.page-faq {
  --faq-hair: var(--mist);
  --faq-tint: var(--ice-100);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

/* ---------- 导语区 ---------- */
.page-faq .faq-intro {
  padding-top: clamp(1rem, 3vw, 2rem);
  padding-bottom: clamp(1.75rem, 4vw, 2.75rem);
  border-bottom: var(--rule);
}

.page-faq .faq-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 1.25rem 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--ice-700);
}

.page-faq .faq-eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--volt-deep);
}

.page-faq h1 {
  margin: 0 0 1.1rem;
  max-width: 860px;
  font-size: clamp(1.85rem, 5vw, 3.35rem);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--ice-900);
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 38em;
  font-size: clamp(1rem, 1.6vw, 1.0625rem);
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 快答区 ---------- */
.page-faq .quick {
  padding: clamp(2rem, 5vw, 3.25rem) 0 clamp(2.5rem, 6vw, 4rem);
  background:
    linear-gradient(180deg, var(--paper) 0%, var(--paper) 62%, var(--ice-100) 62%, var(--ice-100) 100%);
}

.page-faq .quick .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
  padding-bottom: 0.85rem;
  border-bottom: var(--rule);
}

.page-faq .quick .section-head__title {
  margin: 0;
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ice-900);
}

.page-faq .quick .section-head__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--ice-700);
}

.page-faq .quick__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
  align-items: start;
}

.page-faq .quick-card {
  position: relative;
  padding: 1.35rem 1.25rem 1.4rem;
  background: var(--white);
  border: 1px solid var(--faq-hair);
  box-shadow: 7px 7px 0 0 var(--ice-100);
}

.page-faq .quick-card::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 28px;
  height: 28px;
  background: linear-gradient(225deg, var(--paper) 48%, var(--faq-hair) 49%, var(--paper) 52%);
  transform: rotate(0deg);
}

.page-faq .quick-card__no {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--ember);
}

.page-faq .quick-card h3 {
  margin: 0 0 0.65rem;
  font-size: 1.0625rem;
  font-weight: 800;
  line-height: 1.45;
  color: var(--ice-900);
}

.page-faq .quick-card p {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  line-height: 1.75;
}

.page-faq .quick-card__link {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--volt-deep);
  text-decoration: none;
  border-bottom: 2px solid var(--volt);
  padding-bottom: 1px;
}

.page-faq .quick-card__link:hover,
.page-faq .quick-card__link:focus-visible {
  color: var(--ice-900);
  border-bottom-color: var(--ice-900);
}

.page-faq .quick__figure {
  margin: 0.4rem 0 0;
  border: 1px solid var(--faq-hair);
  background: var(--white);
  padding: 6px;
  box-shadow: 7px 7px 0 0 rgba(7, 36, 61, 0.12);
}

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

.page-faq .quick__figure figcaption {
  margin-top: 0.55rem;
  padding: 0 0.25rem 0.25rem;
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--ice-700);
}

/* ---------- 主体两栏 ---------- */
.page-faq .qa-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: clamp(2rem, 5vw, 3.5rem) 0;
}

.page-faq .qa-index {
  border-top: 2px solid var(--ice-900);
  padding-top: 0.9rem;
}

.page-faq .qa-index__label {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--ice-700);
}

.page-faq .qa-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .qa-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--faq-hair);
  background: var(--white);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--ice-900);
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.page-faq .qa-index__num {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ice-500);
}

.page-faq .qa-index__link:hover,
.page-faq .qa-index__link:focus-visible {
  background: var(--faq-tint);
  border-color: var(--ice-500);
}

.page-faq .qa-body {
  min-width: 0;
}

/* ---------- 问答分组 ---------- */
.page-faq .qa-section {
  margin-bottom: clamp(2.25rem, 5vw, 3.5rem);
}

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

.page-faq .qa-section__head {
  position: relative;
  padding-left: 3.2rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--faq-hair);
  padding-bottom: 0.8rem;
}

.page-faq .qa-section__num {
  position: absolute;
  left: 0;
  top: -0.35rem;
  font-family: var(--font-mono);
  font-size: 2rem;
  line-height: 1;
  color: var(--faq-tint);
  letter-spacing: -0.04em;
}

.page-faq .qa-section h2 {
  margin: 0 0 0.25rem;
  font-size: clamp(1.2rem, 2.4vw, 1.5rem);
  font-weight: 800;
  color: var(--ice-900);
}

.page-faq .qa-section__note {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--ice-700);
}

/* ---------- 手风琴 ---------- */
.page-faq .qa-item {
  border-bottom: 1px solid var(--faq-hair);
  border-left: 3px solid transparent;
  padding: 0.85rem 0 0.85rem 0.9rem;
  transition: border-left-color 0.25s ease, background 0.25s ease, padding-left 0.25s ease;
}

.page-faq .qa-item[open] {
  border-left-color: var(--volt);
  background: linear-gradient(90deg, rgba(198, 255, 61, 0.16), rgba(198, 255, 61, 0) 62%);
  padding-left: 1.15rem;
}

.page-faq .qa-q {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ice-900);
}

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

.page-faq .qa-q:focus-visible {
  outline: 2px solid var(--ice-500);
  outline-offset: 3px;
}

.page-faq .qa-item[open] .qa-q {
  font-weight: 900;
}

.page-faq .qa-q__text {
  flex: 1 1 auto;
}

.page-faq .qa-mark {
  position: relative;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  margin-top: 0.3rem;
}

.page-faq .qa-mark::before,
.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  background: var(--ice-700);
  transition: transform 0.25s ease, background 0.25s ease;
}

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

.page-faq .qa-mark::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .qa-item[open] .qa-mark::before {
  background: var(--volt-deep);
}

.page-faq .qa-item[open] .qa-mark::after {
  transform: rotate(90deg);
  background: var(--volt-deep);
}

.page-faq .qa-a {
  margin-top: 0.75rem;
  padding-left: 1.55rem;
  max-width: 36em;
}

.page-faq .qa-a p {
  margin: 0 0 0.6rem;
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-faq .qa-a p:last-child {
  margin-bottom: 0;
}

.page-faq a {
  color: var(--ice-700);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq a:hover {
  color: var(--volt-deep);
}

/* ---------- 反馈章节配图 ---------- */
.page-faq .qa-figure {
  margin: 0 0 1.25rem;
  border: 1px solid var(--faq-hair);
  background: var(--white);
  padding: 6px;
  box-shadow: 7px 7px 0 0 rgba(7, 36, 61, 0.1);
}

.page-faq .qa-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-faq .qa-figure figcaption {
  margin-top: 0.55rem;
  padding: 0 0.25rem 0.25rem;
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--ice-700);
}

/* ---------- 术语词典 ---------- */
.page-faq .glossary {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0 2rem;
  margin: 0;
}

.page-faq .glossary dt {
  margin-top: 1.1rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px dashed var(--faq-hair);
  font-size: 0.9375rem;
  font-weight: 800;
  color: var(--ice-900);
}

.page-faq .glossary dd {
  margin: 0.4rem 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--ink);
}

.page-faq .glossary__more {
  margin: 1.5rem 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--ice-700);
}

/* ---------- 还没解决 ---------- */
.page-faq .faq-help {
  position: relative;
  margin-top: clamp(1rem, 3vw, 2rem);
  padding: clamp(2.5rem, 6vw, 4rem) 0 clamp(2.5rem, 6vw, 4rem);
  background: var(--ice-900);
  color: var(--paper);
}

.page-faq .faq-help::before {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  right: 0;
  height: 6px;
  background: var(--volt);
  transform: skewY(-1.2deg);
  transform-origin: left center;
}

.page-faq .faq-help__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(3rem, 9vw, 6rem);
  line-height: 0.9;
  color: rgba(198, 255, 61, 0.28);
  letter-spacing: -0.05em;
}

.page-faq .faq-help h2 {
  margin: 0.35rem 0 0.7rem;
  font-size: clamp(1.4rem, 3.4vw, 2.1rem);
  font-weight: 900;
  line-height: 1.25;
  color: var(--white);
}

.page-faq .faq-help__lede {
  margin: 0 0 clamp(1.5rem, 4vw, 2.25rem);
  max-width: 36em;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--ice-100);
}

.page-faq .help-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 0 0 clamp(1.5rem, 4vw, 2.5rem);
  padding: 0;
  list-style: none;
}

.page-faq .help-steps__item {
  display: flex;
  gap: 0.9rem;
  padding: 1.1rem 1rem;
  border: 1px solid rgba(221, 237, 247, 0.24);
  background: rgba(255, 255, 255, 0.04);
}

.page-faq .help-steps__n {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--volt);
}

.page-faq .help-steps h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 800;
  color: var(--white);
}

.page-faq .help-steps p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--ice-100);
  word-break: break-word;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-faq .faq-help .btn--ghost {
  border-color: rgba(221, 237, 247, 0.5);
  color: var(--paper);
}

.page-faq .faq-help .btn--ghost:hover,
.page-faq .faq-help .btn--ghost:focus-visible {
  border-color: var(--volt);
  color: var(--volt);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .glossary {
    grid-template-columns: 1fr 1fr;
  }

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

@media (min-width: 960px) {
  .page-faq .quick__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr)) 236px;
    gap: 1.25rem;
  }

  .page-faq .quick-card:nth-child(1) {
    margin-top: 0;
  }

  .page-faq .quick-card:nth-child(2) {
    margin-top: 20px;
  }

  .page-faq .quick-card:nth-child(3) {
    margin-top: 40px;
  }

  .page-faq .qa-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-faq .qa-index {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
    align-self: start;
    background: transparent;
    border-top: 2px solid var(--ice-900);
    padding-top: 1rem;
  }

  .page-faq .qa-index__list {
    display: block;
  }

  .page-faq .qa-index__item {
    border-bottom: 1px solid var(--faq-hair);
  }

  .page-faq .qa-index__link {
    display: flex;
    width: 100%;
    padding: 0.7rem 0.75rem;
    border: 0;
    border-left: 3px solid transparent;
    background: transparent;
    font-size: 0.875rem;
    transition: background 0.2s ease, border-left-color 0.2s ease, color 0.2s ease;
  }

  .page-faq .qa-index__num {
    display: inline-block;
    min-width: 1.6em;
  }

  .page-faq .qa-index__link:hover,
  .page-faq .qa-index__link:focus-visible {
    background: var(--faq-tint);
    border-left-color: var(--ice-500);
    border-color: transparent;
    border-left-color: var(--ice-500);
  }

  .page-faq .qa-section__num {
    font-size: 2.6rem;
    color: var(--faq-tint);
  }

  .page-faq .qa-a {
    padding-left: 1.55rem;
  }
}

@media (min-width: 1180px) {
  .page-faq .quick__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr)) 276px;
  }

  .page-faq .quick-card:nth-child(2) {
    margin-top: 26px;
  }

  .page-faq .quick-card:nth-child(3) {
    margin-top: 52px;
  }
}

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