.page-faq {
  --faq-rail-w: 264px;
  --faq-body: #c9d3ce;
  background: var(--ink);
  color: var(--cream);
  font-family: var(--font-body);
  padding-bottom: clamp(56px, 9vw, 110px);
}

.page-faq p {
  margin: 0;
}

.page-faq .faq-crumbs {
  padding-top: clamp(16px, 3vw, 28px);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding-top: clamp(26px, 5vw, 54px);
  padding-bottom: clamp(26px, 4vw, 44px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 88px 100%;
  opacity: 0.5;
  pointer-events: none;
}

.page-faq .faq-hero > * {
  position: relative;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 5.4vw, 4rem);
  line-height: 1.06;
  letter-spacing: -0.01em;
  margin: 14px 0 18px;
  max-width: 20ch;
  color: var(--cream);
}

.page-faq .faq-hero__lead {
  max-width: 58ch;
  color: var(--faq-body);
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  line-height: 1.9;
}

.page-faq .faq-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-faq .faq-quick a {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  padding: 7px 12px;
  border: 1px solid var(--line-strong);
  color: var(--cream);
  text-decoration: none;
  transition: border-color var(--ease), color var(--ease), background var(--ease);
}

.page-faq .faq-quick a:hover,
.page-faq .faq-quick a:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
  background: var(--lime-dim);
  outline: none;
}

.page-faq .faq-quick a:focus-visible {
  box-shadow: 0 0 0 2px var(--ink), 0 0 0 4px var(--lime);
}

/* 双栏骨架 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 46px);
  padding-top: clamp(28px, 5vw, 52px);
}

/* 左侧问题索引轨道 */
.page-faq .faq-rail {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel), rgba(11, 36, 29, 0.42));
  padding: 16px 0 12px;
  overflow-x: auto;
}

.page-faq .faq-rail__cap {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--moss);
  padding: 0 16px 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-rail__link {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  align-items: baseline;
  gap: 6px;
  padding: 11px 16px;
  border-left: 2px solid transparent;
  color: var(--silver);
  text-decoration: none;
  font-size: 0.92rem;
  line-height: 1.45;
  white-space: nowrap;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-faq .faq-rail__idx {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--moss);
  transition: color var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-left-color: var(--lime);
  background: var(--lime-dim);
  color: var(--cream);
  outline: none;
}

.page-faq .faq-rail__link:hover .faq-rail__idx,
.page-faq .faq-rail__link:focus-visible .faq-rail__idx {
  color: var(--lime);
}

.page-faq .faq-rail__link:focus-visible {
  box-shadow: inset 0 0 0 2px var(--lime);
}

/* 右侧答案区 */
.page-faq .faq-body {
  display: grid;
  gap: clamp(34px, 5vw, 58px);
  min-width: 0;
}

.page-faq .faq-sec {
  scroll-margin-top: 100px;
  min-width: 0;
}

.page-faq .faq-sec__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-top: 14px;
  border-top: 2px solid var(--line-strong);
}

.page-faq .faq-sec__num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--orange);
  flex: none;
}

.page-faq .faq-sec h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 2.6vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.005em;
  margin: 0;
  color: var(--cream);
}

.page-faq .faq-sec__lead {
  margin-top: 12px;
  max-width: 64ch;
  color: var(--faq-body);
  font-size: 0.95rem;
  line-height: 1.9;
}

/* 三步路径 */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 22px 0 0;
  padding: 0;
}

.page-faq .faq-steps__item {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-steps__item::before {
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--lime);
}

.page-faq .faq-steps__t {
  font-weight: 600;
  font-size: 1rem;
  color: var(--cream);
  line-height: 1.6;
}

.page-faq .faq-steps__d {
  margin-top: 5px;
  color: var(--faq-body);
  font-size: 0.92rem;
  line-height: 1.85;
}

/* 图 */
.page-faq .faq-fig {
  margin: 24px 0 0;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .faq-fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-fig figcaption {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  letter-spacing: 0.04em;
  color: var(--moss);
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  line-height: 1.6;
}

/* 问答折叠 */
.page-faq .faq-item {
  border-top: 1px solid var(--line);
}

.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-sec__lead + .faq-item {
  margin-top: 20px;
}

.page-faq .faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 0;
  font-size: 0.99rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--cream);
  transition: color var(--ease);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::before {
  content: "+";
  flex: none;
  width: 1.1rem;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--orange);
  transition: color var(--ease);
}

.page-faq .faq-item[open] > summary {
  color: var(--lime);
}

.page-faq .faq-item[open] > summary::before {
  content: "−";
  color: var(--lime);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.page-faq .faq-item__a {
  margin: 0 0 18px 1.9rem;
  padding-left: 14px;
  border-left: 1px solid var(--line);
  max-width: 62ch;
  color: var(--faq-body);
  font-size: 0.93rem;
  line-height: 1.95;
  transition: border-color var(--ease);
}

.page-faq .faq-item[open] .faq-item__a {
  border-left-color: var(--lime);
}

/* 排序规则 */
.page-faq .faq-sort {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-sort__row {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 10px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.93rem;
  line-height: 1.7;
}

.page-faq .faq-sort__num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--orange);
}

.page-faq .faq-sort__k {
  color: var(--cream);
  font-weight: 600;
}

.page-faq .faq-sort__v {
  color: var(--faq-body);
}

.page-faq .faq-callout {
  margin-top: 22px;
  padding: 15px 18px;
  background: var(--soil);
  border-left: 3px solid var(--orange);
  color: var(--paper);
  font-size: 0.9rem;
  line-height: 1.9;
}

/* 客服前准备 */
.page-faq .faq-check {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-check li {
  display: grid;
  grid-template-columns: 1.1rem minmax(0, 1fr);
  gap: 10px;
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--faq-body);
}

.page-faq .faq-check li::before {
  content: "▸";
  font-size: 0.85rem;
  line-height: 1.85;
  color: var(--lime);
}

.page-faq .faq-contact {
  margin-top: 24px;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line-strong);
  background: linear-gradient(135deg, var(--panel), var(--soil));
}

.page-faq .faq-contact__cap {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--lime);
}

.page-faq .faq-contact__list {
  margin: 16px 0 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-contact__row dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--moss);
}

.page-faq .faq-contact__row dd {
  margin: 3px 0 0;
  color: var(--cream);
  font-size: 0.95rem;
  line-height: 1.7;
  word-break: break-word;
}

.page-faq .faq-contact__note {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--faq-body);
  font-size: 0.87rem;
  line-height: 1.85;
}

.page-faq .faq-next {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-next__t {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: var(--moss);
  margin-right: 6px;
}

/* 窄屏：索引轨道转为横向标签带 */
@media (max-width: 899px) {
  .page-faq .faq-rail {
    position: static;
    padding: 12px 0 8px;
  }

  .page-faq .faq-rail__cap {
    padding: 0 14px 10px;
  }

  .page-faq .faq-rail__list {
    display: flex;
    gap: 0;
  }

  .page-faq .faq-rail__link {
    border-left: 0;
    border-bottom: 2px solid transparent;
    padding: 9px 14px;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    border-left-color: transparent;
    border-bottom-color: var(--lime);
  }
}

@media (max-width: 560px) {
  .page-faq .faq-sort__row {
    grid-template-columns: 1.8rem minmax(0, 1fr);
    row-gap: 4px;
  }

  .page-faq .faq-sort__v {
    grid-column: 2;
  }

  .page-faq .faq-steps__item {
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 10px;
  }

  .page-faq .faq-item__a {
    margin-left: 1.6rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
    overflow-x: visible;
  }

  .page-faq .faq-contact__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 24px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero__lead {
    max-width: 62ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick a,
  .page-faq .faq-rail__link,
  .page-faq .faq-rail__idx,
  .page-faq .faq-item > summary,
  .page-faq .faq-item > summary::before,
  .page-faq .faq-item__a {
    transition: none;
  }
}
<<<END>>>