.page-faq {
  --faq-hair: rgba(16, 14, 12, .14);
  --faq-hair-dark: rgba(247, 244, 239, .18);
  --faq-body-text: rgba(16, 14, 12, .82);
  background: var(--yb-paper);
  color: var(--yb-ink);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 54px) 0 clamp(22px, 3.4vw, 38px);
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-hero__inner {
  position: relative;
}

.page-faq .faq-hero__slash {
  position: absolute;
  right: 0;
  top: clamp(40px, 7vw, 76px);
  width: clamp(110px, 22vw, 240px);
  height: 5px;
  background: linear-gradient(90deg, transparent, var(--yb-red) 35%, var(--yb-gold));
  transform: rotate(-12deg);
  transform-origin: right center;
  pointer-events: none;
}

.page-faq .faq-hero__title {
  margin: 10px 0 0;
  max-width: 17em;
  font-size: clamp(28px, 5.6vw, 50px);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.16;
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--faq-body-text);
}

.page-faq .faq-hero__facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px clamp(18px, 3.4vw, 40px);
  margin: clamp(22px, 3.2vw, 34px) 0 0;
  padding: 0;
}

.page-faq .faq-fact {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-left: 12px;
  border-left: 3px solid var(--yb-red);
}

.page-faq .faq-fact__num {
  font-family: var(--yb-font-mono);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--yb-ink);
}

.page-faq .faq-fact__label {
  font-size: 13px;
  color: var(--yb-muted);
}

/* ---------- 主体网格 ---------- */

.page-faq .faq-body {
  padding: clamp(28px, 5vw, 54px) 0 clamp(44px, 7vw, 92px);
}

.page-faq .faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3.2vw, 44px);
}

@media (min-width: 940px) {
  .page-faq .faq-grid {
    grid-template-columns: minmax(168px, 2.3fr) minmax(0, 9.7fr);
    align-items: start;
  }
}

.page-faq .faq-columns {
  min-width: 0;
}

/* ---------- 索引栏 ---------- */

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--yb-font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--yb-muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: block;
  padding: 7px 0 7px 13px;
  border-left: 2px solid transparent;
  font-size: 15px;
  line-height: 1.5;
  color: var(--faq-body-text);
  text-decoration: none;
  transition: color var(--yb-ease), border-color var(--yb-ease), padding-left var(--yb-ease);
}

.page-faq .faq-index__link:hover {
  color: var(--yb-red);
  border-left-color: var(--yb-gold);
  padding-left: 17px;
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--yb-red);
  outline-offset: 2px;
}

.page-faq .faq-index__link[aria-current="true"] {
  color: var(--yb-red);
  font-weight: 700;
  border-left-color: var(--yb-red);
}

@media (max-width: 939px) {
  .page-faq .faq-index {
    position: sticky;
    top: 0;
    z-index: 9;
    margin: 0 calc(-1 * var(--yb-gutter));
    padding: 9px var(--yb-gutter);
    background: rgba(247, 244, 239, .96);
    border-bottom: 1px solid var(--faq-hair);
  }

  .page-faq .faq-index__title {
    display: none;
  }

  .page-faq .faq-index__list {
    flex-direction: row;
    gap: 6px;
    overflow-x: auto;
    white-space: nowrap;
    scrollbar-width: none;
  }

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

  .page-faq .faq-index__link {
    flex: none;
    padding: 6px 13px;
    border-left: 0;
    border-bottom: 2px solid transparent;
    background: rgba(16, 14, 12, .05);
    font-size: 14px;
  }

  .page-faq .faq-index__link:hover {
    padding-left: 13px;
    border-left-color: transparent;
    border-bottom-color: var(--yb-gold);
  }

  .page-faq .faq-index__link[aria-current="true"] {
    background: var(--yb-red);
    color: var(--yb-snow);
    border-bottom-color: var(--yb-red-deep);
  }
}

/* ---------- 分组 ---------- */

.page-faq .faq-group {
  position: relative;
  padding-block: clamp(26px, 4vw, 44px);
  scroll-margin-top: 76px;
}

.page-faq .faq-group:first-of-type {
  padding-top: 0;
}

.page-faq .faq-group + .faq-group {
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-group + .faq-group::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 62px;
  height: 3px;
  background: var(--yb-red);
  transform: rotate(-12deg);
  transform-origin: left center;
}

.page-faq .faq-group__head {
  margin-bottom: clamp(10px, 1.6vw, 18px);
}

.page-faq .faq-group__eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--yb-font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--yb-gold-deep);
}

.page-faq .faq-group__eyebrow::after {
  content: "";
  flex: none;
  width: 56px;
  height: 1px;
  background: var(--yb-gold);
}

.page-faq .faq-group__title {
  margin: 7px 0 0;
  font-size: clamp(21px, 3vw, 28px);
  font-weight: 900;
  letter-spacing: -.015em;
  line-height: 1.25;
}

.page-faq .faq-group__desc {
  margin: 7px 0 0;
  max-width: 48ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--yb-muted);
}

/* ---------- 折叠问答 ---------- */

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

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

.page-faq .faq-item > summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--yb-ink);
  transition: color var(--yb-ease);
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--yb-red);
  outline-offset: 3px;
}

.page-faq .faq-item__num {
  flex: none;
  width: 30px;
  font-family: var(--yb-font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--yb-gold-deep);
  transition: color var(--yb-ease);
}

.page-faq .faq-item__text {
  position: relative;
  flex: 1;
  min-width: 0;
}

.page-faq .faq-item__text::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -3px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--yb-ease);
}

.page-faq .faq-item > summary::after {
  content: "+";
  flex: none;
  margin-left: 4px;
  font-family: var(--yb-font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--yb-muted);
  transition: color var(--yb-ease);
}

.page-faq .faq-item > summary:hover {
  color: var(--yb-red);
}

.page-faq .faq-item > summary:hover .faq-item__text::after {
  transform: scaleX(1);
}

.page-faq .faq-item[open] > summary {
  color: var(--yb-red);
}

.page-faq .faq-item[open] > summary::after {
  content: "–";
  color: var(--yb-red);
}

.page-faq .faq-item[open] .faq-item__num {
  color: var(--yb-red);
}

.page-faq .faq-item__a {
  padding: 0 0 20px 44px;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--faq-body-text);
}

.page-faq .faq-item__a p + p {
  margin-top: 8px;
}

.page-faq .faq-item__a a {
  color: var(--yb-red);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--yb-red-deep);
}

.page-faq .faq-mark {
  background: linear-gradient(transparent 58%, var(--yb-gold-soft) 58%, var(--yb-gold-soft) 94%, transparent 94%);
  padding: 0 2px;
  font-weight: 700;
}

@media (max-width: 560px) {
  .page-faq .faq-item > summary {
    gap: 10px;
    font-size: 15.5px;
    padding: 13px 0;
  }

  .page-faq .faq-item__num {
    width: 24px;
  }

  .page-faq .faq-item__a {
    padding-left: 0;
  }
}

/* ---------- 索引配图 ---------- */

.page-faq .faq-figure {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 520px;
}

.page-faq .faq-figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--yb-char);
  border-left: 4px solid var(--yb-gold);
}

.page-faq .faq-figure__cap {
  margin-top: 9px;
  font-family: var(--yb-font-mono);
  font-size: 11.5px;
  line-height: 1.65;
  letter-spacing: .01em;
  color: var(--yb-muted);
}

/* ---------- 结尾反馈面板 ---------- */

.page-faq .faq-group--end {
  padding-bottom: 0;
}

.page-faq .faq-outro {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr;
  background: var(--yb-ink);
  color: var(--yb-paper);
  clip-path: polygon(var(--yb-cut) 0, 100% 0, 100% calc(100% - var(--yb-cut)), calc(100% - var(--yb-cut)) 100%, 0 100%, 0 var(--yb-cut));
}

@media (min-width: 760px) {
  .page-faq .faq-outro {
    grid-template-columns: 1.15fr .85fr;
  }
}

.page-faq .faq-outro__body {
  padding: clamp(24px, 4vw, 44px);
}

.page-faq .faq-outro__eyebrow {
  margin: 0;
  font-family: var(--yb-font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--yb-gold);
}

.page-faq .faq-outro__title {
  margin: 8px 0 0;
  font-size: clamp(20px, 2.9vw, 27px);
  font-weight: 900;
  letter-spacing: -.015em;
  line-height: 1.3;
}

.page-faq .faq-outro__text {
  margin: 12px 0 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(247, 244, 239, .8);
}

.page-faq .faq-outro__contact {
  margin: 18px 0 0;
  display: grid;
  gap: 7px;
  font-family: var(--yb-font-mono);
  font-size: 13px;
  letter-spacing: .01em;
  color: var(--yb-gold-soft);
}

.page-faq .faq-outro__actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 0 var(--yb-cut) 0 var(--yb-cut);
  transition: background-color var(--yb-ease), border-color var(--yb-ease), color var(--yb-ease), transform var(--yb-ease);
}

.page-faq .faq-btn--primary {
  background: var(--yb-red);
  color: var(--yb-snow);
}

.page-faq .faq-btn--primary:hover {
  background: var(--yb-red-deep);
  transform: translateY(-1px);
}

.page-faq .faq-btn--ghost {
  border-color: var(--faq-hair-dark);
  color: var(--yb-paper);
}

.page-faq .faq-btn--ghost:hover {
  border-color: var(--yb-gold);
  color: var(--yb-gold-soft);
}

.page-faq .faq-btn:focus-visible {
  outline: 2px solid var(--yb-gold);
  outline-offset: 3px;
}

.page-faq .faq-outro__figure {
  margin: 0;
  position: relative;
  min-height: 210px;
}

.page-faq .faq-outro__img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 210px;
  object-fit: cover;
  opacity: .88;
}

@media (max-width: 759px) {
  .page-faq .faq-outro__figure {
    min-height: 180px;
    order: -1;
  }

  .page-faq .faq-outro__img {
    min-height: 180px;
  }
}