.page-faq {
  --faq-soft: rgba(244, 242, 234, 0.72);
  --faq-cyan-veil: rgba(63, 227, 210, 0.18);
  --faq-orange-veil: rgba(255, 106, 43, 0.18);
  background: var(--ink-950);
  color: var(--paper);
}

/* ---------- Hero ---------- */

.page-faq .faq-hero {
  padding-top: calc(var(--topbar-h) + 24px);
  padding-bottom: 0;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 26px;
}

.page-faq .faq-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--sage);
}

.page-faq .faq-kicker__num {
  display: inline-grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line-strong);
  color: var(--signal);
  font-size: 0.68rem;
  letter-spacing: 0;
}

.page-faq .faq-title {
  margin: 0 0 30px;
  color: var(--paper);
}

.page-faq .faq-hero__foot {
  display: grid;
  gap: 28px;
  padding-bottom: 52px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-lede {
  margin: 0;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--faq-soft);
  max-width: 40ch;
}

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

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line-strong);
  color: var(--paper);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: background var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  background: var(--ink-700);
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-faq .faq-jump__num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--signal);
}

/* ---------- 通用小标题 ---------- */

.page-faq .faq-head {
  margin-bottom: 30px;
}

.page-faq .faq-head__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-head__title {
  margin: 0;
  font-family: var(--font-cond);
  font-weight: 800;
  font-size: clamp(1.55rem, 4.4vw, 2.5rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--paper);
}

/* ---------- 三步上手 ---------- */

.page-faq .faq-steps {
  padding: 60px 0 56px;
  background: var(--ink-800);
}

.page-faq .faq-steps__list {
  list-style: none;
  margin: 0 0 36px;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-step {
  padding: 26px 0 6px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-step::before {
  content: "";
  display: block;
  width: 34px;
  height: 2px;
  margin-bottom: 18px;
  background: var(--signal);
}

.page-faq .faq-step:nth-child(2)::before {
  background: var(--cyan);
}

.page-faq .faq-step__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--signal);
}

.page-faq .faq-step:nth-child(2) .faq-step__num {
  color: var(--cyan);
}

.page-faq .faq-step__title {
  margin: 0 0 10px;
  font-family: var(--font-cond);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--faq-soft);
  max-width: 36ch;
}

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

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

/* ---------- 主题簇问答 ---------- */

.page-faq .faq-clusters {
  padding: 56px 0 64px;
}

.page-faq .faq-layout {
  display: grid;
  gap: 6px;
}

.page-faq .faq-toc {
  display: none;
}

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

.page-faq .faq-cluster {
  padding: 34px 0 6px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-cluster:first-child {
  padding-top: 4px;
  border-top: none;
}

.page-faq .faq-cluster__head {
  margin-bottom: 16px;
}

.page-faq .faq-cluster__num {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(3.2rem, 11vw, 5.6rem);
  line-height: 0.78;
  letter-spacing: -0.04em;
  color: var(--faq-cyan-veil);
}

.page-faq .faq-cluster:nth-child(even) .faq-cluster__num {
  color: var(--faq-orange-veil);
}

.page-faq .faq-cluster__title {
  margin: 0 0 8px;
  font-family: var(--font-cond);
  font-weight: 800;
  font-size: clamp(1.2rem, 3.4vw, 1.6rem);
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-cluster__lede {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--sage);
  max-width: 44ch;
}

.page-faq .faq-list {
  padding-left: 20px;
  border-left: 1px solid var(--line);
}

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

.page-faq .faq-item > summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 17px 0;
  font-size: 0.97rem;
  line-height: 1.55;
  color: var(--paper);
  transition: color var(--t-fast) var(--ease);
}

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

.page-faq .faq-item > summary::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 24px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
  transition: background var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease);
}

.page-faq .faq-item > summary:hover {
  color: var(--cyan);
}

.page-faq .faq-item[open] > summary {
  color: var(--cyan);
}

.page-faq .faq-item[open] > summary::before {
  background: var(--signal);
  transform: scale(1.35);
}

.page-faq .faq-item__a {
  margin: 0;
  padding: 0 0 18px;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--faq-soft);
  max-width: 54ch;
}

/* ---------- 排障流程 ---------- */

.page-faq .faq-fix {
  padding: 56px 0;
  background: var(--ink-800);
}

.page-faq .faq-fix__grid {
  display: grid;
  gap: 32px;
}

.page-faq .fix-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .fix-step {
  position: relative;
  border-top: 2px solid var(--line-strong);
  padding: 20px 0 22px;
}

.page-faq .fix-step__box {
  position: absolute;
  left: 0;
  top: 24px;
  width: 18px;
  height: 18px;
  accent-color: var(--signal);
  cursor: pointer;
}

.page-faq .fix-step__body {
  padding-left: 32px;
  transition: opacity var(--t-fast) var(--ease);
}

.page-faq .fix-step__title {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-cond);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--paper);
  cursor: pointer;
}

.page-faq .fix-step__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--faq-soft);
  max-width: 40ch;
}

.page-faq .fix-step__box:checked + .fix-step__body {
  opacity: 0.42;
}

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

/* ---------- 联系客服 ---------- */

.page-faq .faq-help {
  padding: 64px 0 72px;
}

.page-faq .faq-help__panel {
  padding: 34px 22px;
  color: var(--text-ink);
}

.page-faq .faq-help__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: #B4501E;
}

.page-faq .faq-help__title {
  margin: 0 0 14px;
  font-family: var(--font-cond);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.2vw, 2.2rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--text-ink);
}

.page-faq .faq-help__text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(20, 32, 28, 0.78);
  max-width: 48ch;
}

.page-faq .faq-help__cols {
  display: grid;
  gap: 26px;
  margin-top: 30px;
  padding-top: 26px;
  border-top: 1px solid var(--line-paper);
}

.page-faq .faq-help__col-title {
  margin: 0 0 12px;
  font-family: var(--font-cond);
  font-weight: 800;
  font-size: 0.98rem;
  color: var(--text-ink);
}

.page-faq .faq-help__list,
.page-faq .faq-help__contact {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-help__list li {
  position: relative;
  padding: 7px 0 7px 16px;
  font-size: 0.88rem;
  line-height: 1.65;
  color: rgba(20, 32, 28, 0.78);
}

.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  width: 6px;
  height: 6px;
  background: var(--signal);
}

.page-faq .faq-help__contact li {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line-paper);
  font-size: 0.88rem;
  line-height: 1.6;
}

.page-faq .faq-help__key {
  min-width: 42px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: rgba(20, 32, 28, 0.55);
}

.page-faq .faq-help__val {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--text-ink);
  word-break: break-word;
}

.page-faq .faq-help__note {
  margin: 14px 0 0;
  font-size: 0.8rem;
  line-height: 1.7;
  color: rgba(20, 32, 28, 0.6);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.page-faq .faq-help__actions .btn {
  font-size: 0.86rem;
}

/* ---------- 断点 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding-top: calc(var(--topbar-h) + 40px);
  }

  .page-faq .faq-hero__foot {
    grid-template-columns: 5fr 7fr;
    align-items: end;
    gap: 40px;
    padding-bottom: 64px;
  }

  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, 1fr);
    gap: 0 26px;
    margin-bottom: 44px;
  }

  .page-faq .faq-step {
    border-top: 2px solid var(--line-strong);
    padding: 24px 0 8px;
  }

  .page-faq .faq-step:nth-child(2) {
    padding-top: 46px;
  }

  .page-faq .faq-step:nth-child(3) {
    padding-top: 66px;
  }

  .page-faq .faq-help__panel {
    padding: 46px 40px;
  }

  .page-faq .faq-help__cols {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-fix__grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-cluster__head {
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 26px;
    align-items: start;
  }

  .page-faq .faq-cluster__num {
    grid-row: span 2;
    margin-bottom: 0;
  }

  .page-faq .faq-cluster__title {
    align-self: end;
    margin-bottom: 8px;
  }

  .page-faq .faq-cluster__lede {
    align-self: start;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding-top: 72px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    column-gap: 64px;
    align-items: start;
  }

  .page-faq .faq-toc {
    display: block;
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-toc__label {
    margin: 0 0 10px;
    padding-left: 18px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.16em;
    color: var(--sage);
  }

  .page-faq .faq-toc__list {
    list-style: none;
    margin: 0;
    padding: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-toc__link {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 12px 0 12px 18px;
    border-bottom: 1px solid var(--line);
    color: var(--sage);
    font-size: 0.85rem;
    text-decoration: none;
    transition: color var(--t-fast) var(--ease),
      padding-left var(--t-fast) var(--ease);
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible {
    color: var(--cyan);
    padding-left: 23px;
  }

  .page-faq .faq-toc__num {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--signal);
  }

  .page-faq .faq-item__a {
    padding-left: 2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__link,
  .page-faq .faq-item > summary,
  .page-faq .faq-item > summary::before,
  .page-faq .faq-toc__link,
  .page-faq .fix-step__body {
    transition: none;
  }
}
</main>