.page-faq {
  --faq-line: 1px solid rgba(199, 207, 206, 0.18);
  --faq-soft: rgba(14, 43, 36, 0.5);
  --faq-soft-open: rgba(11, 58, 63, 0.55);
  --accent: var(--cyan);
  display: block;
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 18px 88px;
  color: var(--paper);
  font-family: var(--font-body);
}

/* ---------- 面包屑与首屏 ---------- */

.page-faq .breadcrumb {
  margin-bottom: 22px;
}

.page-faq .faq-hero {
  display: grid;
  gap: 28px;
  padding-bottom: 44px;
  border-bottom: var(--faq-line);
}

.page-faq .faq-hero__text h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(2rem, 6.2vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 10px 0 16px;
  color: var(--paper);
}

.page-faq .faq-hero__text .section__lead {
  color: var(--mist);
  font-size: 0.98rem;
  line-height: 1.8;
  max-width: 46ch;
  margin: 0;
}

.page-faq .faq-quick {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
}

.page-faq .faq-quick__item {
  border: var(--faq-line);
  border-radius: var(--radius-b);
  background: rgba(11, 58, 63, 0.3);
  padding: 12px 14px;
}

.page-faq .faq-quick dt {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--steel);
  text-transform: uppercase;
}

.page-faq .faq-quick dd {
  margin: 6px 0 0;
  font-size: 1.02rem;
  font-weight: 500;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

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

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border: var(--faq-line);
  border-radius: var(--radius-a);
  background: var(--midnight);
}

.page-faq .media__caption {
  margin-top: 10px;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-body {
  display: grid;
  gap: 34px;
  padding-top: 40px;
}

.page-faq .faq-index__label {
  margin: 0 0 10px;
  font-family: var(--font-data);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
}

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

.page-faq .faq-index__list::-webkit-scrollbar {
  display: none;
}

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

.page-faq .faq-index__link {
  display: block;
  padding: 8px 14px;
  border: 1px solid rgba(199, 207, 206, 0.22);
  border-radius: 999px;
  color: var(--silver);
  font-size: 0.86rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--paper);
  border-color: rgba(56, 242, 214, 0.5);
}

.page-faq .faq-index__link.is-active,
.page-faq .faq-index__link[aria-current="true"] {
  color: var(--orange);
  border-color: rgba(255, 138, 61, 0.6);
  background: rgba(255, 138, 61, 0.1);
}

/* ---------- 章节 ---------- */

.page-faq .faq-section {
  scroll-margin-top: 96px;
  border-top: var(--faq-line);
  padding-top: 40px;
  margin-top: 40px;
}

.page-faq .faq-answers > .faq-section:first-child {
  border-top: 0;
  padding-top: 0;
  margin-top: 0;
}

.page-faq .faq-answers > .faq-section:nth-child(2) {
  --accent: var(--orange);
}

.page-faq .faq-answers > .faq-section:nth-child(3) {
  --accent: var(--lime);
}

.page-faq .faq-answers > .faq-section:nth-child(4) {
  --accent: var(--silver);
}

.page-faq .faq-answers > .faq-section:nth-child(5) {
  --accent: var(--cyan);
}

.page-faq .faq-section__num {
  display: inline-block;
  padding: 3px 11px;
  margin-bottom: 14px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.page-faq .faq-section__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.45rem, 3.6vw, 2.15rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
  color: var(--paper);
}

.page-faq .faq-section__lead {
  margin: 0 0 24px;
  max-width: 56ch;
  font-size: 0.93rem;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 问答卡 ---------- */

.page-faq .qa {
  border: var(--faq-line);
  border-left: 2px solid var(--accent);
  border-radius: var(--radius-b);
  background: var(--faq-soft);
  margin-bottom: 12px;
  overflow: hidden;
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-faq .qa[open] {
  background: var(--faq-soft-open);
}

.page-faq .qa__summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.55;
  color: var(--paper);
}

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

.page-faq .qa__summary::marker {
  content: "";
}

.page-faq .qa__summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .qa__num {
  flex: 0 0 auto;
  padding-top: 3px;
  font-size: 0.78rem;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.page-faq .qa__q {
  flex: 1 1 auto;
}

.page-faq .qa__icon {
  position: relative;
  flex: 0 0 auto;
  width: 15px;
  height: 15px;
  margin-top: 5px;
}

.page-faq .qa__icon::before,
.page-faq .qa__icon::after {
  content: "";
  position: absolute;
  background: var(--accent);
  border-radius: 2px;
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.page-faq .qa__icon::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-faq .qa__icon::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

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

.page-faq .qa__a {
  padding: 0 18px 18px 47px;
  border-top: 1px solid rgba(199, 207, 206, 0.12);
  padding-top: 14px;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  font-size: 0.93rem;
  line-height: 1.82;
  color: var(--mist);
}

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

.page-faq .qa__a strong {
  color: var(--paper);
  font-weight: 600;
}

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 214, 0.35);
}

.page-faq .qa__a a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 配图 ---------- */

.page-faq .faq-figure {
  margin: 22px 0 18px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--faq-line);
  border-radius: var(--radius-b);
  background: var(--deep);
}

/* ---------- 断点 ---------- */

@media (min-width: 760px) {
  .page-faq {
    padding: 36px 32px 104px;
  }

  .page-faq .faq-quick {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }

  .page-faq .qa__a {
    padding-left: 58px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: center;
    gap: 40px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 60px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-faq .faq-index__list {
    display: block;
    overflow: visible;
    border-left: var(--faq-line);
    padding: 0;
  }

  .page-faq .faq-index__link {
    position: relative;
    display: block;
    padding: 9px 0 9px 16px;
    border: 0;
    border-radius: 0;
    background: none;
    font-size: 0.88rem;
  }

  .page-faq .faq-index__link::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 6px;
    bottom: 6px;
    width: 2px;
    background: transparent;
    transition: background-color 0.25s var(--ease);
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    background: none;
    color: var(--paper);
  }

  .page-faq .faq-index__link.is-active,
  .page-faq .faq-index__link[aria-current="true"] {
    color: var(--orange);
    background: none;
    border-color: transparent;
  }

  .page-faq .faq-index__link.is-active::before,
  .page-faq .faq-index__link[aria-current="true"]::before {
    background: var(--orange);
  }

  .page-faq .faq-quick dd {
    font-size: 1.1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}