:root {
  --bg: #ffffff;
  --bg-alt: #f6f7fb;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --success: #15803d;
  --error: #b91c1c;
  --radius: 12px;
  --max: 1120px;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.2; margin: 0 0 0.5em; }
h1 { font-size: clamp(2.5rem, 6vw, 4rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); letter-spacing: -0.02em; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
a { color: var(--primary); text-decoration: none; }

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--primary);
  margin-bottom: 0.75em;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.8em 1.4em;
  border: 2px solid var(--primary);
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}
.btn:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-1px); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.btn-ghost { background: transparent; color: var(--primary); }
.btn-ghost:hover { background: rgba(79, 70, 229, 0.08); border-color: var(--primary); }
.btn-small { padding: 0.5em 1.1em; font-size: 0.95rem; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 0.6em; color: var(--text); font-size: 1.2rem; }
.logo-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 700;
}
.nav-links { display: flex; align-items: center; gap: 1.75em; }
.nav-links a:not(.btn) { color: var(--muted); font-weight: 500; }
.nav-links a:not(.btn):hover { color: var(--text); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: 0;
  cursor: pointer;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; }

/* Hero */
.hero {
  padding: 120px 0 110px;
  background:
    radial-gradient(circle at 85% 20%, rgba(79, 70, 229, 0.12), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(14, 165, 233, 0.10), transparent 40%);
}
.hero-inner { max-width: 820px; }
.lead { font-size: 1.2rem; color: var(--muted); max-width: 640px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75em; margin-top: 2em; }

/* Sections */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }

.grid { display: grid; gap: 20px; margin-top: 2.5em; }
.cards { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.card {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.card:hover {
  border-color: rgba(79, 70, 229, 0.4);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  transform: translateY(-2px);
}
.card p { color: var(--muted); margin: 0; }
.card-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 1em;
  border-radius: 10px;
  background: rgba(79, 70, 229, 0.1);
  color: var(--primary);
  font-family: var(--mono);
  font-weight: 700;
}

.steps {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  list-style: none;
  padding: 0;
}
.steps li { padding-top: 1.25em; border-top: 2px solid var(--primary); }
.steps p { color: var(--muted); margin: 0; }
.step-num {
  display: block;
  margin-bottom: 0.5em;
  font-family: var(--mono);
  font-weight: 700;
  color: var(--primary);
}

.about, .contact {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 48px;
  align-items: start;
}
.about p, .contact p { color: var(--muted); font-size: 1.05rem; }

/* Form */
.form {
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; margin-bottom: 18px; }
.field label { font-weight: 600; font-size: 0.95rem; margin-bottom: 6px; }
.optional { color: var(--muted); font-weight: 400; }
.field input,
.field textarea {
  padding: 0.75em 0.9em;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  color: var(--text);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { resize: vertical; min-height: 120px; }
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}
.field.invalid input,
.field.invalid textarea { border-color: var(--error); }
.hp { position: absolute; left: -9999px; }
.form-status { margin: 1em 0 0; font-weight: 500; min-height: 1.5em; }
.form-status.success { color: var(--success); }
.form-status.error { color: var(--error); }

/* Footer */
.site-footer { padding: 28px 0; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.95rem; }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1em; }

/* Responsive */
@media (max-width: 800px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 20px 20px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.75em 0; }
  .nav-links .btn { text-align: center; margin-top: 0.5em; padding: 0.75em; }

  .hero { padding: 80px 0 70px; }
  .section { padding: 72px 0; }
  .about, .contact { grid-template-columns: 1fr; gap: 24px; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .form { padding: 22px; }
}