.page-disclaimer {
  --disc-rail-w: 246px;
  --disc-rule: rgba(29, 39, 82, 0.9);
  --disc-rule-soft: rgba(29, 39, 82, 0.55);
  --disc-grid: rgba(37, 214, 232, 0.07);
  --disc-panel: rgba(14, 21, 51, 0.72);
}

/* 面包屑 */
.page-disclaimer > .breadcrumb {
  padding-top: clamp(18px, 3vw, 30px);
  padding-bottom: 4px;
  font-size: var(--t-xs);
  color: var(--slate-300);
}
.page-disclaimer > .breadcrumb a {
  color: var(--cyan-200);
  text-decoration: none;
}
.page-disclaimer > .breadcrumb a:hover {
  color: var(--lime-400);
}

/* 首屏 */
.page-disclaimer .disc-hero {
  position: relative;
  padding: clamp(22px, 3.6vw, 42px) 0 clamp(30px, 4.6vw, 58px);
  isolation: isolate;
}
.page-disclaimer .disc-hero__mesh {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, var(--disc-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--disc-grid) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(125% 95% at 16% 0%, #000 6%, transparent 72%);
  mask-image: radial-gradient(125% 95% at 16% 0%, #000 6%, transparent 72%);
  pointer-events: none;
}
.page-disclaimer .disc-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 38px);
  align-items: end;
}
.page-disclaimer .disc-hero__lead h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(34px, 5.4vw, 56px);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--white-050);
}
.page-disclaimer .disc-hero__lead .lede {
  margin: 16px 0 0;
  max-width: 56ch;
  color: var(--slate-300);
  font-size: var(--t-sm);
  line-height: 1.8;
}
.page-disclaimer .disc-hero__figure {
  margin: 0;
  border: 1px solid var(--disc-rule);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-900);
}
.page-disclaimer .disc-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* 主体两栏 */
.page-disclaimer .disc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 48px);
  padding-top: clamp(26px, 3.8vw, 46px);
  padding-bottom: clamp(52px, 7vw, 100px);
}

/* 左侧条款索引 */
.page-disclaimer .disc-rail {
  align-self: start;
}
.page-disclaimer .disc-rail__title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-200);
}
.page-disclaimer .disc-rail__title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--disc-rule);
}
.page-disclaimer .disc-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-disclaimer .disc-rail__list a {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 9px 12px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--slate-300);
  font-size: var(--t-xs);
  line-height: 1.55;
  text-decoration: none;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}
.page-disclaimer .disc-rail__list a:hover {
  color: var(--white-050);
  background: rgba(37, 214, 232, 0.07);
}
.page-disclaimer .disc-rail__list a[aria-current="true"] {
  color: var(--white-050);
  border-left-color: var(--lime-400);
  background: linear-gradient(90deg, rgba(168, 240, 60, 0.14), rgba(168, 240, 60, 0) 78%);
}
.page-disclaimer .disc-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
}
.page-disclaimer .disc-rail__list a[aria-current="true"] .disc-rail__num {
  color: var(--lime-400);
}

/* 章节 */
.page-disclaimer .disc-section {
  padding: clamp(26px, 3.6vw, 42px) 0;
  border-top: 1px solid var(--disc-rule-soft);
}
.page-disclaimer .disc-section:first-child {
  border-top: 0;
  padding-top: 0;
}
.page-disclaimer .disc-section__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 1.8vw, 22px);
  align-items: baseline;
  margin-bottom: clamp(14px, 1.8vw, 22px);
}
.page-disclaimer .disc-section__num {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: 0.1em;
  color: var(--cyan-400);
  text-decoration: none;
  padding-top: .3em;
}
.page-disclaimer .disc-section__num:hover {
  color: var(--lime-400);
}
.page-disclaimer .disc-section__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(21px, 2.5vw, 28px);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--white-050);
}
.page-disclaimer .disc-section__body p {
  margin: 0 0 14px;
  max-width: 66ch;
  color: var(--slate-300);
  font-size: var(--t-sm);
  line-height: 1.78;
}
.page-disclaimer .disc-section__body p:last-child {
  margin-bottom: 0;
}

/* 条款条目 */
.page-disclaimer .disc-clauses {
  list-style: none;
  margin: 18px 0 20px;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-disclaimer .disc-clause {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 1.6vw, 18px);
  padding: 14px 18px;
  border-left: 2px solid var(--ink-700);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: linear-gradient(90deg, var(--disc-panel), rgba(14, 21, 51, 0));
}
.page-disclaimer .disc-clause--accent {
  border-left-color: var(--cyan-400);
  background: linear-gradient(90deg, rgba(37, 214, 232, 0.09), rgba(37, 214, 232, 0) 82%);
}
.page-disclaimer .disc-clause__num {
  padding-top: .28em;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan-200);
  text-decoration: none;
  border-bottom: 1px dotted rgba(157, 235, 245, 0.4);
}
.page-disclaimer .disc-clause__num:hover {
  color: var(--lime-400);
  border-bottom-color: var(--lime-400);
}
.page-disclaimer .disc-clause__text {
  margin: 0;
  color: var(--slate-300);
  font-size: var(--t-sm);
  line-height: 1.75;
}
.page-disclaimer .disc-clause__lead {
  color: var(--white-050);
  font-weight: 600;
  margin-right: 2px;
}

/* 补充说明与尾段 */
.page-disclaimer .disc-after {
  margin-top: 4px;
}
.page-disclaimer .disc-note {
  margin: 0;
  padding: 14px 20px;
  border-left: 2px solid var(--cyan-200);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: rgba(37, 214, 232, 0.05);
  color: var(--slate-300);
  font-size: var(--t-xs);
  line-height: 1.78;
}
.page-disclaimer .disc-tail {
  position: relative;
  margin-top: clamp(30px, 4vw, 52px);
  padding: clamp(26px, 3.4vw, 44px) clamp(20px, 2.8vw, 38px);
  border: 1px solid var(--disc-rule-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.page-disclaimer .disc-tail::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--disc-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--disc-grid) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(95% 105% at 100% 100%, #000 4%, transparent 72%);
  mask-image: radial-gradient(95% 105% at 100% 100%, #000 4%, transparent 72%);
  pointer-events: none;
}
.page-disclaimer .disc-tail > * {
  position: relative;
}

/* 中屏：正文与标题之间加一条纵向细线 */
@media (min-width: 720px) {
  .page-disclaimer .disc-section__body {
    padding-left: clamp(26px, 3vw, 44px);
    border-left: 1px solid var(--disc-rule-soft);
  }
  .page-disclaimer .disc-tail .disc-section__body {
    border-left-color: var(--disc-rule);
  }
}

/* 宽屏：左侧索引常驻 */
@media (min-width: 960px) {
  .page-disclaimer .disc-layout {
    grid-template-columns: var(--disc-rail-w) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 84px);
  }
  .page-disclaimer .disc-rail {
    position: sticky;
    top: calc(var(--topbar-h) + 28px);
    max-height: calc(100vh - var(--topbar-h) - 56px);
    overflow-y: auto;
    scrollbar-width: thin;
  }
  .page-disclaimer .disc-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  }
  .page-disclaimer .disc-clause {
    padding: 15px 22px;
  }
}

/* 窄屏：索引收成吸顶横滑条 */
@media (max-width: 959px) {
  .page-disclaimer .disc-rail {
    position: sticky;
    top: var(--topbar-h);
    z-index: 5;
    margin-inline: calc(var(--gutter) * -1);
    padding: 10px var(--gutter) 6px;
    background: rgba(8, 13, 31, 0.94);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--disc-rule-soft);
  }
  .page-disclaimer .disc-rail__title {
    display: none;
  }
  .page-disclaimer .disc-rail__list {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .page-disclaimer .disc-rail__list::-webkit-scrollbar {
    display: none;
  }
  .page-disclaimer .disc-rail__list li {
    flex: 0 0 auto;
  }
  .page-disclaimer .disc-rail__list a {
    grid-template-columns: auto auto;
    gap: 8px;
    padding: 8px 12px;
    border-left: 0;
    border-bottom: 2px solid transparent;
    border-radius: var(--r-sm) var(--r-sm) 0 0;
    white-space: nowrap;
  }
  .page-disclaimer .disc-rail__list a[aria-current="true"] {
    background: none;
    border-bottom-color: var(--lime-400);
  }
}

@media (max-width: 480px) {
  .page-disclaimer .disc-clause {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }
  .page-disclaimer .disc-clause__num {
    justify-self: start;
  }
}
</main>