:root{--ink:#14122b;--muted:#5d5b78;--bg:#f6f5fc;--card:#fff;--line:#e2e0f0;--primary:#4c35e0;--on-primary:#fff;--link:#4c35e0;--accent:#ff7a6b;--soft:#ece9ff;--ok:#0b7a58;--ok-bg:#d9f5ea;--danger:#b3261e;--on-danger:#fff;--head:#130f33;--on-head:#fff;--shadow:0 1px 2px rgba(20,18,43,.06),0 10px 28px rgba(76,53,224,.10);color-scheme:light;box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]){--ink:#ece9ff;--muted:#a9a5cc;--bg:#0e0b22;--card:#181436;--line:#2c2757;--primary:#a99bff;--on-primary:#120d33;--link:#b5a9ff;--accent:#ff7a6b;--soft:#261f57;--ok:#6fe0b4;--ok-bg:#12382d;--danger:#ff8a80;--on-danger:#1a0b0a;--head:#0a0818;--on-head:#ece9ff;--shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35);color-scheme:dark}}
:root[data-theme="dark"]{--ink:#ece9ff;--muted:#a9a5cc;--bg:#0e0b22;--card:#181436;--line:#2c2757;--primary:#a99bff;--on-primary:#120d33;--link:#b5a9ff;--accent:#ff7a6b;--soft:#261f57;--ok:#6fe0b4;--ok-bg:#12382d;--danger:#ff8a80;--on-danger:#1a0b0a;--head:#0a0818;--on-head:#ece9ff;--shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35);color-scheme:dark}
html{scroll-padding-top:env(safe-area-inset-top,0px)}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;display:flex;flex-direction:column;font:16px/1.6 "Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",sans-serif;color:var(--ink);background:var(--bg);-webkit-text-size-adjust:100%}
a{color:var(--link)}
header{display:flex;flex-wrap:wrap;align-items:center;gap:.1rem 1rem;padding:.35rem max(1rem,calc((100% - 1040px)/2));background:var(--head);color:var(--on-head)}
.brand{display:inline-flex;align-items:center;gap:.6rem;font-weight:800;font-size:1.3rem;letter-spacing:-.02em;color:var(--on-head);text-decoration:none;padding:.4rem 0}
.brand img{width:34px;height:34px;display:block}
nav{display:flex;flex-wrap:wrap;align-items:center;gap:0 .2rem;margin-left:auto}
nav a,header .link{color:var(--on-head);text-decoration:none;padding:.5rem .7rem;min-height:44px;display:inline-flex;align-items:center;border-radius:8px;font-weight:500}
nav a:hover,header .link:hover{background:rgba(255,255,255,.1)}
nav a.cta{background:var(--accent);color:#26101f;font-weight:700;margin-left:.3rem}
nav a.cta:hover{background:#ff9a8d}
main{width:100%;max-width:820px;margin:1.5rem auto 2rem;padding:0 1rem;flex:1}
main.wide{max-width:none;margin:0;padding:0}
h1{font-size:1.75rem;line-height:1.2;letter-spacing:-.02em;margin:.2rem 0 1rem}h2{font-size:1.2rem;letter-spacing:-.01em}
label{display:block;margin:1.1rem 0 .3rem;font-weight:600}
input{width:100%;min-height:46px;padding:.6rem .8rem;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink);font:inherit}
input:focus{border-color:var(--primary)}
input[type=file]{padding:.55rem}
small,.mut{color:var(--muted)}
button,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:.6rem 1.3rem;border:0;border-radius:10px;background:var(--primary);color:var(--on-primary);font:inherit;font-weight:700;text-decoration:none;cursor:pointer}
.btn.big{min-height:52px;padding:.7rem 1.6rem;font-size:1.05rem}
.btn.accent{background:var(--accent);color:#26101f}
.btn.ghost{background:transparent;color:var(--link);box-shadow:inset 0 0 0 2px var(--line)}
button.link{background:none;color:var(--link);font-weight:400;text-decoration:underline;padding:.5rem .6rem;min-height:44px}
button.danger{background:var(--danger);color:var(--on-danger)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.flash,.note{background:var(--card);border-left:4px solid var(--accent);border-radius:0 10px 10px 0;padding:.75rem 1rem;margin:0 0 1rem;box-shadow:var(--shadow)}
.panel{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:1.4rem;box-shadow:var(--shadow)}
.auth{max-width:440px;margin:1rem auto}
.offer{background:var(--card);border:1px solid var(--line);border-left:5px solid var(--primary);border-radius:12px;padding:.9rem 1.1rem;margin:0 0 .75rem}
.offer h2{font-size:1.05rem;margin:0 0 .2rem;overflow-wrap:anywhere}
.row{display:flex;gap:.8rem;flex-wrap:wrap}.row>div{flex:1;min-width:140px}
.scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;background:var(--card)}td,th{border-bottom:1px solid var(--line);padding:.5rem;text-align:left}
td input{width:5rem}.narrow{width:6rem}
.check{display:flex;gap:.7rem;align-items:flex-start;font-weight:400}
.check input{width:1.4rem;min-height:0;height:1.4rem;flex:none;margin-top:.2rem}
.inline{display:inline;margin:0}
.danger-zone{margin-top:2rem;padding-top:1rem;border-top:1px solid var(--line)}.danger-zone summary{color:var(--danger);cursor:pointer;padding:.5rem 0}
.foot{padding:1.2rem 1rem;text-align:center;color:var(--muted);background:var(--card);border-top:1px solid var(--line);margin:0}
.chip{display:inline-block;padding:.15rem .7rem;border-radius:999px;font-size:.85rem;font-weight:700;background:var(--soft);color:var(--primary)}
.chip.ok{background:var(--ok-bg);color:var(--ok)}
/* page d'accueil */
.hero{background:linear-gradient(150deg,#130f33 0%,#3a22c9 55%,#8a2fe8 100%);color:#fff;padding:3rem max(1rem,calc((100% - 1040px)/2)) 3.5rem;display:grid;gap:2.5rem;align-items:center}
.hero h1{font-size:2.3rem;line-height:1.12;letter-spacing:-.03em;margin:0 0 1rem;max-width:16ch;text-wrap:balance}
.hero p{font-size:1.1rem;max-width:46ch;color:#e0dbff;margin:0 0 1.6rem}
.hero .actions{display:flex;flex-wrap:wrap;gap:.8rem}
.hero .btn.ghost{color:#fff;box-shadow:inset 0 0 0 2px rgba(255,255,255,.45)}
.stack{position:relative;max-width:420px;width:100%;justify-self:center;padding:0 0 1.4rem 0}
.stack .sheet{background:#fff;color:#14122b;border-radius:14px;padding:1rem 1.1rem;box-shadow:0 18px 40px rgba(0,0,0,.35)}
.stack .sheet.back{position:absolute;left:1.2rem;right:-1rem;top:1.2rem;bottom:0;background:#dcd6ff;transform:rotate(2.5deg);box-shadow:none;z-index:0}
.stack .sheet.front{position:relative;z-index:1}
.sheet h3{margin:.3rem 0 .1rem;font-size:1.05rem}.sheet .m{color:#5d5b78;font-size:.92rem}
.sheet .line{height:.5rem;border-radius:4px;background:#e8e5f7;margin:.55rem 0}.sheet .line.s{width:70%}
.sheet .bar{display:flex;justify-content:space-between;align-items:center;gap:.5rem;flex-wrap:wrap}
.sheet .chip{background:#ece9ff;color:#4c35e0}.sheet .chip.ok{background:#d9f5ea;color:#0b7a58}
.stack .tag{position:absolute;right:.4rem;bottom:0;z-index:2;background:var(--accent);color:#26101f;font-weight:700;font-size:.8rem;padding:.2rem .7rem;border-radius:999px}
.sec{padding:3rem max(1rem,calc((100% - 1040px)/2))}
.sec h2{font-size:1.6rem;letter-spacing:-.02em;margin:0 0 1.6rem}
.steps{list-style:none;margin:0;padding:0;display:grid;gap:1.2rem;counter-reset:s}
.steps li{counter-increment:s;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:1.2rem 1.2rem 1.2rem 4rem;position:relative;box-shadow:var(--shadow)}
.steps li::before{content:counter(s);position:absolute;left:1.1rem;top:1.1rem;width:2.1rem;height:2.1rem;border-radius:50%;background:var(--primary);color:var(--on-primary);font-weight:800;display:grid;place-items:center}
.steps b{display:block;font-size:1.05rem;margin-bottom:.15rem}
.band{background:var(--soft);padding:2.4rem max(1rem,calc((100% - 1040px)/2));display:flex;flex-wrap:wrap;gap:1rem 2rem;align-items:center;justify-content:space-between}
.band p{margin:0;font-size:1.2rem;font-weight:700;letter-spacing:-.01em;max-width:30ch}
@media(min-width:820px){.hero{grid-template-columns:1.1fr .9fr;padding-top:4.5rem;padding-bottom:5rem}.hero h1{font-size:3rem}.steps{grid-template-columns:repeat(3,1fr)}}
@media(max-width:560px){h1{font-size:1.45rem}.row>div{min-width:100%}nav{margin-left:0;width:100%}nav a,header .link{padding:.5rem .55rem}th,td{font-size:.92rem}.hero h1{font-size:2rem}}