.page-faq {
  background-color: var(--ink);
  background-image:
    radial-gradient(880px 520px at 10% -10%, rgba(47, 227, 214, 0.10), transparent 62%),
    radial-gradient(700px 460px at 98% 6%, rgba(255, 90, 31, 0.07), transparent 60%),
    linear-gradient(rgba(185, 198, 210, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(185, 198, 210, 0.045) 1px, transparent 1px);
  background-size: auto, auto, 24px 24px, 24px 24px;
  color: var(--warm);
  font-family: var(--font-body);
  padding-bottom: 104px;
}

.page-faq .canvas {
  padding: 0 20px;
  max-width: 1280px;
  margin: 0 auto;
}

.page-faq img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ---------- hero ---------- */
.page-faq .faq-hero {
  padding: 22px 0 4px;
  max-width: 940px;
}

.page-faq .faq-kicker {
  margin: 0 0 12px;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq h1 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 7.6vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--warm);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 48ch;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.85;
}

/* ---------- 高频三问 ---------- */
.page-faq .faq-quick {
  margin-top: 54px;
}

.page-faq .faq-quick__title {
  margin: 0 0 26px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 5vw, 32px);
  line-height: 1.3;
  color: var(--warm);
}

.page-faq .quick-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 30px;
}

.page-faq .quick-item {
  position: relative;
  padding-left: 20px;
}

.page-faq .quick-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  bottom: 4px;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(47, 227, 214, 0.08) 100%);
}

.page-faq .quick-item__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.4;
  color: var(--warm);
}

.page-faq .quick-item__lead {
  margin: 0 0 14px;
  color: var(--cyan-soft);
  font-size: 15px;
  line-height: 1.75;
}

/* ---------- 步骤列表 ---------- */
.page-faq .steps {
  list-style: none;
  counter-reset: faq-step;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-faq .steps > li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .steps > li::before {
  counter-increment: faq-step;
  content: counter(faq-step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--cyan);
  padding-top: 5px;
  padding-right: 8px;
  border-right: 1px solid var(--line);
}

/* ---------- 图片 ---------- */
.page-faq figure {
  margin: 0;
}

.page-faq .faq-figure {
  margin-top: 28px;
}

.page-faq .faq-figure img {
  width: 100%;
  border-radius: var(--r-md);
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .faq-figure--perm {
  max-width: 400px;
}

.page-faq .faq-figure--flow {
  max-width: 460px;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- 两栏主体 ---------- */
.page-faq .faq-body {
  margin-top: 66px;
  display: grid;
  gap: 34px;
}

.page-faq .faq-nav__title {
  margin: 0 0 14px;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-nav__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

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

.page-faq .faq-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 15px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  color: var(--mist);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-nav__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  color: var(--warm);
  border-color: var(--cyan);
  background-color: rgba(47, 227, 214, 0.08);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 92px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 60px;
}

.page-faq .faq-group__idx {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-group__idx::after {
  content: "";
  width: 32px;
  height: 2px;
  border-radius: 1px;
  background-color: var(--cyan);
  opacity: 0.75;
}

.page-faq .faq-group__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 4.6vw, 30px);
  line-height: 1.3;
  color: var(--warm);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-q {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-q:last-of-type {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-q__summary {
  position: relative;
  display: block;
  padding: 18px 42px 18px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--warm);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-q__summary:hover,
.page-faq .faq-q__summary:focus-visible {
  color: var(--cyan-soft);
}

.page-faq .faq-q__sign {
  position: absolute;
  right: 4px;
  top: 22px;
  width: 16px;
  height: 16px;
}

.page-faq .faq-q__sign::before,
.page-faq .faq-q__sign::after {
  content: "";
  position: absolute;
  background-color: var(--cyan);
  border-radius: 1px;
}

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

.page-faq .faq-q__sign::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
  transition: opacity 0.22s var(--ease);
}

.page-faq .faq-q[open] .faq-q__sign::after {
  opacity: 0;
}

.page-faq .faq-q__body {
  padding: 0 0 22px;
  display: grid;
  gap: 13px;
  animation: faq-reveal 0.22s var(--ease);
}

.page-faq .faq-q__body > p {
  margin: 0;
  max-width: 62ch;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-faq .faq-note {
  margin: 0;
  padding: 9px 0 9px 14px;
  border-left: 2px solid var(--amber);
  color: var(--mist);
  font-size: 14px;
  line-height: 1.75;
}

@keyframes faq-reveal {
  from { opacity: 0; }
  to { opacity: 1; }
}

.page-faq .link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 214, 0.35);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .link:hover,
.page-faq .link:focus-visible {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan-soft);
}

/* ---------- 数据行 ---------- */
.page-faq .data-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  padding: 16px 0;
  margin-bottom: 22px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .data-row__item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .data-row__num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-faq .data-row__key {
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-inline-cta {
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.75;
}

/* ---------- 客服区块 ---------- */
.page-faq .faq-support {
  margin-top: 78px;
  padding: 28px 22px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-soft);
  background-image: linear-gradient(150deg, rgba(47, 227, 214, 0.10) 0%, rgba(108, 91, 255, 0.06) 52%, rgba(255, 90, 31, 0.07) 100%);
  scroll-margin-top: 92px;
}

.page-faq .support-grid {
  display: grid;
  gap: 26px;
}

.page-faq .support-copy h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 4.6vw, 30px);
  line-height: 1.3;
  color: var(--warm);
}

.page-faq .support-copy p {
  margin: 0 0 14px;
  max-width: 54ch;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-faq .support-action {
  margin: 20px 0 0;
}

.page-faq .support-meta {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .support-meta__row {
  display: grid;
  gap: 5px;
}

.page-faq .support-meta__key {
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .support-meta__val {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--warm);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .canvas {
    padding: 0 32px;
  }

  .page-faq .faq-support {
    padding: 36px 34px;
  }

  .page-faq .faq-figure--flow {
    margin-left: 0;
  }
}

@media (min-width: 900px) {
  .page-faq {
    padding-bottom: 80px;
  }

  .page-faq .canvas {
    padding: 0 40px;
  }

  .page-faq .faq-hero {
    padding-top: 34px;
  }

  .page-faq .faq-quick {
    margin-top: 70px;
  }

  .page-faq .quick-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 34px;
  }

  .page-faq .faq-figure--perm {
    max-width: 460px;
  }

  .page-faq .faq-body {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    margin-top: 84px;
  }

  .page-faq .faq-nav {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-nav__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-nav__link {
    min-height: 0;
    border: 0;
    border-left: 2px solid var(--line-soft);
    border-radius: 0;
    padding: 11px 0 11px 14px;
    white-space: normal;
    background-color: transparent;
  }

  .page-faq .faq-nav__link:hover,
  .page-faq .faq-nav__link:focus-visible {
    background-color: transparent;
    border-left-color: var(--cyan);
  }

  .page-faq .faq-q__summary {
    font-size: 17.5px;
  }

  .page-faq .support-grid {
    grid-template-columns: 1.35fr 1fr;
    gap: 48px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}