.page-faq {
  --faq-soft: rgba(122, 92, 245, .16);
  --faq-edge: rgba(122, 92, 245, .42);
  padding: 1.75rem 0 4.5rem;
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: 2rem;
  margin: 1.5rem 0 3rem;
}

.page-faq .faq-hero__copy h1 {
  margin: .55rem 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.85rem, 4.2vw, 3rem);
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-faq .faq-hero__lead {
  margin: 1.1rem 0 0;
  max-width: 34em;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem 1.6rem;
  margin: 1.5rem 0 0;
  padding: 1rem 1.15rem;
  list-style: none;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(120deg, rgba(20, 26, 56, .85), rgba(11, 16, 36, .7));
  color: var(--muted);
  font-size: .86rem;
}

.page-faq .faq-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: .4rem;
}

.page-faq .faq-hero__meta b {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--gold);
  letter-spacing: .02em;
}

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

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

/* 主体双栏 */
.page-faq .faq-shell {
  display: grid;
  gap: 2rem;
}

/* 分组索引 */
.page-faq .faq-rail {
  align-self: start;
}

.page-faq .faq-rail__note {
  margin: 0 0 .6rem;
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: .4rem;
  margin: 0;
  padding: 0 0 .35rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-rail__list a {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .45rem .8rem;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(20, 26, 56, .55);
  color: var(--muted);
  font-size: .83rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color .16s var(--ease), background .16s var(--ease), border-color .16s var(--ease);
}

.page-faq .faq-rail__list a .mono {
  font-size: .7rem;
  color: var(--gold);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--ink);
  background: var(--faq-soft);
  border-color: var(--faq-edge);
}

/* 分组通用 */
.page-faq .faq-group {
  margin-bottom: 2.75rem;
  scroll-margin-top: 2rem;
}

.page-faq .faq-group__head {
  margin-bottom: 1.15rem;
}

.page-faq .faq-group__title {
  margin: .4rem 0 .5rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.3rem, 2.6vw, 1.8rem);
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .faq-group__lead {
  margin: 0;
  max-width: 36em;
  color: var(--muted);
  font-size: .93rem;
  line-height: 1.75;
}

/* 问答条 */
.page-faq .qa {
  margin-bottom: .55rem;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--orbit);
  overflow: hidden;
  transition: border-color .16s var(--ease), background .16s var(--ease);
}

.page-faq .qa:hover {
  border-color: var(--faq-edge);
}

.page-faq .qa[open] {
  border-color: var(--faq-edge);
  background: linear-gradient(150deg, rgba(20, 26, 56, 1), rgba(11, 16, 36, .92));
}

.page-faq .qa__q {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: .95rem 1.05rem;
  cursor: pointer;
  list-style: none;
  color: var(--ink);
  font-size: .97rem;
  font-weight: 500;
  line-height: 1.55;
}

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

.page-faq .qa__num {
  flex: none;
  font-size: .74rem;
  color: var(--gold);
  letter-spacing: .04em;
}

.page-faq .qa__text {
  flex: 1 1 auto;
}

.page-faq .qa__mark {
  position: relative;
  flex: none;
  width: 1.15rem;
  height: 1.15rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: border-color .16s var(--ease);
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--cyan);
  transform: translate(-50%, -50%);
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.page-faq .qa__mark::before {
  width: .58rem;
  height: 1.5px;
}

.page-faq .qa__mark::after {
  width: 1.5px;
  height: .58rem;
}

.page-faq .qa[open] .qa__mark {
  border-color: var(--cyan);
}

.page-faq .qa[open] .qa__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 1.05rem 1.05rem;
  color: var(--muted);
  font-size: .91rem;
  line-height: 1.8;
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 40em;
}

.page-faq .qa__next {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  margin-top: .7rem;
  color: var(--violet);
  font-size: .84rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.page-faq .qa__next::after {
  content: "→";
}

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

/* 宽松引导区 */
.page-faq .faq-breather {
  position: relative;
  margin: 0 0 2.75rem;
  padding: 1.7rem 1.5rem 1.8rem;
  border: 1px solid var(--faq-edge);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 150% at 90% -10%, rgba(33, 230, 193, .16), transparent 58%),
    linear-gradient(155deg, rgba(122, 92, 245, .2), rgba(20, 26, 56, .95));
  overflow: hidden;
}

.page-faq .faq-breather__title {
  margin: .45rem 0 .55rem;
  font-family: var(--font-head);
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .faq-breather__text {
  margin: 0 0 1.15rem;
  max-width: 40em;
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.78;
}

/* 适配信息图与清单 */
.page-faq .faq-adapt {
  margin: 1.6rem 0 0;
}

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

.page-faq .faq-specs {
  display: grid;
  gap: .6rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-specs li {
  padding: .85rem .95rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(11, 16, 36, .72);
  color: var(--muted);
  font-size: .87rem;
  line-height: 1.65;
}

.page-faq .faq-specs b {
  display: block;
  margin-bottom: .3rem;
  font-family: var(--font-mono);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--cyan);
}

/* 邮箱复制条 */
.page-faq .faq-copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem 1rem;
  margin-top: 1.15rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(120deg, rgba(20, 26, 56, .9), rgba(11, 16, 36, .78));
}

.page-faq .faq-copy__label {
  margin: 0;
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-copy__value {
  margin: 0;
  color: var(--gold);
  font-size: .9rem;
  word-break: break-all;
}

.page-faq .faq-copy .copy-btn {
  margin-left: auto;
}

/* 收尾 */
.page-faq .faq-outro {
  margin: 1.75rem 0 0;
  max-width: 42em;
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.85;
}

.page-faq .faq-outro a {
  color: var(--violet);
  text-decoration: none;
  border-bottom: 1px solid rgba(122, 92, 245, .45);
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

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

/* 焦点态 */
.page-faq a:focus-visible,
.page-faq summary:focus-visible,
.page-faq button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* 响应式 */
@media (min-width: 640px) {
  .page-faq .faq-specs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .qa__q {
    padding: 1rem 1.25rem;
  }

  .page-faq .qa__a {
    padding: 0 1.25rem 1.15rem;
  }
}

@media (min-width: 960px) {
  .page-faq {
    padding-top: 2.25rem;
  }

  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: center;
    gap: 2.75rem;
    margin-bottom: 3.75rem;
  }

  .page-faq .faq-shell {
    grid-template-columns: 12rem minmax(0, 1fr);
    gap: 2.75rem;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 2rem;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: .15rem;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-rail__list a {
    border-color: transparent;
    background: transparent;
    border-radius: 12px;
    padding: .5rem .7rem;
  }

  .page-faq .faq-rail__list a:hover,
  .page-faq .faq-rail__list a:focus-visible {
    background: var(--faq-soft);
    border-color: transparent;
  }

  .page-faq .faq-breather {
    padding: 2rem 2.1rem 2.1rem;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-specs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__mark,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .qa__next,
  .page-faq .faq-rail__list a,
  .page-faq .faq-outro a {
    transition-duration: .01ms;
  }
}
</PAGE_CSS>>