:root {
            --primary: #6c5ce7;
            --primary-light: #a29bfe;
            --secondary: #00cec9;
            --dark: #2d3436;
            --light: #f5f6fa;
            --text: #2d3436;
            --text-light: #636e72;
            --white: #ffffff;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Poppins', 'Helvetica Neue', Arial, sans-serif;
        }
        body {
            background-color: var(--light);
            color: var(--text);
            line-height: 1.7;
            overflow-x: hidden;
        }
        .container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 20px;
        }
        /* 顶部导航 */
        .top-nav {
            background-color: var(--white);
            box-shadow: 0 2px 15px rgba(0,0,0,0.05);
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .brand {
            display: flex;
            align-items: center;
        }
        .brand-logo {
            height: 42px;
            margin-right: 12px;
        }
        .brand-name {
            font-size: 24px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .main-nav {
            display: flex;
            align-items: center;
        }
        .nav-items {
            display: flex;
            list-style: none;
        }
        .nav-items li {
            margin: 0 15px;
            position: relative;
        }
        .nav-items a {
            color: var(--text);
            text-decoration: none;
            font-weight: 500;
            font-size: 15px;
            transition: all 0.3s;
            padding: 8px 0;
        }
        .nav-items a:hover {
            color: var(--primary);
        }
        .nav-items a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-items a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 3px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            margin-left: 30px;
        }
        /* 汉堡菜单 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: space-between;
            width: 30px;
            height: 21px;
            cursor: pointer;
            z-index: 101;
        }
        .menu-toggle span {
            display: block;
            height: 3px;
            width: 100%;
            background-color: var(--primary);
            border-radius: 3px;
            transition: all 0.3s;
        }
        /* 按钮样式 */
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 15px;
            transition: all 0.3s;
            text-align: center;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--white);
            box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(108, 92, 231, 0.4);
        }
        .btn-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
            margin-left: 15px;
        }
        .btn-outline:hover {
            background-color: rgba(108, 92, 231, 0.05);
        }
        /* 英雄区域 */
        .hero-section {
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
        }
        .hero-content {
            display: flex;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-text {
            flex: 1;
            padding-right: 50px;
        }
        .hero-image {
            flex: 1;
            position: relative;
        }
        .hero-image img {
            width: 100%;
            max-width: 600px;
            border-radius: 15px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        }
        .hero-bg {
            position: absolute;
            top: -100px;
            right: -300px;
            width: 800px;
            height: 800px;
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.1), rgba(0, 206, 201, 0.1));
            border-radius: 50%;
            z-index: 1;
        }
        .hero-title {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 25px;
            color: var(--dark);
        }
        .hero-subtitle {
            font-size: 18px;
            color: var(--text-light);
            margin-bottom: 35px;
            max-width: 500px;
        }
        .hero-actions {
            display: flex;
            align-items: center;
        }
        .hero-stats {
            display: flex;
            margin-top: 50px;
        }
        .stat-item {
            margin-right: 40px;
        }
        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 5px;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-light);
        }
        /* 平台特色 */
        .features-section {
            padding: 60px 0;
            background-color: var(--white);
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 15px;
        }
        .section-subtitle {
            font-size: 17px;
            color: var(--text-light);
            max-width: 700px;
            margin: 0 auto;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        .feature-card {
            background: var(--light);
            border-radius: 12px;
            padding: 40px 30px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
            z-index: 1;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.05), rgba(0, 206, 201, 0.05));
            z-index: -1;
            opacity: 0;
            transition: opacity 0.3s;
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.08);
        }
        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: var(--white);
            font-size: 24px;
        }
        .feature-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 15px;
            color: var(--dark);
        }
        /* 交易产品 */
        .products-section {
            padding: 60px 0;
            background-color: var(--light);
        }
        .products-tabs {
            display: flex;
            justify-content: center;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .tab-btn {
            padding: 12px 25px;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            cursor: pointer;
            position: relative;
            transition: all 0.3s;
        }
        .tab-btn.active {
            color: var(--primary);
        }
        .tab-btn.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 25%;
            width: 50%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 3px;
        }
        .products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
        }
        .product-card {
            background: var(--white);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.03);
            transition: all 0.3s;
        }
        .product-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.08);
        }
        .product-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.1), rgba(0, 206, 201, 0.1));
            color: var(--primary);
            font-size: 20px;
        }
        .product-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 15px;
        }
        .product-desc {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        /* 安全保障 */
        .security-section {
            padding: 60px 0;
            background-color: var(--white);
        }
        .security-content {
            display: flex;
            align-items: center;
            margin-top: 50px;
        }
        .security-text {
            flex: 1;
            padding-right: 50px;
        }
        .security-image {
            flex: 1;
        }
        .security-image img {
            width: 100%;
            max-width: 500px;
            border-radius: 12px;
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .security-list {
            list-style: none;
        }
        .security-item {
            margin-bottom: 25px;
            display: flex;
            align-items: flex-start;
        }
        .security-item-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.1), rgba(0, 206, 201, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
        }
        .security-item-content h4 {
            font-size: 18px;
            margin-bottom: 8px;
        }
        .security-item-content p {
            font-size: 14px;
            color: var(--text-light);
        }
        /* 底部 */
        .footer-section {
            background-color: var(--dark);
            color: var(--white);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 50px;
        }
        .footer-brand {
            margin-bottom: 25px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
        }
        .footer-logo img {
            height: 32px;
            margin-right: 10px;
        }
        .footer-logo-text {
            font-size: 20px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .footer-about {
            color: rgba(255,255,255,0.7);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .footer-social {
            display: flex;
        }
        .social-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 10px;
            color: var(--white);
            transition: all 0.3s;
        }
        .social-icon:hover {
            background: var(--primary);
            transform: translateY(-3px);
        }
        .footer-column h3 {
            font-size: 18px;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-column h3::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 40px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: var(--white);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: rgba(255,255,255,0.5);
            font-size: 14px;
        }
        /* 响应式设计 */
        @media (max-width: 1024px) {
            .hero-content {
                flex-direction: column;
            }
            .hero-text {
                padding-right: 0;
                margin-bottom: 50px;
                text-align: center;
            }
            .hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-stats {
                justify-content: center;
            }
            .security-content {
                flex-direction: column;
            }
            .security-text {
                padding-right: 0;
                margin-bottom: 50px;
            }
            .security-image {
                text-align: center;
            }
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 36px;
            }
            .section-title {
                font-size: 30px;
            }
            .feature-card {
                padding: 30px 20px;
            }
            .feature-icon {
                width: 50px;
                height: 50px;
                font-size: 20px;
                margin-bottom: 20px;
            }
            .feature-title {
                font-size: 18px;
            }
            .product-card {
                padding: 25px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 576px) {
            .menu-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: 80%;
                max-width: 300px;
                height: 100vh;
                background: var(--white);
                flex-direction: column;
                align-items: flex-start;
                padding: 80px 30px 30px;
                transition: right 0.3s;
                box-shadow: -5px 0 15px rgba(0,0,0,0.1);
            }
            .main-nav.active {
                right: 0;
            }
            .nav-items {
                flex-direction: column;
                width: 100%;
                margin-bottom: 30px;
            }
            .nav-items li {
                margin: 0 0 20px 0;
            }
            .nav-actions {
                flex-direction: column;
                margin-left: 0;
                width: 100%;
            }
            .btn-outline {
                margin-left: 0;
                margin-top: 15px;
            }
            .hero-title {
                font-size: 32px;
                margin-bottom: 20px;
            }
            .hero-subtitle {
                font-size: 16px;
                margin-bottom: 30px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .btn {
                width: 100%;
                margin-bottom: 15px;
            }
            .btn-outline {
                margin-left: 0;
            }
            .hero-stats {
                flex-direction: column;
                align-items: center;
                margin-top: 30px;
            }
            .stat-item {
                margin-right: 0;
                margin-bottom: 20px;
                text-align: center;
            }
            .stat-number {
                font-size: 28px;
            }
            .section-title {
                font-size: 28px;
            }
            .section-subtitle {
                font-size: 15px;
            }
            .products-tabs {
                justify-content: flex-start;
                overflow-x: auto;
                padding-bottom: 10px;
                -webkit-overflow-scrolling: touch;
            }
            .tab-btn {
                padding: 10px 20px;
                font-size: 14px;
                white-space: nowrap;
            }
            .products-grid {
                grid-template-columns: 1fr;
            }
            .security-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .security-item-icon {
                margin-bottom: 10px;
            }
            .footer-about {
                font-size: 13px;
            }
            .footer-links a {
                font-size: 13px;
            }
            .footer-bottom {
                font-size: 12px;
            }
        }
        @media (max-width: 400px) {
            .hero-title {
                font-size: 28px;
            }
            .brand-name {
                font-size: 20px;
            }
            .brand-logo {
                height: 36px;
            }
            .section-title {
                font-size: 26px;
            }
            .feature-card {
                padding: 25px 15px;
            }
        }