/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* 头部导航 */
.header {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo h1 {
    color: #fff;
    font-size: 1.8rem;
    font-weight: bold;
    margin-bottom: 0.2rem;
}

.logo span {
    color: #ffd700;
    font-size: 0.9rem;
    font-weight: 500;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #ffd700;
}

.nav-buttons {
    display: flex;
    gap: 1rem;
}

.btn-register, .btn-download {
    padding: 0.6rem 1.2rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-register {
    background: #ff6b35;
    color: #fff;
}

.btn-register:hover {
    background: #e55a2b;
    transform: translateY(-2px);
}

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

.btn-download:hover {
    background: #fff;
    color: #1e3c72;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: #fff;
    margin: 3px 0;
    transition: 0.3s;
}

/* Banner区域 */
.banner {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 120px 0 80px;
    color: #fff;
    margin-top: 80px;
}

.banner-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.banner-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.banner-text p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.banner-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    padding: 1rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: #ff6b35;
    color: #fff;
    border: 2px solid #ff6b35;
}

.btn-primary:hover {
    background: #e55a2b;
    border-color: #e55a2b;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(255, 107, 53, 0.3);
}

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

.btn-secondary:hover {
    background: #fff;
    color: #667eea;
    transform: translateY(-3px);
}

.trading-chart {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.trading-chart h3 {
    margin-bottom: 1rem;
    color: #ffd700;
}

.chart-placeholder p {
    margin: 0.5rem 0;
    font-size: 1.1rem;
}

/* 产品特色 */
.features {
    padding: 80px 0;
    background: #fff;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #1e3c72;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: #fff;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #1e3c72;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* 交易服务 */
.trading {
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.trading h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #1e3c72;
}

.trading-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.trading-info h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #1e3c72;
}

.trading-info ul {
    list-style: none;
    margin-bottom: 2rem;
}

.trading-info li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.trading-info li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #ff6b35;
    font-weight: bold;
}

.trading-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-outline {
    padding: 0.8rem 1.5rem;
    border: 2px solid #1e3c72;
    color: #1e3c72;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background: #1e3c72;
    color: #fff;
}

.trading-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.stat-item {
    background: #fff;
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
}

.stat-item h4 {
    color: #666;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.stat-item p {
    font-size: 2rem;
    font-weight: bold;
    color: #1e3c72;
}

/* 安全保障 */
.security {
    padding: 80px 0;
    background: #fff;
}

.security h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #1e3c72;
}

.security-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.security-item {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    border-left: 4px solid #ff6b35;
}

.security-item h3 {
    color: #1e3c72;
    margin-bottom: 1rem;
}

.security-item p {
    color: #666;
    line-height: 1.6;
}

/* 下载区域 */
.download {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: #fff;
}

.download h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.download-info h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #ffd700;
}

.download-info p {
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.6;
}

.download-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.feature span {
    font-size: 1.2rem;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.download-btn {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: #fff;
    padding: 1rem 1.5rem;
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.3s ease;
    text-align: center;
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: #ffd700;
    transform: translateY(-2px);
}

.download-btn span {
    display: block;
    font-weight: 600;
    font-size: 1.1rem;
}

.download-btn small {
    opacity: 0.8;
    font-size: 0.9rem;
}

/* 底部 */
.footer {
    background: #1a1a1a;
    color: #fff;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3, .footer-section h4 {
    margin-bottom: 1rem;
    color: #ffd700;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #ffd700;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    background: #333;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

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

.footer-links {
    display: flex;
    gap: 1rem;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    font-size: 0.9rem;
}

/* 手机版底部菜单 */
.mobile-bottom-menu {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #fff;
    border-top: 1px solid #eee;
    padding: 0.5rem 0;
    z-index: 1000;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

.mobile-bottom-menu {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.menu-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: #666;
    padding: 0.5rem;
    transition: color 0.3s ease;
    flex: 1;
}

.menu-item:hover, .menu-item.active {
    color: #1e3c72;
}

.menu-icon {
    font-size: 1.2rem;
    margin-bottom: 0.2rem;
}

.menu-text {
    font-size: 0.8rem;
}

.register-btn {
    background: #ff6b35;
    color: #fff !important;
    border-radius: 20px;
    margin: 0 0.5rem;
}

.download-btn {
    background: #1e3c72;
    color: #fff !important;
    border-radius: 20px;
    margin: 0 0.5rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-buttons {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .banner-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .banner-text h2 {
        font-size: 2rem;
    }
    
    .banner-buttons {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .trading-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .trading-stats {
        grid-template-columns: 1fr 1fr;
    }
    
    .download-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .download-features {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .mobile-bottom-menu {
        display: flex;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .nav-container {
        padding: 1rem;
    }
    
    .banner {
        padding: 100px 0 60px;
    }
    
    .features, .trading, .security, .download {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .banner-text h2 {
        font-size: 1.5rem;
    }
    
    .btn-primary, .btn-secondary {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }
    
    .features h2, .trading h2, .security h2, .download h2 {
        font-size: 2rem;
    }
    
    .trading-stats {
        grid-template-columns: 1fr;
    }
    
    .banner-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .trading-buttons {
        flex-direction: column;
        align-items: center;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card, .security-item, .stat-item {
    animation: fadeInUp 0.6s ease-out;
}

/* 页面标题样式 */
.page-header {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: #fff;
    padding: 120px 0 60px;
    text-align: center;
    margin-top: 80px;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 公司介绍样式 */
.company-intro {
    padding: 80px 0;
    background: #fff;
}

.intro-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: center;
}

.intro-text h2 {
    font-size: 2rem;
    color: #1e3c72;
    margin-bottom: 1.5rem;
}

.intro-text p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.intro-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-top: 2rem;
}

.intro-stats .stat-item {
    text-align: center;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 10px;
}

.intro-stats .stat-item h3 {
    font-size: 1.5rem;
    color: #1e3c72;
    margin-bottom: 0.5rem;
}

.intro-stats .stat-item p {
    color: #666;
    font-size: 0.9rem;
}

.intro-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-placeholder {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 3rem 2rem;
    border-radius: 15px;
    text-align: center;
    width: 100%;
}

.image-placeholder h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

/* 发展历程样式 */
.timeline {
    padding: 80px 0;
    background: #f8f9fa;
}

.timeline h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #1e3c72;
    margin-bottom: 3rem;
}

.timeline-content {
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
}

.timeline-year {
    background: #ff6b35;
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: bold;
    margin-right: 2rem;
    min-width: 80px;
    text-align: center;
}

.timeline-content h3 {
    color: #1e3c72;
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: #666;
    line-height: 1.6;
}

/* 核心优势样式 */
.advantages {
    padding: 80px 0;
    background: #fff;
}

.advantages h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #1e3c72;
    margin-bottom: 3rem;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.advantage-card {
    background: #fff;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease;
    border: 1px solid #eee;
}

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

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.advantage-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #1e3c72;
}

.advantage-card p {
    color: #666;
    line-height: 1.6;
}

/* 服务特色样式 */
.services {
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.services h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #1e3c72;
    margin-bottom: 3rem;
}

.services-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-item {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
    border-left: 4px solid #ff6b35;
}

.service-item h3 {
    color: #1e3c72;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.service-item p {
    color: #666;
    line-height: 1.6;
}

/* 下载引导样式 */
.download-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: #fff;
    text-align: center;
}

.download-cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.download-cta p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* 导航激活状态 */
.nav-menu .active {
    color: #ffd700 !important;
}

/* 响应式设计 - 关于页面 */
@media (max-width: 768px) {
    .intro-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .intro-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .timeline-item {
        flex-direction: column;
        text-align: center;
    }
    
    .timeline-year {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .services-content {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .intro-text h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .intro-stats {
        grid-template-columns: 1fr;
    }
    
    .page-header h1 {
        font-size: 1.5rem;
    }
    
    .advantages h2, .services h2, .timeline h2, .download-cta h2 {
        font-size: 2rem;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #1e3c72;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #2a5298;
}