:root{--navy:#0F172A;--navy-2:#1E293B;--blue:#0284C7;--cyan:#0EA5E9;--sky:#38BDF8;--emerald:#10B981;--emerald-soft:#D1FAE5;--bg:#F8FAFC;--card:#fff;--line:#E2E8F0;--text:#334155;--muted:#64748B;--warn:#B45309;--warn-bg:#FEF3C7;--bad:#B91C1C;--bad-bg:#FEE2E2;--radius:16px;--shadow:0 1px 2px rgba(15,23,42,.05),0 8px 24px rgba(15,23,42,.07)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0B1220;--card:#131C2E;--line:#243049;--text:#CBD5E1;--muted:#94A3B8;--emerald-soft:#064E3B;--warn-bg:#422006;--bad-bg:#450A0A}}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--blue)}h1,h2,h3{color:var(--navy);line-height:1.2;margin:0 0 .5em}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) h1,:root:not([data-theme="light"]) h2,:root:not([data-theme="light"]) h3{color:#F1F5F9}}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
header.top{background:var(--navy);color:#fff}header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
header.top a{color:#fff;text-decoration:none}.logo{display:flex;align-items:center;gap:10px;font-weight:700}
nav a{margin-left:20px;font-size:.95rem;opacity:.9}nav a:hover{opacity:1}
.hero{background:linear-gradient(160deg,var(--navy),var(--navy-2) 60%,#0B3A5B);color:#E2E8F0;padding:72px 0 80px}
.hero h1{color:#fff;font-size:clamp(1.9rem,4.5vw,3rem);max-width:18ch}.hero p{max-width:60ch;font-size:1.1rem}
.btn{display:inline-block;background:var(--blue);color:#fff;border:0;border-radius:12px;padding:13px 22px;font-size:1rem;font-weight:600;cursor:pointer;text-decoration:none}
.btn:hover{background:var(--cyan)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.alt{background:transparent;border:1.5px solid var(--sky);color:var(--sky)}
section{padding:56px 0}section.alt{background:var(--card)}
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.card h3{font-size:1.1rem}.num{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--blue);color:#fff;font-weight:700;margin-bottom:10px}
.prix{font-size:2rem;font-weight:800;color:var(--navy)}@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .prix{color:#F1F5F9}}
.muted{color:var(--muted);font-size:.92rem}
.avis{border-left:4px solid var(--warn);background:var(--warn-bg);padding:14px 16px;border-radius:8px;color:var(--text)}
.ok{border-left:4px solid var(--emerald);background:var(--emerald-soft);padding:14px 16px;border-radius:8px}
.mal{border-left:4px solid var(--bad);background:var(--bad-bg);padding:14px 16px;border-radius:8px}
ul.coches{list-style:none;padding:0}ul.coches li{padding-left:26px;position:relative;margin:.4em 0}ul.coches li:before{content:"✓";position:absolute;left:0;color:var(--emerald);font-weight:700}
footer{background:var(--navy);color:#CBD5E1;padding:36px 0;font-size:.92rem}footer a{color:#93C5FD}
form .champ{margin-bottom:16px}label{display:block;font-weight:600;margin-bottom:4px;color:var(--navy)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) label{color:#E2E8F0}}
input[type=text],input[type=email],input[type=number],input[type=date],select{width:100%;padding:11px 12px;border:1.5px solid var(--line);border-radius:10px;font-size:1rem;background:var(--card);color:var(--text)}
input:focus,select:focus,.zone:focus-within{outline:2px solid var(--cyan);outline-offset:1px}
.deux{display:grid;gap:16px;grid-template-columns:1fr 1fr}@media (max-width:600px){.deux{grid-template-columns:1fr}nav a{margin-left:12px}}
.zone{border:2px dashed var(--line);border-radius:var(--radius);padding:22px;text-align:center;background:var(--card);transition:border-color .15s,background .15s}
.zone.sur{border-color:var(--cyan);background:var(--emerald-soft)}.zone h3{margin-bottom:4px}.zone input[type=file]{display:none}
.liste{list-style:none;padding:0;margin:12px 0 0;text-align:left;font-size:.9rem}.liste li{display:flex;justify-content:space-between;gap:8px;padding:4px 0;border-top:1px solid var(--line)}
.barre{height:8px;background:var(--line);border-radius:4px;overflow:hidden;margin-top:6px}.barre i{display:block;height:100%;background:var(--emerald);width:0}
.etapes{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 24px;padding:0;list-style:none}.etapes li{padding:6px 12px;border-radius:20px;background:var(--line);font-size:.9rem}.etapes li.on{background:var(--blue);color:#fff}.etapes li.fait{background:var(--emerald-soft);color:var(--navy)}
.cle{font-family:ui-monospace,Consolas,monospace;word-break:break-all;background:var(--navy);color:#A7F3D0;padding:12px;border-radius:10px;user-select:all}
table{border-collapse:collapse;width:100%}td,th{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left}
.sr{position:absolute;left:-9999px}
@media (prefers-reduced-motion:reduce){*{transition:none!important}html{scroll-behavior:auto}}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .etapes li.fait{color:#A7F3D0}}

/* Logo interactif (prototype) */
.logo{display:flex;align-items:center;gap:11px}
.logo svg{width:42px;height:42px;flex:none;overflow:visible;transition:filter .3s}
.logo{cursor:pointer;-webkit-tap-highlight-color:transparent}
.logo:hover svg,.logo:focus-visible svg{filter:drop-shadow(0 0 9px rgba(56,189,248,.7))}
.logo:focus-visible{outline:2px solid var(--sky);outline-offset:4px;border-radius:12px}
.logo .lg-hex,.logo .lg-arrow{transform-box:fill-box;transform-origin:center}
.logo .lg-hex{transition:transform .45s cubic-bezier(.3,1.6,.5,1)}
.logo:hover .lg-hex,.logo:focus-visible .lg-hex{transform:scale(1.07)}
.logo .lg-n{stroke-dasharray:100}
.logo.play .lg-n{animation:lgdraw .75s ease-out}
.logo.play .lg-arrow{animation:lgpop .55s cubic-bezier(.3,1.6,.5,1) .6s backwards}
.logo.spin .lg-hex{animation:lgspin .8s cubic-bezier(.4,0,.2,1)}
.logo:hover .logo-text b{color:var(--sky)}
.logo-text b{transition:color .25s}
@keyframes lgdraw{from{stroke-dashoffset:100}to{stroke-dashoffset:0}}
@keyframes lgpop{0%{opacity:0;transform:translateY(9px) scale(.6)}100%{opacity:1;transform:none}}
@keyframes lgspin{to{transform:rotate(360deg)}}
.logo-text{display:flex;flex-direction:column;line-height:1.05}
.logo-text b{font-size:1.28rem;color:#fff;letter-spacing:-.02em}
.logo-text small{font-size:.58rem;letter-spacing:.17em;text-transform:uppercase;color:var(--sky);font-weight:600;margin-top:3px}

header.top .logo{gap:11px}
/* Haut de page : dégradés, grille et fond « circuit » animé (prototype) */
.hero{background:radial-gradient(900px 500px at 85% 0%,rgba(14,165,233,.28),transparent 60%),radial-gradient(700px 500px at 0% 100%,rgba(99,102,241,.22),transparent 60%),var(--navy);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(ellipse at 50% 30%,#000 20%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse at 50% 30%,#000 20%,transparent 75%)}
#circuit{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:0;mask-image:radial-gradient(ellipse at 50% 30%,#000 25%,transparent 80%);-webkit-mask-image:radial-gradient(ellipse at 50% 30%,#000 25%,transparent 80%)}

.hero .wrap{position:relative;z-index:1}
/* Logo agrandi (×2,5 : 42 px → 105 px) */
header.top .wrap{height:auto;min-height:124px;padding-top:10px;padding-bottom:10px}
.logo svg{width:105px;height:105px}
.logo-text b{font-size:2.2rem}
.logo-text small{font-size:.8rem;margin-top:5px}
@media (max-width:600px){header.top .wrap{min-height:88px}.logo svg{width:68px;height:68px}.logo-text b{font-size:1.5rem}.logo-text small{font-size:.58rem}}