.page-disclaimer {
  --disc-cut: 14px;
  --disc-rule: rgba(22, 73, 122, 0.55);
  --disc-rule-soft: rgba(22, 73, 122, 0.32);
  position: relative;
  isolation: isolate;
  padding: clamp(20px, 4vw, 44px) 0 clamp(48px, 8vw, 104px);
  background:
    radial-gradient(900px 520px at 88% -6%, rgba(22, 73, 122, 0.45), transparent 70%),
    radial-gradient(700px 460px at -8% 44%, rgba(255, 106, 26, 0.07), transparent 72%),
    var(--c-abyss);
  color: var(--c-white);
}

.page-disclaimer::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(22, 73, 122, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 73, 122, 0.15) 1px, transparent 1px);
  background-size: 60px 60px;
  -webkit-mask-image: radial-gradient(130% 82% at 50% 0%, #000 22%, transparent 76%);
  mask-image: radial-gradient(130% 82% at 50% 0%, #000 22%, transparent 76%);
}

/* ---------- 面包屑 ---------- */
.page-disclaimer .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}

/* ---------- 首屏 ---------- */
.disc-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3.4vw, 38px);
  align-items: center;
  margin-top: clamp(18px, 3vw, 30px);
  padding-bottom: clamp(24px, 4vw, 46px);
  border-bottom: 1px solid var(--disc-rule-soft);
}

.disc-hero__title {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 6.4vw, 50px);
  line-height: 1.08;
  letter-spacing: -0.012em;
  color: var(--c-white);
}

.disc-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-mist);
}

.disc-hero__meta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 18px 0 0;
  padding: 6px 12px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-gold);
  border: var(--line-gold);
  background: rgba(201, 162, 75, 0.06);
}

.disc-hero__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(201, 162, 75, 0.34);
  background: var(--c-tactical);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--disc-cut)), calc(100% - var(--disc-cut)) 100%, 0 100%);
}

.disc-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.disc-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(118deg, transparent 54%, rgba(255, 106, 26, 0.55) 54.4%, rgba(255, 106, 26, 0.55) 55%, transparent 55.4%);
}

/* ---------- 移动端目录浮层 ---------- */
.disc-toc {
  margin-top: clamp(18px, 3vw, 26px);
  border: 1px solid var(--disc-rule);
  background: rgba(14, 44, 74, 0.72);
}

.disc-toc__toggle {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--c-white);
}

.disc-toc__toggle::-webkit-details-marker {
  display: none;
}

.disc-toc__toggle::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--c-orange);
}

.disc-toc[open] .disc-toc__toggle::after {
  content: "–";
}

.disc-toc__toggle .mono {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-gold);
}

.disc-toc__hint {
  font-size: 13px;
  font-weight: 500;
  color: var(--c-mist);
}

.disc-toc__list {
  margin: 0;
  padding: 4px 16px 16px;
  list-style: none;
  display: grid;
  gap: 2px;
  border-top: 1px solid var(--disc-rule-soft);
}

.disc-toc__list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 0;
  font-size: 14px;
  color: var(--c-mist);
  text-decoration: none;
  border-bottom: 1px dotted var(--disc-rule-soft);
}

.disc-toc__list a .mono {
  font-size: 11px;
  color: var(--c-gold);
}

.disc-toc__list a:hover,
.disc-toc__list a:focus-visible {
  color: var(--c-white);
}

/* ---------- 主体 8/4 ---------- */
.disc-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.2vw, 40px);
  margin-top: clamp(22px, 3.6vw, 38px);
}

.disc-doc {
  position: relative;
  padding: clamp(20px, 3.4vw, 42px);
  background: linear-gradient(180deg, rgba(14, 44, 74, 0.94), rgba(6, 26, 46, 0.94));
  border: 1px solid var(--disc-rule);
  clip-path: polygon(var(--disc-cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--disc-cut));
}

.disc-doc::before {
  content: "";
  position: absolute;
  top: 0;
  left: var(--disc-cut);
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-gold), rgba(201, 162, 75, 0));
}

/* ---------- 条款章节 ---------- */
.disc-sec {
  scroll-margin-top: 108px;
}

.disc-sec + .disc-sec {
  position: relative;
  margin-top: clamp(26px, 3.8vw, 42px);
  padding-top: clamp(24px, 3.6vw, 40px);
  border-top: 1px solid var(--disc-rule-soft);
}

.disc-sec + .disc-sec::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 96px;
  height: 3px;
  background: linear-gradient(90deg, var(--c-orange), rgba(255, 106, 26, 0));
  transform: skewX(-32deg);
  transform-origin: left center;
}

.disc-sec__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}

.disc-sec__num {
  flex: none;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--c-gold);
  border-bottom: 1px solid rgba(201, 162, 75, 0.5);
  padding-bottom: 2px;
}

.disc-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.7vw, 25px);
  line-height: 1.28;
  color: var(--c-white);
}

.disc-sec p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--c-mist);
}

.disc-sec p:last-child {
  margin-bottom: 0;
}

.disc-sec__lead {
  padding-left: 13px;
  border-left: 3px solid var(--c-pulse);
  color: var(--c-white) !important;
  font-weight: 600;
}

/* 导出格式清单 */
.disc-formats {
  margin: 16px 0 16px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--disc-rule-soft);
  border: 1px solid var(--disc-rule-soft);
}

.disc-formats li {
  display: grid;
  grid-template-columns: 62px 1fr;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: rgba(22, 73, 122, 0.28);
}

.disc-formats__key {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-orange);
  text-align: center;
  border: 1px solid rgba(255, 106, 26, 0.42);
  padding: 4px 0;
}

.disc-formats__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-mist);
}

/* 规则条目 */
.disc-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 11px;
}

.disc-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-mist);
}

.disc-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 11px;
  height: 2px;
  background: var(--c-pulse);
}

/* 数据条 */
.disc-strip {
  margin: 18px 0 16px;
  border: 1px solid var(--disc-rule-soft);
  background: rgba(6, 26, 46, 0.62);
}

.disc-strip .stat__value {
  color: var(--c-white);
}

/* ---------- 右侧索引 ---------- */
.disc-side {
  display: none;
  padding: 18px;
  border: 1px solid var(--disc-rule);
  background: rgba(14, 44, 74, 0.62);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.disc-side__title {
  margin: 0 0 12px;
  padding-bottom: 10px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-gold);
  border-bottom: 1px solid var(--disc-rule-soft);
}

.disc-side__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
}

.disc-side__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 8px 9px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--c-mist);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--speed) var(--ease), background-color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.disc-side__link .mono {
  flex: none;
  font-size: 11px;
  color: var(--c-gold);
}

.disc-side__link:hover,
.disc-side__link:focus-visible {
  color: var(--c-white);
  background: rgba(22, 73, 122, 0.55);
  border-left-color: var(--c-pulse);
}

.disc-side__note {
  margin: 16px 0 0;
  padding-top: 12px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--c-mist);
  border-top: 1px solid var(--disc-rule-soft);
}

/* ---------- 底部引导条 ---------- */
.disc-dock {
  position: sticky;
  bottom: 0;
  z-index: 4;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: clamp(26px, 4vw, 44px);
  padding: 16px clamp(16px, 3vw, 26px);
  background: linear-gradient(90deg, rgba(14, 44, 74, 0.98), rgba(6, 26, 46, 0.98));
  border: 1px solid rgba(201, 162, 75, 0.42);
}

.disc-dock::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 120px;
  height: 3px;
  background: linear-gradient(90deg, var(--c-pulse), rgba(180, 255, 61, 0));
  transform: skewX(-32deg);
  transform-origin: left center;
}

.disc-dock__text {
  margin: 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-mist);
}

.disc-dock__text strong {
  color: var(--c-white);
  font-weight: 700;
}

.disc-dock__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 焦点可见性 ---------- */
.page-disclaimer a:focus-visible,
.page-disclaimer summary:focus-visible {
  outline: 2px solid var(--c-pulse);
  outline-offset: 2px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .disc-formats li {
    grid-template-columns: 78px 1fr;
  }
}

@media (min-width: 1024px) {
  .disc-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }

  .disc-toc {
    display: none;
  }

  .disc-shell {
    grid-template-columns: minmax(0, 1fr) 282px;
    grid-template-areas: "doc side";
    align-items: start;
  }

  .disc-doc {
    grid-area: doc;
  }

  .disc-side {
    display: block;
    grid-area: side;
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1280px) {
  .disc-hero__lede {
    font-size: 16px;
  }
}

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