.page-faq {
  --faq-line: rgba(46, 107, 90, 0.55);
  --faq-line-soft: rgba(46, 107, 90, 0.32);
  display: block;
  background:
    radial-gradient(120% 70% at 88% -8%, rgba(147, 233, 216, 0.1), transparent 62%),
    radial-gradient(85% 60% at -8% 34%, rgba(123, 38, 59, 0.14), transparent 66%);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(22px, 4vw, 44px) 0 clamp(26px, 4vw, 46px);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
  align-items: end;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(29px, 5.4vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 800;
  max-width: 17em;
}

.page-faq .faq-hero__intro {
  margin: 18px 0 0;
  max-width: 42em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.page-faq .faq-hero__jump a {
  padding: 7px 12px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--cyan);
  text-decoration: none;
  border: 1px solid var(--faq-line);
  background: rgba(13, 43, 36, 0.6);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 8px 100%, 0 calc(100% - 8px));
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .faq-hero__jump a:hover {
  color: var(--gold);
  border-color: var(--edge);
  background: var(--raise);
}

.page-faq .faq-hero__aside {
  padding: 18px 18px 14px;
}

.page-faq .faq-hero__aside-title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-stats {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-stats__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-stats__row:first-child {
  border-top: 0;
}

.page-faq .faq-stats dt {
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-stats dd {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  text-align: right;
}

/* ---------- 问题地图 ---------- */
.page-faq .faq-map__head {
  max-width: 44em;
}

.page-faq .faq-map h2 {
  margin: 12px 0 0;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-weight: 700;
}

.page-faq .faq-map__note {
  margin: 12px 0 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-map__nodes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-map__nodes a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 14px 12px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--text);
  text-decoration: none;
  background: var(--panel);
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .faq-map__nodes a:hover {
  background: var(--raise);
  color: var(--gold);
}

.page-faq .faq-map__nodes .mono {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-map__figure {
  margin: 20px 0 0;
  border: 1px solid var(--faq-line);
  background: var(--panel);
}

.page-faq .faq-map__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-map__figure .frame-caption {
  display: block;
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  border-top: 1px solid var(--faq-line-soft);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.5vw, 44px);
  align-items: start;
}

.page-faq .faq-index__inner {
  border-top: 1px solid var(--faq-line);
  padding-top: 10px;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 8px 12px;
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--faq-line);
  background: rgba(13, 43, 36, 0.5);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .faq-index__list a .mono {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-index__list a:hover {
  color: var(--text);
  border-color: rgba(147, 233, 216, 0.6);
}

.page-faq .faq-index__list a[aria-current="true"] {
  color: var(--bg);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-index__list a[aria-current="true"] .mono {
  color: var(--bg);
}

/* ---------- 问答组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(28px, 4vw, 48px);
  scroll-margin-top: 92px;
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-group__num {
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-group:nth-of-type(even) .faq-group__num {
  color: var(--gold);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  font-weight: 700;
}

.page-faq .qa {
  border-bottom: 1px solid var(--faq-line-soft);
  border-left: 2px solid transparent;
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .qa:hover {
  border-left-color: rgba(147, 233, 216, 0.45);
}

.page-faq .qa[open] {
  border-left-color: var(--cyan);
  background: rgba(20, 61, 51, 0.42);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 14px;
  align-items: start;
  gap: 10px;
  padding: 15px 14px 15px 14px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .qa__num {
  padding-top: 3px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .qa__text {
  font-size: 15px;
  line-height: 1.65;
  font-weight: 500;
  color: var(--text);
}

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

.page-faq .qa__mark {
  position: relative;
  width: 12px;
  height: 12px;
  margin-top: 7px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 0.18s var(--ease), opacity 0.18s var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  top: 5px;
  width: 12px;
  height: 2px;
}

.page-faq .qa__mark::after {
  left: 5px;
  top: 0;
  width: 2px;
  height: 12px;
}

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

.page-faq .qa__a {
  padding: 0 16px 18px 16px;
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .qa__a p + p {
  margin-top: 10px;
}

.page-faq .qa__a a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 2px solid var(--gold);
  padding-bottom: 1px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .qa__a a:hover {
  color: var(--gold);
}

/* ---------- 平板阅读配图 ---------- */
.page-faq .faq-plate {
  margin: 20px 0 0;
  border: 1px solid var(--faq-line);
  background: var(--panel);
}

.page-faq .faq-plate img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-plate .frame-caption {
  display: block;
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  border-top: 1px solid var(--faq-line-soft);
}

/* ---------- 底部行动 ---------- */
.page-faq .faq-tail__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  padding: clamp(22px, 3.4vw, 38px);
  border: 1px solid var(--faq-line);
  background:
    linear-gradient(135deg, rgba(20, 61, 51, 0.9), rgba(13, 43, 36, 0.92) 58%, rgba(123, 38, 59, 0.42));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-faq .faq-tail__copy h2 {
  margin: 10px 0 0;
  font-size: clamp(20px, 2.8vw, 28px);
  line-height: 1.28;
  letter-spacing: -0.015em;
  font-weight: 700;
}

.page-faq .faq-tail__copy p {
  margin: 12px 0 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-map__nodes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .qa__q {
    padding: 17px 18px;
  }

  .page-faq .qa__a {
    padding: 0 20px 20px 20px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
  }

  .page-faq .faq-map__nodes {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-faq .faq-tail__panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 32px;
  }

  .page-faq .faq-tail__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-index__inner {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--faq-line);
  }

  .page-faq .faq-index__list li {
    flex: 1 1 auto;
  }

  .page-faq .faq-index__list a {
    display: flex;
    width: 100%;
    margin-left: -1px;
    padding: 9px 0 9px 14px;
    white-space: normal;
    border: 0;
    border-left: 2px solid transparent;
    background: none;
  }

  .page-faq .faq-index__list a:hover {
    color: var(--text);
    border-left-color: rgba(147, 233, 216, 0.6);
  }

  .page-faq .faq-index__list a[aria-current="true"] {
    background: none;
    color: var(--cyan);
    border-left-color: var(--gold);
  }

  .page-faq .faq-index__list a[aria-current="true"] .mono {
    color: var(--gold);
  }

  .page-faq .qa__a {
    padding-left: 62px;
  }
}

@media (min-width: 1240px) {
  .page-faq .faq-answers {
    max-width: 78ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .faq-hero__jump a,
  .page-faq .faq-map__nodes a,
  .page-faq .faq-index__list a {
    transition: none;
  }
}