.page-disclaimer {
  --usage-clause-gap: clamp(26px, 3.4vw, 42px);
  --usage-acid-soft: rgba(200, 255, 61, 0.18);
  --usage-orange-soft: rgba(255, 90, 31, 0.14);
  background: var(--paper);
  color: var(--blue-900);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  overflow: hidden;
  color: var(--paper);
  padding-block: clamp(22px, 4vw, 40px) clamp(40px, 7vw, 84px);
  background:
    radial-gradient(120% 95% at 88% -10%, rgba(255, 90, 31, 0.42), transparent 58%),
    linear-gradient(158deg, var(--blue-900) 0%, var(--blue-700) 52%, var(--blue-500) 100%);
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    116deg,
    rgba(244, 246, 250, 0.055) 0 2px,
    transparent 2px 10px
  );
}

.page-disclaimer .usage-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-disclaimer .usage-hero .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-hero .breadcrumb__link {
  color: rgba(244, 246, 250, 0.72);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  transition: color 0.2s var(--ease);
}

.page-disclaimer .usage-hero .breadcrumb__link:hover {
  color: var(--acid);
}

.page-disclaimer .usage-hero .breadcrumb__sep {
  color: rgba(244, 246, 250, 0.34);
  font-size: 12px;
}

.page-disclaimer .usage-hero .breadcrumb__current {
  color: var(--acid);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-disclaimer .usage-hero .eyebrow {
  color: var(--orange-300);
  margin-top: clamp(28px, 4vw, 46px);
}

.page-disclaimer .usage-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 44px);
  align-items: end;
}

.page-disclaimer .usage-title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(40px, 9vw, 80px);
  line-height: 0.96;
  letter-spacing: -0.035em;
  color: var(--paper);
}

.page-disclaimer .usage-lead {
  margin: 20px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.8;
  color: rgba(244, 246, 250, 0.84);
}

/* 条款索引 */
.page-disclaimer .usage-index {
  padding: 20px 20px 24px;
  border: 1px solid rgba(244, 246, 250, 0.22);
  background: rgba(8, 21, 43, 0.42);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-disclaimer .usage-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--orange-300);
}

.page-disclaimer .usage-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
}

.page-disclaimer .usage-index__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 0;
  font-size: 14px;
  text-decoration: none;
  color: rgba(244, 246, 250, 0.84);
  border-bottom: 1px dashed rgba(244, 246, 250, 0.14);
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-disclaimer .usage-index__link:hover {
  color: var(--acid);
  padding-left: 4px;
}

.page-disclaimer .usage-index__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
}

/* ---------- 条款主体 ---------- */
.page-disclaimer .usage-clauses {
  background: var(--paper);
}

.page-disclaimer .usage-section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.25;
  letter-spacing: -0.025em;
  color: var(--blue-900);
}

.page-disclaimer .usage-section-sub {
  margin: 12px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-disclaimer .clause-list {
  margin-top: clamp(28px, 4vw, 48px);
}

.page-disclaimer .clause {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding-block: var(--usage-clause-gap);
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-disclaimer .clause:last-child {
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .clause__no {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 3.2vw, 40px);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--orange);
}

.page-disclaimer .clause__no svg {
  width: 20px;
  height: 20px;
  flex: none;
  color: var(--blue-500);
}

.page-disclaimer .clause__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 2.3vw, 26px);
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--blue-900);
}

.page-disclaimer .clause__text {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--blue-700);
}

.page-disclaimer .clause__text--hint {
  margin: 16px 0 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.page-disclaimer .clause__list,
.page-disclaimer .grant__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-disclaimer .clause__list li,
.page-disclaimer .grant__list li {
  position: relative;
  padding-left: 22px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--blue-700);
}

.page-disclaimer .clause__list li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 0.72em;
  width: 7px;
  height: 7px;
  background: var(--orange);
  transform: rotate(45deg);
}

.page-disclaimer .grant__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.6em;
  width: 9px;
  height: 2px;
  background: currentColor;
  opacity: 0.5;
}

.page-disclaimer .usage-inline-link {
  color: var(--blue-900);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 2px solid var(--orange-300);
  padding-bottom: 1px;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-disclaimer .usage-inline-link:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-disclaimer .usage-anchor-jump {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px dashed var(--orange-300);
}

.page-disclaimer .usage-anchor-jump:hover {
  color: var(--blue-900);
  border-bottom-style: solid;
}

/* ---------- 授权范围图与情形对照 ---------- */
.page-disclaimer .grant-figure {
  margin: 0 0 22px;
  border: 1px solid var(--line);
  box-shadow: 6px 6px 0 var(--mist);
  overflow: hidden;
}

.page-disclaimer .grant-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 5;
  object-fit: cover;
}

.page-disclaimer .grant-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-disclaimer .grant {
  padding: 20px 20px 24px;
  background: #fff;
  border: 1px solid var(--line);
}

.page-disclaimer .grant--ok {
  border-left: 4px solid var(--acid);
  background: linear-gradient(180deg, var(--usage-acid-soft), rgba(255, 255, 255, 0) 62%);
}

.page-disclaimer .grant--ask {
  border-left: 4px solid var(--orange);
  background: linear-gradient(180deg, var(--usage-orange-soft), rgba(255, 255, 255, 0) 62%);
}

.page-disclaimer .grant__tag {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.page-disclaimer .grant--ok .grant__tag {
  background: var(--acid);
  color: var(--acid-ink);
}

.page-disclaimer .grant--ask .grant__tag {
  background: var(--mist);
  color: var(--blue-900);
  border-left: 3px solid var(--orange);
}

.page-disclaimer .grant__list li {
  font-size: 15px;
}

/* ---------- 收束区 ---------- */
.page-disclaimer .usage-outro {
  position: relative;
  overflow: hidden;
  color: var(--paper);
  padding-block: clamp(44px, 6vw, 80px);
  background:
    radial-gradient(95% 120% at 100% 0%, rgba(255, 90, 31, 0.34), transparent 58%),
    linear-gradient(142deg, var(--blue-900) 0%, var(--blue-700) 64%, var(--blue-500) 100%);
}

.page-disclaimer .usage-outro::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    116deg,
    rgba(244, 246, 250, 0.05) 0 2px,
    transparent 2px 10px
  );
}

.page-disclaimer .usage-outro > .shell {
  position: relative;
  z-index: 1;
}

.page-disclaimer .usage-outro__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: center;
}

.page-disclaimer .usage-outro__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--acid);
}

.page-disclaimer .usage-outro__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.3;
  letter-spacing: -0.025em;
  color: var(--paper);
}

.page-disclaimer .usage-outro__text {
  margin: 14px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 246, 250, 0.78);
}

.page-disclaimer .usage-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-disclaimer .usage-outro__actions .btn {
  flex: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-disclaimer .grant-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    gap: 64px;
  }

  .page-disclaimer .clause {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 40px;
  }

  .page-disclaimer .clause__no {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .page-disclaimer .clause__no svg {
    width: 22px;
    height: 22px;
    margin-top: 2px;
  }
}

@media (min-width: 960px) {
  .page-disclaimer .usage-outro__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 56px;
  }
}

@media (max-width: 420px) {
  .page-disclaimer .usage-index {
    padding: 16px 14px 20px;
  }

  .page-disclaimer .grant-figure {
    box-shadow: 4px 4px 0 var(--mist);
  }

  .page-disclaimer .usage-outro__actions .btn {
    flex: 1 1 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-index__link,
  .page-disclaimer .usage-inline-link,
  .page-disclaimer .usage-hero .breadcrumb__link {
    transition: none;
  }

  .page-disclaimer .usage-index__link:hover {
    padding-left: 0;
  }
}