.page-faq {
  --faq-wrap: 1240px;
  --faq-gutter: clamp(18px, 4vw, 40px);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-faq .faq-wrap {
  width: 100%;
  max-width: var(--faq-wrap);
  margin-inline: auto;
  padding-inline: var(--faq-gutter);
}

/* 面包屑 */
.page-faq .breadcrumb {
  padding-top: 16px;
}
.page-faq .breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--navy-600);
}
.page-faq .breadcrumb li {
  display: flex;
  align-items: center;
  gap: 6px;
}
.page-faq .breadcrumb li + li::before {
  content: "/";
  color: var(--blue-400);
}
.page-faq .breadcrumb a {
  color: var(--navy-800);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.page-faq .breadcrumb a:hover {
  color: var(--coral);
  border-bottom-color: var(--coral);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  background: linear-gradient(135deg, #F5F8FA 0%, #EBF2F6 58%, #E3EBF1 100%);
  border-bottom: 1px solid var(--line-dark);
  overflow: hidden;
  padding-bottom: clamp(28px, 5vw, 52px);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.26;
  pointer-events: none;
}
.page-faq .faq-hero > .faq-wrap {
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero__grid {
  display: grid;
  gap: 26px;
  padding-top: clamp(20px, 4vw, 40px);
}
.page-faq .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--navy-600);
}
.page-faq .eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--coral);
  flex: none;
}
.page-faq h1 {
  margin: 14px 0 0;
  font-size: clamp(29px, 6vw, 62px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--navy-900);
  max-width: 14em;
}
.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 36em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.82;
  color: var(--navy-800);
}
.page-faq .faq-hero__side {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-top: 16px;
  border-top: 2px solid var(--coral);
}
.page-faq .rail-note {
  margin: 0;
  flex: none;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.34em;
  color: var(--blue-400);
}
.page-faq .faq-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.page-faq .faq-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 8px;
  border-top: 1px solid var(--line-dark);
  min-width: 0;
}
.page-faq .stat-num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--navy-800);
}
.page-faq .stat-label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--navy-600);
}

/* 通用区块头 */
.page-faq .faq-section {
  padding-block: clamp(38px, 6vw, 76px);
}
.page-faq .faq-head {
  display: grid;
  gap: 10px;
  max-width: 64ch;
  margin-bottom: clamp(20px, 3vw, 34px);
}
.page-faq .faq-head h2,
.page-faq .steps-intro h2,
.page-faq .dl-head h2 {
  margin: 0;
  font-size: clamp(22px, 3.4vw, 38px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--navy-900);
}
.page-faq .faq-head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--navy-600);
}

/* 分类条 */
.page-faq .cat-bar {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1px;
  background: var(--mist);
  border: 1px solid var(--mist);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.page-faq .cat-item {
  flex: 0 0 80%;
  min-width: 0;
  scroll-snap-align: start;
  background: #ffffff;
  padding: 20px 18px 22px;
  transition: background var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}
.page-faq .cat-num {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--coral);
}
.page-faq .cat-name {
  margin: 8px 0 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--navy-900);
}
.page-faq .cat-desc {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--navy-600);
}
.page-faq .cat-meta {
  margin: 14px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--mist);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--navy-800);
}
.page-faq .cat-meta .mono {
  color: var(--coral);
  font-weight: 700;
}
.page-faq .cat-item.is-active {
  background: var(--paper);
  box-shadow: inset 0 -3px 0 var(--teal);
}
.page-faq .cat-item:hover {
  background: #ffffff;
  box-shadow: inset 0 -3px 0 var(--coral-soft);
}

/* 步骤折叠区 */
.page-faq .faq-steps {
  background: #ffffff;
  border-block: 1px solid var(--mist);
}
.page-faq .steps-grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}
.page-faq .steps-intro {
  display: grid;
  gap: 12px;
  align-content: start;
}
.page-faq .steps-lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--navy-600);
  max-width: 34em;
}
.page-faq .steps-figure {
  margin: 6px 0 0;
  border: 1px solid var(--mist);
  background: linear-gradient(135deg, #E9F2F7 0%, #DCE8EF 100%);
}
.page-faq .steps-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .media-caption {
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--navy-600);
  padding: 10px 12px;
  border-top: 1px solid var(--mist);
  background: rgba(255, 255, 255, 0.6);
}

.page-faq .fold-group {
  border-top: 1px solid var(--mist);
}
.page-faq .fold {
  border-bottom: 1px solid var(--mist);
}
.page-faq .fold h3 {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}
.page-faq .fold-trigger {
  width: 100%;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 18px 2px;
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-sans);
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--navy-900);
  transition: color var(--t-fast) var(--ease);
}
.page-faq .fold-trigger .mono {
  flex: none;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--coral);
}
.page-faq .fold-text {
  min-width: 0;
}
.page-faq .fold-icon {
  margin-left: auto;
  flex: none;
  font-size: 16px;
  line-height: 1;
  color: var(--blue-400);
  transition: transform var(--t-base) var(--ease), color var(--t-fast) var(--ease);
}
.page-faq .fold-trigger:hover {
  color: var(--coral);
}
.page-faq .fold-trigger:hover .fold-icon {
  color: var(--coral);
}
.page-faq .fold-trigger[aria-expanded="true"] .fold-icon {
  transform: rotate(90deg);
  color: var(--coral);
}
.page-faq .fold-trigger:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}
.page-faq .fold-panel {
  margin-left: 2px;
  padding: 2px 2px 22px 18px;
  border-left: 2px solid var(--coral);
}
.page-faq .fold-panel p {
  margin: 0 0 12px;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--navy-800);
}
.page-faq .fold-steps {
  margin: 0 0 14px;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  max-width: 40em;
}
.page-faq .fold-steps li {
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink);
}
.page-faq .fold-warn {
  margin: 0;
  padding: 11px 14px;
  background: var(--mist);
  border-left: 2px solid var(--blue-400);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--navy-800);
}

/* 资料下载区 */
.page-faq .faq-download {
  position: relative;
  overflow: hidden;
  padding-block: clamp(40px, 6vw, 78px);
  background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-800) 54%, var(--navy-600) 100%);
  color: var(--paper);
}
.page-faq .faq-download::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(135deg, rgba(62, 143, 176, 0.26) 0 1px, transparent 1px 16px);
  opacity: 0.45;
  pointer-events: none;
}
.page-faq .faq-download > .faq-wrap {
  position: relative;
  z-index: 1;
}
.page-faq .dl-top {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}
.page-faq .dl-head {
  display: grid;
  gap: 14px;
}
.page-faq .eyebrow--inverse {
  color: var(--coral-soft);
}
.page-faq .dl-head h2 {
  color: var(--paper);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.page-faq .batch-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--coral);
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.8vw, 18px);
  letter-spacing: 0.08em;
  line-height: 1.2;
  padding: 4px 10px;
  font-weight: 700;
}
.page-faq .batch-chip-key {
  background: rgba(6, 26, 43, 0.3);
  padding: 2px 6px;
  font-size: 11px;
  letter-spacing: 0.16em;
  font-weight: 400;
}
.page-faq .dl-lead {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.82;
  color: rgba(245, 248, 250, 0.82);
}
.page-faq .dl-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 6px;
  border-top: 1px solid var(--line-dark);
}
.page-faq .dl-filter-label {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--coral-soft);
  margin-right: 4px;
}
.page-faq .tag {
  appearance: none;
  border: 1px solid var(--line-dark);
  background: transparent;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  padding: 7px 14px;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.page-faq .tag:hover {
  border-color: var(--coral-soft);
  color: #ffffff;
}
.page-faq .tag.is-active {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--navy-900);
  font-weight: 700;
}
.page-faq .tag:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}
.page-faq .result-count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(245, 248, 250, 0.72);
  margin-left: auto;
}
.page-faq .dl-figure {
  margin: 0;
  border: 1px solid var(--line-dark);
  background: rgba(6, 26, 43, 0.35);
}
.page-faq .dl-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 260px;
  object-fit: cover;
}
.page-faq .dl-figure .media-caption {
  color: rgba(245, 248, 250, 0.7);
  background: rgba(6, 26, 43, 0.45);
  border-top-color: var(--line-dark);
}

.page-faq .dl-panel {
  margin-top: clamp(22px, 3vw, 34px);
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line-dark);
}
.page-faq .dl-table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.page-faq .dl-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: 14px;
}
.page-faq .dl-table th {
  text-align: left;
  padding: 14px 16px;
  background: #ffffff;
  border-bottom: 1px solid var(--line-dark);
  font-size: 11px;
  letter-spacing: 0.16em;
  font-weight: 700;
  color: var(--navy-600);
  white-space: nowrap;
}
.page-faq .dl-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--mist);
  color: var(--navy-800);
  vertical-align: middle;
}
.page-faq .dl-table tbody tr:nth-child(even) {
  background: var(--mist);
}
.page-faq .dl-table tbody tr:hover {
  background: #E4F2EE;
}
.page-faq .dl-name {
  font-weight: 600;
  color: var(--navy-900);
}
.page-faq .dl-size {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.page-faq .dl-table td:last-child {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--navy-600);
  white-space: nowrap;
}
.page-faq .fmt-tag {
  display: inline-block;
  padding: 3px 8px;
  border: 1px solid var(--blue-400);
  background: #ffffff;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--navy-800);
}

/* 资料怎么用 */
.page-faq .faq-usage {
  background: var(--paper);
}
.page-faq .usage-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--mist);
  border: 1px solid var(--mist);
}
.page-faq .usage-item {
  background: #ffffff;
  padding: clamp(20px, 3vw, 28px);
  display: grid;
  gap: 10px;
  align-content: start;
  transition: box-shadow var(--t-base) var(--ease), transform var(--t-base) var(--ease);
}
.page-faq .usage-item:hover {
  box-shadow: inset 0 0 0 1px var(--coral);
  transform: translateY(-2px);
}
.page-faq .usage-num {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--coral);
}
.page-faq .usage-item h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--navy-900);
}
.page-faq .usage-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--navy-800);
}
.page-faq .usage-meta {
  padding-top: 10px;
  border-top: 1px solid var(--mist);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--navy-600);
}

/* 出口 */
.page-faq .faq-exits {
  background: linear-gradient(180deg, #EDF3F7 0%, #E3EBF1 100%);
  border-top: 1px solid var(--mist);
}
.page-faq .exits-grid {
  display: grid;
  gap: 16px;
}
.page-faq .exit-card {
  padding: clamp(22px, 3vw, 32px);
  display: grid;
  gap: 12px;
  align-content: start;
  border: 1px solid var(--line-dark);
}
.page-faq .exit-card h3 {
  margin: 0;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 900;
  line-height: 1.3;
}
.page-faq .exit-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
}
.page-faq .exit-card--sub {
  background: #ffffff;
  color: var(--navy-800);
  border-top: 3px solid var(--teal);
}
.page-faq .exit-card--sub h3 {
  color: var(--navy-900);
}
.page-faq .exit-meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--navy-600);
}
.page-faq .exit-card--dark {
  background: var(--navy-900);
  color: rgba(245, 248, 250, 0.86);
  border-color: var(--navy-600);
  border-top: 3px solid var(--coral);
}
.page-faq .exit-card--dark h3 {
  color: var(--paper);
}
.page-faq .exit-contact {
  list-style: none;
  margin: 0;
  padding: 12px 0 0;
  border-top: 1px solid var(--line-dark);
  display: grid;
  gap: 8px;
  font-size: 14px;
  line-height: 1.6;
  word-break: break-word;
}
.page-faq .exit-contact .mono {
  display: inline-block;
  min-width: 44px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--coral-soft);
}
.page-faq .exit-card .btn {
  justify-self: start;
  margin-top: 4px;
}
.page-faq .btn {
  display: inline-block;
  padding: 11px 20px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.page-faq .btn-dark {
  background: var(--navy-800);
  color: var(--paper);
  border-color: var(--navy-800);
}
.page-faq .btn-dark:hover {
  background: var(--navy-600);
  border-color: var(--navy-600);
}
.page-faq .btn-accent {
  background: var(--coral);
  color: #ffffff;
  border-color: var(--coral);
}
.page-faq .btn-accent:hover {
  background: var(--coral-soft);
  border-color: var(--coral-soft);
  color: var(--navy-900);
}
.page-faq .btn:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}
.page-faq .exits-links {
  margin: clamp(22px, 3vw, 32px) 0 0;
  max-width: 60em;
  font-size: 14px;
  line-height: 1.85;
  color: var(--navy-800);
}
.page-faq .exits-links a {
  color: var(--navy-900);
  text-decoration: none;
  border-bottom: 1px solid var(--coral);
  padding-bottom: 1px;
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.page-faq .exits-links a:hover {
  color: var(--coral);
  background: rgba(255, 107, 61, 0.1);
}

/* 断点 */
@media (min-width: 760px) {
  .page-faq .cat-bar {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    overflow: visible;
  }
  .page-faq .cat-item {
    flex: none;
  }
  .page-faq .usage-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.7fr);
    gap: clamp(28px, 4vw, 64px);
    align-items: end;
  }
  .page-faq .steps-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }
  .page-faq .steps-intro {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
  .page-faq .dl-top {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }
  .page-faq .exits-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hero__lead {
    font-size: 17px;
  }
  .page-faq .cat-item {
    padding: 24px 20px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .usage-item,
  .page-faq .usage-item:hover,
  .page-faq .fold-icon,
  .page-faq .tag,
  .page-faq .btn {
    transition: none;
    transform: none;
  }
}
<<<END>>>