.page-faq {
  --faq-rail: 272px;
  --faq-stick: 108px;
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-faq .breadcrumb {
  margin-top: clamp(14px, 2.5vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
  padding-top: clamp(20px, 3.5vw, 40px);
}

.page-faq .faq-hero-copy .eyebrow {
  margin: 0 0 12px;
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(30px, 6vw, 58px);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-hero .lead {
  margin: 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--text-muted);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero-figure {
  margin: 0;
}

.page-faq .faq-hero-figure .media-frame {
  border: 1px solid var(--line);
}

/* ---------- 数据带 ---------- */
.page-faq .faq-ticker {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(28px, 4.5vw, 52px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-ticker-item {
  display: block;
  background: var(--ink-850);
  padding: 14px 16px;
  font-family: var(--font-data);
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.12em;
  color: var(--text-faint);
}

.page-faq .faq-ticker-item strong {
  display: block;
  margin-top: 5px;
  font-family: var(--font-data);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
  margin-top: clamp(36px, 5.5vw, 68px);
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  background: var(--ink-850);
  border: 1px solid var(--line);
  padding: 20px 16px;
}

.page-faq .faq-index-title {
  margin: 0 0 14px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-faint);
}

.page-faq .faq-index-list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index-link {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-muted);
  text-decoration: none;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-index-num {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  transition: color 0.2s var(--ease);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  background: var(--ink-700);
  color: var(--text);
  border-left-color: var(--cyan);
  outline: none;
}

.page-faq .faq-index-link:hover .faq-index-num,
.page-faq .faq-index-link:focus-visible .faq-index-num {
  color: var(--cyan);
}

.page-faq .faq-index-note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-faint);
}

.page-faq .faq-index-note a {
  color: var(--cyan-dim);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-faq .faq-index-note a:hover,
.page-faq .faq-index-note a:focus-visible {
  color: var(--cyan);
}

/* ---------- 答案分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-faq .faq-group {
  border-radius: 0;
  scroll-margin-top: 130px;
  padding: clamp(20px, 3vw, 32px);
}

.page-faq .faq-group .panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: 16px;
}

.page-faq .faq-group .panel-index {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-group .panel-title {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.3;
  color: var(--text);
}

.page-faq .faq-intro {
  margin: 0 0 4px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-faq .faq-inline-figure {
  margin: 20px 0 4px;
}

.page-faq .faq-inline-figure .media-frame {
  border: 1px solid var(--line);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-q {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr) 18px;
  gap: 10px;
  align-items: start;
  padding: 16px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--text);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-q::marker {
  content: "";
}

.page-faq .faq-q::before {
  content: "";
  width: 7px;
  height: 7px;
  margin-top: 7px;
  background: var(--cyan-dim);
  transition: background-color 0.2s var(--ease);
}

.page-faq .faq-q::after {
  content: "+";
  font-family: var(--font-data);
  font-size: 17px;
  line-height: 1.2;
  text-align: right;
  color: var(--text-faint);
  transition: color 0.2s var(--ease);
}

.page-faq .faq-q:hover::before,
.page-faq .faq-item[open] > .faq-q::before {
  background: var(--cyan);
}

.page-faq .faq-item[open] > .faq-q::after {
  content: "–";
  color: var(--cyan);
}

.page-faq .faq-q:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-a {
  padding: 0 2px 20px 24px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-faq .faq-a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-a a {
  color: var(--cyan-dim);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

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

/* ---------- 联系方式列表 ---------- */
.page-faq .faq-contact-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-contact-list li {
  background: var(--ink-900);
  padding: 12px 14px;
}

.page-faq .faq-contact-key {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-faint);
}

.page-faq .faq-contact-val {
  display: block;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-ticker {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-stick);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q,
  .page-faq .faq-q::before,
  .page-faq .faq-q::after,
  .page-faq .faq-index-link,
  .page-faq .faq-index-num {
    transition: none;
  }
}