.page-disclaimer {
  --dsc-rail: 200px;
  background: var(--ink);
  color: var(--on-dark);
  padding-bottom: clamp(4rem, 9vw, 8rem);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .dsc-hero {
  position: relative;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: calc(var(--header-h) + clamp(2rem, 5vw, 3.75rem)) var(--gutter) 0;
  overflow: hidden;
}

.page-disclaimer .dsc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(58% 76% at 12% 0%, rgba(62, 214, 192, .10), transparent 66%),
    radial-gradient(44% 58% at 88% 18%, rgba(212, 160, 23, .13), transparent 70%);
  pointer-events: none;
}

.page-disclaimer .dsc-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3rem);
  align-items: end;
  border-top: 1px solid var(--line);
  padding-top: clamp(1.75rem, 3.5vw, 2.75rem);
}

.page-disclaimer .dsc-hero__grid::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: clamp(56px, 9vw, 128px);
  height: 3px;
  background: var(--amber);
}

.page-disclaimer .dsc-hero__text,
.page-disclaimer .dsc-hero__figure {
  position: relative;
}

.page-disclaimer .breadcrumbs ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem;
  list-style: none;
  margin: 0 0 1.6rem;
  padding: 0;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .08em;
}

.page-disclaimer .breadcrumbs li + li::before {
  content: "/";
  margin-right: .55rem;
  color: var(--gray-green);
}

.page-disclaimer .breadcrumbs a {
  color: var(--gray-green);
  text-decoration: none;
}

.page-disclaimer .breadcrumbs a:hover,
.page-disclaimer .breadcrumbs a:focus-visible {
  color: var(--amber-soft);
}

.page-disclaimer .dsc-hero h1 {
  margin: 0 0 1.4rem;
  font-family: var(--font-sans);
  font-size: clamp(2.1rem, 6vw, 4.2rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 14em;
}

.page-disclaimer .dsc-h1__mark {
  color: var(--amber-soft);
}

.page-disclaimer .dsc-lede {
  margin: 0;
  max-width: 32em;
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  line-height: 1.85;
  color: var(--on-dark-dim);
}

.page-disclaimer .dsc-hero__figure {
  margin: 0;
  background: var(--ink-lift);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-disclaimer .dsc-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  opacity: .92;
}

/* ---------- 主体骨架 ---------- */
.page-disclaimer .dsc-shell {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(3.25rem, 8vw, 6.5rem) var(--gutter) 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2.25rem, 5vw, 4rem);
}

/* ---------- 章节导轨 ---------- */
.page-disclaimer .dsc-rail {
  overflow-x: auto;
  padding-bottom: .5rem;
}

.page-disclaimer .dsc-rail .index-label {
  margin: 0 0 .85rem;
  color: var(--amber);
}

.page-disclaimer .dsc-rail ul {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
  white-space: nowrap;
}

.page-disclaimer .dsc-rail a {
  display: block;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--gray-green);
  text-decoration: none;
  transition: color .25s var(--ease);
}

.page-disclaimer .dsc-rail a:hover,
.page-disclaimer .dsc-rail a:focus-visible {
  color: var(--amber-soft);
}

.page-disclaimer .dsc-rail a[aria-current="true"] {
  color: var(--amber);
}

/* ---------- 条款主体 ---------- */
.page-disclaimer .dsc-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(3rem, 7vw, 5.5rem);
}

.page-disclaimer .dsc-clause {
  scroll-margin-top: calc(var(--header-h-scrolled) + 2rem);
}

.page-disclaimer .dsc-clause__no {
  display: flex;
  align-items: center;
  gap: .85rem;
  margin: 0 0 .7rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .2em;
  color: var(--amber);
}

.page-disclaimer .dsc-clause__no::after {
  content: "";
  flex: 0 0 auto;
  width: clamp(44px, 8vw, 88px);
  height: 1px;
  background: var(--line);
}

.page-disclaimer .dsc-clause__title {
  margin: 0 0 1.5rem;
  font-family: var(--font-sans);
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-disclaimer .dsc-clause__content p {
  max-width: 34em;
  margin: 0 0 1.15rem;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--on-dark);
}

.page-disclaimer .dsc-clause__content p:last-of-type {
  margin-bottom: 0;
}

/* ---------- 版本对照 ---------- */
.page-disclaimer .dsc-diff {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1.85rem 0 1.6rem;
  max-width: 46em;
}

.page-disclaimer .dsc-diff__card {
  position: relative;
  padding: 1.35rem 1.5rem 1.55rem;
  background: var(--paper);
  color: var(--char);
  border-top: 3px solid var(--amber);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-disclaimer .dsc-diff__card--c {
  border-top-color: var(--coral);
}

.page-disclaimer .dsc-diff__card summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: .75rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--char);
}

.page-disclaimer .dsc-diff__card summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer .dsc-diff__card summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 1.15rem;
  line-height: 1;
  color: var(--coral);
}

.page-disclaimer .dsc-diff__card[open] summary::after {
  content: "–";
}

.page-disclaimer .dsc-diff__card p {
  max-width: none;
  margin: .9rem 0 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: #3c3c3c;
}

/* ---------- 相关入口 ---------- */
.page-disclaimer .dsc-links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 2rem;
  max-width: 46em;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-disclaimer .dsc-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem 1.4rem;
  background: var(--ink-lift);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  transition: background .25s var(--ease), color .25s var(--ease);
}

.page-disclaimer .dsc-links a::after {
  content: "→";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--amber);
}

.page-disclaimer .dsc-links a:hover,
.page-disclaimer .dsc-links a:focus-visible {
  background: var(--ink-deep);
  color: var(--amber-soft);
}

/* ---------- 窄屏细化 ---------- */
@media (max-width: 479px) {
  .page-disclaimer .dsc-rail ul {
    gap: .95rem;
    font-size: .72rem;
  }

  .page-disclaimer .dsc-clause__content p {
    font-size: 1rem;
    line-height: 1.8;
  }
}

/* ---------- 平板以上 ---------- */
@media (min-width: 720px) {
  .page-disclaimer .dsc-diff {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }

  .page-disclaimer .dsc-links {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 960px) {
  .page-disclaimer .dsc-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: clamp(2.5rem, 5vw, 5rem);
  }

  .page-disclaimer .dsc-hero__figure img {
    aspect-ratio: 16 / 9;
  }
}

/* ---------- 桌面双栏：左侧导轨 + 右侧条款 ---------- */
@media (min-width: 1000px) {
  .page-disclaimer .dsc-shell {
    grid-template-columns: var(--dsc-rail) minmax(0, 1fr);
    gap: clamp(3rem, 6vw, 6rem);
    align-items: start;
  }

  .page-disclaimer .dsc-rail {
    position: sticky;
    top: calc(var(--header-h-scrolled) + 2.5rem);
    overflow-x: visible;
    padding-bottom: 0;
  }

  .page-disclaimer .dsc-rail ul {
    display: block;
    white-space: normal;
    border-left: 1px solid var(--line);
  }

  .page-disclaimer .dsc-rail li + li {
    margin-top: .15rem;
  }

  .page-disclaimer .dsc-rail a {
    margin-left: -1px;
    padding: .55rem 0 .55rem 1rem;
    border-left: 1px solid transparent;
    transition: color .25s var(--ease), border-color .25s var(--ease);
  }

  .page-disclaimer .dsc-rail a[aria-current="true"] {
    border-left-color: var(--amber);
    color: var(--amber-soft);
  }
}

/* ---------- 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .dsc-rail a,
  .page-disclaimer .dsc-links a {
    transition: none;
  }
}