* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background-color: #faf9f8;
            color: #1e1e2a;
            line-height: 1.5;
            padding: 2rem 1rem;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            background: white;
            border-radius: 32px;
            box-shadow: 0 12px 30px rgba(0,0,0,0.05);
            overflow: hidden;
            padding: 2rem 2rem 3rem;
        }
        h1 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: #2c2c3a;
            line-height: 1.2;
        }
        .subhead {
            font-size: 1.1rem;
            color: #5a5a6e;
            border-left: 4px solid #cb6e6e;
            padding-left: 1rem;
            margin-bottom: 2rem;
        }
        .toc {
            background: #f3f1ed;
            padding: 1.5rem 2rem;
            border-radius: 24px;
            margin: 2rem 0 2rem 0;
        }
        .toc h2 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            font-weight: 600;
        }
        .toc ul {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            list-style: none;
            padding-left: 0;
        }
        .toc li {
            margin: 0;
        }
        .toc a {
            text-decoration: none;
            color: #2c5f8a;
            font-weight: 500;
            border-bottom: 1px dotted transparent;
            transition: border 0.2s;
        }
        .toc a:hover {
            border-bottom: 1px dotted #2c5f8a;
        }
        h2 {
            font-size: 1.7rem;
            margin: 2rem 0 1rem;
            padding-top: 1rem;
            border-top: 2px solid #eae6e0;
            scroll-margin-top: 20px;
        }
        h3 {
            font-size: 1.3rem;
            margin: 1.5rem 0 0.75rem;
            font-weight: 600;
            color: #2c2c3a;
            scroll-margin-top: 20px;
        }
        h4 {
            font-size: 1.1rem;
            margin: 1rem 0 0.5rem;
            font-weight: 600;
            color: #3e3e50;
        }
        p {
            margin-bottom: 1rem;
            font-size: 1rem;
            color: #2d2d3a;
        }
        ul, ol {
            margin: 0.75rem 0 1.25rem 1.8rem;
        }
        li {
            margin-bottom: 0.3rem;
        }
        .highlight {
            background: #fef6e0;
            padding: 0.2rem 0.3rem;
            border-radius: 8px;
        }
        .stat-badge {
            background: #eef2f5;
            border-left: 4px solid #cb6e6e;
            padding: 0.8rem 1.2rem;
            margin: 1.2rem 0;
            border-radius: 12px;
            font-weight: 500;
        }
        footer {
            margin-top: 3rem;
            font-size: 0.8rem;
            color: #7c7c8a;
            text-align: center;
            border-top: 1px solid #eae6e0;
            padding-top: 2rem;
        }
        @media (max-width: 680px) {
            .container {
                padding: 1.5rem;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.4rem;
            }
        }