.page-faq {
  --faq-hair: rgba(242, 245, 248, .16);
  --faq-hair-ink: rgba(11, 17, 22, .13);
  --faq-body-ink: #253545;
  display: block;
  overflow-x: clip;
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.25rem, 3vw, 2rem) 0 clamp(2.75rem, 7vw, 4.75rem);
  background:
    radial-gradient(130% 100% at 92% 0%, rgba(43, 227, 218, .18), transparent 60%),
    radial-gradient(100% 85% at 0% 100%, rgba(122, 92, 255, .22), transparent 64%),
    var(--deep-sea);
  color: var(--text-inverse);
}

.page-faq .faq-hero .breadcrumbs__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  font-size: var(--step-1);
}

.page-faq .faq-hero .breadcrumbs__item {
  color: rgba(242, 245, 248, .58);
}

.page-faq .faq-hero .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: .4rem;
  color: rgba(242, 245, 248, .35);
}

.page-faq .faq-hero .breadcrumbs__link {
  color: rgba(242, 245, 248, .78);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-hero .breadcrumbs__link:hover {
  border-bottom-color: var(--electric-cyan);
  color: var(--electric-cyan);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: clamp(1.5rem, 4vw, 2.75rem);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
    align-items: end;
    column-gap: clamp(2rem, 5vw, 4.5rem);
  }
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 .9rem;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--electric-cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 var(--space-3);
  max-width: 21ch;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 5.3vw, 3.1rem);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--text-inverse);
}

.page-faq .faq-hero__lead {
  margin: 0 0 var(--space-4);
  max-width: 60ch;
  font-size: var(--step-3);
  line-height: 1.82;
  color: rgba(242, 245, 248, .82);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.page-faq .faq-hero__aside {
  border-left: 2px solid var(--amber-gold);
  padding: .35rem 0 .35rem 1.25rem;
}

.page-faq .faq-hero__aside-title {
  margin: 0 0 .9rem;
  font-family: var(--font-editorial);
  font-size: var(--step-3);
  letter-spacing: .02em;
  color: var(--amber-gold);
}

.page-faq .faq-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .7rem;
}

.page-faq .faq-facts li {
  font-size: var(--step-2);
  line-height: 1.72;
  color: rgba(242, 245, 248, .88);
}

.page-faq .faq-facts .numeric {
  font-family: var(--font-mono);
  color: var(--amber-gold);
  letter-spacing: .04em;
}

/* ---------- 双栏主体 ---------- */

.page-faq .faq-body {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-block: clamp(2.25rem, 6vw, 4rem) clamp(2.5rem, 6vw, 4.5rem);
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: 232px minmax(0, 1fr);
    column-gap: clamp(2.5rem, 5vw, 4.5rem);
    align-items: start;
  }
}

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

@media (min-width: 1000px) {
  .page-faq .faq-aside {
    position: sticky;
    top: 112px;
  }
}

.page-faq .faq-toc .toc__title {
  margin: 0 0 .85rem;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-faq .faq-toc .toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  padding-bottom: .5rem;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-toc .toc__item {
  flex: 0 0 auto;
}

.page-faq .faq-toc .toc__link {
  display: block;
  padding: .55rem .7rem;
  border-bottom: 2px solid var(--faq-hair-ink);
  white-space: nowrap;
  font-size: var(--step-2);
  line-height: 1.5;
  color: var(--faq-body-ink);
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-toc .toc__link:hover {
  color: var(--cyan-ink);
  border-bottom-color: var(--cyan-ink);
}

.page-faq .faq-toc .toc__link[aria-current="true"] {
  color: var(--deep-sea);
  font-weight: 600;
  border-bottom-color: var(--electric-cyan);
  background: rgba(43, 227, 218, .12);
}

@media (min-width: 1000px) {
  .page-faq .faq-toc .toc__list {
    display: grid;
    gap: .1rem;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc .toc__item {
    flex: initial;
  }

  .page-faq .faq-toc .toc__link {
    border-bottom: 0;
    border-left: 2px solid var(--faq-hair-ink);
    border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
    white-space: normal;
  }

  .page-faq .faq-toc .toc__link[aria-current="true"] {
    border-left-color: var(--electric-cyan);
  }
}

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

/* ---------- 章节块 ---------- */

.page-faq .faq-block {
  padding-block: clamp(1.75rem, 4vw, 2.75rem);
  border-top: 1px solid var(--faq-hair-ink);
}

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

.page-faq .faq-block__head {
  margin-bottom: clamp(1.25rem, 3vw, 1.9rem);
}

.page-faq .faq-block__index {
  margin: 0 0 .6rem;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan-ink);
}

.page-faq .faq-block__title {
  margin: 0 0 .65rem;
  font-family: var(--font-display);
  font-size: var(--step-5);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -.015em;
  color: var(--ink);
}

.page-faq .faq-block__lead {
  margin: 0;
  max-width: 56ch;
  font-size: var(--step-3);
  line-height: 1.8;
  color: var(--faq-body-ink);
}

/* ---------- 图片 ---------- */

.page-faq .faq-figure {
  margin: 0 0 clamp(1.5rem, 4vw, 2.25rem);
}

.page-faq .faq-figure .media {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--night-navy);
}

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

.page-faq .faq-figure .figure__caption {
  margin-top: .7rem;
  font-size: var(--step-1);
  line-height: 1.6;
  color: var(--slate);
}

/* ---------- 三步 ---------- */

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.35rem;
}

@media (min-width: 780px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.75rem;
  }
}

.page-faq .faq-steps__item {
  padding-top: 1rem;
  border-top: 2px solid var(--amber-gold);
}

.page-faq .faq-steps__num {
  display: block;
  margin-bottom: .4rem;
  font-family: var(--font-mono);
  font-size: var(--step-4);
  letter-spacing: .04em;
  color: var(--amber-deep);
}

.page-faq .faq-steps__title {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .faq-steps__text {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.82;
  color: var(--faq-body-ink);
}

.page-faq .faq-steps__text .numeric {
  font-family: var(--font-mono);
  letter-spacing: .04em;
  color: var(--cyan-ink);
}

/* ---------- 刊头解剖 ---------- */

.page-faq .faq-anatomy {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: .85rem;
}

.page-faq .faq-anatomy__item {
  display: grid;
  gap: .35rem;
  padding: 1rem 1.15rem;
  background: var(--surface-alt);
  border-left: 3px solid var(--electric-cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.page-faq .faq-anatomy__label {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .1em;
  color: var(--cyan-ink);
}

.page-faq .faq-anatomy__text {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.8;
  color: var(--faq-body-ink);
}

.page-faq .faq-note {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.8;
  color: var(--faq-body-ink);
}

.page-faq .faq-note a {
  color: var(--cyan-ink);
  text-decoration: none;
  border-bottom: 1px solid rgba(12, 124, 116, .4);
}

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

/* ---------- 费用场景 ---------- */

.page-faq .faq-lane {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: 1rem;
}

@media (min-width: 720px) {
  .page-faq .faq-lane {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .faq-lane__item {
  padding: 1.15rem 1.3rem;
  background: var(--night-navy);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-lane__q {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 700;
  line-height: 1.45;
  color: var(--amber-gold);
}

.page-faq .faq-lane__a {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.8;
  color: rgba(242, 245, 248, .86);
}

/* ---------- 文档检索数据条 ---------- */

.page-faq .faq-metrics {
  list-style: none;
  margin: 0 0 clamp(1.5rem, 4vw, 2.25rem);
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--faq-hair-ink);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

@media (min-width: 640px) {
  .page-faq .faq-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-faq .faq-metrics__item {
  display: grid;
  gap: .3rem;
  padding: 1.1rem 1.15rem;
  background: var(--paper);
}

.page-faq .faq-metrics__num {
  font-family: var(--font-mono);
  font-size: var(--step-4);
  letter-spacing: .04em;
  color: var(--deep-sea);
}

.page-faq .faq-metrics__label {
  font-size: var(--step-1);
  line-height: 1.55;
  color: var(--slate);
}

.page-faq .faq-prose p {
  margin: 0 0 1rem;
  max-width: 68ch;
  font-size: var(--step-2);
  line-height: 1.85;
  color: var(--faq-body-ink);
}

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

/* ---------- 折叠问答 ---------- */

.page-faq .faq-accordion {
  display: grid;
  gap: .6rem;
}

.page-faq .faq-accordion .accordion__item {
  background: var(--paper);
  border: 1px solid var(--faq-hair-ink);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .faq-accordion .accordion__item[open] {
  border-color: rgba(43, 227, 218, .6);
  box-shadow: 0 0 0 3px rgba(43, 227, 218, .12);
}

.page-faq .faq-accordion .accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

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

.page-faq .faq-accordion .accordion__trigger::after {
  content: "";
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  margin-top: -5px;
  border-right: 2px solid var(--cyan-ink);
  border-bottom: 2px solid var(--cyan-ink);
  transform: rotate(45deg);
  transition: transform .22s var(--ease), margin-top .22s var(--ease);
}

.page-faq .faq-accordion .accordion__item[open] .accordion__trigger::after {
  margin-top: 3px;
  transform: rotate(225deg);
}

.page-faq .faq-accordion .accordion__trigger:hover {
  color: var(--cyan-ink);
}

.page-faq .faq-accordion .accordion__panel {
  padding: 0 1.15rem 1.15rem;
  animation: faq-panel-in .22s var(--ease) both;
}

.page-faq .faq-accordion .accordion__panel p {
  margin: 0;
  max-width: 62ch;
  font-size: var(--step-2);
  line-height: 1.82;
  color: var(--faq-body-ink);
}

@keyframes faq-panel-in {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 人工协助色带 ---------- */

.page-faq .faq-help {
  padding-block: clamp(2.5rem, 6vw, 4.25rem);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(255, 180, 60, .22), transparent 58%),
    linear-gradient(150deg, var(--claret), var(--deep-sea) 72%);
  color: var(--text-inverse);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

@media (min-width: 900px) {
  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: start;
    column-gap: clamp(2.5rem, 5vw, 4.5rem);
  }
}

.page-faq .faq-help__eyebrow {
  margin: 0 0 .8rem;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--amber-gold);
}

.page-faq .faq-help__title {
  margin: 0 0 .9rem;
  max-width: 20ch;
  font-family: var(--font-display);
  font-size: var(--step-5);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -.015em;
  color: var(--text-inverse);
}

.page-faq .faq-help__text {
  margin: 0 0 var(--space-3);
  max-width: 48ch;
  font-size: var(--step-2);
  line-height: 1.82;
  color: rgba(242, 245, 248, .84);
}

.page-faq .faq-help__list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: .2rem;
}

.page-faq .faq-help__row {
  display: grid;
  gap: .25rem;
  padding: .95rem 0;
  border-bottom: 1px solid var(--faq-hair);
}

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

.page-faq .faq-help__row dt {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .1em;
  color: var(--amber-gold);
}

.page-faq .faq-help__row dd {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.72;
  color: var(--paper);
  overflow-wrap: anywhere;
}

/* ---------- 动效偏好 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc .toc__link,
  .page-faq .faq-accordion .accordion__item,
  .page-faq .faq-accordion .accordion__trigger::after {
    transition: none;
  }

  .page-faq .faq-accordion .accordion__panel {
    animation: none;
  }
}