.page-faq {
  --faq-paper: var(--paper);
  --faq-ink: var(--paper-ink);
  --faq-rule: rgba(27, 20, 16, .16);
  --faq-body: #3A2E26;
  --faq-mark: #A8471A;
  --faq-mark-2: #1C6E5C;
}

.page-faq .faq-top-anchor {
  display: block;
  width: 0;
  height: 0;
  overflow: hidden;
}

/* ---------- 首屏框景 ---------- */

.page-faq .faq-hero {
  padding: 22px 0 0;
}

.page-faq .faq-hero__frame {
  position: relative;
  display: grid;
  gap: 28px;
  padding: 26px 20px 32px;
  border: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
}

.page-faq .faq-hero__slash {
  position: absolute;
  top: -60px;
  left: -14%;
  width: 128%;
  height: 300px;
  background: linear-gradient(
    100deg,
    rgba(47, 227, 192, .22) 0%,
    rgba(138, 107, 255, .2) 42%,
    rgba(255, 138, 61, .1) 68%,
    rgba(10, 15, 20, 0) 88%
  );
  transform: rotate(-9deg);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero__body,
.page-faq .faq-index {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 14px;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-size: clamp(29px, 7.4vw, 54px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: .025em;
  color: var(--title);
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

/* ---------- 分类索引 ---------- */

.page-faq .faq-index {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.page-faq .faq-index__cap {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--violet);
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 4px;
  border-bottom: 1px solid rgba(36, 52, 64, .75);
  color: var(--text);
  text-decoration: none;
  transition: color .18s var(--ease-out), border-color .18s var(--ease-out), transform .18s var(--ease-out);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--neon);
  border-bottom-color: var(--neon);
  transform: translateX(3px);
}

.page-faq .faq-index__num {
  flex: none;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--violet);
}

.page-faq .faq-index__label {
  font-size: 14px;
  line-height: 1.5;
}

/* ---------- 纸感长文区 ---------- */

.page-faq .faq-sheet {
  margin-top: 26px;
  padding: 34px 0 56px;
  background: var(--faq-paper);
  color: var(--faq-ink);
}

.page-faq .faq-sheet__lead {
  max-width: 58ch;
  padding-bottom: 6px;
}

.page-faq .faq-sheet__cap {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--faq-mark);
}

.page-faq .faq-sheet__lead h2 {
  margin: 8px 0 0;
  font-size: clamp(22px, 5.4vw, 32px);
  line-height: 1.3;
  letter-spacing: .02em;
  color: var(--faq-ink);
}

.page-faq .faq-sheet__intro {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-body);
}

/* ---------- 分类块 ---------- */

.page-faq .faq-cat {
  margin-top: 38px;
  padding-top: 20px;
  border-top: 2px solid var(--faq-ink);
  scroll-margin-top: 84px;
  display: grid;
  gap: 4px;
}

.page-faq .faq-cat__num {
  display: block;
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--faq-mark);
}

.page-faq .faq-cat__title {
  margin: 0;
  font-size: 21px;
  line-height: 1.35;
  letter-spacing: .02em;
  color: var(--faq-ink);
}

.page-faq .faq-cat__note {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: #6B5849;
}

.page-faq .faq-cat__head + .faq-list,
.page-faq .faq-cat__head + .faq-figure {
  margin-top: 12px;
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-list {
  display: grid;
}

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

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

.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 15px 2px;
  cursor: pointer;
  list-style: none;
  transition: color .18s var(--ease-out);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--mono);
  font-size: 17px;
  line-height: 1;
  color: var(--faq-mark);
  transition: transform .2s var(--ease-out);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  transform: translateY(-1px);
}

.page-faq .faq-item summary:hover .faq-item__q,
.page-faq .faq-item summary:focus-visible .faq-item__q {
  color: var(--faq-mark-2);
}

.page-faq .faq-item__code {
  flex: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--faq-mark-2);
}

.page-faq .faq-item__q {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: .01em;
  color: var(--faq-ink);
}

.page-faq .faq-item__a {
  padding: 0 2px 18px 34px;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--faq-body);
}

/* ---------- 纸感区配图 ---------- */

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

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--faq-rule);
}

.page-faq .faq-figure figcaption {
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.65;
  color: #6B5849;
}

/* ---------- 收尾联系区 ---------- */

.page-faq .faq-fallback {
  position: relative;
  padding: 42px 0 54px;
  background: var(--ink-900);
  overflow: hidden;
}

.page-faq .faq-fallback::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--neon) 0%, var(--violet) 52%, rgba(10, 15, 20, 0) 100%);
}

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

.page-faq .faq-fallback h2 {
  margin: 10px 0 0;
  font-size: clamp(22px, 5.6vw, 33px);
  line-height: 1.3;
  letter-spacing: .02em;
  color: var(--title);
}

.page-faq .faq-fallback__lead {
  margin: 14px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-need {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-need li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 12px 14px;
  background: var(--panel);
  border-left: 2px solid var(--neon);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-need li:nth-child(2) {
  border-left-color: var(--violet);
}

.page-faq .faq-need li:nth-child(3) {
  border-left-color: var(--orange);
}

.page-faq .faq-need__num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--orange);
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-totop {
  display: inline-block;
  margin-top: 26px;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--muted);
  text-decoration: none;
  transition: color .18s var(--ease-out), border-color .18s var(--ease-out);
}

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

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

.page-faq .faq-fallback__media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
}

.page-faq .faq-fallback__media figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 宽屏 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-hero__frame {
    padding: 34px 30px 38px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero__frame {
    grid-template-columns: minmax(0, 1.65fr) minmax(230px, .9fr);
    align-items: end;
    gap: 40px;
    padding: 44px 38px 46px;
  }

  .page-faq .faq-index {
    border-top: 0;
    border-left: 1px solid var(--line);
    padding-top: 0;
    padding-left: 24px;
  }

  .page-faq .faq-sheet {
    padding: 46px 0 72px;
  }

  .page-faq .faq-cat {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 0 34px;
    margin-top: 46px;
    padding-top: 24px;
  }

  .page-faq .faq-cat > .faq-cat__head {
    grid-column: 1;
    grid-row: 1;
    align-self: start;
  }

  .page-faq .faq-cat > .faq-list,
  .page-faq .faq-cat > .faq-figure {
    grid-column: 2;
    grid-row: 1;
  }

  .page-faq .faq-cat__head + .faq-list,
  .page-faq .faq-cat__head + .faq-figure {
    margin-top: -4px;
  }

  .page-faq .faq-cat__title {
    font-size: 23px;
  }

  .page-faq .faq-item summary {
    padding: 18px 2px;
  }

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

  .page-faq .faq-item__a {
    padding: 0 2px 22px 36px;
  }

  .page-faq .faq-fallback {
    padding: 56px 0 68px;
  }

  .page-faq .faq-fallback__grid {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 330px);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-figure {
    margin-top: 26px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__frame {
    padding: 52px 48px 54px;
  }

  .page-faq .faq-cat {
    grid-template-columns: 220px minmax(0, 1fr);
  }

  .page-faq .faq-item__code {
    font-size: 13px;
  }
}

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

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    transform: none;
  }
}