.page-faq {
  display: block;
  padding-bottom: 3rem;
}

.page-faq .eyebrow {
  color: var(--azure);
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  display: grid;
  gap: 2rem;
  padding: 1.25rem 0 2.5rem;
}

.page-faq .faq-hero__lead {
  position: relative;
  padding-left: 1.1rem;
  border-left: 2px solid rgba(56, 189, 248, 0.5);
}

.page-faq .faq-hero__lead .display {
  margin: 0.6rem 0 1rem;
}

.page-faq .faq-hero__lead .lede {
  max-width: 46ch;
}

.page-faq .faq-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.page-faq .faq-stat {
  padding: 1rem 1.05rem;
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(16, 26, 43, 0.92), rgba(5, 7, 10, 0.92));
}

.page-faq .faq-stat__num {
  display: block;
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--azure);
  line-height: 1.1;
}

.page-faq .faq-stat:nth-child(2) .faq-stat__num {
  color: var(--lime);
}

.page-faq .faq-stat:nth-child(3) .faq-stat__num {
  color: var(--cyan);
}

.page-faq .faq-stat:nth-child(4) .faq-stat__num {
  color: var(--gold);
  font-size: 1.2rem;
}

.page-faq .faq-stat__label {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.76rem;
  line-height: 1.5;
  color: var(--silver);
}

/* ============ 筛选条 ============ */
.page-faq .faq-filters {
  margin: 1.25rem 0 1.5rem;
}

.page-faq .faq-filters .filter {
  min-height: 40px;
}

/* ============ 设备对照卡 ============ */
.page-faq .faq-device-grid {
  gap: 1rem;
}

.page-faq .faq-device {
  border-left: 2px solid rgba(56, 189, 248, 0.55);
  border-radius: var(--radius-l);
}

.page-faq .faq-device .card__tag {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--azure);
}

.page-faq .faq-device[data-tags="compact"] {
  border-left-color: rgba(163, 230, 53, 0.6);
}

.page-faq .faq-device[data-tags="compact"] .card__tag {
  color: var(--lime);
}

.page-faq .faq-device[data-tags="medium"] {
  border-left-color: rgba(34, 211, 238, 0.6);
}

.page-faq .faq-device[data-tags="medium"] .card__tag {
  color: var(--cyan);
}

.page-faq .faq-device[data-tags="large"] {
  border-left-color: rgba(245, 158, 11, 0.6);
}

.page-faq .faq-device[data-tags="large"] .card__tag {
  color: var(--gold);
}

.page-faq .faq-device .card__meta {
  font-size: 0.78rem;
  color: var(--silver);
}

/* ============ 图片 ============ */
.page-faq .faq-media {
  margin: 1.75rem 0 0;
}

.page-faq .faq-media .media__img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-l);
  object-fit: cover;
}

.page-faq .faq-media .media__caption {
  margin-top: 0.7rem;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--silver);
}

/* ============ 对照表 ============ */
.page-faq .faq-table {
  margin-top: 1.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-table__row {
  display: grid;
  grid-template-columns: 6.5rem 7rem minmax(12rem, 1.6fr) 8.5rem;
  align-items: center;
  gap: 0.75rem;
  min-width: 560px;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: rgba(16, 26, 43, 0.55);
}

.page-faq .faq-table__row + .faq-table__row {
  margin-top: 0.5rem;
}

.page-faq .faq-table__row--head {
  background: transparent;
  border-color: transparent;
  padding-bottom: 0.35rem;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--silver);
}

.page-faq .faq-table__size {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--azure);
}

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

.page-faq .faq-table__tier {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--lime);
}

/* ============ 系统档位 ============ */
.page-faq .faq-tier-grid {
  gap: 1rem;
  margin-top: 1.75rem;
}

.page-faq .faq-tier {
  border-radius: var(--radius-l);
  background: linear-gradient(150deg, rgba(16, 26, 43, 0.9), rgba(5, 7, 10, 0.9));
}

.page-faq .faq-tier__head {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  margin-bottom: 0.55rem;
}

.page-faq .faq-tier__code {
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--azure);
}

.page-faq .faq-tier__name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
}

.page-faq .faq-tier .meter {
  margin-top: 0.85rem;
}

.page-faq .faq-tier:nth-child(1) .meter__fill {
  background: var(--azure);
}

.page-faq .faq-tier:nth-child(2) .meter__fill {
  background: var(--cyan);
}

.page-faq .faq-tier:nth-child(3) .meter__fill {
  background: var(--gold);
}

.page-faq .faq-tier:nth-child(4) .meter__fill {
  background: var(--silver);
}

.page-faq .faq-tier .meter__fill {
  height: 100%;
  border-radius: var(--pill);
}

/* ============ 工具操作 ============ */
.page-faq .faq-tools .split {
  gap: 2rem;
  align-items: start;
}

.page-faq .faq-tools__desc {
  margin-top: 0.9rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  position: relative;
  padding: 0.9rem 1rem 0.9rem 3.1rem;
  border-radius: var(--radius-m);
  border: 1px solid rgba(163, 230, 53, 0.24);
  background: rgba(163, 230, 53, 0.06);
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--white);
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 1rem;
  top: 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--lime);
}

.page-faq .faq-tools__pills {
  margin-top: 1.25rem;
}

.page-faq .faq-media--tool {
  margin-top: 0;
}

/* ============ 快捷收藏 ============ */
.page-faq .faq-fav .grid {
  gap: 1rem;
  margin-top: 1.5rem;
}

.page-faq .faq-fav-card {
  border-radius: var(--radius-l);
  border: 1px solid rgba(34, 211, 238, 0.22);
}

.page-faq .faq-fav__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.7rem;
  height: 2.7rem;
  padding: 0 0.6rem;
  margin-bottom: 0.9rem;
  border-radius: 14px;
  border: 1px solid rgba(34, 211, 238, 0.35);
  background: radial-gradient(circle at 30% 25%, rgba(34, 211, 238, 0.28), rgba(16, 26, 43, 0.9));
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--cyan);
}

/* ============ 版本记录 ============ */
.page-faq .faq-version .split {
  gap: 2rem;
  align-items: start;
}

.page-faq .faq-version__desc {
  margin-top: 0.9rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-faq .faq-version__stamp {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 1.1rem;
  margin-top: 1.4rem;
  padding: 1rem 1.15rem;
  border-radius: var(--radius-l);
  border: 1px solid var(--line-strong);
  background: linear-gradient(135deg, rgba(16, 26, 43, 0.95), rgba(5, 7, 10, 0.9));
}

.page-faq .faq-version__stamp .mono {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--magenta);
}

.page-faq .faq-version__stamp small {
  font-size: 0.76rem;
  color: var(--silver);
}

.page-faq .faq-version__links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1.35rem;
}

.page-faq .faq-version__links .card__link {
  font-size: 0.86rem;
}

.page-faq .faq-version__timeline {
  margin-top: 0.5rem;
}

.page-faq .faq-version__tag {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--azure);
}

.page-faq .faq-version__note {
  margin-top: 0.35rem;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--silver);
}

/* ============ 问答 ============ */
.page-faq .faq-qa__list {
  margin-top: 1.25rem;
}

.page-faq .faq-q {
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background: rgba(16, 26, 43, 0.5);
  overflow: hidden;
}

.page-faq .faq-q + .faq-q {
  margin-top: 0.6rem;
}

.page-faq .faq-q .fold__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--white);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q .fold__summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--azure);
}

.page-faq .faq-q[open] .fold__summary::after {
  content: "–";
  color: var(--lime);
}

.page-faq .faq-q[open] .fold__summary {
  color: var(--azure);
}

.page-faq .faq-q .fold__body {
  padding: 0 1.15rem 1.15rem;
  border-top: 1px solid var(--line);
}

.page-faq .faq-q .fold__body p {
  margin: 0.9rem 0 0;
  font-size: 0.87rem;
  line-height: 1.8;
  color: var(--silver);
}

/* ============ 故障排查 ============ */
.page-faq .faq-fix__steps {
  list-style: none;
  counter-reset: faqfix;
  display: grid;
  gap: 0.75rem;
  margin: 1.5rem 0 0;
  padding: 0;
}

.page-faq .faq-fix__steps li {
  padding: 1rem 1.1rem;
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
  background: rgba(11, 14, 19, 0.72);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--silver);
}

.page-faq .faq-fix__steps li strong {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
  color: var(--white);
}

.page-faq .faq-fix__steps li:nth-child(1) strong {
  color: var(--azure);
}

.page-faq .faq-fix__steps li:nth-child(2) strong {
  color: var(--cyan);
}

.page-faq .faq-fix__steps li:nth-child(3) strong {
  color: var(--gold);
}

.page-faq .faq-fix__steps li:nth-child(4) strong {
  color: var(--lime);
}

/* ============ 联系支持 ============ */
.page-faq .faq-support__card {
  padding: 1.6rem 1.3rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(120% 120% at 0% 0%, rgba(34, 211, 238, 0.16), transparent 55%),
    radial-gradient(120% 120% at 100% 100%, rgba(163, 230, 53, 0.12), transparent 55%),
    linear-gradient(160deg, rgba(16, 26, 43, 0.95), rgba(5, 7, 10, 0.96));
}

.page-faq .faq-support__desc {
  margin-top: 0.9rem;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--silver);
  max-width: 56ch;
}

.page-faq .faq-support__grid {
  display: grid;
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.page-faq .faq-support__item {
  padding: 0.9rem 1rem;
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
  background: rgba(5, 7, 10, 0.55);
}

.page-faq .faq-support__label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--silver);
  margin-bottom: 0.35rem;
}

.page-faq .faq-support__value {
  font-size: 0.88rem;
  color: var(--white);
  word-break: break-word;
}

.page-faq a.faq-support__value {
  color: var(--cyan);
  text-decoration: none;
}

.page-faq a.faq-support__value:hover {
  text-decoration: underline;
}

.page-faq .faq-support__note {
  margin-top: 1.1rem;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--silver);
}

/* ============ 焦点反馈 ============ */
.page-faq a:focus-visible,
.page-faq button:focus-visible,
.page-faq summary:focus-visible,
.page-faq .faq-table:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: var(--radius-s);
}

/* ============ 中等屏幕 ============ */
@media (min-width: 640px) {
  .page-faq .faq-support__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-support__item:last-child {
    grid-column: 1 / -1;
  }

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

  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ============ 平板与桌面 ============ */
@media (min-width: 900px) {
  .page-faq {
    padding-bottom: 4.5rem;
  }

  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: 3rem;
    align-items: start;
    padding: 2rem 0 4rem;
  }

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

  .page-faq .faq-tools .split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 2.5rem;
  }

  .page-faq .faq-version .split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2.5rem;
  }

  .page-faq .faq-support__card {
    padding: 2.5rem 2.25rem;
  }

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

  .page-faq .faq-support__item:last-child {
    grid-column: auto;
  }

  .page-faq .faq-fix__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-media {
    margin-top: 2.25rem;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero {
    padding-top: 2.5rem;
  }

  .page-faq .faq-table__row {
    padding: 0.95rem 1.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}