.page-faq {
  --faq-rail: 230px;
  --faq-num-w: 34px;
  --faq-gap: 12px;
  --faq-line: 1px solid var(--c-slate);
  background: var(--c-snow);
  color: var(--c-rock);
}

@media (min-width: 640px) {
  .page-faq {
    --faq-num-w: 48px;
    --faq-gap: 16px;
  }
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--c-indigo);
  color: var(--c-snow);
  padding: clamp(22px, 3.6vw, 38px) 0 clamp(84px, 13vw, 148px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -25%;
  right: -14%;
  width: 52%;
  height: 165%;
  background: var(--c-night);
  opacity: .62;
  transform: rotate(-8deg);
  transform-origin: center;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: clamp(40px, 7vw, 84px);
  background: var(--c-snow);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  pointer-events: none;
}

.page-faq .faq-hero .shell {
  position: relative;
  z-index: 2;
}

.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 10px;
  margin: 0 0 clamp(26px, 4.5vw, 46px);
  padding: 0;
  list-style: none;
  font-size: var(--fs-1);
  letter-spacing: .12em;
}

.page-faq .breadcrumb__item {
  color: rgba(244, 241, 234, .58);
}

.page-faq .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 10px;
  color: var(--c-copper);
}

.page-faq .breadcrumb__link {
  color: rgba(244, 241, 234, .72);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .breadcrumb__link:hover,
.page-faq .breadcrumb__link:focus-visible {
  color: var(--c-lungta-white);
  border-bottom-color: var(--c-copper);
}

.page-faq .faq-hero .eyebrow {
  position: relative;
  display: inline-block;
  margin: 0 0 clamp(16px, 2.6vw, 26px);
  padding-left: 18px;
  font-size: var(--fs-1);
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--c-copper);
}

.page-faq .faq-hero .eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: .35em;
  width: 8px;
  height: 8px;
  background: var(--c-copper);
}

.page-faq .faq-hero h1 {
  margin: 0 0 clamp(20px, 3.2vw, 32px);
  max-width: 20em;
  font-size: clamp(2rem, 5.4vw, 3.9rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--c-lungta-white);
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 44em;
  font-size: var(--fs-3);
  line-height: 1.85;
  color: rgba(244, 241, 234, .8);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  background: var(--c-snow);
  padding: clamp(34px, 6vw, 76px) 0 clamp(44px, 7vw, 88px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 40px);
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 76px);
  }
}

.page-faq .faq-side {
  border-top: 2px solid var(--c-copper);
  padding-top: 14px;
  min-width: 0;
}

@media (min-width: 900px) {
  .page-faq .faq-side {
    position: sticky;
    top: 104px;
    align-self: start;
  }
}

.page-faq .faq-side__title {
  margin: 0 0 14px;
  font-size: var(--fs-1);
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--c-copper);
}

.page-faq .faq-filter {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

@media (min-width: 900px) {
  .page-faq .faq-filter {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }
}

.page-faq .faq-filter .filter-btn {
  flex: 0 0 auto;
  margin: 0;
  padding: 9px 12px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  font-family: inherit;
  font-size: var(--fs-2);
  font-weight: 500;
  color: rgba(51, 56, 61, .74);
  text-align: left;
  white-space: nowrap;
  cursor: pointer;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-filter .filter-btn:hover {
  color: var(--c-indigo);
  background: rgba(176, 138, 79, .12);
}

.page-faq .faq-filter .filter-btn[aria-pressed="true"] {
  border-bottom-color: var(--c-copper);
  background: rgba(176, 138, 79, .16);
  color: var(--c-indigo);
  font-weight: 700;
}

@media (min-width: 900px) {
  .page-faq .faq-filter .filter-btn {
    border-bottom: 0;
    border-left: 2px solid transparent;
  }

  .page-faq .faq-filter .filter-btn[aria-pressed="true"] {
    border-bottom-color: transparent;
    border-left-color: var(--c-copper);
  }
}

.page-faq .faq-side__count {
  margin: 18px 0 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-2);
  font-variant-numeric: tabular-nums;
  color: var(--c-rock);
}

.page-faq .faq-side__hint {
  margin: 0;
  font-size: var(--fs-2);
  line-height: 1.75;
  color: rgba(51, 56, 61, .68);
}

.page-faq .faq-side__hint a {
  color: var(--c-clay);
  text-decoration: none;
  border-bottom: 1px solid var(--c-clay);
  transition: color .18s var(--ease);
}

.page-faq .faq-side__hint a:hover {
  color: var(--c-indigo);
  border-bottom-color: var(--c-indigo);
}

/* ---------- 问答长卷 ---------- */
.page-faq .faq-list {
  min-width: 0;
  border-top: var(--faq-line);
}

.page-faq .faq-item {
  border-bottom: var(--faq-line);
  scroll-margin-top: 120px;
}

.page-faq .faq-item[hidden],
.page-faq .faq-item.is-hidden {
  display: none;
}

.page-faq .faq-q {
  position: relative;
  display: grid;
  grid-template-columns: var(--faq-num-w) minmax(0, 1fr) 18px;
  gap: 0 var(--faq-gap);
  align-items: start;
  padding: clamp(18px, 2.6vw, 28px) 0;
  cursor: pointer;
  list-style: none;
  transition: background-color .18s var(--ease);
}

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

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

.page-faq .faq-q:hover {
  background: rgba(216, 212, 203, .32);
}

.page-faq .faq-num {
  padding-top: .42em;
  font-family: var(--font-mono);
  font-size: var(--fs-2);
  font-variant-numeric: tabular-nums;
  color: var(--c-copper);
  text-align: right;
}

.page-faq .faq-text {
  min-width: 0;
  font-size: clamp(1.0625rem, 2.4vw, 1.375rem);
  font-weight: 800;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--c-indigo);
  transition: color .18s var(--ease);
}

.page-faq .faq-item[open] .faq-text {
  color: var(--c-clay);
}

.page-faq .faq-mark {
  position: relative;
  justify-self: end;
  width: 14px;
  height: 14px;
  margin-top: .48em;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: var(--c-copper);
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}

.page-faq .faq-mark::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 2px;
}

.page-faq .faq-mark::after {
  top: 0;
  left: 6px;
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-a {
  padding-right: 18px;
  padding-bottom: clamp(20px, 3vw, 34px);
}

@media (min-width: 640px) {
  .page-faq .faq-a {
    padding-left: calc(var(--faq-num-w) + var(--faq-gap));
  }
}

.page-faq .faq-a p {
  margin: 0 0 .85em;
  max-width: 44em;
  font-size: var(--fs-3);
  line-height: 1.85;
  color: rgba(51, 56, 61, .86);
}

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

.page-faq .faq-a .faq-a__lead {
  margin-bottom: .7em;
  font-size: clamp(1.0625rem, 1.9vw, 1.25rem);
  font-weight: 800;
  line-height: 1.6;
  letter-spacing: -0.01em;
  color: var(--c-indigo);
}

.page-faq .faq-item .faq-a {
  animation: faq-open .24s var(--ease);
}

@keyframes faq-open {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-figure {
  margin: clamp(16px, 3vw, 26px) 0 0;
  max-width: 640px;
  border: var(--faq-line);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-faq .faq-figure .img-frame__caption {
  padding: 10px 14px;
  font-size: var(--fs-1);
  line-height: 1.6;
  color: rgba(51, 56, 61, .72);
  border-top: var(--faq-line);
  background: rgba(216, 212, 203, .34);
}

/* ---------- 服务申请流程 ---------- */
.page-faq .faq-flow {
  background: var(--c-slate);
  padding: clamp(40px, 6.5vw, 84px) 0 clamp(44px, 7vw, 88px);
}

.page-faq .faq-flow .eyebrow {
  margin: 0 0 14px;
  font-size: var(--fs-1);
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--c-clay);
}

.page-faq .faq-flow .section-title {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  max-width: 22em;
  font-size: var(--fs-section);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--c-indigo);
}

.page-faq .faq-flow__intro {
  margin: 0 0 clamp(28px, 4.5vw, 48px);
  max-width: 44em;
  font-size: var(--fs-3);
  line-height: 1.85;
  color: rgba(51, 56, 61, .84);
}

.page-faq .flow-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(51, 56, 61, .28);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 760px) {
  .page-faq .flow-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(28px, 4vw, 56px);
  }
}

@media (min-width: 1100px) {
  .page-faq .flow-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-faq .flow-step {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 0 14px;
  padding: clamp(20px, 3vw, 30px) 0;
  border-bottom: 1px solid rgba(51, 56, 61, .28);
}

.page-faq .flow-step__num {
  padding-top: .28em;
  font-family: var(--font-mono);
  font-size: var(--fs-4);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  color: var(--c-clay);
}

.page-faq .flow-step__body h3 {
  margin: 0 0 8px;
  font-size: var(--fs-4);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--c-indigo);
}

.page-faq .flow-step__body p {
  margin: 0;
  font-size: var(--fs-2);
  line-height: 1.8;
  color: rgba(51, 56, 61, .82);
}

.page-faq .flow-prep {
  margin-top: clamp(28px, 4.5vw, 48px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 2px solid var(--c-moss);
}

.page-faq .flow-prep__title {
  margin: 0 0 16px;
  font-size: var(--fs-4);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--c-indigo);
}

.page-faq .flow-prep__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px 32px;
}

@media (min-width: 760px) {
  .page-faq .flow-prep__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-faq .flow-prep__list li {
  position: relative;
  padding-left: 20px;
  font-size: var(--fs-3);
  line-height: 1.7;
  color: var(--c-rock);
}

.page-faq .flow-prep__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 8px;
  background: var(--c-moss);
}

/* ---------- 底部索引 ---------- */
.page-faq .faq-foot {
  background: var(--c-night);
  color: var(--c-snow);
  padding: clamp(34px, 5.5vw, 64px) 0;
}

.page-faq .faq-foot__label {
  margin: 0 0 clamp(16px, 2.6vw, 26px);
  font-size: var(--fs-1);
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--c-copper);
}

.page-faq .faq-foot__rows {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid rgba(244, 241, 234, .2);
}

.page-faq .faq-foot__row {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 6px 18px;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid rgba(244, 241, 234, .2);
}

@media (min-width: 860px) {
  .page-faq .faq-foot__row {
    grid-template-columns: 62px minmax(0, 1fr) auto;
    align-items: center;
  }
}

.page-faq .faq-foot__key {
  font-family: var(--font-mono);
  font-size: var(--fs-2);
  letter-spacing: .14em;
  color: var(--c-copper);
}

.page-faq .faq-foot__val {
  font-size: var(--fs-3);
  font-weight: 700;
  line-height: 1.6;
  color: var(--c-lungta-white);
}

.page-faq .faq-foot__link {
  justify-self: start;
  font-size: var(--fs-2);
  color: rgba(244, 241, 234, .82);
  text-decoration: none;
  border-bottom: 1px solid var(--c-copper);
  padding-bottom: 2px;
  transition: color .18s var(--ease);
}

.page-faq .faq-foot__link:hover,
.page-faq .faq-foot__link:focus-visible {
  color: var(--c-lungta-white);
}

/* ---------- 动效收敛 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item .faq-a {
    animation: none;
  }

  .page-faq .faq-q,
  .page-faq .faq-text,
  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after,
  .page-faq .faq-filter .filter-btn,
  .page-faq .faq-foot__link,
  .page-faq .breadcrumb__link {
    transition: none;
  }
}