/* ARKHEE — site vitrine.
   Direction : architecture. Le logo, ce sont des piliers doriques ; la page
   est bâtie comme une façade — colonnade verticale, entablement de filets,
   plaques gravées. Bronze pour la voix de la marque, cyan pour les actions
   (même grammaire que l'app). Aucune couleur en dur : tout vient de tokens.css. */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color-scheme: dark;
  background: var(--bg-deep);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  overflow-x: hidden;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ── Atmosphère : halo marine + grain + colonnade ────────────────────────── */
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(79, 209, 197, .10), transparent 60%),
    radial-gradient(90% 60% at 50% 105%, rgba(201, 154, 98, .09), transparent 65%);
}
/* Grain : SVG inline, aucune requête réseau. */
body::after {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  opacity: .5; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.35'/%3E%3C/svg%3E");
}
main, header, footer { position: relative; z-index: 1; }

.wrap { width: min(1160px, 92vw); margin-inline: auto; }

/* La colonnade : deux filets verticaux qui traversent toute la page. */
.colonnade { position: fixed; inset: 0; z-index: 0; pointer-events: none; }
.colonnade i {
  position: absolute; top: 0; bottom: 0; width: 1px;
  background: linear-gradient(180deg, transparent,
    var(--border-soft) 12%, var(--border-soft) 88%, transparent);
}
.colonnade i:nth-child(1) { left: max(4vw, calc(50% - 580px)); }
.colonnade i:nth-child(2) { right: max(4vw, calc(50% - 580px)); }
@media (max-width: 900px) { .colonnade { display: none; } }

/* ── Barre haute ─────────────────────────────────────────────────────────── */
.top {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; padding: 22px 0;
}
.mark { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.mark img { width: 40px; height: 40px; border-radius: 11px; }
.mark b {
  display: block; font-family: var(--font-display); font-size: 19px;
  letter-spacing: .22em; color: var(--text); font-weight: 600;
}
.mark span {
  display: block; font-size: 10px; letter-spacing: .28em;
  text-transform: uppercase; color: var(--gold);
}
.top nav { display: flex; align-items: center; gap: 26px; }
.top nav a {
  color: var(--text-soft); text-decoration: none; font-size: 14px;
  letter-spacing: .04em;
}
.top nav a:hover { color: var(--accent); }
@media (max-width: 760px) { .top nav a.hide-s { display: none; } }
@media (max-width: 760px) { .top nav { gap: 12px; } }
@media (max-width: 620px) {
  .top nav a:not(.btn) { display: none; }
  .top nav .btn { padding: 10px 16px; font-size: 14px; }
}
@media (max-width: 430px) {
  /* « Se connecter » reste : c'est le geste le plus fréquent sur mobile.
     C'est le nom de la marque qui cède la place, pas l'action. */
  .mark div { display: none; }
  .top { padding: 16px 0; }
  .top nav { gap: 8px; }
  .top nav .btn { padding: 9px 14px; font-size: 13.5px; }
}

/* ── Boutons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 13px 26px; border-radius: 999px; font-size: 15px;
  font-weight: 600; text-decoration: none; cursor: pointer;
  border: 1px solid transparent; transition: transform .18s ease,
    box-shadow .25s ease, border-color .2s ease, color .2s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--grad-ring); color: var(--ink);
  box-shadow: 0 2px 14px rgba(79, 209, 197, .28);
}
.btn-primary:hover { box-shadow: 0 6px 26px rgba(79, 209, 197, .42); }
.btn-ghost { border-color: var(--border-strong); color: var(--text-soft); }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold-bright); }

/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero { padding: 76px 0 92px; text-align: center; }
.eyebrow {
  font-size: 11px; letter-spacing: .34em; text-transform: uppercase;
  color: var(--gold); margin: 0 0 26px;
}
.hero h1 {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(2.6rem, 7.5vw, 5.4rem); line-height: 1.04;
  letter-spacing: -.015em; margin: 0 0 22px;
}
.hero h1 em {
  font-style: normal; display: block; color: var(--gold-bright);
  font-size: .48em; letter-spacing: .3em; text-transform: uppercase;
  margin-top: 20px;
}
.lede {
  max-width: 62ch; margin: 0 auto 34px; color: var(--text-soft);
  font-size: clamp(1rem, 1.6vw, 1.2rem);
}
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-note { margin-top: 22px; font-size: 13px; color: var(--text-muted); }

/* Entablement : le filet qui court sous le hero. */
.rule {
  height: 1px; margin: 0; border: 0;
  background: var(--grad-hairline); opacity: .55;
}

/* ── Piliers (ce que fait ARKHEE) ─────────────────────────────────────────── */
.section { padding: 88px 0; }
.section-label {
  font-size: 11px; letter-spacing: .3em; text-transform: uppercase;
  color: var(--gold); margin: 0 0 14px;
}
.section h2 {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(1.8rem, 3.6vw, 2.7rem); line-height: 1.15;
  margin: 0 0 18px; letter-spacing: -.01em;
}
.section > .wrap > p { max-width: 68ch; color: var(--text-soft); }

.pillars {
  display: grid; gap: 1px; margin-top: 52px;
  grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
  background: var(--border-soft);
  border-block: 1px solid var(--border-soft);
}
.pillar {
  background: var(--bg-deep); padding: 34px 28px 30px;
  transition: background .3s ease;
}
.pillar:hover { background: var(--bg); }
.pillar figure {
  margin: 0 0 20px; padding: 14px 0; border-radius: var(--radius-sm);
  background: radial-gradient(70% 90% at 50% 50%,
    rgba(201, 154, 98, .07), transparent 70%);
}
/* Scènes 4:3 dessinées par Rams : on respecte leur cadrage, on ne les
   écrase pas dans un carré d'icône. */
.pillar img { display: block; width: 100%; max-width: 200px; height: auto; }
.pillar h3 {
  font-family: var(--font-display); font-size: 1.22rem; font-weight: 600;
  margin: 0 0 10px;
}
.pillar p { margin: 0; color: var(--text-soft); font-size: 15px; }

/* ── Le pacte (propose / valide / exécute) ───────────────────────────────── */
.steps { display: grid; gap: 26px; margin-top: 48px;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.step { position: relative; padding-top: 26px; border-top: 1px solid var(--gold-deep); }
.step b {
  position: absolute; top: -13px; left: 0; background: var(--bg-deep);
  padding-right: 12px; font-family: var(--font-display); color: var(--gold);
  font-size: 15px; letter-spacing: .18em;
}
.step h3 { font-size: 1.05rem; margin: 0 0 8px; }
.step p { margin: 0; color: var(--text-soft); font-size: 15px; }

/* ── Plaques de téléchargement (QR) ──────────────────────────────────────── */
.plaques {
  display: grid; gap: 26px; margin-top: 46px;
  grid-template-columns: repeat(auto-fit, minmax(268px, 1fr));
}
.plaque {
  background: linear-gradient(180deg, var(--bg-elev), var(--bg));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 26px; text-align: center;
  box-shadow: var(--shadow);
}
.plaque .os {
  font-size: 11px; letter-spacing: .28em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 20px;
}
.qr {
  width: 178px; height: 178px; margin: 0 auto 20px; padding: 12px;
  background: var(--text); border-radius: 12px;
  display: grid; place-items: center;
}
.qr img { width: 100%; height: 100%; display: block; }
/* L'emplacement encore vide : hachures, pas un faux QR. */
.qr.empty {
  background:
    repeating-linear-gradient(45deg, var(--bg-elev2) 0 9px,
      var(--bg-elev) 9px 18px);
  border: 1px dashed var(--border-strong);
  color: var(--text-muted); font-size: 13px; padding: 20px;
}
.plaque h3 { font-family: var(--font-display); font-size: 1.2rem; margin: 0 0 6px; }
.plaque p { margin: 0 0 18px; color: var(--text-muted); font-size: 14px; }
.plaque .btn { width: 100%; justify-content: center; }

/* ── Inscription ─────────────────────────────────────────────────────────── */
.join {
  border: 1px solid var(--border); border-radius: var(--radius);
  background:
    radial-gradient(90% 120% at 20% 0%, var(--gold-dim), transparent 60%),
    var(--bg-elev);
  padding: clamp(32px, 5vw, 60px);
  display: grid; gap: 38px; align-items: center;
  grid-template-columns: 1.4fr auto;
}
.join h2 { margin-top: 0; }
.join .qr { margin: 0; }
.join-qr { text-align: center; }
.join-qr span {
  display: block; margin-top: 10px; font-size: 12px; color: var(--text-muted);
  letter-spacing: .1em; text-transform: uppercase;
}
@media (max-width: 800px) { .join { grid-template-columns: 1fr; } }

/* ── Garde-fous ──────────────────────────────────────────────────────────── */
.guards { display: grid; gap: 14px; margin-top: 40px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.guard {
  border-left: 2px solid var(--gold-deep); padding: 4px 0 4px 16px;
  font-size: 15px; color: var(--text-soft);
}
.guard b { display: block; color: var(--text); font-weight: 600; }

/* ── FAQ ─────────────────────────────────────────────────────────────────── */
details {
  border-bottom: 1px solid var(--border-soft); padding: 18px 0;
}
details summary {
  cursor: pointer; font-family: var(--font-display); font-size: 1.08rem;
  list-style: none; display: flex; justify-content: space-between; gap: 16px;
}
details summary::-webkit-details-marker { display: none; }
details summary::after { content: "+"; color: var(--gold); font-size: 1.3rem; line-height: 1; }
details[open] summary::after { content: "–"; }
details p { color: var(--text-soft); margin: 12px 0 0; max-width: 72ch; }

/* ── Pied ────────────────────────────────────────────────────────────────── */
footer { padding: 54px 0 70px; border-top: 1px solid var(--border-soft); }
.foot {
  display: flex; justify-content: space-between; gap: 22px; flex-wrap: wrap;
  font-size: 14px; color: var(--text-muted);
}
.foot a { color: var(--text-soft); text-decoration: none; }
.foot a:hover { color: var(--accent); }

/* ── Entrée en scène : un seul mouvement, orchestré ──────────────────────── */
.reveal { opacity: 0; transform: translateY(14px); animation: rise .8s var(--ease, ease) forwards; }
/* Pas de révélation au défilement : deux tentatives (IntersectionObserver
   puis animation-timeline: view()) ont laissé la page VIDE hors du premier
   écran — capture pleine page et lecteurs sans scroll compris. Sur une page
   qu'on envoie à un prospect, le contenu ne dépend de rien. Le seul
   mouvement est l'entrée en scène du hero, en CSS pur. */
.reveal:nth-child(1) { animation-delay: .05s; }
.reveal:nth-child(2) { animation-delay: .16s; }
.reveal:nth-child(3) { animation-delay: .27s; }
.reveal:nth-child(4) { animation-delay: .38s; }
@keyframes rise { to { opacity: 1; transform: none; } }