:root {
  --bg: #f7f8f6; --surface: #ffffff; --ink: #22302b; --ink-soft: #5c6b64;
  --line: #dde4df; --accent: #128C57; --accent-soft: #e3f2ea;
  --bubble-me: #d9f4e0; --bubble-sys: #ffffff;
  --warn: #b45f06; --warn-soft: #fbf0dd; --chip-build: #1f6fb2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131a17; --surface: #1c2420; --ink: #e4ece7; --ink-soft: #93a49b;
    --line: #2c3833; --accent: #3fbf85; --accent-soft: #1c3129;
    --bubble-me: #1f3d2d; --bubble-sys: #232d28;
    --warn: #e0a458; --warn-soft: #33291a; --chip-build: #5aa4d8;
  }
}
* { box-sizing: border-box; }
body {
  background: var(--bg); color: var(--ink);
  font-family: "Segoe UI", -apple-system, system-ui, sans-serif;
  line-height: 1.55; margin: 0; padding: 2.5rem 1.25rem 4rem;
}
main { max-width: 46rem; margin: 0 auto; }
h1 { font-size: 1.9rem; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 .3rem; text-wrap: balance; }
h2 { font-size: 1.25rem; font-weight: 650; margin: 2.8rem 0 .8rem; letter-spacing: -0.01em; }
h3 { font-size: 1rem; font-weight: 650; margin: 1.4rem 0 .4rem; }
p { margin: .55rem 0; }
a { color: var(--accent); }
.lede { font-size: 1.12rem; color: var(--ink-soft); max-width: 38rem; }
.eyebrow { text-transform: uppercase; letter-spacing: .09em; font-size: .72rem; font-weight: 650; color: var(--accent); }
.topnav { max-width: 46rem; margin: 0 auto 1.6rem; font-size: .85rem; }
.topnav a { text-decoration: none; color: var(--ink-soft); }
.topnav a:hover { color: var(--accent); }
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 10px; padding: 1.1rem 1.25rem; margin: 1rem 0;
}
.chat {
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
  padding: 1rem; margin: 1rem 0; display: flex; flex-direction: column; gap: .5rem;
}
.chat .label { font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-soft); font-weight: 650; margin-bottom: .25rem; }
.msg { max-width: 85%; padding: .5rem .8rem; border-radius: 10px; font-size: .95rem; white-space: pre-line; }
.me  { align-self: flex-end; background: var(--bubble-me); border-bottom-right-radius: 3px; }
.sys { align-self: flex-start; background: var(--bubble-sys); border: 1px solid var(--line); border-bottom-left-radius: 3px; }
.voice { font-style: italic; }
.voice::before { content: "🎤 "; font-style: normal; }
.doc::before { content: "📄 "; }
.alert { border-left: 3px solid var(--warn); background: var(--warn-soft); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: .8rem; margin: 1rem 0; }
.grid .card { margin: 0; }
.grid h3 { margin: 0 0 .3rem; font-size: .95rem; }
.grid p { margin: 0; font-size: .88rem; color: var(--ink-soft); }
.hub-card { display: block; text-decoration: none; color: var(--ink); transition: border-color .15s; }
.hub-card:hover { border-color: var(--accent); }
.hub-card .go { color: var(--accent); font-weight: 650; font-size: .88rem; }
.phase { display: flex; gap: .8rem; align-items: baseline; padding: .55rem 0; border-bottom: 1px solid var(--line); }
.phase:last-child { border-bottom: none; }
.chip { flex: none; font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em;
        padding: .15rem .55rem; border-radius: 99px; }
.chip.now  { background: var(--accent-soft); color: var(--accent); }
.chip.next { background: var(--warn-soft); color: var(--warn); }
.chip.later{ background: transparent; color: var(--ink-soft); border: 1px solid var(--line); }
.phase p { margin: 0; font-size: .92rem; }
ul { padding-left: 1.2rem; }
li { margin: .3rem 0; }
.quote-back { border-left: 3px solid var(--accent); padding-left: .9rem; color: var(--ink-soft); font-style: italic; }
.diagram-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 1rem; }
.foot { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: .85rem; }
/* checklists */
.check { display: flex; gap: .7rem; align-items: flex-start; padding: .6rem 0; border-bottom: 1px solid var(--line); }
.check:last-child { border-bottom: none; }
.check input[type="checkbox"] { width: 1.15rem; height: 1.15rem; accent-color: var(--accent); margin-top: .2rem; flex: none; cursor: pointer; }
.check label { cursor: pointer; font-size: .95rem; }
.check label strong { display: block; }
.check label .hint { color: var(--ink-soft); font-size: .87rem; }
.check.done label { opacity: .55; text-decoration: line-through; }
.progress { font-size: .85rem; color: var(--ink-soft); margin: .3rem 0 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
/* feedback widget */
.fb-card h3 { margin-top: 0; }
.fb-hint { color: var(--ink-soft); font-size: .88rem; margin: .2rem 0 .6rem; }
.fb-text { width: 100%; border: 1px solid var(--line); border-radius: 8px; background: var(--bg);
  color: var(--ink); font: inherit; padding: .6rem .7rem; resize: vertical; }
.fb-row { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; margin-top: .6rem; }
.fb-mic, .fb-send { font: inherit; font-size: .92rem; border-radius: 8px; padding: .45rem .9rem; cursor: pointer; }
.fb-mic { background: var(--surface); color: var(--ink); border: 1px solid var(--line); }
.fb-mic.rec { background: var(--warn-soft); color: var(--warn); border-color: var(--warn); font-variant-numeric: tabular-nums; }
.fb-send { background: var(--accent); color: #fff; border: 1px solid var(--accent); margin-left: auto; }
.fb-send:disabled { opacity: .6; cursor: default; }
.fb-chip { font-size: .85rem; background: var(--accent-soft); color: var(--accent); padding: .25rem .6rem; border-radius: 99px; cursor: pointer; }
.fb-status { font-size: .85rem; color: var(--ink-soft); min-height: 1.2em; margin: .5rem 0 0; }
.fb-status.ok { color: var(--accent); }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }