.page-faq {
  --faq-line: rgba(92, 122, 110, 0.42);
  --faq-line-soft: rgba(92, 122, 110, 0.22);
  --faq-pad: clamp(14px, 2.4vw, 22px);
  background: var(--deep);
  color: var(--paper);
}

.page-faq .faq-crumbs {
  padding-top: clamp(14px, 2vw, 22px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(30px, 5vw, 58px) 0 clamp(34px, 6vw, 76px);
  border-bottom: var(--line-strong) solid var(--ink);
  background-color: var(--deep);
  background-image:
    linear-gradient(to right, var(--faq-line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--faq-line-soft) 1px, transparent 1px);
  background-size: 72px 72px;
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 18ch;
  font-family: var(--font-sans);
  font-weight: 800;
  font-stretch: condensed;
  font-size: clamp(34px, 7.2vw, 74px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.75;
  color: var(--stone);
}

.page-faq .faq-hero__jump {
  display: grid;
  gap: 10px;
  margin: clamp(10px, 2vw, 22px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__jump-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: var(--line) solid var(--moss);
  background: var(--panel);
  color: var(--paper);
  text-decoration: none;
  font-size: 15px;
  transition: border-color 180ms var(--ease-out), color 180ms var(--ease-out), transform 180ms var(--ease-out);
}

.page-faq .faq-hero__jump-idx {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--cyan);
}

.page-faq .faq-hero__jump-link:hover,
.page-faq .faq-hero__jump-link:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

@media (min-width: 820px) {
  .page-faq .faq-hero__jump {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }
  .page-faq .faq-hero__jump-item:nth-child(2) {
    margin-top: 22px;
  }
  .page-faq .faq-hero__jump-item:nth-child(3) {
    margin-top: 44px;
  }
}

/* ---------- 主体骨架 ---------- */

.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(24px, 4vw, 52px);
}

@media (min-width: 980px) {
  .page-faq .faq-body__grid {
    grid-template-columns: minmax(150px, 196px) minmax(0, 1fr);
  }
}

/* ---------- 分类索引 ---------- */

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

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__item {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--faq-line);
  color: var(--paper);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  transition: color 180ms var(--ease-out), border-color 180ms var(--ease-out);
}

.page-faq .faq-index__num {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--cyan);
}

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

@media (min-width: 980px) {
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
    align-self: start;
  }
  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-index__item {
    flex: 1 1 auto;
  }
  .page-faq .faq-index__link {
    border: 0;
    border-top: 1px solid var(--faq-line);
    padding: 13px 0;
    font-size: 15px;
  }
  .page-faq .faq-index__item:last-child .faq-index__link {
    border-bottom: 1px solid var(--faq-line);
  }
}

/* ---------- 分组 ---------- */

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

.page-faq .faq-group + .faq-group {
  margin-top: clamp(36px, 6vw, 68px);
  padding-top: clamp(30px, 5vw, 56px);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-faq .faq-group__idx {
  font-family: var(--font-data);
  font-size: clamp(24px, 4vw, 38px);
  font-weight: 500;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--moss);
  text-stroke: 1px var(--moss);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(21px, 3.2vw, 31px);
  line-height: 1.25;
  color: var(--paper);
}

.page-faq .faq-group__lead {
  margin: 10px 0 clamp(18px, 3vw, 30px);
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--stone);
}

.page-faq .faq-group__body {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
}

@media (min-width: 1150px) {
  .page-faq .faq-group__body--split {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
  }
}

/* ---------- 问答条目 ---------- */

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

.page-faq .qa {
  border-bottom: 1px solid var(--faq-line);
  transition: background-color 180ms var(--ease-out), color 180ms var(--ease-out), border-color 180ms var(--ease-out);
}

.page-faq .qa--lead {
  border: var(--line) solid var(--moss);
  background: var(--panel);
  margin-bottom: 8px;
}

.page-faq .qa[open] {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--ink);
  box-shadow: var(--shadow);
  margin-bottom: 14px;
}

.page-faq .qa--lead[open] {
  border-width: var(--line-strong);
}

.page-faq .qa__head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: var(--faq-pad);
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .qa__num {
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--cyan);
}

.page-faq .qa__q {
  flex: 1 1 auto;
  min-width: 0;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
}

.page-faq .qa__mark {
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
  fill: var(--cyan);
  transition: transform 180ms var(--ease-out), fill 180ms var(--ease-out);
}

.page-faq .qa__body {
  padding: 0 var(--faq-pad) clamp(16px, 2.4vw, 22px);
}

.page-faq .qa__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: inherit;
}

.page-faq .qa__body a {
  color: var(--clay);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.page-faq .qa:not([open]):hover {
  background: rgba(18, 48, 38, 0.8);
}

.page-faq .qa[open] .qa__q {
  color: var(--ink);
}

.page-faq .qa[open] .qa__num {
  color: var(--clay);
}

.page-faq .qa[open] .qa__mark {
  transform: rotate(180deg);
  fill: var(--clay);
}

/* ---------- 配图 ---------- */

.page-faq .ratio-12x7 {
  aspect-ratio: 12 / 7;
}

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

.page-faq .faq-figure .figure__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 1150px) {
  .page-faq .faq-figure {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
  }
}

/* ---------- 收尾 ---------- */

.page-faq .faq-help__head {
  display: grid;
  gap: 12px;
  max-width: 62ch;
}

.page-faq .faq-help__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-help__routes {
  display: grid;
  gap: 18px;
  margin-top: clamp(24px, 4vw, 40px);
}

@media (min-width: 800px) {
  .page-faq .faq-help__routes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-faq .faq-route {
  display: grid;
  gap: 10px;
  padding: clamp(18px, 2.6vw, 26px);
  border: var(--line-strong) solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: background-color 180ms var(--ease-out), transform 180ms var(--ease-out);
}

.page-faq .faq-route:hover,
.page-faq .faq-route:focus-visible {
  background: var(--cyan-soft);
  transform: translate(-2px, -2px);
}

.page-faq .faq-route__idx {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--clay);
}

.page-faq .faq-route__title {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(18px, 2.4vw, 23px);
  line-height: 1.3;
}

.page-faq .faq-route__text {
  font-size: 15px;
  line-height: 1.72;
  color: #2E3B35;
}

.page-faq .faq-route__go {
  justify-self: start;
  margin-top: 4px;
  padding-bottom: 3px;
  border-bottom: 2px solid var(--clay);
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--clay);
}

.page-faq .faq-help__back {
  margin: clamp(26px, 4vw, 42px) 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: #2E3B35;
}

.page-faq .faq-help__back a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__mark,
  .page-faq .faq-index__link,
  .page-faq .faq-hero__jump-link,
  .page-faq .faq-route {
    transition: none;
  }
  .page-faq .faq-hero__jump-link:hover,
  .page-faq .faq-hero__jump-link:focus-visible,
  .page-faq .faq-route:hover,
  .page-faq .faq-route:focus-visible {
    transform: none;
  }
}