.page-faq {
  --faq-line: rgba(255, 255, 255, .1);
  --faq-soft: rgba(255, 255, 255, .06);
  position: relative;
  padding: clamp(18px, 2.6vw, 34px) 0 clamp(56px, 7vw, 96px);
  overflow-x: clip;
  background:
    radial-gradient(900px 460px at 88% -6%, rgba(200, 16, 46, .22), transparent 64%),
    radial-gradient(700px 420px at -8% 14%, rgba(53, 214, 224, .08), transparent 60%);
}

.page-faq .breadcrumb {
  margin-bottom: 16px;
  font-size: 12.5px;
  color: var(--ao-muted);
}

.page-faq .breadcrumb a {
  color: var(--ao-muted);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--ao-ink);
  border-bottom: 1px solid var(--ao-cyan);
}

.page-faq .page-head {
  padding-bottom: clamp(20px, 3vw, 32px);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .page-head__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ao-red);
}

.page-faq .page-head__title {
  max-width: 17em;
  margin-top: 10px;
}

.page-faq .page-lead {
  max-width: 60ch;
  margin-top: 14px;
  color: var(--ao-muted);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .section + .section {
  margin-top: clamp(44px, 6vw, 88px);
}

.page-faq .section,
.page-faq .qa {
  scroll-margin-top: 112px;
}

/* ── 新手七步 ───────────────────────────── */
.page-faq .steps-band {
  position: relative;
  isolation: isolate;
  margin-top: clamp(28px, 4vw, 48px);
  padding: clamp(22px, 3vw, 34px) clamp(16px, 2.4vw, 30px) clamp(20px, 3vw, 30px);
  background: var(--ao-900);
  border: 1px solid var(--ao-700);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .steps-band__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .15;
  filter: grayscale(.45) contrast(1.15);
  z-index: -1;
  pointer-events: none;
}

.page-faq .steps-band__inner {
  position: relative;
}

.page-faq .faq-steps {
  list-style: none;
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  padding: 2px 0 8px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(216px, 1fr);
  gap: var(--gap);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
}

.page-faq .faq-steps__item {
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 14px 18px;
  background: var(--ao-800);
  border: 1px solid var(--ao-700);
  border-top: 2px solid var(--ao-red);
  border-radius: var(--radius);
}

.page-faq .faq-steps__no {
  font-size: 24px;
  line-height: 1;
  color: var(--ao-red);
  letter-spacing: .04em;
}

.page-faq .faq-steps__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: .03em;
  color: var(--ao-ink);
}

.page-faq .faq-steps__desc {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ao-muted);
}

/* ── 场景问答 ───────────────────────────── */
.page-faq .q-tabs .tabs__list {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  border-bottom: 1px solid var(--faq-line);
  scrollbar-width: none;
}

.page-faq .q-tabs .tabs__list::-webkit-scrollbar {
  display: none;
}

.page-faq .q-tabs .tabs__tab {
  flex: none;
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--ao-muted);
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: .04em;
  padding: 12px 14px;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: color .18s ease, border-color .18s ease;
}

.page-faq .q-tabs .tabs__tab:hover {
  color: var(--ao-ink);
}

.page-faq .q-tabs .tabs__tab[aria-selected="true"] {
  color: var(--ao-ink);
  border-bottom-color: var(--ao-red);
}

.page-faq .q-tabs .tabs__tab:focus-visible {
  outline: 2px solid var(--ao-cyan);
  outline-offset: 2px;
}

.page-faq .tabs__count {
  margin-left: 7px;
  font-size: 11.5px;
  color: var(--ao-muted);
  letter-spacing: .06em;
}

.page-faq .tabs__panel[hidden] {
  display: none;
}

.page-faq .tabs__panel {
  margin-top: clamp(14px, 2vw, 22px);
}

.page-faq .tabs__panel:focus-visible {
  outline: 2px solid var(--ao-cyan);
  outline-offset: 6px;
}

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

.page-faq .qa {
  border-left: 2px solid var(--faq-line);
  padding-left: 14px;
  transition: border-color .2s ease;
}

.page-faq .qa[open] {
  border-left-color: var(--ao-red);
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 13px 32px 13px 0;
  position: relative;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ao-ink);
  border-bottom: 1px solid var(--faq-soft);
}

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

.page-faq .qa__q:hover {
  color: var(--ao-red-hi);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--ao-cyan);
  outline-offset: 3px;
}

.page-faq .qa__no {
  flex: none;
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--ao-muted);
}

.page-faq .qa[open] .qa__no {
  color: var(--ao-red);
}

.page-faq .qa__sign {
  position: absolute;
  right: 8px;
  top: 20px;
  width: 11px;
  height: 11px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--ao-muted);
  transition: transform .2s ease, background .2s ease;
}

.page-faq .qa__sign::before {
  top: 5px;
  left: 0;
  width: 11px;
  height: 1.5px;
}

.page-faq .qa__sign::after {
  left: 5px;
  top: 0;
  width: 1.5px;
  height: 11px;
}

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

.page-faq .qa[open] .qa__sign::before {
  background: var(--ao-red-hi);
}

.page-faq .qa__a {
  padding: 0 34px 16px 0;
}

.page-faq .qa__a p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ao-muted);
  max-width: 62ch;
}

/* ── 数据口径 ───────────────────────────── */
.page-faq .metrics {
  padding: clamp(20px, 2.6vw, 32px);
  background: var(--ao-800);
  border: 1px solid var(--ao-700);
  border-radius: var(--radius);
}

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

.page-faq .metrics__item {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-top: 1px solid var(--faq-line);
}

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

.page-faq .metrics__label {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: .03em;
  color: var(--ao-ink);
}

.page-faq .metrics__val {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.1;
  color: var(--ao-green);
}

.page-faq .metrics__item:nth-child(2) .metrics__val {
  color: var(--ao-cyan);
}

.page-faq .metrics__item:nth-child(3) .metrics__val {
  color: var(--ao-amber);
}

.page-faq .metrics__note {
  margin: 0;
  max-width: 66ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ao-muted);
}

.page-faq .metrics__note .num {
  color: var(--ao-cyan);
}

.page-faq .metrics__footnote {
  margin: clamp(16px, 2vw, 22px) 0 0;
  padding: 12px 0 0 14px;
  border-top: 1px solid var(--faq-line);
  border-left: 2px solid var(--ao-cyan);
  font-size: 13px;
  line-height: 1.8;
  color: var(--ao-muted);
  max-width: 70ch;
}

/* ── 自查清单 ───────────────────────────── */
.page-faq .audit {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-faq .checks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .checks__item {
  position: relative;
}

.page-faq .checks__box {
  appearance: none;
  -webkit-appearance: none;
  position: absolute;
  top: 15px;
  right: 14px;
  width: 22px;
  height: 22px;
  margin: 0;
  border: 1px solid var(--ao-700);
  border-radius: var(--radius);
  background: var(--ao-900);
  cursor: pointer;
  z-index: 2;
}

.page-faq .checks__box:checked {
  background: var(--ao-green);
  border-color: var(--ao-green);
}

.page-faq .checks__box:checked::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 3px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ao-950);
  border-bottom: 2px solid var(--ao-950);
  transform: rotate(42deg);
}

.page-faq .checks__box:focus-visible {
  outline: 2px solid var(--ao-cyan);
  outline-offset: 2px;
}

.page-faq .checks__label {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 12px;
  align-items: baseline;
  padding: 14px 48px 14px 16px;
  background: var(--ao-800);
  border: 1px solid var(--ao-700);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color .2s ease, background .2s ease;
}

.page-faq .checks__label:hover {
  border-color: rgba(255, 255, 255, .2);
}

.page-faq .checks__box:checked ~ .checks__label {
  border-color: rgba(43, 224, 138, .45);
  background: rgba(43, 224, 138, .05);
}

.page-faq .checks__no {
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--ao-muted);
}

.page-faq .checks__box:checked ~ .checks__label .checks__no {
  color: var(--ao-green);
}

.page-faq .checks__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--ao-ink);
}

.page-faq .checks__desc {
  grid-column: 2;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ao-muted);
}

.page-faq .audit__figure {
  margin: 0;
  border: 1px solid var(--ao-700);
  border-radius: var(--radius);
  background: var(--ao-900);
  overflow: hidden;
}

.page-faq .audit__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  filter: saturate(.55);
}

.page-faq .audit__figure figcaption {
  padding: 12px 14px;
  border-top: 1px solid var(--ao-700);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ao-muted);
}

/* ── 收束 ───────────────────────────────── */
.page-faq .resolve {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(22px, 3vw, 34px);
  background: var(--ao-800);
  border: 1px solid var(--ao-700);
  border-radius: var(--radius);
}

.page-faq .resolve__lead {
  margin: 12px 0 18px;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ao-muted);
}

.page-faq .resolve__fields {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .resolve__fields li {
  display: flex;
  gap: 12px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ao-ink);
}

.page-faq .resolve__fields .num {
  flex: none;
  color: var(--ao-cyan);
  font-size: 12.5px;
  letter-spacing: .08em;
  padding-top: 3px;
}

.page-faq .resolve__hint {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--ao-muted);
}

.page-faq .resolve__hint a {
  color: var(--ao-ink);
  text-decoration: none;
  border-bottom: 1px solid var(--ao-cyan);
}

.page-faq .resolve__hint a:hover,
.page-faq .resolve__hint a:focus-visible {
  color: var(--ao-cyan);
}

.page-faq .resolve__aside {
  padding: 18px;
  display: grid;
  gap: 10px;
  align-content: start;
  border-radius: var(--radius);
}

.page-faq .resolve__stat {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--ao-ink);
}

.page-faq .resolve__stat .num {
  font-size: 26px;
  color: var(--ao-green);
  margin-right: 6px;
}

.page-faq .resolve__aside-note {
  margin: 0;
  padding-top: 10px;
  border-top: 1px solid var(--ao-glass-line);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--ao-muted);
}

/* ── 桌面布局 ───────────────────────────── */
@media (min-width: 1024px) {
  .page-faq .faq-steps {
    grid-auto-flow: row;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    grid-auto-columns: auto;
    overflow-x: visible;
  }
}

@media (min-width: 900px) {
  .page-faq .q-tabs {
    display: grid;
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(22px, 3vw, 44px);
    align-items: start;
  }

  .page-faq .q-tabs .tabs__list {
    flex-direction: column;
    gap: 2px;
    border-bottom: 0;
    border-left: 1px solid var(--faq-line);
    overflow: visible;
    position: sticky;
    top: 104px;
  }

  .page-faq .q-tabs .tabs__tab {
    text-align: left;
    border-bottom: 0;
    border-left: 2px solid transparent;
    padding: 13px 16px;
    font-size: 17px;
  }

  .page-faq .q-tabs .tabs__tab[aria-selected="true"] {
    border-left-color: var(--ao-red);
    border-bottom-color: transparent;
    background: linear-gradient(90deg, rgba(200, 16, 46, .2), rgba(200, 16, 46, 0) 78%);
  }

  .page-faq .tabs__panel {
    margin-top: 0;
  }

  .page-faq .metrics__item {
    grid-template-columns: minmax(200px, 260px) minmax(0, 1fr);
    align-items: baseline;
    gap: 8px 24px;
    padding: 22px 0;
  }

  .page-faq .metrics__item .metrics__note {
    grid-column: 2;
    grid-row: 2;
  }

  .page-faq .metrics__val {
    grid-column: 2;
    grid-row: 1;
    text-align: right;
    justify-self: end;
  }

  .page-faq .audit {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }

  .page-faq .resolve {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
    align-items: start;
  }
}

@media (max-width: 520px) {
  .page-faq .page-head__title {
    font-size: clamp(24px, 7vw, 32px);
  }

  .page-faq .qa__q {
    font-size: 14.5px;
    padding-right: 26px;
  }

  .page-faq .qa__a {
    padding-right: 8px;
  }

  .page-faq .checks__label {
    padding-right: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after,
  .page-faq .checks__label,
  .page-faq .q-tabs .tabs__tab {
    transition: none !important;
    animation: none !important;
  }
}