.page-faq {
  --faq-answer-lh: 1.8;
  display: block;
  padding-bottom: 72px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 30px;
  padding: 26px 0 40px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(32px, 8vw, 62px);
  font-weight: 250;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 44ch;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--text);
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.page-faq .faq-hero__media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  aspect-ratio: 3 / 2;
  background:
    linear-gradient(140deg, rgba(47, 243, 200, 0.14) 0%, rgba(11, 31, 26, 0) 62%),
    repeating-linear-gradient(0deg, var(--line-soft) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, var(--line-soft) 0 1px, transparent 1px 24px),
    var(--ink-2);
}

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

/* ---------- 分组胶囊标签 ---------- */
.page-faq .faq-tabs {
  display: flex;
  gap: 10px;
  margin: 26px 0 6px;
  padding-bottom: 4px;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-tabs__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--cyan-a24);
  border-radius: var(--pill);
  color: var(--cyan-soft);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-faq .faq-tabs__link:hover,
.page-faq .faq-tabs__link:focus-visible {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}

/* ---------- 右侧圆点导航 ---------- */
.page-faq .faq-rail {
  display: none;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding: 46px 0 6px;
  scroll-margin-top: 90px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 16px;
  align-items: baseline;
  margin-bottom: 22px;
}

.page-faq .faq-group__num {
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(23px, 5vw, 34px);
  font-weight: 300;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 资源组配图 ---------- */
.page-faq .faq-asset-figure {
  margin: 0 0 26px;
}

.page-faq .faq-asset-figure .figure__media {
  border-radius: var(--r-lg);
}

/* ---------- 问答列表 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--line-soft);
}

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

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 17px 2px;
  cursor: pointer;
  list-style: none;
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  background: rgba(47, 243, 200, 0.05);
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  min-width: 30px;
  padding-top: 4px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  font-size: 16px;
  line-height: 1.62;
  color: var(--text);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--cyan-a24);
  border-radius: 50%;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--cyan);
  transform: translate(-50%, -50%);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-item__mark::before {
  width: 9px;
  height: 1.5px;
}

.page-faq .faq-item__mark::after {
  width: 1.5px;
  height: 9px;
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(45deg);
  border-color: var(--orange);
}

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

.page-faq .faq-item__body {
  padding: 0 0 20px;
  background: linear-gradient(180deg, rgba(47, 243, 200, 0.04), rgba(47, 243, 200, 0));
}

.page-faq .faq-item__answer {
  margin: 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  max-width: 66ch;
  font-size: 15.5px;
  line-height: var(--faq-answer-lh);
  color: var(--text);
}

.page-faq .faq-item__answer a {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-color: var(--cyan-a24);
  text-underline-offset: 3px;
}

.page-faq .faq-item__answer a:hover,
.page-faq .faq-item__answer a:focus-visible {
  text-decoration-color: var(--cyan);
}

/* ---------- 联系通道 ---------- */
.page-faq .faq-group--tail {
  padding-top: 54px;
}

.page-faq .faq-contactbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 34px;
  padding: 24px 24px 22px;
  border: 1px solid var(--cyan-a24);
  border-radius: var(--r-lg);
  background:
    linear-gradient(120deg, rgba(47, 243, 200, 0.12) 0%, rgba(255, 138, 61, 0.1) 100%),
    var(--ink-2);
}

.page-faq .faq-contactbar__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-contactbar__label {
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-faq .faq-contactbar__value {
  font-size: 15px;
  font-weight: 600;
  color: var(--cyan);
  word-break: break-all;
}

.page-faq .faq-contactbar__note {
  flex: 1 1 100%;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-tail {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 平板起 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-item > summary {
    gap: 18px;
    padding: 19px 6px;
  }

  .page-faq .faq-item__q {
    font-size: 16.5px;
  }

  .page-faq .faq-item__answer {
    margin-left: 48px;
    font-size: 16px;
  }

  .page-faq .faq-contactbar {
    border-radius: var(--pill);
    padding: 22px 34px;
  }
}

/* ---------- 桌面起 ---------- */
@media (min-width: 940px) {
  .page-faq {
    padding-bottom: 108px;
  }

  .page-faq .faq-hero {
    grid-template-columns: 1.04fr 0.96fr;
    align-items: center;
    gap: 54px;
    padding: 42px 0 64px;
  }

  .page-faq .faq-hero__lede {
    font-size: 17px;
  }

  .page-faq .faq-tabs {
    margin-top: 30px;
  }

  .page-faq .faq-group {
    padding: 68px 0 8px;
  }

  .page-faq .faq-group__head {
    margin-bottom: 26px;
  }

  .page-faq .faq-list {
    padding-left: 4px;
  }
}

/* ---------- 宽屏圆点导航 ---------- */
@media (min-width: 1240px) {
  .page-faq .faq-rail {
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: fixed;
    right: 26px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 6;
  }

  .page-faq .faq-rail__dot {
    display: block;
    width: 10px;
    height: 10px;
    border: 1px solid var(--cyan-a24);
    border-radius: 50%;
    background: transparent;
    transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease),
      transform var(--dur) var(--ease);
  }

  .page-faq .faq-rail__dot:hover,
  .page-faq .faq-rail__dot:focus-visible {
    background: var(--orange);
    border-color: var(--orange);
    transform: scale(1.35);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__mark,
  .page-faq .faq-tabs__link,
  .page-faq .faq-rail__dot,
  .page-faq .faq-item > summary {
    transition: none;
  }
}