.page-faq {
  --faq-radius: 4px;
  --faq-aside-w: 300px;
  --faq-text-soft: rgba(16, 24, 32, 0.78);
  --faq-text-invert: rgba(250, 247, 239, 0.84);
  font-family: var(--font-body);
  color: var(--black);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding: 34px 0 46px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(53, 224, 208, 0.09) 0,
    rgba(53, 224, 208, 0.09) 1px,
    transparent 1px,
    transparent 58px
  );
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -140px;
  right: -130px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 44, 0.34), transparent 66%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 16px;
}

.page-faq .faq-crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray);
}

.page-faq .faq-crumbs a {
  color: var(--aurora);
  text-decoration: none;
}

.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  text-decoration: underline;
}

.page-faq .faq-hero h1 {
  max-width: 18ch;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7.6vw, 62px);
  line-height: 1.02;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero__lead {
  max-width: 62ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--faq-text-invert);
}

.page-faq .faq-hero__meta {
  display: grid;
  gap: 14px;
  margin-top: 6px;
}

.page-faq .faq-version {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 12px 14px;
  background: var(--ink-2);
  border: 2px solid var(--line-strong);
  border-left: 6px solid var(--orange);
}

.page-faq .faq-version__label {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--gray);
}

.page-faq .faq-version__num {
  font-size: 19px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.04em;
}

.page-faq .faq-version__copy {
  padding: 7px 12px;
  font-size: 12.5px;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 30px;
}

.page-faq .faq-aside__inner {
  display: grid;
  gap: 18px;
}

.page-faq .faq-search {
  padding: 14px;
  background: #ffffff;
  border: 2px solid var(--black);
  border-radius: var(--faq-radius);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .faq-search__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.page-faq .faq-search__input {
  width: 100%;
  max-width: 100%;
  padding: 10px 12px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--black);
  background: var(--paper);
  border: 2px solid var(--black);
  border-radius: 2px;
}

.page-faq .faq-search__input::placeholder {
  color: rgba(16, 24, 32, 0.42);
}

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

.page-faq .faq-search__hint,
.page-faq .faq-search__empty {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(16, 24, 32, 0.62);
}

.page-faq .faq-search__empty {
  padding: 8px 10px;
  background: rgba(246, 184, 74, 0.28);
  border-left: 3px solid var(--amber);
  color: var(--black);
}

.page-faq .faq-nav {
  display: grid;
  border-top: 2px solid var(--black);
}

.page-faq .faq-nav__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 6px;
  font-size: 14.5px;
  color: var(--black);
  text-decoration: none;
  border-bottom: 1px solid var(--line-paper);
  transition: background-color 0.18s var(--ease), padding-left 0.18s var(--ease);
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  background: rgba(53, 224, 208, 0.16);
  padding-left: 12px;
}

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

.page-faq .faq-nav__num {
  flex: 0 0 auto;
  padding: 1px 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--black);
  background: var(--amber);
  border-radius: 2px;
}

.page-faq .faq-aside__card {
  padding: 16px;
  background: var(--ink);
  color: var(--paper);
  border: 2px solid var(--black);
  border-radius: var(--faq-radius);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .faq-aside__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.3;
}

.page-faq .faq-aside__text {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--faq-text-invert);
}

.page-faq .faq-aside__line {
  margin: 0 0 4px;
  font-size: 13px;
  color: var(--aurora);
  word-break: break-all;
}

.page-faq .faq-aside__link {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
  color: var(--amber);
  text-decoration: none;
  border-bottom: 2px solid var(--amber);
}

.page-faq .faq-aside__link:hover,
.page-faq .faq-aside__link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 问答正文 ---------- */
.page-faq .faq-content {
  display: grid;
  gap: 38px;
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 10px;
  margin-bottom: 4px;
  border-bottom: 2px solid var(--black);
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  padding: 2px 6px;
  font-size: 12px;
  color: var(--paper);
  background: var(--black);
  border-radius: 2px;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(21px, 4.4vw, 30px);
  line-height: 1.24;
}

.page-faq .faq-group__intro {
  max-width: 62ch;
  margin: 14px 0 18px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-text-soft);
}

.page-faq .qa {
  margin-bottom: 10px;
  background: #ffffff;
  border: 2px solid var(--black);
  border-radius: var(--faq-radius);
  overflow: hidden;
}

.page-faq .qa[open] {
  box-shadow: var(--shadow-hard-sm);
  border-left: 6px solid var(--orange);
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa summary:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: -3px;
}

.page-faq .qa__q {
  margin: 0;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
}

.page-faq .qa__sign {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border: 2px solid currentColor;
  border-radius: 2px;
}

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

.page-faq .qa__sign::before {
  width: 10px;
  height: 2px;
}

.page-faq .qa__sign::after {
  width: 2px;
  height: 10px;
  transition: opacity 0.18s var(--ease);
}

.page-faq .qa[open] .qa__sign::after {
  opacity: 0;
}

.page-faq .qa__body {
  padding: 0 16px 16px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-text-soft);
}

.page-faq .qa__body > * + * {
  margin-top: 12px;
}

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

.page-faq .qa__body a {
  color: var(--ink-2);
  text-decoration: underline;
  text-decoration-color: var(--orange);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-faq .qa__body a:hover,
.page-faq .qa__body a:focus-visible {
  color: var(--black);
  background: rgba(53, 224, 208, 0.24);
}

.page-faq .steps {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-step;
}

.page-faq .steps li {
  position: relative;
  counter-increment: faq-step;
  padding-left: 34px;
}

.page-faq .steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  top: 2px;
  left: 0;
  width: 24px;
  padding: 1px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-align: center;
  color: var(--black);
  background: var(--aurora);
  border-radius: 2px;
}

.page-faq .path-chip {
  display: inline-block;
  max-width: 100%;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--ink-2);
  background: rgba(7, 26, 47, 0.06);
  border: 1px solid var(--line-paper);
  border-radius: 2px;
  word-break: break-word;
}

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

.page-faq .channel-list li {
  padding-left: 12px;
  border-left: 3px solid var(--amber);
}

.page-faq .channel-list strong {
  display: inline-block;
  margin-right: 6px;
  color: var(--ink-2);
}

.page-faq .faq-figure {
  margin: 18px 0 20px;
}

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

/* ---------- 苹果端章节（深色块） ---------- */
.page-faq .faq-group--ink {
  padding: 22px 18px 24px;
  color: var(--paper);
  background: var(--ink-2);
  border: 2px solid var(--black);
  border-radius: var(--faq-radius);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-group--ink .faq-group__head {
  border-bottom-color: var(--line-strong);
}

.page-faq .faq-group--ink .faq-group__num {
  color: var(--ink);
  background: var(--aurora);
}

.page-faq .faq-group--ink .faq-group__intro {
  color: var(--faq-text-invert);
}

.page-faq .faq-group--ink .qa {
  background: var(--ink);
  border-color: var(--line-strong);
  color: var(--paper);
}

.page-faq .faq-group--ink .qa[open] {
  border-left-color: var(--aurora);
  box-shadow: var(--shadow-hard-dark);
}

.page-faq .faq-group--ink .qa__body {
  color: var(--faq-text-invert);
}

.page-faq .faq-group--ink .steps li::before {
  color: var(--ink);
  background: var(--amber);
}

.page-faq .faq-group--ink .path-chip {
  color: var(--amber);
  background: rgba(250, 247, 239, 0.08);
  border-color: var(--line-strong);
}

.page-faq .faq-group--ink .qa__body a {
  color: var(--aurora);
  text-decoration-color: var(--aurora);
}

.page-faq .faq-group--ink .media-frame__caption {
  color: var(--gray);
}

/* ---------- 联系前准备 ---------- */
.page-faq .faq-group--contact {
  padding-left: 16px;
  border-left: 8px solid var(--orange);
}

.page-faq .checklist {
  display: grid;
  gap: 10px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-faq .checklist li {
  position: relative;
  padding-left: 28px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--faq-text-soft);
}

.page-faq .checklist li::before {
  content: "";
  position: absolute;
  top: 5px;
  left: 0;
  width: 14px;
  height: 14px;
  border: 2px solid var(--black);
  border-radius: 2px;
  background: var(--amber);
}

.page-faq .faq-group__note {
  max-width: 60ch;
  margin: 0 0 18px;
  padding: 12px 14px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-2);
  background: rgba(53, 224, 208, 0.14);
  border-left: 4px solid var(--aurora);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 46px 0 60px;
  }

  .page-faq .faq-hero__lead {
    font-size: 16.5px;
  }

  .page-faq .faq-hero__meta {
    grid-template-columns: minmax(0, 1fr);
    align-items: center;
  }

  .page-faq .faq-search,
  .page-faq .faq-aside__card,
  .page-faq .faq-group--ink {
    padding: 18px 20px;
  }

  .page-faq .qa summary {
    padding: 16px 20px;
  }

  .page-faq .qa__body {
    padding: 0 20px 18px;
  }

  .page-faq .faq-group--contact {
    padding-left: 22px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 56px 0 72px;
  }

  .page-faq .faq-hero h1 {
    max-width: 22ch;
  }

  .page-faq .faq-hero__meta {
    grid-template-columns: minmax(0, 420px) auto;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    margin-top: 12px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-aside-w) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

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

  .page-faq .faq-content {
    gap: 46px;
  }

  .page-faq .faq-group--ink {
    padding: 28px 30px 30px;
  }

  .page-faq .faq-group--ink .faq-figure {
    max-width: 520px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-nav__link,
  .page-faq .qa__sign::after {
    transition: none;
  }
}
<<<END>>>