.page-faq {
  --faq-radius: 3px;
  --faq-gap: clamp(26px, 4vw, 52px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  color: var(--paper);
  background:
    radial-gradient(130% 100% at 86% 0%, rgba(110, 143, 179, .28), transparent 58%),
    radial-gradient(90% 80% at 6% 100%, rgba(178, 58, 46, .18), transparent 62%),
    var(--ink-1);
  padding: clamp(72px, 11vw, 128px) 0 clamp(40px, 5vw, 72px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--flag-blue), var(--paper) 25%, var(--cinnabar) 50%, var(--turquoise) 75%, var(--flag-yellow));
  opacity: .72;
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: center;
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.4vw, 56px);
  line-height: 1.06;
  letter-spacing: -.025em;
  color: var(--paper-3);
  margin: 14px 0 0;
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: 30px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line-dark);
  display: flex;
  flex-wrap: wrap;
  gap: 18px clamp(20px, 4vw, 44px);
}

.page-faq .faq-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  letter-spacing: .02em;
  color: var(--cinnabar-soft);
}

.page-faq .faq-stat__label {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-faq .faq-hero__figure {
  margin: 0;
  padding: 8px;
  border: 1px solid var(--line-dark-strong);
  background: rgba(18, 41, 74, .62);
  border-radius: var(--faq-radius);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 2px;
}

.page-faq .faq-hero__caption {
  margin: 10px 2px 2px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

/* ---------- 分类速查条 ---------- */
.page-faq .faq-quick {
  background: var(--paper-2);
  border-bottom: 1px solid var(--line-light);
  padding: 16px 0;
}

.page-faq .faq-quick__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px clamp(14px, 2vw, 24px);
}

.page-faq .faq-quick__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--text-soft);
}

.page-faq .faq-quick__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-quick__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border: 1px solid rgba(20, 24, 31, .18);
  border-radius: 999px;
  background: var(--paper-3);
  color: var(--text);
  font-size: 13.5px;
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-quick__link:hover,
.page-faq .faq-quick__link:focus-visible {
  border-color: var(--cinnabar);
  color: var(--cinnabar);
  background: var(--paper);
}

.page-faq .faq-quick__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--cinnabar);
}

/* ---------- 主体：索引 + 问答 ---------- */
.page-faq .faq-body {
  background: var(--paper);
  color: var(--text);
  padding: clamp(34px, 5vw, 62px) 0 clamp(46px, 7vw, 86px);
}

.page-faq .faq-body__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

.page-faq .faq-index {
  border-left: 2px solid var(--line-light);
  padding-left: 12px;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--text-soft);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(136px, 1fr));
  gap: 2px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  margin-left: -14px;
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--cinnabar);
  border-left-color: var(--cinnabar);
  background: var(--paper-2);
}

.page-faq .faq-index__link[aria-current="true"] {
  color: var(--cinnabar);
  border-left-color: var(--cinnabar);
  background: rgba(178, 58, 46, .07);
  font-weight: 600;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--cinnabar);
}

.page-faq .faq-groups {
  display: flex;
  flex-direction: column;
  gap: var(--faq-gap);
  min-width: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  align-items: baseline;
  padding-bottom: 12px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(20, 24, 31, .22);
}

.page-faq .faq-group__num {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--cinnabar);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(19px, 2.4vw, 26px);
  letter-spacing: -.01em;
  line-height: 1.35;
  color: var(--text);
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-faq .faq-group__items {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  background: var(--paper-3);
  border: 1px solid rgba(20, 24, 31, .16);
  border-radius: var(--faq-radius);
  box-shadow: 3px 3px 0 rgba(229, 216, 196, .95);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(178, 58, 46, .42);
  box-shadow: 3px 3px 0 var(--paper-2);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
}

.page-faq .faq-item__dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--mist);
}

.page-faq .faq-item__dot--hot {
  background: var(--turquoise);
}

.page-faq .faq-item__dot--warn {
  background: var(--flag-yellow);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  margin: 0;
  font-size: clamp(15px, 1.6vw, 16.5px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
}

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 4px;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--cinnabar);
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}

.page-faq .faq-item__sign::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .faq-item[open] .faq-item__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__a {
  padding: 0 16px 16px 34px;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-faq .faq-item__a a {
  color: var(--cinnabar);
  text-decoration: none;
  border-bottom: 1px solid rgba(178, 58, 46, .45);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--turquoise);
  border-bottom-color: var(--turquoise);
}

/* ---------- 服务渠道收尾 ---------- */
.page-faq .faq-support {
  background: linear-gradient(180deg, var(--ink-2), var(--ink-1) 70%);
  color: var(--paper);
  padding: clamp(42px, 6vw, 84px) 0;
  border-top: 3px solid var(--cinnabar);
}

.page-faq .faq-support__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

.page-faq .faq-support__title {
  margin: 12px 0 0;
  color: var(--paper-3);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.18;
  letter-spacing: -.02em;
}

.page-faq .faq-support__lede {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-support__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 22px 0 0;
  font-size: 13.5px;
}

.page-faq .faq-support__links a {
  color: var(--cinnabar-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(224, 122, 105, .45);
  padding-bottom: 1px;
}

.page-faq .faq-support__links a:hover,
.page-faq .faq-support__links a:focus-visible {
  color: var(--paper-3);
  border-bottom-color: var(--paper-3);
}

.page-faq .support-card {
  background: var(--paper-3);
  color: var(--text);
  border-radius: var(--faq-radius);
  padding: 20px;
  box-shadow: 6px 6px 0 rgba(8, 19, 36, .55);
}

.page-faq .support-card__status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin: 0;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--turquoise);
}

.page-faq .support-card__status::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--turquoise);
}

.page-faq .support-card__time {
  margin: 8px 0 16px;
  font-family: var(--font-mono);
  font-size: clamp(24px, 4vw, 30px);
  letter-spacing: .02em;
  color: var(--text);
}

.page-faq .support-card__figure {
  margin: 0 0 14px;
}

.page-faq .support-card__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
}

.page-faq .support-card__row {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-soft);
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-faq .faq-body__layout {
    grid-template-columns: 208px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 32px;
    align-self: start;
  }

  .page-faq .faq-index__list {
    grid-template-columns: 1fr;
  }

  .page-faq .faq-support__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 400px);
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-body__layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-quick__link,
  .page-faq .faq-index__link,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after {
    transition: none;
  }
}