/* ===== 使用说明 / page-disclaimer ===== */

.page-disclaimer {
  position: relative;
  padding-bottom: 64px;
}

/* ---------- 首屏 ---------- */

.page-disclaimer .pd-hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 420px;
  padding: 28px 0 38px;
  overflow: hidden;
  border-radius: 0 0 var(--r-card) var(--r-card);
  background: var(--night);
}

.page-disclaimer .pd-hero__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  object-position: 72% 42%;
  opacity: .4;
}

.page-disclaimer .pd-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(680px 300px at 84% 8%, rgba(164, 107, 255, .22), transparent 72%),
    linear-gradient(180deg, rgba(6, 10, 28, .34) 0%, rgba(6, 10, 28, .8) 58%, var(--abyss) 100%);
}

.page-disclaimer .pd-hero__inner {
  position: relative;
  z-index: 1;
}

.page-disclaimer .pd-hero h1 {
  margin: 16px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(34px, 8vw, 60px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--text);
  text-shadow: 0 0 24px rgba(53, 232, 224, .26);
}

.page-disclaimer .pd-hero__lead {
  max-width: 620px;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--soft);
}

.page-disclaimer .pd-hero__scope {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
  opacity: .85;
}

/* ---------- 吸顶章节目录 ---------- */

.page-disclaimer .pd-toc {
  position: sticky;
  top: var(--topbar-h);
  z-index: 30;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--line);
  background: rgba(6, 10, 28, .9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.page-disclaimer .pd-toc__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 10px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-disclaimer .pd-toc__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(19, 28, 66, .5);
  color: var(--soft);
  font-size: 13px;
  line-height: 1;
  white-space: nowrap;
  text-decoration: none;
  transition: color .24s var(--ease), border-color .24s var(--ease), background .24s var(--ease);
}

.page-disclaimer .pd-toc__link:hover {
  color: var(--text);
  border-color: rgba(53, 232, 224, .5);
}

.page-disclaimer .pd-toc__link[aria-current="true"] {
  color: var(--abyss);
  font-weight: 600;
  border-color: transparent;
  background: linear-gradient(120deg, var(--cyan), #6ef0e9);
}

/* ---------- 要点卡 ---------- */

.page-disclaimer .pd-summary {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
}

.page-disclaimer .pd-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 26px 18px 20px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: linear-gradient(155deg, var(--surface) 0%, var(--night) 100%);
  text-decoration: none;
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.page-disclaimer .pd-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 10px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  clip-path: polygon(0 0, 100% 0, 100% 32%, 0 100%);
}

.page-disclaimer .pd-card:hover,
.page-disclaimer .pd-card:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(53, 232, 224, .5);
  box-shadow: 0 18px 42px -26px rgba(53, 232, 224, .6);
}

.page-disclaimer .pd-card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-disclaimer .pd-card__title {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
}

.page-disclaimer .pd-card__desc {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--soft);
}

/* ---------- 正文分区 ---------- */

.page-disclaimer .pd-body {
  margin-top: 48px;
  border-top: 1px solid var(--line);
}

.page-disclaimer .pd-block {
  padding: 38px 0 34px;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--topbar-h) + 78px);
}

.page-disclaimer .pd-block__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-bottom: 4px;
}

.page-disclaimer .pd-block__num {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--cyan);
  opacity: .3;
}

.page-disclaimer .pd-block h2 {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
}

.page-disclaimer .pd-block__lead {
  max-width: 62ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--soft);
}

.page-disclaimer .pd-list {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .pd-list li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text);
}

.page-disclaimer .pd-list li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  transform: rotate(45deg);
}

/* ---------- 风险折叠 ---------- */

.page-disclaimer .pd-risk {
  margin: 20px 0 0;
  padding: 14px 18px 16px;
  border: 1px solid rgba(255, 194, 75, .26);
  border-left: 3px solid var(--gold);
  border-radius: var(--r-sm);
  background: rgba(255, 194, 75, .045);
}

.page-disclaimer .pd-risk > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 32px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--gold);
}

.page-disclaimer .pd-risk > summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer .pd-risk > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
}

.page-disclaimer .pd-risk[open] > summary::after {
  content: "–";
}

.page-disclaimer .pd-risk__body {
  margin-top: 4px;
  padding-top: 8px;
  border-top: 1px dashed rgba(255, 194, 75, .22);
}

.page-disclaimer .pd-risk__body p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--soft);
}

/* ---------- 行内链接 ---------- */

.page-disclaimer .pd-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 232, 224, .4);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-disclaimer .pd-link:hover {
  color: #7ff2ec;
  border-bottom-color: currentColor;
}

/* ---------- 页尾版本信息 ---------- */

.page-disclaimer .pd-foot {
  display: grid;
  gap: 16px;
  margin-top: 40px;
}

.page-disclaimer .pd-foot__caps {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-disclaimer .pd-cap {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 36px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(19, 28, 66, .6);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--soft);
}

.page-disclaimer .pd-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 9px rgba(70, 227, 155, .85);
}

.page-disclaimer .pd-dot--gold {
  background: var(--gold);
  box-shadow: 0 0 9px rgba(255, 194, 75, .85);
}

.page-disclaimer .pd-foot__note {
  max-width: 68ch;
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--soft);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-disclaimer .pd-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .page-disclaimer .pd-hero {
    min-height: 500px;
    padding: 40px 0 54px;
  }

  .page-disclaimer .pd-block__head {
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 26px;
  }

  .page-disclaimer .pd-block__num {
    font-size: 46px;
  }

  .page-disclaimer .pd-block .pd-list,
  .page-disclaimer .pd-block .pd-risk {
    margin-left: 108px;
  }
}

@media (min-width: 1080px) {
  .page-disclaimer .pd-summary {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 400px) {
  .page-disclaimer .pd-hero {
    min-height: 372px;
  }

  .page-disclaimer .pd-hero__scope {
    letter-spacing: .08em;
  }

  .page-disclaimer .pd-card {
    padding: 24px 16px 18px;
  }

  .page-disclaimer .pd-risk {
    padding: 12px 14px 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .pd-card,
  .page-disclaimer .pd-toc__link,
  .page-disclaimer .pd-link {
    transition: none;
  }

  .page-disclaimer .pd-card:hover,
  .page-disclaimer .pd-card:focus-visible {
    transform: none;
  }
}