.page-disclaimer {
  --usage-rule: rgba(16,24,32,.14);
  --usage-rule-soft: rgba(16,24,32,.08);
  --usage-line: rgba(11,44,74,.55);
  background: var(--paper);
  color: var(--slate);
  font-family: var(--font-sans);
  font-size: var(--fs-17);
  line-height: 1.85;
}

.page-disclaimer .crumbs {
  margin: 0 0 22px;
}

.page-disclaimer .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: .02em;
}

.page-disclaimer .crumbs li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-disclaimer .crumbs li + li::before {
  content: "";
  width: 1px;
  height: 12px;
  background: var(--line-strong);
}

.page-disclaimer .crumbs a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t), color var(--t);
}

.page-disclaimer .crumbs a:hover {
  border-bottom-color: var(--yellow);
}

.page-disclaimer .crumbs [aria-current="page"] {
  color: var(--ink);
}

/* ---------- 页首 ---------- */

.page-disclaimer .usage-hero {
  position: relative;
  background: var(--white);
  border-bottom: 1px solid var(--usage-rule);
  overflow: hidden;
}

.page-disclaimer .usage-hero__inner {
  padding-top: 38px;
  padding-bottom: 34px;
}

.page-disclaimer .eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--teal);
}

.page-disclaimer .usage-hero h1 {
  margin: 0;
  max-width: 22ch;
  color: var(--ink);
  font-size: clamp(var(--fs-28), 6.4vw, var(--fs-56));
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.01em;
}

.page-disclaimer .usage-hero h1::after {
  content: "";
  display: block;
  width: 72px;
  height: 6px;
  margin-top: 20px;
  background: var(--yellow);
}

.page-disclaimer .usage-hero__lead {
  margin: 22px 0 0;
  max-width: 62ch;
  color: var(--slate);
  font-size: var(--fs-17);
  line-height: 1.85;
}

.page-disclaimer .usage-hero__meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 30px 0 0;
  padding-top: 4px;
  border-top: 1px solid var(--usage-rule);
}

.page-disclaimer .usage-hero__meta > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--usage-rule-soft);
}

.page-disclaimer .usage-hero__meta dt {
  font-size: var(--fs-15);
  color: var(--slate);
}

.page-disclaimer .usage-hero__meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-17);
  color: var(--blue);
}

.page-disclaimer .usage-hero__art {
  border-top: 1px solid var(--usage-rule);
  background: var(--blue);
}

.page-disclaimer .usage-hero__art img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 14 / 5;
  opacity: .92;
}

/* ---------- 条款章节 ---------- */

.page-disclaimer .clause {
  padding: 46px 0 40px;
  border-bottom: 1px solid var(--usage-rule);
  scroll-margin-top: 80px;
}

.page-disclaimer .clause:last-of-type {
  border-bottom: 0;
}

.page-disclaimer .clause__head {
  margin-bottom: 22px;
}

.page-disclaimer .clause__title {
  position: relative;
  margin: 0 0 8px;
  padding-left: 20px;
  color: var(--ink);
  font-size: clamp(var(--fs-21), 4.6vw, var(--fs-28));
  font-weight: 900;
  line-height: 1.32;
}

.page-disclaimer .clause__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .42em;
  width: 10px;
  height: 10px;
  background: var(--yellow);
}

.page-disclaimer .clause__meta {
  margin: 0;
  padding-left: 20px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: .08em;
  color: var(--slate);
}

.page-disclaimer .clause__meta .num {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 6px;
  background: var(--blue);
  color: var(--white);
  font-size: 1.2em;
  line-height: 1.4;
}

.page-disclaimer .clause__intro {
  margin: 0 0 18px;
  max-width: 68ch;
  color: var(--slate);
}

.page-disclaimer .clause__note {
  margin: 20px 0 0;
  max-width: 68ch;
  padding-left: 16px;
  border-left: 3px solid var(--teal);
  font-size: var(--fs-15);
  color: var(--slate);
}

.page-disclaimer .clause__note a,
.page-disclaimer .caveat__text a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  transition: border-color var(--t), color var(--t);
}

.page-disclaimer .clause__note a:hover,
.page-disclaimer .caveat__text a:hover {
  border-bottom-color: var(--yellow);
  color: var(--ink);
}

/* ---------- 规则条目 ---------- */

.page-disclaimer .rules {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: rule;
  border-top: 1px solid var(--usage-rule-soft);
}

.page-disclaimer .rules__item {
  position: relative;
  padding: 16px 0 16px 44px;
  border-bottom: 1px solid var(--usage-rule-soft);
}

.page-disclaimer .rules__item::before {
  counter-increment: rule;
  content: counter(rule, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 18px;
  width: 30px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--teal);
  letter-spacing: .04em;
}

.page-disclaimer .rules--plain .rules__item::before {
  content: "";
  top: 26px;
  width: 10px;
  height: 10px;
  background: var(--blue);
}

.page-disclaimer .rules__text {
  margin: 0;
  max-width: 68ch;
  color: var(--slate);
}

.page-disclaimer .rules__text strong {
  color: var(--ink);
}

/* ---------- 口径提示块 ---------- */

.page-disclaimer .caveat {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  margin-top: 22px;
  padding: 16px 18px;
  background: var(--paper);
  border: 1px solid var(--usage-rule);
  border-left: 4px solid var(--blue);
}

.page-disclaimer .caveat__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--blue);
}

.page-disclaimer .caveat__text {
  margin: 0;
  font-size: var(--fs-15);
  color: var(--slate);
}

/* ---------- 分享素材场景 ---------- */

.page-disclaimer .usage-cases {
  margin-top: 6px;
}

.page-disclaimer .usage-case {
  padding: 16px;
  background: var(--white);
  border: 1px solid var(--usage-rule);
  transition: border-color var(--t), transform var(--t), background-color var(--t);
}

.page-disclaimer .usage-case:hover {
  transform: translateY(-2px);
  border-color: var(--yellow);
  background: var(--paper);
}

.page-disclaimer .usage-case__flag {
  margin: 0 0 10px;
  display: inline-block;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: .08em;
  color: var(--white);
  background: var(--teal);
}

.page-disclaimer .usage-case--no .usage-case__flag {
  background: var(--red);
}

.page-disclaimer .usage-case__text {
  margin: 0;
  font-size: var(--fs-15);
  color: var(--slate);
}

/* ---------- 页尾 ---------- */

.page-disclaimer .usage-tail {
  margin-top: 48px;
  padding: 44px 0 0;
  background: var(--blue);
  color: var(--paper);
}

.page-disclaimer .usage-tail__lead {
  margin: 0 0 22px;
  font-size: var(--fs-21);
  font-weight: 900;
  color: var(--white);
}

.page-disclaimer .usage-tail__links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-disclaimer .tail-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--blue-deep);
  border: 1px solid var(--line-dim);
  color: var(--paper);
  text-decoration: none;
  transition: border-color var(--t), transform var(--t), background-color var(--t);
}

.page-disclaimer .tail-link:hover,
.page-disclaimer .tail-link:focus-visible {
  transform: translateY(-2px);
  border-color: var(--yellow);
}

.page-disclaimer .tail-link__label {
  font-size: var(--fs-17);
  font-weight: 700;
  color: var(--white);
}

.page-disclaimer .tail-link__hint {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: .1em;
  color: var(--yellow);
}

.page-disclaimer .usage-tail__back {
  margin: 30px 0 0;
  padding: 18px 0 40px;
  border-top: 1px solid var(--line-dim);
  font-family: var(--font-mono);
  font-size: var(--fs-13);
}

.page-disclaimer .usage-tail__back a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--line-dim);
  transition: border-color var(--t), color var(--t);
}

.page-disclaimer .usage-tail__back a:hover {
  border-bottom-color: var(--yellow);
  color: var(--yellow);
}

.page-disclaimer a:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-disclaimer .usage-hero__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 24px;
  }

  .page-disclaimer .usage-hero__meta > div {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .page-disclaimer .usage-tail__links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-hero__inner {
    padding-top: 54px;
    padding-bottom: 46px;
  }

  .page-disclaimer .clause {
    padding: 60px 0 52px;
  }

  .page-disclaimer .clause__head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 24px;
    margin-bottom: 26px;
  }

  .page-disclaimer .clause__title {
    margin-bottom: 0;
  }

  .page-disclaimer .clause__meta {
    padding-left: 0;
    text-align: right;
  }

  .page-disclaimer .rules__item {
    padding-left: 56px;
  }

  .page-disclaimer .caveat {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 18px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-case:hover,
  .page-disclaimer .tail-link:hover,
  .page-disclaimer .tail-link:focus-visible {
    transform: none;
  }
}