/* ===== 使用条款 · 页面专属样式（作用域 .page-disclaimer） ===== */
.page-disclaimer {
  --clause-gap: clamp(26px, 4vw, 44px);
  background: var(--snow);
  color: var(--ink);
  font-family: var(--font-sans);
}

/* 面包屑 */
.page-disclaimer .breadcrumb {
  padding: clamp(18px, 3vw, 30px) 0 0;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--slate);
}
.page-disclaimer .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-disclaimer .breadcrumb li + li::before {
  content: "/";
  margin: 0 .55em;
  color: var(--rule-strong);
}
.page-disclaimer .breadcrumb a {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
}
.page-disclaimer .breadcrumb a:hover {
  color: var(--vermilion);
  border-color: var(--vermilion);
}
.page-disclaimer .breadcrumb li[aria-current="page"] {
  color: var(--ink);
}

/* 首屏 */
.page-disclaimer .terms-hero {
  padding: clamp(26px, 5vw, 54px) 0 clamp(20px, 3vw, 30px);
}
.page-disclaimer .terms-hero__kicker {
  display: inline-block;
  margin: 0 0 18px;
  padding: 5px 10px;
  border: 1px solid var(--ochre);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--ochre);
}
.page-disclaimer .terms-hero h1 {
  max-width: 16em;
  margin: 0 0 20px;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5.2vw, 3.3rem);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--ink);
}
.page-disclaimer .terms-hero__lead {
  max-width: 33em;
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--slate);
}

/* 顶部窄幅图 */
.page-disclaimer .terms-banner {
  margin: 0 0 var(--clause-gap);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--sand);
}
.page-disclaimer .terms-banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 5;
  object-fit: cover;
}

/* 主栅格：正文 + 右侧竖向索引 */
.page-disclaimer .terms-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--clause-gap);
  padding-bottom: clamp(36px, 6vw, 76px);
}
.page-disclaimer .terms-main {
  min-width: 0;
}

/* 章节 */
.page-disclaimer .clause {
  scroll-margin-top: 116px;
  padding-top: clamp(22px, 3vw, 32px);
  border-top: 1px solid var(--rule);
}
.page-disclaimer .clause:first-of-type {
  padding-top: 0;
  border-top: 0;
}
.page-disclaimer .clause__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0 0 16px;
}
.page-disclaimer .clause__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: .06em;
  color: var(--vermilion);
}
.page-disclaimer .clause__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.6vw, 1.7rem);
  line-height: 1.3;
  letter-spacing: -.01em;
}
.page-disclaimer .clause__body {
  max-width: 34em;
}
.page-disclaimer .clause__lede {
  margin: 0 0 16px;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--slate);
}
.page-disclaimer .clause__body a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule-strong);
}
.page-disclaimer .clause__body a:hover {
  color: var(--vermilion);
  border-color: var(--vermilion);
}

/* 编号条目 */
.page-disclaimer .clause__list {
  counter-reset: clause-item;
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-disclaimer .clause__list li {
  position: relative;
  counter-increment: clause-item;
  padding-left: 2.75em;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--ink);
}
.page-disclaimer .clause__list li::before {
  content: counter(clause-item, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .2em;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .04em;
  color: var(--slate);
}

/* 引用格式示例 */
.page-disclaimer .cite {
  margin-top: 22px;
  padding: 18px 20px;
  background: var(--sand);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}
.page-disclaimer .cite__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--slate);
}
.page-disclaimer .cite__text {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--ink);
  overflow-wrap: anywhere;
}
.page-disclaimer .copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .06em;
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}
.page-disclaimer .copy-btn:hover,
.page-disclaimer .copy-btn:focus-visible {
  border-color: var(--vermilion);
  color: var(--vermilion);
  background: var(--snow);
  outline: none;
}

/* 右侧竖向索引 */
.page-disclaimer .toc {
  padding: 18px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--white);
}
.page-disclaimer .toc__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--slate);
}
.page-disclaimer .toc__list {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-disclaimer .toc__link {
  display: block;
  padding: 9px 8px 9px 12px;
  border-left: 2px solid transparent;
  color: var(--slate);
  font-size: .875rem;
  line-height: 1.45;
  text-decoration: none;
  transition: color .2s ease, background .2s ease, border-color .2s ease;
}
.page-disclaimer .toc__link:hover {
  color: var(--ink);
  background: rgba(28, 26, 23, .035);
}
.page-disclaimer .toc__link[aria-current="true"] {
  border-left-color: var(--vermilion);
  color: var(--ink);
}

/* 侧栏相关入口 */
.page-disclaimer .side-links {
  margin-top: 16px;
  padding: 16px 18px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--sand);
}
.page-disclaimer .side-links__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--slate);
}
.page-disclaimer .side-links ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-disclaimer .side-links a {
  color: var(--ink);
  font-size: .875rem;
  line-height: 1.5;
  text-decoration: none;
  border-bottom: 1px solid var(--rule-strong);
}
.page-disclaimer .side-links a:hover {
  color: var(--vermilion);
  border-color: var(--vermilion);
}

/* 页尾版本条 */
.page-disclaimer .terms-version {
  background: var(--sand);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.page-disclaimer .terms-version__inner {
  display: grid;
  gap: 12px;
  padding: clamp(20px, 4vw, 30px) 0;
}
.page-disclaimer .terms-version__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--ochre);
}
.page-disclaimer .terms-version__text {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--ink);
}
.page-disclaimer .terms-version__text a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--vermilion);
}
.page-disclaimer .terms-version__text a:hover {
  color: var(--vermilion);
}
.page-disclaimer .terms-version__links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 0;
}
.page-disclaimer .terms-version__link {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .04em;
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid var(--rule-strong);
}
.page-disclaimer .terms-version__link:hover {
  color: var(--vermilion);
  border-color: var(--vermilion);
}

/* 窄屏：索引转横向标签条 */
@media (max-width: 899px) {
  .page-disclaimer .toc {
    padding: 14px;
  }
  .page-disclaimer .toc__list {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }
  .page-disclaimer .toc__list li {
    flex: 0 0 auto;
  }
  .page-disclaimer .toc__link {
    padding: 6px 10px;
    border-left: 0;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
    font-size: .8125rem;
  }
  .page-disclaimer .toc__link:hover {
    background: transparent;
  }
  .page-disclaimer .toc__link[aria-current="true"] {
    border-left-color: transparent;
    border-bottom-color: var(--vermilion);
  }
}

/* 桌面：右侧粘性索引 */
@media (min-width: 900px) {
  .page-disclaimer .terms-layout {
    grid-template-columns: minmax(0, 1fr) 248px;
    grid-template-areas: "main side";
    align-items: start;
    gap: clamp(36px, 5vw, 64px);
  }
  .page-disclaimer .terms-main {
    grid-area: main;
  }
  .page-disclaimer .terms-side {
    grid-area: side;
    position: sticky;
    top: 104px;
  }
}

@media (min-width: 768px) {
  .page-disclaimer .terms-version__inner {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 28px;
  }
}

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