.page-faq {
  --faq-band: rgba(244, 241, 232, .06);
  --faq-glow: rgba(35, 197, 214, .22);
  --faq-mark-soft: rgba(216, 243, 74, .16);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(28px, 6vw, 72px) 0 clamp(24px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 92% 0%, rgba(255, 122, 24, .16), transparent 58%),
    linear-gradient(180deg, var(--green-950), var(--green-900));
  overflow: hidden;
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: auto 0 -1px 0;
  height: 70%;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 48px);
  opacity: .5;
  pointer-events: none;
}
.page-faq .faq-hero > .container { position: relative; }
.page-faq .faq-hero .breadcrumbs {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--fg-faint);
  margin-bottom: clamp(16px, 3vw, 28px);
}
.page-faq .faq-hero .breadcrumbs a { color: var(--cyan); text-decoration: none; }
.page-faq .faq-hero .breadcrumbs a:hover { color: var(--orange-soft); }
.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-stretch: condensed;
  letter-spacing: -.01em;
  font-size: clamp(30px, 6.4vw, 64px);
  line-height: 1.08;
  margin: 10px 0 0;
  max-width: 22ch;
  color: var(--fg);
}
.page-faq .faq-hero__lede {
  max-width: 60ch;
  margin-top: 20px;
  font-size: clamp(16px, 2.2vw, 18px);
  line-height: 1.75;
  color: var(--fg-muted);
}
.page-faq .faq-hero__meta {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px clamp(18px, 4vw, 44px);
  border-top: 1px solid var(--line);
  padding-top: 18px;
}
.page-faq .faq-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.page-faq .faq-hero__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 700;
  color: var(--orange);
  letter-spacing: .02em;
}
.page-faq .faq-hero__lab {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--fg-faint);
}

/* ---------- 分类分布图 ---------- */
.page-faq .faq-map {
  padding: clamp(30px, 5vw, 64px) 0;
  background: var(--green-900);
}
.page-faq .faq-map__grid {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  grid-template-columns: 1fr;
}
.page-faq .faq-map__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.2;
  margin: 0 0 14px;
  color: var(--fg);
}
.page-faq .faq-map__body {
  color: var(--fg-muted);
  line-height: 1.75;
  margin: 0;
  max-width: 56ch;
}
.page-faq .faq-map__tags { margin-top: 22px; }
.page-faq .faq-map__figure {
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--cyan);
  background: var(--faq-band);
  align-self: start;
}

/* ---------- 分类速查主体 ---------- */
.page-faq .faq-shell {
  background:
    linear-gradient(180deg, var(--green-900), var(--green-800) 40%, var(--green-900));
  border-top: 1px solid var(--line);
}
.page-faq .faq-shell__head { margin-bottom: clamp(24px, 4vw, 40px); }
.page-faq .faq-layout {
  display: grid;
  gap: clamp(20px, 3.4vw, 40px);
  grid-template-columns: 1fr;
}
.page-faq .faq-index {
  position: relative;
  padding: 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(8, 42, 33, .58);
  backdrop-filter: blur(6px);
}
.page-faq .faq-index__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
  margin: 0 0 14px;
  text-transform: uppercase;
}
.page-faq .faq-index__tags {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.page-faq .faq-index__btn {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 11px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  color: var(--fg-muted);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.3;
  text-align: left;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}
.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--orange);
}
.page-faq .faq-index__btn:hover { border-color: var(--line-strong); color: var(--fg); }
.page-faq .faq-index__btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.page-faq .faq-index__btn.is-active {
  background: var(--marker);
  border-color: var(--marker);
  color: var(--ink);
}
.page-faq .faq-index__btn.is-active .faq-index__no { color: var(--green-950); }
.page-faq .faq-index__hint {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--fg-faint);
}
.page-faq .faq-index__hint a { color: var(--orange-soft); }

/* 问答条目 */
.page-faq .faq-list { min-width: 0; }
.page-faq .faq-group { margin-bottom: clamp(20px, 3vw, 32px); }
.page-faq .faq-group[hidden] { display: none; }
.page-faq .faq-group__title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.6vw, 24px);
  color: var(--fg);
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--line-strong);
}
.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--orange);
}
.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.page-faq .faq-item:hover { border-color: var(--orange-soft); }
.page-faq .faq-item[open] {
  border-left: 4px solid var(--orange);
  background: var(--paper);
}
.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(16px, 2.2vw, 19px);
  line-height: 1.35;
  color: var(--ink);
}
.page-faq .faq-item__q::-webkit-details-marker { display: none; }
.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -2px;
}
.page-faq .faq-item__no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan-deep);
  flex: 0 0 auto;
  padding-top: 3px;
}
.page-faq .faq-item__text { flex: 1 1 auto; min-width: 0; }
.page-faq .faq-item__freq {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  background: rgba(14, 110, 124, .12);
  color: var(--cyan-deep);
  border-color: rgba(14, 110, 124, .35);
}
.page-faq .faq-item[open] .faq-item__freq {
  background: var(--marker);
  color: var(--ink);
  border-color: var(--marker);
}
.page-faq .faq-item__a {
  padding: 0 16px 18px 16px;
  border-top: 1px solid rgba(17, 22, 20, .1);
}
.page-faq .faq-item__a p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(17, 22, 20, .82);
  max-width: 62ch;
}
.page-faq .faq-item__a a {
  color: var(--cyan-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .faq-item__a a:hover { color: var(--orange); }

/* ---------- 通勤使用提示 ---------- */
.page-faq .faq-commute {
  padding: clamp(30px, 5vw, 68px) 0;
  background:
    linear-gradient(180deg, var(--green-950), var(--green-900) 70%),
    var(--green-900);
  border-top: 1px solid var(--line);
}
.page-faq .faq-commute__grid {
  display: grid;
  gap: clamp(22px, 4vw, 48px);
  grid-template-columns: 1fr;
}
.page-faq .faq-commute__title {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 40px);
  line-height: 1.14;
  margin: 8px 0 0;
  color: var(--fg);
  max-width: 24ch;
}
.page-faq .faq-commute__body {
  margin: 18px 0 0;
  color: var(--fg-muted);
  line-height: 1.8;
  max-width: 58ch;
}
.page-faq .faq-commute__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.page-faq .faq-commute__back {
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
}
.page-faq .faq-commute__back a { color: var(--cyan); }
.page-faq .faq-commute__back a:hover { color: var(--orange-soft); }
.page-faq .faq-commute__figure {
  border: 1px solid var(--line-strong);
  border-bottom: 3px solid var(--orange);
  background: var(--faq-band);
  align-self: start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 641px) {
  .page-faq .faq-commute__grid { grid-template-columns: 1fr 1fr; align-items: start; }
}

@media (min-width: 861px) {
  .page-faq .faq-map__grid { grid-template-columns: 7fr 5fr; align-items: center; }
  .page-faq .faq-layout { grid-template-columns: 300px minmax(0, 1fr); align-items: start; }
  .page-faq .faq-index {
    position: sticky;
    top: 120px;
  }
  .page-faq .faq-commute__grid { grid-template-columns: 7fr 5fr; }
}

@media (min-width: 1100px) {
  .page-faq .faq-layout { grid-template-columns: 340px minmax(0, 1fr); }
  .page-faq .faq-index { padding: 22px; }
}

@media (max-width: 640px) {
  .page-faq .faq-index { padding: 14px; }
  .page-faq .faq-index__tags {
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: 6px;
    gap: 8px;
    scrollbar-width: thin;
  }
  .page-faq .faq-index__btn {
    width: auto;
    flex: 0 0 auto;
    white-space: nowrap;
    font-size: 14px;
    padding: 9px 12px;
  }
  .page-faq .faq-item__q { flex-wrap: wrap; }
  .page-faq .faq-item__freq { order: 3; }
  .page-faq .faq-hero__meta { gap: 12px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-index__btn { transition: none; }
}