.page-faq {
  --faq-rule: 1px solid var(--s3-line);
  --faq-num: rgba(0, 229, 208, 0.12);
  padding-bottom: 68px;
}

.page-faq .s3-h2 {
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.18;
  letter-spacing: -0.01em;
}

/* 首屏 */
.page-faq .faq-hero {
  padding: 36px 0 34px;
  background:
    radial-gradient(120% 88% at 88% 0%, rgba(0, 229, 208, 0.11), transparent 62%),
    radial-gradient(90% 90% at 6% 6%, rgba(255, 122, 26, 0.08), transparent 66%);
}

.page-faq .faq-hero__title {
  margin: 14px 0 16px;
  font-size: clamp(30px, 6vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.025em;
  max-width: 16ch;
}

.page-faq .faq-hero__lede {
  max-width: 640px;
  margin: 0 0 26px;
  color: var(--s3-muted);
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chips a {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--s3-line);
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--s3-muted);
  text-decoration: none;
  transition: color 180ms var(--s3-ease), background-color 180ms var(--s3-ease),
    border-color 180ms var(--s3-ease);
}

.page-faq .faq-chips a:hover,
.page-faq .faq-chips a:focus-visible {
  color: var(--s3-ink);
  background-color: var(--s3-cyan);
  border-color: var(--s3-cyan);
}

/* 问题分区 */
.page-faq .faq-block {
  padding: 52px 0;
  border-top: var(--faq-rule);
  scroll-margin-top: 96px;
}

.page-faq .faq-block--last {
  padding-bottom: 72px;
}

.page-faq .faq-block__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 28px;
}

.page-faq .faq-block__num {
  font-family: var(--s3-font-mono);
  font-size: 44px;
  font-weight: 600;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--faq-num);
  -webkit-text-stroke: 1px var(--s3-cyan);
}

.page-faq .faq-block__intro h2 {
  margin: 0 0 8px;
}

.page-faq .faq-block__lead {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.7;
  color: var(--s3-muted);
}

.page-faq .faq-block__kicker {
  justify-self: start;
  font-size: 13px;
  color: var(--s3-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 208, 0.4);
  padding-bottom: 2px;
  transition: color 180ms var(--s3-ease), border-color 180ms var(--s3-ease);
}

.page-faq .faq-block__kicker:hover,
.page-faq .faq-block__kicker:focus-visible {
  color: var(--s3-cyan-bright);
  border-color: var(--s3-cyan-bright);
}

.page-faq .faq-block__body--split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

/* 手风琴 */
.page-faq .faq-list {
  border-top: var(--faq-rule);
}

.page-faq .faq-item {
  border-bottom: var(--faq-rule);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 2px;
  list-style: none;
  cursor: pointer;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--s3-text);
  transition: color 180ms var(--s3-ease);
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q:hover {
  color: var(--s3-cyan);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--s3-cyan);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(0, 229, 208, 0.18);
}

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

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background-color: var(--s3-cyan);
}

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

.page-faq .faq-item__icon::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
  transition: transform 180ms var(--s3-ease), opacity 180ms var(--s3-ease);
}

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

.page-faq .faq-item__a {
  padding: 2px 0 20px 16px;
  border-left: 3px solid var(--s3-cyan);
  font-size: 15px;
  line-height: 1.75;
  color: var(--s3-muted);
  animation: faq-open 180ms var(--s3-ease) both;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-item__a a {
  color: var(--s3-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 208, 0.4);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--s3-cyan-bright);
}

@keyframes faq-open {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* 费用区侧栏 */
.page-faq .faq-aside {
  padding: 16px;
  border: var(--faq-rule);
  border-radius: var(--s3-radius);
  background: linear-gradient(158deg, rgba(0, 229, 208, 0.07), rgba(255, 122, 26, 0.05));
}

.page-faq .faq-aside img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--s3-radius);
  object-fit: cover;
}

.page-faq .faq-aside__cap {
  margin: 14px 0 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--s3-muted);
}

.page-faq .faq-aside__link {
  font-size: 14px;
  font-weight: 500;
  color: var(--s3-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 208, 0.45);
}

.page-faq .faq-aside__link:hover,
.page-faq .faq-aside__link:focus-visible {
  color: var(--s3-cyan-bright);
}

/* 播放区图示与三步自查 */
.page-faq .faq-figure {
  margin: 0 0 30px;
  border: var(--faq-rule);
  border-radius: var(--s3-radius);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.page-faq .faq-steps__dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--s3-cyan);
  border-radius: 50%;
  font-family: var(--s3-font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--s3-cyan);
}

.page-faq .faq-steps__label {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  color: var(--s3-text);
}

.page-faq .faq-steps p:last-child {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--s3-muted);
}

/* 设备门槛 */
.page-faq .faq-specs {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-specs li {
  border-left: 2px solid var(--s3-cyan);
  padding-left: 14px;
}

.page-faq .faq-specs strong {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--s3-cyan);
}

.page-faq .faq-specs span {
  display: block;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--s3-muted);
}

/* 联系通道 */
.page-faq .faq-channels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-faq .faq-channel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
  border: var(--faq-rule);
  border-radius: var(--s3-radius);
  background-color: var(--s3-deep);
  transition: transform 200ms var(--s3-ease), border-color 200ms var(--s3-ease);
}

.page-faq .faq-channel:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 229, 208, 0.5);
}

.page-faq .faq-channel--hot {
  background: linear-gradient(160deg, rgba(255, 122, 26, 0.12), rgba(18, 34, 74, 0.9));
  border-color: rgba(255, 122, 26, 0.4);
}

.page-faq .faq-channel--hot:hover {
  border-color: var(--s3-orange);
}

.page-faq .faq-channel__label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--s3-muted);
}

.page-faq .faq-channel__value {
  font-family: var(--s3-font-mono);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--s3-text);
  word-break: break-all;
  user-select: all;
}

.page-faq .faq-channel p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--s3-muted);
}

.page-faq .faq-channel__link {
  margin-top: auto;
  font-size: 14px;
  font-weight: 500;
  color: var(--s3-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 208, 0.45);
  align-self: flex-start;
}

.page-faq .faq-channel__link:hover,
.page-faq .faq-channel__link:focus-visible {
  color: var(--s3-cyan-bright);
}

.page-faq .faq-note {
  margin: 28px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--s3-orange);
  font-size: 14px;
  line-height: 1.75;
  color: var(--s3-muted);
}

.page-faq .faq-related {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* 平板与桌面 */
@media (min-width: 720px) {
  .page-faq .faq-block__head {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: end;
    gap: 24px;
  }

  .page-faq .faq-block__num {
    font-size: 64px;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }

  .page-faq .faq-specs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-faq .faq-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-hero {
    padding: 56px 0 40px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-block__body--split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-block__num {
    font-size: 78px;
  }

  .page-faq .faq-item__q {
    font-size: 18px;
    padding: 19px 2px;
  }
}