.page-disclaimer {
  --uc-hair: rgba(16, 27, 51, 0.14);
  --uc-hair-soft: rgba(16, 27, 51, 0.08);
  --uc-sand-wash: rgba(216, 203, 184, 0.42);
  --uc-glass: rgba(244, 239, 230, 0.09);
  background: var(--paper);
  color: var(--ink);
}

.page-disclaimer .crumbs {
  padding: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-disclaimer a {
  color: var(--mist);
  text-decoration-color: rgba(45, 79, 108, 0.35);
  text-underline-offset: 3px;
}

.page-disclaimer a:hover {
  color: var(--orange);
}

.page-disclaimer a:focus-visible,
.page-disclaimer .use-card:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

/* ---------- 首屏框景 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  margin-top: 18px;
  padding: 36px 0 44px;
  overflow: hidden;
  color: var(--paper);
  background:
    radial-gradient(115% 95% at 6% 0%, rgba(45, 79, 108, 0.9) 0%, rgba(16, 27, 51, 0) 62%),
    linear-gradient(158deg, var(--indigo) 0%, var(--indigo-2) 58%, #17263f 100%);
}

.page-disclaimer .usage-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(244, 239, 230, 0.055) 0 1px,
    transparent 1px 64px
  );
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange) 0%, var(--brick) 38%, rgba(217, 203, 184, 0) 100%);
}

.page-disclaimer .usage-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
}

.page-disclaimer .usage-hero__eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange-soft);
}

.page-disclaimer .usage-hero__eyebrow .num {
  padding: 3px 8px;
  border: 1px solid rgba(242, 162, 92, 0.5);
  color: var(--orange-soft);
}

.page-disclaimer .usage-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(27px, 5.6vw, 50px);
  line-height: 1.22;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-disclaimer .usage-hero__lede {
  margin: 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  color: rgba(244, 239, 230, 0.86);
}

.page-disclaimer .usage-hero__meta {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--uc-glass);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: rgba(244, 239, 230, 0.62);
}

.page-disclaimer .usage-hero__meta .num {
  margin-right: 8px;
  color: var(--orange-soft);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.page-disclaimer .usage-hero__media {
  margin: 0;
  border: 1px solid rgba(244, 239, 230, 0.22);
  background: var(--uc-glass);
  padding: 6px;
}

.page-disclaimer .usage-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 章节通用 ---------- */
.page-disclaimer .usage-sec {
  padding: 44px 0 48px;
  border-top: 1px solid var(--uc-hair-soft);
}

.page-disclaimer .usage-sec--sand {
  background: linear-gradient(180deg, var(--uc-sand-wash) 0%, rgba(216, 203, 184, 0.18) 100%);
  border-top-color: rgba(16, 27, 51, 0.1);
  border-bottom: 1px solid rgba(16, 27, 51, 0.1);
}

.page-disclaimer .usage-sec__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 3.2vw, 31px);
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-disclaimer .usage-sec__lead {
  margin: 0 0 22px;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  color: rgba(10, 16, 32, 0.82);
}

.page-disclaimer .usage-block {
  display: grid;
  gap: 14px;
}

.page-disclaimer .usage-block__num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.08em;
  color: var(--orange);
}

/* ---------- 三类用法流程条 ---------- */
.page-disclaimer .usage-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-disclaimer .usage-step {
  padding: 18px 0 20px 16px;
  border-left: 3px solid var(--steel);
  background: rgba(244, 239, 230, 0.7);
}

.page-disclaimer .usage-step--go {
  border-left-color: var(--orange);
}

.page-disclaimer .usage-step--ask {
  border-left-color: var(--brick);
}

.page-disclaimer .usage-step--no {
  border-left-color: var(--steel);
}

.page-disclaimer .usage-step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-disclaimer .usage-step--go .usage-step__num {
  color: var(--orange);
}

.page-disclaimer .usage-step--ask .usage-step__num {
  color: var(--brick);
}

.page-disclaimer .usage-step__title {
  margin: 8px 0 8px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-disclaimer .usage-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(10, 16, 32, 0.78);
}

/* ---------- 条款列表 ---------- */
.page-disclaimer .use-list {
  margin: 0 0 4px;
  padding: 0;
  list-style: none;
}

.page-disclaimer .use-list li {
  position: relative;
  padding: 0 0 14px 20px;
  font-size: 16px;
  line-height: 1.88;
  letter-spacing: 0.02em;
  color: rgba(10, 16, 32, 0.84);
}

.page-disclaimer .use-list li:last-child {
  padding-bottom: 0;
}

.page-disclaimer .use-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.82em;
  width: 9px;
  height: 2px;
  background: var(--orange);
}

.page-disclaimer .use-list strong {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--ink);
}

.page-disclaimer .use-list--tight li {
  font-size: 15px;
  padding-bottom: 12px;
}

/* ---------- 引用三卡 ---------- */
.page-disclaimer .use-cards {
  display: grid;
  gap: 14px;
  margin-bottom: 22px;
}

.page-disclaimer .use-card {
  padding: 18px 18px 20px;
  background: var(--paper);
  border: 1px solid var(--uc-hair);
  border-top: 3px solid var(--orange);
}

.page-disclaimer .use-card--ask {
  border-top-color: var(--brick);
}

.page-disclaimer .use-card--no {
  border-top-color: var(--steel);
}

.page-disclaimer .use-card__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-disclaimer .use-card--go .use-card__k {
  color: var(--orange);
}

.page-disclaimer .use-card--ask .use-card__k {
  color: var(--brick);
}

.page-disclaimer .use-card__t {
  margin: 8px 0 10px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.45;
  color: var(--indigo);
}

.page-disclaimer .use-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(10, 16, 32, 0.78);
}

/* ---------- 引用示例 ---------- */
.page-disclaimer .use-sample {
  padding: 18px 18px 16px;
  border-left: 3px solid var(--brick);
  background: rgba(244, 239, 230, 0.86);
}

.page-disclaimer .use-sample__text {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--indigo);
}

.page-disclaimer .use-sample__src {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--steel);
}

/* ---------- 补充说明与外链标记 ---------- */
.page-disclaimer .usage-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--uc-hair);
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-disclaimer .use-ext {
  display: inline-block;
  width: 0.9em;
  height: 0.9em;
  margin-left: 4px;
  vertical-align: -1px;
  border: 1px solid var(--brick);
  position: relative;
}

.page-disclaimer .use-ext::after {
  content: "";
  position: absolute;
  top: 1px;
  right: 1px;
  width: 5px;
  height: 5px;
  border-top: 1.5px solid var(--brick);
  border-right: 1.5px solid var(--brick);
}

.page-disclaimer .use-list--ext li {
  padding-bottom: 16px;
}

/* ---------- 联系区 ---------- */
.page-disclaimer .usage-sec--contact {
  padding-bottom: 60px;
}

.page-disclaimer .usage-contact {
  display: grid;
  gap: 5px;
  border: 1px solid var(--uc-hair);
  background: rgba(216, 203, 184, 0.34);
}

.page-disclaimer .usage-contact__main {
  padding: 26px 20px 24px;
  border-bottom: 1px solid var(--uc-hair-soft);
}

.page-disclaimer .usage-contact__lead {
  margin: 0 0 18px;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.88;
  color: rgba(10, 16, 32, 0.8);
}

.page-disclaimer .usage-contact__mail,
.page-disclaimer .usage-contact__tel {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.03em;
  word-break: break-word;
  color: var(--indigo);
}

.page-disclaimer .usage-contact__mail .num,
.page-disclaimer .usage-contact__tel .num {
  display: inline-block;
  min-width: 62px;
  margin-right: 6px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--brick);
}

.page-disclaimer .usage-contact__side {
  padding: 24px 20px 26px;
  background: rgba(244, 239, 230, 0.72);
}

.page-disclaimer .usage-contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 0;
}

.page-disclaimer .usage-contact__links .btn {
  border-radius: 0;
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 700px) {
  .page-disclaimer .use-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-disclaimer .usage-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    border-top: 1px solid var(--uc-hair);
  }

  .page-disclaimer .usage-step {
    padding: 22px 24px 24px 0;
    border-left: 0;
    border-top: 3px solid var(--steel);
    background: transparent;
  }

  .page-disclaimer .usage-step:nth-child(2) {
    padding-left: 24px;
  }

  .page-disclaimer .usage-step--go {
    border-top-color: var(--orange);
  }

  .page-disclaimer .usage-step--ask {
    border-top-color: var(--brick);
  }

  .page-disclaimer .usage-contact {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-disclaimer .usage-contact__main {
    border-bottom: 0;
    border-right: 1px solid var(--uc-hair-soft);
    padding: 32px 28px 30px;
  }

  .page-disclaimer .usage-contact__side {
    padding: 32px 26px 30px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-disclaimer .usage-hero {
    padding: 52px 0 56px;
  }

  .page-disclaimer .usage-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
    gap: 52px;
  }

  .page-disclaimer .usage-block {
    grid-template-columns: 96px minmax(0, 1fr);
    column-gap: 28px;
  }

  .page-disclaimer .usage-block__num {
    position: sticky;
    top: 24px;
    align-self: start;
    font-size: 38px;
  }

  .page-disclaimer .usage-sec {
    padding: 56px 0 60px;
  }

  .page-disclaimer .use-sample {
    padding: 22px 26px 20px;
  }
}

@media (min-width: 1100px) {
  .page-disclaimer .usage-hero__media {
    padding: 8px;
  }
}

/* ---------- 打印 ---------- */
@media print {
  .page-disclaimer .usage-hero {
    background: none;
    color: var(--ink);
    padding: 0 0 18px;
  }

  .page-disclaimer .usage-hero::before,
  .page-disclaimer .usage-hero::after {
    display: none;
  }

  .page-disclaimer .usage-hero h1,
  .page-disclaimer .usage-hero__lede,
  .page-disclaimer .usage-hero__meta {
    color: var(--ink);
  }

  .page-disclaimer .usage-hero__media,
  .page-disclaimer .usage-contact__links {
    display: none;
  }

  .page-disclaimer .usage-sec,
  .page-disclaimer .usage-contact {
    page-break-inside: avoid;
    background: none;
    border-color: #999;
  }

  .page-disclaimer .usage-block__num,
  .page-disclaimer .usage-step__num,
  .page-disclaimer .usage-sec__title {
    color: #000;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer [data-reveal] {
    transition: none;
    transform: none;
    opacity: 1;
  }
}
<<<END>>>