.page-disclaimer {
  --clause-pad: clamp(36px, 5.6vw, 72px);
  --num-w: 40px;
  --list-gap: clamp(8px, 1.4vw, 14px);
  background: var(--sand);
}

/* ── 首屏 ────────────────────────────────── */
.page-disclaimer .usage-hero {
  position: relative;
  padding: clamp(30px, 5.4vw, 64px) 0 clamp(28px, 4.6vw, 54px);
  overflow: hidden;
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  top: -130px;
  right: -90px;
  width: clamp(220px, 38vw, 470px);
  height: clamp(220px, 38vw, 470px);
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, rgba(224, 138, 46, .3), rgba(224, 138, 46, 0) 68%);
  pointer-events: none;
}

.page-disclaimer .usage-hero-grid {
  position: relative;
  z-index: 1;
  row-gap: clamp(26px, 4.4vw, 46px);
  align-items: start;
}

.page-disclaimer .usage-hero h1 {
  margin: 12px 0 0;
  font-size: clamp(2.25rem, 7.2vw, 4.25rem);
  font-weight: 300;
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-disclaimer .usage-hero .lede {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 34rem;
  font-size: clamp(1.02rem, 2.1vw, 1.18rem);
  line-height: 1.85;
  color: var(--ink);
}

/* ── 条款索引面板 ─────────────────────────── */
.page-disclaimer .usage-toc {
  position: relative;
  overflow: hidden;
  background: var(--deep);
  color: var(--white);
  border-radius: var(--radius);
  padding: clamp(16px, 3vw, 26px);
}

.page-disclaimer .usage-toc::before {
  content: "";
  position: absolute;
  right: -50px;
  bottom: -70px;
  width: 170px;
  height: 170px;
  background: var(--gold);
  opacity: .22;
  border-radius: 58% 42% 46% 54% / 52% 48% 56% 44%;
  pointer-events: none;
}

.page-disclaimer .usage-toc-title {
  position: relative;
  z-index: 1;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold-lt);
}

.page-disclaimer .usage-toc-list {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-disclaimer .usage-toc-list li + li {
  border-top: 1px solid rgba(255, 255, 255, .16);
}

.page-disclaimer .usage-toc-list a {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: baseline;
  gap: 10px;
  padding: 11px 6px;
  font-size: .95rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, .9);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-disclaimer .usage-toc-list a:hover {
  background: rgba(255, 255, 255, .09);
  color: var(--white);
  transform: translateX(4px);
}

.page-disclaimer .usage-toc-list .mono-num {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold-lt);
}

/* ── 条款主体 ─────────────────────────────── */
.page-disclaimer .clause {
  padding-block: var(--clause-pad);
  border-top: 1px solid var(--line);
  background: var(--sand);
}

.page-disclaimer .clause,
.page-disclaimer .usage-breath {
  scroll-margin-top: calc(var(--top-h) + 22px);
}

.page-disclaimer .clause-grid {
  position: relative;
  display: grid;
  grid-template-columns: var(--num-w) minmax(0, 1fr);
  column-gap: 14px;
  align-items: start;
}

.page-disclaimer .clause-grid::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 2px;
  bottom: 2px;
  width: 3px;
  border-radius: 3px;
  background: var(--red);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform var(--dur) var(--ease);
}

.page-disclaimer .clause:hover .clause-grid::before,
.page-disclaimer .clause:focus-within .clause-grid::before {
  transform: scaleY(1);
}

.page-disclaimer .clause-num {
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-disclaimer .clause-title {
  margin: 0 0 .6em;
  font-size: clamp(1.45rem, 4.4vw, 2.1rem);
  font-weight: 900;
  line-height: 1.26;
  letter-spacing: -.01em;
  color: var(--teal);
}

.page-disclaimer .clause-body {
  max-width: 42rem;
}

.page-disclaimer .clause-body p {
  margin: 0 0 1em;
}

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

.page-disclaimer .clause-points {
  list-style: none;
  margin: 4px 0 1.2em;
  padding: 0;
  display: grid;
  gap: var(--list-gap);
}

.page-disclaimer .clause-points li {
  position: relative;
  padding-left: 20px;
  line-height: 1.78;
  color: var(--ink);
}

.page-disclaimer .clause-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 10px;
  height: 2px;
  border-radius: 2px;
  background: var(--gold);
}

.page-disclaimer .clause-points b {
  font-weight: 700;
  color: var(--teal);
}

.page-disclaimer .clause-note {
  max-width: 42rem;
  margin: 20px 0 1.2em;
  padding: 2px 0 2px 16px;
  border-left: 3px solid var(--teal-lt);
}

.page-disclaimer .clause-note > summary {
  display: flex;
  align-items: baseline;
  gap: 8px;
  cursor: pointer;
  font-size: .92rem;
  font-weight: 700;
  color: var(--teal);
  list-style: none;
}

.page-disclaimer .clause-note > summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer .clause-note > summary::before {
  content: "＋";
  font-family: var(--font-mono);
  font-size: .95rem;
  color: var(--red);
}

.page-disclaimer .clause-note[open] > summary::before {
  content: "－";
}

.page-disclaimer .clause-note p {
  margin: 10px 0 0;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-disclaimer .clause-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 22px;
}

.page-disclaimer .clause-actions .copy-note {
  margin: 0;
}

/* ── 中段呼吸区 ───────────────────────────── */
.page-disclaimer .usage-breath {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 5.4vw, 66px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(158deg, var(--teal-lt) 0%, #fdf8ef 60%, var(--sand) 100%);
}

.page-disclaimer .usage-breath-grid {
  display: grid;
  gap: clamp(24px, 3.8vw, 44px);
  align-items: center;
}

.page-disclaimer .usage-blob {
  background: var(--gold);
  color: var(--deep);
  border-radius: 58% 42% 46% 54% / 52% 48% 56% 44%;
  padding: clamp(30px, 6vw, 54px) clamp(24px, 5vw, 46px);
}

.page-disclaimer .usage-blob p {
  margin: 0;
  font-size: clamp(1.05rem, 2.8vw, 1.34rem);
  font-weight: 700;
  line-height: 1.62;
  letter-spacing: -.005em;
}

.page-disclaimer .usage-blob .mono-num {
  display: block;
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: .14em;
  color: rgba(14, 58, 68, .74);
}

.page-disclaimer .usage-breath-figure {
  margin: 0;
}

.page-disclaimer .usage-breath-media {
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(120deg, var(--gold-lt), var(--teal));
}

.page-disclaimer .usage-breath-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

/* ── 收尾 ────────────────────────────────── */
.page-disclaimer .usage-foot {
  display: grid;
  gap: 18px;
  padding: clamp(30px, 5vw, 56px) 0 clamp(40px, 6vw, 76px);
}

.page-disclaimer .usage-foot-text {
  margin: 0;
  max-width: 40rem;
  line-height: 1.82;
  color: var(--ink);
}

.page-disclaimer .usage-foot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ── 桌面端细化 ───────────────────────────── */
@media (min-width: 900px) {
  .page-disclaimer {
    --num-w: 118px;
  }

  .page-disclaimer .clause-grid {
    column-gap: 24px;
  }

  .page-disclaimer .clause-num {
    padding-top: 10px;
    font-size: 15px;
    letter-spacing: .18em;
  }

  .page-disclaimer .usage-breath-grid {
    grid-template-columns: 5fr 7fr;
    gap: clamp(30px, 4vw, 56px);
  }
}

@media (min-width: 760px) {
  .page-disclaimer .usage-foot {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .clause-grid::before,
  .page-disclaimer .usage-toc-list a {
    transition: none;
  }
}