/* ===== 帮助中心 / page-faq ===== */

.page-faq {
  --faq-gap: clamp(24px, 4vw, 56px);
  --faq-pad: clamp(18px, 3vw, 34px);
  --faq-rule: 1px solid var(--sandstone-deep);
}

/* --- 面屑与首屏 --- */
.page-faq .faq-hero {
  padding: clamp(24px, 4.4vw, 56px) 0 clamp(22px, 3.4vw, 42px);
  border-bottom: var(--faq-rule);
  margin-bottom: var(--faq-gap);
}

.page-faq .faq-hero__rule {
  display: block;
  width: 52px;
  height: 3px;
  background: var(--danxia);
  margin: clamp(14px, 2.2vw, 22px) 0;
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 6.4vw, 3.9rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-hero__lead {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  max-width: 66ch;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--space);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: clamp(18px, 2.4vw, 24px) 0 0;
  font-size: var(--fs-13);
  letter-spacing: 0.04em;
  color: var(--space);
  opacity: 0.78;
}

/* --- 主体两栏 --- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  padding-bottom: clamp(52px, 8vw, 104px);
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 76px);
  }
}

/* --- 左侧三步路径 --- */
.page-faq .faq-path {
  min-width: 0;
  padding-bottom: 8px;
  border-bottom: var(--faq-rule);
}

.page-faq .faq-path__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--danxia);
}

.page-faq .faq-path__eyebrow--sub {
  margin: 26px 0 10px;
  color: var(--space);
  opacity: 0.62;
  letter-spacing: 0.12em;
}

.page-faq .faq-path__list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-faq .faq-path__list::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: var(--sand);
}

.page-faq .faq-path__item {
  position: relative;
}

.page-faq .faq-path__link {
  display: grid;
  grid-template-columns: 31px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding: 9px 0;
  text-decoration: none;
  color: var(--space);
  font-size: var(--fs-15);
  line-height: 1.45;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-path__num {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 31px;
  height: 31px;
  border: 1px solid var(--danxia);
  background: var(--sandstone);
  color: var(--danxia);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-path__link:hover,
.page-faq .faq-path__link:focus-visible {
  color: var(--danxia);
}

.page-faq .faq-path__link:hover .faq-path__num,
.page-faq .faq-path__link:focus-visible .faq-path__num {
  background: var(--danxia);
  color: var(--sandstone);
}

.page-faq .faq-path__more {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-path__more a {
  display: inline-block;
  padding: 4px 0;
  color: var(--space);
  text-decoration: none;
  font-size: var(--fs-13);
  line-height: 1.6;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

@media (min-width: 900px) {
  .page-faq .faq-path {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    padding-bottom: 0;
    border-bottom: 0;
  }
}

/* --- 分组 --- */
.page-faq .faq-groups {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  border: var(--edge);
  background: var(--sandstone);
  box-shadow: var(--shadow-paper);
  padding: var(--faq-pad);
  scroll-margin-top: calc(var(--header-h) + 22px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 6px;
  margin-bottom: 6px;
}

.page-faq .faq-group__num {
  grid-row: 1 / span 2;
  padding-top: 9px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--danxia);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 3.4vw, 1.95rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-group__sub {
  margin: 0;
  max-width: 56ch;
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--space);
  opacity: 0.78;
}

/* --- 图文 --- */
.page-faq .faq-figure {
  margin: clamp(14px, 2.4vw, 22px) 0 clamp(16px, 2.6vw, 26px);
  max-width: 640px;
}

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

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--space);
  opacity: 0.78;
}

/* --- 条目手风琴 --- */
.page-faq .faq-item {
  border-top: var(--faq-rule);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 20px;
  align-items: start;
  gap: 14px;
  padding: 17px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1rem, 2.1vw, 1.15rem);
  line-height: 1.5;
  color: var(--ink);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--danxia);
}

.page-faq .faq-item__mark {
  position: relative;
  display: block;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border: 1px solid var(--danxia);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--danxia);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 4px;
  right: 4px;
  top: 9px;
  height: 1px;
}

.page-faq .faq-item__mark::after {
  top: 4px;
  bottom: 4px;
  left: 9px;
  width: 1px;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: scaleY(0);
}

.page-faq .faq-item__a {
  padding: 0 clamp(0px, 4vw, 46px) 22px 0;
  max-width: 68ch;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--space);
}

.page-faq .faq-item__a p {
  margin: 0 0 12px;
}

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

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

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  color: var(--danxia-deep);
}

/* --- 最后一组：深色收束 --- */
.page-faq .faq-group--contact {
  background: var(--space);
  border-color: var(--ink);
  color: var(--sandstone);
}

.page-faq .faq-group--contact .faq-group__num {
  color: var(--sand);
}

.page-faq .faq-group--contact .faq-group__title {
  color: var(--sandstone);
}

.page-faq .faq-group--contact .faq-group__sub {
  color: var(--sandstone);
  opacity: 0.8;
}

.page-faq .faq-checklist {
  list-style: none;
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--space-lift);
  border: 1px solid var(--space-lift);
}

.page-faq .faq-checklist li {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 12px;
  margin: 0;
  padding: 12px 14px;
  background: var(--space);
  font-size: var(--fs-15);
  line-height: 1.65;
  color: var(--sandstone);
}

.page-faq .faq-checklist__k {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-faq .faq-contact-note {
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  max-width: 66ch;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--sandstone);
}

.page-faq .faq-group--contact .faq-link {
  color: var(--cyan);
  text-decoration-color: var(--cyan-dark);
}

.page-faq .faq-group--contact .faq-link:hover,
.page-faq .faq-group--contact .faq-link:focus-visible {
  color: var(--sandstone);
  text-decoration-color: var(--sand);
}

.page-faq .faq-contact-actions {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* --- 窄屏收束 --- */
@media (max-width: 599px) {
  .page-faq .faq-hero__title {
    max-width: none;
  }

  .page-faq .faq-hero__lead,
  .page-faq .faq-item__a,
  .page-faq .faq-contact-note {
    font-size: 1rem;
    line-height: 1.8;
  }

  .page-faq .faq-group {
    box-shadow: 4px 4px 0 var(--sandstone-deep);
  }

  .page-faq .faq-checklist li {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }

  .page-faq .faq-checklist__k {
    padding-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-path__link,
  .page-faq .faq-path__num,
  .page-faq .faq-path__more a,
  .page-faq .faq-item__q,
  .page-faq .faq-link {
    transition: none;
  }
}