/* ===== 使用说明页 · page-disclaimer ===== */
.page-disclaimer {
  position: relative;
  padding-bottom: clamp(56px, 9vw, 128px);
  background-color: var(--bs-deep);
  background-image:
    linear-gradient(to right, var(--bs-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--bs-grid-line) 1px, transparent 1px);
  background-size: 96px 96px;
  color: var(--bs-cream);
  font-family: var(--bs-body);
}

/* ---- 首屏 ---- */
.page-disclaimer .disc-head {
  padding-top: clamp(20px, 3.6vw, 40px);
}

.page-disclaimer .disc-head__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 40px);
  padding-top: clamp(22px, 4vw, 40px);
  border-top: 1px solid var(--bs-hair);
}

.page-disclaimer .disc-head__main {
  min-width: 0;
}

.page-disclaimer .disc-head__lead {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.9;
  color: rgba(237, 231, 218, .82);
}

.page-disclaimer .disc-head__side {
  position: relative;
  min-width: 0;
  padding: 22px 20px 20px;
  border: 1px solid var(--bs-hair);
  background: linear-gradient(180deg, var(--bs-deep-2), rgba(16, 49, 42, .5));
}

.page-disclaimer .disc-head__side::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 52px;
  height: 3px;
  background: var(--bs-cyan);
}

.page-disclaimer .disc-meta {
  margin: 0;
  display: grid;
  gap: 11px;
}

.page-disclaimer .disc-meta__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--bs-hair-soft);
}

.page-disclaimer .disc-meta__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-disclaimer .disc-meta__k {
  margin: 0;
  flex: 0 0 auto;
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--bs-rock);
}

.page-disclaimer .disc-meta__v {
  margin: 0;
  min-width: 0;
  font-family: var(--bs-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  line-height: 1.5;
  color: var(--bs-cream);
  text-align: right;
  overflow-wrap: anywhere;
}

.page-disclaimer .disc-meta__v--mail {
  color: var(--bs-cyan);
  font-size: 12px;
}

/* ---- 章节骨架 ---- */
.page-disclaimer .disc-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  margin-top: clamp(34px, 6vw, 72px);
}

.page-disclaimer .disc-doc {
  min-width: 0;
}

/* ---- 目录 ---- */
.page-disclaimer .disc-toc {
  min-width: 0;
  padding: 2px 0 2px 16px;
  border-left: 2px solid var(--bs-cyan);
}

.page-disclaimer .disc-toc__title {
  margin: 0 0 12px;
  font-family: var(--bs-mono);
  font-size: 11px;
  letter-spacing: .28em;
  color: var(--bs-rock);
}

.page-disclaimer .disc-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 9px;
}

.page-disclaimer .disc-toc__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  font-size: 13.5px;
  line-height: 1.5;
  color: rgba(237, 231, 218, .72);
  text-decoration: none;
  transition: color var(--bs-fast) var(--bs-ease);
}

.page-disclaimer .disc-toc__link:hover,
.page-disclaimer .disc-toc__link:focus-visible {
  color: var(--bs-cyan);
}

.page-disclaimer .disc-toc__num {
  flex: 0 0 auto;
  font-family: var(--bs-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--bs-cyan-deep);
}

/* ---- 章节条目 ---- */
.page-disclaimer .disc-sec {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: clamp(26px, 4vw, 44px) 0;
  border-top: 1px solid var(--bs-hair-soft);
  scroll-margin-top: 132px;
}

.page-disclaimer .disc-sec:first-child {
  border-top-color: var(--bs-hair);
}

.page-disclaimer .disc-sec__idx {
  padding-top: 5px;
  font-family: var(--bs-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--bs-rock);
}

.page-disclaimer .disc-sec__idx::after {
  content: "";
  display: block;
  width: 13px;
  height: 3px;
  margin-top: 9px;
  background: var(--bs-cyan);
}

.page-disclaimer .disc-sec:nth-of-type(3) .disc-sec__idx::after { background: var(--bs-alert); }
.page-disclaimer .disc-sec:nth-of-type(4) .disc-sec__idx::after { background: var(--bs-clay); }
.page-disclaimer .disc-sec:nth-of-type(5) .disc-sec__idx::after { background: var(--bs-rock); }

.page-disclaimer .disc-sec__body {
  min-width: 0;
}

.page-disclaimer .disc-sec__title {
  margin: 0 0 14px;
  font-family: var(--bs-head);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 25px);
  line-height: 1.34;
  letter-spacing: -.01em;
  color: var(--bs-cream);
}

.page-disclaimer .disc-sec__body p {
  margin: 0 0 14px;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.88;
  color: rgba(237, 231, 218, .8);
}

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

.page-disclaimer .disc-sec__body a {
  color: var(--bs-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 200, .42);
  transition: color var(--bs-fast) var(--bs-ease), border-color var(--bs-fast) var(--bs-ease);
}

.page-disclaimer .disc-sec__body a:hover,
.page-disclaimer .disc-sec__body a:focus-visible {
  color: var(--bs-cream);
  border-bottom-color: var(--bs-cyan);
}

.page-disclaimer .disc-mono {
  font-family: var(--bs-mono);
  font-size: .94em;
  color: var(--bs-cyan);
  overflow-wrap: anywhere;
}

/* ---- 关键数字条 ---- */
.page-disclaimer .disc-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: 1px;
  margin: 0 0 18px;
  background: var(--bs-hair-soft);
  border: 1px solid var(--bs-hair-soft);
}

.page-disclaimer .disc-stats__cell {
  padding: 14px 16px 15px;
  background: var(--bs-deep);
}

.page-disclaimer .disc-stats__num {
  display: block;
  font-family: var(--bs-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--bs-cyan);
}

.page-disclaimer .disc-stats__num em {
  font-style: normal;
  font-size: .45em;
  letter-spacing: .04em;
  margin-left: 3px;
  color: var(--bs-rock);
}

.page-disclaimer .disc-stats__label {
  display: block;
  margin-top: 9px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--bs-rock);
}

/* ---- 30 天窗口示意 ---- */
.page-disclaimer .disc-window {
  display: block;
  width: 100%;
  height: auto;
  margin: 4px 0 18px;
  padding: 10px 12px;
  border: 1px solid var(--bs-hair-soft);
  background: rgba(6, 18, 16, .55);
  box-sizing: border-box;
}

/* ---- 三类差异 ---- */
.page-disclaimer .disc-diff {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0 0 20px;
  background: var(--bs-hair-soft);
  border: 1px solid var(--bs-hair-soft);
}

.page-disclaimer .disc-diff__card {
  --disc-tone: var(--bs-cyan);
  padding: 18px 18px 20px;
  background: var(--bs-deep);
  border-top: 3px solid var(--disc-tone);
}

.page-disclaimer .disc-diff__card--b { --disc-tone: var(--bs-alert); }
.page-disclaimer .disc-diff__card--c { --disc-tone: var(--bs-clay); }

.page-disclaimer .disc-diff__name {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 10px;
  font-family: var(--bs-head);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: .02em;
  color: var(--bs-cream);
}

.page-disclaimer .disc-diff__chip {
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
  background: var(--disc-tone);
}

.page-disclaimer .disc-diff__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(237, 231, 218, .78);
}

.page-disclaimer .disc-figure {
  margin: 0 0 20px;
}

/* ---- 醒目提示 ---- */
.page-disclaimer .disc-note {
  margin: 0;
  padding: 14px 16px;
  border-left: 3px solid var(--bs-alert);
  background: rgba(255, 90, 52, .07);
  font-size: 14px;
  line-height: 1.82;
  color: rgba(237, 231, 218, .86);
}

/* ---- 引用步骤 ---- */
.page-disclaimer .disc-steps {
  list-style: none;
  counter-reset: discstep;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0 0 18px;
  padding: 0;
  background: var(--bs-hair-soft);
  border: 1px solid var(--bs-hair-soft);
}

.page-disclaimer .disc-steps__item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 12px;
  counter-increment: discstep;
  padding: 15px 18px;
  background: var(--bs-deep);
  font-size: 14.5px;
  line-height: 1.82;
  color: rgba(237, 231, 218, .82);
}

.page-disclaimer .disc-steps__item::before {
  content: counter(discstep, decimal-leading-zero);
  font-family: var(--bs-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--bs-cyan);
  padding-top: 2px;
}

/* ---- 术语悬停释义 ---- */
.page-disclaimer .disc-term {
  position: relative;
  color: var(--bs-cream);
  border-bottom: 1px dashed var(--bs-cyan-deep);
  cursor: help;
  outline: none;
}

.page-disclaimer .disc-term:focus-visible {
  border-bottom-color: var(--bs-cyan);
  box-shadow: 0 0 0 1px rgba(53, 224, 200, .5);
}

.page-disclaimer .disc-term__tip {
  position: absolute;
  left: 0;
  bottom: 100%;
  z-index: 6;
  width: max-content;
  max-width: min(260px, 74vw);
  margin-bottom: 9px;
  padding: 9px 11px;
  background: var(--bs-char);
  border: 1px solid var(--bs-cyan-deep);
  color: var(--bs-cream);
  font-size: 12px;
  line-height: 1.65;
  letter-spacing: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity var(--bs-fast) var(--bs-ease),
              transform var(--bs-fast) var(--bs-ease),
              visibility var(--bs-fast) linear;
}

.page-disclaimer .disc-term:hover .disc-term__tip,
.page-disclaimer .disc-term:focus .disc-term__tip,
.page-disclaimer .disc-term:focus-within .disc-term__tip {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ---- 窄屏 ---- */
@media (max-width: 599px) {
  .page-disclaimer .disc-toc__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 14px;
  }

  .page-disclaimer .disc-sec {
    grid-template-columns: 26px minmax(0, 1fr);
    gap: 10px;
  }

  .page-disclaimer .disc-sec__idx {
    font-size: 12px;
  }

  .page-disclaimer .disc-steps__item {
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 8px;
    padding: 14px 14px;
  }

  .page-disclaimer .disc-window {
    padding: 6px 8px;
  }
}

/* ---- 中屏及以上 ---- */
@media (min-width: 760px) {
  .page-disclaimer .disc-diff {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---- 桌面栅格 ---- */
@media (min-width: 1024px) {
  .page-disclaimer .disc-head__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(36px, 5vw, 76px);
    align-items: start;
  }

  .page-disclaimer .disc-body {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 80px);
    align-items: start;
  }

  .page-disclaimer .disc-toc {
    position: sticky;
    top: 128px;
  }

  .page-disclaimer .disc-sec {
    grid-template-columns: 68px minmax(0, 1fr);
    gap: 22px;
  }

  .page-disclaimer .disc-sec__idx {
    padding-top: 8px;
    font-size: 15px;
  }

  .page-disclaimer .disc-sec__idx::after {
    width: 18px;
    margin-top: 11px;
  }
}

/* ---- 动效收敛 ---- */
@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .disc-term__tip,
  .page-disclaimer .disc-toc__link,
  .page-disclaimer .disc-sec__body a {
    transition: none;
  }
}