.page-disclaimer {
  --disc-max: 880px;
  --disc-hair: 1px;
  --disc-toc-top: 72px;
  background: var(--paper);
}

/* ============ 页头 ============ */
.page-disclaimer__hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--ink-900);
  color: var(--ink-text);
  padding: clamp(40px, 6vw, 72px) 0 clamp(52px, 7vw, 92px);
}

.page-disclaimer__hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
  opacity: .32;
}

.page-disclaimer__hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-disclaimer__hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(11, 15, 20, .78) 0%, rgba(11, 15, 20, .95) 58%, var(--ink-900) 100%),
    radial-gradient(120% 90% at 88% 0%, rgba(18, 211, 232, .18), transparent 62%);
}

.page-disclaimer__hero .breadcrumb {
  margin: 0 0 clamp(20px, 3vw, 32px);
}

.page-disclaimer__hero .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--ink-muted);
}

.page-disclaimer__hero .breadcrumb li {
  display: inline-flex;
  align-items: center;
}

.page-disclaimer__hero .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line-dark);
}

.page-disclaimer__hero .breadcrumb a {
  color: var(--ink-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

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

.page-disclaimer__hero .eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-disclaimer__title {
  margin: 0 0 20px;
  max-width: 15em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 5.6vw, 54px);
  line-height: 1.14;
  letter-spacing: .05em;
  color: #fff;
}

.page-disclaimer__lead {
  max-width: 44em;
  margin: 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--ink-text);
}

.page-disclaimer__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 40px;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: clamp(16px, 2.4vw, 22px) 0 0;
  border-top: var(--disc-hair) solid var(--line-dark);
}

.page-disclaimer__meta > div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-disclaimer__meta dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.page-disclaimer__meta dd {
  margin: 0;
  font-size: 14px;
  color: #fff;
}

/* ============ 吸顶目录 ============ */
.page-disclaimer__toc {
  position: sticky;
  top: var(--disc-toc-top);
  z-index: 20;
  background: rgba(246, 247, 249, .95);
  border-bottom: var(--disc-hair) solid var(--line-light);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.page-disclaimer__toc ol {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 11px 0;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-disclaimer__toc li {
  flex: none;
}

.page-disclaimer__toc a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: var(--disc-hair) solid var(--line-light);
  background: var(--card);
  color: var(--text);
  font-size: 13.5px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.page-disclaimer__toc a .mono {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--cyan-deep);
}

.page-disclaimer__toc a:hover,
.page-disclaimer__toc a:focus-visible {
  border-color: var(--cyan-deep);
  color: var(--cyan-deep);
}

/* ============ 条款区 ============ */
.page-disclaimer__clauses {
  padding: clamp(32px, 5vw, 56px) 0 clamp(52px, 7vw, 84px);
}

.page-disclaimer__doc {
  max-width: var(--disc-max);
  margin: 0 auto;
}

.page-disclaimer .clause {
  position: relative;
  margin: 0 0 14px;
  background: var(--card);
  border: var(--disc-hair) solid var(--line-light);
  scroll-margin-top: 148px;
}

.page-disclaimer .clause::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 48px;
  height: 3px;
  background: var(--cyan);
}

.page-disclaimer .clause[open]::before {
  background: var(--orange);
}

.page-disclaimer .clause__summary {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  list-style: none;
}

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

.page-disclaimer .clause__summary::marker {
  content: "";
}

.page-disclaimer .clause__index {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--cyan-deep);
}

.page-disclaimer .clause__heading {
  font-family: var(--font-display);
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 800;
  letter-spacing: .03em;
  line-height: 1.35;
  color: var(--text);
}

.page-disclaimer .clause__badge {
  padding: 3px 9px;
  border: var(--disc-hair) solid var(--line-light);
  font-size: 11.5px;
  color: var(--muted);
  white-space: nowrap;
}

.page-disclaimer .clause__toggle {
  position: relative;
  width: 16px;
  height: 16px;
  flex: none;
}

.page-disclaimer .clause__toggle::before,
.page-disclaimer .clause__toggle::after {
  content: "";
  position: absolute;
  background: var(--muted);
  transition: transform var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease);
}

.page-disclaimer .clause__toggle::before {
  top: 7.5px;
  left: 0;
  width: 16px;
  height: 1.5px;
}

.page-disclaimer .clause__toggle::after {
  left: 7.5px;
  top: 0;
  width: 1.5px;
  height: 16px;
}

.page-disclaimer .clause[open] .clause__toggle::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-disclaimer .clause__content {
  padding: 18px 24px 26px;
  border-top: 1px dashed var(--line-light);
}

.page-disclaimer .clause__content p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

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

.page-disclaimer .clause__content a {
  color: var(--cyan-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(11, 124, 140, .35);
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

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

.page-disclaimer .clause__content .mono {
  color: var(--text);
  font-size: 13.5px;
}

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

.page-disclaimer .clause__list li {
  position: relative;
  padding: 9px 0 9px 26px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  border-bottom: 1px dashed var(--line-light);
}

.page-disclaimer .clause__list li:last-child {
  border-bottom: 0;
}

.page-disclaimer .clause__list li::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 19px;
  width: 7px;
  height: 7px;
  border: 1px solid var(--cyan-deep);
}

.page-disclaimer .clause__list strong {
  color: var(--text);
  font-weight: 700;
}

.page-disclaimer .cite-label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-disclaimer .cite-sample {
  margin: 0;
  padding: 16px 18px;
  background: var(--paper);
  border: var(--disc-hair) solid var(--line-light);
  border-left: 3px solid var(--cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.85;
  letter-spacing: -.01em;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
}

/* ============ 页尾动作区 ============ */
.page-disclaimer__cta {
  background: var(--ink-800);
  color: var(--ink-text);
  padding: clamp(40px, 6vw, 64px) 0;
}

.page-disclaimer__cta-inner {
  display: grid;
  gap: 24px;
}

.page-disclaimer__cta-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 28px);
  letter-spacing: .04em;
  line-height: 1.3;
  color: #fff;
}

.page-disclaimer__cta-text p {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-text);
}

.page-disclaimer__cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ============ 响应式 ============ */
@media (max-width: 900px) {
  .page-disclaimer {
    --disc-toc-top: 64px;
  }

  .page-disclaimer .clause {
    scroll-margin-top: 132px;
  }
}

@media (max-width: 620px) {
  .page-disclaimer__hero {
    padding: 32px 0 56px;
  }

  .page-disclaimer__title {
    max-width: none;
    letter-spacing: .03em;
  }

  .page-disclaimer__meta {
    gap: 14px 24px;
  }

  .page-disclaimer__toc ol {
    padding: 9px 0;
  }

  .page-disclaimer__toc a {
    padding: 6px 12px;
    font-size: 13px;
  }

  .page-disclaimer .clause__summary {
    grid-template-columns: auto 1fr auto;
    column-gap: 12px;
    row-gap: 4px;
    padding: 16px;
  }

  .page-disclaimer .clause__index {
    grid-column: 1;
    grid-row: 1 / span 2;
    align-self: start;
    padding-top: 3px;
  }

  .page-disclaimer .clause__heading {
    grid-column: 2;
    grid-row: 1;
  }

  .page-disclaimer .clause__badge {
    grid-column: 2;
    grid-row: 2;
    justify-self: start;
  }

  .page-disclaimer .clause__toggle {
    grid-column: 3;
    grid-row: 1 / span 2;
    align-self: center;
  }

  .page-disclaimer .clause__content {
    padding: 16px 16px 22px;
  }

  .page-disclaimer .cite-sample {
    font-size: 12px;
    padding: 14px;
  }

  .page-disclaimer__cta-actions .btn {
    flex: 1 1 auto;
    justify-content: center;
  }
}

@media (min-width: 760px) {
  .page-disclaimer__cta-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }

  .page-disclaimer__cta-actions {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .clause__toggle::before,
  .page-disclaimer .clause__toggle::after,
  .page-disclaimer__toc a,
  .page-disclaimer__hero .breadcrumb a,
  .page-disclaimer .clause__content a {
    transition: none;
  }
}