.page-faq {
  --faq-sticky-top: 96px;
  --faq-rule: rgba(20, 22, 28, .14);
  --faq-panel-tint: rgba(22, 36, 74, .72);
  background: var(--ink-indigo);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4vw, 52px) 0 clamp(26px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(201, 162, 39, .16), transparent 58%),
    radial-gradient(90% 80% at 0% 100%, rgba(108, 99, 166, .16), transparent 62%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: 14px;
  max-width: 860px;
}

.page-faq .faq-hero__inner .breadcrumbs {
  margin-bottom: 6px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4.4vw, var(--step-5));
  line-height: 1.28;
  letter-spacing: -.01em;
  margin: 0;
  max-width: 22ch;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 66ch;
  font-size: clamp(15px, 1.6vw, var(--step-1));
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-hero__media {
  position: relative;
  margin-top: clamp(22px, 3.4vw, 40px);
}

.page-faq .faq-hero__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 2;
  object-fit: cover;
  filter: saturate(.72) hue-rotate(-8deg) contrast(1.04);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body__layout {
  display: grid;
  gap: clamp(26px, 3.6vw, 44px);
  align-items: start;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  min-width: 0;
}

.page-faq .faq-index__kicker {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--amber-light);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--paper);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.4;
  transition: border-color .2s var(--t), background-color .2s var(--t), color .2s var(--t);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--amber);
  background: var(--panel);
}

.page-faq .faq-index__num {
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--amber-light);
}

.page-faq .faq-index__foot {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-index__foot a {
  color: var(--amber-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 右侧问答流 ---------- */
.page-faq .faq-stream {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2.4vw, 26px);
}

.page-faq .faq-group {
  position: relative;
  background: var(--paper);
  color: var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: clamp(20px, 3vw, 30px) clamp(18px, 3vw, 34px) clamp(14px, 2vw, 18px);
  overflow: hidden;
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--violet), rgba(108, 99, 166, 0));
}

.page-faq .faq-group__head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--violet);
  padding-top: 7px;
}

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

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, var(--step-3));
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .faq-group__title::after {
  content: "";
  display: block;
  width: 46px;
  height: 2px;
  margin-top: 12px;
  background: var(--violet);
}

.page-faq .faq-group__note {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted-paper);
}

.page-faq .faq-group__figure {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  width: 100%;
  max-width: 320px;
  border: 1px solid var(--faq-rule);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(150deg, rgba(108, 99, 166, .22), rgba(78, 140, 122, .14));
}

.page-faq .faq-group__figure .media__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  filter: saturate(.7) hue-rotate(-10deg) contrast(1.05);
}

.page-faq .faq-group__figure .media__cap {
  display: block;
  padding: 9px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  line-height: 1.6;
  color: var(--muted-paper);
  background: rgba(242, 239, 230, .55);
}

/* ---------- 问答项 ---------- */
.page-faq .faq-qa {
  margin-top: clamp(12px, 2vw, 20px);
}

.page-faq .faq-qa__item {
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-qa__item:first-child {
  border-top: 0;
}

.page-faq .faq-qa__heading {
  margin: 0;
  font-size: inherit;
  font-weight: 400;
}

.page-faq .faq-qa__trigger {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 18px 0;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.9vw, var(--step-2));
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -.005em;
  color: var(--ink);
  transition: color .2s var(--t);
}

.page-faq .faq-qa__trigger:hover,
.page-faq .faq-qa__trigger:focus-visible {
  color: #7a2f22;
}

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

.page-faq .faq-qa__mark {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 6px;
  border: 1px solid var(--violet);
  border-radius: 1px;
}

.page-faq .faq-qa__mark::before,
.page-faq .faq-qa__mark::after {
  content: "";
  position: absolute;
  background: var(--violet);
  transition: transform .24s var(--t), opacity .24s var(--t);
}

.page-faq .faq-qa__mark::before {
  left: 4px;
  right: 4px;
  top: 50%;
  height: 1px;
  transform: translateY(-50%);
}

.page-faq .faq-qa__mark::after {
  top: 4px;
  bottom: 4px;
  left: 50%;
  width: 1px;
  transform: translateX(-50%) scaleY(1);
}

.page-faq .faq-qa__trigger[aria-expanded="true"] .faq-qa__mark::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-qa__panel {
  overflow: hidden;
}

.page-faq .faq-qa__panel[hidden] {
  display: none;
}

.page-faq .faq-qa__answer {
  padding: 0 0 20px;
  max-width: 68ch;
}

.page-faq .faq-qa__answer p {
  margin: 0;
  font-size: clamp(15px, 1.55vw, var(--step-1));
  line-height: 1.9;
  color: var(--ink);
}

/* ---------- 提示条 ---------- */
.page-faq .faq-nudge {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 18px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius);
  background: var(--faq-panel-tint);
}

.page-faq .faq-nudge__text {
  margin: 0;
  min-width: 0;
  flex: 1 1 260px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
}

.page-faq .faq-nudge__link {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--amber-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(235, 203, 115, .5);
  padding-bottom: 2px;
  transition: border-color .2s var(--t), color .2s var(--t);
}

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

.page-faq .faq-nudge--last {
  border-left-color: var(--celadon);
}

/* ---------- 触达与焦点 ---------- */
.page-faq a:focus-visible,
.page-faq button:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-group__figure {
    max-width: 380px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky-top);
    align-self: start;
    padding-bottom: 8px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-faq .faq-index__link {
    border-color: transparent;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: 10px 12px;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-color: transparent;
    border-left-color: var(--amber);
    background: var(--panel);
  }

  .page-faq .faq-group__figure {
    max-width: 300px;
    float: right;
    margin: 0 0 18px 26px;
  }

  .page-faq .faq-qa {
    clear: both;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-group {
    padding: 34px 40px 20px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-qa__trigger,
  .page-faq .faq-qa__mark::before,
  .page-faq .faq-qa__mark::after,
  .page-faq .faq-nudge__link {
    transition: none !important;
  }
}