/* ── Fonts ── */
  @font-face {
    font-family: "EB Garamond";
    src: url("/fonts/eb-garamond-roman.woff2") format("woff2");
    font-weight: 400; font-display: swap;
  }
  @font-face {
    font-family: "EB Garamond";
    src: url("/fonts/eb-garamond-italic.woff2") format("woff2");
    font-weight: 400; font-style: italic; font-display: swap;
  }
  @font-face {
    font-family: "Departure Mono";
    src: url("/fonts/DepartureMono-Regular.otf") format("opentype");
    font-weight: 400;
    font-display: swap;
  }
  @font-face {
    font-family: "JetBrains Mono";
    src: url("/fonts/jetbrains-mono-roman.woff2") format("woff2");
    font-weight: 400;
    font-display: swap;
  }
  @font-face {
    font-family: "Rubik Glitch";
    src: url("/fonts/RubikGlitch-Regular.ttf") format("truetype");
    font-weight: 400;
    font-display: swap;
  }

  :root {
    --bg: #F4EFE4;
    --card-bg: #FBF8F2;
    --text: #3A3632;
    --text-light: #8A847C;
    --text-mid: #5E5850;
    --border: #E6DED1;
    --accent: #6B8CAE;
    --accent-soft: rgba(107, 140, 174, 0.10);
    --radius: 14px;
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }
  ::selection { background: var(--accent-soft); }

  body {
    background: var(--bg);
    font-family: "EB Garamond", Georgia, serif;
    color: var(--text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
  }

  /* Paper grain texture */
  body::before {
    content: "";
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none; z-index: 9999;
    opacity: 0.04;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='5' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 300px 300px;
    mix-blend-mode: multiply;
  }

  /* ═══════ Header ═══════ */
  .site-header {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 56px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .site-logo {
    font-family: "Rubik Glitch", monospace;
    font-size: 1.5rem;
    letter-spacing: 0.18em;
    color: #2F2B26;
    text-decoration: none;
    transform: scaleY(0.9) scaleX(0.95);
    display: inline-block;
    text-shadow: 3px 2px 0 rgba(170,130,90,0.2), -2px -1px 0 rgba(220,195,165,0.15);
    animation: subtle-glitch 2s infinite;
  }
  @keyframes subtle-glitch {
    0%, 94%, 100% { transform: scaleY(0.9) scaleX(0.95) translate(0); }
    95% { transform: scaleY(0.9) scaleX(0.95) translate(-0.5px, 0.3px); }
    96% { transform: scaleY(0.9) scaleX(0.95) translate(0.5px, -0.3px); }
    97% { transform: scaleY(0.9) scaleX(0.95) translate(-0.3px, 0); }
  }
  .header-nav {
    display: flex; align-items: center; gap: 28px; list-style: none;
  }
  .header-nav a {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.6rem; letter-spacing: 3.5px;
    text-transform: uppercase; color: #70695F;
    text-decoration: none; transition: color 0.3s;
  }
  .header-nav a:hover { color: #2F2B26; }
  .nav-dot { width: 4px; height: 4px; background: #8B8D72; border-radius: 50%; }
  .header-rule {
    max-width: 1200px;
    margin: 18px auto 0; padding: 0 56px;
  }
  .header-rule hr { border: none; border-top: 1px solid rgba(80, 70, 55, 0.15); }

  /* ═══════ Three-Column Editorial Layout ═══════ */
  .editorial {
    max-width: 1200px;
    margin: 0 auto;
    padding: 48px 56px 0;
    display: grid;
    grid-template-columns: 200px 1fr 220px;
    gap: 48px;
    align-items: start;
  }

  /* ── Left Column: Reading Note Intro ── */
  .col-left {
    position: sticky;
    top: 48px;
    padding-right: 0;
  }
  .col-left-eyebrow {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.5rem;
    letter-spacing: 4.5px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 20px;
  }
  .col-left-subtitle {
    font-family: "EB Garamond", Georgia, serif;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-mid);
    font-style: italic;
    margin-bottom: 28px;
  }
  /* Botanical ornament — same style as homepage */
  .col-left-ornament {
    width: 72px;
    height: 96px;
    opacity: 0.35;
    margin: 0 auto 0 0;
  }
  .breadcrumb {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.52rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-light);
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
  }
  .breadcrumb a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s;
  }
  .breadcrumb a:hover { color: var(--accent); }
  .breadcrumb .sep { margin: 0 6px; opacity: 0.4; }

  /* ── Center Column: Chapter List ── */
  .col-center {}
  .book-title {
    font-family: "EB Garamond", Georgia, serif;
    font-size: 3rem;
    font-weight: 400;
    line-height: 1.08;
    color: var(--text);
    margin-bottom: 10px;
  }
  .book-byline {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.6rem;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 4px;
  }
  .book-year {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.68rem;
    color: var(--text-light);
    margin-bottom: 16px;
  }
  .book-avatar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 28px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--border);
  }
  .avatar-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "EB Garamond", serif;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-mid);
  }
  .avatar-meta-name {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.55rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text);
  }
  .avatar-meta-date {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.52rem;
    color: var(--text-light);
    letter-spacing: 1px;
  }

  /* Chapter list */
  .chapter-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }
  .ch-card {
    display: flex;
    align-items: baseline;
    gap: 14px;
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid transparent;
    text-decoration: none;
    color: inherit;
    transition: all 0.25s ease;
  }
  .ch-card:hover {
    background: var(--card-bg);
    border-color: var(--border);
    transform: translateX(4px);
  }
  .ch-num {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.55rem;
    letter-spacing: 1.5px;
    color: var(--text-light);
    white-space: nowrap;
    min-width: 36px;
  }
  .ch-title {
    font-family: "EB Garamond", Georgia, serif;
    font-size: 1.05rem;
    color: var(--text);
    line-height: 1.4;
  }
  .ch-card:hover .ch-title { color: var(--accent); }

  /* ── Right Column: Book Sidebar ── */
  .col-right {
    position: sticky;
    top: 48px;
  }
  .sidebar-frame {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    background: var(--card-bg);
    box-shadow: 0 2px 8px rgba(47, 43, 38, 0.06);
  }
  .sidebar-cover {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(47, 43, 38, 0.08);
    margin-bottom: 16px;
    line-height: 0;
  }
  .sidebar-cover img {
    width: 100%;
    display: block;
  }
  .sidebar-meta {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.6rem;
    color: var(--text-light);
    margin-bottom: 14px;
    letter-spacing: 0.5px;
  }
  .sidebar-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 18px;
  }
  .sidebar-tag {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.5rem;
    letter-spacing: 0.8px;
    text-transform: lowercase;
    color: var(--text-mid);
    background: rgba(107, 140, 174, 0.07);
    padding: 3px 10px;
    border-radius: 100px;
    border: none;
  }
  .sidebar-desc {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--text-mid);
    margin-bottom: 20px;
    font-style: italic;
  }
  .sidebar-link {
    font-family: "Departure Mono", monospace;
    font-size: 0.58rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--accent);
    text-decoration: none;
    transition: opacity 0.3s;
  }
  .sidebar-link:hover { opacity: 0.7; }

  /* ═══════ Footer ═══════ */
  .site-footer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 56px 48px;
  }
  .footer-rule {
    border: none;
    border-top: 1px solid var(--border);
    margin-bottom: 32px;
  }
  .footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
  }
  .footer-quote-left {
    font-size: 0.88rem;
    font-style: italic;
    color: var(--text-mid);
    line-height: 1.7;
    max-width: 480px;
    white-space: nowrap;
  }

  .footer-right-sec {
    display: flex; align-items: baseline; gap: 24px;
  }
  .footer-copy, .footer-author {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.5rem; letter-spacing: 1.5px;
    color: var(--text-light); text-transform: uppercase;
  }
  .footer-author {
    font-family: "EB Garamond", serif;
    font-size: 0.85rem; letter-spacing: 0;
    text-transform: none; font-style: italic;
  }

  /* ═══════ Responsive ═══════ */
  @media (max-width: 1000px) {
    .editorial {
      grid-template-columns: 1fr 200px;
      gap: 36px;
    }
    .col-left { display: none; }
  }
  @media (max-width: 768px) {
    .editorial {
      grid-template-columns: 1fr;
      padding: 32px 28px 0;
      gap: 32px;
    }
    .col-left { display: none; }
    .col-center { padding-left: 0; }
    .col-right {
      position: static;
      padding-left: 0;
      display: grid;
      grid-template-columns: 120px 1fr;
      gap: 20px;
      align-items: start;
    }
    .sidebar-cover { margin-bottom: 0; }
    .sidebar-tags { margin-bottom: 12px; }
    .site-header nav { display: none; }
    .site-header { padding: 24px 28px 0; }
    .header-rule { padding: 0 28px; }
    .site-footer { padding: 40px 28px 36px; }
    .footer-bottom { flex-direction: column; gap: 12px; }
    .footer-quote-left { white-space: normal; font-size: 0.82rem; max-width: 100%; }
    .book-title { font-size: 2.4rem; }
  }
  @media (max-width: 580px) {
    .site-header { padding: 20px 20px 0; }
    .header-rule { padding: 0 20px; }
    .editorial { padding: 24px 20px 0; }
    .col-right { grid-template-columns: 1fr; }
    .site-footer { padding: 32px 20px 28px; }
    .book-title { font-size: 2rem; }
  }

main{max-width:1050px;margin:50px auto;padding:0 32px;line-height:1.95;font-family:"EB Garamond","Songti SC","Noto Serif CJK SC",Georgia,serif}h1{font-size:2.7rem;font-weight:400;margin:24px 0}h1 span{font-size:1.4rem;color:var(--text-mid)}h2{font-size:1.45rem;font-weight:500;margin:25px 0 14px}h3{font-weight:500}p{margin:14px 0}a{color:#466b89;text-underline-offset:4px}nav{display:flex;flex-wrap:wrap;gap:18px}nav a{text-decoration:none}.eyebrow,.locator,.small,.ch-num{font-family:"JetBrains Mono",monospace;font-size:.75rem;color:#625d55}.deck{font-size:1.2rem;color:var(--text-mid)}.overview{max-width:750px}.annotation{max-width:780px;padding:30px 0;border-bottom:1px solid var(--border);scroll-margin-top:24px}.annotation p{overflow-wrap:anywhere}.permalink{font: .75rem "JetBrains Mono",monospace}.locator{line-height:1.65;overflow-wrap:anywhere}.related{font-size:.8rem;gap:8px 16px}.related a{border-bottom:1px solid var(--border)}.contents{background:var(--card-bg);padding:18px 24px;border:1px solid var(--border);border-radius:8px;margin:28px 0}.contents ol{padding-left:24px;columns:2;column-gap:32px}.contents li{break-inside:avoid}.sources{font-size:.85rem;overflow-wrap:anywhere}.sources ol{padding-left:25px}.chapter-nav{border-bottom:1px solid var(--border);padding:20px 0;font-size:.85rem}.site-header nav a{font-family:"JetBrains Mono",monospace;font-size:.7rem}.site-footer span{float:right}.controls{display:flex;flex-wrap:wrap;gap:12px;align-items:end;margin:24px 0}.controls label{display:flex;flex-direction:column;font-size:.8rem;gap:4px}.controls input[type=checkbox]{width:auto}.controls label:has(input[type=checkbox]){flex-direction:row}input,select,button{font:inherit;color:var(--text);padding:8px 12px;background:var(--card-bg);border:1px solid #b7aea1;border-radius:5px;max-width:100%}button{cursor:pointer}button:hover{background:var(--accent-soft)}:focus-visible{outline:3px solid #466b89;outline-offset:3px}.knowledge-list{list-style:none;padding:0}.knowledge-item{padding:20px 0;border-bottom:1px solid var(--border)}.knowledge-item span{font-size:.75rem;color:var(--text-mid);margin-left:20px}.knowledge-item p{font-size:.95rem}.backlink{padding:18px 0;border-bottom:1px solid var(--border)}.backlink p{font-size:.95rem}.graph-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(220px,1fr);gap:18px}#network{width:100%;height:620px;background:var(--card-bg);border:1px solid var(--border);border-radius:8px;touch-action:none}#node-panel{max-height:620px;overflow:auto;padding:18px;background:var(--card-bg);border:1px solid var(--border);font-size:.88rem}#node-panel ul{padding-left:20px}.node-list{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}.node-list button{font-size:.75rem}.graph-node{cursor:pointer}.graph-node text{font-size:10px;fill:#3a3632;pointer-events:none}.graph-edge{cursor:pointer;stroke:#b4aea4;stroke-width:1.2}.graph-edge:hover{stroke:#466b89;stroke-width:4}.skip{position:absolute;top:-100px}.skip:focus{top:0;background:#fff;padding:10px;z-index:10000}[hidden]{display:none!important}details{margin:16px 0}summary{cursor:pointer}#edge-list button{display:block;text-align:left;font-size:.8rem;margin:8px 0}.citation{font-size:.75em;vertical-align:super}small{font-size:.8rem;color:var(--text-mid)}@media(max-width:700px){main{padding:0 20px;margin-top:28px}h1{font-size:2rem}.contents ol{columns:1}.graph-layout{grid-template-columns:1fr}#network{height:380px}#node-panel{max-height:none}.site-header nav{display:flex;gap:10px}.site-logo{font-size:1.1rem}.site-footer span{float:none;display:block}.knowledge-item span{display:block;margin:0}.controls{gap:8px}.controls input{width:100%}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}