/* Founder OS marketing site. Paper, ink, and the app's deep green; a ledger feel rather than a launch page. */
:root {
  --bg: #f6f4ee;
  --panel: #fffdf8;
  --ink: #1c1f1d;
  --muted: #5c625e;
  --line: #d9d5ca;
  --accent: #2f5d50;
  --accent-ink: #ffffff;
  --weak: #a3561d;
  --weak-bg: #f8e9dc;
  --ok: #2f5d50;
  --ok-bg: #e2eee9;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #171a18; --panel: #1f2321; --ink: #ecebe5; --muted: #a3a89f; --line: #363b37;
    --accent: #7fb3a3; --accent-ink: #10201b; --weak: #e0a473; --weak-bg: #33261b; --ok: #7fb3a3; --ok-bg: #1d2f29;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #171a18; --panel: #1f2321; --ink: #ecebe5; --muted: #a3a89f; --line: #363b37;
  --accent: #7fb3a3; --accent-ink: #10201b; --weak: #e0a473; --weak-bg: #33261b; --ok: #7fb3a3; --ok-bg: #1d2f29;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 17px; line-height: 1.55; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
main p a:not(.btn) { text-decoration: underline; text-underline-offset: 0.15em; }
a:focus-visible, .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.15; margin: 0 0 14px; text-wrap: balance; letter-spacing: -0.01em; }
h1 { font-size: clamp(38px, 6vw, 64px); }
h2 { font-size: clamp(26px, 3.4vw, 36px); }
h3 { font-size: 21px; }
p { margin: 0 0 14px; }
p:last-child { margin-bottom: 0; }
em { font-style: italic; color: var(--accent); }

main, .top, footer { width: 100%; max-width: 1040px; margin: 0 auto; padding-inline: 20px; }
section { padding-block: 56px; border-top: 1px solid var(--line); }
section:first-child { border-top: 0; }

.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 18px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--serif); font-weight: 600; font-size: 20px; color: var(--ink); }
.mark { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: var(--accent); color: var(--accent-ink); font-family: var(--sans); font-weight: 600; font-size: 16px; }
.top nav { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.top nav a:not(.btn) { color: var(--ink); font-size: 15px; }

.eyebrow { font-family: var(--mono); font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); margin-bottom: 18px; }
.hero { padding-block: 64px 56px; }
.hero h1 { max-width: 24ch; }
.lede { font-size: 21px; line-height: 1.5; max-width: 60ch; color: var(--ink); }
.lede.small { font-size: 18px; }
.actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 26px; }
.note { color: var(--muted); font-size: 15px; }

.btn { display: inline-flex; align-items: center; justify-content: center; background: var(--accent); color: var(--accent-ink); border-radius: 10px; padding: 12px 20px; font-weight: 600; font-size: 16px; }
.btn:hover { text-decoration: none; filter: brightness(1.05); }
.btn.small { padding: 8px 14px; font-size: 14px; }

.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.cols h2 { max-width: 22ch; }
.cols p { max-width: 58ch; }

.steps { list-style: none; counter-reset: step; margin: 24px 0 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 28px 40px; }
.steps li { counter-increment: step; padding-top: 14px; border-top: 2px solid var(--accent); }
.steps li::before { content: counter(step, decimal-leading-zero); font-family: var(--mono); font-size: 13px; color: var(--muted); display: block; margin-bottom: 8px; }
.steps p { color: var(--muted); max-width: 52ch; }
.steps h3 { margin-bottom: 8px; }

.criteria-head { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: end; margin-bottom: 26px; }
.criteria-head p { color: var(--muted); max-width: 44ch; margin: 0; }
.crit-list { list-style: none; margin: 0; padding: 0; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.crit-list li { display: grid; grid-template-columns: 52px 1fr; gap: 14px; padding: 18px 20px; border-top: 1px solid var(--line); }
.crit-list li:first-child { border-top: 0; }
.crit-list .n { font-family: var(--mono); font-size: 15px; color: var(--accent); padding-top: 2px; }
.crit-list strong { font-weight: 600; }
.crit-list .suff { display: block; color: var(--muted); font-size: 15px; margin-top: 6px; }

.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 26px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 20px; display: flex; flex-direction: column; gap: 14px; }
.crit-label { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); margin: 0; }
.attached { font-family: var(--serif); font-size: 19px; line-height: 1.4; margin: 0; }
.verdict { margin: 0; padding: 12px 14px; border-radius: 8px; font-size: 15px; line-height: 1.5; }
.card.weak .verdict { background: var(--weak-bg); color: var(--ink); }
.card.ok .verdict { background: var(--ok-bg); color: var(--ink); }
.tag { display: inline-block; font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; padding: 2px 7px; border-radius: 5px; margin-right: 8px; vertical-align: 1px; }
.card.weak .tag { background: var(--weak); color: var(--accent-ink); }
.card.ok .tag { background: var(--ok); color: var(--accent-ink); }

.areas { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 22px; }
.areas h3 { font-family: var(--mono); font-weight: 500; font-size: 14px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--accent); margin-bottom: 8px; }
.areas p { color: var(--muted); }

.privacy ul { margin: 12px 0 0; padding-left: 20px; max-width: 64ch; }
.privacy li { margin-bottom: 8px; }

.cta { text-align: left; }
.cta h2 { max-width: 20ch; }

footer { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-block: 28px 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); }

@media (max-width: 760px) {
  body { font-size: 16px; }
  section { padding-block: 40px; }
  .hero { padding-block: 40px; }
  .lede { font-size: 18px; }
  .cols, .steps, .criteria-head, .cards, .areas { grid-template-columns: 1fr; gap: 24px; }
  .crit-list li { grid-template-columns: 36px 1fr; padding: 14px 14px; }
  .top nav { width: 100%; gap: 8px 14px; }
  .top nav a:not(.btn) { padding-block: 6px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }