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

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

.page-khuyen-mai__dark-bg {
  background-color: var(--deep-navy);
  color: var(--text-main);
}

.page-khuyen-mai__light-bg {
  background-color: #f5f5f5;
  color: var(--text-main-dark);
}

.page-khuyen-mai__hero-section {
  padding-top: 10px; /* Small top padding, relies on body padding-top from shared.css */
  padding-bottom: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-khuyen-mai__hero-section .page-khuyen-mai__container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
}

.page-khuyen-mai__hero-content {
  max-width: 800px;
  z-index: 1;
}

.page-khuyen-mai__hero-title {
  font-size: clamp(2.5em, 5vw, 3.5em);
  font-weight: bold;
  color: var(--gold);
  margin-bottom: 20px;
  line-height: 1.2;
}

.page-khuyen-mai__hero-description {
  font-size: 1.1em;
  color: var(--text-secondary);
  margin-bottom: 30px;
}

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

.page-khuyen-mai__hero-image-wrapper {
  z-index: 0;
  margin-top: 40px; /* Space between content and image */
}

.page-khuyen-mai__hero-image {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 0 20px var(--glow);
}

.page-khuyen-mai__section-title {
  font-size: 2.5em;
  font-weight: bold;
  color: var(--deep-navy);
  text-align: center;
  margin-bottom: 40px;
  padding-top: 60px;
}

.page-khuyen-mai__section-title--light {
  color: var(--text-main);
}

.page-khuyen-mai__text-block {
  font-size: 1em;
  line-height: 1.7;
  margin-bottom: 20px;
  color: var(--text-main-dark);
}

.page-khuyen-mai__text-block--light {
  color: var(--text-secondary);
}

.page-khuyen-mai__link-secondary {
  color: var(--auxiliary-color);
  text-decoration: underline;
}

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

.page-khuyen-mai__intro-section .page-khuyen-mai__container {
  max-width: 900px;
}

.page-khuyen-mai__promotions-list-section {
  padding: 80px 0;
  background-color: var(--card-bg);
}

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

.page-khuyen-mai__promo-card {
  background-color: var(--card-bg);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.page-khuyen-mai__promo-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

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

.page-khuyen-mai__card-title {
  font-size: 1.5em;
  font-weight: bold;
  color: var(--gold);
  margin-bottom: 15px;
  line-height: 1.3;
}

.page-khuyen-mai__card-description {
  font-size: 0.95em;
  color: var(--text-secondary);
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
  display: inline-block;
  padding: 12px 25px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  transition: all 0.3s ease;
  text-align: center;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
}

.page-khuyen-mai__btn-primary {
  background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  color: var(--text-main);
  border: 2px solid transparent;
}

.page-khuyen-mai__btn-primary:hover {
  background: linear-gradient(180deg, #1144A6 0%, #2B73F6 100%);
  box-shadow: 0 0 15px var(--glow);
}

.page-khuyen-mai__btn-secondary {
  background: transparent;
  color: var(--text-main);
  border: 2px solid var(--auxiliary-color);
}

.page-khuyen-mai__btn-secondary:hover {
  background: var(--auxiliary-color);
  color: var(--deep-navy);
  box-shadow: 0 0 15px var(--glow);
}

.page-khuyen-mai__btn-primary--small {
  font-size: 0.9em;
  padding: 10px 20px;
}

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

.page-khuyen-mai__guide-list {
  list-style: none;
  padding: 0;
  margin-top: 40px;
}

.page-khuyen-mai__guide-item {
  background-color: #fff;
  padding: 30px;
  border-radius: 10px;
  margin-bottom: 20px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  border-left: 5px solid var(--auxiliary-color);
  color: var(--deep-navy);
}

.page-khuyen-mai__guide-step-title {
  font-size: 1.6em;
  color: var(--main-color);
  margin-bottom: 15px;
}

.page-khuyen-mai__guide-item p {
  color: var(--deep-navy);
  font-size: 1em;
}

.page-khuyen-mai__guide-item a {
  color: var(--auxiliary-color);
  text-decoration: underline;
}

.page-khuyen-mai__guide-cta {
  text-align: center;
  margin-top: 40px;
}

.page-khuyen-mai__terms-section {
  padding: 80px 0;
  background-color: var(--card-bg);
}

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

.page-khuyen-mai__cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: 40px;
  flex-wrap: wrap;
}

/* --- General Image and Button Responsive Styles --- */
.page-khuyen-mai img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-khuyen-mai a[class*="btn"],
.page-khuyen-mai a[class*="button"] {
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-khuyen-mai__cta-buttons,
.page-khuyen-mai__hero-cta-buttons,
.page-khuyen-mai__button-group,
.page-khuyen-mai__btn-container {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

/* --- Media Queries --- */
@media (max-width: 1024px) {
  .page-khuyen-mai__hero-title {
    font-size: clamp(2em, 4.5vw, 3em);
  }

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

  .page-khuyen-mai__promotions-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

@media (max-width: 768px) {
  .page-khuyen-mai__hero-section {
    padding-top: 10px !important;
    padding-bottom: 40px;
  }

  .page-khuyen-mai__hero-content {
    padding: 0 15px;
  }

  .page-khuyen-mai__hero-title {
    font-size: clamp(1.8em, 7vw, 2.5em);
    margin-bottom: 15px;
  }

  .page-khuyen-mai__hero-description {
    font-size: 1em;
    margin-bottom: 20px;
  }

  .page-khuyen-mai__hero-cta-buttons {
    flex-direction: column;
    gap: 15px;
  }

  .page-khuyen-mai__hero-image-wrapper {
    margin-top: 30px;
  }

  .page-khuyen-mai__section-title {
    font-size: 1.8em;
    margin-bottom: 30px;
    padding-top: 40px;
  }

  .page-khuyen-mai__intro-section,
  .page-khuyen-mai__promotions-list-section,
  .page-khuyen-mai__guide-section,
  .page-khuyen-mai__terms-section,
  .page-khuyen-mai__cta-section {
    padding: 40px 0;
  }

  .page-khuyen-mai__promotions-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-khuyen-mai__promo-card {
    margin: 0 15px; /* Add horizontal margin for cards */
  }

  .page-khuyen-mai__promo-image {
    height: 180px;
  }

  .page-khuyen-mai__card-title {
    font-size: 1.3em;
  }

  .page-khuyen-mai__card-description {
    font-size: 0.9em;
  }

  .page-khuyen-mai__guide-item {
    padding: 20px;
    margin: 0 15px 20px;
  }

  .page-khuyen-mai__guide-step-title {
    font-size: 1.4em;
  }

  .page-khuyen-mai__guide-cta {
    margin-top: 30px;
  }

  .page-khuyen-mai__cta-buttons {
    flex-direction: column;
    gap: 15px;
    margin-top: 30px;
  }

  /* --- Mobile Image and Button Mandatory Overrides --- */
  .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;
  }

  .page-khuyen-mai__cta-button,
  .page-khuyen-mai__btn-primary,
  .page-khuyen-mai__btn-secondary,
  .page-khuyen-mai a[class*="button"],
  .page-khuyen-mai 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-khuyen-mai__cta-buttons,
  .page-khuyen-mai__button-group,
  .page-khuyen-mai__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;
    display: flex;
    flex-direction: column; /* Ensure vertical stacking for buttons */
  }

  /* --- Placeholder rules for 768px checklist (even if HTML not generated on this page) --- */
  /* 顶区轮播 (already covered by .page-khuyen-mai__hero-section rules) */
  /* 操作指引外框 + 五张 `team` 竖型卡 - Placeholder */
  .page-khuyen-mai__guide-box,
  .page-khuyen-mai__guide-grid,
  .page-khuyen-mai__guide-card {
    /* These elements are not generated on this page, but media query rules are included as per checklist. */
    /* Example minimal rules if they were present: */
    display: block;
    width: 100%;
    padding-top: 0 !important;
  }
  .page-khuyen-mai__guide-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 10px;
  }
  .page-khuyen-mai__guide-card--pos-1, .page-khuyen-mai__guide-card--pos-2 {
    grid-column: span 3;
  }
  .page-khuyen-mai__guide-card--pos-3, .page-khuyen-mai__guide-card--pos-4, .page-khuyen-mai__guide-card--pos-5 {
    grid-column: span 2;
  }
  .page-khuyen-mai__guide-card img {
    aspect-ratio: 250/350;
    object-fit: contain;
    width: 100%;
    height: auto;
  }

  /* `home_content` 外框 - Placeholder */
  .page-khuyen-mai__home-content-box {
    max-width: 100% !important;
    height: auto !important;
    margin: 0 15px !important;
    box-shadow: none !important;
    border: none !important;
  }
  .page-khuyen-mai__home-content-inner {
    height: auto !important;
    overflow: visible !important;
  }

  /* 博客卡片区 - Placeholder */
  .page-khuyen-mai__blog-section,
  .page-khuyen-mai__blog-grid {
    /* These elements are not generated on this page, but media query rules are included as per checklist. */
    /* Example minimal rules if they were present: */
    display: block;
    width: 100%;
  }
  .page-khuyen-mai__blog-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* Custom colors from requirements */
:root {
  --main-color: #113B7A;
  --auxiliary-color: #1D5FD1;
  --button-gradient: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  --card-bg: #10233F;
  --text-main: #F3F8FF;
  --text-secondary: #AFC4E8;
  --border-color: #244D84;
  --glow-color: #4FA8FF;
  --gold: #F2C14E;
  --divider-color: #1B3357;
  --deep-navy: #08162B;
  --text-main-dark: #333333; /* For light backgrounds */
}

/* Ensure contrast for light background sections */
.page-khuyen-mai__light-bg .page-khuyen-mai__section-title,
.page-khuyen-mai__light-bg .page-khuyen-mai__text-block {
  color: var(--deep-navy);
}

.page-khuyen-mai__light-bg .page-khuyen-mai__guide-item {
  background-color: #ffffff;
  color: var(--deep-navy);
}
.page-khuyen-mai__light-bg .page-khuyen-mai__guide-step-title {
  color: var(--main-color);
}
.page-khuyen-mai__light-bg .page-khuyen-mai__guide-item p {
  color: var(--deep-navy);
}