* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Noto Sans SC', 'Arial', sans-serif;
            line-height: 1.8;
            color: #2c2416;
            background: linear-gradient(135deg, #f5e6d3 0%, #e8d5b7 100%);
            background-image: 
                radial-gradient(circle at 20% 80%, rgba(218, 165, 32, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(220, 20, 60, 0.08) 0%, transparent 50%);
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        
        header {
            background: linear-gradient(135deg, #8b0000 0%, #dc143c 50%, #8b0000 100%);
            color: #ffd700;
            padding: 50px 20px;
            text-align: center;
            border-radius: 15px;
            margin-bottom: 30px;
            box-shadow: 0 8px 20px rgba(139, 0, 0, 0.4);
            border: 3px solid #ffd700;
            position: relative;
            overflow: hidden;
        }
        
        header::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: repeating-linear-gradient(
                45deg,
                transparent,
                transparent 10px,
                rgba(255, 215, 0, 0.03) 10px,
                rgba(255, 215, 0, 0.03) 20px
            );
            animation: shimmer 20s linear infinite;
        }
        
        @keyframes shimmer {
            0% { transform: translate(0, 0); }
            100% { transform: translate(50%, 50%); }
        }
        
        h1 {
            font-family: 'Noto Serif SC', serif;
            font-size: 3.5em;
            margin-bottom: 15px;
            text-shadow: 3px 3px 6px rgba(0,0,0,0.5);
            font-weight: 900;
            position: relative;
            z-index: 1;
        }
        
        .subtitle {
            font-size: 1.3em;
            font-style: italic;
            opacity: 0.95;
            position: relative;
            z-index: 1;
            font-family: 'Noto Serif SC', serif;
        }
        
        .chinese-character {
            font-size: 5em;
            display: block;
            margin: 10px 0;
            font-family: 'Noto Serif SC', serif;
            text-shadow: 4px 4px 8px rgba(0,0,0,0.5);
        }
        
        .section {
            background: linear-gradient(to bottom, #fffef9 0%, #faf8f3 100%);
            margin: 25px 0;
            padding: 35px;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(139, 0, 0, 0.15);
            border: 2px solid #daa520;
            border-left: 6px solid #dc143c;
            position: relative;
        }
        
        .section::before {
            content: '◆';
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 2em;
            color: #dc143c;
            opacity: 0.2;
        }
        
        h2 {
            font-family: 'Noto Serif SC', serif;
            color: #8b0000;
            font-size: 2.3em;
            margin-bottom: 25px;
            border-bottom: 4px solid #daa520;
            padding-bottom: 12px;
            text-shadow: 1px 1px 2px rgba(139, 0, 0, 0.2);
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        h2::before {
            content: '❖';
            color: #dc143c;
            font-size: 0.8em;
        }
        
        h3 {
            font-family: 'Noto Serif SC', serif;
            color: #a52a2a;
            font-size: 1.8em;
            margin-top: 30px;
            margin-bottom: 18px;
            border-left: 5px solid #daa520;
            padding-left: 15px;
        }
        
        h4 {
            color: #8b4513;
            font-size: 1.3em;
            margin-top: 20px;
            margin-bottom: 12px;
            font-family: 'Noto Serif SC', serif;
        }
        
        p {
            margin-bottom: 18px;
            text-align: justify;
            text-indent: 2em;
        }
        
        ul, ol {
            margin-left: 40px;
            margin-bottom: 18px;
        }
        
        li {
            margin-bottom: 10px;
        }
        
        .go-board-container {
            background: linear-gradient(145deg, #d4a574, #c19a6b);
            padding: 30px;
            border-radius: 12px;
            margin: 25px 0;
            box-shadow: 0 6px 20px rgba(0,0,0,0.3);
            border: 3px solid #8b4513;
        }
        
        .concept-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
            margin: 25px 0;
        }
        
        .concept-card {
            background: linear-gradient(135deg, #fff9f0 0%, #fff5e6 100%);
            border: 3px solid #daa520;
            border-radius: 10px;
            padding: 20px;
            box-shadow: 0 4px 12px rgba(139, 0, 0, 0.2);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            position: relative;
        }
        
        .concept-card::before {
            content: '✦';
            position: absolute;
            top: 10px;
            right: 15px;
            color: #dc143c;
            font-size: 1.5em;
            opacity: 0.3;
        }
        
        .concept-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 18px rgba(139, 0, 0, 0.3);
        }
        
        .concept-card h4 {
            color: #8b0000;
            margin-top: 0;
            border-bottom: 2px solid #daa520;
            padding-bottom: 8px;
            margin-bottom: 12px;
        }
        
        .quote {
            font-family: 'Noto Serif SC', serif;
            font-style: italic;
            background: linear-gradient(to right, rgba(220, 20, 60, 0.08), transparent);
            border-left: 5px solid #dc143c;
            padding: 20px 25px;
            margin: 25px 0;
            color: #5c3317;
            font-size: 1.15em;
            position: relative;
        }
        
        .quote::before {
            content: '"';
            font-size: 4em;
            color: #dc143c;
            opacity: 0.2;
            position: absolute;
            top: -10px;
            left: 10px;
            font-family: serif;
        }
        
        .quote-author {
            text-align: right;
            margin-top: 10px;
            font-weight: bold;
            color: #8b0000;
        }
        
        .proverb-box {
            background: linear-gradient(135deg, #8b0000 0%, #dc143c 100%);
            color: #ffd700;
            border: 3px solid #ffd700;
            border-radius: 12px;
            padding: 25px;
            margin: 25px 0;
            text-align: center;
            box-shadow: 0 6px 18px rgba(139, 0, 0, 0.4);
        }
        
        .proverb-box .chinese {
            font-family: 'Noto Serif SC', serif;
            font-size: 2em;
            margin-bottom: 15px;
            font-weight: bold;
        }
        
        .proverb-box .french {
            font-size: 1.2em;
            font-style: italic;
        }
        
        .warning-box {
            background: linear-gradient(to right, rgba(255, 140, 0, 0.15), transparent);
            border-left: 5px solid #ff8c00;
            padding: 18px;
            margin: 20px 0;
            border-radius: 5px;
        }
        
        .success-box {
            background: linear-gradient(to right, rgba(34, 139, 34, 0.15), transparent);
            border-left: 5px solid #228b22;
            padding: 18px;
            margin: 20px 0;
            border-radius: 5px;
        }
        
        .info-box {
            background: linear-gradient(to right, rgba(218, 165, 32, 0.15), transparent);
            border-left: 5px solid #daa520;
            padding: 18px;
            margin: 20px 0;
            border-radius: 5px;
        }
        
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 25px 0;
            background: white;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        }
        
        th, td {
            border: 2px solid #daa520;
            padding: 15px;
            text-align: left;
        }
        
        th {
            background: linear-gradient(135deg, #8b0000 0%, #dc143c 100%);
            color: #ffd700;
            font-family: 'Noto Serif SC', serif;
            font-weight: bold;
        }
        
        tr:nth-child(even) {
            background: #fff9f0;
        }
        
        tr:hover {
            background: #ffefd5;
        }
        
        .stone {
            display: inline-block;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            margin: 0 5px;
            vertical-align: middle;
            box-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        
        .black-stone {
            background: radial-gradient(circle at 30% 30%, #333, #000);
            border: 1px solid #000;
        }
        
        .white-stone {
            background: radial-gradient(circle at 30% 30%, #fff, #e8e8e8);
            border: 1px solid #999;
        }
        
        .footer {
            text-align: center;
            padding: 30px;
            color: #8b4513;
            margin-top: 50px;
            background: linear-gradient(to bottom, transparent, rgba(139, 0, 0, 0.1));
            border-top: 3px solid #daa520;
            font-family: 'Noto Serif SC', serif;
        }
        
        .highlight {
            background: linear-gradient(120deg, #ffd700 0%, #ffed4e 100%);
            padding: 2px 6px;
            border-radius: 3px;
            font-weight: bold;
        }
        
        .pattern-example {
            background: #f5e6d3;
            border: 2px solid #8b4513;
            border-radius: 8px;
            padding: 15px;
            margin: 15px 0;
            font-family: monospace;
        }
        
        .dragon-decoration {
            text-align: center;
            font-size: 3em;
            color: #dc143c;
            margin: 20px 0;
            opacity: 0.6;
        }
        
        @media (max-width: 768px) {
            h1 {
                font-size: 2.5em;
            }
            
            .chinese-character {
                font-size: 3em;
            }
            
            .concept-grid {
                grid-template-columns: 1fr;
            }
            
            .section {
                padding: 20px;
            }
        }