:root {
    --bg: #000;
    --fg: #fff;
    --muted: #ccc;
    --border: #fff;
    --radius: 18px;
}
*{box-sizing:border-box;margin:0;padding:0;}
body { background: radial-gradient(circle at top left, #111 0%, #000 100%); color: var(--fg); font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; line-height:1.6; overflow-x:hidden; }

header {
    position: relative;
    text-align:center;
    padding:60px 24px 40px;
    border-bottom:2px solid rgba(255,255,255,0.2);
    background: linear-gradient(to bottom, #333 0%, rgba(51,51,51,0.8) 50%, rgba(0,0,0,0) 100%);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    overflow:hidden;
}

header::after {
    content: '';
    position: absolute;
    top: -100%;
    left: -100%;
    width: 200%;
    height: 200%;
    background: linear-gradient(60deg, rgba(255,255,255,0) 40%, rgba(255,255,255,0.3) 50%, rgba(255,255,255,0) 60%);
    transform: translate(-100%, -100%) rotate(0deg);
    animation: shine 2.5s ease-out 0.3s forwards;
}

@keyframes shine {
    0% { transform: translate(-150%, -150%) rotate(0deg); opacity: 0; }
    30% { opacity: 1; }
    100% { transform: translate(150%, 150%) rotate(0deg); opacity: 0; }
}

h1 {
    font-size: clamp(28px,4vw,52px);
    font-weight:800;
    letter-spacing:-0.02em;
    color:#fff !important;
    text-shadow:0 0 20px rgba(255,255,255,0.7);
    transition: text-shadow 0.3s ease;
    position: relative;
    z-index:2;
}
h1:hover { text-shadow:0 0 32px rgba(255,255,255,1); }

p.subtitle {
    font-size:18px;
    color:#fff !important;
    margin-top:8px;
    opacity:1;
    text-shadow:0 0 15px rgba(255,255,255,0.6);
    position: relative;
    z-index:2;
}

main { max-width:1000px; margin:0 auto; padding:40px 20px; display:flex; flex-direction:column; gap:100px; }

section.step { display:flex; align-items:center; justify-content:space-between; gap:40px; opacity:0; transform:translateY(60px); transition:all 1s cubic-bezier(0.23, 1, 0.32, 1); }
section.step:nth-child(even) { flex-direction: row-reverse; }
section.step.visible { opacity:1; transform:translateY(0); }

section.step img { width:35%; border-radius:var(--radius); border:2px solid var(--border); filter: grayscale(100%) brightness(0.8); box-shadow:0 0 20px rgba(255,255,255,0.1); transition: transform 1s ease, opacity 1s ease; will-change: transform, opacity; opacity:0.9; }
section.step.visible img { opacity:1; }
section.step.visible img:hover { transform: scale(1.05); opacity:1; filter: grayscale(0) brightness(1); box-shadow:0 0 24px rgba(255,255,255,0.4); }

.text { width:50%; transition: transform 0.8s ease, opacity 0.8s ease; }
.text h2 { font-size:28px; font-weight:700; margin-bottom:10px; color:var(--fg); text-shadow:0 0 10px rgba(255,255,255,0.3); transition:text-shadow 0.3s ease; }
.text h2:hover { text-shadow:0 0 20px rgba(255,255,255,0.9); }
.text p { color:var(--muted); font-size:16px; }
.num { font-size:14px; letter-spacing:.1em; text-transform:uppercase; color:var(--muted); margin-bottom:6px; }

footer { text-align:center; border-top:2px solid rgba(255,255,255,0.2); padding:40px 20px; color:var(--muted); font-size:14px; opacity:0; transform:translateY(40px); transition:all 1s ease; text-shadow:0 0 8px rgba(255,255,255,0.1); background:rgba(255,255,255,0.05); backdrop-filter:blur(8px); }
footer.visible { opacity:1; transform:translateY(0); }

@media(max-width:800px){
    section.step, section.step:nth-child(even){
        flex-direction: column-reverse;
    }
    section.step img, .text{
        width:100%;
    }

    section.step .text {
        margin-top: 32px; 
        margin-bottom: 32px;
    }
}

.cta-btn {
    display: inline-block;
    margin-top: 24px;
    font-size: 18px;
    font-weight: 600;
    color: #000;
    background: #fff;
    padding: 14px 32px;
    border-radius: 12px;
    text-decoration: none;
    box-shadow: 0 0 20px rgba(255,255,255,0.2);
    transition: all 0.3s ease;
}
.cta-btn:hover {
    background: #000;
    color: #fff;
    box-shadow: 0 0 24px rgba(255,255,255,0.6);
    transform: translateY(-2px);
}