.page-faq {
  background: var(--ink-900);
  color: var(--bone);
}

.page-faq .page-container {
  padding-left: clamp(20px, 4vw, 56px);
  padding-right: clamp(20px, 4vw, 56px);
}

/* ---------- 首屏：坐标索引式标题 ---------- */
.page-faq .faq-intro {
  position: relative;
  padding: clamp(48px, 8vw, 108px) 0 clamp(40px, 5vw, 72px);
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(ellipse 60% 50% at 12% 8%, rgba(31, 122, 92, 0.22), transparent 60%),
    radial-gradient(ellipse 40% 40% at 92% 20%, rgba(74, 20, 38, 0.25), transparent 65%),
    linear-gradient(180deg, var(--ink-950), var(--ink-900));
}

.page-faq .faq-coords {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin-bottom: 32px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line-soft);
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--sage);
}

.page-faq .faq-coords span {
  position: relative;
  padding-left: 12px;
}

.page-faq .faq-coords span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--lime);
  transform: translateY(-50%);
}

.page-faq .faq-title {
  margin: 0 0 28px;
  max-width: 22ch;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5.4vw, 4.2rem);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--bone);
}

.page-faq .faq-title::selection {
  background: var(--lime);
  color: var(--ink-900);
}

.page-faq .faq-lede {
  max-width: 62ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.75;
  color: var(--sage);
}

.page-faq .faq-lede a {
  color: var(--lime);
}

/* 统计条：圆角细线栏 */
.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 44px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  overflow: hidden;
}

.page-faq .faq-stat {
  padding: 18px 20px;
  background: var(--ink-800);
}

.page-faq .faq-stat dt {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--sage);
}

.page-faq .faq-stat dd {
  margin: 8px 0 0;
  font-family: var(--font-data);
  font-size: clamp(16px, 1.6vw, 20px);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--lime);
}

.page-faq .faq-stat:nth-child(3) dd,
.page-faq .faq-stat:nth-child(4) dd {
  color: var(--bone);
}

/* ---------- 双栏主体 ---------- */
.page-faq .faq-shell {
  padding: clamp(36px, 5vw, 64px) 0 clamp(48px, 6vw, 88px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.page-faq .faq-index {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, var(--ink-800), var(--ink-900));
  padding: 22px;
  box-shadow: var(--shadow);
}

.page-faq .faq-index__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line-soft);
}

.page-faq .faq-index__count {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--sage);
}

.page-faq .faq-index__nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 16px 0 4px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border-radius: var(--radius-sm);
  color: var(--bone);
  text-decoration: none;
  font-size: 14px;
  transition: background-color 0.22s var(--ease), color 0.22s var(--ease);
}

.page-faq .faq-index__link:hover {
  background: rgba(31, 122, 92, 0.22);
}

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

.page-faq .faq-index__code {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--lime);
}

.page-faq .faq-index__text {
  font-weight: 500;
}

.page-faq .faq-index__link .faq-index__count {
  color: var(--sage);
}

.page-faq .faq-legend {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--line-soft);
}

.page-faq .faq-legend__row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--sage);
}

.page-faq .faq-legend__row .tag {
  flex: 0 0 auto;
}

/* ---------- 折叠答案流 ---------- */
.page-faq .faq-stream {
  display: flex;
  flex-direction: column;
  gap: clamp(36px, 4.5vw, 60px);
  min-width: 0;
}

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

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  padding-bottom: 18px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__num {
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--lime);
}

.page-faq .faq-group__title {
  margin: 0;
  flex: 1 1 180px;
  font-family: var(--font-display);
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--bone);
}

.page-faq .faq-group__desc {
  flex-basis: 100%;
  max-width: 52ch;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--sage);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line-soft);
  transition: background-color 0.22s var(--ease);
}

.page-faq .faq-item[open] {
  background: linear-gradient(90deg, rgba(18, 59, 46, 0.5), rgba(18, 59, 46, 0.04));
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px 14px;
  padding: 18px 8px;
  cursor: pointer;
  list-style: none;
  color: var(--bone);
  font-size: 15.5px;
  line-height: 1.55;
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-item > summary:hover .faq-item__text {
  color: var(--lime);
}

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

.page-faq .faq-item__code {
  font-family: var(--font-data);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--sage);
  transition: color 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-item__code {
  color: var(--lime);
}

.page-faq .faq-item__text {
  font-weight: 500;
  transition: color 0.2s var(--ease);
}

.page-faq .faq-item__glyph {
  position: relative;
  width: 18px;
  height: 18px;
  border: 1px solid var(--sage);
  border-radius: 50%;
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease);
}

.page-faq .faq-item__glyph::before,
.page-faq .faq-item__glyph::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--sage);
  transform: translate(-50%, -50%);
  transition: transform 0.28s var(--ease), background-color 0.28s var(--ease);
}

.page-faq .faq-item__glyph::before {
  width: 8px;
  height: 1px;
}

.page-faq .faq-item__glyph::after {
  width: 1px;
  height: 8px;
}

.page-faq .faq-item[open] .faq-item__glyph {
  transform: rotate(180deg);
  border-color: var(--lime);
}

.page-faq .faq-item[open] .faq-item__glyph::before,
.page-faq .faq-item[open] .faq-item__glyph::after {
  background: var(--lime);
}

.page-faq .faq-item[open] .faq-item__glyph::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .faq-item__a {
  padding: 0 8px 22px 44px;
}

.page-faq .faq-item__a p {
  max-width: 60ch;
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(242, 245, 233, 0.82);
}

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

.page-faq .faq-item__a a {
  color: var(--lime);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  text-decoration-thickness: 2px;
}

.page-faq .faq-item__a a:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------- 图片 ---------- */
.page-faq .faq-media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(140deg, var(--ink-800), var(--indigo));
}

.page-faq .faq-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 55%, rgba(7, 17, 14, 0.55));
}

.page-faq .faq-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-media--tight {
  margin-top: 24px;
}

.page-faq .faq-media--tight img {
  aspect-ratio: 10 / 7;
}

/* ---------- 联系区 ---------- */
.page-faq .faq-contact {
  padding: clamp(48px, 7vw, 96px) 0 clamp(56px, 8vw, 112px);
  border-top: 1px solid var(--line);
  background:
    radial-gradient(ellipse 55% 60% at 85% 20%, rgba(74, 20, 38, 0.32), transparent 60%),
    linear-gradient(180deg, var(--ink-800), var(--ink-950));
}

.page-faq .faq-contact__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  align-items: start;
}

.page-faq .faq-contact__title {
  margin: 10px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(26px, 3.4vw, 42px);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--bone);
}

.page-faq .faq-contact__text .prose {
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--sage);
}

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

.page-faq .faq-channels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.page-faq .faq-channel {
  display: grid;
  gap: 6px;
  padding: 16px 20px;
  background: var(--ink-900);
}

.page-faq .faq-channel__key {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--sage);
}

.page-faq .faq-channel__val {
  font-family: var(--font-data);
  font-size: 15px;
  line-height: 1.5;
  color: var(--bone);
  word-break: break-word;
}

.page-faq .faq-channel__val--copy {
  user-select: all;
  -webkit-user-select: all;
  cursor: copy;
}

.page-faq .faq-channel__val--addr {
  font-family: var(--font-display);
  font-size: 14.5px;
  line-height: 1.55;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-index__nav {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .page-faq .faq-index__link {
    flex: 1 1 calc(50% - 2px);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 260px) minmax(0, 1fr);
    gap: clamp(40px, 4.6vw, 72px);
    align-items: start;
  }

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

  .page-faq .faq-index__nav {
    flex-direction: column;
    flex-wrap: nowrap;
  }

  .page-faq .faq-index__link {
    flex: 0 0 auto;
  }

  .page-faq .faq-contact__inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 88px);
  }
}

@media (min-width: 1140px) {
  .page-faq .faq-group__head {
    display: grid;
    grid-template-columns: 46px minmax(0, 1fr);
    align-items: end;
    gap: 4px 18px;
  }

  .page-faq .faq-group__num {
    grid-row: span 2;
    align-self: start;
    padding-top: 8px;
  }

  .page-faq .faq-group__desc {
    grid-column: 2;
    flex-basis: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}