.page-faq {
  --faq-orange: #FF6A1F;
  --faq-gold: #F2B441;
  --faq-cyan: #35E5D0;
  --faq-haze: #8FA3BF;
  --faq-red: #E2402B;
  --faq-panel: rgba(255, 255, 255, 0.055);
  --faq-panel-strong: rgba(255, 255, 255, 0.09);
  display: block;
  color: var(--text);
  background: var(--deep-blue);
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq a {
  color: inherit;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h, 112px) + 18px) 0 56px;
  background:
    radial-gradient(ellipse at 82% 8%, rgba(255, 106, 31, 0.16), transparent 58%),
    radial-gradient(ellipse at 8% 90%, rgba(53, 229, 208, 0.09), transparent 55%),
    linear-gradient(180deg, var(--night-blue) 0%, var(--deep-blue) 100%);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto -12% -42% auto;
  width: 62%;
  height: 220px;
  background: linear-gradient(96deg, rgba(255, 106, 31, 0.14), rgba(255, 106, 31, 0));
  transform: skewX(-6deg);
  pointer-events: none;
}

.page-faq .breadcrumbs {
  position: relative;
  z-index: 2;
}

.page-faq .faq-hero__split {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  margin-top: 26px;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--faq-cyan);
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 32px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-strong);
  max-width: 20ch;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
  max-width: 60ch;
}

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

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 34px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-hero__stats .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--faq-orange);
}

.page-faq .faq-hero__stat-label {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--haze);
  line-height: 1.5;
}

.page-faq .faq-hero__visual {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-cyan);
  background: var(--faq-panel);
  overflow: hidden;
}

.page-faq .faq-hero__visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  filter: saturate(0.9) contrast(1.05);
}

.page-faq .faq-hero__visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(11, 27, 51, 0) 35%, rgba(6, 14, 28, 0.72) 100%);
  pointer-events: none;
}

.page-faq .faq-hero__caption {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 14px;
  z-index: 2;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--faq-cyan);
}

/* ---------- 主体布局 ---------- */

.page-faq .faq-body {
  position: relative;
  padding: 8px 0 64px;
  background: var(--deep-blue);
}

.page-faq .faq-body::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(143, 163, 191, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 163, 191, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}

.page-faq .faq-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding-top: 26px;
}

/* ---------- 分类轨道 ---------- */

.page-faq .faq-rail {
  border: 1px solid var(--line);
  background: var(--faq-panel);
  padding: 18px 16px;
}

.page-faq .faq-rail__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--haze);
  text-transform: uppercase;
}

.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: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px 7px 10px;
  font-size: 14px;
  line-height: 1.2;
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(6, 14, 28, 0.4);
  transition: border-color 180ms var(--ease), color 180ms var(--ease), background 180ms var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--text-strong);
  border-color: var(--faq-orange);
  background: rgba(255, 106, 31, 0.12);
  outline: none;
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--haze);
}

.page-faq .faq-rail__hint {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--haze);
}

.page-faq .faq-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: none;
}

.page-faq .faq-dot--orange { background: var(--faq-orange); }
.page-faq .faq-dot--gold { background: var(--faq-gold); }
.page-faq .faq-dot--cyan { background: var(--faq-cyan); }
.page-faq .faq-dot--haze { background: var(--faq-haze); }
.page-faq .faq-dot--red { background: var(--faq-red); }

/* ---------- 分类区块 ---------- */

.page-faq .faq-sections {
  display: flex;
  flex-direction: column;
  gap: 52px;
}

.page-faq .faq-cat {
  scroll-margin-top: calc(var(--header-h, 112px) + 20px);
}

.page-faq .faq-cat__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-cat__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 46px;
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 106, 31, 0.6);
  letter-spacing: 0.02em;
}

.page-faq .faq-cat__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--haze);
}

.page-faq .faq-cat__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 23px;
  line-height: 1.32;
  letter-spacing: -0.015em;
  color: var(--text-strong);
}

.page-faq .faq-cat__lead {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--haze);
  max-width: 62ch;
}

.page-faq .faq-cat__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.page-faq .faq-cat__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-cyan);
  background: var(--faq-panel);
  overflow: hidden;
}

.page-faq .faq-cat__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 12 / 7;
  opacity: 0.88;
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  background: var(--faq-panel);
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(255, 106, 31, 0.42);
}

.page-faq .faq-item__q {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq-item__trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  width: 100%;
  padding: 16px 16px 16px 14px;
  border: 0;
  background: transparent;
  color: var(--text-strong);
  text-align: left;
  font-family: inherit;
  font-size: 16px;
  line-height: 1.55;
  cursor: pointer;
  transition: background 180ms var(--ease);
}

.page-faq .faq-item__trigger:hover {
  background: var(--faq-panel-strong);
}

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

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.06em;
  color: var(--faq-orange);
  padding-top: 1px;
}

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

.page-faq .faq-item__mark {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 3px;
  flex: none;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--faq-cyan);
  transition: transform 220ms var(--ease), opacity 220ms var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

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

.page-faq .faq-item__panel {
  overflow: hidden;
  max-height: none;
  transition: max-height 220ms var(--ease), opacity 220ms var(--ease);
}

.page-faq .faq-item__panel[data-open="true"] {
  max-height: 620px;
  opacity: 1;
}

.page-faq .faq-item__panel[data-open="false"] {
  max-height: 0;
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 2px 18px 20px 42px;
  border-top: 1px solid var(--line-cyan);
  background: linear-gradient(180deg, rgba(53, 229, 208, 0.045), rgba(53, 229, 208, 0));
}

.page-faq .faq-item__body p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-item__body p:first-child {
  margin-top: 16px;
}

.page-faq .faq-item__link-row {
  margin-top: 12px;
}

.page-faq .faq-inline-link {
  display: inline-block;
  font-size: 14px;
  color: var(--faq-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 229, 208, 0.5);
  padding-bottom: 2px;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  color: var(--text-strong);
  border-color: var(--text-strong);
  outline: none;
}

/* ---------- 尾部引导 ---------- */

.page-faq .faq-tail {
  position: relative;
  padding: 0 0 70px;
  background: var(--deep-blue);
}

.page-faq .faq-tail__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  padding: 26px 20px;
  border: 1px solid var(--line-cyan);
  background:
    linear-gradient(135deg, rgba(53, 229, 208, 0.07), rgba(11, 27, 51, 0) 60%),
    var(--faq-panel-strong);
}

.page-faq .faq-tail__eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--faq-gold);
  text-transform: uppercase;
}

.page-faq .faq-tail__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  line-height: 1.34;
  letter-spacing: -0.015em;
  color: var(--text-strong);
}

.page-faq .faq-tail__lead {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  max-width: 66ch;
}

.page-faq .faq-tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-start;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-h, 112px) + 26px) 0 72px;
  }

  .page-faq .faq-hero h1 {
    font-size: 44px;
    max-width: 22ch;
  }

  .page-faq .faq-hero__lead {
    font-size: 17px;
  }

  .page-faq .faq-hero__stats .num {
    font-size: 32px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 6px;
  }

  .page-faq .faq-rail__link {
    width: 100%;
    padding: 9px 12px;
  }

  .page-faq .faq-cat__head {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: start;
    gap: 20px;
  }

  .page-faq .faq-cat__num {
    font-size: 62px;
  }

  .page-faq .faq-cat__title {
    font-size: 27px;
  }

  .page-faq .faq-item__trigger {
    padding: 19px 22px 19px 20px;
    font-size: 17px;
    gap: 16px;
  }

  .page-faq .faq-item__body {
    padding: 4px 26px 24px 58px;
  }

  .page-faq .faq-item__body p {
    font-size: 16px;
  }

  .page-faq .faq-tail__panel {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: center;
    padding: 34px 30px;
    gap: 30px;
  }

  .page-faq .faq-tail__title {
    font-size: 25px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero__split {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: 52px;
    align-items: center;
  }

  .page-faq .faq-hero h1 {
    font-size: 52px;
  }

  .page-faq .faq-hero__visual {
    clip-path: polygon(7% 0, 100% 0, 100% 100%, 0 100%);
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 40px;
    padding-top: 40px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h, 112px) + 24px);
    align-self: start;
    padding: 22px 18px;
  }

  .page-faq .faq-cat__grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 30px;
    align-items: start;
  }

  .page-faq .faq-cat__grid--text-only {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-cat__figure {
    position: sticky;
    top: calc(var(--header-h, 112px) + 24px);
  }

  .page-faq .faq-cat__num {
    font-size: 72px;
  }

  .page-faq .faq-cat__grid {
    margin-top: 30px;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-hero h1 {
    font-size: 56px;
  }

  .page-faq .faq-cat__title {
    font-size: 29px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-item__panel,
  .page-faq .faq-item,
  .page-faq .faq-rail__link {
    transition: none;
  }
}