.page-faq {
  --faq-radius: 14px;
  --faq-ease: cubic-bezier(.22, .68, .32, 1);
  position: relative;
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(52px, 8vw, 104px);
}

.page-faq .crumbs {
  padding-top: clamp(16px, 3vw, 28px);
}

.page-faq .link-inline {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 232, 198, .38);
  transition: border-color .2s ease, color .2s ease;
}

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

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4.4vw, 48px) 0 clamp(26px, 4.6vw, 52px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -22%;
  right: -18%;
  width: min(620px, 74vw);
  height: min(460px, 58vw);
  background: radial-gradient(closest-side, rgba(43, 232, 198, .17), rgba(43, 232, 198, 0) 72%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(24px, 3.6vw, 44px);
  align-items: end;
}

.page-faq .faq-hero__lead .eyebrow {
  display: inline-block;
  margin: 0 0 clamp(10px, 1.6vw, 16px);
  color: var(--gold);
}

.page-faq .faq-hero h1 {
  margin: 0 0 clamp(14px, 2.2vw, 22px);
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(31px, 6vw, 60px);
  line-height: 1.1;
  letter-spacing: -.025em;
  max-width: 18ch;
}

.page-faq .faq-hero__desc {
  margin: 0;
  max-width: 46ch;
  color: var(--muted);
  font-size: clamp(14.5px, 1.7vw, 16.5px);
  line-height: 1.9;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 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(--faq-radius);
  overflow: hidden;
}

.page-faq .faq-hero__facts li {
  background: var(--glass-soft);
  padding: clamp(13px, 2vw, 18px) clamp(12px, 1.8vw, 18px);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-hero__num {
  font-family: var(--font-mono);
  font-size: clamp(23px, 3.6vw, 32px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-faq .faq-hero__unit {
  font-size: .48em;
  margin-left: 2px;
  color: var(--muted);
}

.page-faq .faq-hero__lbl {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--muted);
}

/* ---------- 分组标签 ---------- */

.page-faq .faq-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  padding: 4px 0 16px;
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
}

.page-faq .faq-tab {
  flex: 0 0 auto;
  scroll-snap-align: start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--glass-soft);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.2;
  white-space: nowrap;
  text-decoration: none;
  transition: color .22s ease, border-color .22s ease, background .22s ease;
}

.page-faq .faq-tab:hover {
  color: var(--paper);
  border-color: var(--line-cyan);
  background: var(--glass-bg);
}

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

.page-faq .faq-tab__no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  opacity: .85;
}

/* ---------- 分组 ---------- */

.page-faq .faq-group {
  padding-top: clamp(36px, 6vw, 70px);
  scroll-margin-top: 128px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: clamp(12px, 2vw, 20px);
  padding-bottom: clamp(10px, 1.6vw, 16px);
  border-bottom: 1px solid var(--line-cyan);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: clamp(28px, 7vw, 52px);
  line-height: .9;
  letter-spacing: -.04em;
  color: var(--cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(19px, 3.1vw, 27px);
  line-height: 1.38;
  color: var(--paper);
  letter-spacing: .005em;
}

.page-faq .faq-group__intro {
  margin: clamp(12px, 1.8vw, 18px) 0 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.9;
}

.page-faq .faq-group__body {
  margin-top: clamp(18px, 2.6vw, 28px);
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-faq .faq-group__list {
  margin-top: clamp(16px, 2.4vw, 26px);
}

.page-faq .faq-group__body .faq-group__list {
  margin-top: 0;
}

/* ---------- 图片 ---------- */

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

.page-faq .faq-figure .media {
  border-radius: var(--faq-radius);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

.page-faq .faq-figure .media__caption {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 手风琴 ---------- */

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

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  list-style: none;
  cursor: pointer;
  padding: clamp(14px, 2.2vw, 19px) 0;
  font-family: var(--font-sans);
  font-size: clamp(15.5px, 1.75vw, 17px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  transition: color .2s ease;
}

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

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

.page-faq .qa__q:hover {
  color: var(--cyan);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-faq .qa__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--muted);
  padding-top: 4px;
}

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--muted);
  transition: color .24s ease;
}

.page-faq .qa[open] .qa__q::after {
  content: "–";
  color: var(--cyan);
}

.page-faq .qa__a {
  margin: 0 0 clamp(15px, 2.2vw, 22px);
  padding: 2px 0 4px clamp(15px, 2.4vw, 26px);
  border-left: 2px solid var(--line-cyan);
  max-width: 68ch;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.92;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
}

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

.page-faq .qa__a strong {
  color: var(--gold);
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: .96em;
}

.page-faq .qa__a .k {
  color: var(--paper);
  border-bottom: 1px solid rgba(255, 194, 75, .5);
  padding-bottom: 1px;
}

.page-faq .qa[open] .qa__a {
  animation: faq-reveal .28s var(--faq-ease) both;
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 结尾指引 ---------- */

.page-faq .faq-next {
  margin-top: clamp(44px, 7vw, 86px);
  padding: clamp(24px, 4vw, 42px);
  border-radius: var(--faq-radius);
  border: 1px solid var(--line);
  background:
    linear-gradient(142deg, rgba(16, 28, 58, .78) 0%, rgba(11, 43, 39, .62) 100%);
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-faq .faq-next__head .eyebrow {
  display: inline-block;
  margin: 0 0 8px;
  color: var(--gold);
}

.page-faq .faq-next__title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1.36;
  color: var(--paper);
}

.page-faq .faq-next__desc {
  margin: 0;
  max-width: 58ch;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.9;
}

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

.page-faq .faq-next__links a {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: clamp(14px, 2vw, 18px) clamp(14px, 2vw, 20px);
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(6, 18, 37, .48);
  text-decoration: none;
  transition: border-color .22s ease, background .22s ease, transform .22s var(--faq-ease);
}

.page-faq .faq-next__links a:hover,
.page-faq .faq-next__links a:focus-visible {
  border-color: var(--line-cyan);
  background: rgba(43, 232, 198, .07);
  transform: translateY(-2px);
}

.page-faq .faq-next__link-t {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--paper);
}

.page-faq .faq-next__link-d {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-group__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
    align-items: start;
  }

  .page-faq .faq-group__list {
    margin-top: 0;
  }

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

@media (min-width: 940px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  }

  .page-faq .faq-next {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.35fr);
    align-items: center;
  }

  .page-faq .faq-figure--wide .media {
    aspect-ratio: 21 / 8;
  }

  .page-faq .faq-figure--wide img {
    height: 100%;
  }
}

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

  .page-faq .qa__q {
    gap: 9px;
  }

  .page-faq .qa__a {
    padding-left: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa[open] .qa__a {
    animation: none;
  }

  .page-faq .faq-next__links a {
    transition: none;
  }

  .page-faq .faq-next__links a:hover {
    transform: none;
  }
}