.page-disclaimer {
  --terms-measure: 66ch;
  --terms-aside: 208px;
  --terms-gap: clamp(28px, 5vw, 72px);
  --terms-clause-space: clamp(44px, 7vw, 84px);
}

/* ---------- 面包屑 ---------- */
.page-disclaimer .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-top: clamp(104px, 14vh, 150px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate-500);
}

.page-disclaimer .breadcrumb a {
  color: var(--paper-400);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-disclaimer .breadcrumb a:hover,
.page-disclaimer .breadcrumb a:focus-visible {
  color: var(--cyan-400);
}

.page-disclaimer .breadcrumb__sep {
  color: var(--line-600);
}

.page-disclaimer .breadcrumb [aria-current="page"] {
  color: var(--paper-000);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .terms-hero {
  padding-block: clamp(24px, 4vw, 48px) clamp(44px, 7vw, 88px);
}

.page-disclaimer .terms-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 56px);
  align-items: center;
}

.page-disclaimer .terms-hero h1 {
  margin: 16px 0 0;
  font-size: clamp(32px, 5.2vw, 62px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--paper-000);
  overflow-wrap: break-word;
}

.page-disclaimer .terms-hero .lede {
  margin-top: 20px;
  max-width: 54ch;
  color: var(--paper-400);
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
}

.page-disclaimer .terms-hero__rule {
  margin-top: clamp(22px, 3vw, 32px);
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(
    90deg,
    var(--cyan-400) 0%,
    var(--cyan-700) 34%,
    var(--amber-700) 60%,
    rgba(5, 7, 11, 0) 100%
  );
}

.page-disclaimer .terms-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin-top: 22px;
  font-size: 14px;
  color: var(--paper-400);
}

.page-disclaimer .terms-meta .stamp {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-disclaimer .terms-hero__figure {
  margin: 0;
}

.page-disclaimer .terms-hero__figure .figure__media {
  aspect-ratio: 5 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-800);
  border: 1px solid var(--line-600);
}

.page-disclaimer .terms-hero__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-disclaimer .terms-hero__figure .figure__caption {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--slate-500);
  max-width: 42ch;
}

/* ---------- 条款主体布局 ---------- */
.page-disclaimer .terms-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--terms-gap);
  padding-bottom: clamp(56px, 9vw, 116px);
}

/* ---------- 条款目录 ---------- */
.page-disclaimer .terms-nav__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--slate-500);
}

.page-disclaimer .terms-nav__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-disclaimer .terms-nav__list::-webkit-scrollbar {
  display: none;
}

.page-disclaimer .terms-nav__link {
  display: inline-block;
  white-space: nowrap;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-600);
  font-size: 13px;
  line-height: 1.4;
  color: var(--paper-400);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease),
    background-color 0.2s var(--ease);
}

.page-disclaimer .terms-nav__link:hover,
.page-disclaimer .terms-nav__link:focus-visible {
  color: var(--paper-000);
  border-color: var(--slate-500);
}

.page-disclaimer .terms-nav__link.is-active {
  color: var(--void-000);
  background: var(--cyan-400);
  border-color: var(--cyan-400);
}

/* ---------- 条款条目 ---------- */
.page-disclaimer .terms-body {
  display: flex;
  flex-direction: column;
  gap: var(--terms-clause-space);
  max-width: 78ch;
}

.page-disclaimer .terms-clause {
  border-top: 1px solid var(--line-600);
  padding-top: clamp(22px, 3vw, 34px);
  scroll-margin-top: calc(var(--header-h) + 32px);
}

.page-disclaimer .terms-clause__head {
  display: flex;
  gap: 14px;
  align-items: baseline;
  margin-bottom: 16px;
}

.page-disclaimer .terms-clause__head .index {
  flex: none;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan-400);
}

.page-disclaimer .terms-clause h2 {
  margin: 0;
  font-size: clamp(21px, 2.5vw, 30px);
  line-height: 1.28;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper-000);
}

.page-disclaimer .terms-clause__body {
  max-width: var(--terms-measure);
  color: var(--paper-400);
  font-size: 16px;
  line-height: 1.9;
}

.page-disclaimer .terms-clause__body p {
  margin: 0 0 16px;
}

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

.page-disclaimer .terms-clause__body a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-700);
  transition: border-color 0.2s var(--ease);
}

.page-disclaimer .terms-clause__body a:hover,
.page-disclaimer .terms-clause__body a:focus-visible {
  border-bottom-color: var(--cyan-400);
}

.page-disclaimer .terms-clause__body ul {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-disclaimer .terms-clause__body ul:last-child {
  margin-bottom: 0;
}

.page-disclaimer .terms-clause__body li {
  position: relative;
  padding-left: 20px;
}

.page-disclaimer .terms-clause__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 9px;
  height: 1px;
  background: var(--cyan-400);
}

/* ---------- 折叠条款 ---------- */
.page-disclaimer .fold {
  margin: 22px 0 0;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-md);
  background: var(--ink-800);
  overflow: hidden;
}

.page-disclaimer .fold > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper-000);
  transition: color 0.2s var(--ease);
}

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

.page-disclaimer .fold > summary:hover {
  color: var(--cyan-400);
}

.page-disclaimer .fold > summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan-400);
}

.page-disclaimer .fold[open] > summary::after {
  content: "−";
}

.page-disclaimer .fold__body {
  padding: 0 20px 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper-400);
}

/* ---------- 页尾版本行 ---------- */
.page-disclaimer .terms-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 24px;
  border-top: 1px solid var(--line-600);
  padding-top: 26px;
}

.page-disclaimer .terms-foot__version {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-size: 13px;
  color: var(--slate-500);
}

.page-disclaimer .terms-foot__version .mono {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--amber-400);
}

.page-disclaimer .terms-foot .copy-btn {
  appearance: none;
  border: 1px solid var(--line-600);
  background: transparent;
  color: var(--paper-400);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-disclaimer .terms-foot .copy-btn:hover,
.page-disclaimer .terms-foot .copy-btn:focus-visible {
  color: var(--cyan-400);
  border-color: var(--cyan-400);
}

.page-disclaimer .terms-foot .copy-btn.is-copied {
  color: var(--amber-400);
  border-color: var(--amber-400);
}

/* ---------- 返回顶部 ---------- */
.page-disclaimer .terms-totop {
  position: fixed;
  right: clamp(16px, 3.5vw, 40px);
  bottom: clamp(16px, 3.5vw, 40px);
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-600);
  background: rgba(11, 16, 23, 0.88);
  backdrop-filter: blur(8px);
  color: var(--paper-400);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-disclaimer .terms-totop:hover,
.page-disclaimer .terms-totop:focus-visible {
  color: var(--cyan-400);
  border-color: var(--cyan-400);
}

/* ---------- 响应式 ---------- */
@media (min-width: 960px) {
  .page-disclaimer .terms-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }
}

@media (min-width: 1000px) {
  .page-disclaimer .terms-layout {
    grid-template-columns: var(--terms-aside) minmax(0, 1fr);
  }

  .page-disclaimer .terms-nav {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }

  .page-disclaimer .terms-nav__title {
    margin-bottom: 16px;
  }

  .page-disclaimer .terms-nav__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-disclaimer .terms-nav__link {
    display: block;
    white-space: normal;
    padding: 8px 12px;
    border: 1px solid transparent;
    border-left: 2px solid transparent;
    border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
    background: transparent;
  }

  .page-disclaimer .terms-nav__link:hover {
    color: var(--paper-000);
    border-color: transparent;
    border-left-color: var(--slate-500);
  }

  .page-disclaimer .terms-nav__link.is-active {
    color: var(--cyan-400);
    background: rgba(59, 224, 209, 0.08);
    border-color: transparent;
    border-left-color: var(--cyan-400);
  }
}

@media (max-width: 600px) {
  .page-disclaimer .terms-clause__head {
    gap: 10px;
  }

  .page-disclaimer .terms-clause__head .index {
    padding-top: 3px;
    font-size: 12px;
  }

  .page-disclaimer .fold > summary {
    padding: 14px 16px;
    font-size: 14px;
  }

  .page-disclaimer .fold__body {
    padding: 0 16px 16px;
  }

  .page-disclaimer .terms-totop {
    padding: 9px 14px;
    font-size: 11px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .terms-nav__link,
  .page-disclaimer .terms-clause__body a,
  .page-disclaimer .terms-foot .copy-btn,
  .page-disclaimer .terms-totop,
  .page-disclaimer .fold > summary,
  .page-disclaimer .breadcrumb a {
    transition: none;
  }
}