.page-disclaimer {
  --usage-rule: rgba(17, 20, 43, 0.14);
  background: var(--paper);
  color: var(--ink);
}

.page-disclaimer .breadcrumbs {
  padding-top: clamp(18px, 3vw, 28px);
  padding-bottom: clamp(16px, 2.6vw, 24px);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(46px, 7vw, 92px) 0 clamp(38px, 6vw, 76px);
  background:
    radial-gradient(120% 140% at 88% 8%, rgba(57, 242, 224, 0.18) 0%, transparent 48%),
    radial-gradient(90% 120% at 4% 98%, rgba(255, 106, 26, 0.24) 0%, transparent 56%),
    linear-gradient(148deg, var(--space) 0%, var(--nebula) 62%, var(--space-2) 100%);
  color: var(--paper);
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(247, 244, 238, 0.055) 0 1px,
    transparent 1px 54px
  );
}

.page-disclaimer .usage-hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: clamp(12px, 1.8vw, 20px);
}

.page-disclaimer .usage-hero__kicker {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-disclaimer .usage-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--step-hero);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--paper);
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-disclaimer .usage-hero__lead {
  margin: 0;
  max-width: 46ch;
  font-size: var(--step-body);
  line-height: 1.85;
  color: rgba(247, 244, 238, 0.8);
}

.page-disclaimer .usage-hero__lead a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 194, 75, 0.5);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-disclaimer .usage-hero__lead a:hover,
.page-disclaimer .usage-hero__lead a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--cyan);
}

.page-disclaimer .usage-hero__meta {
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.page-disclaimer .usage-hero__meta li {
  padding: 5px 10px;
  border: 1px solid rgba(255, 194, 75, 0.4);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

/* ---------- 目录 ---------- */
.page-disclaimer .usage-toc {
  padding-top: clamp(40px, 6vw, 72px);
  padding-bottom: clamp(8px, 1.6vw, 16px);
}

.page-disclaimer .usage-toc__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  margin-bottom: 18px;
}

.page-disclaimer .usage-toc__title {
  margin: 0;
  font-size: var(--step-h3);
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-disclaimer .usage-toc__hint {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-disclaimer .usage-toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--usage-rule);
}

.page-disclaimer .usage-toc__link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 13px 2px;
  border-bottom: 1px solid var(--usage-rule);
  color: var(--ink);
  text-decoration: none;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease),
    padding-left var(--dur) var(--ease);
}

.page-disclaimer .usage-toc__link:hover,
.page-disclaimer .usage-toc__link:focus-visible {
  color: var(--tiger);
  background-color: rgba(255, 106, 26, 0.06);
  padding-left: 10px;
}

.page-disclaimer .usage-toc__link:focus-visible {
  outline: 2px solid var(--tiger);
  outline-offset: -2px;
}

.page-disclaimer .usage-toc__num {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
  transition: color var(--dur) var(--ease);
}

.page-disclaimer .usage-toc__link:hover .usage-toc__num,
.page-disclaimer .usage-toc__link:focus-visible .usage-toc__num {
  color: var(--tiger);
}

.page-disclaimer .usage-toc__label {
  font-size: var(--step-body);
  line-height: 1.5;
}

/* ---------- 条款主体 ---------- */
.page-disclaimer .usage-body {
  padding-top: clamp(8px, 1.4vw, 16px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-disclaimer .usage-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: clamp(30px, 5vw, 54px) 0;
  border-top: 1px solid var(--usage-rule);
  scroll-margin-top: 96px;
}

.page-disclaimer .usage-item:first-child {
  border-top: 0;
  padding-top: clamp(20px, 3vw, 32px);
}

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

.page-disclaimer .usage-item__main {
  min-width: 0;
}

.page-disclaimer .usage-item__title {
  margin: 0 0 12px;
  font-size: var(--step-h2);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-disclaimer .usage-item__summary {
  margin: 0 0 18px;
  padding-left: 14px;
  border-left: 2px solid var(--tiger);
  max-width: 64ch;
  font-size: var(--step-body);
  font-weight: 700;
  line-height: 1.7;
  color: var(--ink);
}

.page-disclaimer .usage-item__main p {
  margin: 0 0 12px;
  max-width: 66ch;
  font-size: var(--step-body);
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-disclaimer .usage-item__main p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .usage-item__main a {
  color: var(--tiger-deep);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease);
}

.page-disclaimer .usage-item__main a:hover,
.page-disclaimer .usage-item__main a:focus-visible {
  color: var(--tiger);
}

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

.page-disclaimer .usage-item__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-disclaimer .usage-item__list li {
  position: relative;
  padding-left: 22px;
  max-width: 66ch;
  font-size: var(--step-body);
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-disclaimer .usage-item__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.74em;
  width: 10px;
  height: 1px;
  background: var(--tiger);
}

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

.page-disclaimer .usage-item__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

/* ---------- 四步铭牌 ---------- */
.page-disclaimer .usage-steps {
  margin: 24px 0 8px;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--usage-rule);
  border: 1px solid var(--usage-rule);
}

.page-disclaimer .usage-steps__item {
  background: var(--paper);
  padding: 18px 18px 20px;
  transition: background-color var(--dur) var(--ease);
}

.page-disclaimer .usage-steps__item:hover {
  background: rgba(255, 106, 26, 0.05);
}

.page-disclaimer .usage-steps__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--tiger);
}

.page-disclaimer .usage-steps__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 900;
  line-height: 1.35;
  color: var(--ink);
}

.page-disclaimer .usage-steps__text {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--ink-soft);
}

/* ---------- 图形 ---------- */
.page-disclaimer .usage-figure {
  margin: 24px 0 4px;
}

.page-disclaimer .usage-figure__frame {
  position: relative;
  aspect-ratio: 2 / 1;
  overflow: hidden;
  border: 1px solid var(--usage-rule);
  background: linear-gradient(140deg, var(--space), var(--nebula));
}

.page-disclaimer .usage-figure__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(57, 242, 224, 0.12) 0 1px,
    transparent 1px 48px
  );
  opacity: 0.6;
}

.page-disclaimer .usage-figure__frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-disclaimer .usage-figure__caption {
  margin: 10px 0 0;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* ---------- 三档标签 ---------- */
.page-disclaimer .usage-tags {
  margin: 22px 0 4px;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-disclaimer .usage-tag {
  padding: 16px 18px 18px;
  border: 1px solid var(--usage-rule);
  background: rgba(255, 255, 255, 0.5);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-disclaimer .usage-tag:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-disclaimer .usage-tag--accent {
  border-color: rgba(255, 106, 26, 0.6);
  background: rgba(255, 106, 26, 0.06);
}

.page-disclaimer .usage-tag__label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--mist);
}

.page-disclaimer .usage-tag--accent .usage-tag__label {
  color: var(--tiger);
}

.page-disclaimer .usage-tag__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 900;
  color: var(--ink);
}

.page-disclaimer .usage-tag__text {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-disclaimer .usage-tag__text a {
  color: var(--tiger-deep);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- 站外节点 ---------- */
.page-disclaimer .usage-nodes {
  margin: 22px 0 4px;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
}

.page-disclaimer .usage-node {
  padding: 7px 12px;
  border: 1px dashed rgba(17, 20, 43, 0.35);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
}

.page-disclaimer .usage-node--here {
  border-style: solid;
  border-color: var(--tiger);
  color: var(--ink);
  font-weight: 700;
}

.page-disclaimer .usage-arrow {
  font-size: 12px;
  color: var(--mist);
}

/* ---------- 页尾信息条 ---------- */
.page-disclaimer .usage-endbar {
  margin-top: clamp(36px, 5vw, 64px);
  background:
    radial-gradient(90% 140% at 92% 10%, rgba(255, 106, 26, 0.22) 0%, transparent 52%),
    linear-gradient(120deg, var(--space) 0%, var(--nebula) 100%);
  color: var(--paper);
}

.page-disclaimer .usage-endbar__inner {
  display: grid;
  gap: 22px;
  padding-top: clamp(32px, 5vw, 60px);
  padding-bottom: clamp(32px, 5vw, 60px);
}

.page-disclaimer .usage-endbar__title {
  margin: 0 0 10px;
  font-size: var(--step-h2);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-disclaimer .usage-endbar__text {
  margin: 0;
  max-width: 52ch;
  font-size: var(--step-body);
  line-height: 1.8;
  color: rgba(247, 244, 238, 0.78);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-disclaimer .usage-toc__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(20px, 3vw, 40px);
  }

  .page-disclaimer .usage-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-disclaimer .usage-item {
    grid-template-columns: 76px minmax(0, 1fr) 54px;
    gap: 0 32px;
    align-items: start;
  }

  .page-disclaimer .usage-item__num {
    padding-top: 8px;
  }

  .page-disclaimer .usage-item__note {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    justify-self: end;
    padding-top: 10px;
    line-height: 1.2;
  }

  .page-disclaimer .usage-endbar__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-toc__link,
  .page-disclaimer .usage-steps__item,
  .page-disclaimer .usage-tag {
    transition: none;
  }

  .page-disclaimer .usage-tag:hover {
    transform: none;
  }
}

@media print {
  .page-disclaimer {
    background: #fff;
    color: #000;
  }

  .page-disclaimer .usage-hero {
    background: none;
    color: #000;
    padding: 0 0 16px;
  }

  .page-disclaimer .usage-hero::after,
  .page-disclaimer .usage-figure__frame::after {
    display: none;
  }

  .page-disclaimer .usage-hero__title,
  .page-disclaimer .usage-hero__lead,
  .page-disclaimer .usage-hero__kicker {
    color: #000;
    transform: none;
  }

  .page-disclaimer .usage-hero__meta li {
    border-color: #999;
    color: #333;
  }

  .page-disclaimer .usage-endbar {
    background: none;
    color: #000;
    margin-top: 24px;
  }

  .page-disclaimer .usage-endbar__title,
  .page-disclaimer .usage-endbar__text {
    color: #000;
  }

  .page-disclaimer .usage-endbar__actions {
    display: none;
  }
}
<<<END>>>