.page-faq {
  --faq-gap: clamp(20px, 4vw, 44px);
  --faq-soft: #16203A;
  padding-bottom: clamp(40px, 6vw, 80px);
  overflow-x: clip;
}

.page-faq a {
  color: var(--orange);
  text-decoration-color: rgba(255, 106, 31, .45);
  text-underline-offset: 3px;
}

.page-faq a:hover,
.page-faq a:focus-visible {
  text-decoration-color: var(--orange);
}

.page-faq .breadcrumb {
  padding-top: clamp(16px, 3vw, 28px);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 4.5vw, 52px) 0 clamp(34px, 5.5vw, 68px);
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(122, 43, 255, .18), transparent 62%),
    radial-gradient(90% 80% at 6% 100%, rgba(255, 106, 31, .10), transparent 66%);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: var(--faq-gap);
  align-items: center;
}

.page-faq .faq-hero__copy {
  max-width: 66ch;
}

.page-faq .faq-hero__copy .eyebrow {
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--green);
  margin: 0 0 12px;
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--ice);
}

.page-faq .faq-hero__lede {
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--fg-muted);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-faq .faq-hint {
  border-bottom: 1px dashed rgba(143, 160, 191, .55);
  cursor: help;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-hero__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-800);
  box-shadow: 0 20px 46px rgba(0, 0, 0, .42);
}

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

.page-faq .faq-hero__media .media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--ice);
  background: linear-gradient(to top, rgba(11, 18, 32, .88), rgba(11, 18, 32, 0));
}

/* 主体看板 */
.page-faq .faq-board {
  padding: clamp(36px, 5.5vw, 76px) 0 0;
}

.page-faq .faq-board__inner {
  display: grid;
  gap: var(--faq-gap);
}

/* 左侧场景索引 */
.page-faq .faq-index {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(19, 28, 46, .95), rgba(11, 18, 32, .95));
  padding: 18px 16px;
}

.page-faq .faq-index__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--faq-soft);
  border-radius: 999px;
  font-size: 14px;
  color: var(--fg-muted);
  text-decoration: none;
  transition: border-color .18s ease, color .18s ease, background-color .18s ease;
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  color: var(--ice);
  border-color: var(--orange);
  background: rgba(255, 106, 31, .09);
}

.page-faq .faq-chip__dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px rgba(87, 242, 164, .16);
}

.page-faq .faq-chip--orange .faq-chip__dot {
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 106, 31, .16);
}

.page-faq .faq-chip--violet .faq-chip__dot {
  background: var(--violet);
  box-shadow: 0 0 0 3px rgba(122, 43, 255, .18);
}

.page-faq .faq-chip--amber .faq-chip__dot {
  background: var(--amber);
  box-shadow: 0 0 0 3px rgba(255, 194, 75, .16);
}

.page-faq .faq-index__note {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 12px;
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--faq-soft);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-faq .faq-index__note strong {
  color: var(--orange);
  font-weight: 600;
}

/* 问答流 */
.page-faq .faq-stream {
  display: grid;
  gap: clamp(30px, 4vw, 52px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 96px;
}

.page-faq .faq-group__head {
  padding-bottom: 16px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .2em;
  color: var(--orange);
  margin-bottom: 6px;
}

.page-faq .faq-group__head h2 {
  margin: 0 0 8px;
  font-size: clamp(21px, 2.8vw, 30px);
  line-height: 1.28;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--ice);
}

.page-faq .faq-group__head p {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--fg-muted);
}

.page-faq .faq-item {
  border: 1px solid var(--faq-soft);
  border-radius: var(--radius);
  background: var(--ink-800);
  margin-bottom: 10px;
  transition: border-color .18s ease, box-shadow .18s ease;
}

.page-faq .faq-item:hover {
  border-color: rgba(255, 106, 31, .5);
}

.page-faq .faq-item[open] {
  border-color: var(--line);
  box-shadow: 0 14px 30px rgba(0, 0, 0, .3);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ice);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
  border-radius: var(--radius);
}

.page-faq .faq-item__mark {
  flex: none;
  width: 18px;
  height: 2px;
  margin-top: 13px;
  border-radius: 2px;
  background: var(--green);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__icon {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  color: var(--mist);
  transition: color .2s ease;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: currentColor;
  border-radius: 1px;
  transition: transform .22s ease;
}

.page-faq .faq-item__icon::before {
  left: 50%;
  top: 0;
  width: 2px;
  height: 100%;
  transform: translateX(-50%);
}

.page-faq .faq-item__icon::after {
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .faq-item > summary:hover .faq-item__icon,
.page-faq .faq-item[open] .faq-item__icon {
  color: var(--orange);
}

.page-faq .faq-item[open] .faq-item__icon::before {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .faq-item__body {
  padding: 0 18px 18px 50px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--fg-muted);
}

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

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

.page-faq .faq-mark {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--orange);
}

.page-faq .faq-inline-media {
  margin: 16px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-900);
}

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

.page-faq .faq-inline-media .media__caption {
  display: block;
  padding: 9px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--mist);
  border-top: 1px solid var(--faq-soft);
}

/* 底部联系区 */
.page-faq .faq-reach {
  margin-top: clamp(12px, 2vw, 24px);
  padding: clamp(28px, 4vw, 44px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(140deg, rgba(122, 43, 255, .20), rgba(255, 45, 120, .12) 55%, rgba(19, 28, 46, .9)),
    var(--ink-800);
  scroll-margin-top: 96px;
}

.page-faq .faq-reach__inner {
  display: grid;
  gap: clamp(22px, 3.4vw, 34px);
}

.page-faq .faq-reach__copy .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--green);
}

.page-faq .faq-reach__copy h2 {
  margin: 0 0 12px;
  font-size: clamp(21px, 2.8vw, 29px);
  line-height: 1.3;
  font-weight: 900;
  color: var(--ice);
}

.page-faq .faq-reach__copy p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--fg-muted);
}

.page-faq .faq-reach__channels {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq .faq-reach__channels li {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11, 18, 32, .62);
}

.page-faq .faq-reach__channels span {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-reach__channels strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--ice);
  word-break: break-word;
}

/* 底部状态带 */
.page-faq .faq-footline {
  margin-top: clamp(26px, 4vw, 48px);
  padding: 18px 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background: var(--ink-900);
}

.page-faq .faq-footline__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 22px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--mist);
}

/* 响应式 */
@media (min-width: 720px) {
  .page-faq .faq-item__body {
    padding-right: 26px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  }

  .page-faq .faq-hero__media {
    transform: rotate(1.4deg);
  }

  .page-faq .faq-reach__inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-board__inner {
    grid-template-columns: 252px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 92px;
  }

  .page-faq .faq-stream {
    padding-left: 4px;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-item__body {
    padding-left: 18px;
  }

  .page-faq .faq-item__mark {
    display: none;
  }

  .page-faq .faq-item > summary {
    gap: 10px;
    padding: 15px 14px;
  }

  .page-faq .faq-reach {
    padding: 22px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
  }

  .page-faq .faq-hero__media {
    transform: none;
  }
}