.page-faq {
  --faq-gap-sm: 14px;
  --faq-gap-md: 24px;
  --faq-gap-lg: 40px;
  background: var(--ink);
  color: var(--text);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 40px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(63, 224, 204, .07) 0%, rgba(7, 26, 22, 0) 62%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(63, 224, 204, .055) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(0deg, rgba(63, 224, 204, .04) 0 1px, transparent 1px 88px);
}

.page-faq .faq-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 26px;
  margin-top: 20px;
}

.page-faq .faq-hero-lead h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.1rem, 8vw, 3.6rem);
  line-height: 1.06;
  letter-spacing: -.01em;
  color: var(--text);
  max-width: 16ch;
}

.page-faq .faq-hero-lead .lede {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 60ch;
}

.page-faq .faq-hero-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.page-faq .faq-hero-index li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 14px;
  background: var(--panel);
}

.page-faq .faq-idx-num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1.1;
  flex: 0 0 auto;
}

.page-faq .faq-idx-text {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding: 34px 0 56px;
  }

  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: end;
    gap: 48px;
    margin-top: 38px;
  }
}

/* ---------- 主体栅格 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: var(--faq-gap-md);
  padding-top: 8px;
  padding-bottom: 48px;
}

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

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

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 48px;
    align-items: start;
    padding-bottom: 72px;
  }

  .page-faq .faq-rail {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

/* ---------- 章节 ---------- */
.page-faq .faq-sec {
  padding: 40px 0 8px;
}

.page-faq .faq-sec + .faq-sec {
  border-top: 1px solid var(--line-soft);
  margin-top: 8px;
}

.page-faq .section-meta {
  color: var(--muted-dim);
}

.page-faq .prose p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  max-width: 68ch;
}

/* ---------- 三步条 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: var(--faq-gap-sm);
}

.page-faq .faq-step {
  position: relative;
  padding: 20px 18px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(63, 224, 204, 0) 92%);
}

.page-faq .faq-step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  opacity: .85;
}

.page-faq .faq-step-title {
  margin: 10px 0 8px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--text);
}

.page-faq .faq-step-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

@media (min-width: 768px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

/* ---------- 折叠组 ---------- */
.page-faq .accordion {
  margin-top: 24px;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-q {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 2px;
  background: none;
  border: 0;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  transition: color 180ms ease;
}

.page-faq .accordion-trigger:hover,
.page-faq .accordion-trigger:focus-visible {
  color: var(--cyan-soft);
}

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

.page-faq .accordion-icon {
  position: relative;
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--ink);
}

.page-faq .accordion-icon::before,
.page-faq .accordion-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 1.5px;
  background: var(--cyan);
  transform: translate(-50%, -50%);
  transition: transform 180ms ease, opacity 180ms ease;
}

.page-faq .accordion-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .accordion-trigger[aria-expanded="true"] .accordion-icon::after {
  transform: translate(-50%, -50%) rotate(0deg);
  opacity: 0;
}

.page-faq .accordion-panel-inner {
  padding: 2px 2px 22px 16px;
  border-left: 4px solid var(--cyan);
}

.page-faq .accordion-panel-inner > p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 66ch;
}

.page-faq .faq-fields .accordion-panel-inner {
  padding-left: 0;
  border-left: 0;
}

.page-faq .faq-fields .accordion-item {
  background: transparent;
}

/* ---------- 字段对照 ---------- */
.page-faq .field-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .field-row {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  background: var(--panel);
}

.page-faq .field-key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: .02em;
}

.page-faq .field-val {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

@media (min-width: 640px) {
  .page-faq .field-row {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
    padding: 13px 16px;
  }
}

/* ---------- 图 ---------- */
.page-faq .faq-fig {
  margin: 28px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.page-faq .faq-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  filter: saturate(.72) contrast(1.04);
}

.page-faq .faq-fig .img-cap {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted-dim);
  border-top: 1px solid var(--line);
}

/* ---------- 复制与清单 ---------- */
.page-faq .faq-copy-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-checklist {
  margin-top: 18px;
  padding: 16px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
  border-radius: var(--radius);
}

.page-faq .faq-checklist-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .faq-checklist-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-checklist-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .faq-checklist-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 9px;
  height: 2px;
  background: var(--cyan);
}

/* ---------- 提示框 ---------- */
.page-faq .faq-callout {
  display: grid;
  gap: 6px;
  margin: 24px 0 0;
  padding: 15px 18px;
  background: rgba(63, 224, 204, .07);
  border-left: 4px solid var(--amber);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-faq .faq-callout--amber {
  background: rgba(240, 169, 59, .08);
}

.page-faq .faq-callout-title {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--cyan-soft);
}

.page-faq .faq-callout p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 数据带 ---------- */
.page-faq .faq-band-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.page-faq .faq-band-grid .stat {
  padding: 16px 14px;
  background: var(--panel);
}

.page-faq .faq-band-grid .stat-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 5vw, 2rem);
  font-weight: 700;
  color: var(--cyan);
  line-height: 1.1;
}

.page-faq .faq-band-grid .stat-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--muted);
}

@media (min-width: 640px) {
  .page-faq .faq-band-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 更正清单 ---------- */
.page-faq .faq-req-list {
  list-style: none;
  counter-reset: faq-req;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-req-list li {
  position: relative;
  padding-left: 32px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text);
  max-width: 66ch;
}

.page-faq .faq-req-list li::before {
  counter-increment: faq-req;
  content: counter(faq-req, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .12em;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .faq-contact {
  margin-top: 26px;
  padding: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 4px solid var(--cyan);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.page-faq .faq-contact-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .faq-contact-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 10px;
  font-size: 15.5px;
}

.page-faq .faq-contact-key {
  flex: 0 0 auto;
  font-size: 13px;
  color: var(--muted-dim);
}

.page-faq .faq-contact-note {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 224, 204, .4);
}

.page-faq .faq-link:hover {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan-soft);
}

/* ---------- 侧栏目录 ---------- */
.page-faq .faq-rail .anchor-nav {
  padding: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.page-faq .faq-rail .anchor-nav-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .faq-rail .anchor-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-rail .anchor-nav-list a {
  display: block;
  padding: 8px 10px;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.page-faq .faq-rail .anchor-nav-list a:hover,
.page-faq .faq-rail .anchor-nav-list a:focus-visible {
  color: var(--text);
  background: rgba(63, 224, 204, .07);
}

.page-faq .faq-rail .anchor-nav-list a[aria-current="true"] {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(63, 224, 204, .09);
}

.page-faq .faq-rail-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--muted-dim);
  text-decoration: none;
  border-bottom: 1px dashed var(--line);
}

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

/* ---------- 底部去向 ---------- */
.page-faq .faq-next {
  padding: 0 0 56px;
}

.page-faq .faq-next-grid {
  display: grid;
  gap: 14px;
}

.page-faq .faq-next-card {
  display: grid;
  gap: 8px;
  padding: 20px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: transform 200ms ease, border-color 200ms ease;
}

.page-faq .faq-next-card:hover,
.page-faq .faq-next-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--cyan);
}

.page-faq .faq-next-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--amber);
}

.page-faq .faq-next-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
}

.page-faq .faq-next-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

@media (min-width: 768px) {
  .page-faq .faq-next-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .faq-next-card--wide {
    grid-column: span 2;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-next {
    padding-bottom: 88px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .accordion-icon::before,
  .page-faq .accordion-icon::after,
  .page-faq .faq-next-card,
  .page-faq .accordion-trigger {
    transition: none;
  }

  .page-faq .faq-next-card:hover,
  .page-faq .faq-next-card:focus-visible {
    transform: none;
  }
}