/* =========================================================
   使用说明 / usage —— 页面作用域 page-disclaimer
   ========================================================= */

.page-disclaimer {
  --pd-pad: clamp(16px, 4vw, 40px);
  --pd-rule: rgba(59, 232, 198, 0.22);
  --pd-rule-soft: rgba(42, 74, 66, 0.55);
  --pd-glow: rgba(30, 156, 134, 0.22);
  position: relative;
  padding-bottom: clamp(64px, 10vw, 140px);
  background-color: transparent;
  background-image:
    radial-gradient(90% 46% at 84% -6%, var(--pd-glow) 0%, rgba(10, 21, 18, 0) 68%),
    radial-gradient(70% 38% at 4% 2%, rgba(59, 232, 198, 0.08) 0%, rgba(10, 21, 18, 0) 70%);
  background-repeat: no-repeat;
}

.page-disclaimer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: min(640px, 72vh);
  background-image:
    linear-gradient(to right, rgba(42, 74, 66, 0.34) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 74, 66, 0.34) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.6), transparent 84%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.6), transparent 84%);
  pointer-events: none;
  z-index: 0;
}

.page-disclaimer .pd-wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pd-pad);
}

/* ---------- 面包屑 ---------- */
.page-disclaimer .bs-crumb {
  padding-top: clamp(96px, 12vw, 132px);
  margin-bottom: clamp(14px, 2.2vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .pd-hero__eyebrow {
  margin: 0 0 clamp(12px, 1.8vw, 20px);
}

.page-disclaimer .pd-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 30px);
}

.page-disclaimer .pd-hero__title {
  margin: 0;
  font-family: var(--font-narrow);
  font-weight: 900;
  font-size: clamp(2.25rem, 7.5vw, 4.5rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-disclaimer .pd-hero__lead {
  margin: 0;
  max-width: 38em;
}

/* ---------- 首屏纹理图 ---------- */
.page-disclaimer .pd-figure {
  position: relative;
  margin: clamp(30px, 4.6vw, 56px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
  overflow: hidden;
}

.page-disclaimer .pd-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 5;
  object-fit: cover;
}

/* ---------- 刻度线 ---------- */
.page-disclaimer .pd-scale {
  height: 16px;
  margin-top: clamp(26px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
  background-image: repeating-linear-gradient(
    to right,
    var(--line-soft) 0 1px,
    transparent 1px 24px
  );
}

/* ---------- 条目索引条 ---------- */
.page-disclaimer .pd-jump {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.6vw, 36px);
  padding: clamp(12px, 1.8vw, 18px) 0;
  border-bottom: 1px solid var(--line-soft);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.page-disclaimer .pd-jump::-webkit-scrollbar {
  display: none;
}

.page-disclaimer .pd-jump__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  flex: 0 0 auto;
  padding-bottom: 3px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 1px solid transparent;
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-disclaimer .pd-jump__i {
  color: var(--orange);
  font-size: var(--fs-12);
}

.page-disclaimer .pd-jump__link:hover,
.page-disclaimer .pd-jump__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 章节 ---------- */
.page-disclaimer .pd-part {
  padding-top: clamp(46px, 7vw, 84px);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-disclaimer .pd-part__head {
  display: flex;
  align-items: baseline;
  gap: clamp(12px, 2vw, 22px);
  padding-bottom: clamp(12px, 1.8vw, 18px);
  border-bottom: 1px solid var(--pd-rule);
}

.page-disclaimer .pd-part__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-disclaimer .pd-part__title {
  margin: 0;
  font-family: var(--font-narrow);
  font-weight: 900;
  font-size: clamp(1.4rem, 4.6vw, 2.25rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--text);
}

/* ---------- 编号条目 ---------- */
.page-disclaimer .pd-list {
  counter-reset: pd-item;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .pd-item {
  counter-increment: pd-item;
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: clamp(8px, 1.6vw, 24px);
  padding: clamp(15px, 2.2vw, 22px) 0;
  border-bottom: 1px solid var(--pd-rule-soft);
  transition: border-color 0.24s var(--ease);
}

.page-disclaimer .pd-item:hover {
  border-bottom-color: var(--pd-rule);
}

.page-disclaimer .pd-item__n {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  line-height: 1.85;
  color: var(--muted);
}

.page-disclaimer .pd-item__n::before {
  content: counter(pd-item, decimal-leading-zero);
}

.page-disclaimer .pd-item__body {
  min-width: 0;
}

.page-disclaimer .pd-item__text {
  margin: 0;
  max-width: 38em;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--text);
}

.page-disclaimer .pd-item__text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 232, 198, 0.45);
  transition: border-color 0.24s var(--ease);
}

.page-disclaimer .pd-item__text a:hover,
.page-disclaimer .pd-item__text a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 代码块样式示例 ---------- */
.page-disclaimer .pd-snippet {
  margin: clamp(14px, 2.2vw, 22px) 0 0;
  padding: clamp(14px, 2vw, 20px) clamp(15px, 2.2vw, 24px);
  max-width: 38em;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  border-radius: var(--radius);
  background: var(--ink-2);
}

.page-disclaimer .pd-snippet__cap {
  margin-bottom: clamp(8px, 1.4vw, 12px);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-disclaimer .pd-snippet pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  line-height: 1.9;
  color: var(--cyan);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 760px) {
  .page-disclaimer .pd-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: end;
    column-gap: clamp(32px, 5vw, 76px);
    row-gap: clamp(16px, 2vw, 24px);
  }

  .page-disclaimer .pd-hero__lead {
    padding-bottom: 0.4em;
  }

  .page-disclaimer .pd-item {
    grid-template-columns: 3.6rem minmax(0, 1fr);
    gap: clamp(14px, 2.4vw, 34px);
    padding: clamp(17px, 2vw, 24px) 0;
  }
}

/* ---------- 宽屏 ---------- */
@media (min-width: 1080px) {
  .page-disclaimer .pd-part {
    padding-top: clamp(64px, 7vw, 96px);
  }

  .page-disclaimer .pd-item {
    padding: clamp(18px, 1.8vw, 26px) 0;
  }

  .page-disclaimer .pd-item__n {
    font-size: var(--fs-14);
    letter-spacing: 0.12em;
  }
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 480px) {
  .page-disclaimer .pd-hero__title {
    font-size: clamp(2rem, 11vw, 2.75rem);
  }

  .page-disclaimer .pd-item {
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 8px;
    padding: 14px 0;
  }

  .page-disclaimer .pd-item__text {
    font-size: var(--fs-16);
    line-height: 1.78;
  }

  .page-disclaimer .pd-jump {
    gap: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .pd-item,
  .page-disclaimer .pd-jump__link,
  .page-disclaimer .pd-item__text a {
    transition: none;
  }
}