* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html, body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            color: #333;
            background-color: #f8f9fa;
        }

        /* 导航栏样式 */
        .oa02v9-navbar {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 0 20px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .oa02v9-navbar-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .oa02v9-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: white;
            font-size: 18px;
            font-weight: bold;
        }

        .oa02v9-logo img {
            height: 40px;
            width: auto;
        }

        .oa02v9-nav-menu {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        .oa02v9-nav-link {
            color: white;
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: opacity 0.3s ease;
            padding: 8px 12px;
            border-radius: 4px;
        }

        .oa02v9-nav-link:hover {
            background-color: rgba(255, 255, 255, 0.2);
            opacity: 0.9;
        }

        /* 页面容器 */
        .oa02v9-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部横幅 */
        .oa02v9-hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 60px 20px;
            text-align: center;
        }

        .oa02v9-hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .oa02v9-hero-title {
            font-size: 42px;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .oa02v9-hero-desc {
            font-size: 18px;
            margin-bottom: 30px;
            opacity: 0.95;
            line-height: 1.6;
        }

        .oa02v9-cta-button {
            display: inline-block;
            background-color: #ff6b6b;
            color: white;
            padding: 14px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-size: 16px;
            font-weight: 600;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
        }

        .oa02v9-cta-button:hover {
            background-color: #ff5252;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 107, 107, 0.6);
        }

        /* 主内容区 */
        .oa02v9-main-content {
            background: white;
            padding: 60px 20px;
            margin-top: -20px;
            position: relative;
            z-index: 10;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }

        .oa02v9-content-inner {
            max-width: 900px;
            margin: 0 auto;
        }

        .oa02v9-h1-title {
            font-size: 36px;
            font-weight: 700;
            color: #222;
            margin-bottom: 30px;
            line-height: 1.3;
            padding-bottom: 15px;
            border-bottom: 3px solid #667eea;
        }

        .oa02v9-intro-paragraph {
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 30px;
            color: #555;
        }

        /* 步骤部分 */
        .oa02v9-steps-section {
            margin-top: 40px;
        }

        .oa02v9-section-title {
            font-size: 28px;
            font-weight: 700;
            color: #222;
            margin-bottom: 25px;
            margin-top: 40px;
            padding-left: 15px;
            border-left: 4px solid #667eea;
        }

        .oa02v9-step-item {
            background: #f8f9fa;
            padding: 25px;
            margin-bottom: 20px;
            border-radius: 8px;
            border-left: 4px solid #667eea;
            transition: all 0.3s ease;
        }

        .oa02v9-step-item:hover {
            box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
            transform: translateX(5px);
        }

        .oa02v9-step-number {
            display: inline-block;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border-radius: 50%;
            text-align: center;
            line-height: 40px;
            font-weight: bold;
            font-size: 18px;
            margin-right: 15px;
            margin-bottom: 10px;
        }

        .oa02v9-step-title {
            font-size: 18px;
            font-weight: 600;
            color: #222;
            margin-bottom: 10px;
            display: inline-block;
        }

        .oa02v9-step-desc {
            font-size: 15px;
            color: #666;
            line-height: 1.6;
            margin-left: 55px;
        }

        /* 特性列表 */
        .oa02v9-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
            margin-top: 30px;
            margin-bottom: 40px;
        }

        .oa02v9-feature-card {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            padding: 25px;
            border-radius: 8px;
            border: 1px solid #e0e0e0;
            transition: all 0.3s ease;
        }

        .oa02v9-feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(102, 126, 234, 0.2);
        }

        .oa02v9-feature-icon {
            font-size: 32px;
            margin-bottom: 15px;
        }

        .oa02v9-feature-title {
            font-size: 16px;
            font-weight: 600;
            color: #222;
            margin-bottom: 10px;
        }

        .oa02v9-feature-desc {
            font-size: 14px;
            color: #666;
            line-height: 1.6;
        }

        /* 提示框 */
        .oa02v9-tips-box {
            background: #fff3cd;
            border-left: 4px solid #ffc107;
            padding: 20px;
            margin: 30px 0;
            border-radius: 4px;
        }

        .oa02v9-tips-title {
            font-weight: 600;
            color: #856404;
            margin-bottom: 10px;
            font-size: 16px;
        }

        .oa02v9-tips-text {
            color: #856404;
            font-size: 14px;
            line-height: 1.6;
        }

        /* FAQ部分 */
        .oa02v9-faq-container {
            margin-top: 40px;
        }

        .oa02v9-faq-item {
            background: #f8f9fa;
            margin-bottom: 15px;
            border-radius: 6px;
            overflow: hidden;
        }

        .oa02v9-faq-question {
            padding: 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #f8f9fa;
            transition: background 0.3s ease;
            font-weight: 600;
            color: #222;
            font-size: 15px;
        }

        .oa02v9-faq-question:hover {
            background: #e9ecef;
        }

        .oa02v9-faq-toggle {
            font-size: 20px;
            color: #667eea;
            transition: transform 0.3s ease;
        }

        .oa02v9-faq-item.active .oa02v9-faq-toggle {
            transform: rotate(180deg);
        }

        .oa02v9-faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .oa02v9-faq-item.active .oa02v9-faq-answer {
            padding: 20px;
            max-height: 500px;
        }

        .oa02v9-faq-answer-text {
            color: #666;
            font-size: 14px;
            line-height: 1.6;
            font-weight: normal;
        }

        /* CTA部分 */
        .oa02v9-cta-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 50px 20px;
            text-align: center;
            border-radius: 10px;
            margin: 50px 0;
        }

        .oa02v9-cta-section-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .oa02v9-cta-section-desc {
            font-size: 16px;
            margin-bottom: 30px;
            opacity: 0.95;
        }

        /* 页脚 */
        .oa02v9-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 40px 20px;
            margin-top: 60px;
        }

        .oa02v9-footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 30px;
        }

        .oa02v9-footer-section-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 15px;
        }

        .oa02v9-footer-link {
            display: block;
            color: #bdc3c7;
            text-decoration: none;
            margin-bottom: 10px;
            font-size: 14px;
            transition: color 0.3s ease;
        }

        .oa02v9-footer-link:hover {
            color: #ecf0f1;
        }

        .oa02v9-footer-bottom {
            border-top: 1px solid #34495e;
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #95a5a6;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .oa02v9-hero-title {
                font-size: 28px;
            }

            .oa02v9-h1-title {
                font-size: 24px;
            }

            .oa02v9-section-title {
                font-size: 22px;
            }

            .oa02v9-nav-menu {
                gap: 15px;
            }

            .oa02v9-nav-link {
                font-size: 12px;
            }

            .oa02v9-navbar-container {
                height: auto;
                padding: 15px 0;
            }

            .oa02v9-main-content {
                padding: 30px 15px;
            }

            .oa02v9-hero {
                padding: 40px 15px;
            }

            .oa02v9-cta-section {
                padding: 30px 15px;
            }

            .oa02v9-cta-section-title {
                font-size: 24px;
            }

            .oa02v9-features-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 480px) {
            .oa02v9-hero-title {
                font-size: 22px;
            }

            .oa02v9-h1-title {
                font-size: 20px;
            }

            .oa02v9-nav-menu {
                flex-direction: column;
                gap: 5px;
            }

            .oa02v9-nav-link {
                padding: 10px 8px;
            }

            .oa02v9-step-desc {
                margin-left: 0;
            }

            .oa02v9-step-number {
                display: block;
                margin-bottom: 15px;
            }
        }