.page-faq {
  --faq-radius: 20px;
  --faq-gap: clamp(14px, 2.6vw, 20px);
  --faq-pad: clamp(34px, 7vw, 86px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 6vw, 74px) 0 clamp(28px, 5vw, 62px);
  background:
    radial-gradient(circle at 86% 8%, rgba(34, 224, 208, .16), transparent 58%),
    linear-gradient(158deg, var(--night-2) 0%, var(--night) 62%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -10%;
  top: -26%;
  width: 52%;
  height: 148%;
  clip-path: polygon(42% 0, 100% 0, 100% 100%, 0 100%);
  background: linear-gradient(180deg, rgba(255, 122, 26, .20), rgba(255, 122, 26, 0) 78%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(180deg, rgba(34, 224, 208, .05) 0 1px, transparent 1px 5px);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumb__sep {
  margin: 0 .45em;
  color: var(--muted);
  opacity: .7;
}

.page-faq .faq-hero__kicker {
  margin: clamp(20px, 4vw, 34px) 0 0;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  color: #FFFFFF;
  line-height: 1.08;
  max-width: 20ch;
}

.page-faq .faq-hero__num {
  display: inline-block;
  color: var(--orange);
  text-shadow: 0 0 46px rgba(255, 122, 26, .45);
}

.page-faq .faq-hero__lede {
  margin: clamp(16px, 3vw, 26px) 0 0;
  max-width: 64ch;
  color: var(--text);
}

/* 胶囊跳转条 */
.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(22px, 4vw, 34px);
}

.page-faq .faq-jump .pill {
  display: inline-flex;
  align-items: center;
  padding: 9px 17px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: rgba(23, 20, 58, .6);
  color: var(--text);
  font-size: 14px;
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease, background-color .2s ease;
}

.page-faq .faq-jump .pill:hover,
.page-faq .faq-jump .pill:focus-visible {
  border-color: var(--line-strong);
  background: rgba(34, 224, 208, .1);
  color: var(--cyan);
}

/* 数字条 */
.page-faq .faq-stats {
  list-style: none;
  margin: clamp(26px, 5vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-stats__cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 16px 18px;
  background: rgba(11, 10, 31, .78);
}

.page-faq .faq-stats__val {
  font-family: var(--font-mono);
  font-size: clamp(24px, 4.4vw, 34px);
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -.02em;
}

.page-faq .faq-stats__key {
  color: var(--muted);
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-block {
  padding: var(--faq-pad) 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-block:first-of-type {
  border-top: 0;
}

.page-faq .faq-block__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(24px, 4vw, 40px);
  max-width: 62ch;
}

.page-faq .faq-block__no {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 34px);
  line-height: 1;
  color: var(--cyan);
  opacity: .55;
  letter-spacing: -.02em;
}

.page-faq .faq-block__title {
  margin: 0;
  color: #FFFFFF;
  line-height: 1.14;
}

.page-faq .faq-block__note {
  margin: 0;
  color: var(--muted);
  font-size: clamp(15px, 2.2vw, 16.5px);
  line-height: 1.75;
}

/* ---------- 问题列表 ---------- */
.page-faq .faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-card {
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: linear-gradient(180deg, rgba(42, 37, 96, .38), rgba(23, 20, 58, .55));
  overflow: hidden;
  transition: border-color .22s ease, box-shadow .22s ease, background-color .22s ease;
}

.page-faq .faq-card:hover {
  border-color: rgba(34, 224, 208, .28);
}

.page-faq .faq-card[open] {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 1px rgba(34, 224, 208, .16), 0 26px 54px -36px rgba(34, 224, 208, .75);
}

.page-faq .faq-card__summary {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 22px;
  align-items: center;
  gap: 14px;
  padding: 17px 16px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-card__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
  transition: color .22s ease;
}

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

.page-faq .faq-card__q {
  font-weight: 600;
  font-size: clamp(15px, 2.5vw, 17px);
  line-height: 1.5;
  color: var(--text);
}

.page-faq .faq-card[open] .faq-card__q {
  color: #FFFFFF;
}

.page-faq .faq-card__sign {
  position: relative;
  width: 20px;
  height: 20px;
  justify-self: end;
}

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

.page-faq .faq-card__sign::before {
  width: 14px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-card__sign::after {
  width: 2px;
  height: 14px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-card[open] .faq-card__sign::before {
  background: var(--cyan);
}

.page-faq .faq-card[open] .faq-card__sign::after {
  transform: translate(-50%, -50%) scaleY(0);
  background: var(--cyan);
}

.page-faq .faq-card__body {
  padding: 0 16px 20px;
  display: grid;
  gap: 14px;
}

.page-faq .faq-card__answer {
  margin: 0;
  color: var(--muted);
  font-size: clamp(14.5px, 2.2vw, 16px);
  line-height: 1.78;
}

.page-faq .faq-card__link {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--cyan);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(34, 224, 208, .38);
  transition: color .2s ease, border-color .2s ease;
}

.page-faq .faq-card__link::after {
  content: "→";
  font-size: 12px;
}

.page-faq .faq-card__link:hover,
.page-faq .faq-card__link:focus-visible {
  color: #FFFFFF;
  border-color: #FFFFFF;
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  position: relative;
  margin: 0 0 clamp(22px, 4vw, 36px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--night-2);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

.page-faq .faq-figure--aside img {
  aspect-ratio: 10 / 7;
}

.page-faq .faq-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(180deg, rgba(34, 224, 208, .08) 0 1px, transparent 1px 4px);
  pointer-events: none;
}

.page-faq .faq-figure__tag {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 1;
  padding: 7px 13px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong);
  background: rgba(11, 10, 31, .84);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
}

/* ---------- 数据区左右布局 ---------- */
.page-faq .faq-block__split {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-faq .faq-aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-aside .faq-figure {
  margin-bottom: 0;
}

.page-faq .faq-aside__note {
  border-radius: var(--faq-radius);
}

.page-faq .faq-aside__key {
  margin: 0 0 12px;
  color: var(--cyan);
}

.page-faq .faq-aside__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-aside__list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-left: 14px;
  position: relative;
}

.page-faq .faq-aside__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--orange);
}

.page-faq .faq-aside__num {
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.2;
  color: #FFFFFF;
  letter-spacing: -.02em;
  min-width: 4.6em;
}

.page-faq .faq-aside__txt {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

/* ---------- 联系章节 ---------- */
.page-faq .faq-help {
  padding: var(--faq-pad) 0 calc(var(--faq-pad) + 8px);
  border-top: 1px solid var(--line-strong);
  background:
    radial-gradient(circle at 12% 0%, rgba(34, 224, 208, .12), transparent 56%),
    linear-gradient(150deg, var(--haze) 0%, var(--night-2) 58%, var(--night) 100%);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 16px;
}

.page-faq .faq-help__card {
  display: grid;
  gap: 8px;
  align-content: start;
  border-radius: var(--faq-radius);
  border-color: var(--line);
}

.page-faq .faq-help__key {
  margin: 0;
  color: var(--cyan);
}

.page-faq .faq-help__val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(19px, 3vw, 23px);
  line-height: 1.3;
  color: #FFFFFF;
  letter-spacing: -.02em;
  word-break: break-word;
}

.page-faq .faq-help__val--text {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: clamp(17px, 2.6vw, 20px);
}

.page-faq .faq-help__desc {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-faq .faq-help__link {
  justify-self: start;
  margin-top: 4px;
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--orange);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(255, 122, 26, .5);
  transition: color .2s ease, border-color .2s ease;
}

.page-faq .faq-help__link:hover,
.page-faq .faq-help__link:focus-visible {
  color: #FFFFFF;
  border-color: #FFFFFF;
}

.page-faq .faq-help__foot {
  margin-top: clamp(26px, 5vw, 44px);
  padding-top: clamp(22px, 4vw, 32px);
  border-top: 1px solid var(--line);
  display: grid;
  gap: 20px;
}

.page-faq .faq-help__tip {
  margin: 0;
  max-width: 62ch;
  color: var(--text);
  font-size: clamp(15px, 2.2vw, 16.5px);
  line-height: 1.78;
}

.page-faq .faq-help__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-totop-wrap {
  margin: clamp(30px, 5vw, 48px) 0 0;
}

.page-faq .faq-totop {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  letter-spacing: .06em;
  text-transform: uppercase;
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}

.page-faq .faq-totop::before {
  content: "↑";
  font-size: 13px;
}

.page-faq .faq-totop:hover,
.page-faq .faq-totop:focus-visible {
  color: var(--cyan);
  border-color: var(--line-strong);
  background: rgba(34, 224, 208, .08);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-card__summary {
    grid-template-columns: 52px minmax(0, 1fr) 24px;
    gap: 18px;
    padding: 20px 22px;
  }

  .page-faq .faq-card__body {
    padding: 0 22px 24px 92px;
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 768px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-help__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-help__foot {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-block__head {
    grid-template-columns: 76px minmax(0, 1fr);
    grid-template-rows: auto auto;
    column-gap: 22px;
    row-gap: 8px;
    max-width: none;
  }

  .page-faq .faq-block__no {
    grid-row: 1 / span 2;
    align-self: start;
    padding-top: 6px;
  }

  .page-faq .faq-block__note {
    max-width: 70ch;
  }

  .page-faq .faq-card__body {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 18px 34px;
  }

  .page-faq .faq-card__link {
    margin-bottom: 2px;
    white-space: nowrap;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-block__split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 360px);
    align-items: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-card,
  .page-faq .faq-card__sign::before,
  .page-faq .faq-card__sign::after,
  .page-faq .faq-card__idx,
  .page-faq .faq-card__link,
  .page-faq .faq-jump .pill,
  .page-faq .faq-help__link,
  .page-faq .faq-totop {
    transition: none;
  }
}