.page-faq {
  --faq-rail: 272px;
  --faq-hair: rgba(62, 92, 75, .55);
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-areas: "stack";
  position: relative;
  border-bottom: var(--rule);
  background: var(--ink);
  overflow: hidden;
}

.page-faq .faq-hero > * {
  grid-area: stack;
}

.page-faq .faq-hero-img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  object-position: center 40%;
  opacity: .48;
  filter: saturate(.7) contrast(1.06);
}

.page-faq .faq-hero-veil {
  background: linear-gradient(180deg, rgba(11, 15, 13, .30) 0%, rgba(11, 15, 13, .86) 66%, var(--ink) 100%);
}

.page-faq .faq-hero-inner {
  align-self: end;
  padding-top: 72px;
  padding-bottom: 28px;
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 16px;
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--stone);
}

.page-faq .breadcrumb a {
  color: var(--stone);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--answer);
}

.page-faq .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .28em;
  color: var(--answer);
}

.page-faq .faq-hero h1 {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 6vw, 3.1rem);
  line-height: 1.14;
  letter-spacing: .01em;
  color: var(--paper);
  text-wrap: balance;
}

.page-faq .faq-lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.82;
  color: rgba(237, 232, 220, .78);
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding: 32px 0 76px;
}

/* ---------- 左侧主题索引 ---------- */
.page-faq .faq-index {
  border: var(--rule);
  background: var(--deep);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-index-head {
  padding: 14px 16px 12px;
  border-bottom: 1px solid var(--faq-hair);
  background: var(--lift);
}

.page-faq .faq-index-kicker {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .26em;
  color: var(--answer);
}

.page-faq .faq-index-count {
  margin: 6px 0 0;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--stone);
}

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

.page-faq .faq-index-list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--faq-hair);
  color: var(--paper);
  font-size: 15px;
  line-height: 1.5;
  text-decoration: none;
  box-shadow: inset 0 0 0 var(--answer);
  transition: background 200ms var(--ease), color 200ms var(--ease), box-shadow 200ms var(--ease);
}

.page-faq .faq-index-list .num {
  flex: none;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--stone);
}

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  background: var(--lift);
  color: var(--answer);
  box-shadow: inset 4px 0 0 var(--answer);
}

.page-faq .faq-index-list a:hover .num,
.page-faq .faq-index-list a:focus-visible .num {
  color: var(--answer);
}

.page-faq .faq-index-cta {
  display: block;
  padding: 15px 16px;
  background: var(--answer);
  color: var(--ink);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: .04em;
  text-decoration: none;
  border-top: 2px solid var(--ink);
  transition: background 200ms var(--ease);
}

.page-faq .faq-index-cta:hover,
.page-faq .faq-index-cta:focus-visible {
  background: var(--paper);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-group {
  position: relative;
  padding-top: 36px;
  scroll-margin-top: 96px;
}

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

.page-faq .faq-group:not(:first-child)::before {
  content: "";
  position: absolute;
  top: 4px;
  left: 0;
  right: 0;
  height: 16px;
  background: var(--deep);
  clip-path: polygon(0 0, 100% 76%, 100% 100%, 0 24%);
}

.page-faq .faq-group-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.page-faq .faq-num {
  flex: none;
  font-family: var(--font-num);
  font-size: clamp(28px, 4vw, 38px);
  line-height: .92;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--answer);
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.4vw, 1.85rem);
  line-height: 1.2;
  letter-spacing: .03em;
  color: var(--paper);
}

.page-faq .faq-group-note {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--stone);
}

.page-faq .faq-group:target .faq-group-title {
  color: var(--answer);
}

.page-faq .faq-group:target .faq-num {
  color: var(--live);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-items {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  border: 2px solid var(--moss);
  background: var(--deep);
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--answer);
  background: var(--lift);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  list-style: none;
  cursor: pointer;
  color: var(--paper);
  font-size: 16px;
  line-height: 1.55;
  font-weight: 600;
}

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-num);
  font-size: 19px;
  line-height: 1;
  color: var(--answer);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--live);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--answer);
  outline-offset: -4px;
}

.page-faq .faq-qnum {
  flex: none;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--stone);
  padding-top: 3px;
}

.page-faq .faq-item[open] .faq-qnum {
  color: var(--answer);
}

.page-faq .faq-answer {
  padding: 14px 16px 18px;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-answer p {
  margin: 0 0 10px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(237, 232, 220, .92);
}

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

.page-faq .faq-steps {
  margin: 12px 0 10px;
  padding-left: 20px;
  display: grid;
  gap: 6px;
  max-width: 62ch;
}

.page-faq .faq-steps li {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(237, 232, 220, .92);
}

.page-faq .faq-steps li::marker {
  color: var(--answer);
  font-family: var(--font-num);
}

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

.page-faq .faq-item[open] .faq-answer {
  animation: faq-open 240ms var(--ease);
}

/* ---------- 对照表 ---------- */
.page-faq .faq-table-wrap {
  margin: 16px 0 12px;
  max-width: 100%;
}

.page-faq .faq-compare {
  width: 100%;
  max-width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: 13.5px;
}

.page-faq .faq-compare caption {
  padding-bottom: 10px;
  text-align: left;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--stone);
}

.page-faq .faq-compare th,
.page-faq .faq-compare td {
  padding: 10px 10px;
  border: 1px solid var(--moss);
  text-align: left;
  vertical-align: top;
  word-break: break-word;
  line-height: 1.6;
}

.page-faq .faq-compare th {
  background: var(--slate);
  color: var(--stone);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .06em;
}

.page-faq .faq-compare td {
  background: var(--ink);
  color: var(--paper);
  font-size: 13.5px;
}

.page-faq .faq-compare td:first-child {
  color: var(--answer);
  font-family: var(--font-num);
}

/* ---------- 手机版配图 ---------- */
.page-faq .faq-mobile-figure {
  margin: 0 0 20px;
  display: grid;
  gap: 12px;
}

.page-faq .faq-mobile-figure .media {
  border: var(--rule);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  max-width: 100%;
}

.page-faq .faq-mobile-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.page-faq .faq-mobile-figure .media-caption {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 回到顶部 ---------- */
.page-faq .faq-top {
  position: fixed;
  right: 14px;
  bottom: 78px;
  z-index: 40;
  padding: 9px 13px;
  background: var(--answer);
  color: var(--ink);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-soft);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .14em;
  text-decoration: none;
}

.page-faq .faq-top:hover,
.page-faq .faq-top:focus-visible {
  background: var(--live);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 940px) {
  .page-faq .faq-hero-inner {
    padding-bottom: 38px;
  }

  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 52px;
    padding-top: 46px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 92px;
    align-self: start;
  }

  .page-faq .faq-group-head {
    gap: 20px;
    margin-bottom: 22px;
  }

  .page-faq .faq-item summary {
    font-size: 16.5px;
    padding: 16px 20px;
  }

  .page-faq .faq-answer {
    padding: 16px 20px 22px;
  }

  .page-faq .faq-mobile-figure {
    grid-template-columns: 230px minmax(0, 1fr);
    align-items: start;
    gap: 20px;
    margin-bottom: 24px;
  }

  .page-faq .faq-top {
    right: 24px;
    bottom: 26px;
  }
}

@media (min-width: 1160px) {
  .page-faq .faq-body .faq-group {
    max-width: 100%;
  }

  .page-faq .faq-compare th,
  .page-faq .faq-compare td {
    padding: 11px 14px;
  }
}

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

  .page-faq .faq-index-list a,
  .page-faq .faq-item,
  .page-faq .faq-index-cta {
    transition: none;
  }
}