:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --ink: #0f172a;
  --ink-2: #334155;
  --muted: #64748b;
  --line: #e2e8f0;
  --accent: #059669;
  --accent-dark: #047857;
  --accent-soft: #ecfdf5;
  --accent-line: #a7f3d0;
  --dark: #0b1f1c;
  --radius: 14px;
  --max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
}
a { color: var(--accent-dark); }
img, video { max-width: 100%; display: block; }
h1, h2, h3 { line-height: 1.15; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4.4vw, 3rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); font-weight: 750; }
h3 { font-size: 1.2rem; font-weight: 700; }
p { margin: 0; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
section { padding: 72px 0; }
.kicker {
  display: inline-block;
  color: var(--accent-dark);
  font-weight: 700;
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 12px;
}
.intro { color: var(--muted); max-width: 640px; margin-top: 14px; font-size: 1.1rem; }

/* Header */
header.top {
  position: sticky; top: 0; z-index: 10;
  background: rgba(248, 250, 252, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
header.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; text-decoration: none; color: var(--ink); }
.brand .dot { width: 14px; height: 14px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.brand small { color: var(--muted); font-weight: 500; }
nav.menu { display: flex; gap: 22px; }
nav.menu a { color: var(--ink-2); text-decoration: none; font-size: .95rem; }
nav.menu a:hover { color: var(--accent-dark); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 22px; border-radius: 10px;
  font-weight: 700; font-size: 1rem; text-decoration: none;
  border: 1px solid transparent; cursor: pointer; transition: transform .1s ease, background .15s ease;
  line-height: 1.25; text-align: center;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-secondary { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent-dark); }
.btn-small { padding: 10px 16px; font-size: .95rem; }

/* Hero */
.hero { padding: 84px 0 64px; }
.hero .wrap { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero h1 em { font-style: normal; color: var(--accent-dark); }
.hero .lead { margin-top: 20px; font-size: 1.2rem; color: var(--ink-2); max-width: 560px; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero .actions .btn-secondary { max-width: 420px; }
.hero .trust { margin-top: 22px; color: var(--muted); font-size: .95rem; }
.avant-apres { display: grid; gap: 12px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 22px;
}
.avant-apres .card strong { display: block; font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 8px; }
.avant-apres .avant strong { color: #b45309; }
.avant-apres .apres { border-color: var(--accent-line); background: var(--accent-soft); }
.avant-apres .apres strong { color: var(--accent-dark); }
.avant-apres ul { margin: 0; padding-left: 18px; color: var(--ink-2); }
.avant-apres li + li { margin-top: 4px; }

/* Video */
.video { background: var(--dark); color: #e6f4f1; }
.video .kicker { color: #6ee7b7; }
.video h2 { color: #fff; }
.video .intro { color: #b6cfc9; }
.video-frame {
  margin-top: 32px; border-radius: var(--radius); overflow: hidden;
  border: 1px solid rgba(255,255,255,.12); box-shadow: 0 30px 80px rgba(0,0,0,.45);
  background: #000;
}
.video-frame video { width: 100%; aspect-ratio: 16 / 9; }
.video .caption { margin-top: 18px; color: #b6cfc9; text-align: center; }
.video .caption a { color: #6ee7b7; font-weight: 600; }
.video .caption small { display: block; margin-top: 6px; color: #7f9d96; font-size: .9rem; }

/* Résultats */
.grid { display: grid; gap: 18px; margin-top: 36px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.result .tag {
  display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase;
  color: var(--accent-dark); background: var(--accent-soft); border-radius: 999px; padding: 4px 10px; margin-bottom: 12px;
}
.result h3 { margin-bottom: 8px; }
.result p { color: var(--ink-2); }
.result p.gain { margin-top: 12px; color: var(--accent-dark); font-weight: 600; font-size: .95rem; }

/* Offres */
.offres { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.offre { display: flex; flex-direction: column; background: var(--bg); }
.offre .prix { font-size: 1.35rem; font-weight: 800; color: var(--ink); margin: 6px 0 12px; }
.offre .prix small { display: block; font-size: .85rem; color: var(--muted); font-weight: 500; margin-top: 2px; }
.offre .resultat { color: var(--ink-2); }
.offre ul { margin: 14px 0 0; padding-left: 18px; color: var(--ink-2); font-size: .95rem; }
.offre li + li { margin-top: 4px; }
.offre .exemple {
  margin-top: 18px; padding-top: 14px; border-top: 1px dashed var(--line);
  font-size: .95rem; color: var(--ink-2);
}
.offre .exemple strong { color: var(--accent-dark); }
.maintenance { margin-top: 40px; }
.maintenance h3 { margin-bottom: 6px; }
.maintenance p { color: var(--muted); }
.table-wrap { overflow-x: auto; margin-top: 18px; }
table { width: 100%; border-collapse: collapse; background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
th, td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--line); }
th { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
tr:last-child td { border-bottom: 0; }
td.prix { white-space: nowrap; font-weight: 700; }
.note-premiers {
  margin-top: 28px; padding: 18px 22px; border-radius: var(--radius);
  background: var(--accent-soft); border: 1px solid var(--accent-line); color: var(--ink-2);
}

/* Process */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 36px; }
.step { position: relative; padding-top: 22px; }
.step::before {
  counter-increment: step; content: counter(step);
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 800;
  margin-bottom: 14px;
}
.step h3 { font-size: 1.1rem; margin-bottom: 8px; }
.step p { color: var(--ink-2); font-size: .97rem; }
.step .duree { display: block; margin-top: 10px; color: var(--accent-dark); font-weight: 600; font-size: .9rem; }

/* Contact */
.contact { background: var(--surface); border-top: 1px solid var(--line); }
.contact .wrap { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: start; }
.contact .aside p { color: var(--ink-2); margin-top: 14px; }
.contact .aside ul { margin: 18px 0 0; padding-left: 0; list-style: none; color: var(--ink-2); }
.contact .aside li { padding-left: 28px; position: relative; margin-top: 8px; }
.contact .aside li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 800; }
form { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.field { margin-bottom: 16px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 6px; color: var(--ink-2); }
label span { color: var(--muted); font-weight: 400; }
input, textarea {
  width: 100%; font: inherit; color: var(--ink);
  padding: 12px 14px; border: 1px solid #cbd5e1; border-radius: 10px; background: #fff;
}
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: var(--accent); }
textarea { min-height: 120px; resize: vertical; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
form .btn { width: 100%; margin-top: 4px; }
form .btn[disabled] { opacity: .6; cursor: wait; }
.form-note { margin-top: 12px; font-size: .88rem; color: var(--muted); text-align: center; }
.alert { margin-top: 16px; padding: 14px 16px; border-radius: 10px; font-size: .97rem; }
.alert.ok { background: var(--accent-soft); border: 1px solid var(--accent-line); color: var(--accent-dark); }
.alert.ko { background: #fef2f2; border: 1px solid #fecaca; color: #b91c1c; }
.success { padding: 30px 26px; text-align: center; }
.success h3 { color: var(--accent-dark); font-size: 1.4rem; margin-bottom: 10px; }
.success p { color: var(--ink-2); }

/* Footer */
footer { padding: 36px 0 44px; border-top: 1px solid var(--line); color: var(--muted); font-size: .93rem; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 18px; }
footer strong { color: var(--ink); }
footer a { color: var(--ink-2); }
footer .legal { flex-basis: 100%; font-size: .85rem; color: #94a3b8; }

/* Responsive */
@media (max-width: 900px) {
  .hero .wrap, .contact .wrap { grid-template-columns: 1fr; gap: 32px; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  nav.menu { display: none; }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  section { padding: 52px 0; }
  .hero { padding: 48px 0 40px; }
  .grid-3, .grid-2, .steps { grid-template-columns: 1fr; }
  .row { grid-template-columns: 1fr; gap: 0; }
  .hero .actions .btn { width: 100%; }
  form { padding: 20px 16px; }
  th, td { padding: 12px 10px; }
}