:root{
    --blk:#080808;
    --dk:#101010;
    --dk2:#141414;

    --silver:#c8c8c8;
    --sil2:#888;
    --sil3:#555;

    --cyan:#00d4ff;
    --cyan-rgb:0,212,255;

    --radius:14px;

    --chrome:linear-gradient(
        160deg,
        #f0f0f0 0%,
        #a8a8a8 30%,
        #e8e8e8 50%,
        #909090 70%,
        #d0d0d0 100%
    );
}

html{
    scroll-behavior:smooth;
}

body{
    background:var(--blk);
    color:#fff;
    font-family:'Segoe UI',sans-serif;
    overflow-x:hidden;
}

::-webkit-scrollbar{
    width:4px;
}

::-webkit-scrollbar-thumb{
    background:var(--cyan);
}

.glass-nav{
    background:rgba(8,8,8,.88);
    backdrop-filter:blur(24px);
    border-bottom:1px solid rgba(255,255,255,.05);
}

.logo-mark{
    font-size:2rem;
    font-weight:900;
    letter-spacing:.12em;

    background:var(--chrome);

    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
}

.logo-sub{
    color:var(--sil2);
    font-size:.55rem;
    letter-spacing:.28em;
    text-transform:uppercase;
}

.nav-link{
    color:var(--sil2)!important;
    text-transform:uppercase;
    font-size:.8rem;
    letter-spacing:.12em;
}

.nav-link:hover{
    color:var(--cyan)!important;
}

.nav-btn:hover{
    box-shadow:0 0 20px rgba(var(--cyan-rgb),.4);
}

.hero-section{
    min-height:100vh;

    position:relative;
    overflow:hidden;

    display:flex;
    align-items:center;

    background:
    radial-gradient(
        ellipse 80% 60% at 50% 40%,
        #0d1826 0%,
        var(--blk) 65%
    );
}

.grid-bg{
    position:absolute;
    inset:0;

    background-image:
    linear-gradient(rgba(var(--cyan-rgb),.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(var(--cyan-rgb),.03) 1px,transparent 1px);

    background-size:55px 55px;

    animation:gridScroll 18s linear infinite;
}

@keyframes gridScroll{
    to{
        transform:translateY(55px);
    }
}

.hero-glow{
    position:absolute;

    width:700px;
    height:700px;

    top:50%;
    left:50%;

    transform:translate(-50%,-50%);

    background:
    radial-gradient(
        circle,
        rgba(var(--cyan-rgb),.08),
        transparent 65%
    );
}

.hero-badge{
    display:inline-block;

    border:1px solid rgba(var(--cyan-rgb),.4);

    color:var(--cyan);

    padding:.5rem 1rem;

    border-radius:30px;

    margin-bottom:2rem;
}

.hero-title{
    font-size:clamp(5rem,16vw,12rem);

    font-weight:900;

    line-height:1;

    background:var(--chrome);

    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
}

.hero-subtitle{
    color:var(--sil2);

    letter-spacing:.45em;

    text-transform:uppercase;
}

.hero-tag{
    color:var(--sil3);

    letter-spacing:.2em;
}

.hero-tag span{
    color:var(--cyan);
}

.btn-esv{
    background:var(--cyan);
    border:none;
    color:#000;
    font-weight:700;
}

.btn-esv:hover{
    background:var(--cyan);

    color:#000;

    transform:translateY(-3px);

    box-shadow:
    0 10px 30px rgba(var(--cyan-rgb),.4);
}

.scroll-down{
    position:absolute;

    left:50%;
    bottom:30px;

    transform:translateX(-50%);

    font-size:.7rem;

    letter-spacing:.25em;

    color:var(--sil3);

    animation:bob 2s infinite;
}

@keyframes bob{
    0%,100%{
        transform:translateX(-50%);
    }

    50%{
        transform:
        translateX(-50%)
        translateY(8px);
    }
}

.stats-section{
    padding:50px 0;

    background:
    linear-gradient(
        135deg,
        #111,
        #161616
    );

    border-top:
    1px solid rgba(var(--cyan-rgb),.08);

    border-bottom:
    1px solid rgba(var(--cyan-rgb),.08);
}

.stat-number{
    font-size:2.5rem;

    font-weight:900;

    background:var(--chrome);

    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
}

.stat-label{
    color:var(--sil2);

    text-transform:uppercase;

    font-size:.7rem;

    letter-spacing:.15em;
}

.section-tag{
    color:var(--cyan);

    text-transform:uppercase;

    letter-spacing:.3em;

    font-size:.7rem;
}

.section-title{
    margin-top:15px;

    font-size:clamp(2rem,4vw,3rem);

    font-weight:800;

    background:
    linear-gradient(
        135deg,
        #fff,
        #999
    );

    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
}

.section-subtitle{
    color:var(--sil2);

    max-width:650px;

    margin:20px auto 0;

    line-height:1.8;
}

.bg-dark-esv{
    background:var(--dk2);
}

.product-card{
    background:
    linear-gradient(
        150deg,
        #171717,
        #111
    );

    border:
    1px solid rgba(255,255,255,.06);

    border-radius:var(--radius);

    overflow:hidden;

    transition:.4s;
}

.product-card:hover{
    transform:
    translateY(-10px);

    border-color:
    rgba(var(--cyan-rgb),.3);

    box-shadow:
    0 25px 45px rgba(0,0,0,.45);
}

.product-image{
    height:220px;

    display:flex;

    justify-content:center;

    align-items:center;

    position:relative;
}

.product-badge{
    position:absolute;

    top:15px;
    right:15px;
}

.product-icon{
    font-size:5rem;
}

.eco-bg{
    background:
    linear-gradient(
        135deg,
        #071a10,
        #0d2016
    );
}

.premium-bg{
    background:
    linear-gradient(
        135deg,
        #1e0e00,
        #2a1200
    );
}

.product-specs small{
    display:block;

    color:var(--sil2);

    font-size:.7rem;
}

.card-footer{
    background:transparent;

    border-top:
    1px solid rgba(255,255,255,.05);

    display:flex;

    justify-content:space-between;

    align-items:center;
}

.price{
    font-size:1.4rem;

    font-weight:900;
}

.feature-card{
    background:linear-gradient(150deg,#161616,#111);
    border:1px solid rgba(255,255,255,.06);
    border-radius:var(--radius);
    padding:1.8rem;
    height:100%;
    transition:.35s;
}

.feature-card:hover{
    transform:translateY(-8px);
    border-color:rgba(var(--cyan-rgb),.2);
    box-shadow:0 20px 40px rgba(0,0,0,.45);
}

.feature-card i{
    font-size:2rem;
    color:var(--cyan);
    margin-bottom:1rem;
}

.feature-card h5{
    margin-bottom:.75rem;
    font-weight:700;
}

.feature-card p{
    color:var(--sil2);
    line-height:1.7;
}

.feature-wide{
    background:linear-gradient(135deg,#0c1a28,#111);
}

.feature-text{
    color:var(--sil2);
    line-height:1.9;
}

.feature-list{
    list-style:none;
    padding:0;
    margin-top:2rem;
}

.feature-list li{
    padding:.85rem 0;
    border-bottom:1px solid rgba(255,255,255,.05);
}

.feature-list li::before{
    content:"▸";
    color:var(--cyan);
    margin-right:.75rem;
}

.tech-section{
    background:
    linear-gradient(
        90deg,
        var(--blk),
        #0c1826,
        var(--blk)
    );

    border-top:1px solid rgba(var(--cyan-rgb),.08);
    border-bottom:1px solid rgba(var(--cyan-rgb),.08);
}

.tech-item{
    background:linear-gradient(145deg,#191919,#1e1e1e);
    border:1px solid rgba(var(--cyan-rgb),.18);

    border-radius:12px;

    padding:1.5rem 1rem;

    transition:.3s;
}

.tech-item:hover{
    transform:translateY(-6px);
}

.tech-item{
    font-size:2rem;
}

.tech-item span{
    display:block;
    margin-top:.8rem;
    font-size:.75rem;
    letter-spacing:.15em;
    text-transform:uppercase;
    color:var(--sil2);
}

.testimonial-card{
    background:linear-gradient(150deg,#161616,#111);

    border:1px solid rgba(255,255,255,.06);

    border-radius:var(--radius);

    padding:2rem;

    height:100%;

    transition:.35s;
}

.testimonial-card:hover{
    transform:translateY(-6px);

    border-color:rgba(var(--cyan-rgb),.15);
}

.stars{
    color:var(--cyan);

    letter-spacing:3px;

    margin-bottom:1rem;
}

.testimonial-card p{
    color:var(--sil2);

    line-height:1.8;

    font-style:italic;
}

.testimonial-author{
    display:flex;
    align-items:center;
    gap:1rem;
    margin-top:1.5rem;
}

.testimonial-author small{
    display:block;
    color:var(--sil2);
}

.avatar{
    width:48px;
    height:48px;

    border-radius:50%;

    display:flex;
    align-items:center;
    justify-content:center;

    font-weight:700;
}

.avatar-blue{
    background:linear-gradient(135deg,#00d4ff,#0055ff);
    color:#000;
}

.avatar-orange{
    background:linear-gradient(135deg,#ff6600,#ff0066);
}

.avatar-green{
    background:linear-gradient(135deg,#00ff88,#00aaff);
    color:#000;
}

.cta-section{
    position:relative;

    overflow:hidden;

    padding:6rem 0;

    background:
    radial-gradient(
        ellipse 80% 60% at 50% 50%,
        #0c1826,
        var(--blk)
    );
}

.cta-glow{
    position:absolute;

    width:600px;
    height:350px;

    top:50%;
    left:50%;

    transform:translate(-50%,-50%);

    background:
    radial-gradient(
        ellipse,
        rgba(var(--cyan-rgb),.06),
        transparent 70%
    );
}

.cta-title{
    font-size:clamp(2rem,4vw,3.5rem);

    font-weight:900;

    margin:1rem 0;

    background:
    linear-gradient(
        135deg,
        #fff,
        #999
    );

    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
}

.footer-esv{
    background:#060606;

    border-top:1px solid rgba(255,255,255,.05);

    padding:2rem 0;
}

.footer-logo{
    font-size:1.8rem;

    font-weight:900;

    letter-spacing:.15em;

    background:
    linear-gradient(
        135deg,
        #555,
        #333
    );

    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
}

.footer-esv a{
    color:var(--sil3);
    text-decoration:none;
    transition:.2s;
}

.footer-esv a:hover{
    color:var(--cyan);
}

.ai{
    opacity:0;
    transform:translateY(35px);

    transition:
        opacity .7s,
        transform .7s;
}

.ai.v{
    opacity:1;
    transform:translateY(0);
}

@media(max-width:991px){

    .hero-title{
        text-align:center;
    }

    .hero-subtitle,
    .hero-tag{
        text-align:center;
    }

    .hero-badge{
        display:table;
        margin:0 auto 2rem;
    }
}

@media(max-width:768px){

    .hero-title{
        font-size:5rem;
    }

    .product-icon{
        font-size:4rem;
    }

    .cta-section{
        padding:4rem 0;
    }

    .section-title{
        font-size:2rem;
    }

    .testimonial-card,
    .feature-card{
        padding:1.5rem;
    }
}