/* ===== 使用说明页 · page-disclaimer ===== */
.page-disclaimer {
  --disc-rule: rgba(232, 229, 222, .12);
  --disc-gap: clamp(34px, 5vw, 60px);
}

/* --- 面包屑 --- */
.page-disclaimer .bw-crumbs {
  margin: 0 0 4px;
}

/* --- 首屏 --- */
.page-disclaimer .disc-hero {
  padding-top: 6px;
  padding-bottom: clamp(30px, 5vw, 58px);
}

.page-disclaimer .disc-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

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

.page-disclaimer .disc-hero__text .bw-h1 {
  margin: 12px 0 16px;
  max-width: 20em;
}

.page-disclaimer .disc-hero__text .bw-lede {
  max-width: 58ch;
  margin: 0 0 22px;
}

.page-disclaimer .disc-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
}

.page-disclaimer .disc-hero__media {
  position: relative;
  margin: 0;
  min-width: 0;
}

.page-disclaimer .disc-hero__media img {
  position: relative;
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(.88) contrast(1.04);
}

.page-disclaimer .disc-hero__frame {
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(74, 127, 165, .5);
  pointer-events: none;
  z-index: 2;
}

/* --- 版本号提示 --- */
.page-disclaimer .disc-version {
  position: relative;
  display: inline-flex;
  align-items: center;
  outline-offset: 3px;
}

.page-disclaimer .disc-version__tip {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  width: min(320px, 76vw);
  padding: 12px 14px;
  background: var(--bw-asphalt);
  border: 1px solid rgba(74, 127, 165, .5);
  border-left: 3px solid var(--bw-amber);
  color: var(--bw-text);
  font-size: 13px;
  line-height: 1.65;
  letter-spacing: .01em;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity .18s var(--bw-ease), transform .18s var(--bw-ease), visibility .18s;
  z-index: 6;
}

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

/* --- 主体栅格 --- */
.page-disclaimer .disc-body {
  padding-bottom: clamp(30px, 4.5vw, 56px);
}

.page-disclaimer .disc-rail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-disclaimer .disc-rail {
  display: none;
}

.page-disclaimer .disc-rail__cap {
  margin: 0 0 14px;
  font-family: var(--bw-mono);
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--bw-text-faint);
}

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

.page-disclaimer .disc-rail__list .bw-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 0 7px 10px;
  border-left: 2px solid transparent;
  font-size: 13px;
  line-height: 1.45;
  color: var(--bw-text-dim);
  text-decoration: none;
  transition: color .18s var(--bw-ease), border-color .18s var(--bw-ease);
}

.page-disclaimer .disc-rail__list .bw-rail__num {
  font-family: var(--bw-mono);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .06em;
  color: var(--bw-text-faint);
  transition: color .18s var(--bw-ease);
}

.page-disclaimer .disc-rail__list .bw-rail__link:hover,
.page-disclaimer .disc-rail__list .bw-rail__link:focus-visible,
.page-disclaimer .disc-rail__list .bw-rail__link.is-active {
  color: var(--bw-white);
  border-left-color: var(--bw-red);
}

.page-disclaimer .disc-rail__list .bw-rail__link.is-active .bw-rail__num {
  color: var(--bw-red);
}

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

/* --- 章节 --- */
.page-disclaimer .disc-sec {
  padding-top: var(--disc-gap);
  padding-bottom: var(--disc-gap);
  border-top: 1px solid var(--disc-rule);
}

.page-disclaimer .disc-sec:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-disclaimer .disc-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-left: 16px;
  border-left: 2px solid var(--bw-red);
  margin-bottom: 22px;
}

.page-disclaimer .disc-sec__num {
  flex: none;
  font-family: var(--bw-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .1em;
  color: var(--bw-red);
}

.page-disclaimer .disc-sec__head .bw-h2 {
  margin: 0;
  font-size: clamp(20px, 3.1vw, 27px);
  line-height: 1.35;
}

/* --- 要点摘要面板 --- */
.page-disclaimer .disc-note {
  margin: 0 0 24px;
  padding: 16px 18px 18px;
  border-left: 3px solid var(--bw-amber);
}

.page-disclaimer .disc-note__label {
  margin: 0 0 8px;
  font-family: var(--bw-mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--bw-red-dark);
}

.page-disclaimer .disc-note__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  font-weight: 500;
  color: var(--bw-ink);
  max-width: 52ch;
}

/* --- 正文段落 --- */
.page-disclaimer .disc-sec .bw-body {
  max-width: 64ch;
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--bw-text-dim);
}

.page-disclaimer .disc-sec .bw-body:last-of-type {
  margin-bottom: 0;
}

/* --- 要点清单 --- */
.page-disclaimer .disc-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--disc-rule);
  max-width: 68ch;
}

.page-disclaimer .disc-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 3px;
  padding: 12px 0 12px 12px;
  border-bottom: 1px solid var(--disc-rule);
  border-left: 1px solid rgba(74, 127, 165, .32);
  font-size: 15px;
  line-height: 1.7;
  color: var(--bw-text-dim);
}

.page-disclaimer .disc-list__k {
  font-family: var(--bw-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--bw-amber);
}

/* --- 操作按钮行 --- */
.page-disclaimer .disc-actions {
  margin: 26px 0 0;
}

/* --- 反馈区 --- */
.page-disclaimer .disc-feedback {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 26px;
  margin-top: 28px;
  padding: 20px 20px;
  border-left: 3px solid var(--bw-green);
}

.page-disclaimer .disc-feedback__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
}

.page-disclaimer .disc-feedback__mail {
  font-size: 16px;
  color: var(--bw-white);
  letter-spacing: .01em;
  word-break: break-all;
}

.page-disclaimer .disc-feedback__act {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-disclaimer .bw-copy__hint {
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--bw-green-ink);
}

/* --- 页尾刻度带 --- */
.page-disclaimer .disc-outro {
  padding-top: 0;
  padding-bottom: clamp(46px, 6vw, 76px);
}

.page-disclaimer .disc-ticker {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 28px;
  padding: 26px clamp(18px, 3vw, 30px) 38px;
  background: linear-gradient(180deg, var(--bw-asphalt) 0%, var(--bw-charcoal) 100%);
  border-top: 1px solid rgba(74, 127, 165, .38);
  border-bottom: 1px solid rgba(74, 127, 165, .38);
  border-left: 3px solid var(--bw-red);
}

.page-disclaimer .disc-ticker::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 14px;
  height: 7px;
  background-image: repeating-linear-gradient(90deg, rgba(74, 127, 165, .55) 0 1px, transparent 1px 16px);
  pointer-events: none;
}

.page-disclaimer .disc-ticker__text {
  flex: 1 1 260px;
  margin: 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--bw-text-dim);
}

.page-disclaimer .disc-ticker__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* --- 响应式 --- */
@media (min-width: 720px) {
  .page-disclaimer .disc-list li {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
    padding-left: 16px;
  }

  .page-disclaimer .disc-feedback {
    flex-wrap: nowrap;
    justify-content: space-between;
    padding: 22px 26px;
  }
}

@media (min-width: 1024px) {
  .page-disclaimer .disc-hero {
    padding-bottom: clamp(40px, 4.6vw, 68px);
  }

  .page-disclaimer .disc-hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: clamp(36px, 4.4vw, 68px);
    align-items: center;
  }

  .page-disclaimer .disc-hero__media img {
    aspect-ratio: 4 / 3;
  }

  .page-disclaimer .disc-rail-layout {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-disclaimer .disc-rail {
    display: block;
    position: sticky;
    top: 124px;
    align-self: start;
    padding-top: 4px;
  }

  .page-disclaimer .disc-sec__head {
    margin-bottom: 26px;
  }
}

@media (min-width: 1280px) {
  .page-disclaimer .disc-sections {
    padding-right: clamp(0px, 3vw, 40px);
  }
}