.page-faq {
  --faq-gap: clamp(14px, 2vw, 26px);
  --faq-pad: clamp(16px, 2.6vw, 28px);
  background: var(--pl-deep);
  color: var(--pl-paper);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-faq .faq-topbar {
  padding-top: clamp(14px, 2.4vw, 24px);
}

.page-faq a {
  color: var(--pl-cyan);
}

/* 首屏 */
.page-faq .faq-hero {
  padding: clamp(26px, 5vw, 58px) 0 clamp(28px, 5vw, 54px);
  border-bottom: 1px solid var(--pl-line-strong);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-faq .faq-kicker {
  margin: 0 0 14px;
  font-family: var(--pl-font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--pl-cyan);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--pl-font-display);
  font-size: clamp(34px, 7vw, 66px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  text-align: left;
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--pl-muted);
}

.page-faq .faq-hero__index {
  border-top: 2px solid var(--pl-cyan);
  padding-top: 14px;
}

.page-faq .faq-index__label {
  margin: 0 0 6px;
  font-family: var(--pl-font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--pl-rock);
}

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

.page-faq .faq-index__item {
  display: grid;
  grid-template-columns: 2.6em minmax(0, 1fr) auto;
  gap: 10px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--pl-line);
}

.page-faq .faq-index__num {
  font-family: var(--pl-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--pl-cyan);
}

.page-faq .faq-index__name {
  font-size: 15px;
  font-weight: 600;
}

.page-faq .faq-index__count {
  font-family: var(--pl-font-mono);
  font-size: 12px;
  color: var(--pl-rock);
}

.page-faq .faq-index__foot {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--pl-muted);
}

/* 章节标题 */
.page-faq .faq-section {
  padding-top: clamp(34px, 5vw, 62px);
}

.page-faq .faq-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--pl-line-strong);
  position: relative;
}

.page-faq .faq-section__head::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 56px;
  height: 2px;
  background: var(--pl-cyan);
}

.page-faq .faq-section__title {
  margin: 0;
  font-family: var(--pl-font-display);
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-faq .faq-section__hint {
  margin: 0;
  font-family: var(--pl-font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--pl-rock);
}

/* 分段切换 */
.page-faq .faq-tabs {
  margin-top: clamp(18px, 2.4vw, 26px);
}

.page-faq .faq-tabs__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.page-faq .faq-tab {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-start;
  padding: 14px 14px 18px;
  background: var(--pl-slate);
  border: 1px solid var(--pl-line);
  color: var(--pl-paper);
  font-family: var(--pl-font-body);
  text-align: left;
  cursor: pointer;
  appearance: none;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-tab::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--pl-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.24s ease;
}

.page-faq .faq-tab:hover {
  border-color: var(--pl-line-strong);
}

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

.page-faq .faq-tab[aria-selected="true"]::after {
  transform: scaleX(1);
}

.page-faq .faq-tab[aria-selected="true"] .faq-tab__label {
  color: var(--pl-cyan);
}

.page-faq .faq-tab__num {
  font-family: var(--pl-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--pl-rock);
}

.page-faq .faq-tab__label {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.3;
}

/* 面板 */
.page-faq .faq-panel {
  margin-top: clamp(20px, 3vw, 30px);
  outline: none;
}

.page-faq .faq-panel + .faq-panel {
  margin-top: clamp(34px, 5vw, 52px);
  padding-top: clamp(22px, 3vw, 30px);
  border-top: 1px solid var(--pl-line);
}

.page-faq .faq-panel__head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 6px;
}

.page-faq .faq-panel__kicker {
  margin: 0;
  font-family: var(--pl-font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--pl-cyan);
}

.page-faq .faq-panel__title {
  margin: 0;
  font-family: var(--pl-font-display);
  font-size: clamp(19px, 2.5vw, 26px);
  line-height: 1.2;
}

/* 图文 */
.page-faq .faq-figure {
  margin: 18px 0 10px;
  border: 1px solid var(--pl-line);
  background: var(--pl-void);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 12px;
  border-top: 1px solid var(--pl-line);
  font-family: var(--pl-font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--pl-muted);
}

/* 问答折叠 */
.page-faq .qa {
  border-bottom: 1px solid var(--pl-line);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: 2.4em minmax(0, 1fr) auto;
  gap: 10px;
  align-items: start;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--pl-cyan);
  outline-offset: 3px;
}

.page-faq .qa__num {
  font-family: var(--pl-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--pl-cyan);
  padding-top: 4px;
}

.page-faq .qa__text {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
}

.page-faq .qa__mark {
  margin-top: 3px;
  color: var(--pl-cyan);
  transition: transform 0.2s ease;
}

.page-faq .qa[open] .qa__mark {
  transform: rotate(180deg);
}

.page-faq .qa__body {
  margin: 0 0 18px;
  padding: var(--faq-pad);
  background: var(--pl-paper);
  color: var(--pl-deep);
  border-left: 3px solid var(--pl-cyan);
  font-size: 16px;
  line-height: 1.75;
}

.page-faq .qa__body p {
  margin: 0 0 12px;
  max-width: 64ch;
}

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

/* 步骤块 */
.page-faq .steps {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .steps__item {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 10px 12px;
  background: rgba(11, 27, 51, 0.06);
  border-left: 2px solid var(--pl-moss);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .steps__item:first-child {
  border-left-color: var(--pl-clay);
}

.page-faq .steps__n {
  font-family: var(--pl-font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--pl-slate);
  padding-top: 2px;
}

/* 条目数徽标示意 */
.page-faq .faq-badge-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 4px;
}

.page-faq .faq-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 24px;
  padding: 0 9px;
  background: var(--pl-cyan);
  color: var(--pl-void);
  font-family: var(--pl-font-mono);
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
}

.page-faq .faq-badge__note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--pl-rock);
  margin: 0;
}

/* 适配段 */
.page-faq .faq-fit {
  margin-top: clamp(32px, 5vw, 60px);
  padding-top: clamp(30px, 4.5vw, 52px);
  border-top: 1px solid var(--pl-line-strong);
}

.page-faq .faq-fit__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  margin-top: clamp(18px, 2.4vw, 26px);
}

.page-faq .faq-fit__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: var(--faq-pad);
  background: var(--pl-slate);
  border: 1px solid var(--pl-line);
  border-top: 2px solid var(--pl-moss);
}

.page-faq .faq-fit__card:nth-child(2) {
  border-top-color: var(--pl-cyan);
}

.page-faq .faq-fit__card:nth-child(3) {
  border-top-color: var(--pl-clay);
}

.page-faq .faq-fit__num {
  margin: 0;
  font-family: var(--pl-font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--pl-rock);
}

.page-faq .faq-fit__title {
  margin: 0;
  font-size: 19px;
  line-height: 1.35;
  font-weight: 700;
}

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

.page-faq .faq-fit__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 2px 0 0;
  padding: 0;
}

.page-faq .faq-fit__tag {
  padding: 4px 9px;
  border: 1px solid var(--pl-line-strong);
  font-family: var(--pl-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--pl-paper);
}

.page-faq .faq-fit__tag:nth-child(2) {
  color: var(--pl-cyan);
  border-color: var(--pl-cyan);
}

.page-faq .faq-fit__tag:nth-child(3) {
  color: var(--pl-orange);
  border-color: var(--pl-orange);
}

/* 联系段 */
.page-faq .faq-help {
  margin-top: clamp(32px, 5vw, 60px);
  padding-top: clamp(30px, 4.5vw, 52px);
  border-top: 1px solid var(--pl-line-strong);
}

.page-faq .faq-help__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-faq .faq-help__lede {
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--pl-muted);
}

.page-faq .faq-help__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.page-faq .faq-link {
  display: inline-flex;
  align-items: center;
  padding: 11px 16px;
  border: 1px solid var(--pl-line-strong);
  color: var(--pl-paper);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

.page-faq .faq-link--accent {
  background: var(--pl-orange);
  border-color: var(--pl-orange);
  color: var(--pl-void);
}

.page-faq .faq-link--accent:hover {
  background: var(--pl-paper);
  border-color: var(--pl-paper);
  color: var(--pl-void);
}

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

.page-faq .faq-help__channel {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--pl-line);
}

.page-faq .faq-help__label {
  font-family: var(--pl-font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--pl-rock);
}

.page-faq .faq-help__value {
  font-size: 16px;
  line-height: 1.6;
  word-break: break-word;
}

.page-faq .faq-help__value--mono {
  font-family: var(--pl-font-mono);
  letter-spacing: 0.02em;
}

.page-faq .faq-help__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--pl-muted);
  max-width: 52ch;
}

/* 响应式 */
@media (min-width: 720px) {
  .page-faq .faq-tabs__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-tab {
    padding: 16px 16px 20px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

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

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }

  .page-faq .qa__q {
    grid-template-columns: 3em minmax(0, 1fr) auto;
    gap: 14px;
    padding: 18px 0;
  }

  .page-faq .qa__text {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}