:root {
  --bg: #f5f4ef;
  --bg-alt: #efeee8;
  --card: #ffffff;
  --card-2: #fbfbf9;
  --ink: #16181e;
  --muted: #5b6472;
  --line: #e6e5dd;
  --accent: #5a51e8;
  --accent-ink: #ffffff;
  --accent-soft: #edecfd;
  --ok: #1f9d63;
  --ok-soft: #e3f5eb;
  --wait: #b7791f;
  --wait-soft: #fbf1de;
  --radius: 18px;
  --radius-sm: 12px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, .brand { font-family: "Space Grotesk", Inter, sans-serif; letter-spacing: -.02em; }
a { color: inherit; text-decoration: none; }
em { font-style: normal; color: var(--accent); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.wrap-narrow { max-width: 760px; margin: 0 auto; padding: 0 24px; }
.center { text-align: center; }

/* ---- Nav ---- */
.nav { position: sticky; top: 0; z-index: 50; background: rgba(245,244,239,.85); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav-in { max-width: 1080px; margin: 0 auto; padding: 14px 24px; display: flex; align-items: center; gap: 24px; }
.brand { font-weight: 700; font-size: 20px; }
.brand span { color: var(--accent); }
.nav-links { display: flex; gap: 22px; margin-left: auto; font-size: 14px; }
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--ink); }
.nav .btn.pill { margin-left: 8px; }
@media (max-width: 780px) { .nav-links { display: none; } .nav .btn.pill { margin-left: auto; } }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--accent); color: var(--accent-ink); font-weight: 600; font-size: 14px;
  padding: 10px 18px; border: none; border-radius: var(--radius-sm); cursor: pointer;
  font-family: inherit; transition: transform .08s ease, filter .15s ease;
}
.btn:hover { filter: brightness(1.06); }
.btn:active { transform: translateY(1px); }
.btn.pill { border-radius: 999px; }
.btn.lg { padding: 14px 26px; font-size: 15px; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn.ghost:hover { background: var(--card); }
.btn.light { background: #fff; color: var(--accent); }

.eyebrow { display: inline-block; font-size: 13px; color: var(--accent); background: var(--accent-soft); padding: 6px 14px; border-radius: 999px; font-weight: 600; margin-bottom: 22px; }
.kicker { display: block; text-transform: uppercase; letter-spacing: .12em; font-size: 12px; font-weight: 600; color: var(--accent); margin-bottom: 12px; }

/* ---- Hero ---- */
.hero { padding: 72px 0 40px; }
.hero-in { max-width: 1080px; margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(36px, 5.4vw, 62px); line-height: 1.02; margin: 0 0 20px; font-weight: 600; }
.hero .sub { font-size: 18px; color: var(--muted); max-width: 520px; margin: 0 0 30px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px; }
.trust { display: flex; gap: 18px; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.trust span { white-space: nowrap; }
@media (max-width: 900px) { .hero-in { grid-template-columns: 1fr; gap: 36px; } .hero { padding: 44px 0 20px; } }

/* Hero mock card */
.mock-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 24px 60px -30px rgba(22,24,30,.28); overflow: hidden; }
.mock-url { background: var(--card-2); border-bottom: 1px solid var(--line); padding: 10px 16px; font-size: 12px; color: var(--muted); font-family: ui-monospace, monospace; }
.mock-body { padding: 22px; }
.mock-tag { display: inline-block; font-size: 12px; color: var(--accent); background: var(--accent-soft); padding: 3px 10px; border-radius: 999px; margin-bottom: 14px; }
.mock-body label, .pay-mock label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 12px; }
.mock-field { margin-top: 5px; background: var(--card-2); border: 1px solid var(--line); border-radius: 9px; padding: 10px 12px; font-size: 14px; color: var(--ink); }
.mock-row { display: flex; gap: 12px; }
.mock-row label { flex: 1; }
.mock-btn { background: var(--accent); color: #fff; text-align: center; padding: 12px; border-radius: 9px; font-weight: 600; font-size: 14px; margin-top: 4px; }
.mock-note { font-size: 12px; color: var(--ok); margin: 12px 0 0; }

/* ---- Bands ---- */
.band { padding: 64px 0; border-top: 1px solid var(--line); }
.band.alt { background: var(--bg-alt); }
.band h2 { font-size: clamp(26px, 3.4vw, 38px); margin: 0 0 16px; font-weight: 600; }
.lead { font-size: 17px; color: var(--muted); max-width: 640px; }
.band.split .two { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 860px) { .band.split .two { grid-template-columns: 1fr; gap: 32px; } }

/* Steps */
.steps3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 36px 0 40px; }
.step { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.step .num { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-weight: 700; margin-bottom: 14px; }
.step h3 { margin: 0 0 8px; font-size: 18px; }
.step p { margin: 0; color: var(--muted); font-size: 15px; }
@media (max-width: 780px) { .steps3 { grid-template-columns: 1fr; } }

/* Dashboard mock */
.dash-mock, .dash { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 20px 14px; }
.dash-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 0 12px; border-bottom: 1px solid var(--line); }
.pill-mini { font-size: 12px; color: var(--wait); background: var(--wait-soft); padding: 3px 10px; border-radius: 999px; }
.dash-row { display: flex; align-items: center; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.dash-row:last-child { border-bottom: none; }
.dash-row.live { cursor: pointer; }
.dash-row.live:hover { background: var(--card-2); }
.dot { width: 9px; height: 9px; border-radius: 50%; flex: 0 0 auto; }
.dot.ok { background: var(--ok); }
.dot.wait { background: var(--wait); }
.dash-name { display: flex; flex-direction: column; font-size: 14px; font-weight: 600; }
.dash-name em { font-weight: 400; font-style: normal; color: var(--muted); font-size: 12px; font-family: ui-monospace, monospace; }
.dash-amt { margin-left: auto; font-weight: 600; font-size: 15px; }

/* Feature list */
.feat { list-style: none; padding: 0; margin: 24px 0 0; }
.feat li { padding: 12px 0 12px 28px; position: relative; color: var(--muted); border-bottom: 1px solid var(--line); }
.feat li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.feat strong { color: var(--ink); }

/* Payment mock */
.pm-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: 0 24px 60px -34px rgba(22,24,30,.3); }
.pm-lock { display: inline-block; font-size: 12px; color: var(--wait); background: var(--wait-soft); padding: 4px 12px; border-radius: 999px; }
.pm-doc { font-family: ui-monospace, monospace; font-weight: 600; margin: 14px 0 2px; }
.pm-cap { color: var(--muted); font-size: 13px; margin: 0 0 14px; }
.pm-amount { font-size: 30px; font-weight: 700; margin-bottom: 16px; font-family: "Space Grotesk"; }
.pm-field { background: var(--card-2); border: 1px solid var(--line); border-radius: 9px; padding: 11px 13px; font-size: 14px; margin-bottom: 10px; font-family: ui-monospace, monospace; color: var(--muted); }
.pm-row { display: flex; gap: 10px; }
.pm-row .pm-field { flex: 1; }
.pm-note { text-align: center; color: var(--muted); font-size: 12px; margin: 12px 0 0; }

/* mini3 */
.mini3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 30px; }
.mini3 div { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 20px; font-size: 15px; color: var(--muted); }
.mini3 strong { color: var(--ink); display: block; margin-bottom: 4px; }
@media (max-width: 780px) { .mini3 { grid-template-columns: 1fr; } }

/* Security */
.sec4 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 34px; }
.sec { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.sec h3 { margin: 0 0 8px; font-size: 17px; }
.sec p { margin: 0; color: var(--muted); font-size: 15px; }
@media (max-width: 700px) { .sec4 { grid-template-columns: 1fr; } }

/* Chips */
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.chips span { background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 9px 16px; font-size: 14px; color: var(--muted); }

/* FAQ */
.faq { margin-top: 26px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 4px 20px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; padding: 14px 0; list-style: none; position: relative; }
.faq summary::after { content: "+"; position: absolute; right: 0; color: var(--accent); font-size: 20px; }
.faq details[open] summary::after { content: "−"; }
.faq p { margin: 0 0 14px; color: var(--muted); }

/* CTA band */
.cta-band { background: var(--ink); color: #fff; padding: 66px 0; text-align: center; }
.cta-band h2 { font-size: clamp(26px, 3.6vw, 40px); margin: 0 0 12px; }
.cta-band .lead { color: rgba(255,255,255,.72); margin: 0 auto 26px; }
.cta-band strong { color: #fff; }

/* ---- Footer ---- */
.site-foot { border-top: 1px solid var(--line); padding: 48px 0 0; }
.foot-in { max-width: 1080px; margin: 0 auto; padding: 0 24px 36px; display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; }
.foot-in p { color: var(--muted); font-size: 14px; max-width: 380px; margin: 12px 0 0; }
.foot-cols { display: flex; gap: 48px; }
.foot-cols h4 { margin: 0 0 12px; font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.foot-cols a, .foot-cols span { display: block; font-size: 14px; color: var(--muted); margin-bottom: 8px; }
.foot-cols a:hover { color: var(--ink); }
.foot-base { border-top: 1px solid var(--line); padding: 20px 24px; text-align: center; font-size: 13px; color: var(--muted); }
@media (max-width: 780px) { .foot-in { grid-template-columns: 1fr; gap: 28px; } }

/* ============================================================
   APP (outil fonctionnel)
   ============================================================ */
body.app { background: var(--bg-alt); }
.app-wrap { max-width: 1000px; margin: 0 auto; padding: 44px 24px 60px; }
.app-wrap.narrow { max-width: 620px; }
.app-head { margin-bottom: 28px; }
.app-head h1 { font-size: 30px; margin: 0 0 8px; }
.app-head p { color: var(--muted); margin: 0; }
.app-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 24px; align-items: start; }
@media (max-width: 820px) { .app-grid { grid-template-columns: 1fr; } }

.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.panel.center { text-align: center; }
.muted { color: var(--muted); }

.form label { display: block; margin-bottom: 16px; font-size: 13px; color: var(--muted); }
.form input {
  display: block; width: 100%; margin-top: 6px; padding: 11px 14px;
  background: var(--card-2); border: 1px solid var(--line); border-radius: 10px;
  color: var(--ink); font-size: 15px; font-family: inherit;
}
.form input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.form input[type=file] { padding: 9px; color: var(--muted); }
.form .btn { width: 100%; margin-top: 6px; }
.advanced { margin: 6px 0 18px; border-top: 1px dashed var(--line); padding-top: 14px; }
.advanced summary { cursor: pointer; color: var(--muted); font-size: 14px; }
.hint { color: var(--muted); font-size: 13px; margin: 8px 0 0; }
.empty { color: var(--muted); font-size: 14px; padding: 22px 0; text-align: center; }

.check { width: 58px; height: 58px; border-radius: 50%; margin: 0 auto 14px; background: var(--ok-soft); color: var(--ok); display: grid; place-items: center; font-size: 28px; font-weight: 700; }
.linkbox { display: flex; gap: 8px; margin: 22px 0; }
.linkbox input { flex: 1; padding: 11px 14px; background: var(--card-2); border: 1px solid var(--line); border-radius: 10px; color: var(--ink); font-size: 14px; }
.actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.client { text-align: center; }
.client h1 { margin: 14px 0 6px; font-size: 26px; }
.pill-status { display: inline-block; font-size: 12px; font-weight: 600; padding: 5px 14px; border-radius: 999px; }
.pill-status.ok { background: var(--ok-soft); color: var(--ok); }
.pill-status.wait { background: var(--wait-soft); color: var(--wait); }
.amount { font-size: 42px; font-weight: 700; margin: 6px 0 18px; font-family: "Space Grotesk"; }

/* Document preview (locked/unlocked) */
.doc-preview { position: relative; margin: 22px auto; width: 200px; height: 150px; border-radius: 12px; border: 1px solid var(--line); background: var(--card-2); overflow: hidden; display: grid; place-items: center; }
.doc-sheet { width: 130px; }
.doc-sheet span { display: block; height: 8px; background: var(--line); border-radius: 4px; margin: 9px 0; }
.doc-sheet span:nth-child(1) { width: 70%; } .doc-sheet span:nth-child(3) { width: 90%; } .doc-sheet span:nth-child(5) { width: 55%; }
.doc-preview.locked .doc-sheet { filter: blur(4px); opacity: .7; }
.doc-lock { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; font-size: 13px; color: var(--muted); background: rgba(251,251,249,.55); backdrop-filter: blur(2px); }
.doc-preview.unlocked { border-color: var(--ok); }

/* Checkout */
.checkout { max-width: 440px; margin: 0 auto; }
.ck-head { display: flex; justify-content: space-between; align-items: baseline; }
.ck-merchant { color: var(--muted); font-size: 14px; }
.ck-amount { font-size: 26px; font-weight: 700; font-family: "Space Grotesk"; }
.ck-desc { color: var(--muted); font-size: 14px; margin: 2px 0 22px; }
.ck-form label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 14px; }
.ck-form input { width: 100%; margin-top: 6px; padding: 11px 14px; background: var(--card-2); border: 1px solid var(--line); border-radius: 10px; color: var(--ink); font-size: 15px; font-family: ui-monospace, monospace; }
.ck-row { display: flex; gap: 12px; } .ck-row label { flex: 1; }
.ck-form .btn { width: 100%; }
.ck-note { font-size: 12px; color: var(--muted); margin: 16px 0 8px; }
.ck-cancel { display: block; text-align: center; color: var(--muted); font-size: 14px; }