:root{
      --bg: #0b1020;
      --panel: rgba(255,255,255,0.06);
      --panel2: rgba(255,255,255,0.09);
      --text: rgba(255,255,255,0.92);
      --muted: rgba(255,255,255,0.70);
      --faint: rgba(255,255,255,0.52);
      --border: rgba(255,255,255,0.14);
      --shadow: 0 12px 40px rgba(0,0,0,0.35);
      --accent: #7dd3fc;
      --accent2: #a78bfa;
      --max: 940px;
      --r: 18px;
      --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    }

    @media (prefers-color-scheme: light){
      :root{
        --bg: #f6f7fb;
        --panel: rgba(10,18,38,0.05);
        --panel2: rgba(10,18,38,0.07);
        --text: rgba(10,18,38,0.92);
        --muted: rgba(10,18,38,0.70);
        --faint: rgba(10,18,38,0.52);
        --border: rgba(10,18,38,0.12);
        --shadow: 0 14px 44px rgba(10,18,38,0.12);
        --accent: #0284c7;
        --accent2: #7c3aed;
      }
    }

    *{ box-sizing: border-box; }
    html,body{ height:100%; }

    body{
      margin:0;
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
      background:
        radial-gradient(1200px 700px at 10% 10%, rgba(125,211,252,0.20), transparent 55%),
        radial-gradient(900px 600px at 90% 15%, rgba(167,139,250,0.18), transparent 55%),
        radial-gradient(800px 500px at 40% 90%, rgba(52,211,153,0.10), transparent 55%),
        var(--bg);
      color: var(--text);
      line-height: 1.7;
    }

    a{ color: inherit; text-decoration: none; }
    a:hover{ text-decoration: underline; }

    .wrap{
      max-width: var(--max);
      margin: 0 auto;
      padding: 28px 18px 70px;
    }

    .topbar{
      display:flex;
      align-items:center;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
      margin-top: 6px;
      margin-bottom: 18px;
    }

    .chip{
      display:inline-flex;
      align-items:center;
      gap: 8px;
      padding: 10px 12px;
      border: 1px solid var(--border);
      background: var(--panel);
      border-radius: 999px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.2;
      box-shadow: 0 1px 0 rgba(255,255,255,0.04) inset;
    }
    .chip:hover{
      background: var(--panel2);
      color: var(--text);
      border-color: rgba(255,255,255,0.22);
      text-decoration: none;
    }

    .card{
      border: 1px solid var(--border);
      background: var(--panel);
      border-radius: var(--r);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .hero{
      padding: 22px 20px 18px;
      background: linear-gradient(135deg, rgba(125,211,252,0.14), rgba(167,139,250,0.10));
      border-bottom: 1px solid var(--border);
    }

    h1{
      margin: 0 0 10px;
      font-size: 34px;
      line-height: 1.15;
      letter-spacing: -0.02em;
    }

    .meta{
      display:flex;
      gap: 10px;
      flex-wrap: wrap;
      align-items: center;
      color: var(--muted);
      font-size: 14px;
      margin-top: 8px;
    }

    .pill{
      padding: 6px 10px;
      border-radius: 999px;
      border: 1px solid var(--border);
      background: rgba(255,255,255,0.05);
      color: var(--muted);
      font-size: 12px;
      white-space: nowrap;
    }

    .lede{
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 16px;
      max-width: 78ch;
    }

    .content{
      padding: 18px 20px 8px;
    }

    h2{
      margin: 30px 0 10px;
      font-size: 16px;
      letter-spacing: 0.10em;
      text-transform: uppercase;
      color: var(--muted);
    }

    h3{
      margin: 22px 0 8px;
      font-size: 16px;
      letter-spacing: -0.01em;
      color: var(--text);
    }

    p{
      margin: 0 0 16px;
      font-size: 16px;
    }

    .quote{
      margin: 16px 0 18px;
      padding: 14px 14px;
      border-left: 3px solid rgba(125,211,252,0.55);
      background: rgba(255,255,255,0.04);
      border-radius: 12px;
      color: var(--text);
    }
    .quote p{ margin: 0; color: var(--text); }

    .hr{
      height: 1px;
      background: var(--border);
      margin: 24px 0;
    }

    table{
      width: 100%;
      border-collapse: collapse;
      margin: 12px 0 18px;
      overflow: hidden;
      border-radius: 14px;
      border: 1px solid var(--border);
      background: rgba(255,255,255,0.03);
    }

    th, td{
      text-align: left;
      padding: 10px 10px;
      border-bottom: 1px solid var(--border);
      vertical-align: top;
      font-size: 14px;
    }

    th{
      color: var(--muted);
      font-weight: 800;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      font-size: 12px;
      background: rgba(255,255,255,0.04);
    }

    tr:last-child td{ border-bottom: none; }

    .mono{
      font-family: var(--mono);
      font-size: 14px;
      color: var(--text);
      background: rgba(255,255,255,0.04);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 12px 12px;
      overflow-x: auto;
      margin: 10px 0 16px;
      white-space: pre;
    }

    .math{
      background: rgba(255,255,255,0.03);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 12px 12px;
      margin: 10px 0 16px;
      overflow-x: auto;
    }

    .toc{
      margin: 18px 0 0;
      padding: 14px 14px;
      border: 1px solid var(--border);
      background: rgba(255,255,255,0.03);
      border-radius: 14px;
    }

    .tocTitle{
      margin: 0 0 10px;
      color: var(--muted);
      font-weight: 900;
      letter-spacing: 0.10em;
      text-transform: uppercase;
      font-size: 12px;
    }

    .toc a{
      display:block;
      padding: 8px 10px;
      border-radius: 10px;
      border: 1px solid transparent;
      color: var(--muted);
      font-size: 14px;
    }

    .toc a:hover{
      background: rgba(255,255,255,0.05);
      border-color: var(--border);
      color: var(--text);
      text-decoration: none;
    }

    .note{
      border: 1px solid var(--border);
      background: rgba(255,255,255,0.03);
      border-radius: 14px;
      padding: 12px 12px;
      margin: 12px 0 18px;
      color: var(--muted);
      font-size: 14px;
    }

    .twoCol{
      display:grid;
      grid-template-columns: 1fr;
      gap: 12px;
    }
    @media (min-width: 860px){
      .twoCol{ grid-template-columns: 1fr 1fr; }
    }

    .calloutLink{
      display:inline-flex;
      align-items:center;
      gap: 10px;
      padding: 10px 12px;
      border: 1px solid var(--border);
      background: rgba(255,255,255,0.04);
      border-radius: 14px;
      color: var(--text);
      font-size: 14px;
    }
    .calloutLink:hover{
      background: rgba(255,255,255,0.06);
      text-decoration: none;
    }

    footer{
      margin-top: 20px;
      padding: 14px 20px 18px;
      border-top: 1px solid var(--border);
      color: var(--faint);
      font-size: 13px;
      display:flex;
      justify-content: space-between;
      gap: 10px;
      flex-wrap: wrap;
    }


/* Sober editorial alignment, 2026-07-30 */
:root{
  --bg:#f6f7f8;
  --panel:#ffffff;
  --panel2:#eef2f4;
  --text:#171a1f;
  --muted:#5f6673;
  --faint:#7c8594;
  --border:#d9dee7;
  --shadow:none;
  --accent:#0f766e;
  --accent2:#0b4f51;
  --r:6px;
}
html,body{background:var(--bg);}
body{background:var(--bg) !important;color:var(--text);text-rendering:optimizeLegibility;}
a{color:var(--accent2);text-decoration-thickness:1px;text-underline-offset:.18em;}
a:hover{color:var(--accent);}
.wrap{padding-top:28px;}
.card,.article,.mini,.toc,.process,.math,.mono,.quote,.callout,.note,.tag{
  background:var(--panel) !important;
  border-color:var(--border) !important;
  border-radius:6px !important;
  box-shadow:none !important;
}
.hero,.articleTop{
  background:var(--panel) !important;
  border-bottom:1px solid var(--border) !important;
}
.topbar,header{border-bottom:1px solid var(--border);padding-bottom:18px;}
.chip,.btn,.pill,.badge,.tag{
  background:transparent !important;
  border-color:var(--border) !important;
  border-radius:4px !important;
  box-shadow:none !important;
  color:var(--muted) !important;
}
.chip,.btn{padding:7px 9px;}
.pill,.badge,.tag{padding:2px 0;border:0 !important;font-size:13px;}
.badge .dot{display:none;}
.meta{gap:8px 12px;}
.meta .pill + .pill::before{content:"/ ";color:var(--faint);}
.toc a{border-radius:4px !important;}
.btn.primary{background:var(--panel2) !important;border-color:var(--border) !important;color:var(--text) !important;}
h1{font-family:ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;letter-spacing:0 !important;}
h2,h3,h4{letter-spacing:0 !important;text-transform:none !important;color:var(--text) !important;}
.articleTitle,.headline{letter-spacing:0 !important;}
.previewBanner{display:none !important;}


/* Article rhythm refinement, 2026-07-30 */
body .wrap > article.card{
  background:transparent !important;
  border:0 !important;
  border-radius:0 !important;
  overflow:visible !important;
}
body .wrap > article.card > .hero{
  padding:52px 0 34px !important;
  border-bottom:1px solid var(--border) !important;
}
body .wrap > article.card > .content{
  max-width:760px;
  padding:34px 0 0 !important;
  font-size:18px;
}
body .wrap > article.card h1{
  font-size:clamp(22px,3vw,36px) !important;
  line-height:1.06 !important;
  text-wrap:balance;
}
body .wrap > article.card .lede{
  color:var(--muted);
  font-size:19px;
  line-height:1.55;
  max-width:700px;
}
body .wrap > article.card .content h2{
  margin:2.4em 0 .75em !important;
  padding-top:.7em;
  border-top:1px solid var(--border);
  font-size:27px !important;
  line-height:1.2;
}
body .wrap > article.card .content h3{
  margin:2em 0 .65em !important;
  font-size:21px !important;
  line-height:1.3;
}
body .wrap > article.card .toc{
  max-width:760px;
  margin-top:24px;
}
@media (max-width:560px){
  body .wrap > article.card h1{font-size:22px !important;line-height:1.08 !important;}
  body .wrap > article.card .lede{font-size:17px;}
  body .wrap > article.card .content{font-size:17px;}
}


/* Compact article nav, 2026-07-30 */
.topbar{justify-content:flex-start !important;}
.topbar .chip{margin-right:2px;}

button.chip.article-copy-button{appearance:none;cursor:pointer;}
.article-copy-status{align-self:center;color:var(--faint);font-size:13px;min-height:1.4em;}


/* Article page compact summary and contents, 2026-07-31 */
body .wrap > article.card > .hero{
  background:transparent !important;
  padding:34px 0 20px !important;
}
body .wrap > article.card .lede{
  background:transparent !important;
  margin-top:12px;
}
body .wrap > article.card .toc{
  background:transparent !important;
  border-left:0 !important;
  border-right:0 !important;
  border-radius:0 !important;
  margin-top:18px;
  padding:12px 0 0;
}
body .wrap > article.card .tocTitle{
  margin-bottom:6px;
}
body .wrap > article.card .toc:not(:has(ul)):not(:has(.tocList)){
  display:block;
}
@media (min-width:960px){
  body .wrap > article.card .toc:not(:has(ul)):not(:has(.tocList)){
    column-count:2;
    column-gap:28px;
  }
  body .wrap > article.card .toc:not(:has(ul)):not(:has(.tocList)) .tocTitle{
    column-span:all;
  }
}
body .wrap > article.card .tocList,
body .wrap > article.card .toc ul{
  display:block;
}
@media (min-width:960px){
  body .wrap > article.card .tocList,
  body .wrap > article.card .toc ul{
    column-count:2;
    column-gap:28px;
  }
}
body .wrap > article.card .tocList li,
body .wrap > article.card .toc li{
  margin:0;
}
body .wrap > article.card .toc a{
  padding:3px 0;
  line-height:1.28;
}
body .wrap > article.card .tocSubitem a,
body .wrap > article.card header.hero .tocList .tocSubitem a{
  padding-left:16px;
}
body .wrap > article.card .content h2{
  margin-top:2em !important;
}
body .wrap > article.card .content h3{
  margin-top:1.55em !important;
}
@media (max-width:560px){
  body .wrap > article.card > .hero{
    padding:30px 0 20px !important;
  }
  body .wrap > article.card .tocList,
  body .wrap > article.card .toc ul{
    display:block;
  }
  body .wrap > article.card .toc:not(:has(ul)):not(:has(.tocList)){
    display:block;
  }
  body .wrap > article.card .toc a{
    padding:5px 0;
    line-height:1.35;
  }
}

/* Article contents list surface, 2026-07-31 */
.toc{
  background:transparent !important;
  border:0 !important;
  padding:0 !important;
}
.tocTitle,
.toc-title{
  margin:0 0 6px !important;
}
.tocList,
.toc ul,
.toc ol,
.toc{
  border-radius:10px;
}
.toc > a,
.tocList,
.toc ul,
.toc ol{
  background:rgba(255,255,255,0.92);
  border:1px solid var(--border);
  list-style:none;
  margin:0 !important;
  overflow:hidden;
}
.toc > a{
  border-bottom:0;
}
.toc > a:last-child{
  border-bottom:1px solid var(--border);
}
.tocList,
.toc ul,
.toc ol{
  padding:0 !important;
}
.tocList{
  gap:0 !important;
}
.tocList li,
.toc li{
  break-inside:avoid;
  margin:0 !important;
}
.toc a{
  border-radius:0 !important;
  color:rgba(10,18,38,0.78);
  padding:5px 8px !important;
}
.toc a:hover{
  background:rgba(10,18,38,0.06);
  color:rgba(10,18,38,0.94);
}
.tocSubitem a,
header.hero .tocList .tocSubitem a,
.toc .level-3 a{
  padding-left:22px !important;
}
@media (prefers-color-scheme: dark){
  .toc > a,
  .tocList,
  .toc ul,
  .toc ol{
    background:rgba(255,255,255,0.94);
  }
}