/* ============================================================
   使用指南 · 页面专属样式（作用域：.page-faq）
   ============================================================ */

.page-faq{
  --faq-index-w: 248px;
  --faq-line: rgba(159, 179, 200, .55);
}

/* ---------- 面包屑条 ---------- */
.page-faq .faq-crumb{
  background: var(--cream);
  border-bottom: 1px solid var(--faq-line);
  padding: 12px 0;
}
.page-faq .faq-crumb .bc-list{
  margin: 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  position: relative;
  overflow: hidden;
  background: var(--navy);
  color: var(--cream);
  padding: clamp(34px, 5.5vw, 68px) 0 clamp(42px, 6vw, 78px);
}
.page-faq .faq-hero::before{
  content: "";
  position: absolute;
  top: -25%;
  right: -16%;
  width: 54%;
  height: 150%;
  background: repeating-linear-gradient(112deg, rgba(35, 224, 196, .16) 0 2px, rgba(35, 224, 196, 0) 2px 17px);
  transform: skewX(-9deg);
  pointer-events: none;
}
.page-faq .faq-hero::after{
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 8px;
  background: linear-gradient(90deg, var(--red) 0 52%, var(--cyan) 52% 76%, var(--yellow) 76% 100%);
}
.page-faq .faq-hero__inner{
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero .eyebrow{
  margin: 0 0 14px;
  color: var(--cyan);
}
.page-faq .faq-hero .display{
  margin: 0 0 18px;
  max-width: 14em;
  color: var(--cream);
  letter-spacing: -.015em;
}
.page-faq .faq-hero__lede{
  max-width: 60ch;
  margin: 0;
  font-size: 17px;
  line-height: 1.78;
  color: rgba(255, 248, 242, .84);
}

/* 三条最常见路径 */
.page-faq .faq-quick{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: clamp(26px, 4vw, 42px);
}
@media (min-width: 680px){
  .page-faq .faq-quick{
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}
.page-faq .faq-quick__item{
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 18px;
  background: var(--cream);
  color: var(--ink);
  border: 0;
  border-left: 6px solid var(--red);
  box-shadow: 8px 8px 0 var(--red-deep);
  text-decoration: none;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.page-faq .faq-quick__item:hover,
.page-faq .faq-quick__item:focus-visible{
  transform: translate(-3px, -3px);
  box-shadow: 11px 11px 0 var(--red-deep);
  border-left-color: var(--cyan);
  outline: none;
}
.page-faq .faq-quick__idx{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--red);
}
.page-faq .faq-quick__label{
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--navy);
}
.page-faq .faq-quick__hint{
  font-size: 14px;
  line-height: 1.65;
  color: var(--navy-2);
}

/* ---------- 正文画布 ---------- */
.page-faq .faq-body{
  background: var(--cream);
  padding: clamp(30px, 5vw, 56px) 0 clamp(56px, 7vw, 92px);
}
.page-faq .faq-shell{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
}
@media (min-width: 1024px){
  .page-faq .faq-shell{
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(34px, 4vw, 60px);
    align-items: start;
  }
}

/* ---------- 左侧分类索引 ---------- */
.page-faq .faq-index{
  padding-top: 6px;
}
@media (min-width: 1024px){
  .page-faq .faq-index{
    position: sticky;
    top: 28px;
  }
}
.page-faq .faq-index__title{
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--mist);
}
.page-faq .faq-index__list{
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}
.page-faq .faq-index__list > li{
  flex: 0 0 auto;
}
@media (min-width: 1024px){
  .page-faq .faq-index__list{
    flex-direction: column;
    gap: 1px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-index__list > li{
    flex: 1 1 auto;
    width: 100%;
  }
}
.page-faq .faq-index__link{
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 11px 14px;
  font-size: 15px;
  line-height: 1.4;
  color: var(--navy);
  background: var(--grey);
  border-left: 4px solid var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease;
}
@media (min-width: 1024px){
  .page-faq .faq-index__link{
    background: transparent;
    border-left-width: 3px;
    white-space: normal;
  }
}
.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible{
  background: var(--grey);
  border-left-color: var(--red);
  color: var(--red-deep);
  outline: none;
}
.page-faq .faq-index__num{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--mist);
}
.page-faq .faq-index__link:hover .faq-index__num,
.page-faq .faq-index__link:focus-visible .faq-index__num{
  color: var(--red);
}

/* ---------- 问答区骨架 ---------- */
.page-faq .faq-flow{
  min-width: 0;
}
.page-faq .faq-block{
  scroll-margin-top: calc(var(--bar-h) + 20px);
  padding: clamp(22px, 3.4vw, 40px) 0;
}
.page-faq .faq-block + .faq-block{
  border-top: 1px solid var(--faq-line);
}
.page-faq .faq-block:first-child{
  padding-top: 0;
}
.page-faq .faq-block__num{
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--red);
}
.page-faq .faq-block__title{
  margin: 0 0 12px;
  font-size: clamp(21px, 3.1vw, 29px);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--navy);
}
.page-faq .faq-block__lede{
  max-width: 64ch;
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--navy-2);
}

/* ---------- 步骤流程条 ---------- */
.page-faq .flow{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  margin: 0 0 26px;
  padding: 0 0 0 14px;
  list-style: none;
  border-left: 3px solid var(--grey);
}
@media (min-width: 760px){
  .page-faq .flow{
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    padding-left: 0;
    border-left: 0;
    border-top: 3px solid var(--navy);
  }
}
.page-faq .flow__item{
  position: relative;
  display: flex;
  gap: 12px;
  min-width: 0;
  padding: 12px 16px 12px 0;
}
@media (min-width: 760px){
  .page-faq .flow__item{
    padding: 20px 24px 6px 0;
  }
  .page-faq .flow__item::before{
    content: "";
    position: absolute;
    top: -9px;
    left: 0;
    width: 14px;
    height: 14px;
    background: var(--red);
    transform: rotate(45deg);
  }
}
.page-faq .flow__idx{
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--navy);
  background: var(--yellow);
}
.page-faq .flow__title{
  margin: 0 0 4px;
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--navy);
}
.page-faq .flow__text{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--navy-2);
}

/* ---------- 图文分栏 ---------- */
.page-faq .faq-split{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  min-width: 0;
}
@media (min-width: 900px){
  .page-faq .faq-split{
    gap: 34px;
    align-items: start;
  }
  .page-faq .faq-split--media-left{
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  }
  .page-faq .faq-split--media-right{
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  }
}
.page-faq .faq-media{
  min-width: 0;
  margin: 0;
}
.page-faq .faq-media .media{
  display: block;
  overflow: hidden;
  background: var(--navy-2);
  border: 3px solid var(--navy);
  box-shadow: 8px 8px 0 var(--red-deep);
}
.page-faq .faq-media img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-media__cap{
  display: block;
  margin-top: 16px;
  padding-left: 12px;
  border-left: 3px solid var(--red);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--navy-2);
}

/* ---------- 可展开问答组 ---------- */
.page-faq .qa-list{
  min-width: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .qa-list details{
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .qa-list summary{
  padding: 16px 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.62;
  color: var(--navy);
  transition: color .16s ease;
}
.page-faq .qa-list summary:hover{
  color: var(--red-deep);
}
.page-faq .qa-list .disclosure__body{
  padding: 0 0 18px;
}
.page-faq .qa-list .disclosure__body p{
  max-width: 64ch;
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--navy-2);
}
.page-faq .qa-list .disclosure__body p:last-child{
  margin-bottom: 0;
}
.page-faq .qa-num{
  display: inline-block;
  margin-right: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: .06em;
  color: var(--red);
}

/* ---------- 客服信息块 ---------- */
.page-faq .support-card{
  margin: 4px 0 24px;
  padding: clamp(20px, 3vw, 26px);
  background: var(--grey);
  border: 3px solid var(--navy);
  box-shadow: 8px 8px 0 var(--red-deep);
}
.page-faq .support-card__lead{
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--red);
}
.page-faq .support-card__addr{
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.4vw, 20px);
  letter-spacing: -.01em;
  color: var(--navy);
  word-break: break-all;
}
.page-faq .support-card__hours{
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--navy-2);
}
.page-faq .support-card__tip{
  max-width: 56ch;
  margin: 0 0 18px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--navy-2);
}
.page-faq .support-card__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
@media (max-width: 479px){
  .page-faq .support-card__actions .btn{
    flex: 1 1 100%;
    justify-content: center;
    text-align: center;
  }
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 479px){
  .page-faq .faq-hero__lede,
  .page-faq .faq-block__lede,
  .page-faq .qa-list .disclosure__body p{
    font-size: 15px;
  }
  .page-faq .faq-quick__label{
    font-size: 17px;
  }
  .page-faq .faq-media .media,
  .page-faq .support-card{
    box-shadow: 6px 6px 0 var(--red-deep);
  }
}