.page-faq {
  padding-block: 0 clamp(3rem, 8vw, 6rem);
}

.page-faq .crumbs {
  margin: clamp(1.2rem, 3vw, 1.9rem) 0 clamp(1.6rem, 4vw, 2.6rem);
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(1.8rem, 4vw, 3rem);
  align-items: start;
}

.page-faq .faq-kicker {
  margin: 0 0 1rem;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-hero h1 {
  margin: 0 0 1.1rem;
  font-size: clamp(2.2rem, 6.2vw, 4.1rem);
  line-height: 1.04;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--paper);
}

.page-faq .faq-lead {
  margin: 0 0 1.6rem;
  max-width: 46ch;
  font-size: clamp(0.94rem, 1.5vw, 1.02rem);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-tags a {
  display: inline-block;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--glass);
  color: var(--paper);
  font-size: 0.82rem;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-tags a:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  background: var(--raise);
  transform: translateY(-1px);
}

.page-faq .faq-tags a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-hero__fig {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--raise);
}

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

/* 三步路径 */
.page-faq .faq-steps-sec {
  margin-top: clamp(2.8rem, 7vw, 5.2rem);
}

.page-faq .faq-steps {
  margin: clamp(1.4rem, 3vw, 2rem) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--line);
  overflow: hidden;
}

.page-faq .faq-steps > li {
  position: relative;
  padding: clamp(1.25rem, 3vw, 1.8rem);
  background: var(--surface);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-steps > li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(85, 230, 210, 0) 88%);
  opacity: 0.55;
}

.page-faq .faq-steps > li:hover {
  background: var(--raise);
}

.page-faq .faq-steps__num {
  display: block;
  margin-bottom: 0.7rem;
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-faq .faq-steps__title {
  margin: 0 0 0.55rem;
  font-size: 1.06rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-steps > li p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--muted);
}

/* 主体：索引 + 问答 */
.page-faq .faq-body {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.4rem);
  margin-top: clamp(2.8rem, 7vw, 5.2rem);
}

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

.page-faq .faq-rail__label {
  margin: 0 0 0.8rem;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-index ol {
  display: flex;
  gap: 0.4rem;
  margin: 0;
  padding: 0 0 0.4rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index li {
  flex: 0 0 auto;
}

.page-faq .faq-index a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: var(--r);
  color: var(--muted);
  font-size: 0.82rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a[aria-current="true"] {
  color: var(--paper);
  border-color: var(--cyan);
  background: var(--glass);
}

.page-faq .faq-index a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-index a .mono {
  font-size: 0.76em;
  color: var(--amber);
}

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

.page-faq .faq-main__title {
  margin: 0 0 clamp(1.2rem, 3vw, 1.7rem);
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--paper);
}

.page-faq .faq-group {
  padding: clamp(1.1rem, 3vw, 1.75rem);
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--surface);
  scroll-margin-top: 7rem;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(1rem, 2.5vw, 1.5rem);
}

.page-faq .faq-group__title {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin: 0 0 0.35rem;
  font-size: clamp(1.08rem, 2.2vw, 1.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-group__title .mono {
  font-size: 0.8em;
  font-weight: 600;
  color: var(--amber);
}

.page-faq .faq-group__note {
  margin: 0 0 0.9rem;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-faq .faq-q {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-q summary {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  padding: 0.9rem 0;
  list-style: none;
  cursor: pointer;
  font-size: 0.96rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-q summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1.35;
  color: var(--cyan);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-q[open] summary::after {
  transform: rotate(45deg);
}

.page-faq .faq-q summary:hover {
  color: var(--cyan);
}

.page-faq .faq-q summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-q__q {
  flex: 1 1 auto;
}

.page-faq .faq-q p {
  margin: 0 0 0.95rem;
  max-width: 62ch;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--muted);
}

/* 移动端栏目树 */
.page-faq .faq-tree {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
  align-items: start;
  margin-top: clamp(3rem, 7vw, 5.2rem);
}

.page-faq .faq-tree h2 {
  margin: 0 0 0.9rem;
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--paper);
}

.page-faq .faq-tree__text p {
  margin: 0 0 1.2rem;
  max-width: 52ch;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-tree__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-tree__list li {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-tree__list strong {
  display: block;
  margin-bottom: 0.2rem;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-tree__fig {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--raise);
}

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

/* 版本与更新 */
.page-faq .faq-update {
  margin-top: clamp(3rem, 7vw, 5.2rem);
}

.page-faq .faq-update h2 {
  margin: 0 0 0.9rem;
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--paper);
}

.page-faq .faq-update__lead {
  margin: 0 0 clamp(1.4rem, 3vw, 2rem);
  max-width: 64ch;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-cadence {
  margin: 0 0 1.4rem;
  display: grid;
  border-top: 1px solid var(--line);
}

.page-faq .faq-cadence__row {
  display: grid;
  gap: 0.3rem;
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-cadence dt {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-cadence dd {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-update__foot {
  margin: 0;
  padding: 0.9rem 1rem;
  border-left: 2px solid var(--clay);
  border-radius: 0 var(--r) var(--r) 0;
  background: var(--glass);
  font-size: 0.87rem;
  line-height: 1.8;
  color: var(--muted);
}

/* 联系 */
.page-faq .faq-contact {
  margin-top: clamp(3rem, 7vw, 5.2rem);
  padding-top: clamp(1.6rem, 4vw, 2.4rem);
  border-top: 1px solid var(--line);
}

.page-faq .faq-contact h2 {
  margin: 0 0 1.4rem;
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--paper);
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--line);
  overflow: hidden;
}

.page-faq .faq-contact__cell {
  padding: clamp(1.1rem, 3vw, 1.6rem);
  background: var(--surface);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-contact__cell:hover {
  background: var(--raise);
}

.page-faq .faq-contact__cell--accent {
  background: var(--raise);
  box-shadow: inset 0 2px 0 0 var(--cyan);
}

.page-faq .faq-contact__label {
  margin: 0 0 0.55rem;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-contact__cell--accent .faq-contact__label {
  color: var(--amber);
}

.page-faq .faq-contact__value {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__note {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-contact__meta {
  margin: 1.1rem 0 0;
  font-size: 0.84rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-contact__more {
  margin: 0.8rem 0 0;
}

.page-faq .faq-contact__more a {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(85, 230, 210, 0.45);
  color: var(--cyan);
  font-size: 0.9rem;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease);
}

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

.page-faq .faq-contact__more a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* 继续探索 */
.page-faq .faq-next {
  margin-top: clamp(2.6rem, 6vw, 4.4rem);
}

.page-faq .faq-next h2 {
  margin: 0 0 1.2rem;
  font-size: clamp(1.25rem, 2.6vw, 1.7rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-next__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  border-top: 1px solid var(--line);
}

.page-faq .faq-next__list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-next__list a {
  display: inline-block;
  border-bottom: 2px solid transparent;
  color: var(--paper);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-faq .faq-next__list a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .faq-next__list span {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--muted);
}

/* 响应式 */
@media (min-width: 720px) {
  .page-faq .faq-cadence__row {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 1.4rem;
    align-items: baseline;
  }
}

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

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

  .page-faq .faq-next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(1.5rem, 4vw, 3rem);
  }
}

@media (min-width: 820px) {
  .page-faq .faq-tree {
    grid-template-columns: minmax(0, 1fr) minmax(0, 330px);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: end;
  }
}

@media (min-width: 940px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(180px, 220px) minmax(0, 1fr);
    gap: clamp(2.2rem, 4.5vw, 3.6rem);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 7rem;
  }

  .page-faq .faq-index ol {
    display: grid;
    gap: 0.1rem;
    padding-bottom: 0;
    overflow: visible;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-index li {
    flex: initial;
  }

  .page-faq .faq-index a {
    display: flex;
    margin-left: -1px;
    padding: 0.52rem 0.7rem;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    white-space: normal;
  }
}
<<<END>>>