.page-disclaimer {
  --instr-hair: rgba(30, 58, 86, .62);
  --instr-hair-ink: rgba(36, 26, 20, .16);
  background: var(--night);
  color: var(--cream);
}

/* 首屏 */
.page-disclaimer .instr-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 56px) 0 clamp(30px, 4.5vw, 54px);
  background: linear-gradient(158deg, var(--ink-deep) 0%, var(--night) 52%, #123049 100%);
  border-bottom: 1px solid var(--edge);
}

.page-disclaimer .instr-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -70%;
  width: min(560px, 70%);
  height: 340px;
  background: radial-gradient(circle at 40% 40%, rgba(63, 224, 200, .16), transparent 64%);
  pointer-events: none;
}

.page-disclaimer .instr-crumb .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 clamp(16px, 3vw, 26px);
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
}

.page-disclaimer .instr-crumb .breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--slate);
}

.page-disclaimer .instr-crumb .breadcrumb li + li::before {
  content: "/";
  color: rgba(143, 163, 184, .45);
}

.page-disclaimer .instr-crumb .breadcrumb a {
  color: var(--cyan);
  text-decoration: none;
}

.page-disclaimer .instr-crumb .breadcrumb a:hover,
.page-disclaimer .instr-crumb .breadcrumb a:focus-visible {
  color: var(--orange);
}

.page-disclaimer .instr-plate {
  margin: 0 0 16px;
}

.page-disclaimer .instr-title {
  max-width: 20em;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.95rem, 5.4vw, 3.7rem);
  line-height: 1.08;
  letter-spacing: .01em;
}

.page-disclaimer .instr-lead {
  max-width: var(--reading);
  margin: clamp(16px, 2.6vw, 24px) 0 0;
  font-family: var(--font-body);
  font-size: clamp(.96rem, 1.5vw, 1.06rem);
  line-height: 1.85;
  color: rgba(245, 239, 227, .84);
}

.page-disclaimer .instr-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px clamp(18px, 3vw, 34px);
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(245, 239, 227, .78);
}

.page-disclaimer .instr-facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--edge);
}

.page-disclaimer .instr-facts .mono {
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan);
}

/* 三步上手 */
.page-disclaimer .instr-steps-section {
  padding: clamp(28px, 4.5vw, 56px) 0 clamp(32px, 5vw, 64px);
  background: var(--night);
}

.page-disclaimer .instr-steps-layout {
  display: grid;
  gap: clamp(22px, 4vw, 42px);
}

.page-disclaimer .instr-h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.4rem, 3.2vw, 2rem);
  line-height: 1.2;
  color: var(--cream);
}

.page-disclaimer .instr-sub {
  margin: 10px 0 0;
  font-size: .92rem;
  line-height: 1.7;
  color: rgba(245, 239, 227, .66);
}

.page-disclaimer .instr-step-list {
  display: grid;
  gap: 12px;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .instr-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 16px 18px;
  border: 1px solid var(--edge);
  background: rgba(6, 19, 34, .68);
  box-shadow: inset 0 0 0 1px rgba(11, 34, 57, .6);
  transition: transform .18s var(--ease), border-color .18s var(--ease);
}

.page-disclaimer .instr-step:hover,
.page-disclaimer .instr-step:focus-within {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

.page-disclaimer .instr-step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--cyan);
  border: 1px solid var(--edge);
  background: rgba(63, 224, 200, .06);
}

.page-disclaimer .instr-step:first-child .instr-step-num {
  color: var(--ink-deep);
  background: var(--orange);
  border-color: var(--orange);
  font-weight: 700;
}

.page-disclaimer .instr-step-body {
  min-width: 0;
}

.page-disclaimer .instr-step-title {
  margin: 0 0 7px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: .98rem;
  letter-spacing: .01em;
  color: var(--cream);
}

.page-disclaimer .instr-step-body p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.75;
  color: rgba(245, 239, 227, .7);
}

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

.page-disclaimer .instr-figure .frame {
  aspect-ratio: 1200 / 750;
  background: var(--ink-deep);
  border: 1px solid var(--edge);
  overflow: hidden;
}

.page-disclaimer .instr-figure img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-disclaimer .instr-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  line-height: 1.7;
  color: var(--slate);
}

/* 正文画板 */
.page-disclaimer .instr-body {
  background: var(--cream);
  color: var(--brown);
  padding: clamp(26px, 4.5vw, 58px) 0 clamp(40px, 6vw, 76px);
}

.page-disclaimer .instr-shell {
  display: grid;
  gap: clamp(22px, 3.6vw, 40px);
}

.page-disclaimer .instr-toc {
  border: 1px solid var(--instr-hair-ink);
  background: rgba(36, 26, 20, .035);
  padding: 14px 16px 16px;
}

.page-disclaimer .toc-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--burnt);
}

.page-disclaimer .toc-list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-disclaimer .toc-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 10px;
  font-size: .84rem;
  line-height: 1.4;
  white-space: nowrap;
  color: #4a3b31;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}

.page-disclaimer .toc-link .mono {
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--teal);
}

.page-disclaimer .toc-link:hover,
.page-disclaimer .toc-link:focus-visible {
  color: var(--brown);
  background: rgba(242, 101, 34, .08);
}

.page-disclaimer .toc-link[aria-current="location"] {
  color: var(--brown);
  font-weight: 600;
  border-left-color: var(--orange);
  background: rgba(242, 101, 34, .12);
}

.page-disclaimer .chapter {
  display: grid;
  gap: 8px;
  padding: clamp(20px, 3vw, 30px) 0;
  border-top: 1px solid var(--instr-hair-ink);
}

.page-disclaimer .chapter:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-disclaimer .chapter-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--burnt);
}

.page-disclaimer .chapter:nth-child(even) .chapter-num {
  color: var(--teal);
}

.page-disclaimer .chapter-body {
  min-width: 0;
}

.page-disclaimer .chapter-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.14rem, 2.4vw, 1.5rem);
  line-height: 1.35;
  letter-spacing: .01em;
  color: var(--brown);
}

.page-disclaimer .chapter-body p {
  max-width: var(--reading);
  margin: 0 0 12px;
  font-size: .96rem;
  line-height: 1.85;
  color: #3a2d25;
}

.page-disclaimer .chapter-body a {
  color: var(--burnt);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-disclaimer .chapter-body a:hover,
.page-disclaimer .chapter-body a:focus-visible {
  color: var(--orange);
  text-decoration-thickness: 2px;
}

.page-disclaimer .instr-rules {
  display: grid;
  gap: 9px;
  max-width: var(--reading);
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
}

.page-disclaimer .instr-rules li {
  position: relative;
  padding-left: 18px;
  font-size: .93rem;
  line-height: 1.8;
  color: #3a2d25;
}

.page-disclaimer .instr-rules li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 8px;
  height: 2px;
  background: var(--orange);
}

.page-disclaimer .instr-rules strong {
  color: var(--brown);
  font-weight: 700;
}

.page-disclaimer .instr-rules-ordered {
  counter-reset: instr-ordered;
}

.page-disclaimer .instr-rules-ordered li {
  counter-increment: instr-ordered;
  padding-left: 28px;
}

.page-disclaimer .instr-rules-ordered li::before {
  content: counter(instr-ordered, decimal-leading-zero);
  top: 0;
  width: auto;
  height: auto;
  background: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--teal);
}

.page-disclaimer .code-sample {
  display: block;
  max-width: var(--reading);
  margin: 14px 0;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.75;
  letter-spacing: .01em;
  color: #cfe6e1;
  background: var(--ink-deep);
  border-left: 3px solid var(--cyan);
  overflow-x: auto;
}

.page-disclaimer .key-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  max-width: var(--reading);
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.page-disclaimer .key-row li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .84rem;
  line-height: 1.6;
  color: #5b4a3e;
}

.page-disclaimer .key {
  display: inline-block;
  min-width: 42px;
  padding: 3px 7px 4px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  text-align: center;
  color: var(--brown);
  background: #fbf7ee;
  border: 1px solid rgba(36, 26, 20, .42);
  border-bottom-width: 3px;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-disclaimer .key-row li:hover .key {
  background: #fff;
  border-color: var(--burnt);
}

.page-disclaimer .toc-link:focus-visible,
.page-disclaimer .instr-crumb .breadcrumb a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* 响应式 */
@media (min-width: 720px) {
  .page-disclaimer .chapter {
    grid-template-columns: 62px minmax(0, 1fr);
    gap: 22px;
  }

  .page-disclaimer .chapter-num {
    padding-top: .62em;
  }

  .page-disclaimer .instr-step {
    grid-template-columns: 46px minmax(0, 1fr);
    padding: 18px 20px 20px;
  }
}

@media (min-width: 980px) {
  .page-disclaimer .instr-steps-layout {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .88fr);
    align-items: start;
  }
}

@media (min-width: 1040px) {
  .page-disclaimer .instr-shell {
    grid-template-columns: minmax(0, 1fr) 268px;
    align-items: start;
  }

  .page-disclaimer .instr-chapters {
    grid-column: 1;
    grid-row: 1;
  }

  .page-disclaimer .instr-toc {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: calc(var(--header-h) + 24px);
    padding: 16px 18px 18px;
  }

  .page-disclaimer .toc-list {
    display: block;
    overflow: visible;
    padding: 0;
  }

  .page-disclaimer .toc-link {
    border-left: 2px solid transparent;
    white-space: normal;
    padding: 7px 10px;
  }
}

@media (min-width: 1240px) {
  .page-disclaimer .instr-title {
    max-width: 17em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .instr-step,
  .page-disclaimer .toc-link,
  .page-disclaimer .key {
    transition: none;
  }

  .page-disclaimer .instr-step:hover,
  .page-disclaimer .instr-step:focus-within {
    transform: none;
  }
}
<<<END>>>