/* ===== 帮助中心专属样式 (作用域 .page-faq) ===== */
.page-faq {
  --faq-section-gap: var(--spacing-xl, 64px);
  --faq-card-bg: var(--color-bg-card, rgba(10, 31, 63, 0.8));
  --faq-border-color: rgba(212, 175, 55, 0.25);
  --faq-border-hover: var(--color-accent1, #D4AF37);
  --faq-number-size: 4rem;
  --faq-hero-padding: var(--spacing-lg, 32px) 0 var(--spacing-xl, 64px);
  --faq-section-body-gap: var(--spacing-lg, 32px);
}

/* 移动端优先 — 单列布局 */
.page-faq .container {
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  padding: 0 var(--spacing-md, 16px);
}

/* 面包屑 */
.page-faq .breadcrumb-wrapper {
  padding-top: calc(var(--header-height, 72px) + var(--spacing-md, 16px));
  margin-bottom: var(--spacing-sm, 8px);
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm, 8px);
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono, monospace);
  font-size: 0.8125rem;
  color: var(--color-text-secondary, #B0C4DE);
}

.page-faq .breadcrumb li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm, 8px);
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  color: var(--color-accent1, #D4AF37);
  opacity: 0.6;
}

.page-faq .breadcrumb a {
  color: var(--color-text-secondary, #B0C4DE);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-faq .breadcrumb a:hover {
  color: var(--color-accent1, #D4AF37);
}

.page-faq .breadcrumb li[aria-current="page"] {
  color: var(--color-text-primary, #FFFFFF);
  opacity: 0.8;
}

/* 英雄区 */
.page-faq__hero {
  padding: var(--faq-hero-padding);
  border-bottom: 1px solid var(--faq-border-color);
  margin-bottom: var(--spacing-lg, 32px);
}

.page-faq__hero-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-text-primary, #FFFFFF);
  margin: 0 0 var(--spacing-sm, 8px);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.page-faq__hero-subtitle {
  font-size: 1.0625rem;
  color: var(--color-text-secondary, #B0C4DE);
  margin: 0;
  max-width: 640px;
  line-height: 1.6;
}

/* 每个区域 */
.page-faq__section {
  margin-bottom: var(--faq-section-gap);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg, 32px);
  padding-top: var(--spacing-lg, 32px);
}

.page-faq__section + .page-faq__section {
  border-top: 1px solid var(--faq-border-color);
  padding-top: var(--spacing-xl, 64px);
}

/* 区域标题区 */
.page-faq__section-header {
  flex: 0 0 auto;
}

.page-faq__section-number {
  display: block;
  font-family: var(--font-mono, monospace);
  font-size: var(--faq-number-size);
  font-weight: 700;
  color: var(--color-accent1, #D4AF37);
  line-height: 1;
  opacity: 0.7;
  margin-bottom: var(--spacing-xs, 4px);
}

.page-faq__section-heading {
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--color-text-primary, #FFFFFF);
  margin: 0 0 var(--spacing-sm, 8px);
  line-height: 1.2;
}

.page-faq__section-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary, #B0C4DE);
  margin: 0;
  line-height: 1.5;
  max-width: 280px;
}

/* 区域内容体 */
.page-faq__section-body {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: var(--faq-section-body-gap);
}

/* 图片 */
.page-faq__figure {
  margin: 0;
  border-radius: 8px;
  overflow: hidden;
  background: var(--faq-card-bg);
  border: 1px solid var(--faq-border-color);
  transition: border-color 0.3s ease;
}

.page-faq__figure:hover {
  border-color: var(--faq-border-hover);
}

.page-faq__figure-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: attr(width) / attr(height);
}

/* 问答列表 */
.page-faq__faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md, 16px);
}

/* 单个问答项 (details) */
.page-faq__faq-item {
  background: var(--faq-card-bg);
  border: 1px solid var(--faq-border-color);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-faq__faq-item:hover {
  border-color: var(--faq-border-hover);
}

.page-faq__faq-item[open] {
  border-color: var(--faq-border-hover);
  box-shadow: 0 4px 20px rgba(212, 175, 55, 0.08);
}

/* 问题 (summary) */
.page-faq__faq-question {
  display: flex;
  align-items: center;
  gap: var(--spacing-md, 16px);
  padding: var(--spacing-md, 16px) var(--spacing-lg, 32px);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background 0.2s ease;
}

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

.page-faq__faq-question:hover {
  background: rgba(212, 175, 55, 0.04);
}

.page-faq__faq-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: 1.5px solid var(--color-accent1, #D4AF37);
  border-radius: 50%;
  font-family: var(--font-mono, monospace);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-accent1, #D4AF37);
  background: transparent;
  transition: background 0.25s ease, color 0.25s ease;
}

.page-faq__faq-item[open] .page-faq__faq-icon {
  background: var(--color-accent1, #D4AF37);
  color: var(--color-primary, #0A1F3F);
}

.page-faq__faq-qtext {
  flex: 1 1 auto;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary, #FFFFFF);
  line-height: 1.4;
}

.page-faq__faq-arrow {
  flex-shrink: 0;
  width: 12px;
  height: 12px;
  border-right: 2px solid var(--color-accent2, #39FF14);
  border-bottom: 2px solid var(--color-accent2, #39FF14);
  transform: rotate(45deg);
  transition: transform 0.3s ease;
  opacity: 0.7;
}

.page-faq__faq-item[open] .page-faq__faq-arrow {
  transform: rotate(-135deg);
  opacity: 1;
}

/* 答案 */
.page-faq__faq-answer {
  padding: 0 var(--spacing-lg, 32px) var(--spacing-lg, 32px) calc(var(--spacing-lg, 32px) + 28px + var(--spacing-md, 16px));
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-secondary, #B0C4DE);
}

.page-faq__faq-answer p {
  margin: 0 0 var(--spacing-sm, 8px);
}

.page-faq__faq-answer p:last-child {
  margin-bottom: 0;
}

.page-faq__faq-answer a {
  color: var(--color-link, #39FF14);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity 0.2s ease;
}

.page-faq__faq-answer a:hover {
  opacity: 0.8;
}

/* 底部帮助区 */
.page-faq__help-footer {
  margin-top: var(--spacing-xl, 64px);
  padding: var(--spacing-xl, 64px) 0;
  border-top: 1px solid var(--faq-border-color);
}

.page-faq__help-footer-inner {
  text-align: center;
  max-width: 520px;
  margin: 0 auto;
}

.page-faq__help-footer-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary, #FFFFFF);
  margin: 0 0 var(--spacing-sm, 8px);
}

.page-faq__help-footer-text {
  font-size: 1rem;
  color: var(--color-text-secondary, #B0C4DE);
  margin: 0 0 var(--spacing-lg, 32px);
  line-height: 1.6;
}

.page-faq__help-footer .btn--primary {
  display: inline-block;
  padding: 12px 36px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary, #0A1F3F);
  background: var(--color-accent1, #D4AF37);
  border: none;
  border-radius: 4px;
  text-decoration: none;
  transition: opacity 0.25s ease, transform 0.2s ease;
  cursor: pointer;
}

.page-faq__help-footer .btn--primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* ===== 桌面端 (≥768px) ===== */
@media (min-width: 768px) {
  .page-faq .container {
    padding: 0 var(--spacing-lg, 32px);
  }

  .page-faq__hero {
    padding: var(--spacing-xl, 64px) 0 var(--spacing-xl, 64px);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .page-faq__hero-title {
    font-size: 3.25rem;
  }

  .page-faq__hero-subtitle {
    font-size: 1.125rem;
  }

  /* 区域改为两栏 */
  .page-faq__section {
    flex-direction: row;
    gap: var(--spacing-xl, 64px);
  }

  .page-faq__section-header {
    width: 280px;
    flex-shrink: 0;
    position: relative;
    padding-top: 0;
  }

  .page-faq__section-number {
    font-size: 5rem;
    margin-bottom: var(--spacing-sm, 8px);
  }

  .page-faq__section-heading {
    font-size: 1.875rem;
  }

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

  .page-faq__section-body {
    flex: 1 1 auto;
    min-width: 0;
    gap: var(--spacing-lg, 32px);
  }

  /* 图片自适应 */
  .page-faq__figure {
    max-width: 100%;
  }

  .page-faq__figure-img {
    max-height: 320px;
    object-position: left top;
  }

  /* 问答内边距微调 */
  .page-faq__faq-question {
    padding: var(--spacing-md, 16px) var(--spacing-lg, 32px);
  }

  .page-faq__faq-answer {
    padding-right: var(--spacing-xl, 64px);
  }

  .page-faq__help-footer {
    padding: var(--spacing-xl, 64px) 0;
  }

  .page-faq__help-footer-title {
    font-size: 1.75rem;
  }
}

/* ===== 大桌面 (≥1024px) 微调 ===== */
@media (min-width: 1024px) {
  .page-faq__hero-title {
    font-size: 3.75rem;
  }

  .page-faq__section-header {
    width: 320px;
  }

  .page-faq__section-number {
    font-size: 6rem;
  }

  .page-faq__section-heading {
    font-size: 2.125rem;
  }

  .page-faq__figure-img {
    max-height: 360px;
  }
}