.page-faq {
  --faq-ans-bg: var(--rb-white);
  --faq-ans-ink: var(--rb-black);
  --faq-cut: 16px;
  --faq-panel-bg: var(--rb-panel);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding-top: clamp(28px, 5vw, 56px);
  padding-bottom: clamp(36px, 6vw, 76px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(118deg, rgba(210, 32, 47, 0.18) 0%, rgba(210, 32, 47, 0) 40%),
    radial-gradient(900px 460px at 92% -12%, rgba(46, 125, 255, 0.16), transparent 62%),
    radial-gradient(680px 380px at 4% 108%, rgba(11, 59, 58, 0.5), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4.5vw, 52px);
  align-items: center;
}

.page-faq .faq-crumb {
  margin: 0 0 clamp(14px, 2vw, 22px);
}

.page-faq .faq-h1 {
  font-size: clamp(2rem, 5vw, 3.9rem);
  line-height: 1.04;
  margin: 0 0 clamp(14px, 2vw, 20px);
  max-width: 15em;
}

.page-faq .faq-lead {
  max-width: 34em;
  margin: 0 0 14px;
}

.page-faq .faq-hero__hint {
  margin: 0;
  padding-left: 14px;
  border-left: 3px solid var(--rb-red);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--rb-ink-dim);
  max-width: 32em;
}

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

.page-faq .faq-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
  background: linear-gradient(140deg, var(--rb-panel) 0%, var(--rb-indigo) 54%, var(--rb-teal) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

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

.page-faq .faq-media--wide {
  aspect-ratio: 25 / 17;
}

.page-faq .faq-hero__cap,
.page-faq .faq-aux__cap {
  margin-top: 12px;
  font-family: var(--rb-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--rb-ink-dim);
  line-height: 1.6;
}

.page-faq .faq-facts {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--rb-line);
  border: 1px solid var(--rb-line);
}

.page-faq .faq-facts li {
  background: var(--rb-black);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-facts__n {
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  font-weight: 700;
  color: var(--rb-white);
  line-height: 1;
}

.page-faq .faq-facts li:nth-child(1) .faq-facts__n { color: var(--rb-red); }
.page-faq .faq-facts li:nth-child(2) .faq-facts__n { color: var(--rb-yellow); }
.page-faq .faq-facts li:nth-child(3) .faq-facts__n { color: var(--rb-blue); }
.page-faq .faq-facts li:nth-child(4) .faq-facts__n { color: var(--rb-white); }

.page-faq .faq-facts__l {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--rb-ink-dim);
}

.page-faq .faq-hero__rail {
  position: relative;
  margin-top: clamp(24px, 4vw, 44px);
  height: 4px;
  background: linear-gradient(90deg,
    var(--rb-red) 0 32%,
    var(--rb-yellow) 32% 46%,
    var(--rb-blue) 46% 100%);
  clip-path: polygon(0 0, 100% 0, calc(100% - var(--faq-cut)) 100%, 0 100%);
}

/* ---------- 问答主板 ---------- */

.page-faq .faq-board {
  padding-top: clamp(32px, 5vw, 64px);
}

.page-faq .faq-board__grid {
  display: grid;
  gap: clamp(22px, 3.6vw, 44px);
  align-items: start;
}

.page-faq .faq-board__aside-label {
  margin: 0 0 12px;
  font-family: var(--rb-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rb-ink-dim);
}

.page-faq .faq-tabs__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-faq .faq-tab {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 15px 16px;
  text-align: left;
  font-family: var(--rb-font-body);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--rb-ink-soft);
  background: var(--rb-panel);
  border: 1px solid var(--rb-line);
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: background var(--rb-dur) var(--rb-ease),
              color var(--rb-dur) var(--rb-ease),
              border-color var(--rb-dur) var(--rb-ease);
}

.page-faq .faq-tab:hover {
  color: var(--rb-ink);
  border-color: rgba(46, 125, 255, 0.55);
}

.page-faq .faq-tab:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--rb-blue);
}

.page-faq .faq-tab[aria-selected="true"] {
  background: var(--rb-red);
  border-color: var(--rb-red);
  color: var(--rb-white);
}

.page-faq .faq-tab__idx {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--rb-blue);
  flex: none;
}

.page-faq .faq-tab[aria-selected="true"] .faq-tab__idx {
  color: var(--rb-yellow);
}

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

/* 面板 */

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

.page-faq .faq-panel__title {
  margin: 0 0 10px;
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--rb-white);
  line-height: 1.25;
}

.page-faq .faq-panel__intro {
  margin: 0 0 clamp(20px, 3vw, 30px);
  max-width: 40em;
  font-size: 0.96rem;
  line-height: 1.75;
  color: var(--rb-ink-soft);
}

.page-faq .faq-panel__more {
  margin: clamp(22px, 3vw, 32px) 0 0;
}

/* 问答条目 */

.page-faq .faq-list {
  border-top: 1px solid var(--rb-line);
}

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

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 18px 6px;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--rb-font-body);
  font-size: 1rem;
  font-weight: 500;
  color: var(--rb-ink);
  cursor: pointer;
  transition: color 160ms var(--rb-ease);
}

.page-faq .faq-q:hover {
  color: var(--rb-yellow);
}

.page-faq .faq-q:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--rb-blue);
}

.page-faq .faq-q__num {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--rb-blue);
  flex: none;
}

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

.page-faq .faq-q__mark {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  background: var(--rb-red);
  transition: transform 200ms var(--rb-ease), opacity 200ms var(--rb-ease);
}

.page-faq .faq-q__mark::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-faq .faq-q__mark::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

.page-faq .faq-q[aria-expanded="true"] .faq-q__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .rb-accordion__panel {
  padding: 0 6px 20px;
  animation: faq-panel-in 240ms var(--rb-ease) both;
}

@keyframes faq-panel-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.page-faq .faq-a__body {
  background: var(--faq-ans-bg);
  color: var(--faq-ans-ink);
  padding: 18px 20px 20px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-a__body p {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.78;
  max-width: 38em;
}

.page-faq .faq-a__src {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid rgba(10, 11, 13, 0.16);
  font-family: var(--rb-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: rgba(10, 11, 13, 0.62);
}

/* 辅助插图 */

.page-faq .faq-aux {
  margin: clamp(28px, 4vw, 40px) 0 0;
}

/* ---------- 交叉索引 ---------- */

.page-faq .faq-cross {
  padding-top: clamp(34px, 5vw, 60px);
  padding-bottom: clamp(40px, 6vw, 72px);
}

.page-faq .faq-cross__inner {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  border-top: 1px solid var(--rb-line);
  padding-top: clamp(26px, 4vw, 40px);
}

.page-faq .faq-cross__text h2 {
  margin: 0 0 12px;
  font-size: clamp(1.3rem, 2.4vw, 1.75rem);
  color: var(--rb-white);
}

.page-faq .faq-cross__desc {
  margin: 0;
  max-width: 34em;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--rb-ink-soft);
}

.page-faq .faq-cross__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--rb-line);
  border: 1px solid var(--rb-line);
}

.page-faq .faq-cross__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: var(--rb-panel);
  color: var(--rb-ink);
  text-decoration: none;
  transition: background var(--rb-dur) var(--rb-ease),
              color var(--rb-dur) var(--rb-ease);
}

.page-faq .faq-cross__link:hover,
.page-faq .faq-cross__link:focus-visible {
  background: var(--rb-wine);
  color: var(--rb-white);
  outline: none;
}

.page-faq .faq-cross__code {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--rb-yellow);
}

.page-faq .faq-cross__name {
  font-size: 0.95rem;
  font-weight: 500;
}

.page-faq .faq-cross__arrow {
  color: var(--rb-blue);
  font-size: 1.05rem;
  line-height: 1;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: center;
  }

  .page-faq .faq-board__grid {
    grid-template-columns: minmax(0, 260px) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-faq .faq-board__tabs {
    position: sticky;
    top: calc(var(--rb-header-space) + 20px);
    align-self: start;
  }

  .page-faq .faq-cross__inner {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

@media (max-width: 899px) {
  .page-faq .faq-tabs__list {
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: 10px;
    scrollbar-width: thin;
    -webkit-overflow-scrolling: touch;
  }

  .page-faq .faq-tab {
    width: auto;
    flex: 0 0 auto;
    white-space: nowrap;
  }
}

@media (max-width: 520px) {
  .page-faq .faq-q {
    gap: 10px;
    padding: 16px 2px;
    font-size: 0.96rem;
  }

  .page-faq .faq-a__body {
    padding: 16px 16px 18px;
  }

  .page-faq .faq-tab {
    padding: 13px 14px;
    font-size: 0.9rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .rb-accordion__panel {
    animation-duration: 120ms;
  }

  .page-faq .faq-q__mark::before,
  .page-faq .faq-q__mark::after,
  .page-faq .faq-tab,
  .page-faq .faq-cross__link {
    transition-duration: 120ms;
  }
}
<<<PAGE_CSS_END>>>