/* SplitGoGo landing page. Brand: deep pine + mint accent. */
:root {
  --ink: #0f3d38;
  --ink-soft: #2f5b56;
  --accent: #57c4a3;
  --accent-dark: #3da588;
  --bg: #ffffff;
  --soft: #f4f8f7;
  --border: #dde8e5;
  --muted: #5a6b69;
  --radius: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-dark); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ---- header ---- */
.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: rgba(255,255,255,0.94);
  backdrop-filter: blur(6px); z-index: 10;
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 16px; padding-bottom: 16px;
}
.site-header img { height: 34px; }

/* ---- buttons ---- */
.btn {
  display: inline-block; font-weight: 600; font-size: 15px;
  padding: 12px 22px; border-radius: var(--radius); text-decoration: none;
  border: 2px solid transparent; cursor: pointer; transition: all .15s ease;
}
.btn-primary { background: var(--accent); color: var(--ink); }
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--accent); }

/* ---- hero ---- */
.hero { padding: 88px 0 72px; }
.hero h1 {
  font-size: 46px; line-height: 1.15; letter-spacing: -0.02em;
  max-width: 720px;
}
.hero h1 .accent { color: var(--accent-dark); }
.hero p.lead {
  font-size: 20px; color: var(--muted); margin: 22px 0 32px; max-width: 620px;
}
.hero .cta-row { display: flex; gap: 14px; flex-wrap: wrap; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-dark);
  margin-bottom: 18px;
}

/* ---- sections ---- */
section { padding: 64px 0; }
.section-soft { background: var(--soft); }
h2 { font-size: 30px; letter-spacing: -0.01em; margin-bottom: 8px; }
.section-intro { color: var(--muted); font-size: 17px; margin-bottom: 36px; max-width: 640px; }

/* ---- feature grid ---- */
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px;
}
.section-soft .card { background: #fff; }
.card h3 { font-size: 18px; margin-bottom: 6px; }
.card p { color: var(--muted); font-size: 15px; }

/* ---- audience ---- */
.audience { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.audience .card { padding: 30px; }
.tag {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .05em;
  text-transform: uppercase; padding: 4px 10px; border-radius: 999px;
  background: var(--soft); color: var(--ink-soft); margin-bottom: 12px;
}

/* ---- demo form ---- */
.demo-flex { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.form-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px;
}
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.field input, .field textarea {
  width: 100%; font: inherit; font-size: 15px; padding: 11px 13px;
  border: 1px solid var(--border); border-radius: 8px; background: #fff; color: var(--ink);
}
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(87,196,163,.18);
}
.field .errors { color: #b3261e; font-size: 13px; margin-top: 5px; list-style: none; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 14px; }
.success {
  background: #e6f6f0; border: 1px solid var(--accent); color: var(--ink);
  border-radius: var(--radius); padding: 20px 22px; margin-bottom: 24px;
}
.success strong { display: block; margin-bottom: 4px; }

/* ---- footer ---- */
.site-footer { background: var(--ink); color: #cfe0dc; padding: 44px 0; }
.site-footer .wrap {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 18px;
}
.site-footer img { height: 30px; }
.site-footer small { color: #9fb7b2; font-size: 13px; }

@media (max-width: 760px) {
  .hero h1 { font-size: 34px; }
  .grid, .audience, .demo-flex { grid-template-columns: 1fr; }
  .demo-flex { gap: 28px; }
}