.page-faq {
  --faq-panel: #1E1840;
  --faq-panel-deep: #16333A;
  --faq-panel-open: #241C4C;
  --faq-dash: rgba(244, 239, 228, .14);
  --faq-soft: rgba(244, 239, 228, .74);
  padding-block: clamp(22px, 4vw, 46px) clamp(60px, 9vw, 112px);
  background:
    radial-gradient(900px 420px at 94% -6%, rgba(47, 123, 216, .18), transparent 68%),
    radial-gradient(720px 380px at 0% 44%, rgba(110, 139, 88, .12), transparent 72%),
    var(--ink-0);
  color: var(--bone);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  margin-top: clamp(18px, 3vw, 34px);
  padding: clamp(22px, 3.4vw, 42px) clamp(18px, 3vw, 42px) clamp(20px, 3vw, 34px);
  border: var(--line) solid var(--rock);
  border-left: 9px solid var(--gold);
  background: linear-gradient(158deg, var(--faq-panel) 0%, #171033 72%, #150F2E 100%);
  box-shadow: var(--shadow);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: var(--flag-h);
  opacity: .9;
}

.page-faq .faq-hero .eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--gold);
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 5.4vw, 58px);
  line-height: 1.08;
  letter-spacing: -.02em;
  max-width: 20ch;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 46em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.95;
  color: var(--faq-soft);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: clamp(14px, 2vw, 20px) 0 0;
  border-top: 1px solid var(--faq-dash);
  list-style: none;
  font-size: 14px;
  color: var(--faq-soft);
}

.page-faq .faq-hero__facts .mono {
  color: var(--gold);
  font-size: 15px;
}

/* ---------- 主布局 ---------- */

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
  margin-top: clamp(32px, 5vw, 60px);
}

/* ---------- 现象索引 ---------- */

.page-faq .faq-index {
  border: var(--line) solid var(--rock);
  background: var(--faq-panel);
  padding: 16px 16px 14px;
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__item {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.page-faq .faq-index__item:nth-child(5n + 1) { --idx: var(--flag-blue); }
.page-faq .faq-index__item:nth-child(5n + 2) { --idx: var(--bone); }
.page-faq .faq-index__item:nth-child(5n + 3) { --idx: var(--vermil); }
.page-faq .faq-index__item:nth-child(5n + 4) { --idx: var(--flag-green); }
.page-faq .faq-index__item:nth-child(5n + 5) { --idx: var(--gold); }

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 132px;
  padding: 10px 14px 10px 11px;
  border: 2px solid var(--rock);
  border-left: 5px solid var(--idx, var(--rock));
  background: rgba(0, 0, 0, .22);
  color: var(--bone);
  text-decoration: none;
  font-size: 14px;
  transition: background .2s ease, transform .2s ease, border-color .2s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: rgba(244, 239, 228, .08);
  border-color: var(--idx, var(--gold));
  transform: translateX(2px);
}

.page-faq .faq-index__num {
  font-size: 12px;
  color: var(--idx, var(--gold));
  letter-spacing: .04em;
}

.page-faq .faq-index__label {
  white-space: nowrap;
}

.page-faq .faq-index__hint {
  margin: 6px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(244, 239, 228, .55);
}

/* ---------- 章节 ---------- */

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

.page-faq .faq-group {
  padding-left: clamp(0px, 1.6vw, 18px);
  border-left: 3px solid transparent;
  margin-bottom: clamp(38px, 5.5vw, 68px);
  scroll-margin-top: 96px;
  transition: border-color .25s ease, background .25s ease;
}

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

.page-faq .faq-group:target {
  border-left-color: var(--gold);
  background: linear-gradient(90deg, rgba(233, 178, 60, .09), transparent 62%);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 3px solid var(--rock);
  margin-bottom: 16px;
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  font-size: clamp(18px, 2.4vw, 24px);
  color: var(--gold);
  letter-spacing: .02em;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 2.9vw, 32px);
  line-height: 1.28;
  letter-spacing: -.015em;
}

.page-faq .faq-group__lede {
  margin: 0 0 18px;
  max-width: 44em;
  font-size: 16px;
  line-height: 1.95;
  color: var(--faq-soft);
}

.page-faq .faq-group__lede a,
.page-faq .faq-steps__text a {
  color: var(--flag-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-group__lede + .faq-group__lede {
  margin-top: -6px;
}

/* ---------- 有序步骤 ---------- */

.page-faq .faq-steps {
  position: relative;
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(58, 58, 70, .9));
}

.page-faq .faq-steps__item {
  position: relative;
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--faq-dash);
}

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

.page-faq .faq-steps__idx {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 26px;
  border: 2px solid var(--rock);
  background: var(--ink-0);
  color: var(--gold);
  font-size: 12px;
  letter-spacing: .04em;
}

.page-faq .faq-steps__text {
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--faq-soft);
}

.page-faq .faq-steps__text strong {
  color: var(--bone);
  font-weight: 700;
}

/* ---------- 问答手风琴 ---------- */

.page-faq .faq-qa {
  border-left: 4px solid var(--rock);
  background: var(--faq-panel);
  margin-bottom: 12px;
  transition: border-color .22s ease, background .22s ease;
}

.page-faq .faq-qa[open] {
  border-left-color: var(--gold);
  background: var(--faq-panel-open);
}

.page-faq .faq-qa__q {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  line-height: 1.7;
  font-weight: 700;
  color: var(--bone);
}

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

.page-faq .faq-qa__q:hover {
  background: rgba(244, 239, 228, .05);
}

.page-faq .faq-qa__q-mark {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 24px;
  border: 2px solid var(--clay);
  color: var(--clay);
  font-size: 12px;
}

.page-faq .faq-qa__q-text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-qa__q-icon {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 2px solid var(--gold);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
}

.page-faq .faq-qa__q-icon::before {
  content: "+";
}

.page-faq .faq-qa[open] .faq-qa__q-icon::before {
  content: "−";
}

.page-faq .faq-qa__body {
  padding: 0 16px 16px 56px;
  font-size: 15px;
  line-height: 1.95;
  color: var(--faq-soft);
}

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

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

.page-faq .faq-qa__body a {
  color: var(--flag-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 图注容器 ---------- */

.page-faq .faq-figure {
  margin: clamp(20px, 3vw, 32px) 0 0;
}

.page-faq .faq-figure--narrow {
  max-width: 620px;
}

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

/* ---------- 提示条 ---------- */

.page-faq .faq-note {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  padding: 14px 18px;
  border: 3px solid var(--vermil);
  border-left-width: 8px;
  background: rgba(216, 69, 59, .1);
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--faq-soft);
}

.page-faq .faq-note--info {
  border-color: var(--flag-blue);
  background: rgba(47, 123, 216, .1);
}

/* ---------- 对照表 ---------- */

.page-faq .faq-table-wrap {
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  overflow-x: auto;
  border: var(--line) solid var(--rock);
  background: var(--faq-panel-deep);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-faq .faq-table__cap {
  padding: 12px 16px;
  text-align: left;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gold);
  border-bottom: 2px solid var(--rock);
}

.page-faq .faq-table thead th {
  padding: 11px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 400;
  letter-spacing: .08em;
  color: var(--bone);
  background: rgba(0, 0, 0, .28);
  border-bottom: 2px solid var(--rock);
}

.page-faq .faq-table tbody td {
  padding: 13px 16px;
  line-height: 1.85;
  border-bottom: 1px solid var(--faq-dash);
  color: var(--faq-soft);
  vertical-align: top;
}

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

.page-faq .faq-table tbody td:first-child {
  font-family: var(--font-mono);
  color: var(--clay);
  white-space: nowrap;
}

/* ---------- 补丁信息条目 ---------- */

.page-faq .faq-facts {
  margin: 0 0 clamp(20px, 3vw, 28px);
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .faq-facts__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 13px 16px;
  border: 2px solid var(--rock);
  border-left: 6px solid var(--moss);
  background: rgba(30, 24, 64, .72);
}

.page-faq .faq-facts__k {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--moss);
}

.page-faq .faq-facts__v {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--faq-soft);
}

.page-faq .faq-facts__v .mono {
  color: var(--bone);
}

/* ---------- 会员中心三块 ---------- */

.page-faq .faq-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0 0 clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-card {
  padding: 16px 18px;
  border: 2px solid var(--rock);
  border-top: 6px solid var(--rock);
  background: var(--faq-panel);
  transition: transform .2s ease, box-shadow .2s ease;
}

.page-faq .faq-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-card--blue { border-top-color: var(--flag-blue); }
.page-faq .faq-card--green { border-top-color: var(--flag-green); }
.page-faq .faq-card--clay { border-top-color: var(--clay); }

.page-faq .faq-card__k {
  margin: 0 0 8px;
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--bone);
}

.page-faq .faq-card--blue .faq-card__k { color: var(--flag-blue); }
.page-faq .faq-card--green .faq-card__k { color: var(--flag-green); }
.page-faq .faq-card--clay .faq-card__k { color: var(--clay); }

.page-faq .faq-card__d {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--faq-soft);
}

/* ---------- 联系渠道 ---------- */

.page-faq .faq-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-channel {
  padding: 16px 18px;
  border: var(--line) solid var(--rock);
  background: var(--faq-panel-deep);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-channel__k {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-faq .faq-channel__v {
  margin: 0 0 10px;
  font-size: clamp(16px, 2.2vw, 20px);
  color: var(--bone);
  word-break: break-all;
}

.page-faq .faq-channel__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--faq-soft);
}

.page-faq .faq-prepare {
  padding: 16px 18px;
  border: 2px solid var(--rock);
  border-left: 6px solid var(--gold);
  background: rgba(21, 15, 46, .7);
  margin-bottom: clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-prepare__title {
  margin: 0 0 10px;
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-faq .faq-prepare__list {
  margin: 0;
  padding-left: 18px;
  list-style: square;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--faq-soft);
}

.page-faq .faq-prepare__list li::marker {
  color: var(--gold);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-channels {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-faq .faq-facts__item {
    grid-template-columns: 108px 1fr;
    align-items: baseline;
    gap: 14px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(196px, 236px) minmax(0, 1fr);
    gap: clamp(34px, 4vw, 56px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 30px;
    align-self: start;
    padding: 20px 18px 16px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    overflow: visible;
    gap: 8px;
    padding-bottom: 0;
  }

  .page-faq .faq-index__item {
    flex: 0 0 auto;
  }

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

@media (min-width: 1200px) {
  .page-faq .faq-group__head {
    gap: 18px;
  }
}

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

  .page-faq .faq-card:hover,
  .page-faq .faq-index__link:hover {
    transform: none;
  }
}