.page-faq {
  --faq-pad-y: clamp(40px, 7vw, 84px);
}

.page-faq [id] {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

/* ---------- 封面带 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--grid);
  padding: clamp(16px, 3vw, 32px) 0 clamp(40px, 8vw, 92px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 460px at 78% -14%, rgba(0, 229, 255, 0.16), transparent 62%),
    radial-gradient(760px 380px at 4% 110%, rgba(255, 176, 32, 0.1), transparent 66%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image: linear-gradient(to right, rgba(34, 49, 94, 0.55) 1px, transparent 1px);
  background-size: 72px 100%;
}

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

.page-faq .breadcrumb {
  margin-bottom: clamp(26px, 5vw, 54px);
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
}

.page-faq .faq-hero-lead .display {
  margin: 14px 0 0;
  font-size: clamp(34px, 6.4vw, 76px);
  line-height: 1.06;
}

.page-faq .faq-hero-lead .display::after {
  content: "";
  display: block;
  width: clamp(90px, 22vw, 260px);
  height: 3px;
  margin-top: clamp(16px, 2.4vw, 26px);
  background: linear-gradient(90deg, var(--volt), rgba(0, 229, 255, 0));
  transform: skewX(-28deg);
}

.page-faq .faq-hero-text {
  max-width: 60ch;
  margin: clamp(20px, 3vw, 30px) 0 0;
  color: var(--muted);
  font-size: clamp(15px, 1.55vw, 17px);
  line-height: 1.8;
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

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

.page-faq .faq-hero-stats > li {
  background: rgba(7, 11, 30, 0.86);
  padding: clamp(14px, 2.2vw, 20px);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-faq .faq-hero-stats .stat-value {
  font-size: clamp(26px, 3.6vw, 42px);
  color: var(--amber);
  line-height: 1;
}

.page-faq .faq-hero-stats .stat-label {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
  }
}

/* ---------- 索引带 ---------- */

.page-faq .faq-index {
  border-bottom: 1px solid var(--grid);
}

.page-faq .jump-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--grid);
}

.page-faq .jump-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  align-items: baseline;
  padding: clamp(14px, 2.2vw, 20px) 6px;
  border-bottom: 1px solid var(--grid);
  text-decoration: none;
  color: var(--text);
  transition: background var(--t-fast), border-color var(--t-fast);
}

.page-faq .jump-item:hover,
.page-faq .jump-item:focus-visible {
  background: rgba(0, 229, 255, 0.06);
  border-bottom-color: var(--volt);
}

.page-faq .jump-no {
  color: var(--volt);
  font-size: 13px;
  letter-spacing: 0.12em;
}

.page-faq .jump-title {
  font-weight: 600;
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.5;
}

.page-faq .jump-meta {
  grid-column: 2;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

/* ---------- 通用小节说明 ---------- */

.page-faq .section-head {
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-faq .section-note {
  max-width: 62ch;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 版本对照 ---------- */

.page-faq .faq-compare {
  border-bottom: 1px solid var(--grid);
}

.page-faq .compare-wrap {
  position: relative;
  border: 1px solid var(--grid);
  background: var(--ink);
}

.page-faq .diff-toggle {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-faq .compare-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 22px;
  padding: 14px clamp(14px, 2vw, 20px);
  border-bottom: 1px solid var(--grid);
  background: var(--panel);
}

.page-faq .diff-switch {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--muted);
  user-select: none;
  transition: color var(--t-fast);
}

.page-faq .diff-switch-track {
  position: relative;
  flex: none;
  width: 42px;
  height: 22px;
  border: 1px solid var(--grid);
  background: var(--ink);
  transition: border-color var(--t-fast);
}

.page-faq .diff-switch-knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: var(--muted);
  transition: transform var(--t-fast), background var(--t-fast);
}

.page-faq .diff-toggle:checked ~ .compare-tools .diff-switch {
  color: var(--amber);
}

.page-faq .diff-toggle:checked ~ .compare-tools .diff-switch-track {
  border-color: var(--amber);
}

.page-faq .diff-toggle:checked ~ .compare-tools .diff-switch-knob {
  transform: translateX(20px);
  background: var(--amber);
}

.page-faq .diff-toggle:focus-visible ~ .compare-tools .diff-switch-track {
  outline: 2px solid var(--volt);
  outline-offset: 3px;
}

.page-faq .diff-legend {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 0 auto;
  font-size: 13px;
  color: var(--muted);
}

.page-faq .legend-line {
  display: block;
  width: 3px;
  height: 16px;
  background: var(--amber);
}

.page-faq .compare-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--grid);
}

.page-faq .compare-col {
  background: var(--ink);
  padding: clamp(16px, 2.4vw, 26px);
}

.page-faq .compare-col-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--grid);
}

.page-faq .compare-col-tag {
  color: var(--muted);
  font-size: 13px;
}

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

.page-faq .compare-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0 10px 12px;
  border-left: 3px solid transparent;
  border-bottom: 1px solid rgba(34, 49, 94, 0.55);
  font-size: 14px;
}

.page-faq .compare-row:last-child {
  border-bottom: 0;
}

.page-faq .compare-row.is-diff {
  border-left-color: var(--amber);
  background: linear-gradient(90deg, rgba(255, 176, 32, 0.13), rgba(255, 176, 32, 0) 74%);
}

.page-faq .compare-key {
  color: var(--text);
}

.page-faq .compare-val {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

.page-faq .compare-row.is-diff .compare-val {
  color: var(--amber);
}

.page-faq .diff-toggle:checked ~ .compare-grid .compare-row:not(.is-diff) {
  display: none;
}

@media (min-width: 800px) {
  .page-faq .compare-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 图片 ---------- */

.page-faq .faq-figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
}

.page-faq .media--diff {
  aspect-ratio: 3 / 2;
}

.page-faq .media--flow {
  aspect-ratio: 14 / 5;
}

.page-faq .media > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 三类差异 ---------- */

.page-faq .faq-types {
  border-bottom: 1px solid var(--grid);
}

.page-faq .type-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color var(--t-fast), transform var(--t-fast);
}

.page-faq .type-card:hover,
.page-faq .type-card:focus-within {
  border-color: var(--volt);
  transform: translateY(-2px);
}

.page-faq .type-icon {
  width: 46px;
  height: 46px;
  flex: none;
  color: var(--volt);
}

.page-faq .type-card h3 {
  margin: 0;
  font-size: clamp(17px, 1.9vw, 20px);
  line-height: 1.45;
  color: var(--text);
}

.page-faq .type-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-faq .type-next {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--grid);
  font-size: 13.5px;
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-transfer {
  border-bottom: 1px solid var(--grid);
}

.page-faq .qa-list {
  border-top: 1px solid var(--grid);
}

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

.page-faq .qa-q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: clamp(14px, 2vw, 20px) 4px;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.6;
  color: var(--text);
  transition: color var(--t-fast);
}

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

.page-faq .qa-q:hover {
  color: var(--volt);
}

.page-faq .qa-mark {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  border: 1px solid var(--grid);
  transition: border-color var(--t-fast);
}

.page-faq .qa-mark::before,
.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  background: var(--volt);
}

.page-faq .qa-mark::before {
  left: 5px;
  right: 5px;
  top: 50%;
  height: 1px;
  transform: translateY(-50%);
}

.page-faq .qa-mark::after {
  top: 5px;
  bottom: 5px;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
  transition: opacity var(--t-fast);
}

.page-faq .qa-item[open] .qa-mark {
  border-color: var(--volt);
}

.page-faq .qa-item[open] .qa-mark::after {
  opacity: 0;
}

.page-faq .qa-item[open] .qa-q {
  color: var(--volt-soft);
}

.page-faq .qa-a {
  max-width: 72ch;
  padding: 0 4px 22px 40px;
}

.page-faq .qa-a p {
  margin: 0 0 1em;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

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

/* ---------- 排查顺序 ---------- */

.page-faq .faq-troubleshoot {
  border-bottom: 1px solid var(--grid);
}

.page-faq .steps {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  border-top: 1px solid var(--grid);
}

.page-faq .step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: clamp(18px, 2.6vw, 28px) 4px;
  border-bottom: 1px solid var(--grid);
}

.page-faq .step-no {
  color: var(--volt);
  font-size: clamp(20px, 3vw, 30px);
  line-height: 1;
}

.page-faq .step-body h3 {
  margin: 0 0 10px;
  font-size: clamp(16px, 1.8vw, 19px);
  line-height: 1.5;
  color: var(--text);
}

.page-faq .step-body p {
  margin: 0 0 12px;
  max-width: 68ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .step-check {
  margin: 0;
  padding: 10px 12px;
  border-left: 3px solid var(--grid);
  background: rgba(16, 26, 60, 0.6);
  font-size: 13.5px;
}

.page-faq .step-check .mono {
  color: var(--volt-soft);
}

/* ---------- 联系路径 ---------- */

.page-faq .support-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-faq .support-main,
.page-faq .support-side {
  background: var(--panel);
  padding: clamp(20px, 3vw, 34px);
}

.page-faq .support-main h2 {
  margin: 12px 0 16px;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.3;
  color: var(--text);
}

.page-faq .support-main > p {
  max-width: 56ch;
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .support-contact {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px 18px;
  margin: 0;
  font-size: 14px;
}

.page-faq .support-contact dt {
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-faq .support-contact dd {
  margin: 0;
  color: var(--text);
  word-break: break-word;
}

.page-faq .support-side-title {
  margin: 0 0 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.page-faq .support-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
}

.page-faq .support-list li {
  display: flex;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--grid);
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .support-list li .mono {
  flex: none;
  color: var(--volt);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.page-faq .support-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

@media (min-width: 900px) {
  .page-faq .support-panel {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }
}

@media (min-width: 1040px) {
  .page-faq .jump-item {
    grid-template-columns: auto minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-faq .jump-meta {
    grid-column: 3;
    text-align: right;
  }
}