.page-faq {
  --faq-rail-w: 236px;
  --faq-gap: clamp(22px, 3vw, 44px);
  --faq-soft-line: rgba(14, 34, 56, .12);
  background: var(--fx-paper);
  color: var(--fx-black);
}

.page-faq .faq-crumb {
  padding-top: clamp(16px, 3vw, 28px);
  padding-bottom: 4px;
}

.page-faq .faq-crumb .fx-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--fx-mist);
}

.page-faq .faq-crumb .fx-breadcrumb__item + .fx-breadcrumb__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--fx-line-strong);
}

.page-faq .faq-crumb .fx-breadcrumb__link {
  color: var(--fx-orange-deep);
  text-decoration: none;
}

.page-faq .faq-crumb .fx-breadcrumb__link:hover {
  text-decoration: underline;
}

/* 首屏 */
.page-faq .faq-hero {
  padding: clamp(24px, 5vw, 64px) 0 clamp(36px, 6vw, 76px);
  background:
    repeating-linear-gradient(90deg, rgba(14, 34, 56, .045) 0 1px, transparent 1px 34px),
    var(--fx-paper-3);
  border-bottom: 1px solid var(--faq-soft-line);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  grid-template-columns: 1fr;
  align-items: start;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(30px, 6vw, 56px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--fx-ink);
  overflow-wrap: anywhere;
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: #2b3542;
}

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

.page-faq .faq-hero__stats {
  display: grid;
  gap: 1px;
  background: var(--fx-line);
  border-top: 3px solid var(--fx-orange);
  padding-top: 0;
}

.page-faq .faq-hero__stat {
  display: grid;
  gap: 2px;
  padding: 16px 18px;
  background: var(--fx-paper-3);
}

.page-faq .faq-hero__stat-num {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--fx-teal);
  letter-spacing: -.02em;
}

.page-faq .faq-hero__stat-label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--fx-mist);
}

/* 四类入口 */
.page-faq .faq-quick {
  padding: clamp(28px, 4vw, 56px) 0 0;
}

.page-faq .faq-quick__grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-faq .faq-quick__item {
  position: relative;
  display: grid;
  gap: 4px;
  padding: 18px 18px 18px 22px;
  text-decoration: none;
  color: inherit;
  background: var(--fx-paper-2);
  border-left: 4px solid var(--fx-orange);
  transition: transform .18s var(--fx-ease), background .18s var(--fx-ease);
}

.page-faq .faq-quick__item:nth-child(2) {
  border-left-color: var(--fx-wine);
}

.page-faq .faq-quick__item:nth-child(3) {
  border-left-color: var(--fx-indigo);
}

.page-faq .faq-quick__item:nth-child(4) {
  border-left-color: var(--fx-teal);
}

.page-faq .faq-quick__item:hover,
.page-faq .faq-quick__item:focus-visible {
  transform: translateY(-3px);
  background: var(--fx-paper-3);
}

.page-faq .faq-quick__num {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--fx-orange-deep);
}

.page-faq .faq-quick__name {
  font-size: 17px;
  font-weight: 700;
  color: var(--fx-ink);
}

.page-faq .faq-quick__desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--fx-mist);
}

/* 主体双栏 */
.page-faq .faq-body {
  display: grid;
  gap: var(--faq-gap);
  grid-template-columns: 1fr;
  padding-top: clamp(36px, 5vw, 64px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .faq-rail {
  border-top: 2px solid var(--fx-ink);
  padding-top: 14px;
}

.page-faq .faq-rail__eyebrow {
  margin: 0 0 12px;
}

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

.page-faq .faq-rail__link {
  display: block;
  padding: 8px 12px;
  min-height: 40px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--fx-ink);
  text-decoration: none;
  background: var(--fx-paper-2);
  border-bottom: 2px solid transparent;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: var(--fx-paper-3);
  border-bottom-color: var(--fx-orange);
  color: var(--fx-orange-deep);
}

.page-faq .faq-rail__note {
  margin: 16px 0 0;
  font-size: 12px;
  line-height: 1.7;
}

.page-faq .faq-groups {
  display: grid;
  gap: clamp(44px, 6vw, 88px);
  min-width: 0;
}

/* 问答组 */
.page-faq .faq-group {
  scroll-margin-top: 24px;
  min-width: 0;
}

.page-faq .faq-group__head {
  display: grid;
  gap: 10px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--faq-soft-line);
}

.page-faq .faq-group__num {
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--fx-orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.25;
  color: var(--fx-ink);
}

.page-faq .faq-group__lede {
  margin: 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.85;
  color: #33404f;
}

.page-faq .faq-list {
  margin-top: 20px;
  border-top: 1px solid var(--faq-soft-line);
}

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

.page-faq .faq-item__summary {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--fx-ink);
  min-height: 44px;
}

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

.page-faq .faq-item__summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--fx-font-mono);
  font-size: 18px;
  color: var(--fx-orange);
}

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

.page-faq .faq-item__summary:hover {
  color: var(--fx-orange-deep);
}

.page-faq .faq-item__num {
  flex: none;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--fx-orange-deep);
  padding-top: 4px;
}

.page-faq .faq-item__body {
  padding: 0 0 18px 34px;
  animation: faq-fade .18s var(--fx-ease) both;
}

.page-faq .faq-item__body p {
  margin: 0 0 10px;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.85;
  color: #2b3542;
}

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

@keyframes faq-fade {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: none; }
}

/* 安装组图文 */
.page-faq .faq-install__split {
  display: grid;
  gap: 22px;
  grid-template-columns: 1fr;
  margin-top: 20px;
}

.page-faq .faq-figure {
  margin: 0;
  background: var(--fx-paper-2);
  padding: 10px 10px 12px;
  border: 1px solid var(--faq-soft-line);
}

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

.page-faq .faq-figure--wide img {
  aspect-ratio: 3 / 2;
}

.page-faq .faq-figure__cap {
  margin-top: 10px;
  font-family: var(--fx-font-serif);
  font-size: 12px;
  line-height: 1.7;
  color: var(--fx-mist);
}

.page-faq .faq-figure--wide {
  margin-top: 26px;
}

/* 五步 */
.page-faq .faq-steps {
  display: grid;
  gap: 0;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--faq-soft-line);
}

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

.page-faq .faq-steps__num {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  font-size: 13px;
  font-weight: 700;
  color: var(--fx-paper-3);
  background: var(--fx-orange);
}

.page-faq .faq-steps__item strong {
  display: block;
  font-size: 15px;
  color: var(--fx-ink);
}

.page-faq .faq-steps__item p {
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: #3a4655;
}

/* 行内链接 */
.page-faq .faq-inline-link {
  margin: 20px 0 0;
  font-size: 14px;
}

.page-faq .faq-inline-link .fx-link {
  color: var(--fx-orange-deep);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-faq .faq-inline-link .fx-link:hover {
  color: var(--fx-indigo);
}

/* 自查表 */
.page-faq .faq-table {
  width: 100%;
  margin-top: 22px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .faq-table thead th {
  display: none;
}

.page-faq .faq-table tr {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid var(--faq-soft-line);
}

.page-faq .faq-table td {
  display: grid;
  grid-template-columns: 5.2em 1fr;
  gap: 10px;
  padding: 4px 0;
  line-height: 1.7;
  color: #2b3542;
  text-align: left;
}

.page-faq .faq-table td::before {
  content: attr(data-label);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--fx-mist);
}

.page-faq .faq-table td:first-child {
  font-weight: 600;
  color: var(--fx-ink);
}

.page-faq .faq-flag {
  display: inline-block;
  margin-right: 6px;
  padding: 1px 7px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--fx-paper-3);
  vertical-align: 1px;
}

.page-faq .faq-flag--hot {
  background: var(--fx-orange-deep);
}

.page-faq .faq-flag--go {
  background: var(--fx-teal);
}

/* 联系支持 */
.page-faq .faq-contact {
  scroll-margin-top: 24px;
  padding: clamp(28px, 4vw, 44px) clamp(18px, 3vw, 36px);
  background: var(--fx-ink);
  color: var(--fx-paper);
  border-top: 4px solid var(--fx-orange);
}

.page-faq .faq-contact__head {
  display: grid;
  gap: 10px;
  max-width: 40em;
}

.page-faq .faq-contact__title {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.28;
  color: var(--fx-paper);
}

.page-faq .faq-contact__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--fx-on-dark);
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
  margin-top: 26px;
}

.page-faq .faq-paper-card {
  padding: 20px 18px;
  background: var(--fx-paper-3);
  color: var(--fx-black);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, .18);
}

.page-faq .faq-paper-card .fx-eyebrow {
  margin: 0 0 8px;
}

.page-faq .faq-contact__value {
  margin: 0 0 10px;
  font-size: clamp(14px, 2vw, 17px);
  font-weight: 600;
  color: var(--fx-ink);
  word-break: break-all;
}

.page-faq .faq-copy-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.page-faq .faq-copy {
  min-height: 44px;
  border-color: var(--fx-ink) !important;
  color: var(--fx-ink) !important;
}

.page-faq .faq-copy:hover {
  background: var(--fx-ink) !important;
  color: var(--fx-paper) !important;
}

.page-faq .faq-copy__hint {
  font-size: 12px;
  color: var(--fx-teal);
}

.page-faq .faq-paper-card .fx-annotation {
  margin: 0;
  font-size: 12px;
  line-height: 1.75;
}

.page-faq .faq-contact__addr {
  margin-top: 10px !important;
}

.page-faq .faq-contact__more {
  margin: 24px 0 0;
  font-size: 13px;
  line-height: 1.9;
  color: var(--fx-on-dark);
}

.page-faq .faq-contact__more .fx-link {
  color: var(--fx-paper);
  text-decoration: underline;
  text-decoration-color: var(--fx-orange);
  text-underline-offset: 3px;
}

.page-faq .faq-contact__more .fx-link:hover {
  color: var(--fx-orange-soft);
}

/* 断点：平板起双栏 */
@media (min-width: 720px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(240px, .65fr);
  }

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

  .page-faq .faq-install__split {
    grid-template-columns: minmax(0, 1.5fr) minmax(200px, .8fr);
    align-items: start;
  }

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

  .page-faq .faq-table thead th {
    display: table-cell;
    padding: 10px 12px;
    font-size: 12px;
    letter-spacing: .06em;
    text-align: left;
    color: var(--fx-paper);
    background: var(--fx-indigo);
  }

  .page-faq .faq-table tr {
    display: table-row;
    padding: 0;
  }

  .page-faq .faq-table td {
    display: table-cell;
    padding: 12px;
    vertical-align: top;
    border-bottom: 1px solid var(--faq-soft-line);
  }

  .page-faq .faq-table td::before {
    content: none;
  }

  .page-faq .faq-table tbody tr:nth-child(even) td {
    background: var(--fx-paper-2);
  }
}

/* 断点：桌面左目录右问答 */
@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-rail__list {
    display: grid;
    gap: 2px;
  }

  .page-faq .faq-rail__link {
    min-height: 44px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--faq-soft-line);
  }

  .page-faq .faq-quick__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-hero__title {
    font-size: clamp(38px, 4.2vw, 54px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick__item,
  .page-faq .faq-item__body {
    transition: none;
    animation: none;
  }
}
</main>