/* ===== 常见问答页面专属样式（作用域 .page-faq） ===== */
.page-faq {
  --faq-gap: clamp(20px, 3.2vw, 34px);
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(30px, 5vw, 58px) 0 clamp(38px, 6vw, 82px);
  background:
    radial-gradient(760px 420px at 88% -14%, rgba(40, 228, 217, 0.16), transparent 64%),
    radial-gradient(520px 340px at 4% 108%, rgba(255, 106, 43, 0.12), transparent 66%),
    linear-gradient(180deg, var(--bg-night) 0%, var(--bg-deep) 82%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 14%;
  left: 44%;
  width: 74%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(40, 228, 217, 0.42), transparent);
  transform: rotate(var(--angle));
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  gap: clamp(26px, 4vw, 50px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-size: clamp(32px, 5.6vw, 62px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 46ch;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin: 30px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 14px;
  color: var(--ink-dim);
}

.page-faq .faq-hero__facts .num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .faq-hero__art {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--bg-card);
  overflow: hidden;
  transform: rotate(-2.2deg);
  box-shadow: 12px 12px 0 -1px rgba(38, 51, 77, 0.5), var(--shadow-panel);
}

.page-faq .faq-hero__art img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* ---------- 工具条 ---------- */
.page-faq .faq-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  padding-bottom: 18px;
  margin-bottom: clamp(24px, 3.4vw, 40px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-toolbar__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
}

.page-faq .faq-toolbar .filter-bar {
  flex: 1 1 300px;
  flex-wrap: wrap;
}

/* ---------- 分栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(20, 31, 51, 0.92), rgba(12, 21, 38, 0.92));
  padding: 20px 18px;
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-index__title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-index__group {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-index__group:first-of-type {
  border-top: 0;
  padding-top: 4px;
}

.page-faq .faq-index__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}

.page-faq .faq-index__head:hover .faq-index__name,
.page-faq .faq-index__head:focus-visible .faq-index__name {
  color: var(--cyan);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
}

.page-faq .faq-index__link {
  display: block;
  padding: 7px 10px 7px 13px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-dim);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--ink);
  border-left-color: var(--cyan);
  background: rgba(40, 228, 217, 0.08);
}

/* ---------- 右侧问答流 ---------- */
.page-faq .faq-flow {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-group {
  position: relative;
  border: 1px solid var(--line);
  border-left: 2px solid rgba(40, 228, 217, 0.55);
  background: rgba(20, 31, 51, 0.5);
  box-shadow: var(--shadow-panel);
  scroll-margin-top: 100px;
}

.page-faq .faq-group__intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  padding: 20px 20px 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .faq-group__title {
  margin: 8px 0 0;
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: -0.01em;
}

.page-faq .faq-group__lede {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-dim);
}

.page-faq .faq-group__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--bg-deep);
  overflow: hidden;
}

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

.page-faq .faq-group__figure figcaption {
  padding: 10px 12px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--ink-dim);
}

.page-faq .faq-flow .accordion__item {
  scroll-margin-top: 100px;
}

.page-faq .faq-flow .accordion__trigger {
  border-top: 1px solid var(--line);
}

.page-faq .faq-flow .accordion__item:first-child .accordion__trigger {
  border-top: 0;
}

.page-faq .faq-flow .accordion__q {
  display: block;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
}

.page-faq .faq-flow .accordion__panel-inner {
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-dim);
}

.page-faq .faq-flow .accordion__panel-inner p {
  margin: 0 0 10px;
}

.page-faq .faq-flow .accordion__panel-inner p:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-flow .accordion__panel-inner a {
  color: var(--cyan);
}

.page-faq .faq-flow .accordion__panel-inner .copy-btn {
  margin-top: 12px;
}

.page-faq .faq-flow .num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--cyan);
}

/* ---------- 同步窗口说明带 ---------- */
.page-faq .faq-sync {
  position: relative;
  overflow: hidden;
  margin-top: clamp(40px, 6vw, 84px);
  padding: clamp(34px, 5vw, 64px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(100deg, rgba(12, 21, 38, 0.96), rgba(6, 10, 20, 0.98));
}

.page-faq .faq-sync::after {
  content: "";
  position: absolute;
  inset: auto -8% -40% 44%;
  height: 220px;
  background: linear-gradient(90deg, rgba(40, 228, 217, 0.16), transparent 72%);
  transform: rotate(var(--angle));
  pointer-events: none;
}

.page-faq .faq-sync__head {
  position: relative;
  max-width: 62ch;
}

.page-faq .faq-sync__head h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 3.4vw, 38px);
  letter-spacing: -0.015em;
}

.page-faq .faq-sync__head p {
  margin: 12px 0 0;
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-faq .faq-sync__track {
  position: relative;
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-faq .faq-sync__slot {
  position: relative;
  padding-top: 28px;
}

.page-faq .faq-sync__dot {
  position: absolute;
  top: 0;
  left: 0;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(40, 228, 217, 0.12);
}

.page-faq .faq-sync__slot:last-child .faq-sync__dot {
  border-color: var(--green);
  box-shadow: 0 0 0 4px rgba(51, 227, 155, 0.12);
}

.page-faq .faq-sync__time {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-sync__slot:last-child .faq-sync__time {
  color: var(--green);
}

.page-faq .faq-sync__label {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-dim);
}

/* ---------- 收尾面板 ---------- */
.page-faq .faq-next {
  padding: clamp(38px, 5.4vw, 76px) 0 clamp(44px, 6vw, 84px);
}

.page-faq .faq-next__panel {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 3.6vw, 46px);
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(20, 31, 51, 0.94), rgba(12, 21, 38, 0.94));
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-next__panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 132px;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--cyan));
}

.page-faq .faq-next__panel h2 {
  margin: 8px 0 0;
  font-size: clamp(22px, 3vw, 32px);
  letter-spacing: -0.015em;
}

.page-faq .faq-next__panel > p {
  margin: 12px 0 0;
  max-width: 64ch;
  line-height: 1.78;
  color: var(--ink-dim);
}

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

.page-faq .faq-next__links {
  list-style: none;
  margin: 22px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-next__links li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  font-size: 14.5px;
  color: var(--ink-dim);
  overflow-wrap: anywhere;
}

.page-faq .faq-next__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-group__intro--media {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .page-faq .faq-next__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 32px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-sync__track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }

  .page-faq .faq-sync__track::before {
    content: "";
    position: absolute;
    top: 7px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--line) 10%, var(--line) 90%, transparent);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 34fr) minmax(0, 66fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 92px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
  }
}

@media (max-width: 640px) {
  .page-faq .faq-hero__art {
    transform: none;
    box-shadow: var(--shadow-panel);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__art {
    transform: none;
  }
}