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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 头部样式 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    height: 80px;
}

.logo h1 {
    margin: 0;
    font-size: 24px;
    font-weight: bold;
    color: #000000;
}

/* 导航菜单 */
.main-nav {
    display: flex;
    align-items: center;
}

.main-nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 20px;
}

.main-nav li {
    margin: 0;
}

.main-nav a {
    color: #333;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 4px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.main-nav a:hover {
    background: #f0f7ff;
    color: #1a73e8;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: #333;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

/* 英雄区域 */
.hero {
    padding: 80px 0;
    background: #000000;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

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

.hero-text h2 {
    font-size: 2.5rem;
    color: #ffffff;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-text p {
    font-size: 1.1rem;
    color: #cccccc;
    margin-bottom: 30px;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.8rem;
    font-weight: bold;
    color: #ffffff;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9rem;
    color: #cccccc;
}

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

.btn {
    padding: 12px 25px;
    border-radius: 5px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: nowrap;
    text-align: center;
}

.btn-primary {
    background-color: #ffffff;
    color: #000000;
}

.btn-primary:hover {
    background-color: #cccccc;
}

.btn-secondary {
    background-color: #333333;
    color: #ffffff;
}

.btn-secondary:hover {
    background-color: #444444;
}

.hero-image {
    flex: 1;
    max-width: 500px;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }

    .hero-text {
        max-width: 100%;
    }

    .hero-stats {
        justify-content: center;
    }

    .download-buttons {
        justify-content: center;
    }

    .hero-image {
        max-width: 100%;
        margin-top: 30px;
    }
}

@media (max-width: 576px) {
    .hero {
        padding: 40px 0;
    }

    .hero-text h2 {
        font-size: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .download-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        margin-bottom: 10px;
    }
}

/* 特性区域 */
.features {
    padding: 80px 0;
    background: #f8f9fa;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2rem;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.feature-item {
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: inline-block;
}

.feature-item h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #333;
}

.feature-item p {
    margin-bottom: 20px;
    color: #666;
}

.feature-list {
    list-style: none;
    text-align: left;
    margin-top: 20px;
    width: 100%;
}

.feature-list li {
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
    font-size: 14px;
    color: #666;
}

.feature-list li:before {
    content: "✓";
    color: #1a73e8;
    position: absolute;
    left: 0;
}

/* App下载区域 */
.app-download {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.app-download-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.download-option {
    background: #fff;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.download-option:hover {
    transform: translateY(-5px);
}

.platform-header {
    margin-bottom: 20px;
    text-align: center;
}

.platform-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 15px;
}

.platform-header h3 {
    font-size: 24px;
    color: #333;
    margin: 0;
}

.platform-info {
    margin-bottom: 30px;
    width: 100%;
}

.platform-info p {
    color: #666;
    margin-bottom: 15px;
}

.version-info {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
    background: #f8f9fa;
    padding: 15px;
    border-radius: 10px;
}

.version-info li {
    color: #666;
    margin-bottom: 8px;
    font-size: 14px;
    padding-left: 20px;
    position: relative;
}

.version-info li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #1a73e8;
}

.download-stats {
    margin: 20px 0;
    text-align: center;
}

.download-count {
    display: block;
    font-size: 24px;
    font-weight: bold;
    color: #1a73e8;
    margin-bottom: 5px;
}

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

.download-benefits {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin: 20px 0;
    width: 100%;
}

.download-benefits h4 {
    color: #333;
    margin-bottom: 15px;
    font-size: 18px;
}

.download-benefits ul {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

.download-benefits li {
    color: #666;
    margin-bottom: 8px;
    font-size: 14px;
    padding-left: 20px;
    position: relative;
}

.download-benefits li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #1a73e8;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 30px;
    background: #1a73e8;
    color: #fff;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    margin-top: auto;
}

.download-btn:hover {
    background: #0d47a1;
    transform: translateY(-2px);
}

.btn-icon {
    margin-right: 8px;
}

/* 交易服务区域 */
.trading {
    padding: 80px 0;
    background: #fff;
}

.trading-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.trading-item {
    background: #f8f9fa;
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.trading-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.trading-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #1a73e8, #0d47a1);
}

.trading-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: inline-block;
    color: #1a73e8;
}

.trading-item h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #333;
}

.trading-item p {
    margin-bottom: 25px;
    color: #666;
    line-height: 1.6;
}

.trading-features {
    list-style: none;
    text-align: left;
    width: 100%;
    margin-top: 20px;
}

.trading-features li {
    margin-bottom: 12px;
    padding-left: 25px;
    position: relative;
    font-size: 14px;
    color: #666;
}

.trading-features li:before {
    content: "✓";
    color: #1a73e8;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.trading-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 25px;
    background: #1a73e8;
    color: #fff;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    margin-top: 20px;
    transition: all 0.3s ease;
}

.trading-btn:hover {
    background: #0d47a1;
    transform: translateY(-2px);
}

/* 响应式设计优化 */
/* 大屏幕 (1200px以上) */
@media (min-width: 1200px) {
    .container {
        max-width: 1200px;
    }
    
    .features-grid,
    .trading-grid,
    .about-features {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* 中等屏幕 (992px-1199px) */
@media (max-width: 1199px) {
    .container {
        max-width: 960px;
    }
    
    .features-grid,
    .trading-grid,
    .about-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-content h2 {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        gap: 30px;
    }
}

/* 平板 (768px-991px) */
@media (max-width: 991px) {
    .container {
        max-width: 720px;
    }
    
    .features-grid,
    .trading-grid,
    .about-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .hero-stats {
        flex-wrap: wrap;
    }
    
    .stat-item {
        width: calc(50% - 15px);
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-brand {
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .register-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 移动设备 (576px-767px) */
@media (max-width: 767px) {
    .container {
        max-width: 100%;
        padding: 0 15px;
    }
    
    .header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        background: #fff;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        z-index: 1002;
    }
    
    .header .container {
        height: 60px;
        padding: 0 15px;
    }
    
    .logo h1 {
        font-size: 18px;
    }
    
    .menu-toggle {
        display: block;
        background: none;
        border: none;
        font-size: 24px;
        color: #333;
        cursor: pointer;
        padding: 10px;
        z-index: 1000;
    }
    
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: #fff;
        padding: 60px 20px 20px;
        box-shadow: -2px 0 10px rgba(0,0,0,0.1);
        transition: right 0.3s ease;
        z-index: 1001;
    }
    
    .main-nav.active {
        right: 0;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 15px;
    }
    
    .main-nav li {
        width: 100%;
    }
    
    .main-nav a {
        display: block;
        padding: 12px 15px;
        font-size: 16px;
        color: #333;
        border-radius: 8px;
        transition: all 0.3s ease;
    }
    
    .main-nav a:hover {
        background: #f8f9fa;
        color: #007bff;
    }
    
    .close-menu {
        position: absolute;
        top: 15px;
        right: 15px;
        background: none;
        border: none;
        font-size: 24px;
        color: #333;
        cursor: pointer;
        padding: 5px;
        z-index: 1002;
    }
    
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.5);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 999;
    }
    
    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    
    body.menu-open {
        overflow: hidden;
    }
    
    /* 英雄区域移动端优化 */
    .hero {
        padding: 80px 0 40px;
        margin-top: 60px;
    }
    
    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }
    
    .hero-text {
        max-width: 100%;
    }
    
    .hero-text h2 {
        font-size: 24px;
        margin-bottom: 15px;
    }
    
    .hero-text p {
        font-size: 16px;
        margin-bottom: 20px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 15px;
        margin-bottom: 20px;
    }
    
    .stat-item {
        background: rgba(255, 255, 255, 0.1);
        padding: 15px;
        border-radius: 8px;
    }
    
    .stat-number {
        font-size: 24px;
    }
    
    .download-buttons {
        flex-direction: column;
        width: 100%;
        gap: 10px;
    }
    
    .btn {
        width: 100%;
        padding: 12px 20px;
        font-size: 16px;
    }
    
    .hero-image {
        max-width: 100%;
        margin-top: 20px;
    }
    
    .hero-image img {
        border-radius: 8px;
    }
    
    /* 特性区域移动端优化 */
    .features {
        padding: 40px 0;
    }
    
    .section-title {
        font-size: 24px;
        margin-bottom: 30px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-item {
        padding: 20px;
    }
    
    /* 交易服务区域移动端优化 */
    .trading {
        padding: 40px 0;
    }
    
    .trading-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .trading-item {
        padding: 20px;
    }
    
    .trading-icon {
        font-size: 36px;
    }
    
    .trading-item h3 {
        font-size: 20px;
    }
    
    .trading-features {
        margin-top: 15px;
    }
    
    .trading-btn {
        width: 100%;
        margin-top: 15px;
    }
    
    /* 安全保障区域移动端优化 */
    .security {
        padding: 40px 0;
    }
    
    .security-framework {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .security-pillar {
        margin-bottom: 20px;
    }
    
    .pillar-header {
        padding: 20px;
    }
    
    .pillar-content {
        padding: 20px;
    }
    
    .security-stats {
        flex-direction: column;
        gap: 15px;
    }
    
    .security-stats .stat-item {
        width: 100%;
        padding: 20px;
    }
    
    /* 注册指南区域移动端优化 */
    .register-guide {
        padding: 40px 0;
    }
    
    .register-steps {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .step-item {
        padding: 20px;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .benefit-item {
        padding: 20px;
    }
    
    /* 关于我们区域移动端优化 */
    .about {
        padding: 40px 0;
    }
    
    .about-features {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-card {
        padding: 20px;
    }
    
    .about-stats {
        flex-direction: column;
        gap: 15px;
    }
    
    .about-stats .stat-item {
        width: 100%;
        padding: 20px;
    }
    
    /* 页脚移动端优化 */
    .footer {
        padding: 40px 0 0;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-brand {
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .link-group {
        text-align: center;
    }
    
    .link-group h4:after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-legal {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .legal-links {
        justify-content: center;
        flex-wrap: wrap;
    }

    /* App下载区域移动端优化 */
    .app-download {
        padding: 40px 0;
    }

    .app-download-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 15px;
    }

    .download-option {
        padding: 25px 20px;
    }

    .platform-header {
        margin-bottom: 15px;
    }

    .platform-icon {
        font-size: 36px;
        margin-bottom: 10px;
    }

    .platform-header h3 {
        font-size: 20px;
    }

    .platform-info {
        margin-bottom: 20px;
    }

    .platform-info p {
        font-size: 14px;
        margin-bottom: 10px;
    }

    .version-info {
        padding: 12px;
    }

    .version-info li {
        font-size: 13px;
        margin-bottom: 6px;
    }

    .download-stats {
        margin: 15px 0;
    }

    .download-count {
        font-size: 20px;
    }

    .download-label {
        font-size: 13px;
    }

    .download-benefits {
        padding: 15px;
        margin: 15px 0;
    }

    .download-benefits h4 {
        font-size: 16px;
        margin-bottom: 10px;
    }

    .download-benefits li {
        font-size: 13px;
        margin-bottom: 6px;
    }

    .download-btn {
        width: 100%;
        padding: 12px 20px;
        font-size: 15px;
        margin-top: 15px;
    }

    .btn-icon {
        margin-right: 6px;
    }
}

@media (max-width: 375px) {
    .hero-text h2 {
        font-size: 22px;
    }
    
    .hero-text p {
        font-size: 14px;
    }
    
    .stat-number {
        font-size: 20px;
    }
    
    .stat-label {
        font-size: 12px;
    }
    
    .btn {
        font-size: 14px;
        padding: 10px 15px;
    }
    
    .section-title {
        font-size: 20px;
    }
    
    .feature-item h3,
    .trading-item h3 {
        font-size: 18px;
    }
    
    .feature-list li,
    .trading-features li {
        font-size: 13px;
    }

    /* App下载区域小屏幕优化 */
    .download-option {
        padding: 20px 15px;
    }

    .platform-header h3 {
        font-size: 18px;
    }

    .platform-info p {
        font-size: 13px;
    }

    .version-info li {
        font-size: 12px;
    }

    .download-count {
        font-size: 18px;
    }

    .download-label {
        font-size: 12px;
    }

    .download-benefits h4 {
        font-size: 15px;
    }

    .download-benefits li {
        font-size: 12px;
    }

    .download-btn {
        font-size: 14px;
        padding: 10px 15px;
    }
}

/* 横屏模式优化 */
@media (max-height: 600px) and (orientation: landscape) {
    .hero {
        padding: 60px 0;
    }
    
    .hero-content {
        padding: 20px 0;
    }
    
    .hero-stats {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .stat-item {
        width: calc(50% - 15px);
    }
}

/* 减少动画效果 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* 触摸设备优化 */
@media (hover: none) {
    .btn:hover,
    .feature-item:hover,
    .trading-item:hover,
    .security-pillar:hover,
    .step-item:hover,
    .benefit-item:hover,
    .feature-card:hover {
        transform: none;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 安全保障区域 */
.security {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.security-content {
    max-width: 1200px;
    margin: 0 auto;
}

.security-intro {
    text-align: center;
    margin-bottom: 60px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.security-intro p {
    font-size: 18px;
    line-height: 1.6;
    color: #666;
}

.security-framework {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.security-pillar {
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: transform 0.3s ease;
}

.security-pillar:hover {
    transform: translateY(-5px);
}

.pillar-header {
    background: #1a73e8;
    color: #fff;
    padding: 25px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.pillar-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: rgba(255,255,255,0.2);
}

.pillar-icon {
    font-size: 40px;
    margin-bottom: 15px;
    display: block;
}

.pillar-header h3 {
    margin: 0;
    font-size: 24px;
    font-weight: 600;
}

.pillar-content {
    padding: 30px;
}

.security-feature {
    margin-bottom: 30px;
}

.security-feature:last-child {
    margin-bottom: 0;
}

.security-feature h4 {
    color: #1a73e8;
    font-size: 18px;
    margin-bottom: 15px;
    font-weight: 600;
}

.feature-details p {
    color: #666;
    margin-bottom: 15px;
    font-size: 14px;
    line-height: 1.6;
}

.feature-details ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-details li {
    color: #666;
    font-size: 14px;
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.feature-details li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #1a73e8;
}

.security-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
}

.security-stats .stat-item {
    text-align: center;
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    min-width: 200px;
    transition: transform 0.3s ease;
}

.security-stats .stat-item:hover {
    transform: translateY(-5px);
}

.security-stats .stat-number {
    display: block;
    font-size: 36px;
    font-weight: bold;
    color: #1a73e8;
    margin-bottom: 10px;
}

.security-stats .stat-label {
    color: #666;
    font-size: 16px;
}

@media (max-width: 992px) {
    .security-framework {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .security-stats {
        flex-wrap: wrap;
    }
    
    .security-stats .stat-item {
        min-width: 180px;
    }
}

@media (max-width: 768px) {
    .security-framework {
        grid-template-columns: 1fr;
    }
    
    .security-stats {
        flex-direction: column;
        align-items: center;
    }
    
    .security-stats .stat-item {
        width: 100%;
        max-width: 300px;
    }
    
    .pillar-header {
        padding: 20px;
    }
    
    .pillar-header h3 {
        font-size: 20px;
    }
    
    .pillar-content {
        padding: 20px;
    }
    
    .security-feature {
        margin-bottom: 20px;
    }
}

/* 注册指南区域 */
.register-guide {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.register-content {
    max-width: 1200px;
    margin: 0 auto;
}

.register-intro {
    text-align: center;
    margin-bottom: 60px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.register-intro p {
    font-size: 18px;
    line-height: 1.6;
    color: #666;
}

.register-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.step-item {
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    padding: 30px;
    position: relative;
    transition: transform 0.3s ease;
}

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

.step-number {
    width: 40px;
    height: 40px;
    background: #1a73e8;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 20px;
}

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

.step-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.step-content li {
    color: #666;
    font-size: 14px;
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.step-content li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #1a73e8;
}

.register-benefits {
    background: #fff;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.register-benefits h3 {
    text-align: center;
    color: #333;
    font-size: 24px;
    margin-bottom: 40px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.benefit-item {
    text-align: center;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

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

.benefit-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.benefit-item h4 {
    color: #333;
    font-size: 18px;
    margin-bottom: 10px;
}

.benefit-item p {
    color: #666;
    font-size: 14px;
}

/* 关于我们区域 */
.about {
    padding: 80px 0;
    background: #fff;
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
}

.about-intro {
    text-align: center;
    margin-bottom: 60px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.about-intro p {
    font-size: 18px;
    line-height: 1.6;
    color: #666;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.feature-card {
    background: #f8f9fa;
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card .feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

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

.feature-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

.feature-card li {
    color: #666;
    font-size: 14px;
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.feature-card li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #1a73e8;
}

.about-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
}

.about-stats .stat-item {
    text-align: center;
    background: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    min-width: 200px;
    transition: transform 0.3s ease;
}

.about-stats .stat-item:hover {
    transform: translateY(-5px);
}

.about-stats .stat-number {
    display: block;
    font-size: 36px;
    font-weight: bold;
    color: #1a73e8;
    margin-bottom: 10px;
}

.about-stats .stat-label {
    color: #666;
    font-size: 16px;
}

@media (max-width: 992px) {
    .register-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-features {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .register-steps {
        grid-template-columns: 1fr;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        flex-direction: column;
        align-items: center;
    }
    
    .about-stats .stat-item {
        width: 100%;
        max-width: 300px;
    }
    
    .step-item,
    .benefit-item,
    .feature-card {
        padding: 20px;
    }
}

/* 页脚样式 */
.footer {
    background: #1a1a1a;
    color: #fff;
    padding: 60px 0 0;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 300px;
}

.footer-brand h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #fff;
}

.footer-brand p {
    color: #999;
    margin-bottom: 20px;
    line-height: 1.6;
}

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

.social-link {
    color: #fff;
    text-decoration: none;
    padding: 8px 15px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    transition: background 0.3s ease;
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.2);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.link-group h4 {
    color: #fff;
    font-size: 18px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.link-group h4:after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background: #1a73e8;
}

.link-group ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.link-group li {
    margin-bottom: 12px;
}

.link-group a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s ease;
}

.link-group a:hover {
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    padding-bottom: 30px;
}

.footer-legal {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.legal-links {
    display: flex;
    gap: 20px;
}

.legal-links a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s ease;
}

.legal-links a:hover {
    color: #fff;
}

.footer-disclaimer {
    text-align: center;
    color: #999;
    font-size: 14px;
    line-height: 1.6;
}

@media (max-width: 992px) {
    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-brand {
        max-width: 100%;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .footer {
        padding: 40px 0 0;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-legal {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .legal-links {
        justify-content: center;
    }
    
    .link-group {
        text-align: center;
    }
    
    .link-group h4:after {
        left: 50%;
        transform: translateX(-50%);
    }
}