/* ===== 使用指南 / 费用与周期 ===== */

.page-faq .gu-hero{
  position: relative;
  padding-block: clamp(18px, 3vw, 36px) clamp(10px, 2vw, 20px);
  overflow: hidden;
}
.page-faq .gu-hero::before{
  content: "";
  position: absolute;
  top: -180px;
  right: -120px;
  width: min(72vw, 680px);
  height: 480px;
  background:
    radial-gradient(circle at 68% 32%, rgba(25, 216, 244, .16), transparent 62%),
    radial-gradient(circle at 24% 78%, rgba(243, 181, 68, .11), transparent 58%);
  pointer-events: none;
  z-index: 0;
}
.page-faq .gu-hero > .wrap{
  position: relative;
  z-index: 1;
}
.page-faq .gu-h1{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.95rem, 5.2vw, 3.9rem);
  line-height: 1.08;
  letter-spacing: -0.012em;
  color: var(--ice);
  margin: .35em 0 .5em;
  max-width: 18ch;
}
.page-faq .gu-lead{
  max-width: 62ch;
  color: var(--mist);
  font-size: clamp(1rem, 1.4vw, 1.075rem);
  line-height: 1.8;
}

/* --- 顶部数据带 --- */
.page-faq .gu-band{
  display: grid;
  gap: 1px;
  margin: clamp(24px, 4vw, 42px) 0 0;
  padding: 0;
  background: var(--line);
  border: var(--edge);
}
@media (min-width: 700px){
  .page-faq .gu-band{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px){
  .page-faq .gu-band{ grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
.page-faq .gu-band-cell{
  position: relative;
  padding: 16px 18px 20px;
  background: linear-gradient(158deg, rgba(11, 34, 57, .96), rgba(6, 17, 31, .96));
}
.page-faq .gu-band-cell::before{
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent 70%);
}
.page-faq .gu-band-cell--amber::before{
  background: linear-gradient(90deg, var(--amber), transparent 70%);
}
.page-faq .gu-band-cell dt{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--graphite);
  margin: 0 0 10px;
}
.page-faq .gu-band-cell dd{
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
  color: var(--ice);
}
.page-faq .gu-num{
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.6vw, 2.2rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}
.page-faq .gu-band-cell--amber .gu-num{ color: var(--amber); }
.page-faq .gu-unit{
  font-size: 12px;
  color: var(--graphite);
}
.page-faq .gu-sub{
  width: 100%;
  font-size: 12.5px;
  color: var(--mist);
  letter-spacing: .02em;
}

/* --- 主体两栏 --- */
.page-faq .gu-layout{
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  padding-block: clamp(26px, 4vw, 52px);
}
@media (min-width: 1000px){
  .page-faq .gu-layout{
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }
}
.page-faq .gu-main{ min-width: 0; }

/* --- 侧边定位 --- */
.page-faq .gu-side-inner{
  border: var(--edge);
  background: linear-gradient(180deg, rgba(11, 34, 57, .92), rgba(6, 17, 31, .92));
  padding: 14px;
}
@media (min-width: 1000px){
  .page-faq .gu-side{ position: sticky; top: 96px; }
}
.page-faq .gu-side-title{
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--graphite);
  text-transform: uppercase;
}
.page-faq .gu-jump{
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
@media (min-width: 1000px){
  .page-faq .gu-jump{ flex-direction: column; flex-wrap: nowrap; }
}
.page-faq .gu-jump-link{
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .07em;
  color: var(--graphite);
  border: 1px solid var(--line);
  border-left: 2px solid transparent;
  padding: 9px 12px;
  text-decoration: none;
  transition: color .18s ease, border-color .18s ease, background .18s ease;
}
.page-faq .gu-jump-link:hover,
.page-faq .gu-jump-link:focus-visible{
  color: var(--ice);
  border-color: var(--cyan);
  background: rgba(25, 216, 244, .07);
}
.page-faq .gu-jump-link.is-active{
  color: var(--cyan);
  border-left-color: var(--amber);
  background: rgba(25, 216, 244, .07);
}
.page-faq .gu-side-note{
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.page-faq .gu-side-note p{
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* --- 章节 --- */
.page-faq .gu-sec{
  padding-block: clamp(24px, 3.6vw, 42px);
  border-top: 1px solid var(--line);
}
.page-faq .gu-sec:first-child{
  border-top: 0;
  padding-top: 0;
}
.page-faq .gu-sec-head{ margin-bottom: clamp(16px, 2.4vw, 26px); }
.page-faq .gu-sec-head .section-title{
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ice);
  margin: .3em 0 .55em;
}
.page-faq .gu-sec-lead{
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}
.page-faq .gu-note{
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--graphite);
}
.page-faq .gu-note a,
.page-faq .gu-inline a,
.page-faq .gu-tpl-foot a{
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(25, 216, 244, .4);
}
.page-faq .gu-note a:hover,
.page-faq .gu-inline a:hover,
.page-faq .gu-tpl-foot a:hover{ border-bottom-color: var(--cyan); }
.page-faq .gu-inline{
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--graphite);
}

/* --- 费用表 --- */
.page-faq .gu-matrix-panel{
  position: relative;
  border: var(--edge);
  background: var(--panel);
  overflow: hidden;
}
.page-faq .gu-matrix-bg{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .15;
  pointer-events: none;
}
.page-faq .gu-matrix-scroll{
  position: relative;
  z-index: 1;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding: 6px 4px 4px;
}
.page-faq .gu-table{
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14.5px;
}
.page-faq .gu-table th,
.page-faq .gu-table td{
  text-align: left;
  padding: 15px 14px;
  vertical-align: top;
}
.page-faq .gu-table thead th{
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: .1em;
  color: var(--graphite);
  text-transform: uppercase;
  padding-bottom: 12px;
}
.page-faq .gu-table tbody th,
.page-faq .gu-table tbody td{
  border-top: 1px solid var(--line);
  color: var(--mist);
  font-weight: 400;
  line-height: 1.7;
}
.page-faq .gu-table tbody th{
  color: var(--ice);
  font-weight: 600;
  white-space: nowrap;
}
.page-faq .gu-table tbody tr:hover th,
.page-faq .gu-table tbody tr:hover td{
  background: rgba(25, 216, 244, .05);
}
.page-faq .gu-price{
  font-family: var(--font-mono);
  color: var(--amber) !important;
  white-space: nowrap;
}
.page-faq .gu-tag{
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .06em;
  border: 1px solid currentColor;
  color: var(--cyan);
  vertical-align: 1px;
}
.page-faq .gu-tag--amber{ color: var(--amber); }
.page-faq .gu-tag--green{ color: var(--green); }

/* --- 周期刻度 --- */
.page-faq .gu-scale{
  display: grid;
  gap: 1px;
  background: var(--line);
  border: var(--edge);
}
@media (min-width: 700px){
  .page-faq .gu-scale{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1080px){
  .page-faq .gu-scale{ grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
.page-faq .gu-scale-cell{
  position: relative;
  padding: 20px 18px 22px;
  background: linear-gradient(180deg, rgba(11, 34, 57, .95), rgba(6, 17, 31, .95));
}
.page-faq .gu-scale-num{
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.9rem, 3.6vw, 2.6rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ice);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 14px;
}
.page-faq .gu-scale-num i{
  font-style: normal;
  font-size: 12px;
  color: var(--amber);
  margin-left: 4px;
  letter-spacing: .08em;
}
.page-faq .gu-scale-cell h3{
  margin: 0 0 8px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: .01em;
}
.page-faq .gu-scale-cell p{
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--graphite);
}

/* --- 检索价格筛选 --- */
.page-faq .gu-figure{
  margin: 0 0 20px;
  border: var(--edge);
  background: var(--panel);
}
.page-faq .gu-figure img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  opacity: .92;
}
.page-faq .gu-figure figcaption{
  padding: 11px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--graphite);
}
.page-faq .gu-filters{
  display: grid;
  gap: 10px;
}
@media (min-width: 760px){
  .page-faq .gu-filters{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.page-faq .gu-filter{
  border: var(--edge);
  background: linear-gradient(180deg, rgba(11, 34, 57, .92), rgba(6, 17, 31, .92));
  transition: border-color .18s ease;
}
.page-faq .gu-filter[open]{ border-color: rgba(25, 216, 244, .5); }
.page-faq .gu-filter summary{
  position: relative;
  list-style: none;
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px 14px;
  padding: 14px 38px 14px 16px;
}
.page-faq .gu-filter summary::-webkit-details-marker{ display: none; }
.page-faq .gu-filter summary::after{
  content: "+";
  position: absolute;
  right: 14px;
  top: 12px;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--cyan);
}
.page-faq .gu-filter[open] summary::after{
  content: "–";
  color: var(--amber);
}
.page-faq .gu-filter-key{
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--ice);
}
.page-faq .gu-filter-val{
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--amber);
}
.page-faq .gu-filter-body{
  padding: 0 16px 15px;
  border-top: 1px solid var(--line);
  margin-top: 2px;
}
.page-faq .gu-filter-body p{
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--graphite);
}

/* --- 批次节奏 --- */
.page-faq .gu-timeline{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: var(--edge);
}
@media (min-width: 820px){
  .page-faq .gu-timeline{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.page-faq .gu-timeline li{
  padding: 18px 18px 20px;
  background: var(--ink);
}
.page-faq .gu-tl-num{
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--amber);
  border: 1px solid rgba(243, 181, 68, .4);
  padding: 2px 8px;
  margin-bottom: 12px;
}
.page-faq .gu-timeline h3{
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ice);
}
.page-faq .gu-timeline p{
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--graphite);
}
.page-faq .gu-facts{
  display: grid;
  gap: 10px;
  margin-top: 16px;
}
@media (min-width: 700px){
  .page-faq .gu-facts{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.page-faq .gu-facts .data-card{
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border: var(--edge);
  border-left: 2px solid var(--cyan);
  background: rgba(11, 34, 57, .7);
}
.page-faq .gu-facts .data-num{
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.35rem, 2.6vw, 1.75rem);
  line-height: 1.1;
  color: var(--cyan);
}
.page-faq .gu-facts .data-label{
  font-size: 12px;
  line-height: 1.6;
  color: var(--graphite);
}

/* --- 费用反馈 --- */
.page-faq .gu-feedback-card{
  display: grid;
  gap: 22px;
  padding: clamp(20px, 3vw, 34px);
  border: 1px solid rgba(243, 181, 68, .34);
  background:
    linear-gradient(135deg, rgba(243, 181, 68, .1), rgba(11, 34, 57, .92) 58%);
}
@media (min-width: 900px){
  .page-faq .gu-feedback-card{ grid-template-columns: 1.45fr 1fr; align-items: start; }
}
.page-faq .gu-feedback-copy .section-title{
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  line-height: 1.32;
  color: var(--ice);
  margin: .3em 0 .6em;
}
.page-faq .gu-feedback-copy > p{
  margin: 0 0 12px;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}
.page-faq .gu-feedback-note{
  font-family: var(--font-mono);
  font-size: 12px !important;
  letter-spacing: .02em;
  color: var(--graphite) !important;
  line-height: 1.75 !important;
}
.page-faq .gu-feedback-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}
.page-faq .gu-feedback-template{
  border: 1px solid rgba(25, 216, 244, .3);
  background: rgba(6, 17, 31, .72);
  padding: 16px 18px 18px;
}
.page-faq .gu-tpl-title{
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-faq .gu-tpl-list{
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}
.page-faq .gu-tpl-list li{
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}
.page-faq .gu-tpl-list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  background: var(--amber);
  box-shadow: 0 0 8px rgba(243, 181, 68, .7);
}
.page-faq .gu-tpl-foot{
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--graphite);
}

/* --- 问答 --- */
.page-faq .gu-faq-group{
  border-top: 1px solid var(--line);
}
.page-faq .gu-faq-cat{
  margin: 24px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--amber);
}
.page-faq .gu-faq-cat::after{
  content: "";
  display: block;
  height: 1px;
  margin: 9px 0 0;
  background: linear-gradient(90deg, var(--line), transparent);
}
.page-faq .gu-q{
  border-top: 1px solid var(--line);
  margin-top: 0;
}
.page-faq .gu-faq-cat + .gu-q{ border-top: 0; }
.page-faq .gu-q summary{
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 15px 38px 15px 14px;
  border-left: 2px solid transparent;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--ice);
  transition: color .18s ease, border-color .18s ease, background .18s ease;
}
.page-faq .gu-q summary::-webkit-details-marker{ display: none; }
.page-faq .gu-q summary::after{
  content: "+";
  position: absolute;
  right: 14px;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--cyan);
}
.page-faq .gu-q summary:hover,
.page-faq .gu-q summary:focus-visible{
  color: var(--cyan);
  background: rgba(25, 216, 244, .05);
}
.page-faq .gu-q[open] summary{
  color: var(--cyan);
  border-left-color: var(--amber);
  background: rgba(25, 216, 244, .06);
}
.page-faq .gu-q[open] summary::after{
  content: "–";
  color: var(--amber);
}
.page-faq .gu-a{
  padding: 2px 40px 18px 16px;
}
.page-faq .gu-a p{
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--graphite);
}

/* --- 细屏收敛 --- */
@media (max-width: 479px){
  .page-faq .gu-h1{ max-width: none; }
  .page-faq .gu-table{ min-width: 520px; }
  .page-faq .gu-band-cell dd{ gap: 4px; }
  .page-faq .gu-q summary{ padding-right: 32px; }
  .page-faq .gu-a{ padding-right: 16px; }
  .page-faq .gu-side-note p{ font-size: 12.5px; }
}

@media (prefers-reduced-motion: reduce){
  .page-faq .gu-jump-link,
  .page-faq .gu-filter,
  .page-faq .gu-q summary{ transition: none; }
}
<<<END>>>
```