.page-faq {
  --faq-line: rgba(29, 106, 130, 0.42);
  --faq-line-soft: rgba(29, 106, 130, 0.22);
  --faq-rail: 264px;
  padding-bottom: 24px;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  padding-top: 26px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
}
.page-faq .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.page-faq .breadcrumbs a:hover {
  color: var(--green);
  border-bottom-color: var(--green);
}
.page-faq .breadcrumbs__sep {
  margin: 0 8px;
  color: var(--mist-dim);
}
.page-faq .breadcrumbs [aria-current="page"] {
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -40%;
  left: -12%;
  width: 44%;
  height: 200%;
  background: linear-gradient(180deg, rgba(53, 224, 138, 0.11), rgba(53, 224, 138, 0) 72%);
  transform: rotate(-3deg);
  pointer-events: none;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 46%;
  height: 1px;
  background: linear-gradient(270deg, var(--amber), rgba(255, 159, 69, 0));
}
.page-faq .faq-hero__inner {
  position: relative;
  padding: 38px 0 46px;
  display: grid;
  gap: 16px;
}
.page-faq .faq-hero__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
}
.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.95rem, 6vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 16em;
}
.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 60ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--mist);
}
.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 14px;
  border-left: 2px solid var(--tide);
  background: rgba(10, 34, 51, 0.72);
}
.page-faq .faq-hero__factnum {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--amber);
  border-bottom: 2px solid rgba(255, 159, 69, 0.35);
  align-self: flex-start;
  line-height: 1.3;
}
.page-faq .faq-hero__factlabel {
  font-size: 13px;
  color: var(--mist);
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding: 44px 0 88px;
}
.page-faq .faq-body {
  min-width: 0;
}

/* ---------- 侧栏目录 ---------- */
.page-faq .faq-toc {
  padding: 18px 18px 16px;
  border: 1px solid var(--faq-line-soft);
  border-top: 3px solid var(--indigo);
  background: rgba(10, 34, 51, 0.66);
}
.page-faq .faq-toc__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist-dim);
}
.page-faq .faq-toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}
.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 10px;
  font-size: 14.5px;
  color: var(--paper);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background 0.16s var(--ease), border-color 0.16s var(--ease), color 0.16s var(--ease);
}
.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  background: rgba(29, 106, 130, 0.22);
  border-left-color: var(--green);
  color: var(--green);
}
.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
}
.page-faq .faq-toc__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--faq-line-soft);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist-dim);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-top: 22px;
  border-top: 1px solid var(--faq-line);
  margin-bottom: 52px;
  scroll-margin-top: calc(var(--head-h) + 24px);
}
.page-faq .faq-group:last-child {
  margin-bottom: 0;
}
.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  margin-bottom: 18px;
}
.page-faq .faq-group__title {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 3.4vw, 1.75rem);
  letter-spacing: -0.01em;
  color: var(--paper);
}
.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--amber);
  padding-left: 10px;
  border-left: 3px solid var(--amber);
  line-height: 1.4;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.page-faq .faq-group[data-in-view] .faq-group__num {
  color: var(--green);
  border-left-color: var(--green);
}
.page-faq .faq-group__lede {
  flex-basis: 100%;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 8px;
}
.page-faq .faq-item {
  position: relative;
  border: 1px solid var(--faq-line-soft);
  background: var(--navy-800);
  transition: border-color 0.16s var(--ease), transform 0.16s var(--ease);
}
.page-faq .faq-item:hover {
  border-color: var(--green);
  transform: translateY(-2px);
}
.page-faq .faq-item[open] {
  border-color: var(--green);
}
.page-faq .faq-item[open]::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--green);
}
.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15.8px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: -3px;
}
.page-faq .faq-item__marker {
  position: relative;
  flex: 0 0 auto;
  width: 17px;
  height: 17px;
  margin-top: 4px;
  border: 1px solid var(--tide);
  transition: border-color 0.16s var(--ease);
}
.page-faq .faq-item__marker::before,
.page-faq .faq-item__marker::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: var(--mist);
  transition: opacity 0.16s var(--ease), background 0.16s var(--ease);
}
.page-faq .faq-item__marker::before {
  width: 8px;
  height: 1.5px;
}
.page-faq .faq-item__marker::after {
  width: 1.5px;
  height: 8px;
}
.page-faq .faq-item[open] .faq-item__marker {
  border-color: var(--green);
}
.page-faq .faq-item[open] .faq-item__marker::before {
  background: var(--green);
}
.page-faq .faq-item[open] .faq-item__marker::after {
  opacity: 0;
}
.page-faq .faq-item__a {
  padding: 0 18px 16px 47px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}
.page-faq .faq-item__a p {
  margin: 0 0 9px;
}
.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-item__a a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 138, 0.4);
  transition: border-color 0.16s var(--ease);
}
.page-faq .faq-item__a a:hover {
  border-bottom-color: var(--green);
}
.page-faq .faq-item__a dfn {
  font-style: normal;
  color: var(--amber);
  border-bottom: 1px dashed rgba(255, 159, 69, 0.6);
  cursor: help;
}

/* ---------- 图示 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 0;
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-line);
}
.page-faq .faq-figure figcaption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist-dim);
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact {
  padding: 22px 18px;
  border: 1px solid var(--faq-line-soft);
  border-left: 3px solid var(--indigo);
  background: linear-gradient(135deg, rgba(59, 42, 110, 0.28), rgba(10, 34, 51, 0.85) 62%);
}
.page-faq .faq-contact__lead {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
}
.page-faq .faq-contact__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}
.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 11px 14px;
  background: rgba(5, 19, 31, 0.62);
  border: 1px solid var(--faq-line-soft);
}
.page-faq .faq-contact__key {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--mist-dim);
}
.page-faq .faq-contact__val {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 14.5px;
  color: var(--amber);
  word-break: break-all;
  border-bottom: 2px solid rgba(255, 159, 69, 0.3);
}
.page-faq .faq-contact__note {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist);
}
.page-faq .faq-contact__note a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 138, 0.4);
}
.page-faq .faq-contact__note a:hover {
  border-bottom-color: var(--green);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .faq-hero__inner {
    padding: 48px 0 56px;
  }
  .page-faq .faq-item__q {
    padding: 17px 22px;
    font-size: 16.2px;
  }
  .page-faq .faq-item__a {
    padding: 0 22px 18px 51px;
  }
  .page-faq .faq-contact {
    padding: 26px 24px;
  }
  .page-faq .faq-contact__row {
    flex-wrap: nowrap;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 56px;
    padding: 56px 0 104px;
  }
  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--head-h) + 24px);
    align-self: start;
  }
  .page-faq .faq-group {
    margin-bottom: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__marker,
  .page-faq .faq-toc__list a,
  .page-faq .breadcrumbs a {
    transition: none;
  }
  .page-faq .faq-item:hover {
    transform: none;
  }
}
<<<END>>>