:root {
    --snow-bg: #f8f9fa;
    --snow-text: #334155;
    --snow-primary: #3b82f6;
    --snow-secondary: #0ea5e9;
    --snow-card: #ffffff;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background-color: var(--snow-bg); color: var(--snow-text);
    font-family: 'Nunito', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.7; overflow-x: hidden;
}

/* Snowfall Effect */
.snow-container {
    position: relative; max-width: 1200px; margin: 0 auto; padding: 0 20px; z-index: 10;
}
.snow-bg {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: 1; pointer-events: none;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255,255,255,0.8) 0%, transparent 10%),
        radial-gradient(circle at 80% 70%, rgba(255,255,255,0.8) 0%, transparent 10%),
        radial-gradient(circle at 50% 50%, rgba(255,255,255,0.6) 0%, transparent 20%);
    background-size: 100px 100px;
    animation: snowFall 20s linear infinite;
}
@keyframes snowFall { 0% { background-position: 0 0, 0 0, 0 0; } 100% { background-position: 100px 1000px, -100px 800px, 50px 1200px; } }

/* Header */
.snow-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 25px 40px; margin-top: 30px; margin-bottom: 60px;
    background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(10px);
    border-radius: 20px; box-shadow: 0 10px 30px rgba(148, 163, 184, 0.1);
}
.snow-brand {
    font-size: 24px; font-weight: 800; color: var(--snow-primary);
    display: flex; align-items: center; gap: 10px;
}
.snow-brand::before {
    content: '❄'; color: var(--snow-secondary); font-size: 20px;
}
.snow-nav { display: flex; gap: 30px; }
.snow-nav a {
    font-size: 15px; font-weight: 600; color: #64748b; transition: all 0.3s;
    padding: 8px 16px; border-radius: 12px;
}
.snow-nav a:hover, .snow-nav a.active {
    color: var(--snow-primary); background: #f1f5f9;
}

/* Hero */
.snow-hero {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 100px; padding: 40px; background: var(--snow-card);
    border-radius: 30px; box-shadow: 0 20px 50px rgba(148, 163, 184, 0.1);
}
.sh-content { flex: 1; padding-right: 50px;}
.sh-content h1 {
    font-size: 48px; font-weight: 800; margin-bottom: 20px; color: #0f172a;
    line-height: 1.2;
}
.sh-content p {
    font-size: 18px; color: #64748b; margin-bottom: 40px;
}
.sh-visual {
    flex: 1; display: flex; justify-content: center; align-items: center;
}
.snow-globe {
    width: 300px; height: 300px; border-radius: 50%;
    background: linear-gradient(135deg, #e0f2fe, #bae6fd);
    box-shadow: inset -20px -20px 40px rgba(255,255,255,0.5), 0 20px 40px rgba(14, 165, 233, 0.2);
    position: relative; overflow: hidden;
}
.snow-globe::after {
    content: ''; position: absolute; top: 10%; left: 10%; width: 30%; height: 30%;
    background: rgba(255,255,255,0.8); border-radius: 50%; filter: blur(10px);
}

.btn-snow {
    display: inline-block; padding: 16px 35px; font-size: 16px; font-weight: 700;
    color: #fff; background: var(--snow-primary); border-radius: 16px;
    transition: all 0.3s; margin-right: 15px; box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
}
.btn-snow:hover { transform: translateY(-3px); box-shadow: 0 15px 25px rgba(59, 130, 246, 0.4); }
.btn-snow-alt {
    display: inline-block; padding: 16px 35px; font-size: 16px; font-weight: 700;
    color: var(--snow-primary); background: #f1f5f9; border-radius: 16px;
    transition: all 0.3s;
}
.btn-snow-alt:hover { background: #e2e8f0; }

/* Features */
.snow-features { margin-bottom: 100px;}
.sf-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px;}
.sf-card {
    background: var(--snow-card); padding: 40px 30px; border-radius: 24px;
    box-shadow: 0 15px 35px rgba(148, 163, 184, 0.05); transition: all 0.3s;
    text-align: center; border: 1px solid #f1f5f9;
}
.sf-card:hover {
    transform: translateY(-10px); box-shadow: 0 25px 50px rgba(148, 163, 184, 0.1);
    border-color: #e2e8f0;
}
.sf-icon {
    font-size: 40px; margin-bottom: 20px; color: var(--snow-secondary);
}
.sf-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 15px; color: #1e293b;}
.sf-card p { font-size: 15px; color: #64748b;}

/* Nodes */
.snow-nodes {
    margin-bottom: 100px; background: var(--snow-primary); padding: 60px 40px;
    border-radius: 30px; color: #fff; text-align: center;
}
.snow-nodes h2 { font-size: 32px; font-weight: 800; margin-bottom: 40px;}
.sn-list { display: flex; flex-wrap: wrap; gap: 15px; justify-content: center;}
.sn-item {
    padding: 12px 25px; background: rgba(255,255,255,0.1); border-radius: 12px;
    font-size: 15px; font-weight: 600; backdrop-filter: blur(5px);
}

/* FAQ */
.snow-faq { margin-bottom: 100px; max-width: 800px; margin-left: auto; margin-right: auto;}
.snow-faq h2 { font-size: 32px; font-weight: 800; margin-bottom: 40px; color: #0f172a; text-align: center;}
.s-faq-item {
    margin-bottom: 20px; background: var(--snow-card); border-radius: 16px;
    padding: 30px; box-shadow: 0 10px 25px rgba(148, 163, 184, 0.05);
}
.s-fq { font-size: 18px; font-weight: 700; color: var(--snow-primary); margin-bottom: 12px;}
.s-fa { font-size: 15px; color: #64748b;}

footer { text-align: center; padding: 40px 0; color: #94a3b8; font-size: 14px;}

@media (max-width: 900px) {
    .snow-header { flex-direction: column; gap: 20px; padding: 20px; }
    .snow-hero { flex-direction: column; text-align: center; padding: 30px;}
    .sh-content { padding-right: 0; margin-bottom: 40px;}
    .sf-grid { grid-template-columns: 1fr; }
    .btn-snow, .btn-snow-alt { display: block; margin: 10px auto; width: 80%;}
}