/* style/blog-official-download-guide.css */
/* body đã padding-top: var(--header-offset)；tránh trùng lặp */

:root {
  --page-primary-color: #11A84E;
  --page-secondary-color: #22C768;
  --page-background-color: #08160F;
  --page-card-background: #11271B;
  --page-text-main: #F2FFF6;
  --page-text-secondary: #A7D9B8;
  --page-border-color: #2E7A4E;
  --page-glow-color: #57E38D;
  --page-gold-color: #F2C14E;
  --page-divider-color: #1E3A2A;
  --page-deep-green-color: #0A4B2C;
  --page-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
}

.page-blog-official-download-guide {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--page-text-main); /* Mặc định chữ sáng trên nền tối */
  background-color: var(--page-background-color); /* Nền tổng thể tối */
}

.page-blog-official-download-guide__section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-blog-official-download-guide__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 10px; /* Nhỏ gọn, dựa vào body padding-top */
  padding-bottom: 60px;
  overflow: hidden;
  background-color: var(--page-background-color);
}

.page-blog-official-download-guide__hero-image-wrapper {
  width: 100%;
  max-height: 700px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-blog-official-download-guide__hero-image {
  width: 1200px;
  height: 675px;
  object-fit: cover;
  display: block;
  opacity: 0.8;
}

.page-blog-official-download-guide__hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  padding: 40px 20px;
  box-sizing: border-box;
  background: rgba(8, 22, 15, 0.7); /* Nền tối nhẹ để chữ nổi bật */
  border-radius: 10px;
  margin-top: -100px; /* Kéo lên một chút để tạo lớp */
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.page-blog-official-download-guide__main-title {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--page-text-main);
  margin-bottom: 20px;
  /* Không dùng font-size cố định lớn, dùng clamp nếu cần thiết */
  font-size: clamp(2.2rem, 4vw + 1rem, 3.5rem);
}

.page-blog-official-download-guide__description {
  font-size: 1.1rem;
  color: var(--page-text-secondary);
  margin-bottom: 30px;
}

.page-blog-official-download-guide__cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-blog-official-download-guide__btn-primary,
.page-blog-official-download-guide__btn-secondary {
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  white-space: nowrap;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  max-width: 100%; /* Đảm bảo nút không tràn */
}

.page-blog-official-download-guide__btn-primary {
  background: var(--page-button-gradient);
  color: var(--page-text-main);
  border: none;
  box-shadow: 0 4px 15px rgba(17, 168, 78, 0.4);
}

.page-blog-official-download-guide__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(17, 168, 78, 0.6);
}

.page-blog-official-download-guide__btn-secondary {
  background: transparent;
  color: var(--page-primary-color);
  border: 2px solid var(--page-primary-color);
}

.page-blog-official-download-guide__btn-secondary:hover {
  background: var(--page-primary-color);
  color: var(--page-text-main);
  transform: translateY(-2px);
}

.page-blog-official-download-guide__cta-buttons--center {
    margin-top: 30px;
}

.page-blog-official-download-guide__section-title {
  font-size: clamp(1.8rem, 3vw + 1rem, 2.8rem);
  color: var(--page-gold-color);
  text-align: center;
  margin-bottom: 30px;
  font-weight: 700;
}

.page-blog-official-download-guide__text-block {
  font-size: 1.05rem;
  color: var(--page-text-secondary);
  text-align: center;
  max-width: 800px;
  margin: 0 auto 40px auto;
}

.page-blog-official-download-guide__dark-section {
  background-color: var(--page-background-color);
  color: var(--page-text-main);
  padding: 80px 0;
}

.page-blog-official-download-guide__light-bg {
  background-color: #F2FFF6; /* Nền sáng cho các phần nội dung chính */
  color: #333333; /* Chữ tối trên nền sáng */
  padding: 80px 0;
}

.page-blog-official-download-guide__light-bg .page-blog-official-download-guide__section-title {
  color: var(--page-primary-color);
}

.page-blog-official-download-guide__light-bg .page-blog-official-download-guide__text-block,
.page-blog-official-download-guide__light-bg p {
  color: #555555;
}

.page-blog-official-download-guide__features-grid,
.page-blog-official-download-guide__card-grid,
.page-blog-official-download-guide__promo-grid,
.page-blog-official-download-guide__advantage-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-blog-official-download-guide__card {
  background-color: var(--page-card-background);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--page-border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-blog-official-download-guide__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-blog-official-download-guide__feature-icon,
.page-blog-official-download-guide__promo-image,
.page-blog-official-download-guide__advantage-icon {
  width: 100%;
  height: auto;
  max-width: 200px; /* Giới hạn kích thước cho icon/ảnh nhỏ trong card */
  margin-bottom: 20px;
  border-radius: 8px;
  display: block;
  object-fit: cover;
}

.page-blog-official-download-guide__feature-icon {
    max-width: 100%;
    width: 400px;
    height: 300px;
}

.page-blog-official-download-guide__promo-image {
    max-width: 100%;
    width: 400px;
    height: 300px;
}

.page-blog-official-download-guide__advantage-icon {
    max-width: 100%;
    width: 200px;
    height: 200px;
}

.page-blog-official-download-guide__feature-title,
.page-blog-official-download-guide__card-title,
.page-blog-official-download-guide__promo-title,
.page-blog-official-download-guide__advantage-title {
  font-size: 1.5rem;
  color: var(--page-text-main);
  margin-bottom: 15px;
  font-weight: 600;
}

.page-blog-official-download-guide__card p {
  font-size: 0.95rem;
  color: var(--page-text-secondary);
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-blog-official-download-guide__download-guide {
  padding-top: 80px;
  padding-bottom: 80px;
}

.page-blog-official-download-guide__platform-tabs {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.page-blog-official-download-guide__tab-button {
  background: var(--page-card-background);
  color: var(--page-text-secondary);
  border: 1px solid var(--page-border-color);
  padding: 12px 25px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: all 0.3s ease;
  flex-grow: 1;
  max-width: 300px;
  box-sizing: border-box;
}

.page-blog-official-download-guide__tab-button.active,
.page-blog-official-download-guide__tab-button:hover {
  background: var(--page-button-gradient);
  color: var(--page-text-main);
  border-color: var(--page-primary-color);
  box-shadow: 0 2px 10px rgba(17, 168, 78, 0.3);
}

.page-blog-official-download-guide__platform-content {
  display: none;
}

.page-blog-official-download-guide__platform-content.active {
  display: block;
}

.page-blog-official-download-guide__platform-subtitle {
  font-size: 1.8rem;
  color: var(--page-gold-color);
  text-align: center;
  margin-bottom: 30px;
  font-weight: 600;
}

.page-blog-official-download-guide__step-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 30px;
}

.page-blog-official-download-guide__step-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background-color: var(--page-card-background);
  padding: 25px;
  border-radius: 10px;
  border: 1px solid var(--page-border-color);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.page-blog-official-download-guide__step-number {
  background: var(--page-button-gradient);
  color: var(--page-text-main);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  flex-shrink: 0;
}

.page-blog-official-download-guide__step-text h4 {
  font-size: 1.3rem;
  color: var(--page-gold-color);
  margin-top: 0;
  margin-bottom: 10px;
}

.page-blog-official-download-guide__step-text p {
  font-size: 1rem;
  color: var(--page-text-secondary);
  text-align: left;
  margin-bottom: 0;
}

.page-blog-official-download-guide__video-section {
  padding: 80px 0;
  text-align: center;
}

.page-blog-official-download-guide__video-wrapper {
  position: relative;
  width: 100%;
  max-width: 800px; /* Kích thước video */
  margin: 40px auto;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  background-color: #000;
  box-sizing: border-box;
}

.page-blog-official-download-guide__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  display: block;
  cursor: pointer;
}

.page-blog-official-download-guide__faq-section {
  padding-top: 80px;
  padding-bottom: 80px;
}

.page-blog-official-download-guide__faq-list {
  max-width: 900px;
  margin: 40px auto 0 auto;
}

.page-blog-official-download-guide__faq-item {
  background-color: var(--page-card-background);
  border: 1px solid var(--page-border-color);
  border-radius: 10px;
  margin-bottom: 15px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.page-blog-official-download-guide__faq-item[open] {
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.page-blog-official-download-guide__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  cursor: pointer;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--page-text-main);
  user-select: none;
  background-color: var(--page-deep-green-color);
  border-bottom: 1px solid transparent; /* default */
}

.page-blog-official-download-guide__faq-item[open] .page-blog-official-download-guide__faq-question {
  border-bottom-color: var(--page-border-color);
}

.page-blog-official-download-guide__faq-question::-webkit-details-marker {
  display: none;
}

.page-blog-official-download-guide__faq-question::marker {
  display: none;
}

.page-blog-official-download-guide__faq-qtext {
  flex-grow: 1;
}

.page-blog-official-download-guide__faq-toggle {
  font-size: 1.8rem;
  line-height: 1;
  margin-left: 15px;
  color: var(--page-glow-color);
}

.page-blog-official-download-guide__faq-answer {
  padding: 15px 25px 20px 25px;
  font-size: 1rem;
  color: var(--page-text-secondary);
  line-height: 1.7;
}

.page-blog-official-download-guide__why-choose {
  padding-top: 80px;
  padding-bottom: 80px;
}

.page-blog-official-download-guide__advantage-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-blog-official-download-guide__advantage-item {
  background-color: var(--page-card-background);
  padding: 25px;
  border-radius: 10px;
  text-align: center;
  border: 1px solid var(--page-border-color);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.page-blog-official-download-guide__advantage-item p {
    color: var(--page-text-secondary);
    font-size: 0.95rem;
}

/* --- Màu sắc thông minh và độ tương phản --- */
.page-blog-official-download-guide__dark-bg {
  color: var(--page-text-main); /* Chữ sáng trên nền tối */
  background-color: var(--page-background-color);
}

.page-blog-official-download-guide__light-bg {
  color: #333333; /* Chữ tối trên nền sáng */
  background-color: #f8f9fa;
}

.page-blog-official-download-guide__card {
  background-color: var(--page-card-background);
  color: var(--page-text-main);
  border: 1px solid var(--page-border-color);
}

.page-blog-official-download-guide__card p {
    color: var(--page-text-secondary);
}

.page-blog-official-download-guide__btn-primary {
  background: var(--page-button-gradient);
  color: var(--page-text-main);
}

.page-blog-official-download-guide__btn-secondary {
  background: transparent;
  color: var(--page-primary-color);
  border: 2px solid var(--page-primary-color);
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
  .page-blog-official-download-guide__hero-image {
    width: 100%;
    height: auto;
  }
}

@media (max-width: 768px) {
  .page-blog-official-download-guide__hero-section {
    padding-bottom: 40px;
  }

  .page-blog-official-download-guide__hero-content {
    margin-top: -60px;
    padding: 30px 15px;
  }

  .page-blog-official-download-guide__main-title {
    font-size: clamp(1.8rem, 5vw + 1rem, 2.5rem);
  }

  .page-blog-official-download-guide__description {
    font-size: 1rem;
  }

  .page-blog-official-download-guide__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }

  .page-blog-official-download-guide__btn-primary,
  .page-blog-official-download-guide__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-blog-official-download-guide__cta-buttons,
  .page-blog-official-download-guide__button-group,
  .page-blog-official-download-guide__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;
  }

  .page-blog-official-download-guide__section-title {
    font-size: clamp(1.5rem, 5vw + 1rem, 2.2rem);
    margin-bottom: 20px;
  }

  .page-blog-official-download-guide__text-block {
    font-size: 0.95rem;
    margin-bottom: 30px;
  }

  .page-blog-official-download-guide__features-grid,
  .page-blog-official-download-guide__card-grid,
  .page-blog-official-download-guide__promo-grid,
  .page-blog-official-download-guide__advantage-list {
    grid-template-columns: 1fr;
  }

  .page-blog-official-download-guide__card {
    padding: 20px;
  }

  .page-blog-official-download-guide__feature-title,
  .page-blog-official-download-guide__card-title,
  .page-blog-official-download-guide__promo-title,
  .page-blog-official-download-guide__advantage-title {
    font-size: 1.3rem;
  }

  .page-blog-official-download-guide__platform-tabs {
    flex-direction: column;
  }

  .page-blog-official-download-guide__tab-button {
    max-width: 100%;
  }

  .page-blog-official-download-guide__platform-subtitle {
    font-size: 1.5rem;
  }

  .page-blog-official-download-guide__step-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px;
  }

  .page-blog-official-download-guide__step-number {
    margin-bottom: 15px;
  }

  .page-blog-official-download-guide__step-text p {
    text-align: center;
  }

  .page-blog-official-download-guide__video-wrapper {
    margin-left: 15px;
    margin-right: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .page-blog-official-download-guide__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-blog-official-download-guide__video-section {
    padding-top: 10px !important; /* body đã xử lý header-offset */
    padding-left: 15px;
    padding-right: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .page-blog-official-download-guide__faq-question {
    font-size: 1rem;
    padding: 15px 20px;
  }

  .page-blog-official-download-guide__faq-answer {
    padding: 10px 20px 15px 20px;
    font-size: 0.95rem;
  }

  .page-blog-official-download-guide img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-blog-official-download-guide__section,
  .page-blog-official-download-guide__card,
  .page-blog-official-download-guide__container,
  .page-blog-official-download-guide__promo-card,
  .page-blog-official-download-guide__advantage-item,
  .page-blog-official-download-guide__step-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
}

@media (max-width: 480px) {
  .page-blog-official-download-guide__hero-content {
    padding: 20px 10px;
  }

  .page-blog-official-download-guide__main-title {
    font-size: clamp(1.5rem, 6vw + 1rem, 2rem);
  }

  .page-blog-official-download-guide__description {
    font-size: 0.9rem;
  }

  .page-blog-official-download-guide__btn-primary,
  .page-blog-official-download-guide__btn-secondary {
    font-size: 0.9rem;
    padding: 12px 20px;
  }

  .page-blog-official-download-guide__section-title {
    font-size: clamp(1.2rem, 6vw + 1rem, 1.8rem);
  }

  .page-blog-official-download-guide__platform-subtitle {
    font-size: 1.3rem;
  }

  .page-blog-official-download-guide__step-text h4 {
    font-size: 1.1rem;
  }
}