:root {
    /* Custom Colors */
    --page-khuyen-mai-dieu-khoan-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
    --page-khuyen-mai-dieu-khoan-card-bg: #11271B;
    --page-khuyen-mai-dieu-khoan-background: #08160F;
    --page-khuyen-mai-dieu-khoan-text-main: #F2FFF6;
    --page-khuyen-mai-dieu-khoan-text-secondary: #A7D9B8;
    --page-khuyen-mai-dieu-khoan-border: #2E7A4E;
    --page-khuyen-mai-dieu-khoan-glow: #57E38D;
    --page-khuyen-mai-dieu-khoan-gold: #F2C14E;
    --page-khuyen-mai-dieu-khoan-divider: #1E3A2A;
    --page-khuyen-mai-dieu-khoan-deep-green: #0A4B2C;

    /* Brand Colors (from prompt, for reference, actual usage from custom colors) */
    --brand-primary: #11A84E;
    --brand-secondary: #22C768;
}

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

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

.page-khuyen-mai-dieu-khoan__section {
    padding: 60px 0;
    position: relative;
    overflow: hidden; /* Prevent content overflow issues */
}

.page-khuyen-mai-dieu-khoan__hero-section {
    padding-top: 10px; /* Small top padding, assuming body handles header offset */
    position: relative;
    text-align: center;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 500px; /* Ensure hero section has some height */
    background-color: var(--page-khuyen-mai-dieu-khoan-background);
}

.page-khuyen-mai-dieu-khoan__hero-image {
    width: 100%;
    max-height: 500px; /* Limit height to prevent image from being too large */
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.page-khuyen-mai-dieu-khoan__hero-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover; /* Cover the area, but mobile will be contain */
    filter: brightness(0.7); /* Slightly dim the image for text contrast */
}

.page-khuyen-mai-dieu-khoan__hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    max-width: 900px;
    width: 100%;
    padding: 20px;
    box-sizing: border-box;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.page-khuyen-mai-dieu-khoan__main-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem); /* Use clamp for H1 */
    color: var(--page-khuyen-mai-dieu-khoan-text-main);
    margin-bottom: 15px;
    font-weight: 700;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.page-khuyen-mai-dieu-khoan__intro-text {
    font-size: 1.2rem;
    color: var(--page-khuyen-mai-dieu-khoan-text-secondary);
    margin-bottom: 30px;
    max-width: 800px;
}

.page-khuyen-mai-dieu-khoan__cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 20px;
    width: 100%; /* For mobile button wrap */
    max-width: 600px; /* Limit button group width */
    box-sizing: border-box;
}

.page-khuyen-mai-dieu-khoan__cta-buttons--centered {
    margin-top: 40px;
}

.page-khuyen-mai-dieu-khoan__btn-primary,
.page-khuyen-mai-dieu-khoan__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    white-space: normal; /* Allow text wrap */
    word-wrap: break-word; /* Allow text wrap */
    max-width: 100%; /* Ensure buttons don't overflow */
    box-sizing: border-box;
    min-height: 50px; /* Ensure button has minimum height */
}

.page-khuyen-mai-dieu-khoan__btn-primary {
    background: var(--page-khuyen-mai-dieu-khoan-button-gradient);
    color: var(--page-khuyen-mai-dieu-khoan-text-main);
    border: none;
}

.page-khuyen-mai-dieu-khoan__btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai-dieu-khoan__btn-secondary {
    background-color: transparent;
    color: var(--page-khuyen-mai-dieu-khoan-text-main);
    border: 2px solid var(--page-khuyen-mai-dieu-khoan-border);
}

.page-khuyen-mai-dieu-khoan__btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai-dieu-khoan__section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    color: var(--page-khuyen-mai-dieu-khoan-text-main);
    text-align: center;
    margin-bottom: 40px;
    font-weight: 700;
    position: relative;
    padding-bottom: 15px;
}

.page-khuyen-mai-dieu-khoan__section-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--page-khuyen-mai-dieu-khoan-glow);
    border-radius: 2px;
}

.page-khuyen-mai-dieu-khoan__article-body {
    max-width: 900px;
    margin: 0 auto;
    font-size: 1.1rem;
    color: var(--page-khuyen-mai-dieu-khoan-text-secondary);
}

.page-khuyen-mai-dieu-khoan__article-body p {
    margin-bottom: 20px;
}

.page-khuyen-mai-dieu-khoan__article-body ul,
.page-khuyen-mai-dieu-khoan__article-body ol {
    margin-bottom: 20px;
    padding-left: 25px;
}

.page-khuyen-mai-dieu-khoan__article-body li {
    margin-bottom: 10px;
    color: var(--page-khuyen-mai-dieu-khoan-text-secondary);
}

.page-khuyen-mai-dieu-khoan__article-body strong {
    color: var(--page-khuyen-mai-dieu-khoan-text-main);
}

.page-khuyen-mai-dieu-khoan__article-figure {
    width: 100%;
    height: auto;
    display: block;
    margin: 30px auto;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

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

.page-khuyen-mai-dieu-khoan__card {
    background-color: var(--page-khuyen-mai-dieu-khoan-card-bg);
    border: 1px solid var(--page-khuyen-mai-dieu-khoan-border);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    text-align: left;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 280px; /* Ensure cards have consistent height */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-khuyen-mai-dieu-khoan__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai-dieu-khoan__card-title {
    font-size: 1.5rem;
    color: var(--page-khuyen-mai-dieu-khoan-text-main);
    margin-bottom: 15px;
    font-weight: 600;
}

.page-khuyen-mai-dieu-khoan__card p {
    font-size: 1rem;
    color: var(--page-khuyen-mai-dieu-khoan-text-secondary);
    margin-bottom: 20px;
    flex-grow: 1;
}

.page-khuyen-mai-dieu-khoan__btn-text {
    color: var(--page-khuyen-mai-dieu-khoan-glow);
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    padding-bottom: 3px;
    border-bottom: 2px solid var(--page-khuyen-mai-dieu-khoan-glow);
    transition: color 0.3s ease, border-color 0.3s ease;
}

.page-khuyen-mai-dieu-khoan__btn-text:hover {
    color: var(--page-khuyen-mai-dieu-khoan-gold);
    border-color: var(--page-khuyen-mai-dieu-khoan-gold);
}

.page-khuyen-mai-dieu-khoan__grid-two-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
    margin-top: 40px;
}

.page-khuyen-mai-dieu-khoan__text-block {
    color: var(--page-khuyen-mai-dieu-khoan-text-secondary);
}

.page-khuyen-mai-dieu-khoan__sub-title {
    font-size: 1.8rem;
    color: var(--page-khuyen-mai-dieu-khoan-text-main);
    margin-top: 30px;
    margin-bottom: 15px;
    font-weight: 600;
}

.page-khuyen-mai-dieu-khoan__image-block {
    display: flex;
    justify-content: center;
    align-items: center;
}

.page-khuyen-mai-dieu-khoan__deep-green-bg {
    background-color: var(--page-khuyen-mai-dieu-khoan-deep-green);
}

.page-khuyen-mai-dieu-khoan__process-list {
    list-style: none;
    padding: 0;
    counter-reset: process-step;
}

.page-khuyen-mai-dieu-khoan__process-list li {
    position: relative;
    padding-left: 70px;
    margin-bottom: 40px;
    border-left: 2px solid var(--page-khuyen-mai-dieu-khoan-divider);
    padding-bottom: 20px;
}

.page-khuyen-mai-dieu-khoan__process-list li:last-child {
    border-left: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.page-khuyen-mai-dieu-khoan__process-list li::before {
    counter-increment: process-step;
    content: counter(process-step);
    position: absolute;
    left: -20px;
    top: 0;
    width: 40px;
    height: 40px;
    background: var(--page-khuyen-mai-dieu-khoan-glow);
    color: #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai-dieu-khoan__list-title {
    font-size: 1.6rem;
    color: var(--page-khuyen-mai-dieu-khoan-text-main);
    margin-bottom: 10px;
    font-weight: 600;
}

.page-khuyen-mai-dieu-khoan__list-title + p {
    color: var(--page-khuyen-mai-dieu-khoan-text-secondary);
}

.page-khuyen-mai-dieu-khoan__bullet-list {
    list-style: none;
    padding: 0;
}

.page-khuyen-mai-dieu-khoan__bullet-list li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 15px;
    color: var(--page-khuyen-mai-dieu-khoan-text-secondary);
}

.page-khuyen-mai-dieu-khoan__bullet-list li::before {
    content: '•'; /* Unicode bullet point */
    color: var(--page-khuyen-mai-dieu-khoan-glow);
    font-size: 1.5rem;
    position: absolute;
    left: 0;
    top: -5px;
}

.page-khuyen-mai-dieu-khoan__faq-section {
    background-color: var(--page-khuyen-mai-dieu-khoan-card-bg);
}

details.page-khuyen-mai-dieu-khoan__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  border: 1px solid var(--page-khuyen-mai-dieu-khoan-border);
  overflow: hidden;
  background: var(--page-khuyen-mai-dieu-khoan-card-bg);
}
details.page-khuyen-mai-dieu-khoan__faq-item summary.page-khuyen-mai-dieu-khoan__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;
  color: var(--page-khuyen-mai-dieu-khoan-text-main);
}
details.page-khuyen-mai-dieu-khoan__faq-item summary.page-khuyen-mai-dieu-khoan__faq-question::-webkit-details-marker {
  display: none;
}
details.page-khuyen-mai-dieu-khoan__faq-item summary.page-khuyen-mai-dieu-khoan__faq-question:hover {
  background: rgba(255, 255, 255, 0.05); /* Lighter hover for dark background */
}
.page-khuyen-mai-dieu-khoan__faq-qtext {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
}
.page-khuyen-mai-dieu-khoan__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--page-khuyen-mai-dieu-khoan-glow);
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}
details.page-khuyen-mai-dieu-khoan__faq-item .page-khuyen-mai-dieu-khoan__faq-answer {
  padding: 0 20px 20px;
  background: rgba(0, 0, 0, 0.2); /* Slightly darker for answer */
  border-radius: 0 0 5px 5px;
  color: var(--page-khuyen-mai-dieu-khoan-text-secondary);
}

.page-khuyen-mai-dieu-khoan__final-cta {
    padding: 80px 0;
}

.page-khuyen-mai-dieu-khoan__text-center {
    text-align: center;
}

/* --- Mobile Responsive Styles (max-width: 768px) --- */
@media (max-width: 768px) {
    .page-khuyen-mai-dieu-khoan__container {
        padding: 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    .page-khuyen-mai-dieu-khoan__section {
        padding: 40px 0;
    }

    .page-khuyen-mai-dieu-khoan__hero-section {
        min-height: 400px;
        padding-top: 10px; /* Small top padding for mobile */
    }

    .page-khuyen-mai-dieu-khoan__hero-image {
        max-height: 300px;
    }

    .page-khuyen-mai-dieu-khoan__hero-image img {
        object-fit: contain !important; /* Mobile: contain, not cover */
        aspect-ratio: unset !important; /* Allow natural aspect ratio */
        filter: brightness(0.6); /* Slightly darker for mobile contrast */
    }

    .page-khuyen-mai-dieu-khoan__hero-content {
        padding: 10px;
        top: 55%; /* Adjust position for mobile */
    }

    .page-khuyen-mai-dieu-khoan__main-title {
        font-size: clamp(1.8rem, 8vw, 2.5rem); /* Adjust clamp for mobile H1 */
        margin-bottom: 10px;
    }

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

    /* Buttons and Button Containers */
    .page-khuyen-mai-dieu-khoan__cta-buttons {
        flex-direction: column; /* Stack buttons vertically */
        gap: 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        flex-wrap: wrap !important; /* Ensure wrapping if for some reason they don't stack */
    }

    .page-khuyen-mai-dieu-khoan__btn-primary,
    .page-khuyen-mai-dieu-khoan__btn-secondary {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        padding: 12px 20px;
        font-size: 1rem;
    }
    
    .page-khuyen-mai-dieu-khoan__section-title {
        font-size: clamp(1.8rem, 7vw, 2.2rem);
        margin-bottom: 30px;
    }

    .page-khuyen-mai-dieu-khoan__article-body {
        font-size: 1rem;
    }

    .page-khuyen-mai-dieu-khoan__article-body p {
        margin-bottom: 15px;
    }
    
    /* General Images and Containers */
    .page-khuyen-mai-dieu-khoan img {
      max-width: 100% !important;
      width: 100% !important;
      height: auto !important;
      display: block;
    }

    .page-khuyen-mai-dieu-khoan__promo-grid {
        grid-template-columns: 1fr; /* Single column for promo cards */
        gap: 20px;
    }

    .page-khuyen-mai-dieu-khoan__card {
        padding: 20px;
        min-height: unset; /* Allow height to adjust */
    }

    .page-khuyen-mai-dieu-khoan__card-title {
        font-size: 1.3rem;
    }

    .page-khuyen-mai-dieu-khoan__grid-two-cols {
        grid-template-columns: 1fr; /* Single column for two-column grid */
        gap: 30px;
    }

    .page-khuyen-mai-dieu-khoan__sub-title {
        font-size: 1.5rem;
        margin-top: 20px;
    }

    .page-khuyen-mai-dieu-khoan__process-list li {
        padding-left: 50px;
        margin-bottom: 30px;
    }

    .page-khuyen-mai-dieu-khoan__process-list li::before {
        left: -15px;
        width: 30px;
        height: 30px;
        font-size: 1rem;
    }

    .page-khuyen-mai-dieu-khoan__list-title {
        font-size: 1.4rem;
    }
    
    /* FAQ Section */
    details.page-khuyen-mai-dieu-khoan__faq-item summary.page-khuyen-mai-dieu-khoan__faq-question { padding: 15px; }
    .page-khuyen-mai-dieu-khoan__faq-qtext { font-size: 15px; }
    .page-khuyen-mai-dieu-khoan__faq-toggle { font-size: 20px; width: 24px; text-align: center; }
    details.page-khuyen-mai-dieu-khoan__faq-item .page-khuyen-mai-dieu-khoan__faq-answer { padding: 0 15px 15px; }
}