:root {
  --green: #1db954;
  --text: #18181b;
  --bg: #fafafa;
  --muted: #6b7280;
  --card: #ffffff;
  --border: rgba(24, 24, 27, 0.08);
  --shadow: 0 20px 50px -20px rgba(24, 24, 27, 0.35);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

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

/* Header */

header.site {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
}

.brand img { width: 26px; height: 26px; }

nav.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

nav.site-nav a.nav-link {
  color: var(--text);
  font-weight: 500;
  font-size: 15px;
}

nav.site-nav a.nav-link:hover { text-decoration: none; color: var(--green); }

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  white-space: nowrap;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.btn:hover { text-decoration: none; opacity: 0.92; }

.btn-primary { background: var(--green); color: #ffffff; }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-on-green { background: #ffffff; color: var(--green); }

header.site .btn { padding: 8px 16px; font-size: 14px; }

/* Hero */

.hero {
  padding: 96px 0 64px;
  text-align: center;
}

.hero h1 {
  font-size: 44px;
  line-height: 1.15;
  font-weight: 700;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
}

.hero p.subhead {
  max-width: 620px;
  margin: 0 auto 32px;
  font-size: 19px;
  color: var(--muted);
}

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

.hero .sysreq {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 48px;
}

.hero-shot {
  border-radius: 14px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  overflow: hidden;
  max-width: 980px;
  margin: 0 auto;
}

.hero-shot img {
  width: 100%;
  height: 560px;
  object-fit: cover;
  object-position: top;
}

/* Feature sections */

.features { padding: 40px 0 20px; }

.feature-row {
  display: flex;
  align-items: center;
  gap: 64px;
  padding: 64px 0;
  border-top: 1px solid var(--border);
}

.feature-row:first-child { border-top: none; }

.feature-row.reverse { flex-direction: row-reverse; }

.feature-media, .feature-copy { flex: 1 1 0; min-width: 0; }

.feature-media img {
  border-radius: 12px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  width: 100%;
  height: 300px;
  object-fit: cover;
  object-position: top;
}

.feature-copy h3 {
  font-size: 26px;
  margin: 0 0 12px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.feature-copy p {
  color: var(--muted);
  font-size: 16px;
  margin: 0;
}

/* Beta CTA band */

.beta-band {
  background: var(--green);
  color: #ffffff;
  text-align: center;
  padding: 72px 24px;
  margin-top: 40px;
}

.beta-band img { width: 44px; height: 44px; margin: 0 auto 20px; }

.beta-band h2 {
  font-size: 30px;
  margin: 0 0 12px;
  font-weight: 700;
}

.beta-band p {
  margin: 0 0 28px;
  font-size: 17px;
  color: rgba(255, 255, 255, 0.9);
}

/* Footer */

footer.site {
  padding: 40px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

footer.site a { color: var(--muted); text-decoration: underline; }
footer.site .tagline { margin-top: 6px; }

/* Responsive */

@media (max-width: 768px) {
  .hero { padding: 56px 0 40px; }
  .hero h1 { font-size: 30px; }
  .hero p.subhead { font-size: 16px; margin-bottom: 24px; }
  .hero .cta-row { gap: 10px; margin-bottom: 10px; }
  .hero .sysreq { margin-bottom: 32px; }
  .hero-shot img { height: 240px; }

  .feature-row, .feature-row.reverse {
    flex-direction: column;
    gap: 20px;
    padding: 36px 0;
  }
  .feature-media img { height: 200px; }
  .feature-copy h3 { font-size: 22px; }
  .feature-copy p { font-size: 15px; }

  .beta-band { padding: 48px 20px; }
  .beta-band h2 { font-size: 24px; }
  .beta-band p { font-size: 16px; }

  nav.site-nav { gap: 12px; }
  nav.site-nav a.nav-link { display: none; }
  header.site .btn { padding: 8px 14px; font-size: 13px; }
}

@media (max-width: 400px) {
  .brand { font-size: 16px; gap: 8px; }
  .brand img { width: 22px; height: 22px; }
  .hero h1 { font-size: 26px; }
  header.site .btn { padding: 7px 12px; font-size: 12px; }
}