/* ===== 帮助中心 · page-faq ===== */

.page-faq {
  --faq-rail: 2.5rem;
  --faq-gutter: .75rem;
  --faq-read: 44rem;
  display: block;
  overflow-x: clip;
}

@media (min-width: 760px) {
  .page-faq {
    --faq-rail: 4.5rem;
    --faq-gutter: 1.5rem;
  }
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(1.75rem, 4vw, 3rem) clamp(1.5rem, 3.5vw, 2.5rem);
  border-bottom: 1px solid var(--line-faint);
  background:
    radial-gradient(110% 82% at 4% -12%, rgba(184, 255, 60, .11), transparent 58%),
    radial-gradient(78% 68% at 102% 6%, rgba(255, 179, 71, .09), transparent 62%);
}

.page-faq .faq-crumb {
  margin-bottom: 1.25rem;
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--slate);
}

.page-faq .faq-crumb a {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-crumb a:hover,
.page-faq .faq-crumb a:focus-visible {
  color: var(--lime);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 1.75rem;
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 17rem);
    gap: 3rem;
    align-items: end;
  }
}

.page-faq .faq-hero__title {
  margin-top: .7rem;
  max-width: 22ch;
  font-size: clamp(1.75rem, 4.6vw, 3.05rem);
  letter-spacing: -.015em;
  line-height: 1.12;
}

.page-faq .faq-hero__lead {
  margin-top: 1rem;
  max-width: 42rem;
  color: var(--mist);
}

.page-faq .faq-hero__board {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--line-faint);
  overflow: hidden;
}

.page-faq .faq-hero__cell {
  padding: .85rem 1rem;
  background: var(--layer);
}

.page-faq .faq-hero__cell dt {
  margin-bottom: .3rem;
  font-size: .6875rem;
  letter-spacing: .1em;
  color: var(--slate);
}

.page-faq .faq-hero__cell dd {
  margin: 0;
  color: var(--paper);
  font-size: 1rem;
  letter-spacing: .04em;
  line-height: 1.4;
}

.page-faq .faq-hero__cell dd span {
  margin-left: .2rem;
  font-size: .75rem;
  color: var(--lime);
}

.page-faq .faq-hero__figure-wrap {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--layer-deep);
  overflow: hidden;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

/* ---------- 主题分组胶囊 ---------- */

.page-faq .faq-jump {
  padding-block: clamp(1.35rem, 3vw, 2rem) 0;
}

.page-faq .faq-jump__row {
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  padding-bottom: .7rem;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-jump__row::-webkit-scrollbar {
  height: 4px;
}

.page-faq .faq-jump__row::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: var(--radius-pill);
}

@media (min-width: 900px) {
  .page-faq .faq-jump__row {
    flex-wrap: wrap;
    overflow: visible;
    padding-bottom: 0;
  }
}

.page-faq .faq-jump__pill {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--layer);
  color: var(--mist);
  font-size: .8125rem;
  letter-spacing: .05em;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-jump__pill .sl-mono {
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--amber);
}

.page-faq .faq-jump__pill:hover,
.page-faq .faq-jump__pill:focus-visible {
  border-color: var(--lime);
  color: var(--paper);
  transform: translateY(-2px);
}

.page-faq .faq-jump__pill:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* ---------- 分组 ---------- */

.page-faq .faq-group {
  border-top: 1px solid var(--line-faint);
}

.page-faq .faq-group.sl-section {
  padding-block: clamp(2rem, 4.6vw, 3.1rem);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: var(--faq-rail) minmax(0, 1fr);
  gap: 0 var(--faq-gutter);
  margin-bottom: 1.5rem;
}

.page-faq .faq-group__num {
  padding-top: .95rem;
  font-size: .75rem;
  letter-spacing: .16em;
  color: var(--lime);
}

.page-faq .faq-group__intro {
  margin-top: .5rem;
  max-width: 38rem;
  color: var(--slate);
  font-size: .9375rem;
  line-height: 1.75;
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-item {
  border-bottom: 1px solid var(--line-faint);
}

.page-faq .faq-group__list > .faq-item:first-child {
  border-top: 1px solid var(--line-faint);
}

.page-faq .faq-item__heading {
  margin: 0;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.65;
}

.page-faq .faq-item__btn {
  display: grid;
  grid-template-columns: var(--faq-rail) minmax(0, 1fr) 1.7rem;
  gap: 0 var(--faq-gutter);
  align-items: start;
  width: 100%;
  padding: 1.05rem 0;
  border: 0;
  background: transparent;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  text-align: left;
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item__btn:hover {
  color: var(--lime);
}

.page-faq .faq-item__btn:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.page-faq .faq-item__idx {
  padding-top: .32rem;
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--slate);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item__btn[aria-expanded="true"] .faq-item__idx {
  color: var(--lime);
}

.page-faq .faq-item__sign {
  position: relative;
  justify-self: end;
  width: 1.7rem;
  height: 1.7rem;
  margin-top: .06rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: .55rem;
  height: 1px;
  background: var(--mist);
  transform: translate(-50%, -50%);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-item__sign::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .faq-item__btn[aria-expanded="true"] .faq-item__sign {
  border-color: var(--lime);
  background: rgba(184, 255, 60, .13);
}

.page-faq .faq-item__btn[aria-expanded="true"] .faq-item__sign::before {
  background: var(--lime);
}

.page-faq .faq-item__btn[aria-expanded="true"] .faq-item__sign::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(0deg);
}

.page-faq .faq-item .sl-fold__wrap {
  position: relative;
}

.page-faq .faq-item .sl-fold__wrap::before {
  content: "";
  position: absolute;
  left: calc(var(--faq-rail) / 2 - 1px);
  top: .15rem;
  bottom: .55rem;
  width: 2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, var(--lime), rgba(184, 255, 60, 0));
  opacity: .45;
}

.page-faq .faq-item__body {
  max-width: calc(var(--faq-read) + var(--faq-rail) + var(--faq-gutter));
  padding: 0 0 1.3rem calc(var(--faq-rail) + var(--faq-gutter));
}

.page-faq .faq-item__body p {
  margin: 0;
  color: var(--mist);
  font-size: .9375rem;
  line-height: 1.85;
}

.page-faq .faq-key {
  color: var(--paper);
  font-weight: 600;
  padding: 0 .12em;
  background: linear-gradient(180deg, transparent 62%, rgba(184, 255, 60, .3) 62%);
}

.page-faq .faq-link {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(184, 255, 60, .45);
  transition: border-color var(--dur) var(--ease);
}

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

.page-faq .faq-link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* ---------- 同步示意图 ---------- */

.page-faq .faq-sync__figure {
  margin: 0 0 1.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--layer-deep);
  overflow: hidden;
}

.page-faq .faq-sync__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-faq .faq-sync__figure {
    margin-left: calc(var(--faq-rail) + var(--faq-gutter));
  }
}

/* ---------- 人工帮助 ---------- */

.page-faq .faq-group--help {
  border-top: 1px solid var(--line);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 1rem;
  margin-left: calc(var(--faq-rail) + var(--faq-gutter));
}

@media (min-width: 760px) {
  .page-faq .faq-help__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .faq-help__cell {
  padding: 1.15rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--layer);
}

.page-faq .faq-help__label {
  margin: 0 0 .55rem;
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--amber);
}

.page-faq .faq-help__value {
  margin: 0;
  color: var(--paper);
  font-size: 1rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.page-faq .faq-help__value.sl-mono {
  font-size: .9375rem;
  letter-spacing: .04em;
}

.page-faq .faq-help__hint {
  margin: .55rem 0 0;
  color: var(--slate);
  font-size: .8125rem;
  line-height: 1.7;
}

.page-faq .faq-prep {
  margin: 1.5rem 0 0 calc(var(--faq-rail) + var(--faq-gutter));
  padding: 1.2rem 1.3rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background:
    linear-gradient(135deg, rgba(184, 255, 60, .08), transparent 62%),
    var(--layer-deep);
}

.page-faq .faq-prep__title {
  margin: 0 0 .85rem;
  color: var(--paper);
  font-size: .9375rem;
  letter-spacing: .04em;
}

.page-faq .faq-prep__list {
  display: grid;
  gap: .55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-prep__list li {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: .6rem;
  align-items: baseline;
  color: var(--mist);
  font-size: .9375rem;
  line-height: 1.7;
}

.page-faq .faq-prep__k {
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--amber);
}

.page-faq .faq-help__more {
  margin: 1.5rem 0 0 calc(var(--faq-rail) + var(--faq-gutter));
  color: var(--slate);
  font-size: .875rem;
  line-height: 1.8;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__pill,
  .page-faq .faq-item__btn,
  .page-faq .faq-item__sign,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after {
    transition-duration: 1ms;
  }

  .page-faq .faq-jump__pill:hover {
    transform: none;
  }
}