/* ===== 使用说明与免责声明页 · 页面专属样式 ===== */
.page-disclaimer {
  --page-serif: Georgia, 'Times New Roman', 'Songti SC', 'Noto Serif CJK SC', serif;
  background-color: var(--color-paper);
  background-image:
    linear-gradient(rgba(27, 27, 27, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 27, 27, 0.025) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 0.925rem;
  line-height: 1.75;
  min-height: 100vh;
}

.page-disclaimer .terms-paper {
  max-width: 920px;
  margin-inline: auto;
  padding: clamp(1.75rem, 5vw, 4rem);
  background:
    radial-gradient(circle at 92% 2%, rgba(255, 215, 0, 0.12), transparent 170px),
    rgba(255, 255, 255, 0.32);
  border: 1px solid rgba(27, 27, 27, 0.08);
  box-shadow: 0 24px 72px rgba(13, 27, 42, 0.16);
}

.page-disclaimer .breadcrumb {
  margin-bottom: 1.25rem;
  font-size: 0.8rem;
}

.page-disclaimer .page-kicker {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.page-disclaimer .page-title {
  font-family: var(--page-serif);
  font-size: clamp(1.8rem, 4.5vw, 2.75rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0 0 0.75rem;
  padding-bottom: 0.8rem;
  border-bottom: 2px solid var(--color-gold);
  color: var(--color-ink);
}

.page-disclaimer .page-description {
  margin: 0;
  max-width: 58ch;
  font-size: 0.95rem;
  color: var(--color-gray);
}

.page-disclaimer .terms-intro {
  margin: 1.5rem 0 0;
  padding: 0.85rem 1rem;
  background: rgba(255, 215, 0, 0.14);
  border-left: 3px solid var(--color-gold);
  color: var(--color-gray);
  font-size: 0.9rem;
}

.page-disclaimer .terms-toc {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.15rem;
  margin: 1.5rem 0 2rem;
  padding: 0.85rem 1rem;
  border-left: 3px solid var(--color-primary);
  background: rgba(255, 255, 255, 0.42);
  font-size: 0.82rem;
}

.page-disclaimer .terms-toc a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  padding: 0.4rem 0.25rem;
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid rgba(27, 27, 27, 0.10);
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}

.page-disclaimer .terms-toc a:hover {
  color: var(--color-ink);
  border-bottom-color: var(--color-gold);
  background: rgba(255, 215, 0, 0.10);
}

.page-disclaimer .terms-toc a span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-gray);
}

.page-disclaimer .terms-meta {
  display: grid;
  gap: 0.55rem;
  margin: 0 0 1.25rem;
  padding: 0.9rem 1rem;
  border: 1px dashed rgba(13, 27, 42, 0.28);
  background: rgba(255, 255, 255, 0.26);
  font-size: 0.84rem;
}

.page-disclaimer .terms-meta div {
  display: grid;
  grid-template-columns: 5.5em 1fr;
  gap: 0.5rem;
}

.page-disclaimer .terms-meta dt {
  color: var(--color-gray);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.page-disclaimer .terms-meta dd {
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 0.86rem;
}

.page-disclaimer .terms-list {
  border-bottom: 1px solid rgba(27, 27, 27, 0.12);
}

.page-disclaimer .terms-item {
  border-top: 1px solid rgba(27, 27, 27, 0.12);
}

.page-disclaimer .terms-summary {
  display: flex;
  flex-wrap: nowrap;
  align-items: baseline;
  gap: 0.6rem;
  padding: 1.05rem 0.1rem;
  cursor: pointer;
  list-style: none;
}

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

.page-disclaimer .terms-summary .terms-index {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-primary);
}

.page-disclaimer .terms-summary .terms-index::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  background: var(--color-gold);
  flex: 0 0 auto;
}

.page-disclaimer .terms-summary .terms-heading {
  flex: 1;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-disclaimer .terms-summary::after {
  content: "−";
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--color-primary);
  transition: color var(--t-fast), transform var(--t-fast);
}

.page-disclaimer .terms-item:not([open]) .terms-summary::after {
  content: "+";
  transform: translateY(0.05em);
}

.page-disclaimer .terms-summary:hover .terms-heading {
  text-decoration: underline;
  text-decoration-color: var(--color-gold);
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

.page-disclaimer .terms-summary:hover::after {
  color: var(--color-accent);
}

.page-disclaimer .terms-tag {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--color-gray);
  border: 1px solid rgba(27, 27, 27, 0.20);
  padding: 0.1em 0.5em;
}

.page-disclaimer .terms-body {
  padding: 0 0.5rem 1.2rem 1.9rem;
  max-width: 66ch;
  color: var(--color-gray);
  font-size: 0.9rem;
}

.page-disclaimer .terms-body p {
  margin: 0 0 0.75rem;
}

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

.page-disclaimer .trust-quote {
  margin: 2.5rem 0;
  padding: 1.6rem 1.8rem;
  background: var(--color-primary-deep);
  border-left: 4px solid var(--color-accent);
  color: var(--color-paper);
  font-family: var(--page-serif);
  font-size: 1.02rem;
  line-height: 1.9;
}

.page-disclaimer .trust-quote p {
  margin: 0;
}

.page-disclaimer .trust-quote cite {
  display: block;
  margin-top: 0.9rem;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--color-soft);
}

.page-disclaimer .terms-update {
  margin: 2.25rem 0 1rem;
  padding: 1.6rem 1.5rem;
  border: 1px solid rgba(13, 27, 42, 0.16);
  background: rgba(255, 255, 255, 0.30);
}

.page-disclaimer .terms-update h2 {
  margin: 0 0 1.1rem;
  font-family: var(--page-serif);
  font-size: 1.35rem;
  color: var(--color-ink);
}

.page-disclaimer .terms-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-disclaimer .terms-facts li {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px dashed rgba(27, 27, 27, 0.14);
  font-size: 0.88rem;
}

.page-disclaimer .terms-facts li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-disclaimer .terms-facts .fact-key {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.9rem;
}

.page-disclaimer .terms-facts .fact-key::before {
  content: "";
  width: 0.28rem;
  height: 0.28rem;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(57, 255, 20, 0.18);
}

.page-disclaimer .terms-facts .fact-value {
  color: var(--color-gray);
  line-height: 1.7;
}

.page-disclaimer .copy-mark {
  display: inline-block;
  margin: 0 0.15em;
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--color-primary);
  transition: transform var(--t-fast), color var(--t-fast), background var(--t-fast), box-shadow var(--t-fast);
}

.page-disclaimer .copy-mark:hover {
  transform: scale(2);
  color: var(--color-gold);
  background: var(--color-ink);
  box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.18);
}

.page-disclaimer .data-flow-figure {
  margin: 2.5rem auto 1.5rem;
  max-width: 720px;
  padding: 1.5rem 1.5rem 1rem;
  border: 1px solid rgba(27, 27, 27, 0.14);
  background: rgba(255, 255, 255, 0.35);
}

.page-disclaimer .data-flow-figure img {
  display: block;
  max-width: 100%;
  height: auto;
  margin-inline: auto;
}

.page-disclaimer .data-flow-figure figcaption {
  margin-top: 0.75rem;
  text-align: center;
  font-size: 0.78rem;
  color: var(--color-gray);
}

.page-disclaimer .terms-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
  padding-top: 1.4rem;
  border-top: 1px solid rgba(27, 27, 27, 0.16);
}

.page-disclaimer .btn {
  border-radius: var(--radius);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  padding: 0.6rem 1.25rem;
  text-decoration: none;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}

.page-disclaimer .btn-primary {
  background: var(--color-primary);
  color: var(--color-paper);
  border: 1px solid var(--color-primary);
}

.page-disclaimer .btn-primary:hover {
  background: var(--color-primary-deep);
  border-color: var(--color-primary-deep);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.22);
}

.page-disclaimer .btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid rgba(13, 27, 42, 0.40);
}

.page-disclaimer .btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-ink);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.18);
}

@media (min-width: 720px) {
  .page-disclaimer .terms-summary {
    gap: 0.9rem;
    padding-block: 1.25rem;
  }

  .page-disclaimer .terms-body {
    padding-left: 2.1rem;
    font-size: 0.9rem;
  }

  .page-disclaimer .terms-tag {
    display: inline-block;
  }

  .page-disclaimer .terms-facts li {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 1rem;
    align-items: baseline;
  }

  .page-disclaimer .terms-facts .fact-value {
    font-size: 0.86rem;
  }
}

@media (min-width: 960px) {
  .page-disclaimer .terms-paper {
    padding: 4.5rem;
  }

  .page-disclaimer .terms-update {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 0.5rem 2.25rem;
  }

  .page-disclaimer .terms-update .page-kicker {
    grid-column: 1;
    grid-row: 1 / 2;
  }

  .page-disclaimer .terms-update h2 {
    grid-column: 1;
    grid-row: 2 / 3;
  }

  .page-disclaimer .terms-update .terms-facts {
    grid-column: 2;
    grid-row: 1 / 3;
  }

  .page-disclaimer .trust-quote {
    margin: 3.5rem 0;
    padding: 2rem 2.5rem;
  }
}