.page-faq {
  --faq-index-w: 232px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(760px 360px at 92% -20%, rgba(139, 92, 255, 0.26), transparent 68%),
    radial-gradient(620px 340px at 4% 118%, rgba(34, 230, 255, 0.14), transparent 70%),
    var(--ink-900);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    linear-gradient(180deg, var(--line) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: 0.38;
}

.page-faq .faq-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumbs {
  padding-top: 20px;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding-block: 28px 48px;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-size: var(--step-3);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
  transform: skewX(-2deg);
}

.page-faq .faq-hero .lede {
  max-width: 46ch;
  margin: 0;
  font-size: var(--step-0);
  line-height: 1.8;
  color: var(--muted);
}

/* 搜索条 */
.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  padding: 0 14px;
  background: var(--ink-800);
  border: 1px solid var(--line-strong);
  box-shadow: inset 2px 0 0 0 var(--cyan);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-search:focus-within {
  border-color: var(--cyan);
  background: var(--ink-700);
}

.page-faq .faq-search__icon {
  flex: none;
  color: var(--cyan);
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  width: 100%;
  padding: 14px 0;
  border: 0;
  background: transparent;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.4;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.page-faq .faq-search__input::placeholder {
  color: var(--muted);
  opacity: 0.85;
}

.page-faq .faq-search__hint {
  flex: none;
  padding-left: 12px;
  border-left: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--muted);
  white-space: nowrap;
}

/* 快捷跳转 */
.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump a {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: var(--step--1);
  color: var(--muted);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(34, 230, 255, 0.07);
}

/* 首屏视觉 */
.page-faq .faq-hero__visual {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-strong);
  background: var(--ink-800);
}

.page-faq .faq-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-faq .faq-hero__visual figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 7px 12px;
  background: var(--cyan);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.02em;
}

/* ---------- 双栏主体 ---------- */
.page-faq .faq-body {
  padding-block: 36px 56px;
}

.page-faq .faq-body__inner {
  display: block;
}

.page-faq .faq-index {
  margin: 0 0 32px;
  padding: 16px 14px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(20, 28, 48, 0.92), rgba(10, 16, 32, 0.6));
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

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

.page-faq .faq-index__list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 10px 2px 10px 8px;
  border-left: 2px solid transparent;
  border-bottom: 1px solid var(--line);
  color: var(--paper);
  font-size: var(--step-0);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(34, 230, 255, 0.06);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--cyan);
}

.page-faq .faq-index__foot {
  margin: 16px 0 0;
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-index__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 230, 255, 0.45);
}

/* ---------- 分组与问答 ---------- */
.page-faq .faq-group {
  margin: 0 0 32px;
  scroll-margin-top: 92px;
}

.page-faq .faq-group:last-child {
  margin-bottom: 0;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-group__title {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--step-2);
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__figure {
  position: relative;
  margin: 16px 0 6px;
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--ink-800);
}

.page-faq .faq-group__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 220px;
  object-fit: cover;
}

.page-faq .faq-item {
  border-left: 2px solid transparent;
  border-bottom: 1px solid var(--line);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(34, 230, 255, 0.08), rgba(34, 230, 255, 0) 62%);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 8px 16px 14px;
  color: var(--paper);
  font-size: var(--step-0);
  font-weight: 600;
  line-height: 1.6;
  cursor: pointer;
  list-style: none;
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item summary::before {
  content: "+";
  flex: none;
  width: 1ch;
  font-family: var(--font-mono);
  font-size: 1.1em;
  line-height: 1.5;
  color: var(--cyan);
}

.page-faq .faq-item[open] summary::before {
  content: "−";
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-item__a {
  padding: 0 12px 18px 40px;
}

.page-faq .faq-item__a p {
  max-width: 48ch;
  margin: 0 0 10px;
  font-size: var(--step-0);
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-item__link {
  display: inline-block;
  font-size: var(--step--1);
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 230, 255, 0.4);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-item__link:hover,
.page-faq .faq-item__link:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 底部联系 ---------- */
.page-faq .faq-contact {
  padding-block: 8px 64px;
}

.page-faq .faq-contact__card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding: clamp(22px, 4vw, 40px);
  border-left: 3px solid var(--violet);
  background:
    linear-gradient(135deg, rgba(139, 92, 255, 0.24), rgba(10, 16, 32, 0.96) 58%),
    var(--ink-800);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-faq .faq-contact__copy h2 {
  margin: 6px 0 10px;
  font-family: var(--font-display);
  font-size: var(--step-2);
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-contact__copy p {
  max-width: 44ch;
  margin: 0;
  font-size: var(--step-0);
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-contact__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-contact__mail {
  margin: 6px 0 10px;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  color: var(--cyan);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__note {
  margin: 0 0 16px;
  font-size: var(--step--1);
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
    gap: 40px;
    padding-block: 40px 56px;
  }

  .page-faq .faq-hero h1 {
    font-size: var(--step-4);
  }

  .page-faq .faq-group__figure {
    margin: 18px 0 4px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body {
    padding-block: 48px 72px;
  }

  .page-faq .faq-body__inner {
    display: grid;
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 92px;
    margin-bottom: 0;
  }

  .page-faq .faq-item__a {
    padding-left: 44px;
  }

  .page-faq .faq-contact__card {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 40px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-search,
  .page-faq .faq-jump a,
  .page-faq .faq-index__list a,
  .page-faq .faq-item,
  .page-faq .faq-item summary,
  .page-faq .faq-item__link {
    transition: none;
  }

  .page-faq .faq-hero h1 {
    transform: none;
  }
}
<<<END>>>