.page-reports-method {
  --method-tint: color-mix(in srgb, var(--color-primary) 14%, transparent);
  --method-accent-tint: color-mix(in srgb, var(--color-accent) 18%, transparent);
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  overflow-x: clip;
}

.page-reports-method img {
  max-width: 100%;
  height: auto;
}

.page-reports-method .method-strip {
  height: calc(var(--space-1) / 2);
  background: linear-gradient(
    90deg,
    var(--color-primary) 0%,
    var(--color-accent) 48%,
    var(--color-contrast-accent) 100%
  );
}

/* ---------- 页头 ---------- */
.page-reports-method .method-masthead {
  position: relative;
  padding: var(--space-4) 0 var(--space-6);
  border-bottom: var(--border-thin) solid var(--color-line);
  background:
    linear-gradient(
      118deg,
      color-mix(in srgb, var(--color-primary) 18%, var(--color-surface)) 0%,
      color-mix(in srgb, var(--color-primary-soft) 78%, var(--color-surface)) 54%,
      color-mix(in srgb, var(--color-highlight) 72%, var(--color-surface)) 100%
    );
  overflow: hidden;
}

.page-reports-method .method-masthead::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    color-mix(in srgb, var(--color-primary) 24%, transparent) 1px,
    transparent 1px
  );
  background-size: 18px 18px;
  opacity: 0.55;
  pointer-events: none;
}

.page-reports-method .method-masthead::after {
  content: "";
  position: absolute;
  right: calc(var(--space-8) * -1);
  top: calc(var(--space-8) * -1);
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(
    circle at 34% 34%,
    color-mix(in srgb, var(--color-accent) 30%, transparent),
    transparent 68%
  );
  pointer-events: none;
}

.page-reports-method .method-masthead__inner {
  position: relative;
  z-index: 1;
}

.page-reports-method .method-version {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: var(--space-3) 0 var(--space-2);
  padding: 5px var(--space-2) 5px 5px;
  border-radius: var(--radius-pill);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
}

.page-reports-method .method-version__tag {
  padding: 3px var(--space-1);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-contrast-accent) 22%, transparent);
  color: var(--color-contrast-accent);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-reports-method .method-version__value {
  font-family: var(--font-mono);
}

.page-reports-method .method-masthead h1 {
  margin: 0 0 var(--space-3);
  max-width: 20ch;
  font-family: var(--font-heading);
  font-size: clamp(var(--text-3xl), 6vw, var(--text-4xl));
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-reports-method .method-lede {
  max-width: var(--measure);
  margin: 0;
  color: var(--color-ink-soft);
}

.page-reports-method .method-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
}

.page-reports-method .method-facts li {
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid var(--glass-edge);
  border-radius: var(--radius-md);
  background: var(--glass-bg-strong);
  box-shadow: var(--shadow-1);
}

.page-reports-method .method-facts__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
  color: var(--color-accent);
}

.page-reports-method .method-facts__label {
  display: block;
  margin-top: 4px;
  font-size: var(--text-xs);
  line-height: 1.55;
  color: var(--color-ink-muted);
}

/* ---------- 通用区块头 ---------- */
.page-reports-method .section-head {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.page-reports-method .method-fields .figure-frame,
.page-reports-method .method-figure,
.page-reports-method .revision-figure {
  margin: 0;
}

/* ---------- 适用范围 ---------- */
.page-reports-method .method-split {
  display: grid;
  gap: var(--space-4);
  align-items: start;
}

.page-reports-method .method-split__body h2 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-reports-method .method-split__body .lede {
  margin: 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-reports-method .scope-pair {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.page-reports-method .scope-box {
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-top: calc(var(--border-thin) * 3) solid var(--color-accent);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--color-primary-soft) 42%, var(--color-surface));
}

.page-reports-method .scope-box--out {
  border-top-color: var(--color-ink-muted);
  background: var(--color-surface-deep);
}

.page-reports-method .scope-box h3 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.3;
}

.page-reports-method .scope-box ul {
  margin: 0;
  padding-left: 1.15em;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-reports-method .scope-box li {
  margin-bottom: 6px;
}

.page-reports-method .scope-box li:last-child {
  margin-bottom: 0;
}

/* ---------- 字段定义 ---------- */
.page-reports-method .method-diagram {
  margin-bottom: var(--space-4);
}

.page-reports-method .field-index {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
}

.page-reports-method .field-index__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-reports-method .field-index ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-reports-method .field-index a {
  display: inline-block;
  padding: 3px var(--space-2);
  border: var(--border-thin) dashed var(--color-line);
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  color: var(--color-primary);
  text-decoration: none;
}

.page-reports-method .field-index a:hover,
.page-reports-method .field-index a:focus-visible {
  background: var(--color-highlight);
  border-style: solid;
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.page-reports-method .field-list {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.page-reports-method .field {
  scroll-margin-top: var(--space-8);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--glass-bg-strong);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

.page-reports-method .field:target {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 calc(var(--border-thin) * 2) var(--method-accent-tint), var(--shadow-2);
}

.page-reports-method .field__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "key name toggle"
    "unit unit unit";
  align-items: center;
  gap: 4px var(--space-2);
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
  list-style: none;
}

.page-reports-method .field__head::-webkit-details-marker {
  display: none;
}

.page-reports-method .field__head::marker {
  content: "";
}

.page-reports-method .field__key {
  grid-area: key;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.page-reports-method .field__name {
  grid-area: name;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.3;
  color: var(--color-ink);
}

.page-reports-method .field__unit {
  grid-area: unit;
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--color-ink-muted);
}

.page-reports-method .field__toggle {
  grid-area: toggle;
  position: relative;
  width: 22px;
  height: 22px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: 50%;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.page-reports-method .field__toggle::before,
.page-reports-method .field__toggle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--color-primary);
  transition: transform 160ms ease, background-color 160ms ease;
}

.page-reports-method .field__toggle::before {
  width: 10px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}

.page-reports-method .field__toggle::after {
  width: 1.5px;
  height: 10px;
  transform: translate(-50%, -50%);
}

.page-reports-method .field[open] .field__toggle {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.page-reports-method .field[open] .field__toggle::before,
.page-reports-method .field[open] .field__toggle::after {
  background: var(--color-accent-ink);
}

.page-reports-method .field[open] .field__toggle::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-reports-method .field__body {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-3);
  border-top: var(--border-thin) dashed var(--color-line);
  background: color-mix(in srgb, var(--color-primary-soft) 30%, transparent);
}

.page-reports-method .field__col-title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-reports-method .field__col p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

.page-reports-method .field__reading {
  margin: 0 0 var(--space-1) !important;
  font-family: var(--font-mono);
  font-size: var(--text-base) !important;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  line-height: 1.5 !important;
  color: var(--color-accent) !important;
}

/* ---------- 样本区间 ---------- */
.page-reports-method .interval-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-reports-method .interval-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: var(--border-thin) dashed var(--color-line);
}

.page-reports-method .interval-list li:first-child {
  border-top: var(--border-thin) dashed var(--color-line);
}

.page-reports-method .interval-list__index {
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.page-reports-method .interval-list h3 {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.35;
}

.page-reports-method .interval-list p {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

/* ---------- 修订 ---------- */
.page-reports-method .revision-grid {
  display: grid;
  gap: var(--space-4);
  align-items: start;
}

.page-reports-method .revision-notes h3 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.3;
}

.page-reports-method .revision-notes > p {
  margin: 0 0 var(--space-3);
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-reports-method .revision-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--border-thin) dashed var(--color-line);
}

.page-reports-method .revision-list li {
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) dashed var(--color-line);
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

.page-reports-method .revision-list strong {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

/* ---------- 误读 ---------- */
.page-reports-method .misread-list {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-reports-method .misread {
  display: grid;
  gap: var(--space-1);
  align-content: start;
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-left: calc(var(--border-thin) * 3) solid var(--color-primary);
  border-radius: var(--radius-lg);
  background: var(--glass-bg-strong);
  box-shadow: var(--shadow-1);
}

.page-reports-method .misread__index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.page-reports-method .misread__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.35;
}

.page-reports-method .misread p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

.page-reports-method .misread a,
.page-reports-method .revision-notes a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-reports-method .misread a:hover,
.page-reports-method .misread a:focus-visible {
  color: var(--color-accent);
}

/* ---------- 相邻入口 ---------- */
.page-reports-method .method-exits {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: var(--border-thin) dashed var(--color-line);
}

.page-reports-method .method-exit {
  display: grid;
  gap: 4px;
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
  text-decoration: none;
  transition: background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.page-reports-method .method-exit:hover,
.page-reports-method .method-exit:focus-visible {
  background: var(--color-highlight);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.page-reports-method .method-exit__name {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-reports-method .method-exit__note {
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-ink-muted);
}

/* ---------- 聚焦与动效 ---------- */
.page-reports-method a:focus-visible,
.page-reports-method summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-reports-method .scope-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-reports-method .method-exits {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-reports-method .method-masthead {
    padding: var(--space-6) 0 var(--space-8);
  }

  .page-reports-method .method-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-reports-method .field__head {
    grid-template-columns: auto minmax(0, 1fr) minmax(0, 1.1fr) auto;
    grid-template-areas: "key name unit toggle";
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
  }

  .page-reports-method .field__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-4);
    padding: var(--space-4);
  }
}

@media (min-width: 900px) {
  .page-reports-method .method-split {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: var(--space-6);
  }

  .page-reports-method .section-head {
    grid-template-columns: minmax(0, 26ch) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: end;
    margin-bottom: var(--space-6);
  }

  .page-reports-method .revision-grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: var(--space-6);
  }

  .page-reports-method .misread-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-reports-method .misread-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-reports-method .method-exits {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-reports-method .field__toggle,
  .page-reports-method .field__toggle::before,
  .page-reports-method .field__toggle::after,
  .page-reports-method .method-exit {
    transition: none;
  }

  .page-reports-method .method-exit:hover,
  .page-reports-method .method-exit:focus-visible {
    transform: none;
  }
}