.page-faq {
  --faq-side: 272px;
  --faq-gap: clamp(24px, 4vw, 56px);
  --faq-anchor-offset: calc(var(--header-h) + 24px);
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 128px 128px, 128px 128px;
  background-position: center top;
}

.page-faq .support-hero {
  padding: clamp(28px, 5vw, 64px) 0 clamp(20px, 3vw, 40px);
}

.page-faq .support-hero__grid {
  align-items: end;
  gap: clamp(24px, 4vw, 48px);
}

.page-faq .support-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.45rem, 7.4vw, 4.75rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.01em;
  color: var(--paper);
  text-transform: none;
}

.page-faq .support-hero__title em {
  font-style: normal;
  color: var(--signal);
  display: inline-block;
}

.page-faq .support-hero__lede {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 56ch;
  font-size: clamp(0.9375rem, 1.4vw, 1.0625rem);
  line-height: 1.85;
  color: var(--sage);
}

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

.page-faq .support-hero__meta {
  list-style: none;
  margin: clamp(24px, 3.6vw, 36px) 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 34px;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--sage);
}

.page-faq .support-hero__meta .data-num {
  color: var(--cyan);
  font-size: 0.9375rem;
  margin-right: 6px;
}

.page-faq .support-hero__figure {
  margin: 0;
}

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

/* ---------- 高频问题 ---------- */
.page-faq .quick {
  padding: clamp(20px, 3.2vw, 40px) 0 clamp(28px, 4vw, 52px);
}

.page-faq .quick__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--line-strong);
}

.page-faq .quick__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  font-weight: 600;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .quick__note {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--sage);
}

.page-faq .quick__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 1px;
  background: var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .quick-card {
  padding: 22px 20px 24px;
  background: var(--ink-deep);
  border-left: 2px solid transparent;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.page-faq .quick-card:hover {
  background: var(--ink-struct);
  border-left-color: var(--signal);
}

.page-faq .quick-card__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: var(--signal);
}

.page-faq .quick-card__q {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .quick-card__a {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--sage);
}

.page-faq .quick-card__a a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

/* ---------- 索引 + 问答 ---------- */
.page-faq .support-layout {
  padding: clamp(20px, 3vw, 40px) 0 clamp(36px, 5vw, 72px);
}

.page-faq .support-layout__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .support-index {
  border-top: 2px solid var(--signal);
  padding-top: 14px;
}

.page-faq .support-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sage);
}

.page-faq .support-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  padding-bottom: 4px;
}

.page-faq .support-index__item {
  flex: 0 0 auto;
}

.page-faq .support-index__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.8125rem;
  line-height: 1.5;
  white-space: nowrap;
  color: var(--sage);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .support-index__link:hover,
.page-faq .support-index__link:focus-visible {
  color: var(--paper);
  border-color: var(--signal);
  background: rgba(255, 107, 26, 0.08);
}

.page-faq .support-index__num {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  color: var(--signal);
}

.page-faq .support-index__note {
  display: none;
  margin-top: 22px;
  font-size: 0.8125rem;
  line-height: 1.75;
}

/* ---------- 问答分组 ---------- */
.page-faq .qa-group {
  scroll-margin-top: var(--faq-anchor-offset);
  margin-bottom: clamp(32px, 5vw, 60px);
}

.page-faq .qa-group:last-child {
  margin-bottom: 0;
}

.page-faq .qa-group__head {
  padding-bottom: 14px;
  border-bottom: 2px solid var(--line-strong);
}

.page-faq .qa-group__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.3125rem, 2.8vw, 1.875rem);
  font-weight: 600;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .qa-group__desc {
  margin: 8px 0 0;
  max-width: 60ch;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--sage);
}

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

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 4px 18px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--paper);
  transition: color 0.2s ease;
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q:hover {
  color: var(--cyan);
}

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

.page-faq .qa__icon {
  position: relative;
  flex: 0 0 20px;
  width: 20px;
  height: 20px;
  margin: 4px 0 0 auto;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transition: border-color 0.2s ease;
}

.page-faq .qa[open] .qa__icon {
  border-color: var(--signal);
}

.page-faq .qa__icon::before,
.page-faq .qa__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--signal);
  transform: translate(-50%, -50%);
}

.page-faq .qa__icon::before {
  width: 9px;
  height: 1.5px;
}

.page-faq .qa__icon::after {
  width: 1.5px;
  height: 9px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.page-faq .qa[open] .qa__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 20px 22px 0;
  max-width: 68ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--sage);
}

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

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

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

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

.page-faq .steps li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 11px 14px;
  border-left: 2px solid var(--cyan);
  background: linear-gradient(90deg, rgba(127, 231, 212, 0.12), rgba(127, 231, 212, 0) 72%);
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--paper);
}

.page-faq .steps .data-num {
  color: var(--cyan);
  font-size: 0.75rem;
  line-height: 1.9;
}

/* ---------- 底部支持 ---------- */
.page-faq .support-help {
  margin-top: clamp(16px, 2.4vw, 28px);
  padding: clamp(30px, 5vw, 64px) 0;
  background: var(--ink-struct);
  border-top: 2px solid var(--signal);
  border-bottom: 1px solid var(--line);
}

.page-faq .support-help__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-faq .support-help__title {
  margin: 12px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(1.375rem, 3vw, 2rem);
  font-weight: 600;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .support-help__text {
  margin: 12px 0 0;
  max-width: 52ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--sage);
}

.page-faq .support-help__contact {
  margin-top: 22px;
  padding-top: 6px;
  border-top: 1px solid var(--line);
}

.page-faq .support-help__contact .contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 0.875rem;
  line-height: 1.7;
}

.page-faq .support-help__contact .contact-row__label {
  flex: 0 0 72px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--sage);
  padding-top: 3px;
}

.page-faq .support-help__contact .contact-row__value {
  flex: 1 1 200px;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .support-help__note {
  margin: 16px 0 0;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--sage);
}

.page-faq .support-help__note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .support-help__btn {
  margin-top: 22px;
}

.page-faq .support-help__figure {
  margin: 0;
}

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

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

@media (min-width: 900px) {
  .page-faq .support-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    border-top-width: 2px;
  }

  .page-faq .support-index__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

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

  .page-faq .support-index__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: 12px 8px 12px 14px;
    white-space: normal;
    font-size: 0.875rem;
  }

  .page-faq .support-index__link:hover,
  .page-faq .support-index__link:focus-visible {
    background: rgba(255, 107, 26, 0.07);
    border-left-color: var(--signal);
  }

  .page-faq .support-index__note {
    display: block;
  }

  .page-faq .support-layout__inner {
    grid-template-columns: var(--faq-side) minmax(0, 1fr);
  }

  .page-faq .support-help__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-faq .qa__q {
    font-size: 1.0625rem;
    padding: 20px 4px 20px 0;
  }
}

@media (min-width: 1180px) {
  .page-faq .quick__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .quick-card:nth-child(4),
  .page-faq .quick-card:nth-child(5) {
    grid-column: span 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .quick-card,
  .page-faq .support-index__link,
  .page-faq .qa__q,
  .page-faq .qa__icon,
  .page-faq .qa__icon::after {
    transition: none;
  }
}
<<<END>>>