:root {
    --page-khuyen-mai-primary: #2F6BFF;
    --page-khuyen-mai-secondary: #6FA3FF;
    --page-khuyen-mai-card-bg: #FFFFFF;
    --page-khuyen-mai-background: #F4F7FB;
    --page-khuyen-mai-text-main: #1F2D3D;
    --page-khuyen-mai-text-black: #000000;
    --page-khuyen-mai-border: #D6E2FF;
    --page-khuyen-mai-glow: #A5C4FF;
    --page-khuyen-mai-button-gradient: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
}

.page-khuyen-mai {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--page-khuyen-mai-text-main);
    background-color: var(--page-khuyen-mai-background);
}

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

.page-khuyen-mai__hero-section {
    padding-top: 10px;
    position: relative;
    overflow: hidden;
    color: #ffffff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 500px;
}

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

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

.page-khuyen-mai__hero-content {
    background: var(--page-khuyen-mai-primary);
    width: 100%;
    padding: 40px 20px;
    box-sizing: border-box;
    position: relative;
    z-index: 1;
    color: #ffffff;
}

.page-khuyen-mai__main-title {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 15px;
    line-height: 1.2;
    color: #ffffff;
}

.page-khuyen-mai__intro-text {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 30px auto;
    color: #f0f0f0;
}

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

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary,
.page-khuyen-mai__btn-ghost,
.page-khuyen-mai__btn-text {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    white-space: normal;
    word-wrap: break-word;
    box-sizing: border-box;
    max-width: 100%;
}

.page-khuyen-mai__btn-primary {
    background: var(--page-khuyen-mai-button-gradient);
    color: #ffffff;
    border: 2px solid var(--page-khuyen-mai-primary);
}

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

.page-khuyen-mai__btn-secondary {
    background: #ffffff;
    color: var(--page-khuyen-mai-primary);
    border: 2px solid var(--page-khuyen-mai-primary);
}

.page-khuyen-mai__btn-secondary:hover {
    background: var(--page-khuyen-mai-primary);
    color: #ffffff;
}

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

.page-khuyen-mai__btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
}

.page-khuyen-mai__btn-text {
    background: transparent;
    color: var(--page-khuyen-mai-primary);
    border: none;
    padding: 0;
    font-weight: 600;
    text-decoration: underline;
}

.page-khuyen-mai__btn-text:hover {
    color: var(--page-khuyen-mai-secondary);
}

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

.page-khuyen-mai__section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--page-khuyen-mai-text-main);
}

.page-khuyen-mai__section-title--white {
    color: #ffffff;
}

.page-khuyen-mai__section-description {
    font-size: 1.1rem;
    max-width: 900px;
    margin: 0 auto 40px auto;
    color: var(--page-khuyen-mai-text-main);
}

.page-khuyen-mai__section-description--white {
    color: #f0f0f0;
}

.page-khuyen-mai__dark-bg {
    background-color: var(--page-khuyen-mai-primary);
    color: #ffffff;
}

.page-khuyen-mai__light-bg {
    background-color: var(--page-khuyen-mai-background);
    color: var(--page-khuyen-mai-text-main);
}

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

.page-khuyen-mai__promotion-card,
.page-khuyen-mai__info-card,
.page-khuyen-mai__feature-card,
.page-khuyen-mai__step-card {
    background: var(--page-khuyen-mai-card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    text-align: left;
    display: flex;
    flex-direction: column;
    height: 100%;
    box-sizing: border-box;
}

.page-khuyen-mai__promotion-card .page-khuyen-mai__card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
}

.page-khuyen-mai__card-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.page-khuyen-mai__card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--page-khuyen-mai-text-main);
}

.page-khuyen-mai__card-title--white {
    color: #ffffff;
}

.page-khuyen-mai__card-text {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--page-khuyen-mai-text-main);
    margin-bottom: 20px;
}

.page-khuyen-mai__card-text--white {
    color: #f0f0f0;
}

.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-card {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    text-align: center;
    padding: 30px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.page-khuyen-mai__step-icon {
    background: #ffffff;
    color: var(--page-khuyen-mai-primary);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

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

.page-khuyen-mai__info-card {
    padding: 25px;
    border: 1px solid var(--page-khuyen-mai-border);
    background-color: var(--page-khuyen-mai-card-bg);
}

.page-khuyen-mai__read-more-text {
    margin-top: 40px;
    font-size: 1rem;
    color: var(--page-khuyen-mai-text-main);
}

.page-khuyen-mai__link {
    color: var(--page-khuyen-mai-primary);
    text-decoration: none;
    font-weight: 600;
}

.page-khuyen-mai__link:hover {
    text-decoration: underline;
}

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

.page-khuyen-mai__feature-card {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    padding: 30px;
    text-align: left;
}

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

.page-khuyen-mai__faq-item {
    background: var(--page-khuyen-mai-card-bg);
    border-radius: 8px;
    margin-bottom: 15px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--page-khuyen-mai-border);
}

.page-khuyen-mai__faq-item summary {
    list-style: none;
}

.page-khuyen-mai__faq-item summary::-webkit-details-marker {
    display: none;
}

.page-khuyen-mai__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--page-khuyen-mai-text-main);
    cursor: pointer;
    border-bottom: 1px solid var(--page-khuyen-mai-border);
}

.page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-question {
    border-bottom: none;
}

.page-khuyen-mai__faq-toggle {
    font-size: 1.8rem;
    line-height: 1;
    margin-left: 15px;
    color: var(--page-khuyen-mai-primary);
}

.page-khuyen-mai__faq-answer {
    padding: 0 25px 20px 25px;
    font-size: 1rem;
    color: var(--page-khuyen-mai-text-main);
    line-height: 1.7;
}

.page-khuyen-mai__faq-answer p {
    margin: 0;
}

.page-khuyen-mai__cta-section {
    padding: 80px 0;
}

.page-khuyen-mai__cta-container {
    display: flex;
    align-items: center;
    gap: 50px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    text-align: left;
}

.page-khuyen-mai__cta-image {
    width: 50%;
    height: auto;
    object-fit: cover;
    border-radius: 8px;
    display: block;
}

.page-khuyen-mai__cta-content {
    width: 50%;
    color: #ffffff;
}

.page-khuyen-mai__cta-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.3;
}

.page-khuyen-mai__cta-title--white {
    color: #ffffff;
}

.page-khuyen-mai__cta-description {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: #f0f0f0;
}

.page-khuyen-mai__conclusion-section {
    padding-bottom: 80px;
}

.page-khuyen-mai img {
    max-width: 100%;
    height: auto;
    display: block;
}

.page-khuyen-mai__dark-bg .page-khuyen-mai__section-description,
.page-khuyen-mai__dark-bg .page-khuyen-mai__card-text {
    color: #f0f0f0;
}

.page-khuyen-mai__light-bg .page-khuyen-mai__section-description,
.page-khuyen-mai__light-bg .page-khuyen-mai__card-text {
    color: var(--page-khuyen-mai-text-main);
}

.page-khuyen-mai__promotion-card img,
.page-khuyen-mai__info-card img,
.page-khuyen-mai__feature-card img,
.page-khuyen-mai__step-card img,
.page-khuyen-mai__cta-image {
    width: 100%;
    height: auto;
    min-width: 200px;
    min-height: 200px;
    object-fit: cover;
}

@media (max-width: 1024px) {
    .page-khuyen-mai__container {
        padding: 20px 30px;
    }

    .page-khuyen-mai__main-title {
        font-size: clamp(2rem, 5vw, 3rem);
    }

    .page-khuyen-mai__section-title {
        font-size: 2rem;
    }

    .page-khuyen-mai__cta-container {
        flex-direction: column;
        text-align: center;
        padding: 30px;
    }

    .page-khuyen-mai__cta-image,
    .page-khuyen-mai__cta-content {
        width: 100%;
    }

    .page-khuyen-mai__cta-buttons {
        flex-direction: row;
    }
}

@media (max-width: 768px) {
    .page-khuyen-mai__hero-section {
        padding-top: 10px !important;
        min-height: auto;
    }

    .page-khuyen-mai__hero-image-wrapper {
        max-height: 300px;
    }

    .page-khuyen-mai__hero-content {
        padding: 30px 15px;
    }

    .page-khuyen-mai__main-title {
        font-size: clamp(1.8rem, 8vw, 2.5rem);
        margin-bottom: 10px;
    }

    .page-khuyen-mai__intro-text {
        font-size: 1rem;
        margin-bottom: 20px;
    }
}