.site-header {
            background: #204ed0;
            color: white;
            padding: 1.5rem 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

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

        .site-header h1 {
            font-size: 1.8rem;
        }

        .site-header nav a {
            color: white;
            text-decoration: none;
            margin-left: 2rem;
            transition: opacity 0.3s;
        }

        .site-header nav a:hover {
            opacity: 0.8;
        }

        .main-container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 20px;
        }

        .tool-section {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            margin-bottom: 2rem;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
        }

        .tool-section h2 {
            color: #204ed0;
            margin-bottom: 1.5rem;
            font-size: 1.8rem;
        }

        .editor-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin-bottom: 1.5rem;
        }

        .editor-box {
            display: flex;
            flex-direction: column;
        }

        .editor-box label {
            color: #204ed0;
            font-weight: 600;
            margin-bottom: 0.5rem;
            font-size: 1.1rem;
        }

        textarea {
            width: 100%;
            min-height: 300px;
            padding: 1rem;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-family: 'Courier New', monospace;
            font-size: 14px;
            resize: vertical;
            transition: border-color 0.3s;
        }

        textarea:focus {
            outline: none;
            border-color: #204ed0;
        }

        .button-group {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        button {
            background: #204ed0;
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 8px;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s;
            font-weight: 600;
        }

        button:hover {
            background: #1a3ea8;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(32, 78, 208, 0.3);
        }

        button:active {
            transform: translateY(0);
        }

        .stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin-top: 1.5rem;
        }

        .stat-box {
            background: #f5f7ff;
            padding: 1rem;
            border-radius: 8px;
            border-left: 4px solid #204ed0;
        }

        .stat-box .label {
            color: #666;
            font-size: 0.9rem;
        }

        .stat-box .value {
            color: #204ed0;
            font-size: 1.5rem;
            font-weight: bold;
            margin-top: 0.3rem;
        }

        .about-section, .faq-section {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            margin-bottom: 2rem;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
        }

        .about-section h2, .faq-section h2 {
            color: #204ed0;
            margin-bottom: 1rem;
            font-size: 1.8rem;
        }

        .about-section p {
            color: #555;
            margin-bottom: 1rem;
            line-height: 1.8;
        }

        .faq-item {
            margin-bottom: 1.5rem;
            border-bottom: 1px solid #e0e0e0;
            padding-bottom: 1rem;
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-question {
            color: #204ed0;
            font-weight: 600;
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }

        .faq-answer {
            color: #666;
            line-height: 1.8;
        }

        .site-footer {
            background: #204ed0;
            color: white;
            text-align: center;
            padding: 2rem 0;
            margin-top: 3rem;
        }

        .site-footer p {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (max-width: 768px) {
            .editor-container {
                grid-template-columns: 1fr;
            }

            .site-header .container {
                flex-direction: column;
                text-align: center;
            }

            .site-header nav a {
                margin: 0.5rem 1rem;
            }
        }