:root {
  --bg: #f7f6f2; --fg: #1d1c1a; --muted: #6b6a66; --card: #ffffff; --line: #e6e3dc; --accent: #b45309; --accent-fg: #fff;
  --danger: #b91c1c; --warn: #92400e; --link: #1d4ed8; --code: #f0ede6; --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #131313; --fg: #ebe8e1; --muted: #9a978f; --card: #1c1c1c; --line: #2b2b2b; --accent: #f59e0b; --accent-fg: #111; --danger: #f87171; --warn: #fbbf24; --link: #93c5fd; --code: #242424; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
main { max-width: 760px; margin: 0 auto; padding: 16px 16px 90px; }
main.wide { max-width: 1100px; }
h1 { font-size: 1.6rem; margin: .4em 0 .6em; line-height: 1.2; }
h2 { font-size: 1.15rem; margin: 1.2em 0 .5em; }
h3 { font-size: 1rem; margin: 1em 0 .4em; }
p { margin: .5em 0; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.big { font-size: 1.3rem; font-weight: 600; }
.err { color: var(--danger); }
.warn { color: var(--warn); }
code { background: var(--code); padding: .1em .35em; border-radius: 4px; font-size: .9em; }
pre { background: var(--code); padding: 10px; border-radius: var(--radius); overflow-x: auto; }
blockquote { margin: .6em 0; padding: .4em .9em; border-left: 3px solid var(--accent); background: var(--card); border-radius: 0 var(--radius) var(--radius) 0; }
hr { border: 0; border-top: 1px solid var(--line); margin: 1.2em 0; }
table { border-collapse: collapse; width: 100%; font-size: .93rem; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
.tw { overflow-x: auto; }
.props th { width: 34%; font-weight: 500; }

/* header */
.top { display: flex; align-items: center; gap: 14px; padding: 10px 16px; border-bottom: 1px solid var(--line); background: var(--card); position: sticky; top: 0; z-index: 5; flex-wrap: wrap; }
.brand { font-weight: 800; letter-spacing: .02em; color: var(--fg); font-size: 1.1rem; }
nav { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }
nav a, nav summary { padding: 4px 8px; border-radius: 6px; color: var(--fg); font-size: .95rem; cursor: pointer; }
nav a.on { background: var(--accent); color: var(--accent-fg); }
nav a:hover { text-decoration: none; background: var(--line); }
nav a.on:hover { background: var(--accent); }
.more { position: relative; }
.more summary { list-style: none; color: var(--muted); }
.more summary::-webkit-details-marker { display: none; }
.more > div { position: absolute; right: 0; top: 30px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 6px; display: flex; flex-direction: column; min-width: 160px; box-shadow: 0 8px 24px rgba(0,0,0,.15); }
.status { margin-left: auto; font-size: .8rem; color: var(--muted); display: flex; gap: 10px; flex-wrap: wrap; }
.status span { white-space: nowrap; }
.flash { max-width: 760px; margin: 12px auto 0; padding: 8px 14px; background: var(--card); border: 1px solid var(--accent); border-radius: var(--radius); font-size: .95rem; }
footer .fab { position: fixed; right: 18px; bottom: 18px; width: 52px; height: 52px; border-radius: 50%; background: var(--accent); color: var(--accent-fg); display: flex; align-items: center; justify-content: center; font-size: 28px; box-shadow: 0 6px 18px rgba(0,0,0,.25); }
footer .fab:hover { text-decoration: none; }

/* cards & forms */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; margin: 12px 0; }
.card.narrow { max-width: 360px; margin: 12vh auto; }
.card > h2:first-child { margin-top: 0; }
details.card summary { cursor: pointer; color: var(--muted); }
label { display: block; font-size: .8rem; color: var(--muted); margin: 10px 0 2px; }
input[type=text], input[type=password], input[type=date], input:not([type]), textarea, select { width: 100%; padding: 9px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--fg); font: inherit; }
textarea { resize: vertical; }
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: transparent; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 10px; }
.row.between { justify-content: space-between; }
.inline { display: inline; }
.btn { border: 1px solid var(--line); background: var(--card); color: var(--fg); padding: 8px 14px; border-radius: 8px; font: inherit; cursor: pointer; }
.btn.primary { background: var(--accent); color: var(--accent-fg); border-color: transparent; }
.btn.danger { color: var(--danger); }
.btn.ghost { background: transparent; }
.btn:hover { filter: brightness(.96); text-decoration: none; }
.linkish { background: none; border: 0; color: var(--fg); padding: 4px 8px; text-align: left; font: inherit; cursor: pointer; }
.checks, .radios { display: flex; flex-wrap: wrap; gap: 6px 14px; margin: 4px 0; }
.chk { display: inline-flex; align-items: center; gap: 6px; font-size: .95rem; color: var(--fg); margin: 0; }
.tf { display: none; }
.tf.show { display: block; }
.typepick .radios { gap: 6px 10px; }
.badge { display: inline-block; font-size: .72rem; padding: 1px 7px; border-radius: 999px; background: color-mix(in srgb, var(--c) 18%, transparent); color: var(--c); border: 1px solid color-mix(in srgb, var(--c) 45%, transparent); vertical-align: middle; font-weight: 600; }
.tag { font-size: .72rem; padding: 1px 6px; border-radius: 4px; background: var(--line); }
.tag.forming, .tag.revived { background: #dcfce7; color: #166534; }
.tag.input-only, .tag.drifting, .tag.unserved { background: #fef3c7; color: #92400e; }
.tag.dormant { background: #e5e7eb; color: #374151; }
.tag.alive { background: #dcfce7; color: #166534; }
.bar { display: inline-block; width: 90px; height: 8px; background: var(--line); border-radius: 4px; vertical-align: middle; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--accent); }
.items { list-style: none; padding: 0; margin: 10px 0; }
.items li { padding: 8px 0; border-bottom: 1px solid var(--line); }
.items li.item { display: flex; justify-content: space-between; gap: 10px; align-items: flex-start; }
.items li.item p { margin: 0; }
ul.plain { list-style: none; padding: 0; }
ul.plain li { padding: 6px 0; border-bottom: 1px solid var(--line); }
.doc h1 { font-size: 1.4rem; } .doc h2 { font-size: 1.15rem; margin-top: 1.4em; } .doc h3 { font-size: 1rem; }
.doc ul, .doc ol { padding-left: 1.3em; }
.doc li { margin: .15em 0; }
.doc code { font-size: .85em; }
.doc.reveal { padding: 4px 0 4px 12px; border-left: 3px solid var(--line); }
.note h1 { margin-top: .2em; }
.crumbs { display: flex; gap: 8px; align-items: center; margin: 0; }
.wl.missing { color: var(--muted); border-bottom: 1px dashed var(--muted); }
.steps { display: flex; gap: 6px; flex-wrap: wrap; margin: -4px 0 12px; }
.steps span { font-size: .78rem; padding: 2px 9px; border-radius: 999px; background: var(--line); color: var(--muted); }
.steps span.on { background: var(--accent); color: var(--accent-fg); }
.steps span.past { opacity: .5; text-decoration: line-through; }
.prompt { font-size: 1.05rem; }
.trio { padding: 8px 0; border-top: 1px solid var(--line); }
.trio h3 { margin: .4em 0; }
canvas.graph { width: 100%; height: 72vh; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); touch-action: none; }
.legend { margin-top: 8px; display: flex; gap: 6px; flex-wrap: wrap; }
@media (max-width: 640px) {
  .status { display: none; }
  .top { gap: 8px; }
  nav a, nav summary { padding: 4px 6px; font-size: .9rem; }
  main { padding: 12px 12px 90px; }
}

/* v2: knowledge base */
.panels { columns: 3 320px; column-gap: 14px; }
.panel { break-inside: avoid; margin-bottom: 14px; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; min-width: 0; }
.panel > h2 { margin: 0 0 4px; font-size: 1.05rem; }
.panel .about { margin: 0 0 8px; }
.note-card { padding: 8px 10px; margin: 6px 0; background: var(--bg); }
.note-card.flagged { border-color: var(--warn); }
.note-card .title { font-weight: 600; color: var(--fg); }
.note-card .doc { margin-top: 4px; color: var(--muted); }
.topic { font-size: .8rem; color: var(--muted); margin-left: 4px; }
.topic:hover { color: var(--accent); text-decoration: none; }
.conns { margin-top: 6px; display: flex; flex-wrap: wrap; gap: 4px 10px; font-size: .85rem; }
.conn i { color: var(--muted); font-style: normal; font-size: .78rem; margin-right: 2px; }
.expand { margin: 6px 0 0; padding-left: 1.1em; font-size: .9rem; }
.expand i { color: var(--muted); font-style: normal; font-size: .78rem; }
.missing { color: var(--muted); border-bottom: 1px dashed var(--muted); }
.pairs { padding-left: 1.1em; }
.badge { text-decoration: none; }
.badge:hover { text-decoration: none; filter: brightness(1.1); }
.grow { flex: 1 1 200px; min-width: 0; }
input.w { width: 70px; }
input.why { flex: 1 1 160px; }
select, .inline-sel { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--fg); font: inherit; }
.proposal { margin-top: 12px; }
.proposal h3 { margin: 14px 0 6px; }
.pnote { margin: 8px 0; }
.plink { padding: 6px 0; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.plink .ref { flex: 1 1 180px; min-width: 0; font-size: .95rem; }
.row.sticky { position: sticky; bottom: 0; background: var(--card); padding: 10px 0; border-top: 1px solid var(--line); margin-top: 8px; }
.conn-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; padding: 6px 0; border-bottom: 1px solid var(--line); }
.conn-row i { color: var(--muted); font-style: normal; font-size: .8rem; min-width: 84px; }
.conn-row .w { color: var(--muted); font-size: .8rem; }
.btn.tiny { padding: 0 7px; font-size: .8rem; line-height: 1.6; }
.connect { align-items: center; }
.tabs a { margin-right: 10px; padding: 4px 8px; border-radius: 6px; }
.tabs a.on { background: var(--accent); color: var(--accent-fg); }
.doc.small { font-size: .92rem; }

.plink select.inline-sel, .connect select.inline-sel, .row select.inline-sel { width: auto; }
.plink { display: grid; grid-template-columns: 24px 1fr auto 1fr 70px 1.2fr; gap: 6px 10px; align-items: center; }
.plink input.why { width: 100%; }
@media (max-width: 720px) { .plink { grid-template-columns: 24px 1fr; } .plink .why { grid-column: 1 / -1; } }
/* book (app-layout pages) */
.cover h1 { font-size: 2rem; margin: .2em 0 .1em; }
.preface { margin: 10px 0 14px; }
.toc { padding-left: 1.4em; }
.toc li { margin: 8px 0; }
.toc a { color: var(--fg); text-decoration: none; display: block; }
.toc .ct { font-weight: 600; }
.toc .cs { display: block; color: var(--muted); font-size: .92rem; }
.toc .cm { display: block; color: var(--muted); font-size: .8rem; }
.marks li { padding: 6px 0; }
.versions li { padding: 8px 0; border-bottom: 1px solid var(--line); }
.tag.done { background: #dcfce7; color: #166534; } .tag.failed { background: #fee2e2; color: #7f1d1d; } .tag.running { background: #fef3c7; color: #92400e; } .tag.queued { background: var(--line); }
pre.log { font-size: .8rem; max-height: 320px; overflow: auto; }
.diff ins { background: #dcfce7; color: #14532d; text-decoration: none; }
.diff del { background: #fee2e2; color: #7f1d1d; }
@media (prefers-color-scheme: dark) { .diff ins { background: #14532d; color: #dcfce7; } .diff del { background: #7f1d1d; color: #fee2e2; } }
/* share links */
.share-form { align-items: flex-end; flex-wrap: wrap; gap: 10px; }
.share-form label { display: block; font-size: 12px; color: var(--muted, #6b7280); }
.shares li { padding: 6px 0; border-bottom: 1px solid var(--line, #e5e7eb); }
.sharelink { user-select: all; -webkit-user-select: all; word-break: break-all; }
.toc li { position: relative; }
.toc .tocedit { position: absolute; right: 8px; top: 12px; opacity: .55; }