.page-faq {
  --faq-rail-w: 248px;
  --faq-glow: rgba(155, 108, 255, .16);
  --faq-cyan-soft: rgba(36, 224, 210, .07);
  color: var(--ink);
  padding-bottom: 0;
}

/* 面包屑 */
.page-faq .crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 18px 0 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

.page-faq .crumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color .2s ease;
}

.page-faq .crumb a:hover,
.page-faq .crumb a:focus-visible {
  color: var(--cyan);
}

.page-faq .crumb-sep {
  color: var(--line);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: var(--grid) var(--grid);
  background-position: center top;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(58% 78% at 78% 10%, var(--faq-glow), transparent 62%),
    radial-gradient(52% 70% at 8% 92%, rgba(36, 224, 210, .12), transparent 60%);
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-top: 34px;
  padding-bottom: 46px;
}

.page-faq .faq-kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--pulse);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.6vw, 58px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 38em;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-hero-facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-hero-facts li {
  background: var(--bg);
  padding: 12px 14px;
}

.page-faq .faq-hero-facts .mono {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-faq .faq-hero-facts strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--cyan);
}

.page-faq .faq-hero-figure {
  margin: 0;
  position: relative;
}

.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 章节标题条 */
.page-faq .section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-faq .section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.6vw, 30px);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .section-num {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
}

/* 三步操作 */
.page-faq .faq-steps {
  padding: 52px 0 62px;
}

.page-faq .step-row {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-faq .step-item {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-faq .step-item:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 34px;
  right: -21px;
  width: 20px;
  border-top: 1px dashed var(--line);
}

.page-faq .step-num {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 9px;
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--cyan);
  border: 1px solid var(--cyan);
}

.page-faq .step-item h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .step-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--muted);
}

/* 问答主区 */
.page-faq .faq-main {
  padding: 0 0 68px;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

/* 左侧目录 */
.page-faq .faq-rail {
  padding: 14px 12px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .rail-title {
  margin: 0 0 12px;
  padding-left: 10px;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
}

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

.page-faq .rail-list a {
  display: flex;
  gap: 9px;
  padding: 7px 10px;
  border-left: 1px solid var(--line);
  color: var(--muted);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 1.5;
  transition: color .2s ease, border-left-color .2s ease, background-color .2s ease;
}

.page-faq .rail-list a:hover,
.page-faq .rail-list a:focus-visible {
  color: var(--ink);
  border-left-color: var(--cyan);
  background: var(--faq-cyan-soft);
}

.page-faq .rail-list a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .rail-list a .mono {
  flex: 0 0 auto;
  padding-top: 2px;
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--pulse);
}

/* 问答分组 */
.page-faq .faq-group {
  margin-bottom: 44px;
}

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

.page-faq .faq-group-title {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .faq-group-title .mono {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-faq .faq-inline-figure {
  margin: 0 0 20px;
}

.page-faq .faq-inline-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-inline-figure figcaption {
  padding-top: 10px;
  font-size: 13px;
  line-height: 1.62;
  color: var(--muted);
}

/* 折叠问答 */
.page-faq .qa {
  margin-bottom: 8px;
  border: 1px solid var(--line);
  background: var(--panel);
  scroll-margin-top: 96px;
}

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

.page-faq .qa[open] {
  border-color: rgba(36, 224, 210, .34);
}

.page-faq .qa-summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 18px 15px 20px;
  cursor: pointer;
  list-style: none;
  transition: background-color .2s ease;
}

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

.page-faq .qa-summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--line);
  transition: background-color .24s ease;
}

.page-faq .qa[open] .qa-summary::before {
  background: var(--cyan);
}

.page-faq .qa-summary:hover {
  background: var(--faq-cyan-soft);
}

.page-faq .qa-summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .qa-num {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
  transition: color .2s ease;
}

.page-faq .qa[open] .qa-num {
  color: var(--cyan);
}

.page-faq .qa-q {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.58;
  color: var(--ink);
}

.page-faq .qa-sign {
  position: relative;
  flex: 0 0 14px;
  width: 14px;
  height: 14px;
  margin-top: 6px;
}

.page-faq .qa-sign::before,
.page-faq .qa-sign::after {
  content: "";
  position: absolute;
  background: var(--muted);
  transition: transform .24s ease, background-color .24s ease;
}

.page-faq .qa-sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1px;
}

.page-faq .qa-sign::after {
  left: 6px;
  top: 0;
  width: 1px;
  height: 14px;
}

.page-faq .qa[open] .qa-sign::before {
  background: var(--cyan);
}

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

.page-faq .qa-body {
  margin: 0;
  padding: 14px 18px 18px 20px;
  border-top: 1px solid var(--line-soft);
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

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

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

.page-faq .qa-body strong {
  font-weight: 600;
  color: var(--ink);
}

/* 纠错反馈 */
.page-faq .faq-report {
  padding: 0 0 70px;
}

.page-faq .report-panel {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding: 26px 22px 28px;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(36, 26, 70, .62), rgba(14, 23, 48, .94));
}

.page-faq .report-panel::after {
  content: "";
  position: absolute;
  left: 38%;
  right: -14%;
  bottom: -70%;
  height: 280px;
  pointer-events: none;
  background: radial-gradient(circle at 50% 50%, rgba(36, 224, 210, .18), transparent 68%);
}

.page-faq .report-copy,
.page-faq .report-side {
  position: relative;
  z-index: 1;
}

.page-faq .report-copy h2 {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.8vw, 30px);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .report-copy p {
  margin: 0 0 16px;
  max-width: 38em;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

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

.page-faq .report-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .report-list li {
  position: relative;
  padding-left: 15px;
  font-size: 15px;
  line-height: 1.68;
  color: var(--ink);
}

.page-faq .report-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 5px;
  height: 5px;
  background: var(--pulse);
}

.page-faq .report-list strong {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .report-side {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.page-faq .paper-tag {
  display: inline-block;
  padding: 5px 11px;
  border: 1px solid var(--ink-dark);
  background: var(--paper);
  color: var(--ink-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  box-shadow: 2px 2px 0 rgba(7, 12, 20, .9), 4px 4px 0 rgba(36, 224, 210, .38);
}

.page-faq .report-contact {
  margin: 0;
  width: 100%;
  display: grid;
  gap: 11px;
}

.page-faq .report-contact > div {
  display: grid;
  gap: 3px;
}

.page-faq .report-contact dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-faq .report-contact dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
  overflow-wrap: anywhere;
}

/* 尾段入口 */
.page-faq .faq-next {
  padding: 38px 0;
  border-top: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .faq-next-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px 32px;
}

.page-faq .faq-next-text {
  flex: 1 1 300px;
  min-width: 0;
}

.page-faq .faq-next-kicker {
  margin: 0 0 6px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--pulse);
}

.page-faq .faq-next h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 3.4vw, 27px);
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .faq-next-actions {
  flex: 0 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 平板与桌面 */
@media (min-width: 620px) {
  .page-faq .faq-hero-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 560px) and (max-width: 999px) {
  .page-faq .rail-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 12px;
  }
}

@media (min-width: 800px) {
  .page-faq .step-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }
}

@media (max-width: 799px) {
  .page-faq .step-item:not(:last-child)::after {
    display: none;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 48px;
    align-items: center;
    padding-top: 52px;
    padding-bottom: 64px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 46px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
    align-self: start;
    max-height: calc(100vh - 130px);
    overflow-y: auto;
  }
}

@media (min-width: 860px) {
  .page-faq .report-panel {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
    gap: 40px;
    padding: 34px 32px 36px;
  }
}
<<<END>>>