/* Biến màu sắc */
:root {
  --primary-color: #FF8C1A;
  --secondary-color: #FFA53A;
  --bg-dark: #0D0E12;
  --card-bg: #17191F;
  --text-light: #FFF3E6;
  --border-color: #A84F0C;
  --glow-color: #FFB04D;
  --deep-orange: #D96800;
}

.page-faq {
  font-family: 'Arial', sans-serif;
  color: var(--text-light); /* Màu chữ chính cho nền tối */
  background-color: var(--bg-dark);
  line-height: 1.6;
}

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

.page-faq__hero-section {
  padding-top: 10px; /* Nhỏ hơn so với header-offset */
  padding-bottom: 40px;
  text-align: center;
  background-color: var(--bg-dark);
}

.page-faq__hero-image-wrapper {
  margin-bottom: 30px;
}

.page-faq__hero-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  object-fit: cover;
}

.page-faq__hero-content {
  max-width: 900px;
  margin: 0 auto;
}

.page-faq__main-title {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 20px;
  line-height: 1.2;
}

.page-faq__intro-text {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 30px;
}

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

.page-faq__btn-primary,
.page-faq__btn-secondary {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-faq__btn-primary {
  background: linear-gradient(180deg, var(--secondary-color) 0%, var(--deep-orange) 100%);
  color: #ffffff;
  border: none;
}

.page-faq__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.page-faq__btn-secondary {
  background: none;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.page-faq__btn-secondary:hover {
  background: var(--primary-color);
  color: #ffffff;
  transform: translateY(-2px);
}

.page-faq__faq-section {
  padding: 60px 0;
  background-color: var(--card-bg);
  border-top: 1px solid var(--border-color);
}

.page-faq__section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  color: var(--text-light);
  text-align: center;
  margin-bottom: 20px;
}

.page-faq__section-description {
  font-size: 1.1rem;
  color: var(--text-light);
  text-align: center;
  max-width: 800px;
  margin: 0 auto 40px;
}

.page-faq__faq-category {
  margin-bottom: 40px;
}

.page-faq__category-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 25px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border-color);
  text-align: left;
}

details.page-faq__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  background: var(--bg-dark);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

details.page-faq__faq-item summary.page-faq__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  color: var(--text-light);
  font-weight: 600;
}

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

details.page-faq__faq-item summary.page-faq__faq-question:hover {
  background: var(--deep-orange);
  border-color: var(--glow-color);
}

.page-faq__faq-qtext {
  flex: 1;
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
}

.page-faq__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  color: var(--primary-color);
  flex-shrink: 0;
  margin-left: 15px;
  width: 32px;
  text-align: center;
  line-height: 1;
}

details.page-faq__faq-item .page-faq__faq-answer {
  padding: 0 25px 25px;
  background: var(--card-bg);
  border-top: 1px solid var(--border-color);
  border-radius: 0 0 8px 8px;
  color: var(--text-light);
  font-size: 1rem;
}

.page-faq__cta-bottom {
  text-align: center;
  padding: 40px 0;
  background-color: var(--bg-dark);
  border-top: 1px solid var(--border-color);
  margin-top: 60px;
  border-radius: 10px;
}

.page-faq__cta-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  color: var(--text-light);
  margin-bottom: 20px;
}

.page-faq__cta-description {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 800px;
  margin: 0 auto 30px;
}

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

.page-faq__info-section {
  padding: 60px 0;
  background-color: var(--bg-dark);
}

.page-faq__article-body {
  max-width: 900px;
  margin: 0 auto;
  color: var(--text-light);
  font-size: 1.05rem;
  line-height: 1.7;
}

.page-faq__article-body h2, .page-faq__article-body h3 {
  color: var(--primary-color);
  margin-top: 30px;
  margin-bottom: 15px;
}

.page-faq__article-body p {
  margin-bottom: 15px;
}

.page-faq__article-figure {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  margin: 30px auto;
  max-width: 800px;
  object-fit: cover;
}

/* ==================================================================
   Responsive Styles (Mobile First - max-width: 768px)
   ================================================================== */
@media (max-width: 768px) {
  .page-faq__container {
    padding: 0 15px;
  }

  /* HERO 主图区域 */
  .page-faq__hero-section {
    padding-top: 10px;
    padding-bottom: 30px;
  }

  .page-faq__hero-image-wrapper {
    margin-bottom: 20px;
  }

  .page-faq__hero-image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    object-fit: contain !important; /* HERO 移动 object-fit:contain */
    aspect-ratio: unset !important;
  }

  .page-faq__main-title {
    font-size: clamp(1.8rem, 7vw, 2.5rem);
    margin-bottom: 15px;
  }

  .page-faq__intro-text {
    font-size: 1rem;
    margin-bottom: 25px;
  }

  .page-faq__hero-buttons,
  .page-faq__cta-buttons-bottom {
    flex-direction: column;
    gap: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* 按钮与按钮容器 */
  .page-faq__btn-primary,
  .page-faq__btn-secondary,
  .page-faq a[class*="button"],
  .page-faq a[class*="btn"] {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding: 12px 20px;
    font-size: 0.95rem;
  }

  /* 通用图片与容器 */
  .page-faq img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  .page-faq__section,
  .page-faq__card,
  .page-faq__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-faq__faq-section,
  .page-faq__info-section {
    padding: 40px 0;
  }

  .page-faq__section-title {
    font-size: clamp(1.5rem, 6vw, 2.2rem);
    margin-bottom: 15px;
  }

  .page-faq__section-description {
    font-size: 0.95rem;
    margin-bottom: 30px;
  }

  .page-faq__category-title {
    font-size: clamp(1.2rem, 5vw, 1.8rem);
    margin-bottom: 20px;
  }

  details.page-faq__faq-item summary.page-faq__faq-question {
    padding: 15px 20px;
  }

  .page-faq__faq-qtext {
    font-size: 1rem;
  }

  .page-faq__faq-toggle {
    font-size: 24px;
    width: 28px;
  }

  details.page-faq__faq-item .page-faq__faq-answer {
    padding: 0 20px 20px;
    font-size: 0.95rem;
  }

  .page-faq__cta-bottom {
    padding: 30px 0;
    margin-top: 40px;
  }

  .page-faq__cta-title {
    font-size: clamp(1.5rem, 6vw, 2.2rem);
    margin-bottom: 15px;
  }

  .page-faq__cta-description {
    font-size: 0.95rem;
    margin-bottom: 25px;
  }

  /* 装饰主标题 + 长文 SEO 区 */
  .page-faq__article-body {
    font-size: 1rem;
    padding: 0 10px;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-faq__article-figure {
    margin: 20px auto;
    max-width: 100% !important;
  }
}

/* @media (max-width: 1024px) for tablet */
@media (max-width: 1024px) {
  .page-faq__container {
    padding: 0 25px;
  }

  .page-faq__hero-content {
    max-width: 800px;
  }

  .page-faq__main-title {
    font-size: clamp(2rem, 3.8vw, 3.2rem);
  }

  .page-faq__intro-text {
    font-size: 1.05rem;
  }

  .page-faq__section-title {
    font-size: clamp(1.6rem, 3.2vw, 2.5rem);
  }

  .page-faq__section-description {
    font-size: 1rem;
  }

  .page-faq__category-title {
    font-size: clamp(1.4rem, 2.8vw, 2rem);
  }

  .page-faq__faq-qtext {
    font-size: 1.05rem;
  }

  .page-faq__faq-toggle {
    font-size: 26px;
    width: 30px;
  }

  .page-faq__faq-answer {
    font-size: 0.98rem;
  }

  .page-faq__cta-title {
    font-size: clamp(1.6rem, 3.2vw, 2.5rem);
  }

  .page-faq__cta-description {
    font-size: 1.05rem;
  }

  .page-faq__article-body {
    max-width: 800px;
    font-size: 1rem;
  }
}