.page-faq {
  --faq-rule: 1px solid var(--line);
  --faq-pad: clamp(18px, 3vw, 32px);
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  background:
    radial-gradient(120% 80% at 88% 0%, rgba(207, 230, 225, .75) 0%, rgba(207, 230, 225, 0) 62%),
    var(--paper);
  border-bottom: var(--faq-rule);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 40px);
  padding: clamp(20px, 3.4vw, 34px) 0 clamp(32px, 5vw, 68px);
}

.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  list-style: none;
  margin: 0 0 clamp(16px, 2.6vw, 26px);
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
}

.page-faq .breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--gray);
}

.page-faq .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--mist);
}

.page-faq .breadcrumb__link {
  color: var(--gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-hero .breadcrumb__link:hover {
  color: var(--jade);
  border-bottom-color: var(--jade);
}

.page-faq .faq-hero .breadcrumb__link[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--cinnabar);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cinnabar);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 58px);
  line-height: 1.08;
  letter-spacing: -.015em;
  color: var(--ink);
  max-width: 18em;
}

.page-faq .faq-hero__desc {
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  max-width: 40em;
  font-family: var(--font-body);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
  color: var(--ink);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-faq .faq-hero__aside {
  align-self: start;
  padding: clamp(18px, 2.6vw, 26px);
  border: var(--faq-rule);
  background: var(--paper-white);
}

.page-faq .faq-hero__aside-title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.4;
  color: var(--ink);
}

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

.page-faq .faq-hero__aside-link {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 12px 6px;
  border-top: 1px dashed var(--mist);
  color: var(--ink);
  text-decoration: none;
  font-size: 14.5px;
  line-height: 1.6;
  transition: color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-hero__aside-link:hover,
.page-faq .faq-hero__aside-link:focus-visible {
  color: var(--jade);
  background: var(--jade-soft);
}

.page-faq .faq-hero__aside-num {
  color: var(--gold);
  font-size: 12px;
}

.page-faq .faq-hero__aside-note {
  margin: 14px 0 0;
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--gray);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 3vw, 40px);
  padding: clamp(32px, 5vw, 64px) 0 clamp(48px, 7vw, 96px);
}

.page-faq .faq-layout__main {
  min-width: 0;
  display: grid;
  gap: clamp(34px, 5vw, 62px);
}

/* ---------- 章节头 ---------- */
.page-faq .faq-section {
  min-width: 0;
  scroll-margin-top: 96px;
}

.page-faq .faq-section__head {
  display: flex;
  align-items: flex-start;
  gap: clamp(14px, 2.4vw, 24px);
  padding-bottom: clamp(14px, 2vw, 20px);
  border-bottom: 2px solid var(--ink);
}

.page-faq .section-marker {
  flex: 0 0 auto;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(34px, 5.4vw, 58px);
  line-height: .9;
  color: var(--gold);
  letter-spacing: -.03em;
}

.page-faq .faq-section__head-text {
  min-width: 0;
}

.page-faq .faq-section__eyebrow {
  margin: 0 0 6px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--gray);
}

.page-faq .faq-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.2vw, 30px);
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .faq-section__intro {
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  max-width: 46em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-section__intro a {
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid var(--jade-soft);
}

.page-faq .faq-section__intro a:hover {
  border-bottom-color: var(--cinnabar);
  color: var(--cinnabar);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
  margin-top: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-item {
  border: var(--faq-rule);
  background: var(--paper-white);
  position: relative;
  transition: border-color .2s var(--ease);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: transparent;
  transition: background-color .2s var(--ease);
}

.page-faq .faq-item:focus-within {
  border-color: var(--line-strong);
}

.page-faq .faq-item:focus-within::before {
  background: var(--cinnabar);
}

.page-faq .faq-item__head {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq-item__trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 16px clamp(14px, 2vw, 20px);
  border: 0;
  background: transparent;
  font-family: var(--font-display);
  font-size: clamp(15.5px, 1.8vw, 17px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  transition: color .2s var(--ease);
}

.page-faq .faq-item__trigger:hover {
  color: var(--jade);
}

.page-faq .faq-item__trigger:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: -2px;
}

.page-faq .faq-item__num {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cinnabar);
}

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

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

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 16px;
  height: 2px;
  background: var(--jade);
  transition: transform .22s var(--ease), background-color .22s var(--ease);
}

.page-faq .faq-item__icon::after {
  transform: rotate(90deg);
}

.page-faq .faq-item__trigger[aria-expanded="true"] .faq-item__icon::before {
  transform: rotate(180deg);
  background: var(--cinnabar);
}

.page-faq .faq-item__trigger[aria-expanded="true"] .faq-item__icon::after {
  transform: rotate(0deg);
  background: var(--cinnabar);
}

.page-faq .faq-item__lead {
  margin: 0;
  padding: 12px clamp(14px, 2vw, 20px) 14px;
  background: var(--jade-soft);
  border-left: 3px solid var(--cinnabar);
  border-top: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink);
}

.page-faq .faq-item__panel {
  padding: 4px clamp(14px, 2vw, 20px) 18px;
  border-top: 1px dashed var(--mist);
}

.page-faq .faq-item__panel p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink);
  max-width: 50em;
}

/* ---------- 简体切换 ---------- */
.page-faq .faq-section--switch {
  padding: clamp(20px, 3.2vw, 34px) clamp(16px, 2.6vw, 30px) clamp(24px, 3.6vw, 36px);
  background: var(--paper-white);
  border: 1px solid var(--line-strong);
  border-top: 4px solid var(--jade);
}

.page-faq .faq-section--switch .faq-section__head {
  border-bottom-color: var(--jade);
}

.page-faq .faq-figure {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
}

.page-faq .faq-figure .figure__frame {
  border: 1px solid var(--line);
  background: var(--jade-soft);
  overflow: hidden;
}

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

.page-faq .faq-figure .figure__caption {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--gray);
}

.page-faq .faq-steps {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  counter-reset: none;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2vw, 20px);
  align-items: start;
  padding: clamp(14px, 2vw, 20px);
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 3px solid var(--jade);
  transition: transform .22s var(--ease), border-color .22s var(--ease), background-color .22s var(--ease);
}

.page-faq .faq-step:hover {
  transform: translateY(-2px);
  background: var(--jade-soft);
  border-left-color: var(--cinnabar);
}

.page-faq .faq-step__num {
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1;
  color: var(--cinnabar);
  letter-spacing: -.02em;
}

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

.page-faq .faq-step__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.4;
  color: var(--ink);
}

.page-faq .faq-step__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink);
}

/* ---------- 桌面端帮助 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 30px);
  margin-top: clamp(16px, 2.4vw, 22px);
}

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

.page-faq .faq-split__text .faq-section__intro {
  margin-top: 0;
}

.page-faq .faq-bullets {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-bullets li {
  position: relative;
  padding: 10px 14px 10px 18px;
  background: var(--paper-white);
  border: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink);
}

.page-faq .faq-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 3px;
  background: var(--gold);
}

.page-faq .faq-bullets strong {
  color: var(--jade);
  font-weight: 700;
}

.page-faq .faq-split__text > p:last-child {
  margin: 16px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--gray);
}

.page-faq .faq-figure--side {
  margin: 0;
}

/* ---------- 检索与入口 ---------- */
.page-faq .faq-section--search {
  padding-top: clamp(6px, 1vw, 10px);
}

.page-faq .faq-legend-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: clamp(18px, 2.6vw, 24px);
}

.page-faq .faq-legend-card {
  padding: clamp(14px, 2vw, 20px);
  border: 1px dashed var(--line-strong);
  background: var(--paper-white);
}

.page-faq .faq-legend-card .legend {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--paper-white);
  background: var(--jade);
}

.page-faq .faq-legend-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink);
}

.page-faq .faq-search-note {
  margin: clamp(18px, 2.6vw, 24px) 0 0;
  padding: clamp(14px, 2vw, 20px);
  background: var(--ink);
  color: var(--paper-white);
  font-size: 14.5px;
  line-height: 1.82;
}

/* ---------- 浏览器兼容 ---------- */
.page-faq .faq-os-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: clamp(18px, 2.6vw, 24px);
}

.page-faq .faq-os {
  padding: clamp(16px, 2.2vw, 22px);
  background: var(--paper-white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold);
}

.page-faq .faq-os__label {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--gray);
}

.page-faq .faq-os__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.35;
  color: var(--jade);
}

.page-faq .faq-os p:last-child {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink);
}

/* ---------- 反馈前准备 ---------- */
.page-faq .faq-section--feedback {
  padding: clamp(20px, 3vw, 32px) clamp(16px, 2.6vw, 28px);
  background: var(--jade-soft);
  border-left: 4px solid var(--cinnabar);
}

.page-faq .faq-section--feedback .faq-section__head {
  border-bottom-color: var(--jade);
}

.page-faq .faq-prep {
  list-style: none;
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-faq .faq-prep__item {
  padding: clamp(14px, 2vw, 18px);
  background: var(--paper-white);
  border: 1px solid var(--line);
}

.page-faq .faq-prep__num {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cinnabar);
}

.page-faq .faq-prep__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.4;
  color: var(--ink);
}

.page-faq .faq-prep__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink);
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: clamp(18px, 2.6vw, 24px);
}

.page-faq .faq-contact__block {
  padding: clamp(14px, 2vw, 20px);
  background: var(--paper-white);
  border: 1px solid var(--line);
}

.page-faq .faq-contact__label {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--gray);
}

.page-faq .faq-contact__value {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(15px, 1.9vw, 17.5px);
  line-height: 1.45;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__hint {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--gray);
}

.page-faq .faq-contact__sla {
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line-strong);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-contact__sla a {
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid var(--jade-soft);
}

.page-faq .faq-contact__sla a:hover {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}

/* ---------- 侧边锚点 ---------- */
.page-faq .faq-toc {
  align-self: start;
  padding: 14px 0 0;
  border-top: 2px solid var(--ink);
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--gray);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--ink);
  text-decoration: none;
  background: var(--paper-white);
  border: 1px solid var(--line);
  transition: color .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-toc__link .mono {
  font-size: 10.5px;
  color: var(--gold);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--paper-white);
  background: var(--jade);
  border-color: var(--jade);
}

.page-faq .faq-toc__link:hover .mono,
.page-faq .faq-toc__link:focus-visible .mono {
  color: var(--jade-soft);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

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

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.72fr);
    align-items: start;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 210px;
    align-items: start;
  }

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

  .page-faq .faq-toc {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: 96px;
    padding-top: 14px;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    flex-wrap: nowrap;
  }

  .page-faq .faq-toc__link {
    width: 100%;
    background: transparent;
    border-color: transparent;
    border-bottom: 1px dashed var(--mist);
    padding: 8px 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step,
  .page-faq .faq-item,
  .page-faq .faq-toc__link,
  .page-faq .faq-hero__aside-link {
    transition: none;
  }

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