/* Base : reset, typographie, gabarit, en-tête, pied de page, boutons. */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }
body { margin: 0; background: var(--bg); color: var(--fg); font: 400 1.0625rem/1.6 var(--f-body); -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4 { font-family: var(--f-display); margin: 0; text-wrap: balance; letter-spacing: -0.01em; }
p { margin: 0; }
a { color: inherit; }
img { max-width: 100%; height: auto; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--accent-ink); padding: 0.7rem 1rem; z-index: 100; }
.skip:focus { left: 0; }

.wrap { width: 100%; max-width: 72rem; margin-inline: auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.band { padding-block: clamp(3rem, 7vw, 5.5rem); }
.band.alt { background: var(--surface); border-block: 1px solid var(--line); }
.eyebrow { font: 500 0.78rem/1 var(--f-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin-bottom: 1rem; }
.h2 { font-size: clamp(1.75rem, 3.6vw, 2.5rem); font-weight: 700; line-height: 1.15; max-width: 24ch; }
.lead { font-size: 1.18rem; color: var(--muted); max-width: 62ch; margin-top: 1.1rem; }
.muted { color: var(--muted); }
section[id] { scroll-margin-top: 4.5rem; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* En-tête */
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50; background: var(--surface); border-bottom: 1px solid var(--line); }
.top::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); background: var(--surface); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 4rem; }
.brand { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; min-width: 0; }
.brand svg { width: 2.4rem; height: 2.4rem; flex: none; }
.brand b { display: block; font: 800 0.95rem/1.1 var(--f-display); letter-spacing: 0.02em; }
.brand small { display: block; font: 500 0.66rem/1.2 var(--f-mono); letter-spacing: 0.14em; color: var(--muted); text-transform: uppercase; margin-top: 0.2rem; }
.nav { display: flex; align-items: center; gap: 0.25rem; }
.nav a { text-decoration: none; font: 600 0.9rem/1 var(--f-display); padding: 0.7rem 0.8rem; border-radius: var(--radius); color: var(--muted); }
.nav a:hover { color: var(--fg); background: var(--surface-2); }
.nav a[aria-current="page"] { color: var(--fg); box-shadow: inset 0 -3px 0 var(--accent); border-radius: 0; }
.nav a.cta { background: var(--accent); color: var(--accent-ink); margin-left: 0.5rem; box-shadow: none; border-radius: var(--radius); }
.nav a.cta:hover { filter: brightness(1.08); }
.burger { display: none; background: none; border: 1px solid var(--line); border-radius: 6px; color: var(--fg); width: 2.75rem; height: 2.75rem; cursor: pointer; align-items: center; justify-content: center; }
.burger span, .burger span::before, .burger span::after { display: block; width: 1.2rem; height: 2px; background: currentColor; position: relative; content: ""; }
.burger span::before { position: absolute; top: -6px; left: 0; }
.burger span::after { position: absolute; top: 6px; left: 0; }
@media (max-width: 60rem) {
  .burger { display: inline-flex; }
  .nav { position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: stretch; background: var(--surface); border-bottom: 1px solid var(--line); padding: 0.5rem max(16px, env(safe-area-inset-right, 0px)) 1rem max(16px, env(safe-area-inset-left, 0px)); gap: 0; display: none; }
  .nav.open { display: flex; }
  .nav a { padding: 0.95rem 0.5rem; border-bottom: 1px solid var(--line); border-radius: 0; font-size: 1rem; }
  .nav a[aria-current="page"] { box-shadow: inset 4px 0 0 var(--accent); padding-left: 0.9rem; }
  .nav a.cta { margin: 0.8rem 0 0; text-align: center; border-radius: 6px; border: 0; }
}

/* Boutons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; min-height: 3rem; padding: 0 1.5rem; border-radius: var(--radius); font: 700 0.95rem/1 var(--f-display); text-decoration: none; border: 2px solid transparent; cursor: pointer; background: var(--accent); color: var(--accent-ink); }
.btn:hover { filter: brightness(1.08); }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; filter: none; }
.btn.line { background: transparent; color: var(--fg); border-color: var(--line); }
.btn.line:hover { border-color: var(--accent); filter: none; }
.btn.light { background: var(--hero-accent); color: #08201E; }
.btn.ghost { background: transparent; color: var(--hero-fg); border-color: #5B677A; }
.btn.ghost:hover { border-color: var(--hero-fg); filter: none; }
.actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2rem; }

/* Pied de page */
.foot { background: var(--hero-bg); color: var(--hero-muted); }
.foot .grid { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr)); gap: 2rem; padding-block: 3rem 2rem; }
.foot h4 { font: 500 0.74rem/1 var(--f-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--hero-accent); margin-bottom: 1rem; }
.foot ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.5rem; }
.foot a { text-decoration: none; }
.foot a:hover { color: var(--hero-fg); text-decoration: underline; }
.foot b { color: var(--hero-fg); font-family: var(--f-display); letter-spacing: 0.03em; }
.foot .legal { border-top: 1px solid #2B3544; padding-block: 1.2rem; font-size: 0.88rem; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 2rem; }
@media (max-width: 52rem) { .foot .grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
@media (max-width: 32rem) { .foot .grid { grid-template-columns: minmax(0, 1fr); } }