.page-faq {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: var(--border);
  background:
    linear-gradient(113deg, rgba(0, 229, 255, 0.10) 0 11%, transparent 11% 100%),
    linear-gradient(292deg, rgba(255, 45, 141, 0.07) 0 7%, transparent 7% 100%),
    var(--ink);
}

.page-faq .faq-hero__inner {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(1.5rem, 5vw, 3rem) var(--gutter) clamp(2.25rem, 6vw, 4rem);
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-faq .faq-hero__eyebrow {
  margin: 1.25rem 0 0.85rem;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 8vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 1.15rem 0 0;
  max-width: 46ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-hero__actions {
  margin-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.page-faq .faq-hero__panel {
  position: relative;
  padding: 1.25rem 1.15rem 1rem;
  border: var(--border);
  background: var(--panel);
  box-shadow: var(--hard-shadow);
}

.page-faq .faq-hero__panel::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
}

.page-faq .faq-panel__head {
  position: relative;
  margin: 0 0 0.9rem;
  padding-bottom: 0.7rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--cyan);
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-panel__rows {
  position: relative;
  display: grid;
  gap: 0.55rem;
}

.page-faq .faq-panel__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px dashed rgba(22, 52, 92, 0.9);
}

.page-faq .faq-panel__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-panel__key {
  font-size: 0.85rem;
  color: var(--muted);
}

.page-faq .faq-panel__val {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--paper);
  text-align: right;
}

.page-faq .faq-panel__val.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--cyan-soft);
}

.page-faq .faq-panel__foot {
  position: relative;
  margin: 1.1rem 0 0;
  padding-top: 0.8rem;
  border-top: 1px solid var(--grid);
  font-size: 0.82rem;
}

.page-faq .faq-panel__foot-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

/* ============ 主体两栏 ============ */
.page-faq .faq-body {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 3.25rem) var(--gutter) clamp(3rem, 7vw, 5rem);
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.75rem);
}

.page-faq .faq-index {
  padding: 1rem 1.1rem 1.1rem;
  border: var(--border);
  background: var(--panel);
}

.page-faq .faq-index__title {
  margin: 0 0 0.85rem;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.15rem;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  padding: 0.5rem 0.35rem 0.5rem 0.7rem;
  border-left: 2px solid transparent;
  color: var(--paper);
  font-size: 0.95rem;
  text-decoration: none;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(0, 229, 255, 0.06);
}

.page-faq .faq-index__num {
  font-size: 0.75rem;
  color: var(--gold);
  letter-spacing: 0.06em;
}

.page-faq .faq-index__foot {
  margin: 1rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--grid);
  font-size: 0.8rem;
  color: var(--muted);
}

.page-faq .faq-index__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed var(--cyan);
}

/* ============ 章节 ============ */
.page-faq .faq-content {
  min-width: 0;
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
}

.page-faq .faq-block {
  min-width: 0;
  padding-top: clamp(1.5rem, 3vw, 2rem);
  border-top: 1px solid var(--grid);
}

.page-faq .faq-block:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
}

.page-faq .faq-block__index {
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 4.5vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--gold);
  line-height: 1;
}

.page-faq .faq-block__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 4vw, 1.9rem);
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-block__lead {
  margin: 0.85rem 0 0;
  max-width: 62ch;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-block a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.45);
}

.page-faq .faq-block a:hover,
.page-faq .faq-block a:focus-visible {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan-soft);
}

/* ============ 配置表 ============ */
.page-faq .faq-table-wrap {
  margin-top: 1.5rem;
  overflow-x: auto;
  border: var(--border);
  background: var(--panel);
  box-shadow: var(--hard-shadow);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.page-faq .faq-table__caption {
  padding: 0.85rem 0.9rem;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--gold);
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-table thead th {
  padding: 0.7rem 0.9rem;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--cyan);
  border-bottom: 1px solid var(--cyan);
  white-space: nowrap;
}

.page-faq .faq-table tbody th {
  padding: 0.85rem 0.9rem;
  text-align: left;
  font-weight: 600;
  color: var(--paper);
  border-bottom: 1px solid var(--grid);
  white-space: nowrap;
}

.page-faq .faq-table tbody td {
  padding: 0.85rem 0.9rem;
  color: var(--muted);
  line-height: 1.7;
  border-bottom: 1px solid var(--grid);
  font-variant-numeric: tabular-nums;
}

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

.page-faq .faq-table tbody td b {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--cyan-soft);
  letter-spacing: 0.04em;
}

.page-faq .faq-copy-row {
  margin-top: 1.1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.page-faq .faq-copy-row__hint {
  font-size: 0.8rem;
  color: var(--muted);
}

.page-faq .faq-figure {
  margin: 1.6rem 0 0;
}

/* ============ 手风琴 ============ */
.page-faq .faq-acc {
  margin-top: 1.5rem;
  display: grid;
  gap: 0.7rem;
}

.page-faq .faq-acc--tight {
  margin-top: 1.4rem;
}

.page-faq .faq-item {
  border: var(--border);
  background: var(--panel);
  transition: box-shadow 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--cyan);
  box-shadow: 4px 4px 0 rgba(4, 10, 20, 0.72);
}

.page-faq .faq-item[open] {
  border-color: var(--cyan);
}

.page-faq .faq-item > summary {
  position: relative;
  display: block;
  padding: 0.95rem 2.9rem 0.95rem 3.3rem;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item > summary::before {
  content: attr(data-num);
  position: absolute;
  left: 0.95rem;
  top: 1.02rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-item[open] > summary::before {
  color: var(--gold);
}

.page-faq .faq-item > summary::after {
  content: "+";
  position: absolute;
  right: 1rem;
  top: 0.8rem;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1.4;
  color: var(--cyan);
}

.page-faq .faq-item[open] > summary::after {
  content: "\2212";
  color: var(--magenta);
}

.page-faq .faq-item[open] > summary {
  color: var(--cyan-soft);
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-answer {
  padding: 1rem 1.2rem 1.25rem 3.3rem;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.04) 1px, transparent 1px);
  background-size: 26px 26px;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 0.9rem;
  padding: 0;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 2rem;
  margin-bottom: 0.45rem;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--paper);
}

.page-faq .faq-steps li:last-child {
  margin-bottom: 0;
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.16rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .faq-why {
  margin: 0;
  padding-left: 0.85rem;
  border-left: 2px solid var(--magenta);
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-why b {
  color: var(--paper);
  font-weight: 600;
}

/* ============ 换设备时间轴 ============ */
.page-faq .faq-timeline {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: 1.1rem;
}

.page-faq .faq-timeline li {
  position: relative;
  padding-left: 3rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--paper);
}

.page-faq .faq-timeline li::before {
  content: "";
  position: absolute;
  left: 1.05rem;
  top: 1.9rem;
  bottom: -1.1rem;
  width: 2px;
  background: linear-gradient(180deg, var(--grid), transparent);
}

.page-faq .faq-timeline li:last-child::before {
  display: none;
}

.page-faq .faq-timeline__num {
  position: absolute;
  left: 0;
  top: 0.1rem;
  width: 2.1rem;
  padding: 0.1rem 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
  background: var(--deep);
  border: 1px solid var(--grid);
}

/* ============ 地区卡片 ============ */
.page-faq .faq-split {
  margin-top: 1.6rem;
  display: grid;
  gap: 1rem;
}

.page-faq .faq-card {
  padding: 1.1rem 1.15rem 1.25rem;
  border: var(--border);
  background: var(--panel);
  box-shadow: var(--hard-shadow);
}

.page-faq .faq-card--wide {
  margin-top: 1.6rem;
}

.page-faq .faq-card__title {
  margin: 0 0 0.85rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--grid);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--cyan);
}

.page-faq .faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-faq .faq-list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62rem;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-faq .faq-list--check li::before {
  background: var(--gold);
}

.page-faq .faq-card__foot {
  margin: 1rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px dashed var(--grid);
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-card__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.45);
}

.page-faq .faq-note {
  margin: 1.1rem 0 0;
  padding-left: 0.9rem;
  border-left: 2px solid var(--gold);
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ============ 后续跳转 ============ */
.page-faq .faq-next {
  display: grid;
  gap: 0.75rem;
  padding-top: clamp(1.5rem, 3vw, 2rem);
  border-top: 1px solid var(--grid);
}

.page-faq .faq-next__link {
  display: grid;
  gap: 0.3rem;
  padding: 0.95rem 1.05rem;
  border: var(--border);
  background: var(--panel);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-faq .faq-next__link:hover,
.page-faq .faq-next__link:focus-visible {
  transform: translate(-2px, -2px);
  border-color: var(--cyan);
  box-shadow: 4px 4px 0 rgba(4, 10, 20, 0.72);
}

.page-faq .faq-next__label {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-faq .faq-next__desc {
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--muted);
  line-height: 1.65;
}

/* ============ 断点 ============ */
@media (min-width: 720px) {
  .page-faq .faq-split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.15rem;
  }

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

  .page-faq .faq-item > summary {
    padding-right: 3rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-faq .faq-hero__panel {
    margin-top: 3.2rem;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
    align-self: start;
  }
}

@media (max-width: 519px) {
  .page-faq .faq-item > summary {
    padding: 0.9rem 2.6rem 0.9rem 3rem;
    font-size: 0.92rem;
  }

  .page-faq .faq-answer {
    padding: 0.9rem 1rem 1.1rem 1.1rem;
  }

  .page-faq .faq-timeline li {
    padding-left: 2.6rem;
    font-size: 0.9rem;
  }
}

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

  .page-faq .faq-next__link:hover,
  .page-faq .faq-next__link:focus-visible {
    transform: none;
  }
}