.page-faq {
  --faq-gutter: clamp(16px, 4vw, 40px);
  --faq-max: var(--shell);
  --faq-anchor: 104px;
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* 面包屑 */
.page-faq .faq-crumb {
  max-width: var(--faq-max);
  margin: 0 auto;
  padding: 22px var(--faq-gutter) 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}
.page-faq .faq-crumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-crumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--ink-600);
}
.page-faq .faq-crumb a {
  color: var(--muted);
  text-decoration: none;
}
.page-faq .faq-crumb a:hover,
.page-faq .faq-crumb a:focus-visible {
  color: var(--cyan);
}

/* 首屏 */
.page-faq .faq-hero {
  max-width: var(--faq-max);
  margin: 0 auto;
  padding: clamp(26px, 5vw, 54px) var(--faq-gutter) clamp(28px, 4.5vw, 56px);
  display: grid;
  gap: clamp(22px, 3.5vw, 44px);
}
.page-faq .faq-hero-copy {
  min-width: 0;
}
.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.15rem, 6.6vw, 4.4rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin: 12px 0 18px;
  text-wrap: balance;
}
.page-faq .faq-lede {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--paper);
}
.page-faq .faq-hero-note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
  padding-left: 12px;
  border-left: 2px solid var(--ink-600);
}

.page-faq .faq-hero-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
  overflow: hidden;
}
.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.06);
}
.page-faq .faq-hero-figure .media-cap {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--muted);
}

/* 索引墙 */
.page-faq .faq-index {
  max-width: var(--faq-max);
  margin: 0 auto;
  padding: 0 var(--faq-gutter) clamp(30px, 5vw, 56px);
}
.page-faq .faq-index-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}
.page-faq .faq-index-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.6vw, 1.4rem);
  font-weight: 600;
  letter-spacing: 0.01em;
}
.page-faq .faq-index-total {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
  white-space: nowrap;
}
.page-faq .faq-index-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-index-item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 100px;
  padding: 16px 16px 14px 18px;
  border: 1px solid var(--line);
  background: linear-gradient(158deg, var(--ink-700), var(--ink-900) 74%);
  color: var(--paper);
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}
.page-faq .faq-index-item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--cyan);
  transform: scaleY(0.26);
  transform-origin: top;
  transition: transform 0.22s var(--ease);
}
.page-faq .faq-index-item:hover,
.page-faq .faq-index-item:focus-visible {
  transform: translateY(-2px);
  border-color: var(--cyan);
}
.page-faq .faq-index-item:hover::after,
.page-faq .faq-index-item:focus-visible::after,
.page-faq .faq-index-item[data-current]::after {
  transform: scaleY(1);
}
.page-faq .faq-index-item[data-current] {
  border-color: var(--cyan);
  background: linear-gradient(158deg, var(--ink-600), var(--ink-900) 74%);
}
.page-faq .faq-index-num {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--amber);
}
.page-faq .faq-index-name {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.45;
}
.page-faq .faq-index-count {
  margin-top: auto;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* 主布局 */
.page-faq .faq-layout {
  max-width: var(--faq-max);
  margin: 0 auto;
  padding: clamp(26px, 4vw, 44px) var(--faq-gutter) clamp(36px, 6vw, 76px);
  display: grid;
  gap: clamp(22px, 4vw, 48px);
  border-top: 1px solid var(--line-soft);
}

/* 侧栏 */
.page-faq .faq-aside {
  min-width: 0;
  display: grid;
  gap: 16px;
  align-content: start;
}
.page-faq .faq-side-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}
.page-faq .faq-side-list::-webkit-scrollbar {
  display: none;
}
.page-faq .faq-side-link {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.page-faq .faq-side-link .num {
  font-family: var(--font-num);
  font-size: 11px;
  color: var(--amber);
}
.page-faq .faq-side-link:hover,
.page-faq .faq-side-link:focus-visible {
  color: var(--paper);
  border-color: var(--cyan);
}
.page-faq .faq-side-link[data-current] {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}
.page-faq .faq-side-link[data-current] .num {
  color: var(--ink-700);
}
.page-faq .faq-aside-mail {
  display: none;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}
.page-faq .faq-aside-mail p {
  margin: 0 0 8px;
}
.page-faq .faq-aside-mail strong {
  display: block;
  font-family: var(--font-num);
  font-size: 12.5px;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--cyan);
  word-break: break-all;
}

/* 分组 */
.page-faq .faq-body {
  min-width: 0;
}
.page-faq .faq-group {
  scroll-margin-top: var(--faq-anchor);
  padding-top: clamp(22px, 4vw, 40px);
  border-top: 1px solid var(--line-soft);
}
.page-faq .faq-group:first-child {
  padding-top: 0;
  border-top: 0;
}
.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 2px 12px;
  align-items: baseline;
  margin-bottom: 16px;
}
.page-faq .faq-group-no {
  font-family: var(--font-num);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--amber);
  padding-top: 4px;
}
.page-faq .faq-group-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.6vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.12;
}
.page-faq .faq-group-lede {
  grid-column: 2;
  margin: 4px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 58ch;
}

/* 更新节奏图 */
.page-faq .faq-rhythm {
  margin: 0 0 20px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  overflow: hidden;
}
.page-faq .faq-rhythm img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  opacity: 0.92;
}
.page-faq .faq-rhythm figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* 手风琴 */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line-soft);
}
.page-faq .faq-item summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 4px 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.62;
  color: var(--paper);
  transition: color 0.2s var(--ease);
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  height: 18px;
  width: 3px;
  background: var(--ink-600);
  transition: background 0.2s var(--ease), height 0.2s var(--ease);
}
.page-faq .faq-item summary:hover {
  color: var(--cyan);
}
.page-faq .faq-item[open] summary {
  color: var(--cyan);
}
.page-faq .faq-item[open] summary::before {
  height: 26px;
  background: var(--cyan);
}
.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}
.page-faq .faq-marker {
  position: relative;
  flex: 0 0 auto;
  width: 15px;
  height: 15px;
  margin-top: 4px;
  border: 1px solid var(--muted);
  border-radius: 50%;
  transition: border-color 0.2s var(--ease);
}
.page-faq .faq-marker::before,
.page-faq .faq-marker::after {
  content: "";
  position: absolute;
  background: var(--muted);
  transition: transform 0.22s var(--ease), background 0.2s var(--ease);
}
.page-faq .faq-marker::before {
  left: 3px;
  right: 3px;
  top: 50%;
  height: 1px;
  transform: translateY(-50%);
}
.page-faq .faq-marker::after {
  top: 3px;
  bottom: 3px;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
}
.page-faq .faq-item[open] .faq-marker {
  border-color: var(--cyan);
}
.page-faq .faq-item[open] .faq-marker::before,
.page-faq .faq-item[open] .faq-marker::after {
  background: var(--cyan);
}
.page-faq .faq-item[open] .faq-marker::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .faq-answer {
  padding: 0 4px 18px 16px;
  animation: faq-reveal 0.22s var(--ease);
}
.page-faq .faq-answer p {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--muted);
}
.page-faq .faq-answer a {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-color: var(--cyan-soft);
  text-underline-offset: 3px;
}
.page-faq .faq-answer a:hover,
.page-faq .faq-answer a:focus-visible {
  text-decoration-color: var(--cyan);
}
@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* 收尾 */
.page-faq .faq-next {
  max-width: var(--faq-max);
  margin: 0 auto;
  padding: clamp(32px, 5.5vw, 68px) var(--faq-gutter) clamp(44px, 7vw, 88px);
  border-top: 1px solid var(--line);
  position: relative;
}
.page-faq .faq-next::before {
  content: "";
  position: absolute;
  left: var(--faq-gutter);
  top: -1px;
  width: 68px;
  height: 2px;
  background: var(--amber);
}
.page-faq .faq-next h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4.4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
}
.page-faq .faq-next-lede {
  margin: 0 0 22px;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}
.page-faq .faq-next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
}
.page-faq .faq-next-contact {
  margin: 0 0 6px;
  font-family: var(--font-num);
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--paper);
  word-break: break-word;
}
.page-faq .faq-next-note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* 响应式 */
@media (min-width: 600px) {
  .page-faq .faq-index-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    align-items: end;
  }
  .page-faq .faq-hero-figure {
    align-self: stretch;
  }
  .page-faq .faq-hero-figure img {
    aspect-ratio: 10 / 9;
  }
  .page-faq .faq-rhythm {
    max-width: 470px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-aside {
    position: sticky;
    top: var(--faq-anchor);
    gap: 20px;
  }
  .page-faq .faq-side-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0;
  }
  .page-faq .faq-side-link {
    justify-content: space-between;
    min-height: 44px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: 9px 12px;
  }
  .page-faq .faq-side-link:hover,
  .page-faq .faq-side-link:focus-visible {
    background: var(--ink-700);
    border-left-color: var(--line);
  }
  .page-faq .faq-side-link[data-current] {
    color: var(--cyan);
    background: var(--cyan-soft);
    border-color: transparent;
    border-left-color: var(--cyan);
  }
  .page-faq .faq-side-link[data-current] .num {
    color: var(--amber);
  }
  .page-faq .faq-aside-mail {
    display: block;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-index-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index-item,
  .page-faq .faq-index-item::after,
  .page-faq .faq-marker,
  .page-faq .faq-marker::before,
  .page-faq .faq-marker::after,
  .page-faq .faq-side-link,
  .page-faq .faq-item summary,
  .page-faq .faq-item summary::before {
    transition: none;
  }
  .page-faq .faq-answer {
    animation: none;
  }
}
<<<END>>>