.page-faq {
  --faq-body: #C9D3E0;
  --faq-rail: 240px;
  padding-block: clamp(20px, 3vw, 40px) clamp(72px, 9vw, 112px);
}

.page-faq .sf-breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  align-items: end;
  padding-bottom: clamp(32px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-hero__text .sf-lead {
  max-width: 620px;
  margin-top: 16px;
}

.page-faq .faq-hero__figure,
.page-faq .faq-group__figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .faq-hero__figure {
  aspect-ratio: 11 / 7;
}

.page-faq .faq-group__figure {
  aspect-ratio: 3 / 2;
  margin-bottom: 8px;
}

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

@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 64px);
  }
}

/* 布局骨架 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 56px);
  padding-top: clamp(32px, 5vw, 56px);
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(40px, 6vw, 80px);
  }
}

/* 场景标签栏 */
.page-faq .faq-scene-nav {
  min-width: 0;
}

.page-faq .faq-scene-nav__title {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--wine);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-faq .faq-scene-nav__list {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-scene-nav__item {
  flex: 0 0 auto;
}

.page-faq .faq-scene-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  color: var(--paper);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-scene-nav__link .sf-num {
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--mint);
}

.page-faq .faq-scene-nav__link:hover,
.page-faq .faq-scene-nav__link:focus-visible {
  border-color: var(--mint);
  background: var(--panel);
  color: var(--mint);
}

.page-faq .faq-scene-nav__link:active {
  background: var(--ink-deep);
}

.page-faq .faq-scene-nav__note {
  margin: 16px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
}

@media (min-width: 960px) {
  .page-faq .faq-scene-nav {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
  }

  .page-faq .faq-scene-nav__list {
    flex-direction: column;
    gap: 0;
    padding: 0;
    overflow: visible;
  }

  .page-faq .faq-scene-nav__item {
    width: 100%;
  }

  .page-faq .faq-scene-nav__link {
    display: flex;
    width: 100%;
    padding: 12px 12px 12px 14px;
    border: 0;
    border-left: 2px solid var(--line);
    background: transparent;
    white-space: normal;
  }

  .page-faq .faq-scene-nav__link:hover,
  .page-faq .faq-scene-nav__link:focus-visible {
    border-left-color: var(--mint);
    background: linear-gradient(90deg, rgba(34, 224, 180, .12), rgba(34, 224, 180, 0) 72%);
    color: var(--mint);
  }
}

/* 问题流 */
.page-faq .faq-stream {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: clamp(40px, 5vw, 64px);
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 16px);
  padding-top: clamp(28px, 4vw, 44px);
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 6px 14px;
  margin-bottom: 18px;
}

.page-faq .faq-group__index {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--mint);
}

.page-faq .faq-group__head .sf-h2 {
  margin: 0;
}

.page-faq .faq-group__meta {
  grid-column: 2 / -1;
  margin: 0;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

/* 问题条目 */
.page-faq .faq-list {
  border-top: 1px solid var(--line);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  transition: background-color var(--dur) var(--ease);
}

.page-faq .faq-item[open] {
  background: linear-gradient(180deg, rgba(21, 31, 51, .78), rgba(21, 31, 51, 0) 78%);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 4px;
  list-style: none;
  cursor: pointer;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-q::marker {
  content: "";
}

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

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

.page-faq .faq-q__marker {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
  color: var(--mist);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-q__marker::after {
  content: "+";
}

.page-faq .faq-item[open] .faq-q__marker {
  background: var(--mint);
  border-color: var(--mint);
  color: var(--ink);
}

.page-faq .faq-item[open] .faq-q__marker::after {
  content: "\2212";
}

.page-faq .faq-q__text {
  font-size: clamp(15px, 1.4vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  letter-spacing: .01em;
}

/* 答案区 */
.page-faq .faq-a {
  max-width: 680px;
  padding: 0 4px 22px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--faq-body);
}

.page-faq .faq-a p {
  margin: 0 0 12px;
}

.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}

@media (min-width: 720px) {
  .page-faq .faq-a {
    padding: 0 4px 26px 50px;
  }
}

/* 编号步骤 */
.page-faq .faq-steps {
  counter-reset: faqstep;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 12px;
  padding: 9px 0;
  border-top: 1px solid var(--line-soft);
  font-size: 14.5px;
  line-height: 1.72;
}

.page-faq .faq-steps li:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  align-self: stretch;
  padding-top: 3px;
  padding-right: 10px;
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mint);
}

/* 结尾提示 */
.page-faq .faq-callout {
  margin-top: clamp(28px, 4vw, 44px);
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--warm);
  background: linear-gradient(135deg, rgba(43, 43, 107, .38), rgba(21, 31, 51, .72));
}

.page-faq .faq-callout__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--warm);
}

.page-faq .faq-callout__text {
  max-width: 640px;
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--faq-body);
}

.page-faq .faq-callout__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

@media (max-width: 420px) {
  .page-faq .faq-callout__links .sf-btn {
    width: 100%;
    text-align: center;
  }
}