/* ============================================================
   page-disclaimer · 用户协议
   窄栏条款页：左侧编号轨道 + 右侧正文，1px 荧光青细线框定阅读区间
   ============================================================ */

.page-disclaimer {
  --rail-col: 104px;
  --rail-gap: 40px;
  --clause-indent: 46px;
}

/* ---------- 面包屑 ---------- */
.page-disclaimer .breadcrumb {
  margin-bottom: 26px;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .clause-hero {
  display: grid;
  gap: 16px;
  max-width: 880px;
  padding-bottom: 34px;
}

.page-disclaimer .clause-hero__title {
  margin: 0;
  line-height: 1.15;
}

.page-disclaimer .clause-hero__lede {
  margin: 0;
  max-width: 660px;
}

.page-disclaimer .clause-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}

.page-disclaimer .clause-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--grid);
  border-radius: var(--pill);
  background: var(--panel);
}

.page-disclaimer .clause-hero__k {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-disclaimer .clause-hero__v {
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
}

/* ---------- 首屏通栏图 ---------- */
.page-disclaimer .clause-banner {
  margin: 0 0 42px;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--grid);
}

.page-disclaimer .clause-banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 阅读区间：上下各一条 1px 荧光青细线 ---------- */
.page-disclaimer .clause-frame {
  border-top: 1px solid var(--cyan);
  border-bottom: 1px solid var(--cyan);
  padding: 26px 0 34px;
}

.page-disclaimer .clause-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

/* ---------- 编号轨道 ---------- */
.page-disclaimer .clause-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mist);
}

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

.page-disclaimer .clause-rail__list::-webkit-scrollbar {
  display: none;
}

.page-disclaimer .clause-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--grid);
  border-radius: var(--pill);
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}

.page-disclaimer .clause-rail__num {
  font-family: var(--font-mono);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-disclaimer .clause-rail__label {
  font-size: 13px;
  letter-spacing: .02em;
}

.page-disclaimer .clause-rail__link:hover,
.page-disclaimer .clause-rail__link:focus-visible {
  color: var(--paper);
  border-color: var(--cyan);
  background-color: var(--wash);
}

/* ---------- 条款条目 ---------- */
.page-disclaimer .clause {
  border-bottom: 1px solid var(--grid);
  scroll-margin-top: 96px;
}

.page-disclaimer .clause:last-of-type {
  border-bottom: 0;
}

.page-disclaimer .clause__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 22px 0 16px;
  cursor: pointer;
  list-style: none;
}

.page-disclaimer .clause__head::-webkit-details-marker {
  display: none;
}

.page-disclaimer .clause__head::marker {
  content: "";
}

.page-disclaimer .clause__num {
  flex: none;
  width: 34px;
  font-family: var(--font-mono);
  font-size: 17px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
  color: var(--cyan);
  line-height: 1.4;
}

.page-disclaimer .clause__title {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.4;
  color: var(--paper);
}

.page-disclaimer .clause__toggle {
  position: relative;
  flex: none;
  margin-left: auto;
  align-self: center;
  width: 20px;
  height: 20px;
}

.page-disclaimer .clause__toggle::before,
.page-disclaimer .clause__toggle::after {
  content: "";
  position: absolute;
  background: var(--cyan-soft);
  transition: transform var(--dur) var(--ease),
              opacity var(--dur) var(--ease);
}

.page-disclaimer .clause__toggle::before {
  left: 50%;
  top: 3px;
  bottom: 3px;
  width: 1.5px;
  transform: translateX(-50%);
}

.page-disclaimer .clause__toggle::after {
  top: 50%;
  left: 3px;
  right: 3px;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-disclaimer .clause[open] .clause__toggle::before {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-disclaimer .clause__body {
  padding: 0 0 26px;
}

.page-disclaimer .clause__body > p {
  margin: 0 0 1.2em;
  text-indent: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 条款编号列表 ---------- */
.page-disclaimer .clause__list {
  list-style: none;
  margin: 0 0 1.2em;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-disclaimer .clause__list:last-of-type {
  margin-bottom: 0;
}

.page-disclaimer .clause__list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-disclaimer .clause__key {
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-disclaimer .clause__list a {
  color: var(--cyan-soft);
  text-decoration: underline;
  text-decoration-color: var(--grid);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--dur) var(--ease),
              color var(--dur) var(--ease);
}

.page-disclaimer .clause__list a:hover,
.page-disclaimer .clause__list a:focus-visible {
  color: var(--cyan);
  text-decoration-color: var(--cyan);
}

/* ---------- 关键约定：浅青细描边方框 ---------- */
.page-disclaimer .clause-callout {
  margin: 22px 0 20px;
  padding: 16px 18px;
  border: 1px solid var(--cyan-soft);
  border-radius: var(--r-md);
  background-color: var(--wash);
}

.page-disclaimer .clause-callout__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan-soft);
}

.page-disclaimer .clause-callout p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--paper);
}

/* ---------- 复制条款链接 ---------- */
.page-disclaimer .clause-copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 4px;
  padding: 7px 16px;
  border: 1px solid var(--grid);
  border-radius: var(--pill);
  background-color: transparent;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  cursor: pointer;
  transition: color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}

.page-disclaimer .clause-copy:hover,
.page-disclaimer .clause-copy:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background-color: var(--wash);
}

.page-disclaimer .clause-copy.is-copied {
  color: var(--cyan);
  border-color: var(--cyan);
  background-color: var(--wash-2);
}

/* ---------- 修订说明 ---------- */
.page-disclaimer .clause-note {
  margin: 20px 0 0;
  padding-left: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.75;
  letter-spacing: .02em;
  color: var(--mist);
}

/* ---------- 页尾出口 ---------- */
.page-disclaimer .clause-outro {
  margin-top: 44px;
  padding: 26px 22px;
  border: 1px solid var(--grid);
  border-radius: var(--r-xl);
  background-color: var(--panel);
}

.page-disclaimer .clause-outro h2 {
  margin: 0 0 10px;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-disclaimer .clause-outro p {
  margin: 0 0 18px;
  max-width: 640px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-disclaimer .clause-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============================================================
   桌面端：编号轨道常驻在左侧，正文缩进对齐
   ============================================================ */
@media (min-width: 900px) {

  .page-disclaimer .clause-nav-wrap {
    display: block;
  }

  .page-disclaimer .clause-layout {
    grid-template-columns: var(--rail-col) minmax(0, 1fr);
    gap: var(--rail-gap);
    max-width: 1060px;
    align-items: start;
  }

  .page-disclaimer .clause-rail {
    position: sticky;
    top: 104px;
  }

  .page-disclaimer .clause-rail__list {
    flex-direction: column;
    gap: 2px;
    padding: 0;
    overflow: visible;
  }

  .page-disclaimer .clause-rail__link {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    padding: 10px 12px;
    border-color: transparent;
    border-radius: var(--r-md);
    white-space: normal;
  }

  .page-disclaimer .clause-rail__num {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1;
    color: var(--mist);
    transition: color var(--dur) var(--ease);
  }

  .page-disclaimer .clause-rail__link:hover .clause-rail__num,
  .page-disclaimer .clause-rail__link:focus-visible .clause-rail__num {
    color: var(--cyan);
  }

  .page-disclaimer .clause-rail__link:hover,
  .page-disclaimer .clause-rail__link:focus-visible {
    border-color: var(--grid);
    background-color: var(--wash);
  }

  .page-disclaimer .clause-rail__label {
    font-size: 11px;
    line-height: 1.45;
    letter-spacing: .04em;
    color: var(--mist);
  }

  .page-disclaimer .clause__body {
    padding-left: var(--clause-indent);
    max-width: 740px;
  }

  .page-disclaimer .clause-note {
    padding-left: calc(var(--rail-col) + var(--rail-gap) + var(--clause-indent));
    max-width: 1060px;
  }

  .page-disclaimer .clause-outro {
    padding: 30px 34px;
  }
}

/* ============================================================
   宽屏微调
   ============================================================ */
@media (min-width: 1240px) {

  .page-disclaimer .clause-rail__num {
    font-size: 30px;
  }

  .page-disclaimer .clause__title {
    font-size: 22px;
  }
}

/* ============================================================
   降低动效偏好
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .clause-rail__link,
  .page-disclaimer .clause-copy,
  .page-disclaimer .clause__toggle::before,
  .page-disclaimer .clause__toggle::after,
  .page-disclaimer .clause-rail__num {
    transition: none;
  }
}