.page-faq {
  --faq-line: rgba(143, 163, 184, 0.26);
  --faq-text: #DCE6F0;
  --faq-dim: #9FB2C6;
  --faq-snow-text: var(--mb-cobalt);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 30px 0 42px;
  overflow: hidden;
  border-bottom: 2px solid var(--mb-ink);
  background:
    radial-gradient(120% 90% at 88% 4%, rgba(34, 224, 190, 0.18) 0%, rgba(34, 224, 190, 0) 56%),
    radial-gradient(90% 70% at 4% 100%, rgba(124, 99, 255, 0.16) 0%, rgba(124, 99, 255, 0) 60%),
    linear-gradient(165deg, var(--mb-deep) 0%, var(--mb-cobalt) 100%);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(90deg,
    var(--mb-cyan) 0 20%,
    var(--mb-snow) 20% 40%,
    var(--mb-red) 40% 60%,
    var(--mb-green) 60% 80%,
    var(--mb-yellow) 80% 100%);
  opacity: 0.9;
  pointer-events: none;
}
.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}
.page-faq .faq-hero__title {
  margin: 10px 0 0;
  max-width: 22ch;
}
.page-faq .faq-hero__lede {
  margin: 16px 0 0;
  max-width: 62ch;
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-hero__panel {
  border: 2px solid var(--mb-ink);
  background: var(--mb-snow);
  color: var(--faq-snow-text);
  box-shadow: var(--mb-shadow);
  padding: 20px 20px 22px;
}
.page-faq .faq-hero__panel-title {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--mb-teal);
  font-family: var(--mb-font-mono);
}
.page-faq .faq-facts {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .faq-facts li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(11, 15, 20, 0.12);
}
.page-faq .faq-facts li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}
.page-faq .faq-facts__num {
  flex: 0 0 auto;
  min-width: 2.4ch;
  font-family: var(--mb-font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--mb-teal);
  font-variant-numeric: tabular-nums;
}
.page-faq .faq-facts__txt {
  font-size: 15px;
  line-height: 1.6;
}

/* ---------- 三步上手 ---------- */
.page-faq .faq-steps {
  border-bottom: 2px solid var(--mb-ink);
}
.page-faq .faq-stepper {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-faq .faq-stepper__item {
  display: flex;
}
.page-faq .faq-stepper__link {
  position: relative;
  display: block;
  width: 100%;
  padding: 24px 18px 22px;
  border: 2px solid var(--mb-ink);
  background: var(--mb-cobalt);
  box-shadow: var(--mb-shadow);
  color: var(--mb-snow);
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.page-faq .faq-stepper__link::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 4px;
  background: var(--mb-cyan);
}
.page-faq .faq-stepper__item:nth-child(2) .faq-stepper__link::before { background: var(--mb-violet); }
.page-faq .faq-stepper__item:nth-child(3) .faq-stepper__link::before { background: var(--mb-yellow); }
.page-faq .faq-stepper__link:hover,
.page-faq .faq-stepper__link:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: var(--mb-shadow-lg);
  border-color: var(--mb-cyan);
}
.page-faq .faq-stepper__num {
  display: block;
  font-family: var(--mb-font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--mb-cyan);
  font-variant-numeric: tabular-nums;
}
.page-faq .faq-stepper__title {
  display: block;
  margin-top: 12px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.page-faq .faq-stepper__desc {
  display: block;
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--faq-text);
}

/* ---------- 主体：索引 + 问答块 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding-top: 34px;
  padding-bottom: 40px;
  align-items: start;
}
.page-faq .faq-index {
  border: 2px solid var(--mb-ink);
  background: var(--mb-cobalt);
  box-shadow: var(--mb-shadow);
  padding: 16px 14px 18px;
}
.page-faq .faq-index__title {
  margin: 0 0 10px;
  padding-left: 8px;
  font-size: 12px;
  font-family: var(--mb-font-mono);
  letter-spacing: 0.1em;
  color: var(--mb-kaolin);
}
.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-left: 3px solid transparent;
  color: #C6D4E2;
  font-size: 15px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--mb-cyan);
  border-left-color: var(--mb-cyan);
  background: rgba(34, 224, 190, 0.08);
}
.page-faq .faq-index__num {
  flex: 0 0 auto;
  font-family: var(--mb-font-mono);
  font-size: 12px;
  color: var(--mb-kaolin);
  padding-top: 2px;
}

.page-faq .faq-flow {
  display: block;
  min-width: 0;
}
.page-faq .faq-block {
  margin-bottom: 22px;
  border: 2px solid var(--mb-ink);
  background: rgba(18, 41, 63, 0.62);
  box-shadow: var(--mb-shadow);
  scroll-margin-top: 96px;
}
.page-faq .faq-block:last-child {
  margin-bottom: 0;
}
.page-faq .faq-block__sum {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 16px;
  cursor: pointer;
  list-style: none;
  background: linear-gradient(90deg, rgba(34, 224, 190, 0.12), rgba(34, 224, 190, 0) 46%);
  border-bottom: 2px solid transparent;
}
.page-faq .faq-block__sum::-webkit-details-marker {
  display: none;
}
.page-faq .faq-block[open] > .faq-block__sum {
  border-bottom-color: var(--faq-line);
}
.page-faq .faq-block__sum:focus-visible {
  outline: 3px solid var(--mb-cyan);
  outline-offset: -3px;
}
.page-faq .faq-block__num {
  flex: 0 0 auto;
  font-family: var(--mb-font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--mb-deep);
  background: var(--mb-cyan);
  border: 2px solid var(--mb-ink);
  padding: 2px 6px;
}
.page-faq .faq-block__title {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--mb-snow);
}
.page-faq .faq-block__hint {
  flex: 0 0 auto;
  font-family: var(--mb-font-mono);
  font-size: 12px;
  color: var(--faq-dim);
}
.page-faq .faq-block__body {
  padding: 18px 16px 24px;
}
.page-faq .faq-block[open] .faq-block__body {
  animation: faq-fade-in 0.28s ease both;
}
@keyframes faq-fade-in {
  from {
    opacity: 0;
    transform: translateY(8px) skewY(-0.6deg);
  }
  to {
    opacity: 1;
    transform: translateY(0) skewY(0);
  }
}
.page-faq .faq-block__body p {
  margin: 0 0 14px;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--faq-text);
}
.page-faq .faq-block__body p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-block__body strong {
  color: var(--mb-cyan);
  font-weight: 700;
}

.page-faq .faq-ops {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .faq-ops:last-child {
  margin-bottom: 0;
}
.page-faq .faq-ops li {
  position: relative;
  padding-left: 24px;
  font-size: 16px;
  line-height: 1.74;
  color: var(--faq-text);
}
.page-faq .faq-ops li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 12px;
  width: 8px;
  height: 8px;
  background: var(--mb-cyan);
  transform: rotate(45deg);
}

/* ---------- 媒体 ---------- */
.page-faq .faq-media {
  margin: 6px 0 18px;
  border: 2px solid var(--mb-ink);
  background: var(--mb-deep);
  box-shadow: var(--mb-shadow);
  overflow: hidden;
}
.page-faq .faq-media:last-child {
  margin-bottom: 0;
}
.page-faq .faq-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-media__cap {
  margin: 0;
  padding: 9px 13px;
  border-top: 2px solid var(--mb-ink);
  font-size: 13px;
  line-height: 1.6;
  color: var(--faq-dim);
}

/* ---------- 标签速查表 ---------- */
.page-faq .faq-tablewrap {
  margin: 0 0 18px;
  border: 2px solid var(--mb-ink);
  background: rgba(11, 15, 20, 0.3);
  box-shadow: var(--mb-shadow);
  overflow-x: auto;
}
.page-faq .faq-tags {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: 15px;
}
.page-faq .faq-tags caption {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--mb-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--faq-dim);
  border-bottom: 2px solid var(--mb-ink);
}
.page-faq .faq-tags th,
.page-faq .faq-tags td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid var(--faq-line);
  color: var(--faq-text);
}
.page-faq .faq-tags thead th {
  font-size: 13px;
  font-weight: 600;
  color: var(--faq-dim);
  background: rgba(11, 15, 20, 0.4);
}
.page-faq .faq-tags tbody tr {
  transition: background 0.16s ease;
}
.page-faq .faq-tags tbody tr:hover,
.page-faq .faq-tags tbody tr:focus-within {
  background: rgba(34, 224, 190, 0.1);
}
.page-faq .faq-tags tbody tr:last-child th,
.page-faq .faq-tags tbody tr:last-child td {
  border-bottom: 0;
}
.page-faq .faq-swatch {
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-right: 7px;
  vertical-align: -1px;
  border: 2px solid var(--mb-ink);
}
.page-faq .faq-swatch--red { background: var(--mb-red); }
.page-faq .faq-swatch--yellow { background: var(--mb-yellow); }
.page-faq .faq-swatch--green { background: var(--mb-green); }
.page-faq .faq-swatch--violet { background: var(--mb-violet); }
.page-faq .faq-swatch--cyan { background: var(--mb-cyan); }

/* ---------- 两端对照 ---------- */
.page-faq .faq-compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 6px;
}
.page-faq .faq-compare__col {
  border: 2px solid var(--mb-ink);
  background: rgba(11, 15, 20, 0.3);
  padding: 16px 16px 6px;
}
.page-faq .faq-compare__col--desk {
  box-shadow: inset 0 4px 0 var(--mb-cyan);
}
.page-faq .faq-compare__col--phone {
  box-shadow: inset 0 4px 0 var(--mb-violet);
}
.page-faq .faq-compare__title {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 6px 0 14px;
  font-size: 16px;
  font-weight: 700;
  color: var(--mb-snow);
}
.page-faq .faq-compare__dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--mb-cyan);
  border: 2px solid var(--mb-ink);
}
.page-faq .faq-compare__col--phone .faq-compare__dot {
  background: var(--mb-violet);
}
.page-faq .faq-compare__col .faq-ops li {
  font-size: 15px;
}

/* ---------- 快速排查 ---------- */
.page-faq .faq-trouble {
  border-top: 2px solid var(--mb-ink);
}
.page-faq .faq-check {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-faq .faq-check li {
  border-left: 4px solid var(--mb-cyan);
  padding: 2px 0 2px 14px;
}
.page-faq .faq-check li:nth-child(2) { border-left-color: var(--mb-yellow); }
.page-faq .faq-check li:nth-child(3) { border-left-color: var(--mb-violet); }
.page-faq .faq-check li:nth-child(4) { border-left-color: var(--mb-green); }
.page-faq .faq-check li:nth-child(5) { border-left-color: var(--mb-red); }
.page-faq .faq-check__q {
  display: block;
  margin-bottom: 5px;
  font-size: 16px;
  font-weight: 700;
  color: var(--mb-snow);
}
.page-faq .faq-check__a {
  display: block;
  font-size: 15px;
  line-height: 1.74;
  color: var(--faq-text);
}

/* ---------- 收束 ---------- */
.page-faq .faq-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: center;
}
.page-faq .faq-cta__text {
  margin: 12px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--faq-text);
}
.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero {
    padding: 44px 0 56px;
  }
  .page-faq .faq-block__sum {
    padding: 18px 22px;
  }
  .page-faq .faq-block__title {
    font-size: 20px;
  }
  .page-faq .faq-block__body {
    padding: 22px 24px 28px;
  }
  .page-faq .faq-check {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-faq .faq-stepper {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
  .page-faq .faq-compare {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 36px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    gap: 44px;
    align-items: start;
  }
  .page-faq .faq-hero__panel {
    margin-top: 14px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 42px;
    padding-top: 48px;
    padding-bottom: 56px;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 92px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-block[open] .faq-block__body {
    animation: none;
  }
  .page-faq .faq-stepper__link,
  .page-faq .faq-index__list a,
  .page-faq .faq-tags tbody tr {
    transition: none;
  }
  .page-faq .faq-stepper__link:hover,
  .page-faq .faq-stepper__link:focus-visible {
    transform: none;
  }
}