.page-faq {
  background: var(--paper);
}

/* ===== 英雄区 ===== */
.page-faq .faq-hero {
  background: var(--ink);
  color: var(--paper);
  padding: calc(var(--header-h) + 48px) 0 56px;
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -60px;
  top: 40px;
  width: 260px;
  height: 260px;
  background: rgba(45, 108, 223, 0.3);
  border-radius: 42% 58% 70% 30% / 45% 45% 55% 55%;
  transform: rotate(15deg);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 8px;
  background: linear-gradient(135deg, var(--orange) 50%, var(--blue) 50%);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-faq .faq-hero__mono {
  color: var(--orange);
  margin-bottom: 16px;
}

.page-faq .faq-hero__title {
  margin-bottom: 16px;
}

.page-faq .faq-hero__lead {
  max-width: 520px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--paper);
  opacity: 0.85;
  margin-bottom: 24px;
}

.page-faq .faq-hero__media {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
  aspect-ratio: 16 / 6;
}

.page-faq .faq-hero__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-h) + 72px) 0 80px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
    gap: 48px;
  }

  .page-faq .faq-hero__lead {
    font-size: 18px;
    margin-bottom: 0;
  }
}

/* ===== 面包屑 ===== */
.page-faq .faq-breadcrumb {
  background: var(--paper);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}

.page-faq .faq-breadcrumb .breadcrumb {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gray);
  margin: 0;
  padding: 0;
}

.page-faq .faq-breadcrumb .breadcrumb a {
  color: var(--gray);
  text-decoration: none;
}

.page-faq .faq-breadcrumb .breadcrumb a:hover,
.page-faq .faq-breadcrumb .breadcrumb a:focus-visible {
  color: var(--blue);
}

.page-faq .faq-breadcrumb .breadcrumb__sep {
  color: var(--border);
}

.page-faq .faq-breadcrumb .breadcrumb__item[aria-current="page"] {
  color: var(--ink);
}

/* ===== 主体两栏布局 ===== */
.page-faq .faq-layout {
  padding-top: 56px;
  padding-bottom: 72px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 56px;
    padding-top: 72px;
    padding-bottom: 96px;
  }
}

/* ===== 左侧目录索引 ===== */
.page-faq .faq-index {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  align-self: start;
}

.page-faq .faq-index__label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gray);
  letter-spacing: 0.08em;
  margin: 0 0 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.page-faq .faq-index__nav {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 4px 16px;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--blue);
  min-width: 28px;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--blue);
  border-bottom-color: var(--blue);
}

@media (min-width: 960px) {
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-index__nav {
    flex-direction: column;
    gap: 0;
  }

  .page-faq .faq-index__link {
    display: flex;
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
  }

  .page-faq .faq-index__link:last-child {
    border-bottom: none;
  }
}

/* ===== 右侧问答区域 ===== */
.page-faq .faq-content {
  min-width: 0;
}

.page-faq .faq-category {
  --cat-color: var(--blue);
  scroll-margin-top: calc(var(--header-h) + 24px);
  margin-bottom: 56px;
}

.page-faq .faq-category:nth-child(2) {
  --cat-color: var(--orange);
}

.page-faq .faq-category:nth-child(3) {
  --cat-color: var(--green);
}

.page-faq .faq-category:nth-child(4) {
  --cat-color: var(--red);
}

.page-faq .faq-category:target .faq-category__head {
  outline: 2px solid var(--cat-color);
  outline-offset: 6px;
  border-radius: var(--radius-sm);
}

.page-faq .faq-category__head {
  border-left: 4px solid var(--cat-color);
  padding-left: 20px;
  margin-bottom: 24px;
}

.page-faq .faq-category__tag {
  color: var(--cat-color);
  margin-bottom: 8px;
}

.page-faq .faq-category__title {
  font-size: 28px;
  margin-bottom: 8px;
}

.page-faq .faq-category__desc {
  color: var(--gray);
  font-size: 14px;
  margin: 0;
}

/* ===== 折叠面板 ===== */
.page-faq .faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-left: 4px solid var(--cat-color);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  transition: box-shadow var(--dur) var(--ease);
}

.page-faq .faq-item[open] {
  box-shadow: 0 6px 20px rgba(30, 42, 54, 0.08);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.5;
  -webkit-tap-highlight-color: transparent;
}

.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 400;
  line-height: 1;
  color: var(--cat-color);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(45deg);
}

.page-faq .faq-item__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--cat-color);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 12px;
}

.page-faq .faq-item__a {
  padding: 4px 20px 20px 64px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--gray);
}

.page-faq .faq-item__a p {
  margin: 0 0 8px;
}

.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}

@media (prefers-reduced-motion: no-preference) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: faqAnswerIn 0.25s var(--ease);
  }

  @keyframes faqAnswerIn {
    from {
      opacity: 0;
      transform: translateY(-6px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

/* ===== 更多帮助 ===== */
.page-faq .faq-more {
  scroll-margin-top: calc(var(--header-h) + 24px);
  background: var(--light-blue);
  padding: 56px 0 72px;
}

.page-faq .faq-more__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

.page-faq .faq-more__title {
  font-size: 28px;
  margin-bottom: 12px;
}

.page-faq .faq-more__text p {
  color: var(--gray);
  line-height: 1.7;
  max-width: 480px;
}

.page-faq .faq-more__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-more__media {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 12px 28px rgba(30, 42, 54, 0.12);
  aspect-ratio: 2 / 1;
}

.page-faq .faq-more__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 960px) {
  .page-faq .faq-more {
    padding: 72px 0 96px;
  }

  .page-faq .faq-more__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr);
    gap: 56px;
  }
}