/* ============================================================
   M&A Foundations — design system
   Editorial "paper, ink & copper" aesthetic. No external assets.
   ============================================================ */

:root {
  --paper:    #faf6ee;
  --paper-2:  #f1eadb;
  --card:     #fffdf7;
  --ink:      #1d2a3a;
  --ink-2:    #46546b;
  --ink-3:    #8b93a3;
  --line:     #ddd3c0;
  --line-2:   #e9e2d3;
  --accent:   #b45f2a;   /* burnished copper */
  --accent-2: #8a4720;
  --accent-soft: #f3e2d3;
  --gold:     #c39a3f;
  --ok:       #3e7d54;
  --ok-soft:  #e2eee4;
  --bad:      #a63d2f;
  --bad-soft: #f4e0dc;
  --svg-node: #f1eadb;
  --shadow:   0 1px 2px rgba(29,42,58,.06), 0 8px 24px rgba(29,42,58,.07);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: "Avenir Next", "Avenir", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:    #161c27;
    --paper-2:  #11161f;
    --card:     #1d2532;
    --ink:      #e9e3d3;
    --ink-2:    #b9b3a2;
    --ink-3:    #7d8492;
    --line:     #333e50;
    --line-2:   #29323f;
    --accent:   #d98d52;
    --accent-2: #e8a76f;
    --accent-soft: #38302a;
    --gold:     #d3ac5c;
    --ok:       #7cb98f;
    --ok-soft:  #223328;
    --bad:      #d98577;
    --bad-soft: #3a2622;
    --svg-node: #28334a;
    --shadow:   0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
  }
}

/* Forced themes (user choice via the sidebar toggle) override the OS preference.
   :root[data-theme=…] has higher specificity than the :root blocks above. */
:root[data-theme="light"] {
  --paper:    #faf6ee;
  --paper-2:  #f1eadb;
  --card:     #fffdf7;
  --ink:      #1d2a3a;
  --ink-2:    #46546b;
  --ink-3:    #8b93a3;
  --line:     #ddd3c0;
  --line-2:   #e9e2d3;
  --accent:   #b45f2a;
  --accent-2: #8a4720;
  --accent-soft: #f3e2d3;
  --gold:     #c39a3f;
  --ok:       #3e7d54;
  --ok-soft:  #e2eee4;
  --bad:      #a63d2f;
  --bad-soft: #f4e0dc;
  --svg-node: #f1eadb;
  --shadow:   0 1px 2px rgba(29,42,58,.06), 0 8px 24px rgba(29,42,58,.07);
}

:root[data-theme="dark"] {
  --paper:    #161c27;
  --paper-2:  #11161f;
  --card:     #1d2532;
  --ink:      #e9e3d3;
  --ink-2:    #b9b3a2;
  --ink-3:    #7d8492;
  --line:     #333e50;
  --line-2:   #29323f;
  --accent:   #d98d52;
  --accent-2: #e8a76f;
  --accent-soft: #38302a;
  --gold:     #d3ac5c;
  --ok:       #7cb98f;
  --ok-soft:  #223328;
  --bad:      #d98577;
  --bad-soft: #3a2622;
  --svg-node: #28334a;
  --shadow:   0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}

/* ---------- layout ---------- */
.layout { display: flex; min-height: 100vh; }
.content {
  flex: 1;
  min-width: 0;
  padding: 56px 48px 80px;
}
.content > * , .content .quiz-section { max-width: 760px; margin-left: auto; margin-right: auto; }

/* ---------- sidebar ---------- */
#sidebar {
  width: 304px;
  flex-shrink: 0;
  background: var(--paper-2);
  border-right: 1px solid var(--line-2);
  padding: 28px 20px 40px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  font-family: var(--sans);
  font-size: 13.5px;
  scrollbar-width: thin;
}
a.sb-platform {
  display: block; margin: -6px 0 10px; padding: 0 2px;
  font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-3); text-decoration: none;
}
a.sb-platform:hover { color: var(--accent); }
.sb-brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); margin-bottom: 6px; }
.sb-brand svg { flex-shrink: 0; }
.sb-brand .t { font-family: var(--serif); font-size: 19px; font-weight: 600; letter-spacing: .01em; line-height: 1.2; }
.sb-brand .s { font-size: 11px; color: var(--ink-3); letter-spacing: .08em; text-transform: uppercase; }
.sb-progress { display: flex; align-items: center; gap: 10px; margin: 14px 0 8px; padding: 10px 12px; background: var(--card); border: 1px solid var(--line-2); border-radius: 10px; }
.sb-progress .lbl { color: var(--ink-2); line-height: 1.35; }
.sb-progress .lbl b { color: var(--ink); }
.sb-user {
  display: flex; align-items: center; gap: 9px;
  margin: 0 0 6px; padding: 9px 12px;
  background: var(--card); border: 1px solid var(--line-2); border-radius: 10px;
}
.sb-user svg { flex-shrink: 0; }
.sb-user .u-name { font-weight: 700; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.link-btn {
  background: none; border: none; padding: 0; cursor: pointer;
  font-family: var(--sans); font-size: 11.5px; font-weight: 700;
  letter-spacing: .04em; color: var(--accent-2);
}
.link-btn:hover { color: var(--accent); }
.sb-user-panel {
  background: var(--card); border: 1px solid var(--line-2); border-radius: 10px;
  padding: 10px 12px; margin-bottom: 6px; display: grid; gap: 7px;
  /* one column that may not grow past the card: without minmax(0,…) a long email in a
     profile row stretched the grid track and pushed every button out of the panel */
  grid-template-columns: minmax(0, 1fr);
}
.sb-user-panel .prof-row { display: flex; gap: 6px; align-items: center; }
.sb-user-panel button.prof {
  flex: 1; min-width: 0; text-align: left; cursor: pointer; font: inherit; font-size: 12.5px;
  background: var(--paper); border: 1px solid var(--line-2); border-radius: 8px;
  padding: 6px 10px; color: var(--ink-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.sb-user-panel button.prof:hover { border-color: var(--accent); }
.sb-user-panel button.prof.active { border-color: var(--accent); color: var(--ink); font-weight: 700; box-shadow: inset 2px 0 0 var(--accent); }
.sb-user-panel button.x {
  background: none; border: none; color: var(--ink-3); cursor: pointer;
  font-size: 15px; line-height: 1; padding: 2px 4px; flex-shrink: 0;
}
.sb-user-panel button.x:hover { color: var(--bad); }
.sb-user-panel input {
  flex: 1; min-width: 0; font: inherit; font-size: 12.5px; color: var(--ink);
  background: var(--paper); border: 1px solid var(--line-2); border-radius: 8px; padding: 6px 10px;
}
.sb-user-panel input:focus { outline: none; border-color: var(--accent); }
.sb-user-panel .row2 { display: flex; gap: 6px; }
.sb-theme {
  display: flex; align-items: center; gap: 6px;
  margin: 0 0 6px; padding: 7px 12px;
  background: var(--card); border: 1px solid var(--line-2); border-radius: 10px;
}
.sb-theme .th-lbl { font-size: 10.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin-right: auto; }
button.th-btn {
  font-family: var(--sans); font-size: 11px; font-weight: 700; cursor: pointer;
  padding: 4px 10px; border-radius: 100px;
  border: 1px solid var(--line-2); background: var(--paper); color: var(--ink-3);
}
button.th-btn:hover { border-color: var(--accent); color: var(--accent-2); }
button.th-btn.active { border-color: var(--accent); color: var(--accent-2); background: var(--accent-soft); }
.btn-sm {
  font-family: var(--sans); font-size: 11.5px; font-weight: 700; cursor: pointer;
  flex: 1; padding: 6px 9px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--paper); color: var(--ink-2);
}
.btn-sm:hover { border-color: var(--accent); color: var(--accent-2); }
.sb-cloud { border-top: 1px dashed var(--line-2); padding-top: 9px; margin-top: 2px; display: grid; gap: 6px; grid-template-columns: minmax(0, 1fr); }
.cloud-hd {
  margin: 0; font-size: 10px; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3);
}
.cloud-line { margin: 0; font-size: 11.5px; line-height: 1.45; color: var(--ink-3); overflow-wrap: break-word; }
.cloud-line b { color: var(--ink-2); }
.site-foot .copyright { margin-top: 6px; }
.sb-module { margin-top: 18px; }
.sb-mod-title { font-size: 10.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 6px 10px; font-weight: 600; }
a.sb-ch {
  display: flex; align-items: baseline; gap: 9px;
  padding: 6px 10px; border-radius: 8px;
  color: var(--ink-2); text-decoration: none; line-height: 1.35;
}
a.sb-ch:hover { background: var(--card); color: var(--ink); }
a.sb-ch.active { background: var(--card); color: var(--ink); box-shadow: inset 2.5px 0 0 var(--accent); font-weight: 600; }
a.sb-ch .n { font-family: var(--mono); font-size: 11px; color: var(--ink-3); min-width: 16px; }
a.sb-ch .tick { margin-left: auto; color: var(--ok); font-size: 12px; visibility: hidden; }
a.sb-ch.done .tick { visibility: visible; }
.sb-extras { margin-top: 22px; border-top: 1px solid var(--line-2); padding-top: 16px; display: grid; gap: 6px; }
a.sb-extra {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: 10px;
  background: var(--card); border: 1px solid var(--line-2);
  color: var(--ink); text-decoration: none; font-weight: 600;
}
a.sb-extra:hover { border-color: var(--accent); }
a.sb-extra.active { border-color: var(--accent); box-shadow: inset 2.5px 0 0 var(--accent); }
a.sb-extra .ic {
  font-family: var(--serif); color: var(--accent); font-size: 15px; font-weight: 700;
  width: 22px; text-align: center; flex-shrink: 0;
}
a.sb-extra .tick { margin-left: auto; color: var(--ok); font-size: 12px; visibility: hidden; }
a.sb-extra.done .tick { visibility: visible; }
.sb-foot { margin-top: 24px; color: var(--ink-3); font-size: 11px; line-height: 1.5; padding: 0 10px; }

/* mobile nav */
.menu-btn {
  display: none;
  position: fixed; top: 14px; left: 14px; z-index: 60;
  width: 42px; height: 42px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  font-size: 18px; cursor: pointer; box-shadow: var(--shadow);
}
.sb-overlay { display: none; }
@media (max-width: 980px) {
  .menu-btn { display: block; }
  #sidebar {
    position: fixed; left: 0; top: 0; z-index: 55;
    transform: translateX(-104%); transition: transform .25s ease;
    box-shadow: 0 0 40px rgba(0,0,0,.25);
  }
  body.nav-open #sidebar { transform: translateX(0); }
  body.nav-open .sb-overlay {
    display: block; position: fixed; inset: 0; z-index: 50;
    background: rgba(20,25,35,.45);
  }
  .content { padding: 76px 22px 64px; }
}

/* ---------- typography ---------- */
h1 { font-family: var(--serif); font-size: 2.35rem; line-height: 1.15; font-weight: 600; letter-spacing: -.01em; margin: .2em 0 .35em; }
h2 { font-family: var(--serif); font-size: 1.5rem; line-height: 1.25; font-weight: 600; margin: 2.2em 0 .6em; }
h3 { font-family: var(--serif); font-size: 1.17rem; font-weight: 600; margin: 1.8em 0 .5em; }
h2 .sec-n { color: var(--accent); font-family: var(--mono); font-size: .8em; margin-right: .55em; font-weight: 500; }
p { margin: 0 0 1.05em; }
a { color: var(--accent-2); text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent); text-underline-offset: 2px; }
a:hover { color: var(--accent); }
.kicker {
  font-family: var(--sans); font-size: 12px; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase; color: var(--accent);
  margin: 0 0 10px;
}
.lede { font-size: 1.18rem; line-height: 1.6; color: var(--ink-2); margin-bottom: 1.2em; }
.ch-header { margin-bottom: 34px; padding-bottom: 8px; }
.ch-head-row { display: flex; gap: 26px; align-items: flex-start; }
.ch-head-row .ch-head-main { flex: 1; min-width: 0; }
.ch-art { flex-shrink: 0; margin-top: 8px; }
@media (max-width: 640px) { .ch-art { display: none; } }
.meta-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; font-family: var(--sans); }
.chip {
  font-size: 11.5px; font-weight: 600; letter-spacing: .04em;
  color: var(--ink-2); background: var(--paper-2);
  border: 1px solid var(--line-2); border-radius: 100px; padding: 3px 11px;
}
dfn.term, .term { font-style: normal; font-weight: 600; border-bottom: 1.5px dotted var(--accent); }
hr { border: none; border-top: 1px solid var(--line-2); margin: 2.4em 0; }
ul, ol { padding-left: 1.35em; margin: 0 0 1.1em; }
li { margin-bottom: .4em; }
strong { font-weight: 650; }

/* ---------- boxes ---------- */
.box {
  margin: 1.5em 0; padding: 16px 20px 13px;
  background: var(--card); border: 1px solid var(--line-2);
  border-left: 3px solid var(--accent); border-radius: 0 12px 12px 0;
  box-shadow: var(--shadow);
}
.box p:last-child { margin-bottom: .2em; }
.box-tag {
  font-family: var(--sans); font-size: 10.5px; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase; color: var(--accent);
  margin: 0 0 .5em;
}
.box.keypoint { border-left-color: var(--accent); }
.box.example  { border-left-color: var(--gold); }
.box.example .box-tag { color: var(--gold); }
.box.pitfall  { border-left-color: var(--bad); }
.box.pitfall .box-tag { color: var(--bad); }
.box.drafting { border-left-color: var(--ink-3); }
.box.drafting .box-tag { color: var(--ink-3); }
.box.drafting code, .box.drafting .quote { font-family: var(--serif); }

/* ---------- clause card (SPA quotes) ---------- */
.clause-card {
  margin: 1.6em 0; padding: 0;
  background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; overflow: hidden; box-shadow: var(--shadow);
}
.clause-card figcaption {
  font-family: var(--sans); font-size: 12px; font-weight: 700;
  letter-spacing: .06em; color: var(--ink-2);
  background: var(--paper-2); border-bottom: 1px solid var(--line-2);
  padding: 9px 18px;
}
.clause-card .clause-no { color: var(--accent); font-family: var(--mono); margin-right: 6px; }
.clause-card blockquote {
  margin: 0; padding: 16px 20px 14px;
  font-size: .95em; line-height: 1.62; color: var(--ink);
}
.clause-card blockquote p { margin-bottom: .7em; }
.clause-card blockquote p:last-child { margin-bottom: 0; }
.clause-card .clause-link {
  display: block; padding: 9px 18px 11px;
  font-family: var(--sans); font-size: 12.5px; font-weight: 700;
  text-decoration: none; border-top: 1px dashed var(--line-2);
}

/* ---------- diagrams ---------- */
figure.diagram {
  margin: 1.8em 0; padding: 22px 20px 14px;
  background: var(--card); border: 1px solid var(--line-2);
  border-radius: 14px; box-shadow: var(--shadow); text-align: center;
}
figure.diagram svg { max-width: 100%; height: auto; }
figure.diagram figcaption {
  font-family: var(--sans); font-size: 12.5px; color: var(--ink-3);
  margin-top: 10px; text-align: center;
}
.svg-t  { font-family: var(--sans); font-size: 13px; fill: var(--ink); font-weight: 600; }
.svg-t2 { font-family: var(--sans); font-size: 11.5px; fill: var(--ink-2); }
.svg-t3 { font-family: var(--sans); font-size: 10.5px; fill: var(--ink-3); }
.svg-ta { font-family: var(--sans); font-size: 11.5px; fill: var(--accent); font-weight: 700; letter-spacing: .06em; }
.svg-box { fill: var(--svg-node); stroke: var(--line); }
.svg-box2 { fill: var(--accent-soft); stroke: var(--accent); }
.svg-ln { stroke: var(--ink-3); fill: none; }
.svg-lna { stroke: var(--accent); fill: none; }

/* ---------- tables ---------- */
.tbl-wrap { overflow-x: auto; margin: 1.5em 0; }
table.tbl {
  border-collapse: collapse; width: 100%;
  font-family: var(--sans); font-size: 14px; line-height: 1.5;
  background: var(--card); border: 1px solid var(--line-2);
  border-radius: 12px; overflow: hidden;
}
table.tbl th {
  text-align: left; font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-2); background: var(--paper-2);
  padding: 10px 14px; border-bottom: 1px solid var(--line);
}
table.tbl td { padding: 10px 14px; border-bottom: 1px solid var(--line-2); vertical-align: top; }
table.tbl tr:last-child td { border-bottom: none; }

/* ---------- compare cards ---------- */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 1.5em 0; }
@media (max-width: 640px) { .compare { grid-template-columns: 1fr; } }
.compare > div {
  background: var(--card); border: 1px solid var(--line-2);
  border-radius: 12px; padding: 16px 18px 10px; box-shadow: var(--shadow);
  font-size: .95em;
}
.compare h4 {
  margin: 0 0 .6em; font-family: var(--sans); font-size: 13px;
  letter-spacing: .08em; text-transform: uppercase; color: var(--accent);
}
.compare ul { padding-left: 1.15em; }

/* ---------- checklist ---------- */
ul.checklist { list-style: none; padding-left: .2em; }
ul.checklist li { padding-left: 1.6em; position: relative; margin-bottom: .55em; }
ul.checklist li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--ok); font-weight: 700; font-family: var(--sans);
}

/* ---------- pager ---------- */
nav.pager {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
  margin-top: 56px; font-family: var(--sans);
}
nav.pager a {
  display: block; padding: 14px 18px; border-radius: 12px;
  background: var(--card); border: 1px solid var(--line-2);
  text-decoration: none; color: var(--ink); box-shadow: var(--shadow);
}
nav.pager a:hover { border-color: var(--accent); }
nav.pager a .dir { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); display: block; margin-bottom: 3px; }
nav.pager a .t { font-weight: 600; font-size: 14.5px; }
nav.pager a.next { text-align: right; }
nav.pager .spacer { visibility: hidden; }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; font-family: var(--sans); font-weight: 700; font-size: 14.5px;
  background: var(--accent); color: #fdf9f2; border: none; cursor: pointer;
  padding: 11px 24px; border-radius: 100px; text-decoration: none;
  letter-spacing: .02em; box-shadow: var(--shadow);
}
.btn:hover { background: var(--accent-2); color: #fdf9f2; }
.btn.secondary {
  background: var(--card); color: var(--ink); border: 1.5px solid var(--line);
}
.btn.secondary:hover { border-color: var(--accent); color: var(--accent-2); background: var(--card); }

/* ---------- quiz ---------- */
.quiz-section { margin-top: 64px; }
.quiz-head { text-align: center; margin-bottom: 18px; }
.quiz-head .rule { display: flex; align-items: center; gap: 14px; color: var(--ink-3); margin-bottom: 22px; }
.quiz-head .rule::before, .quiz-head .rule::after { content: ""; flex: 1; border-top: 1px solid var(--line); }
.quiz-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 16px; padding: 28px 30px; box-shadow: var(--shadow);
  font-family: var(--sans);
}
@media (max-width: 640px) { .quiz-card { padding: 22px 18px; } }
.quiz-card .q-meta { display: flex; justify-content: space-between; align-items: center; font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 8px; }
.quiz-bar { height: 4px; background: var(--paper-2); border-radius: 4px; overflow: hidden; margin-bottom: 20px; }
.quiz-bar i { display: block; height: 100%; background: var(--accent); border-radius: 4px; transition: width .3s ease; }
.quiz-q { font-family: var(--serif); font-size: 1.16rem; line-height: 1.5; margin: 0 0 18px; font-weight: 600; }
.quiz-opts { display: grid; gap: 10px; }
button.quiz-opt {
  display: flex; gap: 12px; align-items: baseline; text-align: left; width: 100%;
  background: var(--paper); border: 1.5px solid var(--line-2); border-radius: 12px;
  padding: 12px 16px; font: inherit; font-size: 14.5px; line-height: 1.5;
  color: var(--ink); cursor: pointer;
}
button.quiz-opt:hover:not(:disabled) { border-color: var(--accent); }
button.quiz-opt .l {
  font-family: var(--mono); font-size: 12px; font-weight: 700; color: var(--ink-3);
  border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; flex-shrink: 0;
}
button.quiz-opt:disabled { cursor: default; opacity: .75; }
button.quiz-opt.correct { background: var(--ok-soft); border-color: var(--ok); opacity: 1; }
button.quiz-opt.correct .l { color: var(--ok); border-color: var(--ok); }
button.quiz-opt.wrong { background: var(--bad-soft); border-color: var(--bad); opacity: 1; }
button.quiz-opt.wrong .l { color: var(--bad); border-color: var(--bad); }
.quiz-explain {
  margin-top: 16px; padding: 13px 16px; border-radius: 10px;
  background: var(--paper-2); border: 1px solid var(--line-2);
  font-size: 14px; line-height: 1.55; color: var(--ink-2);
}
.quiz-explain b.verdict { display: block; margin-bottom: 4px; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; }
.quiz-explain b.verdict.ok { color: var(--ok); }
.quiz-explain b.verdict.no { color: var(--bad); }
.quiz-next { margin-top: 18px; text-align: right; }
.quiz-intro, .quiz-result { text-align: center; padding: 10px 6px 4px; }
.quiz-intro h3, .quiz-result h3 { margin-top: 0; }
.quiz-intro p, .quiz-result p { color: var(--ink-2); font-size: 14.5px; }
.quiz-best { font-size: 12.5px; color: var(--ink-3); margin-top: 10px; }
.score-ring { margin: 6px auto 12px; }
.score-ring .val { font-family: var(--serif); font-size: 26px; font-weight: 700; fill: var(--ink); }
.score-ring .of { font-family: var(--sans); font-size: 11px; fill: var(--ink-3); }
.quiz-review { text-align: left; margin-top: 20px; border-top: 1px solid var(--line-2); padding-top: 16px; }
.quiz-review h4 { font-family: var(--sans); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 10px; }
.quiz-review .item { font-size: 13.5px; margin-bottom: 12px; color: var(--ink-2); }
.quiz-review .item .q { font-weight: 600; color: var(--ink); }
.pass-note { font-weight: 700; }
.pass-note.ok { color: var(--ok); }
.pass-note.no { color: var(--bad); }

/* ---------- SPA document ---------- */
.spa { font-size: 16px; }
.spa .doc-banner {
  font-family: var(--sans); font-size: 12.5px; line-height: 1.55;
  background: var(--accent-soft); border: 1px solid var(--accent);
  color: var(--ink); border-radius: 12px; padding: 12px 18px; margin: 0 0 30px;
}
.spa-title { text-align: center; margin: 20px 0 6px; }
.spa-title .dt { font-family: var(--sans); font-size: 13px; letter-spacing: .1em; color: var(--ink-2); }
.spa-parties, .spa-recitals { margin: 1.4em 0; }
.spa-toc {
  columns: 2; column-gap: 30px; font-family: var(--sans); font-size: 13.5px;
  background: var(--card); border: 1px solid var(--line-2); border-radius: 14px;
  padding: 20px 26px; margin: 1.8em 0;
}
@media (max-width: 640px) { .spa-toc { columns: 1; } }
.spa-toc a { display: block; padding: 3px 0; text-decoration: none; color: var(--ink-2); break-inside: avoid; }
.spa-toc a:hover { color: var(--accent); }
.spa-toc .n { font-family: var(--mono); font-size: 11px; color: var(--accent); margin-right: 8px; }
.spa h2.spa-h {
  font-size: 1.25rem; margin: 2.4em 0 .7em;
  padding-top: .8em; border-top: 1px solid var(--line-2);
}
.spa h2.spa-h .cn { color: var(--accent); font-family: var(--mono); font-size: .82em; margin-right: .6em; }
.spa-p { position: relative; padding-left: 58px; margin-bottom: .95em; }
.spa-p .pno {
  position: absolute; left: 0; top: .1em;
  font-family: var(--mono); font-size: .8em; color: var(--accent-2); font-weight: 600;
}
.spa-p ol.abc { list-style: none; padding-left: 0; margin-top: .6em; }
.spa-p ol.abc > li { position: relative; padding-left: 40px; margin-bottom: .5em; }
.spa-p ol.abc > li > .lno { position: absolute; left: 4px; font-family: var(--mono); font-size: .8em; color: var(--ink-3); }
@media (max-width: 640px) { .spa-p { padding-left: 44px; } }
.spa-defs dt { font-weight: 700; margin-top: 1em; }
.spa-defs dt .q { color: var(--accent-2); }
.spa-defs dd { margin: .2em 0 .6em 1.4em; }
.spa-note {
  display: inline-block; font-family: var(--sans); font-size: 11px; font-weight: 700;
  letter-spacing: .05em; color: var(--accent-2);
  background: var(--accent-soft); border-radius: 100px; padding: 2px 11px;
  margin-left: 8px; text-decoration: none; vertical-align: 2px; white-space: nowrap;
}
.spa-note:hover { color: var(--accent); }
.spa :target, .spa .flash {
  animation: targetflash 2.4s ease-out 1;
  border-radius: 6px;
}
@keyframes targetflash {
  0% { background: color-mix(in srgb, var(--gold) 38%, transparent); }
  100% { background: transparent; }
}
.spa .sched-part { font-family: var(--sans); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); margin: 1.6em 0 .6em; font-weight: 700; }
.spa table.tbl { font-size: 13.5px; }
.exec-block { margin-top: 3em; border-top: 1px solid var(--line); padding-top: 1.5em; }
.exec-block .sig { margin: 2em 0; }
.exec-block .sigline { display: inline-block; min-width: 300px; border-bottom: 1px solid var(--ink-2); margin-bottom: 4px; font-family: "Snell Roundhand", "Segoe Script", cursive; font-size: 22px; color: var(--ink-2); padding: 0 10px; }
.exec-block .cap { font-family: var(--sans); font-size: 12.5px; color: var(--ink-3); }

/* ---------- index / home ---------- */
.hero { text-align: center; padding: 26px 0 8px; }
.hero h1 { font-size: 3rem; margin: 18px 0 10px; }
@media (max-width: 640px) { .hero h1 { font-size: 2.2rem; } }
.hero .lede { max-width: 620px; margin: 0 auto 22px; }
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin: 22px 0 10px; }
.stats { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 22px; }
/* honest one-line statement of the access model, under the hero CTA on a paid
   edition's home: names what is free and what the edition unlocks. */
.access-note {
  max-width: 40em; margin: 4px auto 0; font-family: var(--sans);
  font-size: 13.5px; line-height: 1.5; color: var(--ink-2);
  border-top: 1px solid var(--line-2); padding-top: 12px;
}
.access-note strong { color: var(--ink); font-weight: 650; }
.cards3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 1.6em 0; }
@media (max-width: 760px) { .cards3 { grid-template-columns: 1fr; } }
.cards3 > div {
  background: var(--card); border: 1px solid var(--line-2); border-radius: 14px;
  padding: 18px 20px 12px; box-shadow: var(--shadow); font-size: .95em;
}
.cards3 h3 { margin: .3em 0 .4em; }
.cards3 .num { font-family: var(--mono); color: var(--accent); font-size: 13px; }
.module-card {
  background: var(--card); border: 1px solid var(--line-2); border-radius: 16px;
  padding: 22px 26px 16px; margin: 18px 0; box-shadow: var(--shadow);
  display: flex; gap: 22px; align-items: flex-start;
}
@media (max-width: 640px) { .module-card { flex-direction: column; gap: 8px; } }
.module-card .mc-emblem { flex-shrink: 0; margin-top: 4px; }
.module-card h3 { margin: 0 0 2px; }
.module-card .mc-kicker { font-family: var(--sans); font-size: 11px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }
.module-card ul { list-style: none; padding: 0; margin: 10px 0 4px; font-family: var(--sans); font-size: 14px; }
.module-card li { margin: 0; }
.module-card li a {
  display: flex; gap: 10px; align-items: baseline; padding: 6px 8px;
  border-radius: 8px; text-decoration: none; color: var(--ink-2);
}
.module-card li a:hover { background: var(--paper-2); color: var(--ink); }
.module-card li a .n { font-family: var(--mono); font-size: 11px; color: var(--ink-3); min-width: 18px; }
.module-card li a .tick { margin-left: auto; color: var(--ok); visibility: hidden; }
.module-card li a.done .tick { visibility: visible; }
.res-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 1.4em 0 2em; }
@media (max-width: 760px) { .res-cards { grid-template-columns: 1fr; } }
.res-cards a {
  display: block; background: var(--card); border: 1.5px solid var(--line);
  border-radius: 14px; padding: 18px 20px; text-decoration: none; color: var(--ink);
  box-shadow: var(--shadow); font-family: var(--sans);
}
.res-cards a:hover { border-color: var(--accent); }
.res-cards .ic { font-family: var(--serif); font-size: 22px; color: var(--accent); font-weight: 700; }
.res-cards h3 { margin: 6px 0 4px; font-size: 1.05rem; }
.res-cards p { font-size: 13px; color: var(--ink-2); margin: 0; }
.case-panel {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 26px 30px 20px; margin: 1.8em 0; box-shadow: var(--shadow);
}
.site-foot {
  margin-top: 70px; padding-top: 20px; border-top: 1px solid var(--line-2);
  font-family: var(--sans); font-size: 12px; color: var(--ink-3); line-height: 1.6;
}

/* ---------- print (mainly for the SPA) ---------- */
@media print {
  #sidebar, .menu-btn, nav.pager, .quiz-section, .spa-note, .doc-banner, .site-foot { display: none !important; }
  .content { padding: 0; }
  body { background: #fff; color: #111; font-size: 12.5px; }
  .spa-p { page-break-inside: avoid; }
}