:root {
  --bg: #0b1220;
  --bg-soft: #0f1830;
  --card: #131f3a;
  --card-border: #223056;
  --text: #e7ecf7;
  --text-dim: #9aa8c7;
  --accent: #3ddc97;
  --accent-dim: #1f8f63;
  --danger: #ff6b6b;
  --max-w: 1080px;
  font-size: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------------------------------------------------------------- header */

header.site {
  border-bottom: 1px solid var(--card-border);
  background: linear-gradient(180deg, var(--bg-soft), var(--bg));
  position: sticky;
  top: 0;
  z-index: 10;
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 18px;
}

.brand {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: var(--text);
}

.brand span { color: var(--accent); }

nav.main a {
  color: var(--text-dim);
  margin-left: 28px;
  font-weight: 500;
  font-size: 0.95rem;
}

nav.main a:hover, nav.main a.active {
  color: var(--text);
  text-decoration: none;
}

/* ----------------------------------------------------------------- hero */

.hero {
  padding: 88px 0 64px;
  text-align: center;
}

.hero h1 {
  font-size: 2.6rem;
  line-height: 1.15;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
}

.hero p.lede {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto 34px;
}

.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #06110c;
}
.btn-primary:hover { background: #57e6ac; text-decoration: none; }

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--card-border);
}
.btn-secondary:hover { border-color: var(--text-dim); text-decoration: none; }

/* -------------------------------------------------------------- sections */

section.block { padding: 56px 0; border-top: 1px solid var(--card-border); }
section.block h2 {
  font-size: 1.6rem;
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}
section.block p.section-lede {
  color: var(--text-dim);
  max-width: 680px;
  margin: 0 0 36px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 760px) { .grid-3 { grid-template-columns: 1fr; } }

.grid-flex {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 24px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

.card p { color: var(--text-dim); margin: 0; font-size: 0.96rem; }

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: rgba(61, 220, 151, 0.12);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 14px;
}

/* ----------------------------------------------------------- stat blocks */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
  margin: 28px 0 8px;
}
@media (max-width: 760px) { .stat-grid { grid-template-columns: 1fr 1fr; } }

.money-example {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 24px;
  margin-top: 18px;
}
.money-example .row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.money-example label { color: var(--text-dim); font-size: 0.95rem; }
.money-example input {
  width: 110px;
  background: var(--bg-soft);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 8px 10px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.98rem;
}
.money-example input:focus { outline: none; border-color: var(--accent-dim); }
.money-example .result {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.01em;
}
.money-example .result-label {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-top: 2px;
}

.stat {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 22px;
  text-align: center;
}
.stat .num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.stat .label {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-top: 4px;
}

.cohort-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 6px;
}
.cohort-backtest { background: rgba(154, 168, 199, 0.15); color: var(--text-dim); }
.cohort-live { background: rgba(61, 220, 151, 0.15); color: var(--accent); }

.curve-wrap {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 20px;
  margin-top: 18px;
}
.curve-wrap svg { display: block; width: 100%; height: auto; }
.curve-caption { color: var(--text-dim); font-size: 0.85rem; margin-top: 10px; }

/* --------------------------------------------------------------- forms */

form.contact-form {
  max-width: 520px;
  margin: 0 auto;
}
form.contact-form label {
  display: block;
  font-size: 0.9rem;
  color: var(--text-dim);
  margin: 18px 0 6px;
}
form.contact-form input,
form.contact-form textarea {
  width: 100%;
  background: var(--bg-soft);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.98rem;
}
form.contact-form input:focus,
form.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent-dim);
}
form.contact-form textarea { min-height: 130px; resize: vertical; }
.honeypot-field { position: absolute; left: -9999px; opacity: 0; height: 0; }

#form-status {
  margin-top: 18px;
  font-size: 0.95rem;
  min-height: 1.4em;
}
#form-status.ok { color: var(--accent); }
#form-status.err { color: var(--danger); }

/* -------------------------------------------------------------- disclaimer */

.disclaimer {
  background: var(--bg-soft);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 18px 20px;
  color: var(--text-dim);
  font-size: 0.82rem;
  line-height: 1.6;
}

footer.site {
  border-top: 1px solid var(--card-border);
  padding: 40px 0 60px;
  margin-top: 20px;
}
footer.site .wrap > p:first-child { color: var(--text-dim); font-size: 0.85rem; }