.page-disclaimer {
  --u-body: rgba(239, 234, 225, 0.78);
  --u-rail: clamp(180px, 16vw, 248px);
  background: var(--ink);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-disclaimer .u-hero {
  position: relative;
  isolation: isolate;
  padding: calc(var(--header-h) + clamp(36px, 6vw, 88px)) 0 clamp(28px, 4vw, 52px);
}

.page-disclaimer .u-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(36, 48, 63, 0.55) 1px, transparent 1px) 0 0 / 64px 64px,
    linear-gradient(180deg, rgba(36, 48, 63, 0.55) 1px, transparent 1px) 0 0 / 64px 64px,
    radial-gradient(90% 70% at 88% 6%, rgba(34, 224, 214, 0.13), transparent 62%);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 52%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, #000 52%, transparent 100%);
  pointer-events: none;
}

.page-disclaimer .u-hero__title {
  margin: 14px 0 0;
  max-width: 20ch;
  font-family: var(--sans);
  font-size: clamp(32px, 6.2vw, 92px);
  font-weight: 200;
  line-height: 1.04;
  letter-spacing: -0.022em;
  color: var(--paper);
}

.page-disclaimer .u-hero__lede {
  margin-top: clamp(18px, 2.4vw, 28px);
  max-width: 58ch;
  font-size: clamp(15.5px, 1.3vw, 18.5px);
  line-height: 1.78;
  color: var(--u-body);
}

.page-disclaimer .u-hero__index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: clamp(26px, 3.6vw, 44px) 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .u-hero__index li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--fog);
}

.page-disclaimer .u-hero__index li::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  background: var(--cyan);
}

.page-disclaimer .u-hero__index li:nth-child(2)::before { background: var(--orange); }
.page-disclaimer .u-hero__index li:nth-child(3)::before { background: var(--clay); }
.page-disclaimer .u-hero__index li:nth-child(4)::before { background: var(--cyan); }
.page-disclaimer .u-hero__index li:nth-child(5)::before { background: var(--fog); }
.page-disclaimer .u-hero__index li:nth-child(6)::before { background: var(--moss); }

.page-disclaimer .u-hero__media {
  margin: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-disclaimer .u-hero__media.media-frame--wide {
  aspect-ratio: 3 / 1;
}

.page-disclaimer .u-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 对照阅读主体 ---------- */

.page-disclaimer .u-board {
  padding: clamp(44px, 6vw, 92px) 0 clamp(40px, 5vw, 72px);
}

.page-disclaimer .u-board__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 44px);
}

.page-disclaimer .u-board__rail {
  align-self: start;
}

.page-disclaimer .u-board__railtitle {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--fog);
}

.page-disclaimer .u-board__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .u-board__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 13px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--paper);
  background: var(--rock);
  text-decoration: none;
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-disclaimer .u-board__link:hover,
.page-disclaimer .u-board__link:focus-visible {
  color: var(--cyan);
}

.page-disclaimer .u-board__idx {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--fog);
}

.page-disclaimer .u-board__body {
  min-width: 0;
}

/* ---------- 条款 ---------- */

.page-disclaimer .u-clause {
  padding-top: clamp(26px, 3.4vw, 44px);
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 28px);
}

.page-disclaimer .u-clause + .u-clause {
  margin-top: clamp(30px, 4.4vw, 56px);
}

.page-disclaimer .u-cat {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--catc, var(--fog));
}

.page-disclaimer .u-cat::before {
  content: "";
  flex: none;
  width: 14px;
  height: 3px;
  background: var(--catc, var(--fog));
}

.page-disclaimer .u-cat--moss { --catc: var(--moss); }
.page-disclaimer .u-cat--orange { --catc: var(--orange); }
.page-disclaimer .u-cat--clay { --catc: var(--clay); }
.page-disclaimer .u-cat--cyan { --catc: var(--cyan); }
.page-disclaimer .u-cat--fog { --catc: var(--fog); }

.page-disclaimer .u-clause__title {
  margin: 0 0 16px;
  font-size: clamp(21px, 3vw, 33px);
  font-weight: 300;
  line-height: 1.24;
  letter-spacing: -0.012em;
  color: var(--paper);
}

.page-disclaimer .u-clause p {
  margin: 0 0 16px;
  max-width: 60ch;
  font-size: clamp(15.5px, 1.15vw, 17.5px);
  line-height: 1.8;
  color: var(--u-body);
}

.page-disclaimer .u-clause p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .u-num {
  display: inline-block;
  padding: 1px 7px;
  font-size: 0.95em;
  letter-spacing: 0.04em;
  color: var(--cyan);
  background: rgba(34, 224, 214, 0.1);
  border: 1px solid rgba(34, 224, 214, 0.28);
}

.page-disclaimer .u-steps {
  display: grid;
  gap: 10px;
  margin: 4px 0 18px;
  padding: 0;
  list-style: none;
}

.page-disclaimer .u-steps li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  font-size: clamp(15px, 1.1vw, 16.5px);
  line-height: 1.72;
  color: var(--u-body);
}

.page-disclaimer .u-steps__k {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.9;
  color: var(--orange);
}

.page-disclaimer .u-snippet {
  margin: 22px 0 0;
  padding: 16px 18px;
  background: var(--rock);
  border: 1px solid var(--line);
  border-left: 2px solid var(--orange);
}

.page-disclaimer .u-snippet__label {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--fog);
}

.page-disclaimer .u-snippet__code {
  margin: 0;
  font-family: var(--mono);
  font-size: clamp(13px, 1.5vw, 16px);
  letter-spacing: 0.02em;
  color: var(--cyan);
  word-break: break-word;
}

/* ---------- 页脚条款目录 ---------- */

.page-disclaimer .u-tail {
  padding: clamp(30px, 4vw, 54px) 0 clamp(52px, 7vw, 96px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(27, 36, 48, 0.6), rgba(7, 12, 20, 0));
}

.page-disclaimer .u-tail__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .u-tail__item a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 15px 12px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--fog);
  text-decoration: none;
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-disclaimer .u-tail__item a:hover,
.page-disclaimer .u-tail__item a:focus-visible {
  color: var(--cyan);
  background: rgba(34, 224, 214, 0.06);
}

.page-disclaimer .u-tail__k {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--fog);
}

.page-disclaimer .u-tail__note {
  margin: clamp(22px, 3vw, 34px) 0 0;
  max-width: 66ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--fog);
}

.page-disclaimer .u-tail__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 214, 0.4);
}

.page-disclaimer .u-tail__note a:hover,
.page-disclaimer .u-tail__note a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 响应式 ---------- */

@media (max-width: 720px) {
  .page-disclaimer .u-hero__media.media-frame--wide {
    aspect-ratio: 16 / 9;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .u-board__grid {
    grid-template-columns: var(--u-rail) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 76px);
  }

  .page-disclaimer .u-board__rail {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }

  .page-disclaimer .u-board__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    border-left: 1px solid var(--line);
  }

  .page-disclaimer .u-board__link {
    margin-left: -1px;
    padding: 12px 14px 12px 16px;
    background: none;
    border-left: 2px solid transparent;
    color: var(--fog);
  }

  .page-disclaimer .u-board__link:hover,
  .page-disclaimer .u-board__link:focus-visible {
    color: var(--paper);
    border-left-color: var(--cyan);
    background: rgba(27, 36, 48, 0.6);
  }
}

@media (min-width: 760px) {
  .page-disclaimer .u-tail__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-disclaimer .u-tail__list {
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }

  .page-disclaimer .u-board__grid {
    gap: clamp(48px, 6vw, 104px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer *,
  .page-disclaimer *::before,
  .page-disclaimer *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}