.page-disclaimer .usage-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(88px, 13vw, 148px) 0 clamp(46px, 7vw, 78px);
  color: var(--white);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(255, 107, 44, .30), transparent 62%),
    linear-gradient(155deg, var(--navy) 0%, var(--midnight) 78%);
  border-bottom-left-radius: var(--r-xl);
  border-bottom-right-radius: var(--r-xl);
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  top: -22%;
  right: -12%;
  width: 58%;
  height: 150%;
  background: linear-gradient(180deg, rgba(184, 255, 61, .16), rgba(184, 255, 61, 0));
  transform: rotate(14deg);
  pointer-events: none;
}

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

.page-disclaimer .breadcrumb {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
}

.page-disclaimer .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: rgba(255, 255, 255, .58);
}

.page-disclaimer .breadcrumb__list li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(255, 255, 255, .34);
}

.page-disclaimer .breadcrumb__list a {
  color: rgba(255, 255, 255, .86);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, .28);
}

.page-disclaimer .breadcrumb__list a:hover {
  color: var(--lime);
  border-color: var(--lime);
}

.page-disclaimer .usage-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
  align-items: center;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-disclaimer .usage-hero .eyebrow {
  display: inline-block;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-disclaimer .usage-hero__title {
  margin: 16px 0 0;
  font-size: clamp(58px, 14vw, 118px);
  line-height: .9;
  letter-spacing: -.035em;
  font-weight: 200;
}

.page-disclaimer .usage-hero__bold {
  display: block;
  font-weight: 900;
  color: var(--white);
  text-shadow: 0 0 40px rgba(255, 107, 44, .35);
}

.page-disclaimer .usage-hero__thin {
  display: block;
  color: rgba(255, 255, 255, .62);
}

.page-disclaimer .usage-hero__lede {
  margin: 22px 0 0;
  max-width: 34em;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.72;
  color: rgba(255, 255, 255, .84);
}

.page-disclaimer .usage-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-hero__media {
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: 0 34px 80px -34px rgba(0, 0, 0, .78);
}

.page-disclaimer .usage-hero__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---- 章节索引 ---- */
.page-disclaimer .usage-toc {
  position: sticky;
  top: var(--header-h);
  z-index: 30;
  background: rgba(246, 241, 232, .94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(11, 42, 74, .12);
}

.page-disclaimer .usage-toc__list {
  display: flex;
  gap: 8px;
  margin: 0 auto;
  padding: 13px var(--gut);
  max-width: var(--maxw);
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .usage-toc__list::-webkit-scrollbar {
  display: none;
}

.page-disclaimer .usage-toc__list a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 17px;
  border-radius: var(--pill);
  border: 1px solid rgba(11, 42, 74, .18);
  color: var(--navy);
  font-size: 14px;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-disclaimer .usage-toc__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--orange);
}

.page-disclaimer .usage-toc__list a:hover,
.page-disclaimer .usage-toc__list a:focus-visible {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--white);
}

.page-disclaimer .usage-toc__list a:hover .usage-toc__no,
.page-disclaimer .usage-toc__list a:focus-visible .usage-toc__no {
  color: var(--lime);
}

/* ---- 规则分区 ---- */
.page-disclaimer .rule-zone {
  padding-block: clamp(48px, 8vw, 96px);
}

.page-disclaimer .rule-zone--paper {
  background: var(--paper);
}

.page-disclaimer .rule-zone--mist {
  background: var(--mist);
}

.page-disclaimer .rule {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 6px 16px;
  padding-block: clamp(26px, 4.4vw, 40px);
  border-top: 1px solid rgba(11, 42, 74, .15);
  scroll-margin-top: calc(var(--header-h) + 86px);
  transition: background var(--dur) var(--ease);
}

.page-disclaimer .rule:last-child {
  border-bottom: 1px solid rgba(11, 42, 74, .15);
}

.page-disclaimer .rule:hover {
  background: rgba(255, 255, 255, .62);
}

.page-disclaimer .rule__no {
  align-self: start;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.4vw, 20px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: .04em;
  color: var(--orange);
  transition: color var(--dur) var(--ease);
}

.page-disclaimer .rule:hover .rule__no {
  color: var(--navy);
}

.page-disclaimer .rule__title {
  margin: 0;
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.012em;
  color: var(--navy);
}

.page-disclaimer .rule__text {
  margin: 12px 0 0;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}

.page-disclaimer .rule__text a,
.page-disclaimer .rule__points a {
  color: var(--navy);
  text-decoration: none;
  border-bottom: 2px solid var(--lime);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-disclaimer .rule__text a:hover,
.page-disclaimer .rule__points a:hover {
  color: var(--orange);
  border-color: var(--orange);
}

.page-disclaimer .rule__points {
  display: grid;
  gap: 9px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  font-size: 15px;
  line-height: 1.7;
}

.page-disclaimer .rule__points li {
  position: relative;
  padding-left: 20px;
  color: var(--ink);
}

.page-disclaimer .rule__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--lime);
  box-shadow: 0 0 0 1px rgba(11, 42, 74, .16);
}

.page-disclaimer .rule__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---- 横向提示带 ---- */
.page-disclaimer .usage-band {
  position: relative;
  overflow: hidden;
  padding-block: clamp(34px, 6vw, 58px);
  background: var(--midnight);
  color: var(--white);
}

.page-disclaimer .usage-band::before {
  content: "";
  position: absolute;
  top: -45%;
  right: -10%;
  width: 54%;
  height: 190%;
  background: linear-gradient(120deg, rgba(184, 255, 61, .18), rgba(255, 107, 44, .12));
  transform: rotate(-12deg);
  pointer-events: none;
}

.page-disclaimer .usage-band__inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px 32px;
}

.page-disclaimer .usage-band__line {
  margin: 0;
  max-width: 34em;
  font-size: clamp(17px, 2.2vw, 22px);
  line-height: 1.6;
  color: rgba(255, 255, 255, .9);
}

.page-disclaimer .usage-band__line strong {
  color: var(--lime);
  font-weight: 700;
}

.page-disclaimer .back-top {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  border-radius: var(--pill);
  border: 1px solid rgba(255, 255, 255, .34);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  text-decoration: none;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-disclaimer .back-top:hover,
.page-disclaimer .back-top:focus-visible {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--navy);
}

/* ---- 响应式 ---- */
@media (min-width: 640px) {
  .page-disclaimer .rule__points {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 9px 26px;
  }
}

@media (min-width: 760px) {
  .page-disclaimer .usage-hero__bold,
  .page-disclaimer .usage-hero__thin {
    display: inline;
  }

  .page-disclaimer .usage-hero__title {
    font-size: clamp(72px, 9vw, 118px);
  }

  .page-disclaimer .usage-hero__bold {
    padding-left: .12em;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  }

  .page-disclaimer .rule {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 0 42px;
    padding-block: clamp(34px, 4vw, 50px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .rule,
  .page-disclaimer .rule__no,
  .page-disclaimer .usage-toc__list a,
  .page-disclaimer .back-top {
    transition: none;
  }
}