.page-faq {
  --faq-side: 302px;
  --faq-gap: clamp(20px, 3vw, 34px);
  --faq-radius: 14px;
  position: relative;
  padding-top: clamp(16px, 3vw, 32px);
  padding-bottom: clamp(56px, 9vw, 116px);
  overflow-x: clip;
}

.page-faq .breadcrumbs {
  margin-bottom: clamp(14px, 2.4vw, 24px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: center;
  padding-bottom: clamp(30px, 5vw, 56px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -24%;
  right: -18%;
  width: min(540px, 88%);
  aspect-ratio: 1;
  background: radial-gradient(circle at 58% 42%, rgba(0, 245, 200, .17), transparent 62%);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero__copy,
.page-faq .faq-hero__media {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 7.2vw, 56px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  margin: 12px 0 16px;
  color: var(--text);
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(15.5px, 1.6vw, 17.5px);
  line-height: 1.85;
  color: rgba(233, 251, 243, .84);
}

.page-faq .faq-hero__media {
  width: 100%;
  border-radius: clamp(18px, 3vw, 26px);
}

/* ---------- 双栏主体 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

.page-faq .faq-rail {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.page-faq .faq-search {
  border: 1px solid var(--line-soft);
  border-radius: var(--faq-radius);
  background: linear-gradient(158deg, var(--panel-2), var(--panel));
  padding: 16px 16px 14px;
}

.page-faq .faq-search__label {
  display: block;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.page-faq .faq-search__field {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  transition: border-color .24s var(--ease), box-shadow .24s var(--ease);
}

.page-faq .faq-search__field:focus-within {
  border-color: var(--cyan);
  box-shadow: 0 1px 0 0 var(--cyan);
  color: var(--cyan);
}

.page-faq .faq-search__icon {
  flex: 0 0 auto;
}

.page-faq .faq-search input {
  flex: 1 1 auto;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: none;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 4px 0;
}

.page-faq .faq-search input::placeholder {
  color: rgba(127, 231, 196, .55);
}

.page-faq .faq-search input::-webkit-search-cancel-button {
  filter: invert(1) opacity(.5);
}

.page-faq .faq-search__hint {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-cats ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 3px;
}

.page-faq .faq-cats a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  transition: background .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
}

.page-faq .faq-cats a:hover {
  background: var(--panel-2);
}

.page-faq .faq-cats a[aria-current="true"] {
  background: var(--panel-2);
  border-left-color: var(--cyan);
  color: var(--cyan);
}

.page-faq .faq-cats__num {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-faq .faq-cats a[aria-current="true"] .faq-cats__num {
  color: var(--cyan);
}

.page-faq .faq-rail__cta {
  display: block;
  padding: 12px 14px;
  border: 1px dashed var(--line);
  border-radius: 12px;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

.page-faq .faq-rail__cta:hover {
  color: var(--amber);
  border-color: var(--amber);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-panel {
  display: grid;
  gap: clamp(30px, 5vw, 52px);
  min-width: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 4px;
  align-items: start;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-group__num {
  grid-row: 1 / span 2;
  margin-top: 5px;
  font-size: 12px;
  line-height: 1;
  padding: 4px 7px;
  border-radius: 6px;
  background: var(--cyan);
  color: var(--ink);
}

.page-faq .faq-group h2 {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(21px, 3.2vw, 28px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-group__desc {
  grid-column: 2;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-list {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.page-faq .faq-item {
  border: 1px solid var(--line-soft);
  border-radius: var(--faq-radius);
  background: var(--panel);
  transition: border-color .24s var(--ease), background .24s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--line);
}

.page-faq .faq-item[open] {
  border-color: rgba(0, 245, 200, .42);
  background: var(--panel-2);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__icon {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform .24s var(--ease), opacity .24s var(--ease);
}

.page-faq .faq-item__icon::before {
  left: 0;
  right: 0;
  top: 8px;
  height: 2px;
}

.page-faq .faq-item__icon::after {
  top: 0;
  bottom: 0;
  left: 8px;
  width: 2px;
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: scaleY(0);
  opacity: 0;
}

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

.page-faq .faq-item__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(233, 251, 243, .84);
}

/* ---------- 分步指引 ---------- */
.page-faq .faq-steps {
  margin-top: clamp(48px, 8vw, 96px);
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(22px, 4vw, 44px);
  border: 1px solid var(--line-soft);
  border-radius: clamp(18px, 3vw, 28px);
  background:
    linear-gradient(148deg, rgba(255, 180, 67, .10), transparent 46%),
    var(--panel);
}

.page-faq .faq-steps__intro h2 {
  margin: 10px 0 10px;
  font-family: var(--font-head);
  font-size: clamp(23px, 3.6vw, 34px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-faq .faq-steps__intro p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(233, 251, 243, .8);
}

.page-faq .faq-steps__media {
  width: 100%;
  border-radius: clamp(14px, 2.4vw, 22px);
}

.page-faq .faq-steps__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .faq-step {
  position: relative;
  padding: 16px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--faq-radius);
  background: var(--ink-deep);
}

.page-faq .faq-step__num {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--amber);
}

.page-faq .faq-step h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--text);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(233, 251, 243, .78);
}

/* ---------- 订阅与通知 ---------- */
.page-faq .faq-notify {
  margin-top: clamp(48px, 8vw, 96px);
  display: grid;
  gap: clamp(18px, 3vw, 28px);
}

.page-faq .faq-notify__head h2 {
  margin: 10px 0 10px;
  font-family: var(--font-head);
  font-size: clamp(23px, 3.6vw, 34px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-faq .faq-notify__head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(233, 251, 243, .8);
}

.page-faq .faq-notify__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .faq-notify__card {
  position: relative;
  overflow: hidden;
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 22px 18px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-card);
  background: var(--panel);
  transition: transform .24s var(--ease), border-color .24s var(--ease);
}

.page-faq .faq-notify__card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--accent, var(--cyan));
}

.page-faq .faq-notify__card:hover {
  transform: translateY(-2px);
  border-color: var(--line);
}

.page-faq .faq-notify__card--violet {
  --accent: var(--violet);
}

.page-faq .faq-notify__card--cyan {
  --accent: var(--cyan);
}

.page-faq .faq-notify__card--amber {
  --accent: var(--amber);
}

.page-faq .faq-notify__card h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}

.page-faq .faq-notify__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(233, 251, 243, .78);
}

.page-faq .faq-link {
  justify-self: start;
  margin-top: 4px;
  color: var(--cyan);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 245, 200, .4);
  padding-bottom: 2px;
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

.page-faq .faq-link::after {
  content: " →";
}

.page-faq .faq-link:hover {
  color: var(--amber);
  border-color: var(--amber);
}

/* ---------- 仍有疑问 ---------- */
.page-faq .faq-help {
  margin-top: clamp(48px, 8vw, 96px);
}

.page-faq .faq-help__panel {
  display: grid;
  gap: clamp(18px, 3vw, 26px);
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid var(--line-soft);
  border-radius: clamp(18px, 3vw, 28px);
  background:
    radial-gradient(130% 150% at 100% 0%, rgba(0, 245, 200, .13), transparent 56%),
    var(--panel-2);
}

.page-faq .faq-help__copy h2 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-faq .faq-help__copy p {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(233, 251, 243, .8);
}

.page-faq .faq-help__meta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding-top: clamp(14px, 2.4vw, 22px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-help__meta dt {
  margin-bottom: 5px;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-help__meta dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
}

.page-faq .faq-help__meta dd.mono {
  font-size: 14px;
  overflow-wrap: anywhere;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .faq-step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 26px;
    right: -18px;
    width: 18px;
    height: 1px;
    background: linear-gradient(90deg, var(--amber), rgba(255, 180, 67, .15));
  }

  .page-faq .faq-help__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 800px) {
  .page-faq .faq-notify__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
  }

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

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

  .page-faq .faq-steps {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    align-items: center;
  }

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

@media (min-width: 1120px) {
  .page-faq .faq-item summary {
    padding: 17px 20px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-notify__card,
  .page-faq .faq-cats a,
  .page-faq .faq-link,
  .page-faq .faq-search__field {
    transition: none;
  }

  .page-faq .faq-notify__card:hover {
    transform: none;
  }
}