.page-faq {
  --faq-rail: 268px;
  --faq-rule: rgba(140, 160, 196, 0.32);
  --faq-body: #D5DCEA;
  background: var(--sky);
  color: var(--snow);
}

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

.page-faq .faq-hero {
  position: relative;
  padding: 40px 0 56px;
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(106, 76, 166, 0.34), transparent 62%),
    linear-gradient(180deg, var(--void) 0%, var(--sky) 88%);
  border-bottom: 2px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero-inner {
  display: grid;
  gap: 36px;
  align-items: end;
}

.page-faq .faq-hero-copy {
  min-width: 0;
  max-width: 640px;
}

.page-faq h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 7.2vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--snow);
}

.page-faq .faq-hero-lead {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--faq-body);
}

.page-faq .faq-hero-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.page-faq .faq-hero-media {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-ribbon {
  height: 6px;
  margin-top: 40px;
  background: repeating-linear-gradient(
    90deg,
    var(--gold) 0 46px,
    var(--red) 46px 92px,
    var(--green) 92px 138px,
    var(--violet) 138px 184px
  );
}

/* ---------- 三步上手 ---------- */

.page-faq .faq-start {
  background: var(--mid);
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-route {
  display: none;
  width: 100%;
  max-width: 900px;
  height: auto;
  margin: 40px 0 0;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-faq .faq-step {
  position: relative;
  min-width: 0;
  padding: 28px 22px 24px;
  background: var(--card);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard-sm);
  transition: transform 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.page-faq .faq-step:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--void);
}

.page-faq .faq-step-num {
  display: block;
  font-family: var(--font-data);
  font-size: 34px;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--gold);
}

.page-faq .faq-step-title {
  margin: 16px 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.35;
  color: var(--snow);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.76;
  color: var(--faq-body);
}

.page-faq .faq-step .faq-step-note {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--faq-rule);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-step-note a {
  color: var(--gold-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 目录 + 问答双栏 ---------- */

.page-faq .faq-shell {
  display: grid;
  gap: 40px;
  padding-top: 64px;
  padding-bottom: 80px;
}

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

.page-faq .faq-rail-nav {
  display: grid;
  gap: 2px;
  margin-top: 14px;
}

.page-faq .chapter-rail-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px 10px 14px;
  border-left: 3px solid transparent;
  font-size: 14.5px;
  line-height: 1.45;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .chapter-rail-link:hover,
.page-faq .chapter-rail-link:focus-visible {
  color: var(--snow);
  background: rgba(36, 73, 122, 0.42);
}

.page-faq .chapter-rail-link.is-active {
  color: var(--snow);
  border-left-color: var(--gold);
  background: rgba(36, 73, 122, 0.62);
}

.page-faq .faq-rail-num {
  flex: none;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-faq .faq-rail-note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--faq-rule);
  font-size: 13px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-rail-note a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.page-faq .faq-group {
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 64px;
  padding-top: 52px;
  border-top: 2px solid var(--faq-rule);
}

.page-faq .faq-group-head {
  max-width: 46em;
}

.page-faq .faq-group-head::after {
  content: "";
  display: block;
  width: 52px;
  height: 2px;
  margin-top: 20px;
  background: var(--mist);
}

.page-faq .faq-group-lead {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.76;
  color: var(--faq-body);
}

.page-faq .faq-group-foot {
  margin: 24px 0 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-group-foot a,
.page-faq .faq-metric-note a {
  color: var(--gold-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 卡片 ---------- */

.page-faq .faq-cards {
  display: grid;
  gap: 20px;
  margin-top: 30px;
}

.page-faq .faq-card {
  min-width: 0;
  padding: 26px 22px 24px;
  border-left: 3px solid var(--gold);
  background: linear-gradient(180deg, rgba(22, 58, 99, 0.9), rgba(16, 42, 76, 0.55));
}

.page-faq .faq-card h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.35;
  color: var(--snow);
}

.page-faq .faq-card p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.76;
  color: var(--faq-body);
}

.page-faq .faq-mini-steps {
  list-style: none;
  counter-reset: faq-ms;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-mini-steps li {
  position: relative;
  counter-increment: faq-ms;
  padding-left: 34px;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--faq-body);
}

.page-faq .faq-mini-steps li::before {
  content: counter(faq-ms, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-faq .faq-bullets {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-bullets li {
  position: relative;
  padding-left: 20px;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--faq-body);
}

.page-faq .faq-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 2px;
  background: var(--gold);
}

.page-faq .faq-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}

.page-faq .faq-card .faq-tip {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-rule);
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-figure {
  margin: 30px 0 0;
}

/* ---------- 刷新节奏 ---------- */

.page-faq .faq-rhythm {
  margin-top: 30px;
  display: grid;
}

.page-faq .faq-rhythm-row {
  display: grid;
  gap: 8px;
  padding: 22px 0;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-rhythm-row:last-child {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-rhythm-key {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.4;
  color: var(--gold-soft);
}

.page-faq .faq-rhythm-val {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--faq-body);
}

/* ---------- 标签与指标 ---------- */

.page-faq .faq-legend {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-legend-item {
  min-width: 0;
  padding: 20px 18px;
  background: rgba(16, 42, 76, 0.72);
  border-top: 2px solid var(--line);
}

.page-faq .faq-legend-item:nth-child(1) {
  border-top-color: var(--red);
}

.page-faq .faq-legend-item:nth-child(2) {
  border-top-color: var(--gold);
}

.page-faq .faq-legend-item:nth-child(3) {
  border-top-color: var(--green);
}

.page-faq .faq-legend-item p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--faq-body);
}

.page-faq .faq-metrics {
  display: grid;
  gap: 2px;
  margin-top: 26px;
  border: 2px solid var(--line);
  background: var(--line);
}

.page-faq .faq-metrics .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 20px;
  background: var(--void);
}

.page-faq .faq-metrics .stat-value {
  font-family: var(--font-data);
  font-size: 30px;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-metrics .stat-label {
  font-size: 14px;
  line-height: 1.5;
  color: var(--mist);
}

.page-faq .faq-metric-note {
  margin: 20px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-body);
}

/* ---------- 手机与无障碍 ---------- */

.page-faq .faq-mobile-grid {
  margin-top: 30px;
  display: grid;
  gap: 24px;
}

.page-faq .faq-mobile-card {
  min-width: 0;
  padding: 24px 22px;
  background: var(--mid);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .faq-mobile-card-title {
  margin: 0 0 12px;
  font-family: var(--font-data);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-faq .faq-mobile-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--faq-body);
}

/* ---------- 常见疑问 ---------- */

.page-faq .faq-qa-group {
  margin: 44px 0 4px;
  padding-bottom: 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--gold-soft);
  border-bottom: 2px solid var(--faq-rule);
}

.page-faq .faq-qa {
  display: grid;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-rule);
  scroll-margin-top: 96px;
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16.5px;
  line-height: 1.5;
  color: var(--snow);
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease);
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-data);
  font-size: 20px;
  line-height: 1.2;
  color: var(--gold);
}

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

.page-faq .faq-item > summary:hover {
  background: rgba(36, 73, 122, 0.32);
  color: var(--gold-soft);
}

.page-faq .faq-item[open] > summary {
  color: var(--gold-soft);
}

.page-faq .faq-answer {
  padding: 0 4px 22px;
  max-width: 42em;
}

.page-faq .faq-answer p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--faq-body);
}

.page-faq .faq-answer p + p {
  margin-top: 12px;
}

.page-faq .faq-answer a {
  color: var(--gold-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item[open] .faq-answer {
  animation: faq-answer-in 0.24s var(--ease) both;
}

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-back {
  margin-top: 64px;
  padding-top: 36px;
  border-top: 2px solid var(--line);
  display: flex;
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-faq .faq-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-legend {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-rhythm-row {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 28px;
    align-items: baseline;
  }

  .page-faq .faq-cards {
    grid-template-columns: 1.08fr 0.92fr;
    gap: 26px;
  }
}

@media (min-width: 820px) {
  .page-faq .faq-route {
    display: block;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
    margin-top: 40px;
  }

  .page-faq .faq-mobile-grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 64px 0 72px;
  }

  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: 56px;
    align-items: center;
  }

  .page-faq .faq-ribbon {
    margin-top: 56px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 64px;
    padding-top: 88px;
    padding-bottom: 112px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 88px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
  }

  .page-faq .faq-group + .faq-group {
    margin-top: 88px;
    padding-top: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step,
  .page-faq .chapter-rail-link,
  .page-faq .faq-item > summary {
    transition: none;
  }

  .page-faq .faq-item[open] .faq-answer {
    animation: none;
  }
}
<<<END>>>