:root{
    --big-primary:#00b4b3;
    --big-dark:#008483;
    --big-deep:#075b66;
    --big-navy:#14364b;
    --big-soft:#eaf9f9;
    --big-soft-2:#f5fbfb;
    --big-border:#a8e4e2;
    --text:#18384a;
    --muted:#59707d;
    --white:#ffffff;
    --shadow:0 12px 30px rgba(0,132,131,.13);
}

#eco *{box-sizing:border-box}
#eco {
    margin:0;
    font-family:Inter,Segoe UI,Arial,sans-serif;
    background:
            radial-gradient(circle at top right, rgba(0,180,179,.08), transparent 24%),
            radial-gradient(circle at bottom left, rgba(0,132,131,.08), transparent 26%),
            #fff;
    color:var(--text);
}

#eco.page{
    width:min(1500px,96vw);
    margin:0 auto;
    padding:38px 24px 50px;
}

#eco header{
    text-align:center;
    margin-bottom:30px;
}

#eco header h1{
    margin:0;
    font-size:clamp(32px,4vw,58px);
    line-height:1;
    color:var(--big-navy);
    letter-spacing:-1.5px;
}

#eco header h1 span{ color:var(--big-dark); }

#eco header p{
    margin:10px 0 0;
    color:var(--muted);
    font-size:18px;
}

.ecosystem{
    display:grid;
    grid-template-columns:1fr 1.35fr 1fr;
    grid-template-areas:
        "market core partners"
        "payments payments payments";
    gap:24px;
    align-items:stretch;
    position:relative;
}

.panel{
    border:1px solid var(--big-border);
    border-radius:24px;
    padding:22px;
    background:linear-gradient(180deg,var(--big-soft-2),var(--big-soft));
    box-shadow:var(--shadow);
}

.market{grid-area:market}
.core{grid-area:core}
.partners{grid-area:partners}
.payments{grid-area:payments}

.panel-title{
    margin:0 0 6px;
    color:var(--big-navy);
    font-size:19px;
    font-weight:800;
    text-transform:uppercase;
    letter-spacing:.3px;
}

.panel-subtitle{
    margin:0 0 18px;
    color:var(--muted);
    font-size:14px;
}

.cards{
    display:grid;
    gap:14px;
}

#eco .card{
    background:var(--white);
    border:1px solid var(--big-border);
    border-radius:10px;
    padding:10px;
    display:flex;
    align-items:center;
    gap:14px;
    min-height:86px;
    transition:.18s ease;
}

.card:hover{
    transform:translateY(-2px);
    box-shadow:0 10px 22px rgba(0,132,131,.10);
}

.icon{
    width:52px;
    height:52px;
    border-radius:50%;
    flex:0 0 52px;
    display:grid;
    place-items:center;
    color:#fff;
    font-size:25px;
    background:linear-gradient(145deg,var(--big-primary),var(--big-dark));
    box-shadow:inset 0 0 0 1px rgba(255,255,255,.25);
}

#eco .card h3{
    margin:0 0 4px;
    font-size:18px;
    color:var(--big-navy);
}

#eco .card p{
    margin:0;
    color:var(--muted);
    line-height:1.35;
    font-size:14px;
}

.core{
    color:#fff;
    border-radius:30px;
    padding:28px;
    background:
            linear-gradient(145deg, rgba(255,255,255,.08), transparent 50%),
            linear-gradient(145deg,var(--big-primary),var(--big-dark) 58%,#006a69);
    box-shadow:0 18px 40px rgba(0,132,131,.25);
    display:flex;
    flex-direction:column;
    justify-content:center;
    position:relative;
    overflow:hidden;
}

.core::after{
    content:"";
    position:absolute;
    width:260px;height:260px;
    border-radius:50%;
    border:45px solid rgba(255,255,255,.05);
    right:-95px;top:-95px;
}

.core-label{
    position:relative;
    z-index:1;
    text-align:center;
}

.core-label .eyebrow{
    font-size:14px;
    font-weight:700;
    text-transform:uppercase;
    letter-spacing:1.5px;
    opacity:.85;
}

.core-label h2{
    margin:8px 0 2px;
    font-size:clamp(40px,5vw,68px);
    line-height:.95;
    letter-spacing:-2px;
}

.core-label .tagline{
    font-size:22px;
    font-weight:700;
    margin:8px 0 24px;
}

.core-modules{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:10px;
    position:relative;
    z-index:1;
}

.module{
    min-height:90px;
    padding:14px 8px;
    border-radius:16px;
    text-align:center;
    background:rgba(255,255,255,.93);
    color:var(--big-navy);
    display:flex;
    flex-direction:column;
    justify-content:center;
    gap:6px;
    font-size:13px;
    font-weight:800;
}

.module span{
    display:block;
    color:var(--big-dark);
    font-size:23px;
}

.owner{
    margin-top:16px;
    background:rgba(255,255,255,.92);
    color:var(--big-navy);
    border-radius:18px;
    padding:14px 16px;
    text-align:center;
    font-weight:800;
    position:relative;
    z-index:1;
}

.owner small{
    display:block;
    margin-top:3px;
    font-weight:500;
    color:var(--muted);
}

.payments{
    display:grid;
    grid-template-columns:260px 1fr;
    align-items:center;
    gap:20px;
}

.payment-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:14px;
}

.flow-note{
    margin-top:24px;
    display:flex;
    justify-content:center;
    gap:14px;
    flex-wrap:wrap;
    color:var(--muted);
    font-size:13px;
}

.flow-note span{
    background:#fff;
    border:1px solid #d5eeee;
    padding:8px 12px;
    border-radius:999px;
}

.arrow{
    color:var(--big-dark);
    font-weight:900;
    margin:0 5px;
}

#eco footer{
    margin-top:28px;
    display:flex;
    justify-content:space-between;
    gap:20px;
    align-items:center;
    color:var(--muted);
    font-size:13px;
}

#eco .brand{
    font-size:24px;
    font-weight:800;
    color:var(--big-navy);
}
#eco .brand span{color:var(--big-dark)}

@media(max-width:1050px){
    .ecosystem{
        grid-template-columns:1fr 1fr;
        grid-template-areas:
          "core core"
          "market partners"
          "payments payments";
    }
    .payments{
        grid-template-columns:1fr;
    }
}

@media(max-width:720px){
    .page{padding:24px 14px 36px}
    .ecosystem{
        grid-template-columns:1fr;
        grid-template-areas:
          "core"
          "market"
          "payments"
          "partners";
    }
    .core-modules{grid-template-columns:repeat(2,1fr)}
    .payment-grid{grid-template-columns:1fr}
    #eco footer{flex-direction:column;align-items:flex-start}
}