.page-faq {
  --faq-rail-w: 180px;
  --faq-gap: 32px;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 56px) clamp(64px, 8vw, 120px);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
}

/* ---------- 顶部索引条 ---------- */
.page-faq .faq-index {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 24px;
  padding: 14px 0 13px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.page-faq .faq-index-mark {
  margin-right: auto;
  color: var(--autumn);
}
.page-faq .faq-index-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  color: var(--ink-2);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}
.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--ink);
}
.page-faq .faq-index-id {
  font-weight: 600;
  color: var(--ink-3);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(32px, 5vw, 56px);
}
.page-faq .breadcrumb {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-3);
  margin-bottom: 28px;
}
.page-faq .breadcrumb a {
  color: var(--ink-2);
  text-decoration: none;
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--winter);
}
.page-faq .breadcrumb span {
  margin: 0 6px;
}
.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--autumn);
  margin: 0 0 20px;
}
.page-faq .faq-hero-title {
  font-family: var(--font-body);
  font-weight: 200;
  font-size: clamp(38px, 6.4vw, 92px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0 0 28px;
  max-width: 15ch;
}
.page-faq .faq-hero-lead {
  max-width: 62ch;
  margin: 0 0 clamp(36px, 5vw, 56px);
  color: var(--ink-2);
  font-size: 16px;
}
.page-faq .faq-hero-media {
  position: relative;
  overflow: hidden;
}
.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  filter: brightness(0.62) saturate(0.9);
}
.page-faq .faq-hero-facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: clamp(28px, 4vw, 44px);
  border-top: 1px solid var(--line);
}
.page-faq .faq-fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-fact-num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1;
  color: var(--summer);
}
.page-faq .faq-fact-unit {
  font-size: 0.42em;
  font-weight: 400;
  margin-left: 6px;
  color: var(--ink-2);
}
.page-faq .faq-fact-label {
  font-size: 13px;
  color: var(--ink-2);
}

/* ---------- 问答组 ---------- */
.page-faq .faq-group {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  padding: clamp(56px, 8vw, 104px) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 88px;
}
.page-faq .faq-rail {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-left: 16px;
}
.page-faq .faq-rail::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background: var(--grad-seasons);
}
.page-faq .faq-num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--autumn);
  line-height: 1.4;
}
.page-faq .faq-rail-title {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0;
}
.page-faq .faq-main {
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-width: 0;
}
.page-faq .faq-group-desc {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

/* ---------- 折叠问答行 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-faq .q {
  position: relative;
  border: 1px solid var(--line);
  background: var(--panel);
  transition: border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease),
              transform var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}
.page-faq .q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--grad-seasons);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.page-faq .q:hover {
  border-color: #24395c;
}
.page-faq .q[open] {
  border: 2px solid var(--line);
  box-shadow: var(--hard-sm);
  transform: translateY(1px);
  background: var(--panel-2);
}
.page-faq .q[open]::before {
  opacity: 1;
}

.page-faq .q-summary {
  display: grid;
  grid-template-columns: 34px 1fr 18px;
  align-items: center;
  gap: 12px;
  padding: 18px 18px 18px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--ink);
}
.page-faq .q-summary::-webkit-details-marker { display: none; }
.page-faq .q-summary::marker { content: ""; }
.page-faq .q-summary:focus-visible {
  outline: 2px solid var(--winter);
  outline-offset: -2px;
}
.page-faq .q-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-3);
  font-weight: 600;
}
.page-faq .q-label {
  min-width: 0;
}
.page-faq .q-mark {
  position: relative;
  width: 14px;
  height: 14px;
  justify-self: end;
}
.page-faq .q-mark::before,
.page-faq .q-mark::after {
  content: "";
  position: absolute;
  background: var(--ink-2);
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.page-faq .q-mark::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 2px;
}
.page-faq .q-mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}
.page-faq .q[open] .q-mark::before { background: var(--summer); }
.page-faq .q[open] .q-mark::after { transform: scaleY(0); }

.page-faq .q-body {
  padding: 0 20px 22px 66px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
}
.page-faq .q-body p {
  margin: 0;
}
.page-faq .q-body strong {
  color: var(--autumn);
  font-weight: 600;
}
.page-faq .q-body a {
  color: var(--winter);
  text-decoration: none;
  border-bottom: 1px solid rgba(76, 141, 255, 0.4);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-faq .q-body a:hover,
.page-faq .q-body a:focus-visible {
  color: #7CACFF;
  border-bottom-color: #7CACFF;
}
.page-faq .q-foot {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}
.page-faq .q-copy {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-2);
  cursor: pointer;
  transition: color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}
.page-faq .q-copy:hover,
.page-faq .q-copy:focus-visible {
  color: var(--ink);
  border-color: var(--winter);
}
.page-faq .q-copy[data-copy-state="done"] {
  color: var(--spring);
  border-color: var(--spring);
}
.page-faq .q-link {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--winter);
  text-decoration: none;
  border-bottom: 1px solid rgba(76, 141, 255, 0.45);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-faq .q-link:hover,
.page-faq .q-link:focus-visible {
  color: #7CACFF;
  border-bottom-color: #7CACFF;
}

/* ---------- 口径章节配图 ---------- */
.page-faq .faq-metric-figure {
  margin: 12px 0 0;
  max-width: 460px;
  border: 2px solid var(--line);
  box-shadow: var(--hard-sm);
  background: var(--panel);
}
.page-faq .faq-metric-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}
.page-faq .faq-figure-cap {
  margin: 0;
  padding: 12px 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-3);
}

/* ---------- 收尾联系 ---------- */
.page-faq .faq-tail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: clamp(48px, 7vw, 88px) clamp(20px, 4vw, 48px);
  border: 2px solid var(--line);
  box-shadow: var(--hard);
  background: linear-gradient(160deg, rgba(76, 141, 255, 0.1), rgba(7, 11, 20, 0) 62%), var(--panel);
  scroll-margin-top: 88px;
}
.page-faq .faq-tail-main {
  max-width: 58ch;
}
.page-faq .faq-tail-title {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}
.page-faq .faq-tail-main p {
  margin: 0;
  color: var(--ink-2);
  font-size: 14.5px;
}
.page-faq .faq-tail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.page-faq .faq-tail-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-tail-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.page-faq .faq-tail-val {
  font-size: 14.5px;
  color: var(--ink);
  word-break: break-word;
}
.page-faq .faq-tail-btn {
  justify-self: start;
}

.page-faq .faq-close-rule {
  margin-top: clamp(48px, 7vw, 88px);
  height: 3px;
  border: 0;
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 32px;
  }
  .page-faq .faq-fact {
    border-bottom: 0;
    border-top: 2px solid var(--line);
    padding-top: 18px;
  }
  .page-faq .faq-tail {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 32px 48px;
  }
  .page-faq .faq-tail-main {
    grid-column: 1;
  }
  .page-faq .faq-tail-list {
    grid-column: 2;
    grid-row: 1 / span 2;
    border-top: 0;
  }
  .page-faq .faq-tail-btn {
    grid-column: 1;
  }
}

@media (min-width: 900px) {
  .page-faq {
    --faq-rail-w: 180px;
    --faq-gap: 56px;
  }
  .page-faq .faq-group {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
  }
  .page-faq .faq-rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    position: sticky;
    top: 96px;
    align-self: start;
    padding-left: 18px;
  }
  .page-faq .faq-rail::before {
    top: 2px;
    bottom: 2px;
  }
  .page-faq .faq-rail-title {
    font-size: clamp(22px, 2.2vw, 28px);
  }
  .page-faq .q-summary {
    padding: 20px 22px 20px 24px;
  }
  .page-faq .q-body {
    padding: 0 24px 24px 70px;
  }
}

@media (min-width: 1200px) {
  .page-faq {
    --faq-rail-w: 220px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .q,
  .page-faq .q::before,
  .page-faq .q-mark::before,
  .page-faq .q-mark::after,
  .page-faq .faq-index-link,
  .page-faq .q-copy,
  .page-faq .q-link {
    transition: none;
  }
  .page-faq .q[open] {
    transform: none;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>