.page-faq {
  --faq-gap: clamp(28px, 4vw, 52px);
  background-color: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(48px, 7vw, 96px);
}

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

/* 首屏 */
.page-faq .faq-hero {
  padding: clamp(18px, 3vw, 32px) 0 clamp(32px, 5vw, 56px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
}

.page-faq .faq-hero__copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
  min-width: 0;
}

.page-faq .faq-hero__copy > * {
  margin: 0;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 6.4vw, 54px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-hero__copy .lede {
  color: var(--mist);
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.8;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-hero__visual {
  position: relative;
  margin: 0;
  border-radius: var(--radius);
  border: 1px solid var(--edge);
  overflow: hidden;
  box-shadow: var(--shadow-panel);
  background-color: var(--panel);
}

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

.page-faq .faq-hero__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(90deg, rgba(102, 242, 194, 0.07) 1px, transparent 1px),
    linear-gradient(0deg, rgba(102, 242, 194, 0.07) 1px, transparent 1px);
  background-size: 46px 46px;
}

/* 正文双栏 */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  scroll-margin-top: 96px;
}

.page-faq .faq-body > * {
  min-width: 0;
}

/* 任务索引 */
.page-faq .faq-index {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: clamp(18px, 2.4vw, 24px);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  background-color: var(--panel);
  background-image: linear-gradient(180deg, rgba(102, 242, 194, 0.06), transparent 48%);
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-index__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--paper);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.5;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .faq-index__link:hover {
  background-color: rgba(102, 242, 194, 0.08);
  border-color: var(--edge-mint);
  color: var(--mint);
}

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

.page-faq .faq-index__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--arena);
}

.page-faq .faq-legend {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--edge);
}

.page-faq .faq-legend__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-legend__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .faq-legend__item {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr);
  gap: 9px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .faq-legend__dot {
  width: 8px;
  height: 8px;
  margin-top: 7px;
  border-radius: 50%;
  background-color: var(--mint);
  box-shadow: 0 0 0 3px rgba(102, 242, 194, 0.14);
}

.page-faq .faq-legend__item:nth-child(2) .faq-legend__dot {
  background-color: var(--moss);
  box-shadow: 0 0 0 3px rgba(111, 142, 115, 0.2);
}

.page-faq .faq-legend__item:nth-child(3) .faq-legend__dot {
  background-color: var(--clay);
  box-shadow: 0 0 0 3px rgba(201, 106, 61, 0.2);
}

.page-faq .faq-legend__item:nth-child(4) .faq-legend__dot {
  background-color: var(--arena);
  box-shadow: 0 0 0 3px rgba(240, 138, 75, 0.18);
}

.page-faq .faq-legend .btn {
  align-self: flex-start;
}

/* 问答流 */
.page-faq .faq-stream {
  display: flex;
  flex-direction: column;
  gap: clamp(32px, 5vw, 56px);
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: 104px;
}

.page-faq .faq-group__head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
  padding-left: 14px;
  border-left: 2px solid var(--clay);
  transition: border-color 0.24s var(--ease);
}

.page-faq .faq-group:target .faq-group__head {
  border-left-color: var(--mint);
}

.page-faq .faq-group__coord {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 3.4vw, 28px);
  font-weight: 900;
  line-height: 1.28;
  color: var(--paper);
}

.page-faq .faq-group__desc {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

/* 可展开问答 */
.page-faq .faq-item {
  border: 1px solid var(--edge);
  border-radius: var(--radius-sm);
  background-color: var(--panel);
  overflow: hidden;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

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

.page-faq .faq-item:hover {
  border-color: var(--edge-strong);
}

.page-faq .faq-item[open] {
  border-color: var(--edge-mint);
  background-color: rgba(102, 242, 194, 0.05);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

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

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

.page-faq .faq-item__no {
  min-width: 34px;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--arena);
}

.page-faq .faq-item__text {
  font-family: var(--font-display);
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
}

.page-faq .faq-item__chev {
  width: 10px;
  height: 10px;
  margin-top: 6px;
  border-right: 2px solid var(--mist);
  border-bottom: 2px solid var(--mist);
  transform: rotate(45deg);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-faq .faq-item[open] .faq-item__chev {
  transform: rotate(-135deg);
  border-color: var(--mint);
}

.page-faq .faq-item__a {
  padding: 0 16px 18px 62px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

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

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

.page-faq .faq-item__a strong {
  color: var(--paper);
  font-weight: 700;
}

.page-faq .faq-item__a ul {
  margin: 10px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.page-faq .faq-item__a li::marker {
  color: var(--moss);
}

/* 数据异常配图 */
.page-faq .faq-figure {
  position: relative;
  margin: 0 0 16px;
  border: 1px solid var(--edge);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--panel);
}

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

.page-faq .faq-figure__cap {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
  border-top: 1px solid var(--edge);
  background-color: rgba(6, 25, 35, 0.72);
}

/* 联系渠道 */
.page-faq .faq-channels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.page-faq .faq-channel {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--edge);
  border-left: 3px solid var(--arena);
  border-radius: var(--radius-sm);
  background-color: var(--panel);
  min-width: 0;
}

.page-faq .faq-channel__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-channel__value {
  font-family: var(--font-mono);
  font-size: clamp(14px, 2vw, 17px);
  letter-spacing: 0.01em;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-faq .faq-channel__meta {
  font-size: 13px;
  line-height: 1.6;
  color: var(--moss);
}

/* 收束行动 */
.page-faq .faq-next {
  margin-top: clamp(40px, 6vw, 76px);
  padding: clamp(22px, 3.4vw, 36px);
  border: 1px solid var(--edge-mint);
  border-radius: var(--radius);
  background-color: var(--panel);
  background-image: radial-gradient(120% 140% at 0% 0%, rgba(102, 242, 194, 0.1), transparent 58%);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-faq .faq-next__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.8vw, 26px);
  font-weight: 900;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 平板及以上 */
@media (min-width: 700px) {
  .page-faq .faq-hero__meta {
    gap: 10px;
  }

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

  .page-faq .faq-item__q {
    padding: 16px 20px;
    gap: 14px;
  }

  .page-faq .faq-item__a {
    padding: 0 20px 20px 68px;
  }
}

/* 桌面双栏：左侧索引吸顶 */
@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-faq .faq-body {
    grid-template-columns: minmax(0, 276px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-next {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item,
  .page-faq .faq-item__chev,
  .page-faq .faq-group__head {
    transition: none;
  }
}