.page-disclaimer {
  --pd-grid: rgba(176, 196, 222, 0.045);
  --pd-card-bg: rgba(15, 36, 69, 0.58);
  background-color: var(--c-bg);
  background-image:
    linear-gradient(var(--pd-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--pd-grid) 1px, transparent 1px);
  background-size: 32px 32px;
  position: relative;
  overflow-x: hidden;
  padding-bottom: 5rem;
}

/* ============ 公告牌首屏 ============ */
.page-disclaimer__hero {
  position: relative;
  padding: clamp(1.5rem, 4vw, 3rem) 0 clamp(2rem, 5vw, 3.5rem);
  border-bottom: 1px solid var(--c-border);
}

.page-disclaimer__hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: clamp(120px, 22vw, 260px);
  height: clamp(90px, 16vw, 190px);
  background: linear-gradient(135deg, rgba(255, 107, 26, 0.18), rgba(198, 255, 0, 0.05));
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  pointer-events: none;
}

.page-disclaimer__hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  background: linear-gradient(90deg, var(--c-accent) 0%, var(--c-accent) 40%, var(--c-accent-2) 100%);
  opacity: 0.75;
}

.page-disclaimer__hero-inner {
  position: relative;
  z-index: 1;
}

.page-disclaimer__hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  margin-top: 1.75rem;
}

.page-disclaimer__hero-content {
  display: flex;
  flex-direction: column;
}

.page-disclaimer__kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
  border-left: 3px solid var(--c-accent);
  padding-left: 0.75rem;
  margin-bottom: 1rem;
}

.page-disclaimer__title {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5vw, 3.6rem);
  line-height: 1.06;
  color: var(--c-text);
  letter-spacing: -0.02em;
  margin: 0 0 1.1rem;
}

.page-disclaimer__desc {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--c-text-dim);
  max-width: 56ch;
  margin: 0;
}

.page-disclaimer__hero-figure {
  position: relative;
  aspect-ratio: 2 / 1;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-bg-alt);
  margin: 0;
}

.page-disclaimer__hero-figure img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-disclaimer__hero-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  align-items: center;
  margin-top: 1.75rem;
  padding: 0.8rem 1rem;
  background: var(--pd-card-bg);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-accent);
  border-radius: var(--radius);
}

.page-disclaimer__strip-item {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--c-text-dim);
  white-space: nowrap;
}

/* ============ 章节区块 ============ */
.page-disclaimer__section {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
  border-bottom: 1px solid var(--c-border);
}

.page-disclaimer__section:last-of-type {
  border-bottom: none;
}

.page-disclaimer__section-head {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.75rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--c-border);
}

.page-disclaimer__section-num {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  line-height: 1;
  color: var(--c-accent);
  flex-shrink: 0;
}

.page-disclaimer__section-title-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.page-disclaimer__section-title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.6vw, 2rem);
  line-height: 1.2;
  color: var(--c-text);
  margin: 0;
}

.page-disclaimer__section-sub {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-text-dim);
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ============ 公告牌条款板 ============ */
.page-disclaimer__board {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.page-disclaimer__clause {
  display: flex;
  gap: 0.9rem;
  padding: 1.15rem 1.1rem;
  background: var(--pd-card-bg);
  border: 1px solid var(--c-border);
  border-radius: 8px;
  transition: background var(--trans), border-color var(--trans), box-shadow var(--trans), transform var(--trans);
}

.page-disclaimer__clause:hover,
.page-disclaimer__clause:focus-within {
  background: var(--c-bg-alt);
  border-color: var(--c-accent);
  box-shadow: inset 3px 0 0 var(--c-accent);
  transform: translateX(3px);
}

.page-disclaimer__clause-index {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-top: 0.1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--c-accent);
  border: 2px solid var(--c-accent);
  border-radius: 4px;
  background: rgba(255, 107, 26, 0.06);
}

.page-disclaimer__clause-content {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-width: 0;
}

.page-disclaimer__clause-title {
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.3;
  color: var(--c-text);
  margin: 0;
}

.page-disclaimer__clause-content p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--c-text);
  opacity: 0.88;
  margin: 0;
  max-width: 70ch;
}

.page-disclaimer__clause-content a {
  color: var(--c-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--trans);
}

.page-disclaimer__clause-content a:hover,
.page-disclaimer__clause-content a:focus {
  color: var(--c-accent-2);
}

/* ============ 返回顶部按钮 ============ */
.page-disclaimer__back-top {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1rem;
  background: var(--c-accent);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  transition: filter var(--trans), transform var(--trans);
  z-index: 20;
}

.page-disclaimer__back-top:hover,
.page-disclaimer__back-top:focus {
  filter: brightness(1.12);
  transform: translateY(-2px);
}

.page-disclaimer__back-top-arrow {
  font-size: 1.1rem;
  line-height: 1;
}

/* ============ 平板与桌面 ============ */
@media (min-width: 768px) {
  .page-disclaimer__clause {
    gap: 1.2rem;
    padding: 1.4rem 1.6rem;
  }

  .page-disclaimer__clause-title {
    font-size: 1.05rem;
  }

  .page-disclaimer__clause-index {
    width: 38px;
    height: 38px;
    font-size: 0.9rem;
  }

  .page-disclaimer__hero-strip {
    padding: 0.85rem 1.25rem;
    margin-top: 2rem;
  }
}

@media (min-width: 992px) {
  .page-disclaimer__hero {
    padding-top: clamp(2.5rem, 5vw, 4rem);
  }

  .page-disclaimer__hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 2.5rem;
    align-items: center;
    margin-top: 2.25rem;
  }

  .page-disclaimer__desc {
    font-size: 1.05rem;
  }

  .page-disclaimer__section-head {
    margin-bottom: 2.25rem;
  }

  .page-disclaimer__board {
    gap: 1.25rem;
  }

  .page-disclaimer__clause {
    padding: 1.6rem 2rem;
  }

  .page-disclaimer__clause-content p {
    font-size: 1rem;
  }
}