.page-13win {
            font-family: 'Arial', sans-serif;
            color: #333333;
            line-height: 1.6;
            background-color: #f8f9fa;
        }

        .page-13win__hero-section {
            position: relative;
            width: 100%;
            overflow: hidden;
            padding: 10px 0 60px 0; /* body已承担header offset，这里仅为内容区留白 */
            background-color: #e0f2f7; /* Light background for the hero section */
            text-align: center;
        }

        .page-13win__hero-image-wrapper {
            width: 100%;
            max-width: 100%;
            margin: 0 auto;
            box-sizing: border-box;
        }

        .page-13win__hero-image {
            width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        }

        .page-13win__hero-content {
            max-width: 900px;
            margin: 30px auto 0 auto;
            padding: 0 20px;
        }

        .page-13win__main-title {
            font-size: clamp(2.2rem, 5vw, 3rem);
            font-weight: 700;
            color: #2563eb;
            margin-bottom: 15px;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .page-13win__hero-description {
            font-size: clamp(1rem, 2.5vw, 1.15rem);
            color: #64748b;
            margin-bottom: 30px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .page-13win__cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            margin-top: 30px;
        }

        .page-13win__btn {
            display: inline-block;
            padding: 14px 28px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            font-size: 1rem;
            transition: all 0.3s ease;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
            text-align: center;
            box-sizing: border-box;
            white-space: normal;
            word-wrap: break-word;
        }

        .page-13win__btn-primary {
            background-color: #2563eb;
            color: #ffffff;
            border: 2px solid #2563eb;
        }

        .page-13win__btn-primary:hover {
            background-color: #1e40af;
            border-color: #1e40af;
            transform: translateY(-2px);
        }

        .page-13win__btn-secondary {
            background-color: #ffffff;
            color: #2563eb;
            border: 2px solid #2563eb;
        }

        .page-13win__btn-secondary:hover {
            background-color: #f0f8ff;
            color: #1e40af;
            transform: translateY(-2px);
        }

        .page-13win__floating-login {
            position: fixed;
            bottom: 20px;
            right: 20px;
            background-color: #ef4444; /* Eye-catching red for promotion */
            color: #ffffff;
            padding: 12px 25px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.95rem;
            text-decoration: none;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
            z-index: 1000;
            animation: pulse 2s infinite;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            box-sizing: border-box;
            max-width: 180px;
        }

        .page-13win__floating-login:hover {
            background-color: #dc2626;
            transform: scale(1.05);
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }

        .page-13win__section {
            padding: 60px 20px;
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
            box-sizing: border-box;
        }

        .page-13win__section-title {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            color: #2563eb;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .page-13win__section-description {
            font-size: 1.05rem;
            color: #64748b;
            max-width: 800px;
            margin: 0 auto 40px auto;
        }

        .page-13win__grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .page-13win__card {
            background-color: #ffffff;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            padding: 30px;
            text-align: left;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            box-sizing: border-box;
            color: #333333;
        }

        .page-13win__card:hover {
            transform: translateY(-8px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
        }

        .page-13win__card-image-wrapper {
            width: 100%;
            height: 200px;
            overflow: hidden;
            border-radius: 8px;
            margin-bottom: 20px;
        }

        .page-13win__card-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .page-13win__card-title {
            font-size: 1.5rem;
            color: #2563eb;
            margin-bottom: 15px;
            font-weight: 600;
            line-height: 1.3;
        }

        .page-13win__card-text {
            font-size: 0.95rem;
            color: #64748b;
            margin-bottom: 20px;
        }

        .page-13win__list {
            list-style: none;
            padding: 0;
            margin: 0;
            text-align: left;
        }

        .page-13win__list-item {
            font-size: 1rem;
            color: #333333;
            margin-bottom: 10px;
            position: relative;
            padding-left: 30px;
            box-sizing: border-box;
        }

        .page-13win__list-item::before {
            content: '✓';
            color: #2563eb;
            position: absolute;
            left: 0;
            font-weight: 700;
        }

        .page-13win__game-category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }

        .page-13win__game-category-item {
            text-align: center;
            background-color: #ffffff;
            border-radius: 10px;
            padding: 20px 15px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
            transition: transform 0.2s ease;
            box-sizing: border-box;
        }

        .page-13win__game-category-item:hover {
            transform: translateY(-5px);
        }

        .page-13win__game-icon {
            width: 80px;
            height: 80px;
            margin-bottom: 15px;
            object-fit: contain;
            display: block;
            margin-left: auto;
            margin-right: auto;
        }

        .page-13win__game-name {
            font-size: 1.1rem;
            font-weight: 600;
            color: #2563eb;
            margin: 0;
        }

        .page-13win__faq-section {
            background-color: #f0f8ff;
        }

        .page-13win__faq-item {
            background-color: #ffffff;
            border-radius: 8px;
            margin-bottom: 15px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            overflow: hidden;
            box-sizing: border-box;
        }

        .page-13win__faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 25px;
            font-size: 1.15rem;
            font-weight: 600;
            color: #333333;
            cursor: pointer;
            user-select: none;
            transition: background-color 0.3s ease;
        }

        .page-13win__faq-question:hover {
            background-color: #f5f5f5;
        }

        .page-13win__faq-question h3 {
            margin: 0;
            font-size: inherit;
            font-weight: inherit;
            color: inherit;
            pointer-events: none; /* Prevent h3 from blocking click */
        }

        .page-13win__faq-toggle {
            font-size: 1.8rem;
            font-weight: 300;
            line-height: 1;
            color: #2563eb;
            pointer-events: none; /* Prevent toggle icon from blocking click */
            transition: transform 0.3s ease;
        }

        .page-13win__faq-item.active .page-13win__faq-question {
            background-color: #e0f2f7;
            color: #2563eb;
        }

        .page-13win__faq-item.active .page-13win__faq-toggle {
            transform: rotate(45deg);
            color: #2563eb;
        }

        .page-13win__faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 25px;
            opacity: 0;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
            color: #64748b;
        }

        .page-13win__faq-item.active .page-13win__faq-answer {
            max-height: 2000px !important;
            padding: 20px 25px !important;
            opacity: 1;
        }

        .page-13win__contact-info {
            background-color: #2563eb;
            color: #ffffff;
            padding: 60px 20px;
            text-align: center;
        }

        .page-13win__contact-title {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            margin-bottom: 20px;
            font-weight: 700;
        }

        .page-13win__contact-text {
            font-size: 1.1rem;
            margin-bottom: 30px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .page-13win__contact-link {
            color: #ffffff;
            text-decoration: underline;
            font-weight: 600;
        }

        .page-13win__contact-link:hover {
            color: #e0f2f7;
        }

        /* Responsive adjustments */
        @media (max-width: 768px) {
            .page-13win__hero-section {
                padding: 10px 0 40px 0;
            }

            .page-13win__hero-content {
                margin-top: 20px;
            }

            .page-13win__main-title {
                font-size: 2rem;
            }

            .page-13win__hero-description {
                font-size: 1rem;
            }

            .page-13win__cta-buttons {
                flex-direction: column;
                gap: 15px;
            }

            .page-13win__btn {
                width: 100% !important;
                max-width: 100% !important;
                padding: 12px 20px;
                font-size: 0.95rem;
            }

            .page-13win__floating-login {
                bottom: 15px;
                right: 15px;
                padding: 10px 20px;
                font-size: 0.9rem;
                max-width: 160px;
            }

            .page-13win__section {
                padding: 40px 15px;
            }

            .page-13win__section-title {
                font-size: 1.8rem;
            }

            .page-13win__section-description {
                font-size: 0.95rem;
                margin-bottom: 30px;
            }

            .page-13win__grid {
                grid-template-columns: 1fr;
                gap: 25px;
            }

            .page-13win__card {
                padding: 25px;
            }

            .page-13win__card-title {
                font-size: 1.3rem;
            }

            .page-13win__card-text {
                font-size: 0.9rem;
            }

            .page-13win__list-item {
                font-size: 0.95rem;
                padding-left: 25px;
            }

            .page-13win__game-category-grid {
                grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
                gap: 15px;
            }

            .page-13win__game-icon {
                width: 60px;
                height: 60px;
            }

            .page-13win__game-name {
                font-size: 0.9rem;
            }

            .page-13win__faq-question {
                font-size: 1rem;
                padding: 15px 20px;
            }

            .page-13win__faq-answer {
                padding: 15px 20px !important;
            }

            .page-13win__contact-info {
                padding: 40px 15px;
            }

            .page-13win__contact-title {
                font-size: 1.8rem;
            }

            .page-13win__contact-text {
                font-size: 0.95rem;
            }

            /* Mobile specific image handling */
            .page-13win img {
                max-width: 100% !important;
                width: 100% !important;
                height: auto !important;
                display: block !important;
            }
            .page-13win__section,
            .page-13win__card,
            .page-13win__container,
            .page-13win__hero-image-wrapper,
            .page-13win__cta-buttons,
            .page-13win__game-category-grid,
            .page-13win__faq-item {
                max-width: 100% !important;
                width: 100% !important;
                box-sizing: border-box !important;
                padding-left: 15px;
                padding-right: 15px;
            }
            .page-13win__list-item {
                width: 100% !important;
                max-width: 100% !important;
                box-sizing: border-box !important;
                margin-left: 0 !important;
                margin-right: 0 !important;
                word-wrap: break-word !important;
                overflow-wrap: break-word !important;
                word-break: break-word !important;
            }
            .page-13win ul,
            .page-13win ol {
                width: 100% !important;
                max-width: 100% !important;
                box-sizing: border-box !important;
                padding: 0 !important;
                margin-left: 0 !important;
                margin-right: 0 !important;
            }
        }