* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background-color: #f9fafb;
            padding: 32px 20px;
            margin: 0;
            color: #1f2937;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: white;
            border-radius: 28px;
            box-shadow: 0 12px 30px rgba(0,0,0,0.05);
            padding: 32px 28px 48px;
        }
        h3 {
            font-size: 24px;
            text-align: center;
            margin-top: 20px;
            margin-bottom: 16px;
            font-weight: 600;
            color: #111827;
        }
        p, li {
            font-size: 16px;
            line-height: 1.6;
            color: #2c3e4f;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background-color: #007BFF;
            color: #fff;
            text-decoration: none;
            font-size: 16px;
            margin-top: 24px;
            margin-bottom: 8px;
            border-radius: 40px;
            font-weight: 500;
            transition: background 0.2s ease;
            box-shadow: 0 2px 6px rgba(0,123,255,0.2);
            border: none;
            cursor: pointer;
        }
        .btn:hover {
            background-color: #0056b3;
            text-decoration: none;
        }
        .suitable-list {
            margin: 10px 0 10px 26px;
            list-style: disc;
        }
        .suitable-list li {
            margin: 5px 0;
        }
        .lightbox-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.9);
            z-index: 99999;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            transition: opacity 0.3s ease;
            visibility: hidden;
        }
        .lightbox-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        .lightbox-content {
            max-width: 90%;
            max-height: 90%;
        }
        .lightbox-content img {
            max-width: 100%;
            max-height: 90vh;
            object-fit: contain;
            border-radius: 8px;
            box-shadow: 0 0 30px rgba(0,0,0,0.3);
        }
        .close-lightbox {
            position: absolute;
            top: 20px;
            right: 40px;
            color: white;
            font-size: 40px;
            font-weight: bold;
            cursor: pointer;
            z-index: 100000;
        }
        .close-lightbox:hover {
            color: #ccc;
        }
        .section-card {
            background: #ffffff;
            border-radius: 20px;
            margin-bottom: 32px;
            padding: 4px 0 6px;
        }
        .badge-icon {
            font-size: 26px;
            font-weight: 500;
            background: #eef2ff;
            display: inline-block;
            width: 48px;
            height: 48px;
            line-height: 48px;
            text-align: center;
            border-radius: 32px;
            margin-right: 14px;
            color: #1e3a8a;
        }
        .flex-title {
            display: flex;
            align-items: center;
            margin: 16px 0 14px 0;
        }
        .flex-title h4 {
            font-size: 22px;
            font-weight: 700;
            color: #0f172a;
            margin: 0;
        }
        .lang-divider {
            margin: 40px 0 24px;
            text-align: center;
            position: relative;
        }
        .lang-divider span {
            background: white;
            padding: 0 20px;
            font-size: 14px;
            font-weight: 600;
            color: #6c757d;
            letter-spacing: 2px;
            position: relative;
            z-index: 1;
        }
        .lang-divider::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 0;
            right: 0;
            height: 1px;
            background: #e5e7eb;
            z-index: 0;
        }
        .en-section {
            margin-bottom: 8px;
        }
        .zh-section {
            margin-bottom: 8px;
        }
        @media (max-width: 700px) {
            .container {
                padding: 20px 16px 32px;
            }
            .btn {
                font-size: 14px;
                padding: 10px 20px;
            }
            .flex-title h4 {
                font-size: 20px;
            }
            .badge-icon {
                width: 40px;
                height: 40px;
                line-height: 40px;
                font-size: 22px;
                margin-right: 10px;
            }
            .section-card {
                margin-bottom: 26px;
            }
        }