.page-blog {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-main);
  background-color: var(--bg-color);
}

.page-blog__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 60px 20px;
  padding-top: 10px; /* body đã có padding-top từ header-offset */
  text-align: center;
  overflow: hidden;
}

.page-blog__hero-image-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
}

.page-blog__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.5); /* Giảm độ sáng ảnh nền để chữ dễ đọc */
}

.page-blog__hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  padding: 20px;
  color: var(--text-main);
}

.page-blog__main-title {
  font-weight: bold;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: var(--gold);
}

.page-blog__description {
  font-size: 1.15em;
  margin-bottom: 30px;
  color: var(--text-main);
}

.page-blog__cta-button {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: #FFFFFF;
  font-size: 1.1em;
  font-weight: bold;
  text-decoration: none;
  transition: background-color 0.3s ease;
  border: none;
  cursor: pointer;
}

.page-blog__cta-button:hover {
  background: linear-gradient(180deg, #13994A 0%, #2AD16F 100%);
}

.page-blog__cta-button--small {
  padding: 10px 20px;
  font-size: 0.9em;
}

.page-blog__cta-button--large {
  padding: 18px 35px;
  font-size: 1.2em;
}

.page-blog__section {
  padding: 80px 20px;
  text-align: center;
}

.page-blog__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.page-blog__section-title {
  font-size: 2.5em;
  color: var(--gold);
  margin-bottom: 40px;
  font-weight: bold;
}

.page-blog__text-block {
  font-size: 1.05em;
  margin-bottom: 30px;
  color: var(--text-secondary);
  text-align: left;
}

.page-blog__guide-step {
  background-color: var(--card-b-g);
  border-radius: 10px;
  padding: 30px;
  margin-bottom: 30px;
  text-align: left;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
}

.page-blog__step-title {
  font-size: 1.8em;
  color: var(--text-main);
  margin-bottom: 15px;
}

.page-blog__image-content {
  width: 100%;
  height: auto;
  border-radius: 8px;
  margin-top: 20px;
  object-fit: cover;
}

.page-blog__issues-section .page-blog__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-blog__issue-card {
  background-color: var(--card-b-g);
  border-radius: 10px;
  padding: 30px;
  text-align: left;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.page-blog__issue-title {
  font-size: 1.5em;
  color: var(--text-main);
  margin-bottom: 15px;
}

.page-blog__text-link {
  color: var(--glow);
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
}

.page-blog__text-link:hover {
  color: var(--gold);
}

.page-blog__security-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  text-align: left;
}

.page-blog__list-item {
  background-color: var(--card-b-g);
  border-radius: 10px;
  padding: 25px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.page-blog__list-title {
  font-size: 1.4em;
  color: var(--text-main);
  margin-bottom: 10px;
}

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

.page-blog__benefit-card {
  background-color: var(--card-b-g);
  border-radius: 10px;
  padding: 30px;
  text-align: left;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.page-blog__benefit-title {
  font-size: 1.6em;
  color: var(--text-main);
  margin-bottom: 15px;
}

.page-blog__faq-list {
  margin-top: 40px;
  text-align: left;
}

.page-blog__faq-item {
  background-color: var(--card-b-g);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.page-blog__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  cursor: pointer;
  font-size: 1.2em;
  font-weight: bold;
  color: var(--text-main);
  background-color: var(--card-b-g);
  list-style: none;
  -webkit-touch-callout: none; /* iOS Safari */
  -webkit-user-select: none;   /* Safari */
  -khtml-user-select: none;    /* Konqueror HTML */
  -moz-user-select: none;      /* Old versions of Firefox */
  -ms-user-select: none;       /* Internet Explorer/Edge */
  user-select: none;           /* Non-prefixed version, currently supported by Chrome, Edge, Opera and Firefox */
}

.page-blog__faq-question::-webkit-details-marker {
  display: none;
}

.page-blog__faq-qtext {
  flex-grow: 1;
}

.page-blog__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 15px;
  color: var(--gold);
  transition: transform 0.3s ease;
}

.page-blog__faq-item[open] .page-blog__faq-toggle {
  transform: rotate(45deg);
}

.page-blog__faq-answer {
  padding: 0 25px 20px;
  font-size: 1em;
  color: var(--text-secondary);
  text-align: left;
}

.page-blog__faq-answer p {
  margin-bottom: 15px;
}

.page-blog__conclusion-section {
  background-color: var(--deep-green);
  color: var(--text-main);
}

/* Color Contrast Adjustments */
.page-blog__dark-bg {
  background-color: var(--bg-color);
  color: var(--text-main);
}

.page-blog__card-bg {
  background-color: var(--background);
  color: var(--text-main);
}

/* Responsive styles */
@media (max-width: 1024px) {
  .page-blog__main-title {
    font-size: 2.8em;
  }
  .page-blog__section-title {
    font-size: 2em;
  }
}

@media (max-width: 768px) {
  .page-blog {
    font-size: 16px;
    line-height: 1.6;
  }
  .page-blog__hero-section {
    padding: 40px 15px;
    padding-top: 10px !important;
  }
  .page-blog__hero-content {
    padding: 15px;
  }
  .page-blog__main-title {
    font-size: 2.2em;
  }
  .page-blog__description {
    font-size: 1em;
  }
  .page-blog__cta-button {
    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;
    margin-bottom: 10px;
  }
  .page-blog__cta-button--small, .page-blog__cta-button--large {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-blog__section {
    padding: 40px 15px;
  }
  .page-blog__container {
    padding: 0 10px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-blog__section-title {
    font-size: 1.8em;
    margin-bottom: 30px;
  }
  .page-blog__guide-step, .page-blog__issue-card, .page-blog__list-item, .page-blog__benefit-card {
    padding: 20px;
    margin-bottom: 20px;
  }
  .page-blog__step-title, .page-blog__issue-title, .page-blog__list-title, .page-blog__benefit-title {
    font-size: 1.3em;
  }
  .page-blog__issues-section .page-blog__container,
  .page-blog__security-list,
  .page-blog__benefits-section .page-blog__container {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-blog img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-blog__video-section,
  .page-blog__video-container,
  .page-blog__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }
  .page-blog__faq-question {
    font-size: 1.1em;
    padding: 15px 20px;
  }
  .page-blog__faq-answer {
    padding: 0 20px 15px;
  }
}

@media (max-width: 480px) {
  .page-blog__main-title {
    font-size: 1.8em;
  }
  .page-blog__description {
    font-size: 0.95em;
  }
  .page-blog__section-title {
    font-size: 1.6em;
  }
  .page-blog__text-block {
    font-size: 0.95em;
  }
  .page-blog__cta-button {
    font-size: 1em;
  }
}