.page-faq {
  --faq-radius: 2px;
  background: var(--carbon);
  color: var(--on-dark);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  background: var(--grad-carbon);
  padding: clamp(18px, 3.4vw, 32px) 0 clamp(36px, 5vw, 68px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(120% 90% at 75% 0%, #000 10%, transparent 78%);
  mask-image: radial-gradient(120% 90% at 75% 0%, #000 10%, transparent 78%);
  opacity: .85;
  pointer-events: none;
}

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

.page-faq .faq-hero .breadcrumb,
.page-faq .faq-hero .breadcrumb a {
  color: var(--on-dark-soft);
}

.page-faq .faq-hero .breadcrumb a:hover {
  color: var(--ice-b);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 3.6vw, 44px);
  margin-top: clamp(18px, 3vw, 34px);
}

.page-faq .faq-hero__text {
  order: 1;
  min-width: 0;
}

.page-faq .faq-hero__media {
  order: 2;
  position: relative;
  margin: 0;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line-strong);
  border-radius: var(--faq-radius);
  background: var(--panel);
}

.page-faq .faq-hero__media::before,
.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  z-index: 2;
  pointer-events: none;
}

.page-faq .faq-hero__media::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--orange);
  border-left: 2px solid var(--orange);
}

.page-faq .faq-hero__media::after {
  right: -1px;
  bottom: -1px;
  border-right: 2px solid var(--orange);
  border-bottom: 2px solid var(--orange);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .faq-hero .eyebrow {
  color: var(--blue-soft);
  letter-spacing: .22em;
}

.page-faq .faq-hero h1.display {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(30px, 6vw, 58px);
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--on-dark);
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
  color: var(--on-dark-soft);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(16px, 3.4vw, 40px);
  margin: 24px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__stat-v {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.8vw, 30px);
  color: var(--neon);
  letter-spacing: -.02em;
}

.page-faq .faq-hero__stat-k {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--on-dark-soft);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 26px;
}

/* ---------- 工作区 ---------- */
.page-faq .faq-workspace {
  background: linear-gradient(180deg, var(--mist) 0%, var(--ice-a) 100%);
  color: var(--ink);
  padding: clamp(40px, 6vw, 80px) 0 clamp(44px, 6vw, 88px);
}

.page-faq .faq-workspace__head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-faq .faq-workspace__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.12;
  color: var(--ink);
}

.page-faq .faq-workspace__head p {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* 筛选条 */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 0 0 16px;
  margin-bottom: clamp(20px, 3vw, 30px);
  border-bottom: 1px solid var(--line-ink);
}

.page-faq .faq-filter .filter-btn {
  padding: 8px 14px;
  font-family: var(--font-body);
  font-size: 13.5px;
  line-height: 1.2;
  color: var(--ink-soft);
  background: rgba(255, 255, 255, .78);
  border: 1px solid var(--line-ink);
  border-radius: var(--faq-radius);
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-filter .filter-btn:hover {
  color: var(--blue);
  border-color: var(--blue);
}

.page-faq .faq-filter .filter-btn[aria-pressed="true"] {
  color: #fff;
  background: var(--blue);
  border-color: var(--blue);
}

.page-faq .faq-filter .filter-btn:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-faq .faq-filter .filter-bar__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--ink-soft);
}

/* 布局 */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

/* 左侧索引 */
.page-faq .faq-index {
  position: relative;
  padding: 16px 14px 14px;
  background: var(--carbon);
  border: 1px solid var(--line-strong);
  border-radius: var(--faq-radius);
  color: var(--on-dark);
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--blue-soft);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--on-dark-soft);
  border-bottom: 2px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: #fff;
  border-bottom-color: var(--orange);
  background: rgba(28, 105, 212, .16);
  outline: none;
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--blue-soft);
}

.page-faq .faq-index__label {
  font-size: 13.5px;
}

.page-faq .faq-index__n {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--silver);
  opacity: .7;
}

.page-faq .faq-index__anno {
  display: none;
}

/* 问题分组 */
.page-faq .faq-groups {
  min-width: 0;
}

.page-faq .faq-group {
  margin-bottom: clamp(28px, 4vw, 48px);
  scroll-margin-top: 92px;
}

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

.page-faq .faq-group__head {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-ink);
}

.page-faq .faq-group__head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 64px;
  height: 2px;
  background: var(--grad-speed);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--blue);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(19px, 2.6vw, 27px);
  line-height: 1.2;
  color: var(--ink);
}

.page-faq .faq-group__meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .05em;
  color: var(--ink-soft);
}

/* 手风琴 */
.page-faq .faq-item {
  border: 1px solid var(--line-ink);
  border-top: none;
  background: rgba(255, 255, 255, .74);
  transition: background .24s var(--ease), border-color .24s var(--ease), box-shadow .24s var(--ease);
}

.page-faq .faq-group__head + .faq-item {
  margin-top: 14px;
  border-top: 1px solid var(--line-ink);
}

.page-faq .faq-item[open] {
  background: #fff;
  border-color: rgba(28, 105, 212, .45);
  box-shadow: 0 0 0 1px rgba(28, 105, 212, .16);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 15px 16px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--blue);
  transition: transform .24s var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(45deg);
  color: var(--orange);
}

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

.page-faq .faq-item__a {
  padding: 0 16px 16px;
  margin-left: 16px;
  border-left: 2px solid var(--ice-b);
  font-size: 14.8px;
  line-height: 1.8;
  color: var(--ink-soft);
}

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

/* 组内图片 */
.page-faq .faq-figure {
  margin: 16px 0 0;
  border: 1px solid var(--line-ink);
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: var(--mist);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-figure .media-frame__caption {
  padding: 9px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--ink-soft);
  background: rgba(255, 255, 255, .86);
  border-top: 1px solid var(--line-ink);
}

/* ---------- 底部求助 ---------- */
.page-faq .faq-help {
  background: var(--carbon);
  padding: clamp(40px, 6vw, 76px) 0;
}

.page-faq .faq-help__box {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  padding: clamp(20px, 3.4vw, 36px);
  border-radius: var(--faq-radius);
}

.page-faq .faq-help .eyebrow {
  color: var(--blue-soft);
  letter-spacing: .22em;
}

.page-faq .faq-help h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.15;
  color: var(--on-dark);
}

.page-faq .faq-help__text p {
  margin: 12px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--on-dark-soft);
}

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

.page-faq .faq-help__links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 14px;
  font-size: 14.5px;
  line-height: 1.4;
  text-decoration: none;
  color: var(--on-dark);
  border: 1px solid var(--line);
  border-left: 2px solid var(--blue);
  border-radius: var(--faq-radius);
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-help__links a:hover,
.page-faq .faq-help__links a:focus-visible {
  color: #fff;
  background: rgba(28, 105, 212, .18);
  border-color: var(--blue);
  border-left-color: var(--orange);
  outline: none;
}

/* ---------- 断点 ---------- */
@media (min-width: 780px) {
  .page-faq .faq-hero__media {
    aspect-ratio: 3 / 4;
  }

  .page-faq .faq-help__box {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(230px, .78fr) minmax(0, 1.5fr);
    align-items: end;
    gap: clamp(28px, 4.4vw, 60px);
  }

  .page-faq .faq-hero__media {
    order: 1;
  }

  .page-faq .faq-hero__text {
    order: 2;
    padding-bottom: 6px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
    gap: clamp(24px, 3.4vw, 44px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 84px;
    padding-right: 32px;
  }

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

  .page-faq .faq-index__link {
    border-bottom: none;
    border-left: 2px solid transparent;
    padding: 10px 8px 10px 10px;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--orange);
    border-bottom-color: transparent;
  }

  .page-faq .faq-index__label {
    font-size: 14px;
  }

  .page-faq .faq-index__n {
    margin-left: auto;
  }

  .page-faq .faq-index__anno {
    display: block;
    position: absolute;
    top: 16px;
    right: 6px;
    margin: 0;
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: .34em;
    color: var(--silver);
    opacity: .55;
    pointer-events: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__q::after,
  .page-faq .faq-index__link,
  .page-faq .faq-help__links a {
    transition: none;
  }
}
<<<END>>>