.page-disclaimer {
  --usage-gap: 12px;
  padding: 24px 0 72px;
  color: var(--mist);
  background:
    radial-gradient(560px 320px at 88% -40px, rgba(51, 225, 203, 0.10), transparent 68%),
    radial-gradient(440px 300px at 0% 16%, rgba(138, 107, 255, 0.12), transparent 70%);
}

.page-disclaimer .crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-disclaimer .crumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
  color: var(--line);
}

.page-disclaimer .crumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

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

/* 首屏 */
.page-disclaimer .usage-hero {
  position: relative;
  overflow: hidden;
  padding: 24px 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  border-top-left-radius: var(--r-lg);
  background: linear-gradient(158deg, rgba(16, 30, 51, 0.94), rgba(12, 24, 40, 0.94));
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -130px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(240, 180, 94, 0.18), transparent 66%);
  pointer-events: none;
  aria-hidden: true;
}

.page-disclaimer .usage-hero h1 {
  margin: 10px 0 0;
  max-width: 18em;
}

.page-disclaimer .usage-hero .lede {
  margin: 14px 0 0;
  max-width: 660px;
  color: rgba(232, 239, 247, 0.82);
}

.page-disclaimer .fact-strip {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .fact-strip li {
  display: grid;
  gap: 5px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  border-radius: var(--r-sm);
  background: rgba(10, 19, 34, 0.62);
}

.page-disclaimer .fact-strip__k {
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-disclaimer .fact-strip__v {
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--mist);
}

/* 图片 */
.page-disclaimer .usage-figure {
  margin: 20px 0 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  border-bottom-right-radius: var(--r-lg);
  background: var(--panel-deep);
}

.page-disclaimer .usage-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-disclaimer .usage-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

/* 主体分栏 */
.page-disclaimer .usage-body {
  display: grid;
  gap: 24px;
  margin-top: 28px;
}

.page-disclaimer .usage-toc {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  border-top-right-radius: var(--r-lg);
  background: rgba(16, 30, 51, 0.55);
}

.page-disclaimer .toc-title {
  margin: 0;
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.page-disclaimer .chapter-index ol {
  display: grid;
  gap: 4px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .chapter-index a {
  display: block;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-disclaimer .chapter-index a:hover,
.page-disclaimer .chapter-index a:focus-visible,
.page-disclaimer .chapter-index a[aria-current="true"] {
  color: var(--mist);
  border-left-color: var(--cyan);
  background: rgba(51, 225, 203, 0.08);
}

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

.page-disclaimer .toc-note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid rgba(30, 58, 85, 0.8);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-disclaimer .toc-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 225, 203, 0.5);
}

.page-disclaimer .toc-note a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* 章节 */
.page-disclaimer .usage-sec {
  padding-top: 2px;
}

.page-disclaimer .sec-head {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.page-disclaimer .sec-num {
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.page-disclaimer .sec-head h2 {
  margin: 0;
  font-size: clamp(1.3rem, 3.4vw, 1.85rem);
  line-height: 1.25;
  letter-spacing: -0.012em;
  color: var(--mist);
}

.page-disclaimer .sec-head p {
  margin: 0;
  max-width: 620px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-disclaimer .rules {
  display: grid;
  gap: var(--usage-gap);
}

/* 规则条目卡 */
.page-disclaimer .rule {
  position: relative;
  display: grid;
  gap: 12px;
  padding: 16px 16px 16px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  border-bottom-left-radius: var(--r-lg);
  background: var(--panel-deep);
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-disclaimer .rule::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 2px;
  border-radius: 2px;
  background: var(--line);
  transition: background 0.18s var(--ease);
}

.page-disclaimer .rule:hover {
  border-color: rgba(51, 225, 203, 0.4);
}

.page-disclaimer .rule:hover::before {
  background: rgba(51, 225, 203, 0.55);
}

.page-disclaimer .rule:has(.rule__more[open]) {
  border-color: rgba(51, 225, 203, 0.75);
  background: linear-gradient(180deg, rgba(51, 225, 203, 0.07), rgba(12, 24, 40, 1) 46%);
}

.page-disclaimer .rule:has(.rule__more[open])::before {
  background: linear-gradient(180deg, var(--cyan), var(--violet));
}

.page-disclaimer .rule__lead h3 {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.4;
  letter-spacing: -0.005em;
  color: var(--mist);
}

.page-disclaimer .rule__lead p {
  margin: 7px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(232, 239, 247, 0.8);
}

.page-disclaimer .rule__more summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: max-content;
  max-width: 100%;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  cursor: pointer;
  list-style: none;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease), color 0.18s var(--ease);
}

.page-disclaimer .rule__more summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer .rule__more summary::after {
  content: "＋";
  font-family: var(--font-num);
  font-size: 12px;
  line-height: 1;
}

.page-disclaimer .rule__more[open] summary::after {
  content: "－";
}

.page-disclaimer .rule__more summary:hover {
  border-color: var(--cyan);
  background: rgba(51, 225, 203, 0.08);
}

.page-disclaimer .rule__more summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.page-disclaimer .rule__detail {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(30, 58, 85, 0.9);
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-disclaimer .rule__detail ul {
  display: grid;
  gap: 7px;
  margin: 0;
  padding-left: 1.1em;
}

.page-disclaimer .rule__detail li::marker {
  color: var(--cyan);
}

.page-disclaimer .rule__detail strong {
  color: var(--mist);
  font-weight: 600;
  word-break: break-all;
}

.page-disclaimer .rule__detail a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 225, 203, 0.45);
}

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

/* 光带过渡 */
.page-disclaimer .light-band {
  height: 1px;
  margin: 28px 0;
  border: 0;
  background: linear-gradient(90deg, transparent, rgba(51, 225, 203, 0.55), rgba(138, 107, 255, 0.45), transparent);
}

/* 对照表 */
.page-disclaimer .compare-wrap {
  margin-top: 18px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  border-top-right-radius: var(--r-lg);
  background: rgba(16, 30, 51, 0.5);
}

.page-disclaimer .compare {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 13.5px;
}

.page-disclaimer .compare caption {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-disclaimer .compare th,
.page-disclaimer .compare td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  line-height: 1.7;
  border-bottom: 1px solid rgba(30, 58, 85, 0.75);
}

.page-disclaimer .compare thead th {
  background: rgba(10, 19, 34, 0.72);
  font-weight: 600;
}

.page-disclaimer .compare tbody tr:last-child td {
  border-bottom: 0;
}

.page-disclaimer .compare td:first-child {
  color: var(--mist);
}

.page-disclaimer .compare td {
  color: var(--muted);
}

/* 结尾入口 */
.page-disclaimer .next-steps {
  margin-top: 32px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  border-top-right-radius: var(--r-lg);
  background:
    radial-gradient(420px 200px at 92% 0%, rgba(138, 107, 255, 0.16), transparent 70%),
    linear-gradient(180deg, rgba(16, 30, 51, 0.9), rgba(12, 24, 40, 0.9));
}

.page-disclaimer .next-steps h2 {
  margin: 0;
  font-size: clamp(1.2rem, 3vw, 1.55rem);
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-disclaimer .next-steps > p {
  margin: 10px 0 0;
  max-width: 600px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-disclaimer .next-links {
  display: grid;
  gap: 10px;
  margin: 18px 0 20px;
  padding: 0;
  list-style: none;
}

.page-disclaimer .next-links li {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(10, 19, 34, 0.55);
  transition: border-color 0.18s var(--ease);
}

.page-disclaimer .next-links li:hover {
  border-color: rgba(51, 225, 203, 0.5);
}

.page-disclaimer .next-links a {
  font-size: 15px;
  font-weight: 600;
  color: var(--cyan);
  text-decoration: none;
  width: max-content;
}

.page-disclaimer .next-links a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.page-disclaimer .next-links a:hover {
  color: var(--gold);
}

.page-disclaimer .next-links span {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-disclaimer .next-steps .btn {
  align-self: flex-start;
}

/* 平板及以上 */
@media (min-width: 720px) {
  .page-disclaimer {
    --usage-gap: 14px;
    padding-top: 32px;
  }

  .page-disclaimer .usage-hero {
    padding: 32px 30px 28px;
  }

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

  .page-disclaimer .rule {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
    gap: 22px;
    padding: 18px 20px 18px 24px;
  }

  .page-disclaimer .next-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 桌面端：左侧索引 + 右侧内容流 */
@media (min-width: 980px) {
  .page-disclaimer {
    padding-bottom: 96px;
  }

  .page-disclaimer .usage-body {
    grid-template-columns: 214px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
    margin-top: 34px;
  }

  .page-disclaimer .usage-toc {
    position: sticky;
    top: calc(var(--header-h) + 22px);
    padding: 16px 18px;
  }

  .page-disclaimer .chapter-index ol {
    gap: 2px;
  }

  .page-disclaimer .sec-head {
    grid-template-columns: minmax(0, 1fr);
    margin-bottom: 18px;
  }

  .page-disclaimer .next-steps {
    padding: 28px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
<<<END>>>