.page-faq {
  --faq-midnight-deep: #070A18;
  --faq-gold-soft: #C9A23D;
  --faq-neon-soft: #9B4DFF;
  --faq-cyan-line: #00E5FF;
  --faq-card-border: rgba(255, 255, 255, 0.08);
  --faq-panel-bg: rgba(11, 16, 38, 0.72);
  --faq-text-secondary: #A99FAD;
  --faq-serif: "Noto Serif SC", "Songti SC", serif;
  --faq-sans: "Noto Sans SC", "PingFang SC", sans-serif;
  --faq-mono: "Source Code Pro", "SFMono-Regular", monospace;
  color: #F2EDE9;
  background-color: transparent;
  position: relative;
  font-family: var(--faq-sans);
  line-height: 1.75;
  min-height: 100%;
  padding: 0;
  letter-spacing: 0.01em;
}

.page-faq a {
  color: var(--faq-neon-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(155, 77, 255, 0.3);
  transition: border-color 0.3s ease, color 0.3s ease;
}

.page-faq a:hover {
  color: var(--faq-gold-soft);
  border-color: var(--faq-gold-soft);
}

.faq-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 16px;
  position: relative;
}

.faq-sidebar {
  width: 100%;
  padding: 40px 0 16px;
}

.faq-sidebar-inner {
  position: sticky;
  top: 80px;
}

.faq-intro {
  position: relative;
  padding: 32px 24px 24px;
  background:
    linear-gradient(135deg, rgba(30, 18, 64, 0.65) 0%, rgba(11, 16, 38, 0.85) 100%),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.015) 0px, rgba(255, 255, 255, 0.015) 1px, transparent 1px, transparent 12px);
  border-left: 3px solid var(--faq-gold-soft);
  border-radius: 2px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.faq-intro::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 40%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--faq-neon-soft), transparent);
}

.faq-kicker {
  display: inline-block;
  font-family: var(--faq-mono);
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--faq-gold-soft);
  margin-bottom: 12px;
  padding: 2px 10px;
  border: 1px solid rgba(201, 162, 61, 0.35);
  border-radius: 2px;
}

.faq-title {
  font-family: var(--faq-serif);
  font-weight: 900;
  font-size: clamp(1.6rem, 4.5vw, 2.4rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  color: #F2EDE9;
  text-shadow: 0 0 40px rgba(155, 77, 255, 0.2);
}

.faq-description {
  font-size: 13px;
  line-height: 1.7;
  color: var(--faq-text-secondary);
  margin: 0 0 20px;
}

.faq-img-frame {
  border-radius: 2px;
  overflow: hidden;
  border: 1px solid var(--faq-card-border);
  margin-bottom: 24px;
  background: #0B1026;
}

.faq-img-top {
  width: 100%;
  height: auto;
  display: block;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 2 / 1;
}

.faq-toc {
  padding: 20px 0 0;
}

.faq-toc-title {
  font-family: var(--faq-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--faq-cyan-line);
  margin: 0 0 14px;
  padding-left: 12px;
  position: relative;
}

.faq-toc-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 4px;
  height: 4px;
  background: var(--faq-cyan-line);
  border-radius: 50%;
  transform: translateY(-50%);
}

.faq-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid rgba(255, 255, 255, 0.08);
}

.faq-toc-list li {
  margin: 0;
  position: relative;
}

.toc-link {
  display: block;
  padding: 9px 12px;
  font-size: 14px;
  font-weight: 500;
  color: #F2EDE9;
  border: none;
  transition: all 0.3s ease;
  border-left: 2px solid transparent;
  margin-left: -1px;
}

.toc-link:hover {
  color: var(--faq-gold-soft);
  border-left-color: var(--faq-gold-soft);
  padding-left: 16px;
}

.faq-content {
  flex: 1;
  padding: 0 0 60px;
  min-width: 0;
  position: relative;
}

.faq-search-box {
  position: relative;
  margin: 40px 0 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  transition: border-color 0.4s ease;
}

.faq-search-box:focus-within {
  border-color: var(--faq-gold-soft);
}

.faq-search-icon {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--faq-gold-soft);
  padding: 0 12px;
  line-height: 1;
  font-family: var(--faq-mono);
}

.faq-search-input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: #F2EDE9;
  font-family: var(--faq-sans);
  font-size: 16px;
  padding: 14px 16px 14px 44px;
  box-sizing: border-box;
  caret-color: var(--faq-cyan-line);
}

.faq-search-input::placeholder {
  color: rgba(169, 159, 173, 0.6);
}

.faq-section {
  margin-bottom: 56px;
  scroll-margin-top: 90px;
}

.faq-section-head {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding-bottom: 16px;
  position: relative;
}

.faq-section-head::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--faq-gold-soft) 0%, rgba(201, 162, 61, 0.2) 30%, transparent 80%);
}

.faq-section-num {
  font-family: var(--faq-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--faq-gold-soft);
  letter-spacing: -0.04em;
  opacity: 0.75;
  padding-top: 4px;
}

.faq-section-title {
  font-family: var(--faq-serif);
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 0 0 4px;
  color: #F2EDE9;
}

.faq-section-sub {
  font-size: 13px;
  color: var(--faq-text-secondary);
  margin: 0;
}

.faq-group {
  border: none;
}

.faq-item {
  position: relative;
  background: var(--faq-panel-bg);
  border: 1px solid var(--faq-card-border);
  margin-bottom: 12px;
  border-radius: 2px;
  transition: border-color 0.4s ease, box-shadow 0.4s ease, background 0.4s ease;
  overflow: hidden;
}

.faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: transparent;
  transition: background 0.4s ease;
  z-index: 1;
}

.faq-item[open] {
  border-color: rgba(201, 162, 61, 0.3);
  background: rgba(11, 16, 38, 0.9);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.faq-item[open]::before {
  background: linear-gradient(180deg, var(--faq-gold-soft) 0%, var(--faq-neon-soft) 100%);
}

.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px 18px 22px;
  cursor: pointer;
  user-select: none;
  position: relative;
}

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

.faq-item summary:focus-visible {
  outline: 2px solid var(--faq-cyan-line);
  outline-offset: -2px;
}

.faq-item-q {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
  color: #F2EDE9;
  transition: color 0.3s ease;
  max-width: calc(100% - 40px);
}

.faq-item[open] .faq-item-q {
  color: var(--faq-gold-soft);
}

.faq-item-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: 1px solid rgba(155, 77, 255, 0.4);
  border-radius: 2px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-family: var(--faq-mono);
  color: var(--faq-neon-soft);
  transition: transform 0.4s var(--ease), color 0.4s ease, border-color 0.4s ease, background 0.4s ease;
  line-height: 1;
}

.faq-item[open] .faq-item-icon {
  transform: rotate(45deg);
  color: var(--faq-gold-soft);
  border-color: var(--faq-gold-soft);
  background: rgba(201, 162, 61, 0.08);
}

.faq-item-a {
  padding: 0 22px 20px 22px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 237, 233, 0.8);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 2px;
  padding-top: 16px;
}

.faq-item-a::before {
  content: "▍";
  color: var(--faq-cyan-line);
  margin-right: 8px;
  font-family: var(--faq-mono);
  font-size: 13px;
}

.faq-item-a p {
  display: inline;
  margin: 0;
}

.faq-link {
  font-weight: 500;
  color: var(--faq-neon-soft);
  border-bottom: 1px solid rgba(155, 77, 255, 0.3);
  transition: all 0.3s ease;
  padding-bottom: 1px;
}

.faq-link:hover {
  color: var(--faq-gold-soft);
  border-bottom-color: var(--faq-gold-soft);
}

.faq-decor-img {
  position: relative;
  height: 140px;
  margin-top: 24px;
  border-radius: 2px;
  overflow: hidden;
  border: 1px solid var(--faq-card-border);
  background: linear-gradient(180deg, var(--faq-midnight-deep) 0%, rgba(30, 18, 64, 0.4) 100%);
}

.faq-img-decor {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.75;
  filter: saturate(0.7);
}

@media (min-width: 768px) {
  .faq-wrapper {
    padding: 0 36px;
  }

  .faq-title {
    font-size: clamp(2rem, 4.5vw, 3.4rem);
  }

  .faq-description {
    font-size: 14px;
  }

  .faq-search-box {
    margin-top: 44px;
  }

  .faq-item-q {
    font-size: 16px;
  }

  .faq-item-a {
    font-size: 14.5px;
  }

  .faq-section-head {
    gap: 22px;
  }

  .faq-section-num {
    font-size: 30px;
  }
}

@media (min-width: 1024px) {
  .faq-wrapper {
    flex-direction: row;
    gap: 56px;
    padding: 40px 48px 0;
  }

  .faq-sidebar {
    width: 320px;
    flex-shrink: 0;
    padding: 0;
  }

  .faq-content {
    padding: 0 0 60px;
    width: calc(100% - 320px);
  }

  .faq-search-box {
    margin: 8px 0 44px;
  }

  .faq-intro {
    padding: 36px 28px 28px;
  }

  .faq-section {
    margin-bottom: 64px;
  }

  .faq-decor-img {
    height: 160px;
    margin-top: 16px;
  }
}

@media (min-width: 1280px) {
  .faq-wrapper {
    gap: 72px;
    padding: 48px 64px 0;
  }

  .faq-sidebar {
    width: 340px;
  }

  .faq-content {
    width: calc(100% - 340px);
  }

  .faq-toc-list {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
    animation: none !important;
  }
}