:root {
  --bg: #0b0f14;
  --surface: #121821;
  --surface-2: #1a222e;
  --border: #233041;
  --text: #e8edf4;
  --text-dim: #8a97a8;
  --green: #22c55e;
  --blue: #3b82f6;
}

* { box-sizing: border-box; }

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

a { color: inherit; }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 15, 20, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 16px; }
.brand .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); }
.nav-cta {
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--text);
}
.nav-cta:hover { border-color: var(--blue); }

/* Hero */
.hero { padding: 64px 20px 48px; text-align: center; }
.hero-inner { max-width: 640px; margin: 0 auto; }
.hero-icon { border-radius: 22px; margin-bottom: 24px; }
.hero h1 { font-size: 34px; line-height: 1.2; margin: 0 0 16px; letter-spacing: -0.01em; }
.hero-sub { font-size: 16px; color: var(--text-dim); line-height: 1.6; margin: 0 0 32px; }

.cta-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  line-height: 1.2;
}
.btn-primary { background: var(--blue); color: white; }
.btn-primary[aria-disabled="true"] { background: var(--surface-2); color: var(--text-dim); cursor: default; border: 1px solid var(--border); }
.btn-primary small { display: block; font-weight: 400; font-size: 10px; opacity: 0.75; text-transform: uppercase; letter-spacing: 0.04em; }
.btn-secondary { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--blue); }

.browser-link {
  display: inline-block;
  margin-top: 18px;
  font-size: 13px;
  color: var(--text-dim);
  text-decoration: none;
}
.browser-link:hover { color: var(--text); }

/* Sections */
.section { max-width: 1040px; margin: 0 auto; padding: 56px 20px; }
.section h2 { font-size: 24px; text-align: center; margin: 0 0 36px; }
.section.alt { background: var(--surface); border-radius: 24px; max-width: 1000px; }
.section.disclaimer {
  max-width: 680px;
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.7;
  padding-top: 0;
}

/* Flow */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.flow-step { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 20px; display: flex; gap: 12px; }
.flow-num {
  width: 26px; height: 26px; min-width: 26px;
  border-radius: 50%; background: var(--surface-2); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: var(--blue);
}
.flow-step b { font-size: 14px; }
.flow-step p { margin: 6px 0 0; font-size: 13px; color: var(--text-dim); line-height: 1.5; }

/* Features */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature { text-align: center; padding: 0 8px; }
.feature-icon { font-size: 30px; margin-bottom: 10px; }
.feature h3 { font-size: 15px; margin: 0 0 8px; }
.feature p { font-size: 13px; color: var(--text-dim); line-height: 1.55; margin: 0; }

/* Footer */
.footer {
  max-width: 680px;
  margin: 0 auto;
  padding: 24px 20px 56px;
  text-align: center;
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.6;
}
.footer a { color: var(--blue); text-decoration: none; }

@media (max-width: 720px) {
  .hero { padding: 48px 20px 36px; }
  .hero h1 { font-size: 26px; }
  .flow { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr 1fr; }
  .section.alt { border-radius: 0; margin: 0 -1px; }
  .nav-cta span { display: none; }
}