:root {
  color-scheme: light dark;
  --ink: #0d0b1a;
  --violet: #6d28d9;
  --violet-bright: #7c3aed;
  --indigo: #4338ca;
  --violet-deep: #2e1065;
  --text: #14121f;
  --text-soft: #4b4763;
  --muted: #6b6785;
  --line: #e7e4f0;
  --bg-soft: #f7f5fc;
  --surface: #ffffff;
  --accent: #a78bfa;
  --amber: #f59e0b;
  --green: #16a34a;
  --radius: 14px;
  --maxw: 1080px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --text: #ece9f7;
    --text-soft: #b7b2cf;
    --muted: #8a85a6;
    --line: #2a2542;
    --bg-soft: #14101f;
    --surface: #1a1530;
  }
  body { background: #100c1c; }
  .topbar { background: rgba(16,12,28,.85) !important; }
  .step, .shot, .plan, .faq details { background: var(--surface) !important; }
  .feature .ico { background: #241b40 !important; }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--text); line-height: 1.6; background: #fff; }
h1, h2, h3 { line-height: 1.15; margin: 0; }
p { margin: 0; }
a { color: inherit; }
img { max-width: 100%; height: auto; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

.topbar { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.9); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.topbar .wrap { display: flex; align-items: center; gap: 14px; padding-top: 10px; padding-bottom: 10px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.1rem; text-decoration: none; }
.brand img { width: 34px; height: 34px; border-radius: 8px; }
.topnav { margin-left: auto; display: flex; align-items: center; gap: 18px; font-size: .9rem; font-weight: 600; }
.topnav a { text-decoration: none; color: var(--text-soft); white-space: nowrap; }
.topnav a:hover { color: var(--violet); }
.lang { border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; }

.btn { display: inline-flex; align-items: center; gap: 9px; border-radius: 999px; padding: 13px 26px; font-weight: 700; text-decoration: none; font-size: .95rem; }
.btn-install { background: linear-gradient(135deg, #8b5cf6, #6d28d9); color: #fff; box-shadow: 0 10px 28px rgba(109, 40, 217, .38); }
.btn-install:hover { filter: brightness(1.07); }
.btn-ghost { border: 1px solid rgba(255,255,255,.4); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.12); }
.btn-dark { background: var(--ink); color: #fff; }
@media (prefers-color-scheme: dark) { .btn-dark { background: #2a2148; } }

.hero { color: #fff; background: radial-gradient(circle at 12% 0%, rgba(167,139,250,.42), transparent 46%), radial-gradient(circle at 90% 20%, rgba(79,70,229,.35), transparent 40%), linear-gradient(150deg, #0d0b1a 0%, #2e1065 52%, #6d28d9 130%); padding: 84px 0 96px; text-align: center; }
.hero .badge { display: inline-flex; align-items: center; gap: 8px; border: 1px solid rgba(255,255,255,.22); background: rgba(255,255,255,.09); border-radius: 999px; padding: 7px 16px; font-size: .85rem; font-weight: 600; margin-bottom: 26px; }
.hero .dot { width: 8px; height: 8px; border-radius: 999px; background: #a78bfa; box-shadow: 0 0 10px #a78bfa; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight: 800; max-width: 21ch; margin: 0 auto 20px; }
.hero h1 .hl { color: var(--accent); }
.hero .sub { max-width: 64ch; margin: 0 auto 34px; color: #e5deff; font-size: 1.12rem; }
.hero .ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero .proof { margin-top: 30px; color: #cbbff5; font-size: .88rem; }

.section { padding: 72px 0; }
.section.alt { background: var(--bg-soft); }
.eyebrow { color: var(--violet); font-weight: 800; font-size: .76rem; text-transform: uppercase; letter-spacing: .16em; margin-bottom: 10px; }
@media (prefers-color-scheme: dark) { .eyebrow { color: var(--accent); } }
.section h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 12px; }
.section .lead { color: var(--text-soft); max-width: 72ch; }
.center { text-align: center; }
.center .lead { margin: 0 auto; }

.steps { display: grid; gap: 18px; margin-top: 36px; }
@media (min-width: 860px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.step { border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; background: #fff; }
.step .num { display: inline-flex; width: 34px; height: 34px; align-items: center; justify-content: center; border-radius: 999px; background: linear-gradient(135deg, #8b5cf6, #6d28d9); color: #fff; font-weight: 800; margin-bottom: 14px; }
.step h3 { font-size: 1.08rem; margin-bottom: 8px; }
.step p { color: var(--text-soft); font-size: .93rem; }

.shots { display: grid; gap: 22px; margin-top: 40px; }
@media (min-width: 760px) { .shots { grid-template-columns: repeat(2, 1fr); } }
.shot { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; box-shadow: 0 14px 34px rgba(46,16,101,.10); }
.shot img { display: block; }
.shot figcaption { padding: 14px 16px; font-size: .88rem; color: var(--text-soft); border-top: 1px solid var(--line); }

.grid2 { display: grid; gap: 20px; margin-top: 36px; }
@media (min-width: 860px) { .grid2 { grid-template-columns: 1fr 1fr; } }
.feature { display: flex; gap: 14px; align-items: flex-start; }
.feature .ico { flex: none; width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center; border-radius: 10px; background: #f0ebff; font-size: 1.2rem; }
.feature h3 { font-size: 1.02rem; margin-bottom: 4px; }
.feature p { color: var(--text-soft); font-size: .92rem; }

.risk-band { border-radius: var(--radius); padding: 40px; margin-top: 44px; color: #fff; background: linear-gradient(140deg, #1e1b4b, #4338ca); }
.risk-band h3 { font-size: 1.35rem; margin-bottom: 6px; }
.risk-band > p { color: #d6d1ff; margin-bottom: 22px; }
.risk-grid { display: grid; gap: 12px; }
@media (min-width: 760px) { .risk-grid { grid-template-columns: repeat(4, 1fr); } }
.risk { border-radius: 12px; padding: 16px; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.14); }
.risk .tag { display: inline-block; font-size: .72rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; padding: 3px 9px; border-radius: 999px; margin-bottom: 8px; }
.risk .tag.r-unacc { background: #7f1d1d; color: #fecaca; }
.risk .tag.r-high { background: #7c2d12; color: #fed7aa; }
.risk .tag.r-limited { background: #78350f; color: #fde68a; }
.risk .tag.r-min { background: #14532d; color: #bbf7d0; }
.risk h4 { font-size: .98rem; margin: 0 0 4px; }
.risk p { color: #c7c2ee; font-size: .84rem; }

.privacy-band { color: #fff; background: linear-gradient(140deg, #052e16, #14532d); border-radius: var(--radius); padding: 40px; margin-top: 40px; }
.privacy-band h3 { font-size: 1.35rem; margin-bottom: 12px; }
.privacy-band ul { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 10px; }
@media (min-width: 760px) { .privacy-band ul { grid-template-columns: 1fr 1fr; } }
.privacy-band li { display: flex; gap: 10px; color: #dcfce7; font-size: .95rem; }
.privacy-band li::before { content: "✓"; color: #4ade80; font-weight: 800; }

.plans { display: grid; gap: 20px; margin-top: 40px; }
@media (min-width: 820px) { .plans { grid-template-columns: repeat(3, 1fr); } }
.plan { border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; background: #fff; display: flex; flex-direction: column; }
.plan.pro { border: 2px solid var(--violet); box-shadow: 0 18px 44px rgba(109,40,217,.16); position: relative; }
.plan.pro::after { content: attr(data-badge); position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: linear-gradient(135deg, #8b5cf6, #6d28d9); color: #fff; font-size: .7rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; padding: 4px 14px; border-radius: 999px; white-space: nowrap; }
.plan .name { font-weight: 800; font-size: 1.05rem; }
.plan .price { font-size: 2.2rem; font-weight: 800; margin: 8px 0 2px; }
.plan .per { color: var(--muted); font-size: .85rem; }
.plan ul { list-style: none; padding: 0; margin: 18px 0 24px; display: grid; gap: 9px; color: var(--text-soft); font-size: .93rem; }
.plan li::before { content: "✓  "; color: var(--violet); font-weight: 800; }
@media (prefers-color-scheme: dark) { .plan li::before { color: var(--accent); } }
.plan .btn { margin-top: auto; justify-content: center; }

.videos { border: 2px dashed var(--line); border-radius: var(--radius); padding: 44px; text-align: center; color: var(--muted); margin-top: 36px; }
.videos h3 { color: var(--text); font-size: 1.1rem; margin-bottom: 8px; }

.faq { margin-top: 34px; display: grid; gap: 12px; }
.faq details { border: 1px solid var(--line); border-radius: 12px; background: #fff; padding: 4px 20px; }
.faq summary { cursor: pointer; font-weight: 700; padding: 14px 0; }
.faq p { color: var(--text-soft); padding-bottom: 16px; font-size: .95rem; }

.cta-final { text-align: center; color: #fff; background: linear-gradient(150deg, #0d0b1a, #2e1065 60%, #4338ca); }
.cta-final h2 { color: #fff; }
.cta-final .lead { color: #e5deff; margin: 0 auto 30px; }

footer { background: var(--ink); color: #c4bedb; padding: 40px 0; font-size: .88rem; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 14px 28px; align-items: center; }
footer a { color: #c4bedb; text-decoration: none; }
footer a:hover { color: #fff; }
footer .sep { margin-left: auto; color: #6b6785; }

/* Vidéo YouTube responsive 16:9 */
.video-embed{position:relative;width:100%;max-width:860px;margin:0 auto;aspect-ratio:16/9;border-radius:16px;overflow:hidden;box-shadow:0 24px 60px rgba(76,29,149,.28)}
.video-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}