.page-faq {
  --faq-line: var(--ink-600);
  --faq-gap: clamp(16px, 2.6vw, 30px);
  background: var(--ink-900);
  color: var(--paper);
  padding-bottom: clamp(40px, 6vw, 80px);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 44px) 0 clamp(28px, 4.5vw, 56px);
  border-bottom: 1px solid var(--faq-line);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(184, 245, 60, 0.12), transparent 56%),
    linear-gradient(160deg, var(--ink-800) 0%, var(--ink-900) 62%);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  top: -35%;
  width: 48%;
  height: 180%;
  background: linear-gradient(180deg, rgba(184, 245, 60, 0.08), rgba(53, 214, 164, 0.02) 70%, transparent);
  transform: rotate(13deg);
  pointer-events: none;
}
.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}
.page-faq .faq-breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}
.page-faq .faq-hero__title {
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.08;
  font-size: clamp(28px, 5.2vw, 58px);
  margin: 12px 0 0;
  color: var(--paper);
}
.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 60ch;
  color: var(--muted);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
}
.page-faq .faq-hero__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 22px 0 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.page-faq .faq-hero__meta li {
  display: flex;
  align-items: center;
  gap: 8px;
}
.page-faq .faq-hero__meta li::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--lime);
  transform: rotate(45deg);
  flex: none;
}
.page-faq .faq-hero__meta li:nth-child(3)::before {
  background: var(--orange);
}

/* 检索 */
.page-faq .faq-search {
  margin-top: clamp(24px, 3.6vw, 40px);
  max-width: 640px;
  padding-left: 16px;
  border-left: 3px solid var(--lime);
}
.page-faq .faq-search__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.page-faq .faq-search__field {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--ink-950);
  border: 1px solid var(--faq-line);
}
.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  background: transparent;
  border: 0;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 14px 44px 14px 14px;
}
.page-faq .faq-search__input::placeholder {
  color: var(--moss);
}
.page-faq .faq-search__input:focus {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}
.page-faq .faq-search__key {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--lime);
  border: 1px solid var(--faq-line);
  padding: 2px 7px;
  background: var(--ink-800);
}
.page-faq .faq-search__hint {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--moss);
  line-height: 1.6;
}
.page-faq .faq-search__slash {
  font-family: var(--font-mono);
  color: var(--muted);
}

/* 布局 */
.page-faq .faq-body {
  padding-top: clamp(28px, 4vw, 52px);
}
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

/* 目录 */
.page-faq .faq-toc {
  order: -1;
}
.page-faq .faq-toc__nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
}
.page-faq .faq-toc__link {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  padding: 9px 14px;
  font-size: 14px;
  color: var(--muted);
  border: 1px solid var(--faq-line);
  background: var(--ink-800);
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--moss);
}
.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--paper);
  border-color: var(--lime);
}
.page-faq .faq-toc__link[aria-current="true"] {
  color: var(--paper);
  border-color: var(--lime);
  box-shadow: inset 3px 0 0 var(--lime);
}
.page-faq .faq-toc__link[aria-current="true"] .faq-toc__num {
  color: var(--lime);
}
.page-faq .faq-toc__note {
  display: none;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--faq-line);
}
.page-faq .faq-toc__note p {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--moss);
}

/* 分组 */
.page-faq .faq-main {
  min-width: 0;
}
.page-faq .faq-empty {
  margin: 0 0 24px;
  padding: 14px 16px;
  border-left: 3px solid var(--orange);
  background: var(--orange-dim);
  color: var(--paper);
  font-size: 14px;
}
.page-faq .faq-group {
  padding: clamp(24px, 3.4vw, 40px) 0;
  border-top: 1px solid var(--faq-line);
  scroll-margin-top: calc(var(--header-h) + 20px);
}
.page-faq .faq-group:first-of-type {
  border-top: 0;
  padding-top: 0;
}
.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  margin-bottom: 14px;
}
.page-faq .faq-index {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1;
  color: var(--ink-600);
  padding-top: 4px;
}
.page-faq .faq-group__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--paper);
}
.page-faq .faq-group__lead {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 56ch;
}

/* 问答 */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}
.page-faq .faq-list {
  min-width: 0;
}
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .faq-item summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 18px;
  gap: 14px;
  align-items: start;
  padding: 17px 0;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}
.page-faq .faq-q {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(15px, 1.5vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
}
.page-faq .faq-item summary:hover .faq-q {
  color: var(--lime);
}
.page-faq .faq-mark {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 5px;
  justify-self: end;
  flex: none;
}
.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--lime);
  transform: translate(-50%, -50%);
}
.page-faq .faq-mark::before {
  width: 14px;
  height: 2px;
}
.page-faq .faq-mark::after {
  width: 2px;
  height: 14px;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.page-faq .faq-item[open] .faq-mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}
.page-faq .faq-a {
  margin: 0;
  padding: 0 0 20px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}
.page-faq .faq-a__lead {
  display: block;
  color: var(--paper);
  font-weight: 600;
  margin-bottom: 6px;
}

/* 图 */
.page-faq .faq-figure {
  margin: 0;
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-figure .media__caption {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--moss);
}

/* 延伸面板 */
.page-faq .faq-bridge {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px;
}
.page-faq .faq-bridge__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
}
.page-faq .faq-bridge__title {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}
.page-faq .faq-bridge__text {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 56ch;
}

/* 流程图 */
.page-faq .faq-flow {
  margin: 26px 0 0;
  padding: 18px 14px 12px;
  background: var(--ink-800);
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--teal);
}
.page-faq .faq-flow svg {
  display: block;
  width: 100%;
  height: auto;
}
.page-faq .faq-flow__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--moss);
  text-align: left;
}

/* 联系块 */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-bottom: 8px;
}
.page-faq .faq-contact__card {
  padding: 18px;
}
.page-faq .faq-contact__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--moss);
}
.page-faq .faq-contact__value {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(14px, 2vw, 17px);
  font-weight: 700;
  color: var(--lime);
  word-break: break-all;
  line-height: 1.4;
}
.page-faq .faq-contact__note {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}
.page-faq .faq-item--plain {
  margin-top: 4px;
}

.page-faq .faq-cta {
  margin-top: 24px;
  padding: 22px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(115deg, var(--ink-700), var(--ink-800) 70%);
  border-left: 3px solid var(--lime);
}
.page-faq .faq-cta__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
}
.page-faq .faq-cta__text {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 52ch;
}
.page-faq .faq-cta .btn {
  flex: none;
}

.page-faq .faq-related {
  margin: 18px 0 0;
  font-size: 13px;
  color: var(--moss);
  line-height: 1.9;
}
.page-faq .faq-related a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .faq-related a:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
}
.page-faq .faq-related__sep {
  margin: 0 8px;
  color: var(--ink-600);
}

@media (min-width: 720px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    gap: 24px;
    align-items: start;
  }
  .page-faq .faq-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .faq-cta {
    padding: 26px 24px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: clamp(24px, 3.4vw, 48px);
    align-items: start;
  }
  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
  .page-faq .faq-toc__nav {
    display: grid;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-toc__link {
    border: 0;
    border-left: 2px solid var(--faq-line);
    background: transparent;
    white-space: normal;
    padding: 10px 0 10px 14px;
    font-size: 14px;
  }
  .page-faq .faq-toc__link[aria-current="true"] {
    border-left-color: var(--lime);
    box-shadow: none;
    background: linear-gradient(90deg, var(--lime-dim), transparent 85%);
  }
  .page-faq .faq-toc__note {
    display: block;
  }
  .page-faq .faq-contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-group__head {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-mark::after,
  .page-faq .faq-toc__link {
    transition: opacity 0.2s linear;
  }
  .page-faq .faq-hero::after {
    display: none;
  }
}
<<<END>>>