.page-disclaimer {
  --disc-hang: 92px;
  --disc-lift: min(14vw, 190px);
  --disc-rail: 84px;
  position: relative;
  background: var(--bg);
  color: var(--ink);
  padding-bottom: calc(var(--ticker-h) + 64px);
}

/* ---------- 顶部抽象横幅 ---------- */
.page-disclaimer__banner {
  position: relative;
  display: block;
  margin: 0;
  width: 100%;
  height: clamp(160px, 30vw, 320px);
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
  background: var(--bg-2);
}

.page-disclaimer__banner img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  opacity: 0.58;
  filter: saturate(0.85) contrast(1.06);
}

.page-disclaimer__banner::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(5, 7, 15, 0.35) 0%, rgba(5, 7, 15, 0.94) 92%),
    repeating-linear-gradient(96deg, rgba(0, 229, 255, 0.08) 0 1px, transparent 1px 84px);
  pointer-events: none;
}

.page-disclaimer__banner::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: min(46%, 520px);
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), rgba(0, 229, 255, 0));
  z-index: 2;
  pointer-events: none;
}

/* ---------- 面包屑 ---------- */
.page-disclaimer .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-top: 30px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.page-disclaimer .crumbs a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 240ms var(--ease);
}

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

.page-disclaimer .crumbs span[aria-hidden="true"] {
  color: var(--mist);
}

/* ---------- 首屏声明 ---------- */
.page-disclaimer__intro {
  display: grid;
  gap: 18px;
  padding-top: 34px;
  padding-bottom: 54px;
  border-bottom: 1px solid var(--line-soft);
}

.page-disclaimer__intro .index-tag {
  color: var(--cyan);
  margin: 0;
}

.page-disclaimer__title {
  margin: 0;
  max-width: 24ch;
  font-size: clamp(28px, 5.2vw, 54px);
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-disclaimer__lede {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-disclaimer__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 22px;
  margin: 6px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-disclaimer__meta .data-num {
  font-size: 22px;
  font-weight: 700;
  color: var(--orange);
  margin-right: 4px;
  letter-spacing: -0.01em;
}

/* ---------- 条款版式 ---------- */
.page-disclaimer__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  padding-top: 52px;
}

.page-disclaimer__terms {
  min-width: 0;
}

.page-disclaimer__terms > * + * {
  margin-top: 48px;
}

.terms-block {
  scroll-margin-top: calc(var(--header-h) + 28px);
}

.terms-block__head {
  display: grid;
  gap: 10px;
  margin-bottom: 26px;
}

.terms-block__title {
  position: relative;
  margin: 0;
  padding-left: 16px;
  font-size: clamp(20px, 2.5vw, 27px);
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.35;
  color: var(--ink);
}

.terms-block__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3em;
  width: 3px;
  height: 0.84em;
  border-radius: 1px;
  background: var(--cyan);
}

.terms-block__note {
  margin: 0;
  padding-left: 16px;
  max-width: 54ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-dim);
}

.term-list {
  list-style: none;
  display: grid;
  gap: 26px;
  margin: 0;
  padding: 0;
}

.term {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  column-gap: 12px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.term__num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.08em;
  color: var(--cyan);
  transition: color 240ms var(--ease);
}

.term:target .term__num {
  color: var(--orange);
}

.term__body {
  min-width: 0;
}

.term__title {
  margin: 0 0 7px;
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1.5;
  color: var(--ink);
}

.term__text {
  margin: 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.term__text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.4);
  transition: border-color 240ms var(--ease), color 240ms var(--ease);
}

.term__text a:hover,
.term__text a:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--cyan);
}

/* ---------- 一行索引分隔 ---------- */
.terms-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mist);
}

.terms-divider__range {
  color: var(--orange);
  font-weight: 700;
  letter-spacing: 0.18em;
}

.terms-divider__label {
  position: relative;
  padding-right: 14px;
}

.terms-divider__label::after {
  content: "";
  position: absolute;
  top: 50%;
  left: calc(100% + 8px);
  width: clamp(40px, 22vw, 220px);
  height: 1px;
  background: var(--line-strong);
}

/* ---------- 右侧条款区间侧标 ---------- */
.page-disclaimer__rail {
  display: none;
}

.rail-list {
  list-style: none;
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
}

.rail-link {
  display: block;
  padding: 5px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-align: right;
  color: var(--mist);
  text-decoration: none;
  border-right: 2px solid transparent;
  transition: color 240ms var(--ease), border-color 240ms var(--ease);
}

.rail-link:hover,
.rail-link:focus-visible {
  color: var(--ink);
  border-right-color: var(--line-strong);
}

.rail-link.is-active {
  color: var(--cyan);
  border-right-color: var(--cyan);
}

/* ---------- 返回顶部 ---------- */
.page-disclaimer__to-top {
  position: fixed;
  right: 16px;
  bottom: calc(var(--ticker-h) + 20px);
  z-index: 30;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(11, 18, 32, 0.88);
  backdrop-filter: blur(10px);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 240ms var(--ease), transform 240ms var(--ease), border-color 240ms var(--ease);
}

.page-disclaimer__to-top.is-visible {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.page-disclaimer__to-top:hover,
.page-disclaimer__to-top:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-disclaimer__to-top-icon {
  font-size: 14px;
  line-height: 1;
  color: var(--cyan);
}

/* ---------- 焦点可见性 ---------- */
.page-disclaimer a:focus-visible,
.page-disclaimer button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 窄屏 ---------- */
@media (max-width: 479px) {
  .page-disclaimer__banner {
    height: 148px;
  }

  .page-disclaimer .crumbs {
    padding-top: 22px;
    font-size: 11px;
    letter-spacing: 0.12em;
  }

  .page-disclaimer__intro {
    padding-top: 26px;
    padding-bottom: 40px;
    gap: 14px;
  }

  .page-disclaimer__meta {
    gap: 4px 16px;
  }

  .page-disclaimer__meta .data-num {
    font-size: 19px;
  }

  .page-disclaimer__layout {
    padding-top: 40px;
    gap: 0;
  }

  .page-disclaimer__terms > * + * {
    margin-top: 40px;
  }

  .term {
    grid-template-columns: 28px minmax(0, 1fr);
    column-gap: 10px;
  }

  .term__num {
    font-size: 13px;
  }

  .term__text {
    font-size: 15px;
    line-height: 1.76;
  }

  .terms-divider__label::after {
    display: none;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-disclaimer__layout {
    grid-template-columns: minmax(0, 1fr) var(--disc-rail);
    column-gap: 56px;
    align-items: start;
  }

  .page-disclaimer__terms {
    padding-left: var(--disc-lift);
  }

  .term {
    position: relative;
    display: block;
    padding-left: 0;
  }

  .term__num {
    position: absolute;
    top: 4px;
    left: calc(-1 * var(--disc-hang));
    width: 68px;
    text-align: right;
    font-size: 19px;
    letter-spacing: 0.06em;
    line-height: 1.2;
  }

  .term__title {
    font-size: 18px;
  }

  .page-disclaimer__rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 40px);
    align-self: start;
    padding-top: 4px;
  }
}

@media (min-width: 1280px) {
  .page-disclaimer__lede {
    font-size: 17px;
  }

  .page-disclaimer__intro {
    padding-top: 44px;
    padding-bottom: 64px;
  }
}

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