.page-faq {
  --faq-radius: 2px;
  background: var(--ink-950);
  color: var(--mist-100);
  padding-bottom: 8px;
}

.page-faq .wrap {
  padding-top: 22px;
  padding-bottom: 88px;
}

.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 30px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--steel-500);
}

.page-faq .faq-crumb a {
  color: var(--mist-300);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-crumb a:hover {
  color: var(--cyan-300);
  border-bottom-color: var(--cyan-400);
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: 30px;
}

.page-faq .faq-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

.page-faq h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.35rem, 7vw, 4.4rem);
  line-height: 1.06;
  letter-spacing: 0.04em;
  color: var(--mist-100);
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 46ch;
  font-size: 16.5px;
  line-height: 1.88;
  color: var(--mist-300);
}

.page-faq .faq-lead--sub {
  margin-top: 16px;
  padding-left: 14px;
  border-left: 2px solid var(--amber-400);
  font-size: 15px;
  color: var(--steel-500);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: var(--ink-900);
  box-shadow: 0 24px 60px -44px rgba(48, 224, 208, 0.55);
}

.page-faq .faq-hero__figure img,
.page-faq .ver-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* 章节节奏 */
.page-faq .faq-sec {
  margin-top: 72px;
}

.page-faq .sec-index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

.page-faq .sec-title {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 3.6vw, 2.35rem);
  line-height: 1.22;
  letter-spacing: 0.03em;
  color: var(--mist-100);
}

.page-faq .sec-lead {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist-300);
}

/* 三步路径 */
.page-faq .step-line {
  display: none;
  margin: 26px 0 0;
}

.page-faq .step-line svg {
  display: block;
  width: 100%;
  height: 52px;
}

.page-faq .steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .step {
  padding: 20px 0 22px;
  border-top: 1px solid var(--line);
}

.page-faq .step:last-child {
  border-bottom: 1px solid var(--line);
}

.page-faq .step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber-400);
}

.page-faq .step__title {
  margin: 10px 0 10px;
  font-size: 18.5px;
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.4;
  color: var(--mist-100);
}

.page-faq .step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-300);
}

/* 资源与通道对照 */
.page-faq .compare {
  margin-top: 28px;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
}

.page-faq .panel {
  background: var(--ink-950);
  padding: 26px 22px 24px;
  border-left: 3px solid transparent;
}

.page-faq .panel--cyan {
  border-left-color: var(--cyan-400);
  background: linear-gradient(160deg, rgba(48, 224, 208, 0.09), rgba(6, 18, 31, 0) 62%), var(--ink-950);
}

.page-faq .panel--amber {
  border-left-color: var(--amber-400);
  background: linear-gradient(160deg, rgba(242, 180, 94, 0.09), rgba(6, 18, 31, 0) 62%), var(--ink-950);
}

.page-faq .panel__title {
  margin: 0 0 6px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--mist-100);
}

.page-faq .panel__meta {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--steel-500);
}

.page-faq .panel p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-300);
}

.page-faq .panel ul {
  margin: 0;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist-300);
}

.page-faq .panel li + li {
  margin-top: 6px;
}

/* 版本号 */
.page-faq .ver-split {
  margin-top: 28px;
  display: grid;
  gap: 32px;
}

.page-faq .prose {
  margin: 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--mist-300);
}

.page-faq .meta {
  font-family: var(--font-mono);
  font-size: 0.95em;
  color: var(--cyan-300);
  letter-spacing: 0.02em;
}

.page-faq .ver-line {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 8px;
  margin: 24px 0 8px;
}

.page-faq .ver-seg {
  font-family: var(--font-mono);
  font-size: clamp(20px, 5vw, 28px);
  line-height: 1;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--ink-900);
  color: var(--mist-100);
}

.page-faq .ver-seg--major {
  border-color: rgba(48, 224, 208, 0.5);
  background: rgba(48, 224, 208, 0.16);
  color: var(--cyan-300);
}

.page-faq .ver-seg--minor {
  border-color: rgba(232, 241, 245, 0.24);
  background: rgba(232, 241, 245, 0.08);
  color: var(--mist-100);
}

.page-faq .ver-seg--batch {
  border-color: rgba(242, 180, 94, 0.5);
  background: rgba(242, 180, 94, 0.16);
  color: var(--amber-300);
}

.page-faq .ver-dot {
  align-self: center;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--steel-500);
}

.page-faq .ver-caption {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--steel-500);
}

.page-faq .ver-legend {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .ver-legend li {
  display: grid;
  gap: 6px;
  padding: 14px 0;
  border-bottom: 1px dashed rgba(40, 70, 94, 0.9);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist-300);
}

.page-faq .ver-legend b {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--cyan-300);
}

.page-faq .ver-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: var(--ink-900);
}

/* 反馈准备 */
.page-faq .prep-grid {
  margin-top: 28px;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
}

.page-faq .prep-item {
  background: var(--ink-950);
  padding: 22px 20px;
}

.page-faq .prep-item__title {
  display: flex;
  gap: 10px;
  align-items: baseline;
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--mist-100);
}

.page-faq .prep-item__title span {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--amber-400);
}

.page-faq .prep-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist-300);
}

.page-faq .prep-tail {
  margin: 20px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-300);
}

.page-faq .prep-tail a,
.page-faq .faq-a a {
  color: var(--cyan-300);
  text-decoration: none;
  border-bottom: 1px solid rgba(48, 224, 208, 0.45);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .prep-tail a:hover,
.page-faq .faq-a a:hover {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

/* 筛选与问答 */
.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 12px;
}

.page-faq .filter-btn {
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: 0.04em;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: transparent;
  color: var(--mist-300);
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .filter-btn:hover {
  color: var(--cyan-300);
  border-color: var(--cyan-400);
}

.page-faq .filter-btn:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 2px;
}

.page-faq .filter-btn.is-active {
  background: var(--cyan-400);
  border-color: var(--cyan-400);
  color: var(--ink-950);
  font-weight: 600;
}

.page-faq .filter-status {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--steel-500);
}

.page-faq .faq-list {
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-item[hidden] {
  display: none;
}

.page-faq .faq-item summary {
  position: relative;
  display: flex;
  gap: 12px;
  align-items: baseline;
  list-style: none;
  cursor: pointer;
  padding: 18px 38px 18px 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--mist-100);
  transition: color 0.18s var(--ease);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan-400);
  transition: transform 0.2s var(--ease), color 0.18s var(--ease);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--amber-400);
}

.page-faq .faq-item summary:hover {
  color: var(--cyan-300);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 3px;
}

.page-faq .faq-cat {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--amber-400);
  padding-top: 3px;
}

.page-faq .faq-a {
  margin: 0;
  padding: 0 30px 22px 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist-300);
}

/* 联系方式 */
.page-faq .contact-grid {
  margin-top: 28px;
  display: grid;
  gap: 36px;
}

.page-faq .contact-mail {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: clamp(1.02rem, 4.6vw, 1.5rem);
  letter-spacing: 0.02em;
  color: var(--cyan-300);
  word-break: break-all;
}

.page-faq .contact-line {
  display: grid;
  gap: 5px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.page-faq .contact-line__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--steel-500);
}

.page-faq .contact-line__value {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--mist-100);
}

.page-faq .contact-line__value--mono {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.page-faq .contact-note {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist-300);
}

.page-faq .aside-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--amber-400);
}

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

.page-faq .link-list li {
  border-bottom: 1px solid var(--line);
}

.page-faq .link-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
  font-size: 15px;
  color: var(--mist-100);
  text-decoration: none;
  transition: color 0.18s var(--ease);
}

.page-faq .link-list a::after {
  content: "→";
  font-family: var(--font-mono);
  color: var(--cyan-400);
  transition: transform 0.2s var(--ease);
}

.page-faq .link-list a:hover {
  color: var(--cyan-300);
}

.page-faq .link-list a:hover::after {
  transform: translateX(3px);
}

/* 平板 */
@media (min-width: 720px) {
  .page-faq .wrap {
    padding-top: 30px;
  }

  .page-faq .prep-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .prep-item {
    padding: 24px 22px;
  }

  .page-faq .faq-item summary {
    font-size: 17px;
  }

  .page-faq .faq-a {
    padding-left: 0;
    padding-right: 60px;
  }
}

/* 桌面 */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 56px;
    align-items: center;
  }

  .page-faq .faq-sec {
    margin-top: 96px;
  }

  .page-faq .step-line {
    display: block;
  }

  .page-faq .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 40px;
  }

  .page-faq .step {
    padding: 20px 0 0;
  }

  .page-faq .step:last-child {
    border-bottom: 0;
  }

  .page-faq .compare {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .panel {
    padding: 32px 30px 30px;
  }

  .page-faq .ver-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .ver-legend li {
    grid-template-columns: 92px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }

  .page-faq .contact-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-aside {
    padding-top: 4px;
  }
}

/* 动效收敛 */
@media (prefers-reduced-motion: reduce) {
  .page-faq .filter-btn,
  .page-faq .link-list a,
  .page-faq .link-list a::after,
  .page-faq .faq-item summary,
  .page-faq .faq-item summary::after,
  .page-faq .faq-crumb a {
    transition: none;
  }
}
<<<END>>>