:root {
  --bg: #070b14;
  --bg-alt: #0c1322;
  --surface: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.09);
  --text: #e8edf5;
  --muted: #94a0b4;
  --green: #3ddc84;
  --cyan: #38bdf8;
  --flame: #ff8a3d;
  --radius: 18px;
  --font-head: "Space Grotesk", 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-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--font-head); line-height: 1.12; margin: 0 0 .6em; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.6rem, 6.5vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }

.container { width: min(1160px, 100% - 3rem); margin-inline: auto; }

.skip {
  position: absolute; left: 1rem; top: -100px; z-index: 100;
  background: var(--green); color: #04120a; padding: .6rem 1rem; border-radius: 8px;
}
.skip:focus { top: 1rem; }

.eyebrow {
  font-family: var(--font-head);
  font-size: .8rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .18em;
  color: var(--green);
  margin-bottom: 1rem;
}
.grad {
  background: linear-gradient(90deg, var(--green), var(--cyan));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .95rem 1.6rem; border-radius: 999px;
  background: linear-gradient(135deg, var(--green), #22c3a6);
  color: #04120a; font-weight: 600;
  box-shadow: 0 10px 30px -10px rgba(61, 220, 132, .6);
  transition: transform .2s, box-shadow .2s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 16px 40px -10px rgba(61, 220, 132, .75); }
.btn--ghost {
  background: transparent; color: var(--text);
  border: 1px solid var(--border); box-shadow: none;
  backdrop-filter: blur(6px);
}
.btn--ghost:hover { border-color: var(--green); box-shadow: none; }
.btn--small { padding: .6rem 1.15rem; font-size: .92rem; }

/* Nav */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 50;
  transition: background .3s, border-color .3s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(7, 11, 20, .78);
  backdrop-filter: blur(14px);
  border-color: var(--border);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.nav__logo img { height: 46px; width: auto; }
.nav__menu { display: flex; align-items: center; gap: 2rem; font-weight: 500; }
.nav__menu a:not(.btn) { color: var(--muted); transition: color .2s; }
.nav__menu a:not(.btn):hover { color: var(--text); }
.nav__toggle { display: none; background: none; border: 0; padding: .5rem; cursor: pointer; }
.nav__toggle span { display: block; width: 24px; height: 2px; background: var(--text); margin: 5px 0; transition: .3s; }

/* Hero */
.hero {
  position: relative; min-height: min(100vh, 960px); min-height: min(100svh, 960px);
  display: flex; align-items: center; overflow: hidden;
  padding: 120px 0 80px;
}
.hero__bg {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(7,11,20,.96) 0%, rgba(7,11,20,.75) 45%, rgba(7,11,20,.25) 100%),
    linear-gradient(0deg, var(--bg) 0%, transparent 35%),
    url("assets/lancement.png") 70% center / cover no-repeat;
  transform: scale(1.05);
  animation: drift 20s ease-in-out infinite alternate;
}
.hero__bg::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(600px circle at 15% 40%, rgba(61,220,132,.14), transparent 60%);
}
@keyframes drift { to { transform: scale(1.12) translateY(-12px); } }
.hero__content { position: relative; max-width: 760px; margin-left: max(1.5rem, (100% - 1160px) / 2); }
.hero__lead { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: #c4cddb; max-width: 600px; margin-bottom: 2.2rem; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; }
.hero__scroll {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  width: 26px; height: 42px; border: 2px solid var(--border); border-radius: 20px;
}
.hero__scroll span {
  position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; margin-left: -2px;
  background: var(--green); border-radius: 2px; animation: scroll 1.8s infinite;
}
@keyframes scroll { 0% { opacity: 0; transform: translateY(0); } 40% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }

/* Sections */
.section { padding: clamp(5rem, 10vw, 8rem) 0; position: relative; }
.section--alt { background: var(--bg-alt); }
.section__head { max-width: 640px; margin-bottom: 3.5rem; }

/* Split */
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(2rem, 6vw, 5rem); align-items: center; }
.split__media { position: relative; }
.split__media img {
  border-radius: var(--radius); width: 100%; aspect-ratio: 4 / 3; object-fit: cover;
  border: 1px solid var(--border);
}
.split__media::before {
  content: ""; position: absolute; inset: -18px 18px 18px -18px; z-index: -1;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(61,220,132,.35), rgba(56,189,248,.15));
  filter: blur(30px);
}
.split__text p { color: var(--muted); font-size: 1.08rem; }
.split__text strong { color: var(--text); }
.tags { list-style: none; padding: 0; margin: 1.8rem 0 0; display: flex; flex-wrap: wrap; gap: .6rem; }
.tags li {
  padding: .4rem .95rem; border-radius: 999px; font-size: .88rem;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
}

/* Cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.card {
  padding: 2.2rem; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  transition: transform .3s, border-color .3s, background .3s;
}
.card:hover { transform: translateY(-6px); border-color: rgba(61,220,132,.4); background: rgba(61,220,132,.04); }
.card p { color: var(--muted); margin: 0; }
.card__icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(61,220,132,.18), rgba(56,189,248,.12));
  margin-bottom: 1.4rem;
}
.card__icon svg { width: 26px; height: 26px; fill: none; stroke: var(--green); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* 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: 2rem; border-top: 1px solid var(--border); }
.step::before {
  content: ""; position: absolute; top: -1px; left: 0; width: 48px; height: 2px;
  background: linear-gradient(90deg, var(--flame), var(--green));
}
.step__num { font-family: var(--font-head); font-size: 2.4rem; font-weight: 700; color: rgba(255,255,255,.12); display: block; margin-bottom: .6rem; }
.step p { color: var(--muted); margin: 0; }

/* CTA / Contact */
.section--cta {
  background:
    radial-gradient(800px circle at 0% 0%, rgba(61,220,132,.12), transparent 55%),
    radial-gradient(700px circle at 100% 100%, rgba(255,138,61,.10), transparent 55%),
    var(--bg-alt);
}
.cta { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(2rem, 6vw, 5rem); align-items: start; }
.cta__text p { color: var(--muted); font-size: 1.08rem; }
.cta__form {
  border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border); background: #fff;
  box-shadow: 0 30px 80px -30px rgba(0,0,0,.7);
}
.cta__form iframe { width: 100%; height: 640px; border: 0; display: block; }
.cta__fallback { display: block; padding: .9rem 1.2rem; font-size: .9rem; background: var(--bg); color: var(--muted); border-top: 1px solid var(--border); }
.cta__fallback:hover { color: var(--green); }
.socials { display: flex; gap: .8rem; margin-top: 2rem; flex-wrap: wrap; }
.socials a {
  display: inline-flex; align-items: center; gap: .55rem;
  padding: .7rem 1.1rem; border-radius: 12px;
  background: var(--surface); border: 1px solid var(--border);
  transition: border-color .2s, transform .2s;
}
.socials a:hover { border-color: var(--green); transform: translateY(-2px); }
.socials svg { width: 18px; height: 18px; fill: currentColor; }

/* Footer */
.footer { padding: 2.5rem 0; border-top: 1px solid var(--border); }
.footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; }
.footer p { margin: 0; color: var(--muted); font-size: .9rem; }
.footer nav { display: flex; gap: 1.5rem; }
.footer nav a { color: var(--muted); font-size: .9rem; }
.footer nav a:hover { color: var(--green); }
.footer p a:hover { color: var(--green); }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 960px) {
  .cards { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 2.5rem; }
  .split, .cta { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav__toggle { display: block; }
  .nav__menu {
    position: fixed; inset: 76px 0 auto; flex-direction: column; gap: 1.4rem;
    padding: 2rem; background: rgba(7,11,20,.97); backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%); opacity: 0; pointer-events: none; transition: .35s;
  }
  .nav.is-open .nav__menu { transform: none; opacity: 1; pointer-events: auto; }
  .nav.is-open { background: rgba(7,11,20,.97); }
  .nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav.is-open .nav__toggle span:nth-child(2) { opacity: 0; }
  .nav.is-open .nav__toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero__bg {
    background:
      linear-gradient(0deg, var(--bg) 5%, rgba(7,11,20,.7) 55%, rgba(7,11,20,.45) 100%),
      url("assets/lancement.png") 55% center / cover no-repeat;
  }
  .steps { grid-template-columns: 1fr; }
  .footer__inner { flex-direction: column; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}