/* This article owns its typography and figures; the site theme stays unchanged. */
#main.drift-article {
  --drift-ink: #25312f;
  --drift-muted: #626b66;
  --drift-teal: #176b65;
  --drift-rust: #b25335;
  --drift-paper: #fffdf8;
  --drift-line: #dddeda;
  box-sizing: border-box;
  max-width: 1000px;
  margin: 0 auto;
  padding: 64px 48px 88px;
  color: var(--drift-ink);
  background: var(--drift-paper);
  animation: none;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.95;
  -webkit-font-smoothing: antialiased;
}

.drift-article .drift-prose {
  max-width: 860px;
  min-width: 0;
  margin: 0 auto;
  overflow-wrap: anywhere;
}

.drift-article *,
.drift-article *::before,
.drift-article *::after {
  box-sizing: border-box;
}

.drift-prose h1,
.drift-prose h2,
.drift-prose h3 {
  color: var(--drift-ink);
  font-family: inherit;
  font-weight: 650;
  text-wrap: balance;
  scroll-margin-top: 32px;
}

.drift-prose h1 {
  max-width: 830px;
  margin: 12px 0 22px;
  font-size: clamp(30px, 4.8vw, 47px);
  line-height: 1.35;
  letter-spacing: -0.025em;
}

.drift-prose h2 {
  margin: 2.65em 0 0.8em;
  padding-top: 0.95em;
  border-top: 1px solid var(--drift-line);
  font-size: 1.5em;
  line-height: 1.5;
  letter-spacing: -0.018em;
}

.drift-prose h3 {
  margin: 1.9em 0 0.65em;
  font-size: 1.14em;
  line-height: 1.65;
}

.drift-prose p {
  margin: 0 0 1.2em;
}

.drift-prose a {
  color: var(--drift-teal);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.drift-prose a:hover {
  color: #104c48;
}

.drift-prose a:focus-visible,
.drift-prose input:focus-visible {
  outline: 2px solid var(--drift-teal);
  outline-offset: 4px;
}

.drift-prose strong {
  font-weight: 650;
}

.drift-prose ul,
.drift-prose ol {
  margin: 0 0 1.35em;
  padding-left: 1.6em;
}

.drift-prose li {
  margin-bottom: 0.45em;
}

.drift-prose li > p {
  margin-bottom: 0.45em;
}

.drift-prose .drift-kicker {
  margin: 0;
  color: var(--drift-teal);
  font-size: 0.71em;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.drift-prose .drift-deck {
  max-width: 750px;
  margin-bottom: 1.3em;
  color: #58635d;
  font-size: 1.09em;
  line-height: 1.85;
}

.drift-prose .drift-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 20px;
  margin-bottom: 36px;
  color: var(--drift-muted);
  font-size: 0.75em;
  line-height: 1.65;
}

.drift-prose .drift-toc {
  margin: 30px 0 38px;
  padding: 20px 26px;
  border-top: 1px solid var(--drift-line);
  border-bottom: 1px solid var(--drift-line);
  background: #f6f5ef;
  font-size: 0.85em;
  line-height: 1.8;
}

.drift-prose .drift-toc ul {
  margin-bottom: 0;
}

.drift-prose .drift-toc li {
  margin: 0.3em 0;
}

.drift-prose .drift-callout,
.drift-prose .drift-note {
  margin: 1.7em 0;
  padding: 20px 24px;
  border-left: 3px solid var(--drift-teal);
  background: #eef5ef;
  font-size: 0.94em;
}

.drift-prose .drift-note {
  border-left-color: #bb8467;
  background: #f8f1e8;
  color: #665342;
  font-size: 0.85em;
}

.drift-prose .drift-callout > :first-child,
.drift-prose .drift-note > :first-child {
  margin-top: 0;
}

.drift-prose .drift-callout > :last-child,
.drift-prose .drift-note > :last-child {
  margin-bottom: 0;
}

.drift-prose .drift-table-wrap {
  width: 100%;
  max-width: 100%;
  margin: 1.6em 0;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  -webkit-overflow-scrolling: touch;
}

.drift-prose table {
  display: table;
  width: 100%;
  margin: 0;
  border-collapse: collapse;
  font-size: 0.81em;
  line-height: 1.85;
}

.drift-prose .drift-table-wrap table {
  min-width: 660px;
}

.drift-prose th,
.drift-prose td {
  padding: 14px 14px;
  border-bottom: 1px solid var(--drift-line);
  text-align: left;
  vertical-align: top;
}

.drift-prose th {
  border-top: 1px solid #a6b7af;
  border-bottom: 1px solid #a6b7af;
  background: #f0f3ec;
  font-weight: 650;
}

.drift-prose td:first-child {
  min-width: 110px;
  font-weight: 600;
}

.drift-prose .drift-loop-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 28px 0;
}

.drift-prose .drift-loop {
  min-width: 0;
  padding: 21px 23px;
  border: 1px solid #cedbd3;
  border-radius: 6px;
  background: #f3f7f0;
}

.drift-prose .drift-loop:nth-child(2) {
  border-color: #e4d7c9;
  background: #fbf3e9;
}

.drift-prose .drift-loop-label {
  display: block;
  margin-bottom: 12px;
  color: var(--drift-teal);
  font-size: 0.77em;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.drift-prose .drift-loop:nth-child(2) .drift-loop-label {
  color: #97512f;
}

.drift-prose .drift-loop-path {
  margin: 0;
  font-size: 0.9em;
  line-height: 1.95;
}

.drift-prose .drift-loop > :last-child {
  margin-bottom: 0;
}

.drift-prose .drift-lab {
  display: block;
  width: 100%;
  margin: 32px 0;
  padding: 24px 26px 20px;
  border: 1px solid #cfd9d1;
  border-radius: 8px;
  background: #fcfcf6;
}

.drift-prose .drift-lab > figcaption {
  margin: 12px 0 0;
  color: var(--drift-muted);
  font-family: inherit;
  font-size: 0.75em;
  line-height: 1.75;
}

.drift-prose .drift-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 15px 28px;
  margin: 0 0 16px;
}

.drift-prose .drift-lab label {
  display: block;
  margin: 0;
  color: #485a51;
  font-size: 0.8em;
  font-weight: 500;
}

.drift-prose .drift-lab output {
  display: inline-block;
  min-width: 3.6em;
  margin-left: 0.2em;
  color: var(--drift-teal);
  font-variant-numeric: tabular-nums;
  font-weight: 650;
}

.drift-prose .drift-lab input[type="range"] {
  display: block;
  width: 100%;
  min-width: 0;
  height: 28px;
  margin: 7px 0 0;
  padding: 0;
  border: none;
  background: transparent;
  box-shadow: none;
  accent-color: var(--drift-teal);
  cursor: pointer;
}

.drift-prose #drift-chart {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  overflow: hidden;
  font-family: inherit;
  font-size: 12px;
}

.drift-prose .drift-chart-grid {
  stroke: #dfe5dc;
  stroke-width: 1;
}

.drift-prose .drift-chart-tick,
.drift-prose .drift-chart-axis {
  fill: #627169;
}

.drift-prose .drift-chart-legend {
  fill: #384c40;
  font-size: 13px;
}

.drift-prose .drift-chart-raw,
.drift-prose .drift-chart-centered {
  fill: none;
  stroke: var(--drift-rust);
  stroke-width: 2.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.drift-prose .drift-chart-centered {
  stroke: var(--drift-teal);
  stroke-dasharray: 7 5;
}

.drift-prose #drift-lab-summary {
  min-height: 3.8em;
  margin: 8px 0 0;
  color: #536158;
  font-size: 0.79em;
  line-height: 1.85;
  font-variant-numeric: tabular-nums;
}

.drift-prose .MathJax_Display,
.drift-prose .MJXc-display {
  max-width: 100%;
  margin: 1.4em 0 !important;
  padding: 5px 0;
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior-x: contain;
}

.drift-prose .drift-references {
  color: var(--drift-muted);
  font-size: 0.8em;
  line-height: 1.9;
}

@media (max-width: 680px) {
  #main.drift-article {
    padding: 34px 22px 56px;
    font-size: 16px;
    line-height: 1.95;
  }

  .drift-prose h1 {
    font-size: 31px;
    line-height: 1.43;
  }

  .drift-prose h2 {
    font-size: 1.35em;
  }

  .drift-prose .drift-deck {
    font-size: 1em;
  }

  .drift-prose .drift-loop-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .drift-prose .drift-toc,
  .drift-prose .drift-callout,
  .drift-prose .drift-note {
    padding: 16px 18px;
  }

  .drift-prose .drift-lab {
    padding: 18px 14px 16px;
  }

  .drift-prose .drift-controls {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .drift-prose #drift-chart {
    min-height: 160px;
  }

  .drift-prose .drift-chart-tick {
    font-size: 22px;
  }

  .drift-prose .drift-chart-axis {
    font-size: 18px;
  }

  .drift-prose .drift-chart-legend {
    font-size: 20px;
  }

  .drift-prose .MathJax_Display,
  .drift-prose .MJXc-display {
    font-size: 0.86em;
  }
}

@media print {
  #main.drift-article {
    max-width: none;
    padding: 0;
    background: #fff;
    color: #111;
    font-size: 11pt;
  }

  .drift-prose .drift-lab,
  .drift-prose .drift-loop,
  .drift-prose .drift-callout {
    break-inside: avoid;
  }

  .drift-prose .drift-controls {
    display: none;
  }

  .drift-prose .drift-table-wrap {
    overflow: visible;
  }

  .drift-prose .drift-table-wrap table {
    min-width: 0;
  }
}