.page-faq {
  --faq-hair: rgba(33, 26, 20, 0.22);
  --faq-card-shadow: 5px 5px 0 rgba(33, 26, 20, 0.12);
}

.page-faq .faq-crumbs {
  padding-top: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-60);
}

.page-faq .faq-crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--ink-25);
}

.page-faq .faq-crumbs a {
  color: var(--ink-80);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease), color var(--ease);
}

.page-faq .faq-crumbs a:hover {
  color: var(--ink);
  border-bottom-color: var(--jade);
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 3px solid var(--jade);
  outline-offset: 2px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: var(--gap-m);
  padding-block: 20px 40px;
}

.page-faq .faq-hero__intro .eyebrow {
  margin: 0 0 8px;
  color: var(--clay);
}

.page-faq .faq-hero__intro h1 {
  margin: 10px 0 16px;
  font-size: clamp(32px, 8.5vw, 62px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.page-faq .faq-hero__intro .lede {
  margin: 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-80);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.page-faq .faq-jump {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  background: var(--paper);
  border: 1px solid var(--ink-25);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: border-color var(--ease), background var(--ease), transform var(--ease);
}

.page-faq .faq-jump:hover {
  background: var(--paper-deep);
  border-color: var(--jade);
  transform: translateY(-1px);
}

.page-faq .faq-hero__index {
  align-self: start;
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-paper);
}

.page-faq .faq-texture {
  position: relative;
  overflow: hidden;
  border-bottom: 2px solid var(--ink);
  background: var(--steel);
}

.page-faq .faq-texture img {
  display: block;
  width: 100%;
  aspect-ratio: 12 / 5;
  object-fit: cover;
}

.page-faq .faq-texture__label {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 5px 9px;
  background: var(--ink);
  color: var(--paper);
  font-size: 11px;
  letter-spacing: 0.1em;
}

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

.page-faq .faq-index__item + .faq-index__item {
  border-top: 1px dashed var(--faq-hair);
}

.page-faq .faq-index__item a {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 12px 13px;
  color: var(--ink);
  text-decoration: none;
  transition: background var(--ease), box-shadow var(--ease);
}

.page-faq .faq-index__item a:hover {
  background: var(--paper-deep);
  box-shadow: inset 4px 0 0 var(--jade);
}

.page-faq .faq-index__no {
  font-size: 13px;
  font-weight: 700;
  color: var(--ember);
}

.page-faq .faq-index__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.page-faq .faq-index__body strong {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-index__body span {
  font-size: 12px;
  line-height: 1.5;
  color: var(--ink-60);
}

.page-faq .faq-index__count {
  font-size: 11px;
  white-space: nowrap;
  color: var(--ink-60);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: var(--gap-l);
  padding-block: 36px 48px;
  border-top: 2px solid var(--ink);
}

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

.page-faq .faq-group {
  margin-bottom: 40px;
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 10px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--ink);
  scroll-margin-top: 96px;
}

.page-faq .faq-group__no {
  flex: none;
  padding: 3px 7px;
  background: var(--ink);
  color: var(--paper);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 4.4vw, 28px);
  font-weight: 900;
  letter-spacing: -0.02em;
}

.page-faq .faq-group__meta {
  margin-left: auto;
  font-size: 11px;
  white-space: nowrap;
  color: var(--ink-60);
}

.page-faq .faq-q {
  background: var(--paper);
  border: 2px solid var(--ink);
  scroll-margin-top: 96px;
  transition: box-shadow var(--ease), border-color var(--ease);
}

.page-faq .faq-q + .faq-q {
  margin-top: 10px;
}

.page-faq .faq-q summary {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 15px;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.55;
  transition: background var(--ease);
}

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

.page-faq .faq-q summary::marker {
  content: "";
}

.page-faq .faq-q summary:hover {
  background: var(--paper-deep);
}

.page-faq .faq-q__no {
  flex: none;
  padding-top: 3px;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--clay);
}

.page-faq .faq-q__sign {
  flex: none;
  margin-left: auto;
  padding-top: 1px;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--jade);
}

.page-faq .faq-q:not([open]) .faq-q__sign::before {
  content: "+";
}

.page-faq .faq-q[open] .faq-q__sign::before {
  content: "−";
}

.page-faq .faq-q__body {
  margin: 0;
  padding: 12px 15px 16px 44px;
  border-top: 1px dashed var(--faq-hair);
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-80);
}

.page-faq .faq-q__body a {
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--jade);
  transition: background var(--ease), color var(--ease);
}

.page-faq .faq-q__body a:hover {
  background: var(--jade);
  color: #FFFFFF;
}

.page-faq .faq-q:target {
  border-color: var(--jade);
  box-shadow: 5px 5px 0 rgba(0, 168, 143, 0.3);
}

/* ---------- 术语表边注 ---------- */
.page-faq .faq-glossary {
  align-self: start;
  padding: 18px 16px;
  background: var(--paper-deep);
  border: 2px solid var(--ink);
  box-shadow: var(--faq-card-shadow);
}

.page-faq .faq-glossary .eyebrow {
  margin: 0 0 6px;
  color: var(--clay);
}

.page-faq .faq-glossary__title {
  margin: 0 0 14px;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.page-faq .faq-glossary__list {
  margin: 0;
  padding: 0;
}

.page-faq .faq-glossary__term {
  display: grid;
  gap: 3px;
  padding: 10px 0;
  border-top: 1px dashed var(--faq-hair);
}

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

.page-faq .faq-glossary dt {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--clay);
}

.page-faq .faq-glossary dd {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-80);
}

.page-faq .faq-glossary__fig {
  margin: 14px 0 0;
  border: 2px solid var(--ink);
  background: var(--steel);
  overflow: hidden;
}

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

/* ---------- 自查路径 ---------- */
.page-faq .faq-steps .eyebrow {
  margin: 0 0 8px;
  color: var(--clay);
}

.page-faq .faq-steps h2 {
  margin: 0;
  font-size: clamp(24px, 5.5vw, 38px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.page-faq .faq-steps__list {
  display: grid;
  gap: 16px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  padding: 16px;
  background: var(--paper);
  border: 2px solid var(--ink);
  border-top-width: 8px;
  border-top-color: var(--ember);
}

.page-faq .faq-step__no {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-60);
}

.page-faq .faq-step h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-80);
}

/* ---------- 仍需帮助 ---------- */
.page-faq .faq-help-wrap {
  padding-block: 44px 56px;
}

.page-faq .faq-help {
  display: grid;
  gap: 18px;
  padding: 26px 20px;
  background: var(--ink);
  color: var(--paper);
  box-shadow: var(--shadow-paper);
}

.page-faq .faq-help .eyebrow {
  margin: 0 0 6px;
  color: var(--sand);
}

.page-faq .faq-help h2 {
  margin: 0 0 8px;
  font-size: clamp(22px, 5vw, 32px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.page-faq .faq-help p {
  margin: 0;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--paper-80);
}

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

/* ---------- 桌面布局 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: var(--gap-l);
    padding-block: 34px 60px;
    align-items: start;
  }

  .page-faq .faq-hero__intro {
    padding-top: 6px;
  }

  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
    padding: 34px 32px;
  }

  .page-faq .faq-help .btn {
    justify-self: end;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1.7fr) minmax(280px, 1fr);
    gap: 48px;
    padding-block: 48px 64px;
  }

  .page-faq .faq-glossary {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-q summary {
    padding: 16px 18px;
    font-size: 16px;
  }

  .page-faq .faq-q__body {
    padding: 14px 18px 18px 50px;
    font-size: 14.5px;
  }
}