.page-disclaimer {
  --usage-glow-violet: 0 0 0 1px rgba(168, 85, 247, .4), 0 0 26px -6px rgba(168, 85, 247, .8);
  --usage-glow-lime: 0 0 0 1px rgba(182, 255, 59, .4), 0 0 24px -6px rgba(182, 255, 59, .75);
  padding-bottom: 28px;
}

/* ---------- 面包屑 ---------- */
.page-disclaimer .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  font-size: 13px;
}

.page-disclaimer .breadcrumb__link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, .28);
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.page-disclaimer .breadcrumb__link:hover {
  color: var(--lime);
  border-color: var(--lime);
}

.page-disclaimer .breadcrumb__sep {
  color: var(--rule);
}

.page-disclaimer .breadcrumb__current {
  font-family: var(--font-mono);
  letter-spacing: .05em;
  color: var(--lime);
}

/* ---------- 首屏刻度窗口 ---------- */
.page-disclaimer .usage-hero {
  padding: clamp(16px, 3vw, 30px) 0 clamp(30px, 5vw, 54px);
}

.page-disclaimer .usage-window {
  position: relative;
  overflow: hidden;
  padding: clamp(46px, 6vw, 66px) clamp(18px, 4vw, 46px) clamp(30px, 4vw, 46px);
  border: 1px solid var(--rule);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 95% at 4% 0%, rgba(168, 85, 247, .18), transparent 62%),
    radial-gradient(90% 85% at 100% 108%, rgba(34, 211, 238, .14), transparent 64%),
    rgba(27, 32, 39, .62);
}

.page-disclaimer .usage-window::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 9px;
  background: repeating-linear-gradient(90deg, var(--rule) 0 1px, transparent 1px 18px);
  opacity: .9;
  pointer-events: none;
}

.page-disclaimer .usage-window__corner {
  position: absolute;
  z-index: 2;
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(14, 17, 22, .78);
  font-size: 10.5px;
  letter-spacing: .07em;
  color: rgba(182, 255, 59, .8);
  white-space: nowrap;
}

.page-disclaimer .usage-window__corner--tl { top: 18px; left: 14px; }
.page-disclaimer .usage-window__corner--tr { top: 18px; right: 14px; color: rgba(34, 211, 238, .85); }
.page-disclaimer .usage-window__corner--bl { bottom: 12px; left: 14px; color: rgba(194, 112, 63, .95); }
.page-disclaimer .usage-window__corner--br { bottom: 12px; right: 14px; color: rgba(233, 227, 213, .6); }

.page-disclaimer .usage-window__grid {
  display: grid;
  gap: clamp(24px, 4vw, 42px);
}

.page-disclaimer .usage-window__copy h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 5.6vw, 48px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--bone);
}

.page-disclaimer .usage-window__copy .lede {
  margin: 16px 0 0;
  max-width: 34em;
  color: rgba(233, 227, 213, .82);
}

.page-disclaimer .usage-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-disclaimer .usage-window__media {
  margin: 0;
  aspect-ratio: 16 / 9;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--rule);
  box-shadow: var(--usage-glow-violet);
}

.page-disclaimer .usage-window__media .media-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.03);
}

.page-disclaimer .usage-window__media .media-frame__cap {
  font-size: 12px;
  color: rgba(233, 227, 213, .6);
}

/* ---------- 章节跳转 ---------- */
.page-disclaimer .usage-jump {
  position: sticky;
  top: var(--bar-h);
  z-index: 6;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: rgba(14, 17, 22, .88);
  backdrop-filter: blur(10px);
}

.page-disclaimer .usage-jump__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 9px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-disclaimer .usage-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 13px;
  color: rgba(233, 227, 213, .78);
  text-decoration: none;
  white-space: nowrap;
  transition: color .16s var(--ease), border-color .16s var(--ease), box-shadow .16s var(--ease);
}

.page-disclaimer .usage-jump__link .mono {
  color: var(--clay);
  font-size: 11px;
}

.page-disclaimer .usage-jump__link:hover,
.page-disclaimer .usage-jump__link:focus-visible {
  color: var(--lime);
  border-color: rgba(182, 255, 59, .38);
  box-shadow: var(--usage-glow-lime);
}

/* ---------- 章节基底 ---------- */
.page-disclaimer .usage-sec {
  padding: clamp(46px, 7vw, 86px) 0;
}

.page-disclaimer .usage-sec--tint {
  background:
    radial-gradient(100% 80% at 100% 0%, rgba(168, 85, 247, .1), transparent 60%),
    linear-gradient(180deg, rgba(27, 32, 39, .92), rgba(14, 17, 22, .55));
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.page-disclaimer .chapter {
  margin-bottom: clamp(22px, 3.4vw, 36px);
}

.page-disclaimer .usage-prose--after {
  margin-top: clamp(22px, 3.4vw, 34px);
}

.page-disclaimer .usage-split {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
}

.page-disclaimer .usage-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-disclaimer .usage-list li {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(233, 227, 213, .8);
}

/* ---------- 侧栏数据 ---------- */
.page-disclaimer .usage-aside {
  padding-left: 18px;
  border-left: 2px solid rgba(124, 139, 107, .55);
}

.page-disclaimer .usage-aside__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--moss);
}

.page-disclaimer .usage-facts {
  margin: 0 0 18px;
  padding: 0;
}

.page-disclaimer .usage-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--rule);
}

.page-disclaimer .usage-facts dt {
  font-size: 13px;
  color: rgba(233, 227, 213, .58);
}

.page-disclaimer .usage-facts dd {
  margin: 0;
  font-size: 13.5px;
  text-align: right;
  color: var(--bone);
}

/* ---------- 分值区间刻度带 ---------- */
.page-disclaimer .scale-band {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: clamp(22px, 3.4vw, 34px);
}

.page-disclaimer .scale-step {
  position: relative;
  padding: 20px 14px 16px;
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  background: rgba(14, 17, 22, .62);
  transition: border-color .17s var(--ease), box-shadow .17s var(--ease), transform .17s var(--ease);
}

.page-disclaimer .scale-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 14px;
  right: 14px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: linear-gradient(90deg, var(--violet), var(--cyan));
  opacity: .45;
  transition: opacity .17s var(--ease);
}

.page-disclaimer .scale-step:hover,
.page-disclaimer .scale-step:focus-within {
  border-color: rgba(182, 255, 59, .42);
  box-shadow: var(--usage-glow-lime);
  transform: translateY(-2px);
}

.page-disclaimer .scale-step:hover::before,
.page-disclaimer .scale-step:focus-within::before {
  opacity: 1;
}

.page-disclaimer .scale-step__range {
  display: block;
  font-size: 17px;
  color: var(--lime);
  letter-spacing: -.02em;
}

.page-disclaimer .scale-step__short {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--clay);
}

.page-disclaimer .scale-step__note {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(233, 227, 213, .72);
  opacity: .72;
  transition: opacity .17s var(--ease);
}

.page-disclaimer .scale-step:hover .scale-step__note,
.page-disclaimer .scale-step:focus-within .scale-step__note {
  opacity: 1;
}

/* ---------- 档案夹 ---------- */
.page-disclaimer .folder-grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(22px, 3.4vw, 34px);
}

.page-disclaimer .folder {
  position: relative;
}

.page-disclaimer .recover {
  margin-top: clamp(24px, 3.6vw, 38px);
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--rule);
  border-radius: var(--r-lg);
  background:
    radial-gradient(90% 120% at 0% 0%, rgba(255, 61, 190, .1), transparent 60%),
    rgba(27, 32, 39, .58);
}

.page-disclaimer .recover__title {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(18px, 2.4vw, 22px);
  letter-spacing: -.01em;
  color: var(--bone);
}

.page-disclaimer .recover__ways {
  display: grid;
  gap: 20px;
}

.page-disclaimer .recover__way-num {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--magenta);
}

.page-disclaimer .recover__way-title {
  margin: 8px 0 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 16px;
  color: var(--cyan);
}

.page-disclaimer .recover__way p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(233, 227, 213, .78);
}

.page-disclaimer .recover__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 视图密度 ---------- */
.page-disclaimer .density-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: clamp(20px, 3.2vw, 32px);
}

.page-disclaimer .density-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 16px;
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  background: rgba(14, 17, 22, .58);
  transition: border-color .17s var(--ease), box-shadow .17s var(--ease);
}

.page-disclaimer .density-card:hover {
  border-color: rgba(168, 85, 247, .55);
  box-shadow: var(--usage-glow-violet);
}

.page-disclaimer .density-card--default {
  border-color: rgba(182, 255, 59, .34);
  background: rgba(182, 255, 59, .05);
}

.page-disclaimer .density-card__key {
  font-size: 18px;
  letter-spacing: .04em;
  color: var(--bone);
}

.page-disclaimer .density-card--default .density-card__key {
  color: var(--lime);
}

.page-disclaimer .density-card__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(233, 227, 213, .74);
}

.page-disclaimer .density-card .tag {
  align-self: flex-start;
}

/* ---------- 时间线 ---------- */
.page-disclaimer .timeline {
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
}

.page-disclaimer .timeline__item {
  position: relative;
  padding-bottom: 22px;
}

.page-disclaimer .timeline__item:last-child {
  padding-bottom: 0;
}

.page-disclaimer .timeline__item::before {
  content: "";
  position: absolute;
  top: 6px;
  left: -26px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--violet);
  box-shadow: 0 0 14px -2px rgba(168, 85, 247, .9);
}

.page-disclaimer .timeline__item::after {
  content: "";
  position: absolute;
  top: 21px;
  bottom: 0;
  left: -21px;
  width: 1px;
  background: var(--rule);
}

.page-disclaimer .timeline__item:last-child::after {
  display: none;
}

.page-disclaimer .timeline__year {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-disclaimer .timeline__text {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(233, 227, 213, .8);
}

/* ---------- 求助入口 ---------- */
.page-disclaimer .help-ways {
  display: grid;
  gap: 16px;
}

.page-disclaimer .help-way {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--rule);
  border-radius: var(--r-lg);
  background: rgba(14, 17, 22, .6);
}

.page-disclaimer .help-way--accent {
  background:
    radial-gradient(110% 130% at 100% 0%, rgba(168, 85, 247, .18), transparent 62%),
    rgba(27, 32, 39, .7);
  border-color: rgba(168, 85, 247, .38);
}

.page-disclaimer .help-way__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(17px, 2.3vw, 20px);
  letter-spacing: -.01em;
  color: var(--bone);
}

.page-disclaimer .help-way__text {
  margin: 0 0 20px;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(233, 227, 213, .8);
  word-break: break-word;
}

/* ---------- 悬浮返回按钮 ---------- */
.page-disclaimer .usage-float {
  position: fixed;
  right: 12px;
  bottom: 72px;
  z-index: 20;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 16px;
  border-radius: 999px;
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 800;
  color: #12061F;
  text-decoration: none;
  background: linear-gradient(135deg, var(--violet), var(--magenta));
  box-shadow: 0 10px 30px -10px rgba(168, 85, 247, .95), 0 0 0 1px rgba(255, 61, 190, .35);
  transition: box-shadow .17s var(--ease), transform .17s var(--ease);
}

.page-disclaimer .usage-float__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 10px rgba(182, 255, 59, .95);
}

.page-disclaimer .usage-float:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px -10px rgba(255, 61, 190, 1), 0 0 0 1px rgba(182, 255, 59, .6);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-disclaimer .folder-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-disclaimer .recover__ways {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
  }

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

  .page-disclaimer .help-ways {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-disclaimer .scale-band {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 920px) {
  .page-disclaimer .usage-window__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: end;
  }

  .page-disclaimer .usage-split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-disclaimer .usage-float {
    right: 28px;
    bottom: 28px;
    padding: 13px 20px;
    font-size: 14px;
  }
}

@media (min-width: 1100px) {
  .page-disclaimer .density-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-disclaimer .scale-band {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-disclaimer .scale-step {
    padding: 22px 13px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .scale-step,
  .page-disclaimer .scale-step__note,
  .page-disclaimer .density-card,
  .page-disclaimer .usage-float,
  .page-disclaimer .usage-jump__link {
    transition: none;
  }

  .page-disclaimer .scale-step:hover,
  .page-disclaimer .usage-float:hover {
    transform: none;
  }
}