/* ===== 使用规范页（page-disclaimer） ===== */
.page-disclaimer {
  --clause-rule: rgba(30, 127, 168, .22);
  --clause-soft: rgba(223, 231, 236, .55);
}

/* 面包屑的呼吸留白 */
.page-disclaimer .breadcrumb {
  padding-top: clamp(1rem, 3vw, 1.6rem);
  padding-bottom: .35rem;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .disclaimer-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink-900);
  color: var(--salt);
  padding: clamp(2.25rem, 7vw, 4.5rem) 0 clamp(2.75rem, 8vw, 5rem);
  margin-bottom: clamp(2.5rem, 7vw, 5rem);
}

.page-disclaimer .disclaimer-hero__canvas {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-disclaimer .disclaimer-hero__canvas img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .3;
}

.page-disclaimer .disclaimer-hero__canvas::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 92% at 78% 12%, rgba(30, 127, 168, .52) 0%, rgba(11, 27, 43, 0) 62%),
    linear-gradient(160deg, rgba(11, 27, 43, .92) 0%, rgba(20, 57, 90, .88) 52%, rgba(11, 27, 43, .95) 100%);
}

.page-disclaimer .disclaimer-hero__inner {
  position: relative;
}

.page-disclaimer .disclaimer-hero .legend-tag {
  color: var(--lake-300);
}

.page-disclaimer .disclaimer-hero .legend-tag::before {
  background: var(--flag);
}

.page-disclaimer .disclaimer-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 6.2vw, 3.65rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  margin: 1rem 0 1.1rem;
  max-width: 15ch;
  color: var(--salt);
}

.page-disclaimer .disclaimer-hero__lede {
  max-width: 58ch;
  margin: 0;
  font-size: clamp(.98rem, 1.35vw, 1.08rem);
  line-height: 1.85;
  color: rgba(248, 250, 251, .82);
}

.page-disclaimer .disclaimer-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .7rem;
  margin-top: clamp(1.4rem, 4vw, 2.1rem);
}

.page-disclaimer .disclaimer-hero__meta .chip {
  background: rgba(156, 207, 227, .14);
  border: 1px solid rgba(156, 207, 227, .34);
  color: var(--salt);
}

/* ---------- 条款双栏 ---------- */
.page-disclaimer .clause-shell {
  padding-top: clamp(.5rem, 2vw, 1.25rem);
}

.page-disclaimer .clause-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 5vw, 3.5rem);
}

.page-disclaimer .clause-rail {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.page-disclaimer .clause-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .1rem;
  border-top: 1px solid var(--mist);
}

.page-disclaimer .clause-list li {
  border-bottom: 1px solid var(--mist);
}

.page-disclaimer .clause-list a {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: .7rem;
  padding: .68rem .5rem;
  border-left: 2px solid transparent;
  border-radius: var(--radius-s);
  color: var(--text);
  font-size: .95rem;
  line-height: 1.5;
  text-decoration: none;
  transition: background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}

.page-disclaimer .clause-list a:hover,
.page-disclaimer .clause-list a:focus-visible {
  background: rgba(30, 127, 168, .09);
  border-left-color: var(--lake);
  color: var(--ink-700);
}

.page-disclaimer .clause-list__num {
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .08em;
  color: var(--lake);
}

.page-disclaimer .clause-progress {
  display: flex;
  flex-direction: column;
  gap: .55rem;
  padding: .85rem 1rem;
  border-radius: var(--radius-m);
  background: var(--clause-soft);
}

.page-disclaimer .clause-progress__label {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-700);
}

.page-disclaimer .clause-progress .route-progress {
  height: 4px;
  border-radius: var(--radius-pill);
  background: rgba(30, 127, 168, .18);
  overflow: hidden;
}

.page-disclaimer .clause-progress .route-progress-fill {
  display: block;
  height: 100%;
  width: 0;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--lake), var(--flag));
  transition: width .4s var(--ease);
}

/* ---------- 条款正文 ---------- */
.page-disclaimer .clause-body {
  display: flex;
  flex-direction: column;
  gap: clamp(2rem, 5vw, 3.25rem);
}

.page-disclaimer .clause-item {
  padding-top: clamp(1.1rem, 3vw, 1.6rem);
  border-top: 1px solid var(--clause-rule);
}

.page-disclaimer .clause-item__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .85rem;
  align-items: baseline;
}

.page-disclaimer .clause-item__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.55rem, 4.6vw, 2.6rem);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--flag);
}

.page-disclaimer .clause-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  line-height: 1.3;
  color: var(--ink-700);
}

.page-disclaimer .clause-item__lede {
  margin: .9rem 0 1.1rem;
  max-width: 40em;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text);
}

/* 折叠说明 */
.page-disclaimer .clause-item .fold {
  border: 1px solid var(--mist);
  border-radius: var(--radius-m);
  background: linear-gradient(180deg, rgba(223, 231, 236, .48), rgba(248, 250, 251, .92));
  overflow: hidden;
}

.page-disclaimer .clause-item .fold-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: .75rem;
  width: 100%;
  padding: .85rem 1rem;
  border: 0;
  background: none;
  color: var(--ink-700);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.page-disclaimer .clause-item .fold-head:hover,
.page-disclaimer .clause-item .fold-head:focus-visible {
  background: rgba(30, 127, 168, .07);
}

.page-disclaimer .clause-item .fold-index {
  display: inline-block;
  padding: .26rem .5rem;
  border-radius: var(--radius-pill);
  background: rgba(232, 99, 26, .12);
  color: var(--flag-dark);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
}

.page-disclaimer .clause-item .fold-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .97rem;
  line-height: 1.4;
}

.page-disclaimer .clause-item .fold-mark {
  display: grid;
  place-items: center;
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 50%;
  background: var(--lake);
  color: var(--salt);
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  transition: transform .3s var(--ease), background .3s var(--ease);
}

.page-disclaimer .clause-item .fold[data-open] .fold-mark {
  background: var(--flag);
  transform: rotate(45deg);
}

.page-disclaimer .clause-item .fold-body {
  padding: 0 1rem 1.1rem;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--text);
}

.page-disclaimer .clause-item .fold-inner {
  padding-top: .9rem;
  border-top: 1px dashed rgba(30, 127, 168, .3);
}

.page-disclaimer .clause-item .fold-inner ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .55rem;
}

.page-disclaimer .clause-item .fold-inner li {
  position: relative;
  padding-left: 1.15rem;
}

.page-disclaimer .clause-item .fold-inner li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62rem;
  width: .46rem;
  height: .46rem;
  border-radius: 50%;
  background: var(--lake);
}

.page-disclaimer .clause-example {
  margin-top: .95rem;
  padding: .8rem 1rem;
  border-left: 3px solid var(--flag);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: rgba(242, 169, 59, .12);
}

.page-disclaimer .clause-example__tag {
  display: inline-block;
  margin-bottom: .3rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--flag-dark);
}

.page-disclaimer .clause-example p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--text);
}

/* ---------- 收尾 ---------- */
.page-disclaimer .disclaimer-close {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.25rem, 4vw, 2.25rem);
  align-items: center;
  padding: clamp(1.5rem, 5vw, 2.5rem);
  border-radius: var(--radius-l);
  background: linear-gradient(140deg, rgba(156, 207, 227, .3) 0%, rgba(248, 250, 251, 1) 62%);
  box-shadow: var(--shadow-card);
}

.page-disclaimer .disclaimer-close h2 {
  margin: .75rem 0 .6rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.3rem, 3.2vw, 1.85rem);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--ink-700);
}

.page-disclaimer .disclaimer-close p {
  margin: 0;
  max-width: 42em;
  font-size: .98rem;
  line-height: 1.8;
  color: var(--text);
}

.page-disclaimer .disclaimer-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 48rem) {
  .page-disclaimer .clause-item__head {
    grid-template-columns: 4.5rem 1fr;
    gap: 1.1rem;
  }

  .page-disclaimer .disclaimer-close {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  }

  .page-disclaimer .disclaimer-close__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 62rem) {
  .page-disclaimer .clause-grid {
    grid-template-columns: minmax(200px, 3fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-disclaimer .clause-rail {
    position: sticky;
    top: 6.5rem;
  }

  .page-disclaimer .clause-item__lede {
    font-size: 1.05rem;
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .clause-list a,
  .page-disclaimer .clause-item .fold-mark,
  .page-disclaimer .clause-progress .route-progress-fill {
    transition: none;
  }
}