.page-faq {
  --faq-max: 1180px;
  --faq-pad: 14px;
  --faq-cut: 20px;
  background: var(--bb-ink);
  color: var(--bb-paper);
  font-family: var(--bb-font-body);
  padding: 0 var(--faq-pad) 76px;
}

.page-faq > * {
  max-width: var(--faq-max);
  margin-inline: auto;
}

.page-faq .faq-crumb {
  padding: 18px 0 0;
  font-family: var(--bb-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--bb-muted);
}

.page-faq .faq-crumb a {
  color: var(--bb-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--bb-line);
}

.page-faq .faq-crumb a:hover {
  color: var(--bb-lime);
  border-color: var(--bb-lime);
}

.page-faq .faq-crumb span[aria-hidden] {
  margin: 0 6px;
  color: var(--bb-line);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  margin-top: 16px;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: 22px;
  padding: 28px 18px 26px;
  background:
    radial-gradient(96% 72% at 100% 0%, rgba(97, 230, 195, 0.16), transparent 62%),
    radial-gradient(80% 60% at 0% 100%, rgba(198, 255, 61, 0.1), transparent 58%),
    linear-gradient(168deg, #12211c 0%, #0b1412 100%);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, var(--faq-cut) 100%, 0 calc(100% - var(--faq-cut)));
}

.page-faq .faq-hero__grid::before {
  content: "";
  position: absolute;
  inset: 10px;
  border-top: 1px solid rgba(198, 255, 61, 0.32);
  border-left: 1px solid rgba(198, 255, 61, 0.32);
  pointer-events: none;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 10px;
  font-family: var(--bb-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--bb-lime);
  text-transform: uppercase;
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--bb-font-display);
  font-size: clamp(30px, 8.4vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--bb-white);
}

.page-faq .faq-hero__lede {
  margin: 16px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--bb-paper);
}

.page-faq .faq-quick {
  margin-top: 24px;
  border-top: 1px solid var(--bb-line);
  padding-top: 14px;
}

.page-faq .faq-quick__label {
  margin: 0 0 10px;
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--bb-muted);
}

.page-faq .faq-quick__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-quick__list a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  background: rgba(23, 40, 34, 0.78);
  border-left: 2px solid var(--bb-lime);
  color: var(--bb-paper);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  transition: background 0.25s var(--bb-ease), transform 0.25s var(--bb-ease);
}

.page-faq .faq-quick__list a:hover {
  background: rgba(198, 255, 61, 0.12);
  transform: translateX(2px);
}

.page-faq .faq-quick__num {
  font-family: var(--bb-font-mono);
  font-size: 12px;
  color: var(--bb-lime);
  flex-shrink: 0;
}

.page-faq .faq-hero__media {
  margin: 0;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 2px;
  filter: grayscale(0.35) contrast(1.05);
}

.page-faq .faq-hero__media .bb-media__caption {
  display: block;
  margin-top: 8px;
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--bb-muted);
}

/* ---------- 目录与主体 ---------- */

.page-faq .faq-body {
  display: grid;
  gap: 26px;
  margin-top: 40px;
}

.page-faq .faq-toc {
  border-top: 1px solid var(--bb-line);
  padding-top: 12px;
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--bb-muted);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-faq .faq-toc__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--bb-line);
  color: var(--bb-paper);
  text-decoration: none;
  font-size: 13px;
  transition: border-color 0.2s var(--bb-ease), color 0.2s var(--bb-ease);
}

.page-faq .faq-toc__list a:hover {
  border-color: var(--bb-lime);
  color: var(--bb-lime);
}

.page-faq .faq-toc__num {
  font-family: var(--bb-font-mono);
  font-size: 11px;
  color: var(--bb-lime);
}

.page-faq .faq-toc__top {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--bb-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--bb-line);
}

.page-faq .faq-toc__top:hover {
  color: var(--bb-lime);
  border-color: var(--bb-lime);
}

.page-faq .faq-main {
  min-width: 0;
}

/* ---------- 问题分组 ---------- */

.page-faq .faq-group {
  margin-bottom: 44px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin-bottom: 16px;
}

.page-faq .faq-group__num {
  font-family: var(--bb-font-mono);
  font-size: 26px;
  line-height: 1;
  color: var(--bb-lime);
  letter-spacing: -0.02em;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--bb-font-display);
  font-size: clamp(21px, 4.8vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--bb-white);
}

.page-faq .faq-group__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--bb-muted);
  max-width: 40em;
}

/* ---------- 折叠面板 ---------- */

.page-faq .bb-accordion__item {
  margin-bottom: 10px;
  border: 1px solid var(--bb-line);
  background: var(--bb-ink-2);
  transition: border-color 0.25s var(--bb-ease);
}

.page-faq .bb-accordion__item[data-open] {
  border-color: rgba(198, 255, 61, 0.4);
}

.page-faq .bb-accordion__trigger {
  display: flex;
  align-items: baseline;
  gap: 12px;
  width: 100%;
  padding: 14px 14px;
  background: transparent;
  border: 0;
  color: var(--bb-paper);
  font-family: var(--bb-font-body);
  font-size: 15px;
  line-height: 1.5;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.page-faq .bb-accordion__trigger:hover {
  color: var(--bb-lime);
}

.page-faq .faq-q__num {
  flex-shrink: 0;
  font-family: var(--bb-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--bb-lime);
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-q__mark {
  position: relative;
  flex-shrink: 0;
  width: 12px;
  height: 12px;
  margin-top: 5px;
  border-right: 2px solid var(--bb-muted);
  border-bottom: 2px solid var(--bb-muted);
  transform: rotate(45deg);
  transition: transform 0.25s var(--bb-ease), border-color 0.25s var(--bb-ease);
}

.page-faq .bb-accordion__item[data-open] .faq-q__mark {
  transform: rotate(-135deg);
  border-color: var(--bb-lime);
}

.page-faq .bb-accordion__panel {
  margin-left: 14px;
  padding: 2px 14px 16px 14px;
  border-left: 2px solid var(--bb-lime);
}

.page-faq .bb-accordion__panel p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--bb-paper);
  max-width: 40em;
}

.page-faq .bb-accordion__item:not([data-open]) .bb-accordion__panel {
  display: none;
}

/* ---------- 同步章节的图 ---------- */

.page-faq .faq-sync__layout {
  display: grid;
  gap: 20px;
}

.page-faq .faq-sync__media {
  margin: 0;
}

.page-faq .faq-sync__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--bb-line);
  filter: grayscale(0.5) contrast(1.08);
}

.page-faq .faq-sync__media .bb-media__caption {
  display: block;
  margin-top: 8px;
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--bb-amber);
}

/* ---------- 速查卡 ---------- */

.page-faq .faq-steps {
  margin-top: 8px;
  padding-top: 26px;
  border-top: 1px solid var(--bb-line);
}

.page-faq .faq-steps__head {
  margin-bottom: 22px;
}

.page-faq .faq-steps__head .bb-eyebrow {
  margin: 0 0 8px;
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--bb-lime);
}

.page-faq .faq-steps__title {
  margin: 0;
  font-family: var(--bb-font-display);
  font-size: clamp(20px, 4.6vw, 28px);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--bb-white);
}

.page-faq .faq-steps__track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  position: relative;
}

.page-faq .faq-step-card {
  position: relative;
  padding: 18px 16px 16px;
  background: linear-gradient(160deg, var(--bb-panel) 0%, var(--bb-ink-2) 100%);
  border: 1px solid var(--bb-line);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-faq .faq-step-card__tag {
  margin: 0 0 8px;
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--bb-lime);
}

.page-faq .faq-step-card__title {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.45;
  font-weight: 700;
  color: var(--bb-white);
}

.page-faq .faq-step-card__list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
  display: grid;
  gap: 8px;
}

.page-faq .faq-step-card__list li {
  position: relative;
  padding-left: 26px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--bb-paper);
  counter-increment: faqstep;
}

.page-faq .faq-step-card__list li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--bb-font-mono);
  font-size: 11px;
  color: var(--bb-lime-deep);
}

.page-faq .faq-step-card__link {
  font-size: 13px;
}

.page-faq .faq-steps__foot {
  margin: 24px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--bb-muted);
  max-width: 46em;
}

.page-faq .faq-steps__foot a {
  color: var(--bb-lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.4);
}

.page-faq .faq-steps__foot a:hover {
  border-color: var(--bb-lime);
}

/* ---------- 桌面 ---------- */

@media (min-width: 720px) {
  .page-faq {
    --faq-pad: 24px;
  }

  .page-faq .faq-hero__grid {
    padding: 38px 34px 34px;
    gap: 30px;
  }

  .page-faq .faq-hero__lede {
    font-size: 16px;
  }

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

  .page-faq .bb-accordion__trigger {
    padding: 16px 18px;
    font-size: 16px;
  }

  .page-faq .bb-accordion__panel {
    margin-left: 18px;
    padding: 2px 20px 18px 20px;
  }

  .page-faq .bb-accordion__panel p {
    font-size: 15px;
  }

  .page-faq .faq-steps__track {
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
  }

  .page-faq .faq-body {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-toc__list {
    display: grid;
    gap: 4px;
  }

  .page-faq .faq-toc__list a {
    display: flex;
    border-color: transparent;
    border-left: 2px solid var(--bb-line);
    padding: 7px 10px;
  }

  .page-faq .faq-toc__list a:hover {
    border-left-color: var(--bb-lime);
    border-top-color: transparent;
    border-right-color: transparent;
    border-bottom-color: transparent;
  }

  .page-faq .faq-sync__layout {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 28px;
    align-items: start;
  }

  .page-faq .faq-steps__track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-steps__track::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 24px;
    height: 1px;
    background: repeating-linear-gradient(90deg, var(--bb-line) 0 10px, transparent 10px 18px);
    pointer-events: none;
  }

  .page-faq .faq-step-card {
    z-index: 1;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hero__grid {
    padding: 48px 44px 44px;
  }

  .page-faq .faq-body {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 60px;
  }
}
<<<END>>>