.page-faq {
  --faq-mint: var(--c-mint);
  --faq-orange: var(--c-primary);
  --faq-dim: var(--c-text-dim);
  --faq-line: var(--c-line);
  --faq-line-light: var(--c-line-light);
  --faq-card: rgba(14, 35, 77, 0.76);
  --faq-card-open: rgba(16, 42, 88, 0.9);
  --faq-a-bg: linear-gradient(180deg, rgba(23, 48, 94, 0.62), rgba(14, 35, 77, 0.32));
  --faq-hero-orb: rgba(255, 107, 53, 0.22);
  background: linear-gradient(180deg, var(--c-bg) 0%, var(--c-bg-deep) 100%);
  color: var(--c-text);
  position: relative;
  width: 100%;
  overflow-x: hidden;
}

.page-faq .container {
  padding-left: 20px;
  padding-right: 20px;
  box-sizing: border-box;
}

/* ===== 顶部引导区 ===== */
.page-faq .faq-hero {
  position: relative;
  padding: 44px 0 28px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -90px;
  right: -120px;
  width: 360px;
  height: 360px;
  background: var(--grad-orange);
  border-radius: 50%;
  filter: blur(70px);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--faq-dim);
  margin-bottom: 30px;
  letter-spacing: 0.02em;
}

.page-faq .faq-breadcrumb a {
  color: var(--faq-dim);
  text-decoration: none;
  transition: color var(--transition);
}

.page-faq .faq-breadcrumb a:hover {
  color: var(--faq-orange);
}

.page-faq .faq-breadcrumb__sep {
  opacity: 0.5;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: end;
}

.page-faq .faq-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faq-mint);
  padding: 8px 16px;
  border: 1px solid rgba(57, 255, 20, 0.3);
  border-radius: var(--radius-pill);
  background: rgba(57, 255, 20, 0.06);
  margin-bottom: 20px;
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.05rem, 5.6vw, 3.75rem);
  line-height: 1.14;
  margin: 0 0 18px;
  letter-spacing: 0.01em;
  color: #fff;
}

.page-faq .faq-hero__title-line {
  display: block;
  color: var(--c-text);
  font-size: 0.68em;
  line-height: 1.4;
  margin-top: 6px;
}

.page-faq .faq-hero__lead {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--faq-dim);
  max-width: 540px;
  margin: 0 0 26px;
}

.page-faq .faq-hero__search {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(14, 35, 77, 0.82);
  border: 1px solid var(--faq-line-light);
  border-radius: var(--radius-pill);
  padding: 8px 18px;
  max-width: 480px;
  margin-bottom: 24px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.page-faq .faq-hero__search:focus-within {
  border-color: rgba(57, 255, 20, 0.6);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.12);
}

.page-faq .faq-hero__search-icon {
  color: var(--faq-mint);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  flex-shrink: 0;
}

.page-faq .faq-hero__search-input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  color: var(--c-text);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  padding: 8px 0;
}

.page-faq .faq-hero__search-input::placeholder {
  color: rgba(154, 167, 189, 0.7);
}

.page-faq .faq-hero__search-input::-webkit-search-cancel-button {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: radial-gradient(circle, rgba(57, 255, 20, 0.6) 30%, transparent 32%);
  cursor: pointer;
}

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

.page-faq .faq-hero__tags .tag {
  background: rgba(14, 35, 77, 0.6);
  border: 1px solid var(--faq-line);
  color: var(--faq-dim);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.page-faq .faq-hero__tags .tag:hover {
  border-color: var(--faq-mint);
  color: var(--faq-mint);
  background: rgba(57, 255, 20, 0.06);
}

.page-faq .faq-hero__aside {
  display: flex;
  justify-content: flex-start;
}

.page-faq .faq-hero__card {
  position: relative;
  background: var(--grad-card);
  border-radius: var(--radius-lg);
  padding: 34px 30px 28px;
  min-width: 220px;
  max-width: 320px;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.page-faq .faq-hero__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--faq-orange), var(--faq-mint));
}

.page-faq .faq-hero__card::after {
  content: "?";
  position: absolute;
  right: -14px;
  bottom: -38px;
  font-family: var(--font-display);
  font-size: 9rem;
  font-weight: 900;
  color: rgba(255, 107, 53, 0.08);
  line-height: 1;
  pointer-events: none;
}

.page-faq .faq-hero__card-num {
  display: block;
  font-family: var(--font-display);
  font-size: 4.4rem;
  font-weight: 900;
  line-height: 1;
  color: var(--faq-orange);
  letter-spacing: -0.03em;
}

.page-faq .faq-hero__card-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--c-bg);
  margin-top: 6px;
}

.page-faq .faq-hero__card-rule {
  display: block;
  width: 48px;
  height: 3px;
  background: var(--faq-mint);
  border-radius: 4px;
  margin: 16px 0 12px;
}

.page-faq .faq-hero__card-sub {
  display: block;
  font-size: 0.8rem;
  color: var(--c-text-dim);
  margin-bottom: 18px;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}

.page-faq .faq-hero__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 24px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius-pill);
}

/* ===== 数据概览条 ===== */
.page-faq .faq-stats {
  position: relative;
  margin: 8px 0 0;
  background: rgba(6, 15, 43, 0.5);
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-stats::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background: linear-gradient(180deg, var(--faq-orange), transparent);
  pointer-events: none;
}

.page-faq .faq-stats__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.page-faq .faq-stats__item {
  padding: 22px 18px;
  border-right: 1px solid rgba(30, 58, 110, 0.5);
  border-bottom: 1px solid rgba(30, 58, 110, 0.5);
}

.page-faq .faq-stats__item:nth-child(even) {
  border-right: none;
}

.page-faq .faq-stats__item:nth-child(n + 3) {
  border-bottom: none;
}

.page-faq .faq-stats__num {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 900;
  color: var(--faq-mint);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.page-faq .faq-stats__label {
  display: block;
  font-size: 0.76rem;
  color: var(--faq-dim);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  margin-top: 6px;
}

/* ===== 通用章节 ===== */
.page-faq .faq-section {
  position: relative;
  padding: 48px 0 36px;
}

.page-faq .faq-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--faq-orange) 0%, var(--faq-line) 38%, transparent 38%);
  opacity: 0.55;
}

.page-faq .faq-section--sync::before {
  background: linear-gradient(90deg, var(--faq-mint) 0%, var(--faq-line) 38%, transparent 38%);
}

.page-faq .faq-section--fav::before {
  background: linear-gradient(90deg, var(--faq-orange) 0%, var(--faq-line) 38%, transparent 38%);
}

.page-faq .faq-section--data::before {
  background: linear-gradient(90deg, var(--faq-mint) 0%, var(--faq-line) 38%, transparent 38%);
}

.page-faq .faq-section__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-faq .faq-section__side {
  position: relative;
}

.page-faq .faq-section__num {
  display: block;
  font-family: var(--font-display);
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--faq-orange);
  margin-bottom: 12px;
}

.page-faq .faq-section--sync .faq-section__num {
  -webkit-text-stroke-color: var(--faq-mint);
}

.page-faq .faq-section--fav .faq-section__num {
  -webkit-text-stroke-color: var(--faq-orange);
}

.page-faq .faq-section--data .faq-section__num {
  -webkit-text-stroke-color: var(--faq-mint);
}

.page-faq .faq-section__title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 900;
  color: #fff;
  margin: 0 0 12px;
}

.page-faq .faq-section__desc {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--faq-dim);
  max-width: 340px;
  margin: 0 0 22px;
}

.page-faq .faq-section__more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--faq-orange);
  text-decoration: none;
  border: 1px solid rgba(255, 107, 53, 0.3);
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.page-faq .faq-section__more:hover {
  background: rgba(255, 107, 53, 0.1);
  border-color: var(--faq-orange);
}

.page-faq .faq-section--sync .faq-section__more,
.page-faq .faq-section--data .faq-section__more {
  color: var(--faq-mint);
  border-color: rgba(57, 255, 20, 0.35);
}

.page-faq .faq-section--sync .faq-section__more:hover,
.page-faq .faq-section--data .faq-section__more:hover {
  background: rgba(57, 255, 20, 0.08);
  border-color: var(--faq-mint);
}

.page-faq .faq-section__body {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ===== FAQ 折叠条目 ===== */
.page-faq .faq-item {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
  background: var(--faq-card);
  transition: border-color var(--transition), box-shadow var(--transition);
  overflow: hidden;
}

.page-faq .faq-item:hover {
  border-color: var(--faq-line-light);
}

.page-faq .faq-item:has(details[open]) {
  border-color: rgba(57, 255, 20, 0.35);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
  background: var(--faq-card-open);
}

.page-faq .faq-item__details {
  border: none;
  background: transparent;
}

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

.page-faq .faq-item__q {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  user-select: none;
  -webkit-user-select: none;
}

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

.page-faq .faq-item__q-icon {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  background: var(--faq-orange);
  color: #fff;
  border-radius: 6px;
  padding: 4px 8px;
  line-height: 1;
}

.page-faq .faq-section--sync .faq-item__q-icon,
.page-faq .faq-section--data .faq-item__q-icon {
  background: var(--faq-mint);
  color: var(--c-bg);
}

.page-faq .faq-item__q-text {
  flex: 1;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--c-text);
  line-height: 1.5;
}

.page-faq .faq-item__q-toggle {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid rgba(57, 255, 20, 0.4);
  color: var(--faq-mint);
  position: relative;
  transition: transform var(--transition), background var(--transition);
}

.page-faq .faq-item__q-toggle::before,
.page-faq .faq-item__q-toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: currentColor;
  border-radius: 2px;
}

.page-faq .faq-item__q-toggle::before {
  width: 10px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__q-toggle::after {
  width: 2px;
  height: 10px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__details[open] .faq-item__q-toggle {
  transform: rotate(45deg);
  background: rgba(57, 255, 20, 0.1);
}

.page-faq .faq-item__a {
  margin: 0 12px 12px;
  padding: 18px 20px;
  background: var(--faq-a-bg);
  border-radius: var(--radius-md);
  border-top: 1px dashed rgba(57, 255, 20, 0.22);
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--c-text);
}

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

.page-faq .faq-item__a-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px solid rgba(30, 58, 110, 0.6);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--faq-dim);
  letter-spacing: 0.04em;
}

.page-faq .faq-item__a-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.page-faq .faq-item__a-meta span::before {
  content: "∷";
  color: var(--faq-mint);
  opacity: 0.6;
}

/* ===== 图片区域 ===== */
.page-faq .faq-section__imgwrap {
  position: relative;
  margin-top: 8px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.page-faq .faq-section__imgwrap::before {
  content: "LANG / 简体版切换";
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: #fff;
  background: rgba(6, 15, 43, 0.72);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(57, 255, 20, 0.3);
  pointer-events: none;
}

.page-faq .faq-section--fav .faq-section__imgwrap::before {
  content: "FAV / 收藏拖拽排序";
  border-color: rgba(255, 107, 53, 0.4);
}

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

/* ===== 底部帮助区 ===== */
.page-faq .faq-help {
  margin-top: 24px;
  padding: 52px 0 60px;
  position: relative;
  background: linear-gradient(120deg, rgba(255, 107, 53, 0.2), rgba(6, 15, 43, 0.85) 60%);
  border-top: 1px solid rgba(255, 107, 53, 0.3);
  overflow: hidden;
}

.page-faq .faq-help::before {
  content: "?";
  position: absolute;
  right: -20px;
  bottom: -80px;
  font-family: var(--font-display);
  font-size: 12rem;
  font-weight: 900;
  color: rgba(57, 255, 20, 0.06);
  line-height: 1;
  pointer-events: none;
}

.page-faq .faq-help__inner {
  display: flex;
  flex-direction: column;
  gap: 28px;
  align-items: flex-start;
  position: relative;
  z-index: 1;
}

.page-faq .faq-help__text h2 {
  font-family: var(--font-display);
  font-size: 2.1rem;
  font-weight: 900;
  color: #fff;
  margin: 0 0 14px;
}

.page-faq .faq-help__text p {
  color: var(--faq-dim);
  max-width: 520px;
  line-height: 1.8;
  font-size: 0.94rem;
  margin: 0;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ===== 桌面端适配 ===== */
@media (min-width: 992px) {
  .page-faq .faq-hero {
    padding: 64px 0 48px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 1.5fr 0.85fr;
    gap: 44px;
  }

  .page-faq .faq-hero__aside {
    justify-content: flex-end;
    padding-bottom: 16px;
  }

  .page-faq .faq-stats__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-faq .faq-stats__item {
    border-bottom: none;
    border-right: 1px solid rgba(30, 58, 110, 0.5);
    padding: 26px 28px;
  }

  .page-faq .faq-stats__item:nth-child(even) {
    border-right: 1px solid rgba(30, 58, 110, 0.5);
  }

  .page-faq .faq-stats__item:last-child {
    border-right: none;
  }

  .page-faq .faq-section {
    padding: 72px 0 64px;
  }

  .page-faq .faq-section__grid {
    grid-template-columns: 340px 1fr;
    gap: 48px;
  }

  .page-faq .faq-section__side {
    position: sticky;
    top: 140px;
    align-self: start;
    padding-top: 8px;
  }

  .page-faq .faq-section__num {
    font-size: 4.4rem;
  }

  .page-faq .faq-section__title {
    font-size: 2.05rem;
  }

  .page-faq .faq-section__imgwrap {
    margin-top: 8px;
  }

  .page-faq .faq-help {
    padding: 68px 0 76px;
  }

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

  .page-faq .faq-help__actions {
    flex-shrink: 0;
  }
}

/* ===== 降低动效偏好 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
    animation: none !important;
  }
}