.page-faq {
  --faq-accent: var(--mint);
  --faq-row: rgba(19, 41, 74, .42);
  position: relative;
  overflow-x: hidden;
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .breadcrumb {
  padding-top: clamp(14px, 2.4vw, 24px);
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
  border-radius: var(--radius);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 40px) 0 clamp(28px, 4.4vw, 48px);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(14, 34, 61, .85), rgba(7, 20, 38, 0) 78%),
    var(--ink-900);
}

.page-faq .faq-hero::before {
  content: "FAQ";
  position: absolute;
  right: -1.5%;
  top: -0.34em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(120px, 27vw, 300px);
  line-height: 1;
  letter-spacing: .02em;
  color: rgba(57, 242, 194, .055);
  pointer-events: none;
  user-select: none;
}

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

.page-faq .faq-hero__title {
  margin: clamp(12px, 2vw, 20px) 0 0;
  max-width: 20em;
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(30px, 5.6vw, 64px);
  line-height: 1.1;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-faq .faq-hero__title em {
  display: inline-block;
  font-style: normal;
  font-weight: 600;
  color: var(--mint);
  box-shadow: inset 0 -0.14em 0 rgba(57, 242, 194, .22);
}

.page-faq .faq-hero__lede {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 54em;
  color: rgba(243, 247, 252, .78);
  font-size: var(--fs-16);
  line-height: 1.8;
}

/* 快捷色签 */
.page-faq .quick-jump {
  list-style: none;
  margin: clamp(20px, 3vw, 34px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .quick-jump__item {
  flex: 1 1 210px;
  min-width: 0;
}

.page-faq .quick-jump__link {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--mint);
  background: var(--surface-2);
  color: var(--paper);
  text-decoration: none;
  font-size: var(--fs-14);
  transition: background .16s var(--ease), transform .16s var(--ease), box-shadow .16s var(--ease);
}

.page-faq .quick-jump__item:nth-child(2) .quick-jump__link {
  border-top-color: var(--orange);
}

.page-faq .quick-jump__item:nth-child(3) .quick-jump__link {
  border-top-color: var(--violet);
}

.page-faq .quick-jump__link:hover,
.page-faq .quick-jump__link:focus-visible {
  background: var(--ink-700);
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}

.page-faq .quick-jump__num {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-18);
  letter-spacing: .06em;
  color: var(--steel);
}

.page-faq .quick-jump__label {
  font-family: var(--font-head);
  font-weight: 500;
  letter-spacing: .01em;
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 56px);
  padding-top: clamp(26px, 4vw, 48px);
}

.page-faq .faq-index {
  border-left: 2px solid var(--line-strong);
  padding-left: 14px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: var(--fs-12);
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 6px;
  color: rgba(243, 247, 252, .8);
  text-decoration: none;
  font-size: var(--fs-14);
  border-bottom: 1px solid var(--line-soft);
  transition: color .14s var(--ease), background .14s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--mint);
  background: var(--wash);
}

.page-faq .faq-index__num {
  font-family: var(--font-display);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--steel);
}

.page-faq .faq-index__note {
  margin: 16px 0 0;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--steel);
}

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

/* ---------- 问答分组 ---------- */
.page-faq .faq-body {
  min-width: 0;
  display: grid;
  gap: clamp(28px, 4.6vw, 56px);
}

.page-faq .faq-group {
  scroll-margin-top: 24px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  column-gap: 12px;
  row-gap: 6px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-strong);
  margin-bottom: 4px;
}

.page-faq .faq-group__num {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1;
  color: var(--mint);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.3;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-faq .faq-group__note {
  grid-column: 1 / -1;
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: rgba(141, 162, 190, .95);
}

/* 折叠问答 */
.page-faq .qa {
  border-bottom: 1px solid var(--line-soft);
  background: var(--faq-row);
  transition: background .16s var(--ease);
}

.page-faq .qa:hover {
  background: rgba(19, 41, 74, .66);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 16px 14px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__num {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--fs-16);
  letter-spacing: .06em;
  color: var(--steel);
  padding-top: 2px;
  transition: color .14s var(--ease);
}

.page-faq .qa__text {
  font-family: var(--font-head);
  font-weight: 500;
  font-size: var(--fs-16);
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .qa__sign {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 5px;
  flex: none;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--steel);
  transform: translate(-50%, -50%);
  transition: transform .18s var(--ease), background .18s var(--ease);
}

.page-faq .qa__sign::before {
  width: 14px;
  height: 1px;
}

.page-faq .qa__sign::after {
  width: 1px;
  height: 14px;
}

.page-faq .qa[open] {
  background: var(--surface-2);
}

.page-faq .qa[open] .qa__num {
  color: var(--mint);
}

.page-faq .qa[open] .qa__sign::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .qa[open] .qa__sign::before {
  background: var(--mint);
}

.page-faq .qa__a {
  padding: 0 14px 18px calc(14px + 1.6em + 12px);
}

.page-faq .qa__a p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: rgba(243, 247, 252, .76);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: clamp(18px, 3vw, 28px) 0 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
  padding: 10px;
}

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

.page-faq .media__caption {
  margin: 10px 2px 0;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 反馈与联系 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 32px);
  margin-top: 14px;
  padding: clamp(18px, 3vw, 30px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  background: linear-gradient(140deg, var(--ink-800), rgba(7, 20, 38, .9));
}

.page-faq .faq-contact__lede {
  margin: 0 0 16px;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: rgba(243, 247, 252, .86);
}

.page-faq .contact-list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-faq .contact-list__row {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 10px 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .contact-list dt {
  font-family: var(--font-display);
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--steel);
}

.page-faq .contact-list dd {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-faq .contact-list dd a {
  color: var(--mint);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .contact-list dd a:hover {
  color: var(--amber);
}

.page-faq .faq-contact__hint {
  margin: 16px 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(141, 162, 190, 1);
}

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

.page-faq .faq-contact__media {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-900);
  padding: 8px;
}

.page-faq .faq-related {
  margin: 18px 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--steel);
}

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

.page-faq .faq-related a:hover {
  color: var(--mint);
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(190px, 234px) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: clamp(18px, 3vw, 32px);
    padding-left: 18px;
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
    align-items: center;
  }

  .page-faq .qa__q {
    padding: 18px 18px;
  }

  .page-faq .qa__a {
    padding: 0 18px 20px calc(18px + 1.6em + 12px);
  }

  .page-faq .qa__text {
    font-size: var(--fs-18);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .quick-jump__link,
  .page-faq .qa,
  .page-faq .qa__num,
  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after {
    transition: none;
  }

  .page-faq .quick-jump__link:hover {
    transform: none;
  }
}
<<<END>>>