.page-faq {
  --faq-gap: clamp(18px, 3vw, 32px);
  --faq-soft: rgba(244, 241, 234, 0.68);
  --faq-mute: rgba(244, 241, 234, 0.52);
  padding-top: calc(var(--bar-h) + 20px);
  padding-bottom: clamp(44px, 7vw, 88px);
}

.page-faq .faq-wrap {
  display: flex;
  flex-direction: column;
  gap: var(--faq-gap);
}

.page-faq .crumbs {
  margin: 0;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 32px);
  align-items: end;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(29px, 6.2vw, 58px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero .lead {
  max-width: 46ch;
  margin: 0;
  color: var(--faq-soft);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.page-faq .media-frame {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
}

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

/* ---------- 热门问题 ---------- */

.page-faq .faq-hot {
  scroll-margin-top: calc(var(--bar-h) + 20px);
  padding: clamp(18px, 3vw, 34px);
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-hot h2 {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.6vw, 36px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hot__intro {
  margin: 0;
  max-width: 62ch;
  color: var(--faq-soft);
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.85;
}

.page-faq .faq-ticks {
  display: block;
  width: 100%;
  height: 14px;
  margin: clamp(16px, 2.4vw, 24px) 0 0;
}

.page-faq .faq-hot__cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 30px);
  margin-top: clamp(16px, 2.4vw, 26px);
}

.page-faq .faq-tier {
  padding-top: 12px;
  border-top: 2px solid var(--line-strong);
}

.page-faq .faq-tier h3 {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--celadon);
}

.page-faq .faq-tier__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-tier__list li {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.page-faq .faq-tier__no {
  font-size: 12px;
  line-height: 1.9;
  letter-spacing: 0.06em;
  color: var(--coral);
}

.page-faq .faq-tier__body {
  display: block;
  min-width: 0;
}

.page-faq .faq-tier__name {
  display: block;
  font-size: 14.5px;
  line-height: 1.65;
  font-weight: 600;
  color: var(--paper);
}

.page-faq .faq-tier__desc {
  display: block;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--faq-mute);
}

.page-faq .faq-hot__media {
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-faq .faq-hot .note-strip {
  margin-top: clamp(16px, 2.4vw, 24px);
  font-size: 14px;
  line-height: 1.8;
}

.page-faq .faq-hot .note-strip a {
  color: var(--celadon);
  text-underline-offset: 3px;
}

/* ---------- 索引 + 答案 ---------- */

.page-faq .faq-body {
  scroll-margin-top: calc(var(--bar-h) + 20px);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

.page-faq .faq-index {
  border-top: 2px solid var(--coral);
  padding-top: 14px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

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

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--paper);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-index__no {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mist);
  transition: color 0.18s ease;
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--coral);
  border-left-color: var(--coral);
  background: rgba(242, 107, 79, 0.08);
}

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

.page-faq .faq-index__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--faq-mute);
}

.page-faq .faq-groups {
  padding: clamp(16px, 2.6vw, 32px);
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--bar-h) + 20px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(22px, 3vw, 38px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--line-strong);
}

.page-faq .faq-group__no {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--coral);
}

.page-faq .faq-group h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

/* ---------- 手风琴 ---------- */

.page-faq .qa {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group .qa:last-of-type {
  border-bottom: 0;
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 16px;
  gap: 10px;
  align-items: start;
  padding: 15px 0;
  list-style: none;
  cursor: pointer;
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: -0.005em;
  transition: color 0.18s ease;
}

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

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

.page-faq .qa__q:hover {
  color: var(--coral);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 3px;
}

.page-faq .qa__idx {
  font-size: 11.5px;
  line-height: 2.1;
  letter-spacing: 0.06em;
  color: var(--celadon);
  transition: color 0.18s ease;
}

.page-faq .qa__text {
  min-width: 0;
  word-break: break-word;
}

.page-faq .qa__sign {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 6px;
  justify-self: end;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--coral);
  border-radius: 1px;
}

.page-faq .qa__sign::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-faq .qa__sign::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1.5px;
  transform: translateX(-50%);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.page-faq .qa[open] .qa__sign::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-faq .qa[open] .qa__idx {
  color: var(--coral);
}

.page-faq .qa__a {
  padding: 0 0 18px 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-soft);
}

.page-faq .qa__a p {
  margin: 0;
}

/* ---------- 收束 ---------- */

.page-faq .faq-follow {
  padding: clamp(20px, 3vw, 34px);
  background: var(--ink-2);
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--coral);
  border-radius: var(--radius);
}

.page-faq .faq-follow h2 {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.8vw, 28px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-faq .faq-follow p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-soft);
}

.page-faq .faq-follow__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.page-faq .faq-follow__note {
  margin-top: 16px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--faq-mute);
}

.page-faq .faq-follow__note a {
  color: var(--celadon);
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-hot__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .qa__q {
    grid-template-columns: 34px minmax(0, 1fr) 18px;
    font-size: 16.5px;
  }

  .page-faq .qa__a {
    padding-left: 44px;
    font-size: 15.5px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 238px minmax(0, 1fr);
    gap: clamp(24px, 3vw, 46px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
    border-top: 0;
    padding-top: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-index__title {
    padding-left: 14px;
  }

  .page-faq .faq-index__list {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .page-faq .faq-index__list a {
    padding: 10px 10px 10px 14px;
    margin-left: -1px;
  }

  .page-faq .faq-index__note {
    padding-left: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__list a,
  .page-faq .qa__sign::after,
  .page-faq .qa__q,
  .page-faq .qa__idx {
    transition: none;
  }
}