/* ===== 使用说明与声明 · 页面前缀 disc- ===== */

.page-disclaimer {
  --disc-rail-w: 228px;
  --disc-read: 70ch;
  position: relative;
  background-color: var(--c-deep);
  color: var(--c-mist);
}

/* ---------- 首屏 ---------- */

.page-disclaimer .disc-hero {
  position: relative;
  padding-top: clamp(20px, 3.4vw, 40px);
  background:
    radial-gradient(125% 130% at 100% 0%, rgba(255, 90, 31, .17), transparent 58%),
    linear-gradient(180deg, var(--c-midnight), var(--c-deep));
  border-bottom: 1px solid var(--c-line);
  overflow: hidden;
}

.page-disclaimer .disc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(37, 64, 107, .34) 0 1px, transparent 1px 78px),
    repeating-linear-gradient(0deg, rgba(37, 64, 107, .2) 0 1px, transparent 1px 78px);
  pointer-events: none;
}

.page-disclaimer .disc-hero .container {
  position: relative;
}

.page-disclaimer .disc-hero__grid {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
  align-items: end;
  margin-top: clamp(18px, 3vw, 34px);
}

.page-disclaimer .disc-hero__text h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 6vw, 70px);
  line-height: 1.03;
  letter-spacing: -.02em;
  color: var(--c-mist);
}

.page-disclaimer .disc-hero__lede {
  margin: 0;
  max-width: 54ch;
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.8;
  color: var(--c-steel);
}

.page-disclaimer .disc-hero__meta {
  display: inline-flex;
  align-items: center;
  margin: 18px 0 0;
  padding: 6px 14px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: rgba(6, 20, 40, .66);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--c-steel);
}

.page-disclaimer .disc-hero__media {
  position: relative;
  margin-top: clamp(26px, 4vw, 50px);
  border-top: 1px solid var(--c-line);
}

.page-disclaimer .disc-hero__media::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: min(38%, 420px);
  height: 3px;
  background: linear-gradient(90deg, var(--c-lava), var(--c-neon));
  z-index: 2;
}

.page-disclaimer .disc-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  filter: saturate(.78) brightness(.86);
}

/* ---------- 正文双栏 ---------- */

.page-disclaimer .disc-body {
  display: grid;
  gap: clamp(24px, 3.6vw, 48px);
  align-items: start;
  padding-top: clamp(32px, 5vw, 72px);
  padding-bottom: clamp(24px, 3vw, 40px);
}

.page-disclaimer .disc-toc {
  min-width: 0;
}

.page-disclaimer .disc-toc__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--c-steel);
}

.page-disclaimer .disc-toc__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-disclaimer .disc-toc__list::-webkit-scrollbar {
  display: none;
}

.page-disclaimer .disc-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: rgba(20, 49, 92, .32);
  color: var(--c-steel);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-disclaimer .disc-toc__link:hover,
.page-disclaimer .disc-toc__link:focus-visible {
  color: var(--c-mist);
  border-color: var(--c-lava);
  background: rgba(255, 90, 31, .12);
}

.page-disclaimer .disc-toc__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-lava-soft);
}

/* ---------- 条款 ---------- */

.page-disclaimer .disc-clauses {
  display: grid;
  gap: clamp(44px, 6vw, 80px);
  min-width: 0;
  max-width: 880px;
}

.page-disclaimer .clause {
  position: relative;
  scroll-margin-top: calc(var(--bar-h) + 28px);
}

.page-disclaimer .clause__head {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 22px);
  margin-bottom: clamp(16px, 2vw, 22px);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--c-line);
}

.page-disclaimer .clause__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--c-lava);
}

.page-disclaimer .clause__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 2.8vw, 32px);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--c-mist);
}

.page-disclaimer .clause__lead {
  margin: 0 0 clamp(14px, 1.8vw, 20px);
  max-width: var(--disc-read);
  font-size: clamp(16px, 1.35vw, 17px);
  line-height: 1.85;
  color: var(--c-steel);
}

.page-disclaimer .clause__list {
  counter-reset: disc-item;
  display: grid;
  gap: clamp(12px, 1.6vw, 18px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .clause__list li {
  counter-increment: disc-item;
  display: grid;
  grid-template-columns: 2.1em minmax(0, 1fr);
  gap: 10px;
  max-width: var(--disc-read);
  font-size: clamp(15px, 1.25vw, 16.5px);
  line-height: 1.85;
  color: var(--c-steel);
}

.page-disclaimer .clause__list li::before {
  content: counter(disc-item, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: inherit;
  color: var(--c-lava-soft);
}

.page-disclaimer .disc-link {
  color: var(--c-lava-soft);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color .18s var(--ease), text-decoration-color .18s var(--ease);
}

.page-disclaimer .disc-link:hover,
.page-disclaimer .disc-link:focus-visible {
  color: var(--c-mist);
  text-decoration-color: var(--c-neon);
}

/* ---------- 更正入口色带 ---------- */

.page-disclaimer .disc-cta {
  position: relative;
  margin-top: clamp(44px, 7vw, 96px);
  padding: clamp(30px, 5vw, 58px) 0;
  border-top: 1px solid var(--c-line);
  background:
    linear-gradient(115deg, rgba(255, 90, 31, .2), rgba(53, 240, 192, .1) 62%, transparent 94%),
    var(--c-midnight);
  overflow: hidden;
}

.page-disclaimer .disc-cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: min(46%, 560px);
  height: 3px;
  background: linear-gradient(90deg, var(--c-lava), var(--c-neon));
}

.page-disclaimer .disc-cta::after {
  content: "";
  position: absolute;
  right: -8%;
  bottom: -30%;
  width: 46%;
  height: 160%;
  background: repeating-linear-gradient(112deg, rgba(37, 64, 107, .55) 0 1px, transparent 1px 26px);
  pointer-events: none;
}

.page-disclaimer .disc-cta__inner {
  position: relative;
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  align-items: center;
}

.page-disclaimer .disc-cta__title {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--c-mist);
}

.page-disclaimer .disc-cta__note {
  margin: 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-steel);
}

.page-disclaimer .disc-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 回到顶部 ---------- */

.page-disclaimer .disc-top {
  position: fixed;
  right: clamp(14px, 2vw, 24px);
  bottom: clamp(14px, 2vw, 24px);
  z-index: 30;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: rgba(6, 20, 40, .9);
  color: var(--c-steel);
  font-size: 13px;
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-disclaimer .disc-top:hover,
.page-disclaimer .disc-top:focus-visible {
  color: var(--c-mist);
  border-color: var(--c-lava);
}

/* ---------- 平板与桌面 ---------- */

@media (min-width: 880px) {
  .page-disclaimer .disc-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: clamp(32px, 5vw, 64px);
  }
}

@media (min-width: 900px) {
  .page-disclaimer .disc-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 72px);
  }
}

@media (min-width: 960px) {
  .page-disclaimer .disc-body {
    grid-template-columns: var(--disc-rail-w) minmax(0, 1fr);
    gap: clamp(38px, 5vw, 88px);
  }

  .page-disclaimer .disc-toc {
    position: sticky;
    top: calc(var(--bar-h) + 30px);
  }

  .page-disclaimer .disc-toc__list {
    display: block;
    overflow: visible;
    padding: 0;
    border-left: 1px solid var(--c-line);
  }

  .page-disclaimer .disc-toc__link {
    display: grid;
    grid-template-columns: 2.2em minmax(0, 1fr);
    width: 100%;
    margin-left: -1px;
    padding: 10px 0 10px 14px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: none;
    font-size: 15px;
    white-space: normal;
  }

  .page-disclaimer .disc-toc__link:hover,
  .page-disclaimer .disc-toc__link:focus-visible {
    border-left-color: var(--c-lava);
    background: linear-gradient(90deg, rgba(255, 90, 31, .14), transparent 82%);
  }
}

/* ---------- 窄屏收束 ---------- */

@media (max-width: 560px) {
  .page-disclaimer .disc-hero__media img {
    aspect-ratio: 16 / 9;
  }

  .page-disclaimer .clause__list li {
    grid-template-columns: 1.9em minmax(0, 1fr);
    gap: 8px;
  }

  .page-disclaimer .disc-top {
    font-size: 12px;
    padding: 8px 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .disc-toc__link,
  .page-disclaimer .disc-link,
  .page-disclaimer .disc-top {
    transition: none;
  }
}