.page-faq {
  --faq-measure: 68ch;
  display: block;
}

.page-faq .page-faq__crumbs {
  padding-top: 28px;
  padding-bottom: 4px;
}

/* ---------- 框景首屏 ---------- */
.page-faq .faq-hero {
  padding: 24px 0 60px;
  background: var(--gradient-veil);
  border-bottom: 1px solid var(--line-hair);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

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

.page-faq .faq-hero h1 {
  margin: 14px 0 18px;
  max-width: 14em;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(32px, 6.2vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper-mist);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: var(--faq-measure);
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper-mist);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--line-hair);
  border-radius: var(--radius);
  background: rgba(8, 28, 22, 0.6);
  color: var(--paper-mist);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  border-color: var(--grass-core);
  color: var(--grass-core);
  outline: none;
}

.page-faq .faq-jump__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist-gray);
  transition: color 180ms var(--ease);
}

.page-faq .faq-jump a:hover .faq-jump__index,
.page-faq .faq-jump a:focus-visible .faq-jump__index {
  color: var(--grass-core);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 32px;
  }

  .page-faq .faq-hero__rule {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding-top: 6px;
  }

  .page-faq .faq-hero__rule-num {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--mist-gray);
    writing-mode: vertical-rl;
    text-orientation: mixed;
  }

  .page-faq .faq-hero__rule-line {
    flex: 1 1 auto;
    width: 1px;
    min-height: 140px;
    background: linear-gradient(180deg, var(--grass-core) 0%, rgba(51, 226, 127, 0) 100%);
  }
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-chapter {
  padding: 56px 0;
  border-bottom: 1px solid var(--line-hair);
}

.page-faq .faq-chapter--slab {
  background: var(--ink-slab);
}

.page-faq .faq-chapter--deep {
  background: var(--pitch-deep);
}

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

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

.page-faq .faq-chapter__body {
  display: grid;
  gap: 28px;
}

.page-faq .faq-chapter__intro {
  margin: 0;
  max-width: var(--faq-measure);
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper-mist);
}

.page-faq figure {
  margin: 0;
}

@media (min-width: 980px) {
  .page-faq .faq-chapter__body--split {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 40px;
    align-items: start;
  }
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 0;
  min-width: 0;
}

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

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

.page-faq .qa__q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .qa__tick {
  flex: 0 0 auto;
  width: 2px;
  height: 14px;
  background: var(--line-hair);
  transition: background 180ms var(--ease), height 180ms var(--ease);
}

.page-faq .qa[open] .qa__tick {
  height: 22px;
  background: var(--grass-core);
}

.page-faq .qa__index {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist-gray);
  transition: color 180ms var(--ease);
}

.page-faq .qa[open] .qa__index,
.page-faq .qa__q:hover .qa__index,
.page-faq .qa__q:focus-visible .qa__index {
  color: var(--grass-core);
}

.page-faq .qa__q:focus-visible {
  outline: 1px solid var(--grass-core);
  outline-offset: 2px;
}

.page-faq .qa__title {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--paper-mist);
}

.page-faq .qa__sign {
  position: relative;
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--mist-gray);
  transition: transform 180ms var(--ease), background 180ms var(--ease);
}

.page-faq .qa__sign::before {
  left: 0;
  top: 5px;
  width: 12px;
  height: 1px;
}

.page-faq .qa__sign::after {
  left: 5px;
  top: 0;
  width: 1px;
  height: 12px;
}

.page-faq .qa[open] .qa__sign::before {
  background: var(--grass-core);
}

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

.page-faq .qa__a {
  padding: 2px 2px 24px 30px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist-gray);
}

.page-faq .qa__a > p {
  margin: 0 0 12px;
  max-width: var(--faq-measure);
}

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

.page-faq .qa__a strong {
  color: var(--paper-mist);
  font-weight: 600;
}

.page-faq .qa__a a,
.page-faq .faq-contact__note a {
  color: var(--grass-soft);
  text-decoration: underline;
  text-decoration-color: var(--grass-core);
  text-underline-offset: 3px;
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible,
.page-faq .faq-contact__note a:hover,
.page-faq .faq-contact__note a:focus-visible {
  color: var(--grass-core);
}

/* ---------- 宽幅容量刻度带 ---------- */
.page-faq .faq-bench {
  padding: 54px 0 52px;
  background: var(--pitch-deep);
  border-top: 1px solid var(--line-hair);
  border-bottom: 1px solid var(--line-hair);
}

.page-faq .faq-bench__head {
  display: grid;
  gap: 10px;
  margin-bottom: 28px;
}

.page-faq .faq-bench__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--paper-mist);
}

.page-faq .faq-bench__head p {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist-gray);
}

.page-faq .faq-bench__scroll {
  overflow-x: auto;
  padding-bottom: 6px;
}

.page-faq .faq-bench__svg {
  display: block;
  width: 100%;
  min-width: 560px;
  height: auto;
  overflow: visible;
}

.page-faq .faq-bench__svg text {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.06em;
  fill: var(--mist-gray);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-bench__svg text.bench-seg {
  font-size: 14px;
  letter-spacing: 0.1em;
  fill: var(--grass-soft);
}

/* ---------- 纠错信息清单 ---------- */
.page-faq .faq-submit {
  max-width: 760px;
}

.page-faq .faq-fields {
  display: grid;
  gap: 12px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-fields li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
}

.page-faq .faq-fields b {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--grass-soft);
}

.page-faq .faq-fields span {
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist-gray);
}

.page-faq .faq-submit__note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-hair);
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist-gray);
}

@media (min-width: 620px) {
  .page-faq .faq-fields li {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

/* ---------- 人工通道 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 20px;
  max-width: 760px;
}

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

.page-faq .faq-contact__list li {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid var(--line-hair);
}

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

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

.page-faq .faq-contact__val {
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper-mist);
  word-break: break-word;
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-contact__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist-gray);
}

.page-faq .faq-contact .btn {
  justify-self: start;
}

@media (min-width: 620px) {
  .page-faq .faq-contact__list li {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__tick,
  .page-faq .qa__index,
  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after,
  .page-faq .faq-jump a,
  .page-faq .faq-jump__index {
    transition: none;
  }
}