:root{
    --bg: #f5f5f7;
    --surface: rgba(255,255,255,0.82);
    --surface-strong: #ffffff;
    --text: #111827;
    --muted: #6b7280;
    --line: rgba(17, 24, 39, 0.08);
    --primary: #111111;
    --accent: #d6a77a;
    --accent-2: #f4e2d2;
    --shadow: 0 20px 60px rgba(17,24,39,0.08);
    --shadow-soft: 0 10px 30px rgba(17,24,39,0.06);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --container: 1180px;
}

*,
*::before,
*::after{
    box-sizing:border-box;
}

html{
    scroll-behavior:smooth;
}

body{
    margin:0;
    font-family: Arial, Helvetica, sans-serif;
    color:var(--text);
    line-height:1.55;
    background:
        radial-gradient(circle at top left, rgba(214,167,122,0.18), transparent 24%),
        radial-gradient(circle at top right, rgba(0,0,0,0.05), transparent 18%),
        linear-gradient(180deg, #f7f7f8 0%, #f2f2f4 100%);
}

img{
    max-width:100%;
    display:block;
}

a{
    color:inherit;
    text-decoration:none;
}

button{
    font:inherit;
}

.container{
    width:min(var(--container), calc(100% - 32px));
    margin:0 auto;
}

/* ===== Header ===== */

.site-header{
    position:sticky;
    top:0;
    z-index:1000;
    backdrop-filter:blur(12px);
    background:rgba(255,255,255,0.72);
    border-bottom:1px solid rgba(17,24,39,0.05);
}

.header-inner{
    min-height:78px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    position:relative;
}

.logo{
    font-size:1.8rem;
    font-weight:800;
    letter-spacing:-0.03em;
    color:var(--primary);
}

.main-nav{
    display:flex;
    align-items:center;
    gap:14px;
    flex-wrap:wrap;
}

.main-nav a{
    color:var(--muted);
    font-weight:600;
    transition:0.2s ease;
}

.main-nav a:hover{
    color:var(--text);
}

.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:13px 20px;
    border-radius:999px;
    font-weight:700;
    border:1px solid transparent;
    transition:0.25s ease;
    cursor:pointer;
}

.btn:hover{
    transform:translateY(-1px);
}

.btn-dark{
    background:#111;
    color:#fff !important;
    box-shadow:0 10px 30px rgba(17,17,17,0.18);
}

.btn-light{
    background:#fff;
    color:#111;
    border:1px solid rgba(17,17,17,0.08);
    box-shadow:var(--shadow-soft);
}

.btn-gold{
    background:linear-gradient(135deg, #c99463 0%, #f1d2b2 100%);
    color:#111 !important;
    box-shadow:0 14px 34px rgba(201,148,99,0.28);
}

/* ===== Menu hamburger ===== */

.menu-toggle{
    display:none;
    width:48px;
    height:48px;
    border:none;
    background:#111;
    border-radius:14px;
    padding:0;
    cursor:pointer;
    align-items:center;
    justify-content:center;
    flex-direction:column;
    gap:5px;
    box-shadow:0 10px 25px rgba(0,0,0,0.12);
}

.menu-toggle span{
    display:block;
    width:20px;
    height:2px;
    background:#fff;
    border-radius:999px;
    transition:0.25s ease;
}

.menu-toggle.active span:nth-child(1){
    transform:translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2){
    opacity:0;
}

.menu-toggle.active span:nth-child(3){
    transform:translateY(-7px) rotate(-45deg);
}

/* ===== Hero ===== */

.hero{
    padding:72px 0 42px;
}

.hero-grid{
    display:grid;
    grid-template-columns:1.1fr 0.9fr;
    gap:30px;
    align-items:center;
}

.hero-card{
    background:var(--surface);
    border:1px solid rgba(255,255,255,0.55);
    border-radius:var(--radius-xl);
    padding:54px;
    box-shadow:var(--shadow);
    backdrop-filter:blur(12px);
}

.eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:8px 14px;
    border-radius:999px;
    background:rgba(214,167,122,0.14);
    color:#8a5b32;
    font-size:0.92rem;
    font-weight:700;
    margin-bottom:18px;
}

.hero h1{
    margin:0 0 18px;
    font-size:clamp(2.2rem, 5vw, 4.5rem);
    line-height:1.02;
    letter-spacing:-0.05em;
}

.hero p{
    margin:0;
    max-width:680px;
    font-size:1.12rem;
    color:var(--muted);
}

.hero-actions{
    display:flex;
    gap:14px;
    flex-wrap:wrap;
    margin-top:28px;
}

.hero-stats{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:14px;
    margin-top:28px;
}

.stat-box{
    background:#fff;
    border-radius:18px;
    padding:18px;
    border:1px solid rgba(17,24,39,0.05);
    box-shadow:var(--shadow-soft);
}

.stat-box strong{
    display:block;
    font-size:1.6rem;
    margin-bottom:4px;
}

.stat-box span{
    color:var(--muted);
    font-size:0.95rem;
}

.hero-visual{
    position:relative;
    min-height:540px;
}

.visual-main,
.visual-small{
    position:absolute;
    overflow:hidden;
    border-radius:26px;
    box-shadow:var(--shadow);
    border:1px solid rgba(255,255,255,0.55);
}

.visual-main{
    inset:0 0 60px 40px;
}

.visual-small{
    width:240px;
    height:180px;
    left:0;
    bottom:0;
}

.visual-main img,
.visual-small img{
    width:100%;
    height:100%;
    object-fit:cover;
}

.floating-badge{
    position:absolute;
    top:22px;
    right:18px;
    background:rgba(255,255,255,0.9);
    border-radius:999px;
    padding:10px 14px;
    font-weight:700;
    box-shadow:0 12px 30px rgba(17,24,39,0.08);
    z-index:2;
}

/* ===== Sections ===== */

.section{
    padding:42px 0 20px;
}

.section-head{
    margin-bottom:26px;
}

.section-head h2{
    margin:0 0 10px;
    font-size:clamp(1.8rem, 3vw, 2.8rem);
    letter-spacing:-0.04em;
}

.section-head p{
    margin:0;
    max-width:780px;
    color:var(--muted);
    font-size:1.04rem;
}

/* ===== Features ===== */

.features-grid{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:22px;
}

.feature-card{
    background:var(--surface-strong);
    border-radius:24px;
    padding:28px;
    box-shadow:var(--shadow);
    border:1px solid rgba(17,24,39,0.05);
    transition:0.25s ease;
}

.feature-card:hover{
    transform:translateY(-5px);
}

.feature-icon{
    width:54px;
    height:54px;
    display:grid;
    place-items:center;
    border-radius:16px;
    background:linear-gradient(135deg, #111 0%, #2d2d2d 100%);
    color:#fff;
    font-size:1.3rem;
    font-weight:700;
    margin-bottom:16px;
}

.feature-card h3{
    margin:0 0 10px;
    font-size:1.3rem;
}

.feature-card p{
    margin:0;
    color:var(--muted);
}

/* ===== Univers visuels ===== */

.universe-grid{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:22px;
}

.universe-card{
    position:relative;
    min-height:420px;
    overflow:hidden;
    border-radius:26px;
    box-shadow:var(--shadow);
}

.universe-card img{
    position:absolute;
    inset:0;
    width:100%;
    height:100%;
    object-fit:cover;
    transition:0.5s ease;
}

.universe-card:hover img{
    transform:scale(1.05);
}

.universe-overlay{
    position:absolute;
    inset:0;
    background:linear-gradient(180deg, rgba(0,0,0,0.02) 10%, rgba(0,0,0,0.75) 100%);
    padding:24px;
    display:flex;
    flex-direction:column;
    justify-content:flex-end;
    color:#fff;
}

.universe-overlay h3{
    margin:0 0 8px;
    font-size:1.55rem;
}

.universe-overlay p{
    margin:0;
    color:rgba(255,255,255,0.9);
}

/* ===== CTA ===== */

.cta-band{
    margin:48px 0 6px;
}

.cta-box{
    display:grid;
    grid-template-columns:1.2fr 0.8fr;
    gap:24px;
    align-items:center;
    background:linear-gradient(135deg, #111 0%, #2a2a2a 100%);
    color:#fff;
    border-radius:30px;
    padding:34px;
    box-shadow:0 20px 60px rgba(17,17,17,0.18);
}

.cta-box h2{
    margin:0 0 10px;
    font-size:clamp(1.8rem, 3vw, 2.7rem);
    letter-spacing:-0.04em;
}

.cta-box p{
    margin:0;
    color:rgba(255,255,255,0.82);
}

.cta-actions{
    display:flex;
    justify-content:flex-end;
    gap:12px;
    flex-wrap:wrap;
}

/* ===== Professionnels ===== */

.pro-list{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:20px;
    margin-top:22px;
}

.pro-card{
    background:#fff;
    border-radius:22px;
    padding:22px;
    box-shadow:var(--shadow);
    border:1px solid rgba(17,24,39,0.05);
    transition:0.25s ease;
}

.pro-card:hover{
    transform:translateY(-4px);
}

.pro-card h3{
    margin:0 0 8px;
    font-size:1.35rem;
}

.pro-card p{
    margin:0 0 18px;
    color:var(--muted);
}

/* ===== Footer ===== */

.site-footer{
    margin-top:56px;
    padding:40px 0 18px;
    background:#111;
    color:#fff;
}

.footer-grid{
    display:grid;
    grid-template-columns:1.2fr 0.7fr 0.8fr;
    gap:26px;
}

.footer-brand{
    font-size:1.5rem;
    font-weight:800;
    margin-bottom:12px;
}

.footer-title{
    font-weight:700;
    margin-bottom:12px;
}

.footer-links{
    list-style:none;
    margin:0;
    padding:0;
}

.footer-links li{
    margin-bottom:10px;
}

.footer-links a{
    color:rgba(255,255,255,0.82);
}

.footer-links a:hover{
    color:#fff;
}

.footer-bottom{
    margin-top:24px;
    padding-top:16px;
    border-top:1px solid rgba(255,255,255,0.08);
    color:rgba(255,255,255,0.72);
    font-size:0.95rem;
}

/* ===== Bouton retour en haut ===== */

#backToTop{
    position:fixed;
    right:20px;
    bottom:20px;
    width:48px;
    height:48px;
    border:none;
    border-radius:50%;
    background:#111;
    color:#fff;
    font-size:20px;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:center;
    box-shadow:0 10px 25px rgba(0,0,0,0.2);
    opacity:0;
    visibility:hidden;
    transform:translateY(10px);
    transition:all 0.3s ease;
    z-index:1200;
}

#backToTop.show{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
}

#backToTop:hover{
    background:#333;
    transform:translateY(-2px);
}

/* ===== Responsive tablette ===== */

@media (max-width: 1100px){
    .hero-grid,
    .cta-box,
    .features-grid,
    .universe-grid,
    .pro-list,
    .footer-grid{
        grid-template-columns:1fr;
    }

    .hero-visual{
        min-height:420px;
    }

    .cta-actions{
        justify-content:flex-start;
    }
}

/* ===== Responsive mobile ===== */

@media (max-width: 768px){
    .header-inner{
        min-height:78px;
        padding:14px 0;
        flex-direction:row;
        align-items:center;
        justify-content:space-between;
    }

    .logo{
        font-size:1.9rem;
    }

    .menu-toggle{
        display:flex;
        flex-shrink:0;
    }

    .main-nav{
        position:absolute;
        top:100%;
        left:0;
        right:0;
        display:none;
        flex-direction:column;
        align-items:stretch;
        gap:12px;
        padding:18px;
        margin-top:12px;
        background:rgba(255,255,255,0.98);
        border:1px solid rgba(17,24,39,0.06);
        border-radius:22px;
        box-shadow:0 20px 50px rgba(17,24,39,0.10);
        backdrop-filter:blur(10px);
        z-index:100;
    }

    .main-nav.open{
        display:flex;
    }

    .main-nav a{
        width:100%;
        padding:12px 14px;
        border-radius:14px;
        font-size:1rem;
    }

    .main-nav a:not(.btn):hover{
        background:rgba(17,24,39,0.04);
    }

    .main-nav .btn{
        width:100%;
    }

    .hero{
        padding-top:34px;
    }

    .hero-card{
        padding:28px;
    }

    .hero-stats{
        grid-template-columns:1fr;
    }

    .hero-visual{
        min-height:300px;
    }

    .visual-main{
        inset:0;
    }

    .visual-small{
        display:none;
    }

    .universe-card{
        min-height:320px;
    }

    .cta-box{
        padding:26px;
    }
}

/* ===== Très petit mobile ===== */

@media (max-width: 480px){
    .container{
        width:min(var(--container), calc(100% - 20px));
    }

    .hero-card,
    .feature-card,
    .pro-card{
        padding:20px;
    }

    .hero h1{
        font-size:2.4rem;
    }

    .section-head h2{
        font-size:2rem;
    }

    .btn{
        width:100%;
    }

    .hero-actions{
        flex-direction:column;
    }
}