.page-faq {
  --faq-answer: #172b4e;
  --faq-answer-text: #dbe3f2;
  --faq-index-bg: rgba(31, 55, 96, .72);
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* 面包屑 */
.page-faq .breadcrumb {
  margin: clamp(16px, 3vw, 28px) 0 clamp(18px, 3vw, 28px);
  font-size: 13px;
  letter-spacing: .02em;
}
.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .breadcrumb li { color: var(--muted); }
.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}
.page-faq .breadcrumb a {
  color: var(--blue);
  text-decoration: none;
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible { color: var(--gold); }

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  gap: clamp(22px, 3.5vw, 44px);
  padding: clamp(22px, 4vw, 52px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background:
    radial-gradient(120% 95% at 78% -12%, rgba(42, 75, 124, .9) 0%, rgba(42, 75, 124, 0) 62%),
    var(--panel);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg,
    var(--blue) 0 20%,
    var(--white) 20% 40%,
    var(--red) 40% 60%,
    var(--green) 60% 80%,
    var(--gold) 80% 100%);
}
.page-faq .faq-hero .eyebrow { color: var(--gold); }
.page-faq .faq-hero h1 {
  margin: 10px 0 18px;
  font-size: clamp(28px, 4.6vw, 46px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--white);
}
.page-faq .faq-lede {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: rgba(243, 246, 251, .82);
}
.page-faq .faq-hero-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}
.page-faq .faq-hero-jump a {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(31, 55, 96, .8);
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
}
.page-faq .faq-hero-jump a:hover,
.page-faq .faq-hero-jump a:focus-visible {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-1px);
}
.page-faq .faq-hero-figure { margin: 0; }

/* 索引与问题组 */
.page-faq .faq-shell {
  display: grid;
  gap: 28px;
  margin-top: clamp(32px, 5vw, 64px);
}
.page-faq .faq-index { min-width: 0; }
.page-faq .faq-index-title {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--gold);
}
.page-faq .faq-index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.page-faq .faq-index-list li { flex: 0 0 auto; }
.page-faq .faq-index-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 14px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: var(--faq-index-bg);
  color: var(--white);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .22s var(--ease), background .22s var(--ease);
}
.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  border-color: var(--blue);
  background: rgba(31, 55, 96, .96);
}
.page-faq .faq-count {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  color: var(--gold);
}

.page-faq .faq-groups { min-width: 0; }
.page-faq .faq-group {
  margin-bottom: clamp(36px, 5vw, 62px);
  scroll-margin-top: 24px;
}
.page-faq .faq-group-head {
  position: relative;
  padding-left: 16px;
}
.page-faq .faq-group-head::before {
  content: "";
  position: absolute;
  left: 0;
  top: .25em;
  width: 4px;
  height: 1.05em;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--gold), var(--red));
}
.page-faq .faq-group-head h2 {
  margin: 0;
  font-size: clamp(20px, 2.4vw, 27px);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--white);
}
.page-faq .faq-group-note {
  margin: 10px 0 4px 16px;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 手风琴 */
.page-faq .qa {
  margin-top: 10px;
  border-left: 4px solid var(--line);
  border-radius: 0 12px 12px 0;
  background: var(--panel);
  overflow: hidden;
  transition: border-color .26s var(--ease);
}
.page-faq .qa[open] { border-left-color: var(--gold); }
.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px 15px 14px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--white);
}
.page-faq .qa summary::-webkit-details-marker { display: none; }
.page-faq .qa summary:hover { color: var(--gold); }
.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: -2px;
}
.page-faq .qa summary::before {
  content: "";
  flex: 0 0 8px;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--muted);
  transition: background .26s var(--ease);
}
.page-faq .qa[open] summary::before { background: var(--green); }
.page-faq .qa summary::after {
  content: "";
  flex: 0 0 9px;
  width: 9px;
  height: 9px;
  margin-left: auto;
  margin-top: 6px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg);
  transition: transform .26s var(--ease), border-color .26s var(--ease);
}
.page-faq .qa[open] summary::after {
  transform: rotate(-135deg);
  border-color: var(--gold);
}
.page-faq .qa-body {
  padding: 14px 18px 18px 34px;
  background: var(--faq-answer);
  color: var(--faq-answer-text);
  font-size: 15px;
  line-height: 1.85;
}
.page-faq .qa-body p { margin: 0 0 12px; }
.page-faq .qa-body p:last-child { margin-bottom: 0; }
.page-faq .qa-body a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .qa-body a:hover { color: var(--white); }
.page-faq .qa-body .num {
  font-family: var(--font-mono);
  font-size: 1.15em;
  color: var(--gold);
}
.page-faq .faq-inline-figure {
  margin: 20px 0 0;
  border-radius: 12px;
  border: 1px solid var(--line);
  overflow: hidden;
}

/* 求助区 */
.page-faq .faq-help {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(40px, 6vw, 76px);
  padding: clamp(22px, 4vw, 44px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(100% 120% at 10% 0%, rgba(245, 194, 74, .16) 0%, rgba(245, 194, 74, 0) 58%),
    var(--panel);
}
.page-faq .faq-help h2 {
  margin: 0 0 12px;
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--white);
}
.page-faq .faq-help p {
  margin: 0 0 12px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(243, 246, 251, .8);
}
.page-faq .faq-help-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 0;
}
.page-faq .faq-help-links a {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--white);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}
.page-faq .faq-help-links a:hover,
.page-faq .faq-help-links a:focus-visible {
  border-color: var(--gold);
  color: var(--gold);
}
.page-faq .faq-channels {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-channel {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(10, 20, 40, .45);
}
.page-faq .faq-channel-key {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--gold);
}
.page-faq .faq-channel-val {
  display: block;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--white);
  overflow-wrap: anywhere;
}
.page-faq .faq-channel-note {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* 响应式 */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: center;
  }
  .page-faq .faq-shell {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 24px;
  }
  .page-faq .faq-index-list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding: 0;
  }
  .page-faq .faq-index-list li { flex: 1 1 auto; }
  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }
}

@media (max-width: 520px) {
  .page-faq .qa-body { padding-left: 20px; }
  .page-faq .faq-group-note { margin-left: 14px; }
  .page-faq .qa summary { font-size: 15px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa summary,
  .page-faq .qa summary::before,
  .page-faq .qa summary::after,
  .page-faq .faq-hero-jump a,
  .page-faq .faq-index-link {
    transition: none;
  }
  .page-faq .faq-hero-jump a:hover,
  .page-faq .faq-hero-jump a:focus-visible { transform: none; }
}