.page-faq {
  --faq-accent: var(--c-cyan);
  display: block;
  background: var(--c-base);
  color: var(--c-text);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-faq #group-nav,
.page-faq #handoff {
  scroll-margin-top: 96px;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  padding: 20px 0 4px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 24px 0 52px;
  overflow: hidden;
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -170px;
  right: -130px;
  width: min(720px, 92vw);
  height: 520px;
  background:
    radial-gradient(circle at 35% 35%, rgba(22, 224, 210, .22), transparent 62%),
    radial-gradient(circle at 72% 62%, rgba(255, 61, 166, .18), transparent 60%);
  filter: blur(10px);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(18, 32, 74, .7) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 32, 74, .7) 1px, transparent 1px);
  background-size: 58px 58px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .9), transparent 78%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .9), transparent 78%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.page-faq .faq-hero__index {
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.page-faq .faq-hero__title {
  margin: 0 0 20px;
  font-size: clamp(32px, 6.2vw, 62px);
  font-weight: 300;
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--c-text);
}

.page-faq .faq-hero__title strong {
  font-weight: 900;
  color: var(--c-cyan);
  text-shadow: var(--glow-cyan);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-muted);
}

.page-faq .faq-hero__jumps {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--c-line);
  background: rgba(11, 20, 48, .6);
  color: var(--c-text);
  font-size: 14px;
  text-decoration: none;
  transition: border-color .18s var(--ease), color .18s var(--ease), transform .18s var(--ease);
}

.page-faq .faq-jump::before {
  content: "→";
  font-family: var(--font-mono);
  color: var(--c-cyan);
}

.page-faq .faq-jump:hover,
.page-faq .faq-jump:focus-visible {
  border-color: var(--c-cyan);
  color: var(--c-cyan);
  transform: translateX(3px);
}

/* ---------- 章节头 ---------- */
.page-faq .section__head {
  margin-bottom: 28px;
}

.page-faq .section__lead {
  max-width: 62ch;
}

/* ---------- 分组区 ---------- */
.page-faq .faq-groups {
  padding-bottom: 12px;
}

.page-faq .faq-groups__figure {
  margin: 0 0 40px;
}

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

.page-faq .faq-tabs__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.page-faq .faq-tab {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num label"
    "num count";
  gap: 3px 12px;
  align-items: center;
  width: 100%;
  padding: 13px 14px;
  background: rgba(11, 20, 48, .55);
  border: 1px solid var(--c-line);
  border-left: 2px solid var(--c-line);
  color: var(--c-muted);
  font-family: var(--font-sans);
  font-size: 15px;
  text-align: left;
  cursor: pointer;
  transition: border-color .18s var(--ease), background-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .faq-tab__num {
  grid-area: num;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--c-muted);
}

.page-faq .faq-tab__label {
  grid-area: label;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--c-text);
  overflow-wrap: anywhere;
}

.page-faq .faq-tab__count {
  grid-area: count;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--c-muted);
}

.page-faq .faq-tab:hover {
  border-color: rgba(22, 224, 210, .5);
}

.page-faq .faq-tab[data-tab="checklist"][aria-selected="true"] {
  border-left-color: var(--c-cyan);
  background: rgba(22, 224, 210, .09);
  box-shadow: inset 0 0 0 1px rgba(22, 224, 210, .22);
}

.page-faq .faq-tab[data-tab="records"][aria-selected="true"] {
  border-left-color: var(--c-magenta);
  background: rgba(255, 61, 166, .09);
  box-shadow: inset 0 0 0 1px rgba(255, 61, 166, .22);
}

.page-faq .faq-tab[data-tab="revisit"][aria-selected="true"] {
  border-left-color: var(--c-purple);
  background: rgba(108, 123, 255, .11);
  box-shadow: inset 0 0 0 1px rgba(108, 123, 255, .24);
}

.page-faq .faq-tab[data-tab="docs"][aria-selected="true"] {
  border-left-color: var(--c-amber);
  background: rgba(255, 176, 32, .09);
  box-shadow: inset 0 0 0 1px rgba(255, 176, 32, .24);
}

.page-faq .faq-tab[aria-selected="true"] .faq-tab__num {
  color: var(--faq-accent);
}

/* ---------- 面板 ---------- */
.page-faq .faq-panel {
  position: relative;
  padding: 24px 18px 12px;
  background: var(--c-layer);
  border: 1px solid var(--c-line);
}

.page-faq .faq-panel[hidden] {
  display: none;
}

.page-faq .faq-panel[data-panel="checklist"] { --faq-accent: var(--c-cyan); }
.page-faq .faq-panel[data-panel="records"]   { --faq-accent: var(--c-magenta); }
.page-faq .faq-panel[data-panel="revisit"]   { --faq-accent: var(--c-purple); }
.page-faq .faq-panel[data-panel="docs"]      { --faq-accent: var(--c-amber); }

.page-faq .faq-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--faq-accent), transparent 74%);
}

.page-faq .faq-panel__title {
  margin: 0 0 8px;
  font-size: 21px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--c-text);
}

.page-faq .faq-panel__intro {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-faq .faq-panel__figure {
  margin: 0 0 20px;
  max-width: 320px;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 0;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-text);
  transition: color .18s var(--ease);
}

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

.page-faq .faq-item__num {
  flex: none;
  padding-top: 3px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--faq-accent);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__mark {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 6px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--faq-accent);
  transition: transform .18s var(--ease), opacity .18s var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

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

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--faq-accent);
}

.page-faq .faq-item__a {
  padding: 2px 0 20px 28px;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-muted);
}

/* ---------- 编号步骤 ---------- */
.page-faq .faq-steps {
  counter-reset: faqstep;
  list-style: none;
  margin: 0 0 14px;
  padding: 0 0 0 34px;
  border-left: 1px solid var(--c-line);
}

.page-faq .faq-steps > li {
  counter-increment: faqstep;
  position: relative;
  padding: 9px 0;
  border-bottom: 1px solid rgba(18, 32, 74, .7);
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text);
}

.page-faq .faq-steps > li:last-child {
  border-bottom: 0;
}

.page-faq .faq-steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: -30px;
  top: 11px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--faq-accent);
}

/* ---------- 转人工 ---------- */
.page-faq .faq-handoff {
  padding-top: 20px;
}

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

.page-faq .faq-handoff__block {
  padding: 22px 20px;
  background: rgba(11, 20, 48, .62);
  border: 1px solid var(--c-line);
}

.page-faq .faq-handoff__title {
  margin: 0 0 16px;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--c-text);
}

.page-faq .faq-cases {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-cases > li {
  margin-bottom: 12px;
  padding: 12px 14px 12px 18px;
  border-left: 2px solid var(--c-magenta);
  background: linear-gradient(90deg, rgba(255, 61, 166, .09), transparent 72%);
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text);
}

.page-faq .faq-cases > li:last-child {
  margin-bottom: 0;
}

.page-faq .faq-handoff__side {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-faq .faq-prep {
  counter-reset: prep;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-prep > li {
  counter-increment: prep;
  position: relative;
  padding: 9px 0 9px 30px;
  border-bottom: 1px solid var(--c-line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-muted);
}

.page-faq .faq-prep > li:last-child {
  border-bottom: 0;
}

.page-faq .faq-prep > li::before {
  content: counter(prep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 11px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--c-amber);
}

.page-faq .faq-handoff__block--contact {
  border-top: 2px solid var(--c-amber);
}

.page-faq .faq-contact {
  margin: 0 0 14px;
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-contact__row:last-child {
  border-bottom: 0;
}

.page-faq .faq-contact__label {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--c-muted);
}

.page-faq .faq-contact__value {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-text);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__value.mono {
  color: var(--c-amber);
}

.page-faq .faq-contact__note {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-faq .faq-contact__link {
  margin: 0;
  font-size: 14px;
}

.page-faq .faq-contact__link a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(22, 224, 210, .45);
}

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

/* ---------- 相关入口 ---------- */
.page-faq .faq-next {
  padding-top: 24px;
}

.page-faq .faq-next__grid {
  display: grid;
  gap: 14px;
}

.page-faq .faq-next__card {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 20px 44px 20px 20px;
  border: 1px solid var(--c-line);
  background: rgba(11, 20, 48, .45);
  color: var(--c-text);
  text-decoration: none;
  transition: border-color .18s var(--ease), transform .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-next__card:hover,
.page-faq .faq-next__card:focus-visible {
  border-color: var(--c-cyan);
  background: rgba(22, 224, 210, .06);
  transform: translateY(-3px);
}

.page-faq .faq-next__tag {
  justify-self: start;
}

.page-faq .faq-next__name {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .02em;
}

.page-faq .faq-next__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-faq .faq-next__arrow {
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 16px;
  color: var(--c-muted);
  transition: color .18s var(--ease), transform .18s var(--ease);
}

.page-faq .faq-next__card:hover .faq-next__arrow,
.page-faq .faq-next__card:focus-visible .faq-next__arrow {
  color: var(--c-cyan);
  transform: translateY(-50%) translateX(4px);
}

/* ---------- 回到分组 ---------- */
.page-faq .faq-return {
  position: sticky;
  bottom: 18px;
  z-index: 4;
  display: flex;
  justify-content: center;
  padding: 32px 0 10px;
  pointer-events: none;
}

.page-faq .faq-return__link {
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid var(--c-cyan);
  background: rgba(5, 10, 26, .94);
  box-shadow: var(--glow-cyan);
  color: var(--c-cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  text-decoration: none;
  transition: background-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .faq-return__link:hover,
.page-faq .faq-return__link:focus-visible {
  background: rgba(22, 224, 210, .14);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 32px 0 64px;
  }

  .page-faq .faq-panel {
    padding: 30px 28px 16px;
  }

  .page-faq .faq-item__a {
    padding-left: 40px;
  }

  .page-faq .faq-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-handoff__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-tabs {
    grid-template-columns: 264px minmax(0, 1fr);
    column-gap: 40px;
    align-items: start;
  }

  .page-faq .faq-tabs__list {
    grid-column: 1;
    grid-row: 1;
    grid-template-columns: minmax(0, 1fr);
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-panel {
    grid-column: 2;
    padding: 32px 36px 18px;
  }

  .page-faq .faq-handoff__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 24px;
  }

  .page-faq .faq-next__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump,
  .page-faq .faq-item__q,
  .page-faq .faq-next__card,
  .page-faq .faq-next__arrow,
  .page-faq .faq-return__link,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after {
    transition-duration: .12s;
  }

  .page-faq .faq-jump:hover,
  .page-faq .faq-next__card:hover,
  .page-faq .faq-next__card:focus-visible {
    transform: none;
  }
}