.page-faq {
  --fq-cut: 40px;
  --fq-indent: 24px;
  --fq-text: #b9cbd8;
  background:
    radial-gradient(1100px 520px at 82% -8%, rgba(55, 242, 220, 0.06), transparent 68%),
    var(--deep);
  color: var(--ice);
  font-family: var(--font-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.page-faq p {
  margin: 0 0 12px;
}

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

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-top: 20px;
  padding-bottom: 4px;
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-faq .breadcrumb a {
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .breadcrumb a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .breadcrumb__sep {
  color: var(--line);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-top: 8px;
  padding: 26px 0 76px;
  background:
    radial-gradient(760px 360px at 90% 4%, rgba(55, 242, 220, 0.1), transparent 66%),
    linear-gradient(168deg, var(--deep-2) 0%, var(--deep) 58%, var(--ink) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--fq-cut)), 0 100%);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 30px;
}

.page-faq .kicker {
  font-family: var(--font-mono);
  font-style: italic;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel);
  margin: 0;
}

.page-faq .faq-hero__title {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 7vw, 4.2rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ice);
  max-width: 20ch;
}

.page-faq .faq-hero__lede {
  max-width: 46ch;
  font-size: 1rem;
  color: var(--fq-text);
  margin: 0;
}

.page-faq .faq-hero__anchor {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__big {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(3.2rem, 13vw, 5.4rem);
  line-height: 0.82;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__anchor-text {
  font-size: 0.84rem;
  line-height: 1.45;
  color: var(--steel);
}

.page-faq .faq-hero__figure {
  margin: 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, var(--deep-2), var(--ink));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), 0 100%);
}

.page-faq .faq-hero__figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-style: italic;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--steel);
}

/* ---------- 热门问题 ---------- */
.page-faq .faq-hot {
  margin-top: 42px;
}

.page-faq .faq-hot__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-hot__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-hot__item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--deep-2);
  color: var(--ice);
  text-decoration: none;
  transition: background 0.18s ease, transform 0.18s ease;
}

.page-faq .faq-hot__item:hover {
  background: var(--slate);
  transform: translateY(-2px);
}

.page-faq .faq-hot__item:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-hot__no {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--steel);
  transition: color 0.18s ease;
}

.page-faq .faq-hot__item:hover .faq-hot__no {
  color: var(--cyan);
}

.page-faq .faq-hot__q {
  flex: 1;
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.5;
}

.page-faq .faq-hot__go {
  font-family: var(--font-mono);
  color: var(--amber);
}

/* ---------- 筛选 ---------- */
.page-faq .faq-manual {
  padding: 58px 0 30px;
}

.page-faq .faq-manual__head {
  margin-bottom: 20px;
}

.page-faq .faq-manual__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 4.6vw, 2.2rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--ice);
  max-width: 26ch;
}

.page-faq .faq-filter__bar {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 6px 0 22px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-filter__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  padding: 0;
  border: 0;
  opacity: 0;
  pointer-events: none;
  clip-path: inset(50%);
}

.page-faq .faq-filter__label {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  padding: 7px 14px;
  border: 1px solid var(--line);
  color: var(--steel);
  cursor: pointer;
  user-select: none;
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.page-faq .faq-filter__label:hover {
  color: var(--ice);
  border-color: var(--cyan);
}

.page-faq .faq-filter__radio:checked + .faq-filter__label {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 700;
}

.page-faq .faq-filter__radio:focus-visible + .faq-filter__label {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-filter:has(#ft-version:checked) .faq-topic:not([data-topic="version"]),
.page-faq .faq-filter:has(#ft-result:checked) .faq-topic:not([data-topic="result"]),
.page-faq .faq-filter:has(#ft-column:checked) .faq-topic:not([data-topic="column"]),
.page-faq .faq-filter:has(#ft-data:checked) .faq-topic:not([data-topic="data"]) {
  display: none;
}

/* ---------- 问题列表 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 40px;
  padding-top: 34px;
}

.page-faq .faq-topic__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-topic__idx {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .faq-topic__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.1rem, 3.6vw, 1.55rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ice);
}

.page-faq .faq-topic__body {
  display: grid;
  gap: 26px;
  padding-top: 4px;
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  transition: background 0.18s ease, padding-left 0.18s ease;
}

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

.page-faq .faq-item__q:hover {
  background: rgba(55, 242, 220, 0.045);
  padding-left: 10px;
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__no {
  flex: 0 0 auto;
  min-width: 2.2em;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--steel);
}

.page-faq .faq-item__t {
  flex: 1;
  margin: 0;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.55;
  color: var(--ice);
  transition: color 0.18s ease;
}

.page-faq .faq-item__q:hover .faq-item__t {
  color: var(--cyan);
}

.page-faq .faq-item__mark {
  flex: 0 0 auto;
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 6px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--amber);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__a {
  margin: 0 0 20px;
  padding-left: var(--fq-indent);
  border-left: 1px solid var(--line);
  font-size: 0.94rem;
  color: var(--fq-text);
}

.page-faq .faq-item__a p {
  max-width: 68ch;
}

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 242, 220, 0.42);
  transition: border-color 0.18s ease;
}

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

.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  align-items: start;
}

.page-faq .faq-steps__n {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--cyan);
  border-left: 2px solid var(--cyan);
  padding-left: 7px;
}

.page-faq .faq-item__tail {
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-style: italic;
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  color: var(--steel);
}

.page-faq .faq-v {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.86em;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--mint);
  border-bottom: 1px solid rgba(125, 232, 180, 0.4);
}

.page-faq .faq-shot {
  margin: 0;
  max-width: 320px;
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--deep-2), var(--ink));
}

.page-faq .faq-shot figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-style: italic;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--steel);
}

/* ---------- 页尾联系 ---------- */
.page-faq .faq-tail {
  margin-top: 56px;
  padding: 50px 0 66px;
  background:
    radial-gradient(700px 320px at 12% 0%, rgba(255, 162, 58, 0.07), transparent 70%),
    var(--ink);
  clip-path: polygon(0 28px, 100% 0, 100% 100%, 0 100%);
}

.page-faq .faq-tail__grid {
  display: grid;
  gap: 34px;
}

.page-faq .faq-tail__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.25rem, 4.2vw, 1.9rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ice);
}

.page-faq .faq-tail__col p {
  max-width: 46ch;
  color: var(--fq-text);
  font-size: 0.94rem;
}

.page-faq .faq-tail__col p a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 242, 220, 0.42);
}

.page-faq .faq-tail__col p a:hover {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-tail__sub {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-channel {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-channel li {
  padding-left: 14px;
  border-left: 2px solid var(--amber);
}

.page-faq .faq-channel strong {
  display: block;
  margin-bottom: 4px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ice);
}

.page-faq .faq-channel span {
  display: block;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--steel);
  word-break: break-word;
}

.page-faq .faq-tail__note {
  font-family: var(--font-mono);
  font-style: italic;
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--steel);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 34px 0 92px;
  }

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

  .page-faq .faq-hot__item {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    padding: 18px 18px 20px;
  }

  .page-faq .faq-hot__q {
    flex: none;
  }
}

@media (min-width: 900px) {
  .page-faq {
    --fq-cut: 52px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-hero__figure {
    margin-top: 34px;
  }

  .page-faq .faq-topic__body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 40px;
  }

  .page-faq .faq-shot {
    margin-top: 16px;
  }

  .page-faq .faq-tail__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 60px;
  }

  .page-faq .faq-list {
    gap: 52px;
  }
}

@media (min-width: 1140px) {
  .page-faq .faq-item__t {
    font-size: 1.06rem;
  }

  .page-faq .faq-item__a {
    font-size: 0.97rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hot__item,
  .page-faq .faq-item__q,
  .page-faq .faq-item__t,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-filter__label {
    transition: none;
  }

  .page-faq .faq-hot__item:hover {
    transform: none;
  }
}