.page-faq {
  --faq-gap: clamp(16px, 3vw, 28px);
  --faq-dot: 8px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  padding-bottom: clamp(48px, 7vw, 96px);
  overflow-x: hidden;
}

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

.page-faq .eyebrow {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--violet);
}

.page-faq .breadcrumb {
  margin: clamp(14px, 2.5vw, 24px) 0 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  padding: clamp(22px, 4vw, 44px) 0 clamp(26px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__copy h1 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 7vw, 58px);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--ink-deep);
}

.page-faq .faq-hero__lede {
  margin: 0 0 20px;
  max-width: 58ch;
  font-size: clamp(15px, 1.7vw, 17.5px);
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

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

.page-faq .figure__frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--mist);
  box-shadow: var(--shadow-paper);
}

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

.page-faq .figure__caption {
  margin: 10px 0 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ---------- 三步排查条 ---------- */
.page-faq .faq-steps {
  margin: clamp(26px, 4vw, 44px) 0 clamp(30px, 4.5vw, 56px);
  padding: clamp(20px, 3vw, 32px);
  background: var(--ink);
  color: var(--on-ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lift);
}

.page-faq .faq-steps .eyebrow {
  color: var(--mist);
}

.page-faq .faq-steps__head h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.3;
  color: var(--paper-raised);
  letter-spacing: -.01em;
}

.page-faq .faq-steps__lede {
  margin: 0 0 22px;
  max-width: 52ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--on-ink-dim);
}

.page-faq .faq-steps__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-steps__item {
  position: relative;
  padding: 14px 14px 14px 16px;
  border-left: 2px solid var(--teal);
  background: rgba(253, 251, 246, .06);
}

.page-faq .faq-steps__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--coral);
}

.page-faq .faq-steps__label {
  margin: 4px 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--paper-raised);
}

.page-faq .faq-steps__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--on-ink-dim);
}

/* ---------- 主体：索引 + 问答 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-index {
  position: sticky;
  top: 0;
  z-index: 6;
  margin-bottom: 6px;
  padding: 10px 12px 12px;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 4px 0 rgba(217, 201, 168, .4);
}

.page-faq .faq-index__title {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 6px 0 0;
  padding: 2px 0 4px;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__item {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--coral);
  background: #fff;
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

.page-faq .faq-index__dot {
  width: var(--faq-dot);
  height: var(--faq-dot);
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--teal);
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--violet);
}

.page-faq .faq-index__note {
  display: none;
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--ink-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-groups {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 96px;
  margin-bottom: clamp(30px, 4.5vw, 54px);
}

.page-faq .faq-group__head {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding-bottom: 10px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--ink);
}

.page-faq .faq-group:target .faq-group__head {
  border-bottom-color: var(--coral-deep);
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.1;
  color: var(--violet);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.8vw, 27px);
  letter-spacing: -.01em;
  color: var(--ink-deep);
}

.page-faq .faq-group__desc {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 折叠问答卡 ---------- */
.page-faq .faq-item {
  margin-bottom: 12px;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 4px 4px 0 rgba(217, 201, 168, .45);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.page-faq .faq-item:hover {
  transform: translateY(-2px);
  border-color: var(--lake);
  box-shadow: 6px 7px 0 rgba(30, 111, 140, .16);
}

.page-faq .faq-item[open] {
  border-color: rgba(28, 154, 139, .6);
  border-left: 3px solid var(--teal);
}

.page-faq .faq-item summary {
  position: relative;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 13px 42px 13px 14px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--ink-deep);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 13px;
  top: 10px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.2;
  color: var(--coral-deep);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: -2px;
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  margin-top: 2px;
  padding: 1px 5px;
  border-radius: var(--radius);
  background: var(--mist);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--lake-deep);
}

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

.page-faq .faq-item__body {
  padding: 0 14px 15px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
  border-top: 1px dashed var(--ink-line);
  margin-top: 2px;
  padding-top: 12px;
}

.page-faq .faq-item__body p {
  margin: 0 0 10px;
}

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

.page-faq .faq-item__body ul {
  margin: 0 0 10px;
  padding-left: 20px;
}

.page-faq .faq-item__body li {
  margin-bottom: 5px;
}

.page-faq .faq-item__body a {
  color: var(--lake);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 版本组内图文 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 20px;
  padding: clamp(16px, 2.5vw, 24px);
  background: var(--mist);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-split__figure {
  margin: 0;
  max-width: 280px;
}

.page-faq .faq-split__note h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.4;
  color: var(--ink-deep);
}

.page-faq .faq-split__note p {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-split__note .btn {
  margin-top: 2px;
}

/* ---------- 收尾联系区 ---------- */
.page-faq .faq-help {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  margin-top: clamp(30px, 4vw, 52px);
  padding: clamp(22px, 3.5vw, 40px);
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-top: 4px solid var(--teal);
  border-radius: var(--radius);
  box-shadow: var(--shadow-paper);
}

.page-faq .faq-help__copy h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--ink-deep);
}

.page-faq .faq-help__copy p {
  margin: 0 0 18px;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

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

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

.page-faq .faq-help__row {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--ink-line);
}

.page-faq .faq-help__term {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--lake-deep);
}

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

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-help__row {
    flex-direction: row;
    gap: 16px;
    align-items: baseline;
  }

  .page-faq .faq-help__term {
    flex: 0 0 96px;
  }

  .page-faq .faq-split {
    grid-template-columns: 220px minmax(0, 1fr);
    align-items: center;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: 1.06fr .94fr;
    align-items: center;
    gap: clamp(28px, 4vw, 60px);
  }

  .page-faq .faq-hero__figure {
    transform: rotate(-1.2deg);
  }

  .page-faq .faq-body {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: clamp(24px, 4vw, 56px);
  }

  .page-faq .faq-index {
    top: 24px;
    padding: 20px 18px;
    background: var(--paper-raised);
    border-left: 3px solid var(--lake);
  }

  .page-faq .faq-index__title {
    font-size: 12px;
    margin-bottom: 12px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-index__item {
    width: 100%;
  }

  .page-faq .faq-index__link {
    width: 100%;
    justify-content: flex-start;
    padding: 8px 10px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    font-size: 14px;
    white-space: normal;
  }

  .page-faq .faq-index__link:hover {
    background: rgba(207, 231, 227, .6);
    border-left-color: var(--teal);
  }

  .page-faq .faq-index__count {
    margin-left: auto;
  }

  .page-faq .faq-index__note {
    display: block;
  }

  .page-faq .faq-item summary {
    font-size: 16.5px;
    padding: 15px 46px 15px 18px;
  }

  .page-faq .faq-item__body {
    padding: 14px 18px 18px;
    font-size: 15px;
  }

  .page-faq .faq-help {
    grid-template-columns: 1.1fr .9fr;
    align-items: start;
  }

  .page-faq .faq-help__list {
    border-top: 0;
    padding-left: clamp(0px, 2vw, 20px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item {
    transition: none;
  }

  .page-faq .faq-item:hover {
    transform: none;
  }

  .page-faq .faq-hero__figure {
    transform: none;
  }
}