.page-faq {
  --tone-1: #4FE3D0;
  --tone-2: #41D2C2;
  --tone-3: #34BEB1;
  --tone-4: #2AA79B;
  --tone-5: #24938A;
  --tone-6: #1F7F77;
  --tone-7: #196B65;
  --tone-8: #145753;
  --tone-9: #0F4442;
  --faq-gap: clamp(56px, 8vw, 112px);
  padding-bottom: clamp(64px, 9vw, 120px);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .hero {
  padding-top: clamp(26px, 4.5vw, 60px);
}

.page-faq .hero__title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(30px, 6.4vw, 56px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  margin: 16px 0 0;
  color: var(--text);
}

.page-faq .hero__lead {
  margin: 20px 0 0;
  max-width: 66ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .hero__stats {
  margin-top: clamp(30px, 4vw, 48px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 22px;
}

.page-faq .stat {
  border-top: 1px solid var(--line);
  padding-top: 14px;
  min-width: 0;
}

.page-faq .stat__num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--gold);
}

.page-faq .stat__unit {
  font-size: 0.48em;
  margin-left: 3px;
  color: var(--muted);
}

.page-faq .stat__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .hero__figure {
  margin-top: clamp(32px, 5vw, 60px);
}

.page-faq .figure__frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-md);
}

/* ---------- 分区通用 ---------- */
.page-faq .block {
  margin-top: var(--faq-gap);
}

.page-faq .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.page-faq .lex-intro {
  margin: clamp(18px, 2.4vw, 28px) 0 0;
  max-width: 72ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .glossary-figure {
  margin: clamp(26px, 3.6vw, 46px) auto 0;
  max-width: 460px;
}

/* ---------- 术语布局 ---------- */
.page-faq .glossary-layout {
  margin-top: clamp(30px, 4vw, 54px);
}

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

.page-faq .rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 14px;
  border: 1px solid transparent;
  border-radius: var(--pill);
  font-size: 14px;
  line-height: 1.4;
  color: var(--muted);
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.page-faq .rail__link:hover {
  color: var(--text);
  border-color: var(--line);
}

.page-faq .rail__link[aria-current="true"] {
  color: var(--cyan);
  background: rgba(79, 227, 208, 0.1);
  border-color: rgba(79, 227, 208, 0.35);
}

.page-faq .rail__idx {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--teal);
}

.page-faq .rail__link[aria-current="true"] .rail__idx {
  color: var(--cyan);
}

/* ---------- 语义组 ---------- */
.page-faq .gloss-group {
  margin-top: clamp(34px, 4.5vw, 54px);
  padding-top: clamp(24px, 3vw, 38px);
  border-top: 1px solid var(--line);
}

.page-faq .gloss-group:first-child {
  margin-top: 0;
}

.page-faq .gloss-group:nth-of-type(1) { --gtone: var(--tone-1); }
.page-faq .gloss-group:nth-of-type(2) { --gtone: var(--tone-2); }
.page-faq .gloss-group:nth-of-type(3) { --gtone: var(--tone-3); }
.page-faq .gloss-group:nth-of-type(4) { --gtone: var(--tone-4); }
.page-faq .gloss-group:nth-of-type(5) { --gtone: var(--tone-5); }
.page-faq .gloss-group:nth-of-type(6) { --gtone: var(--tone-6); }
.page-faq .gloss-group:nth-of-type(7) { --gtone: var(--tone-7); }
.page-faq .gloss-group:nth-of-type(8) { --gtone: var(--tone-8); }
.page-faq .gloss-group:nth-of-type(9) { --gtone: var(--tone-9); }

.page-faq .gloss-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px;
}

.page-faq .gloss-group__idx {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gtone, var(--cyan));
}

.page-faq .gloss-group__title {
  margin: 0;
  font-size: clamp(18px, 2.2vw, 23px);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-faq .gloss-group__count {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 词条 ---------- */
.page-faq .term-list {
  margin-top: 18px;
}

.page-faq .term {
  padding: clamp(18px, 2.2vw, 26px) 0;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .term__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}

.page-faq .term__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gtone, var(--teal));
}

.page-faq .term__name {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-faq .term__cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-faq .term__side {
  min-width: 0;
  border-left: 2px solid var(--line);
  padding-left: 14px;
}

.page-faq .term__side--mobile {
  border-left-color: rgba(79, 227, 208, 0.6);
}

.page-faq .term__side--tablet {
  border-left-color: rgba(42, 167, 155, 0.75);
}

.page-faq .term__label {
  display: block;
  margin-bottom: 7px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
}

.page-faq .term__side--mobile .term__label {
  color: var(--cyan);
}

.page-faq .term__side--tablet .term__label {
  color: var(--teal);
}

.page-faq .term__side p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

/* ---------- 问答 ---------- */
.page-faq .faq-block {
  margin-top: var(--faq-gap);
}

.page-faq .faq-group {
  margin-top: clamp(30px, 4vw, 50px);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-sub {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 26px 0 4px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .faq-sub::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

.page-faq .qa-list {
  margin-top: 8px;
}

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

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

.page-faq .qa > summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 18px 46px 18px 0;
  font-size: clamp(15px, 1.7vw, 16.5px);
  font-weight: 600;
  line-height: 1.65;
  color: var(--text);
  transition: color 0.2s ease;
}

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

.page-faq .qa > summary::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 24px;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.25s ease;
}

.page-faq .qa[open] > summary::after {
  transform: rotate(-135deg);
}

.page-faq .qa > summary:hover,
.page-faq .qa[open] > summary {
  color: var(--cyan);
}

.page-faq .qa__body {
  padding: 0 0 22px;
  max-width: 78ch;
}

.page-faq .qa__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 提交面板 ---------- */
.page-faq .submit-panel {
  margin-top: clamp(20px, 2.6vw, 32px);
  padding: clamp(22px, 3.2vw, 44px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(158deg, rgba(79, 227, 208, 0.09) 0%, rgba(12, 36, 54, 0.92) 56%, rgba(6, 23, 38, 0.95) 100%);
}

.page-faq .submit-panel p {
  margin: 0 0 16px;
  max-width: 74ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

.page-faq .submit-panel p:last-of-type {
  margin-bottom: 0;
}

.page-faq .submit-panel__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px !important;
}

/* ---------- 结尾 ---------- */
.page-faq .cta {
  margin-top: var(--faq-gap);
  padding-top: clamp(30px, 4vw, 54px);
  border-top: 1px solid var(--line);
}

.page-faq .cta__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .cta__lead {
  margin: 18px 0 0;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 860px) {
  .page-faq .hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }

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

  .page-faq .term__side {
    border-left: 0;
    padding-left: 0;
  }

  .page-faq .term__side--mobile {
    padding-right: clamp(18px, 2.4vw, 34px);
    border-right: 1px solid var(--line);
  }

  .page-faq .term__side--tablet {
    padding-left: clamp(18px, 2.4vw, 34px);
  }
}

@media (min-width: 1024px) {
  .page-faq .glossary-layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 68px);
    align-items: start;
  }

  .page-faq .glossary-layout .rail {
    position: sticky;
    top: calc(var(--head-h) + 24px);
    padding: 4px 0;
  }

  .page-faq .rail__list {
    flex-direction: column;
    gap: 4px;
  }

  .page-faq .rail__link {
    width: 100%;
  }

  .page-faq .gloss-group:first-child {
    margin-top: 4px;
  }
}

@media (min-width: 1280px) {
  .page-faq .glossary-figure {
    margin-left: 0;
    margin-right: 0;
    max-width: 520px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .rail__link,
  .page-faq .qa > summary,
  .page-faq .qa > summary::after {
    transition: none;
  }
}
<<<END>>>