* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 40px 20px;
        }

        .container {
            max-width: 1000px;
            margin: 0 auto;
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
            padding: 50px;
        }
        .top-actions {
            display: flex;
            justify-content: flex-start;
            margin-bottom: 20px;
        }
        .hall-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(102, 126, 234, 0.12);
            color: #4c63d2;
            padding: 10px 18px;
            border-radius: 999px;
            text-decoration: none;
            font-size: 14px;
            font-weight: 700;
            border: 1px solid rgba(102, 126, 234, 0.25);
            transition: all 0.25s ease;
        }
        .hall-btn:hover {
            transform: translateY(-1px);
            background: rgba(102, 126, 234, 0.18);
            box-shadow: 0 6px 18px rgba(102, 126, 234, 0.2);
        }

        h1 {
            text-align: center;
            color: #667eea;
            font-size: 36px;
            margin-bottom: 40px;
            font-weight: 700;
        }

        h2 {
            color: #764ba2;
            font-size: 28px;
            margin-top: 50px;
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 3px solid #667eea;
            font-weight: 600;
        }

        h3 {
            color: #667eea;
            font-size: 22px;
            margin-top: 35px;
            margin-bottom: 20px;
            font-weight: 600;
        }

        p {
            line-height: 1.8;
            color: #333;
            margin-bottom: 20px;
            font-size: 16px;
        }

        ul, ol {
            margin-left: 30px;
            margin-bottom: 25px;
        }

        li {
            line-height: 2;
            color: #555;
            margin-bottom: 12px;
            font-size: 16px;
        }

        .section {
            margin-bottom: 50px;
        }

        .highlight {
            background: #f0f4ff;
            padding: 20px;
            border-radius: 10px;
            border-left: 5px solid #667eea;
            margin: 25px 0;
        }

        .note {
            background: #fff3cd;
            padding: 15px 20px;
            border-radius: 8px;
            border-left: 5px solid #ffc107;
            margin: 20px 0;
            color: #856404;
        }

        .back-btn {
            display: inline-block;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 15px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-size: 18px;
            margin-top: 40px;
            transition: transform 0.3s, box-shadow 0.3s;
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
        }

        .back-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
        }

        .btn-container {
            text-align: center;
            margin-top: 50px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 30px 20px;
            }

            h1 {
                font-size: 28px;
            }

            h2 {
                font-size: 24px;
            }

            h3 {
                font-size: 20px;
            }

            p, li {
                font-size: 15px;
            }
        }