.page-faq {
  --faq-side: 15rem;
  --faq-tint: rgba(107, 127, 91, .09);
  --faq-hover: rgba(53, 208, 186, .14);
}

/* 面包屑 */
.page-faq .breadcrumb {
  margin: .25rem 0 0;
  font-size: .82rem;
  color: var(--ink-soft);
}

.page-faq .breadcrumb a {
  color: var(--navy-800);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 1px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .breadcrumb a:hover {
  color: var(--cyan-deep);
  border-color: var(--cyan-400);
}

.page-faq .breadcrumb__sep {
  margin: 0 .5rem;
  color: var(--line-strong);
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: 1.75rem;
  padding: 1.75rem 0 2.5rem;
}

.page-faq .faq-hero__text .eyebrow {
  color: var(--terracotta);
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  margin: 0;
}

.page-faq .faq-hero h1 {
  margin: .65rem 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.85rem, 7vw, 3rem);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--navy-900);
  max-width: 20ch;
}

.page-faq .faq-hero .lede {
  margin: 1rem 0 0;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 48ch;
}

.page-faq .faq-hero .btn {
  margin-top: 1.35rem;
}

.page-faq .faq-hero__art {
  position: relative;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-hero__art img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius);
}

.page-faq .faq-hero__art::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 38%;
  height: 5px;
  background: var(--orange-600);
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .72fr);
    align-items: center;
    gap: clamp(2rem, 5vw, 4rem);
    padding: 2.5rem 0 3.5rem;
  }
  .page-faq .faq-hero__art img {
    aspect-ratio: 3 / 4;
  }
}

/* 主体两栏 */
.page-faq .faq-layout {
  display: grid;
  gap: 1.75rem;
  padding-bottom: 3rem;
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-side) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
    padding-bottom: 4.5rem;
  }
}

/* 左侧主题索引 */
.page-faq .faq-toc__inner {
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--navy-800);
  border-radius: var(--radius);
  padding: 1rem 1rem 1.15rem;
  box-shadow: var(--shadow-1);
}

@media (min-width: 1024px) {
  .page-faq .faq-toc__inner {
    position: sticky;
    top: 1.5rem;
  }
}

.page-faq .faq-toc__label {
  margin: 0 0 .85rem;
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--stone);
}

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

@media (min-width: 640px) and (max-width: 1023px) {
  .page-faq .faq-toc__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .2rem .6rem;
  }
}

.page-faq .faq-toc__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: .65rem;
  padding: .55rem .65rem;
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--ink);
  font-size: .92rem;
  font-weight: 500;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-toc__link:hover {
  background: var(--faq-hover);
  color: var(--navy-900);
}

.page-faq .faq-toc__link:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 2px;
}

.page-faq .faq-toc__dot {
  width: .68rem;
  height: .68rem;
  border-radius: 50%;
  border: 2px solid var(--stone);
  opacity: .45;
  transition: opacity var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-toc__link:hover .faq-toc__dot {
  opacity: 1;
  border-color: var(--cyan-deep);
}

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

.page-faq .faq-toc__count {
  font-size: .72rem;
  color: var(--terracotta);
  letter-spacing: .04em;
}

.page-faq .faq-toc__total {
  margin: .95rem 0 0;
  padding-top: .85rem;
  border-top: 1px dashed var(--line-strong);
  font-size: .82rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* 右侧问答主体 */
.page-faq .faq-body {
  display: grid;
  gap: 2.75rem;
  min-width: 0;
}

.page-faq .faq-topic {
  scroll-margin-top: 5.5rem;
  min-width: 0;
}

.page-faq .faq-topic__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .4rem .9rem;
  padding-bottom: .7rem;
  border-bottom: 2px solid var(--navy-800);
}

.page-faq .faq-topic__index {
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--orange-600);
  margin: 0;
}

.page-faq .faq-topic__head .section-title {
  flex: 1 1 auto;
  margin: 0;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--navy-900);
}

.page-faq .faq-topic__count {
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--moss);
}

.page-faq .faq-topic__desc {
  flex: 1 0 100%;
  margin: 0;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-faq .faq-list {
  margin-top: .9rem;
}

/* 折叠问题条目 */
.page-faq .qa {
  border: 1px solid var(--line);
  border-left: 3px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--white);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .qa + .qa {
  margin-top: .55rem;
}

.page-faq .qa:hover {
  border-left-color: var(--terracotta);
}

.page-faq .qa[open] {
  background: var(--faq-tint);
  border-left-color: var(--moss);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: .75rem;
  align-items: start;
  padding: .95rem 1rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: .98rem;
  line-height: 1.6;
  color: var(--navy-800);
}

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

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

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: -2px;
}

.page-faq .qa__no {
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--terracotta);
  padding-top: .3rem;
}

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

.page-faq .qa__mark {
  justify-self: end;
  width: .58rem;
  height: .58rem;
  margin-top: .48rem;
  border-right: 2px solid var(--stone);
  border-bottom: 2px solid var(--stone);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .qa[open] .qa__mark {
  transform: rotate(-135deg);
  border-color: var(--moss);
}

.page-faq .qa__a {
  padding: .85rem 1rem 1.05rem;
  border-top: 1px solid var(--line);
  font-size: .92rem;
  line-height: 1.85;
  color: var(--ink);
}

@media (min-width: 640px) {
  .page-faq .qa__a {
    padding-left: 2.9rem;
  }
}

.page-faq .qa__a p {
  margin: 0;
}

.page-faq .qa__a p + p {
  margin-top: .6rem;
}

/* 步骤列表 */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .45rem;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 1.9rem minmax(0, 1fr);
  gap: .5rem;
  align-items: baseline;
  font-size: .9rem;
  line-height: 1.75;
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--cyan-deep);
}

/* 章节配图 */
.page-faq .faq-figure {
  margin: 1.35rem 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.page-faq .faq-figure figcaption {
  margin-top: .6rem;
  padding-left: .7rem;
  border-left: 2px solid var(--moss);
  font-size: .8rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* 联系引导块 */
.page-faq .faq-contact {
  position: relative;
  border-radius: var(--radius);
  padding: 1.75rem 1.35rem;
  background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-700) 58%, var(--navy-800) 100%);
  overflow: hidden;
}

.page-faq .faq-contact::after {
  content: "";
  position: absolute;
  top: -30%;
  right: -12%;
  width: 42%;
  height: 160%;
  background: linear-gradient(90deg, transparent, rgba(53, 208, 186, .16));
  transform: skewX(-18deg);
  pointer-events: none;
}

.page-faq .faq-contact .section-title {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--white);
  position: relative;
  z-index: 1;
}

.page-faq .faq-contact p {
  position: relative;
  z-index: 1;
  margin: .75rem 0 0;
  font-size: .92rem;
  line-height: 1.85;
  color: rgba(245, 241, 232, .84);
  max-width: 54ch;
}

.page-faq .faq-contact .btn {
  position: relative;
  z-index: 1;
  margin-top: 1.2rem;
}

@media (min-width: 768px) {
  .page-faq .faq-contact {
    padding: 2.25rem 2rem;
  }
  .page-faq .faq-contact .section-title {
    font-size: 1.45rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__mark,
  .page-faq .qa__q,
  .page-faq .faq-toc__link,
  .page-faq .faq-toc__dot {
    transition: none;
  }
}