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

        html, body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
        }

        /* 导航栏样式 */
        .ickfu-navbar-wrapper {
            background: linear-gradient(135deg, #0088cc 0%, #006da8 100%);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }

        .ickfu-navbar-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .ickfu-navbar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: white;
            font-size: 18px;
            font-weight: bold;
        }

        .ickfu-navbar-brand img {
            height: 40px;
            width: auto;
        }

        .ickfu-navbar-menu {
            display: flex;
            gap: 30px;
            align-items: center;
            list-style: none;
        }

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

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

        /* 主容器 */
        .ickfu-main-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 英雄区域 */
        .ickfu-hero-section {
            background: linear-gradient(135deg, #0088cc 0%, #00c8ff 100%);
            color: white;
            padding: 80px 20px;
            text-align: center;
            margin-bottom: 60px;
            border-radius: 0;
        }

        .ickfu-hero-title {
            font-size: 48px;
            font-weight: bold;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .ickfu-hero-subtitle {
            font-size: 20px;
            margin-bottom: 30px;
            opacity: 0.95;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .ickfu-cta-button {
            display: inline-block;
            background-color: #ffcc00;
            color: #0088cc;
            padding: 16px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: bold;
            font-size: 16px;
            transition: all 0.3s ease;
            border: 2px solid #ffcc00;
            cursor: pointer;
        }

        .ickfu-cta-button:hover {
            background-color: white;
            color: #0088cc;
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
        }

        /* 内容区域 */
        .ickfu-content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin-bottom: 60px;
        }

        .ickfu-main-content {
            flex: 1;
        }

        .ickfu-sidebar {
            background-color: #f8f9fa;
            padding: 30px;
            border-radius: 8px;
            height: fit-content;
        }

        /* 标题样式 */
        .ickfu-page-title {
            font-size: 42px;
            color: #0088cc;
            margin-bottom: 30px;
            font-weight: bold;
            line-height: 1.2;
        }

        .ickfu-section-title {
            font-size: 28px;
            color: #0088cc;
            margin-top: 40px;
            margin-bottom: 20px;
            font-weight: bold;
            padding-bottom: 10px;
            border-bottom: 3px solid #0088cc;
        }

        .ickfu-subsection-title {
            font-size: 22px;
            color: #333;
            margin-top: 30px;
            margin-bottom: 15px;
            font-weight: 600;
        }

        /* 段落和文本 */
        .ickfu-paragraph {
            margin-bottom: 20px;
            text-align: justify;
            line-height: 1.8;
            color: #555;
        }

        .ickfu-highlight-text {
            color: #0088cc;
            font-weight: bold;
        }

        /* 步骤列表 */
        .ickfu-steps-container {
            background-color: #f8f9fa;
            padding: 30px;
            border-radius: 8px;
            margin-bottom: 30px;
        }

        .ickfu-step-item {
            display: flex;
            gap: 20px;
            margin-bottom: 30px;
        }

        .ickfu-step-item:last-child {
            margin-bottom: 0;
        }

        .ickfu-step-number {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 50px;
            height: 50px;
            background-color: #0088cc;
            color: white;
            border-radius: 50%;
            font-weight: bold;
            font-size: 22px;
            flex-shrink: 0;
        }

        .ickfu-step-content {
            flex: 1;
        }

        .ickfu-step-title {
            font-size: 18px;
            font-weight: 600;
            color: #333;
            margin-bottom: 10px;
        }

        .ickfu-step-description {
            color: #666;
            line-height: 1.6;
        }

        /* 功能列表 */
        .ickfu-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            margin-bottom: 40px;
        }

        .ickfu-feature-card {
            background: white;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            padding: 25px;
            transition: all 0.3s ease;
        }

        .ickfu-feature-card:hover {
            border-color: #0088cc;
            box-shadow: 0 8px 20px rgba(0, 136, 204, 0.15);
            transform: translateY(-5px);
        }

        .ickfu-feature-icon {
            font-size: 40px;
            margin-bottom: 15px;
        }

        .ickfu-feature-title {
            font-size: 18px;
            font-weight: 600;
            color: #333;
            margin-bottom: 10px;
        }

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

        /* 提示框 */
        .ickfu-tip-box {
            background-color: #e3f2fd;
            border-left: 4px solid #0088cc;
            padding: 20px;
            margin-bottom: 25px;
            border-radius: 4px;
        }

        .ickfu-tip-title {
            font-weight: bold;
            color: #0088cc;
            margin-bottom: 8px;
        }

        .ickfu-tip-content {
            color: #555;
            font-size: 14px;
            line-height: 1.6;
        }

        /* 警告框 */
        .ickfu-warning-box {
            background-color: #fff3e0;
            border-left: 4px solid #ff9800;
            padding: 20px;
            margin-bottom: 25px;
            border-radius: 4px;
        }

        .ickfu-warning-title {
            font-weight: bold;
            color: #ff9800;
            margin-bottom: 8px;
        }

        /* 表格 */
        .ickfu-table-wrapper {
            overflow-x: auto;
            margin-bottom: 30px;
        }

        .ickfu-comparison-table {
            width: 100%;
            border-collapse: collapse;
            background: white;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        .ickfu-comparison-table thead {
            background-color: #0088cc;
            color: white;
        }

        .ickfu-comparison-table th {
            padding: 15px;
            text-align: left;
            font-weight: 600;
        }

        .ickfu-comparison-table td {
            padding: 15px;
            border-bottom: 1px solid #e0e0e0;
        }

        .ickfu-comparison-table tbody tr:hover {
            background-color: #f5f5f5;
        }

        /* FAQ区域 */
        .ickfu-faq-section {
            margin-bottom: 40px;
        }

        .ickfu-faq-item {
            background: white;
            border: 1px solid #e0e0e0;
            margin-bottom: 15px;
            border-radius: 6px;
            overflow: hidden;
        }

        .ickfu-faq-question {
            padding: 20px;
            background-color: #f8f9fa;
            font-weight: 600;
            color: #333;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color 0.3s ease;
        }

        .ickfu-faq-question:hover {
            background-color: #e8f4ff;
        }

        .ickfu-faq-answer {
            padding: 20px;
            color: #666;
            line-height: 1.8;
            display: none;
        }

        .ickfu-faq-answer.active {
            display: block;
        }

        .ickfu-faq-toggle {
            font-size: 20px;
            transition: transform 0.3s ease;
        }

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

        /* 侧边栏 */
        .ickfu-sidebar-title {
            font-size: 18px;
            font-weight: bold;
            color: #0088cc;
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid #0088cc;
        }

        .ickfu-sidebar-list {
            list-style: none;
        }

        .ickfu-sidebar-item {
            margin-bottom: 12px;
        }

        .ickfu-sidebar-link {
            color: #0088cc;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s ease;
        }

        .ickfu-sidebar-link:hover {
            color: #006da8;
            text-decoration: underline;
        }

        /* 页脚 */
        .ickfu-footer-wrapper {
            background-color: #1a1a1a;
            color: white;
            padding: 60px 20px 30px;
            margin-top: 80px;
        }

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

        .ickfu-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .ickfu-footer-column-title {
            font-size: 16px;
            font-weight: bold;
            margin-bottom: 15px;
            color: #0088cc;
        }

        .ickfu-footer-list {
            list-style: none;
        }

        .ickfu-footer-item {
            margin-bottom: 10px;
        }

        .ickfu-footer-link {
            color: #ccc;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s ease;
        }

        .ickfu-footer-link:hover {
            color: #0088cc;
        }

        .ickfu-footer-divider {
            border-top: 1px solid #444;
            padding-top: 30px;
            margin-top: 30px;
            text-align: center;
            color: #999;
            font-size: 14px;
        }

        /* 面包屑导航 */
        .ickfu-breadcrumb {
            margin-bottom: 30px;
            font-size: 14px;
        }

        .ickfu-breadcrumb-item {
            color: #0088cc;
            text-decoration: none;
            margin: 0 8px;
        }

        .ickfu-breadcrumb-item:hover {
            text-decoration: underline;
        }

        .ickfu-breadcrumb-separator {
            color: #999;
            margin: 0 5px;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .ickfu-navbar-menu {
                gap: 15px;
            }

            .ickfu-nav-link {
                font-size: 12px;
                padding: 6px 10px;
            }

            .ickfu-hero-title {
                font-size: 32px;
            }

            .ickfu-hero-subtitle {
                font-size: 16px;
            }

            .ickfu-page-title {
                font-size: 32px;
            }

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

            .ickfu-content-wrapper {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .ickfu-footer-grid {
                grid-template-columns: 1fr;
                gap: 25px;
            }

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

        @media (max-width: 600px) {
            .ickfu-navbar-container {
                height: auto;
                padding: 15px 20px;
                flex-direction: column;
                gap: 15px;
            }

            .ickfu-navbar-menu {
                flex-wrap: wrap;
                justify-content: center;
                gap: 10px;
            }

            .ickfu-hero-section {
                padding: 50px 20px;
                margin-bottom: 40px;
            }

            .ickfu-hero-title {
                font-size: 24px;
            }

            .ickfu-hero-subtitle {
                font-size: 14px;
            }

            .ickfu-page-title {
                font-size: 24px;
            }

            .ickfu-section-title {
                font-size: 18px;
            }

            .ickfu-cta-button {
                padding: 12px 30px;
                font-size: 14px;
            }
        }