/* AgentLedger — product marketing + deepdive. Dark-committed (the product is dark-native). */
:root {
  --bg: #0a0c0e;
  --surface: #0d1114;
  --surface-2: #12171b;
  --surface-3: #171c21;
  --line: #1a1f24;
  --line-2: #232a30;
  --line-strong: #2c353c;
  --ink: #e6e9ec;
  --ink-2: #c7ccd1;
  --muted: #8b949e;
  --faint: #5c656e;
  --lime: #c6f24e;
  --lime-hi: #d8ff74;
  --lime-dim: #9db83e;
  --purple: #a78bfa;
  --purple-2: #c9b8ff;
  --st-done: #5fd07a;
  --st-blocked: #ff6b6b;
  --st-next: #7ca2ff;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code", "Roboto Mono", monospace;
  --maxw: 1000px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation: none !important; transition: none !important; } }
body {
  margin: 0; color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  background:
    radial-gradient(1200px 620px at 82% -10%, rgba(167,139,250,0.07), transparent 60%),
    radial-gradient(1000px 560px at 4% 106%, rgba(198,242,78,0.055), transparent 55%),
    var(--bg);
}
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 26px; }
a { color: var(--lime-dim); text-decoration: none; }
a:hover { color: var(--lime); }
::selection { background: var(--lime); color: var(--bg); }
:focus-visible { outline: 2px solid var(--lime); outline-offset: 2px; border-radius: 5px; }
code { font-family: var(--mono); }

/* Nav */
.nav { position: sticky; top: 0; z-index: 30; backdrop-filter: blur(12px);
  background: rgba(10,12,14,0.72); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 22px; height: 58px; }
.mark { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; letter-spacing: -0.01em; }
.mark:hover { color: var(--ink); }
.logo { width: 27px; height: 27px; border-radius: 8px; flex: none; display: grid; place-items: center;
  background: linear-gradient(150deg, #c6f24e, #8fd12e); box-shadow: 0 0 0 1px rgba(198,242,78,.35), 0 5px 16px rgba(198,242,78,.16); }
.mark .sub { font-family: var(--mono); font-size: 9px; letter-spacing: .6px; text-transform: uppercase; color: var(--faint); display: block; line-height: 1; margin-top: 2px; }
.nav .spacer { flex: 1; }
.nav a.navlink { color: var(--muted); font-size: 14px; }
.nav a.navlink:hover { color: var(--ink); }
.nav .navlink.back { font-family: var(--mono); font-size: 12px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 15px; border-radius: 10px;
  padding: 11px 18px; cursor: pointer; border: 1px solid transparent; text-decoration: none; transition: transform .12s ease, background .15s ease, border-color .15s ease; }
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--lime); color: #0a0c0e; }
.btn-primary:hover { background: var(--lime-hi); transform: translateY(-1px); color: #0a0c0e; }
.btn-ghost { background: var(--surface-2); color: var(--ink); border-color: var(--line-2); }
.btn-ghost:hover { border-color: var(--line-strong); transform: translateY(-1px); color: var(--ink); }
.btn.sm { padding: 8px 13px; font-size: 13.5px; }

/* Eyebrow / headings */
.eyebrow { font-family: var(--mono); font-size: 11.5px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--lime-dim); margin: 0 0 14px; }
h1 { font-size: clamp(38px, 6.6vw, 66px); line-height: 1.02; letter-spacing: -0.03em; font-weight: 760; margin: 0 0 22px; text-wrap: balance; }
h1 em { font-style: normal; color: var(--lime); }
h2 { font-size: clamp(26px, 3.6vw, 38px); letter-spacing: -0.02em; font-weight: 700; margin: 0 0 16px; text-wrap: balance; }
h3 { font-size: 16px; font-weight: 650; margin: 0 0 6px; letter-spacing: -0.01em; }
p { margin: 0 0 16px; color: var(--ink-2); }
.section-lede { color: var(--muted); font-size: 17.5px; max-width: 62ch; }
strong { color: var(--ink); font-weight: 640; }
.inline-code { font-family: var(--mono); font-size: .86em; color: var(--purple-2); background: rgba(167,139,250,0.1); border: 1px solid rgba(167,139,250,0.16); padding: 1px 5px; border-radius: 5px; }

section { padding: 66px 0; }
.divider { border-top: 1px solid var(--line); }

/* Hero */
.hero { padding: 84px 0 30px; }
.hero .lede { font-size: clamp(17px, 2.1vw, 21px); color: var(--ink-2); max-width: 56ch; margin: 0 0 30px; }
.btnrow { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.hero-meta { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 8px; }
.pill { font-family: var(--mono); font-size: 11.5px; color: var(--muted); border: 1px solid var(--line-2); background: var(--surface-2); border-radius: 8px; padding: 5px 10px; font-variant-numeric: tabular-nums; }
.pill b { color: var(--ink); font-weight: 600; }

/* Terminal card */
.terminal { border: 1px solid var(--line-2); background: var(--surface); border-radius: 13px; overflow: hidden; box-shadow: 0 20px 50px rgba(0,0,0,.4); margin-top: 34px; }
.terminal .bar { display: flex; align-items: center; gap: 7px; padding: 11px 14px; border-bottom: 1px solid var(--line); background: var(--surface-2); }
.terminal .bar .dot { width: 10px; height: 10px; border-radius: 50%; }
.terminal .bar .t { margin-left: 8px; font-family: var(--mono); font-size: 11px; color: var(--faint); }
.terminal pre { margin: 0; padding: 18px 18px; overflow-x: auto; font-family: var(--mono); font-size: 12.5px; line-height: 1.7; color: var(--ink-2); }
.terminal .c-key { color: var(--lime); } .terminal .c-str { color: var(--purple-2); } .terminal .c-cm { color: var(--faint); } .terminal .c-fn { color: var(--st-next); }

/* The loop */
.loop { display: flex; flex-wrap: wrap; gap: 10px; align-items: stretch; margin-top: 8px; }
.loop .step { flex: 1 1 150px; min-width: 150px; border: 1px solid var(--line-2); background: var(--surface-2); border-radius: 12px; padding: 14px; position: relative; }
.loop .step .op { font-family: var(--mono); font-size: 12.5px; color: var(--lime); margin-bottom: 4px; }
.loop .step .d { font-size: 12.5px; color: var(--muted); }
.loop .arrow { align-self: center; color: var(--faint); flex: none; }
.loop .step.accent { border-color: rgba(198,242,78,.35); }
.loop .step.purple { border-color: rgba(167,139,250,.35); }
.loop .step.purple .op { color: var(--purple-2); }
.loopback { margin-top: 14px; font-family: var(--mono); font-size: 12px; color: var(--faint); display: flex; align-items: center; gap: 8px; }
.loopback svg { color: var(--lime-dim); }

/* Pillars */
.pillars { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 8px; }
.pillar { border: 1px solid var(--line-2); background: var(--surface-2); border-radius: 14px; padding: 22px; }
.pillar .k { font-family: var(--mono); font-size: 11px; color: var(--lime); border: 1px solid rgba(198,242,78,.3); border-radius: 6px; padding: 3px 8px; display: inline-block; margin-bottom: 12px; }
.pillar h3 { font-size: 17px; margin-bottom: 8px; }
.pillar p { font-size: 14px; color: var(--muted); margin: 0; }
.pillar p b { color: var(--ink-2); }

/* Feature list */
.feats { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 8px; }
.feat { border: 1px solid var(--line); background: var(--surface); border-radius: 12px; padding: 18px; }
.feat .ic { color: var(--lime-dim); margin-bottom: 10px; }
.feat h3 { font-size: 15px; }
.feat p { font-size: 13.5px; color: var(--muted); margin: 0; }

/* Signup */
.signup { border: 1px solid var(--line-2); border-radius: 18px; padding: 40px; background:
  radial-gradient(600px 300px at 100% 0%, rgba(198,242,78,0.06), transparent 60%), var(--surface); }
.signup h2 { margin-bottom: 10px; }
.signup .row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; max-width: 480px; }
.signup input { flex: 1 1 240px; height: 46px; border-radius: 11px; border: 1px solid var(--line-2); background: var(--surface-2); color: var(--ink); padding: 0 15px; font-size: 15px; font-family: var(--sans); outline: none; }
.signup input.wide { flex-basis: 100%; }
.signup input:focus { border-color: var(--line-strong); }
.signup .note { font-size: 12.5px; color: var(--faint); margin-top: 14px; }
.signup .thanks { display: none; margin-top: 18px; padding: 16px 18px; border: 1px solid rgba(198,242,78,.3); background: rgba(198,242,78,0.06); border-radius: 12px; color: var(--ink-2); }
.signup .thanks strong { color: var(--lime); }

/* Deepdive-specific */
.toc { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 4px; }
.toc a { font-family: var(--mono); font-size: 12px; color: var(--muted); border: 1px solid var(--line-2); background: var(--surface-2); border-radius: 8px; padding: 5px 10px; }
.toc a:hover { color: var(--ink); border-color: var(--line-strong); }
.callout { border-left: 2px solid var(--lime); background: rgba(198,242,78,0.05); border-radius: 0 11px 11px 0; padding: 16px 18px; margin: 20px 0; }
.callout h3 { color: var(--lime); }
.callout p { color: var(--ink-2); margin: 0; }
.tablewrap { overflow-x: auto; border: 1px solid var(--line-2); border-radius: 13px; margin: 8px 0; }
table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: 13.5px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { font-family: var(--mono); font-size: 10.5px; text-transform: uppercase; letter-spacing: .8px; color: var(--faint); background: var(--surface-2); font-weight: 500; }
tbody tr:last-child td { border-bottom: none; }
td.mono { font-family: var(--mono); font-size: 12.5px; color: var(--purple-2); white-space: nowrap; }
td.rev { font-family: var(--mono); color: var(--lime-dim); white-space: nowrap; }
.grouprow td { font-family: var(--mono); font-size: 10.5px; text-transform: uppercase; letter-spacing: 1px; color: var(--lime-dim); background: var(--surface); }
.ro, .wr { font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: .5px; }
.ro { color: var(--faint); } .wr { color: var(--lime-dim); }
ul.tight { margin: 0 0 16px; padding-left: 20px; color: var(--ink-2); }
ul.tight li { margin: 6px 0; }
ul.tight li b { color: var(--ink); }

footer { border-top: 1px solid var(--line); padding: 40px 0; margin-top: 40px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 26px; align-items: center; color: var(--muted); font-size: 14px; }
footer .spacer { flex: 1; }
footer a { color: var(--muted); } footer a:hover { color: var(--ink); }
footer .mono { font-family: var(--mono); font-size: 12px; color: var(--faint); }

@media (max-width: 720px) {
  .pillars, .feats { grid-template-columns: 1fr; }
  .loop .arrow { transform: rotate(90deg); }
  .hero { padding-top: 56px; }
  .signup { padding: 28px 22px; }
  .nav a.navlink:not(.back) { display: none; }
}