.page-faq {
  background: var(--ink-900);
  color: var(--ice);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(28px, 5vw, 56px) 0 clamp(36px, 5vw, 60px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 88% 4%, rgba(40, 224, 208, 0.14), transparent 52%),
    radial-gradient(circle at 6% 96%, rgba(255, 107, 44, 0.1), transparent 46%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 32px;
  margin-top: 28px;
}

.page-faq .faq-hero__main h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 6.4vw, 60px);
  line-height: 1.12;
  letter-spacing: -0.012em;
  margin: 14px 0 20px;
  max-width: 15ch;
  color: var(--ice);
}

.page-faq .faq-hero__main .lede {
  max-width: 56ch;
  color: var(--mist);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  margin: 0;
}

/* ---------- 快速查找 ---------- */
.page-faq .faq-search {
  position: relative;
  padding: 22px;
  background: var(--ink-800);
}

.page-faq .faq-search__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-faq .faq-search__field {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  transition: border-color var(--t-fast);
}

.page-faq .faq-search__field:focus-within {
  border-bottom-color: var(--gold);
}

.page-faq .faq-search__icon {
  flex: none;
  width: 18px;
  height: 18px;
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--ice);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  padding: 6px 0;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

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

.page-faq .faq-search__hint {
  margin: 16px 0 10px;
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-quick {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-quick li {
  margin: 0;
}

.page-faq .faq-quick a {
  display: inline-block;
  padding: 6px 12px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--ice);
  text-decoration: none;
  border: 1px solid var(--line);
  background: rgba(7, 20, 38, 0.55);
  transition: border-color var(--t-fast), color var(--t-fast);
}

.page-faq .faq-quick a:hover,
.page-faq .faq-quick a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 分类编号带 ---------- */
.page-faq .faq-cats {
  list-style: none;
  margin: 44px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-cats li {
  margin: 0;
  display: flex;
}

.page-faq .faq-cats a {
  display: block;
  width: 100%;
  padding: 18px 16px 20px;
  background: var(--ink-800);
  color: var(--ice);
  text-decoration: none;
  transition: background var(--t-fast);
}

.page-faq .faq-cats a:hover,
.page-faq .faq-cats a:focus-visible {
  background: var(--ink-700);
}

.page-faq .faq-cats__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
  margin-bottom: 10px;
}

.page-faq .faq-cats__txt {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
  margin-bottom: 5px;
}

.page-faq .faq-cats__desc {
  display: block;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  padding-top: clamp(40px, 5vw, 72px);
  padding-bottom: clamp(56px, 7vw, 96px);
}

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

.page-faq .faq-side__inner {
  position: sticky;
  top: 92px;
  padding-left: 18px;
  border-left: 1px solid var(--line);
}

.page-faq .faq-side__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-faq .faq-side__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-side__list li {
  margin: 0;
}

.page-faq .faq-side__list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-side__list a:hover,
.page-faq .faq-side__list a:focus-visible {
  color: var(--ice);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-side__list .mono {
  color: var(--orange);
  font-size: 12px;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-bottom: clamp(44px, 5vw, 64px);
  margin-bottom: clamp(44px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group:last-of-type {
  border-bottom: 0;
  margin-bottom: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 14px;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(23px, 3.4vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-faq .faq-group__intro {
  margin: 0 0 26px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 尺寸刻度图 ---------- */
.page-faq .faq-scale {
  margin: 4px 0 24px;
  padding: 18px 16px 12px;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-faq .faq-scale__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-scale figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  margin-bottom: 12px;
  transition: border-color var(--t-fast), background var(--t-fast);
}

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

.page-faq .faq-item[open] {
  border-color: var(--cyan);
  background: var(--ink-700);
}

.page-faq .faq-item:target {
  border-color: var(--orange);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.6;
  color: var(--ice);
  transition: color var(--t-fast);
}

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

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__marker {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 4px;
}

.page-faq .faq-item__marker::before,
.page-faq .faq-item__marker::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform var(--t-fast), background var(--t-fast);
}

.page-faq .faq-item__marker::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 2px;
}

.page-faq .faq-item__marker::after {
  left: 8px;
  top: 0;
  width: 2px;
  height: 18px;
}

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

.page-faq .faq-item[open] .faq-item__marker::before {
  background: var(--orange);
}

.page-faq .faq-item__body {
  padding: 0 20px 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-item__body p {
  margin: 0 0 10px;
  max-width: 66ch;
}

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

.page-faq .faq-next {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 13.5px;
  color: var(--mist);
}

.page-faq .faq-next a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(40, 224, 208, 0.45);
  transition: color var(--t-fast), border-color var(--t-fast);
}

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

/* ---------- 客服联系卡 ---------- */
.page-faq .faq-contact {
  margin-top: 24px;
  padding: 24px 20px;
  background: var(--ink-800);
}

.page-faq .faq-contact__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--ice);
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 14px;
  margin: 0 0 18px;
  padding: 0;
}

.page-faq .faq-contact__list > div {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-contact__list > div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-contact__list dt {
  flex: none;
  min-width: 72px;
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-faq .faq-contact__list dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--ice);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__note {
  margin: 0 0 20px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 结尾 ---------- */
.page-faq .faq-outro {
  margin-top: 8px;
  padding: 28px 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  background: linear-gradient(120deg, rgba(242, 184, 75, 0.09), rgba(12, 32, 56, 0.9) 62%);
}

.page-faq .faq-outro__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.4vw, 23px);
  line-height: 1.35;
  color: var(--ice);
}

.page-faq .faq-outro__text {
  margin: 0 0 20px;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-item__body {
    padding: 0 22px 24px 54px;
  }

  .page-faq .faq-contact {
    padding: 28px 26px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 48px;
    align-items: end;
  }

  .page-faq .faq-cats {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    margin-top: 52px;
  }

  .page-faq .faq-body {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-side {
    display: block;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-body {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__marker::before,
  .page-faq .faq-item__marker::after,
  .page-faq .faq-item,
  .page-faq .faq-cats a,
  .page-faq .faq-quick a,
  .page-faq .faq-side__list a,
  .page-faq .faq-search__field {
    transition: none;
  }
}
<<<END>>>