:root {
  --color-bg: #17191C;
  --color-bg-panel: #141619;
  --color-bg-input: #0D0F11;
  --color-accent: #0DA39E;
  --color-text-bright: #F4F5F6;
  --color-text-secondary: #E3E2DC;
  --color-text-muted: #9A9FA4;
  --color-text-dim: #6B7075;
  --color-border: #4B5054;
  --color-error: #ff8a80;
  --font-sans: 'Archivo', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Space Mono', monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text-bright);
  font-family: var(--font-sans);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 32px;
  border-bottom: 1px solid var(--color-bg-panel);
}
.nav-logo { height: 24px; }

.btn {
  display: inline-block;
  border: none;
  border-radius: 6px;
  font-family: var(--font-sans);
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
}
.btn-primary { background: var(--color-accent); color: #0D0F11; padding: 12px 20px; font-size: 14px; }
.btn-small { padding: 8px 16px; font-size: 13px; }

.hero {
  padding: 64px 32px;
  border-bottom: 1px solid var(--color-bg-panel);
  max-width: 900px;
  margin: 0 auto;
}
.hero-inner {
  display: flex;
  align-items: center;
  gap: 40px;
}
.hero-mark {
  width: 180px;
  height: auto;
  flex-shrink: 0;
}
.hero-content {
  flex: 1;
  text-align: left;
}
.hero h1 {
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1.15;
  margin: 0 0 16px;
  font-weight: 900;
}
.hero-subhead {
  color: var(--color-text-muted);
  font-size: 16px;
  line-height: 1.5;
  margin: 0 0 28px;
}
.hero-content .signup-form {
  justify-content: flex-start;
  margin: 0;
}

.signup-form {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 420px;
  margin: 0 auto;
}
.signup-form input[type="email"] {
  flex: 1;
  min-width: 200px;
  background: var(--color-bg-input);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 12px 14px;
  color: var(--color-text-bright);
  font-family: var(--font-sans);
  font-size: 14px;
}
.signup-form input::placeholder { color: var(--color-text-dim); }

.micro-copy { font-size: 12px; color: var(--color-text-dim); margin-top: 10px; }
.form-error { font-size: 13px; color: var(--color-error); margin-top: 10px; }
.thank-you { font-family: var(--font-sans); font-size: 15px; color: var(--color-accent); font-weight: 700; }

.section-label {
  font-family: var(--font-mono);
  color: var(--color-text-dim);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 28px;
}

.value-props { padding: 56px 32px; border-bottom: 1px solid var(--color-bg-panel); }
.tiles { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; max-width: 900px; margin: 0 auto; }
.tile { flex: 1; min-width: 200px; max-width: 260px; text-align: center; }
.tile-icon {
  width: 40px;
  height: 40px;
  background: rgba(13, 163, 158, 0.13);
  border: 1px solid var(--color-accent);
  border-radius: 8px;
  margin: 0 auto 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.tile h3 { font-size: 16px; margin: 0 0 8px; }
.tile p { font-size: 13px; color: var(--color-text-muted); margin: 0; line-height: 1.5; }

.how-it-works { padding: 56px 32px; border-bottom: 1px solid var(--color-bg-panel); }
.steps { display: flex; gap: 32px; justify-content: center; flex-wrap: wrap; max-width: 700px; margin: 0 auto; }
.step { text-align: center; max-width: 180px; }
.step-number { display: block; font-family: var(--font-mono); color: var(--color-accent); font-size: 22px; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--color-text-secondary); margin: 0; }

.second-cta { padding: 56px 32px; text-align: center; border-bottom: 1px solid var(--color-bg-panel); }
.second-cta h2 { font-size: 22px; margin: 0 0 20px; }

.faq { padding: 56px 32px; border-bottom: 1px solid var(--color-bg-panel); }
.faq-list { max-width: 520px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--color-bg-panel); padding: 14px 0; }
.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 14px;
  color: var(--color-text-secondary);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  color: var(--color-accent);
  font-family: var(--font-mono);
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  content: '\2212';
}
.faq-item p { font-size: 13px; color: var(--color-text-muted); margin: 10px 0 0; line-height: 1.5; }

.footer { padding: 28px 32px; text-align: center; }
.footer p { font-size: 12px; color: var(--color-text-dim); margin: 4px 0; }
.footer a { color: var(--color-text-dim); }
p.footer-fine-print { max-width: 440px; margin: 4px auto 0; color: var(--color-border); }

@media (max-width: 700px) {
  .hero-inner { flex-direction: column; text-align: center; }
  .hero-content { text-align: center; }
  .hero-mark { width: 120px; }
  .hero-content .signup-form { justify-content: center; margin: 0 auto; }
}

@media (max-width: 480px) {
  .signup-form { flex-direction: column; }
  .nav { padding: 16px 20px; }
}