:root {
  --bg: #fbfaf8;
  --fg: #1d1c1a;
  --muted: #6b6760;
  --line: #e4e0d9;
  --card: #ffffff;
  --accent: #2f5bd3;
  --go: #1f7a4d;
  --maybe: #a26a00;
  --kill: #b3261e;
  --code: #f2efe9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161514;
    --fg: #ecebe8;
    --muted: #a19d96;
    --line: #34322f;
    --card: #1f1e1c;
    --accent: #8aa8ff;
    --go: #5cc58f;
    --maybe: #e2b04a;
    --kill: #ff8a80;
    --code: #2a2926;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 16px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}
.layout { display: grid; grid-template-columns: 270px minmax(0, 1fr); gap: 36px; max-width: 1320px; margin: 0 auto; padding: 32px 24px 80px; }
main { max-width: 900px; min-width: 0; }
main > p, main > ul, main > ol, .idea > p, .idea > ul, .idea > ol { max-width: 760px; }
.toc { position: sticky; top: 16px; align-self: start; max-height: calc(100vh - 32px); overflow: auto; font-size: 14px; line-height: 1.4; padding-right: 12px; scrollbar-gutter: stable; }
.toc summary { font-weight: 600; cursor: pointer; margin-bottom: 8px; }
.toc ol { list-style: none; padding: 0; margin: 0; }
.toc li { margin: 0; }
.toc li.d2 { margin-top: 10px; font-weight: 600; }
.toc li.d3 { padding-left: 12px; }
.toc a { color: var(--muted); text-decoration: none; display: block; padding: 3px 0; }
.toc a:hover { color: var(--fg); }
.top { border-bottom: 1px solid var(--line); margin-bottom: 28px; padding-bottom: 16px; }
.kicker { color: var(--muted); font-size: 14px; margin: 0 0 6px; }
h1 { font-size: 34px; line-height: 1.2; margin: 0 0 12px; text-wrap: balance; letter-spacing: -0.01em; }
h2 { font-size: 26px; line-height: 1.25; margin: 48px 0 12px; padding-top: 12px; border-top: 1px solid var(--line); text-wrap: balance; }
h3 { font-size: 20px; line-height: 1.3; margin: 28px 0 8px; text-wrap: balance; }
h4 { font-size: 17px; margin: 20px 0 6px; }
p, ul, ol { margin: 0 0 14px; }
li { margin: 3px 0; }
a { color: var(--accent); text-underline-offset: 2px; }
strong { font-weight: 650; }
code { background: var(--code); padding: 1px 5px; border-radius: 4px; font-size: 0.9em; }
blockquote { margin: 0 0 14px; padding: 8px 16px; border-left: 3px solid var(--accent); color: var(--muted); background: var(--card); border-radius: 0 6px 6px 0; }
hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }
.howto { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; font-size: 15px; }
.tw { overflow-x: auto; margin: 0 0 16px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; line-height: 1.45; }
th, td { text-align: left; vertical-align: top; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { font-weight: 600; background: var(--code); }
tr:last-child td { border-bottom: 0; }
td { font-variant-numeric: tabular-nums; }
.idea { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 4px 22px 18px; margin: 22px 0; }
.idea-head { display: flex; align-items: baseline; gap: 10px; margin: 18px 0 10px; }
.idea-head h3 { margin: 0; }
.idea-id { font-size: 13px; font-weight: 700; color: var(--accent); border: 1px solid var(--accent); border-radius: 999px; padding: 1px 8px; flex: none; }
.idea .tw { background: var(--bg); }
.fb { border-top: 1px dashed var(--line); margin-top: 16px; padding-top: 14px; }
.summary .fb { border: 1px solid var(--line); border-radius: 10px; padding: 14px; background: var(--card); }
.fb-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
button { font: inherit; font-size: 15px; cursor: pointer; border-radius: 8px; border: 1px solid var(--line); background: var(--bg); color: var(--fg); padding: 8px 14px; min-height: 40px; }
button:hover { border-color: var(--muted); }
button:focus-visible, textarea:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.fb-v[aria-pressed="true"][data-v="go"] { background: var(--go); border-color: var(--go); color: #fff; }
.fb-v[aria-pressed="true"][data-v="maybe"] { background: var(--maybe); border-color: var(--maybe); color: #fff; }
.fb-v[aria-pressed="true"][data-v="kill"] { background: var(--kill); border-color: var(--kill); color: #fff; }
.fb-label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 4px; }
.fb-t { width: 100%; font: inherit; font-size: 16px; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--line); background: var(--bg); color: var(--fg); resize: vertical; }
.fb-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.fb-send, #fb-copy { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.fb-status { font-size: 14px; color: var(--muted); }
.fb-status.ok { color: var(--go); }
.fb-status.err { color: var(--kill); }
.muted { color: var(--muted); font-size: 14px; }
#fb-summary ul { padding-left: 18px; }
.tag { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; border-radius: 4px; padding: 1px 6px; color: #fff; }
.tag.go { background: var(--go); } .tag.maybe { background: var(--maybe); } .tag.kill { background: var(--kill); }
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; gap: 8px; padding: 16px 16px 64px; }
  .toc { position: static; max-height: none; border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; background: var(--card); }
  .toc details:not([open]) summary { margin-bottom: 0; }
  h1 { font-size: 27px; }
  h2 { font-size: 22px; }
  .idea { padding: 2px 14px 14px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

.tw.wide table { font-size: 13.5px; }
.tw.wide th, .tw.wide td { padding: 7px 8px; }
.tw.wide td:nth-child(2) { min-width: 150px; font-weight: 600; }

/* Tabs */
.tabs { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.tabs-in { display: flex; gap: 4px; max-width: 1320px; margin: 0 auto; padding: 8px 24px; overflow-x: auto; scrollbar-width: none; }
.tabs-in::-webkit-scrollbar { display: none; }
.tabs a { flex: none; text-decoration: none; color: var(--muted); font-size: 14.5px; font-weight: 600; padding: 7px 12px; border-radius: 999px; border: 1px solid transparent; white-space: nowrap; }
.tabs a:hover { color: var(--fg); border-color: var(--line); }
.tabs a[aria-current="page"] { color: var(--bg); background: var(--fg); }
html { scroll-padding-top: 64px; }
.toc { top: 64px; max-height: calc(100vh - 80px); }

/* Deep-dive cards on the overview */
.deep-cards h2 { margin-top: 8px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; margin: 0 0 28px; }
.dc { display: flex; flex-direction: column; gap: 6px; text-decoration: none; color: var(--fg); background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px; }
.dc:hover { border-color: var(--accent); }
.dc-tab { font-weight: 700; color: var(--accent); }
.dc-line { font-size: 14.5px; line-height: 1.45; }
.dc-meta { font-size: 13px; color: var(--muted); margin-top: auto; }

/* Diagrams and mockups */
.diagram { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px; margin: 0 0 16px; overflow-x: auto; text-align: center; }
.diagram pre.mermaid { margin: 0; background: none; font-size: 14px; white-space: pre; text-align: left; color: var(--muted); }
.diagram pre.mermaid[data-processed="true"] { text-align: center; }
.diagram svg { max-width: 100%; height: auto; }
.mock { margin: 0 0 18px; }
.mock iframe { width: 100%; height: 680px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.mock-open { display: inline-block; margin-top: 6px; font-size: 14px; }
@media (max-width: 900px) {
  .tabs-in { padding: 8px 12px; }
  .toc { top: auto; }
  .mock iframe { height: 600px; }
}

/* "My take" page */
.verdict-hero { background: var(--card); border: 1px solid var(--line); border-left: 6px solid var(--kill); border-radius: 12px; padding: 18px 20px; margin: 0 0 8px; }
.vh-big { font-size: 26px; line-height: 1.25; font-weight: 700; text-wrap: balance; }
.vh-sub { color: var(--muted); margin-top: 6px; }
.rc { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 12px 10px; margin: 0 0 16px; }
.rc svg { width: 100%; height: auto; display: block; font: 13px/1 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
.rc-grid line { stroke: var(--line); stroke-width: 1; }
.rc-axis text, .rc-v { fill: var(--muted); font-size: 12.5px; }
.rc-l { fill: var(--fg); font-weight: 600; font-size: 14px; }
.rc-target { stroke: var(--fg); stroke-width: 2; stroke-dasharray: 6 5; }
.rc-target-t { fill: var(--fg); font-weight: 700; font-size: 13px; }
.rc-b.test { fill: var(--go); } .rc-b.side { fill: var(--maybe); } .rc-b.skip { fill: var(--kill); }
.rc-b.unsure { opacity: 0.55; }
.rc-legend { display: flex; flex-wrap: wrap; gap: 14px; margin: 6px 4px 0; font-size: 13.5px; color: var(--muted); }
.lg::before { content: ""; display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }
.lg.test::before { background: var(--go); } .lg.side::before { background: var(--maybe); } .lg.skip::before { background: var(--kill); }
.rc-note { font-size: 13.5px; color: var(--muted); margin: 8px 4px 2px; }
.vgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; margin: 0 0 16px; }
.vcard { display: flex; flex-direction: column; gap: 4px; text-decoration: none; color: var(--fg); background: var(--card); border: 1px solid var(--line); border-top: 5px solid var(--line); border-radius: 10px; padding: 12px; }
.vcard:hover { border-color: var(--accent); }
.vcard span:last-child { color: var(--muted); font-size: 14px; line-height: 1.4; }
.vcard.test { border-top-color: var(--go); } .vcard.side { border-top-color: var(--maybe); } .vcard.skip { border-top-color: var(--kill); }
.vbadge { align-self: flex-start; font-size: 11.5px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em; color: #fff; border-radius: 4px; padding: 2px 7px; background: var(--muted); }
.test .vbadge { background: var(--go); } .side .vbadge { background: var(--maybe); } .skip .vbadge { background: var(--kill); }
.why { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; margin: 0 0 16px; }
.why > div { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px; display: flex; flex-direction: column; gap: 4px; }
.why span { color: var(--muted); font-size: 14px; line-height: 1.4; }
/* Verdict banner on deep-dive tabs */
.vbanner { display: flex; gap: 12px; align-items: flex-start; background: var(--card); border: 1px solid var(--line); border-left: 6px solid var(--line); border-radius: 10px; padding: 12px 14px; margin: 4px 0 12px; }
.vbanner.test { border-left-color: var(--go); } .vbanner.side { border-left-color: var(--maybe); } .vbanner.skip { border-left-color: var(--kill); }
.vbanner > div { display: flex; flex-direction: column; gap: 3px; }
.vbanner span:not(.vbadge) { color: var(--muted); font-size: 14px; }
.vbanner .vbadge { margin-top: 2px; flex: none; }
@media (max-width: 900px) { .vh-big { font-size: 21px; } }
@media (max-width: 600px) {
  .rc-l { font-size: 21px; }
  .rc-v, .rc-axis text { font-size: 19px; }
  .rc-target-t { font-size: 19px; }
}
.tabs a.tab-other { color: var(--accent); border-color: var(--line); }
.tabs a.tab-other.first { margin-left: auto; }
.verdict-hero.win { border-left-color: var(--go); }
.rc-v.rc-in { fill: #fff; font-weight: 600; }