/* ===== 使用说明页 · page-disclaimer ===== */
.page-disclaimer {
  --plate-line: #24304f;
  --plate-face: linear-gradient(150deg, rgba(38, 50, 86, 0.92), rgba(13, 20, 40, 0.5));
  --rule-soft: rgba(143, 158, 196, 0.2);
  padding-bottom: 76px;
}

/* --- 首屏：左侧大标题，右侧克制装饰图 --- */
.page-disclaimer .disclaimer-hero {
  display: grid;
  gap: 34px;
  padding-block: 28px 52px;
}

.page-disclaimer .disclaimer-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -0.015em;
  color: var(--c-ink);
}

.page-disclaimer .disclaimer-hero__title-label {
  display: block;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.42em;
  color: var(--c-ink-soft);
}

.page-disclaimer .disclaimer-hero__title-main {
  display: block;
  font-size: clamp(40px, 10.5vw, 90px);
}

.page-disclaimer .disclaimer-hero__lede {
  margin: 22px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-ink-soft);
}

.page-disclaimer .disclaimer-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin: 28px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--c-line);
}

.page-disclaimer .disclaimer-hero__meta-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-disclaimer .disclaimer-hero__meta-item .num {
  font-size: 17px;
  color: var(--c-ink);
}

.page-disclaimer .disclaimer-hero__figure {
  margin: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-disclaimer .disclaimer-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

/* --- 顶部横向章节索引条 --- */
.page-disclaimer .disclaimer-toc {
  position: sticky;
  top: var(--bar-h);
  z-index: 6;
  background: rgba(5, 7, 15, 0.94);
  backdrop-filter: blur(10px);
  border-block: 1px solid var(--c-line);
}

.page-disclaimer .disclaimer-toc__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-block: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .disclaimer-toc__inner::-webkit-scrollbar {
  height: 2px;
}

.page-disclaimer .disclaimer-toc__label {
  flex: 0 0 auto;
  color: var(--c-ink-soft);
}

.page-disclaimer .disclaimer-toc__list {
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .disclaimer-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px 7px;
  font-size: 14px;
  white-space: nowrap;
  color: var(--c-ink-soft);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-disclaimer .disclaimer-toc__link:hover,
.page-disclaimer .disclaimer-toc__link:focus-visible {
  color: var(--c-ink);
  border-bottom-color: var(--c-cyan);
  background: rgba(63, 224, 207, 0.06);
  outline: none;
}

.page-disclaimer .disclaimer-toc__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  opacity: 0.75;
}

/* --- 展签式章节 --- */
.page-disclaimer .disclaimer-body {
  padding-top: 6px;
}

.page-disclaimer .note-section {
  --indent: 0;
  display: grid;
  gap: 20px;
  padding-block: calc(42px + var(--indent) * 14px) 8px;
  scroll-margin-top: calc(var(--bar-h) + 88px);
}

.page-disclaimer .note-section:nth-of-type(2) { --indent: 1; }
.page-disclaimer .note-section:nth-of-type(3) { --indent: 2; }
.page-disclaimer .note-section:nth-of-type(4) { --indent: 3; }

.page-disclaimer .note-section__plate {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  align-self: start;
  padding: 11px 15px;
  border: 1px solid var(--plate-line);
  border-radius: 12px;
  background: var(--plate-face);
  box-shadow: inset 0 1px 0 rgba(242, 245, 250, 0.06);
  transition: border-color 220ms var(--ease), box-shadow 220ms var(--ease);
}

.page-disclaimer .note-section__plate:hover,
.page-disclaimer .note-section__plate:focus-within {
  border-color: rgba(63, 224, 207, 0.55);
  box-shadow: 0 0 0 1px rgba(63, 224, 207, 0.12), 0 10px 26px rgba(5, 7, 15, 0.62);
}

.page-disclaimer .note-section__num {
  font-family: var(--font-mono);
  font-size: 19px;
  letter-spacing: 0.08em;
  color: var(--c-ink);
}

.page-disclaimer .note-section__tag {
  padding-left: 12px;
  border-left: 1px solid var(--c-line);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--c-ink-soft);
}

.page-disclaimer .note-section__hint {
  flex: 1 1 100%;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: 12px;
  line-height: 1.6;
  color: var(--c-ink-soft);
  transition: max-height 300ms var(--ease), opacity 200ms var(--ease);
}

.page-disclaimer .note-section__plate:hover .note-section__hint,
.page-disclaimer .note-section__plate:focus-within .note-section__hint {
  max-height: 60px;
  opacity: 1;
}

.page-disclaimer .note-section__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(23px, 5.4vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}

.page-disclaimer .note-section__content .prose {
  max-width: 62ch;
}

.page-disclaimer .note-section__content .prose p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-ink-soft);
}

.page-disclaimer .note-section__aside {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 1px solid var(--rule-soft);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--c-ink-soft);
}

/* --- 重点限定词：熔岩橙细下划线 --- */
.page-disclaimer .term-bound {
  color: var(--c-ink);
  padding-bottom: 1px;
  border-bottom: 1px solid rgba(255, 106, 43, 0.6);
}

/* --- 条目列表 --- */
.page-disclaimer .note-list {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .note-list__item {
  display: grid;
  grid-template-columns: minmax(48px, auto) minmax(0, 1fr);
  gap: 4px 16px;
  padding: 14px 16px;
  border: 1px solid var(--c-line);
  border-radius: 16px;
  background: var(--c-panel-soft);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-ink-soft);
}

.page-disclaimer .note-list__key {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-ink);
}

/* --- 仪表读数条 --- */
.page-disclaimer .stat-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
}

.page-disclaimer .stat {
  padding: 16px 16px 18px;
  border: 1px solid var(--c-line);
  border-radius: 18px;
  background: var(--c-panel-soft);
}

.page-disclaimer .stat__value {
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  color: var(--c-ink);
}

.page-disclaimer .stat__unit {
  margin-left: 6px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-ink-soft);
}

.page-disclaimer .stat__label {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-ink-soft);
}

/* --- 引用对照 --- */
.page-disclaimer .cite-pair {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-disclaimer .cite-pair__col {
  padding: 18px 18px 20px;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-cyan);
  border-radius: 18px;
  background: var(--c-panel-soft);
}

.page-disclaimer .cite-pair__col--warn {
  border-left-color: var(--c-orange);
}

.page-disclaimer .cite-pair__head {
  margin: 0 0 12px;
  color: var(--c-ink);
}

.page-disclaimer .cite-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .cite-list li {
  position: relative;
  margin-bottom: 10px;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-ink-soft);
}

.page-disclaimer .cite-list li:last-child {
  margin-bottom: 0;
}

.page-disclaimer .cite-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 1px;
  background: var(--c-ink-soft);
}

/* --- 勘误处理步骤 --- */
.page-disclaimer .erratum-steps {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .erratum-steps li {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 14px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-ink-soft);
}

.page-disclaimer .erratum-steps__num {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-ink);
}

/* --- 勘误联络卡 --- */
.page-disclaimer .erratum {
  margin-top: 26px;
  padding: 22px;
  border: 1px dashed var(--plate-line);
  border-radius: 20px;
  background: linear-gradient(150deg, rgba(38, 50, 86, 0.5), rgba(5, 7, 15, 0.2));
}

.page-disclaimer .erratum__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--c-orange);
}

.page-disclaimer .erratum__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-ink-soft);
}

.page-disclaimer .erratum__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 0;
}

/* --- 页尾附注 --- */
.page-disclaimer .disclaimer-colophon {
  max-width: 68ch;
  margin: 62px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--c-line);
  font-size: 13px;
  line-height: 1.8;
  color: var(--c-ink-soft);
}

/* --- 窄屏：铭牌提示常显，列表折为单列 --- */
@media (max-width: 899px) {
  .page-disclaimer .note-section__hint {
    max-height: none;
    opacity: 1;
  }

  .page-disclaimer .note-list__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }
}

/* --- 桌面：非对称双栏，铭牌独立成列 --- */
@media (min-width: 900px) {
  .page-disclaimer .disclaimer-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 56px;
    align-items: end;
    padding-block: 40px 76px;
  }

  .page-disclaimer .disclaimer-hero__figure {
    margin-bottom: 6px;
  }

  .page-disclaimer .note-section {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 44px;
    padding-block: calc(54px + var(--indent) * 16px) 12px;
  }

  .page-disclaimer .note-section__plate {
    position: relative;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 16px 18px;
  }

  .page-disclaimer .note-section__tag {
    width: 100%;
    padding-top: 10px;
    padding-left: 0;
    border-top: 1px solid var(--c-line);
    border-left: 0;
  }

  .page-disclaimer .note-section__hint {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    left: 0;
    z-index: 3;
    flex: 0 0 auto;
    max-height: none;
    padding: 10px 12px;
    border: 1px solid var(--plate-line);
    border-radius: 10px;
    background: #0b1224;
    opacity: 0;
    visibility: hidden;
    overflow: visible;
    transform: translateY(-4px);
    transition: opacity 200ms var(--ease), transform 200ms var(--ease), visibility 200ms var(--ease);
  }

  .page-disclaimer .note-section__plate:hover .note-section__hint,
  .page-disclaimer .note-section__plate:focus-within .note-section__hint {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .page-disclaimer .stat-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

/* --- 降低动效偏好 --- */
@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .disclaimer-toc__link,
  .page-disclaimer .note-section__plate,
  .page-disclaimer .note-section__hint {
    transition: opacity 200ms var(--ease);
  }

  .page-disclaimer .note-section__hint,
  .page-disclaimer .note-section__plate:hover .note-section__hint,
  .page-disclaimer .note-section__plate:focus-within .note-section__hint {
    transform: none;
  }
}

/* --- 打印：收起索引条，全部提示可见 --- */
@media print {
  .page-disclaimer .disclaimer-toc {
    display: none;
  }

  .page-disclaimer .note-section {
    padding-block: 18px;
  }

  .page-disclaimer .note-section__hint {
    position: static;
    max-height: none;
    opacity: 1;
    visibility: visible;
    padding: 0;
    border: 0;
    background: transparent;
    transform: none;
  }
}