.page-faq {
  --faq-line: rgba(47, 184, 255, .32);
  --faq-hair: rgba(143, 163, 184, .16);
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(44px, 8vw, 96px) clamp(36px, 6vw, 64px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto auto;
  width: min(640px, 78vw);
  height: min(640px, 78vw);
  background:
    radial-gradient(circle at 30% 30%, rgba(47, 184, 255, .16), transparent 62%),
    radial-gradient(circle at 74% 70%, rgba(139, 107, 255, .14), transparent 60%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 58px);
  align-items: start;
}

.page-faq .faq-hero__crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--text-dim);
}

.page-faq .faq-hero__crumb .breadcrumb__item {
  color: var(--text-dim);
  text-decoration: none;
}

.page-faq .faq-hero__crumb a.breadcrumb__item:hover {
  color: var(--green);
}

.page-faq .faq-hero__crumb > * + *::before {
  content: "/";
  margin-right: 8px;
  color: rgba(143, 163, 184, .55);
}

.page-faq .faq-hero__kicker {
  color: var(--blue);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  max-width: 18ch;
}

.page-faq .faq-hero__lead {
  margin-top: 22px;
  max-width: 34em;
  color: var(--text-soft);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.page-faq .faq-hero__card {
  padding: clamp(22px, 3.4vw, 32px);
}

.page-faq .faq-hero__card-tag {
  color: var(--green);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding-block: 14px;
  border-bottom: 1px dashed rgba(143, 163, 184, .22);
}

.page-faq .faq-steps li:first-child {
  padding-top: 0;
}

.page-faq .faq-steps li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-steps__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--green);
}

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

/* ============ 分组锚点条 ============ */
.page-faq .faq-jump {
  position: sticky;
  top: 0;
  z-index: 6;
  background: linear-gradient(180deg, rgba(7, 11, 16, .97), rgba(7, 11, 16, .8));
  border-block: 1px solid var(--faq-hair);
}

.page-faq .faq-jump__inner {
  display: flex;
  gap: 10px;
  padding-block: 12px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-jump__link {
  flex: 0 0 auto;
  padding: 8px 15px;
  border: 1px solid rgba(143, 163, 184, .28);
  border-radius: 999px;
  font-size: 13px;
  line-height: 1;
  color: var(--text-dim);
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  color: var(--ink-900);
  background: var(--green);
  border-color: var(--green);
}

/* ============ 分组 ============ */
.page-faq .faq-grp {
  padding-block: 0;
  scroll-margin-top: 78px;
}

.page-faq .faq-grp + .faq-grp {
  margin-top: clamp(64px, 9vw, 108px);
}

.page-faq .faq-grp:first-of-type {
  margin-top: clamp(52px, 7vw, 84px);
}

.page-faq .faq-grp__head {
  max-width: 62ch;
}

.page-faq .faq-grp__intro {
  margin-top: 14px;
  max-width: 34em;
  color: var(--text-dim);
}

.page-faq .faq-grp__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 36px);
  margin-top: clamp(24px, 3.4vw, 38px);
}

/* ============ 问答条目 ============ */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.page-faq .faq-item {
  background: var(--ink-800);
  border: 1px solid var(--faq-hair);
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--cut-s) 100%, 0 calc(100% - var(--cut-s)));
  transition: border-color .22s ease, background-color .22s ease;
}

.page-faq .faq-item:hover {
  border-color: rgba(47, 184, 255, .4);
}

.page-faq .faq-item[open] {
  background: var(--ink-700);
  border-color: rgba(59, 227, 143, .34);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px clamp(16px, 3vw, 26px);
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

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

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

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

.page-faq .faq-item__icon {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border: 1px solid rgba(143, 163, 184, .38);
  border-radius: 50%;
  transition: border-color .24s ease, transform .24s ease;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--text-dim);
  transition: transform .24s ease, background-color .24s ease;
}

.page-faq .faq-item__icon::before {
  width: 10px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__icon::after {
  width: 1.5px;
  height: 10px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item[open] .faq-item__icon {
  border-color: var(--green);
  transform: rotate(180deg);
}

.page-faq .faq-item[open] .faq-item__icon::before,
.page-faq .faq-item[open] .faq-item__icon::after {
  background: var(--green);
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .faq-item__a {
  margin: 0 clamp(16px, 3vw, 26px) 20px;
  padding: 15px 18px;
  border-left: 2px solid var(--blue);
  background: rgba(47, 184, 255, .06);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-soft);
}

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

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

.page-faq .faq-item__a a:hover {
  color: var(--green);
}

/* ============ 指标名词 ============ */
.page-faq .term {
  display: inline-block;
  padding: 1px 8px;
  border: 1px solid rgba(139, 107, 255, .48);
  border-radius: 4px;
  background: rgba(139, 107, 255, .14);
  font-family: var(--font-mono);
  font-size: .88em;
  letter-spacing: .01em;
  color: var(--text);
  white-space: nowrap;
  cursor: help;
}

/* ============ 方形图示 ============ */
.page-faq .faq-figure {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-figure .media__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ============ 联系面板 ============ */
.page-faq .faq-contact {
  padding: clamp(22px, 3.4vw, 30px);
  align-self: start;
}

.page-faq .faq-contact__tag {
  color: var(--orange);
}

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

.page-faq .faq-contact__row {
  display: grid;
  gap: 4px;
  padding-block: 12px;
  border-bottom: 1px dashed rgba(143, 163, 184, .2);
}

.page-faq .faq-contact__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-contact__row dt {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--text-dim);
}

.page-faq .faq-contact__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  word-break: break-word;
}

.page-faq .faq-contact__cta {
  margin-top: 22px;
}

/* ============ 底部快捷 ============ */
.page-faq .faq-footnav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(56px, 8vw, 96px);
}

/* ============ 桌面端 ============ */
@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: clamp(40px, 6vw, 80px);
    align-items: center;
  }

  .page-faq .faq-hero__card {
    margin-top: 40px;
  }

  .page-faq .faq-grp__body--with-aside {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, .88fr);
    align-items: start;
  }

  .page-faq .faq-grp__body--flip {
    grid-template-columns: minmax(0, .88fr) minmax(0, 1.62fr);
    align-items: start;
  }

  .page-faq .faq-grp__body--flip .faq-figure {
    order: -1;
  }

  .page-faq .faq-figure {
    position: sticky;
    top: 92px;
  }

  .page-faq .faq-contact {
    position: sticky;
    top: 92px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero__title {
    max-width: 16ch;
  }
}

/* ============ 动效偏好 ============ */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__icon,
  .page-faq .faq-item__icon::before,
  .page-faq .faq-item__icon::after,
  .page-faq .faq-jump__link {
    transition: none;
  }
}