.page-faq {
  --faq-rail: 244px;
  --faq-gap: 60px;
  --faq-cut: 20px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: 40px;
  padding-bottom: 34px;
}

.page-faq .faq-title {
  max-width: 15em;
  margin: 0.45em 0 0;
}

.page-faq .faq-lede {
  max-width: 34em;
  margin-top: 18px;
}

.page-faq .faq-hero-line {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 26px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--sky-cyan);
}

.page-faq .faq-hero-line::before {
  content: "";
  flex: 0 0 40px;
  height: 1px;
  background: linear-gradient(90deg, var(--sky-pulse), rgba(255, 122, 47, 0));
}

/* ---------- 目录 + 正文 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  padding-bottom: 88px;
}

.page-faq .faq-index {
  padding-left: 18px;
  border-left: 1px solid var(--sky-hair);
}

.page-faq .faq-index-head {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--sky-muted);
}

.page-faq .faq-index-list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index-list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 6px 9px 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--sky-text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease-out, border-color 0.18s ease-out;
}

.page-faq .faq-index-list a:hover {
  color: var(--sky-title);
  border-bottom-color: var(--sky-line-violet);
}

.page-faq .faq-index-list a:focus-visible {
  outline: 2px solid var(--sky-pulse);
  outline-offset: 3px;
}

.page-faq .faq-idx {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--sky-nebula-lift);
}

.page-faq .faq-idx-text {
  min-width: 0;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-content {
  min-width: 0;
}

.page-faq .faq-block {
  padding-bottom: 40px;
  scroll-margin-top: calc(var(--header-h) + 32px);
}

.page-faq .faq-block + .faq-block {
  padding-top: 38px;
  border-top: 1px solid var(--sky-hair);
}

.page-faq .faq-block-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 20px;
}

.page-faq .faq-block-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--sky-pulse);
}

.page-faq .faq-block-head .sky-h2 {
  margin: 0;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border-top: 1px solid var(--sky-hair);
}

.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--sky-hair);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 19px 4px 19px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q-text {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: 0.01em;
  color: var(--sky-title);
  transition: color 0.18s ease-out;
}

.page-faq .faq-q:hover .faq-q-text {
  color: var(--sky-cyan);
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--sky-pulse);
  outline-offset: 2px;
}

.page-faq .faq-mark {
  position: relative;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  margin-top: 5px;
  border: 1px solid var(--sky-line-violet);
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: var(--sky-pulse);
  transition: transform 0.2s ease-out, opacity 0.2s ease-out;
}

.page-faq .faq-mark::before {
  left: 3px;
  right: 3px;
  top: 6.5px;
  height: 1.5px;
}

.page-faq .faq-mark::after {
  top: 3px;
  bottom: 3px;
  left: 6.5px;
  width: 1.5px;
}

.page-faq .faq-item[open] .faq-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item[open] .faq-mark {
  border-color: var(--sky-pulse);
}

.page-faq .faq-a {
  position: relative;
  padding: 0 0 24px 30px;
}

.page-faq .faq-a::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 4px;
  bottom: 28px;
  width: 1px;
  background: linear-gradient(180deg, var(--sky-nebula-lift), rgba(138, 120, 214, 0));
}

.page-faq .faq-a p {
  max-width: 34em;
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--sky-text);
}

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

.page-faq .faq-a a {
  color: var(--sky-cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .faq-a a:hover {
  color: var(--sky-title);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 18px 0 6px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--sky-hair);
  background: var(--sky-panel);
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, var(--faq-cut) 100%, 0 calc(100% - var(--faq-cut)));
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.65;
  letter-spacing: 0.02em;
  color: var(--sky-muted);
}

/* ---------- 联系方式面板 ---------- */
.page-faq .faq-contact {
  margin-top: 28px;
  padding: 26px 22px 24px;
  border: 1px solid var(--sky-hair);
  background:
    radial-gradient(120% 150% at 0% 0%, rgba(75, 58, 140, 0.45), rgba(16, 27, 54, 0) 64%),
    var(--sky-panel);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, var(--faq-cut) 100%, 0 calc(100% - var(--faq-cut)));
}

.page-faq .faq-contact-head {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--sky-cyan);
}

.page-faq .faq-contact-list {
  display: grid;
  gap: 12px;
  margin: 0;
}

.page-faq .faq-contact-row {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--sky-hair);
}

.page-faq .faq-contact-row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-contact-row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--sky-muted);
}

.page-faq .faq-contact-row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.03em;
  color: var(--sky-title);
  word-break: break-word;
}

.page-faq .faq-contact-note {
  max-width: 40em;
  margin: 18px 0 20px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--sky-muted);
}

.page-faq .faq-contact .sky-btn {
  display: inline-block;
}

/* ---------- 窄屏到中屏 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-contact {
    padding: 30px 30px 28px;
  }

  .page-faq .faq-contact-row {
    grid-template-columns: 92px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }

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

/* ---------- 桌面：编辑部目录双栏 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding-top: 56px;
    padding-bottom: 44px;
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

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

  .page-faq .faq-block {
    padding-bottom: 52px;
  }

  .page-faq .faq-block + .faq-block {
    padding-top: 48px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-a p {
    font-size: 15.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after,
  .page-faq .faq-q-text,
  .page-faq .faq-index-list a {
    transition: none;
  }
}