.page-faq {
  background: var(--paper);
  color: var(--text);
  font-family: var(--sans);
  overflow-x: clip;
}

.page-faq .mono {
  font-family: var(--mono);
  font-weight: 500;
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible,
.page-faq button:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}

/* ---------- 顶部刻度路径 ---------- */
.page-faq .faq-ruler {
  height: 20px;
  border-bottom: 1px solid var(--line);
  background-image: repeating-linear-gradient(90deg, var(--grape-lite) 0 1px, transparent 1px 64px);
  background-repeat: repeat-x;
  background-position: left bottom;
  background-size: auto 11px;
}

/* ---------- 页头 ---------- */
.page-faq .faq-head {
  position: relative;
  background: var(--ink);
  background-image:
    repeating-linear-gradient(90deg, rgba(164, 111, 196, 0.18) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(180deg, rgba(164, 111, 196, 0.11) 0 1px, transparent 1px 88px);
  color: var(--paper);
  padding: clamp(1.4rem, 3.5vw, 2.2rem) 0 clamp(2.6rem, 6vw, 4.4rem);
}

.page-faq .faq-crumb {
  margin-bottom: clamp(1.6rem, 3.5vw, 2.6rem);
}

.page-faq .faq-crumb .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-crumb .breadcrumb-link,
.page-faq .faq-crumb .breadcrumb-current,
.page-faq .faq-crumb .breadcrumb-sep {
  font-size: 0.8125rem;
  letter-spacing: 0.05em;
  color: rgba(246, 242, 233, 0.66);
  text-decoration: none;
}

.page-faq .faq-crumb .breadcrumb-link:hover {
  color: var(--green);
}

.page-faq .faq-crumb .breadcrumb-current {
  color: var(--gold);
}

.page-faq .faq-head-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.8rem, 4vw, 3rem);
}

.page-faq .faq-eyebrow {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--green);
  padding-bottom: 0.4rem;
  border-bottom: 1px solid rgba(216, 210, 196, 0.28);
  display: inline-block;
}

.page-faq .faq-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(2rem, 5.4vw, 3.6rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 1rem 0 0;
  color: var(--paper);
}

.page-faq .faq-lede {
  margin: 1.2rem 0 0;
  max-width: 52ch;
  font-size: clamp(0.9375rem, 1.5vw, 1.0625rem);
  line-height: 1.9;
  color: rgba(246, 242, 233, 0.82);
}

.page-faq .faq-stats {
  margin: 0;
  border-top: 1px solid rgba(216, 210, 196, 0.3);
}

.page-faq .faq-stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.68rem 0;
  border-bottom: 1px solid rgba(216, 210, 196, 0.15);
}

.page-faq .faq-stat dt {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: rgba(246, 242, 233, 0.58);
}

.page-faq .faq-stat dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.9375rem;
  color: var(--gold);
}

/* ---------- 开篇口径 ---------- */
.page-faq .faq-caliber {
  padding: clamp(2.6rem, 6.5vw, 4.8rem) 0 clamp(1.6rem, 4vw, 2.6rem);
}

.page-faq .faq-caliber-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.8rem, 4vw, 3.2rem);
}

.page-faq .faq-eyebrow-light,
.page-faq .faq-eyebrow-dark {
  display: inline-block;
  margin: 0;
  padding-bottom: 0.4rem;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
}

.page-faq .faq-eyebrow-dark {
  color: var(--grape);
  border-bottom: 1px solid var(--grape-lite);
}

.page-faq .faq-eyebrow-light {
  color: var(--green);
  border-bottom: 1px solid rgba(216, 210, 196, 0.34);
}

.page-faq .faq-h2 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.45rem, 2.9vw, 2.2rem);
  line-height: 1.26;
  margin: 0.85rem 0 0;
  color: var(--text);
  max-width: 24ch;
}

.page-faq .faq-caliber-list {
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
}

.page-faq .faq-caliber-item {
  position: relative;
  padding: 1rem 0 1rem 1.6rem;
  border-top: 1px solid var(--line);
}

.page-faq .faq-caliber-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1rem;
  bottom: 1rem;
  width: 3px;
}

.page-faq .faq-caliber-item:nth-child(1)::before { background: var(--gold); }
.page-faq .faq-caliber-item:nth-child(2)::before { background: var(--green); }
.page-faq .faq-caliber-item:nth-child(3)::before { background: var(--grape-lite); }

.page-faq .faq-caliber-no {
  display: block;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--grape);
  margin-bottom: 0.35rem;
}

.page-faq .faq-caliber-item h3 {
  margin: 0 0 0.4rem;
  font-family: var(--serif);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
}

.page-faq .faq-caliber-item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--text);
  opacity: 0.85;
}

.page-faq .faq-caliber-item:last-child {
  border-bottom: 1px solid var(--line);
}

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

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

.page-faq .faq-figure .media-caption {
  margin-top: 0.7rem;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--grape);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.8rem, 4vw, 3.4rem);
  padding-bottom: clamp(2.6rem, 6.5vw, 5rem);
  align-items: start;
}

.page-faq .faq-rail {
  position: static;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}

.page-faq .faq-rail-title {
  display: block;
  margin: 0;
  padding-bottom: 0.4rem;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--grape);
  border-bottom: 1px solid var(--grape-lite);
}

.page-faq .faq-rail-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
}

.page-faq .faq-rail-item {
  position: relative;
  padding-left: 1.5rem;
}

.page-faq .faq-rail-item::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--grape-lite);
  opacity: 0.5;
}

.page-faq .faq-rail-item:first-child::before { top: 1.05rem; }
.page-faq .faq-rail-item:last-child::before { height: 1.05rem; bottom: auto; }

.page-faq .faq-rail-item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0.98rem;
  width: 7px;
  height: 7px;
  background: var(--line);
  transition: background-color 0.18s ease, transform 0.18s ease;
}

.page-faq .faq-rail-item:hover::after,
.page-faq .faq-rail-item:focus-within::after {
  background: var(--green);
  transform: scale(1.25);
}

.page-faq .faq-rail-link {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.48rem 0;
  text-decoration: none;
  color: var(--text);
  font-size: 0.9375rem;
  line-height: 1.5;
}

.page-faq .faq-rail-link:hover {
  color: var(--grape);
}

.page-faq .faq-rail-no {
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--grape-lite);
}

.page-faq .faq-rail-foot {
  margin: 1.1rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
  line-height: 1.7;
  letter-spacing: 0.05em;
  color: var(--green-deep);
}

/* ---------- 通用内容块 ---------- */
.page-faq .faq-block {
  padding-top: clamp(1.6rem, 3.5vw, 2.4rem);
  margin-bottom: clamp(2.4rem, 5.5vw, 4rem);
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-block-lede {
  margin: 1.1rem 0 0;
  max-width: 60ch;
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--text);
  opacity: 0.84;
}

.page-faq .faq-block-lede a,
.page-faq .faq-step-body a {
  color: var(--green-deep);
  text-decoration: underline;
  text-decoration-color: var(--green);
  text-underline-offset: 3px;
}

/* ---------- 步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1.05rem 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-step:last-child {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--grape-lite);
  color: var(--grape);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

.page-faq .faq-step-body h3 {
  margin: 0.25rem 0 0.35rem;
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.page-faq .faq-step-body p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--text);
  opacity: 0.85;
}

/* ---------- 协作与共建字段 ---------- */
.page-faq .faq-partner-grid {
  margin-top: 1.8rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-partner {
  background: var(--paper);
  padding: clamp(1.2rem, 3vw, 1.75rem);
}

.page-faq .faq-partner-key {
  display: inline-block;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--grape);
  padding-bottom: 0.15rem;
  border-bottom: 2px solid var(--gold);
}

.page-faq .faq-partner h3 {
  margin: 0.9rem 0 0.5rem;
  font-family: var(--serif);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
}

.page-faq .faq-partner-note {
  margin: 0 0 1rem;
  font-size: 0.875rem;
  line-height: 1.85;
  color: var(--green-deep);
}

.page-faq .faq-fields {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-fields li {
  display: grid;
  grid-template-columns: 3.6rem minmax(0, 1fr);
  gap: 0.6rem;
  padding: 0.5rem 0;
  border-bottom: 1px dashed var(--line);
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-fields li:last-child {
  border-bottom: 0;
}

.page-faq .faq-field-code {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--grape-lite);
  padding-top: 0.1rem;
}

.page-faq .faq-boundary {
  margin: 1.1rem 0 0;
  padding: 0.7rem 0.9rem;
  border-left: 3px solid var(--wine);
  background: rgba(122, 36, 54, 0.06);
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--text);
}

/* ---------- 问答区 ---------- */
.page-faq .faq-qa {
  background: var(--indigo);
  color: var(--paper);
  padding: clamp(2.6rem, 6.5vw, 4.6rem) 0;
  margin-bottom: clamp(2.4rem, 5.5vw, 4rem);
  scroll-margin-top: calc(var(--header-h) + 24px);
  border-top: 1px solid var(--grape-lite);
}

.page-faq .faq-qa .faq-h2 {
  color: var(--paper);
  max-width: 28ch;
}

.page-faq .faq-qa .faq-block-lede {
  color: rgba(246, 242, 233, 0.8);
}

.page-faq .faq-filter {
  margin-top: 1.9rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem;
  border: 1px solid rgba(216, 210, 196, 0.26);
  background: rgba(246, 242, 233, 0.07);
  backdrop-filter: blur(6px);
}

.page-faq .faq-filter .filter-btn {
  font-family: var(--sans);
  font-size: 0.8125rem;
  line-height: 1.4;
  padding: 0.38rem 0.85rem;
  border: 1px solid rgba(216, 210, 196, 0.36);
  background: transparent;
  color: rgba(246, 242, 233, 0.86);
  cursor: pointer;
  transition: background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

.page-faq .faq-filter .filter-btn:hover {
  border-color: var(--green);
  color: var(--green);
}

.page-faq .faq-filter .filter-btn[aria-pressed="true"] {
  background: var(--green);
  border-color: var(--green);
  color: var(--ink);
  font-weight: 700;
}

.page-faq .faq-filter-status {
  margin-left: auto;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--gold);
}

.page-faq .faq-qa-list {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
}

.page-faq .faq-qa-item {
  border-bottom: 1px solid rgba(216, 210, 196, 0.2);
}

.page-faq .faq-qa-item:first-child {
  border-top: 1px solid rgba(216, 210, 196, 0.2);
}

.page-faq .faq-detail-summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 0.9rem;
  padding: 1.05rem 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-detail-no {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-faq .faq-detail-q {
  font-family: var(--serif);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
}

.page-faq .faq-detail-mark {
  position: relative;
  width: 14px;
  height: 14px;
  align-self: center;
}

.page-faq .faq-detail-mark::before,
.page-faq .faq-detail-mark::after {
  content: "";
  position: absolute;
  background: var(--green);
  transition: transform 0.2s ease;
}

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

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

.page-faq .faq-detail[open] .faq-detail-mark::after {
  transform: scaleY(0);
}

.page-faq .faq-detail-body {
  padding: 0 0 1.3rem 3.3rem;
}

.page-faq .faq-detail-body p {
  margin: 0;
  max-width: 66ch;
  font-size: 0.9375rem;
  line-height: 1.95;
  color: rgba(246, 242, 233, 0.82);
}

/* ---------- 排查路径 ---------- */
.page-faq .faq-paths {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(2.6rem, 6.5vw, 4.6rem) 0;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-paths-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.8rem, 4vw, 3rem);
  align-items: start;
}

.page-faq .faq-paths .faq-h2 {
  color: var(--paper);
}

.page-faq .faq-paths .faq-block-lede {
  color: rgba(246, 242, 233, 0.8);
}

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

.page-faq .faq-paths .media-caption {
  margin-top: 0.7rem;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: rgba(246, 242, 233, 0.62);
}

.page-faq .faq-path-list {
  list-style: none;
  margin: 1.9rem 0 0;
  padding: 0;
}

.page-faq .faq-path {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  padding: 1.15rem 0;
  border-top: 1px solid rgba(216, 210, 196, 0.2);
}

.page-faq .faq-path:last-child {
  border-bottom: 1px solid rgba(216, 210, 196, 0.2);
}

.page-faq .faq-path-node {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--gold);
  border: 1px solid var(--grape-lite);
  background: rgba(109, 46, 143, 0.22);
}

.page-faq .faq-path-body h3 {
  margin: 0.2rem 0 0.35rem;
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-path-body p {
  margin: 0;
  max-width: 58ch;
  font-size: 0.9375rem;
  line-height: 1.9;
  color: rgba(246, 242, 233, 0.8);
}

/* ---------- 术语表 ---------- */
.page-faq .faq-glossary {
  padding: clamp(2.6rem, 6.5vw, 4.6rem) 0 clamp(2.8rem, 6vw, 4.4rem);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-terms {
  margin: 1.9rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--line);
}

.page-faq .faq-term {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.2rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-term dt {
  font-family: var(--serif);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--grape);
  text-decoration: underline;
  text-decoration-color: var(--grape-lite);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .faq-term dd {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.85;
  color: var(--text);
  opacity: 0.85;
}

.page-faq .faq-glossary-foot {
  margin: 2rem 0 0;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  max-width: 64ch;
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--text);
}

.page-faq .faq-glossary-foot a {
  color: var(--green-deep);
  text-decoration: underline;
  text-decoration-color: var(--green);
  text-underline-offset: 3px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-partner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-terms {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(1.6rem, 4vw, 3rem);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-head-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-faq .faq-caliber-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-faq .faq-path {
    gap: 1.2rem;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 218px minmax(0, 1fr);
    gap: clamp(1.8rem, 4vw, 3.4rem);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    padding-top: 1.6rem;
  }
}

@media (max-width: 640px) {
  .page-faq .faq-detail-body {
    padding-left: 0;
  }

  .page-faq .faq-filter-status {
    margin-left: 0;
    width: 100%;
  }

  .page-faq .faq-step {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition: none !important;
    animation: none !important;
  }
}
<<<END>>>