.page-faq {
  --faq-term-col: 184px;
  --faq-hair: rgba(44, 53, 50, .85);
  --faq-dim-line: rgba(241, 243, 236, .1);
  display: block;
  padding-bottom: clamp(40px, 8vw, 96px);
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-top: clamp(18px, 3vw, 34px);
  padding: clamp(26px, 5vw, 60px) clamp(18px, 4vw, 52px) clamp(30px, 5vw, 56px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(63, 224, 206, .08), transparent 58%),
    linear-gradient(168deg, #10201B 0%, #0A0E0D 68%);
  border: 1px solid var(--faq-hair);
  border-radius: var(--r-panel);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 11px;
  border: 1px dashed rgba(241, 243, 236, .07);
  border-radius: calc(var(--r-panel) - 8px);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: repeating-linear-gradient(180deg, var(--clay) 0 7px, transparent 7px 19px);
  opacity: .5;
  pointer-events: none;
}

.page-faq .faq-hero__lede {
  max-width: 62ch;
  margin-top: 18px;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 24px;
}

.page-faq .faq-hero__note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--dim);
}

/* ---------- 页内坐标索引 ---------- */
.page-faq .faq-anchors {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--faq-hair);
  border: 1px solid var(--faq-hair);
  border-radius: 12px;
  overflow: hidden;
}

.page-faq .faq-anchors__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 12px 14px;
  background: var(--ink);
  color: var(--dim);
  font-size: 13px;
  text-decoration: none;
  transition: background var(--dur), color var(--dur);
}

.page-faq .faq-anchors__link:hover,
.page-faq .faq-anchors__link:focus-visible {
  background: var(--panel);
  color: var(--paper);
}

.page-faq .faq-anchors__code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--cyan);
}

/* ---------- 章节头 ---------- */
.page-faq .faq-block__head {
  max-width: 760px;
}

.page-faq .faq-block__lede {
  margin-top: 14px;
  color: var(--dim);
}

/* ---------- 三个术语 ---------- */
.page-faq .faq-terms {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2.4vw, 24px);
  margin-top: clamp(22px, 3vw, 36px);
}

.page-faq .faq-term {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--panel);
  border: 1px solid var(--faq-hair);
  border-radius: var(--r-panel);
  transition: border-color var(--dur);
}

.page-faq .faq-term:hover {
  border-color: rgba(63, 224, 206, .5);
}

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

.page-faq .faq-term .yb-text {
  flex: 1 1 auto;
  margin: 0;
}

/* ---------- 标尺 ---------- */
.page-faq .faq-scale {
  margin-top: auto;
}

.page-faq .faq-scale__track {
  display: flex;
  gap: 3px;
  height: 10px;
}

.page-faq .faq-scale__seg {
  flex: 1 1 0;
  background: rgba(78, 107, 84, .55);
  border-radius: 2px;
}

.page-faq .faq-scale__track--six .faq-scale__seg:nth-child(1),
.page-faq .faq-scale__track--six .faq-scale__seg:nth-child(6) {
  background: rgba(63, 224, 206, .42);
}

.page-faq .faq-scale__track--base {
  position: relative;
  display: block;
  height: 10px;
  background: rgba(44, 53, 50, .92);
  border-radius: 2px;
  overflow: hidden;
}

.page-faq .faq-scale__fill {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--moss), var(--cyan));
}

.page-faq .faq-scale__fill--base {
  width: 60%;
}

.page-faq .faq-scale__legend {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .02em;
  color: var(--dim-2);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: clamp(26px, 3.4vw, 42px) 0 0;
}

.page-faq .faq-figure--tail {
  margin-top: clamp(28px, 4vw, 46px);
}

/* ---------- 六项统计 ---------- */
.page-faq .faq-defs {
  margin: clamp(22px, 3vw, 36px) 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-def {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: clamp(18px, 2.4vw, 26px) 0;
  border-bottom: 1px solid var(--faq-hair);
  transition: background var(--dur);
}

.page-faq .faq-def:hover {
  background: rgba(16, 32, 27, .55);
}

.page-faq .faq-def__term {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2vw, 22px);
  color: var(--paper);
}

.page-faq .faq-def__code {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-faq .faq-def__body {
  margin: 0;
}

.page-faq .faq-def__body p {
  margin: 0;
}

/* ---------- 半场与区间对照 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .faq-split__col {
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--panel);
  border: 1px solid var(--faq-hair);
  border-left: 3px solid var(--moss);
  border-radius: 0 var(--r-panel) var(--r-panel) 0;
}

.page-faq .faq-split__col--alt {
  border-left-color: var(--cyan);
  background:
    linear-gradient(180deg, rgba(63, 224, 206, .05), transparent 62%),
    var(--panel);
}

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

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

.page-faq .faq-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.85;
  letter-spacing: .02em;
  color: var(--dim);
}

.page-faq .faq-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 8px;
  height: 1.5px;
  background: var(--clay);
}

.page-faq .faq-note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 16px 18px;
  max-width: 68ch;
  border-left: 2px solid var(--cyan);
  border-radius: 0 12px 12px 0;
  background: var(--glass);
  font-size: 15px;
  line-height: 1.9;
  color: var(--dim);
}

/* ---------- 定位球计算步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: clamp(22px, 3vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(12px, 2vw, 18px);
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  padding: clamp(16px, 2.2vw, 24px);
  background: var(--panel);
  border: 1px solid var(--faq-hair);
  border-radius: var(--r-panel);
  transition: border-color var(--dur);
}

.page-faq .faq-step:hover {
  border-color: rgba(63, 224, 206, .45);
}

.page-faq .faq-step__code {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--lime);
  padding-top: 4px;
}

.page-faq .faq-step .yb-h3 {
  margin: 0 0 8px;
}

.page-faq .faq-step .yb-text {
  margin: 0;
}

/* ---------- 档位刻度 ---------- */
.page-faq .faq-gauge {
  display: grid;
  gap: 14px;
  margin-top: clamp(22px, 3vw, 34px);
  padding: clamp(18px, 2.6vw, 30px);
  background: linear-gradient(180deg, rgba(16, 32, 27, .92), rgba(10, 14, 13, .96));
  border: 1px solid var(--faq-hair);
  border-radius: var(--r-panel);
}

.page-faq .faq-gauge__row {
  display: grid;
  grid-template-columns: clamp(62px, 16vw, 96px) 1fr clamp(32px, 8vw, 48px);
  align-items: center;
  gap: 10px;
}

.page-faq .faq-gauge__name {
  display: flex;
  flex-direction: column;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--paper);
}

.page-faq .faq-gauge__sub {
  font-size: 10px;
  color: var(--dim-2);
}

.page-faq .faq-gauge__track {
  position: relative;
  display: block;
  height: 12px;
  background: rgba(44, 53, 50, .92);
  border-radius: 2px;
}

.page-faq .faq-gauge__track::after {
  content: "";
  position: absolute;
  top: -4px;
  bottom: -4px;
  left: 60%;
  width: 1px;
  background: var(--red);
}

.page-faq .faq-gauge__bar {
  display: block;
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--moss), var(--cyan));
}

.page-faq .faq-gauge__bar--a { width: 52.5%; }
.page-faq .faq-gauge__bar--b { width: 65%; }
.page-faq .faq-gauge__bar--c { width: 75%; }
.page-faq .faq-gauge__bar--d { width: 85%; }

.page-faq .faq-gauge__val {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 600;
  color: var(--lime);
  text-align: right;
}

.page-faq .faq-gauge__foot {
  margin: 4px 0 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--dim-2);
}

/* ---------- 常见误读 ---------- */
.page-faq .faq-misreads {
  display: grid;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-faq .faq-misread {
  background: var(--panel);
  border: 1px solid var(--faq-hair);
  border-radius: 14px;
  transition: border-color var(--dur), background var(--dur);
}

.page-faq .faq-misread[open] {
  border-color: rgba(63, 224, 206, .5);
  background:
    linear-gradient(180deg, rgba(63, 224, 206, .05), transparent 42%),
    var(--panel);
}

.page-faq .faq-misread__q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: clamp(14px, 2vw, 20px) clamp(16px, 2.4vw, 24px);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-misread__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
  border-radius: 14px;
}

.page-faq .faq-misread__code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--red);
  flex: none;
}

.page-faq .faq-misread__title {
  flex: 1 1 auto;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 1.8vw, 19px);
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .faq-misread__sign {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
}

.page-faq .faq-misread__sign::before,
.page-faq .faq-misread__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform var(--dur), opacity var(--dur);
}

.page-faq .faq-misread__sign::before {
  left: 0;
  top: 6.5px;
  width: 14px;
  height: 1.5px;
}

.page-faq .faq-misread__sign::after {
  left: 6.5px;
  top: 0;
  width: 1.5px;
  height: 14px;
}

.page-faq .faq-misread[open] .faq-misread__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-misread__a {
  padding: 16px clamp(16px, 2.4vw, 24px) clamp(16px, 2.2vw, 22px);
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-misread__a .yb-text {
  margin: 0;
  max-width: 68ch;
}

/* ---------- 勘误流程 ---------- */
.page-faq .faq-errata__panel {
  position: relative;
  padding: clamp(24px, 4vw, 48px) clamp(18px, 3vw, 44px);
  background: var(--ink);
  border: 1px solid var(--faq-hair);
  border-radius: var(--r-panel);
}

.page-faq .faq-errata__panel::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(63, 224, 206, .14);
  border-radius: calc(var(--r-panel) - 6px);
  pointer-events: none;
}

.page-faq .faq-checklist {
  list-style: none;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--faq-dim-line);
  font-size: 15px;
  line-height: 1.85;
  color: var(--dim);
}

.page-faq .faq-checklist__code {
  flex: none;
  padding-top: 1px;
  font-family: var(--font-mono);
  color: var(--clay);
}

.page-faq .faq-errata__meta {
  display: grid;
  gap: 12px;
  max-width: 68ch;
  margin-top: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-errata__meta p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  letter-spacing: .02em;
  color: var(--dim);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-anchors {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 760px) {
  .page-faq .faq-def {
    grid-template-columns: var(--faq-term-col) 1fr;
    gap: clamp(20px, 3vw, 40px);
    align-items: start;
  }

  .page-faq .faq-step {
    grid-template-columns: 66px 1fr;
    gap: 22px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-terms {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-split {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-anchors {
    grid-template-columns: repeat(6, 1fr);
  }
}

@media (max-width: 420px) {
  .page-faq .faq-scale__legend {
    font-size: 9px;
  }

  .page-faq .faq-misread__q {
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-anchors__link,
  .page-faq .faq-term,
  .page-faq .faq-def,
  .page-faq .faq-step,
  .page-faq .faq-misread,
  .page-faq .faq-misread__sign::before,
  .page-faq .faq-misread__sign::after {
    transition: none;
  }
}
<<<END>>>