/* relaIA : feuille de style du site. Polices hébergées localement (dossier fonts/), aucune ressource externe. */
@font-face { font-family: "Archivo"; src: url("fonts/archivo.woff2") format("woff2"); font-weight: 100 900; font-stretch: 62% 125%; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url("fonts/instrument-sans.woff2") format("woff2"); font-weight: 400 700; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("fonts/jetbrains-mono.woff2") format("woff2"); font-weight: 400 600; font-display: swap; }

:root {
  --paper: #f2f5f4;
  --surface: #ffffff;
  --ink: #111b1f;
  --muted: #55666a;
  --line: #d3dcda;
  --petrol: #0f4c4a;
  --petrol-soft: #dcebe8;
  --relay: #ff5a36;
  --mist: #c9d6d3;
  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --body: "Instrument Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0d1416; --surface: #142024; --ink: #e8efee; --muted: #9fb2b0; --line: #26363a;
    --petrol: #5fb3a9; --petrol-soft: #16312f; --relay: #ff7452; --mist: #2c3e40;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--body); font-size: 1.0625rem; line-height: 1.6; padding-inline: 20px; }
img, svg { max-width: 100%; }
a { color: var(--petrol); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--relay); outline-offset: 3px; }
h1, h2, h3 { font-family: var(--display); line-height: 1.08; margin: 0; text-wrap: balance; }
p { margin: 0; }
.wrap { max-width: 1040px; margin: 0 auto; }
.label { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--petrol); }

/* En-tête */
.site-head { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding-block: 22px; flex-wrap: wrap; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.logo svg { width: 46px; height: auto; }
.lane-a { stroke: var(--petrol); }
.lane-b { stroke: var(--ink); }
.baton { fill: var(--relay); }
.word { font-family: var(--display); font-weight: 850; font-stretch: 118%; font-size: 1.6rem; letter-spacing: -0.035em; }
.word .ia { color: var(--relay); }
.nav { display: flex; gap: 22px; flex-wrap: wrap; font-size: 0.95rem; }
.nav a { color: var(--ink); text-decoration: none; }
.nav a:hover { color: var(--petrol); text-decoration: underline; }

/* Accueil */
.hero { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center; padding-block: 56px 72px; }
.hero h1 { font-size: clamp(2.8rem, 8.5vw, 5.6rem); font-weight: 850; font-stretch: 118%; letter-spacing: -0.035em; }
.hero h1 span { color: var(--relay); }
.hero .lead { font-size: clamp(1.1rem, 2.4vw, 1.35rem); color: var(--muted); max-width: 34ch; margin-top: 22px; }
.cta { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; margin-top: 30px; }
.btn { display: inline-block; background: var(--petrol); color: var(--paper); text-decoration: none; font-weight: 600; padding: 13px 20px; border-radius: 8px; }
.btn:hover { filter: brightness(1.1); }
.cta .mail { font-family: var(--mono); font-size: 0.95rem; color: var(--ink); user-select: all; }
.relay-art { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 28px; }
.relay-art svg { width: 100%; height: auto; display: block; }
.relay-art .track { stroke: var(--mist); }
.relay-art .run-a { stroke: var(--petrol); }
.relay-art .run-b { stroke: var(--ink); }
.relay-art text { fill: var(--muted); font-family: var(--mono); font-size: 11px; }
@media (prefers-reduced-motion: no-preference) {
  .relay-art .moving { animation: handoff 1.8s cubic-bezier(.6,.05,.3,1) 0.6s 1 both; }
  @keyframes handoff { from { transform: translateX(-120px); } to { transform: translateX(0); } }
}

/* Sections */
.section { padding-block: 64px; border-top: 1px solid var(--line); display: grid; gap: 32px; }
.section-head { display: grid; gap: 12px; max-width: 62ch; }
.section-head h2 { font-size: clamp(1.7rem, 4vw, 2.5rem); font-weight: 800; font-stretch: 112%; letter-spacing: -0.015em; }
.section-head p { color: var(--muted); }

.offers { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 18px; }
.offer { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 24px; display: grid; gap: 12px; align-content: start; }
.offer.main { border-color: var(--petrol); }
.offer h3 { font-size: 1.3rem; font-weight: 750; font-stretch: 108%; }
.offer p { color: var(--muted); }
.offer ul { margin: 0; padding-left: 1.1em; display: grid; gap: 6px; }
.tag { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; padding: 3px 9px; border-radius: 999px; width: fit-content; }
.tag.on { background: var(--relay); color: #111b1f; }
.tag.soon { border: 1px solid var(--line); color: var(--muted); }
.price { font-family: var(--mono); font-size: 0.9rem; color: var(--ink); }

.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: s; }
.steps li { counter-increment: s; display: grid; gap: 8px; align-content: start; border-top: 3px solid var(--petrol); padding-top: 14px; }
.steps li::before { content: counter(s); font-family: var(--display); font-weight: 850; font-stretch: 118%; font-size: 2rem; color: var(--petrol); line-height: 1; }
.steps li.you { border-top-color: var(--relay); }
.steps li.you::before { color: var(--relay); }
.steps h3 { font-size: 1.1rem; font-weight: 700; }
.steps p { color: var(--muted); font-size: 0.97rem; }
.who { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }

.promises { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.promise { display: grid; gap: 8px; align-content: start; }
.promise h3 { font-size: 1.2rem; font-weight: 750; font-stretch: 108%; }
.promise p { color: var(--muted); }

.contact { background: var(--petrol); color: var(--paper); border-radius: 12px; padding: clamp(28px, 6vw, 56px); display: grid; gap: 16px; }
.contact h2 { font-size: clamp(1.8rem, 5vw, 3rem); font-weight: 850; font-stretch: 116%; letter-spacing: -0.02em; }
.contact h2 span { color: var(--relay); }
.contact p { opacity: 0.9; max-width: 50ch; }
.contact .mail { font-family: var(--mono); font-size: clamp(1rem, 3vw, 1.35rem); color: var(--paper); user-select: all; word-break: break-all; }
.contact a.btn { background: var(--paper); color: var(--petrol); width: fit-content; }

.site-foot { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-block: 32px 40px; color: var(--muted); font-size: 0.9rem; }
.site-foot a { color: var(--muted); }

/* Pages légales */
.legal { max-width: 70ch; padding-block: 40px 64px; display: grid; gap: 22px; }
.legal h1 { font-size: clamp(2rem, 6vw, 3rem); font-weight: 850; font-stretch: 116%; letter-spacing: -0.02em; }
.legal h2 { font-size: 1.25rem; font-weight: 750; font-stretch: 108%; margin-top: 10px; }
.legal p, .legal li { color: var(--ink); }
.legal .muted { color: var(--muted); font-size: 0.92rem; }

@media (max-width: 860px) {
  .hero, .offers { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .promises { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .steps { grid-template-columns: 1fr; }
  .nav { gap: 16px; }
}