.page-faq {
  --faq-cut: 14px;
  --faq-line-paper: rgba(23, 24, 18, .16);
  background: var(--c-ink);
  color: var(--c-paper-hi);
  overflow-x: clip;
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq [id] {
  scroll-margin-top: 92px;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  padding-top: clamp(18px, 3vw, 30px);
  padding-bottom: clamp(4px, 1vw, 10px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(18px, 4vw, 42px) 0 clamp(30px, 6vw, 68px);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

@media (min-width: 1000px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

.page-faq .faq-hero__label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-mint);
}

.page-faq .faq-hero__label::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--c-mint);
  transform: skewX(-20deg);
}

.page-faq h1 {
  max-width: 20ch;
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-size: clamp(32px, 6.2vw, 64px);
  line-height: 1.03;
  letter-spacing: -.02em;
  font-weight: 700;
  color: var(--c-paper-hi);
}

.page-faq .faq-hero__lede {
  max-width: 62ch;
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-size: clamp(15.5px, 1.5vw, 17px);
  line-height: 1.78;
  color: rgba(244, 240, 229, .78);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero__visual {
  position: relative;
}

.page-faq .faq-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(.78) contrast(1.08) brightness(.86);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, var(--faq-cut) 100%, 0 calc(100% - var(--faq-cut)));
}

.page-faq .faq-hero__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .55;
  background-image:
    linear-gradient(to right, rgba(69, 224, 174, .14) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(69, 224, 174, .14) 1px, transparent 1px);
  background-size: 46px 46px;
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, var(--faq-cut) 100%, 0 calc(100% - var(--faq-cut)));
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(22px, 3.5vw, 44px);
  padding-bottom: clamp(50px, 8vw, 96px);
}

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

@media (min-width: 1040px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr) 252px;
    align-items: start;
  }
  .page-faq .faq-main { order: 1; }
  .page-faq .faq-side { order: 2; }
}

/* ---------- 右侧术语索引 ---------- */
.page-faq .faq-side {
  order: -1;
  padding-top: 14px;
  border-top: 1px solid var(--line-dark);
}

@media (min-width: 1040px) {
  .page-faq .faq-side {
    position: sticky;
    top: 84px;
    padding: 6px 0 6px 20px;
    border-top: none;
    border-left: 1px solid var(--line-dark);
  }
}

.page-faq .faq-side__title {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-mute);
}

.page-faq .faq-side__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-side__list li {
  flex: 0 0 auto;
}

.page-faq .faq-side__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 10px;
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--c-paper-hi);
  text-decoration: none;
  border: 1px solid var(--line-dark);
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}

.page-faq .faq-side__no {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--c-mute);
}

.page-faq .faq-side__link:hover {
  color: var(--c-mint);
  border-color: var(--line-mint);
}

.page-faq .faq-side__link:focus-visible {
  outline: 2px solid var(--c-mint);
  outline-offset: 2px;
  color: var(--c-mint);
}

.page-faq .faq-side__note {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-mute);
}

@media (min-width: 1040px) {
  .page-faq .faq-side__list {
    display: block;
    padding: 0;
    overflow: visible;
  }
  .page-faq .faq-side__list li {
    display: block;
  }
  .page-faq .faq-side__link {
    padding: 6px 4px 6px 10px;
    white-space: normal;
    border: none;
    border-left: 2px solid transparent;
    clip-path: none;
  }
  .page-faq .faq-side__note {
    display: block;
    padding-left: 10px;
    font-size: 12px;
  }
}

/* ---------- 章节画板 ---------- */
.page-faq .faq-block {
  position: relative;
  padding: clamp(22px, 4vw, 44px) 0;
}

.page-faq .faq-block + .faq-block {
  margin-top: clamp(6px, 1.2vw, 14px);
}

.page-faq .faq-block--paper,
.page-faq .faq-block--night {
  padding: clamp(24px, 4.4vw, 48px) clamp(18px, 3.6vw, 44px);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, var(--faq-cut) 100%, 0 calc(100% - var(--faq-cut)));
}

.page-faq .faq-block--paper {
  background: var(--c-paper);
  color: var(--c-ink-2);
}

.page-faq .faq-block--night {
  background: var(--c-night);
  color: var(--c-paper-hi);
}

.page-faq .faq-block__head {
  display: grid;
  gap: 6px;
  max-width: 70ch;
  margin-bottom: clamp(14px, 2.4vw, 26px);
}

.page-faq .faq-block__num {
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-mute);
}

.page-faq .faq-block__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.1;
  letter-spacing: -.02em;
  font-weight: 700;
}

.page-faq .faq-block__head p {
  max-width: 62ch;
  margin: 2px 0 0;
  font-size: 15px;
  line-height: 1.74;
  color: rgba(244, 240, 229, .72);
}

.page-faq .faq-block--paper .faq-block__head p {
  color: rgba(23, 24, 18, .74);
}

.page-faq .faq-block__head a {
  color: var(--c-mint);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--line-mint);
}

.page-faq .faq-block--paper .faq-block__head a {
  color: var(--c-mint-deep);
  text-decoration-color: rgba(14, 122, 87, .4);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: grid;
}

.page-faq .qa {
  position: relative;
  padding-left: clamp(12px, 2vw, 20px);
  border-bottom: 1px solid var(--line-dark);
  border-left: 2px solid transparent;
  transition: border-color 180ms ease, background-color 180ms ease;
}

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

.page-faq .faq-block--paper .qa {
  border-bottom-color: var(--faq-line-paper);
}

.page-faq .faq-block--paper .qa:first-child {
  border-top-color: var(--faq-line-paper);
}

.page-faq .qa[open] {
  border-left-color: var(--c-mint);
  background: linear-gradient(90deg, rgba(69, 224, 174, .10), rgba(69, 224, 174, 0) 60%);
}

.page-faq .faq-block--paper .qa[open] {
  border-left-color: var(--c-mint-deep);
  background: linear-gradient(90deg, rgba(14, 122, 87, .13), rgba(14, 122, 87, 0) 60%);
}

.page-faq .qa__q {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: clamp(10px, 1.6vw, 18px);
  padding: clamp(15px, 2.2vw, 20px) 46px clamp(15px, 2.2vw, 20px) 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.9vw, 20px);
  line-height: 1.42;
  letter-spacing: -.01em;
  font-weight: 600;
  color: inherit;
  transition: color 160ms ease;
}

.page-faq .qa__q::-webkit-details-marker { display: none; }
.page-faq .qa__q::marker { content: ""; }

.page-faq .qa__q:hover {
  color: var(--c-mint);
}

.page-faq .faq-block--paper .qa__q:hover {
  color: var(--c-mint-deep);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--c-mint);
  outline-offset: 2px;
}

.page-faq .qa__idx {
  flex: 0 0 auto;
  padding-top: 4px;
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--c-mute);
}

.page-faq .qa__mark {
  position: absolute;
  right: 4px;
  top: 50%;
  width: 14px;
  height: 14px;
  transform: translateY(-50%);
  color: var(--c-mint);
  pointer-events: none;
}

.page-faq .faq-block--paper .qa__mark {
  color: var(--c-mint-deep);
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: currentColor;
  transition: opacity 180ms ease, transform 180ms ease;
}

.page-faq .qa__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .qa__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .qa[open] .qa__mark::after {
  opacity: 0;
  transform: scaleY(.2);
}

.page-faq .qa__body {
  max-width: 72ch;
  padding: 0 clamp(10px, 2vw, 28px) clamp(18px, 2.6vw, 26px) 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(244, 240, 229, .8);
}

.page-faq .faq-block--paper .qa__body {
  color: rgba(23, 24, 18, .82);
}

.page-faq .qa__body p {
  margin: 0 0 10px;
}

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

.page-faq .qa__body .qa__short {
  margin-bottom: 14px;
  padding-left: 12px;
  font-weight: 600;
  color: var(--c-mint);
  border-left: 2px solid var(--c-mint);
}

.page-faq .faq-block--paper .qa__body .qa__short {
  color: var(--c-mint-deep);
  border-left-color: var(--c-mint-deep);
}

.page-faq .qa__body a {
  color: var(--c-mint);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--line-mint);
}

.page-faq .faq-block--paper .qa__body a {
  color: var(--c-mint-deep);
  text-decoration-color: rgba(14, 122, 87, .42);
}

/* ---------- 对比区 ---------- */
.page-faq .faq-compare {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

@media (min-width: 900px) {
  .page-faq .faq-compare {
    grid-template-columns: minmax(0, 1fr) minmax(220px, 288px);
    align-items: start;
  }
}

.page-faq .faq-viz {
  display: grid;
  gap: 20px;
  min-width: 0;
}

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

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.7) contrast(1.1) brightness(.9);
}

.page-faq .faq-figure .figure__caption {
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-mute);
}

.page-faq .faq-radar-card {
  padding: 16px 16px 14px;
  background: rgba(7, 19, 15, .55);
  border: 1px solid var(--line-dark);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, var(--faq-cut) 100%, 0 calc(100% - var(--faq-cut)));
}

.page-faq .faq-radar {
  display: block;
  width: 100%;
  max-width: 280px;
  height: auto;
  margin: 0 auto;
}

.page-faq .faq-radar__ring {
  fill: none;
  stroke: var(--line-dark);
  stroke-width: 1;
}

.page-faq .faq-radar__axis {
  stroke: var(--line-soft);
  stroke-width: 1;
}

.page-faq .faq-radar__shape--a {
  fill: rgba(69, 224, 174, .18);
  stroke: var(--c-mint);
  stroke-width: 2;
  stroke-linejoin: round;
}

.page-faq .faq-radar__shape--b {
  fill: rgba(255, 138, 60, .14);
  stroke: var(--c-sub);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-dasharray: 5 4;
}

.page-faq .faq-radar__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  font-size: 12.5px;
  color: rgba(244, 240, 229, .74);
}

.page-faq .faq-radar__legend li {
  display: flex;
  align-items: center;
  gap: 7px;
}

.page-faq .faq-radar__key {
  flex: 0 0 auto;
  width: 16px;
  height: 2px;
}

.page-faq .faq-radar__key--a { background: var(--c-mint); }
.page-faq .faq-radar__key--b { background: var(--c-sub); }

.page-faq .faq-radar__axes {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--c-mute);
}

/* ---------- 术语表 ---------- */
.page-faq .faq-terms {
  display: grid;
  margin: 0;
}

@media (min-width: 760px) {
  .page-faq .faq-terms {
    grid-template-columns: 1fr 1fr;
    column-gap: clamp(20px, 3vw, 42px);
  }
}

.page-faq .faq-term {
  padding: 13px 0;
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .faq-term dt {
  margin: 0;
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--c-mint);
}

.page-faq .faq-term__no {
  margin-right: 8px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--c-mute);
}

.page-faq .faq-term dd {
  margin: 5px 0 0;
  font-size: 14px;
  line-height: 1.74;
  color: rgba(244, 240, 229, .74);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-block--closing {
  padding: clamp(22px, 4vw, 42px) clamp(18px, 3.6vw, 40px);
  background: linear-gradient(135deg, rgba(69, 224, 174, .08), rgba(69, 224, 174, 0) 64%);
  border: 1px solid var(--line-mint);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, var(--faq-cut) 100%, 0 calc(100% - var(--faq-cut)));
}

.page-faq .faq-contact {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact li {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 12px;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(244, 240, 229, .84);
}

.page-faq .faq-contact__k {
  padding-top: 3px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--c-mute);
}

.page-faq .faq-contact a {
  color: var(--c-mint);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--line-mint);
}

@media (min-width: 640px) {
  .page-faq .faq-contact li {
    grid-template-columns: 76px minmax(0, 1fr);
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__q,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .faq-side__link {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}
<<<END>>>