.page-faq {
  --faq-panel: #0A1E1B;
  --faq-edge: #16342D;
  --faq-dot: rgba(43, 240, 200, 0.18);
  background: var(--ink);
  color: var(--text);
}

/* ── 首屏 ───────────────────────────────────────── */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + 28px) 0 48px;
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(43, 240, 200, 0.18), transparent 58%),
    radial-gradient(90% 70% at 0% 100%, rgba(255, 122, 47, 0.12), transparent 62%),
    linear-gradient(165deg, var(--stand) 0%, var(--ink) 72%);
  border-bottom: 2px solid var(--faq-edge);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(22, 52, 45, 0.85) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(22, 52, 45, 0.85) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.4;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .st-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-faq .st-breadcrumb__list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--faq-edge);
}

.page-faq .st-breadcrumb__list a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .st-breadcrumb__list a:hover,
.page-faq .st-breadcrumb__list a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .st-breadcrumb__list [aria-current="page"] {
  color: var(--ice);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 28px;
  align-items: start;
}

.page-faq .faq-hero__copy h1 {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__copy .st-lede {
  max-width: 46ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__chips a {
  display: inline-block;
  padding: 7px 12px;
  border: 1px solid var(--faq-edge);
  background: rgba(10, 30, 27, 0.8);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ice);
  text-decoration: none;
  transition: border-color 120ms var(--ease), color 120ms var(--ease), transform 120ms var(--ease);
}

.page-faq .faq-hero__chips a:hover,
.page-faq .faq-hero__chips a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 2px solid var(--faq-edge);
  background: var(--stand);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-faq .faq-hero__cap {
  padding: 9px 14px;
  border-top: 2px solid var(--faq-edge);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* ── 三条捷径 ───────────────────────────────────── */
.page-faq .faq-quick {
  padding-top: 48px;
}

.page-faq .faq-quick__grid {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.page-faq .faq-quick__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 18px 18px;
  border: 2px solid var(--faq-edge);
  background: var(--faq-panel);
  color: var(--text);
  text-decoration: none;
  box-shadow: var(--shadow-hard);
  transition: border-color 160ms var(--ease), transform 160ms var(--ease), box-shadow 160ms var(--ease);
}

.page-faq .faq-quick__card:nth-child(2) {
  border-top-color: var(--violet);
}

.page-faq .faq-quick__card:nth-child(3) {
  border-top-color: var(--orange);
}

.page-faq .faq-quick__card:hover,
.page-faq .faq-quick__card:focus-visible {
  border-color: var(--cyan);
  transform: translate(2px, 2px);
  box-shadow: var(--shadow-press);
}

.page-faq .faq-quick__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-quick__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-quick__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-quick__go {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--yellow);
}

/* ── 正文两栏 ───────────────────────────────────── */
.page-faq .faq-body {
  padding-top: 56px;
}

.page-faq .faq-body__grid {
  display: grid;
  gap: 32px;
  align-items: start;
}

.page-faq .faq-index {
  border: 2px solid var(--faq-edge);
  background: var(--faq-panel);
  padding: 18px 16px;
}

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

.page-faq .faq-index__list {
  display: grid;
  gap: 2px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  transition: border-color 120ms var(--ease), background 120ms var(--ease), color 120ms var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(43, 240, 200, 0.08);
  color: var(--ice);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
}

.page-faq .faq-index__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mist);
}

.page-faq .faq-index__helper {
  display: block;
  padding-top: 12px;
  border-top: 1px solid var(--faq-edge);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
  text-decoration: none;
}

.page-faq .faq-index__helper:hover,
.page-faq .faq-index__helper:focus-visible {
  color: var(--yellow);
  text-decoration: underline;
}

.page-faq .faq-answers {
  display: grid;
  gap: 40px;
  min-width: 0;
}

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

.page-faq .faq-group__head {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--faq-edge);
}

.page-faq .faq-group__head .st-h2 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 3.4vw, 28px);
  letter-spacing: -0.01em;
  color: var(--paper);
}

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

/* ── 折叠问答 ───────────────────────────────────── */
.page-faq .faq-item {
  border: 2px solid var(--faq-edge);
  background: var(--faq-panel);
  margin-bottom: 10px;
  transition: border-color 160ms var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--cyan);
}

.page-faq .faq-item__sum {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
}

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

.page-faq .faq-item__sum::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
  transition: transform 160ms var(--ease);
}

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

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

.page-faq .faq-item__no {
  flex: none;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .faq-item__body {
  padding: 0 16px 16px 16px;
  border-top: 1px solid var(--faq-edge);
  margin-top: -1px;
  padding-top: 12px;
}

.page-faq .faq-item__body p {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
}

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

.page-faq .faq-item__steps {
  margin: 8px 0 0;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-item__steps li {
  margin-bottom: 4px;
}

.page-faq .faq-item__steps li::marker {
  font-family: var(--font-mono);
  color: var(--yellow);
}

/* ── 四步流程 ───────────────────────────────────── */
.page-faq .faq-steps-sec {
  padding-top: 64px;
}

.page-faq .faq-steps-sec__grid {
  display: grid;
  gap: 32px;
  align-items: start;
}

.page-faq .faq-steps-sec__copy .st-h2 {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 4vw, 34px);
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-steps-sec__lede {
  max-width: 52ch;
  margin: 0 0 26px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

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

.page-faq .faq-steps__item {
  position: relative;
  padding: 0 0 26px 52px;
}

.page-faq .faq-steps__item::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 34px;
  bottom: 2px;
  width: 2px;
  background: linear-gradient(to bottom, var(--cyan), var(--faq-edge));
}

.page-faq .faq-steps__item:last-child {
  padding-bottom: 0;
}

.page-faq .faq-steps__item:last-child::before {
  display: none;
}

.page-faq .faq-steps__dot {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  background: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--cyan);
}

.page-faq .faq-steps__item--current .faq-steps__dot {
  background: var(--cyan);
  color: var(--ink);
  box-shadow: 0 0 0 4px var(--faq-dot);
}

.page-faq .faq-steps__name {
  margin: 3px 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--ice);
}

.page-faq .faq-steps__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-steps-sec__media {
  margin: 0;
  border: 2px solid var(--faq-edge);
  background: var(--faq-panel);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-steps-sec__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-steps-sec__cap {
  padding: 9px 14px;
  border-top: 2px solid var(--faq-edge);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* ── 数据口径 ───────────────────────────────────── */
.page-faq .faq-caliber {
  padding-top: 64px;
}

.page-faq .faq-caliber .st-lede {
  max-width: 60ch;
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-tabs {
  margin-top: 24px;
  border: 2px solid var(--faq-edge);
  background: var(--faq-panel);
}

.page-faq .faq-tabs .st-seg {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: 2px solid var(--faq-edge);
}

.page-faq .faq-tabs .st-seg__btn {
  flex: 1 1 auto;
  padding: 13px 14px;
  border: 0;
  border-right: 2px solid var(--faq-edge);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--mist);
  cursor: pointer;
  transition: background 140ms var(--ease), color 140ms var(--ease);
}

.page-faq .faq-tabs .st-seg__btn:last-child {
  border-right: 0;
}

.page-faq .faq-tabs .st-seg__btn:hover {
  color: var(--ice);
  background: rgba(43, 240, 200, 0.07);
}

.page-faq .faq-tabs .st-seg__btn[aria-selected="true"] {
  background: var(--cyan);
  color: var(--ink);
  font-weight: 600;
}

.page-faq .faq-tabs .st-seg__btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -4px;
}

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

.page-faq .faq-tabpanel p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
}

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

.page-faq .faq-tabpanel__list {
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-tabpanel__list li {
  padding: 10px 12px;
  border-left: 2px solid var(--violet);
  background: rgba(139, 107, 255, 0.08);
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .faq-tabpanel__list span {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--yellow);
}

/* ── 人工支持 ───────────────────────────────────── */
.page-faq .faq-support {
  padding-top: 64px;
  padding-bottom: 72px;
}

.page-faq .faq-support__panel {
  display: grid;
  gap: 28px;
  padding: 28px 20px;
  border: 2px solid var(--faq-edge);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(255, 122, 47, 0.16), transparent 60%),
    linear-gradient(160deg, var(--stand), var(--ink));
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-support__copy .st-h2 {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.6vw, 30px);
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-support__copy p {
  max-width: 56ch;
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

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

.page-faq .faq-support__meta {
  display: grid;
  gap: 10px;
  margin: 0;
}

.page-faq .faq-support__cell {
  padding: 12px 14px;
  border: 1px solid var(--faq-edge);
  background: rgba(5, 16, 14, 0.6);
}

.page-faq .faq-support__cell dt {
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .faq-support__cell dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
  overflow-wrap: anywhere;
}

/* ── 响应式 ─────────────────────────────────────── */
@media (min-width: 640px) {
  .page-faq .faq-quick__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-support__panel {
    padding: 32px 28px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-h) + 44px) 0 64px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 40px;
    align-items: center;
  }

  .page-faq .faq-body__grid {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: 40px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .page-faq .faq-steps-sec__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-support__panel {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
    padding: 40px 36px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 268px minmax(0, 1fr);
    gap: 48px;
  }

  .page-faq .faq-item__sum {
    font-size: 16px;
    padding: 16px 20px;
  }

  .page-faq .faq-item__body {
    padding: 14px 20px 18px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick__card,
  .page-faq .faq-hero__chips a,
  .page-faq .faq-item__sum::after {
    transition: none;
  }

  .page-faq .faq-quick__card:hover,
  .page-faq .faq-quick__card:focus-visible,
  .page-faq .faq-hero__chips a:hover,
  .page-faq .faq-hero__chips a:focus-visible {
    transform: none;
  }
}