.page-faq {
  --faq-line: rgba(28, 21, 18, .14);
  --faq-paper: var(--paper-card);
  background: var(--paper);
  color: var(--ink-2);
  font-family: var(--font-body);
  padding-bottom: 56px;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 22px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--ink-2);
  opacity: .72;
}

.page-faq .breadcrumb a {
  color: var(--violet);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s ease;
}

.page-faq .breadcrumb a:hover {
  border-bottom-color: currentColor;
}

.page-faq .breadcrumb__sep {
  color: var(--red);
  opacity: .8;
}

/* ---------- 刊头 ---------- */
.page-faq .faq-mast {
  display: grid;
  gap: 26px;
  padding-top: 18px;
  padding-bottom: 30px;
}

.page-faq .faq-mast__lead h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 7.6vw, 50px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  margin: 12px 0 16px;
  color: var(--ink-2);
}

.page-faq .faq-mast__sum {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.78;
  max-width: 58ch;
  color: var(--ink-2);
  opacity: .82;
}

.page-faq .faq-mast__index {
  background: var(--faq-paper);
  border: 1px solid var(--faq-line);
  border-top: 3px solid var(--red);
  padding: 20px 20px 14px;
}

.page-faq .faq-mast__index-title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--red);
}

.page-faq .faq-index {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-index li {
  border-bottom: 1px dashed var(--faq-line);
}

.page-faq .faq-index li:last-child {
  border-bottom: 0;
}

.page-faq .faq-index a {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  grid-template-areas:
    "no label"
    "no hint";
  column-gap: 10px;
  padding: 13px 2px;
  text-decoration: none;
  color: var(--ink-2);
  transition: background-color .18s ease;
}

.page-faq .faq-index a:hover {
  background: rgba(124, 58, 237, .07);
}

.page-faq .faq-index__no {
  grid-area: no;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--violet);
  padding-top: 3px;
}

.page-faq .faq-index__label {
  grid-area: label;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.35;
}

.page-faq .faq-index__hint {
  grid-area: hint;
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-2);
  opacity: .62;
  margin-top: 3px;
}

/* ---------- 栏目头图 ---------- */
.page-faq .faq-plate {
  margin: 0;
  padding-bottom: 6px;
}

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

/* ---------- 筛选栏 ---------- */
.page-faq .faq-toolbar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 36px;
  padding-bottom: 6px;
}

.page-faq .faq-toolbar__label {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--ink-2);
  opacity: .62;
}

.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .filter-chip {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  padding: 8px 13px;
  border: 1px solid var(--faq-line);
  background: transparent;
  color: var(--ink-2);
  cursor: pointer;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}

.page-faq .filter-chip:hover {
  border-color: var(--violet);
  color: var(--violet);
}

.page-faq .filter-chip[aria-pressed="true"] {
  background: var(--violet);
  border-color: var(--violet);
  color: var(--paper);
}

/* ---------- 问答分区 ---------- */
.page-faq .faq-block {
  padding-top: 40px;
  padding-bottom: 40px;
  border-top: 1px dashed var(--faq-line);
}

.page-faq .faq-block__head {
  display: grid;
  gap: 6px;
  margin-bottom: 20px;
}

.page-faq .faq-block__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--red);
}

.page-faq .faq-block__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 5.4vw, 33px);
  line-height: 1.2;
  letter-spacing: -0.005em;
  color: var(--ink-2);
}

.page-faq .faq-block__sub {
  margin: 2px 0 0;
  font-size: 15px;
  line-height: 1.72;
  max-width: 56ch;
  color: var(--ink-2);
  opacity: .72;
}

/* ---------- 设备区块视觉 ---------- */
.page-faq .faq-device-visual {
  display: grid;
  gap: 16px;
  margin-bottom: 24px;
}

.page-faq .faq-tl-fig {
  margin: 0;
  background: var(--faq-paper);
  border: 1px solid var(--faq-line);
  padding: 14px 10px 6px;
}

.page-faq .faq-tl {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-tl__base {
  stroke: var(--grain);
  stroke-width: 6;
  stroke-linecap: round;
}

.page-faq .faq-tl__mid {
  fill: var(--faq-paper);
  stroke: var(--violet);
  stroke-width: 3;
}

.page-faq .faq-tl__u {
  fill: var(--violet);
  stroke: var(--violet);
  stroke-width: 3;
}

.page-faq .faq-tl__dot--end {
  fill: var(--orange);
  stroke: var(--orange);
  stroke-width: 3;
}

.page-faq .faq-tl__big {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  letter-spacing: .02em;
  fill: var(--ink-2);
}

.page-faq .faq-tl__lab {
  font-family: var(--font-mono);
  font-size: 14px;
  fill: var(--ink-2);
  opacity: .76;
}

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

.page-faq .faq-photo img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--faq-line);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 0;
}

.page-faq .qa {
  position: relative;
  border-bottom: 1px solid var(--faq-line);
  background: transparent;
  transition: background-color .2s ease, box-shadow .2s ease;
}

.page-faq .qa[open] {
  background: var(--faq-paper);
  box-shadow: inset 3px 0 0 var(--orange);
}

.page-faq .qa__head {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) 18px;
  align-items: start;
  gap: 10px;
  padding: 17px 8px 17px 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--ink-2);
}

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

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

.page-faq .qa__head:hover .qa__title {
  color: var(--violet);
}

.page-faq .qa__no {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--red);
  padding-top: 4px;
}

.page-faq .qa__title {
  transition: color .18s ease;
}

.page-faq .qa__sign {
  position: relative;
  width: 16px;
  height: 16px;
  justify-self: end;
  margin-top: 5px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--violet);
  transition: transform .2s ease;
}

.page-faq .qa__sign::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 2px;
}

.page-faq .qa__sign::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 2px;
}

.page-faq .qa[open] .qa__sign::after {
  transform: scaleY(0);
}

.page-faq .qa__body {
  padding: 0 10px 20px 4px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-2);
  opacity: .86;
}

.page-faq .qa__body p {
  margin: 0 0 11px;
}

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

.page-faq .qa__body a {
  color: var(--violet);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-faq .qa__body a:hover {
  color: var(--orange);
}

.page-faq .qa__next {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--faq-line);
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: .02em;
  opacity: 1;
}

/* ---------- 求助区 ---------- */
.page-faq .faq-help {
  display: grid;
  gap: 22px;
  padding-top: 48px;
  padding-bottom: 48px;
}

.page-faq .faq-help__box {
  background: var(--ink-2);
  color: var(--paper);
  padding: 28px 22px;
  border-left: 4px solid var(--orange);
}

.page-faq .faq-help__box .eyebrow {
  color: var(--gold);
  margin: 0;
}

.page-faq .faq-help__box h2 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 5vw, 30px);
  line-height: 1.2;
  color: var(--paper);
}

.page-faq .faq-help__box p {
  margin: 0 0 10px;
  font-size: 15.5px;
  line-height: 1.78;
  opacity: .88;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-faq .faq-help__side {
  background: var(--faq-paper);
  border: 1px solid var(--faq-line);
  padding: 20px 18px 8px;
}

.page-faq .faq-help__side h3 {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--red);
  font-weight: 400;
}

.page-faq .faq-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-links li {
  border-bottom: 1px dashed var(--faq-line);
}

.page-faq .faq-links li:last-child {
  border-bottom: 0;
}

.page-faq .faq-links a {
  display: block;
  padding: 12px 0;
  font-size: 14.5px;
  line-height: 1.6;
  text-decoration: none;
  color: var(--ink-2);
  transition: color .18s ease;
}

.page-faq .faq-links a:hover {
  color: var(--violet);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 640px) {
  .page-faq .qa__body {
    padding-left: 46px;
    padding-right: 18px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-mast {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, .85fr);
    gap: 46px;
    align-items: start;
    padding-top: 32px;
    padding-bottom: 44px;
  }

  .page-faq .faq-toolbar {
    flex-direction: row;
    align-items: center;
    gap: 22px;
    padding-top: 44px;
  }

  .page-faq .faq-block {
    padding-top: 54px;
    padding-bottom: 54px;
  }

  .page-faq .faq-block__head {
    grid-template-columns: 96px minmax(0, 1fr);
    grid-template-areas:
      "no h2"
      "no sub";
    column-gap: 18px;
    align-items: baseline;
    margin-bottom: 26px;
  }

  .page-faq .faq-block__no {
    grid-area: no;
    padding-top: 10px;
  }

  .page-faq .faq-block__head h2 {
    grid-area: h2;
  }

  .page-faq .faq-block__sub {
    grid-area: sub;
    margin-top: 8px;
  }

  .page-faq .faq-device-visual {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    gap: 20px;
    align-items: stretch;
    margin-bottom: 28px;
  }

  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
    gap: 30px;
    align-items: start;
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .page-faq .faq-help__box {
    padding: 36px 34px;
  }

  .page-faq .faq-help__side {
    padding: 24px 22px 10px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-mast {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, .8fr);
    gap: 56px;
  }

  .page-faq .qa__head {
    padding: 20px 10px 20px 6px;
    font-size: 17.5px;
  }

  .page-faq .qa__body {
    padding-left: 48px;
    padding-right: 24px;
    font-size: 16px;
  }
}