.page-faq {
  --faq-muted: #C4D2DE;
  --faq-dim: #8FA4B7;
  --faq-gap: clamp(20px, 3vw, 40px);
}

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 44px) 0 clamp(44px, 7vw, 80px);
  background:
    radial-gradient(130% 100% at 88% -20%, rgba(23, 180, 90, 0.22), transparent 62%),
    linear-gradient(180deg, var(--ink-950), var(--ink-900) 72%);
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line-dark) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-dark) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(120% 90% at 15% 0%, #000 0%, transparent 78%);
  mask-image: radial-gradient(120% 90% at 15% 0%, #000 0%, transparent 78%);
  opacity: 0.55;
  pointer-events: none;
}

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

.page-faq .breadcrumbs {
  margin-bottom: clamp(20px, 4vw, 36px);
}

.page-faq .breadcrumb-link {
  color: var(--steel-soft);
}

.page-faq .breadcrumb-link[aria-current="page"] {
  color: var(--green-soft);
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: center;
}

.page-faq .faq-hero-copy h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 9vw, 4.2rem);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-hero-copy .lead {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--faq-muted);
}

.page-faq .faq-hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px 24px;
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line-dark-strong);
}

.page-faq .faq-hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .stat-num {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--faq-dim);
}

.page-faq .faq-hero-media {
  margin: 0;
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 640;
  object-fit: cover;
}

.page-faq .faq-hero-media .media-cap {
  padding-top: 10px;
}

/* ---------- 热门问题 ---------- */
.page-faq .faq-hot {
  background: var(--paper);
  color: var(--text);
}

.page-faq .hot-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 10px 24px;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-faq .hot-title {
  margin: 0;
  font-size: clamp(1.4rem, 4vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.page-faq .hot-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #4C6478;
}

.page-faq .hot-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--paper-line);
}

.page-faq .hot-item {
  border-bottom: 1px solid var(--paper-line);
}

.page-faq .hot-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 14px;
  padding: 16px 6px;
  color: var(--text);
  text-decoration: none;
  transition: background 180ms var(--ease);
}

.page-faq .hot-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-faq .hot-text {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
  transition: color 180ms var(--ease);
}

.page-faq .hot-arrow {
  font-family: var(--font-mono);
  color: #8CA0AE;
  transition: color 180ms var(--ease), transform 180ms var(--ease);
}

.page-faq .hot-link:hover .hot-text {
  color: #0F8F47;
}

.page-faq .hot-link:hover .hot-arrow {
  color: var(--orange);
  transform: translateX(3px);
}

.page-faq .hot-link:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  position: relative;
  background: var(--ink-900);
  color: var(--white);
}

.page-faq .faq-body::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line-dark) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-dark) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 70%);
  mask-image: linear-gradient(180deg, #000, transparent 70%);
  opacity: 0.3;
  pointer-events: none;
}

.page-faq .faq-body .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-toc {
  min-width: 0;
}

.page-faq .toc-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faq-dim);
}

.page-faq .toc-list {
  display: flex;
  gap: 6px;
  margin: 0 0 10px;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .toc-item {
  flex: 0 0 auto;
}

.page-faq .toc-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  color: var(--steel-soft);
  text-decoration: none;
  white-space: nowrap;
  font-size: 14px;
  line-height: 1.4;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-faq .toc-num {
  font-size: 11px;
  color: var(--green-soft);
}

.page-faq .toc-link:hover,
.page-faq .toc-link:focus-visible {
  border-left-color: var(--green-soft);
  color: var(--white);
  background: rgba(23, 180, 90, 0.08);
}

.page-faq:has(#group-index:target) .toc-link[href="#group-index"],
.page-faq:has(#group-zone:target) .toc-link[href="#group-zone"],
.page-faq:has(#group-change:target) .toc-link[href="#group-change"],
.page-faq:has(#group-legacy:target) .toc-link[href="#group-legacy"] {
  border-left-color: var(--green);
  color: var(--white);
  background: rgba(23, 180, 90, 0.12);
}

.page-faq .toc-foot {
  margin: 0;
  font-size: 13px;
  color: var(--faq-dim);
}

.page-faq .toc-foot-link {
  color: var(--green-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 筛选条 */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .filter-chip {
  padding: 8px 14px;
  border: 1px solid var(--line-dark-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--steel-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-faq .filter-chip:hover {
  border-color: var(--green-soft);
  color: var(--white);
}

.page-faq .filter-chip[aria-pressed="true"] {
  border-color: var(--green);
  background: var(--green);
  color: var(--ink-950);
}

.page-faq .filter-chip:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-faq .filter-status {
  margin: 0 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--faq-dim);
}

/* 分组 */
.page-faq .qa-group {
  padding-top: clamp(22px, 3vw, 32px);
  margin-top: clamp(22px, 3vw, 32px);
  border-top: 1px solid var(--line-dark);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .qa-group:first-of-type {
  padding-top: 24px;
  margin-top: 24px;
  border-top: 0;
}

.page-faq .qa-group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: 8px;
}

.page-faq .qa-group-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--green);
}

.page-faq .qa-group-title {
  margin: 0;
  font-size: clamp(1.25rem, 3.4vw, 1.75rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .qa-group-desc {
  margin: 0 0 10px;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--faq-dim);
}

.page-faq .qa-figure {
  margin: 14px 0 8px;
}

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

.page-faq .qa-figure .media-cap {
  padding-top: 8px;
}

/* 折叠问答 */
.page-faq .qa {
  border-bottom: 1px solid var(--line-dark);
  transition: border-color 180ms var(--ease);
}

.page-faq .qa:first-of-type {
  border-top: 1px solid var(--line-dark);
  margin-top: 12px;
}

.page-faq .qa:hover {
  border-bottom-color: var(--green);
}

.page-faq .qa-q {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--white);
  transition: color 180ms var(--ease);
}

.page-faq .qa-q::-webkit-details-marker {
  display: none;
}

.page-faq .qa-q:hover {
  color: var(--green-soft);
}

.page-faq .qa-q:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.page-faq .qa-caret::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--green-soft);
}

.page-faq .qa[open] .qa-caret::before {
  content: "–";
  color: var(--orange);
}

.page-faq .qa-new {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-left: 8px;
  border-radius: 50%;
  background: var(--orange);
  vertical-align: middle;
}

.page-faq .qa-a {
  max-width: 60ch;
  padding: 0 0 18px;
  font-size: clamp(14px, 1.5vw, 15.5px);
  line-height: 1.8;
  color: var(--faq-muted);
  animation: faq-open 220ms var(--ease) both;
}

.page-faq .qa-a p {
  margin: 0 0 8px;
}

.page-faq .qa-a p:last-child {
  margin-bottom: 0;
}

.page-faq .qa-a a {
  color: var(--green-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa-a a:hover {
  color: var(--orange);
}

@keyframes faq-open {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 联系 ---------- */
.page-faq .faq-help {
  background: linear-gradient(155deg, var(--turf), var(--ink-950) 78%);
  border-top: 1px solid var(--line-dark);
  color: var(--white);
}

.page-faq .help-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

.page-faq .help-title {
  margin: 8px 0 12px;
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.page-faq .help-text {
  margin: 0 0 20px;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-muted);
}

.page-faq .help-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .help-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 10px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--faq-muted);
}

.page-faq .help-list .mono {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--green-soft);
}

.page-faq .help-channels {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-dark-strong);
}

.page-faq .help-channels li {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .hc-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--faq-dim);
}

.page-faq .hc-value {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--white);
  word-break: break-word;
}

.page-faq .hc-note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--faq-dim);
}

.page-faq .hc-link {
  color: var(--green-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .hc-link:hover {
  color: var(--orange);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .hot-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(20px, 3vw, 40px);
  }

  .page-faq .help-channels {
    border-top-color: var(--line-dark-strong);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(150px, 200px) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .page-faq .toc-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .toc-link {
    white-space: normal;
    padding: 10px 12px;
  }

  .page-faq .help-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(28px, 5vw, 64px);
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero-copy .lead {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-a {
    animation: none;
  }

  .page-faq .hot-arrow,
  .page-faq .hot-text,
  .page-faq .qa-q,
  .page-faq .toc-link,
  .page-faq .filter-chip {
    transition: none;
  }
}
<<<END>>>