body {
            background-color: #f8fafc;
            font-family: "Microsoft JhengHei", "微軟正黑體", sans-serif;
            color: #334155;
            margin: 0;
            padding: 0;
        }
        .header {
            background: #fff;
            padding: 15px 40px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            text-decoration: none;
        }
        .logo {
            width: 150px;
        }
        .help-container {
            max-width: 1000px;
            margin: 40px auto;
            display: flex;
            gap: 30px;
            padding: 0 20px;
        }
        .help-sidebar {
            width: 260px;
            background: #fff;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
            overflow: hidden;
            flex-shrink: 0;
            align-self: flex-start;
            position: sticky;
            top: 100px;
        }
        .help-sidebar-header {
            background: var(--primary);
            color: #fff;
            padding: 15px 20px;
            font-size: 18px;
            font-weight: bold;
            text-align: center;
            letter-spacing: 1px;
        }
        .help-menu {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .help-menu-item {
            border-bottom: 1px solid #f1f5f9;
        }
        .help-menu-item:last-child {
            border-bottom: none;
        }
        .help-menu-link {
            display: block;
            padding: 16px 20px;
            color: #475569;
            text-decoration: none;
            font-size: 15px;
            font-weight: bold;
            transition: all 0.3s;
            position: relative;
        }
        .help-menu-link:hover, .help-menu-link.active {
            color: var(--primary);
            background: #f0fdfa;
        }
        .help-menu-link.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--primary);
        }
        .help-content {
            flex: 1;
            background: #fff;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
            padding: 40px;
            min-height: 500px;
        }
        .help-title {
            font-size: 24px;
            color: #1e293b;
            margin-top: 0;
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 2px solid #e2e8f0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .help-title::before {
            content: '';
            display: block;
            width: 6px;
            height: 24px;
            background: var(--primary);
            border-radius: 3px;
        }
        .help-article {
            display: none;
            line-height: 1.8;
            color: #475569;
        }
        .help-article.active {
            display: block;
            animation: fadeIn 0.4s ease-out forwards;
        }
        .help-article p {
            margin-bottom: 15px;
        }
        .help-article h3 {
            color: #1e293b;
            margin-top: 30px;
            margin-bottom: 15px;
        }
        .faq-list {
            list-style: none;
            padding: 0;
        }
        .faq-item {
            border: 1px solid #e2e8f0;
            border-radius: 8px;
            margin-bottom: 15px;
            overflow: hidden;
        }
        .faq-question {
            background: #f8fafc;
            padding: 15px 20px;
            cursor: pointer;
            font-weight: bold;
            color: #334155;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background 0.2s;
        }
        .faq-question:hover {
            background: #f1f5f9;
        }
        .faq-question::after {
            content: '＋';
            color: var(--primary);
            font-size: 18px;
            transition: transform 0.3s;
        }
        .faq-item.open .faq-question::after {
            content: '－';
            color: #ef4444;
        }
        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease-out;
            background: #fff;
            color: #475569;
        }
        .faq-item.open .faq-answer {
            padding: 20px;
            max-height: 1000px;
            border-top: 1px solid #e2e8f0;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        @media(max-width: 768px) {
            .help-container {
                flex-direction: column;
            }
            .help-sidebar {
                width: 100%;
                position: static;
            }
            .help-content {
                padding: 20px;
            }
            .header {
                padding: 15px 20px;
            }
        }