/* ===== 使用规范页 · page-disclaimer ===== */
.page-disclaimer {
  --dc-pad: clamp(46px, 8vw, 88px);
  display: block;
  background: var(--c-night);
  color: var(--c-mist);
}

/* --- 首屏 --- */
.page-disclaimer .dc-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 36px) 0 clamp(42px, 7vw, 74px);
  background:
    radial-gradient(115% 85% at 8% -12%, rgba(61, 242, 192, .15), transparent 58%),
    radial-gradient(85% 65% at 96% 4%, rgba(240, 180, 41, .10), transparent 52%),
    linear-gradient(180deg, var(--c-night-deep) 0%, var(--c-night) 100%);
  border-bottom: 1px solid var(--c-line);
}

.page-disclaimer .dc-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(180deg, rgba(61, 242, 192, .032) 0 1px, transparent 1px 5px);
}

.page-disclaimer .dc-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-disclaimer .dc-hero__grid {
  display: grid;
  gap: 34px;
  margin-top: 26px;
}

.page-disclaimer .dc-hero h1 {
  margin: 16px 0 0;
  font-size: clamp(27px, 6.2vw, 48px);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-wide);
  font-weight: 800;
  color: var(--c-paper);
}

.page-disclaimer .dc-hero__lead {
  margin: 22px 0 0;
  max-width: 44em;
  font-size: var(--fs-base);
  line-height: 1.85;
  color: var(--c-mist);
}

.page-disclaimer .dc-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-top: 26px;
}

/* --- 条款索引 --- */
.page-disclaimer .dc-index {
  padding: 19px 18px 10px;
  background: linear-gradient(180deg, rgba(17, 20, 23, .96), rgba(8, 19, 15, .96));
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
}

.page-disclaimer .dc-index ol {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}

.page-disclaimer .dc-index li + li {
  border-top: 1px dashed rgba(31, 59, 52, .9);
}

.page-disclaimer .dc-index a {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 11px 4px;
  font-size: var(--fs-sm);
  line-height: 1.5;
  color: var(--c-mist);
  text-decoration: none;
  border-radius: var(--r-sm);
  transition: color .2s var(--ease);
}

.page-disclaimer .dc-index__no {
  flex: none;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--c-amber);
}

.page-disclaimer .dc-index a:hover,
.page-disclaimer .dc-index a:focus-visible {
  color: var(--c-neon);
}

/* --- 章节 --- */
.page-disclaimer .dc-section {
  padding: var(--dc-pad) 0;
  border-bottom: 1px solid var(--c-line);
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.page-disclaimer .dc-section--tint {
  background: linear-gradient(180deg, var(--c-night) 0%, var(--c-carbon) 48%, var(--c-night) 100%);
}

.page-disclaimer .dc-section--teal {
  background: linear-gradient(180deg, var(--c-night) 0%, var(--c-teal) 55%, var(--c-night) 100%);
}

.page-disclaimer .dc-head {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 14px;
  margin-bottom: 28px;
}

.page-disclaimer .dc-num {
  font-family: var(--ff-mono);
  font-size: var(--fs-sm);
  letter-spacing: .1em;
  color: var(--c-amber);
  padding-top: .5em;
}

.page-disclaimer .dc-head h2 {
  margin: 0;
  font-size: clamp(21px, 4vw, 32px);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-wide);
  font-weight: 800;
  color: var(--c-paper);
}

.page-disclaimer .dc-head__lead {
  grid-column: 2;
  margin: 12px 0 0;
  max-width: 48em;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--c-mist);
}

/* --- 版本分段切换 --- */
.page-disclaimer .dc-switch {
  display: inline-flex;
  margin: 0 0 12px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-sm);
  overflow: hidden;
  background: var(--c-carbon);
}

.page-disclaimer .dc-switch .version-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--c-mist);
  font-family: inherit;
  font-size: var(--fs-sm);
  letter-spacing: var(--ls-wide);
  padding: 10px 20px;
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease);
}

.page-disclaimer .dc-switch .version-btn + .version-btn {
  border-left: 1px solid var(--c-line);
}

.page-disclaimer .dc-switch .version-btn[aria-pressed="true"] {
  background: rgba(61, 242, 192, .13);
  color: var(--c-neon);
  box-shadow: inset 0 -2px 0 var(--c-neon);
}

.page-disclaimer .dc-switch .version-btn:focus-visible {
  outline: 2px solid var(--c-neon);
  outline-offset: -2px;
}

.page-disclaimer .dc-version-note {
  margin: 0 0 26px;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--c-mist-dim);
}

/* --- 条款列表：移动端上下结构，桌面端左标题右说明 --- */
.page-disclaimer .dc-terms {
  border-top: 1px solid var(--c-line);
}

.page-disclaimer .dc-term {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-disclaimer .dc-term__no {
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-amber);
  padding-top: .42em;
}

.page-disclaimer .dc-term__title {
  margin: 0;
  font-size: var(--fs-md);
  line-height: 1.45;
  font-weight: 700;
  letter-spacing: var(--ls-wide);
  color: var(--c-paper);
  transition: color .22s var(--ease);
}

.page-disclaimer .dc-term__body {
  grid-column: 2;
  margin: 9px 0 0;
  max-width: 46em;
  font-size: var(--fs-base);
  line-height: var(--lh-body);
  color: var(--c-mist);
}

.page-disclaimer .dc-term__body a {
  color: var(--c-neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 242, 192, .45);
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.page-disclaimer .dc-term__body a:hover {
  color: var(--c-glow);
  border-bottom-color: var(--c-glow);
}

.page-disclaimer .dc-term .mono {
  font-family: var(--ff-mono);
  color: var(--c-amber);
  font-size: .95em;
}

/* --- 批次章节的非对称双栏 --- */
.page-disclaimer .dc-batch-grid {
  display: grid;
  gap: 32px;
}

.page-disclaimer .dc-figure {
  margin: 0;
  position: relative;
}

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

/* --- 折叠补充说明 --- */
.page-disclaimer .dc-fold {
  margin-top: 26px;
  padding: 0 18px;
  background: rgba(14, 39, 33, .55);
  border: 1px dashed rgba(31, 59, 52, .95);
  border-radius: var(--r-sm);
}

.page-disclaimer .dc-fold summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 0;
  font-family: var(--ff-mono);
  font-size: var(--fs-sm);
  letter-spacing: .04em;
  color: var(--c-amber);
  transition: color .2s var(--ease);
}

.page-disclaimer .dc-fold summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer .dc-fold summary::before {
  content: "▸ ";
  color: var(--c-neon);
}

.page-disclaimer .dc-fold[open] summary::before {
  content: "▾ ";
}

.page-disclaimer .dc-fold summary:hover {
  color: var(--c-neon);
}

.page-disclaimer .dc-fold summary:focus-visible {
  outline: 2px solid var(--c-neon);
  outline-offset: 2px;
}

.page-disclaimer .dc-fold p {
  margin: 0 0 14px;
  max-width: 52em;
  font-size: var(--fs-sm);
  line-height: var(--lh-body);
  color: var(--c-mist);
}

.page-disclaimer .dc-fold p:last-child {
  margin-bottom: 18px;
}

.page-disclaimer .dc-fold a {
  color: var(--c-neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 242, 192, .45);
}

/* --- 收尾行动区 --- */
.page-disclaimer .dc-cta {
  padding: clamp(46px, 7vw, 78px) 0;
  background:
    radial-gradient(90% 120% at 86% 0%, rgba(61, 242, 192, .13), transparent 62%),
    var(--c-night-deep);
}

.page-disclaimer .dc-cta__inner {
  display: grid;
  gap: 26px;
}

.page-disclaimer .dc-cta h2 {
  margin: 10px 0 0;
  font-size: clamp(22px, 3.6vw, 32px);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-wide);
  color: var(--c-paper);
}

.page-disclaimer .dc-cta p {
  margin: 12px 0 0;
  max-width: 42em;
  font-size: var(--fs-sm);
  line-height: var(--lh-body);
  color: var(--c-mist);
}

.page-disclaimer .dc-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* --- 窄屏微调 --- */
@media (max-width: 479px) {
  .page-disclaimer .dc-switch {
    display: flex;
    width: 100%;
  }

  .page-disclaimer .dc-switch .version-btn {
    flex: 1;
    text-align: center;
    padding: 10px 8px;
  }

  .page-disclaimer .dc-head {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 4px 10px;
  }

  .page-disclaimer .dc-term {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 4px 10px;
  }
}

/* --- 桌面布局 --- */
@media (min-width: 960px) {
  .page-disclaimer .dc-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 64px;
    align-items: start;
    margin-top: 34px;
  }

  .page-disclaimer .dc-head {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 6px 20px;
    margin-bottom: 34px;
  }

  .page-disclaimer .dc-term {
    grid-template-columns: 58px minmax(0, 232px) minmax(0, 1fr);
    gap: 0 36px;
    align-items: start;
    padding: 26px 0;
  }

  .page-disclaimer .dc-term__title {
    grid-column: 2;
    grid-row: 1;
  }

  .page-disclaimer .dc-term__body {
    grid-column: 3;
    grid-row: 1;
    margin: 0;
  }

  .page-disclaimer .dc-term__no {
    padding-top: .35em;
  }

  .page-disclaimer .dc-batch-grid {
    grid-template-columns: minmax(0, 1.22fr) minmax(0, 0.78fr);
    gap: 56px;
    align-items: start;
  }

  .page-disclaimer .dc-figure {
    margin-top: 22px;
  }

  .page-disclaimer .dc-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 48px;
  }
}

@media (hover: hover) {
  .page-disclaimer .dc-term:hover .dc-term__title {
    color: var(--c-neon);
  }
}