.page-disclaimer {
  --u-num-col: 48px;
  --u-gap: clamp(18px, 3vw, 40px);
  display: block;
}

/* ---------- 顶部横幅 ---------- */
.page-disclaimer .u-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--bg-mid) 0%, var(--bg-deep) 100%);
}

.page-disclaimer .u-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .26;
  filter: saturate(.75);
}

.page-disclaimer .u-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 95% at 78% 12%, rgba(53, 230, 210, .16), transparent 62%),
    radial-gradient(90% 70% at 12% 90%, rgba(122, 92, 255, .14), transparent 68%),
    linear-gradient(180deg, rgba(5, 7, 15, .5), rgba(5, 7, 15, .96));
  pointer-events: none;
}

.page-disclaimer .u-hero__inner {
  position: relative;
  z-index: 2;
  padding-top: clamp(30px, 5.5vw, 66px);
  padding-bottom: clamp(34px, 6vw, 74px);
}

.page-disclaimer .u-hero__eyebrow {
  margin: 20px 0 0;
  font-size: .72rem;
  letter-spacing: .22em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-disclaimer .u-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 5.4vw, 3.3rem);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--white);
  max-width: 22ch;
  text-shadow: 0 0 18px rgba(53, 230, 210, .22);
}

.page-disclaimer .u-hero__lead {
  margin: 20px 0 0;
  max-width: 64ch;
  color: var(--silver);
  font-size: clamp(.95rem, 1.5vw, 1.05rem);
  line-height: 1.85;
  letter-spacing: .01em;
}

/* ---------- 章节快速跳转 ---------- */
.page-disclaimer .u-jump {
  border-bottom: 1px solid var(--line);
  background: var(--bg-mid);
}

.page-disclaimer .u-jump__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.page-disclaimer .u-jump__item {
  flex: 1 1 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--mist);
  font-size: .84rem;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s ease-out, border-color .18s ease-out, background-color .18s ease-out;
}

.page-disclaimer .u-jump__item .mono {
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-disclaimer .u-jump__item:hover,
.page-disclaimer .u-jump__item:focus-visible {
  color: var(--white);
  border-color: var(--cyan-dim);
  background: rgba(53, 230, 210, .07);
}

/* ---------- 主体 ---------- */
.page-disclaimer .u-body {
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-disclaimer .u-sec {
  display: grid;
  grid-template-columns: var(--u-num-col) 1fr;
  gap: var(--u-gap);
  padding-top: clamp(30px, 4.6vw, 54px);
  padding-bottom: clamp(30px, 4.6vw, 54px);
  border-bottom: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--bar-h) + 40px);
  transition: background-color .2s ease-out;
}

.page-disclaimer .u-sec:target {
  background: linear-gradient(90deg, rgba(53, 230, 210, .07), transparent 62%);
}

.page-disclaimer .u-sec__num {
  align-self: stretch;
  position: relative;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan);
  transition: color .18s ease-out, text-shadow .18s ease-out;
}

.page-disclaimer .u-sec__num::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  right: calc(var(--u-gap) * -0.5);
  width: 1px;
  background: var(--line);
}

.page-disclaimer .u-sec:hover .u-sec__num {
  color: var(--white);
  text-shadow: 0 0 16px rgba(53, 230, 210, .45);
}

.page-disclaimer .u-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.22rem, 2.4vw, 1.65rem);
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-disclaimer .u-sec__lead {
  margin: 12px 0 0;
  max-width: 68ch;
  color: var(--silver);
  font-size: 1rem;
  line-height: 1.82;
}

/* ---------- 要点清单 ---------- */
.page-disclaimer .u-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-disclaimer .u-list li {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 10px;
  align-items: start;
  color: var(--silver);
  font-size: .94rem;
  line-height: 1.8;
}

.page-disclaimer .u-mark {
  font-size: .74rem;
  line-height: 2.3;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-disclaimer .u-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-dim);
  transition: color .18s ease-out, border-color .18s ease-out;
}

.page-disclaimer .u-link:hover,
.page-disclaimer .u-link:focus-visible {
  color: var(--white);
  border-color: var(--white);
}

/* ---------- 排查链 ---------- */
.page-disclaimer .u-chain {
  margin-top: 26px;
  padding: 18px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(19, 28, 51, .88), rgba(10, 16, 32, .9));
}

.page-disclaimer .u-chain__intro {
  margin: 0 0 16px;
  max-width: 66ch;
  color: var(--mist);
  font-size: .86rem;
  line-height: 1.75;
}

.page-disclaimer .u-chain__flow {
  display: flex;
  align-items: stretch;
  gap: 10px;
}

.page-disclaimer .u-chain__arrow {
  align-self: center;
  display: flex;
  flex: 0 0 auto;
  color: var(--mist);
  opacity: .55;
}

.page-disclaimer .u-step {
  flex: 1 1 0;
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  transition: border-color .18s ease-out, background-color .18s ease-out;
}

.page-disclaimer .u-step:hover,
.page-disclaimer .u-step[open] {
  border-color: var(--cyan-dim);
  background: var(--panel-hi);
}

.page-disclaimer .u-step__sum {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  cursor: pointer;
  list-style: none;
  color: var(--silver);
  font-size: .87rem;
  font-weight: 700;
  line-height: 1.5;
}

.page-disclaimer .u-step__sum::-webkit-details-marker {
  display: none;
}

.page-disclaimer .u-step__idx {
  flex: 0 0 auto;
  font-size: .78rem;
  color: var(--cyan);
}

.page-disclaimer .u-step__label {
  flex: 1 1 auto;
  min-width: 0;
}

.page-disclaimer .u-step__chev {
  flex: 0 0 auto;
  color: var(--mist);
  transition: transform .18s ease-out;
}

.page-disclaimer .u-step[open] .u-step__chev {
  transform: rotate(180deg);
}

.page-disclaimer .u-step__body {
  margin: 0;
  padding: 12px 14px 14px;
  border-top: 1px solid var(--line-soft);
  color: var(--mist);
  font-size: .85rem;
  line-height: 1.78;
}

/* ---------- 平板 ---------- */
@media (max-width: 900px) {
  .page-disclaimer .u-sec {
    --u-gap: 22px;
  }

  .page-disclaimer .u-chain__flow {
    flex-wrap: wrap;
  }

  .page-disclaimer .u-step {
    flex: 1 1 100%;
  }

  .page-disclaimer .u-chain__arrow {
    align-self: flex-start;
    margin-left: 16px;
    transform: rotate(90deg);
  }
}

/* ---------- 移动端 ---------- */
@media (max-width: 620px) {
  .page-disclaimer {
    --u-num-col: 34px;
    --u-gap: 14px;
  }

  .page-disclaimer .u-hero__title {
    max-width: none;
  }

  .page-disclaimer .u-jump__item {
    flex: 1 1 calc(50% - 4px);
    padding: 9px 10px;
    font-size: .8rem;
    gap: 7px;
  }

  .page-disclaimer .u-sec {
    grid-template-columns: var(--u-num-col) 1fr;
    padding-top: 26px;
    padding-bottom: 26px;
  }

  .page-disclaimer .u-sec__num {
    font-size: 1.15rem;
    padding-top: 3px;
  }

  .page-disclaimer .u-list li {
    grid-template-columns: 20px 1fr;
    gap: 8px;
    font-size: .9rem;
  }

  .page-disclaimer .u-mark {
    line-height: 2.35;
  }

  .page-disclaimer .u-chain {
    padding: 14px;
  }
}

/* ---------- 打印 ---------- */
@media print {
  .page-disclaimer .u-hero__bg,
  .page-disclaimer .u-hero::after,
  .page-disclaimer .u-jump,
  .page-disclaimer .u-chain__arrow {
    display: none !important;
  }

  .page-disclaimer .u-hero,
  .page-disclaimer .u-sec,
  .page-disclaimer .u-chain,
  .page-disclaimer .u-step {
    background: #fff !important;
    border-color: #b8b8b8 !important;
  }

  .page-disclaimer .u-hero__title,
  .page-disclaimer .u-sec__title {
    color: #000 !important;
    text-shadow: none !important;
  }

  .page-disclaimer .u-hero__lead,
  .page-disclaimer .u-sec__lead,
  .page-disclaimer .u-list li,
  .page-disclaimer .u-chain__intro,
  .page-disclaimer .u-step__body {
    color: #222 !important;
  }

  .page-disclaimer .u-sec__num,
  .page-disclaimer .u-mark,
  .page-disclaimer .u-link {
    color: #0a6b62 !important;
  }

  .page-disclaimer .u-chain__flow {
    display: block;
  }

  .page-disclaimer .u-step {
    margin-bottom: 10px;
    break-inside: avoid;
  }

  .page-disclaimer .u-step__body {
    display: block !important;
  }
}