/* ============================================
   使用声明与免责条款 · 页面专属样式
   作用域：.page-disclaimer
   ============================================ */

.page-disclaimer {
  --disclaimer-chip: 44px;
  --disclaimer-gap: 1.5rem;
  position: relative;
  overflow: hidden;
  padding: 2.5rem 0 5rem;
  background:
    radial-gradient(circle at 86% -4%, rgba(0, 212, 255, 0.12), transparent 30rem),
    radial-gradient(circle at 6% 26%, rgba(57, 255, 20, 0.04), transparent 18rem),
    var(--bg-main);
}

/* 背景网格：以水平线与纵向线建立档案目录感 */
.page-disclaimer .disclaimer-grid-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background-image:
    linear-gradient(180deg, var(--bg-main) 0%, transparent 5%, transparent 95%, var(--bg-main) 100%),
    linear-gradient(90deg, rgba(30, 43, 79, 0.32) 1px, transparent 1px),
    linear-gradient(rgba(30, 43, 79, 0.32) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px, 48px 48px;
  opacity: 0.7;
  z-index: 0;
}

.page-disclaimer .disclaimer-masthead,
.page-disclaimer .clause-section,
.page-disclaimer .visual-audit-section,
.page-disclaimer .contact-section {
  position: relative;
  z-index: 1;
}

/* 面包屑 */
.page-disclaimer .breadcrumbs {
  margin-bottom: 2rem;
}

.page-disclaimer .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.page-disclaimer .breadcrumbs a {
  color: var(--color-data);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  text-decoration: none;
}

.page-disclaimer .breadcrumbs a:hover {
  color: var(--color-neon);
}

.page-disclaimer .breadcrumbs li:not(:first-child) {
  color: var(--color-dim);
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

/* 页首导引区 */
.page-disclaimer .disclaimer-masthead {
  padding-bottom: 3.5rem;
  border-bottom: 2px solid var(--color-line);
}

.page-disclaimer .masthead-layout {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.25rem;
}

.page-disclaimer .masthead-copy .section-kicker {
  display: inline-block;
  color: var(--color-neon);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.18em;
}

.page-disclaimer .masthead-copy h1 {
  max-width: 13em;
  margin: 1rem 0 1.25rem;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 1.8rem + 4vw, 4.25rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.page-disclaimer .masthead-lead {
  max-width: 42rem;
  margin: 0;
  color: var(--color-dim);
  font-size: 1rem;
  line-height: 1.8;
}

.page-disclaimer .masthead-file {
  display: none;
}

/* 目录条 */
.page-disclaimer .toc-strip {
  display: flex;
  gap: 0.75rem;
  margin-top: 2rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scrollbar-width: thin;
}

.page-disclaimer .toc-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.9rem;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.875rem;
  text-decoration: none;
  background: var(--bg-panel);
  border: 1px solid var(--color-line);
  white-space: nowrap;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.page-disclaimer .toc-item span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-neon);
}

.page-disclaimer .toc-item:hover {
  background: var(--color-neon);
  border-color: var(--color-neon);
  color: var(--bg-deep);
}

.page-disclaimer .toc-item:hover span {
  color: var(--bg-deep);
}

/* 章节标题 */
.page-disclaimer .clause-section {
  padding-top: 3.25rem;
}

.page-disclaimer .section-head {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-line);
}

.page-disclaimer .section-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: 0.5rem;
  background: var(--color-neon);
  color: var(--bg-deep);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  clip-path: polygon(0 0, 100% 0, 100% 78%, 78% 100%, 0 100%);
}

.page-disclaimer .section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 1.35rem + 2vw, 2.4rem);
  line-height: 1.2;
  color: var(--color-text);
}

.page-disclaimer .section-head p {
  margin: 0;
  color: var(--color-dim);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-disclaimer .section-head p a {
  color: var(--color-data);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-disclaimer .section-head p a:hover {
  color: var(--color-neon);
}

/* 条文列表 */
.page-disclaimer .clause-stack {
  display: grid;
  padding-bottom: 0.5rem;
}

.page-disclaimer .clause {
  position: relative;
  display: grid;
  grid-template-columns: var(--disclaimer-chip) minmax(0, 1fr);
  gap: 1rem;
  padding: 1.5rem 0;
  border-top: 1px dashed rgba(30, 43, 79, 0.85);
  transition: background 0.3s ease, padding-left 0.3s ease;
}

.page-disclaimer .clause:first-child {
  border-top: 2px solid var(--color-line);
}

.page-disclaimer .clause:last-child {
  border-bottom: none;
}

.page-disclaimer .clause::after {
  content: "";
  position: absolute;
  top: -1px;
  right: 1.25rem;
  width: 84px;
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    var(--color-orange) 0 6px,
    transparent 6px 12px
  );
  transform: rotate(-4deg);
  opacity: 0.4;
  pointer-events: none;
}

.page-disclaimer .clause:hover {
  background: linear-gradient(90deg, rgba(57, 255, 20, 0.06), transparent 72%);
  padding-left: 0.5rem;
}

.page-disclaimer .clause-index {
  display: grid;
  place-items: center;
  width: var(--disclaimer-chip);
  height: var(--disclaimer-chip);
  background: var(--color-neon);
  color: var(--bg-deep);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  clip-path: polygon(0 0, 100% 0, 100% 80%, 82% 100%, 0 100%);
  transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}

.page-disclaimer .clause:hover .clause-index {
  background: var(--color-orange);
  color: var(--color-text);
  transform: translateY(-3px) rotate(-2deg);
}

.page-disclaimer .clause-content {
  min-width: 0;
}

.page-disclaimer .clause-content h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.125rem;
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--color-text);
}

.page-disclaimer .clause-content p {
  max-width: 62ch;
  margin: 0;
  color: var(--color-dim);
  font-size: 0.9375rem;
  line-height: 1.85;
}

.page-disclaimer .clause-content p a {
  color: var(--color-data);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-disclaimer .clause-content p a:hover {
  color: var(--color-neon);
}

/* 橙色警示框 */
.page-disclaimer .warning-box {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  margin: 1.75rem 0;
  padding: 1.25rem 1.25rem 1.25rem 1.5rem;
  background: linear-gradient(135deg, rgba(255, 106, 0, 0.18), rgba(255, 106, 0, 0.05));
  border-left: 4px solid var(--color-orange);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
}

.page-disclaimer .warning-symbol {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  background: var(--color-orange);
  color: var(--bg-deep);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  clip-path: polygon(0 0, 100% 0, 100% 78%, 78% 100%, 0 100%);
}

.page-disclaimer .warning-box p {
  margin: 0;
  color: var(--color-text);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-disclaimer .warning-box p strong {
  color: var(--color-text);
  font-family: var(--font-display);
  font-weight: 700;
}

/* 可展开补充说明 */
.page-disclaimer .expandable-note {
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: var(--bg-panel);
  border: 1px solid var(--color-line);
}

.page-disclaimer .expandable-note summary {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  cursor: pointer;
  color: var(--color-data);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  user-select: none;
}

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

.page-disclaimer .expandable-note .expand-marker {
  display: inline-block;
  color: var(--color-neon);
  font-family: var(--font-mono);
  font-size: 1rem;
  transition: transform 0.25s ease;
}

.page-disclaimer .expandable-note[open] summary .expand-marker {
  transform: rotate(45deg);
}

.page-disclaimer .expandable-note p {
  margin: 1rem 0 0;
  color: var(--color-dim);
  font-size: 0.9375rem;
  line-height: 1.8;
}

/* 文档归档视觉区 */
.page-disclaimer .visual-audit-section {
  padding-top: 3.5rem;
}

.page-disclaimer .visual-audit-card {
  display: grid;
  gap: 1.5rem;
  padding: 1.25rem;
  background: var(--bg-panel);
  border: 1px solid var(--color-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
  box-shadow: var(--shadow);
}

.page-disclaimer .visual-audit-copy .section-kicker {
  display: inline-block;
  margin-bottom: 0.75rem;
  color: var(--color-orange);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.16em;
}

.page-disclaimer .visual-audit-copy h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 1.2rem + 1.6vw, 2.1rem);
  line-height: 1.25;
  color: var(--color-text);
}

.page-disclaimer .visual-audit-copy p {
  margin: 0 0 1rem;
  color: var(--color-dim);
  font-size: 0.9375rem;
  line-height: 1.85;
}

.page-disclaimer .visual-audit-copy p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .visual-audit-figure {
  min-width: 0;
}

.page-disclaimer .visual-audit-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 800px;
  margin: 0 auto;
  object-fit: cover;
  border: 1px solid var(--color-line);
}

/* 联系区 */
.page-disclaimer .contact-section {
  padding-top: 3.5rem;
}

.page-disclaimer .contact-section .section-head {
  margin-bottom: 2rem;
}

.page-disclaimer .contact-grid {
  display: grid;
  gap: 1rem;
}

.page-disclaimer .contact-item {
  position: relative;
  padding: 1.5rem 1.5rem 1.5rem 1.75rem;
  background: linear-gradient(135deg, rgba(17, 27, 61, 0.95), rgba(10, 17, 40, 0.92));
  border: 1px solid var(--color-line);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-disclaimer .contact-item:hover {
  border-color: var(--color-data);
  transform: translateY(-4px);
}

.page-disclaimer .contact-label {
  display: block;
  margin-bottom: 0.75rem;
  color: var(--color-data);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

.page-disclaimer .contact-link {
  display: block;
  margin-bottom: 0.65rem;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 1.0625rem;
  text-decoration: none;
  word-break: break-all;
}

.page-disclaimer .contact-link:hover {
  color: var(--color-neon);
}

.page-disclaimer .contact-address {
  margin-bottom: 0.65rem;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 1.0625rem;
}

.page-disclaimer .contact-item p {
  margin: 0;
  color: var(--color-dim);
  font-size: 0.875rem;
  line-height: 1.7;
}

/* ===== 平板与桌面布局 ===== */
@media (min-width: 760px) {
  .page-disclaimer {
    padding: 3rem 0 6rem;
  }

  .page-disclaimer .masthead-layout {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 2rem;
  }

  .page-disclaimer .masthead-file {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.75rem;
    padding-bottom: 0.75rem;
  }

  .page-disclaimer .file-num {
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--color-line);
    color: var(--color-dim);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    letter-spacing: 0.12em;
  }

  .page-disclaimer .file-mark {
    position: relative;
    display: block;
    width: 72px;
    height: 72px;
    border: 2px solid var(--color-data);
    clip-path: polygon(25% 0, 100% 0, 100% 75%, 75% 100%, 0 100%, 0 25%);
  }

  .page-disclaimer .file-mark::after {
    content: "";
    position: absolute;
    inset: 12px;
    border: 1px dashed var(--color-orange);
    clip-path: inherit;
  }

  .page-disclaimer .toc-strip {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0.875rem;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-disclaimer .toc-item {
    justify-content: center;
  }

  .page-disclaimer .clause-section {
    padding-top: 4rem;
  }

  .page-disclaimer .section-head {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 2rem;
    align-items: start;
    margin-bottom: 2.25rem;
  }

  .page-disclaimer .section-head .section-index {
    grid-row: 1 / 3;
    margin-bottom: 0;
  }

  .page-disclaimer .section-head h2 {
    grid-column: 2;
    grid-row: 1;
  }

  .page-disclaimer .section-head p {
    grid-column: 2;
    grid-row: 2;
  }

  .page-disclaimer .clause {
    grid-template-columns: var(--disclaimer-chip) minmax(0, 1fr);
    gap: var(--disclaimer-gap);
    padding: 1.75rem 0;
  }

  .page-disclaimer .warning-box {
    margin: 2.25rem 0;
    padding: 1.5rem 1.75rem;
  }

  .page-disclaimer .contact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

@media (min-width: 1020px) {
  .page-disclaimer .clause {
    grid-template-columns: 120px minmax(0, 1fr);
  }

  .page-disclaimer .clause-index {
    margin-top: 0.25rem;
  }

  .page-disclaimer .visual-audit-card {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 2.5rem;
    align-items: center;
    padding: 2rem;
  }

  .page-disclaimer .visual-audit-figure {
    justify-self: end;
    width: 100%;
    max-width: 640px;
  }

  .page-disclaimer .visual-audit-img {
    margin: 0;
  }

  .page-disclaimer .contact-grid {
    gap: 1.5rem;
  }
}