:root {
  --green: #1f7a4d;
  --green-dark: #145c38;
  --green-light: #e8f4ec;
  --yellow: #d7f23c;
  --yellow-deep: #c4e01f;
  --ink: #1b2a22;
  --muted: #4f6158;
  --white: #ffffff;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(20, 60, 40, .12);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--white); line-height: 1.6; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: var(--green); }
h1, h2, h3 { line-height: 1.15; margin: 0 0 .5em; }
.wrap { width: min(1100px, 100% - 2.5rem); margin-inline: auto; }
.narrow { max-width: 720px; }
.center { text-align: center; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.94); backdrop-filter: blur(6px); border-bottom: 1px solid #e3ece6; }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .75rem 0; }
.brand { display: flex; align-items: center; gap: .5rem; font-weight: 800; color: var(--green-dark); text-decoration: none; letter-spacing: -.01em; }
.nav { display: flex; gap: 1.1rem; align-items: center; }
.nav a { color: var(--ink); text-decoration: none; font-weight: 600; font-size: .95rem; }
.nav a:hover { color: var(--green); }
.nav-cta { background: var(--yellow); padding: .4rem .9rem; border-radius: 999px; }
@media (max-width: 560px) { .nav a:not(.nav-cta) { display: none; } }

/* Hero */
.hero { background:
    linear-gradient(90deg, transparent calc(50% - 2px), rgba(255,255,255,.12) calc(50% - 2px), rgba(255,255,255,.12) calc(50% + 2px), transparent calc(50% + 2px)),
    radial-gradient(circle at 85% 20%, rgba(215,242,60,.25), transparent 40%),
    linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
  color: var(--white); padding: 4.5rem 0 4rem; }
.hero-inner { display: grid; grid-template-columns: 1.1fr 1fr; gap: 3rem; align-items: center; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .8rem; font-weight: 700; color: var(--yellow); margin: 0 0 .75rem; }
.hero h1 { font-size: clamp(2.4rem, 6vw, 4rem); letter-spacing: -.02em; }
.tagline { font-size: 1.2rem; max-width: 34ch; opacity: .95; margin: 0; }
@media (max-width: 820px) { .hero-inner { grid-template-columns: 1fr; gap: 2rem; } .hero { padding: 3rem 0; } }

/* Signup */
.signup-card { background: var(--white); color: var(--ink); border-radius: var(--radius); padding: 1.75rem; box-shadow: var(--shadow); border-top: 6px solid var(--yellow); }
.signup-card h2 { font-size: 1.6rem; color: var(--green-dark); }
.signup-card p { color: var(--muted); margin: 0 0 1rem; }
.field-row { display: flex; gap: .5rem; flex-wrap: wrap; }
.field-row input[type="email"] { flex: 1 1 200px; min-width: 0; font: inherit; padding: .85rem 1rem; border: 2px solid #cfe0d5; border-radius: 10px; }
.field-row input[type="email"]:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(31,122,77,.2); }
button, .button { font: inherit; font-weight: 800; cursor: pointer; border: 0; border-radius: 10px; padding: .85rem 1.3rem; background: var(--yellow); color: var(--ink); text-decoration: none; display: inline-block; transition: background .15s, transform .15s; }
button:hover, .button:hover { background: var(--yellow-deep); transform: translateY(-1px); }
button:disabled { opacity: .6; cursor: wait; transform: none; }
.form-status { min-height: 1.5em; margin: .75rem 0 0 !important; font-weight: 600; }
.form-status.success { color: var(--green); }
.form-status.error { color: #b42318; }

/* Sections */
.section { padding: 4rem 0; }
.section.alt { background: var(--green-light); }
.section h2 { font-size: clamp(1.7rem, 3.5vw, 2.3rem); color: var(--green-dark); }
.section p { color: var(--muted); font-size: 1.08rem; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.25rem; margin: 1.5rem 0 2rem; }
.card { background: var(--white); border-radius: var(--radius); padding: 1.5rem; box-shadow: 0 4px 14px rgba(20,60,40,.07); }
.card h3 { color: var(--ink); font-size: 1.2rem; }
.card p { font-size: 1rem; margin: 0; }
.icon { font-size: 1.8rem; width: 3rem; height: 3rem; display: grid; place-items: center; background: var(--yellow); border-radius: 50%; margin-bottom: .9rem; }

/* Footer */
.site-footer { background: var(--green-dark); color: rgba(255,255,255,.9); padding: 2rem 0; }
.site-footer a { color: var(--yellow); }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: .5rem 2rem; }
.footer-inner p { margin: 0; }

/* Simple pages */
.simple { min-height: 100vh; display: grid; place-items: center; text-align: center; padding: 2rem; background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%); color: var(--white); }
.simple .box { background: var(--white); color: var(--ink); border-radius: var(--radius); padding: 2.5rem 2rem; max-width: 460px; box-shadow: var(--shadow); border-top: 6px solid var(--yellow); }
.simple .box img { margin: 0 auto 1rem; }
.simple h1 { color: var(--green-dark); }
.simple p { color: var(--muted); }