.page-faq {
  --faq-hair: rgba(11, 20, 24, 0.14);
  --faq-hair-soft: rgba(11, 20, 24, 0.08);
  --faq-ink-soft: rgba(11, 20, 24, 0.72);
  --faq-num: 22px;
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--abyss-900);
  color: var(--paper-50);
  padding: 26px 0 52px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 52px 52px;
  pointer-events: none;
}

.page-faq .faq-hero__slant {
  position: absolute;
  left: -6%;
  right: -6%;
  bottom: -1px;
  height: 92px;
  background: linear-gradient(180deg, rgba(53, 224, 214, 0) 0%, rgba(53, 224, 214, 0.07) 100%);
  clip-path: polygon(0 100%, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

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

.page-faq .faq-hero .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--stone-400);
  margin-bottom: 22px;
}

.page-faq .faq-hero .breadcrumb a {
  color: var(--stone-400);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumb a:hover {
  color: var(--neon-400);
}

.page-faq .faq-hero .breadcrumb__sep {
  margin: 0 8px;
  color: var(--neon-600);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 30px;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--neon-400);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(30px, 7vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--paper-50);
}

.page-faq .faq-hero .lead {
  margin: 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(243, 241, 234, 0.8);
}

.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 34px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--hair);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-size: var(--faq-num);
  font-weight: 500;
  line-height: 1;
  color: var(--neon-400);
}

.page-faq .faq-stat__label {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--stone-400);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--hair);
  background: var(--abyss-700);
}

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

/* ============ 主题跳转带 ============ */
.page-faq .faq-jump-bar {
  background: var(--abyss-950);
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
  padding: 16px 0 14px;
}

.page-faq .faq-jump__cap {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--stone-400);
}

.page-faq .faq-jump {
  display: flex;
  gap: 10px;
  margin: 12px 0 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--hair);
  color: var(--paper-50);
  font-size: 14px;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--neon-line);
  color: var(--neon-400);
}

.page-faq .faq-jump__code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--neon-600);
}

.page-faq .faq-jump__link:hover .faq-jump__code {
  color: var(--neon-400);
}

/* ============ 纸张问答区 ============ */
.page-faq .faq-qa {
  background: var(--paper-50);
  color: var(--ink-900);
  padding: 40px 0 52px;
}

.page-faq .faq-block {
  padding: 26px 0 10px;
}

.page-faq .faq-block + .faq-block {
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-block__code {
  display: inline-block;
  margin: 0;
  padding: 3px 10px;
  border: 1px solid rgba(11, 20, 24, 0.28);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ink-900);
}

.page-faq .faq-block__title {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(21px, 4.6vw, 28px);
  line-height: 1.26;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--ink-900);
}

.page-faq .faq-block__intro {
  margin: 0;
  max-width: 40ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-ink-soft);
}

.page-faq .faq-list {
  margin-top: 20px;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-item:first-child {
  border-top: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-item__q {
  position: relative;
  display: block;
  padding: 16px 34px 16px 22px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: rgba(11, 20, 24, 0.18);
  transition: background 200ms var(--ease);
}

.page-faq .faq-item[open] > .faq-item__q::before {
  background: var(--neon-600);
}

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 8px;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: rgba(11, 20, 24, 0.45);
}

.page-faq .faq-item[open] > .faq-item__q::after {
  content: "\2212";
  color: var(--neon-600);
}

.page-faq .faq-item__q h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink-900);
}

.page-faq .faq-item__q:hover h3 {
  color: #0b5f59;
}

.page-faq .faq-item__a {
  padding: 0 34px 20px 22px;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--faq-ink-soft);
}

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

.page-faq .faq-item__a a {
  color: #0b6b62;
  text-decoration: none;
  border-bottom: 1px solid rgba(18, 167, 156, 0.5);
}

.page-faq .faq-item__a a:hover {
  border-bottom-color: var(--neon-600);
}

.page-faq .faq-copy {
  display: inline-block;
  margin: 0 2px;
  padding: 2px 8px;
  border: 1px dashed rgba(18, 167, 156, 0.65);
  background: rgba(18, 167, 156, 0.08);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: #0b6b62;
  cursor: pointer;
  border-radius: 0;
  transition: background 160ms var(--ease), color 160ms var(--ease);
}

.page-faq .faq-copy:hover {
  background: rgba(18, 167, 156, 0.18);
  color: #07443f;
}

.page-faq .faq-figure {
  margin: 24px 0 4px;
  border: 1px solid rgba(11, 20, 24, 0.18);
  background: rgba(11, 20, 24, 0.04);
}

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

.page-faq .faq-figure__cap {
  padding: 10px 14px;
  border-top: 1px solid rgba(11, 20, 24, 0.14);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: var(--faq-ink-soft);
}

/* ============ 人工协助区 ============ */
.page-faq .faq-help {
  background: var(--abyss-950);
  color: var(--paper-50);
  border-top: 1px solid var(--neon-line);
  padding: 44px 0 56px;
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-help__code {
  display: inline-block;
  margin: 0 0 14px;
  padding: 3px 10px;
  border: 1px solid var(--neon-line);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--neon-400);
}

.page-faq .faq-help__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(23px, 5vw, 32px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--paper-50);
}

.page-faq .faq-help__lead {
  margin: 0;
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(243, 241, 234, 0.78);
}

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

.page-faq .faq-help__list li {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--hair);
}

.page-faq .faq-help__list li:last-child {
  border-bottom: 1px solid var(--hair);
}

.page-faq .faq-help__mark {
  padding-top: 2px;
  font-size: 13px;
  color: var(--amber-400);
}

.page-faq .faq-help__item strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper-50);
}

.page-faq .faq-help__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(243, 241, 234, 0.68);
}

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

/* ============ 响应式 ============ */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 44px 0 72px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-hero__figure {
    transform: translateY(14px);
  }

  .page-faq .faq-jump {
    overflow-x: visible;
    flex-wrap: wrap;
  }

  .page-faq .faq-qa {
    padding: 56px 0 72px;
  }

  .page-faq .faq-block {
    display: grid;
    grid-template-columns: 262px 1fr;
    gap: 48px;
    align-items: start;
    padding: 46px 0 16px;
  }

  .page-faq .faq-block:first-child {
    padding-top: 12px;
  }

  .page-faq .faq-block__head {
    position: sticky;
    top: 28px;
  }

  .page-faq .faq-list {
    margin-top: 0;
  }

  .page-faq .faq-item__q {
    padding: 18px 40px 18px 26px;
  }

  .page-faq .faq-item__a {
    padding: 0 40px 22px 26px;
  }

  .page-faq .faq-help {
    padding: 60px 0 72px;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 56px;
  }
}
<<<END>>>