/* ReleaseGreen marketing site. Hand-written, no build step, no external requests. */

:root {
  --paper: #f3efe6;
  --paper-2: #ebe6d9;
  --ink: #1b1a17;
  --muted: #625e53;
  --rule: #d6cfbd;
  --green: #1d6b3f;
  --amber: #a9690f;
  --red: #b3261e;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #161511;
    --paper-2: #1e1c17;
    --ink: #ece7da;
    --muted: #a09a8a;
    --rule: #34312a;
    --green: #4fb27a;
    --amber: #d9a043;
    --red: #e0675f;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.6 var(--sans);
}

a { color: var(--green); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 680px; }

/* header */
.top { border-bottom: 1px solid var(--rule); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 650; letter-spacing: -0.01em; }
.brand svg { display: block; }
.top nav { display: flex; align-items: center; gap: 24px; font-size: 15px; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--ink); }
.top nav a.signin { color: var(--ink); border: 1px solid var(--ink); padding: 6px 14px; border-radius: 3px; }
.top nav a.signin:hover { background: var(--ink); color: var(--paper); }

/* type */
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -0.015em; line-height: 1.12; margin: 0; }
h1 { font-size: clamp(38px, 6.2vw, 64px); max-width: 15ch; }
h2 { font-size: clamp(27px, 3.6vw, 36px); margin-bottom: 20px; }
h3 { font-size: 20px; letter-spacing: -0.005em; margin-bottom: 6px; }
p { margin: 0 0 1em; }
.lede { font-size: 20px; line-height: 1.5; color: var(--muted); max-width: 34em; margin-top: 24px; }
.kicker { font: 600 12px/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }

/* hero */
.hero { padding: 72px 0 56px; }
.hero-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: start; }
.cta { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; margin-top: 32px; }
.btn { display: inline-block; background: var(--green); color: #fff; text-decoration: none; padding: 12px 22px; border-radius: 3px; font-weight: 600; }
@media (prefers-color-scheme: dark) { .btn { color: #0e1a13; } }
.btn:hover { filter: brightness(1.08); }
.fine { font-size: 14px; color: var(--muted); }

/* the ledger: a sample of what the product shows */
.ledger { background: var(--paper-2); border: 1px solid var(--rule); border-radius: 4px; font-family: var(--mono); font-size: 13px; }
.ledger-head { display: flex; justify-content: space-between; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--rule); color: var(--muted); }
.ledger-head b { color: var(--ink); font-weight: 600; }
.ledger ul { list-style: none; margin: 0; padding: 0; }
.ledger li { display: grid; grid-template-columns: 18px 1fr; gap: 12px; padding: 11px 16px; border-bottom: 1px solid var(--rule); line-height: 1.45; }
.ledger li:last-child { border-bottom: 0; }
.ledger li span.why { display: block; color: var(--muted); font-size: 12px; margin-top: 2px; }
.dot { width: 12px; height: 12px; border-radius: 50%; margin-top: 4px; border: 2px solid var(--muted); background: transparent; }
.dot.g { background: var(--green); border-color: var(--green); }
.dot.a { background: var(--amber); border-color: var(--amber); }
.dot.r { background: var(--red); border-color: var(--red); }
.ledger-foot { padding: 10px 16px; border-top: 1px solid var(--rule); color: var(--muted); font-size: 12px; }

/* sections */
section { padding: 56px 0; border-top: 1px solid var(--rule); }
.cols { display: grid; grid-template-columns: 220px 1fr; gap: 40px; }
.cols > .kicker { margin-top: 8px; }

.steps { list-style: none; counter-reset: s; padding: 0; margin: 0; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 44px 1fr; padding: 18px 0; border-bottom: 1px solid var(--rule); }
.steps li:first-child { padding-top: 0; }
.steps li::before { content: counter(s, decimal-leading-zero); font: 600 14px/1.9 var(--mono); color: var(--green); }
.steps p { color: var(--muted); margin: 0; }

.targets { columns: 2; column-gap: 40px; list-style: none; padding: 0; margin: 20px 0 0; font-size: 15px; }
.targets li { padding: 5px 0; border-bottom: 1px dotted var(--rule); break-inside: avoid; }
.targets small { color: var(--muted); }

.price { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.price .n { font: 600 clamp(56px, 9vw, 88px)/1 var(--serif); letter-spacing: -0.03em; }
.price .u { font-size: 18px; color: var(--muted); }
.plain { padding-left: 1.1em; }
.plain li { margin: 6px 0; }

details { border-bottom: 1px solid var(--rule); padding: 14px 0; }
details:first-of-type { border-top: 1px solid var(--rule); }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 10px 0 0; color: var(--muted); }

.sec-list { list-style: none; padding: 0; margin: 0; }
.sec-list li { padding: 16px 0; border-bottom: 1px solid var(--rule); }
.sec-list li:first-child { padding-top: 0; }
.sec-list b { display: block; font-family: var(--serif); font-size: 19px; font-weight: 600; margin-bottom: 2px; }
.sec-list span { color: var(--muted); }

code { font: 0.9em var(--mono); background: var(--paper-2); padding: 1px 5px; border-radius: 3px; }

.page { padding: 64px 0 24px; }
.page h1 { font-size: clamp(34px, 5vw, 50px); max-width: none; margin-bottom: 20px; }

footer { border-top: 1px solid var(--rule); padding: 32px 0 48px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 32px; }
footer a { color: var(--muted); }

@media (max-width: 820px) {
  .hero { padding-top: 44px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .cols { grid-template-columns: 1fr; gap: 8px; }
  .targets { columns: 1; }
  .top nav a:not(.signin) { display: none; }
}

/* imagery */
.route { margin: 28px 0 28px; }
.route img { display: block; width: 100%; height: auto; }
.route figcaption { font: 12px var(--mono); color: var(--muted); margin-top: 8px; }
.cta-grid { display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; }
.cta-signal { height: 220px; width: auto; }
footer .sign { font-family: var(--serif); font-size: 15px; color: var(--ink); margin-right: 8px; }
@media (max-width: 820px) { .cta-grid { grid-template-columns: 1fr; } .cta-signal { display: none; } }