.page-faq {
  --faq-no-w: 62px;
  --faq-gap: clamp(14px, 1.8vw, 28px);
  --faq-cell-pad: clamp(16px, 2.2vw, 26px);
  color: var(--mist-100);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 18px 0 0;
  font-size: var(--step--1);
  color: var(--mist-400);
}

.page-faq .crumb__link {
  color: var(--mist-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.page-faq .crumb__link:hover,
.page-faq .crumb__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .crumb__sep {
  color: var(--line-500);
}

/* ---------- 首屏框景 ---------- */

.page-faq .faq-hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  margin-top: 18px;
  border: 1px solid var(--line-hair);
  background:
    linear-gradient(180deg, var(--green-900) 0%, var(--ink-950) 100%);
}

.page-faq .faq-hero__frame {
  padding: clamp(24px, 4.2vw, 54px) clamp(18px, 3.4vw, 46px);
  background-image:
    linear-gradient(var(--line-hair) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-hair) 1px, transparent 1px);
  background-size: 88px 88px;
  background-position: -1px -1px;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  border-left: 2px solid var(--gold);
  padding-left: 10px;
}

.page-faq .faq-hero h1 {
  margin: 0;
  max-width: 22ch;
  font-size: clamp(30px, 6vw, 68px);
  line-height: 1.04;
  letter-spacing: -0.01em;
  font-weight: 800;
  font-stretch: condensed;
  color: var(--mist-100);
}

.page-faq .faq-hero__lede {
  margin: clamp(16px, 2.2vw, 26px) 0 0;
  max-width: 62ch;
  font-size: var(--step-0);
  line-height: 1.75;
  color: var(--mist-400);
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  border: 1px solid var(--line-hair);
  background: var(--line-hair);
}

.page-faq .faq-hero__fact {
  background: var(--ink-950);
  padding: 12px 14px;
}

.page-faq .faq-hero__fact dt {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist-400);
}

.page-faq .faq-hero__fact dd {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 28px);
  font-variant-numeric: tabular-nums;
  color: var(--mist-100);
}

.page-faq .faq-hero__fact dd span {
  margin-left: 4px;
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--mist-400);
}

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

/* ---------- 首图 ---------- */

.page-faq .faq-visual {
  margin: clamp(18px, 2.6vw, 30px) 0 0;
  border: 1px solid var(--line-hair);
  background: var(--green-900);
  position: relative;
}

.page-faq .faq-visual img,
.page-faq .faq-split__aside img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  opacity: 0.9;
}

/* ---------- 索引区 ---------- */

.page-faq .section {
  margin-top: clamp(36px, 5.4vw, 70px);
}

.page-faq .faq-index,
.page-faq .faq-sec,
.page-faq .faq-ask {
  scroll-margin-top: calc(var(--bar-h) + 20px);
}

.page-faq .faq-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-tabs .tag {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  transition: border-color var(--ease), color var(--ease), background-color var(--ease);
}

.page-faq .faq-tabs .tag:hover,
.page-faq .faq-tabs .tag:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line-hair);
  background: var(--line-hair);
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-height: 52px;
  padding: 13px 14px;
  background: var(--ink-950);
  color: var(--mist-100);
  text-decoration: none;
  font-size: var(--step--1);
  line-height: 1.5;
  transition: background-color var(--ease), color var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: var(--green-700);
  color: var(--cyan);
  outline: none;
}

.page-faq .faq-index__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

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

/* ---------- 答案条 ---------- */

.page-faq .faq-sec__note {
  margin: 0 0 4px;
  max-width: 64ch;
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--mist-400);
}

.page-faq .faq-list {
  display: flex;
  flex-direction: column;
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px var(--faq-gap);
  border-top: 1px solid var(--line-hair);
  scroll-margin-top: calc(var(--bar-h) + 20px);
}

.page-faq .faq-q__no {
  padding-top: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist-400);
}

.page-faq .faq-q.alert-row {
  background: var(--orange-veil);
  border-left: 2px solid var(--orange);
  padding-left: 14px;
}

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

.page-faq .fold__sum {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  padding: 15px 0 15px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .fold__sum:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .faq-q__title {
  flex: 1 1 240px;
  min-width: 0;
  font-size: var(--step-1);
  font-weight: 600;
  line-height: 1.5;
  color: var(--mist-100);
  transition: color var(--ease);
}

.page-faq .fold__sum:hover .faq-q__title {
  color: var(--cyan);
}

.page-faq .faq-q__tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.page-faq .faq-q__mark {
  flex: 0 0 auto;
  width: 14px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan);
}

.page-faq .faq-q__mark::before {
  content: "+";
}

.page-faq .fold[open] .faq-q__mark::before {
  content: "\2212";
}

.page-faq .fold[open] .fold__sum {
  border-bottom: 1px solid var(--line-hair);
}

.page-faq .fold__body {
  padding: 16px 0 22px;
  max-width: 68ch;
}

.page-faq .fold__body p {
  margin: 0;
  font-size: var(--step-0);
  line-height: 1.75;
  color: var(--mist-100);
}

.page-faq .fold__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-500);
  transition: border-color var(--ease);
}

.page-faq .fold__body a:hover,
.page-faq .fold__body a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  margin-top: 6px;
}

.page-faq .faq-split__aside {
  margin: 0;
  border: 1px solid var(--line-hair);
  background: var(--green-900);
}

.page-faq .grid .cell {
  min-width: 0;
}

.page-faq .faq-q--plain {
  border-top: 0;
  padding: 2px 0;
}

.page-faq .faq-q--plain .faq-q__no {
  padding-top: 15px;
}

/* ---------- 收尾通道 ---------- */

.page-faq .faq-ask__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  border: 1px solid var(--line-hair);
  background: var(--line-hair);
}

.page-faq .faq-ask__cell {
  background: var(--ink-950);
  padding: var(--faq-cell-pad);
}

.page-faq .faq-ask__h {
  margin: 0 0 12px;
  font-size: var(--step-1);
  font-weight: 700;
  color: var(--mist-100);
}

.page-faq .faq-ask__text {
  margin: 0 0 16px;
  max-width: 52ch;
  font-size: var(--step--1);
  line-height: 1.75;
  color: var(--mist-400);
}

.page-faq .faq-ask__mail {
  font-family: var(--font-mono);
  color: var(--cyan);
  word-break: break-all;
}

/* ---------- 断点 ---------- */

@media (min-width: 620px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 760px) {
  .page-faq .faq-q {
    grid-template-columns: var(--faq-no-w) minmax(0, 1fr);
  }

  .page-faq .faq-q__no {
    padding-top: 19px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1fr) 54px;
  }

  .page-faq .faq-hero__side {
    display: flex;
    align-items: center;
    justify-content: center;
    border-left: 1px solid var(--line-hair);
  }

  .page-faq .faq-hero__side span {
    writing-mode: vertical-rl;
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--mist-400);
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.75fr) minmax(240px, 0.85fr);
    align-items: start;
  }
}