.page-faq {
  --faq-grid-line: rgba(36, 56, 74, 0.5);
  --faq-gap: clamp(20px, 4vw, 48px);
  --faq-ease: cubic-bezier(.2, .7, .3, 1);
  position: relative;
  overflow-x: clip;
}

/* 首屏 */
.page-faq .faq-head {
  position: relative;
  padding: clamp(22px, 4vw, 40px) 0 clamp(34px, 5vw, 62px);
  overflow: hidden;
}

.page-faq .faq-head::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--faq-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--faq-grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: .35;
  pointer-events: none;
}

.page-faq .faq-head::after {
  content: "";
  position: absolute;
  right: -12%;
  top: -40%;
  width: 58%;
  height: 180%;
  background: linear-gradient(135deg, rgba(46, 230, 168, .12), rgba(89, 217, 255, .03));
  clip-path: polygon(34% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-head .breadcrumb {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-head__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

.page-faq .faq-head__title {
  margin: 14px 0 0;
  font-size: clamp(1.95rem, 5.2vw, 3.3rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-faq .faq-head__lead {
  margin: 18px 0 0;
  max-width: 58ch;
  color: var(--c-muted);
  font-size: 1rem;
  line-height: 1.85;
}

.page-faq .faq-head__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-faq .faq-jump {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  border-top: var(--bw) solid var(--c-line);
}

.page-faq .faq-jump__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  padding: 14px 6px;
  border-bottom: var(--bw) solid var(--c-line);
  color: var(--c-text);
  text-decoration: none;
  transition: background-color .16s var(--faq-ease), color .16s var(--faq-ease);
}

.page-faq .faq-jump__link .idx {
  font-family: var(--font-num);
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--c-green);
  padding-top: 3px;
}

.page-faq .faq-jump__label {
  font-weight: 800;
  font-size: 1rem;
}

.page-faq .faq-jump__note {
  grid-column: 2;
  color: var(--c-muted);
  font-size: .82rem;
  line-height: 1.6;
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  background: rgba(46, 230, 168, .08);
  color: var(--c-green);
}

.page-faq .faq-head__kpis {
  position: relative;
  z-index: 1;
  margin-top: clamp(28px, 4vw, 46px);
}

/* 问答主体 */
.page-faq .faq-board {
  position: relative;
  padding: clamp(32px, 5vw, 64px) 0 clamp(46px, 7vw, 84px);
  background-color: var(--c-panel);
  background-image: linear-gradient(to right, rgba(36, 56, 74, .22) 1px, transparent 1px);
  background-size: 56px 100%;
  border-top: var(--bw) solid var(--c-line);
}

.page-faq .faq-board__toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 18px;
}

.page-faq .faq-board__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: clamp(20px, 3vw, 32px);
}

/* 左栏索引 */
.page-faq .faq-index__eyebrow {
  margin-bottom: 10px;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 12px;
  padding: 11px 10px 11px 12px;
  border-left: 3px solid transparent;
  border-bottom: 1px solid var(--c-line);
  color: var(--c-text);
  text-decoration: none;
  font-size: .86rem;
  line-height: 1.55;
  transition: background-color .16s var(--faq-ease), border-color .16s var(--faq-ease), color .16s var(--faq-ease);
}

.page-faq .faq-index__link .idx {
  font-family: var(--font-num);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--c-cyan);
  padding-top: 3px;
}

.page-faq .faq-index__link .tag {
  grid-column: 2;
  width: fit-content;
  margin-top: 2px;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: rgba(46, 230, 168, .08);
  border-left-color: var(--c-green);
  color: var(--c-green);
}

/* 右侧问答 */
.page-faq .qa-group {
  margin-bottom: clamp(30px, 5vw, 56px);
  scroll-margin-top: 96px;
}

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

.page-faq .qa-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: var(--bw) solid var(--c-line);
}

.page-faq .qa-group__num {
  font-family: var(--font-num);
  font-size: .8rem;
  letter-spacing: .12em;
  color: var(--c-green);
}

.page-faq .qa-group__title {
  margin: 0;
  font-size: clamp(1.3rem, 2.6vw, 1.7rem);
  letter-spacing: -0.01em;
}

.page-faq .qa-group__lead {
  margin: 14px 0 20px;
  max-width: 62ch;
  color: var(--c-muted);
  font-size: .92rem;
  line-height: 1.8;
}

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

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

.page-faq .qa {
  margin-top: 14px;
  scroll-margin-top: 96px;
}

.page-faq .qa__box {
  background: var(--c-void);
  border: var(--bw) solid var(--c-line);
  box-shadow: var(--shadow-hard);
  transition: border-color .16s var(--faq-ease), box-shadow .16s var(--faq-ease);
}

.page-faq .qa__box[open],
.page-faq .qa:target .qa__box {
  border-color: var(--c-green);
  box-shadow: var(--shadow-green);
}

.page-faq .qa__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__idx {
  font-family: var(--font-num);
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--c-cyan);
}

.page-faq .qa__q {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.5;
  letter-spacing: -0.01em;
}

.page-faq .qa__state {
  position: relative;
  width: 16px;
  height: 16px;
  flex: none;
}

.page-faq .qa__state::before,
.page-faq .qa__state::after {
  content: "";
  position: absolute;
  background: var(--c-green);
}

.page-faq .qa__state::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 2px;
}

.page-faq .qa__state::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 2px;
  transform-origin: center;
  transition: transform .16s var(--faq-ease);
}

.page-faq .qa__box[open] .qa__state::after {
  transform: scaleY(0);
}

.page-faq .qa__body {
  padding: 2px 18px 22px;
}

.page-faq .qa__body p {
  margin: 0 0 16px;
  color: var(--c-muted);
  font-size: .93rem;
  line-height: 1.85;
}

.page-faq .steps {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}

.page-faq .step {
  position: relative;
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 12px 0;
  border-top: 1px solid var(--c-line);
  cursor: pointer;
}

.page-faq .step__input {
  position: absolute;
  left: 0;
  top: 12px;
  width: 22px;
  height: 22px;
  margin: 0;
  opacity: 0;
}

.page-faq .step__mark {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border: var(--bw) solid var(--c-line);
  background: transparent;
  transition: background-color .16s var(--faq-ease), border-color .16s var(--faq-ease);
}

.page-faq .step__input:checked + .step__mark {
  background: var(--c-green);
  border-color: var(--c-green);
}

.page-faq .step__input:checked + .step__mark::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 1px;
  width: 5px;
  height: 10px;
  border: 2px solid var(--c-ink);
  border-top: 0;
  border-left: 0;
  transform: rotate(42deg);
}

.page-faq .step__input:focus-visible + .step__mark {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

.page-faq .step__num {
  font-family: var(--font-num);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--c-cyan);
  padding-top: 3px;
}

.page-faq .step__text {
  font-size: .9rem;
  line-height: 1.75;
  color: var(--c-text);
  transition: color .16s var(--faq-ease);
}

.page-faq .step__input:checked ~ .step__text {
  color: var(--c-muted);
  text-decoration: line-through;
  text-decoration-color: rgba(147, 167, 181, .5);
}

.page-faq .qa__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--c-line);
  font-family: var(--font-num);
  font-size: .76rem;
  letter-spacing: .05em;
  color: var(--c-muted);
}

.page-faq .qa__links a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px dashed rgba(89, 217, 255, .5);
}

.page-faq .qa__links a:hover,
.page-faq .qa__links a:focus-visible {
  color: var(--c-green);
  border-bottom-color: var(--c-green);
}

/* 桌面布局 */
@media (min-width: 960px) {
  .page-faq .faq-head__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .85fr);
    align-items: start;
    gap: clamp(32px, 5vw, 72px);
  }

  .page-faq .faq-board__grid {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
    align-self: start;
    max-height: calc(100vh - 48px);
    overflow-y: auto;
    padding-right: 6px;
  }

  .page-faq .qa__summary {
    padding: 18px 22px;
  }

  .page-faq .qa__body {
    padding: 2px 22px 26px;
  }

  .page-faq .faq-figure--aside {
    float: right;
    width: min(320px, 42%);
    margin: 0 0 18px 26px;
  }
}

@media (max-width: 520px) {
  .page-faq .qa__summary {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-faq .qa__idx {
    grid-column: 1 / -1;
  }

  .page-faq .step {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .page-faq .step__num {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__box,
  .page-faq .qa__state::after,
  .page-faq .faq-index__link,
  .page-faq .faq-jump__link,
  .page-faq .step__mark,
  .page-faq .step__text {
    transition: none;
  }
}