/* ============ 常见问答页面 ============ */

.page-faq {
  position: relative;
  padding: 34px 0 96px;
  overflow-x: clip;
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding-bottom: 12px;
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 30px;
  margin-top: 26px;
}

.page-faq .faq-hero__title {
  margin: 10px 0 0;
  font-weight: 200;
  letter-spacing: .015em;
  line-height: 1.16;
  color: var(--cream);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__facts li {
  padding: 7px 11px;
  border: 1px solid var(--edge);
  background: rgba(16, 28, 58, .72);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .045em;
  color: var(--mist);
}

.page-faq .faq-hero__facts b {
  font-weight: 500;
  color: var(--cyan);
}

.page-faq .faq-hero__media {
  position: relative;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--edge);
  background: linear-gradient(150deg, rgba(16, 28, 58, .95), rgba(27, 18, 54, .95));
}

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

.page-faq .faq-hero__plate {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-top: 14px;
  padding: 13px 16px;
  background: var(--cream);
  border-left: 4px solid var(--red);
  box-shadow: 0 14px 30px rgba(0, 0, 0, .34);
}

.page-faq .faq-hero__plate-num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--ink);
}

.page-faq .faq-hero__plate-label {
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(26, 18, 12, .74);
}

/* ---------- 分类索引 ---------- */

.page-faq .faq-index {
  margin-top: 50px;
  padding-top: 24px;
  border-top: 1px solid var(--edge);
}

.page-faq .faq-index__cap {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--red);
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 4px;
  border-bottom: 1px dashed var(--edge);
  color: var(--mist);
  font-size: 15px;
  text-decoration: none;
  transition: color var(--dur) ease, padding-left var(--dur) ease;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--red);
  transition: color var(--dur) ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--cyan);
  padding-left: 10px;
}

.page-faq .faq-index__link:hover .faq-index__num,
.page-faq .faq-index__link:focus-visible .faq-index__num {
  color: var(--cyan);
}

/* ---------- 问题分组 ---------- */

.page-faq .faq-group {
  padding-top: 68px;
  scroll-margin-top: 130px;
}

.page-faq .faq-group__head {
  max-width: 60ch;
  margin-bottom: 20px;
}

.page-faq .faq-group__title {
  margin: 10px 0 0;
  font-size: clamp(1.32rem, 3.1vw, 1.82rem);
  font-weight: 800;
  letter-spacing: .012em;
  line-height: 1.3;
  color: var(--cream);
}

.page-faq .faq-group__lede {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-group__cols {
  display: grid;
  gap: 30px;
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-item {
  scroll-margin-top: 130px;
  border-bottom: 1px solid var(--edge);
  transition: background-color var(--dur) ease;
}

.page-faq .faq-item[open] {
  background-color: rgba(27, 18, 54, .62);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 6px;
  cursor: pointer;
  list-style: none;
  color: var(--cream);
  transition: color var(--dur) ease;
}

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

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

.page-faq .faq-item__q::after {
  content: "+";
  flex: none;
  margin-left: auto;
  padding-left: 12px;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--red);
  transition: color var(--dur) ease;
}

.page-faq .faq-item[open] > .faq-item__q::after {
  content: "−";
  color: var(--cyan);
}

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-item__q:hover::after,
.page-faq .faq-item__q:focus-visible::after {
  color: var(--cyan);
}

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

.page-faq .faq-item__n {
  flex: 0 0 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--red);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: inherit;
}

.page-faq .faq-item__a {
  padding: 0 6px 24px 42px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-item__a p {
  max-width: 66ch;
  margin: 0 0 10px;
}

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

.page-faq .faq-item__a > p:first-child {
  color: var(--cream);
  font-weight: 500;
}

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 227, 208, .38);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 分档示意图 ---------- */

.page-faq .faq-scale {
  margin: 0;
  padding: 14px;
  border: 1px solid var(--edge);
  background: linear-gradient(180deg, rgba(16, 28, 58, .88), rgba(27, 18, 54, .88));
}

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

.page-faq .faq-scale__cap {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 联系区块 ---------- */

.page-faq .faq-ask {
  position: relative;
  margin-top: 82px;
  padding: 30px 22px 32px;
  border: 1px solid var(--edge);
  background: linear-gradient(135deg, rgba(16, 28, 58, .94), rgba(27, 18, 54, .94));
}

.page-faq .faq-ask::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), var(--orange));
}

.page-faq .faq-ask__grid {
  display: grid;
  gap: 26px;
}

.page-faq .faq-ask__title {
  margin: 10px 0 0;
  font-size: clamp(1.28rem, 3vw, 1.7rem);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: .012em;
  color: var(--cream);
}

.page-faq .faq-ask__lede {
  max-width: 46ch;
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-ask__list {
  margin: 0;
  padding: 0;
}

.page-faq .faq-ask__row {
  padding: 14px 0;
  border-top: 1px solid var(--edge);
}

.page-faq .faq-ask__row:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-ask__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--red);
}

.page-faq .faq-ask__body {
  margin: 8px 0 0;
}

.page-faq .faq-ask__value {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 15.5px;
  letter-spacing: .01em;
  color: var(--cyan);
  text-decoration: none;
  word-break: break-all;
  border-bottom: 1px solid rgba(79, 227, 208, .38);
}

.page-faq .faq-ask__value:hover,
.page-faq .faq-ask__value:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-ask__hint {
  display: block;
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

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

.page-faq .faq-ask__more-link {
  display: inline-block;
  padding-bottom: 2px;
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 61, .45);
}

.page-faq .faq-ask__more-link:hover,
.page-faq .faq-ask__more-link:focus-visible {
  border-bottom-color: var(--orange);
}

/* ---------- 响应式 ---------- */

@media (max-width: 520px) {
  .page-faq .faq-hero__plate {
    flex-direction: column;
    gap: 3px;
  }

  .page-faq .faq-item__a {
    padding-left: 34px;
  }
}

@media (min-width: 640px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 30px;
  }
}

@media (min-width: 900px) {
  .page-faq {
    padding-top: 46px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-hero__plate {
    position: absolute;
    right: -14px;
    bottom: -22px;
    max-width: 76%;
    margin-top: 0;
  }

  .page-faq .faq-hero__media {
    padding-bottom: 30px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-group__cols {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
    gap: 46px;
    align-items: start;
  }

  .page-faq .faq-scale {
    position: sticky;
    top: 128px;
  }

  .page-faq .faq-ask__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 40px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-item__q::after,
  .page-faq .faq-index__link,
  .page-faq .faq-index__num {
    transition: none;
  }
}