.page-faq {
  --faq-rail: 236px;
  --faq-gap: clamp(24px, 3vw, 48px);
  color: var(--bs-text);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: clip;
}

.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--bs-muted);
}

.page-faq .breadcrumbs li {
  display: inline-flex;
  align-items: center;
}

.page-faq .breadcrumbs li::after {
  content: "/";
  margin-left: 8px;
  color: var(--bs-line);
}

.page-faq .breadcrumbs li:last-child::after {
  content: "";
}

.page-faq .breadcrumbs a {
  color: var(--bs-muted);
  text-decoration: none;
}

.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--bs-action);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(24px, 4vw, 48px) 0 clamp(34px, 5vw, 70px);
  background:
    radial-gradient(120% 90% at 88% 4%, rgba(22, 62, 99, 0.9) 0%, rgba(10, 26, 47, 0) 58%),
    linear-gradient(160deg, var(--bs-ink) 0%, var(--bs-night) 66%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -22%;
  bottom: -58%;
  left: 32%;
  height: 128%;
  transform: rotate(-9deg);
  background: linear-gradient(115deg, rgba(198, 255, 61, 0.16) 0%, rgba(198, 255, 61, 0) 62%);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 3.5vw, 44px);
  align-items: center;
}

.page-faq .eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bs-action);
}

.page-faq h1 {
  margin: 0 0 18px;
  max-width: 620px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5.2vw, 3.8rem);
  line-height: 1.06;
  letter-spacing: -0.04em;
  color: var(--bs-text);
}

.page-faq .faq-hero-lede {
  margin: 0;
  max-width: 54ch;
  font-size: var(--fs-body);
  color: var(--bs-muted);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 2.6vw, 28px);
}

.page-faq .faq-hero-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(22px, 3vw, 32px);
  padding-top: clamp(16px, 2vw, 22px);
  border-top: 1px solid var(--bs-line);
}

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

.page-faq .faq-stat-num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(1.25rem, 2.2vw, 1.65rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--bs-action);
}

.page-faq .faq-stat--data .faq-stat-num {
  color: var(--bs-data);
}

.page-faq .faq-stat-label {
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--bs-muted);
}

.page-faq .faq-hero-media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--bs-line);
  border-radius: 4px 32px 4px 32px;
  background: var(--bs-panel);
  box-shadow: 0 26px 60px -32px rgba(0, 0, 0, 0.95);
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-faq .faq-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(10, 26, 47, 0) 42%, rgba(6, 17, 29, 0.6) 100%);
  pointer-events: none;
}

/* ---------- 主体双栏 ---------- */

.page-faq .faq-body {
  padding: clamp(30px, 5vw, 70px) 0 clamp(38px, 6vw, 78px);
  background: var(--bs-night);
}

.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-index {
  padding: 18px 16px;
  border: 1px solid var(--bs-line);
  border-radius: var(--radius-cut);
  background: linear-gradient(155deg, rgba(16, 42, 70, 0.92), rgba(10, 26, 47, 0.5));
}

.page-faq .faq-index-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--bs-muted);
}

.page-faq .faq-index-list {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 10px 10px;
  border-left: 2px solid transparent;
  border-radius: 4px 12px 4px 12px;
  color: var(--bs-text);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  border-left-color: var(--bs-action);
  background: rgba(198, 255, 61, 0.1);
  color: var(--bs-action);
}

.page-faq .faq-index-num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--bs-muted);
}

.page-faq .faq-index-count {
  padding: 1px 8px;
  border: 1px solid var(--bs-line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--bs-muted);
}

.page-faq .faq-index-tip {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--bs-line);
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--bs-muted);
}

/* ---------- 问答分组 ---------- */

.page-faq .faq-groups {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-faq .faq-group {
  scroll-margin-top: 84px;
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 14px;
  align-items: start;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--bs-line);
}

.page-faq .faq-group-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(198, 255, 61, 0.32);
  border-radius: 14px 4px 14px 4px;
  background: rgba(198, 255, 61, 0.1);
  color: var(--bs-action);
}

.page-faq .faq-group-icon svg {
  display: block;
  width: 22px;
  height: 22px;
}

.page-faq .faq-group-title {
  margin: 0 0 5px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.3rem, 2.1vw, 1.7rem);
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--bs-text);
}

.page-faq .faq-group-lede {
  margin: 0;
  max-width: 52ch;
  font-size: 0.92rem;
  color: var(--bs-muted);
}

.page-faq .faq-list {
  display: grid;
  gap: 2px;
  margin-top: 8px;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--bs-line);
  border-radius: 4px 16px 4px 16px;
  transition: background 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.page-faq .faq-item[open] {
  border-bottom-color: rgba(198, 255, 61, 0.3);
  background: linear-gradient(180deg, rgba(198, 255, 61, 0.075), rgba(198, 255, 61, 0) 80%);
  box-shadow: inset 0 0 0 1px rgba(198, 255, 61, 0.16);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 16px 16px 14px;
  list-style: none;
  cursor: pointer;
  font-weight: 700;
  font-size: clamp(0.98rem, 1.1vw, 1.08rem);
  line-height: 1.5;
  color: var(--bs-text);
}

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

.page-faq .faq-item summary::before {
  content: "";
  flex: none;
  align-self: stretch;
  width: 3px;
  min-height: 1.3em;
  border-radius: 2px;
  background: var(--bs-line);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .faq-item[open] summary::before {
  background: var(--bs-action);
  box-shadow: 0 0 14px rgba(198, 255, 61, 0.55);
}

.page-faq .faq-item summary::after {
  content: "+";
  flex: none;
  margin-left: auto;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1.35;
  color: var(--bs-muted);
  transition: color 0.2s ease;
}

.page-faq .faq-item[open] summary::after {
  content: "\2212";
  color: var(--bs-action);
}

.page-faq .faq-item summary:hover {
  color: var(--bs-action);
}

.page-faq .faq-answer {
  padding: 0 18px 18px 29px;
  font-size: clamp(0.9rem, 1vw, 0.98rem);
  line-height: 1.8;
  color: var(--bs-muted);
}

.page-faq .faq-answer p {
  margin: 0 0 0.65em;
}

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

.page-faq .faq-key {
  display: inline-block;
  margin: 0 0.1em;
  padding: 0 0.38em;
  border: 1px solid var(--bs-line);
  border-radius: 3px;
  background: rgba(22, 62, 99, 0.7);
  font-family: var(--font-mono);
  font-size: 0.84em;
  line-height: 1.6;
  color: var(--bs-text);
}

.page-faq .faq-answer a {
  color: var(--bs-action);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-answer a:hover,
.page-faq .faq-answer a:focus-visible {
  color: var(--bs-text);
}

.page-faq .faq-side {
  margin: 22px 0 0;
  max-width: 460px;
  overflow: hidden;
  border: 1px solid var(--bs-line);
  border-radius: 4px 26px 4px 26px;
  background: var(--bs-panel);
}

.page-faq .faq-side img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-faq .faq-side .media-caption {
  padding: 10px 14px 12px;
  border-top: 1px solid var(--bs-line);
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--bs-muted);
}

/* ---------- 结尾通道 ---------- */

.page-faq .faq-outro {
  padding: clamp(32px, 5vw, 62px) 0 clamp(44px, 6vw, 76px);
  border-top: 1px solid var(--bs-line);
  background: linear-gradient(180deg, var(--bs-night) 0%, var(--bs-ink) 100%);
}

.page-faq .faq-outro-inner {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}

.page-faq .faq-outro h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  line-height: 1.16;
  letter-spacing: -0.03em;
  color: var(--bs-text);
}

.page-faq .faq-outro p {
  margin: 0;
  max-width: 46ch;
  font-size: 0.95rem;
  color: var(--bs-muted);
}

.page-faq .faq-outro-links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-outro-links a {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 12px 14px;
  border-left: 2px solid var(--bs-line);
  color: var(--bs-text);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.page-faq .faq-outro-links a span {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--bs-muted);
}

.page-faq .faq-outro-links a:hover,
.page-faq .faq-outro-links a:focus-visible {
  border-left-color: var(--bs-action);
  background: rgba(198, 255, 61, 0.07);
  color: var(--bs-action);
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) {
  .page-faq .faq-hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

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

@media (min-width: 880px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

  .page-faq .faq-hero-media {
    transform: rotate(-1.4deg);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-faq .faq-group-head {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 16px 18px;
  }

  .page-faq .faq-outro-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

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

  .page-faq .faq-item,
  .page-faq .faq-index-link,
  .page-faq .faq-outro-links a,
  .page-faq .faq-item summary::before,
  .page-faq .faq-item summary::after {
    transition: none;
  }
}