.page-faq {
  --faq-line: rgba(42, 58, 114, .85);
  --faq-panel: linear-gradient(160deg, rgba(19, 28, 66, .96), rgba(11, 18, 48, .92));
  padding-bottom: 8px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 30px 0 6px;
  overflow: hidden;
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: -12%;
  right: -12%;
  top: -160px;
  height: 470px;
  background:
    radial-gradient(46% 62% at 16% 24%, rgba(53, 232, 224, .20), transparent 72%),
    radial-gradient(50% 68% at 88% 4%, rgba(164, 107, 255, .22), transparent 74%);
  pointer-events: none;
}
.page-faq .faq-hero > .wrap {
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero__head {
  max-width: 900px;
}
.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(27px, 6.2vw, 50px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--text);
  margin: 16px 0 0;
  text-shadow: 0 0 1px rgba(53, 232, 224, .9), 0 0 30px rgba(53, 232, 224, .28);
}
.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--soft);
}

/* 版本状态条 */
.page-faq .faq-status {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 26px;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
  border-radius: var(--r-card);
  overflow: hidden;
}
.page-faq .faq-status__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--faq-panel);
}
.page-faq .faq-status__num {
  font-size: 22px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: .02em;
}
.page-faq .faq-status__label {
  font-size: 12.5px;
  color: var(--soft);
  letter-spacing: .06em;
}

/* 章节索引 */
.page-faq .faq-index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
  position: sticky;
  top: calc(var(--topbar-h) + 6px);
  z-index: 4;
  padding: 8px 0;
}
.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 15px;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-pill);
  background: rgba(11, 18, 48, .82);
  backdrop-filter: blur(6px);
  color: var(--soft);
  font-size: 13.5px;
  text-decoration: none;
  transition: color .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}
.page-faq .faq-index__link:hover {
  color: var(--text);
  border-color: rgba(53, 232, 224, .5);
}
.page-faq .faq-index__link[aria-current="true"] {
  color: var(--text);
  border-color: rgba(53, 232, 224, .62);
  background: rgba(53, 232, 224, .10);
}
.page-faq .faq-index__num {
  font-size: 11.5px;
  color: var(--violet);
  letter-spacing: .08em;
}

/* ---------- 区块标题 ---------- */
.page-faq .faq-block {
  padding-top: 42px;
}
.page-faq .faq-block__head {
  max-width: 760px;
  margin-bottom: 24px;
}
.page-faq .faq-block__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(21px, 3.4vw, 31px);
  line-height: 1.4;
  color: var(--text);
  margin: 14px 0 0;
}
.page-faq .faq-block__lead {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--soft);
}

/* ---------- 版本卡 ---------- */
.page-faq .faq-version__card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px;
}
.page-faq .faq-version__value .metric__value {
  display: block;
  font-size: 26px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: .02em;
}
.page-faq .faq-version__value .metric__label {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--soft);
}
.page-faq .faq-version__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--soft);
}
.page-faq .faq-version__text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 232, 224, .4);
}
.page-faq .faq-version__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.page-faq .faq-version__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--soft);
}
.page-faq .faq-version__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 10px rgba(164, 107, 255, .8);
}

/* ---------- 五类目录 ---------- */
.page-faq .faq-catalog {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding-bottom: 6px;
}
.page-faq .faq-catalog__figure {
  margin: 0;
}
.page-faq .faq-catalog__card {
  --cat: var(--cyan);
  position: relative;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 2px solid var(--cat);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.page-faq .faq-catalog__card:nth-child(2) { --cat: var(--cyan); }
.page-faq .faq-catalog__card:nth-child(3) { --cat: var(--violet); }
.page-faq .faq-catalog__card:nth-child(4) { --cat: var(--gold); }
.page-faq .faq-catalog__card:nth-child(5) { --cat: #35E8E0; }
.page-faq .faq-catalog__card:nth-child(6) { --cat: #A46BFF; }
.page-faq .faq-catalog__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 48px -32px rgba(53, 232, 224, .7);
}
.page-faq .faq-catalog__num {
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--cat);
}
.page-faq .faq-catalog__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}
.page-faq .faq-catalog__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--soft);
}
.page-faq .faq-catalog__link {
  margin-top: auto;
  font-size: 13.5px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 232, 224, .35);
  align-self: flex-start;
  min-height: 32px;
  display: inline-flex;
  align-items: center;
}
.page-faq .faq-catalog__link:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 换机重登步骤 ---------- */
.page-faq .faq-migrate__figure {
  margin: 0 0 26px;
}
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}
.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 14px;
  bottom: 18px;
  width: 2px;
  background: linear-gradient(180deg, rgba(53, 232, 224, .75), rgba(164, 107, 255, .6) 62%, rgba(164, 107, 255, 0));
}
.page-faq .faq-step {
  position: relative;
  margin-left: 34px;
  margin-bottom: 10px;
}
.page-faq .faq-step__num {
  position: absolute;
  left: -34px;
  top: 13px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--night);
  border: 1px solid rgba(53, 232, 224, .55);
  color: var(--cyan);
  font-size: 11.5px;
  box-shadow: 0 0 14px -4px rgba(53, 232, 224, .8);
}
.page-faq .faq-step__box {
  border: 1px solid var(--faq-line);
  border-radius: var(--r-card);
  background: var(--faq-panel);
  overflow: hidden;
  transition: border-color .3s var(--ease);
}
.page-faq .faq-step__box[open] {
  border-color: rgba(53, 232, 224, .42);
}
.page-faq .faq-step__head {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  padding: 12px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--text);
  font-size: 15px;
  font-weight: 700;
}
.page-faq .faq-step__head::-webkit-details-marker { display: none; }
.page-faq .faq-step__head::marker { content: ""; }
.page-faq .faq-step__name {
  flex: 1;
}
.page-faq .faq-step__caret {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1px solid rgba(53, 232, 224, .5);
  transition: transform .3s var(--ease);
}
.page-faq .faq-step__caret::before,
.page-faq .faq-step__caret::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--cyan);
  transform: translate(-50%, -50%);
}
.page-faq .faq-step__caret::before { width: 8px; height: 1.5px; }
.page-faq .faq-step__caret::after { width: 1.5px; height: 8px; transition: opacity .3s var(--ease); }
.page-faq .faq-step__box[open] .faq-step__caret { transform: rotate(180deg); }
.page-faq .faq-step__box[open] .faq-step__caret::after { opacity: 0; }
.page-faq .faq-step__body {
  padding: 0 16px 16px;
  border-top: 1px solid rgba(42, 58, 114, .6);
  padding-top: 14px;
}
.page-faq .faq-step__meta {
  margin: 0;
  display: grid;
  gap: 10px;
}
.page-faq .faq-step__meta div {
  display: grid;
  gap: 4px;
}
.page-faq .faq-step__meta dt {
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--cyan);
}
.page-faq .faq-step__meta dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--soft);
}

/* ---------- 异常速查 ---------- */
.page-faq .faq-triage {
  display: grid;
  gap: 10px;
}
.page-faq .faq-triage__row {
  display: grid;
  gap: 10px;
  padding: 16px 18px;
  border: 1px solid var(--faq-line);
  border-left: 3px solid rgba(164, 107, 255, .7);
  border-radius: var(--r-sm);
  background: linear-gradient(120deg, rgba(19, 28, 66, .9), rgba(11, 18, 48, .92));
  transition: border-color .3s var(--ease), transform .3s var(--ease), background .3s var(--ease);
}
.page-faq .faq-triage__row:hover {
  border-color: rgba(53, 232, 224, .55);
  border-left-color: var(--cyan);
  transform: translateX(4px);
  background: linear-gradient(120deg, rgba(28, 42, 92, .95), rgba(11, 18, 48, .95));
}
.page-faq .faq-triage__case {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}
.page-faq .faq-triage__path {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-faq .faq-triage__path li {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text);
  padding: 6px 12px;
  border-radius: var(--r-pill);
  background: rgba(28, 42, 92, .75);
  border: 1px solid rgba(42, 58, 114, .9);
}
.page-faq .faq-triage__path li:not(:last-child)::after {
  content: "→";
  margin-left: 9px;
  color: var(--cyan);
  opacity: .85;
}
.page-faq .faq-triage__result {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--gold);
}

/* ---------- 提问模板 ---------- */
.page-faq .faq-ask {
  display: grid;
  gap: 16px;
}
.page-faq .faq-ask__panel {
  padding: 20px;
  border-radius: var(--r-card);
}
.page-faq .faq-ask__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-faq .faq-ask__list li {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(42, 58, 114, .75);
}
.page-faq .faq-ask__list li:last-child { border-bottom: none; }
.page-faq .faq-ask__key {
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--cyan);
  padding-top: 2px;
}
.page-faq .faq-ask__val {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--soft);
}
.page-faq .faq-ask__side {
  padding: 20px;
  border-radius: var(--r-card);
  border-color: rgba(164, 107, 255, .3);
}
.page-faq .faq-ask__side-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}
.page-faq .faq-ask__side-text {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--soft);
  word-break: break-word;
}
.page-faq .faq-ask__side-text:last-child { margin-bottom: 0; }
.page-faq .faq-ask__side-text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 232, 224, .4);
}

/* ---------- 相关入口 ---------- */
.page-faq .faq-next {
  padding-top: 42px;
}
.page-faq .faq-next__grid {
  margin-top: 22px;
}
.page-faq .faq-next__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  text-decoration: none;
  transition: transform .35s var(--ease), border-color .35s var(--ease);
}
.page-faq .faq-next__card:hover {
  transform: translateY(-4px);
  border-color: rgba(53, 232, 224, .5);
}
.page-faq .faq-next__tag {
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--violet);
}
.page-faq .faq-next__name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}
.page-faq .faq-next__desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero { padding-top: 40px; }
  .page-faq .faq-status { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-faq .faq-catalog { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-faq .faq-catalog__figure { grid-column: span 2; }
  .page-faq .faq-step__head { font-size: 15.5px; padding: 14px 20px; }
  .page-faq .faq-step__body { padding: 14px 20px 18px; }
  .page-faq .faq-step__meta div { grid-template-columns: 92px 1fr; gap: 14px; align-items: start; }
  .page-faq .faq-step__meta dt { padding-top: 3px; }
}

@media (min-width: 900px) {
  .page-faq .faq-ask { grid-template-columns: 1.55fr 1fr; align-items: start; }
  .page-faq .faq-triage__row {
    grid-template-columns: 170px minmax(0, 1fr) 250px;
    align-items: center;
    gap: 18px;
    padding: 18px 22px;
  }
  .page-faq .faq-steps::before { left: 15px; }
  .page-faq .faq-step { margin-left: 42px; }
  .page-faq .faq-step__num {
    left: -42px;
    width: 32px;
    height: 32px;
    font-size: 12.5px;
    top: 14px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-catalog {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    padding-bottom: 30px;
  }
  .page-faq .faq-catalog__figure { grid-column: span 1; }
  .page-faq .faq-catalog > *:nth-child(even) { transform: translateY(24px); }
  .page-faq .faq-catalog__card:hover { transform: translateY(18px); }
  .page-faq .faq-block { padding-top: 56px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-catalog__card,
  .page-faq .faq-triage__row,
  .page-faq .faq-next__card,
  .page-faq .faq-step__caret {
    transition: none;
  }
  .page-faq .faq-catalog > *:nth-child(even) { transform: none; }
}