.page-faq {
  --faq-gap: 18px;
  --faq-edge: rgba(38, 239, 208, 0.10);
}

/* ---------- 首屏：不对称双栏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-bottom: 44px;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--by-line-strong) 32%, transparent 78%);
  pointer-events: none;
}

.page-faq .faq-hero .by-breadcrumb {
  margin-bottom: 26px;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 32px;
  align-items: start;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 18px;
  font-size: clamp(2.05rem, 7vw, 3.5rem);
  line-height: 1.06;
  letter-spacing: -0.025em;
  font-weight: 700;
}

.page-faq .faq-hero__lead .by-lede {
  max-width: 46ch;
}

.page-faq .faq-hero__meta {
  margin: 24px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--by-line);
  color: var(--by-mist);
  font-size: 0.86rem;
  line-height: 1.7;
}

.page-faq .faq-hero__meta .by-mono {
  color: var(--by-cyan);
  font-size: 0.95rem;
}

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

.page-faq .faq-hero__figure .by-figure__media {
  border: 1px solid var(--by-line);
  border-radius: 2px;
  overflow: hidden;
  background: linear-gradient(145deg, var(--by-jade) 0%, var(--by-ink) 62%, var(--by-ink-2) 100%);
}

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

.page-faq .faq-hero__figure .by-figure__caption {
  margin-top: 12px;
  color: var(--by-mist);
  font-size: 0.82rem;
  line-height: 1.65;
}

/* ---------- 主题带 ---------- */
.page-faq .faq-bandwrap {
  border-bottom: 1px solid var(--by-line);
  background: linear-gradient(180deg, rgba(13, 43, 37, 0.55), transparent 90%);
}

.page-faq .faq-band {
  display: flex;
  gap: 1px;
  overflow-x: auto;
  padding-bottom: 2px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-band .by-band__item {
  flex: 0 0 76%;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 20px;
  background: var(--by-ink-2);
  border-top: 2px solid transparent;
  transition: border-color 0.25s ease;
}

.page-faq .faq-band .by-band__item--hot {
  border-top-color: var(--by-orange);
}

.page-faq .faq-band .by-band__item strong {
  color: var(--by-text);
  font-size: 1rem;
  letter-spacing: 0.01em;
}

.page-faq .faq-band .by-band__item span:last-child {
  color: var(--by-mist);
  font-size: 0.84rem;
  line-height: 1.7;
}

.page-faq .faq-band__no {
  color: var(--by-cyan);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
}

/* ---------- 标签页区块 ---------- */
.page-faq .faq-topics__intro {
  max-width: 58ch;
  margin: 0 0 32px;
  color: var(--by-silver);
  font-size: 0.95rem;
  line-height: 1.85;
}

.page-faq .by-tablist {
  display: flex;
  flex-wrap: nowrap;
  gap: 4px;
  overflow-x: auto;
  border-bottom: 1px solid var(--by-line);
  -webkit-overflow-scrolling: touch;
}

.page-faq .by-tab {
  flex: 0 0 auto;
  appearance: none;
  background: none;
  border: 1px solid transparent;
  border-bottom: 2px solid transparent;
  padding: 13px 16px;
  color: var(--by-mist);
  font-family: var(--by-sans);
  font-size: 0.92rem;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .by-tab:hover {
  color: var(--by-text);
}

.page-faq .by-tab[aria-selected="true"] {
  color: var(--by-text);
  border-bottom-color: var(--by-orange);
}

.page-faq .by-tab:focus-visible {
  outline: 1px solid var(--by-line-strong);
  outline-offset: -2px;
}

.page-faq .by-tabpanel {
  display: block;
  padding-top: 30px;
}

.page-faq .by-tabpanel[hidden] {
  display: none;
}

.page-faq .faq-list {
  display: grid;
  gap: 0;
}

.page-faq .faq-item {
  padding: 22px 0;
  border-top: 1px solid var(--by-line);
}

.page-faq .faq-item:first-child {
  border-top-color: var(--by-line-strong);
}

.page-faq .faq-q {
  display: flex;
  gap: 10px;
  margin: 0 0 10px;
  color: var(--by-text);
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.55;
}

.page-faq .faq-q::before {
  content: "Q";
  flex: 0 0 auto;
  padding-top: 0.32em;
  color: var(--by-cyan);
  font-family: var(--by-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.page-faq .faq-a {
  margin: 0 0 0 21px;
  color: var(--by-silver);
  font-size: 0.92rem;
  line-height: 1.85;
}

/* ---------- 三步走 ---------- */
.page-faq .faq-flow {
  display: grid;
  gap: 30px;
  margin-top: 30px;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--by-line);
  border: 1px solid var(--by-line);
  border-radius: 2px;
  overflow: hidden;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 24px 20px;
  background: var(--by-ink-2);
}

.page-faq .faq-step__no {
  color: var(--by-cyan);
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: 0.02em;
}

.page-faq .faq-step__title {
  margin: 0 0 8px;
  color: var(--by-text);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
}

.page-faq .faq-step p {
  margin: 0;
  color: var(--by-mist);
  font-size: 0.88rem;
  line-height: 1.8;
}

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

.page-faq .faq-flow__figure .by-figure__media {
  border: 1px solid var(--by-line);
  border-radius: 2px;
  overflow: hidden;
  background: linear-gradient(200deg, var(--by-jade-2), var(--by-ink) 70%);
}

.page-faq .faq-flow__figure .by-figure__caption {
  margin-top: 12px;
  color: var(--by-mist);
  font-size: 0.82rem;
  line-height: 1.65;
}

/* ---------- 相关页面 ---------- */
.page-faq .faq-paths {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-faq .faq-path {
  display: block;
  padding: 24px 20px;
  border: 1px solid var(--by-line);
  border-radius: 2px;
  background: linear-gradient(158deg, rgba(38, 239, 208, 0.07), transparent 58%);
  text-decoration: none;
  transition: border-color 0.22s ease, transform 0.22s ease, background 0.22s ease;
}

.page-faq .faq-path:hover {
  border-color: var(--by-line-strong);
  transform: translateY(-2px);
}

.page-faq .faq-path__label {
  display: block;
  margin-bottom: 12px;
  color: var(--by-orange);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
}

.page-faq .faq-path__title {
  display: block;
  margin-bottom: 8px;
  color: var(--by-text);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
}

.page-faq .faq-path__text {
  display: block;
  color: var(--by-mist);
  font-size: 0.85rem;
  line-height: 1.75;
}

/* ---------- 帮助块 ---------- */
.page-faq .faq-help {
  display: grid;
  gap: 20px;
  padding: 28px 22px;
  border: 1px solid var(--by-line);
  border-left: 3px solid var(--by-orange);
  border-radius: 2px;
  background: linear-gradient(112deg, rgba(255, 122, 51, 0.08), transparent 58%);
}

.page-faq .faq-help__title {
  margin: 0 0 10px;
  color: var(--by-text);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.4;
}

.page-faq .faq-help__text {
  margin: 0;
  max-width: 62ch;
  color: var(--by-silver);
  font-size: 0.9rem;
  line-height: 1.9;
}

.page-faq .faq-help .by-btn {
  justify-self: start;
  white-space: nowrap;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-band .by-band__item {
    flex: 0 0 42%;
  }

  .page-faq .faq-help {
    padding: 32px 28px;
  }

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

@media (min-width: 820px) {
  .page-faq .faq-hero {
    padding-bottom: 60px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 44px;
  }

  .page-faq .by-tab {
    padding: 14px 22px;
    font-size: 0.95rem;
  }

  .page-faq .faq-band .by-band__item {
    flex: 1 1 0;
  }

  .page-faq .faq-band {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    overflow: visible;
  }

  .page-faq .faq-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 46px;
  }

  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 28px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-flow {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-paths {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-hero h1 {
    letter-spacing: -0.03em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-path,
  .page-faq .by-tab {
    transition: none;
  }

  .page-faq .faq-path:hover {
    transform: none;
  }
}
<<<END>>>