.page-faq {
  --faq-acc: var(--blue);
  --faq-key: var(--green);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--header-h) + 40px) 0 52px;
  background:
    radial-gradient(115% 82% at 88% -8%, rgba(46, 125, 255, .30), transparent 60%),
    radial-gradient(90% 70% at 4% 6%, rgba(138, 107, 255, .14), transparent 62%),
    var(--ink);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -30% -20%;
  z-index: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(38, 51, 74, .6) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(0deg, rgba(38, 51, 74, .6) 0 1px, transparent 1px 48px);
  transform: rotate(6deg);
  -webkit-mask-image: radial-gradient(72% 62% at 62% 38%, #000 0%, transparent 76%);
  mask-image: radial-gradient(72% 62% at 62% 38%, #000 0%, transparent 76%);
  pointer-events: none;
}

.page-faq .faq-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-faq .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--text);
  border-bottom-color: var(--blue);
}

.page-faq .faq-hero .eyebrow {
  margin-top: 22px;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 18ch;
  font-size: clamp(2rem, 8.6vw, 4.4rem);
  font-weight: 900;
  line-height: 1.03;
  letter-spacing: -0.025em;
  color: var(--text);
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: .98rem;
  line-height: 1.85;
  color: var(--muted);
}

/* 搜索框（纯筛选样式，无脚本时仍为完整输入框） */
.page-faq .faq-search {
  margin-top: 28px;
  max-width: 640px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 8px 12px 8px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-faq .faq-search:focus-within {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(46, 125, 255, .22);
}

.page-faq .faq-search__label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-faq .faq-search__input {
  flex: 1 1 200px;
  min-width: 0;
  padding: 11px 0;
  border: 0;
  background: transparent;
  outline: none;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: .96rem;
}

.page-faq .faq-search__input::placeholder {
  color: var(--muted);
}

.page-faq .faq-search__count {
  flex: none;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--green);
  background: rgba(34, 227, 154, .10);
  border: 1px solid rgba(34, 227, 154, .30);
  border-radius: var(--r-pill);
  padding: 6px 14px;
}

.page-faq .faq-search__count .num {
  font-weight: 700;
}

/* 首屏指标 */
.page-faq .faq-hero__stats {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-faq .faq-hero__stats li {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 12px;
  border-top: 3px solid var(--line);
}

.page-faq .faq-hero__stats li:nth-child(1) { border-top-color: var(--blue); }
.page-faq .faq-hero__stats li:nth-child(2) { border-top-color: var(--green); }
.page-faq .faq-hero__stats li:nth-child(3) { border-top-color: var(--orange); }

.page-faq .faq-stat-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.6rem, 5.6vw, 2.2rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-stat-num.is-green { color: var(--green); }
.page-faq .faq-stat-num.is-orange { color: var(--orange); }

.page-faq .faq-stat-label {
  font-size: .82rem;
  color: var(--muted);
  letter-spacing: .02em;
}

/* ---------- 类别导航 ---------- */
.page-faq .faq-cats-section {
  position: relative;
}

.page-faq .faq-cats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-cat a {
  display: grid;
  align-content: start;
  gap: 6px;
  height: 100%;
  padding: 20px 22px 18px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--cat, var(--blue));
  border-radius: var(--r-md);
  background: var(--ink);
  color: var(--text);
  text-decoration: none;
  transition: transform .18s var(--ease), background .18s var(--ease), box-shadow .18s var(--ease);
}

.page-faq .faq-cat a:hover,
.page-faq .faq-cat a:focus-visible {
  transform: translateY(-3px);
  background: var(--surface);
  box-shadow: 0 0 0 1px var(--cat, var(--blue));
}

.page-faq .faq-cat--account { --cat: var(--blue); }
.page-faq .faq-cat--data { --cat: var(--green); }
.page-faq .faq-cat--export { --cat: var(--orange); }
.page-faq .faq-cat--device { --cat: var(--blue); }
.page-faq .faq-cat--youth { --cat: var(--violet); }
.page-faq .faq-cat--coop { --cat: var(--muted); }

.page-faq .faq-cat__idx {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--cat, var(--blue));
}

.page-faq .faq-cat__name {
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-cat__desc {
  font-size: .85rem;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .faq-cat__n {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--muted);
}

/* ---------- 主体：左栏 + 问答 ---------- */
.page-faq .faq-body {
  padding-block: 44px 64px;
}

.page-faq .faq-rail {
  margin-bottom: 30px;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--muted);
}

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

.page-faq .faq-rail__list a {
  flex: none;
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--ink-2);
  color: var(--muted);
  font-size: .86rem;
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--text);
  border-color: var(--blue);
  background: rgba(46, 125, 255, .12);
}

.page-faq .faq-rail__n {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .72rem;
  color: var(--muted);
}

/* 问答分组 */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 28px);
  margin-top: 44px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-group:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-group--account { --acc: var(--blue); }
.page-faq .faq-group--data { --acc: var(--green); }
.page-faq .faq-group--export { --acc: var(--orange); }
.page-faq .faq-group--device { --acc: var(--blue); }
.page-faq .faq-group--youth { --acc: var(--violet); }
.page-faq .faq-group--coop { --acc: var(--muted); }

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 8px;
}

.page-faq .faq-group__idx {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--acc, var(--blue));
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.24rem, 4.8vw, 1.7rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-faq .faq-group__lead {
  margin: 0 0 22px;
  max-width: 62ch;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--muted);
}

/* 折叠问答条目 */
.page-faq .qa {
  border: 1px solid var(--line);
  border-left: 3px solid transparent;
  border-radius: var(--r-md);
  background: var(--ink-2);
  transition: border-left-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .qa + .qa {
  margin-top: 10px;
}

.page-faq .qa[open] {
  border-left-color: var(--green);
  background: var(--surface);
}

.page-faq .qa__q {
  list-style: none;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 17px 20px;
  cursor: pointer;
  font-size: .98rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--text);
  transition: color .18s var(--ease);
}

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

.page-faq .qa__q::after {
  content: "";
  flex: none;
  margin-left: auto;
  margin-top: 6px;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .qa[open] .qa__q::after {
  transform: rotate(-135deg);
  border-color: var(--green);
}

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

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: -3px;
  border-radius: var(--r-md);
}

.page-faq .qa__a {
  padding: 0 20px 20px;
  max-width: 68ch;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--muted);
}

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

.page-faq .qa__a .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 1.1em;
  letter-spacing: .01em;
  color: var(--text);
}

.page-faq .qa__a .num.is-key {
  color: var(--green);
}

/* 插图 */
.page-faq .faq-figure {
  margin: 0 0 24px;
}

.page-faq .faq-figure .media-frame {
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-faq .faq-figure .media-caption {
  margin-top: 10px;
}

/* ---------- 底部斜向引导 ---------- */
.page-faq .faq-cta {
  position: relative;
  overflow: hidden;
  padding: 64px 0 76px;
  background: var(--ink-2);
}

.page-faq .faq-cta::before {
  content: "";
  position: absolute;
  left: -12%;
  right: -12%;
  top: 26%;
  height: 230px;
  background: linear-gradient(90deg, var(--blue), var(--violet) 55%, var(--green));
  transform: rotate(-6deg);
  opacity: .14;
  pointer-events: none;
}

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

.page-faq .faq-cta__band {
  max-width: 720px;
}

.page-faq .faq-cta__title {
  margin: 12px 0 0;
  font-size: clamp(1.4rem, 5vw, 2.1rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-cta__text {
  margin: 14px 0 0;
  max-width: 60ch;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--muted);
}

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

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact-section {
  padding-bottom: 80px;
}

.page-faq .faq-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-faq .faq-contact__card {
  padding: 24px 24px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--ink-2);
}

.page-faq .faq-contact__card--mail {
  border-top: 3px solid var(--blue);
}

.page-faq .faq-contact__card--tel {
  border-top: 3px solid var(--orange);
}

.page-faq .faq-contact__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--muted);
}

.page-faq .faq-contact__v {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 4.2vw, 1.4rem);
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--text);
  word-break: break-all;
}

.page-faq .faq-contact__note {
  margin: 12px 0 0;
  font-size: .87rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-contact__foot {
  margin: 26px 0 0;
  font-size: .88rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-contact__foot a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 125, 255, .4);
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .faq-contact__foot a:hover,
.page-faq .faq-contact__foot a:focus-visible {
  color: var(--text);
  border-bottom-color: var(--text);
}

/* ---------- 显现 ---------- */
.page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .18s var(--ease), transform .18s var(--ease);
}

.page-faq [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

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

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

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-h) + 60px) 0 68px;
  }

  .page-faq .faq-hero__lead {
    font-size: 1.04rem;
  }

  .page-faq .faq-group--split .faq-group__body {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 250px;
    gap: 38px;
    align-items: start;
  }

  .page-faq .faq-group--split .faq-figure {
    margin-bottom: 0;
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-body {
    padding-block: 56px 80px;
  }

  .page-faq .faq-body__grid {
    display: grid;
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 60px;
    align-items: start;
  }

  .page-faq .faq-rail {
    margin-bottom: 0;
  }

  .page-faq .faq-rail__inner {
    position: sticky;
    top: calc(var(--header-h) + 30px);
  }

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

  .page-faq .faq-rail__list a {
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 12px;
    white-space: normal;
    justify-content: space-between;
    padding: 11px 14px;
  }

  .page-faq .faq-rail__list a:hover,
  .page-faq .faq-rail__list a:focus-visible {
    border-left-color: var(--blue);
  }
}
<<<END>>>