.page-faq {
  --faq-line: 2px solid var(--line);
  --faq-card-bg: linear-gradient(158deg, var(--panel) 0%, var(--panel-deep) 100%);
  background: var(--ink);
  color: var(--text);
  overflow-x: clip;
}

.page-faq [id] {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

/* ---------- 顶部上下文 ---------- */
.page-faq .faq-topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 20px;
  padding: 20px 0 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-topbar__stamp {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* ---------- 章节通用 ---------- */
.page-faq .section {
  padding: 60px 0;
}

.page-faq .section-title {
  margin: 10px 0 0;
  font-size: clamp(1.6rem, 4.2vw, 2.5rem);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--white-soft);
}

.page-faq .lede {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: 50px;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(2.1rem, 7vw, 3.9rem);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--white-soft);
}

.page-faq .faq-hero__hl {
  color: var(--gold-hi);
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-decoration-thickness: 3px;
  text-underline-offset: 9px;
}

.page-faq .faq-hero__lede {
  margin: 24px 0 0;
  max-width: 36em;
  font-size: 16.5px;
  line-height: 1.85;
}

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

.page-faq .faq-hero__frame {
  position: relative;
  margin: 0;
  border: var(--faq-line);
  background: var(--panel-deep);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-faq .faq-hero__frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
  filter: saturate(0.65) contrast(1.12) brightness(0.9);
}

.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(140deg, rgba(59, 255, 158, 0.14), transparent 45%),
    linear-gradient(320deg, rgba(52, 200, 255, 0.12), transparent 52%);
}

.page-faq .faq-hero__cap {
  position: relative;
  z-index: 1;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  background: var(--panel);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 数据条 ---------- */
.page-faq .faq-strip {
  margin-top: 46px;
  border-top: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
  background: var(--panel-deep);
}

.page-faq .faq-strip__inner {
  display: grid;
  gap: 18px;
  padding: 22px 0;
}

.page-faq .faq-strip__live {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--mono);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--neon);
}

.page-faq .faq-strip__cells {
  display: grid;
  gap: 14px;
  margin: 0;
}

.page-faq .faq-strip__cell {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-left: 12px;
  border-left: 2px solid var(--gold);
}

.page-faq .faq-strip__cell dt {
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-strip__cell dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--gold-hi);
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-cats {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-cat {
  display: grid;
  border: var(--faq-line);
  background: var(--faq-card-bg);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-within {
  border-color: var(--gold);
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-cat__link {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 20px;
  color: inherit;
  text-decoration: none;
}

.page-faq .faq-cat__link:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

.page-faq .faq-cat__num {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .faq-cat__title {
  font-size: 19px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--white-soft);
}

.page-faq .faq-cat__desc {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-cat__go {
  margin-top: 4px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--blue);
}

/* ---------- 问答 ---------- */
.page-faq .faq-groups {
  margin-top: 36px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-group {
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-faq .faq-group__num {
  flex: none;
  padding: 1px 6px;
  border: 1px solid var(--neon);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--neon);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  color: var(--white-soft);
}

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

.page-faq .qa + .qa {
  border-top: 1px solid var(--line);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.65;
  color: var(--white-soft);
  transition: color 0.16s var(--ease);
}

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

.page-faq .qa__q:hover {
  color: var(--gold-hi);
}

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

.page-faq .qa__label {
  flex: none;
  margin-top: 4px;
  padding: 0 5px;
  border: 1px solid var(--line);
  background: var(--panel-deep);
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1.5;
}

.page-faq .qa__text {
  flex: 1 1 auto;
}

.page-faq .qa__mark {
  flex: none;
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 6px;
}

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

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

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

.page-faq .qa[open] .qa__mark::before {
  background: var(--neon);
}

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

.page-faq .qa__a {
  padding: 0 2px 22px 34px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text);
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 38em;
}

.page-faq .qa__a p + p {
  margin-top: 10px;
}

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

/* ---------- 排查步骤 ---------- */
.page-faq .faq-trouble {
  border-top: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
  background:
    linear-gradient(180deg, rgba(14, 42, 34, 0.55) 0%, rgba(10, 12, 16, 0) 72%),
    var(--ink);
}

.page-faq .faq-trouble__grid {
  display: grid;
  gap: 36px;
  margin-top: 36px;
}

.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .step {
  position: relative;
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 18px;
  padding-bottom: 30px;
}

.page-faq .step:last-child {
  padding-bottom: 0;
}

.page-faq .step::before {
  content: "";
  position: absolute;
  left: 26px;
  top: 58px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--line) 0%, rgba(35, 42, 51, 0) 100%);
}

.page-faq .step:last-child::before {
  display: none;
}

.page-faq .step__num {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border: var(--faq-line);
  background: var(--panel-deep);
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--neon);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .step:hover .step__num {
  border-color: var(--neon);
  color: var(--white-soft);
}

.page-faq .step__title {
  margin: 13px 0 0;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--white-soft);
}

.page-faq .step__body p {
  margin: 9px 0 0;
  max-width: 38em;
  font-size: 15.5px;
  line-height: 1.85;
}

.page-faq .faq-trouble__figure {
  margin: 0 0 22px;
  border: var(--faq-line);
  background: var(--panel-deep);
  overflow: hidden;
}

.page-faq .faq-trouble__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.55) contrast(1.1) brightness(0.85);
}

.page-faq .faq-status {
  width: 100%;
  border-collapse: collapse;
  border: var(--faq-line);
  background: var(--panel-deep);
  font-size: 14px;
}

.page-faq .faq-status caption {
  caption-side: top;
  padding: 0 0 10px;
  text-align: left;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .faq-status th,
.page-faq .faq-status td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  line-height: 1.7;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-status thead th {
  background: var(--panel);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .faq-status tbody th {
  width: 96px;
  font-weight: 600;
}

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

/* ---------- 提醒排查 ---------- */
.page-faq .faq-notify {
  border-bottom: 2px solid var(--line);
}

.page-faq .causes {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .cause {
  padding: 20px;
  border: var(--faq-line);
  border-top: 4px solid var(--gold);
  background: var(--panel);
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .cause:hover {
  border-color: var(--gold);
  border-top-width: 4px;
  box-shadow: var(--shadow-hard);
}

.page-faq .cause__tag {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-faq .cause__why {
  margin: 10px 0 0;
  font-size: 17.5px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--white-soft);
}

.page-faq .cause__fix {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-notify__tail {
  margin: 28px 0 0;
  padding: 16px 18px;
  border-left: 3px solid var(--blue);
  background: rgba(52, 200, 255, 0.06);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-help {
  padding-bottom: 96px;
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-help__intro p {
  margin: 16px 0 0;
  max-width: 38em;
  font-size: 15.5px;
  line-height: 1.85;
}

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

.page-faq .faq-contact {
  margin: 0;
  border: var(--faq-line);
  background: var(--faq-card-bg);
}

.page-faq .faq-contact__row {
  display: grid;
  gap: 5px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-contact__row dt {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .faq-contact__row dd {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--white-soft);
  overflow-wrap: anywhere;
}

.page-faq .faq-help__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

/* ---------- 动效 ---------- */
.page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-faq [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .page-faq .faq-cat,
  .page-faq .cause,
  .page-faq .step__num {
    transition: none;
  }
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-strip__cells {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(12, 1fr);
    gap: 16px;
  }
  .page-faq .faq-cat--a { grid-column: span 5; }
  .page-faq .faq-cat--b { grid-column: span 4; }
  .page-faq .faq-cat--c { grid-column: span 3; }
  .page-faq .faq-cat--d { grid-column: span 7; }
  .page-faq .faq-cat--e { grid-column: span 5; }
}

@media (min-width: 900px) {
  .page-faq .section {
    padding: 92px 0;
  }
  .page-faq .faq-hero {
    padding-top: 66px;
  }
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: center;
  }
  .page-faq .faq-group {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 44px;
    padding: 34px 0;
  }
  .page-faq .faq-group__body {
    margin-top: 0;
  }
  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 56px;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-strip__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 40px;
  }
  .page-faq .faq-strip__cells {
    gap: 24px;
  }
  .page-faq .faq-trouble__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }
  .page-faq .faq-trouble__aside {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
  .page-faq .causes {
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
  }
  .page-faq .cause:nth-child(1) { grid-column: span 5; }
  .page-faq .cause:nth-child(2) { grid-column: span 4; }
  .page-faq .cause:nth-child(3) { grid-column: span 3; }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 64px;
  }
}