;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.link-group h5 {
    font-size: 16px;
    margin-bottom: 20px;
    color: #00aaff;
}

.link-group ul {
    list-style: none;
}

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

.link-group ul li a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s;
}

.link-group ul li a:hover {
    color: #00aaff;
}

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

.footer-btns {
    display: flex;
    gap: 10px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 20px;
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }

    nav ul li {
        margin: 0 15px;
    }

    .banner h2 {
        font-size: 28px;
    }

    .banner-btns {
        flex-direction: column;
        align-items: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .news-nav {
        flex-direction: column;
        gap: 10px;
    }

    .timeline-item {
        flex-direction: column;
        gap: 10px;
    }

    .timeline-date {
        width: auto;
    }
}

@media (max-width: 480px) {
    section {
        padding: 40px 0;
    }

    section h2 {
        font-size: 24px;
    }

    section h3 {
        font-size: 20px;
    }

    .banner {
        padding: 60px 0;
    }

    .banner h2 {
        font-size: 24px;
    }

    .feature-list,
    .product-list,
    .trade-process,
    .platform-advantages,
    .supported-coins,
    .team,
    .partners,
    .contact-info,
    .help-topics,
    .footer-links {
        grid-template-columns: 1fr;
    }
}