.page-disclaimer {
  --ud-panel: rgba(12, 18, 32, 0.62);
  --ud-panel-2: rgba(27, 59, 111, 0.2);
  overflow-x: clip;
  padding-bottom: clamp(1.5rem, 4vw, 3rem);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  padding-block: clamp(1.4rem, 3.4vw, 2.6rem) clamp(1.6rem, 3.6vw, 2.8rem);
}

.page-disclaimer .usage-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 3rem);
  align-items: center;
}

.page-disclaimer .usage-hero__title {
  font-family: var(--font-title);
  font-size: clamp(1.85rem, 6.2vw, 3.25rem);
  line-height: 1.14;
  letter-spacing: 0.005em;
  margin: 0.7rem 0 0;
  color: var(--mist);
}

.page-disclaimer .usage-hero__title::after {
  content: "";
  display: block;
  width: 74px;
  height: 3px;
  margin-top: 1.05rem;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--gold));
}

.page-disclaimer .usage-hero__lede {
  margin-top: 1.05rem;
  max-width: 58ch;
  color: var(--fg-dim);
  line-height: 1.85;
}

.page-disclaimer .usage-hero__marks {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-disclaimer .usage-hero__marks li {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  font-size: 0.93rem;
  color: var(--fg-dim);
}

.page-disclaimer .usage-hero__mark-num {
  flex: 0 0 auto;
  width: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-disclaimer .usage-hero__media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-disclaimer .usage-hero__media .media-frame__img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */
.page-disclaimer .usage-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 3.8vw, 2.6rem);
  padding-block: clamp(1.2rem, 3vw, 2.2rem) clamp(2.6rem, 6vw, 5rem);
}

/* ---------- 轨道索引 ---------- */
.page-disclaimer .usage-rail {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 0.95rem;
  background:
    radial-gradient(140% 120% at 0% 0%, rgba(110, 74, 158, 0.18), transparent 62%),
    linear-gradient(160deg, var(--ud-panel-2), rgba(7, 10, 18, 0.62));
}

.page-disclaimer .usage-rail__title {
  margin: 0 0 0.7rem 0.15rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.page-disclaimer .usage-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0.2rem;
  display: flex;
  gap: 0.4rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-disclaimer .usage-rail__item {
  flex: 0 0 auto;
}

.page-disclaimer .usage-rail__link {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.5rem 0.7rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  color: var(--fg-dim);
  font-size: 0.85rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-disclaimer .usage-rail__link:hover,
.page-disclaimer .usage-rail__link:focus-visible {
  color: var(--mist);
  border-color: var(--line-strong);
  background-color: rgba(57, 208, 216, 0.09);
}

.page-disclaimer .usage-rail__num {
  font-family: var(--font-mono);
  font-size: 0.71rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

/* ---------- 章节 ---------- */
.page-disclaimer .usage-sections {
  display: grid;
  gap: clamp(2.2rem, 5vw, 3.6rem);
  min-width: 0;
}

.page-disclaimer .usage-section {
  min-width: 0;
  scroll-margin-top: calc(var(--bar-h) + 1.5rem);
}

.page-disclaimer .usage-head {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  padding-bottom: 0.8rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-head__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-disclaimer .usage-head__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.18rem, 3.7vw, 1.6rem);
  line-height: 1.36;
  color: var(--mist);
}

.page-disclaimer .usage-prose p {
  margin: 0 0 0.9rem;
  font-size: 0.955rem;
  line-height: 1.88;
  color: var(--fg-dim);
}

.page-disclaimer .usage-prose--after {
  margin-top: 1.3rem;
}

.page-disclaimer .usage-prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(57, 208, 216, 0.45);
}

.page-disclaimer .usage-prose a:hover {
  text-decoration-color: var(--cyan);
}

/* ---------- 提示条 ---------- */
.page-disclaimer .usage-note-list {
  list-style: none;
  margin: 1.35rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.page-disclaimer .usage-note {
  display: grid;
  gap: 0.28rem;
  padding: 0.9rem 1rem;
  border-left: 2px solid var(--moss);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background-color: rgba(111, 127, 90, 0.1);
}

.page-disclaimer .usage-note:nth-child(2) {
  border-left-color: var(--blue);
  background-color: rgba(27, 59, 111, 0.18);
}

.page-disclaimer .usage-note:nth-child(3) {
  border-left-color: var(--nebula);
  background-color: rgba(110, 74, 158, 0.15);
}

.page-disclaimer .usage-note__key {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.page-disclaimer .usage-note p {
  margin: 0;
  font-size: 0.915rem;
  line-height: 1.78;
  color: var(--fg-dim);
}

.page-disclaimer .usage-note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 步骤轨道 ---------- */
.page-disclaimer .usage-timeline {
  list-style: none;
  margin: 1.45rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.85rem;
}

.page-disclaimer .usage-timeline__item {
  position: relative;
  padding: 0.95rem 1.05rem 1rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(150deg, rgba(27, 59, 111, 0.24), rgba(7, 10, 18, 0.5));
}

.page-disclaimer .usage-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.9rem;
  bottom: 0.9rem;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(57, 208, 216, 0));
}

.page-disclaimer .usage-timeline__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-disclaimer .usage-timeline__title {
  margin: 0.35rem 0 0.35rem;
  font-family: var(--font-body);
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--mist);
}

.page-disclaimer .usage-timeline__item p {
  margin: 0;
  font-size: 0.89rem;
  line-height: 1.78;
  color: var(--fg-dim);
}

/* ---------- 编号结构 ---------- */
.page-disclaimer .usage-code {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
  margin: 1.4rem 0 0;
  padding: 0.85rem;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-md);
  background:
    radial-gradient(130% 150% at 10% 0%, rgba(110, 74, 158, 0.22), transparent 62%),
    rgba(7, 10, 18, 0.56);
}

.page-disclaimer .usage-code__seg {
  display: grid;
  gap: 0.24rem;
  padding: 0.62rem 0.4rem;
  border-radius: var(--radius-sm);
  text-align: center;
  background-color: rgba(230, 234, 242, 0.045);
}

.page-disclaimer .usage-code__digits {
  font-family: var(--font-mono);
  font-size: clamp(0.78rem, 3.1vw, 1.02rem);
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-disclaimer .usage-code__cap {
  font-size: 0.79rem;
  color: var(--fg-dim);
}

/* ---------- 事实格 ---------- */
.page-disclaimer .usage-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(136px, 1fr));
  gap: 0.7rem;
  margin: 1.25rem 0 0;
}

.page-disclaimer .usage-fact {
  display: grid;
  gap: 0.22rem;
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--ud-panel);
}

.page-disclaimer .usage-fact__num {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-disclaimer .usage-fact__label {
  font-size: 0.8rem;
  color: var(--fg-faint);
}

/* ---------- 折叠块 ---------- */
.page-disclaimer .usage-fold {
  margin-top: 1.3rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background-color: var(--ud-panel);
  overflow: hidden;
}

.page-disclaimer .usage-fold + .usage-fold {
  margin-top: 0.7rem;
}

.page-disclaimer .usage-fold__summary {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.88rem 1.05rem;
  cursor: pointer;
  list-style: none;
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--mist);
  transition: background-color 0.25s var(--ease);
}

.page-disclaimer .usage-fold__summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer .usage-fold__summary:hover {
  background-color: rgba(57, 208, 216, 0.06);
}

.page-disclaimer .usage-fold__summary::after {
  content: "";
  flex: 0 0 auto;
  margin-left: auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.28s var(--ease);
}

.page-disclaimer .usage-fold[open] .usage-fold__summary::after {
  transform: rotate(-135deg);
}

.page-disclaimer .usage-fold[open] .usage-fold__summary {
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-fold__body {
  padding: 0.95rem 1.05rem 1.1rem;
  font-size: 0.91rem;
  line-height: 1.82;
  color: var(--fg-dim);
}

.page-disclaimer .usage-fold__body p {
  margin: 0;
}

.page-disclaimer .usage-scenes {
  margin-top: 1.1rem;
}

.page-disclaimer .usage-scenes .usage-fold:first-child {
  margin-top: 0;
}

/* ---------- 提示行 ---------- */
.page-disclaimer .usage-tip {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  margin: 1.2rem 0 0;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(57, 208, 216, 0.28);
  background-color: rgba(57, 208, 216, 0.08);
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-disclaimer .usage-tip__dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 0.55rem;
  border-radius: 50%;
  background-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(57, 208, 216, 0.16);
}

/* ---------- 米白档案块 ---------- */
.page-disclaimer .usage-archive {
  margin-top: 1.35rem;
  padding: clamp(1.05rem, 3vw, 1.6rem);
  border-radius: var(--radius-md);
  background-color: var(--paper);
  background-image: radial-gradient(rgba(26, 31, 43, 0.07) 1px, transparent 1px);
  background-size: 14px 14px;
  color: #2B2F38;
}

.page-disclaimer .usage-archive__label {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #6E6857;
}

.page-disclaimer .usage-archive p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.85;
  color: #33383F;
}

.page-disclaimer .usage-archive__list {
  margin: 0.85rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.45rem;
  font-size: 0.905rem;
  line-height: 1.78;
  color: #3B4038;
}

.page-disclaimer .usage-archive__list li::marker {
  color: #A8863A;
}

/* ---------- 联系方式 ---------- */
.page-disclaimer .usage-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.7rem;
  margin-top: 1.25rem;
}

.page-disclaimer .usage-contact__item {
  display: grid;
  gap: 0.3rem;
  padding: 0.95rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--ud-panel-2);
}

.page-disclaimer .usage-contact__key {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-disclaimer .usage-contact__val {
  font-size: 0.94rem;
  line-height: 1.6;
  color: var(--mist);
  word-break: break-word;
}

.page-disclaimer .usage-contact__val a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid rgba(230, 234, 242, 0.25);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

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

.page-disclaimer .usage-legal {
  margin: 1.5rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  line-height: 1.8;
  color: var(--fg-faint);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-disclaimer .usage-timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-disclaimer .usage-contact {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: center;
  }
  .page-disclaimer .usage-hero__copy {
    padding-left: clamp(0px, 1.6vw, 22px);
  }
}

@media (min-width: 1000px) {
  .page-disclaimer .usage-body {
    grid-template-columns: minmax(0, 216px) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.4rem);
    align-items: start;
  }
  .page-disclaimer .usage-rail {
    position: sticky;
    top: calc(var(--bar-h) + 1.4rem);
    padding: 1.05rem;
  }
  .page-disclaimer .usage-rail__list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-disclaimer .usage-rail__item {
    flex: 1 1 auto;
  }
  .page-disclaimer .usage-rail__link {
    white-space: normal;
    align-items: flex-start;
  }
  .page-disclaimer .usage-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-disclaimer .usage-code {
    padding: 1rem;
  }
}
<<<END>>>