.page-faq {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

.page-faq a {
  color: inherit;
}

.page-faq .faq-hero {
  background-color: var(--ink);
  background-image:
    repeating-linear-gradient(90deg, rgba(46, 76, 64, 0.5) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(0deg, rgba(46, 76, 64, 0.3) 0 1px, transparent 1px 88px);
  border-bottom: 1px solid var(--line);
  padding-block: clamp(22px, 5vw, 54px) clamp(28px, 5vw, 64px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
  min-width: 0;
}

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

.page-faq .faq-hero__crumbs {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--dim);
  margin-bottom: 18px;
}

.page-faq .faq-hero__crumbs a {
  color: var(--dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .faq-hero__crumbs a:hover,
.page-faq .faq-hero__crumbs a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(30px, 6vw, 60px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  max-width: 22ch;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 42ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.82;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__fig {
  margin: 0;
  background: var(--ink-2);
  border: 1px solid var(--line);
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-faq .faq-hero__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* 主题索引条 */
.page-faq .faq-jump {
  background: var(--char);
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
}

.page-faq .faq-jump__inner {
  display: flex;
  min-width: max-content;
  padding-inline: 0;
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 15px 16px;
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  border-right: 1px solid var(--line);
  transition: background-color 180ms var(--ease), color 180ms var(--ease);
}

.page-faq .faq-jump__link .num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--dim);
  transition: color 180ms var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  background: var(--char-2);
  color: var(--accent);
}

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

/* 分组 */
.page-faq .faq-groups {
  padding-block: clamp(10px, 3vw, 26px) clamp(48px, 8vw, 96px);
}

.page-faq .faq-group {
  border-top: 1px solid var(--line);
  padding-block: clamp(26px, 4vw, 46px);
  scroll-margin-top: 96px;
}

.page-faq .faq-group:first-child {
  border-top-color: var(--accent);
}

.page-faq .faq-group--help {
  border-top-color: var(--brick);
}

.page-faq .faq-group__label {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 15px;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--char);
  background: var(--accent);
  padding: 3px 7px;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--paper);
}

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

.page-faq .faq-group--split .faq-group__body {
  display: grid;
  gap: 22px;
}

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

/* 问答条目 */
.page-faq .faq-item {
  border-left: 3px solid transparent;
  border-bottom: 1px solid var(--line);
  transition: border-left-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--accent);
  background: rgba(20, 58, 45, 0.42);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: baseline;
  gap: 11px;
  padding: 15px 10px 15px 10px;
  cursor: pointer;
  list-style: none;
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--dim);
  transition: color 180ms var(--ease);
}

.page-faq .faq-item[open] > summary::after {
  content: "–";
  color: var(--accent);
}

.page-faq .faq-item > summary:hover .faq-item__q {
  color: var(--accent-soft);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--dim);
  flex: none;
}

.page-faq .faq-item__q {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  transition: color 180ms var(--ease);
}

.page-faq .faq-item__a {
  padding: 0 clamp(10px, 3vw, 20px) 20px clamp(32px, 6vw, 46px);
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper);
  opacity: 0.86;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-item__a ol,
.page-faq .faq-item__a ul {
  margin: 8px 0 0;
  padding-left: 1.3em;
  display: grid;
  gap: 7px;
}

.page-faq .faq-item__a li::marker {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-faq .faq-item__a a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(228, 255, 79, 0.34);
  transition: border-bottom-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-faq .faq-item__a a:hover {
  border-bottom-color: var(--accent);
  background: rgba(228, 255, 79, 0.12);
}

.page-faq .faq-item__a a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* 三步路径图 */
.page-faq .faq-steps {
  margin: 16px 0 4px;
  padding: 16px clamp(10px, 3vw, 22px) 12px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-faq .faq-steps__title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--dim);
}

.page-faq .faq-steps__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-steps__track {
  stroke: var(--line);
  stroke-width: 1;
}

.page-faq .faq-steps__disc {
  fill: var(--accent);
}

.page-faq .faq-steps__disc--ghost {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.5;
}

.page-faq .faq-steps__num {
  fill: var(--char);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
}

.page-faq .faq-steps__label {
  fill: var(--paper);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
}

.page-faq .faq-steps__note {
  fill: var(--dim);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}

/* 移动端配图 */
.page-faq .faq-fig {
  margin: 0;
}

.page-faq .faq-fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 720 / 1280;
  object-fit: cover;
  background: var(--ink-2);
  border: 1px solid var(--line);
}

.page-faq .faq-fig figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--dim);
}

/* 人工协助横条 */
.page-faq .faq-callout {
  margin-top: 24px;
  padding: clamp(18px, 3vw, 26px);
  display: grid;
  gap: 12px;
  justify-items: start;
  background: var(--ink-2);
  border-left: 4px solid var(--brick);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-callout p {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.86;
}

@media (min-width: 620px) {
  .page-faq .faq-jump__inner {
    padding-inline: 0;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-group {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: clamp(24px, 4vw, 56px);
    padding-block: clamp(32px, 4.5vw, 56px);
  }

  .page-faq .faq-group__label {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 0;
    padding-left: 14px;
    border-left: 1px solid var(--line);
    align-self: start;
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-group__title {
    writing-mode: vertical-rl;
    font-size: 17px;
    line-height: 1.25;
    letter-spacing: 0.3em;
    color: var(--accent-soft);
  }

  .page-faq .faq-group--help .faq-group__title {
    color: var(--paper);
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(240px, 360px);
    align-items: end;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-group--split .faq-group__body {
    grid-template-columns: minmax(0, 1fr) 236px;
    gap: clamp(24px, 3vw, 40px);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item > summary::after,
  .page-faq .faq-item__q,
  .page-faq .faq-jump__link,
  .page-faq .faq-jump__link .num,
  .page-faq .faq-item__a a {
    transition: none;
  }
}