/* ===== 使用指南 /guide/ ===== */
.page-faq{
  --faq-rail:236px;
  --faq-cut:16px;
  background: var(--ink);
  color: var(--cream-80);
  font-family: var(--font-body);
  line-height: 1.75;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  position: relative;
  overflow: hidden;
  padding: 34px 0 54px;
  background:
    radial-gradient(120% 92% at 92% 0%, rgba(200, 52, 43, .22), transparent 56%),
    linear-gradient(180deg, var(--ink-3) 0%, var(--ink) 80%);
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-hero::before{
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 88px 88px;
  opacity: .5;
  pointer-events: none;
}
.page-faq .faq-hero::after{
  content: "";
  position: absolute;
  right: -60px;
  bottom: -100px;
  width: 460px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-soft), transparent);
  transform: rotate(-32deg);
  pointer-events: none;
}
.page-faq .faq-hero > .wrap{
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero .breadcrumb{
  font-family: var(--font-index);
  font-size: .74rem;
  letter-spacing: .08em;
}
.page-faq .faq-hero__split{
  display: grid;
  gap: 30px;
  margin-top: 26px;
  align-items: center;
}
@media (min-width: 900px){
  .page-faq .faq-hero__split{
    grid-template-columns: 1.12fr .88fr;
    gap: 52px;
    align-items: center;
  }
}
.page-faq .faq-hero__title{
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6.4vw, 3.9rem);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--cream);
  margin: .16em 0 .5em;
}
.page-faq .faq-hero__lead{
  max-width: 52ch;
  margin: 0 0 22px;
  font-size: clamp(.96rem, 2.3vw, 1.08rem);
  color: var(--cream-80);
}
.page-faq .faq-hero__chips{
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-index);
  font-size: .76rem;
  letter-spacing: .07em;
  color: var(--cream-60);
}
.page-faq .faq-hero__chips .mono{
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--gold);
  margin-right: .45em;
}
.page-faq .faq-hero__fig{
  margin: 0;
  background: var(--ink-2);
  border: 1px solid var(--line-strong);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}
.page-faq .faq-hero__fig .figure__img{
  display: block;
  overflow: hidden;
}
.page-faq .faq-hero__fig img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.9) contrast(1.05);
}
.page-faq .faq-hero__fig .figure__cap{
  display: block;
  padding: 11px 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-index);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--cream-60);
}

/* ---------- 正文骨架 ---------- */
.page-faq .faq-body{
  padding: 46px 0 76px;
  background: var(--ink);
}
.page-faq .faq-layout{
  display: grid;
  gap: 30px;
}
@media (min-width: 1024px){
  .page-faq .faq-layout{
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
}

/* ---------- 章节索引 ---------- */
.page-faq .faq-idx{
  font-family: var(--font-index);
  border-left: 1px solid var(--line);
  padding-left: 14px;
}
@media (min-width: 1024px){
  .page-faq .faq-idx{
    position: sticky;
    top: calc(var(--hdr-h) + 22px);
  }
}
.page-faq .faq-idx__label{
  margin: 0 0 12px;
  font-size: .66rem;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--stone);
}
.page-faq .faq-idx__list{
  display: flex;
  gap: 0 4px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}
.page-faq .faq-idx__list::-webkit-scrollbar{ display: none; }
@media (min-width: 1024px){
  .page-faq .faq-idx__list{
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }
}
.page-faq .faq-idx__link{
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 10px 8px 0;
  white-space: nowrap;
  font-size: .84rem;
  color: var(--cream-60);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}
.page-faq .faq-idx__link .mono{
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 600;
  color: var(--stone);
  transition: color var(--ease);
}
.page-faq .faq-idx__link:hover{ color: var(--gold); }
.page-faq .faq-idx__link:hover .mono{ color: var(--gold); }
.page-faq .faq-idx__link[data-active="true"]{
  color: var(--cream);
  border-bottom-color: var(--gold-soft);
}
.page-faq .faq-idx__link[data-active="true"] .mono{ color: var(--red); }

/* ---------- 分组 ---------- */
.page-faq .faq-groups{
  display: flex;
  flex-direction: column;
  gap: 42px;
  min-width: 0;
}
@media (min-width: 1024px){
  .page-faq .faq-groups{ gap: 56px; }
}
.page-faq .faq-group{
  scroll-margin-top: calc(var(--hdr-h) + 18px);
  padding-top: 26px;
  border-top: 1px solid var(--line-strong);
  min-width: 0;
}
.page-faq .faq-group__head{
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  align-items: baseline;
  margin-bottom: 22px;
}
.page-faq .faq-group__no{
  font-family: var(--font-mono);
  font-size: 1.32rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--gold);
  padding-top: 4px;
}
.page-faq .faq-group__title{
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 4.2vw, 1.86rem);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--cream);
}
.page-faq .faq-group__note{
  grid-column: 2;
  margin: 0;
  font-size: .85rem;
  color: var(--cream-60);
}

/* ---------- 三步流程 ---------- */
.page-faq .faq-steps{
  display: grid;
  gap: 12px;
  margin: 0 0 26px;
}
@media (min-width: 760px){
  .page-faq .faq-steps{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.page-faq .faq-step{
  position: relative;
  padding: 20px 18px 18px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
  transition: border-color var(--ease);
}
.page-faq .faq-step::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--gold);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform var(--ease);
}
.page-faq .faq-step:hover,
.page-faq .faq-step:focus-within{
  border-color: var(--gold-soft);
}
.page-faq .faq-step:hover::before,
.page-faq .faq-step:focus-within::before{
  transform: scaleY(1);
}
.page-faq .faq-step__no{
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--gold);
}
.page-faq .faq-step__icon{
  display: block;
  width: 28px;
  height: 28px;
  margin-bottom: 12px;
  color: var(--jade);
}
.page-faq .faq-step:hover .faq-step__icon{ color: var(--amber); }
.page-faq .faq-step__title{
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.04rem;
  line-height: 1.35;
  color: var(--cream);
}
.page-faq .faq-step__desc{
  display: block;
  font-size: .82rem;
  line-height: 1.7;
  color: var(--cream-60);
}
.page-faq .faq-step__tool{
  display: block;
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-index);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--stone);
  transition: color var(--ease);
}
.page-faq .faq-step:hover .faq-step__tool{ color: var(--gold); }

/* ---------- 问答折叠 ---------- */
.page-faq .faq-acc{
  display: flex;
  flex-direction: column;
  margin: 0 0 20px;
}
.page-faq .faq-item{
  border-bottom: 1px solid var(--line);
  border-left: 2px solid transparent;
  transition: border-left-color var(--ease), background-color var(--ease);
}
.page-faq .faq-item[open]{
  border-left-color: var(--gold);
  background: linear-gradient(90deg, rgba(217, 164, 65, .07), transparent 62%);
}
.page-faq .faq-item summary{
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 10px 15px 14px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-index);
  font-size: .95rem;
  line-height: 1.6;
  color: var(--cream-80);
  transition: color var(--ease);
}
.page-faq .faq-item summary::-webkit-details-marker{ display: none; }
.page-faq .faq-item summary:hover{ color: var(--cream); }
.page-faq .faq-item[open] summary{ color: var(--red); }
.page-faq .faq-item__q{ flex: 1 1 auto; }
.page-faq .faq-item__mark{
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 7px;
}
.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after{
  content: "";
  position: absolute;
  background: var(--gold);
  transition: transform var(--ease), opacity var(--ease);
}
.page-faq .faq-item__mark::before{ left: 0; top: 6px; width: 14px; height: 2px; }
.page-faq .faq-item__mark::after{ left: 6px; top: 0; width: 2px; height: 14px; }
.page-faq .faq-item[open] .faq-item__mark::after{
  transform: scaleY(0);
  opacity: 0;
}
.page-faq .faq-item__body{
  padding: 0 14px 20px 28px;
  font-size: .89rem;
  color: var(--cream-60);
}
.page-faq .faq-item__body p{ margin: 0 0 .72em; }
.page-faq .faq-item__body p:last-child{ margin-bottom: 0; }
.page-faq .faq-item__body a{
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.page-faq .faq-item__body a:hover{ color: var(--cream); }

/* ---------- 浅色行动卡 ---------- */
.page-faq .faq-aside-card{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  padding: 14px 18px;
  background: var(--cream);
  color: var(--ink);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  font-family: var(--font-index);
  font-size: .82rem;
}
.page-faq .faq-aside-card__label{
  font-size: .66rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--clay);
}
.page-faq .faq-aside-card__txt{
  flex: 1 1 220px;
  color: rgba(20, 17, 15, .82);
  line-height: 1.65;
}
.page-faq .faq-aside-card a{
  flex: none;
  color: var(--red);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
  transition: color var(--ease);
}
.page-faq .faq-aside-card a:hover{ color: var(--ink); }

/* ---------- 统计章节双栏 ---------- */
.page-faq .faq-stats-grid{
  display: grid;
  gap: 24px;
  margin-bottom: 20px;
}
@media (min-width: 900px){
  .page-faq .faq-stats-grid{
    grid-template-columns: minmax(0, 1fr) 264px;
    gap: 32px;
    align-items: start;
  }
}
.page-faq .faq-acc--solo{ margin-bottom: 0; }
.page-faq .faq-stats-side{
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}
.page-faq .faq-stats-fig{
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-2);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}
.page-faq .faq-stats-fig .figure__img{
  display: block;
  overflow: hidden;
}
.page-faq .faq-stats-fig img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.88) contrast(1.04);
}
.page-faq .faq-stats-fig .figure__cap{
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-index);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--cream-60);
}
.page-faq .faq-metrics{
  padding: 16px 16px 14px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-left: 2px solid var(--jade);
}
.page-faq .faq-metrics__title{
  margin: 0 0 12px;
  font-family: var(--font-index);
  font-size: .74rem;
  letter-spacing: .12em;
  color: var(--cream);
}
.page-faq .faq-metrics__list{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-metrics__list li{
  display: flex;
  align-items: baseline;
  gap: 7px;
  font-family: var(--font-index);
  font-size: .78rem;
  color: var(--cream-60);
}
.page-faq .faq-metrics__list .mono{
  font-family: var(--font-mono);
  font-size: .66rem;
  font-weight: 600;
  color: var(--gold);
}

/* ---------- 联系方式 ---------- */
.page-faq .faq-contact{
  display: grid;
  gap: 1px;
  margin: 0 0 24px;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}
.page-faq .faq-contact__row{
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 14px;
  padding: 12px 16px;
  background: var(--ink-2);
  font-size: .85rem;
}
.page-faq .faq-contact__k{
  font-family: var(--font-index);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--stone);
}
.page-faq .faq-contact__v{
  color: var(--cream);
  word-break: break-word;
  overflow-wrap: anywhere;
}
.page-faq .faq-contact__v.mono{
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .01em;
}

/* ---------- 桌面微调 ---------- */
@media (min-width: 1024px){
  .page-faq .faq-hero{ padding: 46px 0 64px; }
  .page-faq .faq-body{ padding: 56px 0 96px; }
  .page-faq .faq-group{ padding-top: 30px; }
  .page-faq .faq-item summary{ font-size: 1rem; }
  .page-faq .faq-item__body{ font-size: .92rem; padding-left: 30px; }
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce){
  .page-faq .faq-step::before,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after{
    transition: none;
  }
  .page-faq .faq-step:hover::before,
  .page-faq .faq-step:focus-within::before{
    transform: none;
  }
}
<<<END>>>