.page-blog-huong-dan-choi-ban-ca-doi-thuong {
  font-family: 'Arial', sans-serif;
  color: #1F2D3D; /* Text Main */
  background-color: #F4F7FB; /* Background */
  line-height: 1.6;
  font-size: 17px;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__article-wrap {
  max-width: 1150px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__top-section {
  padding-top: 10px; /* Small top padding as body handles header offset */
  padding-bottom: 40px;
  text-align: center;
  background-color: #F4F7FB;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__main-title {
  font-size: 2.8em;
  font-weight: 700;
  color: #1F2D3D;
  margin-bottom: 15px;
  line-height: 1.2;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__intro-text {
  font-size: 1.1em;
  color: #1F2D3D;
  max-width: 800px;
  margin: 0 auto 30px auto;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__top-cta {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  border-radius: 8px;
  font-size: 1.05em;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__btn-primary {
  background: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 15px rgba(47, 107, 255, 0.3);
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__btn-primary:hover {
  box-shadow: 0 6px 20px rgba(47, 107, 255, 0.4);
  transform: translateY(-2px);
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__btn-secondary {
  background-color: #ffffff;
  color: #2F6BFF;
  border: 2px solid #2F6BFF;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__btn-secondary:hover {
  background-color: #f0f5ff;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
  transform: translateY(-2px);
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__section {
  padding: 50px 0;
  background-color: #ffffff;
  margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  border-radius: 8px;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__section.page-blog-huong-dan-choi-ban-ca-doi-thuong__dark-section {
  background-color: #2F6BFF; /* Main Color */
  color: #ffffff;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__section.page-blog-huong-dan-choi-ban-ca-doi-thuong__dark-section .page-blog-huong-dan-choi-ban-ca-doi-thuong__heading-2,
.page-blog-huong-dan-choi-ban-ca-doi-thuong__section.page-blog-huong-dan-choi-ban-ca-doi-thuong__dark-section .page-blog-huong-dan-choi-ban-ca-doi-thuong__heading-3 {
  color: #ffffff;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__section.page-blog-huong-dan-choi-ban-ca-doi-thuong__dark-section .page-blog-huong-dan-choi-ban-ca-doi-thuong__paragraph,
.page-blog-huong-dan-choi-ban-ca-doi-thuong__section.page-blog-huong-dan-choi-ban-ca-doi-thuong__dark-section .page-blog-huong-dan-choi-ban-ca-doi-thuong__list-item {
  color: #e0f0ff;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__section.page-blog-huong-dan-choi-ban-ca-doi-thuong__dark-section a {
  color: #A5C4FF; /* Glow */
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__heading-2 {
  font-size: 2em;
  font-weight: 700;
  color: #1F2D3D;
  margin-bottom: 25px;
  text-align: center;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__heading-3 {
  font-size: 1.5em;
  font-weight: 600;
  color: #2F6BFF;
  margin-top: 35px;
  margin-bottom: 15px;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__paragraph {
  margin-bottom: 15px;
  line-height: 1.7;
  color: #1F2D3D;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__paragraph a {
  color: #2F6BFF;
  text-decoration: underline;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__paragraph a:hover {
  color: #6FA3FF;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__list {
  list-style: disc;
  margin-left: 25px;
  margin-bottom: 15px;
  color: #1F2D3D;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__list-item {
  margin-bottom: 10px;
  line-height: 1.6;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__list-item strong {
  color: #2F6BFF;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__figure {
  margin: 30px auto;
  max-width: 800px;
  text-align: center;
  background-color: #f0f5ff;
  padding: 10px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__image {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 6px;
  margin: 0 auto;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__figcaption {
  font-size: 0.9em;
  color: #666;
  margin-top: 10px;
  text-align: center;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__cta-box {
  background-color: #F4F7FB;
  border: 1px solid #D6E2FF;
  border-radius: 10px;
  padding: 30px;
  margin-top: 40px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__section.page-blog-huong-dan-choi-ban-ca-doi-thuong__dark-section .page-blog-huong-dan-choi-ban-ca-doi-thuong__cta-box {
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid #A5C4FF;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__cta-text {
  font-size: 1.2em;
  font-weight: 600;
  margin-bottom: 20px;
  color: #1F2D3D;
}

.page-blog-huong-dan-choi-ban-ca-doi-thuong__section.page-blog-huong-dan-choi-ban-ca-doi-thuong__dark-section .page-blog-huong-dan-choi-ban-ca-doi-thuong__cta-text {
  color: #ffffff;
}

/* --- Responsive Styles --- */

@media (max-width: 1024px) {
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__main-title {
    font-size: 2.5em;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__heading-2 {
    font-size: 1.8em;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__heading-3 {
    font-size: 1.3em;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__btn {
    padding: 12px 25px;
    font-size: 1em;
  }
}

@media (max-width: 768px) {
  .page-blog-huong-dan-choi-ban-ca-doi-thuong {
    font-size: 16px;
    line-height: 1.6;
  }
  
  /* 1. 顶区标题 + 双 CTA */
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__top-section {
    padding-top: 10px !important; /* Fixed header spacing */
    padding-bottom: 30px;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__main-title {
    font-size: 2em !important;
    margin-bottom: 10px;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__intro-text {
    font-size: 1em;
    margin-bottom: 20px;
    padding: 0 15px;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__top-cta {
    flex-direction: column;
    gap: 10px;
    padding: 0 15px;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__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;
  }
  
  /* 2. 单栏长文容器 */
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__article-wrap {
    padding: 0 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__section {
    padding: 30px 0;
    margin-bottom: 15px;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__heading-2 {
    font-size: 1.6em !important;
    margin-bottom: 20px;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__heading-3 {
    font-size: 1.2em !important;
    margin-top: 25px;
    margin-bottom: 10px;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__paragraph,
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__list-item {
    font-size: 1em;
    line-height: 1.6;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__list {
    margin-left: 20px;
  }

  /* 3. 通用图片与 figure */
  .page-blog-huong-dan-choi-ban-ca-doi-thuong img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__figure {
    margin: 20px auto;
    padding: 5px;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__figcaption {
    font-size: 0.85em;
  }

  /* 4. 按钮与按钮容器 */
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__cta-box {
    padding: 20px;
    margin-top: 30px;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__cta-text {
    font-size: 1.1em;
    margin-bottom: 15px;
  }

  /* 5. 注册教程与 FAQ 区块 (FAQ here is integrated as H3 Q&A, no special JS needed) */
  /* For H3 Q&A in this guide, basic text sizing is handled by paragraph/heading rules */
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__paragraph {
    font-size: 1em;
  }
  .page-blog-huong-dan-choi-ban-ca-doi-thuong__list {
    font-size: 1em;
  }
}