.page-faq {
  --faq-rule: 2px solid var(--line);
  color: var(--paper);
  background: var(--ink);
  overflow-x: hidden;
}

.page-faq .container {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--haze);
  padding-top: clamp(18px, 3vw, 30px);
}

.page-faq .breadcrumb a {
  color: var(--haze);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.page-faq .breadcrumb__sep {
  color: var(--line);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-bottom: clamp(24px, 4vw, 40px);
  position: relative;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3.4vw, 40px);
  margin-top: clamp(18px, 3vw, 34px);
  align-items: start;
}

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

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.03em;
  font-size: clamp(30px, 7.2vw, 60px);
  line-height: 1.04;
  margin: 12px 0 0;
  color: var(--paper);
  max-width: 16em;
}

.page-faq .faq-hero__title::after {
  content: "";
  display: block;
  width: clamp(56px, 12vw, 104px);
  height: 6px;
  margin-top: 20px;
  background: var(--signal);
}

.page-faq .lede {
  margin: 18px 0 0;
  max-width: 42em;
  font-size: clamp(15.5px, 1.9vw, 17.5px);
  line-height: 1.78;
  color: var(--haze);
}

.page-faq .faq-hero__aside {
  display: grid;
  gap: 0;
  border: var(--faq-rule);
  background: var(--slate);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .faq-snap {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: baseline;
  gap: 6px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-snap:last-child {
  border-bottom: 0;
}

.page-faq .faq-snap__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 4.6vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--signal);
}

.page-faq .faq-snap__unit {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--haze);
  white-space: nowrap;
}

.page-faq .faq-snap__text {
  grid-column: 1 / -1;
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
  opacity: .88;
}

/* ---------- 分类跳转 ---------- */
.page-faq .faq-jump {
  display: flex;
  gap: 8px;
  margin-top: clamp(22px, 3.4vw, 34px);
  padding-bottom: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-jump::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-jump__link {
  flex: none;
  display: inline-block;
  padding: 9px 16px;
  border: var(--faq-rule);
  border-radius: var(--pill);
  background: var(--slate);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .18s var(--ease), color .18s var(--ease), background .18s var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
  background: rgba(255, 106, 26, .08);
}

/* ---------- 通栏图 ---------- */
.page-faq .faq-banner {
  padding: clamp(20px, 3.4vw, 36px) 0 clamp(8px, 2vw, 18px);
}

.page-faq .faq-banner__figure {
  margin: 0;
  border: var(--faq-rule);
  background: var(--slate);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-banner__figure .figure__img,
.page-faq .faq-banner__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 1400 / 600;
  filter: saturate(.82) contrast(1.06);
}

.page-faq .faq-banner__figure .figure__caption {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .03em;
  color: var(--haze);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  padding: clamp(38px, 6vw, 70px) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: var(--header-offset);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2.4vw, 22px);
  align-items: end;
  margin-bottom: clamp(18px, 2.8vw, 28px);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: clamp(38px, 8vw, 72px);
  font-weight: 700;
  line-height: .78;
  letter-spacing: -0.05em;
  color: var(--haze);
  opacity: .32;
}

.page-faq .faq-group__title {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.025em;
  font-size: clamp(22px, 4.4vw, 36px);
  line-height: 1.14;
  margin: 0;
  color: var(--paper);
}

.page-faq .faq-group__note {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--haze);
}

/* ---------- 手风琴 ---------- */
.page-faq .accordion {
  border: var(--faq-rule);
  background: var(--slate);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .accordion__item {
  border-bottom: 1px solid var(--line);
  transition: background .2s var(--ease);
}

.page-faq .accordion__item:last-child {
  border-bottom: 0;
}

.page-faq .accordion__item:has(.accordion__trigger[aria-expanded="true"]) {
  background: rgba(255, 106, 26, .05);
}

.page-faq .accordion__trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 16px 18px 16px 16px;
  border: 0;
  border-left: 4px solid transparent;
  background: transparent;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: clamp(15px, 2.1vw, 16.5px);
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  transition: border-color .18s var(--ease), background .18s var(--ease);
}

.page-faq .accordion__trigger:hover {
  background: rgba(245, 241, 232, .05);
}

.page-faq .accordion__trigger:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -3px;
}

.page-faq .accordion__trigger[aria-expanded="true"] {
  border-left-color: var(--signal);
}

.page-faq .accordion__index {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--haze);
  white-space: nowrap;
  transition: color .18s var(--ease);
}

.page-faq .accordion__index::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 2px;
  margin-right: 7px;
  vertical-align: 3px;
  background: var(--line);
  transition: background .18s var(--ease);
}

.page-faq .accordion__trigger[aria-expanded="true"] .accordion__index {
  color: var(--signal);
}

.page-faq .accordion__trigger[aria-expanded="true"] .accordion__index::before {
  background: var(--signal);
}

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

.page-faq .accordion__sign {
  position: relative;
  width: 16px;
  height: 16px;
  flex: none;
  justify-self: end;
}

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

.page-faq .accordion__sign::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 2px;
}

.page-faq .accordion__sign::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 2px;
}

.page-faq .accordion__trigger[aria-expanded="true"] .accordion__sign::before {
  background: var(--signal);
}

.page-faq .accordion__trigger[aria-expanded="true"] .accordion__sign::after {
  transform: scaleY(0);
}

.page-faq .accordion__panel {
  padding: 0 18px 18px 20px;
}

.page-faq .accordion__panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--haze);
}

.page-faq .accordion__panel a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 176, 120, .45);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .accordion__panel a:hover,
.page-faq .accordion__panel a:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

/* ---------- 纠错流程通栏 ---------- */
.page-faq .flow-band {
  position: relative;
  background: var(--arch);
  color: var(--black);
  border-top: 3px solid var(--black);
  border-bottom: 3px solid var(--black);
  padding: clamp(30px, 5.4vw, 54px) 0;
  margin: clamp(10px, 2vw, 20px) 0;
}

.page-faq .flow-band::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(5, 16, 28, .09) 0 1px,
    transparent 1px 44px
  );
}

.page-faq .flow-band__head {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .flow-band__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--signal);
}

.page-faq .flow-band__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.025em;
  font-size: clamp(21px, 4.2vw, 34px);
  line-height: 1.16;
  color: var(--black);
}

.page-faq .flow-steps {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: flow;
}

.page-faq .flow-step {
  border-top: 4px solid var(--black);
  padding-top: 12px;
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-faq .flow-step:hover {
  border-top-color: var(--signal);
  transform: translateY(-3px);
}

.page-faq .flow-step__num {
  display: inline-block;
  padding: 2px 8px;
  background: var(--black);
  color: var(--signal);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .1em;
}

.page-faq .flow-step__title {
  margin: 12px 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--black);
}

.page-faq .flow-step__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(5, 16, 28, .78);
}

/* ---------- 纠错组双栏 ---------- */
.page-faq .faq-group__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3.2vw, 34px);
  align-items: start;
}

.page-faq .faq-side-figure {
  margin: 0;
  border: var(--faq-rule);
  background: var(--slate);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .faq-side-figure .figure__img,
.page-faq .faq-side-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  filter: saturate(.78) contrast(1.05);
}

.page-faq .faq-side-figure .figure__caption {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--haze);
}

/* ---------- 页尾行动区 ---------- */
.page-faq .faq-cta {
  border-top: 1px solid var(--line);
  background: var(--slate);
  padding: clamp(32px, 5.4vw, 56px) 0;
}

.page-faq .faq-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 32px);
  align-items: center;
}

.page-faq .faq-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.025em;
  font-size: clamp(21px, 4vw, 32px);
  line-height: 1.18;
  color: var(--paper);
}

.page-faq .faq-cta__note {
  margin: 12px 0 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.72;
  color: var(--haze);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 动效 ---------- */
.page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .22s var(--ease), transform .22s var(--ease);
}

.page-faq [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-faq .flow-step:hover {
    transform: none;
  }

  .page-faq .accordion__sign::before,
  .page-faq .accordion__sign::after {
    transition: none;
  }
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .flow-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 20px;
  }

  .page-faq .faq-cta__actions {
    gap: 14px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-group__body {
    grid-template-columns: minmax(0, 1.75fr) minmax(0, 1fr);
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: clamp(24px, 4vw, 48px);
  }
}

@media (min-width: 1080px) {
  .page-faq .flow-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 26px;
  }

  .page-faq .faq-banner__figure .figure__img,
  .page-faq .faq-banner__figure img {
    aspect-ratio: 1400 / 480;
  }
}

@media (max-width: 560px) {
  .page-faq .accordion__trigger {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
  }

  .page-faq .accordion__index {
    grid-column: 1 / -1;
  }

  .page-faq .accordion__panel {
    padding-left: 16px;
  }

  .page-faq .faq-cta__actions .btn {
    width: 100%;
    text-align: center;
  }
}