.page-faq{
  --paper:#FFFDF6;
  --paper-line:rgba(6,42,36,.16);
  --paper-muted:rgba(6,42,36,.68);
  --scene-data:#4F6E10;
  --scene-device:#A64C0C;
  --scene-entry:#6A1F35;
  --scene-contact:#0E3B35;
  background:var(--ivory);
  color:var(--charcoal);
  overflow-x:clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  position:relative;
  background:
    radial-gradient(120% 90% at 84% 6%, rgba(200,255,77,.14), transparent 58%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 100%);
  color:var(--ivory);
  padding:clamp(20px,4vw,32px) 0 clamp(44px,8vw,88px);
  overflow:hidden;
}
.page-faq .faq-hero::before{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:6px;
  background:linear-gradient(90deg,var(--lime) 0%,var(--lime) 46%,var(--orange) 100%);
}
.page-faq .faq-hero::after{
  content:"";
  position:absolute;
  top:-34%;right:-16%;
  width:min(460px,62vw);
  aspect-ratio:1;
  border:1px solid rgba(185,198,201,.16);
  transform:rotate(24deg);
  pointer-events:none;
}
.page-faq .faq-hero .wrap{ position:relative; z-index:1; }
.page-faq .faq-hero .breadcrumbs{ color:var(--muted); }
.page-faq .faq-hero .breadcrumbs__link{ color:var(--lime); }
.page-faq .faq-hero .eyebrow{ color:var(--lime); }
.page-faq .faq-hero h1{
  font-family:var(--font-display);
  font-size:clamp(30px,6.2vw,66px);
  font-weight:800;
  line-height:1.1;
  letter-spacing:.01em;
  margin:.45em 0 .4em;
  max-width:17em;
}
.page-faq .faq-hero__lede{
  max-width:46ch;
  margin:0;
  font-size:clamp(15px,2.4vw,17px);
  line-height:1.8;
  color:rgba(243,241,231,.84);
}
.page-faq .faq-hero__index{
  list-style:none;
  margin:clamp(20px,4vw,30px) 0 0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.page-faq .faq-hero__index a{
  display:inline-block;
  padding:9px 15px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--ivory);
  text-decoration:none;
  border:1px solid rgba(185,198,201,.34);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.page-faq .faq-hero__index a:hover,
.page-faq .faq-hero__index a:focus-visible{
  color:var(--lime);
  border-color:var(--lime);
  background:rgba(200,255,77,.08);
}
.page-faq .faq-hero__note{
  margin:clamp(18px,3vw,26px) 0 0;
  font-size:13px;
  color:var(--muted);
  border-left:2px solid var(--orange);
  padding-left:12px;
}

/* ---------- 区块骨架 ---------- */
.page-faq .faq-sec{ padding:clamp(44px,8vw,92px) 0; }
.page-faq .faq-sec--paper{ background:var(--paper); }
.page-faq .faq-sec--night{ background:var(--night); color:var(--ivory); }
.page-faq .faq-sec--wine{
  background:linear-gradient(160deg,#6A1F35 0%,#4C1626 100%);
  color:var(--ivory);
}
.page-faq .faq-head{ max-width:64ch; margin-bottom:clamp(24px,4vw,44px); }
.page-faq .faq-head h2,
.page-faq .device__copy h2,
.page-faq .contact-split__copy h2,
.page-faq .faq-cta h2{
  font-family:var(--font-display);
  font-size:clamp(25px,4.6vw,44px);
  line-height:1.14;
  margin:.35em 0 .35em;
}
.page-faq .faq-head p,
.page-faq .device__copy > p,
.page-faq .contact-split__copy > p{
  margin:0;
  line-height:1.8;
  color:var(--paper-muted);
}
.page-faq .faq-sec--night .faq-head p,
.page-faq .faq-sec--night .contact-split__copy > p,
.page-faq .faq-sec--wine .faq-head p{ color:rgba(243,241,231,.82); }
.page-faq .faq-sec--paper .faq-head .eyebrow,
.page-faq .faq-sec--paper .device__copy .eyebrow{ color:var(--stand); }
.page-faq .faq-sec--night .eyebrow,
.page-faq .faq-sec--wine .eyebrow{ color:var(--lime); }

/* ---------- 三步判断 ---------- */
.page-faq .diag{ display:grid; gap:clamp(24px,4vw,48px); }
.page-faq .diag__steps{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:14px;
  counter-reset:none;
}
.page-faq .diag__step{
  position:relative;
  padding:20px 20px 20px 66px;
  background:#fff;
  border-left:3px solid var(--lime);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%);
}
.page-faq .diag__no{
  position:absolute;
  left:16px;
  top:20px;
  font-size:18px;
  font-weight:700;
  color:var(--ink);
  background:var(--lime);
  padding:3px 7px;
}
.page-faq .diag__step h3{
  margin:0 0 .4em;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
}
.page-faq .diag__step p{
  margin:0;
  font-size:14.5px;
  line-height:1.78;
  color:var(--paper-muted);
}
.page-faq .diag__figure{ margin:0; }
.page-faq .diag__figure figcaption{
  margin-top:12px;
  font-size:13px;
  line-height:1.7;
  color:var(--paper-muted);
  border-left:2px solid var(--orange);
  padding-left:10px;
}

/* ---------- 数据加载 ---------- */
.page-faq .data-strip{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:calc(12px + 2vw);
  margin:0 0 clamp(22px,4vw,34px);
  padding:14px 0;
  border-top:1px solid rgba(185,198,201,.22);
  border-bottom:1px solid rgba(185,198,201,.22);
  font-size:13px;
  color:var(--muted);
}
.page-faq .data-strip .num{
  display:block;
  font-size:clamp(24px,4vw,34px);
  font-weight:700;
  color:var(--lime);
  line-height:1.1;
}
.page-faq .cause-grid{
  display:grid;
  gap:14px;
  grid-template-columns:1fr;
}
.page-faq .cause-card{
  position:relative;
  padding:22px 22px 24px;
  background:var(--stand);
  border-top:2px solid var(--lime);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 16px),calc(100% - 16px) 100%,0 100%);
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.page-faq .cause-card:hover{ transform:translateY(-2px); background:#10453E; }
.page-faq .cause-card__idx{
  display:inline-block;
  font-size:12px;
  color:var(--orange);
  letter-spacing:.14em;
  margin-bottom:8px;
}
.page-faq .cause-card h3{
  margin:0 0 .5em;
  font-size:17px;
  line-height:1.45;
  color:var(--ivory);
}
.page-faq .cause-card p{
  margin:0;
  font-size:14.5px;
  line-height:1.8;
  color:rgba(243,241,231,.8);
}

/* ---------- 设备 ---------- */
.page-faq .device{ display:grid; gap:clamp(22px,4vw,44px); align-items:start; }
.page-faq .device__figure{ margin:0; }
.page-faq .device__figure figcaption{
  margin-top:12px;
  font-size:13px;
  line-height:1.7;
  color:var(--paper-muted);
}
.page-faq .device__list{
  list-style:none;
  margin:clamp(18px,3vw,26px) 0 clamp(20px,3vw,28px);
  padding:0;
  display:grid;
  gap:12px;
}
.page-faq .device__list li{
  position:relative;
  padding:12px 14px 12px 34px;
  font-size:14.5px;
  line-height:1.75;
  color:var(--paper-muted);
  background:#fff;
  border-left:2px solid var(--orange);
}
.page-faq .device__list li::before{
  content:"";
  position:absolute;
  left:14px;
  top:20px;
  width:8px;
  height:8px;
  background:var(--orange);
  transform:rotate(45deg);
}
.page-faq .device__list strong{ color:var(--ink); }

/* ---------- 入口路径 ---------- */
.page-faq .entry-steps{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:2px;
}
.page-faq .entry-steps li{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:16px;
  padding:18px 4px;
  border-top:1px solid rgba(243,241,231,.2);
}
.page-faq .entry-steps li:last-child{ border-bottom:1px solid rgba(243,241,231,.2); }
.page-faq .entry-steps__no{
  font-size:15px;
  font-weight:700;
  color:var(--lime);
  letter-spacing:.08em;
}
.page-faq .entry-steps h3{
  margin:0 0 .35em;
  font-size:17px;
  color:var(--ivory);
}
.page-faq .entry-steps p{
  margin:0;
  font-size:14.5px;
  line-height:1.78;
  color:rgba(243,241,231,.82);
}
.page-faq .entry-steps__link{
  display:inline-block;
  margin-top:8px;
  font-size:13px;
  font-weight:600;
  color:var(--lime);
  text-decoration:none;
  border-bottom:1px solid rgba(200,255,77,.5);
}
.page-faq .entry-steps__link:hover{ border-bottom-color:var(--lime); }
.page-faq .entry-note{
  margin:clamp(20px,3vw,28px) 0 0;
  font-size:13px;
  color:rgba(243,241,231,.66);
}
.page-faq .entry-note a{ color:var(--lime); }

/* ---------- 联系准备 ---------- */
.page-faq .contact-split{ display:grid; gap:clamp(24px,4vw,48px); align-items:start; }
.page-faq .prep-list{
  list-style:none;
  margin:clamp(18px,3vw,26px) 0 0;
  padding:0;
  display:grid;
  gap:12px;
}
.page-faq .prep-list li{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:14px;
  padding:14px 16px;
  background:rgba(14,59,53,.55);
  border-left:2px solid var(--lime);
}
.page-faq .prep-list__no{ font-size:12px; color:var(--orange); letter-spacing:.1em; }
.page-faq .prep-list strong{ display:block; font-size:15px; color:var(--ivory); margin-bottom:3px; }
.page-faq .prep-list p{ margin:0; font-size:13.5px; line-height:1.7; color:rgba(243,241,231,.76); }
.page-faq .contact-card{
  padding:clamp(20px,3.5vw,30px);
  background:var(--ivory);
  color:var(--charcoal);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%);
}
.page-faq .contact-card .eyebrow{ color:var(--wine); }
.page-faq .contact-card__list{ margin:14px 0 0; padding:0; }
.page-faq .contact-card__row{
  display:grid;
  gap:3px;
  padding:11px 0;
  border-bottom:1px solid var(--paper-line);
}
.page-faq .contact-card__row dt{
  font-size:12px;
  letter-spacing:.08em;
  color:var(--paper-muted);
}
.page-faq .contact-card__row dd{
  margin:0;
  font-size:14.5px;
  line-height:1.6;
  color:var(--ink);
  word-break:break-word;
}
.page-faq .contact-card__note{
  margin:16px 0;
  font-size:13px;
  line-height:1.75;
  color:var(--paper-muted);
  border-left:2px solid var(--orange);
  padding-left:10px;
}

/* ---------- 分类问答 ---------- */
.page-faq .faq-body{ display:grid; gap:clamp(20px,4vw,40px); }
.page-faq .faq-scenes__list{
  list-style:none;
  margin:14px 0 0;
  padding:0;
  display:grid;
  gap:10px;
  grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
}
.page-faq .scene-card{
  padding:14px 14px 12px;
  background:#fff;
  border-left:3px solid var(--paper-line);
}
.page-faq .scene-card h3{ margin:0 0 .35em; font-size:15px; color:var(--ink); }
.page-faq .scene-card p{ margin:0 0 .5em; font-size:13px; line-height:1.65; color:var(--paper-muted); }
.page-faq .scene-card__count{ font-size:11px; letter-spacing:.06em; color:var(--paper-muted); }
.page-faq .scene-card--data{ border-left-color:var(--scene-data); }
.page-faq .scene-card--device{ border-left-color:var(--scene-device); }
.page-faq .scene-card--entry{ border-left-color:var(--scene-entry); }
.page-faq .scene-card--contact{ border-left-color:var(--scene-contact); }

.page-faq .faq-shell{ position:relative; min-width:0; }
.page-faq .faq-filter__input{
  position:absolute;
  width:1px;height:1px;
  opacity:0;
  pointer-events:none;
}
.page-faq .faq-filter{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:clamp(16px,3vw,24px);
}
.page-faq .faq-filter__btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  font-size:13px;
  font-weight:600;
  cursor:pointer;
  color:var(--charcoal);
  background:#fff;
  border:1px solid var(--paper-line);
  clip-path:polygon(8px 0,100% 0,100% 100%,0 100%,0 8px);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.page-faq .faq-filter__btn .num{ font-size:11px; opacity:.65; }
.page-faq .faq-filter__btn:hover{ border-color:var(--ink); }
.page-faq #faq-f-all:checked ~ .faq-filter label[for="faq-f-all"],
.page-faq #faq-f-data:checked ~ .faq-filter label[for="faq-f-data"],
.page-faq #faq-f-device:checked ~ .faq-filter label[for="faq-f-device"],
.page-faq #faq-f-entry:checked ~ .faq-filter label[for="faq-f-entry"],
.page-faq #faq-f-contact:checked ~ .faq-filter label[for="faq-f-contact"]{
  background:var(--ink);
  border-color:var(--ink);
  color:var(--ivory);
}
.page-faq #faq-f-all:focus-visible ~ .faq-filter label[for="faq-f-all"],
.page-faq #faq-f-data:focus-visible ~ .faq-filter label[for="faq-f-data"],
.page-faq #faq-f-device:focus-visible ~ .faq-filter label[for="faq-f-device"],
.page-faq #faq-f-entry:focus-visible ~ .faq-filter label[for="faq-f-entry"],
.page-faq #faq-f-contact:focus-visible ~ .faq-filter label[for="faq-f-contact"]{
  outline:2px solid var(--stand);
  outline-offset:2px;
}
.page-faq #faq-f-data:checked ~ .qa-list .qa:not([data-scene="data"]),
.page-faq #faq-f-device:checked ~ .qa-list .qa:not([data-scene="device"]),
.page-faq #faq-f-entry:checked ~ .qa-list .qa:not([data-scene="entry"]),
.page-faq #faq-f-contact:checked ~ .qa-list .qa:not([data-scene="contact"]){
  display:none;
}

.page-faq .qa-list{ min-width:0; }
.page-faq .qa{
  border-bottom:1px solid var(--paper-line);
  border-left:3px solid transparent;
  padding-left:11px;
  background:transparent;
}
.page-faq .qa:first-child{ border-top:1px solid var(--paper-line); }
.page-faq .qa[data-scene="data"]{ border-left-color:var(--scene-data); }
.page-faq .qa[data-scene="device"]{ border-left-color:var(--scene-device); }
.page-faq .qa[data-scene="entry"]{ border-left-color:var(--scene-entry); }
.page-faq .qa[data-scene="contact"]{ border-left-color:var(--scene-contact); }
.page-faq .qa summary{
  display:grid;
  grid-template-columns:auto 1fr auto;
  gap:12px;
  align-items:center;
  padding:15px 4px;
  cursor:pointer;
  list-style:none;
  transition:background var(--dur) var(--ease);
}
.page-faq .qa summary::-webkit-details-marker{ display:none; }
.page-faq .qa summary:hover{ background:rgba(6,42,36,.04); }
.page-faq .qa summary:focus-visible{ outline:2px solid var(--stand); outline-offset:2px; }
.page-faq .qa__no{
  font-size:12px;
  letter-spacing:.05em;
  color:var(--paper-muted);
  min-width:1.8em;
}
.page-faq .qa__q{
  font-size:clamp(14.5px,2.4vw,16.5px);
  font-weight:700;
  line-height:1.55;
  color:var(--ink);
}
.page-faq .qa__sign{
  position:relative;
  width:20px;
  height:20px;
  border:1px solid var(--paper-line);
  flex:none;
}
.page-faq .qa__sign::before,
.page-faq .qa__sign::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--ink);
  transform:translate(-50%,-50%);
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.page-faq .qa__sign::before{ width:10px; height:1.5px; }
.page-faq .qa__sign::after{ width:1.5px; height:10px; }
.page-faq .qa[open] .qa__sign::after{ transform:translate(-50%,-50%) scaleY(0); opacity:0; }
.page-faq .qa[open] .qa__q{ color:var(--scene-entry); }
.page-faq .qa[data-scene="data"][open] .qa__q{ color:var(--scene-data); }
.page-faq .qa[data-scene="device"][open] .qa__q{ color:var(--scene-device); }
.page-faq .qa[data-scene="contact"][open] .qa__q{ color:var(--scene-contact); }
.page-faq .qa__a{
  padding:2px 4px 20px;
  border-top:1px solid rgba(6,42,36,.08);
}
.page-faq .qa__a p{
  margin:12px 0 0;
  font-size:14.5px;
  line-height:1.85;
  color:var(--paper-muted);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta{
  background:linear-gradient(100deg,var(--ink) 0%,var(--ink) 58%,var(--stand) 100%);
  color:var(--ivory);
  padding:clamp(34px,6vw,64px) 0;
}
.page-faq .faq-cta::before{
  content:"";
  display:block;
  height:5px;
  margin-bottom:clamp(24px,4vw,40px);
  background:repeating-linear-gradient(90deg,var(--lime) 0 18px,transparent 18px 30px);
}
.page-faq .faq-cta__inner{
  display:grid;
  gap:clamp(20px,4vw,40px);
  align-items:center;
}
.page-faq .faq-cta .eyebrow{ color:var(--orange); }
.page-faq .faq-cta h2{ font-size:clamp(24px,4.2vw,40px); margin:.3em 0 .3em; }
.page-faq .faq-cta p{ margin:0; font-size:15px; line-height:1.75; color:rgba(243,241,231,.8); }
.page-faq .faq-cta__actions{ display:flex; flex-wrap:wrap; gap:10px; }

/* ---------- 响应式 ---------- */
@media (min-width:700px){
  .page-faq .cause-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .page-faq .cause-card:nth-child(even){ margin-top:22px; }
  .page-faq .contact-card__row{
    grid-template-columns:7.5em minmax(0,1fr);
    align-items:baseline;
    gap:10px;
  }
}

@media (min-width:900px){
  .page-faq .diag{ grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr); align-items:start; }
  .page-faq .device{ grid-template-columns:minmax(0,1fr) minmax(0,1.05fr); }
  .page-faq .contact-split{ grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr); }
  .page-faq .faq-cta__inner{ grid-template-columns:minmax(0,1fr) auto; }
  .page-faq .faq-body{ grid-template-columns:250px minmax(0,1fr); }
  .page-faq .faq-scenes{ position:sticky; top:28px; }
  .page-faq .faq-scenes__list{ grid-template-columns:1fr; }
}

@media (prefers-reduced-motion:reduce){
  .page-faq .cause-card,
  .page-faq .qa summary,
  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after,
  .page-faq .faq-hero__index a{ transition:none; }
  .page-faq .cause-card:hover{ transform:none; }
}
<<<END>>>