.page-disclaimer {
  --dc-spine: 60px;
  --dc-gap: 44px;
  padding-bottom: 72px;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .doc-hero {
  position: relative;
  padding-top: 28px;
}

.page-disclaimer .doc-hero__rule {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--hairline);
}

.page-disclaimer .doc-hero__meta {
  font-size: 13px;
  color: var(--neon-cyan);
  letter-spacing: .04em;
}

.page-disclaimer .doc-hero__title {
  margin: 26px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7vw, 66px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--cream);
  max-width: 15ch;
}

.page-disclaimer .doc-hero__rule::after {
  content: "";
  display: block;
  width: 100%;
  height: 6px;
  margin-top: 14px;
  background: linear-gradient(90deg, var(--neon-purple), var(--neon-cyan) 55%, var(--warm-orange));
}

.page-disclaimer .doc-hero__lead {
  margin: 24px 0 0;
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 刻度尺 ---------- */
.page-disclaimer .ruler {
  margin: 36px 0 30px;
  padding-top: 4px;
}

.page-disclaimer .ruler::before {
  content: "";
  display: block;
  height: 18px;
  border-top: 3px solid var(--neon-purple);
  background-image: repeating-linear-gradient(
    to right,
    var(--mist) 0 1px,
    transparent 1px 8.3333%
  );
  background-size: 100% 9px;
  background-repeat: no-repeat;
  background-position: top left;
  opacity: .8;
}

.page-disclaimer .ruler__nodes {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .ruler__node {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.page-disclaimer .ruler__dot {
  width: 12px;
  height: 12px;
  border: 2px solid var(--ink-night);
  background: var(--neon-cyan);
  box-shadow: 0 0 0 2px rgba(53, 230, 224, .45);
}

.page-disclaimer .ruler__dot--now {
  background: var(--warm-orange);
  box-shadow: 0 0 0 2px rgba(255, 138, 61, .5);
}

.page-disclaimer .ruler__ver {
  font-size: 13px;
  color: var(--cream);
  letter-spacing: .06em;
}

.page-disclaimer .ruler__note {
  display: none;
  font-size: 12px;
  color: var(--mist);
}

.page-disclaimer .ruler__caption {
  margin: 18px 0 0;
  font-size: 12px;
  color: var(--mist);
  letter-spacing: .04em;
}

/* ---------- 目录 ---------- */
.page-disclaimer .doc-toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .doc-toc__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 14px;
  border: 2px solid var(--hairline);
  background: var(--panel-deep);
  color: var(--mist);
  font-size: 14px;
  letter-spacing: .5px;
  text-decoration: none;
  transition: border-color .18s ease, color .18s ease, transform .18s ease;
}

.page-disclaimer .doc-toc__link:hover,
.page-disclaimer .doc-toc__link:focus-visible {
  border-color: var(--neon-purple);
  color: var(--cream);
  transform: translateY(-2px);
}

/* ---------- 主体骨架 ---------- */
.page-disclaimer .doc-body {
  margin-top: 44px;
}

.page-disclaimer .page-spine {
  display: none;
}

.page-disclaimer .doc-section {
  scroll-margin-top: 132px;
  margin-bottom: 56px;
}

.page-disclaimer .doc-section__head {
  padding-top: 16px;
  border-top: 1px solid var(--hairline);
}

.page-disclaimer .doc-section__no {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--neon-cyan);
}

.page-disclaimer .doc-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.4vw, 34px);
  line-height: 1.2;
  color: var(--cream);
}

.page-disclaimer .doc-section__sub {
  margin: 10px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

.page-disclaimer .doc-section:target .doc-section__head {
  border-top-color: var(--neon-purple);
  box-shadow: 0 -1px 0 var(--neon-purple);
}

.page-disclaimer .doc-section:target .doc-section__title {
  color: #fff;
}

/* ---------- 条目清单 ---------- */
.page-disclaimer .note-list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .note-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px;
  padding: 18px 12px 18px 12px;
  border-top: 1px solid var(--hairline);
  border-left: 4px solid transparent;
  transition: border-left-color .18s ease, background-color .18s ease, transform .18s ease;
}

.page-disclaimer .note-item:last-child {
  border-bottom: 1px solid var(--hairline);
}

.page-disclaimer .note-item:hover {
  border-left-color: var(--neon-purple);
  background: var(--panel-deep);
  transform: translateX(2px);
}

.page-disclaimer .note-item__no {
  padding-top: 4px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--neon-cyan);
}

.page-disclaimer .note-item__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--cream);
}

.page-disclaimer .note-item__body p {
  margin: 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-disclaimer .note-item__body .mono {
  color: var(--neon-cyan);
}

.page-disclaimer .note-item__body .link-underline {
  color: var(--neon-purple);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 高亮条 ---------- */
.page-disclaimer .callout {
  margin-top: 26px;
  padding: 18px 18px 18px 20px;
  border-left: 6px solid var(--warm-orange);
  background: var(--panel-deep);
}

.page-disclaimer .callout__title {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--warm-orange);
}

.page-disclaimer .callout p {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--cream);
}

.page-disclaimer .callout .mono {
  color: var(--warm-orange);
}

/* ---------- 版本节奏图 ---------- */
.page-disclaimer .frame-media {
  margin: 28px 0 4px;
}

/* ---------- 结尾 ---------- */
.page-disclaimer .doc-section--slim {
  padding: 24px 20px 26px;
  border: var(--edge) solid var(--hairline);
  background: linear-gradient(135deg, var(--panel-deep), rgba(180, 76, 255, .12));
  box-shadow: var(--shadow-hard);
  margin-bottom: 24px;
}

.page-disclaimer .doc-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

/* ---------- 返回顶部 ---------- */
.page-disclaimer .to-top {
  position: fixed;
  right: 16px;
  bottom: 20px;
  z-index: 40;
  min-height: 44px;
  padding: 10px 16px;
  border: var(--edge) solid var(--dark-brown);
  background: var(--warm-orange);
  color: var(--ink-night);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .5px;
  cursor: pointer;
  box-shadow: var(--shadow-hard);
  opacity: 0;
  visibility: hidden;
  transition: opacity .2s ease, visibility .2s ease, transform .2s ease;
}

.page-disclaimer .to-top[data-visible] {
  opacity: 1;
  visibility: visible;
}

.page-disclaimer .to-top:hover {
  transform: translateY(-4px);
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-disclaimer .ruler__note {
    display: block;
  }

  .page-disclaimer .note-item {
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 16px;
    padding: 22px 20px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-disclaimer .doc-hero__title {
    max-width: 18ch;
  }

  .page-disclaimer .doc-body {
    display: grid;
    grid-template-columns: var(--dc-spine) minmax(0, 1fr);
    gap: var(--dc-gap);
  }

  .page-disclaimer .page-spine {
    display: block;
    position: relative;
  }

  .page-disclaimer .page-spine::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 8px;
    border-radius: 4px;
    background: linear-gradient(180deg, var(--neon-purple), var(--neon-cyan) 60%, var(--warm-orange));
    box-shadow: 0 0 22px rgba(180, 76, 255, .45);
  }

  .page-disclaimer .page-spine__label {
    position: sticky;
    top: 130px;
    display: block;
    margin-left: 22px;
    writing-mode: vertical-rl;
    font-size: 12px;
    letter-spacing: .22em;
    color: var(--mist);
  }

  .page-disclaimer .doc-content {
    max-width: 760px;
    margin-left: 32px;
  }

  .page-disclaimer .doc-section {
    margin-bottom: 68px;
  }
}

@media (min-width: 1180px) {
  .page-disclaimer .doc-hero__lead {
    margin-left: 8px;
  }

  .page-disclaimer .doc-content {
    margin-left: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .note-item,
  .page-disclaimer .doc-toc__link,
  .page-disclaimer .to-top {
    transition: none;
  }
}