/* ============================================================
   使用指引 · 页面专属样式（作用域：.page-disclaimer）
   ============================================================ */

.page-disclaimer {
  --ud-body-text: #C6D0E0;
  --ud-gap: 14px;
  --ud-num-col: 116px;

  background: var(--yf-void);
  color: var(--yf-ink);
  font-family: var(--yf-font-body);
  -webkit-font-smoothing: antialiased;
}

/* ---------- 面包屑 ---------- */

.page-disclaimer .ud-crumb-sep {
  color: var(--yf-muted);
  opacity: 0.55;
}

/* ---------- 首屏 ---------- */

.page-disclaimer .ud-hero {
  position: relative;
  padding: 56px 0 0;
  isolation: isolate;
  background:
    radial-gradient(72% 58% at 86% 2%, rgba(54, 191, 166, 0.13), transparent 62%),
    radial-gradient(62% 52% at 4% 0%, rgba(232, 184, 92, 0.09), transparent 58%),
    var(--yf-void);
}

.page-disclaimer .ud-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(38, 50, 74, 0.5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(38, 50, 74, 0.5) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.92), transparent 76%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.92), transparent 76%);
  pointer-events: none;
}

.page-disclaimer .ud-hero__head {
  margin-top: 28px;
}

.page-disclaimer .ud-hero__eyebrow {
  margin: 0 0 18px;
  font-family: var(--yf-font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--yf-gold);
}

.page-disclaimer .ud-hero__title {
  margin: 0;
  max-width: 900px;
  font-family: var(--yf-font-head);
  font-weight: 900;
  font-size: clamp(32px, 8vw, 56px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--yf-ink);
}

.page-disclaimer .ud-hero__title::after {
  content: "";
  display: block;
  width: 88px;
  height: 2px;
  margin-top: 26px;
  background: linear-gradient(90deg, var(--yf-gold), var(--yf-jade));
}

.page-disclaimer .ud-hero__lead {
  margin: 22px 0 0;
  max-width: 640px;
  font-size: 17px;
  line-height: 1.85;
  color: var(--yf-ink);
  opacity: 0.86;
}

.page-disclaimer .ud-hero__facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin: 36px 0 0;
  padding: 0;
  border-top: 1px solid var(--yf-line);
  border-bottom: 1px solid var(--yf-line);
}

.page-disclaimer .ud-hero__facts > div {
  padding: 16px 0;
  min-width: 0;
}

.page-disclaimer .ud-hero__facts > div + div {
  border-top: 1px solid var(--yf-line);
}

.page-disclaimer .ud-hero__facts dt {
  margin: 0 0 8px;
  font-family: var(--yf-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--yf-muted);
}

.page-disclaimer .ud-hero__facts dd {
  margin: 0;
  font-family: var(--yf-font-head);
  font-weight: 800;
  font-size: clamp(18px, 5vw, 22px);
  letter-spacing: -0.01em;
  color: var(--yf-ink);
}

/* ---------- 通栏图 ---------- */

.page-disclaimer .ud-banner {
  padding: 40px 0 0;
}

.page-disclaimer .ud-banner__frame {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--yf-line);
  background: var(--yf-panel);
}

.page-disclaimer .ud-banner__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(115deg, rgba(54, 191, 166, 0.18), transparent 44%),
    linear-gradient(295deg, rgba(232, 184, 92, 0.14), transparent 48%);
}

.page-disclaimer .ud-banner__frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-disclaimer .ud-banner__cap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--yf-muted);
}

.page-disclaimer .ud-banner__capno {
  font-family: var(--yf-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--yf-gold);
}

/* ---------- 章节索引条 ---------- */

.page-disclaimer .ud-rail {
  position: sticky;
  top: var(--yf-header-h);
  z-index: 40;
  margin-top: 48px;
  background: rgba(7, 11, 20, 0.92);
  border-top: 1px solid var(--yf-line);
  border-bottom: 1px solid var(--yf-line);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.page-disclaimer .ud-rail__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.page-disclaimer .ud-rail__inner::-webkit-scrollbar {
  display: none;
}

.page-disclaimer .ud-rail__label {
  flex: 0 0 auto;
  padding-right: 16px;
  border-right: 1px solid var(--yf-line);
  font-family: var(--yf-font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--yf-muted);
}

.page-disclaimer .ud-rail__list {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .ud-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid transparent;
  font-size: 14px;
  color: var(--yf-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s var(--yf-ease), border-color 0.18s var(--yf-ease), background-color 0.18s var(--yf-ease);
}

.page-disclaimer .ud-rail__link:hover,
.page-disclaimer .ud-rail__link:focus-visible {
  color: var(--yf-gold-hi);
  border-color: var(--yf-line);
  background: var(--yf-float);
}

.page-disclaimer .ud-rail__no {
  font-family: var(--yf-font-mono);
  font-size: 12px;
  color: var(--yf-gold);
}

/* ---------- 正文区 ---------- */

.page-disclaimer .ud-body {
  padding: 0 0 56px;
  background: var(--yf-void);
}

.page-disclaimer .ud-chapter {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ud-gap);
  padding: 44px 0;
  border-bottom: 1px solid var(--yf-line);
  scroll-margin-top: calc(var(--yf-header-h) + 78px);
  transition: opacity 0.24s var(--yf-ease), transform 0.24s var(--yf-ease);
}

.page-disclaimer .ud-chapter__num {
  font-family: var(--yf-font-mono);
  font-weight: 500;
  font-size: 30px;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--yf-gold);
  user-select: none;
  transition: color 0.24s var(--yf-ease), -webkit-text-stroke-color 0.24s var(--yf-ease);
}

.page-disclaimer .ud-chapter__title {
  position: relative;
  margin: 0 0 14px;
  font-family: var(--yf-font-head);
  font-weight: 800;
  font-size: clamp(22px, 6vw, 28px);
  line-height: 1.26;
  letter-spacing: -0.02em;
  color: var(--yf-ink);
}

.page-disclaimer .ud-chapter__title::after {
  content: "";
  display: block;
  width: 64px;
  height: 2px;
  margin-top: 16px;
  background: linear-gradient(90deg, var(--yf-gold), var(--yf-jade));
  transform: scaleX(0.32);
  transform-origin: left center;
  transition: transform 0.32s var(--yf-ease);
}

.page-disclaimer .ud-chapter__lead {
  margin: 0 0 20px;
  max-width: 660px;
  padding-left: 16px;
  border-left: 2px solid var(--yf-gold);
  font-size: 16px;
  line-height: 1.8;
  color: var(--yf-ink);
}

.page-disclaimer .ud-p {
  margin: 0 0 16px;
  max-width: var(--yf-prose);
  font-size: 15px;
  line-height: 1.85;
  color: var(--ud-body-text);
}

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

.page-disclaimer .ud-note {
  margin: 20px 0 0;
  max-width: var(--yf-prose);
  padding: 12px 16px;
  border-left: 2px solid var(--yf-line);
  background: var(--yf-float);
  font-size: 14px;
  line-height: 1.75;
  color: var(--yf-muted);
}

.page-disclaimer .ud-points {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  max-width: var(--yf-prose);
}

.page-disclaimer .ud-points li {
  position: relative;
  padding: 14px 0 14px 26px;
  border-top: 1px solid var(--yf-line);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ud-body-text);
}

.page-disclaimer .ud-points li:last-child {
  border-bottom: 1px solid var(--yf-line);
}

.page-disclaimer .ud-points li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 24px;
  width: 6px;
  height: 6px;
  background: var(--yf-jade);
  transform: rotate(45deg);
}

.page-disclaimer .ud-points strong {
  font-family: var(--yf-font-head);
  font-weight: 700;
  color: var(--yf-ink);
}

.page-disclaimer .ud-points a,
.page-disclaimer .ud-note a {
  color: var(--yf-jade);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(54, 191, 166, 0.42);
  transition: color 0.18s var(--yf-ease), text-decoration-color 0.18s var(--yf-ease);
}

.page-disclaimer .ud-points a:hover,
.page-disclaimer .ud-note a:hover,
.page-disclaimer .ud-points a:focus-visible,
.page-disclaimer .ud-note a:focus-visible {
  color: var(--yf-jade-hi);
  text-decoration-color: var(--yf-jade-hi);
}

/* ---------- 收尾 ---------- */

.page-disclaimer .ud-outro {
  position: relative;
  padding: 64px 0 72px;
  background: var(--yf-panel);
  border-top: 1px solid var(--yf-line);
  isolation: isolate;
  overflow: hidden;
}

.page-disclaimer .ud-outro::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(38, 50, 74, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(38, 50, 74, 0.55) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse 74% 68% at 50% 42%, #000 8%, transparent 78%);
  mask-image: radial-gradient(ellipse 74% 68% at 50% 42%, #000 8%, transparent 78%);
  pointer-events: none;
}

.page-disclaimer .ud-outro::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 20%;
  z-index: -1;
  width: min(560px, 88vw);
  height: min(560px, 88vw);
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(232, 184, 92, 0.13), rgba(54, 191, 166, 0.06) 46%, transparent 72%);
  pointer-events: none;
}

.page-disclaimer .ud-outro__inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.page-disclaimer .ud-outro__eyebrow {
  margin: 0 0 18px;
  font-family: var(--yf-font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--yf-gold);
}

.page-disclaimer .ud-outro__text {
  margin: 0;
  font-family: var(--yf-font-head);
  font-weight: 500;
  font-size: clamp(17px, 4.4vw, 20px);
  line-height: 1.85;
  color: var(--yf-ink);
}

.page-disclaimer .ud-outro__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 32px;
}

/* ---------- 断点：平板及桌面 ---------- */

@media (min-width: 860px) {
  .page-disclaimer {
    --ud-gap: 40px;
  }

  .page-disclaimer .ud-hero {
    padding-top: 88px;
  }

  .page-disclaimer .ud-hero__head {
    margin-top: 40px;
  }

  .page-disclaimer .ud-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 48px;
  }

  .page-disclaimer .ud-hero__facts > div {
    padding: 22px 28px 26px;
    border-left: 1px solid var(--yf-line);
  }

  .page-disclaimer .ud-hero__facts > div:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .page-disclaimer .ud-hero__facts > div + div {
    border-top: 0;
  }

  .page-disclaimer .ud-banner {
    padding-top: 64px;
  }

  .page-disclaimer .ud-banner__frame {
    aspect-ratio: 16 / 5;
  }

  .page-disclaimer .ud-rail {
    margin-top: 72px;
  }

  .page-disclaimer .ud-rail__inner {
    gap: 20px;
    padding: 10px 0;
  }

  .page-disclaimer .ud-body {
    padding-bottom: 96px;
  }

  .page-disclaimer .ud-chapter {
    grid-template-columns: var(--ud-num-col) minmax(0, 1fr);
    gap: var(--ud-gap);
    padding: 64px 0;
    scroll-margin-top: calc(var(--yf-header-h) + 100px);
  }

  .page-disclaimer .ud-chapter:first-of-type {
    padding-top: 88px;
  }

  .page-disclaimer .ud-chapter__num {
    position: sticky;
    top: calc(var(--yf-header-h) + 118px);
    font-size: 60px;
  }

  .page-disclaimer .ud-chapter__title {
    font-size: clamp(26px, 3vw, 38px);
  }

  .page-disclaimer .ud-chapter__lead {
    font-size: 17px;
    margin-bottom: 22px;
  }

  .page-disclaimer .ud-p {
    font-size: 16px;
  }

  .page-disclaimer .ud-points li {
    font-size: 15.5px;
  }

  .page-disclaimer .ud-outro {
    padding: 96px 0 104px;
  }

  .page-disclaimer .ud-outro__actions {
    margin-top: 36px;
    gap: 16px;
  }
}

@media (min-width: 1040px) {
  .page-disclaimer .ud-chapter__num {
    color: rgba(232, 184, 92, 0.16);
    -webkit-text-stroke: 1px rgba(232, 184, 92, 0.5);
  }

  .page-disclaimer .ud-chapter__num:hover,
  .page-disclaimer .ud-chapter__num:focus-visible {
    color: rgba(232, 184, 92, 0.88);
    -webkit-text-stroke-color: var(--yf-gold-hi);
  }

  .page-disclaimer .ud-chapter:has(.ud-chapter__num:hover) .ud-chapter__title::after {
    transform: scaleX(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .ud-chapter__num,
  .page-disclaimer .ud-chapter__title::after,
  .page-disclaimer .ud-rail__link,
  .page-disclaimer .ud-points a {
    transition: none;
  }
}