/* Page content styles — shared by every document page. */
:root {
    --paper: #FFFFFF; --ink: #0F3192; --slate: #576FB3;
    --yellow: #FFC62C; --sky: #9DC7FF; --rule: #DCE3F5; --card: #F3EBFF; --panel: #E8D7FF;
  }
  @media (prefers-color-scheme: dark) {
    :root { --paper: #0F3192; --ink: #FFFFFF; --slate: rgba(255,255,255,0.74);
            --rule: rgba(255,255,255,0.22); --card: rgba(255,255,255,0.08); --panel: rgba(255,255,255,0.09); }
  }
  :root[data-theme="dark"] {
    --paper: #0F3192; --ink: #FFFFFF; --slate: rgba(255,255,255,0.74);
    --rule: rgba(255,255,255,0.22); --card: rgba(255,255,255,0.08); --panel: rgba(255,255,255,0.09);
  }
  :root[data-theme="light"] {
    --paper: #FFFFFF; --ink: #0F3192; --slate: #576FB3;
    --rule: #DCE3F5; --card: #F3EBFF; --panel: #E8D7FF;
  }
  [hidden] { display: none !important; }
  body {
    background: var(--paper); color: var(--ink);
    font-family: "Raleway", "Filson Pro", "Avenir Next", "Segoe UI", Helvetica, Arial, sans-serif;
    font-size: 1.02rem; font-weight: 500; line-height: 1.6; margin: 0;
  }
  .shell { display: grid; grid-template-columns: 15rem minmax(0, 1fr); gap: 2rem; max-width: none; margin: 0; padding: 1.6rem 2rem 6rem; }
  @media (max-width: 52rem) { .shell { grid-template-columns: 1fr; gap: 1.5rem; padding-top: 1.5rem; } }

  nav { position: sticky; top: 4rem; align-self: start; display: flex; flex-direction: column; gap: 0.1rem;
        max-height: calc(100vh - 5.5rem); overflow-y: auto; overscroll-behavior: contain;
        background: var(--panel); border-radius: 10px; padding: 1.1rem 1rem; }
  @media (prefers-color-scheme: light) { nav { color: var(--ink); } }
  @media (max-width: 52rem) { nav { position: static; } }
  .navlabel { font-size: 0.66rem; font-weight: 700; letter-spacing: 0.11em; text-transform: uppercase; color: var(--ink); opacity: 0.7; margin-bottom: 0.6rem; }
  .navgroup { font-size: 0.64rem; font-weight: 700; letter-spacing: 0.11em; text-transform: uppercase; color: var(--ink); opacity: 0.6; margin: 1rem 0 0.3rem; }
  .navsub { font-size: 0.85rem; font-weight: 700; margin: 0.7rem 0 0.25rem; }
  nav a { display: block; color: inherit; text-decoration: none; font-size: 0.93rem; font-weight: 500;
          padding: 0.32rem 0.5rem; border-radius: 5px; }
  nav a.ind { padding-left: 0.9rem; font-weight: 400; }
  nav a.ind2 { padding-left: 1.7rem; font-weight: 400; font-size: 0.9rem; }
  nav a.ext { font-weight: 400; font-size: 0.88rem; opacity: 0.8; }
  nav a:hover { background: rgba(15,49,146,0.08); }
  @media (prefers-color-scheme: dark) { nav a:hover { background: rgba(255,255,255,0.1); } }
  nav a.active { background: var(--ink); color: var(--paper); font-weight: 700; }

  main { min-width: 0; }
  .label { font-size: 0.7rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--slate); }
  h1 { font-size: clamp(1.6rem, 4vw, 2.15rem); line-height: 1.15; font-weight: 500; margin: 0.5rem 0 2rem; }
  h2 { font-size: 1.4rem; font-weight: 600; margin: 3rem 0 1.1rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--ink); }
  h3.ch { font-size: 1.08rem; font-weight: 700; margin: 2rem 0 0.55rem; }
  h3.part { font-size: 1rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; margin: 2.2rem 0 1rem; color: var(--slate); }
  p { margin: 0 0 1rem; }
  p.plain, p.plain strong { font-weight: 400; }
  p.plain strong { font-weight: 700; }
  a { color: var(--ink); text-decoration-color: var(--sky); text-decoration-thickness: 2px; }
  ul, ol { padding-left: 1.25rem; margin: 0.3rem 0 1rem; font-weight: 400; }
  li { margin-bottom: 0.45rem; }
  li strong { font-weight: 700; }
  .fw { margin: 0 0 1.4rem; padding-left: 1rem; border-left: 3px solid var(--sky); }
  .fw h3 { font-size: 1.03rem; font-weight: 700; margin: 0 0 0.3rem; }
  .fw p { margin: 0 0 0.35rem; font-weight: 400; }
  .fw p:last-child { margin-bottom: 0; }
  .fw p strong, .fw li strong { font-weight: 700; }
  .fw ul { margin: 0.5rem 0; }
  .fw li { margin-bottom: 0.3rem; }
  .fw .how { color: var(--slate); font-size: 0.93rem; }
  .step { margin: 0 0 1.1rem; }
  .step .k { display: inline-block; font-size: 0.68rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
             border-bottom: 3px solid var(--yellow); padding-bottom: 0.15rem; margin-bottom: 0.45rem; }
  .step p { margin: 0 0 0.4rem; font-weight: 400; }
  .step p:last-child { margin-bottom: 0; }
  .pp { background: var(--card); border-radius: 8px; padding: 1rem 1.3rem; margin: 0.5rem 0 0; }
  .pp .r { font-weight: 400; margin: 0 0 0.85rem; }
  .pp .r:last-child { margin-bottom: 0; }
  .pp .r b { font-weight: 700; }
  .sell { background: var(--card); border-radius: 8px; padding: 1.05rem 1.35rem; margin: 0.7rem 0 1.4rem; }
  .sell p { margin: 0; font-weight: 400; }
  .sell p + p { margin-top: 0.5rem; }
  .sell strong { font-weight: 700; }
  .stage { margin: 0 0 1.4rem; padding-left: 1.1rem; border-left: 3px solid var(--sky); }
  .stage .n { font-size: 0.68rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--slate); }
  .stage h3 { font-size: 1.05rem; font-weight: 700; margin: 0.2rem 0 0.35rem; }
  .stage p { margin: 0 0 0.35rem; font-weight: 400; }
  .stage p:last-child { margin-bottom: 0; }
  .stage .out { font-size: 0.92rem; color: var(--slate); }
  .owner { display: inline-block; font-size: 0.64rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
           border-radius: 3px; padding: 0.12rem 0.5rem; margin-left: 0.4rem; background: var(--sky); color: #0F3192; vertical-align: middle; }
  .owner.content { background: var(--yellow); }
  .handoff { background: var(--card); border-radius: 8px; padding: 1.05rem 1.35rem; margin: 1.8rem 0; font-weight: 400; }
  .handoff p { margin: 0; }
  .handoff strong { font-weight: 700; }
  .tlab { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase; margin: 1.8rem 0 0; display: inline-block; }
  .exlab, .opt, .open-q { color: var(--slate); font-size: 0.92rem; font-weight: 400; }
  .exlab { margin: 0.8rem 0 0; }
  .opt { margin-top: 0.5rem; }
  .open-q { margin-top: 0.9rem; }
  .tablewrap { overflow-x: auto; margin: 0.6rem 0 1rem; }
  table { width: 100%; border-collapse: collapse; font-size: 0.92rem; font-weight: 400; min-width: 32rem; }
  table.wide { min-width: 44rem; }
  table.xwide { min-width: 56rem; }
  tr.chosen-row td { background: rgba(255,198,44,0.18); }
  th { font-size: 0.65rem; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase;
       background: var(--ink); color: var(--paper); text-align: left; padding: 0.5rem 0.7rem; }
  td { padding: 0.55rem 0.7rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
  td:first-child { font-weight: 700; }
  .step ul.hookopts { margin: 0.45rem 0 0; padding-left: 1.15rem; }
  .step ul.hookopts li { margin-bottom: 0.28rem; font-weight: 400; font-size: 0.95rem; }
  .pager { display: flex; justify-content: flex-end; gap: 0.4rem; margin: 0 0 1.5rem; }
  .pager a {
    display: inline-flex; align-items: center; justify-content: center;
    width: 2rem; height: 2rem; border: 1px solid var(--rule); border-radius: 6px;
    color: inherit; text-decoration: none; font-size: 1rem; line-height: 1;
  }
  .pager a:hover { border-color: var(--ink); background: var(--card); }
  .pager a[aria-disabled="true"] { opacity: 0.3; pointer-events: none; }
  footer { margin-top: 3.5rem; padding-top: 1.3rem; border-top: 1px solid var(--rule); color: var(--slate); font-size: 0.88rem; font-weight: 400; }
  footer .tagline { display: block; margin-top: 0.4rem; font-weight: 700; color: var(--ink); letter-spacing: 0.02em; }

/* Reference documents (the persuasion canon) */
.doc .wrap { max-width: 46rem;
    margin: 0 auto;
    padding: 4rem 1.5rem 6rem; }
.doc .label { font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink); }
.doc header.masthead { margin-bottom: 3rem; }
.doc header.masthead h1 { font-size: clamp(2.1rem, 5vw, 3rem);
    line-height: 1.12;
    font-weight: 500;
    margin: 0.6rem 0 1rem;
    text-wrap: balance;
    letter-spacing: -0.005em; }
.doc header.masthead .dek { font-size: 1.12rem;
    font-weight: 400;
    color: var(--ink-soft);
    max-width: 40rem;
    margin: 0; }
.doc .eline { margin-top: 1.75rem; }
.doc .eline svg { display: block; max-width: 100%; height: auto; }
.doc .eline path { stroke: var(--sky); }
.doc .thesis { border-top: 3px solid var(--yellow);
    border-bottom: 1px solid var(--rule);
    padding: 1.4rem 0;
    margin: 2.5rem 0;
    font-size: 1.1rem; }
.doc .thesis strong { font-weight: 700; }
.doc nav.toc { background: var(--panel);
    border-radius: 8px;
    padding: 1.5rem 1.75rem;
    margin: 2.5rem 0 3.5rem; }
.doc nav.toc .label { color: var(--cobalt); }
.doc nav.toc .label { color: var(--ink); }
.doc nav.toc ol { margin: 0.75rem 0 0;
    padding-left: 1.3rem;
    columns: 2;
    column-gap: 2.5rem;
    font-size: 0.94rem; }
.doc nav.toc ol { columns: 1; }
.doc nav.toc li { margin-bottom: 0.35rem; break-inside: avoid; }
.doc nav.toc a { color: inherit; text-decoration: none; border-bottom: 1px solid transparent; }
.doc nav.toc a:hover { border-bottom-color: currentColor; }
.doc nav.toc { color: var(--cobalt); }
.doc section { margin-top: 4rem; }
.doc .partnum { font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink);
    display: inline-block;
    border-bottom: 3px solid var(--yellow);
    padding-bottom: 0.2rem; }
.doc h2 { font-size: 1.7rem;
    font-weight: 600;
    line-height: 1.2;
    margin: 0.6rem 0 0.75rem;
    text-wrap: balance; }
.doc .section-intro { color: var(--ink-soft);
    font-weight: 400;
    margin: 0 0 1.75rem; }
.doc h3 { font-size: 1.16rem;
    font-weight: 700;
    margin: 2.25rem 0 0.5rem; }
.doc p { margin: 0 0 1rem; }
.doc a { color: var(--ink); text-decoration-color: var(--sky); text-decoration-thickness: 2px; }
.doc .mech { margin: 1.6rem 0; padding-left: 1.1rem; border-left: 3px solid var(--sky); }
.doc .mech h4 { font-size: 1.03rem;
    font-weight: 700;
    margin: 0 0 0.3rem; }
.doc .mech p { margin: 0 0 0.4rem; font-weight: 400; }
.doc .mech .indtc { color: var(--slate);
    font-size: 0.97rem; }
.doc .mech .indtc::before { content: "In DTC — ";
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink); }
.doc .callout { background: var(--card);
    border-radius: 8px;
    padding: 1.2rem 1.5rem;
    margin: 1.75rem 0;
    font-weight: 400; }
.doc .callout p:last-child { margin-bottom: 0; }
.doc .callout strong { font-weight: 700; }
.doc .callout { color: var(--cobalt); }
.doc table { width: 100%;
    border-collapse: collapse;
    font-size: 0.94rem;
    font-weight: 400;
    font-variant-numeric: tabular-nums; }
.doc .tablewrap { overflow-x: auto; margin: 1.5rem 0; }
.doc .tablewrap table { min-width: 34rem; }
.doc th { font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: var(--th-bg);
    color: var(--th-text);
    text-align: left;
    padding: 0.55rem 0.9rem; }
.doc td { padding: 0.6rem 0.9rem;
    border-bottom: 1px solid var(--rule);
    vertical-align: top; }
.doc tr:nth-child(odd) td { background: var(--lavender-soft); }
.doc td:first-child { font-weight: 700; white-space: nowrap; }
.doc .formula { background: var(--code-bg);
    border-radius: 8px;
    padding: 1.1rem 1.4rem;
    margin: 1.5rem 0;
    font-size: 1rem;
    text-align: center;
    font-weight: 600; }
.doc .formula { color: var(--cobalt); }
.doc .formula .frac { display: inline-block; text-align: center; vertical-align: middle; }
.doc .formula .frac .top { display: block; border-bottom: 2px solid currentColor; padding: 0 0.6rem 0.15rem; }
.doc .formula .frac .bot { display: block; padding: 0.15rem 0.6rem 0; }
.doc ul, .doc ol { padding-left: 1.4rem; margin: 0 0 1rem; font-weight: 400; }
.doc li { margin-bottom: 0.35rem; }
.doc li strong { font-weight: 700; }
.doc .canon li { margin-bottom: 0.6rem; }
.doc .canon .why { color: var(--slate); font-size: 0.94rem; }