/* ============ becos — grounded answers for coding agents. Committed light theme. ============ */
:root{
  color-scheme: light;
  --bg:          #FBFBFC;   /* cool near-white ground */
  --raised:      #F5F6F8;   /* recessed panels, code cards */
  --surface:     #FFFFFF;
  --border:      #ECECF1;   /* hairline */
  --border-2:    #DEDEE6;
  --ink:         #16161A;
  --ink-2:       #3E3E46;
  --muted:       #71717A;
  --accent:      #4F46E5;   /* indigo */
  --accent-deep: #3730A3;
  --accent-tint: #EEF0FF;
  --accent-line: #D5D9FB;
  --verify:      #0B7A57;   /* grounded / resolved-source green */
  --verify-tint: #E4F3EE;
  --verify-line: #B7E0D1;
  --bad:         #B42318;   /* "agent alone" — semantic, comparison only */
  --bad-tint:    #FBECEA;
  --bad-line:    #F0C7C1;
  --warn:        #92500A;
  --warn-tint:   #F6ECDC;
  --radius:      12px;
  --radius-lg:   18px;
  --maxw:        1140px;
  --ff-sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --ff-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --shadow-card: 0 1px 2px rgba(20,20,30,.04);
  --shadow-lift: 0 1px 2px rgba(20,20,30,.05), 0 18px 40px -22px rgba(20,20,30,.22);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } }
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--ff-sans);
  font-size:16px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{ max-width:100%; display:block; }
h1,h2,h3,h4{ font-weight:600; line-height:1.12; letter-spacing:-0.025em; text-wrap:balance; margin:0; }
h1{ font-size:clamp(2.4rem, 1.5rem + 3.4vw, 3.7rem); letter-spacing:-0.032em; }
h2{ font-size:clamp(1.65rem, 1.2rem + 1.9vw, 2.35rem); }
h3{ font-size:1.12rem; letter-spacing:-0.015em; }
p{ margin:0; }
a{ color:var(--accent); text-decoration:none; }
a:hover{ color:var(--accent-deep); }
:focus-visible{ outline:2px solid var(--accent); outline-offset:3px; border-radius:4px; }
code{ font-family:var(--ff-mono); font-size:.88em; background:var(--raised); border:1px solid var(--border); padding:.06em .34em; border-radius:5px; }
.term code, .term-bar code, pre code{ background:none; border:0; padding:0; }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 26px; }
.eyebrow{
  font-family:var(--ff-mono); font-size:.7rem; font-weight:500;
  letter-spacing:.2em; text-transform:uppercase; color:var(--muted);
}
.lede{ font-size:1.14rem; line-height:1.6; color:var(--ink-2); max-width:62ch; }
.measure{ max-width:64ch; }

/* ---------- header ---------- */
header.site{
  position:sticky; top:0; z-index:50;
  background:color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--border);
}
.nav{ display:flex; align-items:center; gap:28px; height:60px; }
.brand{ display:flex; align-items:center; gap:9px; font-weight:600; letter-spacing:-.03em; font-size:1.1rem; color:var(--ink); }
.brand:hover{ color:var(--ink); }
.brand .mark{
  width:20px; height:20px; border-radius:6px; flex:none;
  background:linear-gradient(150deg, var(--accent), var(--accent-deep));
  position:relative;
}
.brand .mark::after{
  content:""; position:absolute; inset:5px 5px auto 5px; height:2px; border-radius:2px;
  background:rgba(255,255,255,.92);
  box-shadow:0 4px 0 rgba(255,255,255,.5), 0 8px 0 rgba(255,255,255,.26);
}
.nav-links{ display:flex; gap:2px; margin-left:6px; }
.nav-links a{
  color:var(--muted); font-size:.92rem; font-weight:450;
  padding:7px 11px; border-radius:8px; white-space:nowrap; transition:color .15s ease, background .15s ease;
}
.nav-links a:hover{ background:var(--raised); color:var(--ink); }
.nav-links a[aria-current="page"]{ color:var(--accent-deep); font-weight:500; }
.nav-right{ margin-left:auto; display:flex; align-items:center; gap:10px; }
.btn{
  display:inline-flex; align-items:center; gap:8px; justify-content:center;
  font-family:var(--ff-sans); font-size:.93rem; font-weight:500; line-height:1;
  padding:11px 18px; border-radius:10px; cursor:pointer; border:1px solid transparent;
  transition:transform .12s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.btn:active{ transform:translateY(1px); }
.btn-primary{ background:var(--accent); color:#fff; box-shadow:0 1px 2px rgba(79,70,229,.35); }
.btn-primary:hover{ background:var(--accent-deep); color:#fff; box-shadow:0 6px 20px -8px rgba(79,70,229,.6); }
.btn-ghost{ background:var(--surface); color:var(--ink); border-color:var(--border-2); }
.btn-ghost:hover{ border-color:var(--muted); color:var(--ink); }
.btn-sm{ padding:8px 13px; font-size:.88rem; }
.menu-toggle{ display:none; background:var(--surface); border:1px solid var(--border-2); border-radius:9px; padding:8px 10px; cursor:pointer; color:var(--ink); font-family:var(--ff-mono); font-size:.78rem; }

@media (max-width: 880px){
  .nav-links{
    position:absolute; left:0; right:0; top:60px;
    flex-direction:column; gap:2px; background:var(--bg);
    border-bottom:1px solid var(--border); padding:10px 26px 16px; margin:0;
  }
  .nav-links[hidden]{ display:none; }
  .nav-links a{ padding:10px 12px; }
  .nav-right .btn-ghost{ display:none; }
  .menu-toggle{ display:inline-block; }
}

section{ padding:84px 0; }
section.tight{ padding:56px 0; }
.section-head{ max-width:60ch; margin-bottom:46px; display:flex; flex-direction:column; gap:13px; }

/* ---------- hero ---------- */
.hero{
  padding:78px 0 66px;
  background:
    radial-gradient(46rem 26rem at 88% -18%, var(--accent-tint), transparent 68%);
  border-bottom:1px solid var(--border);
}
.hero-grid{ display:grid; grid-template-columns:1.02fr .98fr; gap:56px; align-items:center; }
@media (max-width: 980px){ .hero-grid{ grid-template-columns:1fr; gap:40px; } }
.badge{
  display:inline-flex; align-items:center; gap:8px; align-self:flex-start;
  font-family:var(--ff-mono); font-size:.74rem; letter-spacing:.01em;
  background:var(--surface); border:1px solid var(--border-2);
  padding:6px 12px; border-radius:999px; color:var(--ink-2);
}
.badge .dot{ width:6px; height:6px; border-radius:50%; background:var(--verify); flex:none; }
.hero h1{ margin:22px 0 20px; }
.hero .accent-word{ color:var(--accent-deep); }
.hero-cta{ display:flex; gap:12px; flex-wrap:wrap; margin-top:30px; }

/* ---------- example: agent alone vs agent + becos ---------- */
.ex{ margin:0; border-radius:var(--radius-lg); box-shadow:var(--shadow-lift); }
.ex + .ex{ margin-top:22px; }
.qbar{
  display:flex; gap:10px; align-items:baseline;
  background:var(--surface); border:1px solid var(--border); border-bottom:0;
  border-radius:var(--radius-lg) var(--radius-lg) 0 0;
  padding:14px 20px; font-size:.98rem; color:var(--ink);
}
.qbar .qk{ font-family:var(--ff-mono); font-size:.72rem; letter-spacing:.12em; text-transform:uppercase; color:var(--muted); flex:none; }
.compare{
  display:grid; grid-template-columns:1fr 1fr;
  background:var(--surface); border:1px solid var(--border);
  border-radius:0 0 var(--radius-lg) var(--radius-lg); overflow:hidden;
}
@media (max-width: 720px){ .compare{ grid-template-columns:1fr; } }
.compare .col{ padding:20px 22px; display:flex; flex-direction:column; gap:12px; }
.compare .col.bad{ border-right:1px solid var(--border); background:linear-gradient(180deg, var(--bad-tint), transparent 60%); }
@media (max-width: 720px){ .compare .col.bad{ border-right:0; border-bottom:1px solid var(--border); } }
.compare .col.good{ background:linear-gradient(180deg, var(--verify-tint), transparent 60%); }
.tag{
  display:inline-flex; align-items:center; gap:8px; align-self:flex-start;
  font-family:var(--ff-mono); font-size:.72rem; font-weight:500;
  letter-spacing:.06em; text-transform:uppercase;
}
.tag .dot{ width:7px; height:7px; border-radius:50%; flex:none; }
.col.bad .tag{ color:var(--bad); } .col.bad .tag .dot{ background:var(--bad); }
.col.good .tag{ color:var(--verify); } .col.good .tag .dot{ background:var(--verify); }
.ans{ font-size:.96rem; line-height:1.58; color:var(--ink); }
.flag{ font-family:var(--ff-mono); font-size:.74rem; color:var(--bad); margin-top:auto; }
.cites{ display:flex; flex-wrap:wrap; gap:7px; margin-top:auto; align-items:center; }
.cite{
  font-family:var(--ff-mono); font-size:.73rem; color:var(--accent-deep);
  background:var(--accent-tint); border:1px solid var(--accent-line);
  padding:3px 8px; border-radius:6px; line-height:1.4;
}
button.cite{ cursor:pointer; }
button.cite:hover{ background:#fff; }

/* verify / resolved source */
.verify-btn{
  font-family:var(--ff-mono); font-size:.74rem; font-weight:500;
  display:inline-flex; align-items:center; gap:7px;
  background:var(--ink); color:#fff; border:0; border-radius:7px;
  padding:6px 11px; cursor:pointer; transition:background .15s ease;
}
.verify-btn:hover{ background:#000; }
.verify-btn .chev{ transition:transform .18s ease; }
.verify-btn[aria-expanded="true"] .chev{ transform:rotate(90deg); }
.source{ margin-top:4px; border:1px solid var(--verify-line); border-radius:9px; overflow:hidden; background:var(--surface); width:100%; }
.source[hidden]{ display:none; }
.source-head{
  display:flex; align-items:center; gap:8px; padding:8px 12px;
  font-family:var(--ff-mono); font-size:.72rem; color:var(--verify); font-weight:500;
  background:var(--verify-tint); border-bottom:1px solid var(--verify-line);
}
.source pre{
  margin:0; padding:12px; font-family:var(--ff-mono); font-size:.76rem; line-height:1.6;
  color:var(--ink-2); overflow-x:auto; white-space:pre;
}

/* ---------- code / terminal card (light) ---------- */
.term{
  background:var(--raised); border:1px solid var(--border-2); border-radius:var(--radius);
  font-family:var(--ff-mono); font-size:.8rem; line-height:1.75; overflow:hidden;
}
.term-bar{
  display:flex; align-items:center; gap:6px; padding:9px 13px; border-bottom:1px solid var(--border);
  color:var(--muted); font-size:.72rem;
}
.term-bar i{ width:8px; height:8px; border-radius:50%; background:var(--border-2); display:inline-block; }
.term pre{ margin:0; padding:15px 16px; overflow-x:auto; white-space:pre; color:var(--ink-2); }
.term .p{ color:var(--accent-deep); }
.term .ok{ color:var(--verify); }
.term .cm{ color:var(--muted); }
.term .hi{ color:var(--ink); font-weight:500; }

/* ---------- grids / cards ---------- */
.grid{ display:grid; gap:16px; }
.g3{ grid-template-columns:repeat(3,1fr); }
.g2{ grid-template-columns:repeat(2,1fr); }
.g4{ grid-template-columns:repeat(4,1fr); }
@media (max-width: 920px){ .g3,.g4{ grid-template-columns:repeat(2,1fr); } }
@media (max-width: 620px){ .g2,.g3,.g4{ grid-template-columns:1fr; } }

.card{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
  padding:22px; display:flex; flex-direction:column; gap:8px; box-shadow:var(--shadow-card);
  transition:border-color .15s ease, transform .15s ease;
}
.card:hover{ border-color:var(--border-2); }
.card h3{ margin-bottom:2px; }
.card p{ font-size:.92rem; color:var(--muted); line-height:1.55; }
.card .ic{
  width:32px; height:32px; border-radius:8px; display:grid; place-items:center;
  background:var(--accent-tint); color:var(--accent-deep);
  font-family:var(--ff-mono); font-size:.85rem; font-weight:600; margin-bottom:8px;
}
.card.rmap .ic{ background:var(--warn-tint); color:var(--warn); }
.tag-roadmap{
  align-self:flex-start; font-family:var(--ff-mono); font-size:.66rem; letter-spacing:.12em;
  text-transform:uppercase; color:var(--warn); background:var(--warn-tint);
  border:1px solid color-mix(in srgb, var(--warn) 22%, transparent);
  padding:3px 8px; border-radius:6px; margin-bottom:4px;
}

/* ---------- stat band ---------- */
.band{ background:var(--ink); color:#EDEDF0; border-radius:var(--radius-lg); padding:36px 32px; }
.band .grid{ gap:26px; }
.stat .num{ font-size:2rem; font-weight:600; letter-spacing:-.03em; font-variant-numeric:tabular-nums; color:#fff; }
.stat .lbl{ font-size:.86rem; color:#B9B9C2; line-height:1.45; margin-top:4px; }
.band .src{ margin-top:22px; font-family:var(--ff-mono); font-size:.7rem; color:#83838F; }

/* ---------- comparison table ---------- */
.cmp{ width:100%; border-collapse:collapse; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg); overflow:hidden; }
.cmp th,.cmp td{ text-align:left; padding:15px 18px; border-bottom:1px solid var(--border); font-size:.92rem; vertical-align:top; }
.cmp thead th{ font-family:var(--ff-mono); font-size:.72rem; letter-spacing:.08em; text-transform:uppercase; color:var(--muted); background:var(--raised); }
.cmp tbody tr:last-child td{ border-bottom:0; }
.cmp td:first-child{ color:var(--ink); font-weight:500; width:26%; }
.cmp .alone{ color:var(--muted); }
.cmp .with{ color:var(--ink-2); }
.cmp col.c-us{ background:color-mix(in srgb, var(--verify-tint) 55%, transparent); }
.cmp-scroll{ overflow-x:auto; }

/* ---------- entity graph ---------- */
.graph{ display:grid; grid-template-columns:repeat(4,1fr); gap:12px; align-items:center; }
@media (max-width: 720px){ .graph{ grid-template-columns:1fr 1fr; } }
.node{ background:var(--surface); border:1px solid var(--border-2); border-radius:12px; padding:16px; text-align:center; box-shadow:var(--shadow-card); }
.node .k{ font-family:var(--ff-mono); font-size:.7rem; color:var(--accent-deep); letter-spacing:.08em; text-transform:uppercase; }
.node .v{ font-weight:600; margin-top:4px; font-size:.98rem; }
.node .lk{ display:block; margin-top:8px; font-family:var(--ff-mono); font-size:.68rem; color:var(--muted); }

/* ---------- pricing ---------- */
.price{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
@media (max-width: 920px){ .price{ grid-template-columns:1fr; max-width:460px; margin:0 auto; } }
.tier{ background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg); padding:26px; display:flex; flex-direction:column; gap:15px; box-shadow:var(--shadow-card); }
.tier.feat{ border-color:var(--accent-line); box-shadow:var(--shadow-lift); }
.tier .pname{ font-family:var(--ff-mono); font-size:.76rem; letter-spacing:.1em; text-transform:uppercase; color:var(--muted); }
.tier.feat .pname{ color:var(--accent-deep); }
.tier .amt{ font-size:1.9rem; font-weight:600; letter-spacing:-.03em; }
.tier .amt small{ font-size:.88rem; font-weight:400; color:var(--muted); letter-spacing:0; }
.tier .blurb{ font-size:.9rem; color:var(--muted); margin:0; }
.tier ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:9px; font-size:.9rem; color:var(--ink-2); }
.tier li{ padding-left:22px; position:relative; line-height:1.45; }
.tier li::before{ content:"\2713"; position:absolute; left:0; color:var(--verify); font-family:var(--ff-mono); font-size:.82rem; }
.tier li.muted{ color:var(--muted); }
.tier li.muted::before{ content:"\2013"; color:var(--muted); }
.tier .btn{ margin-top:auto; width:100%; }
.note{ margin-top:22px; font-family:var(--ff-mono); font-size:.74rem; color:var(--muted); }

/* ---------- rows / split ---------- */
.rows{ display:flex; flex-direction:column; gap:10px; }
.row-item{ display:grid; grid-template-columns:190px 1fr; gap:20px; padding:18px; background:var(--surface); border:1px solid var(--border); border-radius:12px; box-shadow:var(--shadow-card); }
@media (max-width: 620px){ .row-item{ grid-template-columns:1fr; gap:6px; } }
.row-item .k{ font-family:var(--ff-mono); font-size:.8rem; color:var(--accent-deep); }
.row-item .d{ font-size:.92rem; color:var(--ink-2); line-height:1.5; }

.split{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
@media (max-width: 720px){ .split{ grid-template-columns:1fr; } }
.kbox{ background:var(--surface); border:1px solid var(--border); border-radius:12px; padding:20px; box-shadow:var(--shadow-card); }
.kbox h4{ font-size:.8rem; font-family:var(--ff-mono); letter-spacing:.08em; text-transform:uppercase; color:var(--muted); margin-bottom:11px; }
.kbox ul{ margin:0; padding-left:18px; font-size:.9rem; color:var(--ink-2); line-height:1.62; }
.kbox.pos{ border-color:var(--accent-line); background:linear-gradient(180deg, var(--accent-tint), transparent 70%); }
.kbox.pos h4{ color:var(--accent-deep); }

.split-mid{ display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center; }
@media (max-width: 860px){ .split-mid{ grid-template-columns:1fr; gap:30px; } }

/* ---------- team collation ---------- */
.collate{ display:flex; gap:16px; align-items:center; }
.collate .feeders{ flex:1; display:flex; flex-direction:column; gap:10px; min-width:0; }
.collate .conn{ flex:none; color:var(--accent); font-size:1.5rem; line-height:1; }
@media (max-width: 900px){ .collate{ flex-direction:column; align-items:stretch; } .collate .conn{ transform:rotate(90deg); align-self:center; } }
.feeder{ background:var(--surface); border:1px solid var(--border); border-radius:11px; padding:12px 14px; box-shadow:var(--shadow-card); }
.feeder .who{ font-family:var(--ff-mono); font-size:.76rem; color:var(--ink); }
.feeder .who b{ color:var(--accent-deep); font-weight:600; }
.feeder .got{ font-size:.84rem; color:var(--muted); margin-top:3px; line-height:1.45; }
.feeder.consume{ border-color:var(--accent-line); background:linear-gradient(180deg, var(--accent-tint), transparent 75%); }
.collate .hub{ flex:none; width:200px; background:var(--ink); color:#fff; border-radius:14px; padding:18px; text-align:center; box-shadow:var(--shadow-lift); }
@media (max-width: 900px){ .collate .hub{ width:auto; } }
.collate .hub .h-t{ font-family:var(--ff-mono); font-size:.68rem; letter-spacing:.14em; text-transform:uppercase; color:#9E9EA8; }
.collate .hub .h-n{ font-weight:600; font-size:1.05rem; margin-top:5px; }
.collate .hub .h-s{ font-size:.76rem; color:#B9B9C2; margin-top:7px; line-height:1.45; }
.collate-cap{ margin-top:16px; font-family:var(--ff-mono); font-size:.78rem; color:var(--muted); text-align:center; }

/* ---------- CTA ---------- */
.cta-final{
  background:linear-gradient(135deg, var(--accent), var(--accent-deep));
  color:#fff; border-radius:var(--radius-lg); padding:56px 40px; text-align:center;
}
.cta-final h2{ color:#fff; }
.cta-final p{ color:#DEDCFB; max-width:52ch; margin:14px auto 0; }
.cta-final .btn{ margin-top:28px; }
.cta-final .btn-primary{ background:#fff; color:var(--accent-deep); box-shadow:none; }
.cta-final .btn-primary:hover{ background:#EEF0FF; color:var(--accent-deep); box-shadow:none; }

/* ---------- footer ---------- */
footer.site{ border-top:1px solid var(--border); background:var(--raised); padding:52px 0 34px; margin-top:24px; }
.foot-grid{ display:grid; grid-template-columns:1.5fr repeat(4,1fr); gap:30px; }
@media (max-width: 820px){ .foot-grid{ grid-template-columns:1fr 1fr; } }
.foot-col h5{ font-family:var(--ff-mono); font-size:.7rem; letter-spacing:.14em; text-transform:uppercase; color:var(--muted); margin:0 0 12px; }
.foot-col a{ display:block; color:var(--ink-2); font-size:.88rem; padding:4px 0; }
.foot-col a:hover{ color:var(--accent-deep); }
.foot-brand p{ font-size:.86rem; color:var(--muted); margin-top:10px; max-width:34ch; }
.foot-legal{ display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; margin-top:40px; padding-top:20px; border-top:1px solid var(--border); font-family:var(--ff-mono); font-size:.72rem; color:var(--muted); }

.reveal{ opacity:0; transform:translateY(12px); transition:opacity .55s cubic-bezier(.2,.6,.2,1), transform .55s cubic-bezier(.2,.6,.2,1); }
.reveal.in{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){ .reveal{ opacity:1; transform:none; transition:none; } }

.inline-list{ display:flex; flex-wrap:wrap; gap:8px; margin-top:6px; }
.pill{ font-family:var(--ff-mono); font-size:.74rem; color:var(--ink-2); background:var(--raised); border:1px solid var(--border-2); padding:4px 10px; border-radius:999px; }