/* ===== 帮助中心 /help-center/ ===== */
.page-faq {
  background: var(--night);
  color: var(--paper);
  padding-block: clamp(1.25rem, 0.7rem + 2.4vw, 2.75rem) clamp(2.5rem, 1.5rem + 5vw, 5rem);
}

.page-faq .breadcrumb {
  margin-bottom: clamp(1rem, 0.6rem + 1.6vw, 2rem);
}

/* --- 首屏 --- */
.page-faq .faq-hero {
  display: grid;
  gap: var(--gap);
  align-items: end;
}

.page-faq .faq-hero__lede {
  display: grid;
  gap: 0.9rem;
  align-content: start;
}

.page-faq .faq-hero__lede h1 {
  margin: 0;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__intro {
  margin: 0;
  max-width: 38em;
  color: var(--paper);
  line-height: 1.75;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.4rem;
}

.page-faq .faq-hero__board {
  background: var(--stand);
  border: var(--rule) solid var(--stroke);
  box-shadow: var(--hard);
  padding: clamp(0.9rem, 0.65rem + 1.2vw, 1.5rem);
  display: grid;
  gap: 0.9rem;
  align-content: start;
}

/* --- 七格周期条 --- */
.page-faq .cycle {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 4px;
}

.page-faq .cycle__cell {
  display: grid;
  place-items: center;
  gap: 2px;
  padding: 0.4rem 0.15rem;
  min-height: 62px;
  border: 1px solid var(--stroke);
  background: var(--edge);
  color: var(--mist);
  text-align: center;
}

.page-faq .cycle__cell--on {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--edge);
}

.page-faq .cycle__cell--end {
  border-color: var(--amber);
  color: var(--amber);
  box-shadow: inset 0 0 0 1px var(--amber);
}

.page-faq .cycle__day {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9375rem;
  line-height: 1;
}

.page-faq .cycle__tag {
  font-size: 10px;
  letter-spacing: 0.08em;
}

.page-faq .cycle__legend {
  margin: 0;
  color: var(--mist);
  font-size: 0.8125rem;
  line-height: 1.7;
}

/* --- 双轨舞台：索引 + 问答 --- */
.page-faq .faq-stage {
  margin-top: clamp(2rem, 1.2rem + 3vw, 4rem);
  display: grid;
  gap: var(--gap);
  align-items: start;
}

.page-faq .faq-index {
  background: var(--edge);
  border: var(--rule) solid var(--stroke);
  padding: 1rem;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.2rem;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.6rem;
  align-items: baseline;
  padding: 0.55rem 0.5rem;
  border-left: 3px solid transparent;
  color: var(--mist);
  text-decoration: none;
  font-weight: 600;
  transition: color 120ms ease, border-color 120ms ease, background-color 120ms ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--paper);
  border-left-color: var(--lime);
  background: rgba(200, 255, 61, 0.07);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--lime);
}

.page-faq .faq-index__note {
  margin: 1rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--stroke);
  color: var(--mist);
  font-size: 0.8125rem;
  line-height: 1.7;
}

/* --- 问答分组面板 --- */
.page-faq .faq-groups {
  display: grid;
  gap: var(--gap);
}

.page-faq .faq-group {
  background: var(--stand);
  border: var(--rule) solid var(--stroke);
  box-shadow: var(--hard);
  padding: clamp(1rem, 0.7rem + 1.4vw, 1.75rem);
  scroll-margin-top: 7rem;
}

.page-faq .faq-group--support {
  border-color: var(--amber);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  align-items: start;
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--lime);
  padding-top: 0.2rem;
}

.page-faq .faq-group--support .faq-group__no {
  color: var(--amber);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.3rem, 1.05rem + 1vw, 1.75rem);
  letter-spacing: -0.01em;
}

.page-faq .faq-group__desc {
  margin: 0.4rem 0 0;
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-faq .faq-group__foot {
  margin: 1.25rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--stroke);
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.75;
}

.page-faq .faq-subhead {
  margin: 1.5rem 0 0;
  font-size: 1.0625rem;
  letter-spacing: 0.01em;
  color: var(--paper);
}

/* --- 媒体占位 --- */
.page-faq .media {
  position: relative;
  margin: 1.25rem 0 0;
  background: var(--edge);
  border: var(--rule) solid var(--stroke);
  box-shadow: var(--hard-sm);
  overflow: hidden;
}

.page-faq .media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .media__caption {
  display: block;
  padding: 0.6rem 0.75rem;
  background: var(--edge);
  border-top: 1px solid var(--stroke);
  color: var(--mist);
  font-size: 0.8125rem;
  line-height: 1.6;
}

/* --- 手风琴问答 --- */
.page-faq .accordion {
  margin-top: 1.25rem;
  border-top: 1px solid var(--stroke);
}

.page-faq .accordion__item {
  border-bottom: 1px solid var(--stroke);
}

.page-faq .accordion__h {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .accordion__trigger {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.85rem;
  align-items: start;
  padding: 0.95rem 0.45rem 0.95rem 0.7rem;
  border: 0;
  border-left: 3px solid transparent;
  background: none;
  color: var(--paper);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease;
}

.page-faq .accordion__trigger:hover {
  background: rgba(200, 255, 61, 0.05);
}

.page-faq .accordion__trigger[aria-expanded="true"] {
  border-left-color: var(--lime);
  background: rgba(200, 255, 61, 0.08);
}

.page-faq .accordion__no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--mist);
  padding-top: 0.25rem;
}

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

.page-faq .accordion__q {
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.6;
  letter-spacing: 0.01em;
  transition: color 120ms ease;
}

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

.page-faq .accordion__sign {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 0.3rem;
  border: 2px solid var(--stroke);
  flex: none;
}

.page-faq .accordion__sign::before,
.page-faq .accordion__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--lime);
  transform: translate(-50%, -50%);
}

.page-faq .accordion__sign::before {
  width: 10px;
  height: 2px;
}

.page-faq .accordion__sign::after {
  width: 2px;
  height: 10px;
  transition: transform 120ms ease;
}

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

.page-faq .accordion__trigger[aria-expanded="true"] .accordion__sign::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .accordion__panel {
  padding: 0.1rem 0.45rem 1.1rem;
  color: var(--mist);
  font-size: 0.9375rem;
}

.page-faq .accordion__panel p {
  margin: 0 0 0.6rem;
  max-width: 46em;
  line-height: 1.75;
}

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

.page-faq .accordion__panel a {
  color: var(--lime);
}

/* --- 分组内的左右分栏 --- */
.page-faq .faq-split {
  display: grid;
  gap: var(--gap);
  align-items: start;
  margin-top: 1.25rem;
}

.page-faq .faq-split .media {
  margin-top: 0;
}

.page-faq .faq-split .accordion {
  margin-top: 0;
}

/* --- 短表格 --- */
.page-faq .faq-table__wrap {
  margin-top: 1.25rem;
  border: var(--rule) solid var(--stroke);
  overflow-x: auto;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 0.7rem 0.85rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--stroke);
}

.page-faq .faq-table thead th {
  background: var(--edge);
  color: var(--mist);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
}

.page-faq .faq-table tbody th {
  color: var(--paper);
  font-weight: 700;
  white-space: nowrap;
}

.page-faq .faq-table tbody td {
  color: var(--mist);
}

.page-faq .faq-table tbody tr:hover {
  background: rgba(200, 255, 61, 0.06);
}

.page-faq .faq-table tbody tr:last-child th,
.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

/* --- 截图步骤 --- */
.page-faq .step-list {
  list-style: none;
  margin: 0.9rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-faq .step-list__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.75rem;
  padding: 0.8rem 0.9rem;
  background: var(--edge);
  border: 1px solid var(--stroke);
}

.page-faq .step-list__item--now {
  border-color: var(--lime);
  box-shadow: var(--hard-sm);
}

.page-faq .step-list__no {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--lime);
  line-height: 1.6;
}

.page-faq .step-list__item strong {
  display: block;
  color: var(--paper);
  font-size: 0.9375rem;
}

.page-faq .step-list__item p {
  margin: 0.25rem 0 0;
  color: var(--mist);
  font-size: 0.875rem;
  line-height: 1.7;
}

/* --- 客服卡片 --- */
.page-faq .support-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.25rem;
}

.page-faq .support-card {
  display: grid;
  gap: 0.4rem;
  align-content: start;
  padding: 1rem;
  background: var(--edge);
  border: 1px solid var(--stroke);
}

.page-faq .support-card__key {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .support-card__val {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  color: var(--lime);
  word-break: break-all;
}

.page-faq .support-card__val--text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--paper);
  word-break: normal;
}

.page-faq .support-card__note {
  margin: 0;
  color: var(--mist);
  font-size: 0.8125rem;
  line-height: 1.7;
}

.page-faq .faq-note {
  margin: 1.25rem 0 0;
  padding: 0.85rem 1rem;
  background: rgba(242, 179, 46, 0.09);
  border-left: 3px solid var(--amber);
  color: var(--paper);
  font-size: 0.9375rem;
  line-height: 1.75;
}

/* --- 断点 --- */
@media (min-width: 640px) {
  .page-faq .accordion__panel {
    padding: 0.1rem 0.45rem 1.15rem 2.7rem;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-faq .support-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-faq .faq-stage {
    grid-template-columns: 250px minmax(0, 1fr);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 6rem;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-stage {
    grid-template-columns: 272px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .page-faq .faq-hero__lede {
    animation: faq-rise 240ms ease-out both;
  }

  .page-faq .faq-hero__board {
    animation: faq-rise 240ms ease-out 60ms both;
  }
}

@keyframes faq-rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__lede,
  .page-faq .faq-hero__board {
    animation: none;
  }
}