.page-faq {
  --faq-ink-soft: #33474d;
  --faq-line: rgba(217, 228, 227, 0.95);
  --faq-rail-top: 104px;
  display: block;
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 92% at 84% 6%, rgba(45, 225, 194, 0.2), transparent 58%),
    radial-gradient(96% 84% at 4% 104%, rgba(59, 47, 99, 0.62), transparent 62%),
    var(--ky-deep);
  color: var(--ky-mist);
  padding: clamp(22px, 4vw, 38px) 0 clamp(46px, 7vw, 92px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -34%;
  width: min(640px, 74vw);
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(45, 225, 194, 0.2);
  box-shadow:
    0 0 0 30px rgba(45, 225, 194, 0.05),
    0 0 0 68px rgba(45, 225, 194, 0.028);
  pointer-events: none;
}

.page-faq .faq-hero > .ky-shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .ky-crumbs {
  margin: 0 0 clamp(20px, 3vw, 34px);
  font-size: 13px;
  color: rgba(244, 248, 247, 0.62);
}

.page-faq .faq-hero .ky-crumbs__item + .ky-crumbs__item::before {
  content: "／";
  margin: 0 8px;
  color: rgba(45, 225, 194, 0.55);
}

.page-faq .faq-hero .ky-crumbs__link {
  color: var(--ky-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(45, 225, 194, 0.35);
}

.page-faq .faq-hero .ky-crumbs__link:hover {
  border-bottom-color: var(--ky-coral);
  color: var(--ky-coral);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

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

.page-faq .faq-hero .ky-eyebrow {
  margin: 0 0 14px;
  font-family: var(--ky-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ky-cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-size: clamp(32px, 6.6vw, 62px);
  line-height: 1.07;
  letter-spacing: -0.025em;
  font-weight: 800;
  color: #fff;
  max-width: 18ch;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 54ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.82;
  color: rgba(244, 248, 247, 0.78);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 30px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 13px;
  color: rgba(244, 248, 247, 0.68);
}

.page-faq .faq-hero__stat b {
  font-family: var(--ky-mono);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--ky-cyan);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--ky-radius-lg);
  overflow: hidden;
  box-shadow: 0 44px 90px -56px rgba(0, 0, 0, 0.95);
}

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

/* ============ 主体两栏 ============ */
.page-faq .faq-body {
  background: var(--ky-mist);
  padding: clamp(40px, 6vw, 84px) 0 clamp(46px, 7vw, 98px);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}

/* 左侧索引栏 */
.page-faq .faq-rail {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.page-faq .faq-rail__label {
  margin: 0;
  font-family: var(--ky-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #5a7078;
}

.page-faq .faq-index {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex: none;
  padding: 11px 17px;
  border-radius: var(--ky-pill);
  background: #fff;
  box-shadow: inset 0 0 0 1px var(--ky-cloud);
  color: var(--ky-deep);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.25s var(--ky-ease), color 0.25s var(--ky-ease),
    box-shadow 0.25s var(--ky-ease);
}

.page-faq .faq-index__num {
  font-family: var(--ky-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--ky-coral);
  transition: color 0.25s var(--ky-ease);
}

.page-faq .faq-index__link:hover {
  box-shadow: inset 0 0 0 1px var(--ky-cyan);
}

.page-faq .faq-index__link[aria-current="true"] {
  background: var(--ky-deep);
  color: #fff;
  box-shadow: inset 0 0 0 1px var(--ky-deep);
}

.page-faq .faq-index__link[aria-current="true"] .faq-index__num {
  color: var(--ky-cyan);
}

.page-faq .faq-rail__tip {
  margin: 6px 0 0;
  padding: 17px 18px;
  border-radius: 18px;
  background: linear-gradient(158deg, var(--ky-teal), #0b2f33);
  color: rgba(244, 248, 247, 0.82);
}

.page-faq .faq-rail__tiptext {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.72;
}

.page-faq .faq-rail__copy {
  display: inline-flex;
  align-items: center;
  padding: 8px 15px;
  border: 1px solid rgba(45, 225, 194, 0.45);
  border-radius: var(--ky-pill);
  background: rgba(45, 225, 194, 0.1);
  color: var(--ky-cyan);
  font-family: var(--ky-sans);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.25s var(--ky-ease), color 0.25s var(--ky-ease);
}

.page-faq .faq-rail__copy:hover {
  background: var(--ky-cyan);
  color: var(--ky-deep);
}

/* 问题分组 */
.page-faq .faq-groups {
  display: grid;
  gap: clamp(34px, 5vw, 62px);
  min-width: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 2px 14px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--ky-deep);
  margin-bottom: 4px;
}

.page-faq .faq-group__num {
  font-family: var(--ky-mono);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--ky-coral);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 2.7vw, 28px);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.25;
  color: var(--ky-deep);
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 0;
  font-family: var(--ky-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: #5a7078;
}

/* 手风琴 */
.page-faq .faq-list {
  display: block;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 650;
  line-height: 1.56;
  color: var(--ky-deep);
  transition: color 0.22s var(--ky-ease);
}

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

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

.page-faq .faq-item__q:hover {
  color: var(--ky-coral);
}

.page-faq .faq-item__mark {
  flex: none;
  width: 26px;
  height: 26px;
  margin-top: 2px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--ky-cloud);
  color: var(--ky-deep);
  transition: background 0.25s var(--ky-ease), color 0.25s var(--ky-ease),
    transform 0.3s var(--ky-ease);
}

.page-faq .faq-item__mark::before {
  content: "";
  width: 11px;
  height: 11px;
  background:
    linear-gradient(currentColor, currentColor) 50% 50% / 100% 1.6px no-repeat,
    linear-gradient(currentColor, currentColor) 50% 50% / 1.6px 100% no-repeat;
}

.page-faq .faq-item[open] > .faq-item__q {
  color: var(--ky-ink);
}

.page-faq .faq-item[open] .faq-item__mark {
  background: var(--ky-coral);
  color: #fff;
  transform: rotate(45deg);
}

.page-faq .faq-item__a {
  padding: 0 4px 24px 40px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--faq-ink-soft);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-inline {
  color: var(--ky-deep);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--ky-cyan);
  padding-bottom: 1px;
  transition: color 0.2s var(--ky-ease), border-color 0.2s var(--ky-ease);
}

.page-faq .faq-inline:hover {
  color: var(--ky-coral);
  border-bottom-color: var(--ky-coral);
}

.page-faq .faq-compare {
  margin: 16px 0 4px;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--ky-shadow);
}

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

/* ============ 出口区 ============ */
.page-faq .faq-next {
  background: linear-gradient(155deg, var(--ky-deep) 0%, var(--ky-indigo) 100%);
  color: var(--ky-mist);
  padding: clamp(46px, 6vw, 88px) 0 clamp(54px, 7vw, 104px);
}

.page-faq .faq-next__title {
  margin: 0 0 14px;
  font-size: clamp(24px, 3.6vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: #fff;
}

.page-faq .faq-next__lede {
  max-width: 60ch;
  margin: 0 0 30px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(244, 248, 247, 0.76);
}

.page-faq .faq-next__list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-next__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
  padding: 24px 22px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.06);
  box-shadow: inset 0 0 0 1px rgba(45, 225, 194, 0.22);
  color: inherit;
  text-decoration: none;
  transition: background 0.3s var(--ky-ease), transform 0.3s var(--ky-ease),
    box-shadow 0.3s var(--ky-ease);
}

.page-faq .faq-next__card:hover {
  background: rgba(45, 225, 194, 0.13);
  box-shadow: inset 0 0 0 1px rgba(45, 225, 194, 0.5);
  transform: translateY(-3px);
}

.page-faq .faq-next__k {
  font-family: var(--ky-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ky-cyan);
}

.page-faq .faq-next__d {
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(244, 248, 247, 0.8);
}

.page-faq .faq-next__go {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 8px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--ky-coral);
}

.page-faq .faq-next__go .ky-arrow {
  transition: transform 0.25s var(--ky-ease);
}

.page-faq .faq-next__card:hover .ky-arrow {
  transform: translateX(4px);
}

/* ============ 响应式 ============ */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: center;
  }
}

@media (min-width: 820px) {
  .page-faq .faq-next__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: var(--faq-rail-top);
  }

  .page-faq .faq-index {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
    gap: 4px;
  }

  .page-faq .faq-index__link {
    justify-content: flex-start;
    padding: 12px 18px;
    white-space: normal;
  }
}

@media (max-width: 979px) {
  .page-faq .faq-rail__tip {
    display: none;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-hero__title {
    max-width: none;
  }

  .page-faq .faq-hero__meta {
    gap: 14px 22px;
  }

  .page-faq .faq-item__q {
    gap: 11px;
    padding: 16px 2px;
  }

  .page-faq .faq-item__mark {
    width: 23px;
    height: 23px;
  }

  .page-faq .faq-item__a {
    padding: 0 2px 20px 0;
  }

  .page-faq .faq-next__card {
    padding: 20px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item__mark,
  .page-faq .faq-item__q,
  .page-faq .faq-next__card,
  .page-faq .faq-next__go .ky-arrow {
    transition: none;
  }

  .page-faq .faq-next__card:hover {
    transform: none;
  }
}