.page-faq {
  background: var(--snow);
  color: var(--ink-900);
  font-family: var(--font-body);
}

.page-faq .is-hidden {
  display: none;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-900);
  color: var(--snow);
  padding: clamp(26px, 4vw, 44px) 0 clamp(34px, 5vw, 60px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(247, 246, 242, .05) 1px, transparent 1px);
  background-size: 6px 6px;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .jd-breadcrumb {
  margin-bottom: 18px;
}

.page-faq .faq-hero__index {
  margin: 0 0 clamp(18px, 3vw, 34px);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--dust-200);
  opacity: .78;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 20px;
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(40px, 7vw, 96px);
  line-height: 1.02;
  letter-spacing: -.02em;
}

.page-faq .faq-hero__lead {
  margin: 0;
  color: var(--dust-200);
  max-width: 44ch;
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 40px;
  }

  .page-faq .faq-hero__lead {
    padding-bottom: 10px;
  }
}

/* ---------- 三步速查条 ---------- */

.page-faq .faq-steps {
  display: grid;
  gap: 14px;
  margin-top: clamp(30px, 4.4vw, 52px);
}

.page-faq .faq-step {
  border: 1px solid rgba(247, 246, 242, .22);
  background: rgba(247, 246, 242, .05);
  padding: 18px 18px 20px;
}

.page-faq .faq-step__num {
  display: block;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--clay);
  margin-bottom: 8px;
}

.page-faq .faq-step__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -.01em;
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--dust-200);
}

.page-faq .faq-arrow {
  display: none;
}

@media (min-width: 880px) {
  .page-faq .faq-steps {
    grid-template-columns: minmax(0, 1fr) 44px minmax(0, 1fr) 44px minmax(0, 1fr);
    align-items: center;
  }

  .page-faq .faq-arrow {
    display: block;
    width: 100%;
    height: auto;
    color: rgba(247, 246, 242, .45);
  }
}

/* ---------- 主体双栏 ---------- */

.page-faq .faq-body {
  display: grid;
  gap: 28px;
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 110px;
  }
}

.page-faq .faq-rail__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: .02em;
  color: var(--ink-700);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ink-900);
}

.page-faq .faq-toc {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
}

.page-faq .faq-toc__link {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 10px 12px 10px 10px;
  border-left: 2px solid var(--dust-200);
  color: var(--ink-700);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.55;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  border-left-color: var(--clay);
  background: var(--paper);
}

.page-faq .faq-toc__num {
  font-size: 12px;
  color: var(--clay);
}

.page-faq .faq-rail__check {
  border: 1px solid var(--dust-200);
  background: var(--paper);
  padding: 16px;
}

.page-faq .faq-rail__check-title {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-900);
}

.page-faq .faq-rail__count {
  margin: 12px 0 0;
  color: var(--ink-700);
  font-size: 12px;
}

/* ---------- 过滤条 ---------- */

.page-faq .faq-tools {
  border-top: 2px solid var(--ink-900);
  border-bottom: 1px solid var(--dust-200);
  padding: 14px 0;
  margin-bottom: 6px;
}

.page-faq .jd-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .jd-filter__btn {
  border: 1px solid var(--dust-200);
  background: var(--snow);
  color: var(--ink-700);
  font-family: var(--font-body);
  font-size: 13px;
  padding: 7px 12px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color .18s var(--ease), color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .jd-filter__btn:hover {
  border-color: var(--clay);
  color: var(--clay-deep);
}

.page-faq .jd-filter__btn.is-active {
  border-color: var(--pom);
  color: var(--pom);
  box-shadow: inset 3px 0 0 var(--pom);
}

.page-faq .jd-filter__btn:disabled {
  color: var(--dust-400);
  border-color: var(--dust-200);
  cursor: not-allowed;
}

.page-faq .jd-filter__count {
  font-family: var(--font-mono);
  font-size: 11px;
  margin-left: 4px;
  opacity: .75;
}

/* ---------- 章节 ---------- */

.page-faq .faq-chapter {
  padding: clamp(26px, 3.4vw, 46px) 0 clamp(20px, 3vw, 34px);
  border-top: 2px solid var(--ink-900);
  scroll-margin-top: 110px;
  transition: box-shadow .2s var(--ease);
}

.page-faq .faq-chapter:target {
  box-shadow: inset 3px 0 0 var(--pom);
  padding-left: 14px;
}

.page-faq .faq-chapter__head {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  margin-bottom: 14px;
}

.page-faq .faq-chapter__head .jd-h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-faq .jd-seq {
  font-size: 13px;
  color: var(--clay);
  letter-spacing: .06em;
}

.page-faq .faq-chapter__lead {
  margin: 0 0 20px;
  max-width: 46ch;
}

.page-faq .faq-chapter a {
  color: var(--clay-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-chapter a:hover {
  color: var(--pom);
}

.page-faq .faq-chapter--paper {
  background: var(--paper);
  border-top-color: var(--paper);
  padding-left: clamp(16px, 2.4vw, 28px);
  padding-right: clamp(16px, 2.4vw, 28px);
  box-shadow: var(--stack);
}

.page-faq .faq-chapter--oasis {
  background: var(--oasis-900);
  color: var(--snow);
  border-top-color: var(--oasis-900);
  padding-left: clamp(16px, 2.4vw, 28px);
  padding-right: clamp(16px, 2.4vw, 28px);
  box-shadow: var(--stack-hard);
}

.page-faq .faq-chapter--oasis .jd-text,
.page-faq .faq-chapter--oasis .faq-chapter__lead,
.page-faq .faq-chapter--oasis .faq-item__q,
.page-faq .faq-chapter--oasis .faq-item__body p {
  color: var(--snow);
}

.page-faq .faq-chapter--oasis .jd-seq {
  color: var(--clay);
}

.page-faq .faq-chapter--oasis a {
  color: var(--paper);
}

.page-faq .faq-chapter--ink {
  background: var(--ink-900);
  color: var(--snow);
  border-top-color: var(--ink-900);
  padding-left: clamp(16px, 2.4vw, 28px);
  padding-right: clamp(16px, 2.4vw, 28px);
  box-shadow: var(--stack-hard);
}

.page-faq .faq-chapter--ink .jd-text,
.page-faq .faq-chapter--ink .faq-chapter__lead {
  color: var(--dust-200);
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-item {
  border-top: 1px solid var(--dust-200);
  transition: box-shadow .2s var(--ease);
}

.page-faq .faq-chapter--oasis .faq-item,
.page-faq .faq-chapter--ink .faq-item {
  border-top-color: rgba(247, 246, 242, .22);
}

.page-faq .faq-item[open] {
  box-shadow: inset 3px 0 0 var(--pom);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) 20px;
  gap: 12px;
  align-items: start;
  padding: 18px 6px 18px 10px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.5;
  color: inherit;
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item__num {
  font-size: 13px;
  color: var(--clay);
  letter-spacing: .04em;
  padding-top: 4px;
}

.page-faq .faq-item__icon {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 6px;
  justify-self: end;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--clay);
}

.page-faq .faq-item__icon::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 1.5px;
}

.page-faq .faq-item__icon::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 1.5px;
  transition: transform .18s var(--ease);
}

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

.page-faq .faq-item__body {
  padding: 0 6px 22px 70px;
}

.page-faq .faq-item__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-faq .faq-item[open] .faq-item__body {
  animation: faq-body-in .32s var(--ease) both;
}

@keyframes faq-body-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 620px) {
  .page-faq .faq-item > summary {
    grid-template-columns: 36px minmax(0, 1fr) 18px;
    gap: 8px;
    padding-left: 6px;
  }

  .page-faq .faq-item__body {
    padding: 0 4px 20px 44px;
  }
}

/* ---------- 图片 ---------- */

.page-faq .faq-figure {
  margin: 0 0 22px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--dust-200);
  box-shadow: var(--stack-hard);
}

.page-faq .faq-chapter--oasis .faq-figure img,
.page-faq .faq-chapter--ink .faq-figure img {
  border-color: rgba(247, 246, 242, .28);
}

.page-faq .faq-figure__cap {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--dust-400);
}

.page-faq .faq-chapter--oasis .faq-figure__cap,
.page-faq .faq-chapter--ink .faq-figure__cap {
  color: rgba(247, 246, 242, .6);
}

.page-faq .faq-split {
  display: grid;
  gap: 22px;
}

@media (min-width: 760px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 32px;
    align-items: start;
  }

  .page-faq .faq-figure--side {
    margin-bottom: 0;
  }
}

/* ---------- 联系兜底 ---------- */

.page-faq .faq-channels {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
}

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

.page-faq .faq-channel {
  border: 1px solid rgba(247, 246, 242, .26);
  padding: 18px;
  background: rgba(247, 246, 242, .04);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-channel__num {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--clay);
}

.page-faq .faq-channel__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  color: var(--snow);
}

.page-faq .faq-channel__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--dust-200);
  flex: 1;
}

.page-faq .faq-channel__strong {
  margin: 0;
  font-size: 15px;
  letter-spacing: .02em;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-channel .jd-btn {
  align-self: flex-start;
}

.page-faq .faq-note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed rgba(247, 246, 242, .3);
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper);
}

/* ---------- 空态 ---------- */

.page-faq .jd-filter-empty {
  margin: 28px 0 0;
  padding: 28px 20px;
  border: 1px dashed var(--dust-400);
  background: var(--paper);
  color: var(--ink-700);
  font-size: 14px;
  text-align: center;
}

/* ---------- 动效收敛 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__body {
    animation: none;
  }

  .page-faq .faq-item__icon::after,
  .page-faq .faq-toc__link,
  .page-faq .jd-filter__btn,
  .page-faq .faq-item {
    transition: none;
  }
}
</main>