.page-disclaimer {
  --disclaimer-dim: rgba(238, 242, 248, .84);
  --disclaimer-rule: rgba(255, 197, 61, .34);
  position: relative;
  display: block;
}

/* ============ 首屏 ============ */
.page-disclaimer .usage-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(22px, 4.5vw, 52px) 0 clamp(34px, 6vw, 76px);
}

.page-disclaimer .usage-hero::before {
  content: "";
  position: absolute;
  z-index: -2;
  inset: 0;
  background:
    radial-gradient(52% 58% at 80% 6%, rgba(155, 107, 255, .34), transparent 68%),
    radial-gradient(46% 52% at 4% 28%, rgba(255, 61, 90, .20), transparent 70%),
    radial-gradient(64% 50% at 52% 106%, rgba(255, 197, 61, .16), transparent 72%);
  pointer-events: none;
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 14%;
  right: -10%;
  width: min(560px, 72vw);
  height: 62%;
  transform: rotate(-6deg);
  border-radius: 32px;
  background: linear-gradient(135deg, rgba(255, 197, 61, .15), rgba(155, 107, 255, .11) 55%, transparent);
  clip-path: polygon(0 12%, 100% 0, 94% 100%, 6% 88%);
  pointer-events: none;
}

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

.page-disclaimer .usage-hero__cols {
  display: grid;
  gap: clamp(22px, 4vw, 38px);
  margin-top: clamp(16px, 3vw, 28px);
}

.page-disclaimer .usage-hero__lead h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--white);
  text-shadow: 0 0 30px rgba(255, 197, 61, .20);
}

.page-disclaimer .usage-hero__lead .lede {
  margin-top: 16px;
  max-width: 42ch;
}

.page-disclaimer .usage-hero__lead .btn-row {
  margin-top: 24px;
}

.page-disclaimer .usage-hero__aside {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-disclaimer .usage-flash {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .015));
  backdrop-filter: blur(8px);
}

.page-disclaimer .usage-flash--gold {
  border-left: 3px solid var(--gold);
}

.page-disclaimer .usage-flash--green {
  border-left: 3px solid var(--green);
}

.page-disclaimer .usage-flash--violet {
  border-left: 3px solid var(--violet);
}

.page-disclaimer .usage-flash__key {
  flex: 0 0 auto;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-disclaimer .usage-flash--green .usage-flash__key {
  color: var(--green);
}

.page-disclaimer .usage-flash--violet .usage-flash__key {
  color: var(--violet);
}

.page-disclaimer .usage-flash__text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--disclaimer-dim);
}

.page-disclaimer .usage-hero__media {
  margin-top: clamp(26px, 4vw, 46px);
}

/* ============ 规则区块 ============ */
.page-disclaimer .usage-section {
  position: relative;
  padding: clamp(34px, 5.5vw, 74px) 0;
}

.page-disclaimer .usage-section + .usage-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(100% - 32px, var(--maxw));
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--disclaimer-rule) 15%, var(--disclaimer-rule) 85%, transparent);
}

.page-disclaimer .usage-section--last {
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-disclaimer .usage-block {
  display: grid;
  gap: 22px;
}

.page-disclaimer .usage-block__num {
  display: inline-flex;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--gold);
  text-shadow: 0 0 22px rgba(255, 197, 61, .45);
}

.page-disclaimer .usage-block__head .section-title {
  margin: 10px 0 0;
  line-height: 1.3;
}

.page-disclaimer .usage-block__intro {
  margin: 10px 0 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

/* 编号条目 */
.page-disclaimer .rule-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: rule;
  display: grid;
  gap: 12px;
}

.page-disclaimer .rule-list__item {
  position: relative;
  counter-increment: rule;
  padding: 16px 18px 16px 54px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, .05), rgba(255, 255, 255, .015));
  transition: border-color .2s ease, background-color .2s ease;
}

.page-disclaimer .rule-list__item::before {
  content: counter(rule, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 15px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  color: var(--gold);
  text-shadow: 0 0 12px rgba(255, 197, 61, .55);
}

.page-disclaimer .rule-list__item:hover,
.page-disclaimer .rule-list__item:focus-within {
  border-color: rgba(255, 197, 61, .38);
}

.page-disclaimer .rule-list__title {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

.page-disclaimer .rule-list__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--disclaimer-dim);
}

/* ============ 修订轨迹与联系方式 ============ */
.page-disclaimer .usage-update__body {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-disclaimer .revision-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-disclaimer .revision-track__item {
  position: relative;
  padding-left: 30px;
}

.page-disclaimer .revision-track__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 14px rgba(255, 197, 61, .7);
}

.page-disclaimer .revision-track__item::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 21px;
  bottom: -18px;
  width: 2px;
  background: linear-gradient(180deg, rgba(255, 197, 61, .5), rgba(155, 107, 255, .35));
}

.page-disclaimer .revision-track__item:last-child::after {
  display: none;
}

.page-disclaimer .revision-track__label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-disclaimer .revision-track__text {
  margin: 4px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--disclaimer-dim);
}

.page-disclaimer .usage-reach {
  display: grid;
  gap: 12px;
}

.page-disclaimer .usage-reach__item {
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .015));
}

.page-disclaimer .usage-reach__key {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-disclaimer .usage-reach__val {
  margin: 8px 0 0;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
  word-break: break-word;
}

.page-disclaimer .usage-reach__note {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-disclaimer .usage-reach__note a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ============ 平板与桌面 ============ */
@media (min-width: 720px) {
  .page-disclaimer .usage-reach {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-disclaimer .usage-hero__aside .usage-flash:nth-child(2) {
    margin-left: 20px;
  }

  .page-disclaimer .usage-hero__aside .usage-flash:nth-child(3) {
    margin-left: 8px;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-hero__cols {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr);
    align-items: start;
  }

  .page-disclaimer .usage-block {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(28px, 4vw, 60px);
    align-items: start;
  }

  .page-disclaimer .usage-update__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

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

@media (min-width: 1100px) {
  .page-disclaimer .usage-reach {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ============ 窄屏收束 ============ */
@media (max-width: 420px) {
  .page-disclaimer .rule-list__item {
    padding: 14px 14px 14px 46px;
  }

  .page-disclaimer .rule-list__item::before {
    left: 13px;
    top: 13px;
    font-size: .92rem;
  }

  .page-disclaimer .usage-hero__lead h1 {
    font-size: clamp(1.75rem, 8vw, 2.2rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .rule-list__item {
    transition: none;
  }
}
<<<END>>>