.page-faq{
  --faq-panel-bg: rgba(18,42,85,.42);
  background-color: var(--ink-deep);
  background-image:
    linear-gradient(rgba(30,58,107,.55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,58,107,.55) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: -1px -1px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}
.page-faq :is(h1,h2,h3,p,figure){ margin: 0; }
.page-faq a{ color: var(--cyan); text-decoration: none; }
.page-faq a:hover,
.page-faq a:focus-visible{ text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero{
  padding: clamp(18px,3.6vw,40px) var(--edge) 0;
}
.page-faq .faq-frame{
  position: relative;
  max-width: 1240px;
  margin: 0 auto;
  padding: clamp(20px,3.6vw,48px);
  border: 1px solid var(--line);
  background:
    linear-gradient(150deg, rgba(18,42,85,.92), rgba(11,27,58,.45) 58%, rgba(6,16,36,.9)),
    repeating-linear-gradient(90deg, transparent 0 47px, rgba(30,58,107,.5) 47px 48px);
  overflow: hidden;
}
.page-faq .faq-frame::before,
.page-faq .faq-frame::after{
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  border: 1px solid var(--gold);
}
.page-faq .faq-frame::before{ top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.page-faq .faq-frame::after{ right: -1px; bottom: -1px; border-top: 0; border-left: 0; }

.page-faq .faq-hero h1{
  margin: .5em 0 .55em;
  max-width: 22ch;
  font-size: clamp(28px, 5vw, 54px);
  font-weight: 300;
  line-height: 1.14;
  letter-spacing: -.015em;
}
.page-faq .faq-lede{
  max-width: 62ch;
  color: var(--muted);
  font-size: clamp(15px,1.5vw,17px);
}

.page-faq .faq-acts{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px,2.6vw,30px);
}

/* ---------- 步骤条 ---------- */
.page-faq .faq-steps{
  counter-reset: step;
  list-style: none;
  margin: clamp(26px,4vw,44px) 0 0;
  padding: 0;
  display: grid;
  gap: 20px;
}
.page-faq .faq-step{
  position: relative;
  padding-left: 48px;
}
.page-faq .faq-step::before{
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 0;
  left: 0;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--gold);
  background: rgba(245,197,66,.08);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1;
}
.page-faq .faq-step::after{
  content: "";
  position: absolute;
  top: 34px;
  bottom: -20px;
  left: 16px;
  width: 1px;
  background: var(--line);
}
.page-faq .faq-step:last-child::after{ display: none; }
.page-faq .faq-step__title{
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}
.page-faq .faq-step__desc{
  margin-top: 4px;
  font-size: 14px;
  color: var(--muted);
}
@media (min-width: 860px){
  .page-faq .faq-steps{
    grid-template-columns: repeat(3, minmax(0,1fr));
    column-gap: 28px;
    row-gap: 0;
  }
  .page-faq .faq-step{ padding-left: 48px; }
  .page-faq .faq-step::after{
    top: 16px;
    bottom: auto;
    left: 34px;
    width: calc(100% - 34px + 28px);
    height: 1px;
  }
}

/* ---------- 示意图 ---------- */
.page-faq .faq-figure-sec{
  padding: clamp(22px,3.4vw,40px) var(--edge) 0;
}
.page-faq .faq-figure{
  max-width: 1240px;
  margin: 0 auto;
}
.page-faq .faq-figure img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  object-fit: cover;
}
.page-faq .faq-figure figcaption{
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body{
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: clamp(20px,3vw,36px);
  padding-top: clamp(28px,4.6vw,60px);
  padding-bottom: clamp(44px,6vw,96px);
}
.page-faq .faq-toc{
  border-left: 1px solid var(--line);
  padding-left: 16px;
}
.page-faq .faq-toc__title{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--muted);
  text-transform: uppercase;
}
.page-faq .faq-toc ol{
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-faq .faq-toc a{
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 7px 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  border-bottom: 1px solid transparent;
}
.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible{
  color: var(--gold);
  text-decoration: none;
  border-bottom-color: var(--line);
}
.page-faq .faq-toc__num{
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
}

/* ---------- 章节 ---------- */
.page-faq .faq-panel{
  border-top: 1px solid var(--line);
  padding: clamp(22px,3.2vw,38px) 0 clamp(6px,1.6vw,14px);
  scroll-margin-top: calc(var(--top-h) + 24px);
}
.page-faq .faq-panel__idx{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--gold);
  margin-bottom: 8px;
}
.page-faq .faq-panel h2{
  font-size: clamp(21px,2.7vw,30px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.01em;
  margin-bottom: 12px;
}
.page-faq .faq-lead{
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 4px;
}
.page-faq .faq-para{
  margin-top: 12px;
  font-size: 15.5px;
  color: var(--text);
}

.page-faq .faq-list{
  counter-reset: item;
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-faq .faq-list li{
  position: relative;
  padding-left: 38px;
  font-size: 15.5px;
  color: var(--text);
}
.page-faq .faq-list li::before{
  counter-increment: item;
  content: counter(item, decimal-leading-zero);
  position: absolute;
  top: .3em;
  left: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  color: var(--cyan);
}
.page-faq .faq-list strong{
  color: var(--gold);
  font-weight: 600;
}

.page-faq .faq-note{
  margin-top: 18px;
  padding: 12px 16px;
  border-left: 2px solid var(--cyan);
  background: rgba(61,224,208,.06);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}
.page-faq .faq-note b{
  color: var(--cyan);
  font-weight: 600;
}
.page-faq .faq-note a{ color: var(--cyan); }

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

/* ---------- 帮助栏示意 ---------- */
.page-faq .help-map{
  display: block;
  width: 100%;
  height: auto;
  margin-top: 20px;
  border: 1px solid var(--line);
  background: rgba(6,16,36,.55);
}
.page-faq .hm-frame{ fill: none; stroke: var(--line); stroke-width: 1; }
.page-faq .hm-box{ fill: rgba(18,42,85,.55); stroke: var(--line); stroke-width: 1; }
.page-faq .hm-box--gold{ fill: rgba(245,197,66,.08); stroke: var(--gold); }
.page-faq .hm-box--cyan{ fill: rgba(61,224,208,.07); stroke: var(--cyan); }
.page-faq .hm-label{
  font-family: var(--font-sans);
  font-size: 14px;
  fill: var(--text);
}
.page-faq .hm-label--gold{ fill: var(--gold); }
.page-faq .hm-label--cyan{ fill: var(--cyan); }
.page-faq .hm-idx{
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  fill: var(--muted);
}

/* ---------- 排障折叠 ---------- */
.page-faq .filter-bar{
  margin-top: 18px;
}
.page-faq .faq-folds{
  display: grid;
  gap: 10px;
  margin-top: 16px;
}
.page-faq .faq-fold{
  border: 1px solid var(--line);
  background: var(--faq-panel-bg);
}
.page-faq .faq-fold[open]{
  border-color: rgba(245,197,66,.55);
  background: rgba(18,42,85,.62);
}
.page-faq .faq-fold summary{
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 14px 46px 14px 18px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
}
.page-faq .faq-fold summary::-webkit-details-marker{ display: none; }
.page-faq .faq-fold summary::after{
  content: "+";
  position: absolute;
  top: 50%;
  right: 16px;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--gold);
  transition: transform .2s ease;
}
.page-faq .faq-fold[open] summary::after{
  transform: translateY(-50%) rotate(45deg);
}
.page-faq .faq-fold summary:hover{ color: var(--gold); }
.page-faq .faq-fold p{
  padding: 0 18px 16px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-panel--end{ border-top-color: var(--gold); }
.page-faq .faq-acts--end{ margin-top: 22px; }

/* ---------- 桌面 ---------- */
@media (min-width: 960px){
  .page-faq .faq-body{
    grid-template-columns: 218px minmax(0,1fr);
    column-gap: clamp(32px,4vw,64px);
    align-items: start;
  }
  .page-faq .faq-toc{
    position: sticky;
    top: calc(var(--top-h) + 28px);
  }
  .page-faq .faq-figure{ width: 94%; margin-left: auto; }
}
@media (min-width: 1200px){
  .page-faq .faq-panel:nth-child(even) .faq-figure{ width: 88%; margin-left: 0; }
}

@media (prefers-reduced-motion: reduce){
  .page-faq .faq-fold summary::after{ transition: none; }
}
<<<END>>>