.page-disclaimer {
  --wd-line: rgba(0, 229, 255, 0.20);
  --wd-paper-ink: #14181d;
  --wd-body: rgba(242, 237, 228, 0.84);
  position: relative;
  padding-top: clamp(22px, 4vw, 52px);
  padding-bottom: clamp(48px, 8vw, 104px);
  background-color: var(--ink);
  background-image: repeating-linear-gradient(
    0deg,
    rgba(242, 237, 228, 0.035) 0 1px,
    rgba(242, 237, 228, 0) 1px 5px
  );
  color: var(--paper);
  overflow-x: hidden;
}

.page-disclaimer .usage-wrap {
  width: min(1240px, 100% - 2 * var(--frame-x));
  margin-inline: auto;
}

/* 面包屑 */
.page-disclaimer .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--graphite);
}

.page-disclaimer .breadcrumb a {
  color: var(--graphite);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

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

.page-disclaimer .breadcrumb span:last-child {
  color: var(--paper);
}

/* 首屏 */
.page-disclaimer .usage-hero {
  position: relative;
  overflow: hidden;
  margin-top: 24px;
  padding: clamp(22px, 3.5vw, 46px) clamp(18px, 3vw, 42px);
  border: 1px solid var(--wd-line);
  border-radius: var(--radius);
  background:
    linear-gradient(120deg, rgba(0, 229, 255, 0.09), rgba(155, 93, 229, 0.08) 46%, rgba(7, 9, 14, 0) 78%),
    var(--slate-deep);
  box-shadow: var(--shadow-paper);
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 240px;
  height: 240px;
  border: 1px solid rgba(0, 229, 255, 0.18);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-disclaimer .usage-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-disclaimer .usage-hero__title {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6vw, 60px);
  line-height: 1.06;
  letter-spacing: 0.005em;
  color: var(--paper);
  text-shadow: 0 0 28px rgba(0, 229, 255, 0.24);
}

.page-disclaimer .usage-hero__lede {
  max-width: 62ch;
  margin: 18px 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
  color: rgba(242, 237, 228, 0.86);
}

.page-disclaimer .usage-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin: 26px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line-steel);
  list-style: none;
}

.page-disclaimer .usage-hero__meta li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 130px;
}

.page-disclaimer .usage-hero__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--graphite);
}

.page-disclaimer .usage-hero__v {
  font-family: var(--font-mono);
  font-size: 14.5px;
  color: var(--cyan-soft);
}

/* 主体两栏 */
.page-disclaimer .usage-body {
  margin-top: clamp(32px, 5vw, 66px);
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

/* 术语速查 */
.page-disclaimer .term-board {
  border-top: 2px solid var(--clay);
  padding-top: 14px;
}

.page-disclaimer .term-board__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--graphite);
}

.page-disclaimer .term-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .term-list a {
  display: block;
  padding-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.35);
  transition: color 0.15s ease, border-color 0.15s ease;
}

.page-disclaimer .term-list a:hover,
.page-disclaimer .term-list a:focus-visible {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan-soft);
}

.page-disclaimer .term-list small {
  display: block;
  margin-top: 6px;
  font-family: var(--font-sans);
  font-size: 12px;
  line-height: 1.65;
  color: var(--graphite);
}

/* 正文章节 */
.page-disclaimer .doc-sec {
  scroll-margin-top: 108px;
  padding-bottom: clamp(28px, 4vw, 50px);
  margin-bottom: clamp(28px, 4vw, 50px);
  border-bottom: 1px solid var(--line-steel);
}

.page-disclaimer .doc-sec:last-of-type {
  border-bottom: 0;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-disclaimer .doc-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.page-disclaimer .doc-title {
  order: 0;
  margin: 0;
  font-size: clamp(21px, 2.6vw, 29px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-disclaimer .doc-num {
  order: 2;
  flex: none;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--clay);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--clay);
}

.page-disclaimer .doc-sec p {
  max-width: 68ch;
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--wd-body);
}

.page-disclaimer .doc-sec a {
  color: var(--cyan-soft);
  text-decoration: underline;
  text-decoration-color: rgba(0, 229, 255, 0.45);
  text-underline-offset: 3px;
}

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

.page-disclaimer .doc-tip {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  max-width: 66ch;
  margin: 20px 0 0;
  padding: 12px 16px;
  border-left: 2px solid var(--cyan);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(0, 229, 255, 0.055);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 237, 228, 0.9);
}

.page-disclaimer .doc-tip::before {
  content: "\2192";
  flex: none;
  font-family: var(--font-mono);
  color: var(--cyan);
}

/* 引用写法与配图 */
.page-disclaimer .split-doc {
  display: grid;
  gap: 24px;
}

.page-disclaimer .cite-label {
  margin: 22px 0 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--clay);
}

.page-disclaimer .cite-sample {
  max-width: 560px;
  margin: 0;
  padding: 16px 18px;
  overflow-x: auto;
  border: 1px solid var(--line-paper);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--wd-paper-ink);
  box-shadow: var(--shadow-paper);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 2;
  white-space: pre-wrap;
  word-break: break-word;
}

.page-disclaimer .wd-figure {
  margin: 0;
}

.page-disclaimer .wd-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--wd-line);
  border-radius: var(--radius);
}

.page-disclaimer .wd-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--graphite);
}

/* 底部相关链接 */
.page-disclaimer .doc-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  padding-top: 20px;
  border-top: 1px solid var(--line-steel);
}

.page-disclaimer .doc-links a {
  display: inline-block;
  padding: 9px 16px;
  border: 1px solid rgba(0, 229, 255, 0.32);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--cyan-soft);
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease, transform 0.15s ease;
}

.page-disclaimer .doc-links a:hover,
.page-disclaimer .doc-links a:focus-visible {
  border-color: var(--cyan);
  background: rgba(0, 229, 255, 0.1);
  transform: translateY(-2px);
}

.page-disclaimer .doc-links a:last-child {
  border-color: var(--lava);
  color: var(--lava);
}

.page-disclaimer .doc-links a:last-child:hover,
.page-disclaimer .doc-links a:last-child:focus-visible {
  border-color: var(--lava);
  background: rgba(255, 107, 26, 0.14);
}

/* 平板及以上 */
@media (min-width: 720px) {
  .page-disclaimer .split-doc {
    grid-template-columns: minmax(0, 1fr) 236px;
    align-items: start;
    gap: 28px;
  }
}

/* 桌面：左侧粘性术语表 */
@media (min-width: 920px) {
  .page-disclaimer .usage-body {
    grid-template-columns: 226px minmax(0, 1fr);
    align-items: start;
    gap: clamp(36px, 5vw, 76px);
  }

  .page-disclaimer .term-board {
    position: sticky;
    top: 104px;
    border-top: 0;
    border-left: 2px solid var(--clay);
    padding-top: 0;
    padding-left: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .doc-links a,
  .page-disclaimer .term-list a {
    transition: none;
  }

  .page-disclaimer .doc-links a:hover,
  .page-disclaimer .doc-links a:focus-visible {
    transform: none;
  }
}