/* ===== 使用说明页 · 页面作用域 ===== */
.page-disclaimer {
  display: block;
}

/* ---- 面包屑 ---- */
.page-disclaimer .crumbs {
  padding: 18px 0 0;
}

/* ---- 页首 ---- */
.page-disclaimer .doc-hero {
  display: grid;
  gap: 26px;
  padding: 26px 0 30px;
  border-bottom: 1px solid var(--line-faint);
}

.page-disclaimer .doc-hero__text {
  max-width: 46ch;
}

.page-disclaimer .doc-hero h1 {
  margin: 10px 0 0;
  font-size: clamp(30px, 7.2vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--text);
  text-align: left;
}

.page-disclaimer .doc-hero .lead {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
  max-width: 40ch;
}

.page-disclaimer .doc-hero__art {
  margin: 0;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-faint);
  border-radius: var(--radius);
  background:
    repeating-linear-gradient(135deg, rgba(58, 63, 77, 0.18) 0 1px, transparent 1px 9px),
    var(--panel);
}

.page-disclaimer .doc-hero__art::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(155deg, rgba(34, 227, 211, 0.12), transparent 58%);
}

.page-disclaimer .doc-hero__art img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

/* ---- 主体双栏 ---- */
.page-disclaimer .doc-grid {
  display: grid;
  gap: 30px;
  padding: 30px 0 72px;
}

/* ---- 章节目录 ---- */
.page-disclaimer .doc-toc {
  align-self: start;
  padding: 18px;
  border: 1px solid var(--line-faint);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-disclaimer .doc-toc__title {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-disclaimer .doc-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-disclaimer .doc-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 8px 8px 10px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-disclaimer .doc-toc__list a:hover,
.page-disclaimer .doc-toc__list a:focus-visible {
  border-left-color: var(--brand-a);
  background: var(--brand-a-tint);
  color: var(--brand-a-hi);
}

.page-disclaimer .doc-toc__num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
  flex: 0 0 auto;
}

.page-disclaimer .doc-toc__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-faint);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-disclaimer .doc-toc__note a {
  color: var(--brand-a);
  text-decoration: none;
  border-bottom: 1px solid var(--brand-a-tint);
}

.page-disclaimer .doc-toc__note a:hover {
  color: var(--brand-a-hi);
}

/* ---- 章节 ---- */
.page-disclaimer .doc-sec {
  padding: 0 0 30px;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--line-faint);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-disclaimer .doc-sec:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: 0;
}

.page-disclaimer .doc-sec__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.page-disclaimer .doc-sec__num {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 34px;
  padding: 0 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--brand-a-tint);
  color: var(--brand-a);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-disclaimer .doc-sec__title {
  margin: 0;
  font-size: clamp(20px, 3.6vw, 28px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-disclaimer .doc-sec__lead {
  margin: 0 0 6px;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---- 条款列表 ---- */
.page-disclaimer .clause {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-disclaimer .clause > li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  padding: 18px 0;
  border-top: 1px solid var(--line-faint);
}

.page-disclaimer .clause > li:first-child {
  border-top: 0;
}

.page-disclaimer .clause__num {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding-top: 3px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--brand-a);
  white-space: nowrap;
}

.page-disclaimer .clause__num::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  background: var(--brand-a);
}

.page-disclaimer .clause__main {
  min-width: 0;
}

.page-disclaimer .clause__title {
  margin: 0 0 6px;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  letter-spacing: 0.005em;
}

.page-disclaimer .clause__anchor {
  margin-left: 8px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  color: var(--brand-a);
  text-decoration: none;
  opacity: 0;
  transition: opacity 0.2s var(--ease);
}

.page-disclaimer .clause__title:hover .clause__anchor,
.page-disclaimer .clause__anchor:focus-visible {
  opacity: 1;
}

.page-disclaimer .clause__text {
  margin: 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-disclaimer .clause__text a {
  color: var(--brand-c);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 227, 211, 0.35);
}

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

/* ---- 强调块 ---- */
.page-disclaimer .doc-callout {
  margin: 20px 0 0;
  padding: 18px 20px;
  border: 1px solid var(--line-faint);
  border-left: 3px solid var(--brand-b);
  border-radius: var(--radius);
  background: linear-gradient(120deg, var(--brand-b-tint), transparent 70%), var(--panel-2);
}

.page-disclaimer .doc-callout__title {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
}

.page-disclaimer .doc-callout__text {
  margin: 0;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---- 出口卡片 ---- */
.page-disclaimer .exit-grid {
  display: grid;
  gap: 14px;
  margin-top: 10px;
}

.page-disclaimer .exit-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  color: inherit;
  text-decoration: none;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-disclaimer .exit-card:hover,
.page-disclaimer .exit-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--brand-a);
  background: linear-gradient(150deg, var(--brand-a-tint), transparent 65%), var(--panel);
}

.page-disclaimer .exit-card__tag {
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-c);
  border: 1px solid rgba(34, 227, 211, 0.32);
  border-radius: 2px;
  padding: 3px 7px;
}

.page-disclaimer .exit-card__title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}

.page-disclaimer .exit-card__text {
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

.page-disclaimer .exit-card__go {
  margin-top: 4px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--brand-a);
}

/* ---- 响应式 ---- */
@media (max-width: 479px) {
  .page-disclaimer .clause > li {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .page-disclaimer .clause__num {
    padding-top: 0;
  }

  .page-disclaimer .clause__anchor {
    opacity: 1;
  }
}

@media (min-width: 720px) {
  .page-disclaimer .exit-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .doc-hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 340px);
    gap: 48px;
    align-items: center;
    padding: 44px 0 40px;
  }

  .page-disclaimer .doc-hero__art img {
    aspect-ratio: 4 / 3;
  }

  .page-disclaimer .doc-grid {
    gap: 44px;
    padding: 42px 0 88px;
  }
}

@media (min-width: 1000px) {
  .page-disclaimer .doc-grid {
    grid-template-columns: minmax(210px, 240px) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-disclaimer .doc-toc {
    position: sticky;
    top: calc(var(--header-h) + 22px);
    background: linear-gradient(180deg, var(--brand-b-tint), transparent 62%), var(--panel);
  }
}

/* ---- 打印 ---- */
@media print {
  .page-disclaimer .doc-toc,
  .page-disclaimer .clause__anchor,
  .page-disclaimer .exit-card__go {
    display: none;
  }

  .page-disclaimer .doc-hero__art {
    display: none;
  }

  .page-disclaimer .doc-grid {
    display: block;
  }

  .page-disclaimer .doc-sec,
  .page-disclaimer .clause > li {
    border-color: #999;
    break-inside: avoid;
  }
}