.page-khuyen-mai {
    font-family: Arial, sans-serif;
    color: #333333;
    background-color: #F5F7FA;
    line-height: 1.6;
}

.page-khuyen-mai__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.page-khuyen-mai__hero-section {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 10px; /* Small top padding, relies on body for header offset */
    padding-bottom: 50px;
    overflow: hidden;
    background-color: #F5F7FA;
}

.page-khuyen-mai__hero-image {
    width: 100%;
    height: 500px;
    overflow: hidden;
    margin-bottom: 30px;
}

.page-khuyen-mai__hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.page-khuyen-mai__hero-content {
    position: relative; /* Ensure content is above image if any overlap */
    z-index: 2;
    max-width: 900px;
    padding: 0 20px;
}

.page-khuyen-mai__main-title {
    font-size: clamp(2.5em, 5vw, 3.5em);
    color: #E53935;
    margin-bottom: 20px;
    font-weight: 700;
    line-height: 1.2;
}

.page-khuyen-mai__description {
    font-size: 1.2em;
    margin-bottom: 30px;
    color: #333333;
}

.page-khuyen-mai__cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: all 0.3s ease;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
    max-width: 100%;
    box-sizing: border-box;
}

.page-khuyen-mai__btn-primary {
    background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%);
    color: #ffffff;
    border: none;
}

.page-khuyen-mai__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.page-khuyen-mai__btn-secondary {
    background: #ffffff;
    color: #E53935;
    border: 2px solid #E53935;
}

.page-khuyen-mai__btn-secondary:hover {
    background: #E53935;
    color: #ffffff;
}

.page-khuyen-mai__section {
    padding: 60px 0;
    background-color: #F5F7FA;
}

.page-khuyen-mai__section:nth-of-type(even) {
    background-color: #ffffff;
}

.page-khuyen-mai__section-title {
    font-size: 2.5em;
    color: #E53935;
    text-align: center;
    margin-bottom: 40px;
    font-weight: 700;
}

.page-khuyen-mai__text-block {
    font-size: 1.1em;
    line-height: 1.8;
    margin-bottom: 25px;
    text-align: justify;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.page-khuyen-mai__feature-image,
.page-khuyen-mai__advantage-image {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 40px auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

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

.page-khuyen-mai__card {
    background: #FFFFFF;
    border: 1px solid #E0E0E0;
    border-radius: 10px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
}

.page-khuyen-mai__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.page-khuyen-mai__card-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 20px;
    display: block;
}

.page-khuyen-mai__card-title {
    font-size: 1.5em;
    color: #E53935;
    margin-bottom: 15px;
    font-weight: 600;
}

.page-khuyen-mai__card-description {
    font-size: 1em;
    color: #333333;
    line-height: 1.7;
    margin-bottom: 20px;
    flex-grow: 1;
}

.page-khuyen-mai__card-button {
    display: inline-block;
    padding: 12px 25px;
    background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%);
    color: #ffffff;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    font-size: 0.95em;
    transition: opacity 0.3s ease;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
}

.page-khuyen-mai__card-button:hover {
    opacity: 0.9;
}

.page-khuyen-mai__card-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

.page-khuyen-mai__guide-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
    text-align: center;
}

.page-khuyen-mai__step-item {
    background: #FFFFFF;
    border: 1px solid #E0E0E0;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.page-khuyen-mai__step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #E53935;
    color: #ffffff;
    font-size: 2em;
    font-weight: bold;
    margin-bottom: 20px;
}

.page-khuyen-mai__step-title {
    font-size: 1.5em;
    color: #E53935;
    margin-bottom: 15px;
    font-weight: 600;
}

.page-khuyen-mai__step-description {
    font-size: 1em;
    color: #333333;
    line-height: 1.7;
}

.page-khuyen-mai__step-description a {
    color: #E53935;
    text-decoration: none;
    font-weight: bold;
}

.page-khuyen-mai__step-description a:hover {
    text-decoration: underline;
}

.page-khuyen-mai__dark-section {
    background: linear-gradient(180deg, #E53935 0%, #FF5A4F 100%);
    color: #ffffff;
}

.page-khuyen-mai__dark-section .page-khuyen-mai__section-title,
.page-khuyen-mai__dark-section .page-khuyen-mai__text-block,
.page-khuyen-mai__dark-section .page-khuyen-mai__list-item {
    color: #ffffff;
}

.page-khuyen-mai__advantage-list {
    list-style: none;
    padding: 0;
    max-width: 800px;
    margin: 0 auto 40px auto;
}

.page-khuyen-mai__list-item {
    font-size: 1.1em;
    margin-bottom: 15px;
    padding-left: 30px;
    position: relative;
    color: #ffffff;
}

.page-khuyen-mai__list-item::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #ffffff;
    font-weight: bold;
}

/* FAQ Styles */
details.page-khuyen-mai__faq-item {
    margin-bottom: 15px;
    border-radius: 5px;
    border: 1px solid #e0e0e0;
    overflow: hidden;
    background: #fff;
}
details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 20px;
    cursor: pointer;
    user-select: none;
    list-style: none;
    transition: background-color 0.3s ease;
}
details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question::-webkit-details-marker {
    display: none;
}
details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question:hover {
    background: #f5f5f5;
}
.page-khuyen-mai__faq-qtext {
    flex: 1;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    text-align: left;
    color: #333333;
}
.page-khuyen-mai__faq-toggle {
    font-size: 24px;
    font-weight: bold;
    color: #666;
    flex-shrink: 0;
    margin-left: 15px;
    width: 28px;
    text-align: center;
}
details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer {
    padding: 0 20px 20px;
    background: #f9f9f9;
    border-radius: 0 0 5px 5px;
    color: #333333;
}

.page-khuyen-mai__cta-final {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%);
    color: #ffffff;
}

.page-khuyen-mai__cta-final .page-khuyen-mai__section-title,
.page-khuyen-mai__cta-final .page-khuyen-mai__text-block {
    color: #ffffff;
}

.page-khuyen-mai__cta-final .page-khuyen-mai__btn-primary {
    background: #ffffff;
    color: #E53935;
    border: none;
}

.page-khuyen-mai__cta-final .page-khuyen-mai__btn-primary:hover {
    background: #f0f0f0;
    color: #E53935;
}

/* Responsive styles */
@media (max-width: 1024px) {
    .page-khuyen-mai__hero-image {
        height: 400px;
    }
    .page-khuyen-mai__main-title {
        font-size: clamp(2em, 4vw, 3em);
    }
    .page-khuyen-mai__section-title {
        font-size: 2em;
    }
    .page-khuyen-mai__container {
        padding: 20px 30px;
    }
}

@media (max-width: 768px) {
    .page-khuyen-mai {
        font-size: 16px;
        line-height: 1.6;
    }
    .page-khuyen-mai__container {
        padding-left: 15px !important;
        padding-right: 15px !important;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    .page-khuyen-mai__hero-section {
        padding-bottom: 30px;
        padding-top: 10px; /* Consistent small top padding */
    }
    .page-khuyen-mai__hero-image {
        height: 300px;
        margin-bottom: 20px;
    }
    .page-khuyen-mai__hero-image img {
        object-fit: contain !important; /* Mobile: prevent cropping */
        aspect-ratio: unset !important;
        width: 100% !important;
        height: auto !important;
    }
    .page-khuyen-mai__main-title {
        font-size: clamp(1.8em, 8vw, 2.5em);
        margin-bottom: 15px;
    }
    .page-khuyen-mai__description {
        font-size: 1em;
        margin-bottom: 20px;
    }
    .page-khuyen-mai__cta-buttons {
        flex-direction: column;
        gap: 10px;
        padding-left: 15px;
        padding-right: 15px;
    }
    .page-khuyen-mai__btn-primary,
    .page-khuyen-mai__btn-secondary {
        padding: 12px 20px;
        font-size: 1em;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
    }

    .page-khuyen-mai__section {
        padding: 40px 0;
    }
    .page-khuyen-mai__section-title {
        font-size: 1.8em;
        margin-bottom: 30px;
    }
    .page-khuyen-mai__text-block {
        font-size: 0.95em;
        margin-bottom: 20px;
        text-align: left;
    }

    .page-khuyen-mai__feature-image,
    .page-khuyen-mai__advantage-image,
    .page-khuyen-mai img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    .page-khuyen-mai__promotion-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .page-khuyen-mai__card {
        padding: 20px;
    }
    .page-khuyen-mai__card-title {
        font-size: 1.3em;
    }
    .page-khuyen-mai__card-description {
        font-size: 0.9em;
    }
    .page-khuyen-mai__card-button {
        padding: 10px 15px;
        font-size: 0.9em;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
    }
    .page-khuyen-mai__card-buttons {
        flex-direction: column;
        gap: 8px;
        padding-left: 0;
        padding-right: 0;
    }

    .page-khuyen-mai__guide-steps {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .page-khuyen-mai__step-item {
        padding: 25px;
    }
    .page-khuyen-mai__step-number {
        width: 50px;
        height: 50px;
        font-size: 1.8em;
    }
    .page-khuyen-mai__step-title {
        font-size: 1.3em;
    }

    .page-khuyen-mai__list-item {
        font-size: 1em;
        padding-left: 25px;
    }

    details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question { padding: 15px; }
    .page-khuyen-mai__faq-qtext { font-size: 15px; }
    details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer {
        padding: 0 15px 15px;
    }

    .page-khuyen-mai__cta-final {
        padding: 60px 0;
    }
}