/* ============================================================
   DARIUS COMPUTER — Maquette site professionnel
   Concept : « Circuit & Cuivre » — version sombre moderne
   Typo : Oswald (display) · Inter (corps) · JetBrains Mono (tech)
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root {
  --font-display: 'Oswald', 'Arial Narrow', sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --copper:      #E08A52;
  --copper-hi:   #F2A470;
  --copper-low:  #C4682F;
  --copper-glow: rgba(224, 138, 82, .38);
  --copper-soft: rgba(224, 138, 82, .12);

  --steel: #6FA8CE;      /* accent technique, badges */
  --ok:    #63D493;

  --radius-s: 10px;
  --radius-m: 16px;
  --radius-l: 22px;

  --maxw: 1200px;
  --gutter: clamp(20px, 4vw, 48px);

  --ease: cubic-bezier(.22, .8, .28, 1);
  --ease-spring: cubic-bezier(.34, 1.4, .44, 1);

  --shadow-m: 0 18px 48px -24px rgba(0, 0, 0, .65);
  --shadow-l: 0 34px 80px -32px rgba(0, 0, 0, .75);
}

html[data-theme="dark"] {
  --bg:        #0A101C;
  --bg-2:      #0E1524;
  --card:      #111A2C;
  --card-2:    #1620344d;
  --ink:       #EDF1F8;
  --muted:     #9AA8BF;
  --faint:     #5F7089;
  --border:    rgba(148, 166, 196, .14);
  --border-hi: rgba(224, 138, 82, .45);
  --header-bg: rgba(10, 16, 28, .78);
  --input-bg:  rgba(255, 255, 255, .035);
  --hero-veil: linear-gradient(180deg, rgba(10,16,28,.55) 0%, rgba(10,16,28,.18) 42%, rgba(10,16,28,1) 100%);
  --grid-line: rgba(120, 150, 200, .05);
  --tint:      rgba(255, 255, 255, .02);
  color-scheme: dark;
}

html[data-theme="light"] {
  --bg:        #F7F8FA;
  --bg-2:      #FFFFFF;
  --card:      #FFFFFF;
  --card-2:    #F1F3F7;
  --ink:       #1E293B;
  --muted:     #5A6B82;
  --faint:     #94A3B8;
  --border:    rgba(30, 41, 59, .10);
  --border-hi: rgba(196, 104, 47, .50);
  --header-bg: rgba(247, 248, 250, .82);
  --input-bg:  rgba(15, 23, 42, .025);
  --copper:      #C4682F;
  --copper-hi:   #A9571F;
  --copper-glow: rgba(196, 104, 47, .28);
  --copper-soft: rgba(196, 104, 47, .10);
  --steel: #3D7CA8;
  --ok:    #1E9E5A;
  --hero-veil: linear-gradient(180deg, rgba(247,248,250,.62) 0%, rgba(247,248,250,.25) 42%, rgba(247,248,250,1) 100%);
  --grid-line: rgba(30, 41, 59, .045);
  --tint:      rgba(15, 23, 42, .015);
  --shadow-m: 0 18px 48px -28px rgba(30, 41, 59, .35);
  --shadow-l: 0 34px 80px -36px rgba(30, 41, 59, .4);
  color-scheme: light;
}

/* ---------- 2. Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 96px; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background-color .4s var(--ease), color .4s var(--ease);
}

::selection { background: var(--copper); color: #0A101C; }

img, svg, canvas { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
  border-radius: 4px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* Grain léger + grille technique sur toute la page */
body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image: radial-gradient(var(--grid-line) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 0%, transparent 78%);
}

.wrap {
  width: 100%; max-width: var(--maxw);
  margin-inline: auto; padding-inline: var(--gutter);
  position: relative; z-index: 1;
}

section { position: relative; }
.section-pad { padding-block: clamp(72px, 10vw, 130px); }

/* Étiquettes de section */
.eyebrow {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--copper);
  display: inline-flex; align-items: center; gap: 12px;
}
.eyebrow::before {
  content: ""; width: 34px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--copper));
}

h1, h2, h3, .display {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: .005em;
  text-wrap: balance;
}

.h2 {
  font-size: clamp(1.8rem, 4vw, 2.9rem);
  text-transform: uppercase;
  margin-top: 18px;
  letter-spacing: .01em;
}
.h2 .accent { color: var(--copper); }

.section-head { max-width: 720px; margin-bottom: clamp(40px, 6vw, 64px); }
.section-head p.lead {
  color: var(--muted); font-size: 1.06rem; margin-top: 16px; max-width: 62ch;
}

/* ---------- 3. Barre de progression + header ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0;
  background: linear-gradient(90deg, var(--copper-low), var(--copper-hi));
  z-index: 200; transition: width .1s linear;
}

.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 150;
  border-bottom: 1px solid transparent;
  transition: background .35s var(--ease), border-color .35s var(--ease), backdrop-filter .35s var(--ease);
}
.site-header.scrolled {
  background: var(--header-bg);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom-color: var(--border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; height: 74px;
}

/* Logo */
.brand { display: inline-flex; align-items: center; gap: 13px; min-width: 0; }
.brand-mark {
  width: 40px; height: 40px; flex: none;
  border-radius: 11px;
  background: linear-gradient(145deg, var(--copper), var(--copper-low));
  display: grid; place-items: center;
  box-shadow: 0 6px 18px -8px var(--copper-glow), inset 0 1px 0 rgba(255,255,255,.28);
  position: relative; overflow: hidden;
  transition: transform .35s var(--ease-spring);
}
.brand:hover .brand-mark { transform: rotate(-6deg) scale(1.05); }
.brand-mark svg { width: 22px; height: 22px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.12; }
.brand-name {
  font-family: var(--font-display); font-weight: 600; font-size: 1.06rem;
  letter-spacing: .12em; text-transform: uppercase;
}
.brand-sub {
  font-family: var(--font-mono); font-size: .62rem; letter-spacing: .18em;
  text-transform: uppercase; color: var(--faint);
}

/* Nav */
.main-nav { display: flex; align-items: center; gap: 18px; }
.main-nav a.navlink {
  font-size: .86rem; font-weight: 500; color: var(--muted);
  position: relative; padding: 6px 0;
  transition: color .25s var(--ease);
}
.main-nav a.navlink::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 1.5px; width: 0;
  background: var(--copper); transition: width .3s var(--ease);
}
.main-nav a.navlink:hover, .main-nav a.navlink.active { color: var(--ink); }
.main-nav a.navlink:hover::after, .main-nav a.navlink.active::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 12px; }

/* Bouton thème */
.theme-toggle {
  width: 40px; height: 40px; border-radius: 50%;
  border: 1px solid var(--border);
  display: grid; place-items: center;
  color: var(--muted);
  transition: color .25s, border-color .25s, transform .3s var(--ease-spring);
}
.theme-toggle:hover { color: var(--copper); border-color: var(--border-hi); transform: rotate(18deg); }
.theme-toggle svg { width: 18px; height: 18px; }
html[data-theme="dark"] .icon-sun { display: block; }
html[data-theme="dark"] .icon-moon { display: none; }
html[data-theme="light"] .icon-sun { display: none; }
html[data-theme="light"] .icon-moon { display: block; }

/* Bouton burger */
.burger {
  display: none; width: 44px; height: 44px; border-radius: 10px;
  border: 1px solid var(--border); place-items: center;
}
.burger span {
  display: block; width: 18px; height: 1.8px; background: var(--ink);
  position: relative; transition: background .2s;
}
.burger span::before, .burger span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 1.8px; background: var(--ink);
  transition: transform .3s var(--ease), top .3s var(--ease);
}
.burger span::before { top: -6px; }
.burger span::after  { top: 6px; }
.burger.open span { background: transparent; }
.burger.open span::before { top: 0; transform: rotate(45deg); }
.burger.open span::after  { top: 0; transform: rotate(-45deg); }

/* Menu mobile */
.mobile-menu {
  position: fixed; inset: 74px 0 auto 0; z-index: 140;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  padding: 18px var(--gutter) 30px;
  transform: translateY(-12px); opacity: 0; pointer-events: none;
  transition: transform .35s var(--ease), opacity .35s var(--ease);
}
.mobile-menu.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
.mobile-menu a {
  display: block; padding: 15px 4px; font-size: 1.05rem; font-weight: 500;
  border-bottom: 1px solid var(--border); color: var(--ink);
}
.mobile-menu a:last-of-type { border-bottom: none; }
.mobile-menu .btn { margin-top: 18px; width: 100%; justify-content: center; }

/* ---------- 4. Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 26px; border-radius: 12px;
  font-weight: 600; font-size: .95rem; letter-spacing: .01em;
  border: 1px solid transparent;
  transition: transform .3s var(--ease-spring), box-shadow .3s var(--ease), background .25s, color .25s, border-color .25s;
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; transition: transform .3s var(--ease); }
.btn-primary {
  background: linear-gradient(145deg, var(--copper-hi), var(--copper));
  color: #1A1206;
  box-shadow: 0 12px 30px -12px var(--copper-glow), inset 0 1px 0 rgba(255,255,255,.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 40px -14px var(--copper-glow), inset 0 1px 0 rgba(255,255,255,.35); }
.btn-primary:hover svg { transform: translateX(4px); }
.btn-ghost {
  border-color: var(--border); color: var(--ink); background: var(--tint);
}
.btn-ghost:hover { border-color: var(--border-hi); color: var(--copper); transform: translateY(-2px); }
.btn-sm { padding: 10px 20px; border-radius: 10px; font-size: .9rem; }

/* ---------- 5. Hero ---------- */
.hero {
  min-height: 100svh;
  display: grid; align-items: center;
  position: relative; overflow: hidden;
  padding-top: 96px; padding-bottom: 40px;
  isolation: isolate;
}
#circuit-canvas {
  position: absolute; inset: 0; width: 100%; height: 100%;
  z-index: -1; opacity: .9;
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: var(--hero-veil);
}

.hero-inner { max-width: 880px; }
.hero h1 {
  font-size: clamp(2.5rem, 7.4vw, 5.1rem);
  font-weight: 600; text-transform: uppercase;
  letter-spacing: .012em; line-height: 1.02;
  margin-top: 26px;
}
.hero h1 .line { display: block; overflow: hidden; }
.hero h1 .line > span { display: block; transform: translateY(110%); }
.hero h1 .copper { color: var(--copper); text-shadow: 0 0 26px var(--copper-glow); }
.hero-sub {
  margin-top: 26px; max-width: 58ch; text-wrap: pretty;
  color: var(--muted); font-size: clamp(1.02rem, 1.6vw, 1.18rem); font-weight: 400;
}
.hero-sub strong { color: var(--ink); font-weight: 600; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }

.hero-facts {
  display: flex; flex-wrap: wrap; gap: 10px 26px;
  margin-top: 46px; padding-top: 26px;
  border-top: 1px solid var(--border);
  width: fit-content; max-width: 100%;
}
.fact {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: .88rem; color: var(--muted); font-weight: 500;
}
.fact svg { width: 15px; height: 15px; color: var(--copper); flex: none; }

/* Entrée hero */
.hero .eyebrow { opacity: 0; animation: fadeUp .8s var(--ease) .15s forwards; }
.hero h1 .line > span { animation: riseUp .9s var(--ease) forwards; }
.hero h1 .line:nth-child(1) > span { animation-delay: .28s; }
.hero h1 .line:nth-child(2) > span { animation-delay: .40s; }
.hero-sub { opacity: 0; animation: fadeUp .8s var(--ease) .62s forwards; }
.hero-cta { opacity: 0; animation: fadeUp .8s var(--ease) .76s forwards; }
.hero-facts { opacity: 0; animation: fadeUp .8s var(--ease) .9s forwards; }

@keyframes riseUp { to { transform: translateY(0); } }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Indice de scroll */
.scroll-hint {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--muted); font-family: var(--font-mono); font-size: .62rem;
  letter-spacing: .22em; text-transform: uppercase;
  opacity: 0; animation: fadeUp 1s var(--ease) 1.4s forwards;
}
.scroll-hint .rail {
  width: 1px; height: 42px; background: var(--border); position: relative; overflow: hidden;
}
.scroll-hint .rail::after {
  content: ""; position: absolute; left: 0; top: -40%; width: 100%; height: 40%;
  background: var(--copper); animation: railFall 2.2s var(--ease) infinite;
}
@keyframes railFall { 0% { top: -40%; } 60%, 100% { top: 110%; } }

/* ---------- 6. Marquee ---------- */
.marquee {
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  overflow: hidden; padding-block: 20px;
  background: var(--tint);
  position: relative;
}
.marquee::before, .marquee::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 120px; z-index: 2; pointer-events: none;
}
.marquee::before { left: 0;  background: linear-gradient(90deg, var(--bg), transparent); }
.marquee::after  { right: 0; background: linear-gradient(-90deg, var(--bg), transparent); }
.marquee-track {
  display: flex; gap: 0; width: max-content;
  animation: marquee 38s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-seq { display: flex; align-items: center; }
.marquee-seq span {
  font-family: var(--font-display); font-weight: 500;
  font-size: .86rem; letter-spacing: .22em; text-transform: uppercase;
  color: var(--faint); padding-inline: 26px; white-space: nowrap;
}
.marquee-seq i {
  width: 5px; height: 5px; border-radius: 1px; flex: none;
  background: var(--copper); transform: rotate(45deg); opacity: .7;
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 7. Reveal au scroll ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .1s; }
.reveal[data-delay="2"] { transition-delay: .2s; }
.reveal[data-delay="3"] { transition-delay: .3s; }
.reveal[data-delay="4"] { transition-delay: .4s; }
.reveal[data-delay="5"] { transition-delay: .5s; }

/* ---------- 8. Services ---------- */
.services-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.service-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  padding: 30px 28px 28px;
  display: flex; flex-direction: column;
  transition: transform .45s var(--ease), border-color .45s var(--ease), box-shadow .45s var(--ease);
  overflow: hidden;
}
.service-card::before {
  /* piste de circuit qui se dessine au survol */
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--copper), var(--copper-hi) 60%, transparent);
  transform: scaleX(0); transform-origin: left;
  transition: transform .6s var(--ease);
}
.service-card:hover { transform: translateY(-6px); border-color: var(--border-hi); box-shadow: var(--shadow-m); }
.service-card:hover::before { transform: scaleX(1); }

.service-top { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 22px; }
.service-ico {
  width: 52px; height: 52px; border-radius: 14px;
  background: var(--copper-soft);
  border: 1px solid rgba(224, 138, 82, .22);
  display: grid; place-items: center; color: var(--copper);
  transition: background .4s var(--ease), transform .4s var(--ease-spring), color .3s;
}
.service-card:hover .service-ico { background: var(--copper); color: #1A1206; transform: scale(1.06) rotate(-4deg); }
.service-ico svg { width: 26px; height: 26px; }
.service-num {
  font-family: var(--font-mono); font-size: .8rem; color: var(--faint);
  letter-spacing: .1em;
}
.service-card h3 {
  font-size: 1.35rem; text-transform: uppercase; letter-spacing: .03em; margin-bottom: 6px;
}
.service-tag { font-size: .88rem; color: var(--copper); font-weight: 500; margin-bottom: 20px; min-height: 3.22em; }
.service-list { list-style: none; display: grid; gap: 11px; margin-bottom: 26px; }
.service-list li {
  position: relative; padding-left: 22px;
  font-size: .93rem; color: var(--muted); line-height: 1.45;
}
.service-list li::before {
  content: ""; position: absolute; left: 2px; top: .55em;
  width: 8px; height: 1.5px; background: var(--copper);
}
.service-stack {
  margin-top: auto; padding-top: 18px; border-top: 1px dashed var(--border);
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em;
  color: var(--faint); text-transform: uppercase;
}

/* ---------- 9. Section IA ---------- */
.ia-wrap { background: var(--bg-2); border-block: 1px solid var(--border); }
.ia-grid {
  display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  gap: clamp(36px, 5vw, 72px); align-items: center;
}
.ia-copy .h2 { margin-bottom: 0; }
.ia-points { display: grid; gap: 0; margin-top: 34px; }
.ia-point {
  display: grid; grid-template-columns: 40px 1fr; gap: 16px;
  padding-block: 19px; border-top: 1px solid var(--border);
}
.ia-point:last-child { border-bottom: 1px solid var(--border); }
.ia-point .p-ico {
  width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center;
  background: var(--copper-soft); color: var(--copper); border: 1px solid rgba(224,138,82,.2);
}
.ia-point .p-ico svg { width: 19px; height: 19px; }
.ia-point h4 { font-size: .98rem; font-weight: 600; margin-bottom: 3px; }
.ia-point p { font-size: .89rem; color: var(--muted); line-height: 1.5; }

/* Panneau démo */
.demo {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-l);
  overflow: hidden;
}
.demo-head {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 15px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--tint);
}
.demo-title {
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--faint); display: flex; align-items: center; gap: 10px;
}
.demo-title .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 10px rgba(99,212,147,.8); animation: pulse 2.4s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }
.demo-replay {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-mono); font-size: .72rem; color: var(--muted);
  padding: 6px 12px; border: 1px solid var(--border); border-radius: 8px;
  transition: color .25s, border-color .25s;
}
.demo-replay:hover { color: var(--copper); border-color: var(--border-hi); }
.demo-replay svg { width: 13px; height: 13px; transition: transform .5s var(--ease); }
.demo-replay.spin svg { transform: rotate(-360deg); }

.demo-tabs { display: flex; gap: 6px; padding: 14px 20px 0; }
.demo-tab {
  font-size: .84rem; font-weight: 500; color: var(--muted);
  padding: 9px 14px; border-radius: 9px; border: 1px solid transparent;
  transition: color .25s, background .25s, border-color .25s;
}
.demo-tab:hover { color: var(--ink); }
.demo-tab.active { color: var(--copper); background: var(--copper-soft); border-color: rgba(224,138,82,.25); }

.demo-body { padding: 20px 22px 24px; min-height: 296px; }
.demo-step {
  display: grid; grid-template-columns: 26px 1fr; gap: 14px;
  padding: 13px 0; border-bottom: 1px dashed var(--border);
  opacity: 0; transform: translateY(10px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}
.demo-step:last-child { border-bottom: none; }
.demo-step.on { opacity: 1; transform: none; }
.demo-step .st-ico {
  width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center;
  border: 1px solid var(--border); color: var(--faint);
  transition: color .4s, border-color .4s, background .4s;
}
.demo-step .st-ico svg { width: 13px; height: 13px; }
.demo-step.on .st-ico { color: var(--ok); border-color: rgba(99,212,147,.4); background: rgba(99,212,147,.08); }
.demo-step .st-txt { font-size: .92rem; color: var(--muted); line-height: 1.5; padding-top: 2px; }
.demo-step .st-txt b { color: var(--ink); font-weight: 600; }
.demo-step .st-meta {
  display: block; font-family: var(--font-mono); font-size: .7rem;
  letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-top: 3px;
}
.demo-foot {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 22px; border-top: 1px solid var(--border);
  background: var(--tint);
  font-size: .8rem; color: var(--muted);
}
.demo-foot svg { width: 14px; height: 14px; color: var(--copper); flex: none; }
.demo-foot b { color: var(--ink); font-weight: 500; }

/* ---------- 10. Méthode ---------- */
.method-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(36px, 5vw, 80px); align-items: start; }
.steps { display: grid; gap: 0; position: relative; }
.step {
  display: grid; grid-template-columns: 74px 1fr; gap: 22px;
  padding: 30px 0; border-bottom: 1px solid var(--border);
  position: relative;
}
.step:first-child { border-top: 1px solid var(--border); }
.step-num {
  font-family: var(--font-display); font-weight: 600; font-size: 2.1rem;
  color: transparent; -webkit-text-stroke: 1px var(--faint);
  line-height: 1; padding-top: 3px;
  transition: color .4s var(--ease), -webkit-text-stroke-color .4s var(--ease);
}
.step:hover .step-num { color: var(--copper); -webkit-text-stroke-color: var(--copper); }
.step h3 { font-size: 1.16rem; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 7px; }
.step p { color: var(--muted); font-size: .95rem; max-width: 58ch; }
.method-aside { position: sticky; top: 110px; }
.method-aside .panel {
  border: 1px solid var(--border); border-radius: var(--radius-l);
  background: var(--card); padding: 28px;
}
.method-aside h3 { font-size: 1.05rem; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 18px; }
.method-aside ul { list-style: none; display: grid; gap: 13px; }
.method-aside li { display: flex; gap: 11px; font-size: .92rem; color: var(--muted); align-items: flex-start; }
.method-aside li svg { width: 16px; height: 16px; color: var(--copper); flex: none; margin-top: 3px; }
.method-aside .mini-note {
  margin-top: 20px; padding-top: 18px; border-top: 1px dashed var(--border);
  font-size: .85rem; color: var(--faint);
}
.method-aside .mini-note b { color: var(--muted); }
.method-aside .btn { margin-top: 20px; width: 100%; justify-content: center; }

/* ---------- 11. Réalisations ---------- */
.projects { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.project {
  position: relative; overflow: hidden;
  border: 1px solid var(--border); border-radius: var(--radius-l);
  background: var(--card);
  padding: 30px 30px 26px;
  display: flex; flex-direction: column; gap: 4px;
  transition: transform .45s var(--ease), border-color .45s var(--ease), box-shadow .45s var(--ease);
}
.project:hover { transform: translateY(-6px); border-color: var(--border-hi); box-shadow: var(--shadow-m); }
.project-head { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; margin-bottom: 8px; }
.project h3 { font-size: 1.5rem; text-transform: uppercase; letter-spacing: .03em; }
.project .year { font-family: var(--font-mono); font-size: .74rem; color: var(--faint); letter-spacing: .1em; }
.project .sector { color: var(--copper); font-weight: 500; font-size: .9rem; margin-bottom: 14px; }
.project p.desc { color: var(--muted); font-size: .95rem; margin-bottom: 20px; }
.project ul { list-style: none; display: grid; gap: 10px; margin-bottom: 22px; }
.project ul li { position: relative; padding-left: 20px; font-size: .91rem; color: var(--muted); }
.project ul li::before { content: ""; position: absolute; left: 2px; top: .55em; width: 8px; height: 1.5px; background: var(--steel); }
.project .tags { margin-top: auto; display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-family: var(--font-mono); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--steel); background: rgba(111,168,206,.09);
  border: 1px solid rgba(111,168,206,.22);
  padding: 5px 10px; border-radius: 7px;
}
.clients-strip {
  margin-top: 34px; padding-top: 26px; border-top: 1px solid var(--border);
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 34px;
}
.clients-strip .lbl { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--faint); }
.clients-strip .names { display: flex; flex-wrap: wrap; gap: 12px 34px; }
.clients-strip .names span {
  font-family: var(--font-display); font-weight: 500; font-size: .95rem;
  letter-spacing: .14em; text-transform: uppercase; color: var(--muted);
  transition: color .3s;
}
.clients-strip .names span:hover { color: var(--copper); }

/* ---------- 12. Témoignages ---------- */
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.quote {
  border: 1px solid var(--border); border-radius: var(--radius-l);
  background: var(--card); padding: 30px 28px 26px;
  display: flex; flex-direction: column; gap: 20px;
  transition: transform .45s var(--ease), border-color .45s var(--ease);
}
.quote:hover { transform: translateY(-4px); border-color: var(--border-hi); }
.quote .mark {
  font-family: var(--font-display); font-size: 2.6rem; line-height: .6;
  color: var(--copper); opacity: .85; height: 20px;
}
.quote p { color: var(--ink); font-size: .98rem; line-height: 1.62; }
.quote footer { margin-top: auto; font-size: .86rem; color: var(--faint); }
.quote footer b { display: block; color: var(--muted); font-weight: 600; font-size: .9rem; margin-bottom: 2px; }

/* ---------- 13. FAQ ---------- */
.faq { max-width: 860px; margin-inline: auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-q {
  width: 100%; text-align: left;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 22px 4px;
  font-family: var(--font-display); font-weight: 500; font-size: 1.08rem;
  letter-spacing: .04em; text-transform: uppercase; color: var(--ink);
  transition: color .3s;
}
.faq-q:hover { color: var(--copper); }
.faq-q .chev {
  flex: none; width: 30px; height: 30px; border-radius: 50%;
  border: 1px solid var(--border); display: grid; place-items: center;
  transition: transform .4s var(--ease), border-color .3s, background .3s;
}
.faq-q .chev svg { width: 14px; height: 14px; color: var(--muted); }
.faq-item.open .faq-q { color: var(--copper); }
.faq-item.open .chev { transform: rotate(180deg); border-color: var(--border-hi); background: var(--copper-soft); }
.faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height .5s var(--ease);
}
.faq-a p { padding: 0 46px 24px 4px; color: var(--muted); font-size: .95rem; max-width: 72ch; }

/* ---------- 14. Contact ---------- */
.contact-wrap { background: var(--bg-2); border-top: 1px solid var(--border); }
.contact-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(36px, 5vw, 76px); align-items: start; }

.contact-direct { display: grid; gap: 14px; margin-top: 30px; }
.co-row {
  display: grid; grid-template-columns: 46px 1fr; gap: 15px; align-items: center;
  padding: 16px 18px; border: 1px solid var(--border); border-radius: var(--radius-m);
  background: var(--card);
  transition: border-color .3s, transform .3s var(--ease);
}
.co-row:hover { border-color: var(--border-hi); transform: translateX(4px); }
.co-ico {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--copper-soft); color: var(--copper); border: 1px solid rgba(224,138,82,.22);
}
.co-ico svg { width: 20px; height: 20px; }
.co-row .k { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: var(--faint); margin-bottom: 2px; }
.co-row .v { font-weight: 600; font-size: 1rem; color: var(--ink); }
.co-row .v small { display: block; font-weight: 400; font-size: .82rem; color: var(--muted); margin-top: 2px; }

.contact-form {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-l); padding: clamp(24px, 3.4vw, 38px);
  box-shadow: var(--shadow-m);
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: grid; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: .84rem; font-weight: 600; color: var(--muted); }
.field label .opt { color: var(--faint); font-weight: 400; }
.field input, .field select, .field textarea {
  width: 100%; background: var(--input-bg);
  border: 1px solid var(--border); border-radius: 11px;
  padding: 13px 15px; color: var(--ink); font-size: .95rem;
  transition: border-color .25s, background .25s, box-shadow .25s;
  appearance: none; -webkit-appearance: none;
}
.field textarea { resize: vertical; min-height: 118px; }
.field select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239AA8BF' stroke-width='2'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat: no-repeat; background-position: right 15px center;
  padding-right: 40px; cursor: pointer;
}
.field input::placeholder, .field textarea::placeholder { color: var(--muted); opacity: .72; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--copper);
  box-shadow: 0 0 0 3px var(--copper-soft);
}
.consent {
  grid-column: 1 / -1; display: flex; gap: 11px; align-items: flex-start;
  font-size: .82rem; color: var(--muted); line-height: 1.5;
}
.consent input { width: 17px; height: 17px; flex: none; margin-top: 2px; accent-color: var(--copper); }
.consent a { color: var(--copper); text-decoration: underline; text-underline-offset: 2px; }
.form-actions { grid-column: 1 / -1; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 6px; }
.form-actions .hint { font-size: .8rem; color: var(--faint); }
.form-success {
  display: none; align-items: flex-start; gap: 12px;
  margin-top: 18px; padding: 16px 18px; border-radius: var(--radius-m);
  border: 1px solid rgba(99,212,147,.36); background: rgba(99,212,147,.08);
  font-size: .9rem; color: var(--ink);
}
.form-success.show { display: flex; animation: fadeUp .5s var(--ease); }
.form-success svg { width: 18px; height: 18px; color: var(--ok); flex: none; margin-top: 1px; }
.form-success small { display: block; color: var(--muted); margin-top: 3px; }
.form-error {
  display: flex; align-items: flex-start; gap: 12px;
  margin-top: 18px; padding: 16px 18px; border-radius: var(--radius-m);
  border: 1px solid rgba(239, 68, 68, .4); background: rgba(239, 68, 68, .08);
  font-size: .9rem; color: var(--ink);
}
.form-error svg { width: 18px; height: 18px; color: #F87171; flex: none; margin-top: 1px; }
.hp-field { position: absolute !important; left: -9999px !important; top: 0; width: 1px; height: 1px; opacity: 0; overflow: hidden; }

/* ---------- 15. Footer ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--bg); padding-top: 64px; }
.footer-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px;
  padding-bottom: 48px;
}
.footer-brand p { color: var(--muted); font-size: .9rem; margin-top: 16px; max-width: 34ch; }
.footer-col h4 {
  font-family: var(--font-mono); font-size: .7rem; letter-spacing: .2em;
  text-transform: uppercase; color: var(--faint); margin-bottom: 16px; font-weight: 500;
}
.footer-col ul { list-style: none; display: grid; gap: 10px; }
.footer-col a { color: var(--muted); font-size: .9rem; transition: color .25s; }
.footer-col a:hover { color: var(--copper); }
.footer-col .v-line { color: var(--muted); font-size: .88rem; line-height: 1.7; }
.footer-col .v-line a { color: var(--ink); display: inline-block; padding: 4px 0; }
.footer-legal {
  border-top: 1px solid var(--border); padding-block: 22px;
  display: flex; flex-wrap: wrap; gap: 10px 30px; justify-content: space-between; align-items: center;
  font-size: .76rem; color: var(--faint); line-height: 1.6;
}
.footer-legal .sep { opacity: .5; }
.footer-legal a { color: var(--faint); text-decoration: underline; text-underline-offset: 2px; }
.footer-legal a:hover { color: var(--copper); }

/* Retour en haut */
.to-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 120;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--card); border: 1px solid var(--border);
  display: grid; place-items: center; color: var(--muted);
  opacity: 0; pointer-events: none; transform: translateY(10px);
  transition: opacity .35s var(--ease), transform .35s var(--ease), color .25s, border-color .25s;
  box-shadow: var(--shadow-m);
}
.to-top.show { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { color: var(--copper); border-color: var(--border-hi); }
.to-top svg { width: 18px; height: 18px; }

/* ---------- 16. Responsive ---------- */
@media (max-width: 1080px) {
  .services-grid { grid-template-columns: 1fr 1fr; }
  .services-grid .service-card:nth-child(3) { grid-column: 1 / -1; }
  .ia-grid { grid-template-columns: 1fr; }
  .ia-copy { order: 1; } .demo { order: 2; }
  .method-grid { grid-template-columns: 1fr; }
  .method-aside { position: static; }
  .quotes { grid-template-columns: 1fr 1fr; }
  .quotes .quote:nth-child(3) { grid-column: 1 / -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 1180px) {
  .main-nav { display: none; }
  .burger { display: grid; }
  .header-actions .btn { display: none; }
}

@media (max-width: 860px) {
  .projects { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .demo-tabs { flex-wrap: wrap; }
}

@media (max-width: 640px) {
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { justify-content: center; }
  .services-grid { grid-template-columns: 1fr; }
  .services-grid .service-card:nth-child(3) { grid-column: auto; }
  .quotes { grid-template-columns: 1fr; }
  .quotes .quote:nth-child(3) { grid-column: auto; }
  .form-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 110px; }
  .hero-facts { gap: 10px 18px; }
  .step { grid-template-columns: 48px 1fr; gap: 14px; }
  .step-num { font-size: 1.6rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-legal { flex-direction: column; align-items: flex-start; }
  .scroll-hint { display: none; }
}

/* ---------- 17. Accessibilité : mouvement réduit ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001s !important; animation-iteration-count: 1 !important; transition-duration: .001s !important; }
  .hero .eyebrow, .hero-sub, .hero-cta, .hero-facts, .scroll-hint { opacity: 1; animation: none; }
  .hero h1 .line > span { transform: none; animation: none; }
  .reveal { opacity: 1; transform: none; }
  .marquee-track { animation: none; }
  .scroll-hint .rail::after { animation: none; }
}

/* ---------- 18. Journal ---------- */
.journal-list { border-top: 1px solid var(--border); }
.journal-row {
  display: grid; grid-template-columns: 210px 1fr 44px;
  gap: clamp(16px, 3vw, 40px); align-items: center;
  padding: 26px 6px; border-bottom: 1px solid var(--border);
  transition: background .3s var(--ease);
}
.journal-row:hover { background: var(--tint); }
.journal-meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px;
  font-family: var(--font-mono); font-size: .68rem; letter-spacing: .13em;
  text-transform: uppercase; color: var(--faint);
}
.journal-meta .cat { color: var(--copper); }
.journal-meta .dot-sep { opacity: .5; }
.journal-row h3 {
  font-size: 1.2rem; font-weight: 500; letter-spacing: .008em; text-transform: none;
  transition: color .3s var(--ease);
}
.journal-row:hover h3 { color: var(--copper); }
.journal-arrow {
  width: 40px; height: 40px; border-radius: 50%; justify-self: end;
  border: 1px solid var(--border); display: grid; place-items: center;
  color: var(--muted); transition: border-color .3s, color .3s, transform .3s var(--ease);
}
.journal-arrow svg { width: 16px; height: 16px; }
.journal-row:hover .journal-arrow { border-color: var(--border-hi); color: var(--copper); transform: translateX(4px); }
@media (max-width: 640px) {
  .journal-row { grid-template-columns: 1fr 40px; gap: 10px 16px; }
  .journal-meta { grid-column: 1 / -1; }
}

/* ---------- Téléchargement RustDesk (télémaintenance) ---------- */
.dl-tool {
  margin-top: 16px;
  padding: 14px 16px;
  display: grid;
  gap: 10px;
  border: 1px dashed rgba(224, 138, 82, .4);
  border-radius: var(--radius-s);
  background: var(--copper-soft);
}
.dl-title { display: flex; align-items: center; gap: 9px; font-weight: 600; font-size: .92rem; }
.dl-title svg { width: 18px; height: 18px; color: var(--copper); flex: none; }
.dl-title em { font-style: normal; font-weight: 400; font-size: .78rem; color: var(--muted); }
.dl-btns { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.dl-btns .btn { width: 100%; justify-content: center; }
.dl-btns .btn:first-child { grid-column: 1 / -1; }
@media (max-width: 480px) { .dl-btns { grid-template-columns: 1fr; } }
.dl-note { font-size: .78rem; color: var(--muted); line-height: 1.65; }