.page-disclaimer {
  --stop: #FF5C7A;
  --rail: 88px;
  --body-text: #CFE0F2;
  background:
    radial-gradient(circle at 12% -8%, rgba(26, 92, 255, 0.24), transparent 52%),
    radial-gradient(circle at 90% 4%, rgba(0, 224, 198, 0.14), transparent 46%),
    var(--ink);
  color: var(--ice);
  padding-bottom: 72px;
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  padding: 20px 0 44px;
}

.page-disclaimer .usage-hero-grid {
  display: grid;
  gap: 28px;
  align-items: start;
}

.page-disclaimer .usage-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7.6vw, 66px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 14px 0 0;
  color: var(--ice);
}

.page-disclaimer .usage-hero-mark {
  color: var(--gold);
  display: inline-block;
}

.page-disclaimer .usage-hero-copy .lead {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--body-text);
}

.page-disclaimer .usage-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-disclaimer .usage-hero-actions .btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.page-disclaimer .usage-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-facts li {
  position: relative;
  padding-left: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

.page-disclaimer .usage-facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 6px;
  height: 6px;
  background: var(--cyan);
}

.page-disclaimer .usage-hero-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-2);
  box-shadow: var(--shadow-hard);
}

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

.page-disclaimer .usage-hero-figure figcaption {
  padding: 10px 12px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* ---------- 版本速览 ---------- */
.page-disclaimer .usage-versions {
  padding: 40px 0 44px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(11, 30, 58, 0.94), rgba(6, 18, 37, 0.55));
}

.page-disclaimer .usage-versions h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.6vw, 36px);
  line-height: 1.12;
  margin: 0 0 10px;
  color: var(--ice);
}

.page-disclaimer .usage-versions-lead {
  margin: 0 0 24px;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-disclaimer .usage-version-grid {
  display: grid;
  gap: 14px;
}

.page-disclaimer .usage-version {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 16px 20px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue);
  background: rgba(6, 18, 37, 0.74);
  transition: transform 220ms var(--ease), border-color 220ms var(--ease), background 220ms var(--ease);
}

.page-disclaimer .usage-version--family {
  border-left-color: var(--cyan);
}

.page-disclaimer .usage-version--enterprise {
  border-left-color: var(--gold);
}

.page-disclaimer .usage-version:hover,
.page-disclaimer .usage-version:focus-within {
  transform: translateY(-3px);
  border-color: var(--mist);
  background: rgba(11, 30, 58, 0.86);
}

.page-disclaimer .usage-version-tag {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.09em;
  color: var(--mist);
}

.page-disclaimer .usage-version-num {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(38px, 9vw, 56px);
  line-height: 1;
  color: var(--ice);
}

.page-disclaimer .usage-version-num small {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-disclaimer .usage-version-desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--body-text);
}

.page-disclaimer .usage-version-link {
  margin-top: auto;
  padding-top: 8px;
  font-size: 13.5px;
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 条款索引 ---------- */
.page-disclaimer .usage-toc {
  border-bottom: 1px solid var(--line);
  background: rgba(4, 12, 26, 0.86);
}

.page-disclaimer .usage-toc .wrap {
  padding-top: 14px;
  padding-bottom: 14px;
}

.page-disclaimer .usage-toc-label {
  margin: 0 0 10px;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-disclaimer .usage-toc-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .usage-toc-list a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--ice);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-disclaimer .usage-toc-list a .mono {
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.06em;
}

.page-disclaimer .usage-toc-list a:hover,
.page-disclaimer .usage-toc-list a:focus-visible {
  border-color: var(--cyan);
  background: rgba(0, 224, 198, 0.08);
}

/* ---------- 条款正文 ---------- */
.page-disclaimer .usage-clauses {
  padding-top: 6px;
}

.page-disclaimer .usage-clause {
  display: grid;
  gap: 10px;
  padding: 32px 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 96px;
}

.page-disclaimer .usage-clause:first-child {
  border-top: none;
}

.page-disclaimer .usage-clause:target {
  border-top-color: var(--cyan);
}

.page-disclaimer .usage-clause-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 6vw, 40px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: rgba(155, 176, 204, 0.75);
  transition: color 200ms var(--ease);
}

.page-disclaimer .usage-clause:target .usage-clause-num {
  color: var(--cyan);
}

.page-disclaimer .usage-clause-body h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 4.2vw, 32px);
  line-height: 1.22;
  color: var(--ice);
}

.page-disclaimer .usage-clause-body p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--body-text);
}

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

.page-disclaimer .usage-points {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-points li {
  position: relative;
  padding: 11px 0 11px 20px;
  border-top: 1px dashed var(--line);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--body-text);
}

.page-disclaimer .usage-points li:last-child {
  border-bottom: 1px dashed var(--line);
}

.page-disclaimer .usage-points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 1.32em;
  width: 6px;
  height: 6px;
  background: var(--cyan);
}

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

.page-disclaimer .usage-list {
  counter-reset: rule;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-list li {
  position: relative;
  padding: 12px 0 12px 38px;
  border-top: 1px dashed var(--line);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--body-text);
}

.page-disclaimer .usage-list li:last-child {
  border-bottom: 1px dashed var(--line);
}

.page-disclaimer .usage-list li::before {
  counter-increment: rule;
  content: counter(rule, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

/* ---------- 关键数字 ---------- */
.page-disclaimer .usage-numbers {
  display: grid;
  gap: 12px;
  margin: 18px 0 20px;
}

.page-disclaimer .usage-number {
  padding: 16px;
  border: 1px solid var(--line);
  background: rgba(11, 30, 58, 0.62);
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-disclaimer .usage-number:hover,
.page-disclaimer .usage-number:focus-within {
  border-color: var(--cyan);
  background: rgba(0, 224, 198, 0.07);
}

.page-disclaimer .usage-number-value {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(38px, 8.5vw, 56px);
  line-height: 1;
  color: var(--ice);
}

.page-disclaimer .usage-number-unit {
  margin-left: 6px;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-disclaimer .usage-number-label {
  margin: 10px 0 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-disclaimer .usage-number-note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
  transition: color 200ms var(--ease);
}

.page-disclaimer .usage-number:hover .usage-number-note,
.page-disclaimer .usage-number:focus-within .usage-number-note {
  color: var(--body-text);
}

/* ---------- 三色规范 ---------- */
.page-disclaimer .usage-rules {
  display: grid;
  gap: 14px;
  margin: 18px 0 20px;
}

.page-disclaimer .usage-rule {
  padding: 16px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
  background: rgba(6, 18, 37, 0.72);
}

.page-disclaimer .usage-rule--watch {
  border-top-color: var(--gold);
}

.page-disclaimer .usage-rule--stop {
  border-top-color: var(--stop);
}

.page-disclaimer .usage-rule h3 {
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 400;
}

.page-disclaimer .tag--stop {
  color: #FFD9E1;
  border-color: var(--stop);
  background: rgba(255, 92, 122, 0.14);
}

.page-disclaimer .usage-rule ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-rule li {
  position: relative;
  padding: 8px 0 8px 15px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--body-text);
}

.page-disclaimer .usage-rule li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.06em;
  width: 5px;
  height: 5px;
  background: var(--cyan);
}

.page-disclaimer .usage-rule--watch li::before {
  background: var(--gold);
}

.page-disclaimer .usage-rule--stop li::before {
  background: var(--stop);
}

/* ---------- 对照表 ---------- */
.page-disclaimer .usage-table-scroll {
  margin: 16px 0 20px;
  border: 1px solid var(--line);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .usage-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-disclaimer .usage-table-caption {
  padding: 10px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
  background: rgba(6, 18, 37, 0.9);
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-table th,
.page-disclaimer .usage-table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  line-height: 1.7;
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-table thead th {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--ice);
  background: rgba(26, 92, 255, 0.18);
}

.page-disclaimer .usage-table tbody th {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--mist);
  white-space: nowrap;
}

.page-disclaimer .usage-table td {
  color: var(--body-text);
}

.page-disclaimer .usage-table tbody tr:last-child th,
.page-disclaimer .usage-table tbody tr:last-child td {
  border-bottom: none;
}

/* ---------- 处理原则 ---------- */
.page-disclaimer .usage-terms {
  display: grid;
  gap: 14px;
  margin: 16px 0 0;
}

.page-disclaimer .usage-term {
  padding: 2px 0 2px 14px;
  border-left: 2px solid var(--line);
  transition: border-color 200ms var(--ease);
}

.page-disclaimer .usage-term:hover {
  border-left-color: var(--cyan);
}

.page-disclaimer .usage-term h3 {
  margin: 0 0 6px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  color: var(--ice);
}

.page-disclaimer .usage-term p {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--mist);
}

/* ---------- 联系方式 ---------- */
.page-disclaimer .usage-contact {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
}

.page-disclaimer .usage-contact-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  border: 1px solid var(--line);
  background: rgba(11, 30, 58, 0.6);
}

.page-disclaimer .usage-contact-label {
  margin: 0;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-disclaimer .usage-contact-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--ice);
  word-break: break-word;
}

.page-disclaimer .usage-contact-card .copy-btn {
  align-self: flex-start;
  min-height: 40px;
}

.page-disclaimer .usage-contact-note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-disclaimer .usage-numbers {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-disclaimer .usage-clause-body p,
  .page-disclaimer .usage-clause-body li {
    font-size: 16.5px;
  }
}

@media (min-width: 760px) {
  .page-disclaimer .usage-version-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .page-disclaimer .usage-contact-card--wide {
    grid-column: 1 / -1;
  }

  .page-disclaimer .usage-terms {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 24px;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-hero {
    padding: 28px 0 56px;
  }

  .page-disclaimer .usage-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: end;
  }

  .page-disclaimer .usage-clause {
    grid-template-columns: var(--rail) minmax(0, 1fr);
    gap: 32px;
    padding: 40px 0;
  }

  .page-disclaimer .usage-clause-rail {
    padding-top: 4px;
  }

  .page-disclaimer .usage-clause-body p,
  .page-disclaimer .usage-clause-body li {
    font-size: 17px;
  }
}

/* ---------- 打印 ---------- */
@media print {
  .page-disclaimer {
    background: #fff;
    color: #000;
    padding-bottom: 0;
  }

  .page-disclaimer .usage-hero-figure,
  .page-disclaimer .usage-toc,
  .page-disclaimer .usage-hero-actions,
  .page-disclaimer .usage-contact-card .copy-btn {
    display: none !important;
  }

  .page-disclaimer .usage-hero h1,
  .page-disclaimer .usage-clause-body h2,
  .page-disclaimer .usage-term h3,
  .page-disclaimer .usage-versions h2 {
    color: #000;
  }

  .page-disclaimer .usage-hero-mark,
  .page-disclaimer .usage-clause-num {
    color: #333;
  }

  .page-disclaimer p,
  .page-disclaimer li,
  .page-disclaimer td,
  .page-disclaimer th,
  .page-disclaimer .usage-number-note,
  .page-disclaimer .usage-contact-value,
  .page-disclaimer .usage-contact-note {
    color: #111 !important;
  }

  .page-disclaimer .usage-clause {
    grid-template-columns: 64px 1fr;
    border-top: 1px solid #999;
    padding: 20px 0;
    break-inside: avoid;
  }

  .page-disclaimer .usage-table-scroll {
    overflow: visible;
    border-color: #999;
  }

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

  .page-disclaimer .usage-contact-card,
  .page-disclaimer .usage-version,
  .page-disclaimer .usage-number,
  .page-disclaimer .usage-rule {
    border-color: #999;
    background: #fff;
    box-shadow: none;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-version,
  .page-disclaimer .usage-number,
  .page-disclaimer .usage-number-note,
  .page-disclaimer .usage-clause-num,
  .page-disclaimer .usage-term {
    transition: none;
  }

  .page-disclaimer .usage-version:hover,
  .page-disclaimer .usage-version:focus-within {
    transform: none;
  }
}