/* ============ 使用指引 /usage/ ============ */
.page-disclaimer {
  --pd-rule: rgba(255, 255, 255, 0.09);
  --pd-ink-soft: rgba(244, 242, 248, 0.82);
  --pd-ink-mute: rgba(244, 242, 248, 0.62);
  background: var(--nx-ink);
  color: var(--nx-cloud);
}

/* ---- 页首窄横幅，斜切下缘 ---- */
.page-disclaimer .pd-banner {
  position: relative;
  margin: 0;
  background: var(--nx-ink-2);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), 0 100%);
}
.page-disclaimer .pd-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(8, 7, 13, 0.1) 0%, rgba(8, 7, 13, 0.88) 100%);
}
.page-disclaimer .pd-banner img {
  display: block;
  width: 100%;
  height: 164px;
  object-fit: cover;
  object-position: center;
}

/* ---- 标题区 ---- */
.page-disclaimer .pd-head {
  padding-top: 26px;
  padding-bottom: 32px;
}
.page-disclaimer .pd-head .nx-crumb {
  margin-bottom: 26px;
}
.page-disclaimer .pd-title {
  margin: 14px 0 16px;
  max-width: 16em;
  font-family: var(--nx-sans);
  font-size: clamp(2.1rem, 6.4vw, 3.5rem);
  font-weight: 250;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--nx-cloud);
}
.page-disclaimer .pd-lead {
  max-width: 36em;
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--pd-ink-soft);
}

/* ---- 两栏对照：左栏吸顶编号，右栏正文 ---- */
.page-disclaimer .pd-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding-bottom: 40px;
}

.page-disclaimer .pd-rail__list {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.page-disclaimer .pd-rail__list::-webkit-scrollbar {
  display: none;
}
.page-disclaimer .pd-rail__item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 14px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--nx-mist);
  background: var(--nx-glass);
  border: 1px solid var(--nx-glass-line);
  border-radius: 999px;
  transition: color 220ms var(--nx-ease), background 220ms var(--nx-ease),
    border-color 220ms var(--nx-ease);
}
.page-disclaimer .pd-rail__item:hover,
.page-disclaimer .pd-rail__item:focus-visible {
  color: var(--nx-cloud);
  border-color: var(--nx-violet);
  background: rgba(123, 69, 255, 0.16);
}
.page-disclaimer .pd-rail__num {
  flex: none;
  font-family: var(--nx-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--nx-gold);
}
.page-disclaimer .pd-rail__label {
  font-size: 14px;
  line-height: 1.5;
}

/* ---- 章节块 ---- */
.page-disclaimer .pd-block {
  padding-bottom: 38px;
  margin-bottom: 38px;
  border-bottom: 1px solid var(--pd-rule);
  scroll-margin-top: 96px;
}
.page-disclaimer .pd-block:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}
.page-disclaimer .pd-block__num {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 12px;
  font-family: var(--nx-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--nx-gold);
}
.page-disclaimer .pd-block__num::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(232, 184, 92, 0.5), rgba(232, 184, 92, 0));
}
.page-disclaimer .pd-block__title {
  margin: 0 0 16px;
  font-family: var(--nx-sans);
  font-size: clamp(1.3rem, 3.6vw, 1.8rem);
  font-weight: 600;
  line-height: 1.36;
  letter-spacing: 0.01em;
  color: var(--nx-cloud);
}
.page-disclaimer .pd-block p {
  max-width: 34em;
  margin: 0 0 1.15em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--pd-ink-soft);
}
.page-disclaimer .pd-block p:last-child {
  margin-bottom: 0;
}
.page-disclaimer .pd-block a {
  color: var(--nx-violet-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.page-disclaimer .pd-block a:hover {
  color: var(--nx-gold);
}

/* ---- 要点列表：左侧折角标记 ---- */
.page-disclaimer .pd-points {
  display: grid;
  gap: 12px;
  max-width: 36em;
  margin: 20px 0 22px;
  padding: 0;
  list-style: none;
}
.page-disclaimer .pd-points li {
  position: relative;
  padding-left: 22px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--pd-ink-mute);
  transition: color 220ms var(--nx-ease);
}
.page-disclaimer .pd-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 8px;
  height: 8px;
  border-left: 2px solid var(--nx-violet-soft);
  border-bottom: 2px solid var(--nx-violet-soft);
  transition: border-color 220ms var(--nx-ease);
}
.page-disclaimer .pd-points li:hover,
.page-disclaimer .pd-points li:focus-within {
  color: var(--nx-cloud);
}
.page-disclaimer .pd-points li:hover::before,
.page-disclaimer .pd-points li:focus-within::before {
  border-color: var(--nx-gold);
}
.page-disclaimer .pd-points a {
  color: var(--nx-violet-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.page-disclaimer .pd-points a:hover {
  color: var(--nx-gold);
}

/* ---- 收尾通道 ---- */
.page-disclaimer .pd-next {
  position: relative;
  margin-top: 48px;
  padding: 28px 22px;
  border: 1px solid var(--nx-glass-line);
  border-radius: var(--nx-radius);
  background:
    radial-gradient(120% 150% at 0% 0%, rgba(123, 69, 255, 0.24), rgba(123, 69, 255, 0) 58%),
    linear-gradient(155deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02));
}
.page-disclaimer .pd-next__eyebrow {
  margin: 0 0 12px;
  font-family: var(--nx-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--nx-gold);
}
.page-disclaimer .pd-next__title {
  margin: 0 0 12px;
  font-family: var(--nx-sans);
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 600;
  line-height: 1.34;
  letter-spacing: 0.01em;
  color: var(--nx-cloud);
}
.page-disclaimer .pd-next p {
  max-width: 34em;
  margin: 0;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--pd-ink-soft);
}
.page-disclaimer .pd-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---- 键盘焦点统一 ---- */
.page-disclaimer a:focus-visible,
.page-disclaimer button:focus-visible {
  outline: 2px solid var(--nx-violet-soft);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---- 窄屏兜底 ---- */
@media (max-width: 420px) {
  .page-disclaimer .pd-next {
    padding: 24px 18px;
  }
  .page-disclaimer .pd-banner img {
    height: 140px;
  }
}

/* ---- 桌面：左栏吸顶编号轨道 ---- */
@media (min-width: 900px) {
  .page-disclaimer .pd-banner {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 44px), 0 100%);
  }
  .page-disclaimer .pd-banner img {
    height: 290px;
  }
  .page-disclaimer .pd-head {
    padding-top: 44px;
    padding-bottom: 48px;
  }
  .page-disclaimer .pd-body {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 64px;
    padding-bottom: 56px;
  }
  .page-disclaimer .pd-rail {
    position: sticky;
    top: 104px;
    align-self: start;
  }
  .page-disclaimer .pd-rail__list {
    flex-direction: column;
    gap: 0;
    padding-bottom: 0;
    overflow: visible;
    border-left: 1px solid var(--pd-rule);
  }
  .page-disclaimer .pd-rail__item {
    margin-left: -1px;
    padding: 11px 0 11px 16px;
    white-space: normal;
    background: none;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
  }
  .page-disclaimer .pd-rail__item:hover,
  .page-disclaimer .pd-rail__item:focus-visible {
    background: linear-gradient(90deg, rgba(123, 69, 255, 0.18), rgba(123, 69, 255, 0));
    border-left-color: var(--nx-violet);
  }
  .page-disclaimer .pd-next {
    margin-top: 64px;
    padding: 46px 44px;
  }
}

/* ---- 减弱动效 ---- */
@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .pd-rail__item,
  .page-disclaimer .pd-points li,
  .page-disclaimer .pd-points li::before {
    transition: none;
  }
}
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