.page-faq {
  --faq-index-w: 248px;
  --faq-quiet: rgba(241, 238, 228, 0.66);
  background: var(--ink);
  color: var(--bone);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 64px) 0 80px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 70px;
  right: -150px;
  width: 460px;
  height: 460px;
  border: 1px solid var(--line-cyan);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-cyan-strong), transparent);
}

.page-faq .breadcrumb {
  margin-bottom: 44px;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 40px;
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 7.2vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 14px 0 0;
  color: var(--bone);
}

.page-faq .faq-hero__lede {
  margin: 26px 0 0;
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-soft);
}

.page-faq .faq-hero__note {
  border-left: 1px solid var(--line-cyan-strong);
  padding-left: 24px;
}

.page-faq .faq-hero__note-title {
  margin: 0 0 22px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.page-faq .faq-hero__facts li {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num unit"
    "cap cap";
  gap: 4px 10px;
  align-items: baseline;
}

.page-faq .faq-hero__num {
  grid-area: num;
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-hero__unit {
  grid-area: unit;
  font-size: 13px;
  color: var(--stone);
}

.page-faq .faq-hero__cap {
  grid-area: cap;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-mute);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-main {
  padding: 64px 0 0;
}

.page-faq .faq-layout {
  display: grid;
  gap: 36px;
}

/* ---------- 问题索引 ---------- */
.page-faq .faq-index__title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--stone);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  color: var(--text-soft);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--cyan);
  border-color: var(--line-cyan-strong);
  background: rgba(53, 240, 200, 0.06);
}

.page-faq .faq-index__num {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--stone);
}

/* ---------- 问题条目 ---------- */
.page-faq .qa {
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

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

.page-faq .qa__summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  min-height: 44px;
  padding: 26px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-faq .qa__num {
  flex: none;
  width: 2.6em;
  padding-top: 8px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--stone);
  transition: color 0.24s ease;
}

.page-faq .qa[open] > .qa__summary .qa__num {
  color: var(--cyan);
}

.page-faq .qa__title {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--bone);
}

.page-faq .qa__mark {
  flex: none;
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 10px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 0.24s ease;
}

.page-faq .qa__mark::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 2px;
}

.page-faq .qa__mark::after {
  left: 8px;
  top: 0;
  width: 2px;
  height: 18px;
}

.page-faq .qa[open] > .qa__summary .qa__mark::after {
  transform: scaleY(0);
}

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

.page-faq .qa__body p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-soft);
}

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

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

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

/* ---------- 四条快答 ---------- */
.page-faq .quick {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .quick__item {
  background: var(--ink-2);
  border-left: 2px solid var(--cyan-dim);
  border-radius: var(--radius-soft);
  padding: 18px 20px;
}

.page-faq .quick__k {
  display: block;
  margin-bottom: 8px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .quick__v {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-soft);
}

/* ---------- 小图解 ---------- */
.page-faq .qa__figure {
  margin: 24px 0;
  padding: 18px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-soft);
  background: rgba(53, 240, 200, 0.035);
}

.page-faq .qa__figure svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .qa__figure figcaption {
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-mute);
}

/* ---------- 时间轴 ---------- */
.page-faq .timeline {
  list-style: none;
  margin: 26px 0;
  padding: 0 0 0 24px;
  border-left: 1px solid var(--line-cyan-strong);
  display: grid;
  gap: 24px;
}

.page-faq .timeline__item {
  position: relative;
  display: grid;
  gap: 4px;
}

.page-faq .timeline__item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
}

.page-faq .timeline__t {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .timeline__d {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

/* ---------- 米白分区条目 ---------- */
.page-faq .qa--bone {
  margin: 10px 0;
  padding: 26px 22px 34px;
  border-top: 0;
  border-radius: var(--radius-card);
  background: var(--bone);
  color: var(--ink);
}

.page-faq .qa--bone[open] > .qa__summary .qa__num {
  color: var(--clay);
}

.page-faq .qa--bone .qa__title {
  color: var(--ink);
}

.page-faq .qa--bone .qa__body p {
  color: var(--ink-text-soft);
}

.page-faq .qa--bone .qa__body a {
  color: var(--clay);
  border-bottom-color: rgba(181, 98, 60, 0.55);
}

.page-faq .qa--bone .qa__body a:hover,
.page-faq .qa--bone .qa__body a:focus-visible {
  border-bottom-color: var(--clay);
}

.page-faq .qa--bone .qa__mark::before,
.page-faq .qa--bone .qa__mark::after {
  background: var(--clay);
}

.page-faq .qa--bone .qa__summary:focus-visible {
  outline-color: var(--clay);
}

.page-faq .qa__split {
  display: grid;
  gap: 24px;
}

.page-faq .qa__text p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-text-soft);
}

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

.page-faq .qa__text a {
  color: var(--clay);
  text-decoration: none;
  border-bottom: 1px solid rgba(181, 98, 60, 0.55);
}

/* ---------- 图片容器 ---------- */
.page-faq .media-frame {
  margin: 0;
}

.page-faq .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-soft);
  object-fit: cover;
}

.page-faq .media-frame__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-mute);
}

.page-faq .qa--bone .media-frame__caption {
  color: rgba(7, 21, 18, 0.62);
}

/* ---------- 订阅档位 ---------- */
.page-faq .tiers {
  list-style: none;
  margin: 26px 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .tiers__row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px dashed var(--line-soft);
}

.page-faq .tiers__row:first-child {
  border-top: 1px dashed var(--line-soft);
}

.page-faq .tiers__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--bone);
}

.page-faq .tiers__tag {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-faq .tiers__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

/* ---------- 收尾联系区 ---------- */
.page-faq .faq-cta {
  margin-top: 96px;
  padding: 76px 0 96px;
  background: var(--ink-2);
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-cta__grid {
  display: grid;
  gap: 40px;
}

.page-faq .faq-cta__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 4.4vw, 48px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--bone);
}

.page-faq .faq-cta__text > p {
  margin: 20px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-soft);
}

.page-faq .faq-cta__contact {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-cta__contact li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
}

.page-faq .faq-cta__key {
  flex: none;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .faq-cta__val {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-soft);
  word-break: break-word;
}

.page-faq .faq-cta__actions {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- 断点 ---------- */
@media (min-width: 768px) {
  .page-faq .qa__title {
    font-size: 26px;
  }

  .page-faq .qa__body {
    max-width: 74ch;
    padding-left: calc(2.6em + 14px);
  }

  .page-faq .quick {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .tiers__row {
    grid-template-columns: 128px 96px minmax(0, 1fr);
    align-items: center;
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.8fr);
    gap: 64px;
    align-items: end;
  }

  .page-faq .qa__split {
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 32px;
    align-items: start;
  }
}

@media (min-width: 992px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 72px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 40px);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__link {
    border: 0;
    border-bottom: 1px solid var(--line-soft);
    border-radius: 0;
    padding: 12px 0;
    white-space: normal;
    font-size: 15px;
    line-height: 1.6;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    background: transparent;
    border-bottom-color: var(--line-cyan-strong);
  }

  .page-faq .faq-cta__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 64px;
    align-items: center;
  }
}

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