:root {
            --primary-color: #f0b90b;
            --secondary-color: #1e2026;
            --dark-bg: #0b0e11;
            --medium-bg: #161a1e;
            --light-bg: #2b2f36;
            --text-primary: #eaecef;
            --text-secondary: #848e9c;
            --danger-color: #f6465d;
            --success-color: #0ecb81;
            --border-radius: 8px;
            --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        
        body {
            background-color: var(--dark-bg);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            padding-bottom: 80px; /* 为悬浮导航栏留出空间 */
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 头部样式 */
        header {
            background-color: var(--medium-bg);
            padding: 20px 0;
            border-bottom: 1px solid var(--light-bg);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            font-weight: bold;
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        
        .logo i {
            margin-right: 10px;
            font-size: 2rem;
        }
        
        .logo-text {
            display: flex;
            flex-direction: column;
        }
        
        .logo-subtitle {
            font-size: 0.8rem;
            color: var(--text-secondary);
            font-weight: normal;
        }
        
        .last-updated {
            background-color: var(--light-bg);
            padding: 8px 15px;
            border-radius: var(--border-radius);
            font-size: 0.9rem;
        }
        
        .last-updated .date {
            color: var(--primary-color);
            font-weight: bold;
        }
        
        /* 主标题区域 */
        .hero {
            padding: 40px 0;
            text-align: center;
            border-bottom: 1px solid var(--light-bg);
        }
        
        .hero h1 {
            font-size: 2.5rem;
            margin-bottom: 15px;
            line-height: 1.2;
        }
        
        .hero .subtitle {
            color: var(--text-secondary);
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 30px;
        }
        
        /* 重要提示区域 */
        .security-alert {
            background-color: rgba(240, 185, 11, 0.1);
            border: 1px solid var(--primary-color);
            border-radius: var(--border-radius);
            padding: 20px;
            margin: 30px 0;
            display: flex;
            align-items: flex-start;
        }
        
        .security-alert i {
            color: var(--primary-color);
            font-size: 1.5rem;
            margin-right: 15px;
            margin-top: 3px;
        }
        
        .security-alert h3 {
            margin-bottom: 10px;
            color: var(--primary-color);
        }
        
        .security-alert ul {
            padding-left: 20px;
            margin-bottom: 10px;
        }
        
        /* 按钮样式 */
        .btn {
            display: inline-block;
            padding: 14px 28px;
            background-color: var(--primary-color);
            color: var(--dark-bg);
            text-decoration: none;
            border-radius: var(--border-radius);
            font-weight: bold;
            font-size: 1.1rem;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
        }
        
        .btn:hover {
            background-color: #e1ab0a;
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(240, 185, 11, 0.3);
        }
        
        .btn-secondary {
            background-color: var(--light-bg);
            color: var(--text-primary);
        }
        
        .btn-secondary:hover {
            background-color: #3a3f47;
        }
        
        .btn-success {
            background-color: var(--success-color);
            color: white;
        }
        
        .btn-success:hover {
            background-color: #0dbd78;
        }
        
        .btn-lg {
            padding: 18px 35px;
            font-size: 1.2rem;
        }
        
        /* 卡片样式 */
        .card {
            background-color: var(--medium-bg);
            border-radius: var(--border-radius);
            padding: 25px;
            box-shadow: var(--box-shadow);
            margin-bottom: 30px;
            border: 1px solid transparent;
            transition: border-color 0.3s;
        }
        
        .card:hover {
            border-color: var(--primary-color);
        }
        
        .card-header {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 1px solid var(--light-bg);
        }
        
        .card-icon {
            background-color: var(--light-bg);
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            font-size: 1.5rem;
            color: var(--primary-color);
        }
        
        .card-title {
            font-size: 1.5rem;
            color: var(--text-primary);
        }
        
        /* 网格布局 */
        .grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 25px;
            margin: 30px 0;
        }
        
        /* 下载平台区域 */
        .platforms {
            margin: 40px 0;
        }
        
        .platform-card {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        
        .platform-icon {
            font-size: 3rem;
            margin-bottom: 15px;
        }
        
        .android .platform-icon {
            color: #3ddc84;
        }
        
        .ios .platform-icon {
            color: #007aff;
        }
        
        .desktop .platform-icon {
            color: var(--primary-color);
        }
        
        /* 信息表格 */
        .info-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
        }
        
        .info-table th, .info-table td {
            padding: 15px;
            text-align: left;
            border-bottom: 1px solid var(--light-bg);
        }
        
        .info-table th {
            color: var(--text-secondary);
            font-weight: 600;
            width: 30%;
        }
        
        /* FAQ样式 */
        .faq-item {
            margin-bottom: 15px;
            border-bottom: 1px solid var(--light-bg);
            padding-bottom: 15px;
        }
        
        .faq-question {
            font-weight: bold;
            font-size: 1.1rem;
            margin-bottom: 10px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .faq-answer {
            color: var(--text-secondary);
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        
        .faq-item.active .faq-answer {
            max-height: 500px;
        }
        
        .faq-toggle {
            color: var(--primary-color);
            font-size: 1.2rem;
            transition: transform 0.3s;
        }
        
        .faq-item.active .faq-toggle {
            transform: rotate(180deg);
        }
        
        /* 截图区域 */
        .screenshots {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 15px;
            margin: 25px 0;
        }
        
        .screenshot {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
            transition: transform 0.3s;
        }
        
        .screenshot:hover {
            transform: translateY(-5px);
        }
        
        .screenshot img {
            width: 100%;
            height: auto;
            display: block;
        }
        
        .screenshot-caption {
            padding: 10px;
            text-align: center;
            background-color: var(--light-bg);
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        
        /* 页脚 */
        footer {
            background-color: var(--medium-bg);
            padding: 40px 0 20px;
            margin-top: 50px;
            border-top: 1px solid var(--light-bg);
        }
        
        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        
        .footer-links h4 {
            margin-bottom: 15px;
            color: var(--text-primary);
        }
        
        .footer-links ul {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: var(--primary-color);
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid var(--light-bg);
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        
        /* 悬浮导航栏样式 */
        .floating-nav {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: rgba(30, 32, 38, 0.95);
            backdrop-filter: blur(10px);
            border-top: 1px solid var(--light-bg);
            padding: 12px 20px;
            z-index: 1000;
            box-shadow: 0 -5px 25px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease;
        }
        
        .floating-nav.hidden {
            transform: translateY(100%);
        }
        
        .floating-nav-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .floating-nav-logo {
            display: flex;
            align-items: center;
        }
        
        .floating-nav-logo i {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin-right: 12px;
        }
        
        .floating-nav-slogan {
            display: flex;
            flex-direction: column;
        }
        
        .floating-nav-slogan .main {
            font-weight: bold;
            font-size: 1.1rem;
        }
        
        .floating-nav-slogan .sub {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 2px;
        }
        
        .floating-nav-buttons {
            display: flex;
            gap: 15px;
        }
        
        .floating-nav-btn {
            padding: 10px 20px;
            border-radius: var(--border-radius);
            font-weight: bold;
            text-decoration: none;
            transition: all 0.3s ease;
            white-space: nowrap;
            font-size: 0.95rem;
        }
        
        .floating-nav-btn.download {
            background-color: var(--primary-color);
            color: var(--dark-bg);
        }
        
        .floating-nav-btn.download:hover {
            background-color: #e1ab0a;
        }
        
        .floating-nav-btn.register {
            background-color: transparent;
            color: var(--primary-color);
            border: 2px solid var(--primary-color);
        }
        
        .floating-nav-btn.register:hover {
            background-color: rgba(240, 185, 11, 0.1);
        }
        
        .floating-nav-close {
            background: none;
            border: none;
            color: var(--text-secondary);
            font-size: 1.2rem;
            cursor: pointer;
            margin-left: 15px;
            transition: color 0.3s;
        }
        
        .floating-nav-close:hover {
            color: var(--text-primary);
        }
        
        /* 响应式调整 */
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 2rem;
            }
            
            .grid {
                grid-template-columns: 1fr;
            }
            
            .floating-nav-slogan .main {
                font-size: 1rem;
            }
            
            .floating-nav-btn {
                padding: 10px 15px;
                font-size: 0.9rem;
            }
        }
        
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .last-updated {
                margin-top: 15px;
            }
            
            .hero h1 {
                font-size: 1.8rem;
            }
            
            .card-header {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .card-icon {
                margin-bottom: 15px;
            }
            
            .floating-nav-content {
                flex-wrap: wrap;
                justify-content: center;
                gap: 15px;
            }
            
            .floating-nav-logo {
                order: 1;
                flex: 1;
            }
            
            .floating-nav-buttons {
                order: 2;
                flex: 2;
                justify-content: center;
            }
            
            .floating-nav-close {
                order: 3;
                position: absolute;
                top: 10px;
                right: 10px;
                margin-left: 0;
            }
        }
        
        @media (max-width: 576px) {
            .container {
                padding: 0 15px;
            }
            
            .btn-lg {
                padding: 15px 25px;
                font-size: 1rem;
                width: 100%;
            }
            
            .screenshots {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .floating-nav-slogan .main {
                font-size: 0.95rem;
            }
            
            .floating-nav-slogan .sub {
                display: none;
            }
            
            .floating-nav-buttons {
                flex-direction: column;
                gap: 10px;
                width: 100%;
            }
            
            .floating-nav-btn {
                width: 100%;
                text-align: center;
            }
            
            body {
                padding-bottom: 130px; /* 增加底部空间以适应更高的悬浮导航栏 */
            }
        }
        
        /* 动画效果 */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .fade-in {
            animation: fadeIn 0.6s ease forwards;
        }
        
        @keyframes slideUp {
            from { transform: translateY(100%); }
            to { transform: translateY(0); }
        }
        
        .floating-nav {
            animation: slideUp 0.5s ease forwards;
        }
        
        /* 验证步骤样式 */
        .verification-steps {
            counter-reset: step;
            margin: 25px 0;
        }
        
        .verification-step {
            display: flex;
            margin-bottom: 20px;
            align-items: flex-start;
        }
        
        .step-number {
            background-color: var(--light-bg);
            color: var(--primary-color);
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            flex-shrink: 0;
            font-weight: bold;
            position: relative;
        }
        
        .step-number:before {
            counter-increment: step;
            content: counter(step);
        }
        
        .step-content {
            flex: 1;
        }
        
        /* 标签样式 */
        .tag {
            display: inline-block;
            padding: 4px 10px;
            background-color: var(--light-bg);
            border-radius: 20px;
            font-size: 0.8rem;
            margin-right: 8px;
            margin-bottom: 8px;
        }
        
        .tag-warning {
            background-color: rgba(240, 185, 11, 0.2);
            color: var(--primary-color);
        }
        
        .tag-success {
            background-color: rgba(14, 203, 129, 0.2);
            color: var(--success-color);
        }
        
        .tag-danger {
            background-color: rgba(246, 70, 93, 0.2);
            color: var(--danger-color);
        }