.page-faq {
  --faq-soft: #3E3450;
  --faq-on-dark: #D6CAE8;
  --faq-gap: clamp(20px, 3vw, 32px);
  background: var(--porcelain);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--fs-17);
  line-height: 1.75;
  padding: 0 0 clamp(56px, 8vw, 96px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(24px, 4vw, 48px) var(--edge) clamp(28px, 4vw, 44px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  border-bottom: 2px solid var(--ink);
}

.page-faq .breadcrumb {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  margin: 0 0 clamp(14px, 2vw, 22px);
}

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

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--mauve);
}

.page-faq .breadcrumb a {
  color: var(--violet);
  text-decoration: none;
  border-bottom: 1px dashed var(--gold);
}

.page-faq .eyebrow {
  margin: 0 0 12px;
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--vine);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.1rem, 4.8vw, 3.5rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  max-width: 15ch;
  text-wrap: balance;
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 46ch;
  color: var(--faq-soft);
}

.page-faq .faq-hero-fig {
  margin: 0;
}

.page-faq .faq-hero-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
  background: var(--violet-mist);
  object-fit: cover;
}

.page-faq .faq-hero-fig figcaption {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--violet);
}

/* ---------- 主体栅格 ---------- */
.page-faq .faq-body {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(30px, 5vw, 56px) var(--edge) 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-main {
  min-width: 0;
}

/* ---------- 目录 ---------- */
.page-faq .faq-toc {
  order: -1;
  border: 2px solid var(--ink);
  background: var(--violet-mist);
  box-shadow: var(--shadow-soft);
  padding: 14px;
  min-width: 0;
}

.page-faq .toc-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--violet);
}

.page-faq .toc-list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .toc-item {
  flex: 0 0 auto;
  margin: 0;
}

.page-faq .toc-list a {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 14px;
  border: 2px solid var(--ink);
  background: var(--porcelain);
  color: var(--ink);
  font-size: var(--fs-13);
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .toc-idx {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  background: var(--violet-deep);
  color: var(--gold);
  padding: 2px 6px;
}

.page-faq .toc-foot {
  display: none;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  border: 2px solid var(--ink);
  background: var(--porcelain);
  box-shadow: var(--shadow-hard);
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  scroll-margin-top: calc(var(--header-h, 64px) + 24px);
}

.page-faq .faq-item[open] {
  box-shadow: inset 6px 0 0 var(--vine), var(--shadow-hard);
}

.page-faq .faq-q {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px clamp(16px, 2.4vw, 22px);
  min-height: 44px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

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

.page-faq .faq-q::marker {
  content: "";
}

.page-faq .faq-idx {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  background: var(--violet-deep);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: var(--fs-17);
  letter-spacing: 0.06em;
}

.page-faq .faq-head {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-label {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--vine);
}

.page-faq .faq-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-22);
  line-height: 1.3;
  color: var(--ink);
}

.page-faq .faq-mark {
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  position: relative;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: var(--violet);
}

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

.page-faq .faq-mark::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 2px;
  transition: transform 0.22s var(--ease);
}

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

.page-faq .faq-a {
  background: var(--violet-mist);
  border-top: 2px solid var(--ink);
  padding: 20px clamp(16px, 2.6vw, 28px) 24px;
}

.page-faq .faq-item[open] .faq-a {
  animation: faq-drop 0.22s var(--ease) both;
}

@keyframes faq-drop {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  margin: 0;
}

.page-faq .qa dt {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--mauve);
  font-size: var(--fs-17);
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}

.page-faq .qa dt:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-faq .qa dd {
  margin: 6px 0 0;
  max-width: 62ch;
  color: var(--faq-soft);
  font-size: var(--fs-17);
  line-height: 1.75;
}

.page-faq .qa a {
  color: var(--violet);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-style: dashed;
  text-decoration-color: var(--gold);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.page-faq .qa a:hover {
  color: var(--vine);
  text-decoration-color: var(--vine);
}

/* ---------- 图与示意图 ---------- */
.page-faq .faq-fig,
.page-faq .faq-diagram {
  margin: 24px 0 0;
}

.page-faq .faq-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-soft);
  object-fit: cover;
}

.page-faq .faq-diagram {
  background: var(--porcelain);
  border: 2px solid var(--ink);
  padding: 16px;
}

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

.page-faq .faq-diagram text {
  font-family: var(--font-sans);
}

.page-faq .faq-diagram figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--violet);
}

/* ---------- 组内跳转 ---------- */
.page-faq .faq-jump {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  margin-top: 24px;
  padding: 10px 16px;
  border: 2px solid var(--ink);
  background: var(--porcelain);
  color: var(--ink);
  font-size: var(--fs-13);
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--shadow-soft);
  transition: background 0.2s var(--ease), color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .faq-jump:hover {
  background: var(--vine);
  color: var(--porcelain);
  box-shadow: var(--shadow-hard);
}

/* ---------- 联系渠道 ---------- */
.page-faq .faq-contact {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(36px, 6vw, 64px) var(--edge) 0;
}

.page-faq .contact-panel {
  background: var(--violet-deep);
  color: var(--porcelain);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
  padding: clamp(24px, 4vw, 40px);
  scroll-margin-top: calc(var(--header-h, 64px) + 16px);
}

.page-faq .contact-panel .eyebrow {
  color: var(--gold);
  margin-bottom: 10px;
}

.page-faq .contact-panel h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.2vw, 2.25rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  color: var(--porcelain);
}

.page-faq .contact-lede {
  margin: 0;
  max-width: 52ch;
  color: var(--faq-on-dark);
  font-size: var(--fs-17);
}

.page-faq .contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.page-faq .contact-card {
  border: 2px solid var(--mauve);
  background: rgba(247, 244, 238, 0.07);
  padding: 16px;
  min-width: 0;
}

.page-faq .contact-card .mono {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .contact-card strong {
  display: block;
  font-size: var(--fs-17);
  line-height: 1.5;
  color: var(--porcelain);
  overflow-wrap: anywhere;
}

.page-faq .contact-card p {
  margin: 6px 0 0;
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--faq-on-dark);
}

.page-faq .contact-note {
  margin: 22px 0 0;
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--faq-on-dark);
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-faq .contact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 940px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 8fr) minmax(0, 3fr);
    gap: clamp(24px, 3vw, 48px);
  }

  .page-faq .faq-main {
    grid-column: 1;
    grid-row: 1;
  }

  .page-faq .faq-toc {
    order: 0;
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: calc(var(--header-h, 64px) + 24px);
  }

  .page-faq .toc-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .toc-item {
    margin-bottom: 8px;
  }

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

  .page-faq .toc-list a {
    white-space: normal;
    align-items: flex-start;
  }

  .page-faq .toc-list a:hover {
    border-color: var(--violet);
    background: var(--porcelain);
  }

  .page-faq .toc-foot {
    display: block;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 2px solid var(--ink);
  }

  .page-faq .toc-foot p {
    margin: 0 0 10px;
    font-size: var(--fs-13);
    color: var(--faq-soft);
  }

  .page-faq .faq-body:has(#group-01[open]) .toc-list a[href="#group-01"],
  .page-faq .faq-body:has(#group-02[open]) .toc-list a[href="#group-02"],
  .page-faq .faq-body:has(#group-03[open]) .toc-list a[href="#group-03"],
  .page-faq .faq-body:has(#group-04[open]) .toc-list a[href="#group-04"],
  .page-faq .faq-body:has(#group-05[open]) .toc-list a[href="#group-05"],
  .page-faq .faq-body:has(#group-06[open]) .toc-list a[href="#group-06"] {
    background: var(--vine);
    color: var(--porcelain);
    border-color: var(--ink);
  }

  .page-faq .faq-body:has(#group-01[open]) .toc-list a[href="#group-01"] .toc-idx,
  .page-faq .faq-body:has(#group-02[open]) .toc-list a[href="#group-02"] .toc-idx,
  .page-faq .faq-body:has(#group-03[open]) .toc-list a[href="#group-03"] .toc-idx,
  .page-faq .faq-body:has(#group-04[open]) .toc-list a[href="#group-04"] .toc-idx,
  .page-faq .faq-body:has(#group-05[open]) .toc-list a[href="#group-05"] .toc-idx,
  .page-faq .faq-body:has(#group-06[open]) .toc-list a[href="#group-06"] .toc-idx {
    background: var(--porcelain);
    color: var(--violet-deep);
  }
}

@media (max-width: 480px) {
  .page-faq .faq-idx {
    width: 40px;
    height: 40px;
    font-size: var(--fs-13);
  }

  .page-faq .faq-name {
    font-size: var(--fs-17);
  }

  .page-faq .qa dd,
  .page-faq .faq-lede {
    font-size: var(--fs-13);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-a {
    animation: none;
  }

  .page-faq .faq-mark::after,
  .page-faq .toc-list a,
  .page-faq .faq-jump {
    transition: none;
  }
}
<<<END>>>