:root {
    --navy: #071b3f;
    --blue: #123d78;
    --gold: #c99a38;
    /* Vert petrole du flyer : reserve aux benefices et a l'encart d'engagement. */
    --teal: #0f5b5e;
    --teal-bright: #14776f;
    --ink: #142033;
    --paper: #f5f7f8;
    --white: #ffffff;
    --line: #dce2e7;
    --muted: #667382;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--ink);
    background: var(--paper);
    font-family: "Avenir Next", "Segoe UI", sans-serif;
    line-height: 1.5;
}
a { color: inherit; }
svg { width: 100%; height: 100%; display: block; }

.site-header {
    min-height: 88px;
    padding: 12px clamp(24px, 5vw, 76px);
    display: grid;
    grid-template-columns: 170px 1fr 170px;
    align-items: center;
    gap: 24px;
    background: rgba(255, 255, 255, .96);
    border-bottom: 1px solid var(--line);
    position: relative;
    z-index: 2;
}
.brand { width: 132px; height: 58px; display: block; overflow: hidden; }
.brand img { width: 100%; height: 100%; object-fit: cover; }
.site-nav { display: flex; justify-content: center; gap: clamp(24px, 4vw, 56px); }
.site-nav a, .login-link { font-size: .78rem; font-weight: 700; text-decoration: none; text-transform: uppercase; }
.site-nav a { color: #4c5869; }
.login-link { display: flex; justify-content: flex-end; align-items: center; gap: 12px; color: var(--navy); }

.hero {
    padding: clamp(56px, 8vh, 104px) clamp(24px, 5vw, 76px) clamp(56px, 8vh, 96px);
    display: grid;
    grid-template-columns: minmax(320px, 1.08fr) minmax(300px, .92fr);
    align-items: center;
    gap: clamp(44px, 6vw, 96px);
    background-color: #eef2f4;
    background-image: linear-gradient(rgba(7, 27, 63, .045) 1px, transparent 1px), linear-gradient(90deg, rgba(7, 27, 63, .045) 1px, transparent 1px);
    background-size: 42px 42px;
}
.hero-copy { max-width: 720px; }
.eyebrow {
    margin: 0 0 20px;
    color: var(--gold);
    font-size: .72rem;
    font-weight: 800;
    letter-spacing: .16em;
    text-transform: uppercase;
}
h1, h2, h3 { margin-top: 0; letter-spacing: 0; }
h1 {
    margin-bottom: 22px;
    color: var(--navy);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(2.6rem, 5.2vw, 4.7rem);
    font-weight: 600;
    line-height: 1.04;
}
h1 em { color: var(--teal-bright); font-style: normal; }
.hero-note { max-width: 560px; margin: 0; color: #566273; font-size: 1.05rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { min-height: 48px; padding: 0 24px; display: inline-flex; align-items: center; justify-content: center; gap: 18px; border: 1px solid transparent; text-decoration: none; font-size: .82rem; font-weight: 800; }
.button-primary { color: var(--white); background: var(--navy); }
.button-secondary { color: var(--navy); border-color: #aab5c1; background: rgba(255,255,255,.6); }
.button-light { color: var(--navy); background: var(--white); }

/* Encart d'engagement : reprise de l'accroche du flyer. */
.pledge {
    padding: clamp(28px, 3.4vw, 44px);
    display: grid;
    grid-template-columns: 66px 1fr;
    align-items: center;
    gap: clamp(20px, 2.4vw, 32px);
    color: var(--white);
    background: var(--teal);
    border-left: 4px solid var(--gold);
    box-shadow: 0 26px 60px rgba(7, 27, 63, .22);
}
.pledge-icon { width: 66px; height: 66px; padding: 15px; border: 1.5px solid rgba(255, 255, 255, .5); border-radius: 50%; color: var(--gold); }
.pledge p { margin: 0; font-size: clamp(1rem, 1.25vw, 1.15rem); }
.pledge strong { color: var(--gold); letter-spacing: .04em; }

.trust-strip { padding: 22px clamp(24px, 5vw, 76px); display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; color: rgba(255,255,255,.78); background: var(--navy); font-size: .7rem; font-weight: 800; letter-spacing: .1em; text-align: center; text-transform: uppercase; }
.trust-strip span + span { border-left: 1px solid rgba(255,255,255,.2); }

.section-heading h2 { font-family: Georgia, "Times New Roman", serif; font-weight: 500; line-height: 1.08; color: var(--navy); font-size: clamp(2.2rem, 3.6vw, 3.6rem); }
.section-heading.centered { max-width: 760px; margin: 0 auto clamp(46px, 5vw, 72px); text-align: center; }
.section-heading.centered h2 { margin: 0; }

.missions { padding: clamp(72px, 9vw, 130px) clamp(24px, 6vw, 96px); background: var(--white); }
.mission-grid, .benefit-grid { max-width: 1360px; margin: 0 auto; display: grid; gap: clamp(20px, 2vw, 28px); }
.mission-grid { grid-template-columns: repeat(auto-fit, minmax(196px, 1fr)); }
.mission-grid article, .benefit-grid article { padding: clamp(26px, 2.4vw, 34px) clamp(20px, 2vw, 26px); display: flex; flex-direction: column; align-items: center; text-align: center; border: 1px solid var(--line); background: var(--white); }
.mission-icon, .benefit-icon { width: 68px; height: 68px; margin-bottom: 22px; padding: 18px; display: block; border-radius: 50%; color: var(--white); background: var(--navy); }
.mission-grid h3, .benefit-grid h3 { margin-bottom: 10px; color: var(--navy); font-size: 1.02rem; line-height: 1.3; }
.mission-grid p, .benefit-grid p { margin: 0; color: var(--muted); font-size: .92rem; }

.pourquoi { padding: clamp(72px, 9vw, 130px) clamp(24px, 6vw, 96px); background: var(--paper); }
.benefit-grid { grid-template-columns: repeat(auto-fit, minmax(228px, 1fr)); }
.benefit-icon { background: var(--teal-bright); }

.banner {
    padding: clamp(46px, 5.5vw, 76px) clamp(24px, 6vw, 96px);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(24px, 3.5vw, 52px);
    color: var(--white);
    background: var(--navy);
}
.banner-icon { flex: 0 0 auto; width: 86px; height: 86px; padding: 20px; border: 1.5px solid rgba(255, 255, 255, .35); border-radius: 50%; color: var(--gold); }
.banner p { max-width: 700px; margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(1.4rem, 2.6vw, 2.3rem); line-height: 1.25; }
.banner strong { color: var(--gold); font-weight: 500; }

.contact { padding: clamp(76px, 9vw, 132px) 24px; background: var(--white); text-align: center; border-top: 1px solid var(--line); }
.contact h2 { max-width: 860px; margin: 0 auto 40px; color: var(--navy); font-family: Georgia, "Times New Roman", serif; font-weight: 500; font-size: clamp(2rem, 3.6vw, 3.4rem); line-height: 1.1; }
.contact .button { min-width: min(100%, 320px); }

footer { min-height: 105px; padding: 20px clamp(24px, 5vw, 76px); display: grid; grid-template-columns: 150px 1fr 150px; align-items: center; gap: 24px; background: var(--paper); color: #667180; font-size: .72rem; border-top: 1px solid var(--line); }
footer img { width: 110px; height: 55px; object-fit: cover; }
footer p { text-align: center; }
footer a { text-align: right; font-weight: 800; text-transform: uppercase; }

@media (max-width: 980px) {
    .site-header { grid-template-columns: 1fr auto; }
    .site-nav { display: none; }
    .hero { grid-template-columns: 1fr; padding-top: 64px; }
    .banner { flex-direction: column; text-align: center; }
}

@media (max-width: 620px) {
    .site-header { min-height: 74px; padding: 8px 18px; grid-template-columns: 110px 1fr; }
    .brand { width: 104px; height: 48px; }
    .login-link span:first-child { font-size: .68rem; }
    .hero { padding: 48px 20px 44px; }
    .hero-actions { display: grid; }
    .pledge { grid-template-columns: 1fr; justify-items: center; text-align: center; }
    .trust-strip { grid-template-columns: 1fr 1fr; padding: 20px; font-size: .58rem; }
    .trust-strip span + span { border-left: 0; }
    .missions, .pourquoi { padding: 66px 20px; }
    footer { grid-template-columns: 1fr; justify-items: center; }
    footer p, footer a { text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}