.page-faq {
  background: var(--c-sand);
  color: var(--c-ink);
  --faq-line: rgba(108, 132, 148, 0.28);
  --faq-panel: var(--c-paper);
}

.page-faq .faq-shell {
  padding-block: clamp(18px, 2.6vw, 30px) clamp(56px, 7vw, 96px);
}

.page-faq .faq-breadcrumb {
  margin-bottom: clamp(16px, 2.2vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.2vw, 44px);
  align-items: start;
  padding-bottom: clamp(28px, 3.6vw, 48px);
  border-bottom: 1px solid var(--faq-line);
}

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

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-lake);
  margin: 0 0 12px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5.4vw, 3.35rem);
  line-height: 1.08;
  letter-spacing: 0.005em;
  color: var(--c-highland);
  margin: 0 0 clamp(14px, 1.8vw, 20px);
  max-width: 18em;
}

.page-faq .faq-hero__lede {
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.78;
  color: var(--c-ink);
  margin: 0;
  max-width: 34em;
}

.page-faq .faq-hero__aside {
  min-width: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: var(--c-rock);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.78) contrast(1.02);
}

.page-faq .faq-quick h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.1rem, 1.7vw, 1.3rem);
  color: var(--c-highland);
  margin: 4px 0 10px;
}

/* ---------- 三步阶梯 ---------- */
.page-faq .faq-start {
  padding-block: clamp(28px, 3.6vw, 48px);
}

.page-faq .step-panel {
  background: var(--c-highland);
  color: var(--c-paper);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3vw, 40px);
  position: relative;
  overflow: hidden;
}

.page-faq .step-panel::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -80px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 211, 192, 0.22), rgba(11, 43, 60, 0) 70%);
  pointer-events: none;
}

.page-faq .step-panel__eyebrow {
  color: var(--c-electric);
}

.page-faq .step-panel h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 2.8vw, 2.1rem);
  line-height: 1.16;
  margin: 0 0 clamp(20px, 2.6vw, 30px);
  color: var(--c-paper);
}

.page-faq .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: clamp(18px, 2.4vw, 28px);
}

.page-faq .step-rail-wrap {
  position: absolute;
  left: 19px;
  top: 40px;
  bottom: 92px;
  width: 2px;
  pointer-events: none;
}

.page-faq .step-rail {
  display: block;
  width: 2px;
  height: 100%;
}

.page-faq .step-item {
  position: relative;
  padding-left: 56px;
  min-width: 0;
}

.page-faq .step-num {
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--c-rock);
  color: var(--c-electric);
  font-size: 14px;
  letter-spacing: 0.04em;
  border: 2px solid var(--c-electric);
}

.page-faq .step-item h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  margin: 6px 0 6px;
  color: var(--c-paper);
  letter-spacing: 0.01em;
}

.page-faq .step-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(252, 251, 247, 0.76);
  max-width: 34em;
}

.page-faq .step-panel__foot {
  margin: clamp(22px, 2.6vw, 30px) 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(252, 251, 247, 0.16);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(252, 251, 247, 0.68);
  max-width: 44em;
}

/* ---------- 主体：目录 + 问答 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3vw, 40px);
  align-items: start;
}

.page-faq .faq-toc {
  background: var(--c-rock);
  color: var(--c-paper);
  border-radius: var(--radius-lg);
  padding: 18px 18px 20px;
}

.page-faq .faq-toc__title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-electric);
  margin: 0 0 12px;
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq .faq-toc__link {
  display: block;
  padding: 8px 10px 8px 12px;
  border-left: 2px solid rgba(47, 211, 192, 0.3);
  color: rgba(252, 251, 247, 0.86);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  background: rgba(47, 211, 192, 0.12);
  border-left-color: var(--c-electric);
  color: var(--c-paper);
  outline: none;
}

.page-faq .faq-toc__hint {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(252, 251, 247, 0.58);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  gap: clamp(34px, 4.4vw, 56px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 96px;
  min-width: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-line);
  margin-bottom: 14px;
}

.page-faq .faq-group__num {
  font-size: 13px;
  color: var(--c-lake);
  letter-spacing: 0.06em;
}

.page-faq .faq-group h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--c-highland);
  margin: 0;
}

.page-faq .faq-group__intro {
  margin: 0 0 18px;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(22, 28, 32, 0.72);
  max-width: 40em;
}

.page-faq .faq-group__more {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(22, 28, 32, 0.7);
}

.page-faq .faq-group__more a,
.page-faq .faq-group .qa a,
.page-faq .help-panel__body a {
  color: var(--c-lake);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-group__more a:hover,
.page-faq .faq-group .qa a:hover,
.page-faq .help-panel__body a:hover {
  color: var(--c-highland);
}

.page-faq .faq-group__more a:focus-visible,
.page-faq .faq-group .qa a:focus-visible,
.page-faq .help-panel__body a:focus-visible {
  outline: 2px solid var(--c-electric);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-faq .qa {
  background: var(--faq-panel);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-faq .qa summary {
  cursor: pointer;
  list-style: none;
  padding: 13px 42px 13px 16px;
  position: relative;
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-highland);
}

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

.page-faq .qa summary::after {
  content: "+";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--c-lake);
}

.page-faq .qa[open] summary::after {
  content: "−";
}

.page-faq .qa summary:hover {
  background: rgba(18, 133, 127, 0.06);
}

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--c-electric);
  outline-offset: -2px;
}

.page-faq .qa p {
  margin: 0;
  padding: 0 16px 15px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(22, 28, 32, 0.78);
  max-width: 38em;
}

.page-faq .qa--compact summary {
  font-size: 14px;
  padding: 11px 38px 11px 14px;
}

.page-faq .qa--compact p {
  padding: 0 14px 13px;
  font-size: 13.5px;
}

.page-faq .faq-quick {
  padding-top: 4px;
}

/* ---------- 对照表 ---------- */
.page-faq .faq-table-wrap {
  margin: 0 0 20px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
  background: var(--faq-panel);
  overflow-x: auto;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 460px;
  border-collapse: collapse;
  font-size: 13.5px;
  line-height: 1.6;
}

.page-faq .faq-table caption {
  caption-side: top;
  text-align: left;
  padding: 12px 16px 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-mist);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 11px 16px;
  text-align: left;
  border-bottom: 1px solid var(--faq-line);
  vertical-align: top;
}

.page-faq .faq-table thead th {
  background: var(--c-rock);
  color: var(--c-paper);
  font-weight: 600;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  border-bottom: none;
}

.page-faq .faq-table tbody th {
  font-weight: 600;
  color: var(--c-highland);
  white-space: nowrap;
}

.page-faq .faq-table tbody td {
  color: rgba(22, 28, 32, 0.76);
}

.page-faq .faq-table tbody tr:last-child th,
.page-faq .faq-table tbody tr:last-child td {
  border-bottom: none;
}

.page-faq .faq-table .mono {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--c-lake);
  letter-spacing: 0.02em;
}

/* ---------- 订阅图文 ---------- */
.page-faq .faq-subscribe {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.page-faq .faq-subscribe__figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: var(--c-rock);
}

.page-faq .faq-subscribe__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.82);
}

.page-faq .faq-subscribe__caption {
  padding: 10px 14px 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(252, 251, 247, 0.7);
  background: var(--c-rock);
}

/* ---------- 联系区块 ---------- */
.page-faq .help-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  background: var(--c-paper);
  border: 1px solid var(--faq-line);
  border-left: 4px solid var(--c-lake);
  border-radius: var(--radius-md);
  padding: clamp(18px, 2.4vw, 26px);
}

.page-faq .help-panel__body p {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(22, 28, 32, 0.8);
  max-width: 38em;
}

.page-faq .help-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(22, 28, 32, 0.76);
}

.page-faq .help-list li::marker {
  color: var(--c-lake);
}

.page-faq .help-panel__contact {
  border-top: 1px solid var(--faq-line);
  padding-top: 14px;
}

.page-faq .help-panel__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-mist);
}

.page-faq .help-panel__line {
  margin: 0 0 6px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--c-highland);
  word-break: break-word;
}

.page-faq .help-panel__mail {
  color: var(--c-lake);
  text-decoration: none;
  border-bottom: 1px solid rgba(18, 133, 127, 0.4);
}

.page-faq .help-panel__mail:hover {
  color: var(--c-highland);
  border-bottom-color: var(--c-highland);
}

.page-faq .help-panel__mail:focus-visible {
  outline: 2px solid var(--c-electric);
  outline-offset: 2px;
  border-radius: 2px;
}

.page-faq .help-panel__note {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--c-mist);
  max-width: 30em;
}

/* ---------- 媒体查询：平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-faq .faq-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .page-faq .faq-subscribe {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.62fr);
    gap: 22px;
  }

  .page-faq .help-panel {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.8fr);
    gap: 26px;
  }

  .page-faq .help-panel__contact {
    border-top: none;
    border-left: 1px solid var(--faq-line);
    padding-top: 0;
    padding-left: 22px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr) 232px;
    gap: clamp(28px, 3.4vw, 48px);
  }

  .page-faq .faq-toc {
    order: 2;
    position: sticky;
    top: 24px;
    align-self: start;
  }

  .page-faq .step-list {
    gap: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc__link,
  .page-faq .qa summary {
    transition: none;
  }
}
<<<END>>>