.page-faq {
  --faq-line: var(--line);
  --faq-panel-w: 340px;
}

.page-faq .faq-hero {
  padding: 26px 0 22px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero .label {
  display: block;
  margin: 0 0 14px;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  max-width: 22ch;
  font-size: clamp(26px, 4.8vw, 44px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  color: var(--muted);
}

/* 分组快速跳转 */
.page-faq .faq-jump {
  margin: 20px 0 0;
}

.page-faq .faq-jump__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 12px;
  border: 1px solid var(--faq-line);
  background: var(--panel);
  color: var(--text);
  font-size: 13px;
  line-height: 1.3;
  text-decoration: none;
  transition: border-color 160ms var(--ease), color 160ms var(--ease), background 160ms var(--ease);
}

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

.page-faq .faq-jump__link[data-active] {
  border-color: var(--orange);
  color: var(--orange);
  background: rgba(255, 106, 43, 0.08);
}

.page-faq .faq-jump__idx {
  color: var(--muted);
  font-size: 11px;
}

.page-faq .faq-jump__link[data-active] .faq-jump__idx {
  color: var(--orange);
}

/* 布局 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  margin-top: 30px;
  padding-bottom: 56px;
}

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

/* 分组 */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--bar-h) + var(--status-h) + 16px);
}

.page-faq .faq-group + .faq-group {
  margin-top: 44px;
}

.page-faq .faq-group__head {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 18px;
  padding-left: 16px;
}

.page-faq .faq-group__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  bottom: 3px;
  width: 4px;
  background: var(--orange);
}

.page-faq .faq-group__idx {
  flex: none;
  color: var(--cyan);
  font-size: 12px;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--text);
}

.page-faq .faq-group__lead {
  margin: 0 0 20px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* 问答列表 */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-item {
  padding: 16px 0 18px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-item__q {
  display: flex;
  gap: 10px;
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-item__no {
  flex: none;
  padding-top: 3px;
  color: var(--cyan);
  font-size: 12px;
}

.page-faq .faq-item__a {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-link {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  color: var(--orange);
  text-decoration-color: currentColor;
}

/* 配图 */
.page-faq .faq-figure {
  margin: 4px 0 24px;
}

/* 发信准备 */
.page-faq .faq-prep {
  margin-top: 22px;
  padding: 18px 18px 20px;
  background: var(--paper);
  color: var(--paper-ink);
  border: 3px solid var(--paper-ink);
  box-shadow: var(--shadow-paper);
}

.page-faq .faq-prep .label {
  display: block;
  margin: 0 0 12px;
  color: rgba(26, 20, 16, 0.62);
}

.page-faq .faq-prep__list {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-prep__list li {
  position: relative;
  padding: 6px 0 6px 18px;
  border-bottom: 1px dashed rgba(26, 20, 16, 0.24);
  font-size: 14px;
  line-height: 1.6;
}

.page-faq .faq-prep__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 8px;
  background: var(--orange);
}

.page-faq .faq-prep__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(26, 20, 16, 0.74);
}

.page-faq .faq-prep__note .faq-link {
  color: #8a3a12;
}

/* 侧栏清单面板 */
.page-faq .faq-side {
  min-width: 0;
}

.page-faq .faq-checklist {
  counter-reset: done;
  padding: 20px 18px 18px;
  background: var(--paper);
  color: var(--paper-ink);
  border: 3px solid var(--paper-ink);
  box-shadow: var(--shadow-paper);
}

.page-faq .faq-checklist .label {
  display: block;
  margin: 0 0 10px;
  color: rgba(26, 20, 16, 0.6);
}

.page-faq .faq-checklist h2 {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--paper-ink);
}

.page-faq .faq-checklist__lead {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(26, 20, 16, 0.72);
}

.page-faq .faq-progress {
  height: 6px;
  margin-bottom: 14px;
  background: rgba(26, 20, 16, 0.14);
  border: 1px solid rgba(26, 20, 16, 0.28);
  overflow: hidden;
}

.page-faq .faq-progress__fill {
  display: block;
  height: 100%;
  width: calc((var(--c1, 0) + var(--c2, 0) + var(--c3, 0) + var(--c4, 0) + var(--c5, 0) + var(--c6, 0) + var(--c7, 0) + var(--c8, 0) + var(--c9, 0)) / 9 * 100%);
  background: var(--green);
  transition: width 220ms var(--ease);
}

.page-faq .faq-checklist__list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.page-faq .check-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
  padding: 8px 9px;
  border: 1px solid rgba(26, 20, 16, 0.22);
  background: rgba(255, 255, 255, 0.48);
  color: var(--paper-ink);
  font-family: inherit;
  font-size: 13px;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  transition: border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-faq .check-item:hover,
.page-faq .check-item:focus-visible {
  border-color: var(--orange);
}

.page-faq .check-item[aria-pressed="true"] {
  border-color: rgba(61, 214, 140, 0.75);
  background: rgba(61, 214, 140, 0.16);
}

.page-faq .check-item__state {
  flex: none;
  min-width: 3.4em;
  color: var(--red);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.page-faq .check-item[aria-pressed="true"] .check-item__state {
  color: #1f7a4d;
}

.page-faq .check-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-progress__count {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 12px;
  color: rgba(26, 20, 16, 0.68);
}

.page-faq .faq-progress__count .label {
  margin: 0;
  color: rgba(26, 20, 16, 0.6);
}

.page-faq .faq-progress__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--paper-ink);
}

.page-faq .faq-progress__num::after {
  content: counter(done) " / 9";
}

.page-faq .faq-checklist:has(.check-item:nth-child(1)[aria-pressed="true"]) { --c1: 1; }
.page-faq .faq-checklist:has(.check-item:nth-child(2)[aria-pressed="true"]) { --c2: 1; }
.page-faq .faq-checklist:has(.check-item:nth-child(3)[aria-pressed="true"]) { --c3: 1; }
.page-faq .faq-checklist:has(.check-item:nth-child(4)[aria-pressed="true"]) { --c4: 1; }
.page-faq .faq-checklist:has(.check-item:nth-child(5)[aria-pressed="true"]) { --c5: 1; }
.page-faq .faq-checklist:has(.check-item:nth-child(6)[aria-pressed="true"]) { --c6: 1; }
.page-faq .faq-checklist:has(.check-item:nth-child(7)[aria-pressed="true"]) { --c7: 1; }
.page-faq .faq-checklist:has(.check-item:nth-child(8)[aria-pressed="true"]) { --c8: 1; }
.page-faq .faq-checklist:has(.check-item:nth-child(9)[aria-pressed="true"]) { --c9: 1; }

/* 窄屏微调 */
@media (min-width: 560px) {
  .page-faq .faq-item__a {
    padding-left: 34px;
  }
}

/* 桌面：左问答 + 右常驻清单 */
@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) var(--faq-panel-w);
    gap: 48px;
  }

  .page-faq .faq-group__lead {
    padding-left: 16px;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--bar-h) + var(--status-h) + 20px);
    align-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-progress__fill,
  .page-faq .check-item,
  .page-faq .faq-jump__link {
    transition: none;
  }
}