.page-faq {
  --faq-index-w: 248px;
  --faq-hair: rgba(62, 98, 92, 0.34);
  --faq-hair-soft: rgba(62, 98, 92, 0.16);
  --faq-body-ink: #3E625C;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-faq a {
  color: inherit;
}

.page-faq :is(a, button, summary):focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
  box-shadow: 0 0 0 5px rgba(198, 255, 61, 0.55);
  border-radius: var(--radius);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 36px) 0 clamp(34px, 6vw, 74px);
  color: var(--paper);
  background-color: var(--ink);
  background-image:
    radial-gradient(120% 100% at 86% -10%, rgba(198, 255, 61, 0.16), rgba(7, 28, 26, 0) 58%),
    linear-gradient(rgba(62, 98, 92, 0.24) 1px, transparent 1px),
    linear-gradient(90deg, rgba(62, 98, 92, 0.24) 1px, transparent 1px);
  background-size: auto, 68px 68px, 68px 68px;
  border-bottom: 1px solid var(--wire);
}

.page-faq .faq-hero .breadcrumb__link {
  color: var(--mist);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumb__link:hover {
  color: var(--lime);
}

.page-faq .faq-hero .breadcrumb__current {
  color: rgba(244, 247, 236, 0.72);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  margin-top: clamp(16px, 3vw, 28px);
}

.page-faq .faq-hero .eyebrow {
  color: var(--lime);
  margin: 0;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 6.4vw, 4.3rem);
  line-height: 1.04;
  letter-spacing: -0.01em;
  margin: 12px 0 16px;
  max-width: 16ch;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(0.98rem, 1.6vw, 1.08rem);
  color: rgba(244, 247, 236, 0.82);
}

.page-faq .faq-hero__jumps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-faq .faq-hero__jumps a {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--paper);
  border: 1px solid var(--wire);
  border-radius: var(--radius);
  background: rgba(11, 43, 69, 0.45);
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-hero__jumps a:hover {
  color: var(--lime);
  border-color: var(--lime);
  background: rgba(198, 255, 61, 0.08);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--wire);
  background: var(--ink-deep);
}

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

.page-faq .faq-hero__figure figcaption {
  padding: 9px 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--mist);
  border-top: 1px solid var(--wire);
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  padding: clamp(30px, 5vw, 68px) 0 clamp(36px, 6vw, 84px);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-faq .faq-index {
  border-top: 2px solid var(--ink);
  padding-top: 14px;
}

.page-faq .faq-index .eyebrow {
  color: var(--faq-body-ink);
  margin: 0 0 10px;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
}

.page-faq .faq-index__list a {
  display: flex;
  gap: 8px;
  align-items: baseline;
  padding: 8px 10px;
  font-size: 0.92rem;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.page-faq .faq-index__list a:hover {
  border-left-color: var(--lime);
  background: var(--paper-deep);
  color: var(--ink);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--wire);
}

.page-faq .faq-index__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--faq-hair-soft);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--faq-body-ink);
}

/* ---------- 问答块 ---------- */
.page-faq .faq-block {
  padding-bottom: clamp(26px, 4vw, 42px);
  margin-bottom: clamp(26px, 4vw, 42px);
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-block:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-block__head {
  display: flex;
  gap: 12px;
  align-items: baseline;
  margin-bottom: 10px;
}

.page-faq .faq-block__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--flame);
  flex: 0 0 auto;
}

.page-faq .faq-block h2 {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3.4vw, 2.15rem);
  line-height: 1.18;
  letter-spacing: -0.005em;
  margin: 0;
}

.page-faq .faq-block p {
  margin: 0 0 12px;
  font-size: 0.98rem;
}

.page-faq .faq-block__lede {
  color: var(--faq-body-ink);
  max-width: 60ch;
}

/* 两步路径图 */
.page-faq .route-svg {
  display: block;
  width: 100%;
  height: auto;
  margin: 6px 0 16px;
}

.page-faq .route-svg .rs-box {
  fill: rgba(11, 43, 69, 0.05);
  stroke: var(--wire);
  stroke-width: 1.5;
}

.page-faq .route-svg .rs-box--key {
  fill: rgba(198, 255, 61, 0.26);
  stroke: rgba(198, 255, 61, 0.85);
}

.page-faq .route-svg text {
  font-family: var(--font-mono);
  fill: var(--ink);
}

.page-faq .route-svg .rs-step {
  font-size: 14px;
  letter-spacing: 0.14em;
  fill: var(--flame);
}

.page-faq .route-svg .rs-label {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
}

.page-faq .route-svg .rs-sub {
  font-size: 13px;
  fill: var(--wire);
}

.page-faq .route-svg .rs-line {
  stroke: var(--flame);
  stroke-width: 2;
}

.page-faq .route-svg .rs-arrow {
  fill: var(--flame);
}

/* 图片 */
.page-faq .faq-figure {
  margin: 18px 0 4px;
  border: 1px solid var(--faq-hair);
  background: var(--paper-deep);
}

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

.page-faq .faq-figure figcaption {
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--faq-body-ink);
  border-top: 1px solid var(--faq-hair);
}

/* 定义列表 */
.page-faq .def-list {
  margin: 18px 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .def-list > div {
  display: grid;
  gap: 3px;
  padding: 12px 0;
  border-bottom: 1px solid var(--faq-hair-soft);
}

.page-faq .def-list dt {
  font-weight: 700;
  font-size: 0.96rem;
}

.page-faq .def-list dd {
  margin: 0;
  font-size: 0.94rem;
  color: var(--faq-body-ink);
}

/* 条目列表 */
.page-faq .faq-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-list li {
  display: grid;
  grid-template-columns: minmax(64px, 84px) minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-list__key {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--flame);
  padding-top: 3px;
}

/* 手风琴 */
.page-faq .acc-list {
  display: grid;
  gap: 8px;
  margin-top: 18px;
}

.page-faq .acc {
  border: 1px solid var(--faq-hair);
  background: var(--paper);
  box-shadow: 0 1px 0 var(--faq-hair-soft);
}

.page-faq .acc > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  font-weight: 700;
  font-size: 0.96rem;
  line-height: 1.55;
  transition: background 0.2s ease;
}

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

.page-faq .acc > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1.2;
  color: var(--flame);
}

.page-faq .acc[open] > summary {
  background: var(--paper-deep);
}

.page-faq .acc[open] > summary::after {
  content: "−";
}

.page-faq .acc:hover > summary {
  background: var(--paper-deep);
}

.page-faq .acc__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--wire);
  padding-top: 3px;
  flex: 0 0 auto;
}

.page-faq .acc__body {
  padding: 2px 16px 16px;
}

.page-faq .acc__body p {
  margin: 0 0 8px;
  font-size: 0.94rem;
  color: var(--faq-body-ink);
}

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

/* 术语标签页 */
.page-faq .know-tabs {
  margin-top: 20px;
  padding: clamp(14px, 3vw, 26px);
  background: var(--night);
  border: 1px solid var(--wire);
  color: var(--paper);
}

.page-faq .know-tabs .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.page-faq .know-tabs .tabs__tab {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  padding: 7px 12px;
  border: 1px solid var(--wire);
  border-radius: var(--radius);
  background: transparent;
  color: var(--mist);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .know-tabs .tabs__tab:hover {
  color: var(--lime);
  border-color: var(--lime);
}

.page-faq .know-tabs .tabs__tab[aria-selected="true"] {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
  font-weight: 700;
}

.page-faq .know-tabs .tabs__panel[hidden],
.page-faq .know-tabs .tabs__panel[aria-hidden="true"] {
  display: none;
}

.page-faq .term-grid {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .term {
  padding: 12px 14px;
  border: 1px solid rgba(62, 98, 92, 0.6);
  border-radius: var(--radius);
  background: rgba(4, 17, 15, 0.36);
}

.page-faq .term dt {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--lime);
  margin-bottom: 4px;
}

.page-faq .term dd {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(244, 247, 236, 0.84);
}

/* 延伸入口 */
.page-faq .faq-next {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 18px 0 0;
  padding: 11px 14px;
  background: var(--paper-deep);
  border-left: 3px solid var(--lime);
  font-size: 0.94rem;
}

.page-faq .faq-next__key {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--flame);
}

.page-faq .faq-next a {
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-next a:hover {
  color: var(--flame);
  border-color: var(--flame);
}

/* 联系块 */
.page-faq .contact-slab {
  margin-top: 18px;
  padding: clamp(16px, 3vw, 26px);
  display: grid;
  gap: 16px;
  background: var(--night-deep);
  border: 1px solid var(--wire);
  color: var(--paper);
}

.page-faq .contact-slab .eyebrow {
  color: var(--lime);
  margin: 0 0 8px;
}

.page-faq .contact-slab__copy {
  margin: 0 0 14px;
  font-size: 0.94rem;
  color: rgba(244, 247, 236, 0.82);
}

.page-faq .contact-slab__row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
  margin: 0;
  padding: 8px 0;
  border-bottom: 1px dashed rgba(159, 182, 170, 0.32);
}

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

.page-faq .contact-slab__key {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--mist);
  flex: 0 0 40px;
}

.page-faq .contact-slab__val {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  word-break: break-word;
  color: var(--paper);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .def-list > div {
    grid-template-columns: 170px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 720px) {
  .page-faq .term-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .contact-slab {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 24px;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(32px, 4.5vw, 64px);
    align-items: start;
  }

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

  .page-faq .faq-index__list {
    grid-template-columns: 1fr;
  }
}
<<<END>>>