/* ===== 使用说明页 · 作用域样式 ===== */
.page-disclaimer {
  --disc-hair: rgba(217, 210, 190, 0.24);
  --disc-hair-soft: rgba(169, 180, 216, 0.16);
  --disc-ink: rgba(243, 239, 226, 0.92);
  --disc-panel: rgba(243, 239, 226, 0.04);
  --disc-code: rgba(11, 16, 48, 0.78);

  position: relative;
  padding-bottom: clamp(48px, 8vw, 104px);
  background:
    radial-gradient(120% 55% at 8% -8%, rgba(27, 42, 107, 0.88), rgba(11, 16, 48, 0) 62%),
    radial-gradient(75% 42% at 96% 4%, rgba(14, 107, 98, 0.36), rgba(11, 16, 48, 0) 70%),
    var(--night);
  color: var(--paper);
}

/* ---- 页头 ---- */
.page-disclaimer .doc-hero {
  padding: clamp(26px, 5vw, 52px) 0 clamp(6px, 1.6vw, 14px);
}

.page-disclaimer .doc-hero__grid {
  display: grid;
  gap: clamp(16px, 3vw, 28px);
}

.page-disclaimer .doc-hero__eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-disclaimer .doc-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(29px, 6.2vw, var(--step-4));
  line-height: 1.2;
  letter-spacing: 0.02em;
  max-width: 22ch;
}

.page-disclaimer .doc-hero__lede {
  margin: 0 0 12px;
  font-size: var(--step-1);
  line-height: 1.78;
  color: var(--disc-ink);
  max-width: 46ch;
}

.page-disclaimer .doc-hero .meta-line {
  color: var(--mist);
  font-size: var(--step--1);
  letter-spacing: 0.04em;
}

/* ---- 主体网格 ---- */
.page-disclaimer .doc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 32px);
  padding-top: clamp(24px, 4vw, 46px);
}

.page-disclaimer .doc-rail,
.page-disclaimer .doc-flow,
.page-disclaimer .band {
  grid-column: 1;
  min-width: 0;
}

.page-disclaimer .doc-rail {
  align-self: start;
}

.page-disclaimer .doc-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.2em;
  color: var(--mist);
}

.page-disclaimer .doc-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--disc-hair);
}

.page-disclaimer .doc-rail__link {
  display: block;
  padding: 8px 0 8px 14px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--mist);
  text-decoration: none;
  font-size: var(--step--1);
  line-height: 1.5;
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.page-disclaimer .doc-rail__link:hover,
.page-disclaimer .doc-rail__link:focus-visible {
  color: var(--paper);
  border-left-color: var(--cyan);
  background-color: rgba(53, 240, 208, 0.07);
}

/* ---- 分节 ---- */
.page-disclaimer .doc-sec {
  padding: clamp(22px, 3.4vw, 38px) 0;
  border-top: 1px solid var(--disc-hair);
}

.page-disclaimer .doc-flow--a > .doc-sec:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-disclaimer .doc-sec__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-bottom: 16px;
}

.page-disclaimer .doc-sec__num {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-disclaimer .doc-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 3.6vw, var(--step-2));
  line-height: 1.35;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-disclaimer .doc-sec__rule {
  flex: 1 1 60px;
  min-width: 40px;
  height: 1px;
  background: linear-gradient(90deg, var(--line-strong), rgba(53, 240, 208, 0));
}

.page-disclaimer .doc-sec__body {
  color: var(--disc-ink);
  font-size: var(--step-0);
  line-height: 1.78;
}

.page-disclaimer .doc-sec__body p {
  margin: 0 0 14px;
  max-width: 60ch;
}

.page-disclaimer .doc-sec__body p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .doc-sec__body a,
.page-disclaimer .spec__val a,
.page-disclaimer .notice p a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 208, 0.4);
  transition: border-color 160ms ease, color 160ms ease;
}

.page-disclaimer .doc-sec__body a:hover,
.page-disclaimer .spec__val a:hover,
.page-disclaimer .notice p a:hover {
  color: var(--warm);
  border-bottom-color: var(--warm);
}

/* ---- 条目式清单 ---- */
.page-disclaimer .spec {
  margin-top: 18px;
  border-top: 1px solid var(--disc-hair-soft);
}

.page-disclaimer .spec__row {
  display: grid;
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px solid var(--disc-hair-soft);
}

.page-disclaimer .spec__key {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.08em;
  color: var(--sign);
  text-shadow: 0 0 12px rgba(53, 240, 208, 0.22);
  color: var(--cyan);
}

.page-disclaimer .spec__val {
  color: var(--disc-ink);
  font-size: var(--step--1);
  line-height: 1.72;
  overflow-wrap: anywhere;
}

/* ---- 提示块 ---- */
.page-disclaimer .notice {
  margin-top: 20px;
  padding: 15px 18px;
  border: 1px solid var(--disc-hair);
  border-left: 2px solid var(--orange);
  background-color: var(--disc-panel);
}

.page-disclaimer .notice__label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-disclaimer .notice p {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.72;
  color: var(--disc-ink);
}

/* ---- 署名示例 ---- */
.page-disclaimer .cite {
  margin: 20px 0;
  border: 1px solid var(--disc-hair);
  background-color: var(--disc-code);
}

.page-disclaimer .cite__head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 16px;
  border-bottom: 1px dashed var(--disc-hair-soft);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-disclaimer .cite__code {
  margin: 0;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  line-height: 1.9;
  color: var(--warm);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

/* ---- 中部宽幅分隔带 ---- */
.page-disclaimer .band {
  margin: clamp(10px, 2vw, 22px) 0;
}

.page-disclaimer .band .media-frame {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--disc-hair);
  background:
    linear-gradient(135deg, rgba(27, 42, 107, 0.55), rgba(14, 107, 98, 0.28) 55%, rgba(243, 239, 226, 0.06));
}

.page-disclaimer .band .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-disclaimer .band .media-frame__caption {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--disc-hair-soft);
  font-size: var(--step--1);
  line-height: 1.6;
  color: var(--mist);
  background-color: rgba(11, 16, 48, 0.55);
}

/* ---- 页尾动作区 ---- */
.page-disclaimer .doc-foot {
  margin-top: clamp(26px, 4vw, 44px);
  padding-top: clamp(18px, 3vw, 30px);
  border-top: 1px solid var(--disc-hair);
}

.page-disclaimer .doc-foot__note {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: var(--step-1);
  line-height: 1.6;
  color: var(--paper);
  max-width: 34ch;
}

.page-disclaimer .doc-foot__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---- 平板与桌面 ---- */
@media (min-width: 700px) {
  .page-disclaimer .spec__row {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .doc-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: end;
    gap: clamp(28px, 4.5vw, 64px);
  }

  .page-disclaimer .doc-hero__aside {
    padding-bottom: 4px;
  }
}

@media (min-width: 1000px) {
  .page-disclaimer .doc-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    column-gap: clamp(32px, 5vw, 72px);
    row-gap: clamp(26px, 3.6vw, 52px);
  }

  .page-disclaimer .doc-rail {
    grid-column: 1;
    grid-row: 1 / span 3;
    position: sticky;
    top: 92px;
  }

  .page-disclaimer .doc-flow--a {
    grid-column: 2;
    grid-row: 1;
  }

  .page-disclaimer .band {
    grid-column: 2;
    grid-row: 2;
    margin: 0;
  }

  .page-disclaimer .doc-flow--b {
    grid-column: 2;
    grid-row: 3;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .doc-rail__link {
    transition: none;
  }
}
<<<END>>>