:root {
  --bg: #0f141b;
  --bg-alt: #131a23;
  --surface: #171f2a;
  --border: #243041;
  --text: #e6edf5;
  --muted: #93a1b4;
  --blue: #2f6fe8;
  --cyan: #45e3f2;
  --grad: linear-gradient(120deg, var(--blue), var(--cyan));
  --radius: 16px;
  --font-head: "Exo 2", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--font-head); line-height: 1.15; margin: 0 0 .6em; }
h1 { font-size: clamp(2.2rem, 5.5vw, 4rem); font-weight: 700; letter-spacing: -.01em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }
p { margin: 0 0 1em; }
a { color: inherit; text-decoration: none; }

.container { width: min(1160px, 100% - 32px); margin-inline: auto; }
.container--narrow { width: min(780px, 100% - 32px); }

.eyebrow {
  font: 600 .8rem/1 var(--font-body);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 1rem;
}
.lead { font-size: 1.15rem; color: var(--muted); max-width: 640px; }

.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.grad-blue { color: var(--blue); }
.grad-cyan { color: var(--cyan); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .9rem 1.6rem; border-radius: 999px;
  font: 600 1rem/1 var(--font-body);
  border: 1px solid transparent; cursor: pointer;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
}
.btn--primary { background: var(--grad); color: #071018; box-shadow: 0 8px 30px -8px rgba(69, 227, 242, .5); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 36px -8px rgba(69, 227, 242, .7); }
.btn--ghost { border-color: var(--border); color: var(--text); }
.btn--ghost:hover { border-color: var(--cyan); }
.btn--sm { padding: .6rem 1.1rem; font-size: .9rem; }
.btn--block { width: 100%; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(15, 20, 27, .75);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s;
}
.nav.is-scrolled { border-bottom-color: var(--border); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav__links { display: flex; align-items: center; gap: 2rem; font-weight: 500; }
.nav__links a:not(.btn) { color: var(--muted); transition: color .2s; }
.nav__links a:not(.btn):hover { color: var(--text); }
.nav__toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav__toggle span { display: block; width: 24px; height: 2px; background: var(--text); margin: 6px 0; transition: transform .3s; }

.brand { display: inline-flex; align-items: center; gap: .6rem; }
.brand__mark { width: 40px; height: 30px; }
.brand__name { font: 700 1.3rem/1 var(--font-head); letter-spacing: .04em; }

/* Hero */
.hero { position: relative; overflow: hidden; padding: clamp(80px, 12vw, 150px) 0 100px; }
.hero__glow {
  position: absolute; inset: -20% -10% auto; height: 700px;
  background:
    radial-gradient(40% 50% at 30% 30%, rgba(47, 111, 232, .28), transparent 70%),
    radial-gradient(35% 45% at 75% 25%, rgba(69, 227, 242, .18), transparent 70%);
  pointer-events: none;
}
.hero__net { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .55; pointer-events: none; }
.hero__inner { position: relative; text-align: center; display: flex; flex-direction: column; align-items: center; }
.hero h1 { max-width: 900px; }
.hero__cta { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; margin: 1rem 0 4rem; }
.hero__stats {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--border); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  width: min(760px, 100%);
}
.hero__stats li { background: var(--bg-alt); padding: 1.4rem 1rem; display: flex; flex-direction: column; gap: .25rem; }
.hero__stats strong { font: 700 1.8rem/1 var(--font-head); background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__stats span { color: var(--muted); font-size: .9rem; }

/* Sections */
.section { padding: clamp(70px, 10vw, 120px) 0; }
.section--alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.section__head { text-align: center; max-width: 720px; margin: 0 auto 3.5rem; }

.grid { display: grid; gap: 1.5rem; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 2rem; transition: transform .3s, border-color .3s;
}
.card:hover { transform: translateY(-4px); border-color: rgba(69, 227, 242, .4); }
.card p { color: var(--muted); }
.card--featured { border-color: rgba(69, 227, 242, .35); box-shadow: 0 0 0 1px rgba(69, 227, 242, .1), 0 20px 50px -20px rgba(47, 111, 232, .45); }
.card__icon {
  width: 52px; height: 52px; border-radius: 14px; margin-bottom: 1.4rem;
  display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(47, 111, 232, .2), rgba(69, 227, 242, .15));
  border: 1px solid rgba(69, 227, 242, .25);
}
.card__icon svg { width: 26px; height: 26px; fill: none; stroke: var(--cyan); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.checks { list-style: none; padding: 0; margin: 1.2rem 0 0; display: grid; gap: .5rem; }
.checks li { padding-left: 1.6rem; position: relative; font-size: .95rem; }
.checks li::before {
  content: ""; position: absolute; left: 0; top: .45em; width: 12px; height: 7px;
  border-left: 2px solid var(--cyan); border-bottom: 2px solid var(--cyan); transform: rotate(-45deg);
}

/* Steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; counter-reset: s; }
.step { position: relative; padding-top: 1.5rem; border-top: 1px solid var(--border); }
.step::before { content: ""; position: absolute; top: -1px; left: 0; width: 48px; height: 2px; background: var(--grad); }
.step__n { font: 700 2.4rem/1 var(--font-head); color: transparent; -webkit-text-stroke: 1px var(--cyan); display: block; margin-bottom: 1rem; }
.step p { color: var(--muted); }

/* Use cases */
.usecase {
  padding: 2rem; border-radius: var(--radius); border: 1px solid var(--border);
  background: linear-gradient(160deg, var(--surface), var(--bg));
}
.usecase p { color: var(--muted); margin: 0; }
.tag {
  display: inline-block; font-size: .75rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  color: var(--cyan); border: 1px solid rgba(69, 227, 242, .3); border-radius: 999px; padding: .3rem .8rem; margin-bottom: 1rem;
}

/* Why */
.why { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.why__list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.why__list li { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; }
.why__list h3 { font-size: 1.05rem; }
.why__list p { color: var(--muted); margin: 0; font-size: .95rem; }

/* FAQ */
.faq { display: grid; gap: .8rem; }
.faq details { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 0 1.4rem; }
.faq details[open] { border-color: rgba(69, 227, 242, .35); }
.faq summary {
  cursor: pointer; list-style: none; padding: 1.2rem 0; font-weight: 600;
  display: flex; justify-content: space-between; gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--cyan); font-size: 1.4rem; line-height: 1; transition: transform .3s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--muted); padding-bottom: 1.2rem; margin: 0; }

/* CTA / Form */
.cta { position: relative; overflow: hidden; }
.cta::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(50% 60% at 20% 50%, rgba(47, 111, 232, .2), transparent 70%);
  pointer-events: none;
}
.cta__inner { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.form {
  background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 2rem;
  display: grid; gap: 1rem;
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form label { display: grid; gap: .4rem; font-size: .9rem; font-weight: 500; color: var(--muted); }
.form input, .form textarea {
  width: 100%; background: var(--bg); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px; padding: .8rem 1rem;
  font: inherit; font-size: 1rem; resize: vertical; transition: border-color .2s, box-shadow .2s;
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(69, 227, 242, .15); }
.form__note { margin: 0; font-size: .9rem; color: var(--cyan); min-height: 1.4em; text-align: center; }

/* Footer */
.footer { border-top: 1px solid var(--border); padding: 2rem 0; color: var(--muted); font-size: .9rem; }
.footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.footer p { margin: 0; }
.footer a:hover { color: var(--cyan); }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* Responsive */
@media (max-width: 960px) {
  .grid--3, .steps { grid-template-columns: 1fr 1fr; }
  .why, .cta__inner { grid-template-columns: 1fr; gap: 2.5rem; }
}

@media (max-width: 760px) {
  .nav__toggle { display: block; }
  .nav__links {
    position: fixed; inset: 72px 0 auto; flex-direction: column; gap: 1.4rem;
    padding: 2rem 16px; background: var(--bg); border-bottom: 1px solid var(--border);
    transform: translateY(-120%); transition: transform .35s ease; z-index: -1;
  }
  .nav.is-open .nav__links { transform: none; }
  .nav.is-open .nav__toggle span:first-child { transform: translateY(4px) rotate(45deg); }
  .nav.is-open .nav__toggle span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .grid--3, .grid--2, .steps, .why__list, .form__row { grid-template-columns: 1fr; }
  .hero__stats { grid-template-columns: 1fr; }
  .footer__inner { flex-direction: column; text-align: center; }
}