:root {
  --bg: #0b1120;
  --surface: #162032;
  --surface-border: rgba(16, 185, 129, 0.22);
  --primary: #10b981;
  --primary-hover: #34d399;
  --text: #f8fafc;
  --muted: #94a3b8;
  --error: #f87171;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}
.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 1.5rem;
}
.hero {
  text-align: center;
  padding: 4.5rem 1rem 3.5rem;
  background: radial-gradient(circle at top, #172a3a 0%, #0b1120 75%);
  border-bottom: 1px solid var(--surface-border);
}
.badge {
  display: inline-block;
  background: rgba(16, 185, 129, 0.14);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: var(--primary-hover);
  padding: 0.4rem 0.95rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
}
h1 { font-size: 2.8rem; margin: 1rem 0 0.75rem; font-weight: 800; letter-spacing: -0.02em; }
.subtitle { color: var(--muted); font-size: 1.15rem; max-width: 680px; margin: 0 auto 2rem; }
.hero-actions { display: flex; gap: 0.85rem; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 0.85rem 1.6rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.12s ease, opacity 0.12s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: #042f2e; }
.btn-secondary { background: rgba(255, 255, 255, 0.08); color: var(--text); border: 1px solid rgba(255, 255, 255, 0.15); }
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 2.5rem 0;
}
.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  padding: 1.6rem;
  border-radius: 14px;
}
.card-icon { font-size: 2rem; margin-bottom: 0.65rem; }
.card h3 { font-size: 1.2rem; margin-bottom: 0.55rem; color: #ffffff; }
.card p { color: var(--muted); font-size: 0.95rem; }
.signup-section {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  padding: 2.2rem;
  border-radius: 16px;
  margin: 2.5rem 0;
}
.signup-section h2 { font-size: 1.6rem; margin-bottom: 0.6rem; }
.section-lead { color: var(--muted); margin-bottom: 1.5rem; }
.form { display: flex; flex-direction: column; gap: 1.1rem; max-width: 600px; }
.field label, .fieldset legend {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}
.hint { font-size: 0.82rem; color: var(--muted); margin-top: 0.3rem; }
.form input[type="email"], .form input[type="text"], .form select, .form textarea {
  width: 100%;
  padding: 0.8rem 0.95rem;
  border-radius: 8px;
  border: 1px solid #334155;
  background: #0b1120;
  color: var(--text);
  font-size: 0.98rem;
}
.fieldset {
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 0.9rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.radio-label { display: flex; align-items: center; gap: 0.55rem; cursor: pointer; font-size: 0.95rem; }
.consent { display: flex; align-items: flex-start; gap: 0.65rem; font-size: 0.9rem; color: var(--muted); cursor: pointer; }
.consent input { margin-top: 0.25rem; }
.consent a { color: var(--primary-hover); }
.error-msg { color: var(--error); font-weight: 600; font-size: 0.92rem; }
.done-box {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--primary);
  border-radius: 12px;
  padding: 1.5rem;
  margin-top: 1rem;
}
.done-box h3 { color: var(--primary-hover); margin-bottom: 0.65rem; }
.footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.footer a { color: var(--primary-hover); text-decoration: none; }
.footer a:hover { text-decoration: underline; }
.copyright { margin-top: 0.4rem; font-size: 0.82rem; }