.page-faq {
  --faq-text-muted: #a9b2c4;
  --faq-answer-ink: #d5dbe8;
  --faq-line-soft: rgba(122, 107, 82, 0.45);
  background: var(--dark-void);
  color: var(--faq-text-muted);
}

/* ===== Hero 首屏区 ===== */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--faq-line-soft);
  background:
    repeating-linear-gradient(-45deg, rgba(122, 107, 82, 0.05) 0 1px, transparent 1px 16px),
    radial-gradient(circle at 82% 16%, rgba(0, 212, 255, 0.07), transparent 40%);
}

.page-faq .faq-hero-inner {
  max-width: 1120px;
  margin-inline: auto;
  padding: 2.5rem 1.25rem 2.75rem;
  position: relative;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--desert-gold) 0 36%, var(--electric-blue) 36% 56%, transparent 56%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -4rem;
  top: -4rem;
  width: 18rem;
  height: 18rem;
  border-radius: 50%;
  border: 1.5rem solid rgba(212, 167, 74, 0.08);
  pointer-events: none;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 1.75rem;
}

.page-faq .faq-eyebrow {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--desert-gold);
  margin-bottom: 0.85rem;
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 2.3rem + 1vw, 3.1rem);
  line-height: 1.16;
  margin: 0 0 1.1rem;
  color: var(--sand-dune);
  max-width: 14em;
  text-wrap: balance;
}

.page-faq .faq-hero h1::after {
  content: "";
  display: block;
  width: 74px;
  height: 6px;
  margin-top: 0.85rem;
  background: linear-gradient(90deg, var(--desert-gold), var(--electric-blue));
  clip-path: polygon(0 0, 100% 0, 84% 100%, 0 100%);
}

.page-faq .faq-lead {
  max-width: 44em;
  color: var(--faq-text-muted);
  font-size: 1rem;
  line-height: 1.8;
  margin: 0;
}

/* ===== 整体布局 ===== */
.page-faq .faq-layout {
  max-width: 1120px;
  margin-inline: auto;
  padding: 2.75rem 1.25rem 3.5rem;
}

.page-faq .faq-main {
  min-width: 0;
}

/* ===== 编号章节 ===== */
.page-faq .faq-chapter {
  scroll-margin-top: 2rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-main .faq-chapter:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-faq .faq-chapter-head {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.page-faq .faq-chapter-head .section-index {
  font-family: var(--font-num);
  font-size: 3.2rem;
  line-height: 0.85;
  color: var(--desert-gold);
  font-weight: 700;
  min-width: 2.4ch;
}

.page-faq .faq-chapter-head .section-title {
  font-family: var(--font-head);
  font-size: 1.5rem;
  color: var(--sand-dune);
  margin: 0 0 0.3rem;
  line-height: 1.2;
}

.page-faq .faq-chapter-head .section-desc {
  font-size: 0.92rem;
  color: var(--faq-text-muted);
  line-height: 1.65;
  margin: 0;
}

/* ===== 章节配图 ===== */
.page-faq .faq-figure {
  margin: 0 0 1.25rem;
  border: 1px solid var(--faq-line-soft);
  border-radius: var(--radius);
  background: var(--rock-gray);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 0.55rem 0.9rem;
  font-size: 0.78rem;
  color: #8d95a7;
  border-top: 1px solid var(--faq-line-soft);
}

/* ===== 折叠面板 ===== */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-line-soft);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.015);
  overflow: hidden;
  transition: border-color 0.28s ease, background 0.28s ease;
}

.page-faq .faq-item[open] {
  border-color: rgba(0, 212, 255, 0.5);
}

.page-faq .faq-question {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1.05rem 1rem;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--sand-dune);
}

.page-faq .faq-question::-webkit-details-marker,
.page-faq .faq-question::marker {
  display: none;
  content: "";
}

.page-faq .faq-qnum {
  flex: 0 0 2rem;
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--desert-gold);
  color: #ffffff;
  font-family: var(--font-num);
  font-size: 0.92rem;
  font-weight: 700;
  border-radius: 6px;
  transform: skewX(-4deg);
}

.page-faq .faq-question::after {
  content: "";
  margin-left: auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--electric-blue);
  border-bottom: 2px solid var(--electric-blue);
  transform: rotate(45deg);
  opacity: 0.35;
  flex-shrink: 0;
  transition: transform 0.32s ease, opacity 0.2s ease;
}

.page-faq .faq-question:hover::after,
.page-faq .faq-item[open] .faq-question::after {
  opacity: 1;
}

.page-faq .faq-item[open] .faq-question::after {
  transform: rotate(225deg);
}

.page-faq .faq-answer {
  max-height: 0;
  overflow: hidden;
  background: var(--rock-gray);
  border-left: 4px solid var(--electric-blue);
  padding: 0.9rem 1rem 0.9rem 0.9rem;
  opacity: 0;
  transition: max-height 0.42s ease, opacity 0.28s ease;
}

.page-faq .faq-item[open] .faq-answer {
  max-height: 340px;
  opacity: 1;
}

.page-faq .faq-answer p {
  margin: 0;
  color: var(--faq-answer-ink);
  font-size: 0.95rem;
  line-height: 1.7;
}

.page-faq .faq-question:focus-visible {
  outline: 2px solid var(--electric-blue);
  outline-offset: -2px;
  border-radius: var(--radius);
}

/* ===== 章节跳转链接 ===== */
.page-faq .faq-chapter-cta {
  margin-top: 1rem;
}

.page-faq .faq-chapter-cta a {
  color: var(--electric-blue);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px solid rgba(0, 212, 255, 0.35);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}

.page-faq .faq-chapter-cta a:hover {
  color: var(--desert-gold);
  border-color: var(--desert-gold);
}

/* ===== 侧边目录 ===== */
.page-faq .faq-rail {
  margin-top: 3rem;
}

.page-faq .faq-rail-inner {
  background: var(--rock-gray);
  border: 1px solid var(--faq-line-soft);
  border-radius: var(--radius);
  padding: 1.4rem 1.2rem 1.6rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.page-faq .faq-rail-title {
  font-family: var(--font-head);
  font-size: 1.05rem;
  color: var(--sand-dune);
  margin: 0 0 1rem;
}

.page-faq .faq-rail-list {
  list-style: none;
  margin: 0 0 1.2rem;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-faq .faq-rail-list a {
  display: block;
  padding: 0.6rem 0.75rem;
  color: #aab3c4;
  text-decoration: none;
  border-left: 3px solid var(--mountain-line);
  font-size: 0.92rem;
  line-height: 1.4;
  transition: color 0.2s, border-color 0.2s;
}

.page-faq .faq-rail-list a:hover {
  color: var(--electric-blue);
  border-left-color: var(--electric-blue);
}

.page-faq .faq-rail-note {
  margin: 0 0 1.1rem;
  font-size: 0.87rem;
  line-height: 1.7;
  color: var(--faq-text-muted);
}

.page-faq .faq-rail .btn {
  width: 100%;
  justify-content: center;
}

/* ===== 悬浮邮件客服按钮 ===== */
.page-faq .faq-fab {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 900;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 1.25rem;
  border-radius: 999px;
  background: var(--desert-gold);
  color: #17130a;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.page-faq .faq-fab:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
}

.page-faq .faq-fab svg {
  flex: 0 0 auto;
}

/* ===== 桌面端 ===== */
@media (min-width: 1080px) {

  .page-faq .faq-hero-inner {
    padding: 4rem 1.5rem 3.5rem;
  }

  .page-faq .faq-hero h1 {
    max-width: 18em;
  }

  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 2.75rem;
    align-items: start;
    padding: 4rem 1.5rem 5rem;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 2rem;
    margin-top: 0;
  }

  .page-faq .faq-chapter-head .section-title {
    font-size: 1.8rem;
  }

  .page-faq .faq-chapter-head .section-index {
    font-size: 4rem;
  }
}