:root {
  --bg: #070b12;
  --bg-elev: #0e1624;
  --bg-card: #121c2e;
  --line: rgba(148, 163, 184, 0.16);
  --text: #e8eef8;
  --muted: #94a3b8;
  --green: #22c55e;
  --green-2: #16a34a;
  --cyan: #22d3ee;
  --amber: #fbbf24;
  --blue: #38bdf8;
  --violet: #a78bfa;
  --danger: #f87171;
  --radius: 18px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --max: 1120px;
  --font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(34, 197, 94, 0.18), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(56, 189, 248, 0.14), transparent 50%),
    radial-gradient(700px 400px at 50% 100%, rgba(167, 139, 250, 0.08), transparent 45%),
    var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
.container { width: min(100% - 2rem, var(--max)); margin-inline: auto; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--green); color: #04110a; padding: .6rem 1rem; z-index: 100;
}
.skip:focus { left: 1rem; top: 1rem; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(7, 11, 18, 0.78);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: .9rem 0;
}
.brand {
  display: flex; align-items: center; gap: .7rem;
  color: var(--text); font-weight: 700; letter-spacing: .02em;
  text-decoration: none;
}
.brand-mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(145deg, var(--green), var(--cyan));
  display: grid; place-items: center; color: #04110a; font-size: .95rem;
  box-shadow: 0 0 24px rgba(34, 197, 94, 0.35);
}
.nav-links {
  display: flex; flex-wrap: wrap; gap: .85rem 1.1rem; align-items: center;
  list-style: none; margin: 0; padding: 0;
}
.nav-links a { color: var(--muted); font-size: .92rem; text-decoration: none; }
.nav-links a:hover { color: var(--text); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .45rem;
  border: 1px solid transparent; border-radius: 999px;
  padding: .72rem 1.15rem; font-weight: 600; font-size: .95rem;
  cursor: pointer; text-decoration: none; transition: .18s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--green), #0ea5e9);
  color: #04110a; box-shadow: 0 10px 30px rgba(34, 197, 94, 0.25);
}
.btn-primary:hover { filter: brightness(1.05); text-decoration: none; }
.btn-ghost {
  background: transparent; border-color: var(--line); color: var(--text);
}
.btn-ghost:hover { border-color: rgba(148,163,184,.4); text-decoration: none; }
.btn-block { width: 100%; }

.hero {
  padding: 4.5rem 0 3rem;
  display: grid; gap: 2.5rem;
}
@media (min-width: 900px) {
  .hero { grid-template-columns: 1.15fr .85fr; align-items: center; }
}
.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .8rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--green); background: rgba(34,197,94,.1);
  border: 1px solid rgba(34,197,94,.25); border-radius: 999px;
  padding: .35rem .75rem; margin-bottom: 1rem;
}
.hero h1 {
  font-size: clamp(2rem, 4.4vw, 3.35rem);
  line-height: 1.12; margin: 0 0 1rem; letter-spacing: -0.03em;
}
.hero h1 span {
  background: linear-gradient(90deg, var(--green), var(--cyan), var(--violet));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lead { color: var(--muted); font-size: 1.08rem; max-width: 42rem; margin: 0 0 1.5rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: .75rem; margin-bottom: 1.5rem; }
.flow-chips {
  display: flex; flex-wrap: wrap; gap: .5rem; align-items: center;
  color: var(--muted); font-size: .86rem;
}
.chip {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 999px; padding: .35rem .7rem; color: var(--text);
}
.chip-arrow { opacity: .45; }

.panel {
  background: linear-gradient(180deg, rgba(18,28,46,.95), rgba(14,22,36,.9));
  border: 1px solid var(--line); border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow); padding: 1.25rem;
}
.panel h3 { margin: 0 0 .85rem; font-size: 1rem; }
.metric-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: .75rem;
}
.metric {
  background: rgba(7,11,18,.55); border: 1px solid var(--line);
  border-radius: 14px; padding: .9rem;
}
.metric .label { color: var(--muted); font-size: .78rem; margin-bottom: .25rem; }
.metric .value { font-size: 1.25rem; font-weight: 700; }
.metric .hint { color: var(--muted); font-size: .72rem; margin-top: .2rem; }
.note {
  margin-top: .9rem; font-size: .78rem; color: var(--amber);
  background: rgba(251,191,36,.08); border: 1px solid rgba(251,191,36,.2);
  border-radius: 12px; padding: .7rem .8rem;
}

section { padding: 3.5rem 0; }
.section-head { max-width: 40rem; margin-bottom: 1.75rem; }
.section-head h2 {
  margin: 0 0 .55rem; font-size: clamp(1.55rem, 2.6vw, 2.1rem);
  letter-spacing: -0.02em;
}
.section-head p { margin: 0; color: var(--muted); }

.engines {
  display: grid; gap: 1rem;
}
@media (min-width: 800px) { .engines { grid-template-columns: repeat(3, 1fr); } }
.card {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.25rem 1.3rem;
  transition: border-color .18s ease, transform .18s ease;
}
.card:hover { border-color: rgba(34,197,94,.35); transform: translateY(-2px); }
.card .icon {
  width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center;
  margin-bottom: .85rem; font-size: 1.2rem;
  background: rgba(34,197,94,.12); border: 1px solid rgba(34,197,94,.22);
}
.card h3 { margin: 0 0 .45rem; font-size: 1.08rem; }
.card p { margin: 0; color: var(--muted); font-size: .94rem; }
.card ul { margin: .7rem 0 0; padding-left: 1.1rem; color: var(--muted); font-size: .9rem; }
.card.cyan .icon { background: rgba(34,211,238,.1); border-color: rgba(34,211,238,.25); }
.card.violet .icon { background: rgba(167,139,250,.1); border-color: rgba(167,139,250,.25); }

.steps {
  display: grid; gap: 1rem;
  counter-reset: step;
}
@media (min-width: 800px) { .steps { grid-template-columns: repeat(5, 1fr); } }
.step {
  position: relative;
  background: rgba(18,28,46,.7); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.1rem;
}
.step::before {
  counter-increment: step; content: counter(step);
  display: inline-grid; place-items: center;
  width: 28px; height: 28px; border-radius: 50%;
  background: linear-gradient(135deg, var(--green), var(--cyan));
  color: #04110a; font-weight: 700; font-size: .85rem; margin-bottom: .7rem;
}
.step h3 { margin: 0 0 .35rem; font-size: .98rem; }
.step p { margin: 0; color: var(--muted); font-size: .86rem; }

.products {
  display: grid; gap: 1rem;
}
@media (min-width: 700px) { .products { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .products { grid-template-columns: repeat(3, 1fr); } }
.product {
  background: linear-gradient(160deg, rgba(18,28,46,.95), rgba(10,16,28,.9));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 1.2rem;
  min-height: 160px;
}
.product .tag {
  display: inline-block; font-size: .72rem; letter-spacing: .06em;
  text-transform: uppercase; color: var(--cyan); margin-bottom: .55rem;
}
.product h3 { margin: 0 0 .4rem; font-size: 1.05rem; }
.product p { margin: 0; color: var(--muted); font-size: .9rem; }

.audience {
  display: grid; gap: 1rem;
}
@media (min-width: 800px) { .audience { grid-template-columns: repeat(4, 1fr); } }
.audience .card { text-align: left; }

.demo-wrap {
  display: grid; gap: 1.25rem;
}
@media (min-width: 900px) { .demo-wrap { grid-template-columns: .95fr 1.05fr; } }
.demo-form label {
  display: block; font-size: .88rem; color: var(--muted); margin-bottom: .35rem;
}
.demo-form input, .demo-form select, .contact-form input, .contact-form textarea, .contact-form select {
  width: 100%; background: rgba(7,11,18,.65); color: var(--text);
  border: 1px solid var(--line); border-radius: 12px;
  padding: .8rem .9rem; font: inherit; margin-bottom: .9rem;
}
.demo-form input:focus, .contact-form input:focus, .contact-form textarea:focus, .contact-form select:focus {
  outline: 2px solid rgba(34,197,94,.35); border-color: rgba(34,197,94,.45);
}
.results { display: grid; gap: .75rem; }
.result-row {
  display: flex; justify-content: space-between; gap: 1rem; align-items: baseline;
  background: rgba(7,11,18,.45); border: 1px solid var(--line);
  border-radius: 14px; padding: .9rem 1rem;
}
.result-row strong { font-size: 1.15rem; }
.badge-ilust {
  font-size: .68rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
  color: var(--amber); border: 1px solid rgba(251,191,36,.3);
  background: rgba(251,191,36,.08); border-radius: 999px; padding: .2rem .5rem;
}

.cta-band {
  background:
    linear-gradient(120deg, rgba(34,197,94,.12), rgba(56,189,248,.1)),
    var(--bg-elev);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.cta-grid {
  display: grid; gap: 1.5rem;
}
@media (min-width: 900px) { .cta-grid { grid-template-columns: 1fr 1fr; align-items: start; } }
.contact-form .row { display: grid; gap: .75rem; }
@media (min-width: 600px) { .contact-form .row { grid-template-columns: 1fr 1fr; } }
.form-status {
  min-height: 1.3rem; font-size: .9rem; margin-top: .5rem; color: var(--muted);
}
.form-status.ok { color: var(--green); }
.form-status.err { color: var(--danger); }

.disclaimer {
  background: rgba(248,113,113,.06); border: 1px solid rgba(248,113,113,.2);
  border-radius: var(--radius); padding: 1rem 1.15rem; color: #fecaca;
  font-size: .88rem;
}
.disclaimer strong { color: #fecaca; }

.site-footer {
  padding: 2.5rem 0 3rem; color: var(--muted); font-size: .88rem;
  border-top: 1px solid var(--line);
}
.footer-grid {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem;
}
.footer-brand { color: var(--text); font-weight: 700; margin-bottom: .35rem; }

@media (max-width: 720px) {
  .nav-links { display: none; }
  .hero { padding-top: 2.5rem; }
}