/* ===== 帮助中心专属样式 (page-faq) ===== */

/* 作用域容器 */
.page-faq {
  --faq-hero-bg: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  --faq-card-bg: var(--color-white);
  --faq-card-radius: var(--border-radius-md);
  --faq-sidebar-width: 240px;
  --faq-gap: 2rem;
}

/* ---- 面包屑 ---- */
.page-faq .faq-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  padding-top: 1rem;
  padding-bottom: 0.4rem;
  font-size: 0.85rem;
  color: var(--color-text-light);
  background: transparent;
}
.page-faq .faq-breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity 0.2s;
}
.page-faq .faq-breadcrumb a:hover {
  opacity: 0.8;
}
.page-faq .faq-breadcrumb-sep {
  color: var(--color-text-light);
  opacity: 0.5;
}
.page-faq .faq-breadcrumb [aria-current="page"] {
  color: var(--color-text);
  font-weight: 500;
}

/* ---- 头部区域 ---- */
.page-faq .faq-hero {
  background: var(--faq-hero-bg);
  padding: 2.5rem 0 2.8rem;
  margin-bottom: 0;
  position: relative;
  overflow: hidden;
}
.page-faq .faq-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--stripe-height);
  background: repeating-linear-gradient(
    45deg,
    var(--color-accent) 0px,
    var(--color-accent) 12px,
    transparent 12px,
    transparent 24px
  );
  opacity: 0.3;
}
.page-faq .faq-hero-inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.page-faq .faq-hero-text {
  max-width: 680px;
}
.page-faq .faq-hero-title {
  font-family: var(--font-headline);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--color-white);
  margin: 0 0 0.5rem;
  line-height: 1.15;
}
.page-faq .faq-hero-desc {
  font-size: 1.05rem;
  color: var(--color-text-light);
  margin: 0;
  line-height: 1.5;
  max-width: 520px;
}
.page-faq .faq-search-wrapper {
  position: relative;
  max-width: 480px;
}
.page-faq .faq-search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-light);
  pointer-events: none;
}
.page-faq .faq-search-input {
  display: block;
  width: 100%;
  padding: 0.8rem 1rem 0.8rem 2.8rem;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.4;
  color: var(--color-text);
  background: var(--color-white);
  border: 2px solid transparent;
  border-radius: var(--border-radius-lg);
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
  box-shadow: 0 4px 14px rgba(0,0,0,0.08);
}
.page-faq .faq-search-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 4px 20px rgba(242,108,35,0.18);
}
.page-faq .faq-search-input::placeholder {
  color: var(--color-text-light);
  opacity: 0.7;
}

/* ---- 主体布局 ---- */
.page-faq .faq-body {
  display: flex;
  flex-direction: column;
  gap: var(--faq-gap);
  padding-top: 2.5rem;
  padding-bottom: 4rem;
}

/* ---- 侧边栏 ---- */
.page-faq .faq-sidebar {
  flex-shrink: 0;
  width: 100%;
}
.page-faq .faq-sidebar-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.page-faq .faq-sidebar-link {
  display: block;
  padding: 0.5rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  text-decoration: none;
  border: 1px solid rgba(0,0,0,0.06);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  white-space: nowrap;
}
.page-faq .faq-sidebar-link:hover,
.page-faq .faq-sidebar-link:focus {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}
.page-faq .faq-sidebar-helper {
  display: none;
  margin-top: 1.5rem;
  padding: 1rem 1.2rem;
  background: var(--color-white);
  border-radius: var(--border-radius-md);
  border: 1px solid rgba(0,0,0,0.04);
  font-size: 0.9rem;
  line-height: 1.5;
}
.page-faq .faq-sidebar-helper p {
  margin: 0;
}
.page-faq .faq-sidebar-cta {
  color: var(--color-accent);
  font-weight: 600;
  text-decoration: none;
}
.page-faq .faq-sidebar-cta:hover {
  text-decoration: underline;
}

/* ---- 内容区 ---- */
.page-faq .faq-content {
  flex: 1;
  min-width: 0;
}

/* ---- 每个分类区块 ---- */
.page-faq .faq-section {
  margin-bottom: 3rem;
  scroll-margin-top: 2rem;
}
.page-faq .faq-section-title {
  font-family: var(--font-headline);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 0.4rem;
  line-height: 1.2;
}
.page-faq .faq-section-desc {
  font-size: 1rem;
  color: var(--color-text);
  opacity: 0.75;
  margin: 0 0 1.4rem;
  line-height: 1.5;
  max-width: 600px;
}

/* ---- 区域图片 ---- */
.page-faq .faq-section-visual {
  margin-bottom: 1.4rem;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  background: var(--color-bg);
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}
.page-faq .faq-section-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 5 / 3;
}

/* ---- 问答项 ---- */
.page-faq .faq-items {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.page-faq .faq-item {
  background: var(--faq-card-bg);
  border-radius: var(--faq-card-radius);
  border: 1px solid rgba(0,0,0,0.04);
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
  transition: box-shadow 0.25s;
  overflow: hidden;
}
.page-faq .faq-item[open] {
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
.page-faq .faq-item.hidden {
  display: none;
}
.page-faq .faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1rem 1.2rem;
  cursor: pointer;
  user-select: none;
  list-style: none;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  transition: background 0.2s, color 0.2s;
}
.page-faq .faq-question::-webkit-details-marker {
  display: none;
}
.page-faq .faq-question:hover {
  background: rgba(242,108,35,0.04);
}
.page-faq .faq-item[open] .faq-question {
  color: var(--color-accent);
  background: rgba(242,108,35,0.04);
}
.page-faq .faq-question-text {
  flex: 1;
}
.page-faq .faq-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-bg);
  transition: background 0.25s, transform 0.3s;
}
.page-faq .faq-icon::before {
  content: '+';
  font-size: 1.3rem;
  font-weight: 300;
  line-height: 1;
  color: var(--color-accent);
  transition: transform 0.3s;
}
.page-faq .faq-item[open] .faq-icon {
  background: var(--color-accent);
}
.page-faq .faq-item[open] .faq-icon::before {
  content: '−';
  color: var(--color-white);
  transform: rotate(0deg);
}
.page-faq .faq-answer {
  padding: 0 1.2rem 1.2rem;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text);
  border-top: 1px solid rgba(0,0,0,0.04);
}
.page-faq .faq-answer p {
  margin: 0.8rem 0 0;
}
.page-faq .faq-answer a {
  color: var(--color-accent);
  text-decoration: underline;
  font-weight: 500;
}
.page-faq .faq-answer a:hover {
  color: var(--color-accent-hover);
}

/* ---- 底部引导 ---- */
.page-faq .faq-stuck {
  margin-top: 2.5rem;
  padding: 2rem;
  text-align: center;
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  border: 1px dashed var(--color-secondary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}
.page-faq .faq-stuck-text {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 0 0 1rem;
}
.page-faq .faq-stuck .btn-primary {
  display: inline-block;
  padding: 0.7rem 2rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  background: var(--color-accent);
  border: none;
  border-radius: var(--border-radius-lg);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.25s, transform 0.2s;
}
.page-faq .faq-stuck .btn-primary:hover {
  background: var(--color-accent-hover);
  transform: scale(1.02);
}

/* ---- 桌面布局 (≥768px) ---- */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 3.5rem 0 3.8rem;
  }
  .page-faq .faq-hero-title {
    font-size: 3rem;
  }
  .page-faq .faq-hero-desc {
    font-size: 1.1rem;
  }
  .page-faq .faq-hero-inner {
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
  }
  .page-faq .faq-search-wrapper {
    flex-shrink: 0;
    width: 360px;
    margin-top: 0.2rem;
  }
  .page-faq .faq-body {
    flex-direction: row;
    align-items: flex-start;
  }
  .page-faq .faq-sidebar {
    width: var(--faq-sidebar-width);
    position: sticky;
    top: 1.5rem;
    display: flex;
    flex-direction: column;
  }
  .page-faq .faq-sidebar-list {
    flex-direction: column;
    gap: 0.3rem;
  }
  .page-faq .faq-sidebar-link {
    padding: 0.6rem 1rem;
    white-space: normal;
    font-size: 0.95rem;
    border: none;
    background: transparent;
    border-radius: var(--border-radius-sm);
    color: var(--color-text);
    border-left: 3px solid transparent;
  }
  .page-faq .faq-sidebar-link:hover,
  .page-faq .faq-sidebar-link:focus {
    background: rgba(242,108,35,0.06);
    color: var(--color-accent);
    border-left-color: var(--color-accent);
  }
  .page-faq .faq-sidebar-helper {
    display: block;
  }
  .page-faq .faq-content {
    width: calc(100% - var(--faq-sidebar-width) - var(--faq-gap));
  }
  .page-faq .faq-section-title {
    font-size: 2rem;
  }
  .page-faq .faq-section-visual {
    max-width: 500px;
  }
  .page-faq .faq-question {
    padding: 1rem 1.4rem;
    font-size: 1.05rem;
  }
  .page-faq .faq-answer {
    padding: 0 1.4rem 1.4rem;
    font-size: 1rem;
  }
}

/* ---- 大桌面 (≥1024px) ---- */
@media (min-width: 1024px) {
  .page-faq .faq-hero-title {
    font-size: 3.2rem;
  }
  .page-faq .faq-search-wrapper {
    width: 400px;
  }
  .page-faq .faq-sidebar {
    width: 260px;
  }
  .page-faq .faq-content {
    width: calc(100% - 260px - var(--faq-gap));
  }
}

/* ---- 减少动效 (reduced motion) ---- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-icon::before,
  .page-faq .faq-item[open] .faq-icon::before {
    transition: none;
  }
  .page-faq .faq-search-input {
    transition: none;
  }
  .page-faq .faq-stuck .btn-primary {
    transition: none;
  }
  .page-faq .faq-section {
    scroll-margin-top: 0;
  }
}