.page-blog {
  font-family: 'Arial', sans-serif;
  color: #333333; /* Default dark text for light body background */
  line-height: 1.6;
  background-color: #ffffff;
}

.page-blog__top-section {
  padding-top: 10px; /* Rely on body padding for header offset */
  padding-bottom: 40px;
  text-align: center;
  background-color: #f5f5f5;
  border-bottom: 1px solid #e0e0e0;
}

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

.page-blog__main-title {
  font-size: clamp(2em, 3.5vw, 3.2em); /* Responsive H1 font size */
  color: #017439;
  margin-bottom: 20px;
  line-height: 1.2;
  font-weight: bold;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}

.page-blog__intro-text {
  font-size: 1.1em;
  margin-bottom: 30px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-blog__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.page-blog__btn {
  display: inline-block;
  padding: 12px 25px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.2s ease;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-blog__btn-primary {
  background-color: #017439;
  color: #ffffff;
  border: 2px solid #017439;
}

.page-blog__btn-primary:hover {
  background-color: #005f2f;
  transform: translateY(-2px);
}

.page-blog__btn-secondary {
  background-color: #ffffff;
  color: #017439;
  border: 2px solid #017439;
}

.page-blog__btn-secondary:hover {
  background-color: #f0f0f0;
  transform: translateY(-2px);
}

.page-blog__article-wrap {
  max-width: 900px;
  margin: 40px auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-blog__section {
  margin-bottom: 40px;
  padding: 20px;
  background-color: #ffffff;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.page-blog__section-title {
  font-size: clamp(1.8em, 2.8vw, 2.5em);
  color: #017439;
  margin-bottom: 25px;
  text-align: left;
  border-bottom: 2px solid #e0e0e0;
  padding-bottom: 10px;
}

.page-blog__sub-title {
  font-size: clamp(1.4em, 2.2vw, 1.8em);
  color: #017439;
  margin-top: 30px;
  margin-bottom: 15px;
}

.page-blog p {
  margin-bottom: 15px;
  line-height: 1.7;
  font-size: 1em;
}

.page-blog p a {
  color: #017439;
  text-decoration: underline;
}

.page-blog p a:hover {
  color: #005f2f;
}

.page-blog__figure {
  margin: 30px 0;
  text-align: center;
}

.page-blog__image {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  margin: 0 auto;
}

.page-blog__figcaption {
  font-style: italic;
  color: #666666;
  margin-top: 10px;
  font-size: 0.9em;
}

.page-blog__benefit-list,
.page-blog__step-list {
  list-style-type: none;
  padding: 0;
  margin-bottom: 20px;
}

.page-blog__benefit-item,
.page-blog__step-item {
  background-color: #f9f9f9;
  border-left: 4px solid #017439;
  padding: 15px 20px;
  margin-bottom: 10px;
  border-radius: 5px;
  line-height: 1.6;
}

.page-blog__benefit-item strong,
.page-blog__step-item strong {
  color: #017439;
}

.page-blog__step-list .page-blog__step-item {
  counter-increment: step-counter;
  position: relative;
  padding-left: 50px;
}

.page-blog__step-list .page-blog__step-item::before {
  content: "Bước " counter(step-counter);
  position: absolute;
  left: 15px;
  top: 15px;
  background-color: #017439;
  color: #ffffff;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 0.9em;
}

.page-blog__cta-buttons--bottom {
  margin-top: 40px;
}

.page-blog__faq-section {
  margin-top: 50px;
}

.page-blog__faq-item {
  margin-bottom: 15px;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  overflow: hidden;
}

.page-blog__faq-question {
  background-color: #017439;
  color: #ffffff;
  padding: 15px 20px;
  cursor: pointer;
  margin: 0;
  font-size: 1.1em;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.page-blog__faq-answer {
  padding: 15px 20px;
  background-color: #f9f9f9;
  border-top: 1px solid #e0e0e0;
  display: none; /* Initially hidden, JS will toggle */
}

.page-blog__faq-item.active .page-blog__faq-answer {
  display: block;
}

.page-blog__faq-question::after {
  content: '+';
  font-weight: bold;
  font-size: 1.2em;
  transition: transform 0.3s ease;
}

.page-blog__faq-item.active .page-blog__faq-question::after {
  content: '-';
  transform: rotate(180deg);
}

.page-blog__conclusion-section {
  padding: 50px 0;
  background-color: #017439;
  color: #ffffff;
  text-align: center;
  border-top: 1px solid #005f2f;
}

.page-blog__conclusion-section .page-blog__section-title {
  color: #ffffff;
  border-bottom-color: #ffffff;
}

.page-blog__conclusion-text {
  font-size: 1.15em;
  max-width: 900px;
  margin: 0 auto 30px auto;
}

.page-blog__conclusion-text a {
  color: #FFFF00; /* Yellow for links in dark background */
  text-decoration: underline;
}

.page-blog__conclusion-text a:hover {
  color: #fff;
}

/* --- Responsive Styles --- */
@media (max-width: 1024px) {
  .page-blog__main-title {
    font-size: clamp(2em, 4vw, 3em);
  }
  .page-blog__section-title {
    font-size: clamp(1.6em, 3vw, 2.2em);
  }
}

@media (max-width: 768px) {
  /* 1. 顶区标题 + 双 CTA */
  .page-blog__top-section {
    padding-top: 10px !important; /* Specific mobile top padding */
    padding-bottom: 30px;
  }
  .page-blog__container {
    padding: 0 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-blog__main-title {
    font-size: 2.2em !important;
    margin-bottom: 15px;
  }
  .page-blog__intro-text {
    font-size: 1em;
    margin-bottom: 20px;
  }
  .page-blog__cta-buttons {
    flex-direction: column !important;
    gap: 10px;
    padding: 0 15px;
  }
  .page-blog__btn {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 15px !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  /* 2. 单栏长文容器 */
  .page-blog__article-wrap {
    margin: 30px auto !important;
    padding: 0 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-blog__section {
    padding: 15px !important;
    margin-bottom: 30px !important;
  }
  .page-blog__section-title {
    font-size: 1.8em !important;
    margin-bottom: 20px !important;
  }
  .page-blog__sub-title {
    font-size: 1.3em !important;
    margin-top: 25px !important;
    margin-bottom: 10px !important;
  }
  .page-blog p {
    font-size: 0.95em !important;
    margin-bottom: 12px !important;
  }

  /* 3. 通用图片与 figure */
  .page-blog img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-blog__figure {
    margin: 20px 0 !important;
  }
  .page-blog__figcaption {
    font-size: 0.85em !important;
  }

  /* 4. 按钮与按钮容器 (already covered in top-section and general .page-blog__btn) */
  .page-blog__cta-buttons--bottom {
    margin-top: 30px !important;
    padding: 0 15px !important;
  }

  /* 5. 注册教程与 FAQ 区块 */
  .page-blog__benefit-item,
  .page-blog__step-item {
    padding: 12px 15px !important;
    font-size: 0.95em !important;
  }
  .page-blog__step-list .page-blog__step-item {
    padding-left: 45px !important;
  }
  .page-blog__step-list .page-blog__step-item::before {
    width: 28px !important;
    height: 28px !important;
    font-size: 0.8em !important;
    left: 10px !important;
    top: 12px !important;
  }
  .page-blog__faq-section {
    margin-top: 40px !important;
  }
  .page-blog__faq-question {
    font-size: 1em !important;
    padding: 12px 15px !important;
  }
  .page-blog__faq-answer {
    padding: 12px 15px !important;
  }

  .page-blog__conclusion-section {
    padding: 40px 15px !important;
  }
  .page-blog__conclusion-text {
    font-size: 1em !important;
    margin-bottom: 25px !important;
  }
}