.page-faq {
  --faq-rail-w: 196px;
  --faq-gap: clamp(18px, 2.4vw, 28px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .breadcrumbs {
  margin-top: clamp(16px, 2.6vw, 28px);
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  margin-top: clamp(16px, 2.4vw, 26px);
  padding: clamp(26px, 5vw, 54px) 0 clamp(30px, 5.4vw, 66px);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
  background-image:
    radial-gradient(120% 90% at 88% 0%, rgba(169, 192, 199, 0.26), transparent 62%),
    radial-gradient(90% 80% at 4% 100%, rgba(232, 179, 158, 0.20), transparent 66%);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(32px, 6.4vw, 68px);
  font-weight: 300;
  line-height: 1.14;
  letter-spacing: -0.012em;
  max-width: 15em;
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 40em;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--ink-2);
}

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

.page-faq .faq-hero__meta {
  align-self: start;
  padding: 20px 20px 22px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--silver);
}

.page-faq .faq-hero__meta-label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-hero__meta-value {
  margin: 8px 0 0;
  font-size: clamp(17px, 2vw, 21px);
  color: var(--silver);
  letter-spacing: 0.02em;
}

.page-faq .faq-hero__meta-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__meta-list li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.6;
  word-break: break-word;
}

.page-faq .faq-hero__meta-list li:last-child {
  border-bottom: 0;
}

.page-faq .faq-hero__meta-list span {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

/* ---------- 索引 + 正文 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  margin-top: clamp(30px, 5vw, 58px);
}

.page-faq .faq-rail__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

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

.page-faq .faq-rail__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-size: 13px;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-faq .faq-rail__list a .mono {
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.08em;
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  border-color: var(--silver);
  color: var(--silver);
  background: var(--paper-2);
}

.page-faq .faq-rail__list a[aria-current="true"] {
  border-color: var(--cinnabar);
  color: var(--cinnabar);
  background: rgba(232, 179, 158, 0.22);
}

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

/* ---------- 通用区块 ---------- */
.page-faq .faq-block {
  padding-top: clamp(28px, 4vw, 46px);
  border-top: 1px solid var(--line);
  margin-top: clamp(32px, 5vw, 60px);
}

.page-faq .faq-block:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-block__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 14px;
}

.page-faq .faq-block__no {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cinnabar);
}

.page-faq .faq-block .section-title {
  margin: 0;
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: -0.006em;
}

.page-faq .faq-block__lead {
  margin: 16px 0 0;
  max-width: 44em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-faq .faq-block .prose {
  margin-top: 18px;
  font-size: 15.5px;
  line-height: 1.82;
}

.page-faq .faq-block .prose p {
  margin: 0 0 1.05em;
  max-width: 44em;
}

.page-faq .faq-block .prose a {
  color: var(--silver);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .faq-block .prose a:hover {
  color: var(--cinnabar);
}

.page-faq .faq-note {
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--silver-2);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-2);
}

.page-faq .faq-note a {
  color: var(--silver);
}

/* ---------- 01 准备 ---------- */
.page-faq .faq-prepare {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-prepare__item {
  background: var(--paper);
  padding: 20px 18px 22px;
  transition: background-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-faq .faq-prepare__item:hover {
  background: var(--paper-2);
  transform: translateY(-2px);
}

.page-faq .faq-prepare__no {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cinnabar);
}

.page-faq .faq-prepare__item h3 {
  margin: 10px 0 8px;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .faq-prepare__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-2);
}

/* ---------- 02 时间轴 ---------- */
.page-faq .faq-timeline {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: 24px;
}

.page-faq .faq-timeline__text .prose,
.page-faq .faq-timeline__text p {
  margin: 0 0 1em;
}

.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--line);
  padding: 10px;
  background: var(--paper-2);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line-light);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .faq-samples {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-left: 1px solid var(--silver-2);
}

.page-faq .faq-samples li {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0 12px 16px;
  border-bottom: 1px solid var(--line);
  position: relative;
}

.page-faq .faq-samples li::before {
  content: "";
  position: absolute;
  left: -3.5px;
  top: 20px;
  width: 6px;
  height: 6px;
  background: var(--cinnabar);
  border-radius: 50%;
}

.page-faq .faq-samples__time {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
  padding-top: 2px;
}

.page-faq .faq-samples__body {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 03 换机四步 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  margin-top: 26px;
}

.page-faq .faq-step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  transition: background-color 180ms var(--ease);
}

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

.page-faq .faq-step:hover {
  background: var(--paper-2);
}

.page-faq .faq-step__no {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cinnabar);
  padding-top: 3px;
}

.page-faq .faq-step h3 {
  margin: 0 0 7px;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-2);
}

/* ---------- 04 常见问题 ---------- */
.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.page-faq .faq-jump a {
  padding: 7px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 13px;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 150ms var(--ease), border-color 150ms var(--ease), background-color 150ms var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--cinnabar);
  border-color: var(--cinnabar);
  background: rgba(232, 179, 158, 0.24);
}

.page-faq .faq-groups {
  margin-top: 30px;
  display: grid;
  gap: clamp(26px, 4vw, 40px);
}

.page-faq .faq-group__title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--ink);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-group__title .mono {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

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

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink-soft);
  transition: color 150ms var(--ease);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.4;
  color: var(--silver);
  transition: color 150ms var(--ease), transform 180ms var(--ease);
}

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

.page-faq .faq-item[open] summary {
  color: var(--silver);
  font-weight: 500;
}

.page-faq .faq-item[open] summary::after {
  content: "–";
  color: var(--cinnabar);
}

.page-faq .faq-item__body {
  padding: 0 2px 18px;
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 42em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-faq .faq-item__body a {
  color: var(--silver);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 05 联系 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: clamp(22px, 3.4vw, 36px);
  margin-top: 24px;
}

.page-faq .faq-contact__panel {
  padding: 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cinnabar);
}

.page-faq .faq-contact__panel .contact-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
}

.page-faq .faq-contact__panel .contact-item {
  display: grid;
  gap: 4px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-contact__panel .contact-item:last-child {
  border-bottom: 0;
}

.page-faq .faq-contact__panel .contact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-faq .faq-contact__panel .contact-value {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink);
  word-break: break-word;
}

.page-faq .faq-contact__panel .contact-value--mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  color: var(--silver);
}

/* ---------- 06 延伸 ---------- */
.page-faq .faq-more {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-faq .faq-more__card {
  position: relative;
  display: block;
  padding: 22px 20px 24px;
  border: 1px solid var(--line);
  background: var(--paper-2);
  text-decoration: none;
  color: inherit;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-faq .faq-more__card:hover,
.page-faq .faq-more__card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--silver);
  background: var(--paper);
}

.page-faq .faq-more__kicker {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .faq-more__card h3 {
  margin: 10px 0 8px;
  font-size: 18px;
  font-weight: 500;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .faq-more__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-2);
}

.page-faq .faq-more__arrow {
  display: inline-block;
  margin-top: 14px;
  font-size: 16px;
  color: var(--cinnabar);
}

.page-faq .faq-more__card--quiet {
  background: transparent;
  border-style: dashed;
}

/* ---------- 自适应 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-prepare {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .faq-more__card--quiet {
    grid-column: span 2;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }

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

  .page-faq .faq-rail__list a {
    display: flex;
    width: 100%;
    border-color: transparent;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: 9px 10px 9px 12px;
  }

  .page-faq .faq-rail__list a[aria-current="true"] {
    border-color: transparent;
    border-left-color: var(--cinnabar);
    background: rgba(232, 179, 158, 0.20);
  }

  .page-faq .faq-timeline {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    align-items: start;
  }

  .page-faq .faq-steps {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-figure--tall {
    align-self: start;
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1fr) minmax(0, 340px);
    align-items: start;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: end;
  }

  .page-faq .faq-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(28px, 4vw, 48px);
  }

  .page-faq .faq-group:first-child {
    grid-column: span 2;
  }

  .page-faq .faq-more {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-more__card--quiet {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-prepare__item,
  .page-faq .faq-more__card,
  .page-faq .faq-step,
  .page-faq .faq-item summary::after {
    transition: none;
  }

  .page-faq .faq-prepare__item:hover,
  .page-faq .faq-more__card:hover,
  .page-faq .faq-more__card:focus-visible {
    transform: none;
  }
}