:root {
      --paper: #fbf8f1;
      --paper2: #f3eee3;
      --paper3: #ebe4d5;
      --ink: #1d1f23;
      --ink2: #3d4148;
      --muted: #6c707a;
      --rule: #e2dacb;
      --accent: #a8571a;
      --accent-soft: #f6e6d6;
      --g: #2f6b4f;
      --g-soft: #e3f0e8;
      --t: #1f5c8a;
      --t-soft: #e2edf7;
      --k: #6e3b94;
      --k-soft: #efe6f6;
      --a: #8a5a00;
      --a-soft: #f6ecd6;
      --r: #a3302a;
      --r-soft: #f7e4e1;
      --code-bg: #f5f1e8;
      --el: #8f949c;
      --el2: #7b8088;
      --ivory: #f3ecdc;
      --serif: "Iowan Old Style", "Charter", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
      --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
      --mono: "SF Mono", ui-monospace, Menlo, Consolas, "Liberation Mono", monospace;
    }

    [data-theme="dark"] {
      --paper: #15171b;
      --paper2: #1b1e23;
      --paper3: #23272e;
      --ink: #e8e4db;
      --ink2: #c8c3b8;
      --muted: #979ba4;
      --rule: #2d323a;
      --accent: #e39a58;
      --accent-soft: #2c2219;
      --g: #7cc4a0;
      --g-soft: #16261e;
      --t: #82b6e2;
      --t-soft: #14212e;
      --k: #c49ce4;
      --k-soft: #22192b;
      --a: #e2b866;
      --a-soft: #282114;
      --r: #ef8f86;
      --r-soft: #2c1918;
      --code-bg: #1c2026;
      --el: #7d828b;
      --el2: #686d75;
      --ivory: #e9e1cf;
    }

    * {
      box-sizing: border-box
    }

    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%
    }

    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font: 400 19px/1.64 var(--serif);
      font-kerning: normal;
      text-rendering: optimizeLegibility
    }

    a {
      color: var(--accent);
      text-decoration-thickness: 1px;
      text-underline-offset: 2px
    }

    a:hover {
      text-decoration-thickness: 2px
    }

    ::selection {
      background: var(--accent-soft)
    }

    .readbar {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      z-index: 100;
      pointer-events: none
    }

    .readbar span {
      display: block;
      height: 100%;
      width: 0;
      background: var(--accent)
    }

    .layout {
      display: grid;
      grid-template-columns: 296px minmax(0, 1fr);
      min-height: 100vh
    }

    #toc {
      position: sticky;
      top: 0;
      align-self: start;
      height: 100vh;
      overflow-y: auto;
      padding: 22px 14px 60px;
      border-right: 1px solid var(--rule);
      background: var(--paper2);
      font: 500 13.5px/1.35 var(--sans)
    }

    #toc .brand {
      font: 800 16px/1.2 var(--serif);
      margin: 0 0 2px;
      color: var(--ink)
    }

    #toc .brand small {
      display: block;
      font: 500 12px/1.3 var(--sans);
      color: var(--muted);
      margin-top: 4px
    }

    .progress-bar {
      height: 6px;
      border-radius: 6px;
      background: var(--rule);
      overflow: hidden;
      margin: 14px 0 5px
    }

    .progress-bar>span {
      display: block;
      height: 100%;
      width: 0;
      background: var(--g);
      transition: width .3s
    }

    .progress-count {
      color: var(--muted);
      font-size: 12px
    }

    .toc-tools {
      display: flex;
      gap: 6px;
      margin-top: 12px;
      flex-wrap: wrap
    }

    #toc-list {
      list-style: none;
      margin: 14px 0 0;
      padding: 0
    }

    #toc-list li {
      margin: 0;
      position: relative
    }

    #toc-list a {
      display: block;
      padding: 4px 24px 4px 8px;
      border-radius: 6px;
      color: var(--ink2);
      text-decoration: none
    }

    #toc-list a:hover {
      background: var(--paper3)
    }

    #toc-list a.active {
      background: var(--accent-soft);
      color: var(--ink)
    }

    #toc-list .toc-part {
      margin-top: 16px
    }

    #toc-list .toc-part>a {
      font-weight: 800;
      color: var(--ink);
      text-transform: uppercase;
      font-size: 11.2px;
      letter-spacing: .09em
    }

    #toc-list .toc-lesson>a {
      padding-left: 16px;
      font-weight: 450
    }

    #toc-list .toc-chapter>a {
      font-weight: 650;
      color: var(--ink)
    }

    .toc-check {
      position: absolute;
      right: 7px;
      top: 4px;
      color: var(--g);
      font-weight: 800
    }

    button,
    .btn {
      font: 650 13px/1 var(--sans);
      border: 1px solid var(--rule);
      background: var(--paper);
      color: var(--ink);
      padding: 8px 11px;
      border-radius: 8px;
      cursor: pointer
    }

    button:hover,
    .btn:hover {
      border-color: var(--accent)
    }

    button.primary {
      background: var(--accent);
      border-color: var(--accent);
      color: #fff
    }

    [data-theme="dark"] button.primary {
      color: #1a1206
    }

    .toc-toggle {
      display: none;
      position: fixed;
      left: 12px;
      top: 12px;
      z-index: 60;
      box-shadow: 0 2px 10px rgba(0, 0, 0, .12)
    }

    main {
      min-width: 0
    }

    .page {
      max-width: 768px;
      margin: 0 auto;
      padding: 52px 28px 160px
    }

    .wide {
      margin-left: -120px;
      margin-right: -120px
    }

    @media (max-width:1320px) {
      .wide {
        margin-left: -40px;
        margin-right: -40px
      }
    }

    @media (max-width:1120px) {
      .layout {
        grid-template-columns: 1fr
      }

      #toc {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        width: 300px;
        z-index: 70;
        transform: translateX(-102%);
        transition: transform .2s ease;
        box-shadow: 0 0 40px rgba(0, 0, 0, .2)
      }

      #toc.open {
        transform: none
      }

      .toc-toggle {
        display: block
      }

      .wide {
        margin-left: 0;
        margin-right: 0
      }

      .page {
        padding-top: 64px
      }
    }

    @media (max-width:640px) {
      body {
        font-size: 17.5px
      }

      .page {
        padding-left: 18px;
        padding-right: 18px
      }
    }

    h1,
    h2,
    h3,
    h4,
    h5 {
      line-height: 1.2
    }

    .hero {
      padding: 26px 0 8px
    }

    .kicker {
      font: 800 12px/1.2 var(--sans);
      letter-spacing: .2em;
      text-transform: uppercase;
      color: var(--accent)
    }

    .hero h1 {
      font: 800 58px/1.02 var(--serif);
      letter-spacing: -.02em;
      margin: 14px 0 0
    }

    @media (max-width:640px) {
      .hero h1 {
        font-size: 42px
      }
    }

    .hero .sub {
      font: italic 400 23px/1.42 var(--serif);
      color: var(--ink2);
      margin: 18px 0 26px
    }

    .edition {
      font: 13.5px/1.55 var(--sans);
      color: var(--muted)
    }

    .epi {
      margin: 22px 0;
      padding: 2px 0 2px 18px;
      border-left: 3px solid var(--rule);
      font-style: italic;
      color: var(--ink2)
    }

    .epi cite {
      display: block;
      font: normal 13px/1.4 var(--sans);
      color: var(--muted);
      margin-top: 6px
    }

    .chapter {
      margin-top: 90px
    }

    .chapter>h2,
    .part-head h2 {
      font: 800 38px/1.1 var(--serif);
      letter-spacing: -.01em;
      margin: 8px 0 14px
    }

    .part-head {
      margin: 120px 0 26px;
      padding-top: 26px;
      border-top: 3px double var(--rule)
    }

    .part-num {
      font: 800 12px/1 var(--sans);
      letter-spacing: .2em;
      text-transform: uppercase;
      color: var(--accent)
    }

    .part-lede {
      font-style: italic;
      color: var(--ink2);
      font-size: 20px
    }

    article.lesson {
      margin: 72px 0 0;
      scroll-margin-top: 16px
    }

    article.lesson>h3 {
      font: 780 29px/1.18 var(--serif);
      margin: 0 0 18px;
      letter-spacing: -.005em
    }

    .ln {
      display: block;
      font: 800 11.5px/1 var(--sans);
      letter-spacing: .16em;
      text-transform: uppercase;
      color: var(--muted);
      margin-bottom: 9px
    }

    article.lesson.is-learned>h3 .ln::after {
      content: "  ✓ learned";
      color: var(--g)
    }

    h4 {
      font: 750 17.5px/1.3 var(--sans);
      margin: 32px 0 8px;
      color: var(--ink)
    }

    p {
      margin: 0 0 16px
    }

    ul,
    ol {
      margin: 0 0 18px;
      padding-left: 24px
    }

    li {
      margin: 4px 0
    }

    strong {
      font-weight: 700
    }

    em {
      font-style: italic
    }

    hr {
      border: 0;
      border-top: 1px solid var(--rule);
      margin: 36px 0
    }

    .muted {
      color: var(--muted)
    }

    .small {
      font-size: 15px
    }

    .ru {
      font-style: normal;
      color: var(--k);
      white-space: nowrap
    }

    .box,
    .key,
    .kur,
    .upd,
    .corr,
    .feels,
    .try,
    .machine {
      border-radius: 12px;
      padding: 14px 18px;
      margin: 24px 0;
      font-size: 17.5px;
      line-height: 1.55;
      border: 1px solid var(--rule);
      background: var(--paper2)
    }

    :is(.box, .key, .kur, .upd, .corr, .feels, .try, .machine)>:last-child {
      margin-bottom: 0
    }

    .lbl {
      display: block;
      font: 800 11.5px/1.2 var(--sans);
      letter-spacing: .12em;
      text-transform: uppercase;
      margin: 2px 0 6px
    }

    .key {
      background: var(--accent-soft);
      border-color: transparent;
      border-left: 4px solid var(--accent)
    }

    .key .lbl {
      color: var(--accent)
    }

    .kur {
      background: var(--k-soft);
      border-color: transparent;
      border-left: 4px solid var(--k)
    }

    .kur .lbl {
      color: var(--k)
    }

    .upd {
      background: var(--a-soft);
      border-color: transparent;
      border-left: 4px solid var(--a)
    }

    .upd .lbl {
      color: var(--a)
    }

    .corr {
      background: var(--r-soft);
      border-color: transparent;
      border-left: 4px solid var(--r)
    }

    .corr .lbl {
      color: var(--r)
    }

    .feels {
      border-left: 4px dotted var(--muted)
    }

    .feels .lbl {
      color: var(--muted)
    }

    .try {
      background: var(--g-soft);
      border-color: transparent;
      border-left: 4px solid var(--g)
    }

    .try .lbl {
      color: var(--g)
    }

    .machine {
      background: var(--t-soft);
      border-color: transparent;
      border-left: 4px solid var(--t)
    }

    .machine .lbl {
      color: var(--t)
    }

    .rule {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 4px 12px;
      align-items: baseline;
      border-radius: 10px;
      padding: 12px 16px;
      margin: 18px 0;
      font-size: 17.5px;
      line-height: 1.5
    }

    .rule.g {
      background: var(--g-soft);
      border: 1px solid color-mix(in srgb, var(--g) 28%, transparent)
    }

    .rule.t {
      background: var(--t-soft);
      border: 1px solid color-mix(in srgb, var(--t) 28%, transparent)
    }

    .rid {
      font: 800 12.5px/1 var(--mono);
      padding: 5px 7px 4px;
      border-radius: 6px;
      color: #fff;
      white-space: nowrap
    }

    [data-theme="dark"] .rid {
      color: #0f1114
    }

    .rule.g .rid {
      background: var(--g)
    }

    .rule.t .rid {
      background: var(--t)
    }

    .rule b {
      font-family: var(--sans);
      font-size: 16px
    }

    .b {
      display: inline-block;
      font: 800 10px/1 var(--sans);
      letter-spacing: .07em;
      text-transform: uppercase;
      padding: 3px 6px 2px;
      border-radius: 5px;
      vertical-align: 2px;
      margin: 0 2px;
      border: 1px solid;
      white-space: nowrap
    }

    .b.ev {
      color: var(--g);
      border-color: color-mix(in srgb, var(--g) 45%, transparent);
      background: color-mix(in srgb, var(--g) 9%, transparent)
    }

    .b.me {
      color: var(--t);
      border-color: color-mix(in srgb, var(--t) 45%, transparent);
      background: color-mix(in srgb, var(--t) 9%, transparent)
    }

    .b.he {
      color: var(--a);
      border-color: color-mix(in srgb, var(--a) 45%, transparent);
      background: color-mix(in srgb, var(--a) 9%, transparent)
    }

    .b.hy {
      color: var(--k);
      border-color: color-mix(in srgb, var(--k) 45%, transparent);
      background: color-mix(in srgb, var(--k) 9%, transparent)
    }

    .b.st {
      color: var(--muted);
      border-color: color-mix(in srgb, var(--muted) 45%, transparent);
      background: color-mix(in srgb, var(--muted) 9%, transparent)
    }

    pre {
      font: 13.6px/1.52 var(--mono);
      background: var(--code-bg);
      border: 1px solid var(--rule);
      border-radius: 10px;
      padding: 13px 15px;
      white-space: pre-wrap;
      word-break: break-word;
      overflow-x: auto;
      margin: 16px 0;
      color: var(--ink)
    }

    code {
      font: .84em var(--mono);
      background: var(--code-bg);
      padding: 1px 5px;
      border-radius: 5px;
      border: 1px solid var(--rule)
    }

    pre code {
      border: 0;
      padding: 0;
      background: none;
      font-size: inherit
    }

    .copy-wrap {
      position: relative
    }

    .copy-wrap>pre.prompt {
      padding-top: 36px
    }

    .copy-btn {
      position: absolute;
      top: 7px;
      right: 8px;
      font-size: 11.5px;
      padding: 5px 8px;
      opacity: .72
    }

    .copy-wrap:hover .copy-btn {
      opacity: 1
    }

    .ba {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin: 24px 0
    }

    @media (max-width:860px) {
      .ba {
        grid-template-columns: 1fr
      }
    }

    .ba>div {
      border-radius: 12px;
      border: 1px solid var(--rule);
      padding: 12px 14px 14px;
      background: var(--paper2);
      min-width: 0
    }

    .ba .before {
      border-top: 4px solid var(--r)
    }

    .ba .after {
      border-top: 4px solid var(--g)
    }

    .ba h5 {
      font: 800 11.5px/1.2 var(--sans);
      letter-spacing: .12em;
      text-transform: uppercase;
      margin: 2px 0 8px
    }

    .ba .before h5 {
      color: var(--r)
    }

    .ba .after h5 {
      color: var(--g)
    }

    .ba pre {
      margin: 0 0 10px;
      font-size: 13px
    }

    .ba .why {
      font: 14.6px/1.5 var(--sans);
      color: var(--ink2);
      margin: 0
    }

    .tbl-wrap {
      overflow-x: auto;
      margin: 22px 0;
      border: 1px solid var(--rule);
      border-radius: 12px
    }

    table {
      border-collapse: collapse;
      width: 100%;
      font: 14.6px/1.45 var(--sans)
    }

    th,
    td {
      border-bottom: 1px solid var(--rule);
      padding: 9px 11px;
      text-align: left;
      vertical-align: top
    }

    tr:last-child td {
      border-bottom: 0
    }

    th {
      font-weight: 800;
      background: var(--paper2);
      font-size: 12.5px;
      letter-spacing: .04em;
      text-transform: uppercase;
      color: var(--ink2)
    }

    td:first-child {
      font-weight: 650
    }

    figure {
      margin: 30px 0
    }

    figure svg {
      width: 100%;
      height: auto;
      display: block
    }

    figcaption {
      font: 13.8px/1.5 var(--sans);
      color: var(--muted);
      margin-top: 8px
    }

    .widget {
      border: 1px solid var(--rule);
      border-radius: 14px;
      background: var(--paper2);
      padding: 16px 16px 14px;
      margin: 28px 0;
      font: 15px/1.5 var(--sans)
    }

    .widget>h5 {
      margin: 0 0 12px;
      font: 800 12px/1.2 var(--sans);
      letter-spacing: .14em;
      text-transform: uppercase;
      color: var(--accent)
    }

    .widget p {
      margin: 0 0 10px
    }

    .widget label {
      font-weight: 650
    }

    .widget input[type=text],
    .widget textarea,
    .widget select {
      width: 100%;
      font: 14px/1.45 var(--sans);
      color: var(--ink);
      background: var(--paper);
      border: 1px solid var(--rule);
      border-radius: 8px;
      padding: 8px 10px
    }

    .widget textarea {
      font-family: var(--mono);
      font-size: 13px;
      min-height: 70px;
      resize: vertical
    }

    .widget input[type=range] {
      width: 100%;
      accent-color: var(--accent)
    }

    .row {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      align-items: center
    }

    .grid2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px
    }

    @media (max-width:700px) {
      .grid2 {
        grid-template-columns: 1fr
      }
    }

    .panel {
      border: 1px dashed var(--rule);
      border-radius: 10px;
      padding: 12px 14px;
      background: var(--paper);
      min-height: 60px
    }

    .panel h6 {
      font: 800 15px/1.25 var(--sans);
      margin: 0 0 6px
    }

    .panel dl {
      margin: 0;
      display: grid;
      grid-template-columns: 110px 1fr;
      gap: 6px 12px
    }

    .panel dt {
      font-weight: 800;
      color: var(--muted);
      font-size: 12px;
      letter-spacing: .06em;
      text-transform: uppercase;
      padding-top: 2px
    }

    .panel dd {
      margin: 0
    }

    .lesson-foot {
      margin-top: 30px;
      padding-top: 12px;
      border-top: 1px dashed var(--rule);
      display: flex;
      justify-content: flex-end
    }

    .learned-btn {
      font-size: 12.5px
    }

    article.lesson.is-learned .learned-btn {
      border-color: var(--g);
      color: var(--g)
    }

    .toast {
      position: fixed;
      left: 50%;
      bottom: 22px;
      transform: translateX(-50%);
      background: var(--ink);
      color: var(--paper);
      font: 600 13px/1 var(--sans);
      padding: 10px 14px;
      border-radius: 9px;
      opacity: 0;
      transition: opacity .2s;
      pointer-events: none;
      z-index: 200
    }

    .toast.on {
      opacity: .95
    }

    /* elephant */
    #elephant .el-part {
      cursor: pointer;
      transition: filter .15s, opacity .15s
    }

    #elephant .el-part:hover,
    #elephant .el-part.sel {
      filter: brightness(1.18) drop-shadow(0 0 6px rgba(168, 87, 26, .55))
    }

    #elephant .body-fill {
      fill: var(--el)
    }

    #elephant .far {
      fill: var(--el2)
    }

    #elephant .stroke-el {
      stroke: var(--el)
    }

    #elephant .tusk {
      stroke: var(--ivory)
    }

    #elephant .earfill {
      fill: color-mix(in srgb, var(--el) 82%, #c98c7a)
    }

    #elephant .el-world,
    #elephant .el-labels {
      opacity: 0;
      transition: opacity .4s;
      pointer-events: none
    }

    #elephant.lit .el-world,
    #elephant.lit .el-labels {
      opacity: 1
    }

    #elephant .el-labels text {
      font: 700 15px var(--sans);
      fill: var(--accent)
    }

    #elephant .el-world text {
      font: 600 12px var(--sans);
      fill: var(--muted)
    }

    #elephant .ground {
      stroke: var(--rule);
      stroke-width: 2
    }

    #elephant .hand {
      fill: none;
      stroke: var(--accent);
      stroke-width: 2;
      stroke-dasharray: 3 3
    }

    /* diagrams */
    .dg text {
      font-family: var(--sans);
      fill: var(--ink)
    }

    .dg .t-sm {
      font-size: 12.5px;
      fill: var(--muted)
    }

    .dg .t-md {
      font-size: 15px;
      font-weight: 700
    }

    .dg .t-lg {
      font-size: 19px;
      font-weight: 800
    }

    .dg .node {
      fill: var(--paper);
      stroke: var(--ink2);
      stroke-width: 1.6
    }

    .dg .node-a {
      fill: var(--accent-soft);
      stroke: var(--accent);
      stroke-width: 2
    }

    .dg .node-k {
      fill: var(--k-soft);
      stroke: var(--k);
      stroke-width: 1.6
    }

    .dg .node-t {
      fill: var(--t-soft);
      stroke: var(--t);
      stroke-width: 1.6
    }

    .dg .node-g {
      fill: var(--g-soft);
      stroke: var(--g);
      stroke-width: 1.6
    }

    .dg .arr {
      fill: none;
      stroke: var(--ink2);
      stroke-width: 1.6
    }

    .dg .arr-d {
      fill: none;
      stroke: var(--ink2);
      stroke-width: 1.6;
      stroke-dasharray: 5 4
    }

    .dg .arr-a {
      fill: none;
      stroke: var(--accent);
      stroke-width: 2.2
    }

    .dg .wave {
      fill: none;
      stroke: var(--accent);
      stroke-width: 3
    }

    .dg .ah {
      fill: var(--ink2)
    }

    .dg .ah-a {
      fill: var(--accent)
    }

    /* spiral */
    #spiral-svg .sp-path {
      fill: none;
      stroke: var(--rule);
      stroke-width: 10;
      stroke-linecap: round
    }

    #spiral-svg .sp-node {
      cursor: pointer;
      stroke-width: 2.5
    }

    #spiral-svg .sp-node.open {
      fill: var(--k-soft);
      stroke: var(--k)
    }

    #spiral-svg .sp-node.close {
      fill: var(--a-soft);
      stroke: var(--a)
    }

    #spiral-svg .sp-node.sel {
      stroke-width: 5
    }

    #spiral-svg text {
      font-family: var(--sans);
      fill: var(--ink);
      pointer-events: none
    }

    #spiral-svg .sp-num {
      font-size: 14px;
      font-weight: 800
    }

    #spiral-svg .sp-lab {
      font-size: 13px;
      font-weight: 700
    }

    #spiral-svg .sp-ru {
      font-size: 11px;
      fill: var(--muted)
    }

    /* holon */
    #holon svg .lv {
      fill: none;
      stroke: var(--ink2);
      stroke-width: 1.5;
      transition: all .2s
    }

    #holon svg .lv.on {
      stroke: var(--accent);
      stroke-width: 3.5;
      fill: color-mix(in srgb, var(--accent) 8%, transparent)
    }

    #holon svg .rel {
      stroke: var(--ink2);
      stroke-width: 6;
      stroke-linecap: round
    }

    #holon svg .rel.on {
      stroke: var(--accent)
    }

    #holon svg text {
      font-family: var(--sans);
      font-size: 12px;
      font-weight: 700;
      fill: var(--muted)
    }

    #holon .here {
      transition: transform .3s
    }

    #holon .here circle {
      fill: var(--accent)
    }

    #h-log,
    #h-stack {
      list-style: none;
      margin: 6px 0 0;
      padding: 0;
      font-size: 14px
    }

    #h-log li {
      padding: 5px 8px;
      border-radius: 6px;
      margin: 3px 0;
      background: var(--paper)
    }

    #h-log li.warn {
      background: var(--r-soft)
    }

    #h-log li.ok {
      background: var(--g-soft)
    }

    #h-stack li {
      padding: 3px 0;
      border-bottom: 1px dashed var(--rule)
    }

    #h-stack li span {
      color: var(--muted);
      font-size: 12px
    }

    /* sim */
    #sim-canvas {
      width: 100%;
      height: 300px;
      display: block;
      background: var(--paper);
      border: 1px solid var(--rule);
      border-radius: 10px
    }

    .sim-ctl {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
      margin: 12px 0
    }

    @media (max-width:760px) {
      .sim-ctl {
        grid-template-columns: 1fr 1fr
      }
    }

    .sim-ctl output {
      font-weight: 800;
      color: var(--accent)
    }

    #sim-read {
      font-size: 14.5px
    }

    /* linter */
    #lint-out ul {
      list-style: none;
      padding: 0;
      margin: 10px 0 0
    }

    #lint-out li {
      display: grid;
      grid-template-columns: 22px 1fr;
      gap: 8px;
      padding: 6px 8px;
      border-radius: 7px;
      margin: 3px 0;
      background: var(--paper)
    }

    #lint-out li.warn {
      background: var(--r-soft)
    }

    #lint-out li.info {
      background: var(--a-soft)
    }

    #lint-out li.ok {
      background: var(--g-soft)
    }

    #lint-out .ic {
      font-weight: 900;
      text-align: center
    }

    #lint-out .lt {
      font-weight: 750
    }

    /* cards */
    .card {
      border: 1px solid var(--rule);
      border-radius: 14px;
      background: var(--paper);
      padding: 20px;
      min-height: 150px;
      font: 17px/1.5 var(--serif)
    }

    .card .cq {
      font-weight: 700;
      font-size: 19px;
      margin-bottom: 10px
    }

    .card .ca {
      border-top: 1px dashed var(--rule);
      padding-top: 10px;
      color: var(--ink2)
    }

    #cards .row {
      margin-top: 10px
    }

    /* session card */
    #session-card .fld {
      margin: 0 0 10px
    }

    #session-card .fld label {
      display: block;
      font-size: 12.5px;
      letter-spacing: .06em;
      text-transform: uppercase;
      color: var(--ink2);
      margin-bottom: 4px
    }

    #session-card .fld small {
      font-weight: 400;
      text-transform: none;
      letter-spacing: 0;
      color: var(--muted)
    }

    #session-card textarea {
      min-height: 46px;
      font-family: var(--sans);
      font-size: 14px
    }

    #session-card .private textarea {
      background: var(--k-soft)
    }

    #sc-preview {
      max-height: 320px;
      overflow: auto;
      margin-top: 12px
    }

    #sc-preview:empty {
      display: none
    }

    /* pocket */
    .pocket {
      border: 2px solid var(--ink2);
      border-radius: 16px;
      padding: 18px 20px;
      background: var(--paper);
      font: 15px/1.5 var(--sans)
    }

    .pocket h5 {
      font: 800 13px/1.2 var(--sans);
      letter-spacing: .14em;
      text-transform: uppercase;
      color: var(--accent);
      margin: 12px 0 6px
    }

    .pocket ol,
    .pocket ul {
      margin: 0 0 6px;
      padding-left: 20px
    }

    .pocket .cols {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4px 22px
    }

    @media (max-width:700px) {
      .pocket .cols {
        grid-template-columns: 1fr
      }
    }

    .elephants {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
      gap: 10px;
      margin: 18px 0
    }

    .elephants div {
      border: 1px solid var(--rule);
      border-radius: 10px;
      padding: 10px 12px;
      font: 14px/1.45 var(--sans);
      background: var(--paper2)
    }

    .elephants b {
      display: block;
      font-size: 13px;
      margin-bottom: 3px
    }

    .gloss dt {
      font: 750 16px/1.3 var(--sans);
      margin-top: 14px
    }

    .gloss dd {
      margin: 3px 0 0 0;
      color: var(--ink2)
    }

    .src li {
      font-size: 15.5px;
      line-height: 1.5;
      margin: 6px 0
    }

    @media print {

      #toc,
      .readbar,
      .toc-toggle,
      .copy-btn,
      .lesson-foot,
      .widget button,
      .toast {
        display: none !important
      }

      .layout {
        display: block
      }

      .page {
        max-width: none;
        padding: 0
      }

      body {
        font-size: 11pt;
        background: #fff;
        color: #000
      }

      .part-head {
        break-before: page
      }

      .wide {
        margin: 0
      }
    }

    body.print-pocket .page * {
      visibility: hidden
    }

    body.print-pocket #pocket,
    body.print-pocket #pocket * {
      visibility: visible
    }

    body.print-pocket #pocket {
      position: absolute;
      left: 0;
      top: 0;
      width: 100%
    }