.page-faq {
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: calc(var(--header-h) + clamp(1.5rem, 4vw, 3rem));
  padding-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .faq-hero-inner {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
}

.page-faq .faq-hero .display {
  margin: 0.85rem 0 0;
  max-width: 20ch;
}

.page-faq .faq-hero .lede {
  margin: 1.1rem 0 0;
  max-width: 58ch;
}

.page-faq .faq-hero-side {
  border-top: 1px solid var(--line);
  padding-top: 0.85rem;
  min-width: 0;
}

.page-faq .faq-hero-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.8;
  max-width: 40ch;
}

@media (min-width: 940px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1fr) 270px;
    align-items: end;
    gap: clamp(2rem, 5vw, 4rem);
  }
  .page-faq .faq-hero-side {
    border-top: 0;
    border-left: 2px solid var(--ember);
    padding-top: 0;
    padding-left: 1.25rem;
  }
}

/* ---------- 首屏数据条 ---------- */
.page-faq .faq-meta {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding: clamp(1rem, 2.5vw, 1.4rem) 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.25rem;
}

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

.page-faq .faq-meta li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.3rem 0.35rem;
  min-width: 0;
}

.page-faq .faq-meta-k {
  flex: 0 0 100%;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
}

.page-faq .faq-meta-v {
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 2.4vw, 1.45rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-meta-u {
  color: var(--muted);
  font-size: 0.75rem;
}

/* ---------- 等宽小注 ---------- */
.page-faq .mono {
  font-family: var(--font-mono);
  color: var(--text);
  letter-spacing: -0.01em;
}

/* ---------- 区段标题 ---------- */
.page-faq .sec-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: clamp(0.85rem, 2.5vw, 1.4rem);
  row-gap: 0.4rem;
  align-items: start;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.9rem;
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
}

.page-faq .sec-head .sec-num {
  grid-row: 1 / 3;
  align-self: start;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3.6vw, 2.2rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ember);
}

.page-faq .sec-head .h2 {
  grid-column: 2;
  margin: 0;
}

.page-faq .sec-head .sec-note {
  grid-column: 2;
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

/* ---------- 01 使用说明 ---------- */
.page-faq .faq-howto {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.page-faq .faq-howto > li {
  min-width: 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.page-faq .howto-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.page-faq .faq-howto .h3 {
  margin: 0.5rem 0 0.5rem;
}

.page-faq .faq-howto p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.8;
  max-width: 42ch;
}

@media (min-width: 820px) {
  .page-faq .faq-howto {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }
  .page-faq .faq-howto > li {
    padding: 1.1rem clamp(1rem, 2.2vw, 1.8rem) 0;
    border-left: 1px solid var(--line);
  }
  .page-faq .faq-howto > li:first-child {
    border-left: 0;
    padding-left: 0;
  }
  .page-faq .faq-howto > li:last-child {
    padding-right: 0;
  }
}

/* ---------- 02 分类索引 ---------- */
.page-faq .faq-index-grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: start;
}

@media (min-width: 1000px) {
  .page-faq .faq-index-grid {
    grid-template-columns: 250px minmax(0, 1fr);
  }
  .page-faq .faq-index-rail {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }
}

.page-faq .faq-index-rail {
  min-width: 0;
  border-top: 2px solid var(--cyan);
  padding-top: 0.9rem;
}

.page-faq .faq-index-rail .eyebrow {
  margin: 0 0 0.75rem;
  color: var(--muted);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-faq .faq-index-list a {
  display: grid;
  grid-template-columns: 1.5rem minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.62rem 0.1rem;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--muted);
  font-size: 0.92rem;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .idx-id {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ember);
  transition: color 180ms var(--ease);
}

.page-faq .faq-index-list a:hover .idx-id,
.page-faq .faq-index-list a:focus-visible .idx-id {
  color: var(--cyan);
}

.page-faq .idx-count {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
}

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

.page-faq .faq-index-figure {
  margin: 0 0 clamp(1.25rem, 3vw, 2rem);
}

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

/* ---------- 分类卡片 ---------- */
.page-faq .faq-cat-grid {
  display: grid;
  gap: clamp(0.85rem, 2vw, 1.15rem);
}

@media (min-width: 700px) {
  .page-faq .faq-cat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .faq-cat-grid > .faq-cat:first-child {
    grid-column: 1 / -1;
  }
}

.page-faq .faq-cat {
  min-width: 0;
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.page-faq .faq-cat-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 0.6rem;
  padding-bottom: 0.7rem;
  margin-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-cat-id {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--ember);
}

.page-faq .faq-cat-head .h3 {
  margin: 0;
}

.page-faq .faq-cat-count {
  font-size: 0.75rem;
  color: var(--muted);
  white-space: nowrap;
}

.page-faq .faq-cat-num {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--gold);
}

.page-faq .faq-cat-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-faq .faq-cat-list li {
  position: relative;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-faq .faq-cat-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 0.45rem;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 03 三步 ---------- */
.page-faq .faq-steps-figure {
  margin: 0 0 clamp(1.5rem, 3.5vw, 2.25rem);
}

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

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  gap: clamp(0.75rem, 2vw, 1.25rem);
  padding: clamp(1.1rem, 2.6vw, 1.6rem) 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-step:last-child {
  border-bottom: 1px solid var(--line);
}

.page-faq .step-num {
  font-family: var(--font-mono);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-faq .step-body {
  min-width: 0;
}

.page-faq .step-body .h3 {
  margin: 0 0 0.5rem;
}

.page-faq .step-body p {
  margin: 0 0 0.55rem;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.8;
  max-width: 62ch;
}

.page-faq .step-body .step-check {
  color: var(--text);
  font-size: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
}

.page-faq .step-check span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--gold);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.12rem 0.55rem;
}

.page-faq .faq-switch {
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
  max-width: 62ch;
}

.page-faq .faq-switch .card-title {
  margin: 0 0 0.6rem;
}

.page-faq .faq-switch p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.8;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-acc {
  max-width: 860px;
  border-top: 1px solid var(--line);
}

.page-faq .acc-item {
  border-bottom: 1px solid var(--line);
  transition: border-color 200ms var(--ease);
}

.page-faq .acc-item:has(.acc-trigger[aria-expanded="true"]) {
  border-bottom-color: var(--gold);
}

.page-faq .acc-trigger {
  width: 100%;
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr) 1.25rem;
  align-items: start;
  gap: 0.75rem;
  margin: 0;
  padding: 0.95rem 0;
  background: none;
  border: 0;
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: color 180ms var(--ease);
}

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

.page-faq .acc-idx {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.75;
  letter-spacing: 0.08em;
  color: var(--ember);
  transition: color 180ms var(--ease);
}

.page-faq .acc-item:has(.acc-trigger[aria-expanded="true"]) .acc-idx {
  color: var(--gold);
}

.page-faq .acc-q {
  min-width: 0;
  font-size: 0.98rem;
  font-weight: 500;
  line-height: 1.7;
}

.page-faq .acc-sign {
  width: 1.25rem;
  height: 1.25rem;
  margin-top: 0.3rem;
  color: var(--cyan);
  transition: color 180ms var(--ease);
}

.page-faq .acc-item:has(.acc-trigger[aria-expanded="true"]) .acc-sign {
  color: var(--gold);
}

.page-faq .acc-sign path {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
}

.page-faq .acc-sign-bar {
  transform-origin: 10px 10px;
  transition: transform 200ms var(--ease);
}

.page-faq .acc-item:has(.acc-trigger[aria-expanded="true"]) .acc-sign-bar {
  transform: scaleY(0);
}

.page-faq .acc-panel {
  display: none;
  padding: 0 0 1.1rem 3.15rem;
}

.page-faq .acc-item:has(.acc-trigger[aria-expanded="true"]) .acc-panel,
.page-faq .acc-item.is-open .acc-panel {
  display: block;
}

.page-faq .acc-panel p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.8;
  max-width: 62ch;
}

@media (max-width: 560px) {
  .page-faq .acc-trigger {
    grid-template-columns: 1.8rem minmax(0, 1fr) 1.15rem;
    gap: 0.55rem;
  }
  .page-faq .acc-panel {
    padding-left: 2.35rem;
  }
}

/* ---------- 07 体验与反馈 ---------- */
.page-faq .faq-feedback-grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
}

@media (min-width: 900px) {
  .page-faq .faq-feedback-grid {
    grid-template-columns: minmax(0, 1fr) 280px;
    align-items: start;
    gap: clamp(2rem, 4vw, 3rem);
  }
}

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

.page-faq .faq-feedback-main .prose {
  margin: 0 0 1rem;
  color: var(--muted);
  line-height: 1.8;
  max-width: 62ch;
}

.page-faq .faq-feedback-main .btn {
  margin-top: 0.75rem;
}

.page-faq .faq-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-faq .faq-checklist li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.88rem;
  line-height: 1.7;
}

.page-faq .faq-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 0.5rem;
  height: 1px;
  background: var(--ember);
}

/* ---------- 页尾刻度 ---------- */
.page-faq .faq-foot {
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
}

.page-faq .faq-top {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-decoration: none;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--line);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-top:hover,
.page-faq .faq-top:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .acc-sign-bar,
  .page-faq .acc-item,
  .page-faq .acc-trigger,
  .page-faq .faq-index-list a,
  .page-faq .idx-id,
  .page-faq .faq-top {
    transition: none;
  }
}