.page-khuyen-mai {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333333; /* Default text color for light background */
    background-color: #FFFFFF; /* Default body background is white */
}

.page-khuyen-mai__hero-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 10px 0 40px;
    position: relative;
    overflow: hidden;
    background-color: #f8f8f8;
}

.page-khuyen-mai__hero-image {
    width: 100%;
    max-height: 500px;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
}

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

.page-khuyen-mai__hero-content {
    max-width: 900px;
    padding: 0 20px;
    z-index: 1;
}

.page-khuyen-mai__main-title {
    font-size: clamp(28px, 4vw, 48px);
    color: #26A9E0;
    margin-bottom: 15px;
    font-weight: 700;
    line-height: 1.2;
}

.page-khuyen-mai__hero-description {
    font-size: clamp(16px, 1.8vw, 20px);
    margin-bottom: 30px;
    color: #555;
}

.page-khuyen-mai__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 18px;
    transition: all 0.3s ease;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
}

.page-khuyen-mai__btn-primary {
    background-color: #26A9E0;
    color: #FFFFFF;
    border: 2px solid #26A9E0;
}

.page-khuyen-mai__btn-primary:hover {
    background-color: #1e87c0;
    border-color: #1e87c0;
    transform: translateY(-2px);
}

.page-khuyen-mai__btn-secondary {
    background-color: #FFFFFF;
    color: #26A9E0;
    border: 2px solid #26A9E0;
}

.page-khuyen-mai__btn-secondary:hover {
    background-color: #26A9E0;
    color: #FFFFFF;
    transform: translateY(-2px);
}

.page-khuyen-mai__section {
    padding: 60px 0;
    text-align: center;
}

.page-khuyen-mai__section-types {
    background-color: #fdfdfd;
}

.page-khuyen-mai__dark-section {
    background-color: #26A9E0;
    color: #FFFFFF;
}

.page-khuyen-mai__dark-section .page-khuyen-mai__section-title {
    color: #FFFFFF;
}

.page-khuyen-mai__dark-section .page-khuyen-mai__section-intro {
    color: #f0f0f0;
}

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

.page-khuyen-mai__section-title {
    font-size: clamp(24px, 3.5vw, 40px);
    color: #26A9E0;
    margin-bottom: 20px;
    font-weight: 700;
}

.page-khuyen-mai__section-intro {
    font-size: 18px;
    color: #555;
    max-width: 900px;
    margin: 0 auto 40px;
}

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

.page-khuyen-mai__promo-card {
    background-color: #FFFFFF;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    padding: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e0e0e0;
    height: 100%;
    box-sizing: border-box;
}

.page-khuyen-mai__promo-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.page-khuyen-mai__card-icon {
    width: 100px;
    height: 100px;
    margin-bottom: 20px;
}

.page-khuyen-mai__card-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.page-khuyen-mai__card-title {
    font-size: 22px;
    color: #26A9E0;
    margin-bottom: 15px;
    font-weight: 600;
}

.page-khuyen-mai__card-description {
    font-size: 16px;
    color: #666;
    margin-bottom: 25px;
    flex-grow: 1;
}

.page-khuyen-mai__card-link {
    color: #EA7C07;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    position: relative;
    padding-bottom: 3px;
}

.page-khuyen-mai__card-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background-color: #EA7C07;
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform 0.3s ease;
}

.page-khuyen-mai__card-link:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

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

.page-khuyen-mai__term-item {
    background-color: rgba(255, 255, 255, 0.15);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.page-khuyen-mai__term-title {
    font-size: 22px;
    color: #FFFFFF;
    margin-bottom: 15px;
    font-weight: 600;
}

.page-khuyen-mai__term-description {
    font-size: 16px;
    color: #f0f0f0;
}

.page-khuyen-mai__button-group {
    margin-top: 50px;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.page-khuyen-mai__button-group .page-khuyen-mai__btn-primary {
    background-color: #FFFFFF;
    color: #26A9E0;
    border-color: #FFFFFF;
}

.page-khuyen-mai__button-group .page-khuyen-mai__btn-primary:hover {
    background-color: #e0e0e0;
    border-color: #e0e0e0;
}

.page-khuyen-mai__button-group .page-khuyen-mai__btn-secondary {
    background-color: transparent;
    color: #FFFFFF;
    border-color: #FFFFFF;
}

.page-khuyen-mai__button-group .page-khuyen-mai__btn-secondary:hover {
    background-color: #FFFFFF;
    color: #26A9E0;
}

.page-khuyen-mai__steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-khuyen-mai__step-item {
    background-color: #FFFFFF;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    padding: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    border: 1px solid #e0e0e0;
    height: 100%;
    box-sizing: border-box;
}

.page-khuyen-mai__step-number {
    background-color: #26A9E0;
    color: #FFFFFF;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    font-weight: 700;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(38, 169, 224, 0.4);
}

.page-khuyen-mai__step-title {
    font-size: 22px;
    color: #26A9E0;
    margin-bottom: 15px;
    font-weight: 600;
}

.page-khuyen-mai__step-description {
    font-size: 16px;
    color: #666;
}

.page-khuyen-mai__cta-buttons--centered {
    margin-top: 50px;
}

.page-khuyen-mai__faq-section {
    background-color: #f8f8f8;
}

.page-khuyen-mai__faq-list {
    max-width: 900px;
    margin: 40px auto 0;
    text-align: left;
}

details.page-khuyen-mai__faq-item {
  margin-bottom: 15px;
  border-radius: 10px;
  border: 1px solid #e0e0e0;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  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: 18px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: #333333;
}
.page-khuyen-mai__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  color: #26A9E0;
  flex-shrink: 0;
  margin-left: 15px;
  width: 30px;
  text-align: center;
}
details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer {
  padding: 0 25px 20px;
  background: #f9f9f9;
  border-radius: 0 0 10px 10px;
  color: #555;
  font-size: 16px;
  line-height: 1.7;
}

.page-khuyen-mai__conclusion .page-khuyen-mai__text-contrast-fix {
    color: #FFFFFF;
}

/* --- Responsive Styles --- */

@media (max-width: 1024px) {
    .page-khuyen-mai__hero-content {
        padding: 0 15px;
    }
    .page-khuyen-mai__section-intro {
        font-size: 17px;
    }
    .page-khuyen-mai__grid-container,
    .page-khuyen-mai__terms-grid,
    .page-khuyen-mai__steps-grid {
        gap: 25px;
    }
    .page-khuyen-mai__promo-card, .page-khuyen-mai__term-item, .page-khuyen-mai__step-item {
        padding: 25px;
    }
    .page-khuyen-mai__card-title, .page-khuyen-mai__term-title, .page-khuyen-mai__step-title {
        font-size: 20px;
    }
    .page-khuyen-mai__card-description, .page-khuyen-mai__term-description, .page-khuyen-mai__step-description {
        font-size: 15px;
    }
    details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question {
        padding: 16px 20px;
    }
    .page-khuyen-mai__faq-qtext {
        font-size: 17px;
    }
    .page-khuyen-mai__faq-toggle {
        font-size: 26px;
    }
    details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer {
        padding: 0 20px 18px;
    }
}

@media (max-width: 768px) {
    .page-khuyen-mai__hero-section {
        padding: 10px 0 30px;
    }
    .page-khuyen-mai__hero-image {
        max-height: 300px;
        margin-bottom: 15px;
    }
    .page-khuyen-mai__hero-image img {
        object-fit: contain !important; /* Ensure image is not cropped */
        aspect-ratio: unset !important; /* Allow natural aspect ratio */
    }
    .page-khuyen-mai__main-title {
        font-size: clamp(24px, 7vw, 36px);
        margin-bottom: 10px;
    }
    .page-khuyen-mai__hero-description {
        font-size: clamp(15px, 4vw, 18px);
        margin-bottom: 25px;
    }
    .page-khuyen-mai__cta-buttons {
        flex-direction: column;
        gap: 15px;
        width: 100%;
        padding: 0 15px;
        box-sizing: border-box;
    }
    .page-khuyen-mai__btn-primary,
    .page-khuyen-mai__btn-secondary {
        font-size: 16px;
        padding: 12px 20px;
        width: 100% !important;
        max-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__container {
        padding: 0 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-khuyen-mai__section-title {
        font-size: clamp(22px, 6vw, 32px);
        margin-bottom: 15px;
    }
    .page-khuyen-mai__section-intro {
        font-size: 16px;
        margin-bottom: 30px;
    }
    .page-khuyen-mai__grid-container,
    .page-khuyen-mai__terms-grid,
    .page-khuyen-mai__steps-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .page-khuyen-mai__promo-card, .page-khuyen-mai__term-item, .page-khuyen-mai__step-item {
        padding: 20px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-khuyen-mai__card-icon {
        width: 80px;
        height: 80px;
        margin-bottom: 15px;
    }
    .page-khuyen-mai__card-title, .page-khuyen-mai__term-title, .page-khuyen-mai__step-title {
        font-size: 18px;
        margin-bottom: 10px;
    }
    .page-khuyen-mai__card-description, .page-khuyen-mai__term-description, .page-khuyen-mai__step-description {
        font-size: 14px;
        margin-bottom: 20px;
    }
    .page-khuyen-mai__button-group {
        flex-direction: column;
        gap: 15px;
        margin-top: 40px;
        width: 100%;
        padding: 0 15px;
        box-sizing: border-box;
    }
    .page-khuyen-mai__button-group .page-khuyen-mai__btn-primary,
    .page-khuyen-mai__button-group .page-khuyen-mai__btn-secondary {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }
    .page-khuyen-mai__step-number {
        width: 50px;
        height: 50px;
        font-size: 24px;
        margin-bottom: 15px;
    }
    .page-khuyen-mai__faq-list {
        margin-top: 30px;
        padding: 0 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question {
        padding: 15px;
    }
    .page-khuyen-mai__faq-qtext {
        font-size: 16px;
    }
    .page-khuyen-mai__faq-toggle {
        font-size: 24px;
        width: 25px;
    }
    details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer {
        padding: 0 15px 15px;
        font-size: 14px;
    }
    .page-khuyen-mai__cta-buttons--centered {
        margin-top: 40px;
        width: 100%;
        padding: 0 15px;
        box-sizing: border-box;
    }
    .page-khuyen-mai__cta-buttons--centered a {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }
    .page-khuyen-mai img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }
    .page-khuyen-mai__section,
    .page-khuyen-mai__card,
    .page-khuyen-mai__container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }
}