.page-disclaimer {
  --dc-narrow: 780px;
  --dc-paper-muted: rgba(11, 35, 29, 0.7);
  --dc-paper-line: rgba(11, 35, 29, 0.16);
  position: relative;
  background-color: var(--ink);
  color: var(--text);
  overflow-x: clip;
}

.page-disclaimer::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(43, 227, 199, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(43, 227, 199, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
}

.page-disclaimer > * {
  position: relative;
  z-index: 1;
}

/* ---------- 首屏框景 ---------- */
.dc-hero {
  position: relative;
  margin-top: 18px;
  padding: clamp(26px, 5.5vw, 54px) clamp(20px, 4.5vw, 48px);
  border: 1px solid var(--line);
  background:
    linear-gradient(160deg, rgba(13, 38, 32, 0.92), rgba(6, 23, 19, 0.55) 70%);
}

.dc-hero__corner {
  position: absolute;
  width: 18px;
  height: 18px;
  border: 1px solid var(--gold);
  pointer-events: none;
}

.dc-hero__corner--tl { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.dc-hero__corner--tr { top: -1px; right: -1px; border-left: 0; border-bottom: 0; }
.dc-hero__corner--bl { bottom: -1px; left: -1px; border-right: 0; border-top: 0; }
.dc-hero__corner--br { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

.dc-hero__code {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.dc-hero__title {
  margin: 0;
  font-size: clamp(30px, 5.4vw, 52px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.08;
  max-width: 20ch;
}

.dc-hero__lede {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.dc-hero__meta {
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.dc-hero__meta-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.dc-hero__meta-item dt {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.dc-hero__meta-item dd {
  margin: 0;
  font-size: 14px;
  color: var(--text);
}

@media (min-width: 760px) {
  .dc-hero__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px 24px;
  }
  .dc-hero__meta-item {
    flex-direction: column;
    gap: 6px;
  }
}

/* ---------- 章节索引带 ---------- */
.dc-toc {
  margin-top: 26px;
}

.dc-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.dc-toc__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 13px 16px;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  border-right: 1px solid var(--line);
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.dc-toc__link .mono {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.dc-toc__link:hover,
.dc-toc__link:focus-visible {
  color: var(--cyan);
  background-color: rgba(43, 227, 199, 0.07);
}

/* ---------- 条款正文 ---------- */
.dc-stream {
  display: grid;
  gap: clamp(38px, 6vw, 62px);
  padding-block: clamp(38px, 6vw, 68px);
}

.dc-sec {
  max-width: var(--dc-narrow);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.dc-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--line);
}

.dc-sec__title {
  margin: 0;
  font-size: clamp(21px, 3vw, 29px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.dc-sec__lede {
  margin: 16px 0 22px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.dc-sec__after {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.dc-sec__after a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 227, 199, 0.4);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.dc-sec__after a:hover,
.dc-sec__after a:focus-visible {
  color: var(--gold-b);
  border-bottom-color: var(--gold-b);
}

.dc-cl {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.dc-cl__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 560px) {
  .dc-cl__row {
    grid-template-columns: 66px minmax(0, 1fr);
    gap: 4px 18px;
  }
}

.dc-cl__num {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
  padding-top: 4px;
}

.dc-cl__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
}

/* ---------- 米白公告区：版本与周期 ---------- */
.dc-cycle {
  background-color: var(--paper);
  color: var(--paper-ink);
  border-left: 4px solid var(--gold);
  padding-block: clamp(42px, 7vw, 78px);
}

.dc-cycle .dc-sec--paper {
  max-width: var(--dc-narrow);
  scroll-margin-top: calc(var(--header-h) + 24px);
  margin: 0;
}

.dc-cycle .dc-sec__head { border-bottom-color: var(--dc-paper-line); }
.dc-cycle .dc-sec__title { color: var(--paper-ink); }
.dc-cycle .dc-sec__lede { color: var(--dc-paper-muted); }
.dc-cycle .index-num { color: var(--teal); }

.dc-cycle__fig {
  margin: 4px 0 30px;
  border: 1px solid var(--dc-paper-line);
  background-color: #E7E3D5;
}

.dc-cycle__fig .media-frame__cap {
  color: var(--dc-paper-muted);
}

.dc-ticks {
  list-style: none;
  margin: 0 0 30px;
  padding: 0;
  border-top: 1px solid var(--dc-paper-line);
}

.dc-tick {
  --dc-dot: var(--gold);
  position: relative;
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr);
  gap: 0 16px;
  padding: 15px 0;
  border-bottom: 1px solid var(--dc-paper-line);
}

.dc-tick--teal { --dc-dot: var(--teal); }
.dc-tick--violet { --dc-dot: var(--violet); }
.dc-tick--amber { --dc-dot: var(--amber); }

.dc-tick:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

.dc-tick__dot {
  width: 9px;
  height: 9px;
  margin-top: 7px;
  background-color: var(--dc-dot);
}

.dc-tick__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 16px;
}

.dc-tick__label {
  font-size: 15px;
  font-weight: 700;
  color: var(--paper-ink);
}

.dc-tick__val {
  font-family: var(--f-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--dc-dot);
}

.dc-tick__note {
  margin: 5px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--dc-paper-muted);
}

@media (hover: hover) and (min-width: 900px) {
  .dc-tick__note {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height var(--dur-slow) var(--ease), opacity var(--dur) var(--ease);
  }
  .dc-tick:hover .dc-tick__note,
  .dc-tick:focus .dc-tick__note {
    max-height: 88px;
    opacity: 1;
  }
}

.dc-cl--paper {
  border-top-color: var(--dc-paper-line);
}

.dc-cl--paper .dc-cl__row {
  border-bottom-color: var(--dc-paper-line);
}

.dc-cl--paper .dc-cl__num {
  color: var(--teal);
}

.dc-cl--paper .dc-cl__text {
  color: var(--paper-ink);
}

/* ---------- 联系方式 ---------- */
.dc-contact {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.dc-contact .contact-list__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 560px) {
  .dc-contact .contact-list__item {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 0 20px;
    align-items: baseline;
  }
}

.dc-contact .contact-list__key {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.dc-contact .contact-list__val {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

/* ---------- 收束分隔带 ---------- */
.dc-close {
  height: 26px;
  border-bottom: 1px solid var(--line);
  background-image: repeating-linear-gradient(
    to right,
    var(--line) 0 1px,
    transparent 1px 26px
  );
}
</main>