.page-faq {
  --faq-panel: #0B2540;
  --faq-soft: rgba(35, 230, 208, .08);
  --faq-line-soft: rgba(35, 230, 208, .12);
}

/* ---------- 页面首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 5vw, 44px) 0 clamp(26px, 4vw, 44px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  width: min(48%, 420px);
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--lava) 55%, var(--cyan));
  transform: skewX(-18deg);
  transform-origin: right center;
  pointer-events: none;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  max-width: 22ch;
  font-family: var(--sans);
  font-weight: 800;
  font-size: clamp(28px, 7vw, 54px);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--cloud);
}

.page-faq .faq-hero__title em {
  font-style: normal;
  color: var(--lava);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 64ch;
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 分类索引条 ---------- */
.page-faq .faq-index {
  margin-top: clamp(22px, 4vw, 34px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-faq .faq-index__item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 18px;
  background: var(--faq-panel);
  border: 1px solid var(--line);
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
  color: var(--cloud);
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-index__item::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-faq .faq-index__item--lava::before { background: var(--lava); }
.page-faq .faq-index__item--cyan::before { background: var(--cyan); }
.page-faq .faq-index__item--gold::before { background: var(--gold); }
.page-faq .faq-index__item--mist::before { background: var(--mist); }

.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  border-color: var(--line-strong);
  background: linear-gradient(180deg, var(--faq-soft), var(--faq-panel));
  transform: translateY(-2px);
}

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

.page-faq .faq-index__count {
  margin-left: auto;
  flex: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

/* ---------- 三步走步骤卡 ---------- */
.page-faq .faq-steps {
  margin-top: clamp(24px, 4vw, 38px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-faq .faq-step {
  position: relative;
  padding: 26px 22px 24px;
  background: linear-gradient(160deg, var(--faq-panel) 0%, var(--ink-950) 100%);
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 42px;
  height: 3px;
  background: linear-gradient(90deg, var(--lava), transparent);
}

.page-faq .faq-step__num {
  display: block;
  font-family: var(--mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--lava);
}

.page-faq .faq-step__title {
  margin: 14px 0 0;
  font-size: clamp(18px, 2.2vw, 21px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--cloud);
}

.page-faq .faq-step__text {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-step__text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-step__text a:hover {
  color: var(--lava-soft);
  border-bottom-color: var(--lava-soft);
}

.page-faq .faq-step__ok {
  margin: 18px 0 0;
  padding: 10px 12px;
  border-left: 2px solid var(--cyan);
  background: var(--faq-soft);
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--cyan);
}

.page-faq .faq-steps__fig {
  margin-top: clamp(24px, 4vw, 36px);
}

/* ---------- 可展开问答 ---------- */
.page-faq .faq-list {
  margin-top: clamp(22px, 4vw, 34px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-item {
  background: var(--faq-panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--line-strong);
  background: linear-gradient(180deg, var(--faq-panel) 0%, var(--ink-900) 100%);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 17px 20px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.8vw, 17px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--cloud);
}

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

.page-faq .faq-item__mark {
  flex: none;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1;
  color: var(--cyan);
  border: 1px solid var(--line-strong);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__mark {
  background: var(--cyan);
  color: var(--ink-950);
  transform: rotate(45deg);
}

.page-faq .faq-item__a {
  margin: 0 20px 20px;
  padding: 2px 0 2px 16px;
  border-left: 2px solid var(--cyan);
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-item__a a:hover {
  color: var(--lava-soft);
  border-bottom-color: var(--lava-soft);
}

/* ---------- 报错对照表 ---------- */
.page-faq .faq-err__fig {
  margin-top: clamp(22px, 4vw, 32px);
}

.page-faq .faq-err {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--faq-panel);
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
}

.page-faq .faq-err__labels {
  display: none;
}

.page-faq .faq-err__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--faq-line-soft);
  transition: background var(--dur) var(--ease);
}

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

.page-faq .faq-err__row:hover {
  background: var(--faq-soft);
}

.page-faq .faq-err__code {
  margin: 0;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--lava-soft);
  word-break: break-word;
}

.page-faq .faq-err__fix {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--cloud);
}

.page-faq .faq-err__fix a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-err__fix a:hover {
  color: var(--lava-soft);
  border-bottom-color: var(--lava-soft);
}

/* ---------- 未解决引导 ---------- */
.page-faq .faq-ask {
  padding: clamp(26px, 5vw, 46px);
  background: linear-gradient(140deg, rgba(255, 106, 43, .16) 0%, rgba(11, 37, 64, .94) 46%, rgba(4, 18, 31, .96) 100%);
}

.page-faq .faq-ask__title {
  margin: 12px 0 0;
  max-width: 24ch;
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.25;
  color: var(--cloud);
}

.page-faq .faq-ask__lead {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-ask__needs {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-ask__needs li {
  padding: 15px 16px;
  background: rgba(4, 18, 31, .62);
  border: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-ask__needs b {
  display: block;
  margin-bottom: 6px;
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-faq .faq-ask__actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-ask__note {
  margin: 20px 0 0;
  max-width: 62ch;
  padding-left: 14px;
  border-left: 2px solid var(--line-strong);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-ask__needs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

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

@media (min-width: 980px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-err__labels {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 24px;
    padding: 13px 24px;
    background: var(--faq-soft);
    border-bottom: 1px solid var(--line);
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: .08em;
    color: var(--mist);
  }

  .page-faq .faq-err__row {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 24px;
    padding: 16px 24px;
  }
}

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

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

  .page-faq .faq-hero::after {
    transform: none;
  }
}