.page-disclaimer {
  --sheet-bg: var(--paper-100);
  --sheet-ink: #0A090C;
  --sheet-ink-soft: #45423D;
  --sheet-line: rgba(10, 9, 12, 0.14);
  --sheet-line-strong: rgba(10, 9, 12, 0.30);
  --sheet-copper: #8E5A1E;
  --sheet-copper-soft: rgba(201, 135, 60, 0.42);

  position: relative;
  overflow-x: clip;
  padding: clamp(20px, 4vw, 40px) 0 clamp(56px, 9vw, 110px);
  background: var(--ink-950);
}

.page-disclaimer ::selection {
  background: var(--cyan-400);
  color: var(--ink-950);
}

.page-disclaimer a:focus-visible,
.page-disclaimer .doc-term:focus-visible {
  outline: 2px solid var(--copper-500);
  outline-offset: 2px;
}

.page-disclaimer .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-disclaimer .eyebrow {
  color: var(--sheet-copper);
}

/* 纸张叠层 */
.doc-stack {
  position: relative;
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.doc-stack::before,
.doc-stack::after {
  content: "";
  position: absolute;
  pointer-events: none;
  border: 1px solid var(--line-soft);
  background: rgba(242, 239, 232, 0.07);
}

.doc-stack::before {
  inset: 12px -9px -14px 9px;
}

.doc-stack::after {
  inset: 22px -16px -24px 16px;
  background: rgba(242, 239, 232, 0.035);
}

.doc-sheet {
  position: relative;
  z-index: 1;
  background: var(--sheet-bg);
  color: var(--sheet-ink);
  border: 1px solid var(--sheet-line-strong);
  box-shadow: 0 34px 70px -34px rgba(0, 0, 0, 0.9);
}

.doc-sheet__inner {
  padding: clamp(26px, 5vw, 64px) clamp(20px, 5vw, 72px) clamp(28px, 5vw, 56px);
}

/* 封面 */
.doc-cover {
  padding-bottom: clamp(24px, 4vw, 38px);
}

.doc-cover h1 {
  margin: 10px 0 18px;
  font-size: clamp(40px, 8vw, 76px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--sheet-ink);
}

.doc-cover__lede {
  margin: 0 0 22px;
  max-width: 64ch;
  font-size: clamp(15.5px, 1.8vw, 18.5px);
  line-height: 1.8;
  color: var(--sheet-ink-soft);
}

.doc-cover__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.doc-cover__meta span {
  padding: 5px 11px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--sheet-copper);
  background: rgba(201, 135, 60, 0.09);
  border: 1px solid var(--sheet-copper-soft);
}

/* 首屏图 */
.doc-figure {
  margin: 0 0 clamp(28px, 4vw, 46px);
  background: var(--ink-950);
  border: 1px solid var(--sheet-line-strong);
}

.doc-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.doc-figure__caption {
  display: block;
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--sheet-ink-soft);
  background: var(--sheet-bg);
  border-top: 1px solid var(--sheet-line);
}

/* 目录 */
.doc-toc {
  padding: clamp(18px, 3vw, 26px) 0;
  margin-bottom: clamp(26px, 4vw, 44px);
  border-top: 2px solid var(--sheet-ink);
  border-bottom: 1px solid var(--sheet-line);
}

.doc-toc__label {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sheet-copper);
}

.doc-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.doc-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 4px;
  font-size: 15px;
  color: var(--sheet-ink);
  text-decoration: none;
  border-bottom: 1px solid var(--sheet-line);
  transition: color 140ms ease-out, padding-left 140ms ease-out, border-color 140ms ease-out;
}

.doc-toc__list a:hover,
.doc-toc__list a:focus-visible {
  color: var(--sheet-copper);
  border-color: var(--sheet-copper-soft);
  padding-left: 12px;
}

.doc-toc__list span {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--sheet-copper);
}

/* 条款 */
.doc-clause {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  padding: clamp(20px, 3vw, 30px) 0;
  border-top: 1px solid var(--sheet-line);
  scroll-margin-top: 90px;
}

.doc-clause:first-of-type {
  border-top: 2px solid var(--sheet-ink);
}

.doc-clause__num {
  padding-top: 4px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--sheet-copper);
}

.doc-clause__title {
  margin: 0 0 12px;
  font-size: clamp(19px, 2.4vw, 26px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--sheet-ink);
}

.doc-clause__body {
  position: relative;
  max-width: 66ch;
}

.doc-clause__body p {
  margin: 0 0 0.85em;
  font-size: clamp(14.5px, 1.6vw, 16.5px);
  line-height: 1.85;
  color: var(--sheet-ink-soft);
}

.doc-clause__body p:last-child {
  margin-bottom: 0;
}

.doc-clause__body a {
  color: var(--sheet-copper);
  text-decoration: none;
  border-bottom: 1px solid var(--sheet-copper-soft);
  transition: border-color 140ms ease-out, color 140ms ease-out;
}

.doc-clause__body a:hover,
.doc-clause__body a:focus-visible {
  color: var(--sheet-ink);
  border-color: var(--sheet-ink);
}

/* 术语提示 */
.doc-term {
  position: relative;
  display: inline;
  color: var(--sheet-ink);
  border-bottom: 1px dashed var(--sheet-copper);
  cursor: help;
}

.doc-term::after {
  content: attr(data-tip);
  position: absolute;
  left: 0;
  bottom: calc(100% + 8px);
  width: max-content;
  max-width: min(260px, 68vw);
  padding: 8px 10px;
  font-size: 12px;
  line-height: 1.65;
  font-weight: 400;
  color: var(--paper-100);
  background: var(--ink-800);
  border: 1px solid var(--sheet-copper-soft);
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity 140ms ease-out, transform 140ms ease-out, visibility 140ms;
  pointer-events: none;
  z-index: 6;
}

.doc-term:hover::after,
.doc-term:focus-visible::after {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* 页尾记录 */
.doc-record {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 24px;
  margin-top: clamp(28px, 4vw, 44px);
  padding-top: 20px;
  border-top: 2px solid var(--sheet-ink);
}

.doc-record__text {
  margin: 0;
  max-width: 62ch;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--sheet-ink-soft);
}

.doc-record__text a {
  color: var(--sheet-copper);
  text-decoration: none;
  border-bottom: 1px solid var(--sheet-copper-soft);
}

.doc-record__meta {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--sheet-copper);
}

/* 相关页面与回到顶部 */
.doc-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.doc-links__item {
  padding: 8px 14px;
  font-size: 13px;
  color: var(--sheet-ink);
  text-decoration: none;
  border: 1px solid var(--sheet-line-strong);
  transition: color 140ms ease-out, border-color 140ms ease-out, background 140ms ease-out;
}

.doc-links__item:hover,
.doc-links__item:focus-visible {
  color: var(--sheet-copper);
  border-color: var(--sheet-copper);
  background: rgba(201, 135, 60, 0.08);
}

.doc-top {
  display: inline-block;
  margin-top: 26px;
  padding-bottom: 3px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--sheet-copper);
  text-decoration: none;
  border-bottom: 1px solid var(--sheet-copper-soft);
  transition: color 140ms ease-out, border-color 140ms ease-out;
}

.doc-top:hover,
.doc-top:focus-visible {
  color: var(--sheet-ink);
  border-color: var(--sheet-ink);
}

@media (min-width: 720px) {
  .doc-toc__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 36px;
  }

  .doc-clause {
    grid-template-columns: 88px 1fr;
    gap: 28px;
  }

  .doc-clause__num {
    font-size: 14px;
    text-align: right;
  }
}

@media (max-width: 640px) {
  .doc-stack {
    width: calc(100% - 28px);
  }

  .doc-stack::before {
    inset: 8px -6px -10px 6px;
  }

  .doc-stack::after {
    inset: 15px -11px -17px 11px;
  }

  .doc-figure img {
    aspect-ratio: 4 / 3;
  }

  .doc-record {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer * {
    transition-duration: 0.01ms !important;
  }
}