* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: #fff;
            color: #333;
            line-height: 1.7;
        }
        
        .nav {
            background: #7DA5F3;
            padding: 16px 20px;
            display: flex;
            align-items: center;
        }
        
        .nav a {
            display: flex;
            align-items: center;
        }
        
        .nav img {
            width: 40px;
            height: 40px;
            border-radius: 8px;
        }
        
        .breadcrumb {
            max-width: 800px;
            margin: 0 auto;
            padding: 20px 20px 0;
            font-size: 14px;
            color: #666;
        }
        
        .breadcrumb a {
            color: #7DA5F3;
            text-decoration: none;
        }
        
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        
        .container {
            max-width: 800px;
            margin: 0 auto;
            padding: 40px 20px 80px;
        }
        
        h1 {
            font-size: 42px;
            line-height: 1.2;
            margin-bottom: 20px;
            color: #222;
        }
        
        .meta {
            font-size: 15px;
            color: #888;
            margin-bottom: 40px;
        }
        
        .intro {
            font-size: 20px;
            line-height: 1.8;
            color: #444;
            margin-bottom: 40px;
            padding: 30px;
            background: #f8f9ff;
            border-left: 4px solid #7DA5F3;
            border-radius: 4px;
        }
        
        h2 {
            font-size: 28px;
            margin: 50px 0 20px;
            color: #222;
            border-bottom: 2px solid #f0f0f0;
            padding-bottom: 10px;
        }
        
        h3 {
            font-size: 22px;
            margin: 30px 0 15px;
            color: #333;
        }

        /* Accordion sections */
        details.sow-section {
            border: 1px solid #e8ecf0;
            border-radius: 10px;
            margin: 12px 0;
            overflow: hidden;
        }

        details.sow-section summary {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 22px;
            cursor: pointer;
            list-style: none;
            background: #f8f9ff;
            user-select: none;
            font-size: 18px;
            font-weight: 600;
            color: #333;
            transition: background 0.15s;
        }

        details.sow-section summary::-webkit-details-marker { display: none; }

        details.sow-section summary:hover {
            background: #eef2ff;
        }

        details.sow-section[open] summary {
            background: #eef2ff;
            border-bottom: 1px solid #e0e7ff;
        }

        details.sow-section summary .sow-icon {
            font-size: 20px;
            flex-shrink: 0;
        }

        details.sow-section summary .sow-chevron {
            margin-left: auto;
            font-size: 14px;
            color: #7DA5F3;
            transition: transform 0.2s;
        }

        details.sow-section[open] summary .sow-chevron {
            transform: rotate(180deg);
        }

        details.sow-section .sow-body {
            padding: 20px 22px;
            font-size: 16px;
            color: #555;
            line-height: 1.7;
        }
        
        p {
            margin-bottom: 20px;
            font-size: 17px;
        }
        
        ul {
            margin: 20px 0 30px 0;
            padding-left: 0;
            list-style: none;
        }
        
        ul li {
            margin-bottom: 12px;
            padding-left: 30px;
            position: relative;
            font-size: 16px;
            line-height: 1.6;
        }
        
        ul li:before {
            content: "✓";
            position: absolute;
            left: 0;
            color: #7DA5F3;
            font-weight: bold;
            font-size: 18px;
        }
        
        .note {
            background: #fff9e6;
            border-left: 4px solid #ffc107;
            padding: 20px;
            margin: 30px 0;
            border-radius: 4px;
        }
        
        .note strong {
            color: #f57c00;
        }
        
        .section-divider {
            margin: 50px 0;
            border: none;
            border-top: 3px solid #7DA5F3;
            opacity: 0.2;
        }
        
        .print-tip {
            background: #e8f5e9;
            border-left: 4px solid #4caf50;
            padding: 20px;
            margin: 30px 0;
            border-radius: 4px;
            font-size: 15px;
        }
        
        .download-section {
            text-align: center;
            margin: 60px 0;
            padding: 40px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 12px;
            color: white;
        }
        
        .download-section h2 {
            color: white;
            border: none;
            margin-top: 0;
        }
        
        .download-section p {
            font-size: 18px;
            margin-bottom: 30px;
            opacity: 0.95;
        }
        
        .app-store-badge {
            display: inline-block;
            margin: 8px;
        }
        
        .app-store-badge img {
            height: 50px;
            width: auto;
            border-radius: 8px;
            box-shadow: none;
            vertical-align: middle;
        }
        
        .app-store-badge img[alt*="App Store"] {
            height: 35px;
        }
        
        @media (max-width: 768px) {
            h1 {
                font-size: 32px;
            }
            
            h2 {
                font-size: 24px;
            }
            
            .intro {
                font-size: 18px;
                padding: 20px;
            }
        }
        
        @media print {
            .nav, .breadcrumb, .download-section, .print-tip {
                display: none;
            }
            
            body {
                font-size: 12pt;
            }
            
            h1 {
                font-size: 24pt;
            }
            
            h2 {
                font-size: 18pt;
                page-break-after: avoid;
            }
            
            ul li {
                page-break-inside: avoid;
            }
        }