/* CSS của trang 'gift-code-guide' */
        .page-gift-code-guide {
            font-family: 'Arial', sans-serif;
            line-height: 1.6;
            color: #333333; /* Màu chữ chính, tương phản tốt với nền sáng mặc định */
            background-color: #f8f9fa;
        }

        .page-gift-code-guide__hero-section {
            position: relative;
            padding-top: 10px; /* Nhỏ để tránh đè lên header, dựa vào body padding-top */
            padding-bottom: 40px;
            text-align: center;
            color: #ffffff;
            background-color: #2563eb;
            overflow: hidden;
        }

        .page-gift-code-guide__hero-image {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
            position: absolute;
            top: 0;
            left: 0;
            z-index: 0;
            opacity: 0.15;
        }

        .page-gift-code-guide__hero-content {
            position: relative;
            z-index: 1;
            max-width: 900px;
            margin: 0 auto;
            padding: 20px;
        }

        .page-gift-code-guide__hero-content h1 {
            font-size: clamp(2em, 4vw, 3.5em);
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.2;
            color: #ffffff;
        }

        .page-gift-code-guide__hero-content p {
            font-size: 1.1em;
            margin-bottom: 30px;
            color: #f0f0f0;
        }

        .page-gift-code-guide__cta-button {
            display: inline-block;
            background-color: #64748b;
            color: #ffffff;
            padding: 15px 30px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: bold;
            font-size: 1.1em;
            transition: background-color 0.3s ease, transform 0.2s ease;
            border: none;
            cursor: pointer;
        }

        .page-gift-code-guide__cta-button:hover {
            background-color: #505e72;
            transform: translateY(-2px);
        }

        .page-gift-code-guide__section {
            padding: 60px 20px;
            max-width: 1200px;
            margin: 0 auto;
            background-color: #ffffff;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
            margin-bottom: 40px;
        }

        .page-gift-code-guide__section:last-of-type {
            margin-bottom: 0;
        }

        .page-gift-code-guide__section h2 {
            font-size: 2.2em;
            color: #2563eb;
            text-align: center;
            margin-bottom: 40px;
            font-weight: 700;
        }

        .page-gift-code-guide__section h3 {
            font-size: 1.6em;
            color: #333333;
            margin-top: 30px;
            margin-bottom: 15px;
            font-weight: 600;
        }

        .page-gift-code-guide__section p {
            margin-bottom: 15px;
            color: #555555;
        }

        .page-gift-code-guide__list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .page-gift-code-guide__list-item {
            background-color: #f0f8ff;
            border-left: 5px solid #2563eb;
            padding: 15px 20px;
            margin-bottom: 10px;
            border-radius: 5px;
            color: #333333;
            box-sizing: border-box;
        }

        .page-gift-code-guide__list-item strong {
            color: #2563eb;
        }

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

        .page-gift-code-guide__step-card {
            background-color: #f9f9f9;
            border: 1px solid #e0e0e0;
            border-radius: 10px;
            padding: 25px;
            text-align: center;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .page-gift-code-guide__step-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
        }

        .page-gift-code-guide__step-card h3 {
            color: #2563eb;
            font-size: 1.4em;
            margin-top: 15px;
            margin-bottom: 10px;
        }

        .page-gift-code-guide__step-card p {
            color: #666666;
            font-size: 0.95em;
        }

        .page-gift-code-guide__step-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 15px;
            display: block;
        }

        .page-gift-code-guide__image-container {
            text-align: center;
            margin: 40px 0;
        }

        .page-gift-code-guide__image-container img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
        }

        .page-gift-code-guide__cta-banner {
            background-color: #64748b;
            color: #ffffff;
            text-align: center;
            padding: 50px 20px;
            border-radius: 12px;
            margin-top: 40px;
            margin-bottom: 40px;
        }

        .page-gift-code-guide__cta-banner h2 {
            color: #ffffff;
            font-size: 2.5em;
            margin-bottom: 20px;
        }

        .page-gift-code-guide__cta-banner p {
            font-size: 1.2em;
            margin-bottom: 30px;
            color: #f0f0f0;
        }

        .page-gift-code-guide__faq-section {
            background-color: #f0f8ff;
            padding: 60px 20px;
            max-width: 1200px;
            margin: 0 auto 40px;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
        }

        .page-gift-code-guide__faq-section h2 {
            color: #2563eb;
            text-align: center;
            margin-bottom: 40px;
        }

        .page-gift-code-guide__faq-item {
            background-color: #ffffff;
            border: 1px solid #e0e0e0;
            border-radius: 8px;
            margin-bottom: 15px;
            overflow: hidden;
            transition: box-shadow 0.3s ease;
        }

        .page-gift-code-guide__faq-item:hover {
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        }

        .page-gift-code-guide__faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 25px;
            font-size: 1.15em;
            font-weight: bold;
            color: #333333;
            cursor: pointer;
            user-select: none;
            background-color: #ffffff;
            transition: background-color 0.3s ease;
        }

        .page-gift-code-guide__faq-question:hover {
            background-color: #f5f5f5;
        }

        .page-gift-code-guide__faq-question h3 {
            margin: 0;
            font-size: 1.15em;
            color: #333333;
            pointer-events: none; /* Ngăn chặn h3 chặn sự kiện click */
        }

        .page-gift-code-guide__faq-toggle {
            font-size: 1.5em;
            font-weight: bold;
            color: #2563eb;
            pointer-events: none; /* Ngăn chặn dấu +/- chặn sự kiện click */
            transition: transform 0.3s ease;
        }

        .page-gift-code-guide__faq-item.active .page-gift-code-guide__faq-toggle {
            transform: rotate(45deg);
        }

        .page-gift-code-guide__faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 25px;
            opacity: 0;
            color: #555555;
            font-size: 1em;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
        }

        .page-gift-code-guide__faq-item.active .page-gift-code-guide__faq-answer {
            max-height: 2000px !important; /* Đủ lớn để chứa mọi nội dung */
            padding: 20px 25px !important;
            opacity: 1;
        }

        .page-gift-code-guide__related-links {
            max-width: 1200px;
            margin: 40px auto 60px;
            padding: 20px;
            background-color: #ffffff;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
        }

        .page-gift-code-guide__related-links h2 {
            color: #2563eb;
            text-align: center;
            margin-bottom: 30px;
        }

        .page-gift-code-guide__link-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
        }

        .page-gift-code-guide__link-card {
            display: block;
            background-color: #f0f8ff;
            padding: 20px;
            border-radius: 8px;
            text-align: center;
            text-decoration: none;
            color: #333333;
            font-weight: bold;
            transition: background-color 0.3s ease, transform 0.2s ease;
            border: 1px solid #e0e0e0;
        }

        .page-gift-code-guide__link-card:hover {
            background-color: #e6f2ff;
            transform: translateY(-3px);
            color: #2563eb;
        }

        .page-gift-code-guide__link-card span {
            display: block;
            margin-top: 10px;
            font-size: 1.1em;
        }

        /* Global image responsive */
        .page-gift-code-guide img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        /* Responsive Styles */
        @media (max-width: 1024px) {
            .page-gift-code-guide__hero-content {
                padding: 15px;
            }
            .page-gift-code-guide__hero-content h1 {
                font-size: clamp(1.8em, 5vw, 3em);
            }
            .page-gift-code-guide__section, .page-gift-code-guide__faq-section, .page-gift-code-guide__related-links {
                margin-left: 15px;
                margin-right: 15px;
                padding: 40px 15px;
            }
            .page-gift-code-guide__steps-grid {
                gap: 20px;
            }
            .page-gift-code-guide__cta-banner {
                padding: 40px 15px;
                margin-left: 15px;
                margin-right: 15px;
            }
            .page-gift-code-guide__cta-banner h2 {
                font-size: 2em;
            }
            .page-gift-code-guide__cta-banner p {
                font-size: 1em;
            }
        }

        @media (max-width: 768px) {
            .page-gift-code-guide__hero-section {
                padding-top: 10px !important;
                padding-bottom: 30px;
            }
            .page-gift-code-guide__hero-content h1 {
                font-size: clamp(1.6em, 7vw, 2.5em);
            }
            .page-gift-code-guide__hero-content p {
                font-size: 1em;
            }
            .page-gift-code-guide__cta-button {
                padding: 12px 25px;
                font-size: 1em;
                max-width: 100% !important;
                width: 100% !important;
                box-sizing: border-box !important;
                white-space: normal !important;
                word-wrap: break-word !important;
                padding-left: 15px !important;
                padding-right: 15px !important;
            }
            .page-gift-code-guide__section, .page-gift-code-guide__faq-section, .page-gift-code-guide__related-links {
                padding: 30px 15px;
                margin-bottom: 30px;
                border-radius: 8px;
                max-width: 100% !important;
                width: 100% !important;
                box-sizing: border-box !important;
            }
            .page-gift-code-guide__section h2 {
                font-size: 1.8em;
                margin-bottom: 30px;
            }
            .page-gift-code-guide__section h3 {
                font-size: 1.4em;
            }
            .page-gift-code-guide__list-item {
                padding: 12px 15px;
                font-size: 0.95em;
                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;
            }
            .page-gift-code-guide__steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .page-gift-code-guide__step-card {
                padding: 20px;
            }
            .page-gift-code-guide__step-icon {
                width: 60px;
                height: 60px;
            }
            .page-gift-code-guide__image-container {
                margin: 30px 0;
            }
            .page-gift-code-guide__image-container img {
                max-width: 100% !important;
                width: 100% !important;
                height: auto !important;
            }
            .page-gift-code-guide__cta-banner {
                padding: 30px 15px;
                border-radius: 8px;
                margin-top: 30px;
                margin-bottom: 30px;
                max-width: 100% !important;
                width: 100% !important;
                box-sizing: border-box !important;
            }
            .page-gift-code-guide__cta-banner h2 {
                font-size: 1.8em;
            }
            .page-gift-code-guide__cta-banner p {
                font-size: 0.95em;
            }
            .page-gift-code-guide__faq-question {
                padding: 15px 20px;
                font-size: 1em;
            }
            .page-gift-code-guide__faq-question h3 {
                font-size: 1em;
            }
            .page-gift-code-guide__faq-toggle {
                font-size: 1.3em;
            }
            .page-gift-code-guide__faq-answer {
                padding: 0 20px;
            }
            .page-gift-code-guide__faq-item.active .page-gift-code-guide__faq-answer {
                padding: 15px 20px !important;
            }
            .page-gift-code-guide__link-grid {
                grid-template-columns: 1fr;
            }
            .page-gift-code-guide__link-card {
                padding: 15px;
            }
            .page-gift-code-guide__link-card span {
                font-size: 1em;
            }
            .page-gift-code-guide img {
              max-width: 100% !important;
              width: 100% !important;
              height: auto !important;
            }
            .page-gift-code-guide__section, .page-gift-code-guide__card, .page-gift-code-guide__container {
              max-width: 100% !important;
              width: 100% !important;
              box-sizing: border-box !important;
              padding-left: 15px;
              padding-right: 15px;
            }
            .page-gift-code-guide__cta-button, .page-gift-code-guide__btn-primary, .page-gift-code-guide__btn-secondary, .page-gift-code-guide a[class*="button"], .page-gift-code-guide a[class*="btn"] {
              max-width: 100% !important;
              width: 100% !important;
              box-sizing: border-box !important;
              white-space: normal !important;
              word-wrap: break-word !important;
              padding-left: 15px;
              padding-right: 15px;
            }
            .page-gift-code-guide__cta-buttons, .page-gift-code-guide__button-group, .page-gift-code-guide__btn-container {
              max-width: 100% !important;
              width: 100% !important;
              box-sizing: border-box !important;
              padding-left: 15px;
              padding-right: 15px;
              flex-wrap: wrap !important;
              gap: 10px;
            }
            .page-gift-code-guide__cta-buttons {
              display: flex;
              flex-direction: column; /* Mobile vertical stacking */
            }
        }