.page-faq {
  --faq-rail-w: 288px;
  --faq-rail-top: 96px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--green-900);
  color: var(--warm);
  padding-bottom: clamp(56px, 8vw, 116px);
}

.page-faq .faq-hero__slab {
  position: absolute;
  right: -14%;
  bottom: -26%;
  width: 78%;
  height: 96%;
  background: radial-gradient(circle at 34% 34%, rgba(44, 113, 89, 0.55), rgba(11, 36, 28, 0) 66%);
  transform: rotate(-8deg);
  z-index: -1;
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 60px);
  align-items: end;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.2vw, 62px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--warm);
  max-width: 15ch;
}

.page-faq .faq-hero__lead {
  margin: 22px 0 0;
  max-width: 48ch;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.78;
  color: rgba(245, 241, 230, 0.8);
}

.page-faq .faq-hero__actions {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero__gauge {
  position: relative;
  padding: clamp(22px, 3.4vw, 34px);
  background: rgba(18, 58, 46, 0.72);
  border: 1px solid var(--hair);
  clip-path: var(--cut-md);
}

.page-faq .faq-hero__gauge-label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-faq .faq-hero__dial {
  margin: 10px 0 0;
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-faq .faq-hero__dial-num {
  font-size: clamp(72px, 13vw, 124px);
  line-height: 0.86;
  letter-spacing: -0.05em;
  color: var(--glow);
}

.page-faq .faq-hero__dial-unit {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--mist);
}

.page-faq .faq-hero__range {
  margin-top: 30px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: rgba(245, 241, 230, 0.68);
}

.page-faq .faq-hero__range-bar {
  flex: 1;
  height: 6px;
  background: linear-gradient(90deg, var(--gold) 0%, var(--cinnabar) 100%);
}

.page-faq .faq-hero__range-note {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(201, 220, 210, 0.72);
}

/* ---------- 主体双栏骨架 ---------- */

.page-faq .faq-body {
  display: grid;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

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

.page-faq .faq-rail {
  order: -1;
  display: grid;
  gap: 16px;
  min-width: 0;
}

/* ---------- 章节 ---------- */

.page-faq .faq-block {
  scroll-margin-top: var(--faq-rail-top);
}

.page-faq .faq-block + .faq-block {
  margin-top: clamp(52px, 7vw, 100px);
}

.page-faq .faq-block .chapter__title {
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.2;
}

.page-faq .faq-block__lead {
  margin: 18px 0 26px;
  max-width: 60ch;
  font-size: 17px;
  line-height: 1.78;
  color: var(--ink-muted);
}

/* ---------- 折叠问答的页面级微调 ---------- */

.page-faq .accordion {
  border-top: 1px solid rgba(44, 113, 89, 0.26);
}

.page-faq .accordion__item {
  border-bottom: 1px solid rgba(44, 113, 89, 0.26);
}

.page-faq .accordion__btn {
  position: relative;
  padding: 18px 44px 18px 22px;
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .accordion__btn::before {
  content: "";
  position: absolute;
  left: 0;
  top: 26px;
  width: 8px;
  height: 2px;
  background: var(--cinnabar);
  transition: width 0.3s var(--ease);
}

.page-faq .accordion__item[open] > .accordion__btn::before {
  width: 20px;
}

.page-faq .accordion__btn::after {
  content: "+";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--cinnabar);
}

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

.page-faq .accordion__panel {
  padding: 0 44px 22px 22px;
}

.page-faq .accordion__panel p {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink-muted);
}

.page-faq .accordion__panel a {
  color: var(--cinnabar);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .accordion__btn:focus-visible,
.page-faq .accordion__panel a:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 3px;
}

/* ---------- 图与内联图版 ---------- */

.page-faq .faq-figure,
.page-faq .faq-shot {
  margin: 0 0 28px;
}

.page-faq .faq-figure {
  padding: clamp(18px, 3vw, 28px);
  background: var(--green-900);
  clip-path: var(--cut-md);
}

.page-faq .faq-svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-svg__src rect {
  fill: var(--green-700);
}

.page-faq .faq-svg__label text {
  fill: var(--warm);
  font-family: var(--font-body);
  font-size: 18px;
}

.page-faq .faq-svg__flow path {
  fill: none;
  stroke: var(--gold);
  stroke-width: 2;
  stroke-dasharray: 6 6;
}

.page-faq .faq-svg__node polygon {
  fill: var(--cinnabar);
}

.page-faq .faq-svg__out rect {
  fill: var(--green-700);
}

.page-faq .faq-svg__out text {
  fill: var(--glow);
  font-family: var(--font-mono);
  font-size: 17px;
}

.page-faq .faq-figure__caption {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(201, 220, 210, 0.72);
}

.page-faq .faq-shot .media__frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .faq-shot .media__caption {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-muted);
}

/* ---------- 粘性刻度栏 ---------- */

.page-faq .faq-rail__meter {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  background: var(--green-800);
  color: var(--warm);
}

.page-faq .faq-rail__meter-label,
.page-faq .faq-rail__meter-range {
  display: none;
}

.page-faq .faq-rail__meter-value {
  margin: 0;
  font-size: 34px;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--glow);
  white-space: nowrap;
}

.page-faq .faq-rail__meter-value span {
  margin-left: 8px;
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0;
  color: var(--mist);
}

.page-faq .faq-rail__scale {
  flex: 1;
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 28px;
}

.page-faq .faq-rail__scale span {
  flex: 1;
  height: 30%;
  background: var(--green-600);
}

.page-faq .faq-rail__scale span:nth-child(1) { height: 22%; }
.page-faq .faq-rail__scale span:nth-child(2) { height: 34%; }
.page-faq .faq-rail__scale span:nth-child(3) { height: 28%; }
.page-faq .faq-rail__scale span:nth-child(4) { height: 46%; }
.page-faq .faq-rail__scale span:nth-child(5) { height: 58%; }
.page-faq .faq-rail__scale span:nth-child(6) { height: 52%; }
.page-faq .faq-rail__scale span:nth-child(7) { height: 70%; }
.page-faq .faq-rail__scale span:nth-child(8) { height: 64%; }
.page-faq .faq-rail__scale span:nth-child(9) { height: 84%; }
.page-faq .faq-rail__scale span:nth-child(10) { height: 100%; background: var(--cinnabar); }

.page-faq .faq-rail__nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.page-faq .faq-rail__nav::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail__link {
  flex: none;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--hair);
  font-size: 14px;
  line-height: 1.4;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .faq-rail__link span {
  font-size: 11px;
  color: var(--cinnabar);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--cinnabar);
  color: var(--cinnabar);
  outline: none;
}

/* ---------- 桌面布局 ---------- */

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr) var(--faq-rail-w);
  }

  .page-faq .faq-rail {
    order: 0;
    position: sticky;
    top: var(--faq-rail-top);
    align-self: start;
    gap: 22px;
  }

  .page-faq .faq-rail__meter {
    display: block;
    padding: 22px;
    clip-path: var(--cut-md);
  }

  .page-faq .faq-rail__meter-label {
    display: block;
    margin: 0;
    font-size: 11px;
    letter-spacing: 0.2em;
    color: var(--gold);
  }

  .page-faq .faq-rail__meter-value {
    margin-top: 12px;
    font-size: 58px;
  }

  .page-faq .faq-rail__meter-value span {
    font-size: 14px;
  }

  .page-faq .faq-rail__scale {
    height: 46px;
    margin-top: 18px;
  }

  .page-faq .faq-rail__meter-range {
    display: block;
    margin: 16px 0 0;
    font-size: 14px;
    letter-spacing: 0.06em;
    color: var(--glow);
  }

  .page-faq .faq-rail__nav {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    width: 100%;
    padding: 13px 0 13px 16px;
    border: 0;
    border-left: 2px solid transparent;
    white-space: normal;
    transition: border-color 0.25s var(--ease), color 0.25s var(--ease), padding-left 0.25s var(--ease);
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    border-left-color: var(--cinnabar);
    padding-left: 22px;
  }

  .page-faq .faq-shot--right {
    width: 68%;
    margin-left: auto;
  }
}

@media (min-width: 1240px) {
  .page-faq .faq-block__lead,
  .page-faq .faq-block .accordion {
    max-width: 88%;
  }
}

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