.page-da-ga {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: #F3F8FF; /* Text Main */
  background-color: #08162B; /* Deep Navy - body background from shared.css */
}

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

.page-da-ga__section-title {
  font-size: 36px;
  font-weight: 700;
  color: #F3F8FF; /* Text Main */
  text-align: center;
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 15px;
}

.page-da-ga__section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, #1D5FD1 0%, #4FA8FF 100%); /* Blue Gold gradient */
  border-radius: 2px;
}

.page-da-ga__content-area p {
  font-size: 18px;
  margin-bottom: 15px;
  color: #AFC4E8; /* Text Secondary */
}

.page-da-ga__hero-section {
  position: relative;
  padding-top: 10px; /* Small top padding, body handles header offset */
  background-color: #08162B;
  overflow: hidden;
}

.page-da-ga__hero-image-wrapper {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  overflow: hidden;
}

.page-da-ga__hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-da-ga__hero-content {
  position: relative;
  text-align: center;
  padding: 60px 20px;
  z-index: 1;
  background: rgba(8, 22, 43, 0.7); /* Slightly darker overlay for text readability */
  margin-top: -10px; /* Pull up slightly to overlap image for design but not content */
}

.page-da-ga__main-title {
  font-size: clamp(32px, 5vw, 48px);
  color: #F3F8FF; /* Text Main */
  margin-bottom: 20px;
  line-height: 1.2;
  font-weight: 800;
}

.page-da-ga__hero-description {
  font-size: 20px;
  color: #AFC4E8; /* Text Secondary */
  max-width: 800px;
  margin: 0 auto 30px;
}

.page-da-ga__hero-cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.page-da-ga__btn {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 18px;
  transition: all 0.3s ease;
  cursor: pointer;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-da-ga__btn--primary {
  background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  color: #ffffff;
  border: none;
}

.page-da-ga__btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(43, 115, 246, 0.4);
}

.page-da-ga__btn--secondary {
  background: #ffffff;
  color: #113B7A;
  border: 2px solid #113B7A;
}

.page-da-ga__btn--secondary:hover {
  background: #f0f0f0;
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(17, 59, 122, 0.2);
}

.page-da-ga__introduction-section {
  padding: 80px 0;
  background-color: #08162B; /* Deep Navy */
}

.page-da-ga__image-text-block {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-top: 30px;
}

.page-da-ga__image-text-block:nth-of-type(even) {
  flex-direction: row-reverse;
}

.page-da-ga__content-image {
  flex: 0 0 50%;
  max-width: 50%;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  display: block;
}

.page-da-ga__image-text-block p {
  flex: 1;
}

.page-da-ga__game-types-section {
  padding: 80px 0;
  background-color: #10233F; /* Card BG */
}

.page-da-ga__grid {
  display: grid;
  gap: 30px;
}

.page-da-ga__grid--3-cols {
  grid-template-columns: repeat(3, 1fr);
}

.page-da-ga__card {
  background-color: #10233F; /* Card BG */
  border: 1px solid #244D84; /* Border */
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  text-align: center;
  padding: 25px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
}

.page-da-ga__card-image {
  width: 100%;
  height: 200px; /* Fixed height for consistency */
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
  display: block;
}

.page-da-ga__card-title {
  font-size: 22px;
  color: #F3F8FF; /* Text Main */
  margin-bottom: 15px;
  font-weight: 600;
}

.page-da-ga__card-description {
  font-size: 16px;
  color: #AFC4E8; /* Text Secondary */
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-da-ga__btn--small {
  padding: 10px 20px;
  font-size: 16px;
  border-radius: 5px;
  background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  color: #ffffff;
  border: none;
}

.page-da-ga__btn--small:hover {
  transform: translateY(-2px);
  box-shadow: 0 3px 10px rgba(43, 115, 246, 0.3);
}

.page-da-ga__how-to-play-section {
  padding: 80px 0;
  background-color: #08162B; /* Deep Navy */
}

.page-da-ga__instruction-list {
  list-style: none;
  padding: 0;
  counter-reset: instruction-counter;
}

.page-da-ga__list-item {
  background-color: #10233F; /* Card BG */
  border: 1px solid #244D84; /* Border */
  border-radius: 10px;
  padding: 30px;
  margin-bottom: 20px;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-da-ga__list-item::before {
  counter-increment: instruction-counter;
  content: "0" counter(instruction-counter) ".";
  position: absolute;
  top: 30px;
  left: 30px;
  font-size: 48px;
  font-weight: 700;
  color: #1D5FD1;
  opacity: 0.2;
  line-height: 1;
}

.page-da-ga__list-title {
  font-size: 24px;
  color: #F3F8FF; /* Text Main */
  margin-bottom: 10px;
  font-weight: 600;
  padding-left: 70px;
}

.page-da-ga__list-item p {
  color: #AFC4E8; /* Text Secondary */
  padding-left: 70px;
}

.page-da-ga__center-cta {
  text-align: center;
  margin-top: 40px;
}

.page-da-ga__why-lucky8-section {
  padding: 80px 0;
  background-color: #10233F; /* Card BG */
}

.page-da-ga__features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.page-da-ga__feature-item {
  background-color: #08162B; /* Deep Navy */
  border: 1px solid #244D84; /* Border */
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
}

.page-da-ga__feature-icon {
  width: 100px;
  height: 100px;
  object-fit: contain;
  margin-bottom: 20px;
  display: block;
}

.page-da-ga__feature-title {
  font-size: 20px;
  color: #F3F8FF; /* Text Main */
  margin-bottom: 10px;
  font-weight: 600;
}

.page-da-ga__feature-description {
  font-size: 16px;
  color: #AFC4E8; /* Text Secondary */
  flex-grow: 1;
}

.page-da-ga__faq-section {
  padding: 80px 0;
  background-color: #08162B; /* Deep Navy */
}

details.page-da-ga__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  border: 1px solid #244D84; /* Border */
  overflow: hidden;
  background: #10233F; /* Card BG */
}

details.page-da-ga__faq-item summary.page-da-ga__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;
}

details.page-da-ga__faq-item summary.page-da-ga__faq-question::-webkit-details-marker {
  display: none;
}

details.page-da-ga__faq-item summary.page-da-ga__faq-question:hover {
  background: rgba(29, 95, 209, 0.1); /* Lighter hover from auxiliary color */
}

.page-da-ga__faq-qtext {
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: #F3F8FF; /* Text Main */
}

.page-da-ga__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: #1D5FD1; /* Auxiliary color */
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}

details.page-da-ga__faq-item .page-da-ga__faq-answer {
  padding: 0 20px 20px;
  background: rgba(16, 35, 63, 0.8); /* Slightly lighter Card BG */
  border-radius: 0 0 5px 5px;
}

details.page-da-ga__faq-item .page-da-ga__faq-answer p {
  color: #AFC4E8; /* Text Secondary */
  font-size: 16px;
}

.page-da-ga__cta-banner {
  background: linear-gradient(135deg, #113B7A 0%, #1D5FD1 100%);
  padding: 60px 0;
  text-align: center;
  color: #F3F8FF; /* Text Main */
}

.page-da-ga__cta-content {
  max-width: 900px;
}

.page-da-ga__cta-title {
  font-size: 38px;
  color: #F3F8FF; /* Text Main */
  margin-bottom: 20px;
  font-weight: 700;
}

.page-da-ga__cta-description {
  font-size: 20px;
  color: #AFC4E8; /* Text Secondary */
  margin-bottom: 40px;
}

.page-da-ga__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
}

/* General image responsiveness */
.page-da-ga img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Media Queries for responsiveness */
@media (max-width: 1024px) {
  .page-da-ga__container {
    padding: 15px;
  }

  .page-da-ga__hero-content {
    padding: 40px 15px;
  }

  .page-da-ga__main-title {
    font-size: clamp(28px, 4vw, 40px);
  }

  .page-da-ga__hero-description {
    font-size: 18px;
  }

  .page-da-ga__grid--3-cols {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-da-ga__features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-da-ga__section-title {
    font-size: 30px;
  }

  .page-da-ga__cta-title {
    font-size: 32px;
  }

  .page-da-ga__cta-description {
    font-size: 18px;
  }
}

@media (max-width: 768px) {
  /* HERO 主图区域 */
  .page-da-ga__hero-section {
    padding-top: 10px;
  }
  .page-da-ga__hero-image-wrapper {
    padding-bottom: 75%; /* More suitable for mobile portrait (4:3) */
  }
  .page-da-ga__hero-image {
    object-fit: contain !important; /* Prevent cropping on mobile */
    aspect-ratio: unset !important;
  }
  .page-da-ga__hero-content {
    padding: 30px 15px;
  }
  .page-da-ga__main-title {
    font-size: clamp(24px, 7vw, 36px);
  }
  .page-da-ga__hero-description {
    font-size: 16px;
  }
  .page-da-ga__hero-cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-da-ga__btn {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    padding: 12px 20px;
    font-size: 16px;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  .page-da-ga__btn--small {
    width: auto !important;
  }

  /* 通用图片与容器 */
  .page-da-ga img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-da-ga__section,
  .page-da-ga__card,
  .page-da-ga__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* 装饰主标题 + 长文 SEO 区 */
  .page-da-ga__section-title {
    font-size: 28px;
    margin-bottom: 30px;
  }
  .page-da-ga__content-area p {
    font-size: 16px;
  }
  .page-da-ga__image-text-block {
    flex-direction: column;
    gap: 20px;
  }
  .page-da-ga__content-image {
    max-width: 100%;
    flex: none;
  }
  .page-da-ga__image-text-block:nth-of-type(even) {
    flex-direction: column;
  }

  /* 产品展示图区域 */
  .page-da-ga__grid--3-cols {
    grid-template-columns: 1fr;
  }
  .page-da-ga__card {
    padding: 20px;
  }
  .page-da-ga__card-title {
    font-size: 20px;
  }
  .page-da-ga__card-image {
    height: 180px;
  }
  .page-da-ga__features-grid {
    grid-template-columns: 1fr;
  }
  .page-da-ga__feature-item {
    padding: 20px;
  }
  .page-da-ga__feature-icon {
    width: 80px;
    height: 80px;
  }
  .page-da-ga__feature-title {
    font-size: 18px;
  }

  /* FAQ */
  details.page-da-ga__faq-item summary.page-da-ga__faq-question {
    padding: 15px;
  }
  .page-da-ga__faq-qtext {
    font-size: 16px;
  }
  details.page-da-ga__faq-item .page-da-ga__faq-answer {
    padding: 0 15px 15px;
  }

  /* Hướng Dẫn */
  .page-da-ga__list-item {
    padding: 20px;
  }
  .page-da-ga__list-item::before {
    font-size: 36px;
    top: 20px;
    left: 20px;
  }
  .page-da-ga__list-title {
    font-size: 20px;
    padding-left: 50px;
  }
  .page-da-ga__list-item p {
    padding-left: 50px;
  }

  /* CTA Banner */
  .page-da-ga__cta-title {
    font-size: 28px;
  }
  .page-da-ga__cta-description {
    font-size: 16px;
  }
  .page-da-ga__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
}

@media (max-width: 480px) {
  .page-da-ga__section-title {
    font-size: 24px;
  }
  .page-da-ga__main-title {
    font-size: clamp(22px, 8vw, 30px);
  }
  .page-da-ga__cta-title {
    font-size: 24px;
  }
}