.page-faq {
  --faq-edge: rgba(198, 208, 214, 0.85);
  --faq-card: #FFFFFF;
  --faq-lead: 17px;
  --faq-side: 250px;
  color: var(--ink);
  background: var(--mist);
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  font-family: var(--f-display);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding-top: 26px;
  padding-bottom: 68px;
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(191, 224, 234, 0.42) 0%, rgba(246, 248, 247, 0) 62%),
    var(--mist);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 34px;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
  align-items: start;
}

.page-faq .faq-hero__lead .eyebrow {
  font-family: var(--f-serif);
  letter-spacing: 0.06em;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 20px;
  font-weight: 800;
  font-size: clamp(29px, 4.4vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--lake-deep);
  max-width: 18ch;
}

.page-faq .faq-hero__lead .lede {
  margin: 0;
  max-width: 46ch;
  font-size: var(--faq-lead);
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  margin-top: 30px;
}

.page-faq .faq-hero__aside {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* 刻度尺 */
.page-faq .faq-ruler {
  position: relative;
  height: 20px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-ruler::before {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 9px;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 9px);
  opacity: 0.85;
}

.page-faq .faq-ruler::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 62px;
  height: 100%;
  border-bottom: 2px solid var(--orange);
}

.page-faq .faq-hero__figure {
  margin: 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--paper);
}

.page-faq .faq-hero__figure .media__caption {
  margin-top: 10px;
  font-family: var(--f-serif);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-faint);
}

/* ---------- 主体布局 ---------- */

.page-faq .faq-body {
  padding-top: 56px;
  padding-bottom: 88px;
  background: var(--mist);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: start;
}

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

.page-faq .faq-toc {
  border-top: 2px solid var(--lake-deep);
  padding-top: 16px;
}

.page-faq .faq-toc .toc__title {
  font-family: var(--f-serif);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--sea-soft);
  margin: 0 0 12px;
}

.page-faq .faq-toc .toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-toc .toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink-soft);
  text-decoration: none;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-faq .faq-toc .toc__link:hover {
  background: rgba(191, 224, 234, 0.4);
  color: var(--lake-deep);
}

.page-faq .faq-toc .toc__link.is-current {
  background: var(--glow);
  border-left-color: var(--orange);
  color: var(--lake-deep);
  font-weight: 700;
}

.page-faq .faq-toc__num {
  flex: none;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
}

.page-faq .faq-toc .toc__link.is-current .faq-toc__num {
  color: var(--orange-deep);
}

/* ---------- 问答主体 ---------- */

.page-faq .faq-main {
  display: flex;
  flex-direction: column;
  gap: 74px;
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 96px;
  min-width: 0;
}

.page-faq #group-entry { --group-accent: var(--lake-deep); }
.page-faq #group-member { --group-accent: var(--orange); }
.page-faq #group-v4 { --group-accent: var(--jade); }
.page-faq #group-speed { --group-accent: var(--lake); }
.page-faq #group-choose { --group-accent: var(--orange-deep); }
.page-faq #group-help { --group-accent: var(--ink); }

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  column-gap: 16px;
  border-top: 2px solid var(--group-accent, var(--lake-deep));
  padding-top: 16px;
  margin-bottom: 26px;
}

.page-faq .faq-group__num {
  margin: 0;
  padding-top: 5px;
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--group-accent, var(--lake-deep));
}

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

.page-faq .faq-group__title {
  margin: 0;
  font-weight: 700;
  font-size: clamp(20px, 2.5vw, 29px);
  line-height: 1.32;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.page-faq .faq-group__desc {
  margin: 10px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---- 折叠问答卡 ---- */

.page-faq .faq-acc .accordion__item {
  position: relative;
  margin-bottom: -1px;
  background: var(--faq-card);
  border: 1px solid var(--faq-edge);
  border-left: 3px solid var(--line);
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-faq .faq-acc .accordion__item:hover {
  border-left-color: var(--lake);
}

.page-faq .faq-acc .accordion__item[data-open],
.page-faq .faq-acc .accordion__item.is-open {
  border-left-color: var(--group-accent, var(--orange));
  background: #FBFCFB;
}

.page-faq .faq-acc .faq-q {
  margin: 0;
  font-weight: inherit;
}

.page-faq .faq-q__btn {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 17px 20px;
  margin: 0;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-family: var(--f-display);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.62;
  color: var(--ink);
  transition: color var(--t-fast) var(--ease);
}

.page-faq .faq-q__btn:hover {
  color: var(--lake-deep);
}

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

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

.page-faq .faq-q__mark {
  position: relative;
  flex: none;
  width: 15px;
  height: 15px;
  margin-top: 5px;
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  background: var(--lake);
  transition: transform var(--t-mid) var(--ease), opacity var(--t-mid) var(--ease), background var(--t-fast) var(--ease);
}

.page-faq .faq-q__mark::before {
  left: 0;
  top: 7px;
  width: 15px;
  height: 1.5px;
}

.page-faq .faq-q__mark::after {
  left: 7px;
  top: 0;
  width: 1.5px;
  height: 15px;
}

.page-faq .accordion__item[data-open] .faq-q__mark::after,
.page-faq .accordion__item.is-open .faq-q__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .accordion__item[data-open] .faq-q__mark::before,
.page-faq .accordion__item.is-open .faq-q__mark::before {
  background: var(--group-accent, var(--orange));
}

.page-faq .faq-acc .accordion__panel {
  display: none;
}

.page-faq .faq-acc .accordion__item[data-open] > .accordion__panel,
.page-faq .faq-acc .accordion__item.is-open > .accordion__panel {
  display: block;
}

.page-faq .faq-acc .accordion__panel-inner {
  max-width: 66ch;
  padding: 0 22px 22px 20px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-faq .faq-acc .accordion__panel-inner p {
  margin: 0;
}

.page-faq .faq-acc .accordion__panel-inner p + p {
  margin-top: 10px;
}

.page-faq .faq-acc .accordion__panel-inner .link-arrow {
  margin-left: 6px;
  white-space: nowrap;
}

/* ---------- 三步流程 ---------- */

.page-faq .faq-flow {
  margin-bottom: 30px;
}

.page-faq .faq-flow__railwrap {
  margin-bottom: 20px;
}

.page-faq .faq-flow__rail {
  display: block;
  width: 100%;
  max-width: 340px;
  height: auto;
}

.page-faq .faq-flow__rail line {
  stroke: var(--line);
}

.page-faq .faq-flow__rail circle:nth-of-type(1) { fill: var(--orange); }
.page-faq .faq-flow__rail circle:nth-of-type(2) { fill: var(--jade); }
.page-faq .faq-flow__rail circle:nth-of-type(3) { fill: var(--lake-deep); }

.page-faq .faq-steps .faq-step {
  position: relative;
  margin-bottom: -1px;
  background: var(--faq-card);
  border: 1px solid var(--faq-edge);
  border-left: 3px solid var(--paper);
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-faq .faq-steps .faq-step:hover {
  border-left-color: var(--orange);
}

.page-faq .faq-steps .faq-step[data-open],
.page-faq .faq-steps .faq-step.is-open {
  border-left-color: var(--orange);
  background: var(--paper);
}

.page-faq .faq-step__h {
  margin: 0;
  font-weight: inherit;
}

.page-faq .faq-step__btn {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 4px;
  width: 100%;
  padding: 18px 20px;
  margin: 0;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-family: var(--f-display);
  transition: background var(--t-fast) var(--ease);
}

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

.page-faq .faq-step__index {
  grid-row: 1 / span 2;
  align-self: start;
  font-family: var(--f-serif);
  font-size: 14px;
  letter-spacing: 0.05em;
  color: var(--orange-deep);
  padding-top: 3px;
}

.page-faq .faq-step__title {
  grid-column: 2;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-step__hint {
  grid-column: 2;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-faint);
}

.page-faq .faq-steps .accordion__panel {
  display: none;
}

.page-faq .faq-steps .faq-step[data-open] > .accordion__panel,
.page-faq .faq-steps .faq-step.is-open > .accordion__panel {
  display: block;
}

.page-faq .faq-steps .accordion__panel-inner {
  max-width: 62ch;
  padding: 0 22px 20px 90px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-faq .faq-steps .accordion__panel-inner p {
  margin: 0;
}

.page-faq .faq-flow__figure {
  margin: 26px 0 0;
}

.page-faq .faq-flow__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--paper);
}

.page-faq .faq-flow__figure .media__caption {
  margin-top: 10px;
  font-family: var(--f-serif);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-faint);
}

/* ---------- V4 结论条 ---------- */

.page-faq .faq-verdict {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-bottom: 26px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-verdict__item {
  padding: 20px 20px 22px;
  background: var(--paper);
}

.page-faq .faq-verdict__tag {
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--jade);
}

.page-faq .faq-verdict__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 分支判断卡 ---------- */

.page-faq .faq-branch {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-faq .faq-branch__card {
  display: flex;
  flex-direction: column;
  padding: 24px 22px 22px;
  background: var(--faq-card);
  border: 1px solid var(--faq-edge);
  border-top: 3px solid var(--lake-deep);
  transition: border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.page-faq .faq-branch__card:nth-child(2) { border-top-color: var(--orange); }
.page-faq .faq-branch__card:nth-child(3) { border-top-color: var(--jade); }

.page-faq .faq-branch__card:hover {
  transform: translateY(-2px);
}

.page-faq .faq-branch__tag {
  margin: 0 0 12px;
  font-family: var(--f-serif);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--sea-soft);
}

.page-faq .faq-branch__title {
  margin: 0 0 12px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .faq-branch__text {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
  flex: 1;
}

.page-faq .faq-branch__card .link-arrow {
  align-self: flex-start;
}

/* ---------- 联系块 ---------- */

.page-faq .faq-contact {
  padding: 26px 24px 28px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
}

.page-faq .faq-contact__lead {
  margin: 0 0 18px;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--ink);
}

.page-faq .faq-contact__lead strong {
  font-family: var(--f-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--lake-deep);
  word-break: break-all;
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-contact__list li {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 12px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  border-top: 1px solid var(--faq-edge);
  padding-top: 12px;
}

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

.page-faq .faq-contact__key {
  font-family: var(--f-serif);
  color: var(--sea-soft);
}

.page-faq .faq-back {
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

/* ---------- 响应式 ---------- */

@media (max-width: 999px) {
  .page-faq .faq-toc {
    position: relative;
  }

  .page-faq .faq-toc .toc__list {
    flex-direction: row;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .page-faq .faq-toc .toc__list > li {
    flex: none;
  }

  .page-faq .faq-toc .toc__link {
    border: 1px solid var(--faq-edge);
    border-left: 2px solid transparent;
    border-radius: var(--r-sm);
    white-space: nowrap;
    padding: 8px 12px;
  }

  .page-faq .faq-toc .toc__link.is-current {
    border-color: var(--glow);
    border-left-color: var(--orange);
  }
}

@media (min-width: 700px) {
  .page-faq .faq-verdict {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-branch {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero {
    padding-top: 34px;
    padding-bottom: 84px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 336px);
    column-gap: 72px;
  }

  .page-faq .faq-hero h1 {
    max-width: 17ch;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-side) minmax(0, 1fr);
    column-gap: 56px;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-body {
    padding-top: 68px;
    padding-bottom: 104px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-group__head {
    grid-template-columns: 54px minmax(0, 1fr);
    column-gap: 20px;
  }

  .page-faq .faq-steps .accordion__panel-inner {
    padding-left: 100px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q__mark::before,
  .page-faq .faq-q__mark::after,
  .page-faq .faq-toc .toc__link,
  .page-faq .faq-acc .accordion__item,
  .page-faq .faq-branch__card {
    transition: none;
  }

  .page-faq .faq-branch__card:hover {
    transform: none;
  }
}