.page-faq {
  --faq-rule: 2px solid var(--graphite);
  --faq-soft-shadow: 4px 4px 0 var(--hair);
  padding-bottom: clamp(3rem, 7vw, 6rem);
}

/* 面包屑 */
.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-block: clamp(1rem, 3vw, 1.75rem);
  font-size: 0.8125rem;
  color: var(--moss);
}

.page-faq .crumbs__sep {
  color: var(--hair);
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.5rem);
  padding-bottom: clamp(1.75rem, 4vw, 2.75rem);
  border-bottom: var(--faq-rule);
}

.page-faq .faq-hero__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--deep-blue);
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 20ch;
  font-size: clamp(2rem, 6.2vw, 3.8rem);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--graphite);
}

.page-faq .faq-hero__accent {
  box-shadow: inset 0 -0.26em 0 var(--teal);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 44rem;
  font-size: clamp(0.98rem, 1.5vw, 1.1rem);
  line-height: 1.8;
  color: var(--graphite);
}

.page-faq .faq-hero__strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
  margin: 0;
}

.page-faq .faq-stat {
  padding: 0.7rem 0.8rem;
  background: var(--paper);
  border: var(--faq-rule);
  box-shadow: var(--faq-soft-shadow);
}

.page-faq .faq-stat dt {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--moss);
}

.page-faq .faq-stat dd {
  margin: 0.25rem 0 0;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--ink);
  word-break: break-word;
}

.page-faq .faq-stat dd small {
  margin-left: 0.18rem;
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--moss);
}

.page-faq .faq-hero__figure {
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: var(--faq-rule);
  background: var(--ice);
}

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

/* 分类导航 */
.page-faq .faq-index {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.65rem;
  margin-block: clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .faq-index__card {
  display: grid;
  gap: 0.3rem;
  padding: 0.85rem 0.95rem;
  background: var(--paper);
  border: var(--faq-rule);
  color: var(--graphite);
  text-decoration: none;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-index__card:hover,
.page-faq .faq-index__card:focus-visible {
  background: var(--ice);
  box-shadow: 5px 5px 0 var(--graphite);
  transform: translate(-2px, -2px);
}

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

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-faq .faq-index__name {
  font-size: 1rem;
  font-weight: 700;
}

.page-faq .faq-index__desc {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--moss);
}

/* 移动端目录 */
.page-faq .faq-toc-mobile {
  margin-bottom: 1.25rem;
  padding: 0.7rem 0.9rem;
  background: var(--ice-soft);
  border: var(--faq-rule);
}

.page-faq .faq-toc-mobile summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--ink);
  list-style: none;
}

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

.page-faq .faq-toc-mobile summary::after {
  content: "＋";
  float: right;
  color: var(--deep-blue);
}

.page-faq .faq-toc-mobile[open] summary::after {
  content: "－";
}

/* 主栅格 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: start;
}

/* 侧栏目录 */
.page-faq .faq-toc {
  display: none;
  position: sticky;
  top: 2rem;
  padding-top: 0.9rem;
  border-top: var(--faq-rule);
}

.page-faq .faq-toc__label {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--moss);
}

.page-faq .faq-toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.05rem;
}

.page-faq .faq-toc__list a {
  display: flex;
  gap: 0.5rem;
  padding: 0.45rem 0.15rem;
  font-size: 0.84rem;
  color: var(--graphite);
  text-decoration: none;
  border-bottom: 1px solid var(--hair);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  color: var(--deep-blue);
  padding-left: 0.4rem;
}

.page-faq .faq-toc__idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--amber);
  padding-top: 0.15rem;
}

/* 问题分组 */
.page-faq .faq-group {
  scroll-margin-top: 5rem;
  padding-block: clamp(1.5rem, 4vw, 2.5rem);
  border-top: var(--faq-rule);
}

.page-faq .faq-group:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.7rem;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--amber);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.35rem, 2.6vw, 1.8rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--graphite);
}

.page-faq .faq-tag {
  padding: 0.18rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--ink);
  background: var(--ice);
  border: 1px solid var(--graphite);
}

.page-faq .faq-tag--teal {
  background: var(--teal);
}

.page-faq .faq-tag--amber {
  background: var(--amber);
}

.page-faq .faq-group__lead {
  margin: 0.6rem 0 1.1rem;
  padding-left: 0.85rem;
  max-width: 42rem;
  font-size: 0.98rem;
  line-height: 1.78;
  color: var(--moss);
  border-left: 3px solid var(--teal);
}

/* 步骤路径 */
.page-faq .faq-path {
  margin: 0 0 1.3rem;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.55rem;
}

.page-faq .faq-path__step {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 0.75rem 0.85rem;
  background: var(--ice);
  border: var(--faq-rule);
}

.page-faq .faq-path__step--start {
  background: var(--frost);
  border-color: var(--amber);
  box-shadow: 4px 4px 0 var(--amber);
}

.page-faq .faq-path__num {
  flex: none;
  display: grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--graphite);
}

.page-faq .faq-path__body {
  display: block;
  min-width: 0;
}

.page-faq .faq-path__label {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-path__note {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.76rem;
  line-height: 1.55;
  color: var(--moss);
}

/* 图文块 */
.page-faq .faq-figure {
  margin: 0 0 1.3rem;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: var(--faq-rule);
  background: var(--ice);
}

.page-faq .faq-figure--slim {
  aspect-ratio: 3 / 2;
}

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

/* 折叠问答 */
.page-faq .faq-list {
  display: grid;
  gap: 0.55rem;
}

.page-faq .faq-item {
  background: var(--paper);
  border: var(--faq-rule);
  transition: box-shadow var(--dur) var(--ease);
}

.page-faq .faq-item[data-open] {
  box-shadow: 5px 5px 0 var(--hair);
}

.page-faq .faq-item__trigger {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  width: 100%;
  padding: 0.8rem 0.9rem;
  font: inherit;
  text-align: left;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

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

.page-faq .faq-item__code {
  flex: none;
  padding-top: 0.2rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--deep-blue);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 0.96rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--graphite);
}

.page-faq .faq-item__mark {
  position: relative;
  flex: none;
  width: 0.9rem;
  height: 0.9rem;
  margin-top: 0.35rem;
}

.page-faq .faq-item__mark::before {
  content: "";
  position: absolute;
  top: calc(50% - 1px);
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--graphite);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  top: 0;
  left: calc(50% - 1px);
  width: 2px;
  height: 100%;
  background: var(--graphite);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease), background var(--dur) var(--ease);
}

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

.page-faq .faq-item[data-open] .faq-item__mark::before,
.page-faq .faq-item[data-open] .faq-item__mark::after {
  background: var(--deep-blue);
}

.page-faq .faq-item__panel {
  padding: 0.85rem 0.9rem 1rem;
  background: var(--ice-soft);
  border-top: 1px solid var(--hair);
}

.page-faq .faq-item__answer {
  margin: 0 0 0.6rem;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--graphite);
}

.page-faq .faq-item__answer strong {
  color: var(--ink);
  box-shadow: inset 0 -0.24em 0 var(--teal);
}

.page-faq .faq-item__steps {
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.3rem;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--graphite);
}

.page-faq .faq-item__steps li::marker {
  font-family: var(--font-mono);
  color: var(--deep-blue);
}

/* 联络区块 */
.page-faq .faq-help {
  margin-top: clamp(1.75rem, 4.5vw, 3rem);
  padding: clamp(1.3rem, 3.5vw, 2.3rem);
  background: var(--ink);
  border: var(--faq-rule);
  box-shadow: 8px 8px 0 var(--teal);
  scroll-margin-top: 5rem;
}

.page-faq .faq-help h2 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--frost);
}

.page-faq .faq-help p {
  margin: 0 0 1.2rem;
  max-width: 42rem;
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--ice);
}

.page-faq .faq-help__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.6rem;
}

.page-faq .faq-help__item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.7rem;
  padding: 0.7rem 0.85rem;
  background: rgba(244, 248, 246, 0.06);
  border: 1px solid rgba(244, 248, 246, 0.26);
}

.page-faq .faq-help__label {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--ice);
}

.page-faq .faq-help__value {
  min-width: 0;
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--frost);
  word-break: break-word;
}

.page-faq .copy-btn {
  margin-left: auto;
  padding: 0.26rem 0.58rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--teal);
  background: transparent;
  border: 1px solid var(--teal);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .copy-btn:hover,
.page-faq .copy-btn:focus-visible {
  background: var(--teal);
  color: var(--ink);
}

.page-faq .copy-btn:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-faq .copy-btn.is-copied {
  color: var(--ink);
  background: var(--amber);
  border-color: var(--amber);
}

.page-faq .link--invert {
  color: var(--teal);
}

/* 平板 */
@media (min-width: 40rem) {
  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-path {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.7rem;
  }

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

  .page-faq .faq-help__item--wide {
    grid-column: 1 / -1;
  }

  .page-faq .faq-hero__strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* 桌面 */
@media (min-width: 64rem) {
  .page-faq .faq-index {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 14rem;
  }

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

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

  .page-faq .faq-hero__figure {
    aspect-ratio: 7 / 4;
  }

  .page-faq .faq-item__panel {
    padding-left: 2.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__card,
  .page-faq .faq-toc__list a,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .copy-btn {
    transition: none;
  }

  .page-faq .faq-index__card:hover,
  .page-faq .faq-index__card:focus-visible {
    transform: none;
  }
}
<<<END>>>