.page-disclaimer {
  background: var(--paper-soft);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-disclaimer .usage-link {
  color: var(--gold-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color 240ms var(--ease);
}

.page-disclaimer .usage-link:hover,
.page-disclaimer .usage-link:focus-visible {
  color: var(--cinnabar);
}

/* ---------- 首屏 ---------- */

.page-disclaimer .usage-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(18px, 3.6vw, 40px) clamp(30px, 5vw, 62px);
  background:
    radial-gradient(92% 74% at 100% 0%, rgba(201, 162, 75, 0.24) 0%, rgba(201, 162, 75, 0) 64%),
    var(--paper);
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 2px;
  background: var(--gold-sheen);
  opacity: 0.6;
}

.page-disclaimer .usage-hero__title {
  margin: 18px 0 0;
  font-size: clamp(28px, 6vw, 62px);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.08;
  max-width: 15em;
}

.page-disclaimer .usage-hero__lede {
  margin: 16px 0 0;
  font-size: clamp(15px, 1.7vw, 17.5px);
  line-height: 1.85;
  color: var(--stone);
  max-width: 60ch;
}

.page-disclaimer .usage-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-hero__meta-item {
  padding: 7px 15px;
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-pill);
  background: rgba(244, 239, 230, 0.72);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold-deep);
}

.page-disclaimer .usage-hero__mark {
  display: none;
}

/* ---------- 分段标签 ---------- */

.page-disclaimer .usage-tabs {
  border-top: 1px solid var(--ink-line);
  border-bottom: 1px solid var(--ink-line);
  background: rgba(244, 239, 230, 0.9);
}

.page-disclaimer .usage-tabs__inner {
  display: flex;
  gap: 8px;
  padding-block: 12px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-disclaimer .usage-tabs__inner::-webkit-scrollbar {
  display: none;
}

.page-disclaimer .usage-tab {
  flex: 0 0 auto;
  padding: 9px 18px;
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-pill);
  background: var(--paper);
  color: var(--ink);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background 240ms var(--ease), color 240ms var(--ease), border-color 240ms var(--ease);
}

.page-disclaimer .usage-tab:hover,
.page-disclaimer .usage-tab:focus-visible {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--gold-light);
}

/* ---------- 主体骨架 ---------- */

.page-disclaimer .usage-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 52px);
  padding-block: clamp(28px, 4.6vw, 64px);
}

.page-disclaimer .usage-main {
  min-width: 0;
}

.page-disclaimer .usage-spine {
  display: none;
}

/* ---------- 章节卡片 ---------- */

.page-disclaimer .usage-sec {
  padding: clamp(22px, 3.2vw, 40px);
  border: 1px solid rgba(138, 107, 50, 0.18);
  border-radius: var(--radius);
  background: var(--paper);
  scroll-margin-top: 24px;
}

.page-disclaimer .usage-sec + .usage-sec {
  margin-top: clamp(16px, 2.4vw, 26px);
}

.page-disclaimer .usage-sec--ink {
  background-color: var(--ink);
  background-image: linear-gradient(118deg, rgba(201, 162, 75, 0.18) 0%, rgba(11, 12, 13, 0) 48%);
  border-color: var(--ink-line);
  color: var(--paper);
}

.page-disclaimer .usage-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 16px;
  align-items: start;
  margin-bottom: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(138, 107, 50, 0.2);
}

.page-disclaimer .usage-sec--ink .usage-sec__head {
  border-bottom-color: rgba(201, 162, 75, 0.28);
}

.page-disclaimer .usage-sec__num {
  font-family: var(--font-narrow);
  font-weight: 300;
  font-size: clamp(34px, 4.6vw, 54px);
  line-height: 0.82;
  letter-spacing: 0.02em;
  background: var(--gold-sheen);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.page-disclaimer .usage-sec__title {
  margin: 0;
  font-size: clamp(18px, 2.2vw, 25px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.36;
}

.page-disclaimer .usage-sec p {
  margin: 0 0 0.9em;
  font-size: 15.5px;
  line-height: 1.85;
  max-width: 60ch;
}

.page-disclaimer .usage-sec p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .usage-sec--ink p {
  color: rgba(244, 239, 230, 0.82);
}

.page-disclaimer .usage-sec--ink .usage-link {
  color: var(--gold-light);
}

/* ---------- 条款列表 ---------- */

.page-disclaimer .usage-clauses {
  margin: 18px 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.page-disclaimer .usage-clause {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(138, 107, 50, 0.26);
  font-size: 15px;
  line-height: 1.72;
}

.page-disclaimer .usage-clause:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-disclaimer .usage-clause__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold-deep);
}

.page-disclaimer .usage-sec--ink .usage-clause {
  border-bottom-color: rgba(201, 162, 75, 0.26);
  color: rgba(244, 239, 230, 0.88);
}

.page-disclaimer .usage-sec--ink .usage-clause__idx {
  color: var(--gold-light);
}

/* ---------- 小卡片条目 ---------- */

.page-disclaimer .usage-defs {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 18px 0;
}

.page-disclaimer .usage-def {
  padding: 16px 18px;
  border-inline-start: 3px solid var(--gold);
  border-radius: calc(var(--radius) - 8px);
  background: var(--paper-soft);
}

.page-disclaimer .usage-def--moss {
  border-inline-start-color: var(--moss);
  background: rgba(94, 107, 87, 0.1);
}

.page-disclaimer .usage-def--clay {
  border-inline-start-color: var(--clay);
  background: rgba(176, 106, 74, 0.1);
}

.page-disclaimer .usage-def__term {
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.5;
}

.page-disclaimer .usage-def__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--stone);
}

.page-disclaimer .usage-sec--ink .usage-def__desc {
  color: rgba(244, 239, 230, 0.78);
}

/* ---------- 导出区块 ---------- */

.page-disclaimer .usage-flow {
  display: block;
  width: 100%;
  height: auto;
  margin: 22px 0 6px;
}

.page-disclaimer .usage-formats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-format {
  flex: 1 1 200px;
  padding: 15px 18px;
  border: 1px solid rgba(201, 162, 75, 0.38);
  border-radius: 18px;
  background: rgba(201, 162, 75, 0.09);
}

.page-disclaimer .usage-format__name {
  display: block;
  font-family: var(--font-narrow);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-light);
}

.page-disclaimer .usage-format__desc {
  display: block;
  margin-top: 5px;
  font-size: 13.5px;
  line-height: 1.65;
  color: rgba(244, 239, 230, 0.76);
}

.page-disclaimer .usage-media {
  margin: clamp(22px, 3vw, 32px) 0 0;
}

.page-disclaimer .usage-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid rgba(201, 162, 75, 0.3);
  border-radius: calc(var(--radius) - 6px);
  object-fit: cover;
}

.page-disclaimer .usage-media__cap {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(244, 239, 230, 0.55);
}

/* ---------- 行动区 ---------- */

.page-disclaimer .usage-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 桌面端 ---------- */

@media (min-width: 700px) {
  .page-disclaimer .usage-defs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-hero__mark {
    display: block;
    position: absolute;
    inset-inline-end: clamp(20px, 4.6vw, 56px);
    bottom: clamp(14px, 2.4vw, 30px);
    font-family: var(--font-narrow);
    font-weight: 200;
    font-size: clamp(84px, 11vw, 148px);
    line-height: 0.78;
    letter-spacing: 0.02em;
    background: var(--gold-sheen);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
    opacity: 0.5;
    pointer-events: none;
  }

  .page-disclaimer .usage-hero .shell {
    padding-inline-end: clamp(140px, 18vw, 240px);
  }
}

@media (min-width: 960px) {
  .page-disclaimer .usage-layout {
    grid-template-columns: minmax(0, 1fr) 88px;
    align-items: start;
  }

  .page-disclaimer .usage-spine {
    display: block;
    position: sticky;
    top: 108px;
    align-self: start;
    height: clamp(300px, 46vh, 460px);
  }

  .page-disclaimer .usage-spine__track {
    display: block;
    width: 100%;
    height: 100%;
    border-inline-end: 1px solid var(--ink-line);
    background-image: repeating-linear-gradient(
      to bottom,
      var(--gold-deep) 0 2px,
      transparent 2px 26px
    );
    background-size: 10px 100%;
    background-position: right top;
    background-repeat: no-repeat;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-tab,
  .page-disclaimer .usage-link {
    transition: none;
  }
}
<<<END>>>