.page-promotions {
  font-family: 'Arial', sans-serif;
  color: var(--text-main); /* Default text color for dark body background */
  background-color: var(--deep-navy);
}

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

.page-promotions__section {
  padding: 40px 0;
}

.page-promotions__hero-section {
  padding-top: 10px; /* Small top padding, assuming shared.css handles body padding-top */
  background: linear-gradient(180deg, var(--deep-navy) 0%, #113B7A 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.page-promotions__hero-image {
  width: 100%;
  max-height: 600px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 20px;
}

.page-promotions__hero-image img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  max-height: 600px;
}

.page-promotions__hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 20px;
}

.page-promotions__main-title {
  font-size: clamp(2em, 3.5vw, 3.5em);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 15px;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.page-promotions__hero-description {
  font-size: 1.1em;
  color: var(--text-secondary);
  margin-bottom: 30px;
  line-height: 1.6;
}

.page-promotions__cta-button {
  display: inline-block;
  background: var(--button-gradient);
  color: var(--text-main);
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1em;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-promotions__cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-promotions__section-title {
  font-size: clamp(1.8em, 3vw, 2.5em);
  font-weight: 700;
  color: var(--gold);
  text-align: center;
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 15px;
}

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

.page-promotions__introduction-section .page-promotions__content-wrapper {
  display: flex;
  align-items: center;
  gap: 40px;
}

.page-promotions__introduction-section .page-promotions__text-block {
  flex: 2;
  text-align: justify;
}

.page-promotions__introduction-section .page-promotions__image-block {
  flex: 1;
}

.page-promotions__introduction-section .page-promotions__image-block img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-promotions p {
  font-size: 1em;
  line-height: 1.7;
  margin-bottom: 1em;
  color: var(--text-secondary);
}

.page-promotions p strong {
  color: var(--text-main);
}

.page-promotions__promotion-types-section {
  background-color: var(--card-bg);
  padding: 60px 0;
}

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

.page-promotions__promo-card {
  background: #10233F; /* Custom Card BG */
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.page-promotions__promo-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.page-promotions__card-title {
  font-size: 1.5em;
  font-weight: 600;
  color: var(--gold);
  margin-bottom: 15px;
  line-height: 1.3;
}

.page-promotions__promo-card p {
  font-size: 0.95em;
  color: var(--text-secondary);
  flex-grow: 1;
}

.page-promotions__card-button {
  display: inline-block;
  background: var(--button-gradient);
  color: var(--text-main);
  padding: 10px 20px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95em;
  margin-top: 20px;
  transition: transform 0.3s ease;
  border: none;
  cursor: pointer;
}

.page-promotions__card-button:hover {
  transform: translateY(-2px);
}

.page-promotions__how-to-join-section {
  background-color: var(--deep-navy);
  padding: 60px 0;
}

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

.page-promotions__step-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-promotions__step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: var(--button-gradient);
  color: var(--text-main);
  font-size: 2em;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.page-promotions__step-title {
  font-size: 1.3em;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 15px;
}

.page-promotions__step-item p {
  color: var(--text-secondary);
}

.page-promotions__step-item a {
  color: var(--gold);
  text-decoration: underline;
  transition: color 0.3s ease;
}

.page-promotions__step-item a:hover {
  color: #fff;
}

.page-promotions__cta-wrapper {
  text-align: center;
  margin-top: 50px;
}

.page-promotions__cta-button--wide {
  min-width: 250px;
  padding: 18px 40px;
  font-size: 1.2em;
}

.page-promotions__important-notes-section {
  background-color: #08162B; /* Deep Navy */
  padding: 60px 0;
}

.page-promotions__important-notes-section .page-promotions__content-wrapper {
  display: flex;
  align-items: flex-start;
  gap: 40px;
}

.page-promotions__important-notes-section .page-promotions__image-block {
  flex: 1;
}

.page-promotions__important-notes-section .page-promotions__image-block img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-promotions__notes-list {
  flex: 2;
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-promotions__notes-list .page-promotions__list-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.page-promotions__notes-list .page-promotions__list-item strong {
  color: var(--text-main);
  font-size: 1.1em;
}

.page-promotions__faq-section {
  background-color: var(--deep-navy);
  padding: 60px 0;
}

.page-promotions__faq-list {
  margin-top: 40px;
}

details.page-promotions__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  border: 1px solid var(--border);
  overflow: hidden;
  background: var(--card-bg);
}

details.page-promotions__faq-item summary.page-promotions__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-promotions__faq-item summary.page-promotions__faq-question::-webkit-details-marker {
  display: none;
}

details.page-promotions__faq-item summary.page-promotions__faq-question:hover {
  background: rgba(var(--text-main-rgb), 0.05);
}

.page-promotions__faq-qtext {
  flex: 1;
  font-size: 1.1em;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--text-main);
}

.page-promotions__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--gold);
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}

details.page-promotions__faq-item .page-promotions__faq-answer {
  padding: 0 25px 25px;
  background: rgba(var(--text-main-rgb), 0.02);
  border-radius: 0 0 8px 8px;
  color: var(--text-secondary);
}

.page-promotions__conclusion-section {
  background-color: var(--deep-navy);
  padding: 60px 0;
  text-align: center;
}

.page-promotions__conclusion-section .page-promotions__text-block {
  max-width: 900px;
  margin: 0 auto 30px auto;
  color: var(--text-secondary);
}

.page-promotions__conclusion-section .page-promotions__text-block a {
  color: var(--gold);
  text-decoration: underline;
}

.page-promotions__conclusion-section .page-promotions__text-block a:hover {
  color: var(--text-main);
}

/* Custom colors (BEM) */
:root {
  --primary-color: #113B7A;
  --secondary-color: #1D5FD1;
  --button-gradient: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  --card-bg: #10233F;
  --text-main: #F3F8FF;
  --text-main-rgb: 243, 248, 255;
  --text-secondary: #AFC4E8;
  --border: #244D84;
  --glow: #4FA8FF;
  --gold: #F2C14E;
  --divider: #1B3357;
  --deep-navy: #08162B;
}

/* Universal image responsive styles */
.page-promotions img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Mobile responsive styles */
@media (max-width: 1024px) {
  .page-promotions__container {
    padding: 0 15px;
  }
  .page-promotions__hero-image img {
    max-height: 500px;
  }
  .page-promotions__main-title {
    font-size: clamp(2em, 4vw, 3em);
  }
  .page-promotions__hero-description {
    font-size: 1em;
  }
  .page-promotions__section-title {
    font-size: clamp(1.8em, 3.5vw, 2.2em);
  }
  .page-promotions__introduction-section .page-promotions__content-wrapper,
  .page-promotions__important-notes-section .page-promotions__content-wrapper {
    flex-direction: column;
    gap: 30px;
  }
  .page-promotions__introduction-section .page-promotions__image-block,
  .page-promotions__important-notes-section .page-promotions__image-block {
    order: -1; /* Image first on mobile */
  }
  .page-promotions__cards-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
  .page-promotions__steps-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
  details.page-promotions__faq-item summary.page-promotions__faq-question {
    padding: 15px 20px;
  }
  .page-promotions__faq-qtext {
    font-size: 1em;
  }
  details.page-promotions__faq-item .page-promotions__faq-answer {
    padding: 0 20px 20px;
  }
}

@media (max-width: 768px) {
  /* HERO 主图区域 */
  .page-promotions__hero-section {
    padding-top: 10px; /* Small top padding, not var(--header-offset) */
  }
  .page-promotions__hero-image img {
    object-fit: contain !important; /* Ensure image is not cropped */
    aspect-ratio: unset !important;
    max-height: 300px;
  }
  .page-promotions__hero-content {
    padding: 15px;
  }
  .page-promotions__main-title {
    font-size: clamp(1.8em, 7vw, 2.5em);
    line-height: 1.3;
  }
  .page-promotions__hero-description {
    font-size: 0.95em;
  }
  .page-promotions__cta-button {
    padding: 12px 25px;
    font-size: 1em;
  }

  /* General sections and content wrappers */
  .page-promotions__section {
    padding: 30px 0;
  }
  .page-promotions__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* Product/Promotion grid (cards) */
  .page-promotions__cards-grid {
    grid-template-columns: 1fr; /* Single column for cards */
    gap: 20px;
  }
  .page-promotions__promo-card {
    padding: 20px;
  }
  .page-promotions__card-title {
    font-size: 1.3em;
  }
  .page-promotions__promo-card p {
    font-size: 0.9em;
  }

  /* Steps grid */
  .page-promotions__steps-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-promotions__step-item {
    padding: 20px;
  }
  .page-promotions__step-number {
    width: 50px;
    height: 50px;
    font-size: 1.8em;
  }
  .page-promotions__step-title {
    font-size: 1.2em;
  }

  /* Long text/article body section */
  .page-promotions__introduction-section .page-promotions__text-block,
  .page-promotions__important-notes-section .page-promotions__notes-list,
  .page-promotions__conclusion-section .page-promotions__text-block {
    text-align: left; /* Align text left for better readability on mobile */
    font-size: 0.95em;
    line-height: 1.6;
  }
  .page-promotions__introduction-section .page-promotions__image-block img,
  .page-promotions__important-notes-section .page-promotions__image-block img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
  }

  /* General images */
  .page-promotions img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
  }

  /* Buttons and button containers */
  .page-promotions__cta-button,
  .page-promotions__card-button,
  .page-promotions a[class*="button"],
  .page-promotions 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-promotions__cta-wrapper,
  .page-promotions__button-group,
  .page-promotions__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; /* Stack buttons vertically */
  }
  .page-promotions__cta-button--wide {
    min-width: unset;
  }

  /* FAQ section */
  details.page-promotions__faq-item summary.page-promotions__faq-question {
    padding: 15px;
  }
  .page-promotions__faq-qtext {
    font-size: 0.95em;
  }
  details.page-promotions__faq-item .page-promotions__faq-answer {
    padding: 0 15px 15px;
  }
}