.page-disclaimer {
  --fold-shadow: 6px 6px 0 rgba(36, 26, 61, .5);
  --fold-shadow-hover: 9px 9px 0 rgba(36, 26, 61, .62);
  --doc-read: 62ch;
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

.page-disclaimer a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* 首屏 */
.page-disclaimer .doc-hero {
  position: relative;
  isolation: isolate;
  padding-top: clamp(1.25rem, 3vw, 2rem);
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
  overflow: hidden;
}

.page-disclaimer .doc-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 54%;
  background: linear-gradient(158deg, var(--teal) 0%, var(--ink) 64%);
  clip-path: polygon(22% 0, 100% 0, 100% 100%, 0 100%);
  opacity: .62;
  z-index: -2;
  pointer-events: none;
}

.page-disclaimer .doc-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 76px 76px;
  opacity: .14;
  z-index: -1;
  pointer-events: none;
}

.page-disclaimer .doc-hero-inner {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-disclaimer .doc-hero-copy {
  min-width: 0;
}

.page-disclaimer .doc-hero-copy .display-title {
  margin-top: .6rem;
  line-height: 1.08;
  letter-spacing: .07em;
}

.page-disclaimer .doc-hero-copy .lede {
  margin-top: 1.15rem;
  max-width: 56ch;
  color: var(--paper-dim);
}

/* 三条规矩 */
.page-disclaimer .doc-rules {
  list-style: none;
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  display: grid;
  gap: .85rem;
}

.page-disclaimer .doc-rule {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .85rem;
  align-items: start;
  padding: .95rem 1rem;
  background: rgba(13, 42, 64, .8);
  border: 2px solid var(--line);
  border-left: 4px solid var(--gold);
  box-shadow: 4px 4px 0 rgba(36, 26, 61, .42);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-disclaimer .doc-rule:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
  border-left-color: var(--orange);
  box-shadow: 7px 7px 0 rgba(36, 26, 61, .55);
}

.page-disclaimer .doc-rule-no {
  color: var(--gold);
  font-size: .9375rem;
  letter-spacing: .08em;
  padding-top: .2rem;
}

.page-disclaimer .doc-rule p {
  margin: 0;
  color: var(--paper-dim);
  font-size: 1rem;
  line-height: 1.75;
}

.page-disclaimer .doc-rule strong {
  display: block;
  color: var(--paper);
  font-weight: 800;
  letter-spacing: .02em;
  margin-bottom: .2rem;
}

/* 首屏配图 */
.page-disclaimer .doc-hero-figure {
  margin: 0;
  align-self: start;
  border: 2px solid var(--gold);
  background: var(--ink-deep);
  box-shadow: var(--fold-shadow);
  overflow: hidden;
}

.page-disclaimer .doc-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-disclaimer .doc-hero-figure .media-caption {
  margin: 0;
  padding: .8rem 1rem;
  border-top: 2px solid var(--line);
  color: var(--muted);
  font-size: .8125rem;
  line-height: 1.6;
}

/* 正文布局 */
.page-disclaimer .doc-body {
  padding-top: clamp(1.5rem, 4vw, 2.75rem);
}

.page-disclaimer .doc-layout {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.5rem);
}

.page-disclaimer .doc-toc .eyebrow {
  margin: 0;
}

.page-disclaimer .doc-toc-list {
  list-style: none;
  margin: .85rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .35rem .9rem;
}

.page-disclaimer .doc-toc-link {
  display: inline-flex;
  align-items: baseline;
  gap: .55rem;
  padding: .35rem 0;
  color: var(--paper-dim);
  font-size: .9375rem;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-disclaimer .doc-toc-link .mono {
  color: var(--gold);
  font-size: .8125rem;
  letter-spacing: .06em;
}

.page-disclaimer .doc-toc-link:hover,
.page-disclaimer .doc-toc-link:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--orange);
}

.page-disclaimer .doc-content {
  min-width: 0;
}

/* 折页章节 */
.page-disclaimer .doc-fold {
  margin: 0 0 1rem;
  border: 2px solid var(--line);
  border-left: 4px solid var(--line);
  background: var(--panel);
  box-shadow: var(--fold-shadow);
  transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-disclaimer .doc-fold:hover {
  border-color: var(--cyan);
  box-shadow: var(--fold-shadow-hover);
}

.page-disclaimer .doc-fold[open] {
  border-left-color: var(--gold);
}

.page-disclaimer .doc-fold-head {
  display: flex;
  align-items: center;
  gap: .85rem;
  padding: 1rem 1.05rem;
  cursor: pointer;
  list-style: none;
}

.page-disclaimer .doc-fold-head::-webkit-details-marker {
  display: none;
}

.page-disclaimer .doc-fold-head::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  line-height: 1;
  color: var(--gold);
  transition: color var(--dur) var(--ease);
}

.page-disclaimer .doc-fold[open] .doc-fold-head::after {
  content: "−";
  color: var(--orange);
}

.page-disclaimer .doc-fold-head:hover::after {
  color: var(--cyan);
}

.page-disclaimer .doc-fold-no {
  color: var(--gold);
  font-size: .875rem;
  letter-spacing: .1em;
}

.page-disclaimer .doc-fold-title {
  margin: 0;
  font-size: clamp(1.125rem, 2.4vw, 1.35rem);
  font-weight: 800;
  letter-spacing: .07em;
  color: var(--paper);
  line-height: 1.4;
}

.page-disclaimer .doc-fold-body {
  padding: .1rem 1.05rem 1.35rem;
  border-top: 2px solid var(--line);
}

.page-disclaimer .doc-fold-body p {
  margin: .9rem 0 0;
  max-width: var(--doc-read);
  color: var(--paper-dim);
  font-size: 1rem;
  line-height: 1.8;
}

.page-disclaimer .doc-fold-body ul {
  margin: .9rem 0 0;
  padding-left: 1.15rem;
  max-width: var(--doc-read);
  display: grid;
  gap: .6rem;
  color: var(--paper-dim);
  font-size: 1rem;
  line-height: 1.8;
}

.page-disclaimer .doc-fold-body li::marker {
  color: var(--orange);
}

.page-disclaimer .doc-link {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 2px solid rgba(242, 193, 78, .35);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-disclaimer .doc-link:hover,
.page-disclaimer .doc-link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--orange);
}

/* 页尾 */
.page-disclaimer .doc-foot {
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
  padding-top: 1.25rem;
  border-top: 2px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.5rem;
  align-items: center;
  justify-content: space-between;
}

.page-disclaimer .doc-foot-note {
  margin: 0;
  color: var(--muted);
  font-size: .8125rem;
  letter-spacing: .06em;
}

.page-disclaimer .doc-top-link {
  display: inline-block;
  padding: .55rem 1rem;
  color: var(--paper);
  font-size: .875rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-decoration: none;
  border: 2px solid var(--orange);
  background: transparent;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-disclaimer .doc-top-link:hover,
.page-disclaimer .doc-top-link:focus-visible {
  background: var(--orange);
  color: var(--ink);
}

/* 桌面端 */
@media (min-width: 960px) {
  .page-disclaimer .doc-hero-inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    align-items: start;
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-disclaimer .doc-hero-figure {
    margin-top: 1.5rem;
    transform: rotate(-1.2deg);
  }

  .page-disclaimer .doc-layout {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-disclaimer .doc-toc {
    position: sticky;
    top: 1.5rem;
    align-self: start;
    padding-right: 1rem;
    border-right: 2px solid var(--line);
  }

  .page-disclaimer .doc-toc-list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: .1rem;
  }

  .page-disclaimer .doc-fold-head {
    padding: 1.1rem 1.4rem;
  }

  .page-disclaimer .doc-fold-body {
    padding: .1rem 1.4rem 1.6rem;
  }
}

@media (min-width: 1240px) {
  .page-disclaimer .doc-layout {
    grid-template-columns: 250px minmax(0, 1fr);
  }
}

/* 动效克制 */
@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .doc-rule,
  .page-disclaimer .doc-fold,
  .page-disclaimer .doc-fold-head::after,
  .page-disclaimer .doc-toc-link,
  .page-disclaimer .doc-top-link,
  .page-disclaimer .doc-link {
    transition: none;
  }

  .page-disclaimer .doc-rule:hover {
    transform: none;
  }

  .page-disclaimer .doc-hero-figure {
    transform: none;
  }
}

@media print {
  .page-disclaimer .doc-hero::before,
  .page-disclaimer .doc-hero::after,
  .page-disclaimer .doc-toc,
  .page-disclaimer .doc-foot {
    display: none;
  }

  .page-disclaimer .doc-fold {
    box-shadow: none;
    border-color: #000;
    break-inside: avoid;
  }

  .page-disclaimer .doc-fold-head::after {
    content: "";
  }
}